Continuous production method of polysilazane

• Main Authors: LIU YAN, WANG QI, ZHANG DING, SHA MIN
• Format: Patent
• Language: Chinese; English
• Published: 14.03.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention provides a continuous production method of polysilazane, which is characterized in that methyl hydrogen dichlorosilane or methyl vinyl dichlorosilane is used as a raw material and is in contact with ammonia gas flow in a continuous flow reactor for ammonolysis reaction, so that a product is obtained. The method disclosed by the invention has the advantages of cheap and easily available raw materials, simplicity and convenience in operation, high automation degree, high synthesis yield, few byproducts, short reaction time and the like. 本发明提供了一种聚硅氮烷的连续化生产方法，所述的方法用甲基氢二氯硅烷或甲基乙烯基二氯硅烷作为原料，在连续流反应器中与氨气流接触进行氨解反应，从而得到产物。本发明所述方法具有原料廉价易得、操作简便、自动化程度高、合成收率高﹑副产物少、反应时间短等优点。