HT copper protective agent is a special protective agent for copper and copper alloys, which belongs to water-soluble technology. It is the product of nanotechnology. This protective agent forms a colorless and transparent film on the surface of copper and copper alloys with a thickness of several nanometers.
It can prevent water, seawater, atmosphere, oxygen, hydrogen sulfide, sulfur dioxide and some organic vapors from eroding the workpiece. Mainly used for the protection of copper and copper alloys in indoor environment.
Introduction of technological characteristics of HT copper protective agent;
1, water-soluble technology, safety and environmental protection;
2, the process operation is simple. Only by soaking the cleaned workpiece in the working liquid can an effective protective film be formed on the surface of the workpiece;
3. The film hardly affects the welding performance and contact resistance of the copper layer, and is suitable for protecting the copper layer of electronic components and circuit boards;
4. The protective layer has no protective effect on the corrosion of ammonia or cyanide;
5. The protective film can be baked at the temperature of 150℃-200℃ for 0.5- 1 hour, and the protective performance will not be reduced;
Extended data:
Matters needing attention in the use of HT copper protective agent:
1, chemical polishing and cleaning of degreased workpiece; Bright acidic copper or other copper comes out after electroplating; Rinse with flowing water twice, and then rinse with deionized water once (this can minimize the impurities in the liquid medicine, thus prolonging the service life of the liquid medicine).
2. If it is operated at normal temperature, it must be treated in the working solution for 5- 10 minutes, and in principle it should not be less than 5 minutes, because the passivation film formed on the copper layer by this solution will last about 5 minutes at normal temperature. If the salt spray test of the product takes more than 8 hours, it is recommended to use it under heating.
3. If it is used under heating conditions, it is suggested that the temperature should be controlled between 60-70℃, preferably around 65℃. Under these conditions, the oxidation protection of copper parts can form a complete, uniform and shiny protective film in only 2 minutes, achieving the best anti-tarnishing effect.
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