Silicon rubber chemical copper-plating technique

Abstract

The invention relates to a silicone rubber chemical copper plating process, which belongs to the chemical copper plating process. The process is as follows: put the silicone rubber in a tri-alkali solution prepared by sodium hydroxide, sodium carbonate and trisodium phosphate, remove oil, and then wash with water; put it in hydrochloric acid solution to roughen, and wash with water; Soak and sensitize the silicone rubber with a solution prepared with hydrochloric acid solution, the pH value is 0.5-1.9, and wash with water; soak and activate the silicone rubber with a solution prepared with silver nitrate and ammonia water, and wash with water; add sulfuric acid Electroless copper plating is carried out in the copper plating solution, the pH value of the plating solution is required to be 12-13, and the copper plating product is obtained; the plating solution is composed of copper sulfate, formaldehyde, disodium edetate, potassium ferrocyanide and Dilute solution of sodium hydroxide. Advantages: 1. The electroless plating equipment is simple and cost-saving. 2. The copper plating layer on the surface of the silicone rubber is uniform and dense with high strength. 3. The micro-actuator with silicone rubber as the driving body has good flexibility, corrosion resistance and working stability. It can be divided into required shapes within a certain size range, and can work stably in wet and dry environments. .

Description

technical field [0001] The invention relates to a copper plating process, which is suitable for flexible conductive treatment of electrodes of micro-actuators, or other products requiring flexible conductive treatment, and is a silicone rubber chemical copper plating process. Background technique [0002] Microactuators have become a high-tech technology for understanding and transforming the world due to their small shape or small operating scale. Its application prospects are broad, involving medicine, aviation, bioengineering and other fields, and it has been valued by industrially developed countries. However, as general microactuators, they are easy to damage the operating object and destroy the working environment during work. They are weak in action, have no conductive function, are difficult to achieve continuous and smooth, have large mechanical impact, and have a short service life. Therefore, its current research is committed to the development of miniaturization ...

AI Technical Summary

Problems solved by technology

[0003] Today's electroless copper plating process is widely used. It can achieve copper plating on substrates such as metals, ceramics, glass and plastics, and the process in this area is very mature. It includes degreasing, roughening, activation, sensitization and There are several processes of electroless copper plating, but it is impossible to achieve copper plating on silicone rubber substrates only by relying on these existing processes