Classification of organic silicide named and described the nature of the trouble, the best two examples illustrate its application-Iota

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Service > Classification of organic silicide named and described the nature of the trouble, the best two examples illustrate its application

Classification of organic silicide named and described the nature of the trouble, the best two examples illustrate its application

For example: hexamethyl cyclotrisiloxane, i.e. D3, its nature properties: boiling point 134 ℃. 64 ℃ melting point. The relative density of 1.12. Trace amounts of silicon in the sodium alkoxide, potassium alkoxide or silicon small amount of concentrated sulfuric acid, hexamethylcyclotrisiloxane Si-O-Si bond breaking rearrangement trisiloxane, generating linear polysiloxanes and cyclic silicone alkane mixtures. This catalyzed rearrangement process fracture with balanced characteristics in the ring opening polymerization of the body into a high molecular weight polymer, but also occurs chain scission degradation of macromolecules. An excess of a methanol solution of sodium hydroxide, generating sodium dimethyl silicone glycol. Dimethyldichlorosilane by hydrolysis with KOH material to the preparation of high-temperature pyrolysis. Usually in the form of the mixing ring (containing hexamethyl cyclotrisiloxane) prepared dimethyl silicone oil and silicone rubber.
Octamethyl siloxane; eight simethicone
Octamethyl cyclotetrasiloxane (D4), is a kind of dimethyldichlorosilane as the main raw material, based on the hydrolyzate obtained after the hydrolysis step of the synthesis after separation, distillation, or the hydrolyzate after after cleavage or further separated on the basis of the DMC, the resulting compounds individually defined after distillation, primary dimethyl Cyclosiloxane mainly used for ring-opening polymerization of a different degree of polymerization of silicone oil, silicone rubber and silicone resin. These polymers are further processed into products widely used in construction, electronics, textiles, automotive, personal care, food, machinery processing, there are a small number of direct applications.

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