Liquid silicone rubber can be applied, impregnated and perfused. For example, the viscosity of 0.07~50 pa · s /25℃ hydroxyl terminated polydimethylsiloxane, with methyl vinyl bipyrrolidone silane as chain growth agent, with organic peroxide, such as peroxide benzoyl, 25-dimethyl base 5-tert-butylperoxane as curing agent, this glue good fluidity, low viscosity, In the process of vulcanization chain growth reaction occurs at the same time, so high molecular weight elastomers can be obtained, with good physical and mechanical properties. Chain extension agent methyl vinyl pyrrolidone silane, can be composed with methyl vinyl pyrrolidone dichloride silane reaction and, in the presence of triethylamine between product easy to hydrolysis, therefore, should be stored in dry sealed container, the compound of pyrrolidone base at room temperature with polydimethylsiloxane hydroxyl-terminated slow reaction, the reaction rate increases with temperature and speed up. In theory, this reaction can continue until an infinite molecular weight is obtained. The vinyl group in the methyl vinyl pyrrolidone silane can also be used as the activation point of the vulcanization reaction, which can promote the crosslinking of polydimethyl siloxane to form high molecular weight elastomers. Because the reaction between pyrrolidone group and hydroxyl group is very slow at room temperature, the mixture of various components has a long application period, in 1 hour the viscosity of the glue is basically unchanged, but still maintain good fluidity, can be injected into tiny pores. The mixture can be vulcanized into elastomer after heating at 150℃ for 10 minutes.