Analysis of mechanism of resin handicraft mold silicone vulcanization

Analysis of mechanism of resin handicraft mold silicone vulcanization

Resin handicraft mold silicone type belongs to the condensation of two-component RTV silicone rubber, is composed of A, B two parts, A component silicone makings is made based polymer and filler as the main distribution, and can contain crosslinking agent, team B is curing agent (vulcanizing agent). The proportion of catalyst and crosslinking agent, after mixing placed at room temperature can be vulcanized elastomer.

Special resin handicraft as the common type of condensation RTV silicone rubber, silicone rubber and has a high heat resistance, cold resistance, weather resistance, durability and resistance to chemicals, physical performance is good.

Resin handicraft mold silicone rubber vulcanization process is in the presence of catalyst, based at the end of the end carboxyl polymer molecular chain molecules of hydrolysis of condensation crosslinking reaction. Including lip condensation crosslinking, decarboxylation condensation crosslinking, dehydrogenation condensation crosslinking and shrink condensation crosslinking. For the preparation of the vulcanizing agent, resin handicraft mold vulcanizing agent of silica gel is usually are ethyl silicate and their partial hydrolysis condensation product as the cement, mixed in certain proportion, and cooperate with other additives.