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以巯丙基三甲氧基硅烷和苯基三甲氧基硅烷为原料,在甲醇作溶剂、浓HCl作催化剂的条件下水解缩合制备了巯基聚倍半硅氧烷和巯基-苯基聚倍半硅氧烷,并利用FTIR和GPC对合成产物进行了表征。结果表明:当苯基单体添加量为20%时,所制备的巯基-苯基聚倍半硅氧烷中均含有一定量的巯基和苯基,在引入部分苯环增加折光率的同时也保持了产物拥有进一步反应的活性巯基,且相对分子质量较大,分子量分布较窄。
In this paper, mercaptopropyl silsesquioxane and mercapto-phenylpolysilsesquioxane were prepared by hydrolytic condensation of mercaptopropyltrimethoxysilane and phenyltrimethoxysilane under the condition of methanol as solvent and concentrated HCl as catalyst Oxoane, and the synthesized products were characterized by FTIR and GPC. The results show that when the content of phenyl monomer is 20%, all the mercapto-phenyl polysilsesquioxanes contain a certain amount of mercapto and phenyl groups, while the introduction of some benzene rings increases the refractive index Maintained the product has further reaction of active thiol, and relatively large molecular weight, molecular weight distribution is narrow.