Liquid silicone rubber (LSR) is a new type of silicone rubber elastomer, which uses the complex of transition metals (platinum, nickel, rhodium, etc.) as catalyst to form a bridge between Si-H and si-ch = CH2. What is the addition of silicone products?

In the early 1970s, foreign countries began to study the liquid silicone rubber of injection molding process. However, due to the immature technology in all aspects, it can only be suitable for extrusion molding process.

The 1980s was a period of slow development of liquid silicone rubber, and several technical problems have been difficult to solve: first, the contradiction between ensuring good fluidity and high strength; Second, how to ensure that there is enough operation time after no material mixing and no crosslinking; The third is the limitation of mold design level.

The 1990s was an era of great development of liquid silicone rubber. Firstly, MQ silicone rubber was widely used to solve the contradiction between fluidity and strength of silicone rubber; Secondly, the technology of cross-linking inhibitors has also been continuously improved, from the simple use of alkynol compounds to the use of the addition product of alkynol and SIH containing polysiloxane, and the platinum microcapsule technology has also made great progress; Third, the cold circulation module technology of die design has also cleared the way for liquid silicone rubber.

After the 1990s, the varieties of silicone rubber began to diversify. At present, almost all varieties of high-temperature silicone rubber, liquid silicone rubber, and its performance is better than room temperature vulcanization silicone rubber. This widens the space for the application of liquid silicone rubber.