CN101250357A - Electromagnetic shielding electrically-conducting paint - Google Patents
Electromagnetic shielding electrically-conducting paint Download PDFInfo
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- CN101250357A CN101250357A CNA2008100272566A CN200810027256A CN101250357A CN 101250357 A CN101250357 A CN 101250357A CN A2008100272566 A CNA2008100272566 A CN A2008100272566A CN 200810027256 A CN200810027256 A CN 200810027256A CN 101250357 A CN101250357 A CN 101250357A
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Abstract
The invention discloses electromagnetic shielding electrically-conducting paint, which comprises components with percentage by weight of 5-8 wt% acrylic acid, 1-2 wt% conductivity particle dispersing agent, 0.5-1.0 wt% anti-immersion agent, 10-20 wt% cellulose resin, 25-40 wt% conductivity particles and 58.5-29.0 wt% solvent. Materials in above formulation can be prepared into electrically-conducting paint through the high speed agitation, which can be used on the casings of computers, cell phones, GPS, electronic medical apparatuses, electronic instruments, electronic and electrical communication products, and has significant electromagnetic shielding effect.
Description
Technical field
The present invention relates to absorb the shielding electromagnetic waves material, relate in particular to a kind of coating of organic shielding material.
Background technology
Hertzian wave EMI can disturb the normal function of all electronic apparatuss, and HUMAN HEALTH is produced harm, EMI to product still be the mankind all be a kind of electronic pollution.Make the high molecule plastic housing possess electromagnetic radiation resistant and disturb and prevent that digital communication leaks, must use the conductive shield material, eliminate and alleviate Electromagnetic Interference as high molecule plastic surface of shell coating.Chinese patent CN1632001 provides and the present invention relates to a kind of shielding conductive paint/lacquer, by weight percentage, comprise following component: metal powder 25～45%, caking agent 5～25%, viscosity agent 1～10%, thickening material 1～12%, solvent 20～25%, pH value conditioning agent 0.5～2%, water 5～20%.Product of the present invention makes the sheet conducting powder closely arrange evenly when spraying film forming, coating has high conductivity and smooth finish and opacity; Preferred and the reasonable proportioning of raw material of the present invention makes its resistance on coating as thin as a wafer minimum, has good effectiveness of shielding; Electrically conducting coating of the present invention/lacquer has low-temperature quick-dry, excellent dry film sticking power, density, wear resistance.
Chinese patent CN2917207 provides a kind of environment-friendly type electromagnetic shielding electro-conductive material, it is basic unit with the plastic casing, be coated with thickness at 8～15 microns anti-electromagnetic screen coating layer at the internal surface of basic unit or outside surface, the dope layer that applies on the described plastic casing is sprayed coating or is coated with brush layer, dope layer is the electrically conducting coating layer, dope layer contains the film-forming resin of 10-30%, the low pine of 18-28% is than sheet composition metal conductive powder body, the environment-friendly type solvent of 10-30%, the metallics surface-modifying agent of 2-10%, the auxiliary agent of 0.5%-2.0%; Being applied to the occasion of wireless interference shielding or the low-cost high conductive surface of other needs, is the environment-friendly type electromagnetic shielding electro-conductive material of mobile phone, televisor, DVD, notebook computer, family expenses or nonmetal electronic product casings such as office appliance equipment, medical facilities.
Summary of the invention
The technical problem to be solved in the present invention provides another electromagnetic-shielding conductive coating.
The technical solution adopted in the present invention is: a kind of electromagnetic-shielding conductive coating, its weight percent consists of: vinylformic acid 5～8wt%, conducting particles dispersion agent 1～2wt%, anti-settling agent 0.5～1.0wt%, celluosic resin 10～20wt%, conducting particles 25～40wt%, solvent 58.5～29.0wt%.Wherein, the conducting particles dispersion agent is suspended in the mixture metallics, and metallics is mixed.
Further: the electromagnetic-shielding conductive coating in the above-mentioned prescription, described anti-settling agent is an aerosil, described celluosic resin is one or more in nitrocellulose resin, cellaburate resin, the ethyl cellulose resin.Described conducting particles is one or more in silver powder grain, copper powder grain, the nickel powder grain; Described solvent is one or more in N-BUTYL ACETATE, ethanol, ethyl acetate, the Virahol, and the anti-settling agent of selecting for use those skilled in the art to use always.
Mixture with above-mentioned prescription forms electrically conducting coating through high-speed stirring, and this electrically conducting coating sticking power is good, and force of cohesion is strong, do not have loose particle, can directly spray, it passes through to electroplate than electronic product, the effect that sputter shields is far better, and anti-screening ability is stronger, and production environment meets the ROHS standard, can be applicable to computer, mobile phone, GPS, electromedical equipment, electronic instrument, the shell of electronics, electrician's communication product, effectiveness is remarkable.
Embodiment
Following examples are that electromagnetic-shielding conductive coating is preferably filled a prescription; these prescriptions are the indefiniteness embodiment; it just is used to specify the present invention, and those skilled in the art can be protection scope of the present invention according to thinking of the present invention and the prescription that the proportioning of selecting materials filters out fully.
Embodiment 1
A kind of electromagnetic-shielding conductive coating, its weight percent consists of: vinylformic acid 6wt%, conducting particles dispersion agent 1wt%, aerosil 0.5wt%, nitrocellulose resin 10～20wt%, silver powder grain 25～40wt%, N-BUTYL ACETATE 58.5～29.0wt%, conductive dispersant in the said mixture is selected common dispersants for use, the material of above-mentioned prescription is formed electrically conducting coating through high-speed stirring, can be applicable to computer, mobile phone, GPS, electromedical equipment, electronic instrument, the shell of electronics, electrician's communication product, effectiveness is remarkable.
Embodiment 2
A kind of electromagnetic-shielding conductive coating, its weight percent consists of: vinylformic acid 6wt%, conducting particles dispersion agent 1.2wt%, aerosil 0.6wt%, nitrocellulose resin 10～20wt%, silver powder grain 25～40wt%, N-BUTYL ACETATE 58.5～29.0wt%, conductive dispersant in the said mixture is selected common dispersants for use, the material of above-mentioned prescription is formed electrically conducting coating through high-speed stirring, can be applicable to computer, mobile phone, GPS, electromedical equipment, electronic instrument, the shell of electronics, electrician's communication product, effectiveness is remarkable.
Embodiment 3
A kind of electromagnetic-shielding conductive coating, its weight percent consists of: vinylformic acid 6wt%, conducting particles dispersion agent 1.5wt%, aerosil 0.7wt%, cellaburate resin 10～20wt%, silver-bearing copper powder 25～40wt%, ethanol 58.5～29.0wt%, conductive dispersant in the said mixture is selected common dispersants for use, the material of above-mentioned prescription is formed electrically conducting coating through high-speed stirring, can be applicable to computer, mobile phone, GPS, electromedical equipment, electronic instrument, the shell of electronics, electrician's communication product, effectiveness is remarkable.
Embodiment 4
A kind of electromagnetic-shielding conductive coating, its weight percent consists of: vinylformic acid 7wt%, conducting particles dispersion agent 1.8wt%, aerosil 0.8wt%, cellaburate resin 10～20wt%, silver-bearing copper powder 25～40wt%, ethanol 58.5～29.0wt%, conductive dispersant in the said mixture is selected common dispersants for use, the material of above-mentioned prescription is formed electrically conducting coating through high-speed stirring, can be applicable to computer, mobile phone, GPS, electromedical equipment, electronic instrument, the shell of electronics, electrician's communication product, effectiveness is remarkable.
Embodiment 5
A kind of electromagnetic-shielding conductive coating, its weight percent consists of: vinylformic acid 7wt%, conducting particles dispersion agent 2wt%, aerosil 0.9wt%, cellaburate resin 10～20wt%, nickel powder grain 25～40wt%, ethyl acetate 58.5～29.0wt%, conductive dispersant in the said mixture is selected common dispersants for use, the material of above-mentioned prescription is formed electrically conducting coating through high-speed stirring, can be applicable to computer, mobile phone, GPS, electromedical equipment, electronic instrument, the shell of electronics, electrician's communication product, effectiveness is remarkable.
Embodiment 6
A kind of electromagnetic-shielding conductive coating, its weight percent consists of: vinylformic acid 7wt%, conducting particles dispersion agent 2wt%, aerosil 0.7wt%, ethyl cellulose resin 10～20wt%, nickel powder grain 25～40wt%, ethyl acetate 58.5～29.0wt%, conductive dispersant in the said mixture is selected common dispersants for use, the material of above-mentioned prescription is formed electrically conducting coating through high-speed stirring, can be applicable to computer, mobile phone, GPS, electromedical equipment, electronic instrument, the shell of electronics, electrician's communication product, effectiveness is remarkable.
Embodiment 7
A kind of electromagnetic-shielding conductive coating, its weight percent consists of: vinylformic acid 8wt%, conducting particles dispersion agent 1.5wt%, aerosil 0.6wt%, ethyl cellulose resin 10～20wt%, copper powder grain 25～40wt%, Virahol 58.5～29.0wt%, conductive dispersant in the said mixture is selected common dispersants for use, the material of above-mentioned prescription is formed electrically conducting coating through high-speed stirring, can be applicable to computer, mobile phone, GPS, electromedical equipment, electronic instrument, the shell of electronics, electrician's communication product, effectiveness is remarkable.
Embodiment 8
A kind of electromagnetic-shielding conductive coating, its weight percent consists of: vinylformic acid 8wt%, conducting particles dispersion agent 1.8wt%, aerosil 0.9wt%, ethyl cellulose resin 10～20wt%, copper powder grain 25～40wt%, Virahol 58.5～29.0wt%, conductive dispersant in the said mixture is selected common dispersants for use, the material of above-mentioned prescription is formed electrically conducting coating through high-speed stirring, can be applicable to computer, mobile phone, GPS, electromedical equipment, electronic instrument, the shell of electronics, electrician's communication product, effectiveness is remarkable.
Claims (5)
1, a kind of electromagnetic-shielding conductive coating, its weight percent consists of: vinylformic acid 5～8wt%, conducting particles dispersion agent 1～2wt%, anti-settling agent 0.5～1.0wt%, celluosic resin 10～20wt%, conducting particles 25～40wt%, solvent 58.5～29.0wt%.
2, electromagnetic-shielding conductive coating as claimed in claim 2 is characterized in that: described anti-settling agent is an aerosil.
3, electromagnetic-shielding conductive coating as claimed in claim 3 is characterized in that: described celluosic resin is one or more in nitrocellulose resin, cellaburate resin, the ethyl cellulose resin.
4, electromagnetic-shielding conductive coating as claimed in claim 3 is characterized in that: described conducting particles is one or more in silver (Ag) powder, silver-bearing copper (Ag-Cu) powder, nickel (Ni) powder, copper (Cu) powder.
5, electromagnetic-shielding conductive coating as claimed in claim 4 is characterized in that: described solvent is one or more in N-BUTYL ACETATE, ethanol, ethyl acetate, the Virahol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100272566A CN101250357A (en) | 2008-04-03 | 2008-04-03 | Electromagnetic shielding electrically-conducting paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100272566A CN101250357A (en) | 2008-04-03 | 2008-04-03 | Electromagnetic shielding electrically-conducting paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101250357A true CN101250357A (en) | 2008-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100272566A Pending CN101250357A (en) | 2008-04-03 | 2008-04-03 | Electromagnetic shielding electrically-conducting paint |
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| CN (1) | CN101250357A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749753A (en) * | 2012-06-11 | 2012-10-24 | 深超光电（深圳）有限公司 | Display panel for improving polaroid attachment |
| CN103333574A (en) * | 2013-06-25 | 2013-10-02 | 丹阳市佳美化工有限公司 | Anti-shielding conductive coating |
| CN104479491A (en) * | 2014-11-21 | 2015-04-01 | 芜湖市鸿坤汽车零部件有限公司 | Uvioresistant anti-corrosive and anti-shielding coating and preparation method thereof |
| CN107488840A (en) * | 2016-06-10 | 2017-12-19 | 株式会社胶体油墨 | For the composition for preparing plate substrate and prepared plate substrate |
| CN107912012A (en) * | 2017-11-29 | 2018-04-13 | 横店集团东磁股份有限公司 | A kind of electromagnetic wave shielding/absorption composite paster and preparation method thereof |
| CN108485357A (en) * | 2018-05-04 | 2018-09-04 | 合肥酷睿网络科技有限公司 | A kind of electromagnetic shielding grounded screen conductive coating and preparation method thereof |
-
2008
- 2008-04-03 CN CNA2008100272566A patent/CN101250357A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749753A (en) * | 2012-06-11 | 2012-10-24 | 深超光电（深圳）有限公司 | Display panel for improving polaroid attachment |
| CN103333574A (en) * | 2013-06-25 | 2013-10-02 | 丹阳市佳美化工有限公司 | Anti-shielding conductive coating |
| CN103333574B (en) * | 2013-06-25 | 2016-03-09 | 丹阳市佳美化工有限公司 | Anti-shielding conductive coating |
| CN104479491A (en) * | 2014-11-21 | 2015-04-01 | 芜湖市鸿坤汽车零部件有限公司 | Uvioresistant anti-corrosive and anti-shielding coating and preparation method thereof |
| CN107488840A (en) * | 2016-06-10 | 2017-12-19 | 株式会社胶体油墨 | For the composition for preparing plate substrate and prepared plate substrate |
| CN107912012A (en) * | 2017-11-29 | 2018-04-13 | 横店集团东磁股份有限公司 | A kind of electromagnetic wave shielding/absorption composite paster and preparation method thereof |
| CN107912012B (en) * | 2017-11-29 | 2020-07-07 | 横店集团东磁股份有限公司 | Electromagnetic wave shielding/absorbing composite patch and preparation method thereof |
| CN108485357A (en) * | 2018-05-04 | 2018-09-04 | 合肥酷睿网络科技有限公司 | A kind of electromagnetic shielding grounded screen conductive coating and preparation method thereof |
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Open date: 20080827 |