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Sulfuration-resistant conductor paste

A kind of conductor paste, vulcanization-resistant technology, applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, electrical components, etc. The effect of simple preparation process and strong process adaptability

Active Publication Date: 2022-04-15
西安宏星电子浆料科技股份有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the conductive paste used in the existing thick film circuit products has poor anti-sulfurization performance, and when used in a long-term humid environment, silver reacts with sulfur in the environment to cause circuit failure.

Method used

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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with specific examples, which do not limit the protection scope of the present invention. The protection scope of the present invention is only limited by the claims, and any omission, replacement or modification made by those skilled in the art on the basis of the disclosed embodiments of the present invention will fall within the protection scope of the present invention.

[0017] 1. Selection of precious metal powder: select silver powder with a particle size of 1.2-1.3 μm and a specific surface area of ​​12-15 m 2 / g of palladium powder, the specific surface area is 10 ~ 12m 2 / g of platinum powder, silver powder, palladium powder, and platinum powder are mixed in a weight ratio of 78:2:0.5 as precious metal powder.

[0018] 2. Preparation of acidified bismuthite: Soak the bismuthite with a particle size of 0.7-1.3 μm in dilute sulfuric acid with a mass concentration of 1% for 30 minutes, filter...

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Abstract

The invention discloses a vulcanization-resistant conductor paste which is a paste with certain fluidity prepared by mixing noble metal powder, glass powder, acidized bismuthite, an inorganic additive and an organic carrier. The acidized bismuthite is added into the conductor paste, so that the performance of the conductor paste is ensured, the vulcanization resistance of the conductor paste is improved, the use reliability of the conductor paste in a sulfur-containing environment is ensured, and the use requirements of circuit products in the sulfur-containing environment can be met.

Description

technical field [0001] The invention belongs to the technical field of electronic paste, and in particular relates to a conductive paste with sulfide-resistant properties, which is widely used in thick-film circuit products with an alumina ceramic substrate and a thick-film printing process. Background technique [0002] Electronic paste is the basic material for the manufacture of thick film components. It is a paste made of solid powder and organic solvents mixed uniformly by three-roll rolling. It is widely used in thick film circuit products in the modern microelectronics industry. In the thick film circuit products of the modern microelectronics industry, people have higher and higher requirements for electronic components. Thick film circuit products are widely used, especially in various humid environments. The sulfur in the conductive paste reacts and penetrates from the surface of the conductive paste to the inner layer, causing circuit failure. Therefore, higher r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/16H01B1/22H01B13/00
Inventor 不公告发明人
Owner 西安宏星电子浆料科技股份有限公司
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