CN100482753C - Composite resin type electromagnetic wave shielding coating and its preparation method - Google Patents
Composite resin type electromagnetic wave shielding coating and its preparation method Download PDFInfo
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- CN100482753C CN100482753C CNB2006100495832A CN200610049583A CN100482753C CN 100482753 C CN100482753 C CN 100482753C CN B2006100495832 A CNB2006100495832 A CN B2006100495832A CN 200610049583 A CN200610049583 A CN 200610049583A CN 100482753 C CN100482753 C CN 100482753C
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Abstract
The invention discloses a compound resin type electromagnetic wave screening coating material and process for preparation, wherein the constituents include micron grade nickel powder 50-65%, film forming resin 31.5-43%, chlorinated polypropylene 0.5-3%, coupling agent 0.5-0.7%, dispersing agent 2.5-3.3%. The preparing process comprises preparation of coupling agent solution, nickel powder surface coupling treatment and coating material preparation.
Description
Technical field
The invention belongs to the electromagnetic wave screen paint field, be specifically related to a kind of shielding properties excellence, composite resin type electromagnetic wave shielding coating applied widely and preparation method thereof.
Background technology
At present, the development of electromagnetic shielding material more and more is subject to people's attention with exploitation, discloses " raw mix of electromagnetic wave screen paint and preparation method thereof ", Chinese patent ZL 97107515 as Chinese patent ZL 97107514 and discloses " raw mix of electromagnetic wave screen paint and preparation method thereof " etc.Usually, electromagnetic wave screen paint mainly is made up of film-forming resin and conductive filler material, and wherein film-forming resin is the key factor of decision coating physical and mechanical properties.Acrylic resin is generally selected for use with its good combination property and low price to make film-forming resin, the coating of the sheet material of often some low polarity or non-polar polymer being made by its coating of making is relatively poor, therefore how to improve the focus that its sticking power is a research.
Summary of the invention
Purpose of the present invention provides a kind of composite resin type electromagnetic wave shielding coating and preparation method thereof, mainly be in the coating preparation process, to introduce the Chlorinated Polypropylene III that the sheet material of being made by low polarity and non-polar polymer is had good adhesive, increase coating adhesion, improve the performance of coating.
For solving the problems of the technologies described above, the present invention adopts following technical proposals:
The composite resin type electromagnetic wave shielding coating component comprises film-forming resin, conductive filler material, coupling agent and dispersion agent, it is characterized in that film-forming resin is the mixture of acrylic resin and Chlorinated Polypropylene III, and the weight percentage of each component is:
Conductive filler material 50～65%
Chlorinated Polypropylene III 0.5～3%
Acrylic resin 31.5～43%
Coupling agent 0.5～0.7%
Dispersion agent 2.5～3.3%.
Described conductive filler material is the micron order nickel powder.Coupling agent is a titanate coupling agent.Dispersion agent is an organobentonite.
The preparation method's of composite electromagnetic wave shielded coating step is as follows:
1) preparation coupling agent solution:
Coupling agent solution is stirred by coupling agent and solvent and gets final product; The proportioning of coupling agent and solvent is: coupling agent: solvent=1.7～4.8%: 95.2～98.3%; Solvent is ethyl acetate, methyl acetate, butylacetate, acetone, methylethylketone or ethanol;
2) surface treatment of micron order nickel powder
The micron order nickel powder is put into coupling agent solution ball milling, the dispersion that is added with dispersion agent, filter then, dry;
3) coating preparation
With film-forming resin, the micron order nickel powder after surface treatment, dispersion agent, solvent, fully disperse, add thinner at last and regulate viscosity, promptly make coating, solvent is the double solvents of tetracol phenixin and ethyl acetate.
The present invention has the following advantages:
1) coating that is provided all has good adhesion strength to various plastic plates and the sheet metal that comprises polyolefine;
2) coating that makes of coating has good shielding properties to hertzian wave thus;
3) dry and curing is at room temperature carried out, and save energy is easy to use;
4) simple, the easy handling of the preparation method of coating, use conventional equipment fully, the cost performance height is convenient to promote.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment 1
The technical process and the processing parameter of present embodiment are as follows:
1, batching
Micron order nickel powder 65%
Acrylic resin 31.5%
Chlorinated Polypropylene III 0.5%
Coupling agent 0.5%
Dispersion agent 2.5%
2, the preparation of coupling agent solution
Coupling agent is selected titanic acid ester for use, and solvent is selected ethyl acetate for use, and the proportioning of titanic acid ester and ethyl acetate is: titanic acid ester: ethyl acetate=3.8%: 96.2%, process for preparation stir for they are mixed at normal temperatures.
3, the surface treatment of micron order nickel powder
With particle diameter is that 2 microns nickel powder is put into the coupling agent solution for preparing, and with ball mill grinding 10 minutes, removes unnecessary solvent then, 60 ℃ of oven dry down.
4, the preparation of coating
The coating preparation is carried out at normal temperatures.Film-forming resin is selected acrylic resin, Chlorinated Polypropylene III for use; Solvent is selected tetracol phenixin, ethyl acetate for use; Coupling agent is selected titanic acid ester for use; Dispersion agent is selected organobentonite for use.
At first, add the thinner ethyl acetate then, regulate viscosity and can make finished product coating surface treated nickel powder and the acrylic resin that is added with dispersion agent ball milling 15 minutes in ball mill.Through the test of respective coatings volume specific resistance and the computational analysis of shielding properties, capability of electromagnetic shielding can reach 38～62dB when coat-thickness 200 μ m.Sticking power can reach 2 grades by GB/T 9286-1998 test.
Embodiment 2
The technical process and the processing parameter of present embodiment are as follows:
1, batching
Micron order nickel powder 61.6%
Acrylic resin 32.6%
Chlorinated Polypropylene III 2.2%
Coupling agent 0.6%
Dispersion agent 3%
2, the preparation of coupling agent solution
Coupling agent is selected titanic acid ester for use, and solvent is selected ethyl acetate for use, and the proportioning of titanic acid ester and ethyl acetate is: titanic acid ester: ethyl acetate=3.8%: 96.2%, process for preparation stir for they are mixed at normal temperatures.
3, the surface treatment of micron order nickel powder
With particle diameter is that 2 microns nickel powder is put into the coupling agent solution for preparing, and with ball mill grinding 10 minutes, removes unnecessary solvent then, 60 ℃ of oven dry down.
4, the preparation of coating
The coating preparation is carried out at normal temperatures.Film-forming resin is selected acrylic resin, Chlorinated Polypropylene III for use; Solvent is selected tetracol phenixin, ethyl acetate for use; Coupling agent is selected titanic acid ester for use; Dispersion agent is selected organobentonite for use.
At first, add the thinner ethyl acetate then, regulate viscosity and can make finished product coating surface treated nickel powder and the acrylic resin that is added with dispersion agent ball milling 15 minutes in ball mill.Through the test of respective coatings volume specific resistance and the computational analysis of shielding properties, capability of electromagnetic shielding can reach 38～62dB when coat-thickness 200 μ m.Sticking power can reach 1 grade by GB/T 9286-1998 test.
Embodiment 3
The technical process and the processing parameter of present embodiment are as follows:
1, batching
Micron order nickel powder 60%
Acrylic resin 35%
Chlorinated Polypropylene III 1.5%
Coupling agent 0.5%
Dispersion agent 3%
2, the preparation of coupling agent solution
Coupling agent is selected titanic acid ester for use, and solvent is selected ethyl acetate for use, and the proportioning of titanic acid ester and ethyl acetate is: titanic acid ester: ethyl acetate=3.8%: 96.2%, process for preparation stir for they are mixed at normal temperatures.
3, the surface treatment of micron order nickel powder
With particle diameter is that 2 microns nickel powder is put into the coupling agent solution for preparing, and with ball mill grinding 10 minutes, removes unnecessary solvent then, 60 ℃ of oven dry down.
4, the preparation of coating
The coating preparation is carried out at normal temperatures.Film-forming resin is selected acrylic resin, Chlorinated Polypropylene III for use; Solvent is selected tetracol phenixin, ethyl acetate for use; Coupling agent is selected titanic acid ester for use; Dispersion agent is selected organobentonite for use.
At first, add the thinner ethyl acetate then, regulate viscosity and can make finished product coating surface treated nickel powder and the acrylic resin that is added with dispersion agent ball milling 15 minutes in ball mill.Through the test of respective coatings volume specific resistance and the computational analysis of shielding properties, capability of electromagnetic shielding can reach 38～62dB when coat-thickness 200 μ m.Sticking power can reach 1 grade by GB/T 9286-1998 test.
Embodiment 4
The technical process and the processing parameter of present embodiment are as follows:
1, batching
Micron order nickel powder 58.7%
Filmogen 34%
Chlorinated Polypropylene III 3.8%
Coupling agent 0.6%
Dispersion agent 2.9%
2, the preparation of coupling agent solution
Coupling agent is selected titanic acid ester for use, and solvent is selected ethyl acetate for use, and the proportioning of titanic acid ester and ethyl acetate is: titanic acid ester: ethyl acetate=3.8%: 96.2%, they are mixed at normal temperatures, and stir.
3, the surface treatment of micron order nickel powder
With particle diameter is that 2 microns nickel powder is put into the coupling agent solution for preparing, and with ball mill grinding agent in 10 minutes, removes unnecessary solvent then, 60 ℃ of oven dry down.
4, the preparation of coating
The coating preparation is carried out at normal temperatures.Film-forming resin is selected acrylic resin for use; Solvent is selected tetracol phenixin, ethyl acetate for use; Coupling agent is selected titanic acid ester for use; Dispersion agent is selected organobentonite for use.
At first, add the thinner ethyl acetate at last, regulate viscosity and can make finished product coating surface treated nickel powder and the acrylic resin that is added with dispersion agent ball milling 15 minutes in ball mill.Through the test of respective volume resistivity and the computational analysis of shielding properties, capability of electromagnetic shielding can reach 38～62dB when coat-thickness 200 μ m.Sticking power can reach 1 grade by GB/T 9286-1998 test.
Embodiment 5
The technical process and the processing parameter of present embodiment are as follows:
1, batching
Micron order nickel powder 54%
Filmogen 40.5%
Chlorination polypropylene 2.3%
Coupling agent 0.5%
Dispersion agent 2.7%
2, the preparation of coupling agent solution
Coupling agent is selected titanic acid ester for use, and solvent is selected ethyl acetate for use, and the proportioning of titanic acid ester and ethyl acetate is: titanic acid ester: ethyl acetate=3.8%: 96.2%, during preparation they are mixed at normal temperatures, and stir.
3, the surface treatment of micron order nickel powder
With particle diameter is that 2 microns nickel powder is put into the coupling agent solution for preparing, and with ball mill grinding 10 minutes, removes unnecessary solvent then, 60 ℃ of oven dry down.
4, the preparation of coating
The coating preparation is carried out at normal temperatures.Film-forming resin is selected acrylic resin for use; Solvent is selected tetracol phenixin, ethyl acetate for use; Coupling agent is selected titanic acid ester for use; Dispersion agent is selected organobentonite for use.
At first, can reach the dispersive requirement, add the thinner ethyl acetate at last, regulate viscosity and can make finished product coating surface treated nickel powder and the acrylic resin that is added with dispersion agent ball milling 15 minutes in ball mill.Through the test of respective volume resistivity and the computational analysis of shielding properties, capability of electromagnetic shielding can reach 38～62dB when coat-thickness 200 μ m.Sticking power can reach 1 grade by GB/T 9286-1998 test.
Embodiment 6
The technical process and the processing parameter of present embodiment are as follows:
1, batching
Micron order nickel powder 50%
Filmogen 43%
Chlorination polypropylene 3%
Coupling agent 0.7%
Dispersion agent 3.3%
2, the preparation of coupling agent solution
Coupling agent is selected titanic acid ester for use, and solvent is selected ethyl acetate for use, and the proportioning of titanic acid ester and ethyl acetate is: titanic acid ester: ethyl acetate=3.8%: 96.2%, during preparation they are mixed at normal temperatures, and stir.
3, the surface treatment of micron order nickel powder
With particle diameter is that 2 microns nickel powder is put into the coupling agent solution for preparing, and with ball mill grinding 10 minutes, removes unnecessary solvent then, 60 ℃ of oven dry down.
4, the preparation of coating
The coating preparation is carried out at normal temperatures.Film-forming resin is selected acrylic resin for use; Solvent is selected tetracol phenixin, ethyl acetate for use; Coupling agent is selected titanic acid ester for use; Dispersion agent is selected organobentonite for use.
At first, can reach the dispersive requirement, add the thinner ethyl acetate at last, regulate viscosity and can make finished product coating surface treated nickel powder and the acrylic resin that is added with dispersion agent ball milling 15 minutes in ball mill.Through the test of respective volume resistivity and the computational analysis of shielding properties, capability of electromagnetic shielding can reach 38～62dB when coat-thickness 200 μ m.Sticking power can reach 1 grade by GB/T 9286-1998 test.
Claims (7)
1, a kind of composite electromagnetic wave shielded coating, its component comprises film-forming resin, conductive filler material, coupling agent and dispersion agent, it is characterized in that film-forming resin is the mixture of acrylic resin and Chlorinated Polypropylene III, and the weight percentage of each component is:
Conductive filler material 50～65%
Chlorinated Polypropylene III 0.5～3%
Acrylic resin 31.5～43%
Coupling agent 0.5～0.7%
Dispersion agent 2.5～3.3%.
2, a kind of composite electromagnetic wave shielded coating according to claim 1 is characterized in that described conductive filler material is the micron order nickel powder.
3, a kind of composite electromagnetic wave shielded coating according to claim 1 is characterized in that described coupling agent is a titanate coupling agent.
4, a kind of composite electromagnetic wave shielded coating according to claim 1 is characterized in that described dispersion agent is an organobentonite.
5, a kind of preparation method as composite electromagnetic wave shielded coating as described in the claim 2 is characterized in that preparation method's step is as follows
1) preparation coupling agent solution:
Coupling agent solution is stirred by coupling agent and solvent and gets final product; The proportioning of coupling agent and solvent is: coupling agent: solvent=1.7～4.8%:95.2～98.3%; Solvent is ethyl acetate, methyl acetate, butylacetate, acetone, methylethylketone or ethanol;
2) surface treatment of micron order nickel powder
The micron order nickel powder is put into coupling agent solution ball milling, the dispersion that is added with dispersion agent, filter then, dry;
3) coating preparation
With film-forming resin, the micron order nickel powder after surface treatment, dispersion agent, solvent, fully disperse, add thinner at last and regulate viscosity, promptly make coating, solvent is the double solvents of tetracol phenixin and ethyl acetate.
6, the preparation method of a kind of composite electromagnetic wave shielded coating according to claim 5 is characterized in that described coupling agent is a titanate coupling agent.
7, the preparation method of a kind of composite electromagnetic wave shielded coating according to claim 5 is characterized in that described dispersion agent is an organobentonite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100495832A CN100482753C (en) | 2006-02-24 | 2006-02-24 | Composite resin type electromagnetic wave shielding coating and its preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100495832A CN100482753C (en) | 2006-02-24 | 2006-02-24 | Composite resin type electromagnetic wave shielding coating and its preparation method |
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|---|---|
| CN1807529A CN1807529A (en) | 2006-07-26 |
| CN100482753C true CN100482753C (en) | 2009-04-29 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086338B (en) * | 2010-12-22 | 2012-12-12 | 浙江工业大学 | Vinyl ester resin carbon series conductive paint with high corrosion resistance and heat resistance and preparation method thereof |
| CN104109427B (en) * | 2014-06-23 | 2016-08-24 | 重庆华辉涂料有限公司 | A kind of PP material bumper electrostatic spraying light gray conductive primer and preparation method thereof |
| CN104341938A (en) * | 2014-10-17 | 2015-02-11 | 苏州莱特复合材料有限公司 | Conductive metal powder composite coating and preparation method thereof |
| CN106243865A (en) * | 2016-07-28 | 2016-12-21 | 苏州明轩地坪涂料有限公司 | A kind of electromagnetic screen coating |
| CN107225824A (en) * | 2017-05-31 | 2017-10-03 | 江苏精盾节能科技有限公司 | A kind of electromagnetic shielding glass and preparation method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Huanqiu Paint Group Co., Ltd. Assignor: Zhejiang University Contract record no.: 2011330000630 Denomination of invention: Composite resin type electromagnetic wave shielding coating and its preparation method Granted publication date: 20090429 License type: Exclusive License Open date: 20060726 Record date: 20110530 |
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Granted publication date: 20090429 Termination date: 20120224 |