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Conductive coating based on noble-metal-loaded polymer nanoparticle and preparation method of conductive coating

A technology of nano-microspheres and conductive coatings, applied in conductive coatings, epoxy resin coatings, coatings, etc., can solve the problems of decreased conductive performance, further improvement of dispersion uniformity and stability, and easy migration.

Active Publication Date: 2015-11-11
XIAMEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these coatings have good electrical conductivity and adhesion, adding metal powder directly to the matrix resin is prone to phase separation, and the metal powder is prone to migration in the conductive coating, resulting in a decrease in electrical conductivity. Therefore, inorganic conductive fillers such as metal powder are used in The dispersion uniformity and stability in the matrix resin still need to be further improved

Method used

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  • Conductive coating based on noble-metal-loaded polymer nanoparticle and preparation method of conductive coating
  • Conductive coating based on noble-metal-loaded polymer nanoparticle and preparation method of conductive coating
  • Conductive coating based on noble-metal-loaded polymer nanoparticle and preparation method of conductive coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation of gold-loaded polymer nanospheres is as follows:

[0030] 1) Add 15ml of styrene, 0.5ml of glycidyl methacrylate (GMA), 0.5ml of N,N-dimethylaminoethyl methacrylate (DMAEMA), and 500ml of deionized water into the reaction vessel, under nitrogen protection Stir and heat up to 70°C;

[0031] 2) Add 0.2 g of initiator to the reaction system after purging with nitrogen for 30 minutes, and continue to stir and react for 24 hours under the protection of nitrogen to obtain a polymer nanosphere solution;

[0032] 3) Centrifuge the polymer nanosphere solution obtained in step 2), wash with water and ethanol for 3 to 5 times, and dry in vacuum for 24 hours;

[0033] 4) Disperse 30g of polymer nanospheres in 1L of ethanol, add 50ml of chloroauric acid solution, and dropwise add 50ml of sodium borohydride solution under stirring, react for 12h, wash with ethanol for 3 times, and dry in vacuum for 24h to obtain loaded gold Polymer Nanospheres.

[0034] The conduc...

Embodiment 2

[0038] The preparation of silver-loaded polymer nanospheres is as follows:

[0039] 1) Add 15ml of styrene, 0.7ml of glycidyl methacrylate (GMA), 0.7ml of N,N-dimethylaminoethyl methacrylate (DMAEMA), and 500ml of deionized water into the reaction vessel, under nitrogen protection Stir and heat up to 70°C;

[0040] 2) Add 0.5 g of initiator AIBN to the reaction system after purging with nitrogen for 30 minutes, and continue to stir and react for 24 hours under the protection of nitrogen to obtain a polymer nanosphere solution;

[0041] 3) centrifuging the polymer nanosphere solution obtained in step 2), washing with water and ethanol three times respectively, and drying in vacuum for 24 hours;

[0042] 4) Disperse 40g of polymer nanospheres in 1L of ethanol, add 40ml of silver nitrate solution, and dropwise add 30ml of sodium borohydride solution under stirring, react for 12h, wash with ethanol for 3 times, and dry in vacuum for 24h to obtain silver-loaded polymer nanosphere...

Embodiment 3

[0046] The preparation of gold-loaded polymer nanospheres is as follows:

[0047]1) Add 25ml of styrene, 1ml of glycidyl methacrylate (GMA), 1ml of N,N-dimethylaminoethyl methacrylate (DMAEMA), and 500ml of deionized water into the reaction vessel, stir and Heat up to 70°C;

[0048] 2) Add 1.0 g of initiator AIBN to the reaction system after nitrogen purging for 30 minutes, and continue to stir and react for 24 hours under nitrogen protection to obtain a polymer nanosphere solution;

[0049] 3) centrifuging the polymer nanosphere solution obtained in step 2), washing with water and ethanol three times respectively, and drying in vacuum for 24 hours;

[0050] 4) Disperse 20g of polymer nanospheres in 1L of ethanol, add 30ml of chloroauric acid solution, and dropwise add 30ml of sodium borohydride solution under stirring, react for 12h, wash with ethanol for 3 times, and vacuum dry for 24h to obtain loaded gold Polymer Nanospheres.

[0051] The conductive coating was prepared...

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Abstract

The invention relates to a conductive coating and discloses a conductive coating based on a noble-metal-loaded polymer nanoparticle and a preparation method of the conductive coating. The conductive coating comprises, by mass: 80-120 of an epoxy resin, 10-30 of butyl acetate, 0.5-5 of a silane coupling agent, 20-50 of the noble-metal-loaded polymer nanoparticle, 20-40 of conductive graphite powder, and 35-60 of a curing agent. The preparation method comprises: solving the noble-metal-loaded polymer nanoparticle, the silane coupling agent, the conductive graphite powder, and the curing agent in sequence into butyl acetate; performing stirring for 0.5-1h to obtain an emulsion; adding the epoxy resin into the emulsion under untrasonic oscillation; and performing stirring for 0.5-2h till the mixture is uniform to obtain the conductive coating based on the noble-metal-loaded polymer nanoparticle. According to the invention, the conductive noble metal nanoparticle is loaded on the polymer nanoparticle, so that stability of the metal nanoparticle in a matrix resin is improved, and the metal nanoparticle isn't liable to move. Moreover, the conductivity of the conductive coating can be varied by changing the loading capacity of the noble metal nanoparticle.

Description

technical field [0001] The invention belongs to the field of conductive coatings, in particular to a conductive coating based on loaded precious metal polymer nano microspheres and a preparation method thereof. Background technique [0002] Conductive coatings refer to functional coatings that have the ability to conduct electricity and dissipate static charges. With the rapid development of modern science and technology, especially information and electronic technology, nanocomposite conductive coatings have become a special functional coating that plays a very important role. Its development is closely related to modern frontier research fields. So far, about It has a development history of half a century. It has the advantages of simple equipment, convenient construction, low cost, and can be coated on surfaces with various complex shapes. In recent decades, it has been very important in the fields of electronics industry, construction industry, aerospace, petrochemical ...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/24C08F212/08C08F220/32C08F220/34
Inventor 戴李宗毛杰林敬忠谢鸿辉袁丛辉陈国荣
Owner XIAMEN UNIV
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