What are the classifications of silicone rubber
There are many ways to classify silicone rubber. Generally, it is divided into solid silicone rubber and liquid silicone rubber according to the form before curing; it is divided into room temperature vulcanized silicone rubber and high temperature vulcanized silicone rubber according to the vulcanization temperature; according to the different monomers used, it can be divided into methyl Vinyl silicone rubber, methyl phenyl vinyl silicone rubber, fluorosilicone, nitrile silicone rubber, etc.; according to different properties and uses, it can be divided into general-purpose, ultra-low temperature, ultra-high temperature, high-strength, and oil-resistant Type, medical type, etc.
Dimethyl silicone rubber
Dimethyl silicone rubber is referred to as methyl silicone rubber:
The preparation of high-molecular-weight linear dimethyl polysiloxane rubber requires high-purity raw materials. In order to ensure the purity of the raw materials, the industry usually firstly purifies the dimethyl bismuth with a content of more than 99.5%. Chlorosilane is hydrolyzed and condensed in ethanol-water medium under acid catalysis, and the bifunctional siloxane tetramer, namely octamethylcyclotetrasiloxane, is separated, and then the tetracyclic body is exposed to the catalyst. , The formation of polymer linear dimethyl polysiloxane.