Dimethyl silicone oil, is a kind of hydrophobic silicone material.In medicine, daily chemical products, food, construction and other fields are used.The top can be used in skin care products, the bottom can be used in industrial manufacturing, such a versatile dimethylsilicone oil is how to produce?Zinca gives you a brief introduction to the method.
The method of synthesis of dimethylsilicone oil is based on octadecyclotetrasiloxane and hexamethyldisiloxane as raw materials and acid as catalyst. In the process of synthesis, there are two reactions, polymerization and equilibrium.
The reaction process is as follows: add the hexamethylcyclotetrasiloxane, hexamethyldisiloxane and homemade solid superacid into the three-mouth flask, adjust the temperature and stirring speed, and start the reaction.After the reaction for a certain time, stop the reaction.Filter the solid catalyst, the filtrate for vacuum distillation, to get the product. In the synthesis of raw materials, the price of hexamethyldisiloxane is much higher than that of tetramethylcyclotetrasiloxane. From the economic point of view, to consume as little as possible to generate as large viscosity of hexamethyldisiloxane dimethyl silicone oil as the goal of process conditions optimization.
The equilibrium reaction between hydrolysate of dimethyldichlorosilane and hexamethyldisiloxane and the condensation reaction between low molar polydimethylsiloxane diol and trimethylsiloxane or low molar mass MDnM can also be used.
The above is a simple introduction to the synthesis of dimethylsilicone oil, in the process of production, there are many places that need to pay attention to, so as to produce high quality dimethylsilicone oil, dimethylsilicone oil produced by Zinca, good performance, good quality.
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