CN102443331A - Electromagnetic-shielding conductive coating - Google Patents
Electromagnetic-shielding conductive coating Download PDFInfo
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- CN102443331A CN102443331A CN2011103286401A CN201110328640A CN102443331A CN 102443331 A CN102443331 A CN 102443331A CN 2011103286401 A CN2011103286401 A CN 2011103286401A CN 201110328640 A CN201110328640 A CN 201110328640A CN 102443331 A CN102443331 A CN 102443331A
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- electromagnetic
- coating
- shielding conductive
- conductive coating
- nickel powder
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides an electromagnetic-shielding conductive coating, comprising acrylic resin solution, nickel powder, ethyl silicate and decyl alcohol. The electromagnetic-shielding conductive coating provided by the invention is a functional fluid coating suitable for electronic products taking engineering plastic as housings, and can be sprayed or brushed on the surfaces of different plastic parts conveniently to form electromagnetic-shielding conductive layers to obtain good electromagnetic-shielding effect.
Description
Technical field
The present invention relates to chemical field, relate in particular to a kind of electromagnetic-shielding conductive coating.
Background technology
Along with popularizing of the fast development of electronic industry and electronic product, Here it is ten hundreds of electronics, electrical equipment reflects out different frequency when work hertzian wave another kind of new " public hazards " have appearred socially.Various electronics, electrical equipment and communication, transmitting line that these hertzian wave can for the work that closes on cause cross interference, thereby cause phenomenons such as out of control such as the machine of computer manipulation, that communication equipment work is not normal, and be very harmful.
Growing along with macromolecular material, the engineering plastics product is used widely in electronic industry.But because plastics are to the unshielded effect of hertzian wave; Make with engineering plastics to be that Information Technology Agreement equipment and some other electronic equipments of casing in use might be as emissive source; Cause the space hertzian wave to pollute, or receive the interference of external electromagnetic ripple, influence the work of equipment.
Summary of the invention
The present invention has overcome deficiency of the prior art, and a kind of electromagnetic-shielding conductive coating is provided, to realize the shielding electromagnetic waves effect.
In order to realize above-mentioned purpose, adopt following technical scheme:
A kind of electromagnetic-shielding conductive coating, the component of said coating and weight part are:
Acrylic resin soln 16-25
Nickel powder 40-55
Tetraethyl silicate 1-2
Decyl alcohol 20-35.
Acrylic resin soln is to be base-material with the acrylic ester monomer, under the effect of certain temperature, pressure and emulsifying agent, adds initiator and carries out the white liquid that solution polymerization makes.Acrylic resin soln has sticking power and higher hardness preferably to frosting, and has performances such as weather-proof, heat-resisting, chemical-resistant reagent, in this coating, is used as film-forming resin.
Nickel powder is the silver gray metal-powder, and electromagnetic high and low frequency is had good shielding character, and it is the 200-300 order that this coating is selected granularity for use.Granularity is meticulous, and the oxidisability of metal will sharply increase, and is not easy in the use to preserve, and is prone to cause danger; Granularity is excessive, and the space increases between particulate, and resistance rises, and the settling velocity quickening of particulate in coating, influences workability.Nickel powder is used as the electromagnetic shielding conductive material in this coating.
Tetraethyl silicate is a colourless liquid, and is miscible in ethanol, acetone, gasoline, water-soluble hardly; Meet water and slowly decompose, precipitated silicic acid and silicon oxide are used as the interpolation auxiliary agent in this coating; It is more even to impel metal particle in coating, to disperse, and improves the etch resistant properties of metal particle.
Decyl alcohol is colourless viscous liquid, and rose scent slightly can be miscible, water insoluble with alcohol, ether etc., is flammable liquid, in this coating, is used as solvent, regulates the viscosity of coating, and the effect of certain control coating curing speed is arranged.
The manufacture craft of said coating is following:
S1 is by above-mentioned formulation ratio, acrylic resin soln and decyl alcohol solvent is added in the container to mix earlier, adds tetraethyl silicate and nickel powder then;
S2 sends the material that mixes into shredder and grinds, and thorough mixing is the back packing evenly.
In step S2, milling time plays an important role to the refinement and the dispersion of metal particle in the coating.Milling time is short, the refinement of metal particle and bad dispersibility; Milling time is long, can make coating gelatin phenomenon occur.In addition, the material of grinding pot also can exert an influence to coating property, and material is poor, and a jar surface wear material is mingled in the coating, influences the electroconductibility and the etch resistant properties of coating.
Electromagnetic-shielding conductive coating provided by the invention; Be to be the suitable functional fluid coating of electronic product of housing with engineering plastics; Can spray or brush plastic part surface easily, form the electromagnetic shielding conductive layer, have good effectiveness in different shape.
Embodiment
Below in conjunction with embodiment the present invention is done further description.
At first by above-mentioned formulation ratio, 20g acrylic resin soln and 30g decyl alcohol solvent are added in the container mix earlier, add 2g tetraethyl silicate and 48g nickel powder then.The material that mixes is sent into shredder grind, thorough mixing is the back packing evenly.
During use, dry after will being cleaned up with gasoline by the workpiece surface of application earlier, spray with spray gun then, nozzle and workpiece distance are 20-30 centimetre, spray 2-3 time repeatedly, are cured processing then.Generally speaking, the coating of 50 micron thick is under 45-55 ℃, and available fingers-touch method detects it and whether reaches surface drying after 15 minutes.
Claims (2)
1. an electromagnetic-shielding conductive coating is characterized in that, the component of said coating and weight part are:
Acrylic resin soln 16-25
Nickel powder 40-55
Tetraethyl silicate 1-2
Decyl alcohol 20-35,
The manufacture craft of said coating is following:
S1 is by above-mentioned formulation ratio, acrylic resin soln and decyl alcohol solvent is added in the container to mix earlier, adds tetraethyl silicate and nickel powder then;
S2 sends the material that mixes into shredder and grinds, and thorough mixing is the back packing evenly.
2. electromagnetic-shielding conductive coating according to claim 1 is characterized in that, it is the 200-300 order that said nickel powder is selected granularity for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103286401A CN102443331A (en) | 2011-10-26 | 2011-10-26 | Electromagnetic-shielding conductive coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103286401A CN102443331A (en) | 2011-10-26 | 2011-10-26 | Electromagnetic-shielding conductive coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102443331A true CN102443331A (en) | 2012-05-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103286401A Pending CN102443331A (en) | 2011-10-26 | 2011-10-26 | Electromagnetic-shielding conductive coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102443331A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104087098A (en) * | 2014-07-15 | 2014-10-08 | 倪骊恒 | Electromagnetic shielding conductive coating |
| CN104312333A (en) * | 2014-10-22 | 2015-01-28 | 上海电力学院 | Anti-corrosion and conductive coating rich in nickle and preparation method of coating |
| CN104356801A (en) * | 2014-10-17 | 2015-02-18 | 苏州莱特复合材料有限公司 | Electromagnetic shielding metal powder composite coating and preparation method thereof |
| CN115193671A (en) * | 2022-08-09 | 2022-10-18 | 云南省基础测绘技术中心 | Method for shielding electromagnetic interference of aerial camera of large unmanned aerial vehicle |
-
2011
- 2011-10-26 CN CN2011103286401A patent/CN102443331A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104087098A (en) * | 2014-07-15 | 2014-10-08 | 倪骊恒 | Electromagnetic shielding conductive coating |
| CN104356801A (en) * | 2014-10-17 | 2015-02-18 | 苏州莱特复合材料有限公司 | Electromagnetic shielding metal powder composite coating and preparation method thereof |
| CN104312333A (en) * | 2014-10-22 | 2015-01-28 | 上海电力学院 | Anti-corrosion and conductive coating rich in nickle and preparation method of coating |
| CN115193671A (en) * | 2022-08-09 | 2022-10-18 | 云南省基础测绘技术中心 | Method for shielding electromagnetic interference of aerial camera of large unmanned aerial vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120509 |