1. The use of modified silicone oil: on the one hand, it can inhibit the yellowing of the silicone rubber after vulcanization in the second stage; on the other hand, it can increase the vulcanization speed and crosslinking density of the silicone rubber, shorten the curing time, and play the role of a crosslinking active agent. Some experts have invented a paste-like double 2,5 vulcanizing agent that resists yellowing. Because of the addition of high hydrogen-containing silicone oil, the anti-yellowing effect of the vulcanizing agent is greatly enhanced, the appearance of the silicone product is more transparent, and the vulcanizing agent splash is prevented during processing, which reduces the potential safety hazard.

2. Some experts added organic surfactants to control the size of the secondary particles during the treatment of white carbon black. The products were treated with a compound anti-yellowing agent and used in silicone rubber products, which has a good anti-yellowing effect. Experts from Zhongkai College of Agricultural Engineering Ge Jianfang and other experts have increased the anti-yellowing performance of the compounded rubber and expanded its use environment by adding an anti-yellowing additive pyrophosphoric acid without reducing the physical and mechanical properties of the compounded rubber.

3. In terms of process, when silicone rubber products are molded, the main problem is that the color turns yellow after molding: the mold temperature is too high or the vulcanization time is too long.