Unlock instant, AI-driven research and patent intelligence for your innovation.

Epoxy conductive silver adhesive with imidazole nickel salt serving as accelerant and preparation method of epoxy conductive silver adhesive

A technology of conductive silver glue and accelerator, which is applied in the direction of epoxy resin glue, conductive adhesive, adhesive, etc., can solve the problem of inability to store, unsatisfactory storage period, and rare reports of single-component epoxy conductive glue, etc. problem, to achieve the effect of excellent electrical performance

Inactive Publication Date: 2013-01-09
XIAMEN UNIV
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many studies on conductive adhesives in China, but there are few reports on single-component epoxy conductive adhesives that can be stored at room temperature.
[0005] Hao Weixiao disclosed a weather-resistant epoxy conductive adhesive in Chinese patent CN1560169A, which improves the weather resistance of the conductive adhesive, but the storage period is not very ideal
[0006] Xu Mingyong and others disclosed a single-component room temperature curing flexible epoxy conductive adhesive in Chinese patent CN1632032A, which can be cured after 24 hours at room temperature and cannot be stored.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Epoxy conductive silver adhesive with imidazole nickel salt serving as accelerant and preparation method of epoxy conductive silver adhesive
  • Epoxy conductive silver adhesive with imidazole nickel salt serving as accelerant and preparation method of epoxy conductive silver adhesive
  • Epoxy conductive silver adhesive with imidazole nickel salt serving as accelerant and preparation method of epoxy conductive silver adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Described a kind of epoxy conductive silver glue with imidazole nickel salt as promotor is prepared according to the following mass ratio:

[0022]

[0023] Mix 100 parts of bisphenol A epoxy resin E-54 and 25 parts of phenyl glycidyl ether in a mass ratio, grind and stir evenly; add 5 parts of dicyandiamide and 0.2 parts of imidazole nickel salt and grind and stir for 10 minutes to obtain Resin matrix; then add 390 parts of flaky silver powder to the resin matrix in 3 times, grind and stir for more than 30 minutes to obtain epoxy conductive adhesive.

[0024] After the prepared conductive adhesive is cured at 150°C for 30 minutes, the volume resistivity is 9×10 -4 Ω·㎝, the shear strength is 10.2MPa, and the performance of the product does not change much after being stored at room temperature for 3 months.

Embodiment 2

[0026] Described a kind of epoxy conductive silver glue with imidazole nickel salt as promotor is prepared according to the following mass ratio:

[0027]

[0028] Mix 100 parts of bisphenol A epoxy resin E-54 and 25 parts of phenyl glycidyl ether in a mass ratio, grind and stir evenly; add 7 parts of dicyandiamide and 0.2 parts of imidazole nickel salt and grind and stir for 10 minutes to obtain Resin matrix; then add 390 parts of flaky silver powder to the resin matrix in 3 times, grind and stir for more than 30 minutes to obtain epoxy conductive adhesive.

[0029] After the prepared conductive adhesive is cured at 150°C for 30 minutes, the volume resistivity is 10.6×10 -4 Ω·cm, the shear strength is 12.1MPa, and the performance of the product does not change much after being stored at room temperature for 3 months.

Embodiment 3

[0031] Described a kind of epoxy conductive silver glue with imidazole nickel salt as promotor is prepared according to the following mass ratio:

[0032]

[0033] Mix 50 parts of bisphenol A epoxy resin E-54, 50 parts of bisphenol F epoxy resin, and 25 parts of phenyl glycidyl ether, grind and stir evenly; add 5 parts of dicyandiamide, 0.2 1 part of imidazole nickel salt was ground and stirred for 10 minutes to obtain a resin matrix; then 390 parts of flaky silver powder were added to the resin matrix in 3 times, and ground and stirred for more than 30 minutes to obtain an epoxy conductive adhesive. 4

[0034] After the prepared conductive adhesive was cured at 150°C for 30 minutes, the volume resistivity was 8.9×10 -4 Ω·㎝, the shear strength is 9.6MPa, and the performance of the product does not change much after being stored at room temperature for 3 months.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
electrical resistivityaaaaaaaaaa
shear strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses epoxy conductive silver adhesive with imidazole nickel salt serving as an accelerant and a preparation method of the epoxy conductive silver adhesive and relates to conductive silver adhesive. The imidazole nickel salt serves as the accelerant, the epoxy conductive silver adhesive can be stored and transported at the normal temperature, the inconvenience of prior conductive adhesive in storage and transport is overcome, and the cost of the transport and the storage is reduced. The conductive silver adhesive comprises, by mass, 100 of epoxide resin, 17-30 of diluters, 4-7 of curing agents, 0.2-0.7 of accelerants and 300-500 of silver powder. The preparation method comprises steps of mixing the epoxide resin and the diluters, adding the curing agents and the accelerants after grinding, grinding, obtaining a resin matrix, adding the silver powder to the resin matrix, and preparing the epoxy conductive silver adhesive with the imidazole nickel salt serving as the accelerant after grinding. The epoxy conductive silver adhesive is silvery paste.

Description

technical field [0001] The invention relates to a conductive silver glue, in particular to an epoxy conductive silver glue with imidazole nickel salt as an accelerator and a preparation method thereof. Background technique [0002] With the increasingly widespread application of electronic products in modern society, various types of conductive connections are required in the production process. The most widely used conductive connection material is lead-tin alloy solder, which has the characteristics of low cost and high strength. However, with the continuous progress of the electronics industry, the development of contemporary electronic assembly technology in the direction of miniaturization and high density, and the continuous development of the international lead-free trend, lead-tin alloy solder can no longer meet the increasing performance and environmental protection requirements of electronic products. As a lead-free connecting material, conductive adhesive can effe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/02C09J9/02C09J11/06
Inventor 邹友思黄莺洪阿乐吕耕敏蒲珏文尚明屹郑延清寇亮亮廖毅彬林彩凤
Owner XIAMEN UNIV