硅酸苄基三（氯乙基）酯的合成及表征

Synthesis and Characterization of benzyl trichloroethyl silicate

摘要:

以四氯化硅、苯甲醇和环氧乙烷为原料，合成一种硅卤协同阻燃增塑剂硅酸苄基三（氯乙基）酯。探讨反应时间，反应温度以及反应物质的量比等对收率的影响，筛选出最佳的工艺条件为四氯化硅与苯甲醇的物质的量比为1：1，四氯化硅与环氧乙烷的物质的量比为1：3.2，反应温度为30℃，反应时间为2h，产率为98%。并采用FTIR，1H-NMR，极限氧指数等技术表征硅酸苄基三（氯乙基）酯的分子结构及性能。

Abstract:

A silicon-halogen synergistic flame retardant plasticizer benzyl trichloroethyl silicate was synthesized by using silicon tetrachloride, benzyl alcohol and ethylene oxide as raw materials. The effect of reaction time, temperature and amount ratio of substance on product yield was discussed．The optimal conditions for preparation r were selected as follows: n(silicon tetrachloride):n(benzyl alcohol) was 1: 1; n(silicon tetrachloride):n(ethylene oxide) was 1: 3.2; reaction time was 2h at 30℃ and the percentage of product yield could reach 98%. The molecular structures of benzyl trichloroethyl silicate and its related performance measurement were determined by means of FTIR，1H NMR and LOI technique.