Electronic silver paste for ring varistor and preparation method thereof
A piezoresistor and silver paste technology, which is applied in the direction of piezoresistor, cable/conductor manufacturing, conductive materials dispersed in non-conductive inorganic materials, etc., can solve the problem of high price of silver paste products, increase of production cost of manufacturers, Reduce the fluidity of slurry and other problems, achieve the effect of improving market competitiveness and profit margins, preventing the phenomenon of soldering silver corrosion, and improving soldering resistance
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Embodiment 1
[0033] In this embodiment, an electronic silver paste for a ring varistor, the electronic silver paste is composed of the following components: 40% ultra-fine silver powder, 30% spherical silver powder, 15% organic carrier, 10% metal oxide, Thinner 5%. in
[0034] The specific surface area of the ultrafine silver powder is 5.0m 2 / g, the particle size is 1.0 μm, and the tap density is 3.0g / mL; the specific surface area of the spherical silver powder is 0.30m 2 / g, the particle size is 2.0μm, and the tap density is 7.0g / mL. like figure 2 as shown, figure 2 It is the electron micrograph of the spherical silver powder used in the present invention;
[0035] The organic vehicle is composed of the following components by weight percentage: 10% ethyl cellulose, 30% diethylene glycol ether, 20% diethylene glycol butyl ether acetate, 15% terpineol, and 10% leveling agent , Butyl Carbitol 15%.
[0036] The metal oxide is composed of the following components in weight perce...
Embodiment 2
[0044] In this embodiment, an electronic silver paste for a ring varistor, the electronic silver paste is composed of the following components: 50% ultra-fine silver powder, 25% spherical silver powder, 12% organic vehicle, 7% metal oxide, Thinner 6%. in
[0045] The specific surface area of the ultrafine silver powder is 8.0m 2 / g, the particle size is 0.8 μm, and the tap density is 2.0g / mL; the specific surface area of the spherical silver powder is 0.40m 2 / g, the particle size is 2.5μm, and the tap density is 6.0g / mL
[0046] The organic vehicle is composed of the following components by weight percentage: ethyl cellulose 15%, diethylene glycol ether 20%, diethylene glycol butyl ether acetate 15%, terpineol 12%, leveling agent 8% , Butyl Carbitol 30%.
[0047] The metal oxide is composed of the following components in weight percentage: 20% of zinc oxide, 40% of bismuth oxide, 15% of aluminum oxide, 10% of iron oxide and 15% of nickel oxide.
[0048] The diluent i...
Embodiment 3
[0055] In this embodiment, an electronic silver paste for a ring varistor, the electronic silver paste is composed of the following components: 45% ultra-fine silver powder, 30% spherical silver powder, 10% organic vehicle, 8% metal oxide, Thinner 7%. in
[0056] The specific surface area of the ultrafine silver powder is 8.0m 2 / g, the particle size is 1.5 μm, and the tap density is 2.8g / mL; the specific surface area of the spherical silver powder is 0.45m 2 / g, the particle size is 2.3μm, and the tap density is 7.0g / mL
[0057] The organic vehicle is composed of the following components by weight percentage: ethyl cellulose 12%, diethylene glycol ethyl ether 18%, diethylene glycol butyl ether acetate 18%, terpineol 12%, leveling agent 5% , Butyl Carbitol 35%.
[0058] The metal oxide is composed of the following components in weight percentage: 25% of zinc oxide, 45% of bismuth oxide, 12% of aluminum oxide, 8% of iron oxide and 10% of nickel oxide.
[0059] Preferab...
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Abstract
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