Alkoxy-terminated polydimethylsiloxane and preparation method thereof

The invention relates to the technical field of organic silicon materials, in particular to alkoxy-terminated polydimethylsiloxane and a preparation method thereof. The preparation method of the alkoxy-terminated polydimethylsiloxane comprises the following steps: hydroxyl silicone oil, an alkoxy-containing end-capping reagent and a solid base catalyst are mixed for a reaction, and the solid base catalyst is mainly prepared by loading nitrate of alkali metal on a carrier. According to the preparation method of the alkoxy-terminated polydimethylsiloxane provided by the embodiment of the invention, the specific solid base catalyst is adopted for reaction, so that not only can a good alkoxy-terminated effect be achieved under mild reaction conditions, but also the alkoxy-terminated polydimethylsiloxane is high in catalytic activity, and the reaction can be further promoted. 本发明涉及有机硅材料技术领域，具体而言，涉及烷氧基封端聚二甲基硅氧烷及其制备方法。烷氧基封端聚二甲基硅氧烷的制备方法包括：将羟基硅油、含有烷氧基的封端剂和固体碱催化剂混合进行反应，其中，所述固体碱催化剂主要通过碱金属的硝酸盐负载于载体上制备得到。本发明实施例提供的烷氧基封端聚二甲