Insulated medium size for thick-firm circuit
An insulating medium and thin-film circuit technology, applied in the field of insulating medium paste for thick-film circuits, can solve the problems of pinholes, short life, and low device yield.
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[0021] Example 1
[0022] 1) Preparation of insulating glass: PbO 60%, B 2 O 3 15%, SiO 2 20%, Al 2 O 3 3%, TiO 2 1%, ZrO 2 1%, uniformly mixed by weight, kept at 1350°C for 30 minutes and melted, poured the glass liquid on a roller machine and pressed it into a 1-2mm thick sheet, which was ground and passed through a 100-mesh sieve for use.
[0023] 2) Mix the 100-mesh glass powder and the commercially available black pigment for ceramics in a weight ratio of 90:10. Then finely ground to a maximum particle size of less than 10 μm, and the average particle size is D 90 less than 5μm. called inorganic powder.
[0024] 3) Preparation of organic medium: first mix terpineol, butyl carbitol acetate (diethylene glycol butyl ether acetate), and dibutyl phthalate in a weight ratio of 40%, 40%, and 20% uniform, called solvent. Ethyl cellulose was then added as a thickener. The weight ratio of ethyl cellulose to solvent was 6:94. After heating to 60~90℃ to dissolve, it ...
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[0028] Example 2
[0029] 1) Preparation of insulating glass: PbO 62%, B 2 O 3 10%, SiO 2 21%, Al 2 O 3 1%, TiO 2 1%, ZrO 2 3%, Bi 2 O 3 2%, mixed uniformly by weight, kept at 1360°C for 30 minutes and melted, poured the glass liquid onto a roller machine and pressed it into a 1-2mm thick sheet, ground the glass sheet and passed it through a 100-mesh sieve for use.
[0030] 2) Mix the glass powder that has passed through a 100-mesh sieve and a commercially available blue pigment for ceramics in a weight ratio of 96:4. Then finely ground to a maximum particle size of less than 10 μm, and the average particle size is D 90 less than 5μm. called inorganic powder.
[0031] 3) Preparation of organic medium: firstly mix terpineol and butyl carbitol in a weight ratio of 50% and 50%, then add 3% by weight of dispersant, defoamer, anti-settling agent and other auxiliary agents , called the solvent. Ethyl cellulose and nitrocellulose were added as thickeners. The weigh...
Example Embodiment
[0034] Example 3
[0035] 1) Preparation of insulating glass: PbO 65%, B 2 O 3 5%, SiO 2 25%, Al 2 O 3 2%, TiO 2 0.5%, ZrO 2 0.5%, CaO 1%, ZnO 1%. Mix evenly by weight, keep at 1350°C for 30 minutes to melt, pour the glass liquid on a roller machine and press it into a 1-2mm thick sheet, grind the glass sheet and pass it through a 100-mesh sieve for use.
[0036] 2) Mix the glass powder that has passed through a 100-mesh sieve and a commercially available red pigment for ceramics in a weight ratio of 91:9. Then finely ground to a maximum particle size of less than 10 μm, and the average particle size is D 90 less than 5μm. called inorganic powder.
[0037] 3) Preparation of organic medium: firstly, ethyl acetate, butyl carbitol, and auxiliary (defoamer, anti-settling agent) are mixed uniformly at a weight ratio of 40%, 57%, and 3%, which is called a solvent. Then polymethacrylate was added as thickener and lecithin as dispersant. The weight ratios of polymethac...
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