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Silicone oils generally refer to linear polysiloxane products that remain liquid at room temperature. Generally divided into two categories: methyl silicone oil and modified silicone oil. The most commonly used silicone oil - methyl silicone oil, also known as ordinary silicone oil, its organic groups are all methyl, methyl silicone oil has good chemical stability, insulation, good hydrophobicity. It is obtained by hydrolyzing dimethyldichlorosilane with water to obtain an initial polycondensation ring body. The ring body is cracked and rectified to obtain a low ring body. A mixture of different degrees of polymerization can be obtained by removing low boilers by distillation under reduced pressure.

Silicone oil is a kind of polyorganosiloxane with different degree of polymerization chain structure. It is obtained by hydrolyzing dimethyldichlorosilane with water to obtain an initial polycondensation ring body. The ring body is cracked and rectified to obtain a low ring body. A mixture of different degrees of polymerization can be obtained by removing low boilers by distillation under reduced pressure.