CN102268213A - Electromagnetic wave shielding coating and preparation method thereof - Google Patents
Electromagnetic wave shielding coating and preparation method thereof Download PDFInfo
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- CN102268213A CN102268213A CN2011102500272A CN201110250027A CN102268213A CN 102268213 A CN102268213 A CN 102268213A CN 2011102500272 A CN2011102500272 A CN 2011102500272A CN 201110250027 A CN201110250027 A CN 201110250027A CN 102268213 A CN102268213 A CN 102268213A
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- coupling agent
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- wave screen
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Abstract
The invention discloses a formula of an electromagnetic wave shielding coating and a preparation method thereof. A water-soluble coating is prepared from nickel powder which has high oxidation resistance and serves as a main material, ferrite powder serving as a wave absorbing material, epoxy resin, a film forming aid, a coupling agent, a dispersing agent and the like. According to the prepared water-soluble coating, the adhesive power is over 23 MPa, and the shielding efficiency of 55dB-75dB can be achieved on electromagnetic waves in the frequency range 40 MHz-18 GHz.
Description
Technical field
The present invention relates to a kind of coating, be specifically related to a kind of prescription of coating that can shielding electromagnetic wave; The invention still further relates to the preparation method of this coating.
Background technology
Along with fast development of information technology, in the industry-by-industry widespread use, these electronic and electrical equipments in use produce a large amount of hertzian wave as the carrier of information technology for computer network, information processing device, electronic communication equipment and various electrical equipment.Though hertzian wave is used to remote control electric electrical equipment, long-distance transmissions information,, cause serious consequence even also easily make electronic and electrical equipment be subjected to outside electromagnetic interference and the paralysis that occurs botching routines.Therefore need adopt an effective measure, the protection machinery equipment is not subjected to the external electromagnetic wave excitation.Cause the angle of divulging a secret from the stolen receipts of electromagnetic signal, no matter military secret or secret of the trade all can cause great loss to relevant unit.Must take corresponding shielding measure for this reason, prevent that electromagnetic signal from revealing and being detected, in case give away secrets.Pollute from pre-anti electromagnetic wave, the protection to various electromagnetic pollution harm has now caused the great attention of the environmental administration and the parties concerned, and the shielding electromagnetic pollution makes it be limited to certain zone, has become environmental protection field one of active subject the most.In order to contain the electromagnetic pollution that increases day by day, improve people's living environment, the effectiveness of shielding that improves buildings is more and more important.Method commonly used has add the metallic conduction net in building walls, adds in concrete that electrical carbon is black, fiber and brushing shielding coating etc.Conventional solvent type shielding coating in use inevitably can volatilize a large amount of objectionable impuritiess in the market, and environment and HUMAN HEALTH are caused harmful effect, so the electromagnetic screen coating Water-borne modification is the emphasis trend of development.And traditional shielding coating is by reflecting the realization shielding electromagnetic waves, easily produce secondary clutter problem, causing secondary pollution.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of novel aqueous electromagnetic shielding antiradar coatings that is applied to building masonry wall is provided, and its performance has the effect of broadband, high effectiveness of shielding and environmental protection; The present invention provides the preparation method of this coating simultaneously.
Electromagnetic wave screen paint of the present invention is by the raw material preparing that comprises following component.Feed composition is expressed as by its weight percent:
Nickel powder 45.6～60.7%; Ferrite powder 6.5～15.2%;
Resins, epoxy 29.9～39.5%; Film coalescence aid 0.6～1.3%;
Coupling agent 0.6～1.3%; Dispersion agent 0.6～1.3%;
Wherein, the preferred water-soluble film-forming resin of film coalescence aid;
Coupling agent is selected any in titanic acid ester or the silane for use;
Dispersion agent uses kind commonly used to get final product.
The preparation method of electromagnetic wave screen paint of the present invention is:
Step 1: preparation coupling agent solution
Select any in ethyl acetate, methyl acetate, butylacetate, acetone, methylethylketone or the ethanol for use, coupling agent titanic acid ester or silane are added in the solvent, under normal temperature, stir, be mixed with coupling agent solution as solvent.Coupling agent concentration is 1.7%～4.8% in the solution.
Step 2: at normal temperatures with nickel powder, ferrite powder, dispersion agent and coupling agent solution thorough mixing, disperse in grinding machine for grinding, sieve, sieve aperture suits at the 280-300 order; Toasted 60 minutes down at 50～80 ℃ afterwards.
Step 3: select any in ethyl acetate, methyl acetate, butylacetate, acetone, methylethylketone or the ethanol for use as solvent, work in-process, Resins, epoxy, the water-soluble film-forming resin of step 2 preparation are added in the solvent, stir at normal temperatures and make its thorough mixing, the viscosity that adds dispersion agent adjusting liquid then reaches 72S-76S, and optimum viscosity is 74S.The gained finished product is electromagnetic wave screen paint finished product of the present invention.
Electromagnetic wave screen paint of the present invention adds absorbing material based on the good nickel powder of antioxidant property, belongs to water-soluble substances, does not contain the material that poisonous solvent, fluidizer, film forming agent etc. can cause environmental pollution.Electromagnetic wave screen paint of the present invention can adopt common brushing equipment to brush, dry at normal temperatures and curing, and sticking power is more than 23Mpa.Can reach the effectiveness of shielding of 55dB～75dB to hertzian wave in 40MHz～18GHz range of frequency, multilayer is used can reach better shielding properties; Have high ductibility simultaneously, can cover the slight crack of surface of wall, the electromagnetic leakage that prevention causes owing to wall crazing.
Embodiment
The invention will be further described by the following examples.
Embodiment 1-5 prepares electromagnetic wave screen paint main raw material component and consumption (weight unit: gram)
Embodiment 6-10 prepares electromagnetic wave screen paint feed composition and consumption (weight unit: gram)
By the listed raw material of above-listed embodiment 1-10, with nickel powder and ferrite powder with mixes as the water-soluble film-forming resin of film coalescence aid, Resins, epoxy, dispersion agent-rise dry after, in grinding machine for grinding, add coupling agent solution again, with dispersion agent coating is adjusted to viscosity 72S-76S.
Wherein coupling agent solution is select titanic acid ester or silane for use a kind of, and any as solvent with in ethyl acetate, methyl acetate, butylacetate, acetone, methylethylketone or the ethanol is mixed with concentration and is 1.7%～4.8% solution.
Claims (4)
1. an electromagnetic wave screen paint is characterized in that, it is that feed composition is expressed as by its weight percent by the raw material preparing that comprises following component:
Nickel powder 45.6～60.7%; Ferrite powder 6.5～15.2%;
Resins, epoxy 29.9～39.5%; Film coalescence aid 0.6～1.3%;
Coupling agent 0.6～1.3%; Dispersion agent 0.6～1.3%;
Wherein, the preferred water-soluble film-forming resin of film coalescence aid;
Coupling agent is selected any in titanic acid ester or the silane for use;
Dispersion agent uses kind commonly used to get final product.
2. electromagnetic wave screen paint according to claim 1 is characterized in that, described coupling agent is titanic acid ester or silane.
3. electromagnetic wave screen paint according to claim 2 is characterized in that, is a kind of in ethyl acetate, methyl acetate, butylacetate, acetone, methylethylketone or the ethanol in order to the solvent of dissolving coupling agent.
4. the preparation method of the described electromagnetic wave screen paint of claim 1 is characterized in that, comprises following processing step:
Step 1: the following and coupling agent solvent with selected coupling agent normal temperature, stir, coupling agent concentration is 1.7%～4.8% in the solution;
Step 2: at normal temperatures nickel powder, ferrite powder, dispersion agent and coupling agent solution are mixed, grind and disperse, sieve, oven dry;
Step 3: at normal temperatures, with work in-process, Resins, epoxy, water-soluble film-forming resin and the solvent of step 2 preparation, the viscosity that adds dispersion agent adjusting liquid reaches 74S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102500272A CN102268213A (en) | 2011-08-29 | 2011-08-29 | Electromagnetic wave shielding coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102500272A CN102268213A (en) | 2011-08-29 | 2011-08-29 | Electromagnetic wave shielding coating and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN102268213A true CN102268213A (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102500272A Pending CN102268213A (en) | 2011-08-29 | 2011-08-29 | Electromagnetic wave shielding coating and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104212311A (en) * | 2014-09-11 | 2014-12-17 | 叶长青 | Latex paint with electromagnetic shielding performance |
| CN105364078A (en) * | 2015-11-18 | 2016-03-02 | 北京有色金属研究总院 | Method for preparing soft magnetic alloy coating |
| CN105647333A (en) * | 2014-10-11 | 2016-06-08 | 邓智平 | Preparation method of rare earth transition intermetallic compound/ferrite composite radar absorbing coating |
| CN105860928A (en) * | 2016-05-06 | 2016-08-17 | 陈昌 | Microwave absorbing nano material and preparation method thereof |
| CN106147514A (en) * | 2016-04-28 | 2016-11-23 | 东华大学 | A kind of aqueous electromagnetic wave screen paint and preparation method thereof |
| CN107163629A (en) * | 2017-06-07 | 2017-09-15 | 合肥励仙电力工程有限公司 | It is a kind of for magnetic field shielding coating of distribution transformer and preparation method thereof |
| CN107434371A (en) * | 2016-05-25 | 2017-12-05 | 北新集团建材股份有限公司 | A kind of mineral wool sound absorption board of anti-electromagnetic radiation and preparation method thereof |
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| JP2000328006A (en) * | 1999-05-17 | 2000-11-28 | Sony Corp | Emc module and its manufacture |
| CN1552777A (en) * | 2003-06-06 | 2004-12-08 | 上海君江新材料有限公司 | Absorbing screening material |
| CN102020899A (en) * | 2010-11-26 | 2011-04-20 | 中国人民解放军第三军医大学 | Composite coating electromagnetic shielding paint and composite coating electromagnetic shielding material prepared therefrom |
| CN102108237A (en) * | 2010-12-29 | 2011-06-29 | 东莞市高能磁电技术有限公司 | Preparation method and product of infrared stealth wave-absorbing composite protective paint |
-
2011
- 2011-08-29 CN CN2011102500272A patent/CN102268213A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000328006A (en) * | 1999-05-17 | 2000-11-28 | Sony Corp | Emc module and its manufacture |
| CN1552777A (en) * | 2003-06-06 | 2004-12-08 | 上海君江新材料有限公司 | Absorbing screening material |
| CN102020899A (en) * | 2010-11-26 | 2011-04-20 | 中国人民解放军第三军医大学 | Composite coating electromagnetic shielding paint and composite coating electromagnetic shielding material prepared therefrom |
| CN102108237A (en) * | 2010-12-29 | 2011-06-29 | 东莞市高能磁电技术有限公司 | Preparation method and product of infrared stealth wave-absorbing composite protective paint |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104212311A (en) * | 2014-09-11 | 2014-12-17 | 叶长青 | Latex paint with electromagnetic shielding performance |
| CN104212311B (en) * | 2014-09-11 | 2016-08-24 | 叶长青 | A kind of emulsion paint having capability of electromagnetic shielding |
| CN105647333A (en) * | 2014-10-11 | 2016-06-08 | 邓智平 | Preparation method of rare earth transition intermetallic compound/ferrite composite radar absorbing coating |
| CN105364078A (en) * | 2015-11-18 | 2016-03-02 | 北京有色金属研究总院 | Method for preparing soft magnetic alloy coating |
| CN106147514A (en) * | 2016-04-28 | 2016-11-23 | 东华大学 | A kind of aqueous electromagnetic wave screen paint and preparation method thereof |
| CN106147514B (en) * | 2016-04-28 | 2018-07-17 | 东华大学 | A kind of aqueous electromagnetic wave screen paint and preparation method thereof |
| CN105860928A (en) * | 2016-05-06 | 2016-08-17 | 陈昌 | Microwave absorbing nano material and preparation method thereof |
| CN107434371A (en) * | 2016-05-25 | 2017-12-05 | 北新集团建材股份有限公司 | A kind of mineral wool sound absorption board of anti-electromagnetic radiation and preparation method thereof |
| CN107163629A (en) * | 2017-06-07 | 2017-09-15 | 合肥励仙电力工程有限公司 | It is a kind of for magnetic field shielding coating of distribution transformer and preparation method thereof |
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Application publication date: 20111207 |