Conductive silver paste for membrane switch and preparation method thereof
A technology of conductive silver paste and membrane switch, which is applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc., which can solve the problems of poor adhesion, bending resistance, shortened service life, and poor conductivity And other problems, to achieve good adhesion, long storage time, good stability
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Embodiment 1
[0032] A kind of conductive silver paste for membrane switch, the preparation method of described conductive silver paste is:
[0033] (1) Weigh 5g of resin 5703 and 30g of dimethyl nylon acid into a three-necked flask, raise the temperature to 80°C, stir for 6 hours at a stirring speed of 300r / min, and pour it into a closed container after the resin is completely dissolved Reduce to normal temperature for standby;
[0034] (2) In the fume hood, add the resin solution prepared in step (1) into the container, and at the same time add 12.7g of dimethyl nylon acid, 1g of curing agent GX01, 0.5g of auxiliary agent BYK-110 and 0.8g The thixotropic agent N-20 is mixed uniformly at a speed of 800r / min using a high-speed disperser;
[0035] (3) Add 50g of silver powder to the mixture obtained in step (2), use a high-speed disperser to mix evenly at a speed of 400r / min, and then grind with a three-roll machine. Three-roll machine, carry out fine rolling 6 times, the detection finenes...
Embodiment 2
[0039] A kind of conductive silver paste for membrane switch, the preparation method of described conductive silver paste is:
[0040] (1) Weigh 20g of resin 5703 and 20g of dimethyl nylon acid into a three-necked flask, heat up to 95°C, stir for 5h at a stirring speed of 300r / min, and pour into a closed container after the resin is completely dissolved Lower to normal temperature for standby;
[0041] (2) In the fume hood, add the resin solution prepared in step (1) into the container, and at the same time add 10g of dimethyl nylon acid, 2g of curing agent BT301, 2g of additive BYK-333 and 1g of thixotropic Agent DM-20S, use a high-speed disperser to mix evenly at a speed of 800r / min;
[0042] (3) Add 45g of silver powder to the mixture obtained in step (2), use a high-speed disperser to mix evenly at a speed of 400r / min, and then grind with a three-roll machine. Three-roller machine, carry out fine rolling 8 times, the detection fineness is 6 μm, collect the material, and ...
Embodiment 3
[0045] A kind of conductive silver paste for membrane switch, the preparation method of described conductive silver paste is:
[0046] (1) Weigh 7.5g of resin 103 and 30g of dimethyl nylon acid into a three-necked flask, raise the temperature to 75°C, and stir for 8h at a stirring speed of 300r / min until the resin is completely dissolved and pour into a closed Drop to normal temperature in the container for standby;
[0047] (2) In the fume hood, add the resin solution prepared in step (1) into the container, and at the same time add 15g of dimethyl nylon acid, 1g of curing agent 7160A, 1g of auxiliary agent BYK-333 and 0.5g of Variable agent HB-615, use a high-speed disperser to mix evenly at a speed of 800r / min;
[0048](3) Add 45g of silver powder to the mixture obtained in step (2), use a high-speed disperser to mix evenly at a speed of 400r / min, and then grind with a three-roll machine. Three-roll machine, carry out fine roll 5 times, detect the fineness to be 8 μ m, co...
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Abstract
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