Low-temperature conductive silver paste and preparation method thereof
A conductive silver paste, low temperature technology, applied in cable/conductor manufacturing, conductive layer on insulating carrier, conductive material dispersed in non-conductive inorganic materials, etc., can solve the problems of high cost and high resistance of conductive silver paste, Achieve good strength, low resistance, good matching effect
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[0035] Example 1:
[0036] A low-temperature conductive silver paste for membrane switches, the silver paste includes the following components by weight percentage:
[0037] Silver powder 45%
[0038] Additive bismuth oxide 6%
[0039] Polymer resin vinyl chloride vinegar 6.2%
[0040] Polymer resin polyester 6.2%
[0041] Solvent DBE 34%
[0042] Solvent isophorone 2.6%
[0043] DBE is a mixture of three dibasic acid esters: dimethyl succinate CH3OOC(CH2)2COOCH3(10-15%), dimethyl glutarate CH3OOC(CH2)3COOCH3(55-56%) and butyl Dimethyl diacid CH3OOC(CH2)4COOCH (15-25%) is a combination of three solvents. DBE is a non-toxic, colorless and transparent liquid with a light ester aroma and super solubility.
[0044] The manufacturing method of the conductive silver paste for the membrane switch includes the following process steps:
[0045] a. Weigh and mix the solvent DBE, isophorone, and polymer resin by weight percentage to obtain an organic carrier;
[0046] b. Mix the silver powder and addit...
Example Embodiment
[0051] Example 2:
[0052] A low-temperature conductive silver paste for membrane switches, the silver paste includes the following components by weight percentage:
[0053] Silver powder 55%
[0054] Additive bismuth oxide 1.2%
[0055] Polymer resin vinyl chloride vinegar 5.0%
[0056] Polymer resin polyester 5.0%
[0057] Solvent DBE 31.5%
[0058] Solvent isophorone 2.3%
[0059] The preparation method is as in Example 1.
Example Embodiment
[0060] Example 3:
[0061] A low-temperature conductive silver paste for membrane switches, the silver paste includes the following components by weight percentage:
[0062] Silver powder 60%
[0063] Additive bismuth oxide 1.0%
[0064] Polymer resin vinyl chloride vinegar 4.5%
[0065] Polymer resin polyester 4.5%
[0066] Solvent DBE 28%
[0067] Solvent isophorone 2%
[0068] The preparation method is as in Example 1.
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