CN100352971C - Cover for exothermic article excellent in heat absorbing property and surface treated metal sheet therefor, and applications thereof - Google Patents

Abstract

A cover for an exothermic article excellent in heat absorbing property made from a metal/a non-metal, which comprises a cover base material and, formed at least on the inner surface thereof, a heat absorbing coating layer exhibiting a total thermal emissivity in the region of the wave length of 600 to 3000 cm<-1> of 0.70 or more as measured at a temperature of 80 to 200 DEG C; a surface treated metal sheet excellent in heat absorbing property and electroconductivity which comprises a metal sheet/a plated metal sheet, formed at least one surface thereof, the above heat absorbing coating layer comprising (a) 100 mass % of solids in a binder, (b) 10 to 150 mass % of a heat absorbing pigment and optionally (c) 1 to 150 mass % of an electroconductive pigment; a refrigerator excellent in heat efficiency having an inside surface of its outer metal sheet coated with the above heat absorbing film; an portable or on-vehicle device with exothermic electronic parts which has a case and, formed on the inside thereof, a heat absorbing coating layer comprising 100 parts by mass of solids in a binder, 1 to 20 parts by mass of a carbon having a particle diameter of less than 0.1 mum and 1 to 140 mass % of a carbon having a particle diameter of 0.1 to 50 mum, with the proviso that the sum of the amounts of the two types of carbon is 10 to 150 parts.

Description

Have excellent heat absorptivity the heating element coverture, be used for this surface treated metal sheet with and use

Technical field

The present invention relates to a kind of product with excellent heat absorptivity, and especially, the present invention relates to the metal of a kind of portion within it encapsulation Heating element (as engine, electronic component, well heater and battery) or nonmetal coverture and as the surface treated metal sheet of obducent material.The invention still further relates to a kind of refrigerator that for this reason uses above-mentioned plate of material with excellent heat absorptivity and handheld device (mobile equipment), mobile unit and and housing, it is coated with the rising that a kind of height heat absorptivity coating suppresses temperature by the inboard at housing.Handheld device and mobile unit comprise portable phone, notebook computer, PDA, on-vehicle battery shell, Vehicular navigation system, vehicle audio equipment and onboard control device.

Background technology

By convention, with metal sheet,, be used for the outside sheet material of household electrical appliance or be used for the cover stock material of internals as steel plate and aluminium sheet.These metal sheets need have the performance such as erosion resistance and designability, thereby carry out surface treatment usually before using.The example of this metal sheet is included in the excellent electroplating steel plate in erosion resistance aspect, have the electroplating steel plate of chromate coating and applying coating and thereby be endowed the metal sheet of the precoating of designability in advance.

The needed additional properties of these metal sheets are anti-finger printing, ground connection property, anti-processing and scratch property or the like.In order to satisfy these needs, various surface-treated steel plates have been developed.

For example, Japan has examined patent disclosure (Kokoku) 4-14191 and discloses a kind of technology that improves erosion resistance and anti-finger printing, wherein form organic composite bed of being made up of organic resin on the electroplating steel plate that adopts the chromic salt coating, described organic resin solution is to regulate by the colloidal sol that adding has a specified particle size.And Japanese unexamined patent publication No. open (Kokai) 5-65666 discloses a kind of coating that comprises wax and lubricant that applies on steel plate, thereby improves the technology of processing and scratch property; And Kokai 10-16128 discloses the metallic surface of a kind of employing controlled coating coating chromate treating aspect surfaceness and bed thickness, thereby gives the technology of anti-finger printing and ground connection property.

In addition, also non-metallic material such as plastics can be used for the outside sheet material of household electrical appliance or be used for the coverture of internals.

Along with popularizing and the computerize of household electrical appliance of computer, used a large amount of elements in the inside of computer or household electrical appliance, as electric motor and electronic component as power supply.The thermal value of this thermal source also is ever-increasing.Therefore, require the outside sheet material of product or the coverture of internals to have the performance that is suppressed at inner heat that produces or efficient release of heat.The heating element coverture that is used for household electrical appliance further requires to have electroconductibility to obtain ground connection property.

For the rising of the electronic equipment internal temperature that suppresses to comprise electronic component, used so far radiator element is provided in electronics, thermovent be provided on the electronic equipment casing or in electronics, adopting fan to force to carry out the refrigerative technology.

Electronics is fragile for heat, when temperature raises, will cause fault or performance to reduce.Therefore, heat radiation or cooling are important.In recent years, require and used higher integrated and more accurate wiring, the measure that the performance that opposing causes owing to temperature raises reduces (as the working speed of fault and reduction) becomes more important.Especially, with regard to handheld device (mobile equipment), miniaturized electronics or outdoor mobile unit that uses and be exposed to the heat that engine produces or the like, suppress because the heat that the heating certainly of inner member and heat-generating electronic elements or battery produce is gathered in equipment and the temperature of electronics or battery is raise is very important.

So far, being mainly used in from the technology of casting of electronic device heat radiation is to form the housing that opening is formed by heat-transfer matcrial with rejected heat or formation.In addition, proposed to apply coating, thereby improved heat radiation with good thermal diffusivity to the outside of housing.

With regard to the routine techniques close with the present invention, the internal surface that Japanese Unexamined Patent Application open (Kokai) 11-340639 discloses a kind of shell to electronics (TV receptor or other portable information device wherein are housed) applies the method for the coating that contains infrared absorbing agents.

Equally, for making electronics cooling or heat radiation, proposed or used the whole bag of tricks.But, consider that outward appearance, weight reduce or the like, the structured material that is used for the shell of portable or mobile unit often is restricted.In addition, in order to realize the performance of miniaturization and Geng Gao, require more effective cooling or heat radiation.

According to these requirements, first purpose of the present invention is a kind of technology of giving metal or nonmetal heating unit coverture or the excellent heat absorptivity of surface treated metal sheet of exploitation, and a kind of metal or nonmetal heating unit coverture and surface treated metal sheet that advantageously has excellent heat absorptivity is provided.

Relevant with first purpose, second purpose of the present invention is a kind of technology of giving the excellent heat absorptivity of outside plate of exploitation, and provide a kind of refrigerator with excellent heat efficient and a kind of make effectively have excellent heat absorptivity the manufacture method of refrigerator.

The 3rd purpose of the present invention provides a kind of housing that improves more aspect heat dispersion, described housing is used to comprise the portable or mobile unit of heat-generating electronic elements; And provide a kind of portable or mobile unit with above-mentioned housing.

Summary of the invention

Because extensive studies, the inventor finds, when the material paint that will have high heat absorptivity is used on the metal system of thermal source of household electrical appliance or the obducent internal surface of nonmetal system, to compare with the housing that does not apply material with high heat absorptivity, the temperature within the thermal source coverture is lower.

Based on this discovery, finished the present invention, and main points of the present invention are summed up as follows:

1. heating element coverture with excellent heat absorptivity comprises the heating element coverture main body that has the heat-sink shell of coating on the surface at least within it, described heat-sink shell under 80 ℃ to 200 ℃ temperature, surveyed 600 to 3,000cm ^-1The wave number district in the total radiation coefficient be 0.70 or more.

2. the heating element coverture with excellent heat absorptivity described in project 1, wherein heat-sink shell comprises 100 mass parts adhesive solids compositions and 10 to 150 mass parts heat absorptivity pigment.

3. the heating element coverture with excellent heat absorptivity described in project 2, wherein heat-sink shell further comprises 1 to 150 mass parts conducting pigment.

4. the heating element coverture described in project 1 with excellent heat absorptivity, wherein, with respect to per 100 mass parts adhesive solids compositions, it is the carbon of 0.1 to 50 μ m less than carbon and 1 to the 140 mass parts granularity of 0.1 μ m that heat-sink shell comprises 1 to 20 mass parts granularity, and in heat-sink shell, granularity is 10 to 150 mass parts less than the summation of the carbon that carbon and the granularity of 0.1 μ m is 0.1 to 50 μ m.

5. the heating element coverture described in project 3 with excellent heat absorptivity, wherein heat absorptivity pigment is that mean particle size is 1 to 100nm carbon black, conducting pigment comprises that mean particle size is laminar metal Ni and the chain metal Ni of 0.5 to 50 μ m, and the mass ratio of laminar metal Ni/ chain Ni is 0.1 to 6.

6. the heating element coverture with excellent heat absorptivity described in project 3, wherein conducting pigment is a ferro-silicon.

7. the heating element coverture with excellent heat absorptivity described in project 1, wherein heat-sink shell comprises 100 mass parts adhesive solids compositions and 5 to 150 mass parts ferro-silicons.

8. the heating element coverture with excellent heat absorptivity described in any of project 1-7, wherein heating element coverture main body is by the metal manufacturing.

9. the heating element coverture with excellent heat absorptivity described in any of project 1-7, wherein heating element coverture main body is by nonmetal manufacturing.

10. surface treated metal sheet with excellent heat absorptivity comprises the metal sheet or the plated metal plate of the heat-sink shell that has coating at least on one surface, described heat-sink shell under 80 ℃ to 200 ℃ temperature, surveyed 600 to 3,000cm ^-1The wave number district in the total radiation coefficient be 0.70 or more.

11. the surface treated metal sheet with excellent heat absorptivity described in project 10, wherein heat-sink shell comprises 100 mass parts adhesive solids compositions and 10 to 150 mass parts heat absorptivity pigment.

12. the surface treated metal sheet with excellent heat absorptivity described in project 11, wherein heat-sink shell further comprises 1 to 150 mass parts conducting pigment.

13. the surface treated metal sheet described in project 10 with excellent heat absorptivity, wherein, with respect to per 100 mass parts adhesive solids compositions, it is the carbon of 0.1 to 50 μ m less than carbon and 1 to the 140 mass parts granularity of 0.1 μ m that heat-sink shell comprises 1 to 20 mass parts granularity, and in heat-sink shell, granularity is 10 to 150 mass parts less than the summation of the carbon that carbon and the granularity of 0.1 μ m is 0.1 to 50 μ m.

14. the surface treated metal sheet described in project 13 with excellent heat absorptivity, wherein heat absorptivity pigment is that mean particle size is 1 to 100nm carbon black, conducting pigment comprises that mean particle size is laminar metal Ni and the chain metal Ni of 0.5 to 50 μ m, and the mass ratio of laminar metal Ni/ chain Ni is 0.1 to 6.

15. the surface treated metal sheet with excellent heat absorptivity described in project 12, wherein conducting pigment is a ferro-silicon.

16. the surface treated metal sheet with excellent heat absorptivity described in project 10, wherein heat-sink shell comprises 100 mass parts adhesive solids compositions and 5 to 150 mass parts ferro-silicons.

17. the refrigerator with excellent heat efficient is included in the outside plate that has the heat-sink shell of coating on its internal surface, described heat-sink shell under 80 ℃ to 200 ℃ temperature, surveyed 600 to 3, the total radiation coefficient is 0.70 or more in the wave number district of 000cm-1.

18. the refrigerator with excellent heat efficient described in project 17, wherein, with respect to per 100 mass parts adhesive solids compositions, heat-sink shell comprises 10 to 150 mass parts carbon.

19. as project 17 described refrigerators with excellent heat efficient, wherein, with respect to per 100 mass parts adhesive solids compositions, heat-sink shell comprises 1 to 50 mass parts conductive metal powder.

20. the refrigerator described in project 17 with excellent heat efficient, wherein, with respect to per 100 mass parts adhesive solids compositions, it is the carbon of 0.1 to 50 μ m less than carbon and 1 to the 140 mass parts granularity of 0.1 μ m that heat-sink shell comprises 1 to 20 mass parts granularity, and in heat-sink shell, granularity is 10 to 150 mass parts less than the summation of the carbon that carbon and the granularity of 0.1 μ m is 0.1 to 50 μ m, and dried bed thickness is 1 μ m or more.

21. the refrigerator with excellent heat efficient is characterized in that using any one heating element coverture according to project 1-7 as outside plate.

22. the refrigerator with excellent heat efficient is characterized in that using any one surface treated metal sheet according to project 10-16 as outside plate, wherein the heat-sink shell with described metal sheet is placed as internal surface.

23. the refrigerator with excellent heat efficient described in any of project 17-20 wherein is coated on transparent layer or the layer that comprises colored pigment on the outside of metal system outside plate.

24. a manufacturing has the method for the refrigerator of excellent heat absorptivity, comprise in advance the heat-sink shell described in any of on a surface of flat metal sheet coating project 17-20 and have the metal sheet of the precoating of high heat absorptivity in another surface coated coating transparent or that contain coloured pigment with preparation, with metal sheet cutting and processing, then metal sheet is assembled into refrigerator.

25. a portable or mobile unit comprises heat-generating electronic elements and it is encapsulated in its inside and has in the housing of heat-sink shell, described heat-sink shell comprises

(A) 100 mass parts adhesive solids compositions, 1 to 20 mass parts granularity are the carbon of 0.1 to 50 μ m less than carbon and 1 to the 140 mass parts granularity of 0.1 μ m, and the summation of the granularity carbon that is 0.1 to 50 μ m less than carbon and the granularity of 0.1 μ m is 10 to 150 mass parts;

(B) 100 mass parts adhesive solids compositions, 10 to 150 mass parts heat absorptivity pigment and 1 to 150 mass parts conducting pigment, wherein heat absorptivity pigment is that mean particle size is 1 to 100nm carbon black, conducting pigment comprises that mean particle size is laminar metal Ni and the chain metal Ni of 0.5 to 50 μ m, and the mass ratio of laminar metal Ni/ chain Ni is 0.1 to 6;

(C) 100 mass parts adhesive solids compositions, 10 to 150 mass parts heat absorptivity pigment and 5 to 150 mass parts ferro-silicons; Or

(D) 100 mass parts adhesive solids compositions and 5 to 150 mass parts ferro-silicons.

26. a portable or mobile unit, the housing of portable or mobile unit that it is characterized in that being used to comprising the electronic component of heating are any one the heating element covertures according to project 1-7.

27. a portable or mobile unit, the housing of portable or mobile unit that it is characterized in that being used to comprising the electronic component of heating are to make according to the surface treated metal sheet described in any of project 10-16 by processing.

28. according to the portable or mobile unit described in the project 25, its middle shell is made by Mg alloy or Al alloy.

29. one kind has the portable of heat-sink shell or a mobile unit housing described in project 25.

Brief description of drawings

Fig. 1 has the metal system heating element coverture of excellent heat absorptivity or the structure iron of housing for expression is of the present invention.

Fig. 2 is used to measure the view of scheme of method of the testing case of heat absorptivity for expression.

Realize the method for invention

(metal or nonmetal heating unit coverture and surface treated metal sheet)

Among the present invention, heating element is not particularly limited, and comprises all Heating elements, as engine, electronic component, well heater and battery.The heating element coverture is used to cover, encapsulate or hold the purpose of this heating element.

Below mainly heat absorptivity heating element coverture of the present invention is described by reference metal sheet system heating element coverture.But the present invention is not limited to this and is applied to nonmetal system heating element coverture equally.

Known heat is an electromagnetic part of overflowing from object, and when the radiant heat ray entered in the object, a part reflected, transmission takes place in a part, rest parts be absorbed (referring to, for example, Nishikawa and Fujita, " Kikai Kogaku Kiso Koza; Dennetsu Kogaku (the elementary course of mechanical engineering, electric heating engineering) ", Rikogaku Sha, p289, (1983)).

When the radiant heat ray enters metal sheet, surface treated metal sheet or non-metallic material, thermal radiation ray generation transmission is seldom arranged, so the thermal radiation ray takes place to reflect or be absorbed.

Herein, hot if many radiant heat rays that enters reflect in coverture when the radiant heat ray that produces from heating element enters the obducent internal surface of heating element in heating element coverture inner accumulated, and the temperature in the coverture is raise.

Therefore, in order to be reduced in the temperature in the thermal source coverture, must suppress the reflection of radiant heat ray in coverture.The inventor has carried out extensive studies, and the result has found can suppress the reflection of radiant heat ray when adopting the obducent inside of layer coating with high heat absorptivity.

Enter into the method for specific absorption of radiant heat ray on the surface of metal sheet, non-metallic material or the like about check, it is known using the method for reflection of infrared spectrophotometer.But, having under the situation of uneven surface at metal sheet or non-metallic material, the radiant heat ray that enters carries out irregular reflection, and can not obtain specific absorption accurately by this method when measuring.

According to relevant thermal-radiating Kirchhoff's law, the specific absorption of object is identical (participation under fixed temperature with radiation coefficient, for example, Nishikawa and Fujita, " Kikai Kogaku Kiso Koza, Dennetsu Kogaku (the elementary course of mechanical engineering; electric heating engineering) ", p290, (1983), Rikogaku Sha).

Based on this knowledge, the inventor has carried out broad research, and the result finds, when by adopt in advance surveyed under certain temperature at 80 ℃ to 200 ℃ 600 to 3,000cm ^-1Thereby the wave number district in the total radiation coefficient be 0.70 or at least one surface of more heat-sink shell coating metal plate or plated metal plate obtain surface treated metal sheet in case under the situation that is surface mounted in the obducent inboard of heating element that will adopt the heat-sink shell coating preparation coverture and when adopting coverture covering heating element, compare with the coverture covering heating element that the metal sheet that adopts internal surface not adopt heat-sink shell to be coated with prepares, the temperature in the coverture is lower.Similarly, also found when adopt nonmetal system coverture cover heating element, wherein obducent internal surface adopt under certain temperature of 80 ℃ to 200 ℃, surveyed 600 to 3,000cm ^-1The wave number district in the total radiation coefficient be 0.70 or more heat-sink shell when applying, and adopt that coverture covers heating element, wherein the obducent internal surface situation that do not adopt heat-sink shell to be coated with is compared, the temperature in the coverture is lower.

Be lower than 600cm ^-1Or surpass 3,000cm ^-1The wave number district of frequency in the absorption of radiation ray have very little influence for the temperature that reduces in the coverture, therefore, the radiation coefficient that comprises the radiation ray with these wave number districts is unfavorable.In addition, if be coated on 600 to 3,000cm ^-1The wave number district in the total radiation coefficient less than 0.70 heat-sink shell, reduce Temperature Influence in the coverture little and this be unfavorable.

Fig. 1 represents metal or the nonmetal heating unit coverture with excellent heat absorptivity of the present invention.Metal of the present invention or nonmetal heating unit are obducent to be characterised in that, coverture is made up of metal sheet or non-metallic material 1, and obducent internal surface adopts heat-sink shell 2 to be coated with.In the drawings, 3 is heating element.When being coated with heat-sink shell 2 in advance at flat metal or non-metal board when processing with preparation metal or nonmetal heating unit coverture to metal or non-metal board again, improved the working (machining) efficiency during the preparation, be preferred therefore.

If adopt the metal sheet of heat-sink shell coating or the surface of non-metallic material not to constitute the obducent internal surface of heating element, can not obtain to reduce the effect of the temperature in the heating element coverture.Not only heat-sink shell can be coated on the obducent internal surface of heating element, and can be coated on its outside by liquid.When also being coated with in the outside and since thermal radiation equal thermal absorption influence, the temperature of metal or nonmetal heating unit coverture itself is lower, so be preferred like this.

Constitute metal with excellent heat absorptivity of the present invention or the obducent metal sheet of nonmetal heating unit or non-metallic material by adopting at least one surface of heat-sink shell coating metal plate, plated metal plate or non-metallic material, successfully guaranteed heat absorptivity.Described heat-sink shell is by a) 100 mass parts adhesive solids composition and b) 10 to 150 mass parts heat absorptivity pigment form, and under certain temperature of 80 ℃ to 200 ℃, surveyed 600 to 3,000cm ^-1The wave number district in the total radiation coefficient be 0.70 or more.

Heat absorptivity pigment can be conventional known pigment, as carbon, charcoal and graphite; Perhaps can be commercially available pigment.In these heat absorptivity pigment, preferred carbon black is because its granularity is very little and this pigment disperses in layer fully.More preferably granularity is 1 to 100nm carbon black.

The inventor further finds, for the total radiation coefficient that improves the layer that is coated with on metal sheet or non-metallic material and improve thermal absorptivity thus, adds carbon and shelter metal sheet or non-metallic material are effective with this material in layer.Herein, carbon can be common known carbon, as carbon black, charcoal and graphite.In order to shelter metal sheet or non-metallic material with carbon, must add a large amount of carbon than small grain size.If add the carbon of a small amount of small grain size, masking effect is little; And under the situation of the carbon of volume particle size, if add a large amount of carbon, between carbon granules and carbon granules, produce the gap and reduce masking effect.But, if add the carbon of a large amount of small grain size, the viscosity of the coating solution that contains adhesive solids composition and carbon is raise, and this will cause such as, for example workability reduces or the carbon granule that is dispersed in the coating solution is assembled so that produce the problem of the gelation of coating solution when coating.For addressing these problems, the inventor has carried out extensive studies, and the result has found by using the combination less than the carbon of the volume particle size of the carbon of the small grain size of 0.1 μ m and 0.1 to 50 μ m to address the above problem.When these carbon are used in combination, small-particle carbon is scattered in the gap between the carbon of dispersive volume particle size in coating, even therefore and do not add a large amount of small-particle carbon, also improved and adopted carbon that metal sheet or non-metallic material are sheltered and brought into play endothermic effect.

In the embodiment preferred of finishing based on this discovery of the present invention, heat-sink shell comprises carbon/100 mass parts adhesive solids compositions that 1 to 20 mass parts granularity is 0.1 to 50 μ m less than carbon and 1 to the 140 mass parts granularity of 0.1 μ m, and in heat-sink shell, granularity is 10 to 150 mass parts less than the summation that small-particle carbon and the granularity of 0.1 μ m is the macrobead carbon of 0.1 to 50 μ m; And bed thickness is 1 μ m or more.The lower limit of the granularity of small-particle carbon does not limit especially, still, if granularity is 0.1 μ m or more, be easy to produce the gap between carbon granules and carbon granules, and this carbon fails to play the effect of small-particle carbon unfriendly.If add small-particle carbon amount be less than 1 mass parts, the effect of sheltering metal sheet or non-metallic material is poor, makes to produce weak heat absorptivity; And this is unsuitable.Otherwise if added consumption surpasses 20 mass parts, coating solution viscosity raises, and make it gelation behind certain hour, and this is unsuitable.If the granularity of macrobead carbon is less than 0.1 μ m, carbon can not play the effect of macrobead carbon and demonstrate the performance identical with small-particle carbon.Therefore, this is unsuitable.Otherwise if the granularity of macrobead carbon surpasses 50 μ m, coating may have poor outward appearance after coating performance during the carbonaceous coating solution of coating bag may reduce or be coated with, so this is unsuitable.The preferred size of macrobead carbon be 0.1 μ m to 30 μ m, more preferably 0.1 μ m is to 10 μ m.If the consumption of the macrobead carbon that is added is less than 1 mass parts, heat absorptivity reduces; Otherwise if this consumption surpasses 140 mass parts, coating becomes fragile and poor in processability, and this is unsuitable.If total consumption of small-particle carbon and macrobead carbon is less than 10 mass parts, heat absorptivity reduces; Otherwise if this total consumption surpasses 150 mass parts, coating becomes fragile and poor in processability or coating solution viscosity raise and show the processing characteristics of difference during being coated with, so this is unsuitable.If the bed thickness of heat-sink shell is less than 1 μ m, coating is variation aspect heat absorptivity, so this is unsuitable.

In a preferred embodiment, constitute metal with excellent heat absorptivity of the present invention or the obducent metal sheet of nonmetal heating unit or non-metallic material by adopting at least one surface of heat-sink shell coating metal plate, plated metal plate or non-metallic material, successfully guaranteed heat absorptivity and electroconductibility.Described heat-sink shell comprises a) 100 mass parts adhesive solids compositions, b) 10 to 150 mass parts heat absorptivity pigment and c) 1 to 150 mass parts conducting pigment, and under certain temperature of 80 ℃ to 200 ℃, surveyed 600 to 3,000cm ^-1The wave number district in the total radiation coefficient be 0.70 or more.

Conducting pigment can be known pigment, as laminar metal Ni, chain metal Ni, granulated metal Al, squamous metal A l and powder of stainless steel; Maybe can be commercially available pigment.Usually, metal is easy to reverberation to suppress the thermal absorption of heat absorptivity pigment.But, comparing with other metallic pigment, metal Ni has the performance of the thermal absorption of less inhibition heat absorptivity pigment.Especially, preferred chain metal Ni is because because chain state and the regional little of layer internal reflection heat and less suppressed thermal absorption.

But, only use chain metal Ni to produce the electroconductibility of difference, therefore preferably laminar metal Ni and chain metal Ni are used in combination.In this case, because can obtain excellent heat absorptivity and superior electrical conductivity, the mass ratio of preferred laminar metal Ni/ chain metal Ni is 0.1 to 6.

The zone of the heat of laminar metal Ni reflection is big and be easy to suppress thermal absorption in layer.Therefore, if the mass ratio of laminar metal Ni/ chain metal Ni less than 0.1, electroconductibility reduces; Otherwise if this mass ratio surpasses 6, heat absorptivity reduces.

Preferred conducting pigment is a ferro-silicon, because improved the radiation coefficient of heat-sink shell; And under the situation of surface treated metal sheet, improved erosion resistance simultaneously.Ferro-silicon is excellent electric conductivity not only, and the heat absorptivity excellence; And can be used as conducting pigment and heat absorptivity pigment simultaneously, even so that adding separately also can be guaranteed heat absorptivity and electroconductibility simultaneously.

If the consumption of the heat absorptivity pigment that is added is less than 10 mass parts/100 weight part adhesive solids compositions, under certain temperature of 80 ℃ to 200 ℃, surveyed 600 to 3,000cm ^-1The wave number district in the total radiation coefficient of metal sheet be less than 0.70, and this is unsuitable.

When per 100 mass parts resin solid became the large usage quantity of the heat absorptivity pigment that branch adds, it is higher that radiation coefficient becomes, and this is more preferred.But if this consumption surpasses 150 mass parts, coating becomes fragile and shock-resistance step-down or workability reduction when the processing metal plate, and this is unsuitable.

The bed thickness of heat-sink shell is selected arbitrarily as required, but under the situation of metal sheet, suitably is 1 to 50 μ m, and under the situation of non-metallic material, is 1 to 1000 μ m.If described bed thickness less than 1 μ m, under certain temperature of 80 ℃ to 200 ℃, surveyed 600 to 3,000cm ^-1The wave number district in the total radiation coefficient of metal sheet or non-metallic material be difficult to reach 0.70.If under the situation of metal sheet, bed thickness surpasses 50 μ m, and the workability of coating reduces unfriendly.If under the situation of non-metallic material, bed thickness surpasses 1000 μ m, and thermal absorption reaches capacity and is disadvantageous economically.When considering electroconductibility, more preferably bed thickness is that 1 μ m is to being less than 10 μ m.

The tackiness agent that constitutes heat-sink shell of the present invention can be to be generally used for the coating known tackiness agent of (as the inorganic coating that forms by resin or sol-gel method and the inorganic/organic composite coating that is formed by sol-gel method).Resin suitably uses with forms such as coating, because handle easy and the formation of promotion coating.

Resin can be common known resin, as vibrin, urethane resin, acrylic resin, Resins, epoxy, melamine resin and vinyl chloride resin.Resin can be thermoplastic or heat cured.

If necessary, multiple these resins can be used in combination.This resin is not particularly limited, but must suitably select as required, because the performance of coating (as workability, tackiness and hardness) changes according to kind, molecular weight and the glass transition temperature Tg of resin.

The curing that the use linking agent of resin carries out is not particularly limited, but must suitably select as required because the performance of coating (as workability, tackiness and hardness) according to the kind of linking agent and add-on and in crosslinking reaction the kind and the add-on of catalyzer change.

When employed resin is solid, can be heated fusion, in organic solvent, dissolves or grind into powder.Can also use the water soluble resin or the emulsion resin that obtain by water dispersion.In addition, resin can be can the ultraviolet ray (UV) but solidified resin or electron beam (EB) solidified resin.

According to the inventor's knowledge, for example the melamine solidifiable polyester resin of preferred solvent type, solvent-borne type isocyanic ester solidifiable polyester resin and water-dispersed acrylic emulsion resin.Especially, below be preferred.But these only are examples, and the present invention is not limited to this.

Under the situation of solvent-borne type melamine solidifiable polyester resin, the molecular weight that preferred polyester resin has is 2, and 000-30,000 (with regard to number-average molecular weight) and Tg are-10 to 70 ℃.The amount of the melamine resin that is added is preferably 5-70 mass parts/100 mass parts vibrin.

If the molecular weight of vibrin is less than 2,000, the processibility of coating reduces; Otherwise,, when resin dissolves is in solvent, cause very high viscosity unfriendly if this molecular weight surpasses 30,000.If the Tg of vibrin is lower than-10 ℃, do not form coating and this is unsuitable; Otherwise, if Tg surpasses 70 ℃, the too hard and poor in processability of coating, so this is unsuitable.If the consumption of the melamine resin that is added is less than 5 mass parts/100 mass parts vibrin, coating is uncured, and this is unsuitable; Otherwise, if this consumption surpasses 70 mass parts, the too hard and poor in processability of coating, so this is unsuitable.

Used vibrin can be commercially available product usually, as by Toyobo Co., and " VILON " that Ltd. produces and by Sumitomo Bayer Urethane Co., " DESMOFEN " that Ltd. produces.Used melamine resin usually also can commercially available product, as " CYMEL " and " MYCOAT " that produced by MitsuiCytec Ltd. with by Dai-Nippon Ink ﹠amp; Chemicals, " PEKKAMIN " and " SUPER-PEKKAMIN " that Inc. produces.

Under the situation of solvent-borne type isocyanic ester solidifiable polyester resin, the molecular weight that preferred polyester resin has is 2, and 000-30,000 (with regard to number-average molecular weight) and Tg are-10 to 70 ℃.The amount of the isocyanic ester that is added is the amount of feasible [the NCO group equivalent of isocyanic ester]/[the OH group equivalent of vibrin]=0.8-1.2 preferably.

If the value of [the NCO group equivalent of isocyanic ester]/[the OH group equivalent of vibrin] is less than 0.8 or surpass 1.2, when forming, coating is not easy to make coating curing.If the molecular weight of vibrin is less than 2,000, the poor in processability of coating; Otherwise,, when resin dissolves is in solvent, cause too high viscosity unfriendly if this molecular weight surpasses 30,000.If the Tg of vibrin is lower than-10 ℃, do not form coating and this is unsuitable; Otherwise, if Tg surpasses 70 ℃, the too hard and poor in processability of coating, so this is unsuitable.

Used vibrin can be commercially available product usually, as by Toyobo Co., and " VILON " that Ltd. produces and by Sumitomo Bayer Urethane Co., " DESMOFEN " that Ltd. produces.

Used isocyanic ester usually also can commercially available product, as by Sumitomo Bayer Co., and " SUMIDULE " and " DESMODULE " that Ltd. produces and by " TAKENATE " of Mitsui TakedaChemical production.

The water-dispersed acrylic emulsion resin can be common known emulsion resin or commercially available product.In the water-dispersed acrylic emulsion, can add and have good adhesive resin, Resins, epoxy as is generally known.

The kind of Resins, epoxy and add-on influence the performance of coating, therefore, can suitably select it as required.Aqueous resins more preferably, as dispersed acrylic resin, because realize high workability in the coating process of coating and do not produce the problem that volatile organic solvent is discharged into the atmosphere, and the result needn't strengthen the vapor pipe in coating apparatus or the combustion unit of volatile organic solvent.

In heat-sink shell of the present invention,, colored pigment and rust-stabilising pigment or rust-preventive agent can be used in combination except heat absorptivity pigment and conducting pigment.

Colored pigment can be common known colored pigment, comprises mineral dye and pigment dyestuff, as titanium oxide (TiO ₂), zinc oxide (ZnO), zirconium white (ZrO ₂), lime carbonate (CaCO ₃), barium sulfate (BaSO ₄), aluminum oxide (Al ₂O ₃), kaolin, carbon black and ferric oxide (Fe ₂O ₃, Fe ₃O ₄).

Rust-stabilising pigment can be common known chromium base rust-stabilising pigment, as strontium yellow and yellow ultramarine; Or common known Chrome-free rust-stabilising pigment or rust-preventive agent, as zinc phosphate, zinc phosphite, aluminum phosphate, aluminum phosphite, molybdate, phosphomolybdate, vanadic acid/phosphoric acid hybrid pigment, silica be called the silica of the absorption calcium of Calucium Silicate powder.

Especially, be to be easy to preferably add rust-stabilising pigment or rust-preventive agent under the situation of corrosive metal such as steel plate and electroplating steel plate at the base metal of metal sheet of the present invention, because strengthened the erosion resistance of metal sheet of the present invention.

Consider recent environmental problem, more preferably Chrome-free rust-stabilising pigment or rust-preventive agent.Chrome-free rust-stabilising pigment or rust-preventive agent can be reagent or commercially available product.

The example of commercially available rust-stabilising pigment comprises phosphoric acid zinc-base rust-stabilising pigment " EXPERT-NP500 " and " EXPERT-NP530 " that is produced by Toho Ganryo, phosphorous acid zinc-base rust-stabilising pigment " EXPERT-NP1500 " by Toho Ganryo production, " EXPERT-NP1530 ", " EXPERT-NP1600 " and " EXPERT-NP1700 ", poly aluminium phosphate " K-WHITE series " by Teika production, molybdic acid alkali pigment and phospho-molybdic acid alkali pigment " SHER-WHITE series " by Sherwin Williams production, gas phase silica " AEROSIL series " by Nippon Aerosil and Degussa production, the silica " SHELDEX series " of colloided silica of producing by Nissan Chemical " SNOWTEX series " and the absorption calcium produced by Grace.

Colored pigment and rust-stabilising pigment or rust-preventive agent must suitably be selected as required, because the radiation coefficient of coating and workability, outward appearance, erosion resistance and other performance are very different according to their kind, add-on and granularity.

In heat-sink shell of the present invention, if necessary, can add common known levelling agent, pigment dispersing agent, wax or the like.The kind and the add-on of these additives are not particularly limited, and can suitably select as required.Especially, for example, wax improve to form aspect the formability of surface treated metal sheet of the present invention or is being effective suppressing heat-sink shell aspect cracking.

Heat-sink shell of the present invention can form common known coating and apply described coating formation by the coating component that will comprise tackiness agent on the surface of metal sheet or non-metallic material.The example of coating form comprise by the solvent based coating that in solvent, resin dissolves is obtained, by with the resin formation emulsion and with its be dispersed to the aqueous coating of the medium acquisition of water, by the resin ground powdered is obtained powder coating, by with the resin ground powdered and with its be distributed to the medium acquisition of water the slurry powder coating, can ultraviolet ray (UV) but coating material solidified electron beam (EB) is coating material solidified, pellicular cascade and with resin fusion, the form that is coated with then.

Coating process is not particularly limited, and can use common known coating process, as roller coat, roll-type curtain coating, melt flow coat cloth, aerial spraying, hydraulic spraying, brushing and die coater coating.Can also use dip-coating or ink-jet application.

Before coating heat-sink shell on the metal sheet,, preferably metal sheet is carried out pre-treatment in order to improve the clinging power of coating and metal sheet.When applying this pre-treatment, the tackiness of heat-sink shell and the erosion resistance of metal sheet have advantageously been improved.

When not applying the pre-treatment that is used to be coated with when the coating close attachment, this is preferred, because can save the coating pre-treatment step.The coating pre-treatment can be common known processing, handles as chromic salt coating processing, chromic salt electrolysis treatment, zinc phosphate processing, zirconium white processing and titanium dioxide.

In recent years, worked out chromate-free pre-treatment, and when the chromate-free pre-treatment that applies based on resin, reduced carrying capacity of environment based on organic compound (as resin); And therefore, this is preferred.

Be included in technology described in open (Kokai) 09-828291 of Japanese unexamined patent publication No., 10-251509,10-337530,2000-17466,2000-248385,2000-273659,2000-282252,2000-265282 and the 2000-167482 based on the pretreated example of chromate-free of organic compound (as resin).Can use these or other known technology.

Can also use the chromate-free pre-treatment that on market, has existed.According to pretreated kind and adhesion amount, the tackiness of heat-sink shell and the erosion resistance of metal sheet have a great difference, and therefore, pre-treatment must suitably be selected as required.

By processing metal sheet of the present invention is used to prepare metal system heating element coverture, and therefore, if machinable metallic substance, this is enough.And can use common known metallic substance.Metallic substance can also be an alloy material.The example comprises steel, aluminium, titanium, copper and magnesium alloy.Wherein, preferably has the aluminium and the copper of high thermal conductivity, because can be dispersed in the heat that absorbs in the metal and can make metal avoid local heating.The surface of these materials can be electroplated.

That galvanized example comprises is zinc-plated, aluminize, copper facing and nickel plating.Can also use alloy plating.Under the situation of steel plate, can use common known steel plate or electroplating steel plate, as cold-rolled steel sheet, hot-rolled steel sheet, hot dip process steel plate, electrogalvanizing steel plate, galvanizing layer anneal steel plate, Aludip, plate golding aluminium zinc alloy steel plate and stainless-steel sheet.

Especially, preferably adopt the steel plate of iron-zinc alloy coating, as hot-dip galvanized steel sheet, because this Coated Steel itself has high heat absorptivity; And when adopting heat-sink shell to be coated with, improved heat absorptivity more.And when adopting the heat-sink shell coating when having the steel plate of high thermal conductivity metal (as aluminium and copper) coating, this is preferred, because can and can make metal avoid local heating with the hot homodisperse that absorbs by the electrolytic coating on the metallic surface.With having the galvanized steel plate of high thermal conductivity metal (as aluminium and copper) is favourable improving aspect the thermal conductivity not only, and also is being favourable aspect the intensity of keeping steel plate and the formability; And because galvanized steel plate is expensive not as good as using the metal (as aluminium and copper) with high thermal conductivity separately, thereby can reduce manufacturing cost.

Before applying the coating pre-treatment, metal sheet can be carried out conventional processing, as hot water cleaning, alkaline degreasing and pickling.By with metal forming with preparation metal system heating element obducent process in, processing method can be common known processing method.The example comprises forging, casting, punching press, bending, stretching, bulging and rolling and forming.In advance heat-sink shell is coated on the metal sheet, the precoating system that forms metal sheet is then brought high preparation efficiency, and is preferred.

Non-metallic material used among the present invention are any inorganic or organic materials except that metallic substance, and can be plastics, resin, pottery, porcelain, cement and naturally occurring material.In addition, resin can be any known resin, comprises acrylic resin, vinyl chloride resin, HIPS base resin, ABS base resin and polycarbonate-base resin.And pottery can be any known pottery, comprises alumina base, aluminum-nitride-based resin, barium phthalate base and strontium titanate base pottery.

Under the situation of non-metallic material, if necessary, common known chemical conversion processing can be carried out in the surface that is coated with the non-metallic material of heat-sink shell thereon so that the roughness roughening, so that can improve the tackiness of heat-sink shell.

The material that reaches for this reason in the application of excellent heating element aspect its heat absorptivity of the present invention comprises audio-visual equipment, shows tuner and their utility appliance as VTR, audiofrequency apparatus, DVD, TV, LCD TV, plasma display and plasma; PC, subnotebook PC and PC peripherals are as CD and hard disk drive; Mobile equipment is as portable phone and electronic memo; Home electric production is as refrigerator, the outdoor machine of air-conditioning and indoor apparatus of air conditioner, washing machine and means of illumination; Battery case, on-vehicle battery shell, vehicle electronics part and equipment, Vehicular navigation system, vehicle audio equipment, vending machine, changer, ticket machine or prepaid card vending machine or the like.In addition, the preferred application is outer cover, internals plate or substrate, inside or external electric parts coverture and product inside or external control devices.

Describe refrigerator and the portable and mobile unit of using heating element coverture of the present invention and material for this reason below in detail, and their attested effects.

(refrigerator)

In refrigerator, use a large amount of elements as thermal source, as electric motor and electronic component.Especially, along with the computerized development of nearest refrigerator, the heat that produces from those thermals source is easy to accumulate in refrigerator inside and internal temperature is raise.When the temperature in the refrigerator raises, need relatively large electric power to be used to reduce the interior temperature of cooled region, and therefore shortened the life-span of electric motor or electronic component.In recent years, consider ecotope, increase day by day for the demand of the current consumption that reduces electronic product (as refrigerator).

Because extensive studies, the inventor finds that the metal material surface on the inboard of the material paint refrigerator outside plate that will have high-absorbable is not compared with applying the housing with high-absorbable material, has reduced near the temperature of thermal source (as electric motor).

Suppose that the outside plate that constitutes refrigerator is the heating element coverture, above-mentioned those about heating element coverture and heat-sink shell can be applied to the outside plate of refrigerator of the present invention and be coated on heat-sink shell on the internal surface of outside plate.Therefore, save their description herein.

Refrigerator of the present invention can have structure and the inside identical with known those refrigerators, except the specific heat-sink shell of internal surface coating at outside plate.

When at the outside surface coating pigmented layer of the outside plate of refrigerator of the present invention or transparent layer, can give the outward appearance that it has designed, and this is preferred.In order to improve the erosion resistance under the metal sheet situation and to improve design performance, this pigmented layer or transparent layer preferably are made up of the multiwalled coating, the rustproof layer that wherein will contain rust-stabilising pigment is used for the lowest layer, provide thereon the pigmented layer that contains coloured pigment and, if necessary, on pigmented layer, further be coated with transparent layer.

In the process of assembling refrigerator, because and the friction between travelling belt or other delivery instrument, on the upper layer of the metal sheet of the outside plate that is used for refrigerator, produce static, and this causes in fabrication line dust or micronic dust to be attached to the problem on the surface of metal sheet.In order to address this problem, must be by giving coating electroconductibility to remove the static that gathers at coatingsurface.The heat-sink shell that is coated with on the inboard of the outside plate of refrigerator of the present invention preferably comprises: except that above-mentioned carbon, 1 to 50 mass parts conductive metal powder/100 mass parts adhesive solids compositions, coating can have electroconductibility and can solve like this because the problem of electrostatic dust in assembling refrigerator process or micronic dust adhesion whereby.The formation of giving heat-sink shell electroconductibility has more than been described.

In the process of making refrigerator of the present invention, the metal sheet that has the precoating of high heat absorptivity when a surface that heat-sink shell of the present invention is applied in advance metal sheet with preparation, and with the cutting of the metal sheet of precoating, when in then on the inboard that heat-sink shell is placed outside plate it being assembled into refrigerator, improved working (machining) efficiency and this is preferred.

During making the refrigerator with high heat absorptivity of the present invention, be coated with the metal sheet of heat-sink shell in advance in preparation, used working method can be common known working method during then with its cutting, processing and assembling.The example comprises punching press, bending, stretching, bulging and rolling and forming.

(portable and mobile unit)

When on the internal surface of the housing that high heat absorptivity coating is coated on the electronic component that is used to comprise heating or battery, can significantly suppress the rising of temperature in the electronics.Based on above-mentioned discovery, finish the present invention.

In the present invention, handheld device (mobile equipment) and mobile unit are not particularly limited, and comprise portable phone, notebook computer, PDA, on-vehicle battery, Vehicular navigation system equipment, vehicle audio equipment and vehicle control apparatus.

Heat-generating electronic elements is not particularly limited, and comprises the electronic component such as CPU parts, MPU parts, DSP parts, electronic integrated circuit and resistance.Battery is known a kind of.

The material that constitutes the housing of portable or mobile unit of the present invention does not also limit especially, but housing and plastic casing that the example comprises Mg alloy housing, Al alloy housing, Steel Sheel, made by other metal.Wherein, Mg alloy housing, Al alloy housing and Steel Sheel are useful.

In one embodiment, heat-sink shell portable or the mobile unit housing comprises 100 mass parts adhesive solids compositions, 1 to 20 mass parts granularity is the carbon of 0.1 to 50 μ m less than carbon and 1 to the 140 mass parts granularity of 0.1 μ m, and in heat-sink shell, granularity is 10 to 150 mass parts less than the summation of the carbon that carbon and the granularity of 0.1 μ m is 0.1 to 50 μ m.

In second embodiment, heat-sink shell comprises the adhesive solids composition of 100 mass parts, the heat absorptivity pigment of 10 to 150 mass parts and the conducting pigment of 1 to 150 mass parts, heat absorptivity pigment is that mean particle size is 1 to 100nm carbon black, conducting pigment is that laminar metal Ni and the chain metal Ni of 0.5 to 50 μ m forms by mean particle size, and the mass ratio of laminar metal Ni/ chain metal Ni is 0.1 to 6.

In the 3rd embodiment, heat-sink shell comprises 100 mass parts adhesive solids compositions, 10 to 150 mass parts heat absorptivity pigment and 10 to 150 mass parts ferro-silicons.

In the 4th embodiment, heat-sink shell comprises 10 to 150 mass parts ferro-silicons/100 mass parts adhesive solids compositions.

The concrete composition of heat-sink shell is identical with obducent above-mentioned those contents of relevant heating element basically in each embodiment, thereby saves specific descriptions herein.Heating element coverture described above can be used for portable and housing mobile unit.

Height heat-sink shell of the present invention can form common known coating form by the coated component that will comprise tackiness agent, and coating is applied and form on surface of shell.The example of coating form comprise by the solvent based coating that in solvent, resin dissolves is obtained, by with the resin formation emulsion and with its be dispersed to the aqueous coating of the medium acquisition of water, by the resin ground powdered is obtained powder coating, by with the resin ground powdered and with its be distributed to the medium acquisition of water the slurry powder coating, can ultraviolet ray (UV) but coating material solidified electron beam (EB) is coating material solidified, pellicular cascade and with the resin fusion, the form that is coated with then.

The thickness of high heat-sink shell is preferably 1 to 1000 μ m.If this thickness is less than 1 μ m, heat absorptivity reduces and this is unsuitable.If this thickness surpasses 1000 μ m, heat absorptivity is saturated and be not preferred economically.More preferably thickness is 10 to 500 μ m.In order to guarantee electroconductibility, more preferably 1 μ m is to being less than 10 μ m.

Usually after forming housing, on housing, be coated with height heat-sink shell of the present invention.But under the situation of sheet material, can before forming, housing be coated with the height heat-sink shell.

In the present invention, adopting the surface of heat-sink shell coating is the inboard of electronic component shell and battery container, reduces the temperature in the casting of electronic device thus.

The formation of the housing with excellent heat absorptivity of the present invention can be with shown in Fig. 1 identical.Housing of the present invention is characterised in that, housing be by, for example Mg alloy sheets 1 is formed, and the internal surface of housing adopts high-absorbable coating 2 to be coated with.In the drawings, 3 is heat-generating electronic elements or battery.

If adopting the surface of height heat-sink shell coating is not the internal surface of housing, can not obtain to reduce the effect of temperature in the casting of electronic device.But, except that the inboard, the height heat-sink shell can also be applied to the outside of housing.When also the height heat-sink shell being coated on when outside,, be easy to be released in as the systemic heat of the metal sheet of heating element housing because that thermal radiation equals the temperature of the effect of thermal absorption and housing itself is lower.Therefore, this is preferred.

In the outside of housing, can also be coated with pigmented layer to give the outward appearance of design.Pigmented layer can be made up of the multiwalled coating, and wherein under the situation of metal system housing, the rustproof layer that will comprise rust-stabilising pigment is used for the lowest layer and the pigmented layer that comprises colored pigment is provided thereon.Therefore preferably in this case, painted organic coating itself has (under the situation of multiwalled coating, comprising rustproof layer) thermal diffusivity of certain level, and it all to be applied to thickness be 10 μ m or more so that reduce the temperature of housing.

Embodiment

Describe the method that is used for the used heat-sink shell coating of preparation experiment below in detail.

With the commercially available amorphous polyester resin that is dissolved in organic solvent (below be called " vibrin ") " VILON GK140 " (number-average molecular weight: 13,000, Tg:20 ℃, by Toyobo Co., Ltd. produces) be dissolved in the organic solvent (by SOLVESSO 150 and pimelinketone are mixed acquisition with 1: 1 mass ratio).

In this vibrin that is dissolved in the organic solvent, adding 15 mass parts CYMEL 303 in per 100 mass parts polyester solids components (is produced by Mitsui Cytec Ltd., commercially available hexa methoxy-methylated melamine), adding 0.5 mass parts " CATALYST 6003B " subsequently (is produced by MitsuiCytec Ltd., commercially available an acidic catalyst), then with resulting solution stirring to obtain melamine curable polyester base Clear paint (below be called " polyester/melamine (type) ").

In order to check the effect of resin, to be dissolved in vibrin and " SUMIDULE BL3175 " in the organic solvent (by Sumitomo Bayer Urethane Co., Ltd. produce commercially available end capped isocyanic ester based on HDI) ratio that mixes to obtain [the NCO group equivalent of isocyanic ester]/[the OH group equivalent of vibrin] is 1.0.After this, add catalysts " TK-1 " (producing) by Mitsui Takeda Chemical but to based on the concentration of resin solid composition 0.05% to obtain the polyester based Clear paint (after this being called " polyester/isocyanic ester (type) ") of cured with isocyanates.

Respectively, commercially available Resins, epoxy is joined in the commercially available water-dispersed acrylic emulsion resin to obtain water-dispersed acrylic emulsion/transparent epoxy resin coating (after this being called " water-soluble acrylic ") as the amount of solids component with 5 quality %.

In addition, prepare commercially available Air drying type solvent base Clear paint (after this being called " Air drying solvent base ") and the water-soluble Clear paint of commercially available Air drying type (after this being called " Air drying water soluble paint ").

If necessary, in Clear paint each acquisition or preparation, add heat absorptivity pigment, conducting pigment and rust-stabilising pigment.Then, mixture is stirred to obtain heat-sink shell coating.The detailed description of each coating that obtains is listed among the table 1-4.

Table 1 (1/3)

Finish code	The tackiness agent kind	Heat absorptivity pigment		Conducting pigment		Other pigment that adds
								The kind of the pigment that adds	The total amount of the pigment that adds ( *1)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1)
		Coating 1-1	Polyester/melamine	Carbon black ( *2)	10	Laminar Ni/ chain Ni=6 ( *6)	10							Do not add	-
Coating 1-2	Polyester/melamine							Carbon black ( *2)	15	Laminar Ni/ chain Ni=6 ( *6)	10	Do not add	-
		Coating 1-3	Polyester/melamine	Carbon black ( *2)	100	Laminar Ni/ chain Ni=6 ( *6)	10							Do not add	-
Coating 1-4	Polyester/melamine							Carbon black ( *2)	150	Laminar Ni/ chain Ni=6 ( *6)	10	Do not add	-
		Coating 1-5	Polyester/melamine	Carbon black ( *2)	200	Laminar Ni/ chain Ni=6 ( *6)	10							Do not add	-
Coating 1-6	Polyester/melamine							Wood charcoal powder ( *3)	10	Laminar Ni/ chain Ni=6 ( *6)	10	Do not add	-
		Coating 1-7	Polyester/melamine	Graphite Powder 99 ( *4)	10	Laminar Ni/ chain Ni=6 ( *6)	10							Do not add	-
Coating 1-8	Polyester/melamine							Carbon black ( *2)	15	Laminar Ni/ chain Ni=6 ( *6)	0.1	Do not add	-
		Coating 1-9	Polyester/melamine	Carbon black ( *2)	15	Laminar Ni/ chain Ni=6 ( *6)	1							Do not add	-
Coating 1-10	Polyester/melamine							Carbon black ( *2)	15	Laminar Ni/ chain Ni=6 ( *6)	150	Do not add	-
		Coating 1-11	Polyester/melamine	Carbon black ( *2)	15	Laminar Ni/ chain Ni=0.05 ( *12)	10							Do not add	-
Coating 1-12	Polyester/melamine							Carbon black ( *2)	15	Laminar Ni/ chain Ni=1 ( *7)	10	Do not add	-
		Coating 1-13	Polyester/melamine	Carbon black ( *2)	15	Laminar Ni/ chain Ni=0.1 ( *8)	10							Do not add	-
Coating 1-14	Polyester/melamine							Carbon black ( *2)	15	Laminar Ni/ chain Ni=7 ( *13)	10	Do not add	-

Table 1 (2/3)

Finish code	The tackiness agent kind	Heat absorptivity pigment		Conducting pigment		Other pigment that adds
								The kind of the pigment that adds	The total amount of the pigment that adds ( *1)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1)
		Coating 1-15	Polyester/melamine	Carbon black ( *2)	15	The Al powder ( *9)	10							Do not add	-
Coating 1-16	Polyester/melamine							Blackout ( *2)	15	Powder of stainless steel ( *10)	10	Do not add	-
		Coating 1-17	Polyester/melamine	Carbon black ( *2)	15	Ferro-silicon ( *11)	10							Do not add	-
Coating 1-18	Polyester/melamine							Graphitized carbon black ( *5)	15	Laminar Ni/ chain Ni=6 ( *6)	10	Do not add	-
		Coating 1-19	Polyester/melamine	-	-	Ferro-silicon ( *11)	30							Do not add	-
Coating 1-20	Polyester/isocyanic ester							Carbon black ( *2)	15	The granular Ni=6 of laminar Ni/	15	Do not add	-
		Coating 1-21	The water-soluble acrylic emulsion	Carbon black ( *18)	15	The granular Ni=6 of laminar Ni/	15							Do not add	-
Coating 1-22	Polyester/melamine							Carbon black ( *2)	10	Laminar Ni/ chain Ni=6 ( *6)	10	Aerosil ( *14)	5
		Coating 1-23	Polyester/melamine	Carbon black ( *2)	10	Laminar Ni/ chain Ni=6 ( *6)	10							Calucium Silicate powder ( *15)	30
Coating 1-24	Polyester/melamine							Carbon black ( *2)	10	Laminar Ni/ chain Ni=6 ( *6)	10	Aluminium triphosphate ( *16)	30
		Coating 1-25	The water-soluble acrylic emulsion	Carbon black ( *18)	10	Laminar Ni/ chain Ni=6	10							Silica gel ( *17)	5
Coating 1-26	Polyester/melamine							Carbon black ( *2)	5	Laminar Ni/ chain Ni=6 ( *6)	10	Do not add	-

Table 1 (3/3)

Finish code	The tackiness agent kind	Heat absorptivity pigment		Conducting pigment		Other pigment that adds
								The kind of the pigment that adds	The total amount of the pigment that adds ( *1)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1)
		Coating 1-27	Polyester/melamine	Carbon black ( *2)	15	Laminar Ni/ chain Ni=6 ( *6)	200							Do not add	-
Coating 1-28	Polyester/melamine							Carbon black ( *2)	30	Laminar Ni/ chain Ni=6 ( *7)	10	Do not add	-
		Coating 1-29	Polyester/melamine	Carbon black ( *2)	15	Do not add	-							Do not add	-
Coating 1-30	Polyester/melamine							Carbon black ( *2)	18	Do not add	-	Calucium Silicate powder ( *15)	10
		Coating 1-31	Polyester/melamine	Carbon black ( *2)	19	Do not add	-							Aluminium triphosphate	10
Coating 1-32	Polyester/isocyanic ester							Carbon black ( *2)	20	Laminar Ni/ chain Ni=6 ( *7)	10	Do not add	-
		Coating 1-33	Polyester/melamine	Do not add	-	Do not add	-							Do not add	-
Coating 1-34	Polyester/melamine							Carbon black ( *2)	5	Do not add	-	Do not add	-
		Coating 1-35	Polyester/melamine	Carbon black ( *2)	200	Do not add	-							Do not add	-
Coating 1-36	Polyester/melamine							Do not add	-	Do not add	-	Titanium oxide ( *19)	15

Table 2 (1/3)

Finish code	The tackiness agent kind	Small-particle carbon		Macrobead carbon		The total amount of adding carbon ( *1)	Other pigment that adds
									The kind of the pigment that adds	The total amount of the pigment that adds ( *1) (in mass parts)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1) (in mass parts)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1) (in mass parts)
		Coating 2-1	Polyester/melamine	Small-particle carbon ( *2)	3		Macrobead carbon A ( *3)	10							13	Do not add	-
Coating 2-2	Polyester/melamine					Small-particle carbon ( *2)			10	Macrobead carbon A ( *3)	10	20	Do not add	-
		Coating 2-3	Polyester/melamine	Small-particle carbon ( *2)	20		Macrobead carbon A ( *3)	10							30	Do not add	-
Coating 2-4	Polyester/melamine					Small-particle carbon ( *2)			5	Macrobead carbon A ( *3)	5	10	Do not add	-
		Coating 2-5	Polyester/melamine	Small-particle carbon ( *2)	5		Macrobead carbon A ( *3)	20							25	Do not add	-
Coating 2-6	Polyester/melamine					Small-particle carbon ( *2)			5	Macrobead carbon A ( *3)	50	55	Do not add	-
		Coating 2-7	Polyester/melamine	Small-particle carbon ( *2)	5		Macrobead carbon A ( *3)	100							105	Do not add	-
Coating 2-8	Polyester/melamine					Small-particle carbon ( *2)			5	Macrobead carbon A ( *3)	140	145	Do not add	-
		Coating 2-9	Polyester/melamine	Small-particle carbon ( *2)	5		Macrobead carbon B ( *20)	20							25	Do not add	-

Table 2 (2/3)

Finish code	The tackiness agent kind	Small-particle carbon		Macrobead carbon		The total amount of adding carbon ( *1)	Other pigment that adds
									The kind of the pigment that adds	The total amount of the pigment that adds ( *1) (in mass parts)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1) (in mass parts)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1) (in mass parts)
		Coating 2-10	Polyester/isocyanic ester	Small-particle carbon ( *2)	5		Macrobead carbon A ( *3)	20							25	Do not add	-
Coating 2-11	Polyester/melamine					Small-particle carbon ( *2)			5	Macrobead carbon A ( *3)	20	25	Conducting pigment ( *6)	10
		Coating 2-12	Polyester/melamine	Small-particle carbon ( *2)	5		Macrobead carbon A ( *3)	20							25	Conduction and rust-stabilising pigment ( *11)	10
Coating 2-13	Polyester/melamine					Small-particle carbon ( *2)			5	Macrobead carbon A ( *3)	20	25	Rust-stabilising pigment A ( *15)	10
		Coating 2-14	Polyester/melamine	Small-particle carbon ( *2)	5		Macrobead carbon A ( *3)	20							25	Rust-stabilising pigment B ( *16)	10
Coating 2-15	Polyester/melamine					Small-particle carbon ( *2)			30	Macrobead carbon A ( *3)	10	40	Do not add	-
		Coating 2-16	Polyester/melamine	Small-particle carbon ( *2)	5		Macrobead carbon A ( *3)	180							190	Do not add	-
Coating 2-17	Polyester/melamine					Small-particle carbon ( *2)			20	Macrobead carbon A ( *3)	140	150	Do not add	-

Table 2 (3/3)

Finish code	The tackiness agent kind	Small-particle carbon		Macrobead carbon		The total amount of adding carbon ( *1)	Other pigment that adds
									The kind of the pigment that adds	The total amount of the pigment that adds ( *1) (in mass parts)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1) (in mass parts)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1) (in mass parts)
		Coating 2-18	Polyester/melamine	Small-particle carbon ( *2)	5		Macrobead carbon C ( *21)	20							30	Do not add	-
Coating 2-19	Polyester/melamine					Small-particle carbon ( *2)			-	Macrobead carbon A ( *3)	10	10	Do not add	-
		Coating 2-20	Polyester/melamine	Small-particle carbon ( *2)	0.5		Macrobead carbon A ( *3)	10							10.5	Do not add	-
Coating 2-21	Polyester/melamine					Small-particle carbon ( *2)			5	Do not add	-	5	Do not add	-
		Coating 2-22	Polyester/melamine	Small-particle carbon ( *2)	5		Macrobead carbon A ( *3)	0.5							10.5	Do not add	-
Coating 2-23	Polyester/melamine					Do not add			-	Do not add	-	-	Aluminium powder form ( *9)	20
		Coating 2-24	Polyester/melamine	Do not add	-		Do not add	-							-	Titanium oxide ( *19)	20
Coating 2-25	Polyester/melamine					Small-particle carbon ( *2)			15	Macrobead carbon A ( *3)	15	30	Do not add	-
		Coating 2-26	Polyester/melamine	Small-particle carbon ( *2)	15		Macrobead carbon A ( *3)	85							100	Do not add	-

Table 3 (1/2)

Finish code	Coating	Heat absorptivity pigment		Conducting pigment
						The kind of the pigment that adds	The total amount of the pigment that adds ( *1)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1)
		Coating 3-1	Air drying solvent base	Carbon black ( *2)	10					Laminar Ni/ chain Ni=6 ( *6)	10
Coating 3-2	Air drying solvent base					Carbon black ( *2)	15	Laminar Ni/ chain Ni=6 ( *6)	10
		Coating 3-3	Air drying solvent base	Carbon black ( *2)	100					Laminar Ni/ chain Ni=6 ( *6)	10
Coating 3-4	Air drying solvent base					Carbon black ( *2)	150	Laminar Ni/ chain Ni=6 ( *6)	10
		Coating 3-5	Air drying solvent base	Carbon black ( *2)	200					Laminar Ni/ chain Ni=6 ( *6)	10
Coating 3-6	Air drying solvent base					Wood charcoal powder ( *3)	10	Laminar Ni/ chain Ni=6 ( *6)	10
		Coating 3-7	Air drying solvent base	Graphite Powder 99 ( *4)	10					Laminar Ni/ chain Ni=6 ( *6)	10
Coating 3-8	Air drying solvent base					Carbon black ( *2)	15	Laminar Ni/ chain Ni=6 ( *6)	0.1
		Coating 3-9	Air drying solvent base	Carbon black ( *2)	15					Laminar Ni/ chain Ni=6 ( *6)	1
Coating 3-10	Air drying solvent base					Carbon black ( *2)	15	Laminar Ni/ chain Ni=6 ( *6)	150
		Coating 3-11	Air drying solvent base	Carbon black ( *2)	15					Laminar Ni/ chain Ni=0.05 ( *12)	10
Coating 3-12	Air drying solvent base					Carbon black ( *2)	15	Laminar Ni/ chain Ni=1 ( *7)	10
		Coating 3-13	Air drying solvent base	Carbon black ( *2)	15					Laminar Ni/ chain Ni=0.1 ( *8)	10

Table 3 (2/2)

Finish code	Coating	Heat absorptivity pigment		Conducting pigment
						The kind of the pigment that adds	The total amount of the pigment that adds ( *1)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1)
		Coating 3-14	Air drying solvent base	Carbon black ( *2)	15					Laminar Ni/ chain Ni=7 ( *13)	10
Coating 3-15	Air drying solvent base					Carbon black ( *2)	15	Aluminium powder form ( *9)	10
		Coating 3-16	Air drying solvent base	Carbon black ( *2)	15					Stainless Steel Powder ( *10)	10
Coating 3-17	Air drying solvent base					Carbon black ( *2)	15	Ferro-silicon ( *11)	10
		Coating 3-18	Air drying solvent base	Graphitized carbon black ( *5)	15					Laminar Ni/ chain Ni=6 ( *6)	10
Coating 3-19	Air drying solvent base					-	-	Ferro-silicon ( *11)	30
		Coating 3-20	The Air drying water soluble paint	Carbon black ( *14)	15					The granular Ni=6 of laminar Ni/	15
Coating 3-21	Air drying solvent base					Carbon black ( *2)	5	Laminar Ni/ chain Ni=6 ( *6)	10
		Coating 3-22	Air drying solvent base	Carbon black ( *2)	15					Laminar Ni/ chain Ni=6 ( *6)	200

Table 4 (1/2)

Finish code	Small-particle carbon		Macrobead carbon		The total amount of adding carbon ( *1)	Other pigment that adds
								The kind of the pigment that adds	The total amount of the pigment that adds ( *1) (in mass parts)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1) (in mass parts)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1) (in mass parts)
	Coating 4-1	Small-particle carbon ( *2)	3	Macrobead carbon A ( *3)		10	13							Do not add	-
Coating 4-2					Small-particle carbon ( *2)			10	Macrobead carbon A ( *3)	10	20	Do not add	-
	Coating 4-3	Small-particle carbon ( *2)	20	Macrobead carbon A ( *3)		10	30							Do not add	-
Coating 4-4					Small-particle carbon ( *2)			5	Macrobead carbon A ( *3)	5	10	Do not add	-
	Coating 4-5	Small-particle carbon ( *2)	5	Macrobead carbon A ( *3)		20	25							Do not add	-
Coating 4-6					Small-particle carbon ( *2)			5	Macrobead carbon A ( *3)	50	55	Do not add	-
	Coating 4-7	Small-particle carbon ( *2)	5	Macrobead carbon A ( *3)		100	105							Do not add	-
Coating 4-8					Small-particle carbon ( *2)			5	Macrobead carbon A ( *3)	140	145	Do not add	-
	Coating 4-9	Small-particle carbon ( *2)	5	Macrobead carbon B ( *20)		20	25							Do not add	-
Coating 4-10					Do not add			-	Macrobead carbon A ( *3)	10	10	Do not add	-
	Coating 4-11	Small-particle carbon ( *2)	0.5	Macrobead carbon A ( *3)		10	10.5							Do not add	-
Coating 4-12					Small-particle carbon ( *2)			30	Macrobead carbon A ( *3)	10	40	Do not add	-
	Coating 4-13	Small-particle carbon ( *2)	5	Do not add		-	5							Do not add	-

Table 4 (2/2)

Finish code	Small-particle carbon		Macrobead carbon		The total amount of adding carbon ( *1)	Other pigment that adds
								The kind of the pigment that adds	The total amount of the pigment that adds ( *1) (in mass parts)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1) (in mass parts)	The kind of the pigment that adds	The total amount of the pigment that adds ( *1) (in mass parts)
	Coating 4-14	Small-particle carbon ( *2)	5	Macrobead carbon A ( *3)		0.5	10.5							Do not add	-
Coating 4-15					Small-particle carbon ( *2)			5	Macrobead carbon A ( *3)	180	190	Do not add	-
	Coating 4-16	Small-particle carbon ( *2)	20	Macrobead carbon A ( *3)		140	160							Do not add	-
Coating 4-17					Small-particle carbon ( *2)			5	Macrobead carbon C ( *21)	20	25	Do not add	-
	Coating 4-18	Do not add	-	Do not add		-	-							Aluminium powder form ( *9)	20
Coating 4-19					Do not add			-	Do not add	-	-	Titanium oxide ( *19)	20

In table 1-4, ( ^*1)-( ^*21) as follows:

( ^*1): per 100 mass parts resin solid become the mass parts of the pigment of branch adding in the coating.

( ^*2): by " TOKA BLACK#7350F " (28nm, small-particle carbon) of Tokai Carbon production

( ^*3): by " BINCHOTANPOWDER (charcoal) " (maximum particle size: 5 μ m, macrobead carbon A) of Cooperative Association Latest production

( ^*4): use the reagent Graphite Powder 99, further with its grinding and to sieve into mean particle size by sifter be 10 μ m.

( ^*5): use " the TOKA BLACK#5500F " that produce by Tokai Carbon (25nm).

( ^*6): buy and use commercially available laminar metal Ni and chain metal Ni, by they are mixed so that the mass ratio of laminar Ni/ chain Ni is 6 (mean particle sizes: 5 μ m).

( ^*7): buy and use commercially available laminar metal Ni and chain metal Ni, by they are mixed so that the mass ratio of laminar Ni/ chain Ni is 1 (mean particle size: 5 μ m).

( ^*8): buy and use commercially available laminar metal Ni and chain metal Ni, by they are mixed so that the mass ratio of laminar Ni/ chain Ni is 0.1 (mean particle size: 5 μ m).

( ^*9): by " ALUMINUM POWDER02-0005 " (mean particle size: 10 μ m) of Toyo Aluminium K.K. production.

( ^*10): use commercially available powder of stainless steel (mean particle size: 20 μ m).

( ^*11): the ferro-silicon No.2 described in the use JIS-G2302, it is ground and sieve into mean particle size by sifter with shredder is 10 μ m.

( ^*12): buy and use commercially available laminar metal Ni and chain metal Ni, by they are mixed so that the mass ratio of laminar Ni/ chain Ni is 0.05 (mean particle size: 5 μ m).

( ^*13): buy and use commercially available laminar metal Ni and chain metal Ni, by they are mixed so that the mass ratio of laminar Ni/ chain Ni is 7 (mean particle sizes: 5 μ m).

( ^*14): use " AEROSIL300 " that produce by Nippon Aerosil (12nm).

( ^*15): use " SHELDEX C303 " (the 3 μ m) that produces by Grace.

( ^*16): use " K-WHITE the K-105 " (mean particle size: 2.3 μ m) of producing by Teika.

( ^*17): use by Nissan Chemicals Industries, (this rust-stabilising pigment is the aqueous dispersions type to " SNOWTEXN " that Ltd. produces, and is amount as solids component in the add-on shown in the table therefore; Granularity: 10-20nm).

( ^*18): by Dainichiseika Color﹠amp; Chemicals Mfg.Co., (this rust-stabilising pigment is the resin compound of aqueous dispersions type to " the AFBLACK U14 " that Ltd. produces, and only is the sooty consumption in the add-on shown in the table therefore; Granularity: 10-50nm).

( ^*19): use by Ishihara Sangyo Kaisha " TIPAQUECR-95 " that Ltd. produces.

( ^*20): using is 40 μ ms afterwards reagent Graphite Powder 99s (macrobead carbon B) with its screening as mean particle size with its grinding and by sifter further.

( ^*21): using is 60 μ ms afterwards reagent Graphite Powder 99s (macrobead carbon C) with its screening as mean particle size with its grinding and by sifter further.

At all tackiness agents shown in the table 1-4 is the Air drying type.

Below will describe embodiment in detail.

[embodiment 1]

Below will describe heat absorptivity used in the experiment in detail through preparation of plates method through surface coated.

(with its two electroplating surface to each surperficial adhesion amount is 20g/m to the electrogalvanizing steel plate that 0.6mm is thick ²) under 60 ℃, be impregnated into by " FC-364S " (by Nihon Parkerizing Co., Ltd. produces, and is commercially available alkaline defatting agent) being diluted in the aqueous solution that concentration is 20 quality % preparation 10 seconds, and carry out degreasing thus.After this, the steel plate water is cleaned and carry out drying.

After degreasing, on electrogalvanizing steel plate, be coated with preprocessing solution, and reach at the highest metal temperature under 60 ℃ the condition and carry out drying with warm air with roll coater.

In this experiment, use is by Nihon Parkerizing Co., Ltd. the commercially available chromate treating agent " ZM1300AN " of Sheng Chaning (after this being called " chromate treating agent ") or by NihonParkerizing Co., the commercially available chromate-free pretreating agent " CT-E300 " (after this being called " chromate-free treatment agent ") that Ltd. produces carries out pre-treatment.

With regard to the amount of the Cr that adheres to, adhesion amount is 50g/m when chromate treating ², and according to total coating amount, the adhesion amount when chromate-free is handled is 200g/m ²

In addition, carrying out on the pretreated electrogalvanizing steel plate, with the heat-sink shell coating shown in the roll coater coating table 1 and be used in combination hot air blowers and in induction heater, carry out dry solidification.The dry solidification condition is set, and making the highest metal temperature (PMT) is 230 ℃.On demand preprocessing solution and heat-sink shell coating are applied on a surface or two surfaces to obtain sample.

Each preparation through listing among the table 5-8 through the detailed description of the sheet material of surface coated.The table 5-7 all through in the sheet material of surface coated, under the same conditions, the heat-sink shell of identical type is applied on two surfaces, and in all of table 8 through in the sheet material of surface coated, only be applied on the surface heat-sink shell and uncoated another surface.

Table 5 (1/2)

	Numbering	Pretreated kind	The kind of coating	Bed thickness	Radiation coefficient	Heat absorptivity		The coating tackiness	Bendability	Extrusion molding	Erosion resistance		Electroconductibility
														Temperature A	Temperature B	Scratch	Cut edge
						Embodiments of the invention	I-1				Chromate-free is handled	Coating 1-1						5μm	0.80	○	○	○	○	○	△	△	○
I-2	Chromate-free is handled	Coating 1-2	5μm	0.91	○			○	○	○			○	△	△	△
							I-3				Chromate-free is handled	Coating 1-3					5μm	0.94	○	○	○	△	△	△	△	△
I-4	Chromate-free is handled	Coating 1-4	5μm	0.95	○			○	○	△			△	△	△	△
							I-5				Chromate-free is handled	Coating 1-5					5μm	0.95	○	○	○	×	×	△	△	△
I-6	Chromate-free is handled	Coating 1-6	5μm	0.80	○			○	○	○			○	△	△	△
							I-7				Chromate-free is handled	Coating 1-7					5μm	0.78	△	△	○	○	○	△	△	△
I-8	Chromate-free is handled	Coating 1-8	5μm	0.81	○			○	○	○			○	△	△	×
							I-9				Chromate-free is handled	Coating 1-9					5μm	0.92	○	○	○	○	○	△	△	○
I-10	Chromate-free is handled	Coating 1-10	5μm	0.80	○			○	○	○			○	△	△	○
							I-11				Chromate-free is handled	Coating 1-11					5μm	0.92	○	○	○	○	○	△	△	×
I-12	Chromate-free is handled	Coating 1-12	5μm	0.92	○			○	○	○			○	△	△	△
							I-13				Chromate-free is handled	Coating 1-13					5μm	0.93	○	○	○	○	○	△	△	△
I-14	Chromate-free is handled	Coating 1-14	5μm	0.72	△			△	○	○			○	△	△	○
							I-15				Chromate-free is handled	Coating 1-15					5μm	0.72	△	△	○	○	○	△	△	○
I-16	Chromate-free is handled	Coating 1-16	5μm	0.73	△			△	○	○			○	△	△	○
							I-17				Chromate-free is handled	Coating 1-17					5μm	0.95	○	○	○	○	○	○	○	○

Table 5 (2/2)

	Numbering	Pretreated kind	The kind of coating	Bed thickness	Radiation coefficient	Heat absorptivity		The coating tackiness	Bendability	Extrusion molding	Erosion resistance		Electroconductibility
														Temperature A	Temperature B	Scratch	Cut edge
						Embodiments of the invention	I-18				The chromate-free place	Coating 1-18						5μm	0.92	○	○	○	○	○	△	△	○
I-19	The chromate-free place	Coating 1-19	5μm	0.80	○			○	○	○			○	○	○	○
							I-20				The chromate-free place	Coating 1-20					5μm	0.93	○	○	○	○	○	△	△	△
I-21	The chromate-free place	Coating 1-21	5μm	0.91	○			○	○	○			○	○	○	△
							I-22				The chromate-free place	Coating 1-22					5μm	0.81	○	○	○	○	○	○	○	△
I-23	The chromate-free place	Coating 1-23	5μm	0.80	○			○	○	○			○	○	○	△
							I-24				The chromate-free place	Coating 1-24					5μm	0.82	○	○	○	○	○	○	○	△
I-25	The chromate-free place	Coating 1-25	5μm	0.80	○			○	○	○			○	○	○	△
							Comparative example				I-26	The chromate-free place					Coating 1-26	5μm	0.65	×	×	○	○	○	△	△	○
I-27	The chromate-free place	Coating 1-27	5μm	0.65	×	×		○	×	×			△	△	○

Table 6

	Numbering	Pretreated kind	The kind of coating	Bed thickness	Radiation coefficient	Heat absorptivity		The coating tackiness	Bendability	Extrusion molding	Erosion resistance		Electroconductibility
														Temperature A	Temperature B	Scratch	Cut edge
						Inventive embodiment not	I-28				Chromate-free is handled	Coating 1-2						0.5μm	0.70	△	△	○	○	○	△	△	△
I-29	Chromate-free is handled	Coating 1-2	1.0μm	0.85	○			○	○	○			○	△	△	△
							I-30				Chromate-free is handled	Coating 1-2					1 0μm	0.94	○	○	○	○	○	△	△	△
I-31	Chromate-free is handled	Coating 1-2	15μm	0.95	○			○	○	○			○	△	△	△
							1-32				Chromate-free is handled	Coating 1-2					25μm	0.95	○	○	○	○	○	△	△	△
I-33	Chromate-free is handled	Coating 1-2	50μm	0.95	○			○	○	△			△	△	△	△
							I-34				Chromate-free is handled	Coating 1-2					70μm	0.95	○	○	○	×	×	△	△	△

Table 7

	Numbering	Pretreated kind	The kind of coating	Bed thickness	Radiation coefficient	Heat absorptivity		The coating tackiness	Bendability	Extrusion molding	Erosion resistance		Electroconductibility
														Temperature A	Temperature B	Scratch	Cut edge
						Embodiments of the invention	I-35				Chromate treating	Coating 1-2						5μm	0.91	○	○	○	○	○	△	△	△
Comparative example	I-36	Do not have (being untreated)	Coating 1-2	5μm	0.91			○	○	△			△	△	×	×	△

Table 8

	Numbering	Pretreated kind	The kind of coating	Bed thickness	Radiation coefficient	Heat absorptivity		Remarks
									Temperature A	Temperature B
						Embodiments of the invention	I-37				Chromate-free is handled	Coating 1-2	5 μ m	0.91	Zero	*	In heat absorptivity test, with metal sheet be arranged so that will coating laminar surface be arranged on the inboard of casing and uncoated surface is arranged on the outside.
Comparative example	I-38	Chromate-free is handled	Coating 1-2	5 μ m	0.91			*	△	In heat absorptivity test, with metal sheet be arranged so that will coating laminar surface be arranged on the outside of casing and uncoated surface is arranged on the inboard.

Describe each prepared evaluation test below in detail through the sheet material of surface coated.

1) measures through the radiation coefficient of the sheet material of surface coated

The fourier-transform infrared spectrophotometer " VALOR-III " that use is produced by JASCO Corporation is measured 600 to 3 000cm down by being set in 80 ℃ through the plate temperature of the sheet material of surface coated ^-1The wave number district in infra-red emission.The emmission spectrum of this spectrum and standard black matrix is compared to measure the total radiation coefficient through the sheet material of surface coated.Standard black matrix used herein is 30 ± 2 μ m preparations by " spraying of THI-IB black matrix " (by the Okitsumo preparation) that sprays on iron plate available from Tacos Japan down to bed thickness.

2) through the heat absorptivity experiment with measuring of the sheet material of surface coated

Testing case shown in preparation Fig. 2 is also used it for test.Testing case 4 opened on the top and adopt the sheet material 5 through surface coated of acquisition that this face of opening is covered.In this state, temperature by 7 pairs of thermals source of temperature regulator is controlled, so that the temperature of thermal source 6 is 100 ℃, and measure the temperature A of the thermopairs 8 that are provided with in each testing case 4 and attached to temperature B through the thermopair 9 of the outside surface of the sheet material of surface coated by digital temperature meter 10.

Adopt and also measured untreated electrogalvanizing steel plate in a like fashion with thickness identical with the thickness of sheet material through surface coated to be evaluated, and, and estimate according to following standard between the sheet material of surface coated and untreated electrogalvanizing steel plate, observed value being compared of preparation.

The average of temperature A is as follows:

Zero: [{ (observed value of uncoated electrogalvanizing steel plate)-(observed value of sheet material through surface coated to be evaluated) } 〉=4 ℃]

△: [4 ℃＞{ (observed value of uncoated electrogalvanizing steel plate)-(observed value of sheet material through surface coated to be evaluated) } 〉=2 ℃]

*: [2 ℃＞{ (observed value of uncoated electrogalvanizing steel plate)-(observed value of sheet material through surface coated to be evaluated) }]

The average of temperature B is as follows:

Zero: [20 ℃ 〉={ (observed value of sheet material through surface coated to be evaluated)-(observed value of uncoated electrogalvanizing steel plate) }]

△: [30 ℃ 〉={ (observed value of sheet material through surface coated to be evaluated)-(observed value of uncoated electrogalvanizing steel plate) }＞20 ℃]

*: [{ (observed value of sheet material through surface coated to be evaluated)-(observed value of uncoated electrogalvanizing steel plate) }＞30 ℃].

3) viscosity test of Tu Bu coating

Use the cutting knife will be through the heat-sink shell cross cut of the sheet material of surface coated forming the square of 1mm, and release 7mm with Erichsen tester so that the surface of coating become protrude after, carrying out belt stripping test.

Carry out cross cut to form square according to the method described in JIS-K5400.8.2 and the JIS-K5400.8.5, release and tape stripping by Erichsen tester.In this test, belt stripping test is carried out twice (after this being called " twice of tape stripping ") continuously at the same position place.

After tape stripping, estimate according to the figure in the evaluation example of JIS-K5400.8.5.In the time must being divided into 10 points, be evaluated as zero; Be evaluated as △ when being less than 10 points when being divided into 8; And when score is less than 8 points, be evaluated as *.

4) pliability test of Tu Bu coating

The sheet material through surface coated of preparation is carried out 180 ° of bendings, and observe destruction situation, and estimate according to following standard in the coating of the coating of processing part by magnifying glass.Under 20 ℃, carry out bending (so-called 3T bending) by the pad that inserts 3 0.6mm.

Zero: the coating of coating does not have destruction fully

△: the coating layer portion of coating is destroyed

*: the coating of coating is seriously destroyed on the whole surface of processing part.

5) extrusion molding test

Use the hydraulic pressure dust to make every effort to overcome gloomy type extrusion processing tester the prepared sheet material through surface coated is carried out the cylinder tension test.By at punch diameter: 50mm, drift shoulder circularity R:5mm, mould shoulder circularity R:5mm, stretch ratio: 2.3 and the condition of BHF:1t under continuously processing until metal sheet being stretched and from mould, stretching out and carry out the cylinder tension test.

Observe the breakdown of coating situation that the place, processing part is coated with by magnifying glass, and estimate according to following standard.

Zero: coating does not have destruction fully

△: coating layer portion is destroyed

*: coating is seriously destroyed on the whole surface of processing part.

6) erosion resistance

According to the method described in the JIS-K5400.9.1 the prepared sheet material through surface coated is carried out the salt ejection test.Salt solution is ejected on the surface of heat-sink shell.Test period is 120 hours.

With cutting knife sample surfaces is scraped.When maximum foaming width is less than 2mm in the side of scratch, be zero with the coating assessment that scrapes the coating of part; Is △ when the foaming width is 2mm when being less than 5mm; And when the foaming width be 5mm or more for a long time for *.

Prepare such one flat plate, promptly make the burr of cut place become the evaluation Surface Edge of the steel plate of coating (that is, obtaining the top burr), and also carry out above-mentioned salt ejection test, and observation is from the foaming width of side cut coating.When the foaming width of side cut place was less than 2mm, the part of will cutting edge was evaluated as zero, was △ when the foaming width is 2mm when being less than 5mm, and when the foaming width be 5mm or more for a long time for *.

7) Electrical conductivity tests

Electroconductibility to prepared board measure heat-sink shell through surface coated.Measuring method is as follows.Use is by Mitsui Chemicals, and the resistrivity meter " Loresta-EP/MCP-T360 " that Inc. produces passes through the lip-deep resistivity of four-sensor method measurement through the sheet material of surface coated, and estimates according to following standard.

Zero: resistivity is less than 0.1 * 10 ^-2Ω

△: resistivity is 0.1 * 10 ^-2To being less than 1.0 * 10 ^-2Ω

*: resistivity is 1.0 * 10 ^-2Ω or more.

Each prepared evaluation result through the sheet material of surface coated is below described.

The results are shown in Table 5 to join the kind of pigment of the heat-sink shell that is coated with on the sheet material of surface coated and the effect assessment of consumption.

In the sheet material through surface coated of the present invention (embodiments of the invention I-2-I-25), 80 ℃ of temperature measure down 600 to 3,000cm ^-1The wave number district in the total radiation coefficient be 0.70 or more.And therefore, compare the heat absorption rate height with I-27 with the Comparative Example I-26 that radiation coefficient is less than under 0.70 situation.This expression sheet material through surface coated of the present invention is suitable for as the heating element coverture.

When the heat-sink shell of the sheet material through surface coated of the present invention comprises 100 mass parts adhesive solids compositions, 10 to 150 weight part heat absorptivity pigment and 1 to 150 mass parts conducting pigment, can obtain excellent machining property and electroconductibility, and therefore this is preferred.

When the consumption of the heat absorptivity pigment that is added was less than 10 mass parts (Comparative Example I-26), radiation coefficient was less than 0.70, produced the heat absorptivity of difference and therefore this is unsuitable.When the consumption of the heat absorptivity pigment that is added surpasses 150 mass parts (embodiments of the invention I-5), radiation coefficient height, but processibility, as bendability or extrusion molding reduction, therefore the consumption of the heat absorptivity pigment that is added is preferably 150 mass parts or still less.

When the consumption of the conducting pigment that is added is less than 1 mass parts (embodiments of the invention I-8), can not guarantee electroconductibility, therefore the consumption of the conducting pigment that is added is preferably 1 mass parts or more.When the consumption of the conducting pigment that is added surpassed 150 mass parts (Comparative Example I-27), conducting pigment had suppressed heat absorptivity, and the result makes radiation coefficient be less than 0.7, produce the heat absorptivity of difference, and the processibility of Tu Bu coating reduces greatly simultaneously, and therefore, this is unsuitable.

When the heat absorptivity pigment that is comprised in the heat-sink shell of the sheet material through surface coated of the present invention is that mean particle size be 1 to 100nm carbon black and conducting pigment by mean particle size is that laminar metal Ni and the chain metal Ni of 0.5 to 50 μ m forms, and the mass ratio of laminar metal Ni/ chain metal Ni is 0.1 to 6 o'clock, can provide more excellent heat absorptivity and electroconductibility, and therefore this is preferred.

When big (embodiments of the invention I-6 and I-7) relatively in the granularity of heat absorptivity pigment such as wood charcoal powder or the Graphite Powder 99, the heat absorptivity pigment that radiation coefficient is low and big relatively suppresses the conductive effect of conducting pigment, reduced electroconductibility, therefore, heat absorptivity pigment more preferably mean particle size be 1 to the carbon black of 100nm.

When the conducting pigment that is comprised in the heat-sink shell of the sheet material through surface coated of the present invention is aluminium powder form or powder of stainless steel, conducting pigment is easy to suppress heat absorptivity, and has sheet material (embodiments of the invention I-15 and the I-16) radiation coefficient that this conducting pigment joins wherein and reduce.

Be the laminar metal Ni of 0.5 to 50 μ m and the less inhibition heat absorptivity of conducting pigment that chain metal Ni forms and be preferred by mean particle size, but, when the mass ratio of laminar metal Ni/ chain metal Ni during less than 0.1 (embodiments of the invention I-11), electroconductibility reduces; And when the mass ratio of laminar metal Ni/ chain metal Ni surpasses 6 (embodiments of the invention I-14), heat absorptivity be suppressed and radiation coefficient low.Therefore, the mass ratio of laminar metal Ni/ chain metal Ni suitably is 0.1 to 6.

When conducting pigment was ferro-silicon (embodiments of the invention I-17), radiation coefficient did not reduce, and had improved the erosion resistance of the sheet material through surface coated of the present invention simultaneously, and therefore, this is preferred.When only adding ferro-silicon (embodiments of the invention I-19) when not adding heat absorptivity pigment, radiation coefficient high relatively and electroconductibility and excellent corrosion resistance, thereby this is preferred.

When using graphitized carbon black, improved electroconductibility, and therefore this is preferred as heat absorptivity pigment.Wherein except heat absorptivity pigment and conducting pigment, the sheet material through surface coated of the present invention (embodiments of the invention I-22 and I-25) that heat-sink shell comprises rust-stabilising pigment demonstrates excellent anticorrosive, and therefore this is preferred.

The different evaluation result through the sheet material of surface coated of heat-sink shell thickness is listed in table 6.When bed thickness during less than 1 μ m (embodiments of the invention I-28), the total radiation coefficient is low; And when bed thickness surpassed 50 μ m, the processibility of coating reduced; Therefore, bed thickness is preferably 1 to 50 μ m.

Adopt chromic salt as the situation (embodiments of the invention I-35) of pre-treatment treatment heat-sink shell down and the evaluation result that does not apply under the situation (embodiments of the invention I-36) of pretreating agent list in table 7.Even the kind time-like changing pretreating agent does not change radiation coefficient, heat absorptivity and other coating performance yet.

But because the sexavalent chrome that is comprised in the coating of chromate treating, there is environmental problem in the metal sheet that carries out chromate treating; And therefore, more preferably do not comprise the processing (chromate-free processing) of chromic salt.

When not applying pretreating agent, coating clinging power and erosion resistance reduce; Therefore, preferably apply pretreating agent.

, the evaluation result of heat absorptivity is listed in the table 8 during uncoated another surface when only adopting surface of heat-sink shell coating.Only adopt the metal sheet on a surface of heat-sink shell coating to be wanting in heat absorptivity than the metal sheet that two surfaces all are coated with.

Under the situation that only adopts a surface of heat-sink shell coating, when the heat-sink shell paint is covered the obducent outside (Comparative Example I-38) of the heating element that makes thermal source, almost do not obtain heat absorptivity; And therefore, this is unsuitable.

(example II)

Below describe the preparation of plates method of heat absorptivity used in the experiment in detail through surface coated.

(with its two electroplating surface to each surperficial adhesion amount is 20g/m to the electrogalvanizing steel plate that 0.6mm is thick ²) under 60 ℃, be impregnated into by " FC-364S " (by Nihon Parkerizing Co., Ltd. produces, and is commercially available alkaline defatting agent) being diluted in the aqueous solution that concentration is 20 quality % preparation 10 seconds, and carry out degreasing thus.After this, the steel plate water is cleaned and carry out drying.

After degreasing, on electrogalvanizing steel plate, handle solution with roll coater coating chemical conversion, and under the condition that provides 60 ℃ of the highest metal temperatures, carry out drying with warm air.

In this experiment, use is by Nihon Parkerizing Co., Ltd. the commercially available chromate treating agent " ZM1300AN " of Sheng Chaning (after this being called " chromate treating agent ") or by NihonParkerizing Co., the commercially available chromate-free chemical conversion treating agent " CT-E300 " (after this being called " chromate-free treatment agent ") that Ltd. produces are used for chemical conversion and handle.In chemical conversion is handled, use roll coater that two surfaces of metal sheet are handled, and under the condition that provides 60 ℃ of the highest metal temperatures, carry out drying.With regard to the amount of the Cr that adheres to, adhesion amount is 50g/m when chromate treating ², and according to total coating amount, the adhesion amount when chromate-free is handled is 200g/m ²

In addition, on a surface of carrying out the electrogalvanizing steel plate that chemical conversion handles (after this, with this surface be called surperficial a) on, with the heat-sink shell coating shown in the roll coater coating table 2 and be combined in and be used in combination hot air blowers in the induction heater and carry out dry solidification.The dry solidification condition is set, so that the highest metal temperature (PMT) is 230 ℃.On demand preprocessing solution and heat-sink shell coating are applied on a surface or two surfaces to obtain sample.Be coated with, adopt heat absorptivity coating to be coated with or to adopt colo(u)r coating to apply to another surface (after this, this surface being called surperficial b).In coloured coating, to be used for the undercoat paint of precoating steel plate, by NipponPaint Co., Ltd. " the FL641 PRIMER " of Sheng Chaning is applied to that to do thick be 5 μ m, and be to cure under 210 ℃ at PMT, and further be coated with Summoning look outer coating paint thereon, by NipponPaint Co., Ltd. " FL7100 " of Sheng Chaning is 15 μ m to doing thick, and is to cure under 230 ℃ at PMT.

The detailed description through the sheet material of surface coated of each preparation is listed among the table 9-10.In table 9-10, the thickness of heat-sink shell is dried thickness.

Table 9 (1/3)

	Numbering	The kind that chemical conversion is handled	The coating of surface a		The coating of surface b		Radiation coefficient	Heat absorptivity		Tackiness	Bendability	Extrusion molding	Erosion resistance	Electroconductibility	State during the heat absorptivity paint aging	The outward appearance of heat-sink shell
																	Kind	Bed thickness	Kind	Bed thickness	Temperature
			A	B
					Embodiments of the invention	II-1		Chromate-free is handled	Coating 2-1												5μm	Colo(u)r coating	20μm	0.75	○	○	○	○	○	○	×	○	○
II-2	Chromate-free is handled	Coating 2-2	5μm	Colo(u)r coating			20μm			0.80	○	○	○	○	○	○	×	○	○
						II-3		Chromate-free is handled	Coating 2-3											5μm	Colo(u)r coating	20μm	0.85	◎	○	○	○	○	○	×	△	○
II-4	Chromate-free is handled	Coating 2-4	5μm	Colo(u)r coating			20μm			0.71	○	○	○	○	○	○	×	○	○
						II-5		Chromate-free is handled	Coating 2-5											5μm	Colo(u)r coating	20μm	0.76	○	○	○	○	○	○	×	○	○
II-6	Chromate-free is handled	Coating 2-6	5μm	Colo(u)r coating			20μm			0.86	◎	○	○	○	○	○	×	○	○
						II-7		Chromate-free is handled	Coating 2-7											5μm	Colo(u)r coating	20μm	0.89	◎	○	○	○	○	○	×	○	○
II-8	Chromate-free is handled	Coating 2-8	5μm	Colo(u)r coating			20μm			0.90	◎	○	○	△	△	○	×	○	○

Table 9 (2/3)

	Numbering	The kind that chemical conversion is handled	The coating of surface a		The coating of surface b		Radiation coefficient	Heat absorptivity		Tackiness	Bendability	Extrusion molding	Erosion resistance	Electroconductibility	State during the heat absorptivity paint aging	The outward appearance of heat-sink shell
																	Kind	Bed thickness	Kind	Bed thickness	Temperature
			A	B
					Embodiments of the invention	II-9		Chromate-free is handled	Coating 2-9												5μm	Colo(u)r coating	20μm	0.74	○	○	○	○	○	○	×	○	△
II-10	Chromate-free is handled	Coating 2-10	5μm	Colo(u)r coating			20μm			0.77	○	○	○	○	○	○	×	○	○
						II-11		Chromate-free is handled	Coating 2-11											5μm	Colo(u)r coating	20μm	0.74	○	○	○	○	○	△	○	○	○
II-12	Chromate-free is handled	Coating 2-12	5μm	Colo(u)r coating			20μm			0.78	○	○	○	○	○	◎	○	○	○
						II-13		Chromate-free is handled	Coating 2-13											5μm	Colo(u)r coating	20μm	0.75	○	○	○	○	○	◎	×	○	○
II-14	Chromate-free is handled	Coating 2-14	5μm	Colo(u)r coating			20μm			0.74	○	○	○	○	○	◎	×	○	○
						Comparative example		II-15	Chromate-free is handled											Coating 2-15	5μm	Colo(u)r coating	20μm	0.88	◎	○	○	○	○	○	×	○	○
II-16	Chromate-free is handled	Coating 2-16	5μm	Colo(u)r coating	20μm		0.88			◎	○	○	△	△	○	×	△	○

Table 9 (3/3)

	Numbering	The kind that chemical conversion is handled	The coating of surface a		The coating of surface b		Radiation coefficient	Heat absorptivity		Tackiness	Bendability	Extrusion molding	Erosion resistance	Electroconductibility	State during the heat absorptivity paint aging	The outward appearance of heat-sink shell
																	Kind	Bed thickness	Kind	Bed thickness	Temperature
			A	B
					Comparative example	II-17		Chromate-free is handled	Coating 2-17												5μm	Colo(u)r coating	20μm	0.88	◎	○	○	△	△	○	×	△	○
II-18	Chromate-free is handled	Coating 2-18	5μm	Colo(u)r coating			20μm			0.88	○	○	○	○	○	○	×	○	×
						II-19		Chromate-free is handled	Coating 2-19											5μm	Colo(u)r coating	20μm	0.65	×	○	○	○	○	○	×	○	○
II-20	Chromate-free is handled	Coating 2-20	5μm	Colo(u)r coating			20μm			0.66	×	○	○	○	△	○	×	○	○
						II-21		Chromate-free is handled	Coating 2-21											5μm	Colo(u)r coating	20μm	0.65	×	○	○	○	△	○	×	○	○
II-22	Chromate-free is handled	Coating 2-22	5μm	Colo(u)r coating			20μm			0.65	×	○	○	○	○	○	×	○	○
						II-23		Chromate-free is handled	Coating 2-23											5μm	Colo(u)r coating	20μm	0.45	×	○	○	○	○	○	○	○	○
II-24	Chromate-free is handled	Coating 2-24	5μm	Colo(u)r coating			20μm			0.55	×	○	○	○	○	○	×	○	○

Table 10

	Numbering	The kind that chemical conversion is handled	The coating of surface a		The coating of surface b		Radiation coefficient	Heat absorptivity		Tackiness	Bendability	Extrusion molding	Erosion resistance	Electroconductibility	State during the heat absorptivity paint aging	The outward appearance of heat-sink shell
																	Kind	Bed thickness	Kind	Bed thickness	Temperature
			A	B
					Comparative example	II-25		Chromate-free is handled	Coating 2-2												0.5μm	Colo(u)r coating	20μm	0.60	×	○	○	○	○	×	×	○	○
Embodiments of the invention	II-26	Chromate-free is handled	Coating 2-2	1μm			Colo(u)r coating			20μm	0.69	△	○	○	○	○	△	×	○	○
					II-27	Chromate-free is handled		Coating 2-2	3μm												Colo(u)r coating	20μm	0.75	○	○	○	○	○	△	×	○	○
	II-28	Chromate-free is handled	Coating 2-2	5μm			Coating 2-2			5μm	0.76	○	○	○	○	○	○	×	○	○
					II-29	Chromate-free is handled		Coating 2-2	5μm												Uncoated	-	0.76	○	△	○	○	○	○	×	○	○
	II-30	Chromate-free is handled	Coating 2-2	5μm			Colo(u)r coating			20μm	0.76	○	○	○	△	△	○	×	○	○
					Comparative example	II-31		Chromate-free is handled	Coating 2-2												5μm	Colo(u)r coating	20μm	0.76	○	○	×	×	×	○	×	○	○
II-32	Chromate-free is handled	Uncoated	-	Coating 2			5μm			0.10	×	○	-	-	-	×	×	-	-

Describe each prepared evaluation test below in detail through the sheet material of surface coated.

1) measures through the radiation coefficient of the sheet material of surface coated

Identical with example I, but in this test, measure the lip-deep radiation coefficient of prepared sheet material through surface coated.

2) measure through the heat absorptivity of the sheet material of surface coated

Identical with example I, but estimate according to following standard.The judgement criteria of temperature A is as follows.In this experiment, the prepared sheet material through surface coated is placed as the inboard (heat source side) that the surface is arranged on test box.

◎: [{ (observed value of uncoated electrogalvanizing steel plate)-(observed value of sheet material through surface coated to be evaluated) } 〉=4 ℃]

Zero: [4 ℃＞{ (observed value of uncoated electrogalvanizing steel plate)-(observed value of sheet material through surface coated to be evaluated) } 〉=3 ℃]

△: [3 ℃＞{ (observed value of uncoated electrogalvanizing steel plate)-(observed value of sheet material through surface coated to be evaluated) } 〉=2 ℃]

*: [2 ℃＞{ (observed value of uncoated electrogalvanizing steel plate)-(observed value of sheet material through surface coated to be evaluated) }]

The average of temperature B is as follows:

Zero: [20 ℃ 〉={ (observed value of uncoated electrogalvanizing steel plate)-(becoming the observed value of the electro-galvanized steel of sheet material) }]

△: [{ (observed value of uncoated electrogalvanizing steel plate)-(becoming the observed value of the electro-galvanized steel of sheet material) }＞20 ℃]

3) viscosity test of Tu Bu coating

Identical with example I, condition is the tackiness of estimating in this test on a of side.

4) coating pliability test

Identical with example I, but in this test, the surface is placed as the outside of processing part, and estimate by observing to destroy at the processing part of surperficial a floating coat.

5) extrusion molding test

Identical with example I, but in this test, surperficial a is placed as the outside of processing part, and estimate by observing to destroy at the processing part of surperficial a floating coat.

6) erosion resistance

According to the method described in the JIS-K5400.9.1 the prepared sheet material through surface coated is carried out the salt ejection test.Salt solution is ejected on the surface of heat-sink shell.Test period is 72 hours.In lateral planar section of surperficial a and end face part, observe the state that white rust produces, and white rust is evaluated as ◎ when neither also not producing in planar section in end face part; When white rust produces slightly in end face part and be evaluated as zero when producing hardly in planar section; When white rust produces, and be evaluated as △ when in the part planar section, producing in end face part; And when producing in the whole surface of white rust at end face part and planar section, be evaluated as *.

7) Electrical conductivity tests

Identical with example I, but in this test, surperficial a is tested.

8) observation of state during the heat absorptivity paint aging

The heat absorptivity coating of the surperficial a of paint metal sheet put stayed normal temperature following 1 month, thereafter, the state of the coating solution that detects by an unaided eye is also estimated as follows:

Zero: the state during with the preparation coating solution is compared no change

△: the state during with preparation coating solution specific viscosity mutually raises

*: the state during with the preparation coating solution is compared, and coating solution forms colloid or solidifies.

9) outward appearance of heat-sink shell

The outward appearance of the coating that is coated with on the metal sheet in the surperficial a side of detecting by an unaided eye, and estimate as follows:

Zero: smooth surface

△: the pigment that is added is bigger than bed thickness a little, and therefore observes little irregularity on coatingsurface

*: the pigment ratio bed thickness that is added is a lot of greatly, and therefore observes serious irregularity on coatingsurface.

Below describe evaluation result in detail.

Of the present invention in the sheet material of surface coated, heat-sink shell is applied to do thick be 1 μ m or more, can obtain to have the surface treated metal sheet of high heat absorptivity whereby, wherein said heat-sink shell comprises carbon/100 mass parts adhesive solids compositions that 1 to 20 mass parts granularity is 0.1 to 50 μ m less than carbon and 1 to the 140 mass parts granularity of 0.1 μ m, and wherein the summation of the granularity carbon that is 0.1 to 50 μ m less than carbon and the granularity of 0.1 μ m is 10 to 150 mass parts.

Using the sheet material through surface coated of the present invention to prepare under the obducent situation of heating element, heat-sink shell must be in the obducent inboard of heating element.When only heat-sink shell of the present invention being applied to the obducent outside of heating element (Comparative Example I I-32), the temperature (heat absorptivity, temperature A) in the coverture reduces hardly, so this is unsuitable.

In the heat-sink shell of the sheet material through surface coated of the present invention, when under 80 ℃ of temperature 600 to 3,000cm ^-1The wave number district in the total radiation coefficient surveyed when being lower than 0.70 (embodiments of the invention II-26), the temperature (absorptivity, temperature A) in the coverture reduces hardly, so the total radiation coefficient that heat-sink shell preferably has is 0.70 or more.

When conducting pigment being joined in the heat-sink shell of the present invention (embodiments of the invention II-11), given electroconductibility and preferably used it in the purposes that requires the heating element coverture to have ground connection property etc.When rust-stabilising pigment being added in the heat-sink shell of the present invention (embodiments of the invention II-13 and II-14), improved erosion resistance; And therefore preferably use it in the purposes that requires erosion resistance.When the ferro-silicon that will have erosion resistance and electroconductibility joins in the heat-sink shell of the present invention (embodiments of the invention II-12), given electroconductibility, and improved erosion resistance in addition; Therefore, this is preferred.When only heat-sink shell being applied to the obducent inboard of heating element during the uncoated outside, the temperature (heat absorptivity, temperature A) in the coverture is low, demonstrate excellent heat absorptivity, but the temperature of metal sheet (heat absorptivity, temperature B) height itself.Therefore, more preferably heat-sink shell is coated in the obducent inboard of heating element, heat-sink shell of the present invention or common known colo(u)r coating being applied to the outside simultaneously is 10 μ m or more until thickness.

(EXAMPLE III)

Below will describe the preparation of plates method of heat absorptivity used in the experiment in detail through surface coated.

(with its two electroplating surface to each surperficial adhesion amount is 60g/m to the steel plate (GA) of the galvanizing coating anneal that 0.6mm is thick ²) under 60 ℃, be impregnated into by " FC-364S " (by Nihon Parkerizing Co., Ltd. produces, and is commercially available alkaline defatting agent) being diluted in the aqueous solution that concentration is 20 quality % preparation 10 seconds, and carry out degreasing thus.After this, the steel plate water is cleaned, carry out drying then.And (with its two electroplating surface to the plating adhesion amount on each surface is 60g/m to the aluminized steel plate that 0.6mm is thick (AL sheet material) ²) and aluminium sheet (AL) under 70 ℃, be impregnated into by with " FC-315 " (by Nihon Parkerizing Co., Ltd. produce, be the commercially available alkaline defatting agent that is used for aluminium) be diluted to the aqueous solution 10 seconds that concentration is 40 quality % preparation, and carry out degreasing thus.After this, the steel plate water is cleaned, carry out drying then.

After degreasing, on electroplating steel plate or aluminium sheet, handle solution with roll coater coating chemical conversion, and under the condition that provides 60 ℃ of the highest metal temperatures, carry out drying with warm air.

In this experiment, use by Nihon Parkerizing Co., the commercially available chromate-free chemical conversion treating agent " CT-E300 " that Ltd. produces is used for chemical conversion to be handled.In chemical conversion is handled, use roll coater that two surfaces of metal sheet are handled, and carry out drying providing under 60 ℃ of the highest metal temperatures.With regard to the amount of the Cr that adheres to, adhesion amount is 50g/m when chromate treating ², and according to total coating amount, the adhesion amount when chromate-free is handled is 200g/m ²

In addition, on a surface of carrying out the electroplating steel plate that chemical conversion handles (after this, with this surface be called surperficial a) on, with the coating 1-2 shown in the table 1 of roll coater coating example I and be used in combination hot air blowers and in induction heater, carry out dry solidification.The dry solidification condition is set, and making the highest metal temperature (PMT) is 230 ℃.On demand chemical conversion being handled solution and heat-sink shell coating is applied on a surface or two surfaces to obtain sample.Adopt colo(u)r coating to apply to another surface (after this, this surface being called surperficial b).When colorized coated, to be used for the undercoat paint of the steel plate of precoating, by Nippon Paint Co., Ltd. " FL641PRIMER " of Sheng Chaning is applied to that to do thick be 5 μ m, and be to cure under 210 ℃ at PMT, and further be coated with thereon by Summoning look outer coating paint, by Nippon Paint Co., Ltd. " FL7100 " of Sheng Chaning is 15 μ m to doing thick, and is to cure under 230 ℃ at PMT.

The detailed description through the sheet material of surface coated of each preparation is listed in the table 11.In table 11, the thickness of heat-sink shell is dried thickness.

Table 11

	Numbering	Metal charge sheet material	Radiation coefficient	Heat absorptivity		Tackiness	Bendability	Extrusion molding	Erosion resistance	Electroconductibility	Remarks
												Temperature A	Temperature B
				Embodiments of the invention	III-1									GA	0.90	Zero	Zero	Zero	Zero	Zero	Zero	Zero	-
III-2	Al sheet material	0.80	Zero			Zero	Zero	Zero	Zero	Zero	Zero	In the heat absorptivity test, the heat of metal sheet is uniform on whole surface.
					III-3								Al	0.80	○	○	○	○	○	○	○

Describe each prepared evaluation test below in detail through the sheet material of surface coated.

1) measures through the radiation coefficient of the sheet material of surface coated

Identical with example II.

2) measure through the heat absorptivity of the sheet material of surface coated

Identical with example II.

3) viscosity test of Tu Bu coating

Identical with example II.

4) coating pliability test

Identical with example II.

5) extrusion molding test

Identical with example II.

6) erosion resistance

Identical with example II.

7) Electrical conductivity tests

Identical with example II.

Below describe evaluation result in detail.

In the sheet material of surface coated, when metal charge sheet material is the steel plate of plating iron zinc alloy, during as the steel plate (embodiments of the invention III-1) of galvanizing coating anneal, improve radiation coefficient more and this is preferred of the present invention.In addition, when metal charge sheet material is the material with high thermal conductivity, during the sheet material (embodiments of the invention III-2) that obtains as aluminium (embodiments of the invention III-3) or by steel plating on this material, heat disperses in metal sheet or on the metal sheet surface to produce uniform heat on the surface of sheet metal material, and therefore, this is preferred.

(EXAMPLE IV)

Below will describe the preparation of plates method of heat absorptivity used in the experiment in detail through surface coated.

On plate-like aluminum oxide base pottery (after this being called ceramic plate), with the heat-sink shell coating shown in the scraping strip coating machine coating table 3, and dry at normal temperatures about 24 hours.Herein, on demand by with two surfaces before and after the coating paint or only surface of paint with the preparation sample.

The detailed description through the sheet material of surface coated of each preparation is listed among the table 12-14.All in the sheet material of surface coated in table 12 and 13, heat-sink shell with identical type is applied on two surfaces under the same conditions, and all in the sheet material of surface coated at table 14 only are applied to heat-sink shell on the surface and another surface is coated with.

Table 12

	Numbering	The kind of coating	Bed thickness	Radiation coefficient	Heat absorptivity	Shock strength	Electroconductibility
								Embodiments of the invention	IV-1	Coating 3-1	5μm	0.80	○	○	○
IV-2	Coating 3-2	5μm	0.91	○	○	△
							IV-3		Coating 3-3	5μm	0.94	○	○	△
IV-4	Coating 3-4	5μm	0.95	○	×	△
							IV-5		Coating 3-5	5μm	0.95	○	×	△
IV-6	Coating 3-6	5μm	0.80	○	○	△
							IV-7		Coating 3-7	5μm	0.78	△	○	△
IV-8	Coating 3-8	5μm	0.81	○	○	×
							IV-9		Coating 3-9	5μm	0.92	○	○	○
IV-10	Coating 3-10	5μm	0.80	○	○	○
							IV-11		Coating 3-11	5μm	0.92	○	○	×
IV-12	Coating 3-12	5μm	0.92	○	○	△
							IV-13		Coating 3-13	5μm	0.93	○	○	△
IV-14	Coating 3-14	5μm	0.72	△	○	○
							IV-15		Coating 3-15	5μm	0.72	△	○	○
IV-16	Coating 3-16	5μm	0.73	△	○	○
							IV-17		Coating 3-17	5μm	0.95	○	○	△
IV-18	Coating 3-18	5μm	0.92	○	○	○
							IV-19		Coating 3-19	5μm	0.80	○	○	○
IV-20	Coating 3-20	5μm	0.91	○	○	△
							Comparative example		IV-21	Coating 3-21	5μm	0.65	×	○	○
IV-22	Coating 3-22	5μm	0.65	×	×	○

Table 13

	Numbering	The kind of coating	Bed thickness	Radiation coefficient	Heat absorptivity	Bendability	Electroconductibility
								Embodiments of the invention	IV-23	Coating 3-2	0.5μm	0.70	△	○	△
IV-24	Coating 3-2	1.0μm	0.85	○	○	△
							IV-25		Coating 3-2	10μm	0.94	○	○	△
IV-26	Coating 3-2	15μm	0.95	○	○	△
							IV-27		Coating 3-2	25μm	0.95	○	○	△
IV-28	Coating 3-2	50μm	0.95	○	○	△
							IV-29		Coating 3-2	70μm	0.95	○	○	△

Table 14

	Numbering	Coating type	Bed thickness	Radiation coefficient	Heat absorptivity	Remarks
							Embodiments of the invention	IV-30	Coating 3-2	5 μ m	0.91	Zero	In the heat absorptivity experiment with measuring, the sheet material of coating is placed as makes that heat-sink shell surface is the outside for the inboard and uncoated surface of casing.
Comparative example	IV-31	Coating 3-2	5 μ m	0.91	*	In heat absorptivity test, the sheet material of coating is placed as makes that uncoated surface is that the inboard and the heat-sink shell surface of casing is the outside.

Describe the obducent evaluation test of each prepared coating below in detail.

1) measures through the radiation coefficient of the sheet material of surface coated

Identical with example I.

2) through the heat absorptivity experiment with measuring of the sheet material of surface coated

Identical with example I, but in this test, the temperature of thermopair 8 in the survey sheet 2 only.

And adopt and measure the untreated sheet material that does not adopt the coating of heat-sink shell coating in a like fashion, and observed value is compared, and estimate according to following standard.

Zero: [{ (observed value of untreated sheet material)-(observed value of surface-treated sheet material to be evaluated) } 〉=4 ℃]

△: [4 ℃＞{ (observed value of untreated sheet material)-(observed value of surface-treated sheet material to be evaluated) } 〉=2 ℃]

*: [2 ℃＞{ (observed value of untreated sheet material)-(observed value of surface-treated sheet material to be evaluated) }]

3) Electrical conductivity tests

To electroconductibility through the relevant heat-sink shell of board measure of surface coated.Measuring method is as follows.By the resistivity of electric resistance measuring apparatus (SM-8220) measurement on coatingsurface of producing by Toa Corporation, the electrode (SME-8310) by Toa Corporation production that wherein will be used for the flat samples measurement is fixing, and estimates according to following standard.

Zero: surface resistivity is less than 1.0 * 10 ⁹Ω or still less

△: surface resistivity is more than 1.0 * 10 ⁹-1.0 * 10 ¹¹Ω

*: surface resistivity is more than 1.0 * 10 ¹¹Ω.

4) impact resistance test of coating

Carry out the impact resistance test of Du Pont's mode of JIS K5400.8.2.At the trial, to be of a size of the quality of 1/2 inch (12.7mm), weight be that the height of 500g and weight is 20cm to Impact mould.After test, the sample surfaces that detects by an unaided eye, and estimate according to following standard.

Zero: do not observe the coating crack or peel off

*: observe the coating crack or peel off.

The results are shown in Table 12 to join the kind of the pigment in the heat-sink shell that is coated with on the sheet material of surface coated and the Evaluation on effect of consumption.In table 12, all results that are in the test of the samples that use two surfaces being applied to non-metallic material by heat-sink shell to obtain with the same terms.

In the sheet material through surface coated of the present invention (embodiments of the invention IV-1-IV-20), 80 ℃ of temperature or more measure down 600 to 3,000cm ^-1The wave number district in the total radiation coefficient be 0.70 or more.And therefore, compare the heat absorption rate height with 22 with the comparative example 21 that radiation coefficient is less than under 0.70 situation.This expression sheet material through surface coated of the present invention is suitable for as the heating element coverture.

When the heat-sink shell of the sheet material through surface coated of the present invention comprises 100 mass parts adhesive solids compositions, 10 to 150 weight part heat absorptivity pigment and 1 to 150 mass parts conducting pigment, and, can obtain excellent machining property and electroconductibility, and therefore this is preferred.

When the consumption of the heat absorptivity pigment that is added was less than 10 mass parts (Comparative Example I V-21), radiation coefficient was less than 0.7, produced the heat absorptivity of difference and therefore this is unsuitable.When the consumption of the heat absorptivity pigment that is added surpasses 150 mass parts (embodiments of the invention IV-5), radiation coefficient height, but shock strength reduces, therefore the consumption of the heat absorptivity pigment that is added is preferably 150 mass parts or still less.

When the consumption of the conducting pigment that is added is less than 1 mass parts (embodiments of the invention IV-8), can not guarantee electroconductibility, therefore the consumption of the conducting pigment that is added is preferably 1 mass parts or more.When the consumption of the conducting pigment that is added surpassed 150 mass parts (Comparative Example I V-22), conducting pigment had suppressed heat absorptivity, and the result makes radiation coefficient be less than 0.70, produce the heat absorptivity of difference, and the shock resistance of coating reduces greatly simultaneously, and therefore, this is unsuitable.

When being that mean particle size be 1 to 100nm carbon black and conducting pigment by mean particle size is the laminar metal Ni of 0.5 to 50 μ m and chain metal Ni forms and mass ratio when being 0.1 to 6 at the heat absorptivity pigment that is comprised in the heat-sink shell of the sheet material through surface coated of the present invention, can provide more excellent heat absorptivity and electroconductibility, and therefore this is preferred.

When relative big in the granularity of heat absorptivity pigment such as wood charcoal powder or the Graphite Powder 99 (embodiments of the invention IV-6 and IV-7), the low relatively and this heat absorptivity pigment of radiation coefficient suppresses the conductive effect of conducting pigment, thereby causes lower electroconductibility; Therefore, heat absorptivity pigment more preferably mean particle size be 1 to the carbon black of 100nm.

When the conducting pigment that is comprised in the heat-sink shell of the sheet material through surface coated of the present invention is aluminium powder form or powder of stainless steel, conducting pigment is easy to suppress heat absorptivity, and has the radiation coefficient that this conducting pigment joins sheet material (embodiments of the invention IV-15 and IV-16) wherein and be easy to reduce.

By mean particle size is that the laminar metal Ni of 0.5 to 50 μ m and conducting pigment that chain metal Ni forms less suppress heat absorptivity and be preferred, but, when the mass ratio of laminar metal Ni/ chain metal Ni during less than 0.1 (embodiments of the invention IV-11), electroconductibility reduces; And, be easy to suppress heat absorptivity and radiation coefficient and reduce when the mass ratio of laminar metal Ni/ chain metal Ni surpasses 6 (embodiments of the invention IV-14).Therefore, the mass ratio of laminar metal Ni/ chain metal Ni suitably is 0.1 to 6.

When conducting pigment was ferro-silicon (embodiments of the invention IV-17), radiation coefficient did not reduce, and therefore this is preferred.When only adding ferro-silicon (embodiments of the invention IV-19) when not adding heat absorptivity pigment, the high relatively and excellent electric conductivity of radiation coefficient, thereby this is preferred.

When using graphitized carbon black, improved electroconductibility, and therefore this is preferred as heat absorptivity pigment.

The different evaluation result through the sheet material of surface coated of heat-sink shell thickness is listed in table 13.In table 13, all results that are in the test of the samples that use two surfaces being applied to non-metallic material by heat-sink shell to obtain with the same terms.

When bed thickness during less than 1 μ m (embodiments of the invention IV-23), the total radiation coefficient is easy to step-down; Therefore, bed thickness is preferably 1 μ m or more.

, the evaluation result of heat absorptivity is listed in the table 14 during uncoated another surface when only adopting surface of heat-sink shell coating.Under the situation that only adopts a surface of heat-sink shell coating, when the heat-sink shell paint is covered the obducent outside (Comparative Example I V-31) of the heating element that makes thermal source, almost do not obtain endothermic effect; And therefore, this is unsuitable.

(EXAMPLE V)

Below will describe the preparation of plates method of heat absorptivity used in the experiment in detail through surface coated.

On the alumina-based ceramic plate, with the heat-sink shell coating shown in the scraping strip coating machine coating table 4, and dry at normal temperatures about 24 hours.Table 15 is listed in the detailed description of each prepared sheet material through surface coated.All in the sheet material of surface coated at table 15, the heat-sink shell with identical type is applied on two surfaces under the same conditions.

Describe the evaluation test of each prepared surface-treated sheet material below in detail.

1) through the radiation coefficient experiment with measuring of the sheet material of surface coated

Identical with EXAMPLE IV.

2) through the heat absorptivity experiment with measuring of the sheet material of surface coated

Identical with EXAMPLE IV.

3) impact resistance test of coating

Identical with EXAMPLE IV.

4) observation of the state between the heat-absorbing paint aging time

Adopt the mode identical to estimate each heat absorptivity coating of paint ceramic plate with example II.

5) outward appearance of heat-sink shell

Outward appearance and the employing mode identical with example II that is coated on the coating on the ceramic plate that detect by an unaided eye estimated.

Below describe the evaluation result of prepared sheet material through surface coated in detail.

As at table 15 see, of the present invention in the sheet material of surface coated, heat-sink shell is applied to do thick be 1 μ m or more, can obtain to have the surface-treated sheet material of high heat absorptivity whereby, wherein said heat-sink shell comprises carbon/100 mass parts resin solid compositions that 1 to 20 mass parts granularity is 0.1-30 μ m less than carbon and 1 to the 140 mass parts granularity of 0.1 μ m, and wherein the summation of the granularity carbon that is 0.1 to 50 μ m less than carbon and the granularity of 0.1 μ m is 10 to 150 mass parts.

Table 15

	Numbering	Heat absorptivity coating		Radiation coefficient	Heat absorptivity	Shock strength	Electroconductibility	State during the heat absorptivity paint aging	The heat-sink shell outward appearance
										Kind	Bed thickness
		Embodiments of the invention	V-1									Coating 4-1	5μm	0.75	○	○	×	○	○
V-2	Coating 4-2			5μm	0.80	○	○	×	○	○
			V-3								Coating 4-3	5μm	0.85	○	○	×	△	○
V-4	Coating 4-4			5μm	0.71	○	○	×	○	○
			V-5								Coating 4-5	5μm	0.76	○	○	×	○	○
V-6	Coating 4-6			5μm	0.86	○	○	×	○	○
			V-7								Coating 4-7	5μm	0.89	○	○	×	○	○
V-8	Coating 4-8			5μm	0.90	○	×	×	○	○
			V-9								Coating 4-9	5μm	0.74	○	○	×	○	△
Comparative example	V-10			Coating 4-10	5μm	0.65	×	○	×	○									○
		V-11	Coating 4-11								5μm	0.66	×	○	×	○	○
	Embodiments of the invention			V-12	Coating 4-12	5μm	0.88	○	○	×								○	○
Comparative example		V-13	Coating 4-13								5μm	0.65	×	○	×	○	○
	V-14			Coating 4-14	5μm	0.65	×	○	×	○								○
		Embodiments of the invention	V-15								Coating 4-15	5μm	0.88	○	×	×	△		○
V-16	Coating 4-16			5μm	0.88	○	×	×	△	○
			V-17								Coating 4-17	5μm	0.80	○	○	×	○	×
Comparative example	V-18			Coating 4-18	5μm	0.45	×	○	○	○									○
		V-19	Coating 4-19								5μm	0.55	×	○	×	○	○

(example VI)

Below will describe the preparation of plates method of coating used in the experiment in detail.

On tabular polycarbonate/ABS polymer alloy base resin (after this being called plastic plate), with coating 3-2 or the coating 3-20 shown in the scraping strip coating machine coating table 3, and dry at normal temperatures about 24 hours.Table 16 is listed in the detailed description of each prepared sheet material through surface coated.All in the sheet material of surface coated at table 16, the heat-sink shell with identical type is applied on two surfaces under the same conditions.

Describe each prepared evaluation test below in detail through the sheet material of surface coated.

1) through the radiation coefficient experiment with measuring of the sheet material of surface coated

Identical with EXAMPLE IV.

2) through the heat absorptivity experiment with measuring of the sheet material of surface coated

Identical with EXAMPLE IV.

3) impact resistance test of coating

Identical with EXAMPLE IV.

Prepared each is listed in the table 16 through the evaluation result of the sheet material of surface coated.Even when plastic material such as resin are used for base resin, the sheet material through surface coated of the present invention is being effectively aspect the heat absorptivity and is being suitable.

Table 16

	Numbering	The coating of surface a		Radiation coefficient	Heat absorptivity	Shock strength	Electroconductibility
								Kind	Bed thickness
		Embodiments of the invention	IV-1							Coating 3-2	5μm	0.91	○	○	△
IV-2	Coating 3-20			5μm	0.91	○	○	△

(example VII A)

Below will describe the preparation method of the metal sheet of the precoating of used heat absorption in the experiment in detail.

The metal sheet that 0.6mm is thick is passing through " FC4336 " (by NihonParkerizing Co under 60 ℃.Ltd. produce, be commercially available alkaline defatting agent) be diluted in the aqueous solution that concentration is 2 quality % preparation and carry out alkaline degreasing.After this, the steel plate water is cleaned, carry out drying then.Degreasing after in electrogalvanizing steel plate on, with roll coater coating chemical conversion handle solution, and under the condition that provide the highest metal temperature 60 ℃ with warm air carry out drying thereafter.

In this experiment, use following metal sheet.

GI: hot dipping electroplating steel plate (Z12)

GA: the steel plate of zinc coating anneal (F08)

AL sheet material: the Aludip (amount of the aluminium that adheres to: each surperficial 60g/m ²)

SUS: stainless-steel sheet (SUS430, surface finish)

In this experiment, use is by Nihon Parkerizing Co., Ltd. the commercially available chromate treating agent " ZM1300AN " of Sheng Chaning (after this being called " chromate treating agent ") or by NihonParkerizing Co., the commercially available chromate-free pretreating agent " CT-E300 " (after this being called " chromate-free treatment agent ") that Ltd. produces are carried out chemical conversion and are handled.In chemical conversion is handled, use roll coater that two surfaces of metal sheet are handled, and under the condition that provides 60 ℃ of the highest metal temperatures, carry out drying.With regard to the amount of the Cr that adheres to, adhesion amount is 50g/m when chromate treating ², and according to total coating amount, the adhesion amount when chromate-free is handled is 200g/m ²

In addition, a surface of carrying out the metal sheet that chemical conversion handles (after this be called surperficial a) on, be selected from the coating of above table 1 and 2 and be used in combination hot air blowers with the roll coater coating and in induction heater, carry out dry solidification.The dry solidification condition is set, and making the highest metal temperature (PMT) is 230 ℃.Use roll coater to adopt colo(u)r coating or Clear paint to apply to another surface (after this, this surface being called surperficial b).When colorized coated, to be used for the undercoat paint of precoating steel plate, by Nippon Paint Co., Ltd. " the FL641 PRIMER " of Sheng Chaning is applied to roll coater that to do thick be 5 μ m, and be to cure under 210 ℃ at PMT, and thereon further the white outer coating paint of coating, by Nippon Paint Co., Ltd. " FL3510 " of Sheng Chaning is 15 μ m to doing thick, and is to cure under 230 ℃ at PMT.For Clear paint, will be by Nippon Paint Co., it is 3 μ m that the FL5000 CLEAR that Ltd. produces is applied to thickness.Being used for priming paint (" FL641PRIMER ") at the used coloured coating of this experiment herein, is to have to add based on the chromic salt type (when when the metal sheet that carries out chromate treating applies coating) of the strontium yellow of resin solid composition 48 quality % or use to it to have the chromate-free type (when to carrying out metal sheet that chromate-free handles when applying coating) that adds the Calucium Silicate powder of 30 quality % to it.

The detailed description of the sheet material of the precoating of each preparation is listed in the table 17.In table 17, the thickness of heat-sink shell is dry thickness afterwards.

Describe the manufacture method of used refrigerator in the experiment below in detail.

Metal outer panel dismounting with commercially available undersized refrigerator.Thereafter, the metal sheet of the precoating of above-mentioned acquisition (its cutting and the metal sheet that is processed into and dismantles is identical shaped) is fixing, and the surperficial a of metal sheet that makes precoating is in the inboard of refrigerator, and makes refrigerator thus.

Describe the evaluation test of prepared sheet material through surface coated below in detail.

1) radiation coefficient of refrigerator outside plate is measured

The fourier-transform infrared spectrophotometer " VALOR-III " that use is produced by JASCO Corporation, the plate temperature of the metal sheet of the precoating by will being used for the refrigerator outside plate is set in 80 ℃ and measures 600 to 3 000cm down ^-1The wave number district in infra-red emission.The emmission spectrum of this spectrum and standard black matrix is compared to measure the total radiation coefficient of metal sheet.Standard black matrix used herein is that 30 ± 2 μ m are prepared by " spraying of THI-IB black matrix " (being produced by Okitsumo) that sprays on iron plate available from Tacos Japan down to bed thickness.

Measuring radiation coefficient on the surperficial a of prepared precoating metal sheet.

2) experiment with measuring of temperature in the refrigerator

Under normal circumstances make refrigerator running, and after the running beginning 24 hours, measure as near the temperature the electric motor of main internal heat resource with digital temperature meter by opening power.Herein, measure apart from the temperature of the position at generator 5cm place.

And, measure the temperature in the refrigerator be fixed with the metal outer panel (common metal outside plate) that initial fixation uses to the routine on the commercially available refrigerator under these conditions.Compare and estimate the measurement temperature of this temperature and the refrigerator estimated as follows.

The judgement criteria of the temperature in the refrigerator is as follows:

Zero: [{ (observed value)-(observed value of refrigerator to be evaluated) } with refrigerator of common metal outside plate 〉=4 ℃]

△: [4 ℃＞{ (observed value)-(observed value of refrigerator to be evaluated) } with refrigerator of common metal outside plate 〉=2 ℃]

*: [2 ℃＞{ (observed value)-(observed value of refrigerator to be evaluated) } with refrigerator of common metal outside plate]

3) the coating viscosity test of refrigerator outside plate

The coating that will be used for the coating on the surperficial a of prepared precoating of refrigerator outside plate uses the cutting knife cross cut forming the square of 1mm, and release 7mm with Erichsen tester so that the surperficial a of coating become protrude after, carrying out belt stripping test.

Carry out cross cut to form square, to release and tape stripping according to the method described in JIS-K5400.8.2 and the JIS-K5400.8.5 by Erichsen tester.

After tape stripping, estimate according to the figure in the evaluation example of JIS-K5400.8.5.In the time must being divided into 10 points, be evaluated as zero; Be evaluated as △ when being less than 10 points when being divided into 8; And when score is less than 8 points, be evaluated as *.

4) processibility of refrigerator outside plate

When the metal sheet of precoating that will preparation is processed into the refrigerator outside plate, the breakdown of coating situation of in the surperficial a side processing part of detecting by an unaided eye, and estimate as follows.

Zero: the coating of coating is in the part leakless of processing or peel off and have a good outward appearance

△: produce little crack and peel off on the coating of the coating in the part of processing

*: the coating stripping that almost on the whole surface of processing part, makes coating.

5) erosion resistance of refrigerator outside plate

The metal sheet that will be used for the prepared precoating of refrigerator outside plate according to the method described in the JIS-K5400.9.1 carries out the salt ejection test.Salt solution is ejected on the surperficial a of heat-sink shell.Test period is 48 hours.In the lateral planar section of surperficial a, observe the state that white rust produces, and white rust is evaluated as zero when not producing in planar section; Be evaluated as △ when not producing red rust when in planar section, producing white rust; And when in planar section, producing white rust and red rust, be evaluated as *.

6) Electrical conductivity tests of refrigerator outside plate

Electroconductibility to the measurement of the steel plate surface a of the prepared precoating of the outside plate that is used for refrigerator.Measuring method is as follows.Use is by Mitsui Chemicals, and the resistrivity meter " Loresta-EP/MCP-T360 " that Inc. produces passes through the lip-deep resistivity that the four-sensor method is measured metal sheet, and estimates according to following standard.

Zero: resistivity is less than 0.1 * 10 ^-2Ω

△: resistivity is 0.1 * 10 ^-2To being less than 1.0 * 10 ^-2Ω

*: resistivity is 1.0 * 10 ^-2Ω or more.

7) viscosity during the detection heat-sink shell paint aging changes test

The heat absorptivity coating (being selected from the coating of table 1 and 2) that adopts organic solvent (by SOLVESSO 150 and pimelinketone are mixed acquisition with 1: 1 mass ratio) will be used for this experiment dilutes, so that total solid component concentration (N.V.) is adjusted to 50 quality %.

Measure the initial viscosity of the coating that is obtained with Ford cup No.4 method.In addition, each coating is put at normal temperatures stayed for 1 week and carry out restir with agitator after, measure viscosity once more with Ford cup No.4 method, and as 1 week viscosity afterwards.With put that the viscosity of staying before or after 1 week compares and to the viscosity of each prepared coating raise estimate as follows.Evaluation result between aging time in the test of viscosity-modifying is listed in table 18.

Zero: [(viscosity after 1 week)-(initial viscosity)]＜20 seconds

△: 20≤[(viscosity after 1 week)-(initial viscosity)]＜50 seconds

*: [(viscosity after 1 week)-(initial viscosity)] 〉=50 seconds

Table 17 (1/2)

	Numbering	Metal sheet	The kind that chemical conversion is handled	The coating of surface a		The coating of surface b		Radiation coefficient	Temperature in the refrigerator	Tackiness	Processibility	Erosion resistance	Electroconductibility
														Kind	Bed thickness	Kind	Bed thickness
				Embodiments of the invention	VII-1	GI	Chromate-free is handled											Coating 1-1	5μm	Colo(u)r coating	20μm	0.70	△	○	○	△	○
VII-2	GI	Chromate-free is handled	Coating 1-2					5μm	Colo(u)r coating	20μm	0.75	○	○	○	△	○
					VII-3	GI	Chromate-free is handled										Coating 1-28	5μm	Colo(u)r coating	20μm	0.80	○	○	○	△	○
VII-4	GI	Chromate-free is handled	Coating 1-3					5μm	Colo(u)r coating	20μm	0.85	○	○	○	△	○
					VII-5	GI	Chromate-free is handled										Coating 1-4	5μm	Colo(u)r coating	20μm	0.85	○	○	○	△	○
VII-6	GI	Chromate-free is handled	Coating 1-29					5μm	Colo(u)r coating	20μm	0.75	○	○	○	○	×
					VII-7	GI	Chromate-free is handled										Coating 1-17	5μm	Colo(u)r coating	20μm	0.78	○	○	○	○	○
VII-8	GI	Chromate-free is handled	Coating 1-30					5μm	Colo(u)r coating	20μm	0.75	○	○	○	○	×
					VII-9	GI	Chromate-free is handled										Coating 1-31	5μm	Colo(u)r coating	20μm	0.75	○	○	○	○	×
VII-10	GI	Chromate-free is handled	Coating 1-32					5μm	Colo(u)r coating	20μm	0.75	○	○	○	△	○
					VII-11	GI	Chromate treating										Coating 1-2	5μm	Colo(u)r coating	20μm	0.75	○	○	○	○	○

Table 17 (2/2)

	Numbering	Metal sheet	The kind that chemical conversion is handled	The coating of surface a		The coating of surface b		Radiation coefficient	Temperature in the refrigerator	Tackiness	Processibility	Erosion resistance	Electroconductibility
														Kind	Bed thickness	Kind	Bed thickness
				Embodiments of the invention	VII-12	GI	Be untreated											Coating 1-2	5μm	Colo(u)r coating	20μm	0.75	○	△	△	△	○
VII-13	GA	Chromate-free is handled	Coating 1-2					5μm	Colo(u)r coating	20μm	0.90	○	○	○	△	○
					VII-14	EG	Chromate-free is handled										Coating 1-2	5μm	Colo(u)r coating	20μm	0.78	○	○	○	△	○
VII-15	Al sheet material	Chromate-free is handled	Coating 1-2					5μm	Clear paint	3μm	0.75	○	○	○	△	○
					VII-16	SUS	Chromate-free is handled										Coating 1-2	5μm	Clear paint	3μm	0.73	○	○	○	○	○
Comparative example	VII-17	GI	Chromate-free is handled					Coating 1-33	5μm	Colo(u)r coating	20μm	0.40	×	○	○	○											×
				VII-18	GI	Chromate-free is handled	Coating 1-34										5μm	Colo(u)r coating	20μm	0.55	×	○	○	○	×
	VII-19	GI	Chromate-free is handled					Coating 1-35	5μm	Colo(u)r coating	20μm	0.85	○	○	×	○										×
				VII-20	GI	Chromate-free is handled	Coating 1-36										5μm	Colo(u)r coating	20μm	0.56	×	○	○	○	×
	VII-21	GI	Chromate-free is handled					Uncoated	-	Colo(u)r coating	20μm	0.56	×			×										○
				Embodiments of the invention	VII-22	GI	Chromate-free is handled										Coating 2-25	5μm	Colo(u)r coating	20μm	0.80	○	○	○	△		×
VII-23	GI	Chromate-free is handled	Coating 2-26					5μm	Colo(u)r coating	20μm	0.85	○	○	○	△	×

Table 18

The kind of coating	Viscosity raises
		Coating 1-1	○
Coating 1-2	○
		Coating 1-28	△
Coating 1-3	×
		Coating 1-4	×
Coating 1-29	○
		Coating 1-17	○
Coating 1-30	○
		Coating 1-31	○
Coating 1-32	○
		Coating 1-33	○
Coating 1-34	○
		Coating 1-35	×
Coating 1-36	○
		Coating 2-25	○
Coating 2-26	△

Below describe evaluation result in detail.

Evaluation result is listed in table 17.In refrigerator of the present invention, will under certain temperature of 80 ℃ to 200 ℃, measure 600 to 3,000cm ^-1The wave number district in the total radiation coefficient be 0.70 or more heat-sink shell be applied to the internal surface of metal system outside plate, obtain the reduction of the interior temperature of refrigerator thus.Radiation coefficient at heat-sink shell is less than under the situation of 0.70 (comparative example VII-15, VII-16, VII-18 and VII-19), and the internal temperature of refrigerator does not have a great difference with the internal temperature of general type, and therefore this is unsuitable.

The heat-sink shell that is coated with on the outside plate of refrigerator of the present invention comprises 10 to 150 weight part carbon/100 mass parts adhesive solids compositions, and the radiation coefficient of heat-sink shell is 0.70 or more, and therefore this is preferred.When the consumption of the carbon that is added was less than 10 mass parts (comparative example VII-15, VII-16 and VII-18) or uncoated carbon (comparative example VII-19), radiation coefficient was less than 0.70, and therefore this is unsuitable.In addition, when the consumption of the carbon that is added surpassed 150 mass parts (comparative example VII-17), processibility reduced, and therefore this is unsuitable.

When adding conducting pigment in the heat-sink shell that on the outside plate of refrigerator of the present invention, is coated with, given electroconductibility, and the result produces less static and has eliminated the dust that produces owing to static or problem that micronic dust is adhered during the assembling refrigerator, so this is preferred.When not adding conducting pigment (embodiments of the invention VII-6, VII-8 and VII-9), poorly conductive.

When adding rust-stabilising pigment (embodiments of the invention VII-7, VII-8 and VII-9) in the heat-sink shell that on the outside plate of refrigerator of the present invention, is coated with, demonstrate excellent anticorrosive, and therefore this is preferred.Especially, when adding ferro-silicon (embodiments of the invention VII-7), not only erosion resistance but also excellent electric conductivity, and therefore this is preferred.

The heat-sink shell that is coated with on the outside plate of refrigerator of the present invention comprises carbon/100 mass parts adhesive solids compositions that 1 to 20 mass parts granularity is 0.1 to 50 μ m less than carbon and 1 to the 140 mass parts granularity of 0.1 μ m, and when the summation of the carbon that granularity is 0.1 to 50 μ m less than carbon and the granularity of 0.1 μ m is 10 to 150 mass parts (embodiments of the invention VII-20 and VII-21), in heat-sink shell, add a large amount of carbon, but it is less that the viscosity of heat absorptivity coating raises, and therefore this is preferred.

When the outside plate with refrigerator of the present invention carried out the chemical conversion processing before the coating heat-sink shell, can obtain excellent tackiness and processibility, and therefore this is preferred.When outside plate not being carried out chemical conversion processing (embodiment of the invention 12), tackiness or processibility are relatively poor.No matter whether carry out chemical conversion and handle, consider environmental problem, chromate-free is handled than chromate treating more preferably.

(example VII A I)

Describe the preparation of plates method of heat absorptivity coating used in the experiment below in detail.

On the internal surface of each aluminum alloy plate materials and magnesium alloy plate, with the heat-sink shell coating shown in the scraping strip coating machine coating table 4, and dry at normal temperatures about 24 hours.Prepared each is listed in table 19 (Al sheet alloy) and the table 20 (Mg sheet alloy) through the details of the sheet material of surface coated.All in the sheet material of surface coated in table 19 and 20, the heat-sink shell with identical type is applied on two surfaces under the same conditions.

Describe each prepared evaluation situation below in detail through the sheet material of surface coated.

1) measures through the radiation coefficient of the sheet material of surface coated

Identical with EXAMPLE IV.

2) through the heat absorptivity experiment with measuring of the sheet material of surface coated

Identical with EXAMPLE IV.

3) impact resistance test of coating

Identical with EXAMPLE IV.

4) observation of state during the heat absorptivity paint aging

Adopt the mode identical, estimate each the heat-sink shell coating on paint aluminum alloy plate materials or the magnesium alloy plate with example II.

5) outward appearance of heat-sink shell

Each heat-sink shell that on aluminum alloy plate materials or magnesium alloy plate, is coated with that detects by an unaided eye, and the employing mode identical with example II estimated.

Below describe the evaluation result of prepared sheet material through surface coated in detail.

Shown in table 19 and 20, of the present invention in the sheet material of surface coated, heat-sink shell is applied to do thick be 1 μ m or more, can obtain to have the surface-treated sheet material of high heat absorptivity whereby, wherein said heat-sink shell comprises carbon/100 mass parts resin solid compositions that 1 to 20 mass parts granularity is 0.1-30 μ m less than carbon and 1 to the 140 mass parts granularity of 0.1 μ m, and wherein the summation of the granularity carbon that is 0.1 to 50 μ m less than carbon and the granularity of 0.1 μ m is 10 to 150 mass parts.

Table 19

	Numbering	Heat absorption	Property coating	Radiation coefficient	Heat absorptivity	Shock strength	Electroconductibility	State during the heat absorptivity paint aging	The heat-sink shell outward appearance
										Kind	Bed thickness
		Embodiments of the invention	VIII-1									Coating 4-1	5μm	0.72	○	○	×	○	○
VIII-2	Coating 4-2			5μm	0.81	○	○	×	○	○
			VIII-3								Coating 4-3	5μm	0.84	○	○	×	△	○
VIII-4	Coating 4-4			5μm	0.71	○	○	×	○	○
			VIII-5								Coating 4-5	5μm	0.77	○	○	×	○	○
VIII-6	Coating 4-6			5μm	0.87	○	○	×	○	○
			VIII-7								Coating 4-7	5μm	0.90	○	○	×	○	○
VIII-8	Coating 4-8			5μm	0.91	○	×	×	○	○
			VIII-9								Coating 4-9	5μm	0.73	○	○	×	○	△
Comparative example	VIII-10			Coating 4-10	5μm	0.65	×	○	×	○									○
		VIII-11	Coating 4-11								5μm	0.65	×	○	×	○	○
	Embodiments of the invention			VIII-12	Coating 4-12	5μm	0.88	○	○	×								○	○
Comparative example		VIII-13	Coating 4-13								5μm	0.63	×	○	×	○	○
	VIII-14			Coating 4-14	5μm	0.65	×	○	×	○								○
		Embodiments of the invention	VIII-15								Coating 4-15	5μm	0.89	○	×	×	△		○
VIII-16	Coating 4-16			5μm	0.88	○	×	×	△	○
			VIII-17								Coating 4-17	5μm	0.82	○	○	×	○	×
Comparative example	VIII-18			Coating 4-18	5μm	0.44	×	○	○	○									○
		VIII-19	Coating 4-19								5μm	0.52	×	○	×	○	○

Table 20

	Numbering	Heat absorption	Property coating	Radiation coefficient	Heat absorptivity	Shock strength	Electroconductibility	State during the heat absorptivity paint aging	The heat-sink shell outward appearance
										Kind	Bed thickness
		Embodiments of the invention	VIII-20									Coating 4-1	5μm	0.77	○	○	×	○	○
VIII-21	Coating 4-2			5μm	0.83	○	○	×	○	○
			VIII-22								Coating 4-3	5μm	0.88	○	○	×	△	○
VIII-23	Coating 4-4			5μm	0.74	○	○	×	○	○
			VIII-24								Coating 4-5	5μm	0.80	○	○	×	○	○
VIII-25	Coating 4-6			5μm	0.87	○	○	×	○	○
			VIII-26								Coating 4-7	5μm	0.90	○	○	×	○	○
VIII-27	Coating 4-8			5μm	0.91	○	×	×	○	○
			VIII-28								Coating 4-9	5μm	0.75	○	○	×	○	△
Comparative example	VIII-29			Coating 4-10	5μm	0.64	×	○	×	○									○
		VIII-30	Coating 4-11								5μm	0.63	×	○	×	○	○
	Embodiments of the invention			VIII-31	Coating 4-12	5μm	0.89	○	○	×								○	○
Comparative example		VIII-32	Coating 4-13								5μm	0.63	×	○	×	○	○
	VIII-33			Coating 4-14	5μm	0.62	×	○	×	○								○
		Embodiments of the invention	VIII-34								Coating 4-15	5μm	0.89	○	×	×	△		○
VIII-35	Coating 4-16			5μm	0.88	○	×	×	△	○
			VIII-36								Coating 4-17	5μm	0.82	○	○	×	○	×
Comparative example	VIII-37			Coating 4-18	5μm	0.43	×	○	○	○									○
		VIII-38	Coating 4-19								5μm	0.54	×	○	×	○	○

(example I X)

Below will describe the preparation of plates method of coating used in the experiment in detail.

On tabular polycarbonate/ABS polymer alloy base resin (after this being called plastic plate), with coating 4-2 or the coating 4-20 shown in the scraping strip coating machine coating table 4, and dry at normal temperatures about 24 hours.Table 21 is listed in the detailed description of each prepared sheet material through surface coated.All in the sheet material of surface coated at table 21, the heat-sink shell with identical type is applied on two surfaces under the same conditions.

Describe each prepared evaluation test below in detail through the sheet material of surface coated.

1) through the radiation coefficient experiment with measuring of the sheet material of surface coated

Identical with EXAMPLE IV.

2) through the heat absorptivity experiment with measuring of the sheet material of surface coated

Identical with EXAMPLE IV.

3) impact resistance test of coating

Identical with EXAMPLE IV.

Prepared each is listed in the table 21 through the evaluation result of the sheet material of surface coated.Even when plastic material such as resin are used for base resin, the sheet material through surface coated of the present invention is being effectively aspect the heat absorptivity and is being suitable.

Table 21

	Numbering	The coating of surface a		Radiation coefficient	Heat absorptivity	Shock strength	Electroconductibility
								Kind	Bed thickness
		Embodiments of the invention	IX-1							Coating 4-2	5μm	0.91	○	○	△
IX-2	Coating 4-9			5μm	0.91	○	○	△

(embodiment X)

Below describe the preparation method of the aluminum alloy plate materials of heat absorption used in the experiment in detail.

The aluminum alloy plate materials that 0.6mm is thick is impregnated under 60 ℃ by " FC-315 " (by NihonParkerizing Co., Ltd. produces, and is commercially available alkaline defatting agent) is diluted in the aqueous solution that concentration is 20 quality % preparation, and carries out degreasing thus.After this, the sheet alloy water is cleaned and carry out drying.Thereon, further be coated with by Nihon Parkerizing Co. with roll coater, Ltd. produces, for commercially available chromate-free treatment agent " CTE-300 " to dryness adhesion amount is 200g/m ²

On the aluminum alloy plate materials of degreasing, with heat-sink shell coating roll coater coating table 1 shown in, and be used in combination hot air blowers in induction heater carry out dry solidification thereafter.The dry solidification condition is set, and making the highest metal temperature (PMT) is 230 ℃.On demand heat-sink shell coating is applied on a surface or two surfaces to obtain sample.

The detailed description of each prepared surface-treated sheet material is listed in the table 22.In all aluminum alloy plate materials of table 22, only heat-sink shell is applied to a surface and uncoated another surface.

Table 22 (1/2)

	Numbering	Coating type	Bed thickness	Radiation coefficient	Heat absorptivity	The coating tackiness	Bendability	Extrusion molding	Erosion resistance		Electroconductibility
												Temperature	Cross cut	End face
					Embodiments of the invention				X-1	Coating 1-1					5μm	0.80	○	○	○	○	△	△	○
X-2	Coating 1-2	5μm	0.91	○		○	○	○			△	△	△
									X-3	Coating 1-3				5μm	0.94	○	○	△	△	△	△	△
X-4	Coating 1-4	5μm	0.95	○		○	△	△			△	△	△
									X-5	Coating 1-5				5μm	0.95	○	○	×	×	△	△	△
X-6	Coating 1-6	5μm	0.80	○		○	○	○			△	△	△
									X-7	Coating 1-7				5μm	0.78	△	○	○	○	△	△	△
X-8	Coating 1-8	5μm	0.81	○		○	○	○			△	△	×
									X-9	Coating 1-9				5μm	0.92	○	○	○	○	△	△	○
X-10	Coating 1-10	5μm	0.80	○		○	○	○			△	△	○
									X-11	Coating 1-11				5μm	0.92	○	○	○	○	△	△	×
X-12	Coating 1-12	5μm	0.92	○		○	○	○			△	△	△
									X-13	Coating 1-13				5μm	0.93	○	○	○	○	△	△	△
X-14	Coating 1-14	5μm	0.72	△		○	○	○			△	△	○
									X-15	Coating 1-15				5μm	0.72	△	○	○	○	△	△	○
X-16	Coating 1-16	5μm	0.73	△		○	○	○			△	△	○

Table 22 (2/2)

	Numbering	Coating type	Bed thickness	Radiation coefficient	Heat absorptivity	The coating tackiness	Bendability	Extrusion molding	Erosion resistance		Electroconductibility
												Temperature	Cross cut	End face
					Embodiments of the invention				X-17	Coating 1-17					5μm	0.95	○	○	○	○	○	○	△
X-18	Coating 1-18	5μm	0.92	○		○	○	○			△	△	○
									X-19	Coating 1-19				5μm	0.80	○	○	○	○	○	○	○
X-20	Coating 1-20	5μm	0.93	○		○	○	○			△	△	△
									X-21	Coating 1-21				5μm	0.91	○	○	○	○	○	○	△
X-22	Coating 1-22	5μm	0.81	○		○	○	○			○	○	△
									X-23	Coating 1-23				5μm	0.80	○	○	○	○	○	○	△
X-24	Coating 1-24	5μm	0.82	○		○	○	○			○	○	△
									X-25	Coating 1-25				5μm	0.80	○	○	○	○	○	○	△
Comparative example	X-26	Coating 1-26	5μm	0.65		×	○	○			○	△	△										○
					X-27				Coating 1-27	5μm				0.65	×	○	×	×	△	△	○

Describe the evaluation test of each prepared aluminum alloy plate materials below in detail.

1) radiation coefficient of aluminum alloy plate materials is measured

Identical with in the example I.

2) the heat absorptivity experiment with measuring of aluminum alloy plate materials

Identical with in the EXAMPLE IV.

3) viscosity test of coating

Identical with in the example I.

4) pliability test of coating

Identical with in the example I.

5) extrusion molding test

Identical with in the example I.

6) erosion resistance

According to the method described in the JIS-K5400.9.1 prepared aluminum alloy plate materials is carried out the salt ejection test.Salt solution is ejected on the surface of heat-sink shell.Test period is 500 hours.

The coating of the coating of evaluation in the cross cut part.When maximum foaming width is less than 2mm in the side of cross cut, be evaluated as zero; Is △ when the foaming width is 2mm when being less than 5mm; And when the foaming width be 5mm or more for a long time for *.

Prepare such one flat plate, promptly make the burr of cut place become the evaluation Surface Edge of the steel plate of coating (that is, obtaining the top burr), and also carry out above-mentioned salt ejection test, and observe the foaming width of coating from the end.End face part being estimated, when the foaming width from end face is less than 2mm, be evaluated as zero, is △ when the foaming width is 2mm when being less than 5mm, and when the foaming width be 5mm or more for a long time for *.

7) Electrical conductivity tests

Identical with in the example I.

The results are shown in Table 22 in the kind of the pigment in the heat-sink shell that evaluation joins on the aluminum alloy plate materials to be coated with and the effect of consumption.

In aluminum alloy plate materials of the present invention (embodiments of the invention X-1-X-25), 80 ℃ of temperature measure down 600 to 3,000cm ^-1The wave number district in the total radiation coefficient be 0.70 or more.And therefore, compare the heat absorption rate height with X-27 with comparative example X-26.This represents that aluminum alloy plate materials of the present invention is suitable for as the heating element coverture.

When the heat-sink shell of aluminum alloy plate materials of the present invention comprises 100 mass parts adhesive solids compositions, 10 to 150 weight part heat absorptivity pigment and 1 to 150 mass parts conducting pigment, can obtain excellent machining property and electroconductibility, and therefore this is preferred.

When the consumption of the heat absorptivity pigment that is added was less than 10 mass parts (comparative example X-26), radiation coefficient was less than 0.7, produced the heat absorptivity of difference and therefore this is unsuitable.When the consumption of the heat absorptivity pigment that is added surpasses 150 mass parts (embodiments of the invention X-5), the radiation coefficient height, but processibility, as bendability or extrusion molding reduction, and the consumption of the heat absorptivity pigment that is therefore added is preferably 150 mass parts or still less.

When the consumption of the conducting pigment that is added is less than 1 mass parts (embodiments of the invention X-8), can not guarantee electroconductibility, therefore the consumption of the conducting pigment that is added is preferably 1 mass parts or more.When the consumption of the conducting pigment that is added surpassed 150 mass parts (comparative example X-27), conducting pigment had suppressed heat absorptivity, and the result makes radiation coefficient be less than 0.7, produce the heat absorptivity of difference, and the processibility of Tu Bu coating reduces greatly simultaneously, and therefore, this is unsuitable.

The heat absorptivity pigment that is comprised in the heat-sink shell at aluminum alloy plate materials of the present invention is that mean particle size be 1 to 100nm carbon black and conducting pigment by mean particle size is that laminar metal Ni and the chain metal Ni of 0.5 to 50 μ m forms, and the mass ratio of laminar metal Ni/ chain metal Ni is 0.1 to 6 o'clock, can provide more excellent heat absorptivity and electroconductibility, and therefore this is preferred.

When big (embodiments of the invention X-6 and X-7) relatively in the granularity of heat absorptivity pigment such as wood charcoal powder or the Graphite Powder 99, the heat absorptivity pigment that radiation coefficient is low and big relatively suppresses the conductive effect of conducting pigment, reduced electroconductibility, therefore, heat absorptivity pigment more preferably mean particle size be 1 to the carbon black of 100nm.

When the conducting pigment that is comprised in the heat-sink shell of aluminum alloy plate materials of the present invention is aluminium powder form or powder of stainless steel, conducting pigment is easy to suppress heat absorptivity, and has sheet material (embodiments of the invention X-15 and the X-16) radiation coefficient that this conducting pigment joins wherein and reduce.

Comprising mean particle size is laminar metal Ni and the chain metal Ni of 0.5 to 50 μ m, and the mass ratio of laminar metal Ni/ chain metal Ni is 0.1 to 6 the less inhibition heat absorptivity of conducting pigment and is preferred, but, when the mass ratio of laminar metal Ni/ chain metal Ni during less than 0.1 (embodiments of the invention X-11), electroconductibility reduces; And when the mass ratio of laminar metal Ni/ chain metal Ni surpasses 6 (embodiments of the invention X-14), suppressed heat absorptivity and radiation coefficient is low.Therefore, the mass ratio of laminar metal Ni/ chain metal Ni suitably is 0.1 to 6.

When conducting pigment was ferro-silicon (embodiments of the invention X-17), radiation coefficient did not reduce, and had improved the erosion resistance of aluminum alloy plate materials of the present invention simultaneously, and therefore, this is preferred.When only adding ferro-silicon (embodiments of the invention X-19) when not adding heat absorptivity pigment, radiation coefficient high relatively and electroconductibility and excellent corrosion resistance, thereby this is preferred.

When using graphitized carbon black, improved electroconductibility, and therefore this is preferred as heat absorptivity pigment.Wherein except heat absorptivity pigment and conducting pigment, the aluminum alloy plate materials of the present invention (embodiments of the invention X-22 and X-25) that heat-sink shell comprises rust-stabilising pigment demonstrates excellent anticorrosive, and therefore this is preferred.

The evaluation result of the aluminum alloy plate materials that heat-sink shell thickness is different is listed in table 7.When bed thickness during less than 1 μ m (embodiments of the invention X-28), the total radiation coefficient is low; And when bed thickness surpassed 50 μ m, the processibility of the coating of coating reduced; Therefore, bed thickness is preferably 1 to 50 μ m.

Industrial applicibility

According to the present invention, set up the technology of the heat that produces in the release household electrical appliance (using a large amount of elements that are used as thermal source in inside, such as engine or electronic component). In addition, provide the surface-treated material for the electric conductivity that makes household electrical appliance ground connection that is suitable for release heat and has simultaneously excellence. Use this technology, can improve the performance of household electrical appliance, and can reduce energy resource consumption. Also this technology can be applied to comprise electronic component or battery and bear the equipment of the rising of internal temperature, such as portable phone, notebook computer, PDA, on-vehicle battery housing, Vehicular navigation system, vehicle audio equipment and onboard control device, and exist such as the effect that provides that improves performance and reduction energy-output ratio. Therefore, the present invention has high industrial applicibility.

Claims (29)

1. heating element coverture with excellent heat absorptivity comprises the heating element coverture main body that has the heat-sink shell of coating on the surface at least within it, described heat-sink shell under 80 ℃ to 200 ℃ temperature, surveyed 600 to 3,000cm ^-1The wave number district in the total radiation coefficient be 0.70 or more.

2. the heating element coverture with excellent heat absorptivity described in claim 1, wherein heat-sink shell comprises 100 mass parts adhesive solids compositions and 10 to 150 mass parts heat absorptivity pigment.

3. the heating element coverture with excellent heat absorptivity described in claim 2, wherein heat-sink shell further comprises 1 to 150 mass parts conducting pigment.

4. the heating element coverture described in claim 1 with excellent heat absorptivity, wherein, with respect to per 100 mass parts adhesive solids compositions, it is the carbon of 0.1 to 50 μ m less than carbon and 1 to the 140 mass parts granularity of 0.1 μ m that heat-sink shell comprises 1 to 20 mass parts granularity, and in heat-sink shell, granularity is 10 to 150 mass parts less than the summation of the carbon that carbon and the granularity of 0.1 μ m is 0.1 to 50 μ m.

5. the heating element coverture described in claim 3 with excellent heat absorptivity, wherein heat absorptivity pigment is that mean particle size is 1 to 100nm carbon black, conducting pigment comprises that mean particle size is laminar metal Ni and the chain metal Ni of 0.5 to 50 μ m, and the mass ratio of laminar metal Ni/ chain Ni is 0.1 to 6.

6. the heating element coverture with excellent heat absorptivity described in claim 3, wherein conducting pigment is a ferro-silicon.

7. the heating element coverture with excellent heat absorptivity described in claim 1, wherein heat-sink shell comprises 100 mass parts adhesive solids compositions and 5 to 150 mass parts ferro-silicons.

8. the heating element coverture with excellent heat absorptivity described in any of claim 1-7, wherein heating element coverture main body is by the metal manufacturing.

9. the heating element coverture with excellent heat absorptivity described in any of claim 1-7, wherein heating element coverture main body is by nonmetal manufacturing.

10. surface treated metal sheet with excellent heat absorptivity, the metal sheet or the plated metal plate that comprise the heat-sink shell that on one surface, has coating at least, described heat-sink shell under 80 ℃ to 200 ℃ temperature, surveyed 600 to 3, the total radiation coefficient is 0.70 or more in the wave number district of 000cm-1.

11. the surface treated metal sheet with excellent heat absorptivity described in claim 10, wherein heat-sink shell comprises 100 mass parts adhesive solids compositions and 10 to 150 mass parts heat absorptivity pigment.

12. the surface treated metal sheet with excellent heat absorptivity described in claim 11, wherein heat-sink shell further comprises 1 to 150 mass parts conducting pigment.

13. the surface treated metal sheet described in claim 10 with excellent heat absorptivity, wherein, with respect to per 100 mass parts adhesive solids compositions, it is the carbon of 0.1 to 50 μ m less than carbon and 1 to the 140 mass parts granularity of 0.1 μ m that heat-sink shell comprises 1 to 20 mass parts granularity, and in heat-sink shell, granularity is 10 to 150 mass parts less than the summation of the carbon that carbon and the granularity of 0.1 μ m is 0.1 to 50 μ m.

14. the surface treated metal sheet described in claim 13 with excellent heat absorptivity, wherein heat absorptivity pigment is that mean particle size is 1 to 100nm carbon black, conducting pigment comprises that mean particle size is laminar metal Ni and the chain metal Ni of 0.5 to 50 μ m, and the mass ratio of laminar metal Ni/ chain Ni is 0.1 to 6.

15. the surface treated metal sheet with excellent heat absorptivity described in claim 12, wherein conducting pigment is a ferro-silicon.

16. the surface treated metal sheet with excellent heat absorptivity described in claim 10, wherein heat-sink shell comprises 100 mass parts adhesive solids compositions and 5 to 150 mass parts ferro-silicons.

17. the refrigerator with excellent heat efficient is included in the outside plate that has the heat-sink shell of coating on its internal surface, described heat-sink shell under 80 ℃ to 200 ℃ temperature, surveyed 600 to 3, the total radiation coefficient is 0.70 or more in the wave number district of 000cm-1.

18. the refrigerator with excellent heat efficient described in claim 17, wherein, with respect to per 100 mass parts adhesive solids compositions, heat-sink shell comprises 10 to 150 mass parts carbon.

19. the refrigerator with excellent heat efficient as claimed in claim 17, wherein, with respect to per 100 mass parts adhesive solids compositions, heat-sink shell comprises 1 to 50 mass parts conductive metal powder.

20. the refrigerator described in claim 17 with excellent heat efficient, wherein, with respect to per 100 mass parts adhesive solids compositions, it is the carbon of 0.1 to 50 μ m less than carbon and 1 to the 140 mass parts granularity of 0.1 μ m that heat-sink shell comprises 1 to 20 mass parts granularity, and in heat-sink shell, granularity is 10 to 150 mass parts less than the summation of the carbon that carbon and the granularity of 0.1 μ m is 0.1 to 50 μ m, and dried bed thickness is 1 μ m or more.

21. the refrigerator with excellent heat efficient is characterized in that using any one heating element coverture according to claim 1-7 as outside plate.

22. the refrigerator with excellent heat efficient is characterized in that using any one surface treated metal sheet according to claim 10-16 as outside plate, wherein the heat-sink shell with described metal sheet is placed as internal surface.

23. the refrigerator with excellent heat efficient described in any of claim 17-20 wherein is coated on transparent layer or the layer that comprises colored pigment on the outside of metal system outside plate.

24. a manufacturing has the method for the refrigerator of excellent heat absorptivity, comprise in advance the heat-sink shell described in any of on a surface of flat metal sheet coating claim 17-20 and have the metal sheet of the precoating of high heat absorptivity in another surface coated coating transparent or that contain coloured pigment with preparation, with metal sheet cutting and processing, then metal sheet is assembled into refrigerator.

25. a portable or mobile unit comprises heat-generating electronic elements and it is encapsulated in its inside and has in the housing of heat-sink shell, described heat-sink shell comprises

(A) 100 mass parts adhesive solids compositions, 1 to 20 mass parts granularity are the carbon of 0.1 to 50 μ m less than carbon and 1 to the 140 mass parts granularity of 0.1 μ m, and the summation of the granularity carbon that is 0.1 to 50 μ m less than carbon and the granularity of 0.1 μ m is 10 to 150 mass parts;

(B) 100 mass parts adhesive solids compositions, 10 to 150 mass parts heat absorptivity pigment and 1 to 150 mass parts conducting pigment, wherein heat absorptivity pigment is that mean particle size is 1 to 100nm carbon black, conducting pigment comprises that mean particle size is laminar metal Ni and the chain metal Ni of 0.5 to 50 μ m, and the mass ratio of laminar metal Ni/ chain Ni is 0.1 to 6;

(C) 100 mass parts adhesive solids compositions, 10 to 150 mass parts heat absorptivity pigment and 5 to 150 mass parts ferro-silicons; Or

(D) 100 mass parts adhesive solids compositions and 5 to 150 mass parts ferro-silicons.

26. a portable or mobile unit, the housing of portable or mobile unit that it is characterized in that being used to comprising the electronic component of heating are any one the heating element covertures according to claim 1-7.

27. a portable or mobile unit, the housing of portable or mobile unit that it is characterized in that being used to comprising the electronic component of heating are to make according to the surface treated metal sheet described in any of claim 10-16 by processing.

28. according to the portable or mobile unit described in the claim 25, its middle shell is made by Mg alloy or Al alloy.

29. one kind has the portable of heat-sink shell or a mobile unit housing described in claim 25.

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