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Graphene composite polyimide resin polymer as well as preparation and application thereof

A technology of composite polyimide and polyimide resin, which is applied in the polymer field of graphene composite polyimide resin, can solve the problems of unsatisfactory performance of the final composite material, cumbersome preparation, large pollution, etc., and achieve microscopic Stable network structure, uniform surface layer, good antistatic effect

Active Publication Date: 2018-03-23
JIANGSU YABAO INSULATION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there have been a large number of reports on graphene-modified polyimide composite materials, but there are still problems such as cumbersome preparation, large pollution, and unsatisfactory performance of the final composite material. Study on Modified Compound of Imine

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A polymer of graphene composite polyimide resin is characterized in that it comprises the following percentage components: graphene 1%, titanium dioxide 2%, silica sol 0.5%, fluorine-containing acrylate copolymer 4%, The balance of the polyimide resin also includes 1% of composite filler, which is nano-magnesia whisker and nano-silicon oxide with a mass ratio of 1:1.

[0027] The polymer of graphene composite polyimide resin, preparation steps are as follows:

[0028] 1) Weigh the raw materials according to the weight ratio, slowly heat the polyimide resin to 60°C, then add fluorine-containing acrylate copolymer to it, first stir rapidly at 150rpm for 15min, then stir slowly at constant temperature at 50rpm for 0.5h, Then lower the temperature to 30±5°C, ultrasonically treat at 45KHz for 10-12min, and then keep it for 3h to obtain mixture 1;

[0029] 2) Add graphene to mixture 1 in 5 times under normal temperature conditions, and maintain 28KHz ultrasonic treatment dur...

Embodiment 2

[0034] A polymer of graphene composite polyimide resin is characterized in that it comprises the following percentage components: 0.5% graphene, 3% titanium dioxide, 2% silica sol, 2% fluorine-containing acrylate copolymer, The balance of polyimide resin.

[0035] The polymer of graphene composite polyimide resin, preparation steps are as follows:

[0036] 1) Weigh the raw materials according to the weight ratio, slowly heat the polyimide resin to 80°C, then add fluorine-containing acrylate copolymer to it, first stir rapidly at 160rpm for 10min, then stir slowly at constant temperature at 50rpm for 1h, then Cool down to 30±5°C, ultrasonically treat at 46KHz for 10-12min, then keep warm for 2h to obtain mixture 1;

[0037] 2) Add graphene to mixture 1 in 5 times under normal temperature conditions, and maintain 28KHz ultrasonic treatment during the addition process. The whole addition process is not less than 20min. 5 times, mixture 2 was obtained;

[0038] 3) Grind the tit...

Embodiment 3

[0042]A polymer of graphene composite polyimide resin is characterized in that it comprises the following percentage components: 0.2% graphene, 1% titanium dioxide, 4% silica sol, 3% fluorine-containing acrylate copolymer, The balance of polyimide resin also includes 1.5% of composite filler, which is nano-magnesia whisker and nano-silicon oxide with a mass ratio of 1:2.

[0043] The polymer of graphene composite polyimide resin, preparation steps are as follows:

[0044] 1) Weigh the raw materials according to the weight ratio, slowly heat the polyimide resin to 80°C, then add fluorine-containing acrylate copolymer to it, first stir rapidly at 150rpm for 15min, then stir slowly at constant temperature at 30rpm for 0.5h, Then lower the temperature to 30±5°C, ultrasonically treat at 48KHz for 10-12min, and then keep it for 4h to obtain mixture 1;

[0045] 2) Add graphene to mixture 1 in 5 times under normal temperature conditions, and maintain 28KHz ultrasonic treatment during...

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Abstract

The invention provides a graphene composite polyimide resin polymer as well as preparation and application thereof. The polymer comprises the following components in percentage by weight: 0.2%-1.5% ofgraphene, 1%-5% of titanium dioxide, 0.5%-6% of silica sol, 2%-10% of a fluorine-containing acrylate copolymer and the balance of polyimide resin. The polymer prepared by reasonable component proportion and process improvement has high conductivity and stable micro-network structure, mechanical property and electrical property are obviously improved through chemical modification and combination among the components, and the polymer has uniform and flat surface layer and is high in conductive effect, good in antistatic property and high in comprehensive mechanical strength when used for the polyimide conductive film.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polymer of graphene composite polyimide resin and its preparation and application. Background technique [0002] Polymer conductive material, is a kind of conductive function, the conductivity is 10 -6 Polymer materials above S / m. According to the classification of electrical properties, it can be divided into: insulator, antistatic body, conductor, and high conductor. Generally expressed by volume resistivity, volume resistivity is 10 10 Anything above Ω·cm is called an insulator; the volume resistivity is 10 4 -10 9 Those in the range of Ω·cm are called semiconductors or antistatic bodies; the volume resistivity is 10 4 Those below Ω·cm are called conductors; those with volume resistivity below 100Ω·cm or even lower are called high conductors. [0003] At present, the vigorous development of the aerospace industry has an increasingly urgent demand for polymer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08L33/14C08K13/04C08K3/04C08K3/22C08K3/36C08K7/08
CPCC08K2003/2241C08K2201/001C08K2201/011C08K2201/014C08L79/08C08L2203/16C08L33/14C08K13/04C08K3/04C08K3/22C08K3/36C08K7/08
Inventor 徐伟伟王勇祁晓东姜新陈晨
Owner JIANGSU YABAO INSULATION MATERIAL
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