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Low-temperature setting zinc oxide conductive silver paste and preparing method thereof

A technology of conductive silver paste and zinc oxide, which is applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc., and can solve problems such as poor solder resistance, poor sintering performance, and low adhesion , to achieve the effect of low production cost, excellent electrical conductivity and low curing temperature

Inactive Publication Date: 2014-11-12
滁州恒恩光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The characteristics that conductive silver paste needs to have are: good conductivity (antistatic property), strong adhesion, good printing adaptability and excellent solvent resistance. However, the existing conductive silver paste on the market has many shortcomings, not only containing lead , cadmium, etc. and are toxic, pollute the environment, and when used on conductive substrates, the adhesion is low, the soldering resistance is not good, and the sintering performance is poor

Method used

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Examples

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Embodiment Construction

[0012] The low-temperature curing zinc oxide conductive silver paste is characterized in that it is made of the following raw materials in parts by weight: silver powder 37, nanometer copper powder 5, zinc oxide 2, titanium dioxide 3, tungsten trioxide 3.4, etherified guar Bean gum 2.1, sodium alginate 2.7, epoxy octyl stearate 3, glycerin 4, dimethyl nylon acid 2, additives 30.

[0013] The auxiliary agent is made of the following raw materials in parts by weight: silicon dioxide 1.5, zinc oxide 4, nitrocellulose 1.9, hydrogenated castor oil 0.3, stearic acid 0.4, organosiloxane 0.1, turpentyl alcohol 16, butyl soluble anhydride Acetate 13 is prepared by putting silicon dioxide and zinc oxide into a calciner and calcining at 520-610°C for 1-2 hours, taking it out and cooling to room temperature, adding nitrocellulose and grinding for 20-40 minutes; dissolving butyl Anhydride acetate, turpentyl alcohol, and organosiloxane were stirred and mixed, reacted at 140-180°C for 2-3 ho...

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Abstract

The invention discloses a low-temperature setting zinc oxide conductive silver paste which is characterized by comprising, by weight, 35-45 parts of silver powder, 5-8 parts of nano-copper powder, 2-4 parts of zinc oxide, 1-3 parts of titanium dioxide, 1.2-3.4 parts of tungsten trioxide, 2.1-3.6 parts of etherified guar gum, 1.2-2.7 parts ofsodium alga acid, 3-6 parts of epoxy ethylhexyl stearate, 4-6 parts of glycerinum, 2-4 parts of dimethyl nylon acid, and 30-40 parts of auxiliaries. Compared with the prior art, the conductive silver paste has the advantages of being low in setting temperature, excellent in conductive performance, not prone to disengagement, good in weather resistance, low in production cost and the like.

Description

technical field [0001] The invention relates to the field of conductive silver paste, in particular to a low-temperature curing zinc oxide conductive silver paste and a preparation method thereof. Background technique [0002] Conductive silver paste refers to the silver paste printed on the conductive substrate to make it have the ability to conduct current and eliminate the accumulated static charge. It is generally printed on non-conductive substrates such as plastic, glass, ceramics or cardboard. It is made of conductive Filler, binder, solvent and additive composition. The characteristics that conductive silver paste needs to have are: good conductivity (antistatic property), strong adhesion, good printing adaptability and excellent solvent resistance. However, the existing conductive silver paste on the market has many shortcomings, not only containing lead , cadmium, etc., are toxic, pollute the environment, and when used on conductive substrates, have low adhesion, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01B13/00
Inventor 匡民陈龙
Owner 滁州恒恩光电科技有限公司
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