1, according to the degree of polymerization classification of liquid silicone rubber: is relatively mixed type semi-solid silicone rubber and common room temperature vulcanized single component silicone for a class of organic silicone, this kind of rubber has good fluidity, vulcanization fast, can be cast molding can be injected molding. Mixed type silicone rubber: It is synthetic rubber which is made by adding silicone rubber raw rubber to the double roll rubber mixing machine or closed kneading machine and gradually adding silica black, silicone oil and other additives repeatedly refining.
2, according to the vulcanization temperature classification room temperature vulcanized silicone rubber: is a two-component condensation type room temperature vulcanized silicone rubber, its raw rubber is usually hydroxy-sealed polysiloxane, and then combined with other compounding agents, catalysts to form a rubber, the viscosity of this rubber can range from 100 CST to one million CST between. High temperature vulcanized silicone rubber: It is a linear polydimethylsiloxan-based polymer with high molar mass, mixed with reinforcing fillers and vulcanizing agents, etc., and vulcanized into an elastomer under heating and pressure.
3, according to the form of packaging classification of single component room temperature vulcanized silicone rubber: although easy to use, but because its vulcanization is dependent on the water in the atmosphere, the thickness of the vulcanized magnetic needle is limited, can only be used for occasions requiring a thickness of less than 6 mm. Two-component room temperature vulcanized silicone rubber: is the most common kind of room temperature vulcanized silicone rubber, its raw rubber is usually hydroxy-terminated polysiloxane, and then combined with other compounding agents, catalysts to form a rubber, the viscosity of this rubber can range from 100 CST to one million CST between.