Silicone resins are highly cross-linked network structure of the polyorganosiloxane is typically a methyl trichlorosilane, dimethyl dichlorosilane, phenyl trichlorosilane, diphenyl dichlorosilane, or methyl phenyl Various mixtures of silane dichloride in the presence of an organic solvent such as toluene, at a lower temperature hydrolysis to give the acid hydrolyzate. The initial hydrolysis product is cyclic, linear and crosslinked polymer mixture, usually contain a considerable number of hydroxyl groups. After washing with water to remove the acid hydrolyzate neutral initial polycondensation thermal oxidation in air or in the presence of a polycondensation catalyst further, final form three-dimensional network structure highly crosslinked. Usually silicone practical value, the molecular composition ratio of Si in the range of R and 1.2 to 1.6. A general rule, R: the smaller the value of Si, the more the obtained silicone resin can be cured at lower temperatures; R: The larger the value of Si, a silicon resin, to make the resulting cured material 250 requires 200 baked at a high temperature ℃ for a long time, and the resulting film hardness is poor, but much better than the former thermoelasticity. If you want to know more information, please visit (silicone sealant http://www.weizhili.com) Website