本文研究了以水玻璃作为硅酸盐阴离子,按Lentz方法进行的三甲基硅基化反应。在改变反应克分子比例时,可得到不同分子量和硅基化程度的硅树脂,由此说明,在硅基化反应时可能发生聚合、解聚和水解等副反应。对影响硅树脂产率的反应条件和三甲基硅基化树脂的一些物理性质也进行了讨论。 In this paper, the trimethylsilylation reaction using water glass as silicate anion and according to Lentz method was studied. The silicones with different molecular weights and degree of silanization can be obtained by changing the molar ratio of the reactants, which indicates that side reactions such as polymerization, depolymerization and hydrolysis may occur during the silylation reaction. The reaction conditions affecting the yield of the silicone and some of the physical properties of the trimethylsilyl resin are also discussed.