Electric slurry leadless low-melting point medium glass and production method thereof

Abstract

The present invention discloses an electronic pulp unleaded low melting point dielectric glass and the preparation. The ingredients of the raw materials include by weight percent: 70-85 percent of Bi2O3, 9-24 percent of B2O3, 0.1-10 percent of ZnO, 0.1-5 percent of Al2O3 and 0-3 percent of SiO2. The preparation includes (1) fully mixing the raw materials; (2) putting the materials into a crucible and then into an electric furnace with the temperature between 1100 and1200 DEG C and preserving the temperature for 2-4 hours; (3) casting the glass metal after melt into certain shape; (4) putting the glass metal to a ball grinder for ball-milling; and (5) after ball-milling, carrying out sieving, detecting and packaging on the glass powder. Through the adjustment of the mixture rate relation among all the ingredients, the unleaded low melting point dielectric glass can be obtained, with the sintering temperature being 480-550 DEG C. The glass designed in the invention has good stability and low softening point, is suitably used as the low melting point glass applied in electronic pulp and simultaneously is applicable to the additives of high power valves, electrothermal tubes and thick film resistors as well as insulation coatings of circuit boards and the like, and has good insulating and dielectric performances.

Description

【Technical field】 [0001] The invention belongs to the field of electronic paste glass and its preparation, in particular to an electronic paste lead-free low melting point dielectric glass and a preparation method. 【Background technique】 [0002] The existing low-melting-point glass for electronic paste contains a large amount of heavy metal lead. Lead is one of the six metals used by humans at the earliest. It is harmful to human health and can accumulate in the body to cause lead poisoning. The role of lead poisoning Rather slow and stealthy, it is not easy to detect until the toxicity is manifested. Lead is a cumulative poison, which is easily absorbed by the gastrointestinal tract. Part of it destroys the blood to decompose red blood cells, and part of it spreads to the organs and tissues of the whole body through the blood and enters the bones. However, lead compounds deposited in internal organs and bone marrow are excreted very slowly from the body, gradually forming...

AI Technical Summary

Problems solved by technology

[0002] The existing low-melting-point glass for electronic paste contains a large amount of heavy metal lead. Lead is one of the six metals first used by human beings. It is harmful to human health and can accumulate in the body to cause lead poisoning. The role of lead poisoning Rather slow and stealthy, it is not easy to detect until the toxicity is manifested