High-temperature-resistant conductive copper alloy protective agent, preparation method and copper alloy passivation method

Abstract

The invention relates to the technical field of copper alloy protective agents, and particularly discloses a high-temperature-resistant conductive copper alloy protective agent, a preparation method and a copper alloy passivation method. The copper alloy protective agent is prepared from the following raw materials in percentage by weight: 4-6% of diethylene glycol diethyl ether, 30-55% of an emulsifying dispersant, 0.5-1.5% of a wetting agent, 0.3-2% of a chelating agent, 1.5-2.5% of 2-mercaptobenzothiazole, 2.5-3.5% of 2-heptadecyl imidazole, 7.5-12.5% of 2-sulfydryl-5-methylbenzimidazole and the balance deionized water. According to the copper alloy protective agent, through the synergistic effect of the raw materials, the high temperature resistance and the salt fog resistance of a passivated copper alloy are effectively improved, the service life of the passivated copper alloy is prolonged, the stability of the passivated copper alloy is improved, the using effect of the copper alloy protective agent is also improved, and the market requirements are met.

Description

technical field [0001] The application relates to the technical field of copper alloy protective agent, more specifically, it relates to a high temperature resistant and conductive copper alloy protective agent, a preparation method and a copper alloy passivation method. Background technique [0002] Copper alloy is an alloy composed of pure copper as the base and adding one or several other elements. It has good thermal conductivity and electrical conductivity, and is widely used in military, industrial, electronic, civil, etc. Due to the limitation of the use environment, if the copper alloy is not treated, its surface is prone to corrosion. Therefore, it is necessary to passivate the copper alloy and improve the service life of the copper alloy. Copper alloys that have been passivated by traditional hexavalent chromium or benzotriazole will usually change color after 1-3 minutes of treatment at a high temperature of 200 ° C, and will disappear after 4-8 hours of treatment...

AI Technical Summary

Problems solved by technology

Copper alloys that have been passivated by traditional hexavalent chromium or benzotriazole will usually change color after 1-3 minutes of treatment at a high temperature of 200 ° C, and will disappear after 4-8 hours of treatment in neutral salt spray. Corrosion will occur, but with the development of science and technology, the precision and performance of terminal application products have higher requirements on the performance of copper alloys. Copper alloy protective agent, and applied to the passivation treatment of copper alloy to meet market demand