Silver Electrode Paste

Abstract

The invention relates to a silver electrode paste. The silver electrode paste comprises, by mass, 25%-75% of spherical silver powder, 0%-35% of flaky silver powder, 2%-18% of glass powder and 15%-48% of organic carriers. The silver electrode paste is obtained through proper matching of the components. Experiments show that the silver electrode paste is good and stable in physical performance, low in volatility, wide in silver content range, strong in platability, wide in sintering temperature range, large in after-plating adhesive force, and stable in quality.

Description

technical field

[0001] The invention relates to the field of electronic components, in particular to a silver electrode paste. Background technique

[0002] With the continuous development of the electronics industry, intelligence, informationization, lightness, smallness, and thinness are the development trends of the electronics industry, and new materials applied to electronic components are very important. As one of the key materials of components, silver electrode paste is more and more important to study its performance. Ferrite core inductance device electrodes are still mainly used by customers at this stage. Imported silver electrode paste, but its disadvantages are general adhesion and high price. Other silver electrode pastes involved in this field have high and low adhesion. And the fast volatilization during use leads to unstable quality and is only suitable for some low-end products. Contents of the invention

[0003] Based on this, it is necessary to provi...

Examples

Embodiment 1

[0039] A kind of silver electrode paste, by mass percentage, comprises following component:

[0040] 75% spherical silver powder, 0% flake silver powder, 10% glass powder and 15% organic vehicle.

[0041] Among them, the particle diameter of the spherical silver powder is 4.0 microns.

[0042] Glass powder includes the following components by mass percentage:

[0043] ZnO13.56wt%, B 2 o 3 12.01wt%, SiO 2 59.31wt%, BaO2.36wt%, K 2 O0.00wt%, CaO6.09wt%, Al 2 o 3 0.00wt% and Bi 2 o 3 6.67wt%.

[0044] The organic carrier includes terpineol and ethyl cellulose dissolved in terpineol, and the mass ratio of terpineol to ethyl cellulose is 86.7:13.3.

Embodiment 2

[0046] A kind of silver electrode paste, by mass percentage, comprises following component:

[0047] Spherical silver powder 70%, flake silver powder 0%, glass powder 3.5%, organic carrier 26.5%.

[0048] Wherein, the particle diameter of the spherical silver powder is 2.5 microns.

[0049] Glass powder includes the following components by mass percentage:

[0050] ZnO2.36wt%, B 2 o 3 14.42wt%, SiO 2 58.03wt%, BaO15.65wt%, K 2 O1.65wt%, CaO2.66wt%, Al 2 o 3 5.23wt% and Bi 2 o 30.00wt%.

[0051] The organic vehicle includes a mixed solvent of terpineol and ethyl acetate and ethyl cellulose and hydrogenated rosin resin dissolved in a mixed solvent of terpineol and ethyl acetate, terpineol, ethyl acetate, ethyl cellulose and hydrogenated rosin resin The mass, ratio is 30:53:9:8.

Embodiment 3

[0053] A kind of silver electrode paste, by mass percentage, comprises following component:

[0054] Spherical silver powder 65%, flake silver powder 2%, glass powder 7.8%, organic carrier 25.2%.

[0055] Wherein, the particle size of the spherical silver powder is 1.0 micron, and the particle size of the flake silver powder is 10.0 micron.

[0056] Glass powder includes the following components by mass percentage:

[0057] ZnO9.22wt%, B 2 o 3 2.73wt%, SiO 2 51.45wt%, BaO16.43wt%, K 2 O6.82wt%, CaO5.42wt%, Al 2 o 3 0.87wt% and Bi 2 o 3 7.26wt%.

[0058] The organic carrier includes a mixed solvent of terpineol and ethyl acetate and polyurethane resin dissolved in the mixed solvent of terpineol and ethyl acetate, and the mass ratio of terpineol, ethyl acetate and polyurethane resin is 40:40:20.

technical field

[0001] The invention relates to the field of electronic components, in particular to a silver electrode paste. Background technique

[0002] With the continuous development of the electronics industry, intelligence, informationization, lightness, smallness, and thinness are the development trends of the electronics industry, and new materials applied to electronic components are very important. As one of the key materials of components, silver electrode paste is more and more important to study its performance. Ferrite core inductance device electrodes are still mainly used by customers at this stage. Imported silver electrode paste, but its disadvantages are general adhesion and high price. Other silver electrode pastes involved in this field have high and low adhesion. And the fast volatilization during use leads to unstable quality and is only suitable for some low-end products. Contents of the invention

[0003] Based on this, it is necessary to provi...

Examples

Embodiment 1

[0039] A kind of silver electrode paste, by mass percentage, comprises following component:

[0040] 75% spherical silver powder, 0% flake silver powder, 10% glass powder and 15% organic vehicle.

[0041] Among them, the particle diameter of the spherical silver powder is 4.0 microns.

[0042] Glass powder includes the following components by mass percentage:

[0043] ZnO13.56wt%, B 2 o 3 12.01wt%, SiO 2 59.31wt%, BaO2.36wt%, K 2 O0.00wt%, CaO6.09wt%, Al 2 o 3 0.00wt% and Bi 2 o 3 6.67wt%.

[0044] The organic carrier includes terpineol and ethyl cellulose dissolved in terpineol, and the mass ratio of terpineol to ethyl cellulose is 86.7:13.3.

Embodiment 2

[0046] A kind of silver electrode paste, by mass percentage, comprises following component:

[0047] Spherical silver powder 70%, flake silver powder 0%, glass powder 3.5%, organic carrier 26.5%.

[0048] Wherein, the particle diameter of the spherical silver powder is 2.5 microns.

[0049] Glass powder includes the following components by mass percentage:

[0050] ZnO2.36wt%, B 2 o 3 14.42wt%, SiO 2 58.03wt%, BaO15.65wt%, K 2 O1.65wt%, CaO2.66wt%, Al 2 o 3 5.23wt% and Bi 2 o 30.00wt%.

[0051] The organic vehicle includes a mixed solvent of terpineol and ethyl acetate and ethyl cellulose and hydrogenated rosin resin dissolved in a mixed solvent of terpineol and ethyl acetate, terpineol, ethyl acetate, ethyl cellulose and hydrogenated rosin resin The mass, ratio is 30:53:9:8.

Embodiment 3

[0053] A kind of silver electrode paste, by mass percentage, comprises following component:

[0054] Spherical silver powder 65%, flake silver powder 2%, glass powder 7.8%, organic carrier 25.2%.

[0055] Wherein, the particle size of the spherical silver powder is 1.0 micron, and the particle size of the flake silver powder is 10.0 micron.

[0056] Glass powder includes the following components by mass percentage:

[0057] ZnO9.22wt%, B 2 o 3 2.73wt%, SiO 2 51.45wt%, BaO16.43wt%, K 2 O6.82wt%, CaO5.42wt%, Al 2 o 3 0.87wt% and Bi 2 o 3 7.26wt%.

[0058] The organic carrier includes a mixed solvent of terpineol and ethyl acetate and polyurethane resin dissolved in the mixed solvent of terpineol and ethyl acetate, and the mass ratio of terpineol, ethyl acetate and polyurethane resin is 40:40:20.

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