Method for preparing graphene conductive polymer conductive adhesive and graphene conductive polymer conductive adhesive

A conductive polymer, graphene technology, applied in aldehyde/ketone condensation polymer adhesives, conductive materials dispersed in non-conductive inorganic materials, conductive adhesives, etc., can solve the problem of high environmental pollution and conductive fillers Expensive price, complex preparation process and other problems, to achieve the effect of high electrical conductivity, guaranteed electrical conductivity, and uniform dispersion

Active Publication Date: 2014-12-03
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a preparation method of graphene conductive polymer conductive glue, which uses graphene and conductive polymer monomers as raw materials to carry out in-situ polymerization to prepare graphene conductive polymer composite materials, and the graphene conductive Polymer composite material is used as a conductive filler, mixed with epoxy resin, curing agent, and accelerator to prepare a new type of graphene conductive polymer conductive adhesive, which overcomes the expensive conductive filler in traditional conductive adhesives, complicated preparation process, and environmental impact. Disadvantages such as high pollution

Method used

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  • Method for preparing graphene conductive polymer conductive adhesive and graphene conductive polymer conductive adhesive
  • Method for preparing graphene conductive polymer conductive adhesive and graphene conductive polymer conductive adhesive
  • Method for preparing graphene conductive polymer conductive adhesive and graphene conductive polymer conductive adhesive

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preparation example Construction

[0040] see figure 1 , the invention provides a kind of graphene conductive polymer conductive glue preparation method, it comprises the following steps:

[0041] Step 1, providing graphene powder and conductive polymer monomer;

[0042] Step 2, provide solvent, add described graphene powder in described solvent, obtain graphene dispersion liquid by methods such as stirring, ultrasonic;

[0043] Step 3, adding the conductive polymer monomer into the graphene dispersion, and obtaining a mixed solution of uniformly dispersed graphene and conductive polymer monomer by methods such as stirring and ultrasonication;

[0044] Step 4, throwing an initiator into the mixed solution of the graphene and the conductive polymer monomer, so that the conductive polymer monomer undergoes an in-situ polymerization reaction on the graphene surface to obtain a graphene conductive polymer composite material preparation solution;

[0045] Step 5, by filtering, drying, etc., removing the solvent and ...

no. 1 example

[0063] The first embodiment of the preparation method of graphene conductive polymer conductive adhesive of the present invention comprises the following steps:

[0064] Step 1, providing graphene powder and conductive polymer monomer.

[0065] The number of layers of the graphene powder is less than 10, the size is 1-10um, and the electrical conductivity is greater than 1000S / m. The conductive polymer monomer is selected from aniline monomer.

[0066] Step 2. Disperse the graphene powder in a mixed solution of ethanol and water with a volume ratio of 1:1, and obtain a 0.1 mg / mL graphene dispersion by stirring, ultrasonication and other methods.

[0067] Step 3, adding aniline monomer into the graphene dispersion, and obtaining a uniformly dispersed mixed solution of graphene and aniline monomer by means of stirring, ultrasonication and the like. Preferably, the mass ratio of graphene to aniline monomer is 1:30.

[0068] Step 4. Configure 1mol / L HCl-dissolved ammonium persu...

no. 2 example

[0073] The second embodiment of the preparation method of graphene conductive polymer conductive adhesive of the present invention comprises the following steps:

[0074] Step 1, providing graphene powder and conductive polymer monomer.

[0075] The number of layers of the graphene powder is less than 10, the size is 1-10um, and the electrical conductivity is greater than 1000S / m. The conductive polymer monomer is pyrrole monomer.

[0076] Step 2, disperse the graphene powder in isopropanol, and obtain a 0.1 mg / mL graphene dispersion by stirring, ultrasonication and other methods.

[0077] Step 3, adding pyrrole monomer into the graphene dispersion, and obtaining a uniformly dispersed mixed solution of graphene and pyrrole monomer by stirring, ultrasonication and other methods. Preferably, the mass ratio of graphene to pyrrole monomer is 1:1.

[0078] Step 4. Configure 0.4mol / L ferric chloride alcohol solution as an initiator, and drop the ferric chloride alcohol solution i...

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Abstract

The invention provides a method for preparing a graphene conductive polymer conductive adhesive and the graphene conductive polymer conductive adhesive. According to the method, a graphene conductive polymer is adopted as conductive filler, and the disadvantages that the content of the conductive filler in the traditional conductive adhesive is too high, the traditional conductive adhesive is expensive, the preparation process is complicated, the pollution to the environment is high and the like are solved. The graphene conductive polymer is prepared by virtue of an in-situ polymerization method and thus the conductive polymer and the graphene are more evenly dispersed, and the prepared graphene conductive polymer has high stability and the electrical conductivity is ensured. In the preparation process of the graphene conductive polymer, by virtue of adjusting the raw material ratio of the conductive polymer monomers and the graphene, the control on the size of the graphene conductive polymer is achieved. The graphene conductive polymer conductive adhesive prepared by the method disclosed by the invention has the advantages of high electrical conductivity, environment friendliness and the like and can be applied in thin film transistor liquid crystal displays to replace a conductive gold adhesive or a conductive silver adhesive and can be also applied in ultra-fine circuit connection.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a preparation method of a graphene conductive polymer conductive glue and the graphene conductive polymer conductive glue. Background technique [0002] Conductive adhesive is an important bridge to realize the connection of micro-circuits. It is mainly composed of conductive materials, resin matrix, dispersant, curing agent, accelerator, etc. Currently, the commonly used fillers include: silver and gold balls, but conductive silver adhesives are expensive, and The silver particles in the conductive adhesive are easily oxidized, so they are gradually replaced by gold balls. However, the process of preparing conductive gold balls by electroless plating is complicated in industry. Most of the gold salts used in the gold plating process are cyanides, which are very toxic. Therefore, low-cost new conductive fillers have become a research hotspot. [0003] Graphene is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J179/02C09J179/06C09J161/12C09J9/02C08G73/02C08G73/06C08G61/12C08K3/04
CPCC09J163/00C08G59/245C08G59/42C08G59/686C08K2201/011C08K3/042H01B1/24C08K3/04C08J5/18
Inventor 张霞李泳锐陈雅惠
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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