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Epoxy resin electric conduction adhesive and preparation method thereof

An epoxy resin and adhesive technology, applied in epoxy resin glue, conductive adhesive, adhesive and other directions, can solve the problems of silver powder easily oxidized and conductive performance, decline, etc., to improve electrical conductivity, improve electrical conductivity, and improve electrical conductivity Effect

Inactive Publication Date: 2014-04-02
昆山珍实复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing epoxy resin conductive adhesives rely solely on filling flaky silver powder to obtain electrical conductivity, and silver powder is easily oxidized during use and curing, resulting in a decrease in electrical conductivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] An epoxy resin conductive adhesive comprises the following components in parts by weight: 50 parts of epoxy resin, 10 parts of nitrile rubber, 10 parts of curing agent, 2 parts of curing accelerator, 0.5 part of coupling agent, 15 parts of diluent , 10 parts of calcium carbonate filler and 15 parts of graphene-modified flake aluminum powder.

[0017] The epoxy resin is a bisphenol A type epoxy resin.

[0018] Nitrile rubber is hydroxyl-terminated nitrile rubber.

[0019] The curing agent is dicyandiamide and acid anhydride.

[0020] The curing accelerator is imidazole.

[0021] Coupling agents include γ-glycidoxypropyltrimethoxysilane.

[0022] Reactive diluents include ethanol.

[0023] The graphene-modified flaky aluminum powder is a flaky aluminum powder whose surface is evenly coated with graphene.

[0024] The process of using graphene to pretreat flake aluminum powder includes: graphene: deionized water: flake aluminum powder is mixed in a ratio of 4:90:38, a...

Embodiment 2

[0027] An epoxy resin conductive adhesive comprises the following components in parts by weight: 70 parts of epoxy resin, 30 parts of nitrile rubber, 20 parts of curing agent, 8 parts of curing accelerator, 1.5 parts of coupling agent, 35 parts of diluent , 20 parts of calcium carbonate filler and 35 parts of graphene-modified flake aluminum powder.

[0028] The epoxy resin is a bisphenol A type epoxy resin.

[0029] Nitrile rubber is hydroxyl-terminated nitrile rubber.

[0030] The curing agent is dicyandiamide and acid anhydride.

[0031] The curing accelerator is imidazole.

[0032] Coupling agents include γ-glycidoxypropyltrimethoxysilane.

[0033] Reactive diluents include ethanol.

[0034] The graphene-modified flaky aluminum powder is a flaky aluminum powder whose surface is evenly coated with graphene.

[0035] The process of using graphene to pretreat flake aluminum powder includes: graphene: deionized water: flake aluminum powder is mixed in a ratio of 4:90:38, ...

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PUM

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Abstract

The present invention discloses an epoxy resin electric conduction adhesive and a preparation method thereof. The preparation method comprises: preparing graphene-modified flaky aluminum powder; sequentially adding 50-70 parts by weight of an epoxy resin, 10-30 parts by weight of a nitrile butadiene rubber, 10-20 parts by weight of a curing agent, 2-8 parts by weight of a curing accelerator, 0.5-1.5 parts by weight of a coupling agent, 15-35 parts by weight of a diluent, 10-20 parts by weight of a calcium carbonate filler and 15-35 parts by weight of the graphene-modified flaky aluminum powder to a double planet power mixing stirrer, carrying out mechanical stirring for 1-2 h under a vacuum degree of -0.08 to -0.1 MPa at a rotation speed of 300-1000 r / min and a revolution speed of 5-15 r / min, discharging the material, and storing at a low temperature of 0-8 DEG C after discharging the material. The epoxy resin electric conduction adhesive has characteristics of good toughness and high conductivity.

Description

Technical field: [0001] The invention relates to the technical field of epoxy resin and a preparation method thereof, in particular to an epoxy resin conductive adhesive and a preparation method thereof. Background technique: [0002] With the development of electronic products, the issue of selecting electronic packaging materials becomes more important. Epoxy resin conductive adhesive is the most common adhesive material, which requires good insulation and conductivity. The structure of graphene is very stable, and this stable lattice structure makes carbon atoms have excellent electrical conductivity. Existing epoxy resin conductive adhesives rely solely on filling flake silver powder to obtain electrical conductivity, and the silver powder is easily oxidized during use and curing, resulting in a decrease in electrical conductivity. Therefore, how to obtain an epoxy resin adhesive with good electrical conductivity is a current problem. Invention content: [0003] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J109/02C09J9/02C09J11/04C09J11/06C09C1/64C09C3/06
Inventor 黄文成
Owner 昆山珍实复合材料有限公司
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