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Activated graphene dispersion liquid, method for preparing same and application of activated graphene dispersion liquid to conductive thin films

A technology of graphene dispersion liquid and conductive film, which is applied in the field of preparation of activated graphene dispersion liquid, can solve the problems of low electrical conductivity and poor stability of polyaniline, and achieve improved composite stability strength, good heat resistance stability, Good thermal stability effect

Inactive Publication Date: 2018-09-14
TAICANG MIX MACHINERY EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the low conductivity of polyaniline, post-processing, and poor stability have greatly affected its popularization and application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Preparation of activated graphene dispersion

[0027] In parts by weight, the following raw materials were weighed: 40 parts of graphene, 0.2 parts of polysorbate, 9 parts of potassium permanganate, 4 parts of chlorosulfonic acid, 1 part of barium naphthenate, and 120 parts of dimethylformamide;

[0028] Concrete preparation method step is:

[0029] (1) Take barium naphthenate, add it to dimethylformamide, stir evenly, and get amide solution;

[0030] (2) Take graphene, add it to 98% sulfuric acid solution that is 30 times its weight, ultrasonicate for 10 hours, add potassium permanganate, raise the temperature to 70°C, keep stirring for 2 hours, add chlorosulfonic acid, and stir to normal temperature, filter, wash the precipitate with water, and dry at normal temperature to obtain activated graphene;

[0031] (3) Take the above-mentioned activated graphene, add it to the amide solution, add polysorbate, and keep stirring at 50° C. for 30 minutes to obtain the grap...

Embodiment 2

[0040] 1) Preparation of activated graphene dispersion

[0041] In parts by weight, the following raw materials were weighed: 30 parts of graphene, 0.1 part of polysorbate, 6 parts of potassium permanganate, 2 parts of chlorosulfonic acid, 0.7 part of barium naphthenate, and 100 parts of dimethylformamide;

[0042] Concrete preparation method step is:

[0043] (1) Take barium naphthenate, add it to dimethylformamide, stir evenly, and get amide solution;

[0044] (2) Take graphene, add it to 96% sulfuric acid solution that is 20 times its weight, ultrasonicate for 6 hours, add potassium permanganate, raise the temperature to 65°C, keep stirring for 1 hour, add chlorosulfonic acid, and stir to normal temperature, filter, wash the precipitate with water, and dry at normal temperature to obtain activated graphene;

[0045] (3) Take the above-mentioned activated graphene, add it to the amide solution, add polysorbate, and keep stirring at 40° C. for 20 minutes to obtain the graph...

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Abstract

The invention discloses activated graphene dispersion liquid, a method for preparing the same and application of the activated graphene dispersion liquid to conductive thin films. The activated graphene dispersion liquid comprises, by weight, 30-40 parts of graphene, 0.1-0.2 part of polysorbate, 6-9 parts of potassium permanganate, 2-4 parts of chlorosulfonic acid, 0.7-1 part of barium naphthenateand 100-120 parts of dimethylformamide. The activated graphene dispersion liquid, the method and the application have the advantages that phosphorus trichloride is used as a modifier, is hydrolyzed and then is doped in aniline monomers, and accordingly polyaniline is excellent in conductivity; the polyaniline and bisphenol A are blended and esterified, obtained bisphenol A ester is excellent in heat-resistant stability, and accordingly the heat-resistant strength of the thin films which are finished products can be improved; the thin films are good in conductive stability and heat-resistant stability, high in mechanical strength and excellent in comprehensive performance.

Description

technical field [0001] The invention belongs to the field of graphene materials, in particular to a method for preparing an activated graphene dispersion. Background technique [0002] Graphene is a material with a monoatomic layer structure composed of carbon atoms in a hexagonal honeycomb lattice. It has excellent electrical, thermal and mechanical properties and can be widely used in various fields. However, graphene, as a two-dimensional nanomaterial, is very easy to agglomerate, and graphene re-transforms into a graphite structure after agglomeration, making it difficult to exert its unique properties. Therefore, how to uniformly disperse graphene is an urgent problem to be solved in current graphene applications. [0003] As one of the conductive polymer materials, polyaniline is considered to be the structural conductive polymer with the most commercial application value because of its good chemical stability, good weather resistance, cheap and easy-to-obtain raw mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/02C08K9/02C08K3/04C08K3/32C08J5/18
CPCC08J5/18C08J2379/02C08K3/042C08K3/32C08K9/02
Inventor 杨阳张宇
Owner TAICANG MIX MACHINERY EQUIP CO LTD
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