CN101314680A - Electrically-conducting paint, preparation method and uses thereof - Google Patents
Electrically-conducting paint, preparation method and uses thereof Download PDFInfo
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- CN101314680A CN101314680A CNA2007100746534A CN200710074653A CN101314680A CN 101314680 A CN101314680 A CN 101314680A CN A2007100746534 A CNA2007100746534 A CN A2007100746534A CN 200710074653 A CN200710074653 A CN 200710074653A CN 101314680 A CN101314680 A CN 101314680A
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Abstract
The invention discloses a conductive coating and the preparation method thereof and a method for forming film on material surface. The preparation method comprises the following steps: wetting and dispersing metal powder; uniformly mixing film-forming resin, chloride-vinyl acetate resin and conductive coating additive, adding diluting agent, stirring at high speed, dispersing to form a conductive paint base material, adding into the wetted and dispersed metal powder, and uniformly stirring; and sieving, removing impurities to obtain conductive coating, adding curing agent, and spraying or applying on material. The conductive coating has the advantages of smooth surface and high adhesion of film-forming substance, and good conductivity, and can be adhered on the surface of any materials.
Description
Technical field
The present invention relates to a kind of electrically conducting coating, be specifically related to a kind of electrically conducting coating that can shield electromagnetic action, the invention still further relates to the preparation method of this electrically conducting coating and utilize the method for this electrically conducting coating at the material surface filming.
Background technology
Along with the development of IT industry, communication equipment occupies important status in modern life, mobile phone, and MP3, modernized product such as MP4 has become indispensable communication in the life, amusement equipment.The raising of human consumer's consciousness is more and more stricter for the requirement of product performance, outward appearance and function aspects.Electromagnetic interference also becomes a serious day by day problem simultaneously, need reduce harm by using the material that can eliminate or weaken electromagnetic interference near interfering source or the responsive source.
In the IT industry, the appearance requirement of product makes product with various material productions, also more increases for the material requirements of electromagnetic shielding like this.So at mobile phone, MP3, in the IT industries such as MP4, the electrically conducting coating electromagnetic shielding obtains a large amount of uses, plays inner each part of shielding and outside to inside, inner electromagnetic interference to human body by the inner casing conductive coating spray.
Except in IT industry, in building trade, every field such as carrier and military affairs have obtained effective application, and reach other good performances at increasing utilization of present stage metal, therefore, can be just more important attached to the electrically conducting coating on the metal.
The action principle of electrically conducting coating is: by the coating of resin to metal-powder, make its arrangement tight and orderly in filmogen, form the path that can conduct electricity, thereby reach the effect that electric current is passed through smoothly.Having under the situation of electromagnetic interference simultaneously, can propagate, thereby playing the effect of electromagnetic shielding by the mode of conduction.The size of electrically conducting coating resistance depends primarily on the arrangement of metal-powder in filmogen, and electrically conducting coating is for the sticking power of material, mainly be resin for the attached degree of the bag of metal-powder, so just depend on that resin choice and production technique select.
Present some manufacturer production analogous products, but there are following several big shortcomings in this series products: (1) filmogen surface irregularity is smooth inadequately; (2) electrically conducting coating is not for any material surface sticking power to be arranged, especially metallic surface (polishing stainless steel, aluminum magnesium alloy, and the metallic surface of passing through chemistry or physics mode processing).
Publication number is that CN1390894A discloses a kind of electrically conductive paint for internal surface of battery shell and preparation method thereof, described electrically conductive paint for internal surface of battery shell parts by weight are composed as follows: resin 10-20, conducting powder 30-50, organic solvent 30-60, described resin be urethane resin, acrylic resin, Resins, epoxy one or more; Its preparation method is first with urethane resin and dispersant, adds organic solvent and conducting powder, adds conductive auxiliary agent at last; Its defective is: the add-on of conductive powder is many, and the cost height is bad for the wettability of conductive powder earlier with resin and dispersant among the preparation method, will cause dispersed bad.Thereby have influence on conductivity.Because the general coating of metal material is difficult to be attached to the top, this patent does not have very clear and definite explanation whether can be attached to the metallic surface.
Summary of the invention
The object of the present invention is to provide a kind of filmogen smooth surface, strong adhesion and can be attached to any material surface, electrically conducting coating with excellent conducting performance.
Another object of the present invention provides the preparation method of above-mentioned electrically conducting coating.
A further object of the present invention provides the method for above-mentioned electrically conducting coating at the material surface filming.
For achieving the above object, the present inventor has carried out a series of research and has paid performing creative labour, has obtained unexpected effect.Electrically conducting coating provided by the invention comprises following component by weight percentage:
Metal-powder 20-40% film-forming resin 10-20% sticking power promotes resin 1-10%
Electrically conducting coating auxiliary agent 1-5% thinner 40-60% metal aligns promotor 0.5-5%.
Described metal-powder is silver powder and/or copper powder, and described metal-powder is sheet, flakey, spherical or its mixture; The granularity of metal-powder is the 1-10 micron, is preferably the 3-5 micron.
Described film-forming resin is a kind of or wherein several mixture in thermosetting acrylic resin, Hydroxylated acrylic resin, bisphenol A epoxide resin, polyester polyol resin, urethane resin or the vibrin.
Described sticking power promotes that resin is a vinyl chloride-vinyl acetate resin.
Described electrically conducting coating auxiliary agent is a kind of or its mixture in coupling agent, anti-settling agent or the wetting dispersing auxiliary.
Described coupling agent is titanate coupling agent and/or silane coupling agent.
Described titanate coupling agent is tetra-sodium type monoalkoxy class titanic acid ester or compound monoalkoxy class titanic acid ester; Described silane coupling agent is to be a kind of or wherein several mixture in modified amido silane coupling agent, peroxy silane coupling agent or the azido-silane coupling agent.
Described anti-settling agent is organic boron-moisten soil, aerosil or polyamide-based.
Described thinner is a kind of or wherein several mixture in hexone MIBK, ethyl acetate, butylacetate, toluene, dimethylbenzene or the pimelinketone.
A kind of method for preparing described electrically conducting coating comprises the steps:
(1) metal-powder is placed in the vessel, adds the part thinner, seal, place 20-40min, make its wetting dispersion;
(2) film-forming resin, vinyl chloride-vinyl acetate resin and electrically conducting coating auxiliary agent are mixed;
(3) mixture and the mixing diluents that step (2) is made, dispersed with stirring forms the electric conduction paint base-material;
(4) the electric conduction paint base-material that makes in the step (3) is joined in the wetting scattered metal-powder, stir;
(5) cross 100-300 purpose sieve, remove impurity, obtain electrically conducting coating.
Dispersed with stirring in the described step (3) is the rotating speed stirring 20-40mim with 900-3000 rev/min, and rotating speed is preferably 900-1100 rev/min.
A kind of described electrically conducting coating adds solidifying agent in the method for material surface filming in electrically conducting coating, spraying or brushing are toasted 20-40min, promptly on material.
Described material is plastic cement, glass, polishing stainless steel, aluminum magnesium alloy and passes through chemistry or the metallic surface of physics mode processing.
Described solidifying agent is tripolymer isocyanic ester or aromatic isocyanate, toasts under 60-80 ℃ of condition; Described solidifying agent is a masked isocyanate, toasts under 150-160 ℃ of condition.
Compared with prior art, the metal-powder content that electrically conducting coating provided by the invention uses is low, can reduce cost; In preparation process since metal-powder be not to disperse by high-speed stirring, but by in metal-powder, adding the part thinner, after placing 20-40min, make its wetting dispersion, avoided disperseing the destruction cause silver-bearing copper mealiness shape because of high-speed stirring, it is tightr that metal-powder is arranged in paint film, the apparent better effects if of the paint film of spraying; Promote resin owing to contain sticking power in the electrically conducting coating, strengthened the sticking power after the electrically conducting coating film forming greatly, make it not only can be attached to plastic material, and can be attached on the materials such as metal, glass.The metal-powder addition has remarkably influenced to the resistivity of paint film, increases with the metal-powder addition, and resistivity constantly descends, and when the metal-powder addition was controlled between the 20-40wt% of electrically conducting coating gross weight, the resistivity magnitude range of corresponding paint film was 10
-2-10 Ω cm, and can satisfy well attached to metal and glass.In practice, can control the resistivity of conducting coat as required by the addition of adjusting metal-powder, the present invention regulates the conductivity of filming by adding less metal-powder, makes it reach best effect; Sticking power promotes the add-on of resin to be controlled at the 1-10% of electrically conducting coating, in this scope, the sticking power of electrically conducting coating filmogen on general plastic material is very good, simultaneously at metallic substance (as aluminum magnesium alloy, polishing stainless steel and surface treated metal material etc.) and glass (as simple glass, synthetic glass etc.) have sticking power preferably on, can reach 0-1 level sticking power standard.Because metal-powder belongs to inorganic powder, itself and the sticking power of the formed paint film of resin on material are bad; In addition, because resin to the coating degree difference of metal-powder, so metal-powder is bad in the arrangement of paint film interior orientation, influences sticking power, hardness and the conductivity of paint film on material.The present invention by add coupling agent, metal aligns promotor and sticking power promotes resin, has improved aligning of metal-powder, and it is better contained mutually with resin, forms stable conductive network, simultaneously the sticking power between enhancing and the material.
Studies show that when the addition of coupling agent is the 1-3% of electrically conducting coating total amount, coating has good electrical conductivity; The coupling agent consumption was less than 1% o'clock, and metal-powder is bad with contacting of material, poor electric conductivity; When the coupling agent consumption greater than 3% the time, metal-powder mixed and disorderly arrangement in paint film hinders the formation of conductive channel and increases the particle gap, and resistivity is increased.
The electrically conducting coating of the present invention's preparation is under the ball falling impact effect, and paint film does not have obscission and illustrates that its sticking power is good; Circulation is 24 hours and 48 hours in the neutral salt spray test, and sticking power is constant, and resistivity is almost constant, illustrates that electrically conducting coating has good salt spray resistance; Under the effect of high low temperature circulation impact, resistivity and sticking power are almost constant, illustrate that electrically conducting coating has good electrical stability.Electrically conducting coating also has the following advantages:
Electrically conducting coating not only has good sticking power for general material, and good sticking power is also arranged on glass and metal, simultaneously, if metal substrate itself can conduct electricity, between electric conduction paint and the metal substrate conductivity can be arranged, and its acid and alkali-resistance, the ballistic excellent performance of temp. variation resistant antigravity; The used starting material wide material sources of electrically conducting coating are in liberal supply; The electrically conducting coating storage time is long, and paint film is weather-proof good, and conductive effect is lasting; Paint film is smooth smooth, and surface effect is good; The electrically conducting coating construction technology is simple, need not special processing and particular surroundings.
Embodiment
The present invention is described in further detail below by specific embodiment.
Metal-powder of the present invention is that silver powder, copper powder or the two mix, and particle diameter is 1-10 μ m, and it is shaped as sheet, granular or flakey, and resistivity is 1.62 * 10
-6-1.6 9 * 10
-6/ Ω .cm, its color and luster according to the difference that comprises the silver powder amount by light yellow to sorrel, the particle diameter of described metal-powder and the resistivity of itself are also influential for conductivity, particle diameter is more little, coating surface is smooth more smooth, shock-resistant ability is also good more, in the base-material storage process, can reduce the rate of descent of powder simultaneously.The manufacturer and the model of the silver-bearing copper powder among the embodiment: the YF-25 and the QF-30 of the rich science and technology of the prosperous Sheng in Shenzhen, and the yfs-2q5 of Guangzhou Yin Feng science and technology.
Vinyl chloride-vinyl acetate resin among the embodiment is that model is F-622,8246, and T-33, ternary vinyl chloride-vinyl acetate resins such as H15/45M all can be bought from market;
Anti-settling agent 6900 is polyamide waxes; Wetting dispersing agent EFKA4010 is a modified polyurethane, and wetting dispersing agent 963 is an electric neutrality poly carboxylic acid amide salt, all can buy from market;
Wetting dispersing agent EFKA-4010 and EFKENA-4070 are modified polyurethane; Wetting dispersing agent byk-110 is the copolymer solution that contains acidic-group, all can buy from market;
Metal among the embodiment aligns promotor (CAB resene) vinyl acetate between to for plastic Mierocrystalline cellulose, and model is CAB-381-2.0 or CAB-381-0.5, all can buy from market; Metal arrangements accelerant B YK-310 is a polyester modification polydimethylsiloxane solution; BYK-166 is the high molecular weight block copolymer that contains the pigment affinity groups, all can buy from market.
Embodiment 1
Electrically conducting coating: particle diameter is 8 μ m sheet silver-bearing copper metal-powder 25g, Hydroxylated acrylic resin 10g
Vinyl chloride-vinyl acetate resin F-622 5g, titanate coupling agent 1g, anti-settling agent 69001g, wetting dispersing agent EFKA-4010 1g, hexone MIBK 23g, ethyl acetate 30g, metal arrangements promotor (CAB resene) 4g;
The preparation method of electrically conducting coating and in the method for material surface filming:
(1) metal-powder is placed in the vessel, adds part thinner hexone MIBK 10g and ethyl acetate 10g, seal, place 30min, make its wetting dispersion;
(2) promote resin vinyl chloride-vinyl acetate resin F-622 and electrically conducting coating auxiliary agent titanate coupling agent tetra-sodium type monoalkoxy class titanic acid ester, anti-settling agent 6900, wetting dispersing agent EFKA-4010 to mix film-forming resin Hydroxylated acrylic resin, sticking power;
(3) mixture that step (2) is made and metal arrangements promotor (CAB resene) and remaining thinner hexone MIBK13g and ethyl acetate 20g mix, and stir 30mim with 1000 rev/mins rotating speeds, form the electric conduction paint base-material;
(4) the electric conduction paint base-material that makes in the step (3) is joined in the wetting scattered metal-powder, stir;
(5) cross 150 purpose sieves, remove impurity, obtain electrically conducting coating.
(6) in electrically conducting coating, add solidifying agent trimerization build isocyanic ester HDI 1.88g, brush on the aluminum magnesium alloy material,, promptly get the film of 15 micron thickness at 70 ℃ of condition baking 30min.
The addition of metal-powder is 25% of an electric conduction paint gross weight in the present embodiment, electrically conducting coating for sticking power be 0 grade, the resistivity of paint film is 0.41 Ω cm; Sticking power for material is 1 grade, and the resistivity of paint film is 0.48 Ω cm.
Embodiment 2
Electrically conducting coating: particle diameter is flakey copper metal powder end 22g, bisphenol A epoxide resin 8g, thermosetting acrylic resin 10g, vinyl chloride-vinyl acetate resin E15/45M 8g, titanate coupling agent 1.5g, wetting dispersing agent 963 1g, organic boron-moisten soil 1, butylacetate 20g, ethyl acetate 27g, the metal arrangements accelerant B YK-310 1.5g of 5 μ m;
The preparation method of electrically conducting coating and in the method for material surface filming:
(1) metal-powder is placed in the vessel, adds part thinner butylacetate 15g and ethyl acetate 5g, seal, place 20min, make its wetting dispersion;
(2) promote resin vinyl chloride-vinyl acetate resin E15/45M and the compound monoalkoxy class of electrically conducting coating auxiliary agent titanate coupling agent titanic acid ester, wetting dispersing agent 963 and the organic boron-moisten soil of anti-settling agent to mix film-forming resin bisphenol A epoxide resin and thermosetting acrylic resin, sticking power;
(3) mixture that step (2) is made mixes with metal arrangements accelerant B YK-310 and remaining thinner butylacetate 5g and ethyl acetate 22g, stirs 40mim with 900 rev/mins rotating speeds, forms the electric conduction paint base-material;
(4) the electric conduction paint base-material that makes in the step (3) is joined in the wetting scattered metal-powder, stir;
(5) cross 100 purpose sieves, remove impurity, obtain electrically conducting coating.
(6) in electrically conducting coating, add solidifying agent trimerization build isocyanic ester HDI 2.3g, be sprayed on metal and the glass material,, promptly get the film of 14 micron thickness at 60 ℃ of condition baking 40min.
The addition of metal-powder is 22% of an electric conduction paint total amount in the present embodiment, and this moment, paint film was 0 grade at last sticking power, and resistivity is 0.58-0.75 Ω cm.
Embodiment 3
Electrically conducting coating: particle diameter is spherical copper, silver-colored mixed metal powder 28.6g, polyester polyol resin 15g, vinyl chloride-vinyl acetate resin T-33 8g, silane coupling agent 0.5g, wetting dispersing agent EFKENA-4070 1.2, aerosil 1.4, pimelinketone 10g, ethyl acetate 20g, hexone 14.5g, metal arrangements promotor (CAB resene) 0.8g of 10 μ m;
(1) metal-powder is placed in the vessel, adds thinner pimelinketone 5g, ethyl acetate 15g and hexone 4g, seal, place 40min, make its wetting dispersion;
(2) promote resin vinyl chloride-vinyl acetate resin T-33 and the silane coupler modified amino silicane coupling agent of electrically conducting coating auxiliary agent, wetting dispersing agent EFKENA-4070 and anti-settling agent aerosil to mix film-forming resin polyester polyol resin, sticking power;
(3) mixture that step (2) is made and metal arrangements promotor (CAB resene) and thinner pimelinketone 5g, ethyl acetate 5g, hexone mixing 10.5g stir 20mim with 3000 rev/mins rotating speeds, form the electric conduction paint base-material;
(4) the electric conduction paint base-material that makes in the step (3) is joined in the wetting scattered metal-powder, stir;
(5) cross 300 purpose sieves, remove impurity, obtain electrically conducting coating.
(6) in electrically conducting coating, add solidifying agent masked isocyanate IPDI 2.4g, be sprayed on metal and glass and the plastic cement material,, promptly get the film of 17 micron thickness at 150 ℃ of condition baking 30min.
The addition of metal-powder is 28.6% of a filmogen in the present embodiment, and at glass, the sticking power on metal and the plastic cement is respectively 1 grade, and 1 grade and 0 grade, this moment, the resistivity of paint film was 0.24-0.35 Ω cm.
Embodiment 4
Electrically conducting coating: particle diameter is sheet silver metal powder 25g, thermosetting acrylic resin 15g, vinyl chloride-vinyl acetate resin H15/45M 9g, silane coupling agent 0.6g, wetting dispersing agent BYK-110 1g, anti-settling agent 6,900 1.2, hexone MIBK 10g, butylacetate 15g, ethyl acetate 19.2g, the metal arrangements accelerant B YK-166 4g of 3 μ m;
The preparation method of electrically conducting coating and in the method for material surface filming:
(1) metal-powder is placed in the vessel, adds thinner butylacetate 10g, ethyl acetate 10g, seal, place 25min, make its wetting dispersion;
(2) promote resin vinyl chloride-vinyl acetate resin H15/45M and electrically conducting coating auxiliary agent silane coupling agent peroxy silane coupling agent, anti-settling agent 6900 and wetting dispersing agent BYK-110 to mix film-forming resin thermosetting acrylic resin, sticking power;
(3) mixture that step (2) is made and metal arrangements accelerant B YK-166 and thinner hexone MIBK 10g, butylacetate 5g and ethyl acetate 9.2g mix, and stir 35mim with 2000 rev/mins rotating speeds, form the electric conduction paint base-material;
(4) the electric conduction paint base-material that makes in the step (3) is joined in the wetting scattered metal-powder, stir;
(5) cross 200 purpose sieves, remove impurity, obtain electrically conducting coating.
(6) in electrically conducting coating, add solidifying agent aromatic isocyanate 1.98g, be sprayed on metal and glass and the plastic cement material,, promptly get the film of 14 micron thickness at 80 ℃ of condition baking 28min.
The addition of metal-powder is 25% of an electric conduction paint total amount in the present embodiment, and paint film is to glass at this moment, and the sticking power of metal and plastic cement is 1 grade, and resistivity is 0.59-0.63 Ω cm.
Embodiment 5
Electrically conducting coating: A: particle diameter is spherical copper, silver-colored mixed metal powder 20g, urethane resin 12g, vinyl chloride-vinyl acetate resin H15/45M 10g, polyamide wax 0.3g, the silane coupling agent 0.3g of 1 μ m, wetting dispersing agent BYK-110 0.4g, thinner dimethylbenzene 60g, the directed accelerant B YK-166 of metal 5g;
The preparation method of electrically conducting coating and in the method for material surface filming:
(1) metal-powder is placed in the vessel, adds thinner dimethylbenzene 25g, seal, place 32min, make its wetting dispersion;
(2) promote resin vinyl chloride-vinyl acetate resin H15/45M and electrically conducting coating auxiliary agent silane coupling agent azido-silane coupling agent, anti-settling agent 6900 and wetting dispersing agent BYK-110 to mix film-forming resin urethane resin, sticking power;
(3) mixture that step (2) is made mixes with metal arrangements accelerant B YK-166 and thinner dimethylbenzene 35g, stirs 28mim with 1100 rev/mins rotating speeds, forms the electric conduction paint base-material;
(4) the electric conduction paint base-material that makes in the step (3) is joined in the wetting scattered metal-powder, stir;
(5) cross 250 purpose sieves, remove impurity, obtain electrically conducting coating.
(6) in electrically conducting coating, add solidifying agent masked isocyanate IPDI 1.4g, be sprayed on metal and glass and the plastic cement material,, promptly get the film of 12 micron thickness at 160 ℃ of condition baking 28min.
The addition of metal-powder is 20% of an electric conduction paint total amount in the present embodiment, and paint film is to glass at this moment, and the sticking power of metal and plastic cement is 0 grade, and resistivity is 0.59-0.63 Ω cm.
Embodiment 6
Electrically conducting coating: particle diameter is flakey silver metal powder 40g, vibrin 20g, vinyl chloride-vinyl acetate resin E15/45M 1g, aerosil 2g, titanate coupling agent 2g, wetting dispersing agent 963 1g, dimethylbenzene 20g, toluene 20g, the directed accelerant B YK-310 of the metal 0.5g of 5 μ m;
The preparation method of electrically conducting coating and in the method for material surface filming:
(1) metal-powder is placed in the vessel, adds thinner dimethylbenzene 15g, toluene 9g seals, and places 30min, makes its wetting dispersion;
(2) promote resin vinyl chloride-vinyl acetate resin H15/45M and electrically conducting coating auxiliary agent titanate coupling agent tetra-sodium type monoalkoxy class titanic acid ester 1g and compound monoalkoxy class titanic acid ester 1g, anti-settling agent aerosil and wetting dispersing agent BYK-110 to mix film-forming resin vibrin, sticking power;
(3) mixture that step (2) is made and metal arrangements accelerant B YK-166 and thinner dimethylbenzene 5g and toluene 11g mix, and stir 38mim with 2500 rev/mins rotating speeds, form the electric conduction paint base-material;
(4) the electric conduction paint base-material that makes in the step (3) is joined in the wetting scattered metal-powder, stir;
(5) cross 120 purpose sieves, remove impurity, obtain electrically conducting coating.
(6) in electrically conducting coating, add solidifying agent masked isocyanate IPDI 1.8g, be sprayed on metal and glass and the plastic cement material,, promptly get the film of 16 micron thickness at 155 ℃ of condition baking 32min.
The addition of metal-powder is 20% of an electric conduction paint total amount in the present embodiment, and paint film is to glass at this moment, and the sticking power of metal and plastic cement is 1 grade, and resistivity is 0.59-0.63 Ω cm.
Claims (16)
1, a kind of electrically conducting coating is characterized in that described electrically conducting coating comprises following component by weight percentage:
Metal-powder 20-40% film-forming resin 10-20% sticking power promotes resin 1-10%
Electrically conducting coating auxiliary agent 1-5% thinner 40-60% metal aligns promotor 0.5-5%.
2,, it is characterized in that described metal-powder is silver powder and/or copper powder according to the described electrically conducting coating of claim 1.
3,, it is characterized in that described metal-powder is sheet, flakey, spherical or its mixture according to claim 1 or 2 described electrically conducting coatings; The granularity of metal-powder is the 1-10 micron.
4, according to the described electrically conducting coating of claim 3, the granularity that it is characterized in that described metal-powder is the 3-5 micron.
5,, it is characterized in that described film-forming resin is a kind of or wherein several mixture in thermosetting acrylic resin, Hydroxylated acrylic resin, bisphenol A epoxide resin, polyester polyol resin, urethane resin or the vibrin according to the described electrically conducting coating of claim 1.
6,, it is characterized in that described sticking power promotes that resin is a vinyl chloride-vinyl acetate resin according to the described electrically conducting coating of claim 1.
7,, it is characterized in that described electrically conducting coating auxiliary agent is a kind of or its mixture in coupling agent, anti-settling agent or the wetting dispersing auxiliary according to the described electrically conducting coating of claim 1.
8,, it is characterized in that described coupling agent is titanate coupling agent and/or silane coupling agent according to the described electrically conducting coating of claim 7.
9,, it is characterized in that described titanate coupling agent is tetra-sodium type monoalkoxy class titanic acid ester or compound monoalkoxy class titanic acid ester according to the described electrically conducting coating of claim 8; Described silane coupling agent is to be a kind of or wherein several mixture in modified amido silane coupling agent, peroxy silane coupling agent or the azido-silane coupling agent.
10,, it is characterized in that described anti-settling agent is organic boron-moisten soil, aerosil or polyamide-based according to the described electrically conducting coating of claim 7; Described thinner is a kind of or wherein several mixture in hexone MIBK, ethyl acetate, butylacetate, toluene, dimethylbenzene or the pimelinketone.
11, a kind of method for preparing the described electrically conducting coating of claim 1 is characterized in that described method comprises the steps:
(1) metal-powder is placed in the vessel, adds the part thinner, seal, place 20-40min, make its wetting dispersion;
(2) film-forming resin, vinyl chloride-vinyl acetate resin and electrically conducting coating auxiliary agent are mixed;
(3) mixture and the mixing diluents that step (2) is made stirs 20-40mim with 900-3000 rev/min rotating speed, forms the electric conduction paint base-material;
(4) the electric conduction paint base-material that makes in the step (3) is joined in the wetting scattered metal-powder, stir;
(5) cross 100-300 purpose sieve, remove impurity, obtain electrically conducting coating.
12, in accordance with the method for claim 11, it is characterized in that dispersed with stirring in the described step (3) is to stir with 900-1100 rev/min rotating speed.
13, the described electrically conducting coating of a kind of claim 1 is characterized in that adding solidifying agent in the method for material surface filming in electrically conducting coating, and spraying or brushing are toasted 20-40min, promptly on material.
14, in accordance with the method for claim 13, it is characterized in that described material is plastic cement, glass, polishing stainless steel, aluminum magnesium alloy and passes through chemistry or the metallic surface of physics mode processing.
15, in accordance with the method for claim 14, it is characterized in that described solidifying agent is the tripolymer isocyanic ester, or aromatic isocyanate toasts under 60-80 ℃ of condition.
16, in accordance with the method for claim 15, it is characterized in that described solidifying agent is a masked isocyanate, toasts under 150-160 ℃ of condition.
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| CN2007100746534A CN101314680B (en) | 2007-05-30 | 2007-05-30 | Electrically-conducting paint, preparation method and uses thereof |
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| CN2007100746534A CN101314680B (en) | 2007-05-30 | 2007-05-30 | Electrically-conducting paint, preparation method and uses thereof |
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