CN101090005B - Resin coated metal sheet with excellent electromagnetic wave shielding performance - Google Patents
Resin coated metal sheet with excellent electromagnetic wave shielding performance Download PDFInfo
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- CN101090005B CN101090005B CN2007101100100A CN200710110010A CN101090005B CN 101090005 B CN101090005 B CN 101090005B CN 2007101100100 A CN2007101100100 A CN 2007101100100A CN 200710110010 A CN200710110010 A CN 200710110010A CN 101090005 B CN101090005 B CN 101090005B
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- involucra
- resin involucra
- electromagnetic wave
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
- C23C26/02—Coating not provided for in groups C23C2/00 - C23C24/00 applying molten material to the substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
- C23C28/3225—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only with at least one zinc-based layer
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Inorganic Chemistry (AREA)
- Laminated Bodies (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention resin coating metal plate with resin involucra on the surface of the metal plate, which can raise the conductivity of the resin coating metal plate, and has excellent electromagnetic interference shielding capacity, preferably under gently contacting. The said resin involucra satisfies the necessary condition of the following formula (1): PPIt>=70 ellipsis (1). The PPIt denotes thenumber of peak-valley when 1/2 of the peak count level (2H) is used as the thickness t(mu m) of resin involucra in PPI(Peaks Per Inch) recorded in SAE J911-1986.
Description
Technical field
The present invention relates to the excellent resin-coated metal plate of electromagnetic wave shielding performance (electric conductivity).Resin-coated metal plate of the present invention is for example at pressure 10～12g/mm
2About light contact under (light pressure under) also can bring into play good electrical conductivity, so for example be applicable to the former material of formation of the framework etc. of (following are representative sometimes with the electronic equipment) such as electronics, electric, optical devices.
Background technology
Along with the high performance of electronic equipment, the progress of miniaturization, for the electromagnetic wave that electronic equipment internal is produced is leaked to the outside, or do not make the electromagnetic wave of invading invade inside from electronic device exterior, and require the framework of electronic equipment etc. to have excellent electromagnetic wave shielding performance.
In order to improve the electromagnetic wave shielding performance of electronic equipment framework, recommend to use the material of excellent electric conductivity such as plated steel sheet for example.Thus, though there is the problem for example can not prevent effectively from the electromagnetic leakage of airport and routing hole in the electromagnetic wave that can decay and for example spill from steel plate gap each other.
On the other hand, open in the 2005-21572 communique, disclose a kind of resin-coated metal plate that is coated with the magnetic coating film that contains electro-magnetic wave absorption adjuvants such as Magnaglo at least at the back side of steel plate (constituting the inner side of framework) with the thickness of regulation the spy.Think thus, because the inner electromagnetic wave that produces of framework is absorbed by above-mentioned sheet metal multipath reflection etc., so finally can bring into play decay from the electromagnetic effect to the framework external leaks such as airport.
In addition, open the 2004-156081 communique the spy, the spy opens the 2005-238535 communique and the spy opens in the 2004-277876 communique, following technology is disclosed: the roughness of thickness of resin involucra by the control resin-coated metal plate and surfaceness, sheet metal particularly, improve electric conductivity, realize the raising of electromagnetic wave shielding performance thus.
Wherein, open in the 2004-156081 communique, disclose the surface treated steel plate that a kind of relation by center line average roughness (Ra) after suitably controlling epithelium and forming and epithelium average thickness has improved electromagnetic wave shielding performance the spy.Wherein, determined the relational expression of Ra and epithelium average thickness according to following understanding, that is, the electric conductivity of epithelium is by the thickness decision of the convex portion of leather film thickness attenuation relatively, during average leather film thickness same degree, increase Ra then the electric conductivity of epithelium improve.
Open in the 2005-238535 communique the spy, disclose a kind of the use and suitably controlled surface roughness Ra and PPI and utilized the electrodischarge machining roller to carry out the steel plate of skin-pass, thereby improved the surface treated steel plate of electric conductivity as the former material plate of plating.Wherein, to open the 2004-156081 communique same with described spy, records the epithelium thickness decision of the electric conductivity of epithelium by convex portion.In addition, record when the Ra same degree, the former material plate of the plating of high PPI is compared with the former material plate of the plating of low PPI, on the average line direction of roughness curve, the peak value that surpasses secant level (cut level) becomes many, so at the convex portion of the surface treated steel plate of high PPI, the parts that have the localized membrane thickness more, thus improve electric conductivity.
Open in the 2004-277876 communique the spy, disclose the surface treatment electrogalvanized steel plate that a kind of surfaceness (arithmetic average roughness Ra) by the steel plate after suitably control surface is handled is guaranteed good ground connection property.Wherein, also record if suitably control the situation that filtering center line waveform (Wca) then can improve ground connection property.
Along with the high performance of electronic equipment, the requirement that improves electromagnetic wave shielding performance is grown to even greater heights.In addition, be purpose with the cutting down cost, be desirable to provide the electromagnetic wave shielding reply parts that can omit, simplify pad and copper spring etc. strongly, under light contact, also can bring into play excellent electric conductivity, the resin-coated metal plate that electromagnetic wave shielding performance improves.
Summary of the invention
The present invention carries out in view of above-mentioned thing, its purpose is, a kind of novel resin-coated metal plate is provided, and it can bring into play excellent electromagnetic wave shielding performance by the electric conductivity that improves resin-coated metal plate, preferably also can bring into play good characteristic under light contact.
The resin-coated metal plate of the present invention that can solve above-mentioned problem is the surface-coated resin-coated metal plate that resin involucra is arranged at sheet metal, as the arithmetic average roughness Ra of the sheet metal of former material plate in the scope of 0.8～1.6 μ m, and, described resin involucra satisfies the necessary condition of following (1)
PPIt≥70......(1)
PPIt represents the concavo-convex extraction curve that is made as with resin involucra, from this average line of extracting curve out respectively to the certain datum-plane t of two direction settings of (+) negative (-) just, when being designated as 1 counting in the time of will and surpassing positive datum-plane+t above negative datum-plane-t, per 1 inch count number, at this, t represents the thickness of resin involucra.
In preferred embodiment, the glass transition point of described resin involucra (Tg) is below 60 ℃.
In preferred embodiment, described sheet metal is the alloy plating steel plate of zinc and iron family element.
In preferred embodiment, described sheet metal is an alloy galvanized steel plate.
Resin-coated metal plate of the present invention because as above-mentioned formation, so for example can also improve electric conductivity under the light contact, realize good electromagnetic wave shielding performance.
Description of drawings
Fig. 1 is the figure of notion that is used to illustrate the PPI of SAE specification.
Fig. 2 is the figure of evaluation method of the electro-magnetic wave absorption performance of explanation coated steel plates.
Fig. 3 is the figure of the state that tails off because of the resonant frequency volume reflection of framework of the electromagnetic wave of explanation input.
The key diagram of the state when Fig. 4 is pattern ground expression mensuration electromagnetic wave absorbability.
Fig. 5 is the figure of assay method that is used to illustrate the electric conductivity of resin-coated metal plate.
Fig. 6 is the key diagram of the SUS system framework (support body) of the expression framework that is configured for measuring electromagnetic wave absorbability.
Fig. 7 is the key diagram of shape of the sample steel plate of the expression left and right side part that is configured in framework.
Fig. 8 is the key diagram of the shape of the expression sample steel plate that is configured in the upper part of framework and bottom surface portions.
Embodiment
The present inventor is in order to provide for example at pressure 10～12g/mm
2About light contact under (light pressure under) also can bring into play good electrical conductivity, the resin-coated metal plate of excellent electromagnetic wave shielding performance, and studying from resin involucra and sheet metal (former material plate) both sides' side.
The present inventor is by repeatedly infrastest, and its result clearly shows, and is relevant with resin involucra, the deformation energy of resin involucra big more (that is, resin involucra is soft more), and electric conductivity is improve more.And, discovery is in order to promote the distortion of resin involucra, (1) shape of control resin involucra is the most effective, set so-called PPIt (per 1 inch peak valley number that surpasses leather film thickness t for this reason, describe in detail in the back) index alone, and (2) are according to the shape of resin involucra, the glass transition point (Tg) of suitably controlling resin involucra is also effective, has finished the present invention thus.
On the other hand, find relevant with sheet metal (former material plate), compare with always general plated steel sheet, the coated steel sheet of preferred use zinc and iron family element (Fe, Co, Ni) alloying (below, be sometimes referred to as " the alloy plating steel plate of zinc-ferro element "), wherein, consider cutting down cost, more preferably use zinc and Tie Tong to cross the fusion plating method and the alloy galvanized steel plate of alloying.
In order to obtain the resin-coated metal plate of excellent electromagnetic wave shielding performance, as mentioned above, can implement the deformation energy promotion method of resin involucra, be purpose with further raising electromagnetic wave shielding performance, preferably further suitably control the kind of sheet metal.
In this manual, so-called " excellent electromagnetic wave shielding performance " is meant that the internal-external of electronic equipment no matter can both prevent the characteristic (action effect) of electromagnetic leakage.
On the other hand, in this manual, so-called " electromagnetic wave absorbability " is meant for the characteristic that improves so-called electromagnetic wave shielding performance the characteristic of requirements such as sheet metal (former material plate).The sheet metal of excellent electromagnetic wave absorption performance for example can reduce the leakage electromagnetic wave from airport and routing hole, so excellent electromagnetic wave shielding performance.
Below, to the deformation energy promotion method of resin involucra, and the preferred kind of sheet metal is elaborated.
(the deformation energy promotion method of resin involucra)
(1) shape of resin involucra control (PPIt of resin involucra 〉=70)
In the present invention, for the technological thought that makes " deformation energy of resin involucra big more (hardness of resin involucra is more little) improves electric conductivity more " is specialized, and the parameter of the so-called PPIt that describes in detail below determining.In order to promote the deformation energy of resin involucra, the method of hardness of suitably controlling resin involucra self is the most effective, but it is very difficult to measure the hardness that is overlayed on the resin involucra on the sheet metal, therefore, in the present invention, be not the hardness of control resin involucra, but the shape (at this, being PPIt) of control resin involucra.
Resin-coated metal plate generally when the thickness of resin involucra is big the concavo-convex of sheet metal do not exert an influence.But sheet metal was concavo-convex big to the thick influence degree of resin involucra when resin involucra was thin, at the sheet metal protuberance tendency of resin involucra attenuation was arranged, and the thickness of resin involucra changes according to the position.
PPIt is that the peak counting horizontal transformation with normalized PPI (Peaks PerInch) among the SAE J911-JUN86 (1986) of the U.S. is that the thickness t (μ m) of resin involucra forms, and is determined alone by the present inventor as the index of the deformation energy of expression resin involucra.
Below, with reference to Fig. 1 the PPI of SAE specification and the difference of PPIt given to this invention are described.
At first, the PPI of so-called SAE specification is meant, from the average line of extracting curve f (x) out respectively (therefore to the certain datum-plane H of two direction settings of (+) negative (-) just, the width of positive and negative datum-plane=2H), will be above negative datum-plane (H, when being designated as " 1 counting " when the paddy part) also surpassing positive datum-plane (+H, peak part), the count number of per 1 inch (25.4mm) (number of peak-paddy counting).At this, the width of positive and negative datum-plane (2H) is called as the peak counting level, is fixed value, is decided to be 2H=50 μ inch usually.
With respect to this, the width (2H) that PPIt given to this invention does not make positive and negative datum-plane is fixed value as above-mentioned, and the thickness t (μ m) that is based on resin involucra is set.That is, in Fig. 1, by establishing H=t, thereby, measure the number of peak-paddy counting of the thickness t that surpasses resin involucra for PPIt.This is to consider in the jog of resin involucra, and the part (firing point) that can bring into play electric conductivity is the peak part (convex portion) of the thin thickness of resin involucra, and the concave portion that the thickness of resin involucra is thick can not become firing point, thereby set.Also have, for t, try to achieve the average thickness of resin bed, thereby use its value by method described later.In Fig. 1, transverse axis is to measure distance, extracts curve out and be the concavo-convex of the resin involucra surface of extracting covered metal plate out.According to the present invention, become the number that many modes are measured the peak-paddy counting according to the thickness t of resin involucra with the number of the peak part of the thin thickness of resin involucra, therefore compare with the existing method of using PPI, can estimate relation accurately with electric conductivity.
That is, for example, spy as described opens the 2005-238535 communique, in the method for the PPI that uses the SAE specification, even the thick convex portion of the thickness of resin involucra is arranged, above also all being counted of peak counting level (2H) that stipulate.But, electric conductivity is by the thickness decision of the epithelium of the convex portion (peak part) of the thin thickness of resin involucra, the peak part that the thickness of resin involucra is thick can not become firing point, therefore only measure in the said method of number of peak valley counting at the thickness that gives no thought to resin involucra, can not correctly hold relation with electric conductivity.
With respect to this, in the present invention, as above-mentioned, with measuring " PPIt " of the number of counting according to the peak-paddy of the thickness of resin involucra index, so can correctly hold the part that becomes firing point as electric conductivity.Compare with sheet metal at the resin involucra of firing point part (peak part) very unfertile land lining very soft, even therefore under light contact this resin involucra also can be out of shape, thereby can access excellent electric conductivity.
In order to bring into play deformation energy facilitation effectively, guarantee excellent electric conductivity, and PPIt is made as more than 70 based on the resin involucra of the control of PPIt.PPIt is lower than at 70 o'clock, shown in the embodiment, can not obtain excellent electric conductivity as described later.PPIt is the bigger the better, and thus, can increase the number that can become the peak of firing point part.In addition, if increase the number of peak part, then the pressure to the part that the peak part applies rises, its result, and therefore the whole easy deformation of resin involucra can promote the distortion under the light contact.PPIt for example is preferably more than 100, more preferably more than 120, more preferably more than 150.Also have, the upper limit of PPIt is not particularly limited, but when PPIT becomes excessive, produces the inequality of resin involucra, be difficult to make adhesion amount even, in addition, it is unstable that outward appearance becomes, and considers these, preferably roughly be located at below 500, more preferably below 400, more preferably below 300.
The control method of PPIt describes in detail in the back.
As the substrate resin that constitutes resin involucra, for example can list polyester based resin, propylene resin, polyurethane series resin, polyolefin-based resins, fluorine resin, silicon and be the potpourri of resin and these resins or modified resins etc.Also have, resin-coated metal plate of the present invention is mainly used in the framework of electronic equipment, more require to have characteristics such as bendability, connecting airtight property of epithelium, corrosion stability if consider, then preferred polyester resin or modified polyester resin (for example, adding epoxy resin in the unsaturated polyester resin and modified resins).
Resin involucra can also contain crosslinking chemical outside described substrate resin.The kind of crosslinking chemical is so long as just being not particularly limited of generally using in the resin-coated metal plate for example, can list melamine based compound, isocyanate based compound etc.These can use separately also and can and use.The content of crosslinking chemical (total amount) is preferred roughly in the scope of 0.5～30 quality %.
(2) control of the glass transition point of resin involucra (Tg)
According to the present invention, can promote the distortion of resin involucra by the shape (PPIt) of as above-mentioned (1), controlling resin involucra, its result can improve electric conductivity, is purpose with further raising characteristic still, and preferably the glass transition point (Tg) with resin involucra is controlled at below 60 ℃.The PPIt of the control of the Tg of resin involucra, particularly resin involucra can effectively bring into play in about 70～250 scope the time, thus, can further improve the deformation energy facilitation (with reference to embodiment described later) of resin involucra.With respect to this, the PPIt of resin involucra is for example about more than 350 when very big, though the Tg of resin involucra, owing to can bring into play the deformation energy facilitation of the PPIt control of resin involucra to greatest extent, even, also can access the electric conductivity of expectation so the Tg of resin involucra surpasses 60 ℃.
At this, the Tg of so-called resin involucra is meant the Tg of resin involucra integral body.Describe in detail as the back, in resin involucra, except substrate resin and crosslinking chemical that formation is filmed, also can contain known adjuvant such as rust preventive and matting agent, pigment etc., because Tg is not subjected to the influence of the mineral compound of rust preventive etc., so the Tg of resin involucra is in fact by the kind and the addition decision of substrate resin that uses and crosslinking chemical.
Therefore, in order to control the Tg of resin involucra,, suitably regulate use level and get final product according to kind as the substrate resin and the crosslinking chemical of major component.The Tg of resin involucra is arranged by the Tg of substrate resin to a great extent.In addition, the content of substrate resin is more many than crosslinking chemical, and the Tg of resin involucra has the tendency of decline more, and on the contrary, the content of substrate resin lacks than crosslinking chemical more, and the tendency of rising is just arranged more.For the Tg of resin involucra control, consider above-mentioned aspect, at first, select to have and substrate resin as the approaching Tg of the Tg of target, this substrate resin and crosslinking chemical are cooperated, get final product and the Tg of resin involucra is controlled in the specialized range.
Below, the typical example of the resin involucra that uses as the present invention shown in the embodiment, is enumerated as substrate resin and is used polyester based resin as described later, and using melamine as crosslinking chemical is the situation of resin, and the control method of Tg is carried out specific description.
As polyester based resin, the representational weaving of Japan for example (strain) system can enumerated, バ イ ロ Application series.Specifically, can list: バ イ ロ Application 103 (Tg: about 47 ℃), バ イ ロ Application 200 (Tg: about 67 ℃), バ イ ロ Application 220 (Tg: about 53 ℃), バ イ ロ Application 240 (Tg: about 60 ℃), バ イ ロ Application 245 (Tg: about 60 ℃), バ イ ロ Application 270 (Tg: about 67 ℃), バ イ ロ Application 280 (Tg: about 68 ℃), バ イ ロ Application 290 (Tg: about 72 ℃), バ イ ロ Application 296 (Tg: about 71 ℃), バ イ ロ Application 300 (Tg: about 7 ℃), バ イ ロ Application 500 (Tg: about 4 ℃), バ イ ロ Application 530 (Tg: about 5 ℃), バ イ ロ Application 550 (Tg: approximately-15 ℃), バ イ ロ Application 560 (Tg: about 7 ℃), バ イ ロ Application 600 (Tg: about 47 ℃), バ イ ロ Application 630 (Tg: about 7 ℃), バ イ ロ Application 650 (Tg: about 10 ℃), バ イ ロ Application GK110 (Tg: about 50 ℃), バ イ ロ Application GK130 (Tg: about 15 ℃), バ イ ロ Application GK140 (Tg: about 20 ℃), バ イ ロ Application GK150 (Tg: about 20 ℃), バ イ ロ Application GK180 (Tg: about 0 ℃), バ イ ロ Application GK190 (Tg: about 11 ℃), バ イ ロ Application GK250 (Tg: about 60 ℃), バ イ ロ Application GK330 (Tg: about 16 ℃), バ イ ロ Application GK590 (Tg: about 15 ℃), バ イ ロ Application GK640 (Tg: about 79 ℃), バ イ ロ Application GK680 (Tg: about 10 ℃), バ イ ロ Application GK780 (Tg: about 36 ℃), バ イ ロ Application GK810 (Tg: about 46 ℃), バ イ ロ Application GK880 (Tg: about 84 ℃), バ イ ロ Application GK890 (Tg: about 17 ℃), バ イ ロ Application BX1001 (Tg: approximately-18 ℃) etc.These Tg are temperature of putting down in writing in the products catalogue.
As melamine is that resin for example can be enumerated Sumitomo Chemical (strain) system ス ミ マ-Le M-40ST etc.
In embodiment described later, for the Tg with resin involucra is controlled to be setting (10 ℃, 25 ℃, 40 ℃, 60 ℃, 75 ℃), and from described polyester based resin, select to have polyester based resin with the approaching Tg of setting Tg, and and melamine be that resin cooperates.Specifically, shown in following table 1.
[table 1]
The Tg of resin involucra can use DSC (differential scanning calorimetry) to measure by conventional method.
If improve the viewpoint of electric conductivity from the deformation energy that promotes resin involucra, the Tg of resin involucra is low more good more, for example, and preferably below 55 ℃, more preferably below 50 ℃, further preferably below 45 ℃.
Also have, the lower limit of Tg is not particularly limited from the viewpoint of electric conductivity, characteristic when Tg is low beyond the desired electromagnetic wave shielding performance of framework of electronic equipment (for example, flaw resistance and corrosion stability etc.) reduce, therefore roughly be preferably more than 10 ℃, more preferably more than 15 ℃, more preferably more than 20 ℃.
(kind of sheet metal)
In order to obtain the resin-coated metal plate of excellent electromagnetic wave shielding performance, as previously mentioned, the shape of control resin involucra, or the Tg of preferred further control resin involucra gets final product, but also can improve electromagnetic wave absorbability by the kind of controlling sheet metal as follows, its result can further improve electromagnetic wave shielding performance.In addition, as follows, can promote the distortion of resin involucra by the sheet metal that uses hardness big (deformation energy of sheet metal is little), improve the tendency of electric conductivity in addition, therefore, its result thinks can access good electromagnetic wave shielding performance.
As the sheet metal that the present invention uses, compare the coated steel sheet (the alloy plating steel plate of zinc-iron family element) of preferred zinc and iron family element (Fe, Co, Ni) alloying with the plated steel sheet of existing widespread use.
As the alloy plating steel plate of zinc-iron family element, can enumerate the alloy plating steel plate of alloy plating steel plate, Zn and Co of alloy plating steel plate, Zn and the Ni of Zn and Fe.If from guaranteeing the viewpoint of electromagnetic wave absorbability, Fe, Ni, Co content all preferably roughly are controlled in the scope of 5～20 quality %.Also have, the method for plating is not particularly limited, and all can obtain by arbitrary method in fusion plating method, the electrochemical plating.Also have, the detailed plating condition of fusion plating method, electrochemical plating is not particularly limited, and can adopt the normally used method of alloying.
If consider electromagnetic wave absorbability, then the adhesion amount of plating is few more good more, for example, is preferably 50g/m
2Below, 40g/m more preferably
2Below, 35g/m more preferably
2Below, most preferably be 30mg/m
2Below.The lower limit of plating adhesion amount is not particularly limited from the viewpoint of electromagnetic wave absorbability, if but consider corrosion stability etc., then for example be preferably 5g/m
2, 10g/m more preferably
2
In addition, if consider cost etc., then most preferably using can be cheap and the alloy galvanized steel plate (making the steel plate of Zn and Fe alloying by the fusion plating method) of easy manufacturing.
As mentioned above, recommend to use the alloying coated steel sheet as sheet metal among the present invention, in addition, also can use the plating adhesion amount to be controlled at about 15g/m
2Following pure zinc coated steel sheet or cold-rolled steel sheet.This is because these steel plates also have excellent electro-magnetic wave absorption effect, can realize the electric conductivity (with reference to embodiment described later) of wishing.In addition, as mentioned above,, can avoid the problem of alloying steel plate in using (for example, the crackle that produces during bending machining etc. breaks and peel off etc.) by using the steel plate do not carry out alloying.
For example, if use the cold-rolled steel sheet that does not carry out plating, then can be used to process strict purposes.If particularly, compare cold-rolled steel sheet as can be known with the alloying steel plate and have excellent electromagnetic wave absorbability (with reference to aftermentioned embodiment) only from improving the viewpoint of electromagnetic wave absorbability.But the corrosion stability of cold-rolled steel sheet is poor, if consider to be used for the framework of electronic equipment, then its overall characteristic thinks poorly of, and therefore compares preferred use alloying coated steel sheet with cold-rolled steel sheet.
On the other hand, if use pure zinc coated steel sheet, then can be used in and process acutely and require corrosion proof purposes.In order to bring into play corrosion stability effectively, the plating adhesion amount is preferably about 3g/m
2More than, 6g/m more preferably
2More than.Also have, if consider electromagnetic wave absorbability, then the upper limit of plating adhesion amount is preferably 15g/m
2, 12g/m more preferably
2, 10g/m more preferably
2
More than, the necessary condition that characterizes resin involucra of the present invention and the kind of sheet metal are illustrated.
The thickness of resin involucra (average thickness) is preferred roughly in the scope of 0.1～3.0 μ m.If thickness is outside above-mentioned scope, then the characteristic (bendability, connecting airtight property of epithelium, corrosion stability etc.) beyond the desired electromagnetic wave shielding performance of the framework of electronic equipment descends.The thickness of resin involucra is also different according to the kind of employed substrate resin and sheet metal, the roughness of sheet metal etc., be difficult to carry out determine uniquely, but more preferably roughly below 2.0 μ m more than the 0.2 μ m, further preferably below 1.5 μ m more than the 0.3 μ m.
The thickness of resin involucra can be measured by the method that proportion converts according to epithelium weight, perhaps also can carry out microscopic examination (observation of SEM photo) and measures the cross section of resin involucra.
The back side at least (observing the inboard of the non-outside (extraneous gas side) from the framework of electronic equipment) that resin involucra is formed on sheet metal gets final product.This is because electromagnetic wave shielding performance can have problems in the inboard of electronic equipment member.Certainly, also can be formed on the table dorsal part of sheet metal.
Resin involucra can also contain known adjuvant (for example, rust preventive, matting agent, pigment etc.) except that described substrate resin and crosslinking chemical.
Resin involucra can also contain Magnaglo (electro-magnetic wave absorption adjuvant), thus, can further improve electromagnetic wave shielding performance.As Magnaglo, can list representational soft magnetic ferrite powder and magnetic metallic powder etc.For example can enumerate soft magnetism Ni-Zn based ferrite powder and Mn-Zn based ferrite powder etc. as soft magnetic ferrite powder.In addition, for example can enumerate permalloy (Ni-Fe be in the alloy Ni content at the alloy more than 35%) and sendust (Sendust) (Si-Al-Fe is an alloy) etc. as magnetic metallic powder.They can use separately or and use.
The content of Magnaglo (total amount) is preferably roughly in the scope of 20～60 quality %.When content is lower than 20 quality %, can not bring into play above-mentioned effect effectively, on the other hand, when surpassing 60 quality %, the electronic equipment member has the tendency of deterioration with the desired characteristic of resin coated steel plates (bendability, connecting airtight property of epithelium and corrosion stability).The content of Magnaglo is for example also different according to the thickness of the kind of the Magnaglo that uses and shape, resin involucra etc., be difficult to determine uniquely, but more preferably roughly below 50 quality % more than the 25 quality %, more preferably below the above 45 quality % of 30 quality %.
The preferred mean grain size of above-mentioned Magnaglo is preferably removed the powder of big particle diameter (for example, more than the 20 μ m) as far as possible below 15 μ m.Thus, the formation of magnetic coating film becomes easily, can suppress processability, corrosion proof reduction.
At this, the mean grain size of above-mentioned Magnaglo is meant, decides the size-grade distribution of the magnetic powder particles after the classification by general size-grade distribution instrumentation, the granularity (D from the integrating value 50% of small particle diameter side that calculates according to its measurement result
50).This size-grade distribution can be measured by the diffraction that the magnetic powder particles irradiates light is produced and the intensity pattern of scattering, as this size-grade distribution meter for example illustration day マ イ Network ロ ト ラ Star Network (microtrac) 9220FRA of machine dress society system or マ イ Network ロ ト ラ Star Network HRA etc. are arranged.
Also have, the Magnaglo that satisfies above-mentioned preferred mean grain size also can use marketing.For example, can enumerate Ni-Zn is soft magnetic ferrite [field, family industry (strain) system BSN-125, mean grain size 13.0 μ m], permalloy (78%Ni) [Japanese ア ト マ イ ズ processing (strain) system SFR-PC78, mean grain size 5.7 μ m], permalloy (45%Ni) [Japanese ア ト マ イ ズ processing (strain) system SFR-PB45, mean grain size 5.8 μ m], sendust [Japanese ア ト マ イ ズ processing (strain) system SFR-FeSiAl (84.5-10-5.5), mean grain size 6.9 μ m] etc.
In order further to improve the electromagnetic wave shielding performance of resin-coated metal plate, also can in resin involucra, add the electric conductivity imparting agent.For example can enumerate the metallic compound of the metal monomer of Ag, Zn, Fe, Ni, Cu etc. or FeP etc. as the electric conductivity imparting agent.Wherein, particularly preferably be Ni.Also have, its shape is not particularly limited, but in order to obtain more excellent electric conductivity, for example recommends to use lepidiod structure.
The content of contained electric conductivity imparting agent preferably is roughly 20～40 quality % in the resin involucra.Strictly speaking, can suitably adjust its addition according to the kind of the Magnaglo that uses etc.For example, when using soft magnetic ferrite powder as Magnaglo, (for example more than the 25 quality %) add the electric conductivity imparting agent preferably as much as possible.In addition, when using magnetic metallic powder as Magnaglo, (for example 30 quality % are following) adds the electric conductivity imparting agent preferably as few as possible.
On the other hand, might bring harmful effect to processability etc. equally, then the total content of contained electric conductivity imparting agent and Magnaglo preferably roughly in the scope below 60 quality % in the magnetic coating film if consider electric conductivity imparting agent and above-mentioned Magnaglo.
Sheet metal is a purpose with the connecting airtight property that improves corrosion stability, raising and resin involucra etc., can implement that chromate is handled or surface treatment (substrate processing) such as parkerising.Perhaps, considering that environmental pollution etc. also can be used does not carry out the sheet metal that chromate is handled, and the sheet metal of having implemented any substrate processing all is contained in the scope of the present invention.
When carrying out above-mentioned substrate processing, consider electric conductivity etc., the adhesion amount of substrate processing preferably is roughly 300mg/m
2Below, 200mg/m more preferably
2Below, 150mg/m more preferably
2Below, most preferably be 100mg/m
2Below.
In addition, the method that non-chromate is handled is not particularly limited, and carries out normally used known substrate processing and gets final product.Specifically, recommend separately or and with the substrate processing of phosphate-based, silica-based, titanium system, zirconium system etc.
Also have, generally carry out non-chromate when handling, corrosion stability reduces, so be purpose to improve corrosion stability, in filming or during substrate processing, can use rust preventive.Can enumerate silicon dioxide based compound, phosphate-based compound, phosphite based compound, Quadrafos based compound, sulphur series organic compound, benzotriazole, tannic acid, molybdate series compound, tungstate based compound, vanadium sub-group compound, silane coupling agent etc. as above-mentioned rust preventive, can separately or and use them.Particularly preferably be silicon dioxide based compound (for example calcium ion-exchanged silicon dioxide etc.) and phosphate-based compound, phosphite based compound, Quadrafos based compound (for example aluminium triphosphate etc.) and usefulness, be recommended in quality ratio 0.5:9.5～9.5:0.5 (more preferably in the scope of 1:9～9:1) and with silicon dioxide based compound (phosphate-based compound, phosphite based compound or Quadrafos based compound).By being controlled at this scope, can guarantee the corrosion stability and the processability both sides that wish.
By the use of above-mentioned rust preventive, can guarantee the corrosion stability of non-chromate processing sheet metal, but opposite because the interpolation of rust preventive also causes processability to reduce.For this reason, as the formation composition of filming, special recommendation with epoxide modified polyester based resin and/or amphyl import skeleton polyester based resin, and crosslinking chemical (being preferably isocyanate is that resin and/or melamine are resin, more preferably both and with) be used in combination.
Wherein, the polyester based resin (for example, bisphenol-A being imported the polyester based resin etc. of skeleton) that epoxide modified polyester based resin and/or amphyl is imported skeleton is compared the corrosion stability and the connecting airtight property excellence of filming with polyester based resin.
On the other hand, isocyanate is that crosslinking chemical has the effect (be meant the effect that improves the outward appearance after processing, in embodiment described later, estimate with the crackle number in the connecting airtight property bending test) that improves processability, thus, also can guarantee excellent processability even added rust preventive.
In addition, melamine is that crosslinking chemical has excellent corrosion stability.Therefore, in the present invention, by with described rust preventive and usefulness, can access very good corrosion stability.
Can use these isocyanate separately is that crosslinking chemical and melamine are crosslinking chemical, but also the time spent can further be improved processability and the corrosion stability that non-chromate is handled sheet metal.Specifically, be resin with respect to the isocyanate of 100 mass parts, recommending ratio with 5～80 mass parts to contain melamine is resin.At melamine is resin when being lower than 5 mass parts, the corrosion stability that can not obtain wishing, and on the other hand, melamine is a resin when surpassing 80 mass parts, can not bring into play isocyanate well and be the effect that the interpolation of resin brings, the processability raising effect that can not obtain wishing.More preferably the isocyanate with respect to 100 mass parts is a resin, below 40 mass parts more than 10 mass parts, more preferably below above 30 mass parts of 15 mass parts.
Resin-coated metal plate of the present invention, on the sheet metal surface of (also comprising above-mentioned part of carrying out substrate processing), be covered and contained the resin involucra of above-mentioned various adjuvants, but as required, to give flaw resistance and anti-finger printing etc. is purpose, also can form two layers epithelium structure having implemented other resin involucra on the surface of resin involucra.
Then, the method for making resin coating film sheet metal of the present invention is described.
Resin-coated metal plate of the present invention outside substrate resin and crosslinking chemical, is coated on the surface of sheet metal with the coating that contains various adjuvants as required with known coating method, burns sticking and obtains.
At this, for the PPIt with resin involucra is controlled at scope of the present invention (more than 70), be preferably as follows the surfaceness (the arithmetic average roughness Ra of JIS B0601 (1994) defined is designated hereinafter simply as Ra) of the former material plate of control (sheet metal) and the formation method (the burning stick spare of the viscosity of coating and solid-state amount concentration, coating etc.) of resin involucra.
At first, the Ra as the sheet metal of former material plate preferably roughly is controlled in the scope of 0.8～1.6 μ m.For example, when using steel plate as former material plate, if the Ra of modified roll roughly is controlled in the scope of 0.6～3.2 μ m, the rolling rate when rolling roughly is controlled in 0.3～2.5% the scope, then the Ra of sheet metal can be controlled in the above-mentioned scope.In the skin-pass operation, the surface configuration that is used for the roller of skin-pass is transferred to the former material plate of plating with high transferring rate, but, as the present invention, when putting on extremely thin resin involucra on the former material plate of plating, the surface configuration of plated resin epithelium is considered to reflect substantially the surface configuration of former material plate, therefore, suitably control the Ra as the sheet metal of former material plate.Rolling rate is determined at suitable scope based on the Ra of modified roll and gets final product.
The Ra of modified roll for example can use known job operations such as shot-peening passivation processing, discharge passivation processing, laser passivation processing to carry out suitable adjusting.For example, use the shot-peening passivation to add man-hour, the surfaceness of using the grinding material of having adjusted granularity to adjust modified roll gets final product.
The viscosity of coating, preferably in Ford cup (ford cup) No.4 in 10 seconds～40 seconds scope, more preferably in 15～30 seconds scope.At this, mean that short more viscosity of time is low more.
For example, when the viscosity of employed coating was lower than 10 seconds in Ford cup No.4, coating was invaded the paddy portion (recess) of sheet metal easily, and therefore, the PPIt of resin involucra has the tendency of minimizing.On the other hand, when the viscosity of employed coating surpassed 40 seconds in Ford cup No.4, the surfaceness of sheet metal (concavo-convex shape) can be brought very big influence to the formation of resin involucra, and the electric conductivity under the light contact might become unstable.
The solid-state amount concentration of coating is suitably adjusted to according to the viscosity of employed coating and coating condition etc. and is easy to coating and gets final product, but it is roughly preferred in the scope of 2～20 quality %, more preferably in the scope of 4～16 quality %, further preferred in the scope of 6～12 quality %.
Burn solvent types that stick spare for example considers that dilution is used according to coating etc. and flow into the degree variation etc. of the paddy portion (recess) of sheet metals, preferably roughly burnt sticking with interior end at 1 minute.
Coating method is not particularly limited, for example can enumerate the clean surface, (for example implementing the coating pre-treatment according to necessity, parkerising, chromate processing etc.) long chi surfaces of metallic strip on use rolling method, gunite, the curtain coating coating compositions such as (curtain flow) Tu Fa that flow, make it carry out dry method etc. by hot-air drying stove.Take all factors into consideration by rolling method preferably in practicality such as the homogeneity of film thickness and processing cost, surface covered etc.
As the electronic equipment member that is suitable for resin-coated metal plate of the present invention, for example be the electronic equipment member at enclosure space built-in heating body, this electronic equipment member also comprises all or part of electronic equipment member that is made of with applicator above-mentioned electronic equipment member of its outer wall.As above-mentioned electronic equipment member, information record goods such as CD, LD, DVD, CD-ROM, CD-RAM, PDP, LCD have been enumerated, personal computer, auto-navigation system, vehicle-mounted AV etc. are electric, electronics, communication correlated product, AV equipment such as projector, televisor, video recorder, game machine, copier such as duplicating machine, printer, the power pack cover of air-conditioner outdoor unit etc., control enclosure cover, automatic vending machine, refrigerator etc.
[embodiment]
Below, enumerate embodiment and be described more specifically the present invention, but the present invention is not limited by following embodiment certainly, can carry out suitable change in the scope of described main idea before and after meet and implement, these all are contained in the technical scope of the present invention.
Embodiment 1
(sheet metal)
Use the various sheet metals (thickness of slab all is 0.6mm) of following expression, the surfaceness (Ra) of modified roll is changed in the scope of 0.6～3.2 μ m, and the rolling rate when rolling is changed in 0.3～1.5% scope, thus, the surfaceness (Ra) of sheet metal is changed in the scope of 0.56～1.35 μ m.By grit size is changed in the scope of #50～#70, use the grinding material of having adjusted granularity to carry out shot-peening passivation processing, the Ra of modified roll is changed.
In following record, " % " is not particularly limited is the meaning of quality %.In addition, coated steel sheet (EG, GI, GA, ZN, ZF) has all carried out the two sides plating.
EG (1): plated steel sheet
(single face plating adhesion amount 20g/m
2, Ra:0.76 μ m)
EG (2): plated steel sheet
(single face plating adhesion amount 15g/m
2, Ra:0.78 μ m)
EG (3): plated steel sheet
(single face plating adhesion amount 12g/m
2, Ra:0.75 μ m)
EG (4): plated steel sheet
(single face plating adhesion amount 9g/m
2, Ra:0.80 μ m)
EG (5): plated steel sheet
(single face plating adhesion amount 6g/m
2, Ra:0.76 μ m)
EG (6): plated steel sheet
(single face plating adhesion amount 3g/m
2, Ra:0.77 μ m)
GI: hot-dip galvanized steel sheet
(single face plating adhesion amount 60g/m
2, Ra:0.56 μ m)
CR: cold-rolled steel sheet (Ra:0.86 μ m)
GA (1): alloy galvanized steel plate
(single face plating adhesion amount 40g/m
2, Fe:10%, Ra:1.34 μ m)
GA (2): alloy galvanized steel plate
(single face plating adhesion amount 40g/m
2, Fe:10%, Ra:0.82 μ m)
GA (3): alloy galvanized steel plate
(single face plating adhesion amount 35g/m
2, Fe:10%, Ra:1.32 μ m)
GA (4): alloy galvanized steel plate
(single face plating adhesion amount 30g/m
2, Fe:10%, Ra:1.35 μ m)
GA (5): alloy galvanized steel plate
(single face plating adhesion amount 25g/m
2, Fe:10%, Ra:1.30 μ m)
ZN:Zn-Ni alloying electroplating steel plate
(single face plating adhesion amount 20g/m
2, Ni:10%, Ra:0.83 μ m)
ZF:Zn-Fe alloying electroplating steel plate
(single face plating adhesion amount 20g/m
2, Fe:10%, Ra:0.81 μ m)
(modulation of resin involucra)
Preparation contains the various coating of composition shown in the table 1, on sheet metal, carried out bar shaped film (barcoat) coating.Used the mixed solvent (1:1) of dimethylbenzene and cyclohexanone as thinning agent.Solid-state amount concentration and bar shaped the film number of the bar shaped in coating used of the thickness of resin involucra by changing dilution coating, and it is changed in the scope of 0.3～2.4 μ m.
After being coated with above-mentioned coating, under following condition, carried out burning sticking.
The passing through the time of hot-air drying stove (in-furnace time): 50 seconds
The arrival plate temperature of hot-air drying stove: 230 ℃
(evaluation of resin involucra)
(mensuration of Tg)
The Tg of resin involucra measures with differential scanning calorimetry (trade name: Thermo Plus DSC8230, (strain) リ ガ Network system) based on JISK7121.Specifically, the resin involucra that will obtain from the resin-coated metal plate of making as mentioned above places differential scanning calorimetry, is cooled to-100 ℃, after stablizing, be warming up to 180 ℃ with 20 ℃/minute speed, obtain glass transformation temperature (Tg) from the DSC curve of gained then.
(mensuration of PPIt)
For PPIt, in the SAEJ911-JUN86 (1986) of the U.S. among normalized PPI, be altitude datum with the average thickness (μ m) of resin involucra, calculated the PPIt of resin-coated metal plate.
Condition determination is cutoff: 0.8mm, contact pilotage front-end radius R:2 μ m (partly regarding contact pilotage as ball), measured length: 25.4mm.In fact, the consideration error at measurment (± 0.4mm), transversal contact pilotage in the scope of 26.2mm.In addition, locate and select arbitrarily 10 positions, with its mean value as PPIt.Locating adds up to 5 positions of selection in same direction, adds up in the direction vertical with this direction and selects 5 positions.
The average thickness of resin involucra is obtained with the method shown in following.At first, the weight rate with 1～10 weight % adds monox (SiO in coating
2) serve as a mark (marker), measured the Si adhesion amount by fluorescent x-ary analysis.When measuring the Si adhesion amount, make the inspection amount line of the relation of expression Si amount and fluorescent X-ray intensity in advance, based on this inspection amount line, measured the Si adhesion amount.
Then, as mentioned above,, carry out the proportion conversion and calculate the weight of resin involucra, obtained average thickness t (μ m) according to the Si adhesion amount of measuring.Concrete conversion method is as described below.
The average thickness t of resin involucra (μ m)=A/ (B * C * D) } * 1000
In the formula,
A=Si adhesion amount (mg/m
2)
B＝28/60(Si/SiO
2)
C=SiO
2Weight rate
Proportion (the g/cm of D=resin involucra
3)
The average thickness (t) of the resin involucra that obtains as mentioned above as positive and negative datum-plane (peak counting level) separately, is measured the peak valley number that surpasses leather film thickness t of each inch existence, thereby obtained PPIt.
(evaluation of electric conductivity)
Use test device [(strain) カ ス タ system system マ Le チ テ ス タ-CX-250], the following resistance of having measured the surface of resin-coated metal plate.
As shown in Figure 5, terminal is kept 45 ° angle, the average velocity of while with 30mm/ second makes its surface slip (measured length 100mm) at resin-coated metal plate.Pressure during mensuration is to carry out under the light contact of the deadweight that terminal is only arranged (7g).Begin through more than 1 second from mensuration, read measured value after measured value (resistance value) is stable.
Conversion locates and adds up to 20 operations same as described above, with its mean value as resistance value.
In the present embodiment, be evaluated as excellent electric conductivity (qualified) with what the resistance value that obtains as mentioned above was lower than 100 Ω, resistance value is evaluated as poorly conductive (defective) more than 100 Ω.Resistance value is big more, and electric conductivity is poor more.
Also have, the evaluation method of present embodiment, the pressure when resistance value is measured is in 10～12g/mm
2Scope in and estimate electric conductivity aspect under light the contact, open 2004-No. 156081 communiques, spies with described spy and open 2005-No. 238535 communiques, spies to open the electric conductivity evaluation method of putting down in writing in 2004-No. 277876 communiques different.In these documents, all be to use the ロ レ ス タ AP of Mitsubishi's oiling (strain) system or GP as the surface resistance analyzer, use ASP or LSP probe to estimate electric conductivity as measuring probe, calculate the pressure of the probe when measuring, be roughly 33～460g/mm
2, compare very high with present embodiment.
(evaluation of electromagnetic wave absorbability)
Fig. 2 is the figure that the method that the electromagnetic wave absorbability of resin-coated metal plate is estimated is described.As shown in Figure 2, in the framework 1 of rectangular shape, be provided with high frequency tours antenna 5, magnetic field in conjunction with and constitute.High frequency tours antenna 5 is connected an end of concentric cable 6 via connector (not shown), and the other end of concentric cable 6 is connected with network analyser 7.In network analyser 7, on one side inswept frequency generate electromagnetic waves on one side, via (high frequency incoming wave: arrow B) in concentric cable 6, the high frequency tours antenna 5 input frameworks 1.In the resonant frequency of framework 1, because therefore the electromagnetic wave of savings input can observe the characteristic (with reference to Fig. 3) that volume reflection reduces.So the high frequency reflection wave of being represented by arrow C is as observed value fan-in network analyzer 7 (high frequency reflection waves: arrow C).
At this moment, if the Q value of obtaining by following formula (2) in the instrumentation framework 1, the then size of the energy of savings in the framework 1 as can be known.Also have, the Q value of obtaining from following formula (2) be the value calculated of the difference on the frequency Δ f that obtains from the condition that satisfies according to the admittance track and resonant frequency fr (for example, middle island is published the gloomy north of light work " gloomy NORTEL engineering series 3 microwaves engineering-basis and principle-" Co., Ltd. and is issued the 159th～163 page).
Q value=fr/ Δ f (2)
This expression is few more from the energy of the more little framework 1 interior savings of Q value that following formula (2) is obtained.Therefore, the Q value is more little, and is also more little to the electromagnetic field energy level of internal reflection from framework 1.
Be illustrated among Fig. 4 to the situation pattern of this moment, the figure shows so-called Ez=0, TE
011The electromagnetic field of resonance mode of low-limit frequency distribute, among the figure, E is a high frequency magnetic field, F is a high-frequency electric field.Above-mentioned Ez is the meaning of the electric field intensity of z direction, TE
011The attitude that the electromagnetic field of expression resonance mode distributes.This TE means at the z direction wave and advances that laterally there is electric field in it.There is an electric-field intensity distribution in add-word " 011 " expression with respect to x, y, z direction on y and z direction, electric-field intensity distribution does not change (for example, with reference to the 141st～144 page in above-mentioned document) on the x direction.
In addition, electromagnetic field distribution shown in Figure 4 is represented with following formula.
H
z＝H
011·cos(k
y·y)·sin(k
z·z)
H
y＝(—k
z·k
y/k
c 2)·H
011·sin(k
y·y)·cos(k
z·z)
E
x＝(—jωμk
y/k
c 2)·H
011·sin(k
y·y)·sin(k
z·z)
At this, k
y=π/b, k
z=π/c, k
c=k
yB, c are the y of the rectangular parallelepiped (framework 1) of Fig. 4, the length of z direction, and j is an imaginary number, and ω is each frequency, and μ is the magnetoconductivity of air.
Present inventors have made and the ratio of the shared inner face of sample steel plate can have been brought up near 100% the framework of the whole face of framework inner face (that is, up to).Fig. 6 is the key diagram that expression constitutes the SUS system framework (support body) of this framework, and Fig. 6 (a) is a vertical view, and Fig. 6 (b) is a front view, and Fig. 6 (c) is a left view.Also have, this framework constitutes symmetry up and down, and therefore, upward view, rear view, right view show equally with vertical view (Fig. 6 (a)), front view (Fig. 6 (b)), left view (Fig. 6 (c)) respectively.
On framework shown in Figure 6, attach sample steel plate shown in (mounting screw) Fig. 7,8 and SUS plate and form framework (240 * 180 * 90mm).Also have, Fig. 7 (a) is disposed at the front of framework, the sample steel plate of back portion (2), Fig. 7 (b) is the sample steel plate (2) that is disposed at the left and right side part of framework, and Fig. 8 (a) is the SUS plate that is disposed at upper part, and Fig. 8 (b) is the SUS plate that is disposed at bottom surface portions.
According to aforesaid formation, if make framework, then sample steel plate can account for its inner face up near 100% ratio.In addition, mounting screw its spacing is made as 20～40mm, has reduced contact resistance, therefore, needs a plurality of stop screws.Stop screw can improve the repeatability of Q pH-value determination pH by the management torque.Use this framework to measure Q value (described Fig. 2), and calculated electromagnetic wave absorbability by following formula.
The electromagnetic wave absorbability of sample steel plate (dB)=10 * log
10([EG]/[A])
Wherein, [EG]: the Q value that becomes the plated steel sheet of substrate
[A]: the Q value of sample steel plate
It is high more to be evaluated as the value of being calculated by said method (dB), and electromagnetic wave absorbability is excellent more.In the present embodiment, the value of calculating as mentioned above is evaluated as excellent electromagnetic wave absorption performance (qualified) more than 3.0dB, and what be lower than 3.0dB is evaluated as electromagnetic wave absorbability poor (defective).It is excellent more to be evaluated as the big more electromagnetic wave absorbability of the above-mentioned value of calculating.
These results are recorded in table 2 and the table 3 in the lump.
Also have, in table 2 and table 3, be provided with the comprehensive evaluation hurdle, carried out comprehensive evaluation by following benchmark.Comprehensive evaluation be ◎ or.Be " example of the present invention ".
◎: electric conductivity and electromagnetic wave absorbability both sides are qualified
O: the qualified electromagnetic wave absorbability of electric conductivity is defective
*: the defective electromagnetic wave absorbability of electric conductivity is qualified, or electric conductivity and electromagnetic wave absorbability both sides are defective
[table 2]
[table 3]
Can carry out following investigation from these results.
At first, to used the result (No.1 of table 2～32) of alloy galvanized steel plate to investigate as the former material plate of plating.In the present embodiment, use the different 5 kinds of former material plates of total (GA (1)～GA (5)) of plating adhesion amount to estimate electric conductivity and electromagnetic wave absorbability.
Wherein, alloy galvanized steel plate (plating adhesion amount 40g/m has been used as the former material plate of plating in No.1～16th
2, Fe:10%) example.They have all used alloy galvanized steel plate, therefore can access good electromagnetic wave absorbability.
As shown in Table 2, No.1～7,9～16 that PPIt is controlled at more than 70 are compared with the No.8 of the discontented unabridged version scope of invention of PPIt, and electric conductivity is all excellent.In detail, PPIT is big more, and resistance value basically is more little, and electric conductivity has the tendency of raising.
In addition, when the relation of the Tg of resin involucra and resistance value is investigated, as described below.
At first, be that the situation of 1.9 μ m is investigated to the average thickness of resin involucra.The PPIt of No.7 (Tg=40 ℃), No.9 (Tg=10 ℃), No.10 (Tg=25 ℃), No.11 (Tg=60 ℃), No.12 (Tg=75 ℃) is about 78～83, be set near the lower limit given to this invention (70), but, during their resistance value of comparative studies as seen, Tg is low more, and resistance value basically is also more little, and electric conductivity has the tendency of raising.
Same tendency also can be seen when the average thickness of resin involucra is 1.0 μ m.The PPIt of No.4 (Tg=40 ℃), No.13 (Tg=10 ℃), No.14 (Tg=25 ℃), No.15 (Tg=60 ℃), No.16 (Tg=75 ℃) is about 179～185, be controlled in the scope given to this invention (PPIt 〉=70), but during their resistance value of comparative studies as seen, Tg is low more, and resistance value basically is also more little, and electric conductivity has the tendency of raising.
In that former material plate has used in the example (No.17～29) of the plating adhesion amount GA (2) different with described GA (1) as plating, seen too and above-mentioned same tendency.
In addition, as No.30～32 that the former material plate of plating has used the different GA (3) of plating adhesion amount～GA (5), PPIt satisfies scope of the present invention, therefore, can guarantee good electrical conductivity.Because they use alloy galvanized steel plate, so electromagnetic wave absorbability is also excellent.
On the other hand, the No.49 of table 3 and 50 is the examples that used the alloy plating steel plate of zinc beyond above-mentioned and iron family element as the former material plate of plating.In detail, No.49 has been to use the example that makes the steel plate of Zn and Ni alloying by electrochemical plating, No.50 has been to use the example that makes the steel plate of Zn and Fe alloying by electrochemical plating, but their PPIt all satisfies scope of the present invention, therefore can guarantee good electrical conductivity, and electromagnetic wave absorbability is also excellent.
On the other hand, the example of plated steel sheet has been used in the No.33 of table 3～48th as the former material plate of plating.In the present embodiment, use the different 6 kinds of former material plates of total (EG (1)～EG (6)) of plating adhesion amount that electric conductivity and electromagnetic wave absorbability are estimated.
As shown in table 3, the PPIt of above-mentioned steel plate all is controlled at more than 70, therefore, and excellent electric conductivity.In detail as seen, PPIt is big more, and resistance value basically is more little, and electric conductivity has the tendency of raising.
Relative therewith, electric conductivity inequality (showing in the table) when confirming the former material plate of any plating of use of the discontented unabridged version invention scope of PPIt by experiment.
In addition, when investigating the concerning of the Tg of resin involucra and resistance value, as described below.
At first, be that the situation of 1.0 μ m is investigated to the average thickness of resin involucra.The PPIt of the No.35 of table 3 (Tg=40 ℃), No.36 (Tg=10 ℃), No.37 (Tg=25 ℃), No.38 (Tg=60 ℃), No.39 (Tg=75 ℃) all is approximately 71～76, be set near the lower limit given to this invention (PPIt=70), but during their resistance value of comparative studies as seen, Tg is low more, and resistance value basically is also more little, and electric conductivity has the tendency of raising.
When being 0.6 μ m, the average thickness of resin involucra also seen same tendency.The PPIt of No.33 (Tg=40 ℃), No.40 (Tg=10 ℃), No.41 (Tg=25 ℃), No.42 (Tg=60 ℃), No.43 (Tg=75 ℃) all is approximately 142～153, be controlled in the scope given to this invention (PPIt 〉=70), but during their resistance value of comparative studies as seen, Tg is low more, and resistance value basically is also more little, and electric conductivity has the tendency of raising.
The example of hot-dip galvanized steel sheet has been used in the No.51 of table 3～56th as the former material plate of plating.
Wherein, the PPIt No.51,53～56 that satisfies scope of the present invention compares excellent electric conductivity with the No.52 of discontented unabridged version scope of invention.
Also have, above-mentioned steel plate has all used hot-dip galvanized steel sheet, so electromagnetic wave absorbability is poor.
The example of cold-rolled steel sheet has been used in the No.57 of table 3～67th as the former material plate of plating.
Wherein, excellent electric conductivity is compared with the No.59 of discontented unabridged version scope of invention in PPIt No.57～58,60～67 of satisfying scope of the present invention.
In addition, above-mentioned steel plate has all used cold-rolled steel sheet, therefore, compares with the situation of having used the alloying coated steel sheet, can access good electromagnetic wave absorbability.
Claims (4)
1. resin-coated metal plate, it forms at metal sheet surface coated with resin epithelium, it is characterized in that,
As the arithmetic average roughness Ra of the sheet metal of former material plate in the scope of 0.8～1.6 μ m, and,
Described resin involucra satisfies the necessary condition of following formula (1),
PPIt≥70……(1)
PPIt represents the concavo-convex extraction curve that is made as with resin involucra, from this average line of extracting curve out respectively to the certain datum-plane t of two direction settings of (+) negative (-) just, when being designated as 1 counting in the time of will and surpassing positive datum-plane+t above negative datum-plane-t, per 1 inch count number, at this, t represents the thickness of resin involucra.
2. resin-coated metal plate according to claim 1 is characterized in that,
The glass transition point Tg of described resin involucra is below 60 ℃.
3. resin-coated metal plate according to claim 1 is characterized in that,
Described sheet metal is the alloy plating steel plate of zinc and iron family element.
4. according to each described resin-coated metal plate in the claim 1～3, it is characterized in that,
Described sheet metal is an alloy galvanized steel plate.
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|---|---|---|---|
| JP2006165389A JP4773278B2 (en) | 2006-06-14 | 2006-06-14 | Resin-coated metal plate with excellent electromagnetic shielding properties |
| JP2006-165389 | 2006-06-14 | ||
| JP2006165389 | 2006-06-14 |
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| JP (1) | JP4773278B2 (en) |
| KR (2) | KR20070119541A (en) |
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| JP5042555B2 (en) * | 2006-08-03 | 2012-10-03 | 新日本製鐵株式会社 | Zinc-based plated steel sheet having a thin film primary anticorrosive coating layer with excellent surface conductivity and method for producing the same |
| BRPI0822369B1 (en) | 2008-02-15 | 2020-05-12 | Nippon Steel Corporation | Zinc-coated steel sheet having a thin film layer that prevents corrosion and its production method |
| JP4980268B2 (en) * | 2008-02-28 | 2012-07-18 | 株式会社神戸製鋼所 | Resin-coated steel sheet with excellent scratch resistance |
| JP5309699B2 (en) * | 2008-06-02 | 2013-10-09 | 新日鐵住金株式会社 | Surface-treated metal plate, metal housing, metal cover, and electrical and electronic equipment |
| JP5400455B2 (en) * | 2009-04-14 | 2014-01-29 | 株式会社神戸製鋼所 | Resin-coated galvanized steel sheet with excellent spot weldability |
| CN102146213B (en) * | 2010-05-21 | 2013-03-20 | 张家港市义立电子制造有限责任公司 | High magnetic conduction additive beneficial for environment protection and recycling and preparation method thereof |
| CN101867077B (en) * | 2010-06-22 | 2013-01-02 | 成都八九九科技有限公司 | Coaxial medium-powder load absorber and preparation method thereof |
| WO2012043868A1 (en) * | 2010-09-29 | 2012-04-05 | Ｊｆｅスチール株式会社 | Galvanized steel sheet |
| JP5867862B2 (en) * | 2012-03-30 | 2016-02-24 | 株式会社神戸製鋼所 | Resin-coated metal plate with excellent electromagnetic shielding and electrical conductivity |
| CN103895289A (en) * | 2013-12-24 | 2014-07-02 | 烨辉（中国）科技材料有限公司 | High-conductivity galvanized steel sheet |
| CN108873116A (en) * | 2018-06-29 | 2018-11-23 | 信利光电股份有限公司 | A method of improving anti-dazzle cover board display effect |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000248373A (en) * | 1999-02-26 | 2000-09-12 | Nkk Corp | Laminated steel sheet for non-polished welded can |
| JP2000325873A (en) * | 1999-05-24 | 2000-11-28 | Kobe Steel Ltd | Surface treated metallic plate having metallic tone appearance |
| JP2003183801A (en) * | 2001-12-20 | 2003-07-03 | Jfe Steel Kk | Galvannealed steel sheet and manufacturing method therefor |
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| JP3068998B2 (en) * | 1994-03-28 | 2000-07-24 | 新日本製鐵株式会社 | Pre-coated steel sheet with excellent backside grounding |
| JPH1016128A (en) * | 1996-06-28 | 1998-01-20 | Nippon Steel Corp | Surface treated metal plate of superior resistance to fingerprint and grounding properties |
| JP2004156081A (en) * | 2002-11-05 | 2004-06-03 | Jfe Steel Kk | Surface treated steel sheet superior in electromagnetic wave shielding property and corrosion resistance, and manufacturing method therefor |
| JP4601268B2 (en) * | 2003-01-21 | 2010-12-22 | Ｊｆｅスチール株式会社 | Surface-treated galvanized steel sheet |
| JP4349149B2 (en) * | 2004-02-25 | 2009-10-21 | Ｊｆｅスチール株式会社 | Method for producing surface-treated steel sheet having excellent conductivity |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000248373A (en) * | 1999-02-26 | 2000-09-12 | Nkk Corp | Laminated steel sheet for non-polished welded can |
| JP2000325873A (en) * | 1999-05-24 | 2000-11-28 | Kobe Steel Ltd | Surface treated metallic plate having metallic tone appearance |
| JP2003183801A (en) * | 2001-12-20 | 2003-07-03 | Jfe Steel Kk | Galvannealed steel sheet and manufacturing method therefor |
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| JP4773278B2 (en) | 2011-09-14 |
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| CN101090005A (en) | 2007-12-19 |
| KR20070119541A (en) | 2007-12-20 |
| KR20090058495A (en) | 2009-06-09 |
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| TWI347886B (en) | 2011-09-01 |
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