硅酸甲基三(二氯丙基)酯的合成及表征

Synthesis and characterization of methyl tridichloropropyl silicate

以四氯化硅、甲醇和环氧氯丙烷为原料,合成硅卤协同阻燃剂硅酸甲基三(二氯丙基)酯。探讨了反应物质的量比、反应温度以及反应时间等对产品收率的影响,确定了最佳工艺条件:四氯化硅与甲醇的物质的量比为1∶1、四氯化硅与环氧氯丙烷的物质的量比为1∶3.3、反应温度为95℃、反应时间为8 h时,产品收率为98%。采用FTIR、1H-NMR、极限氧指数等技术表征了硅酸甲基三(二氯丙基)酯的分子结构及相关性能。

Methyl tridichloropropyl silicate,a silicon-halogen synergistic flame retardant,was synthesized with silicon tetrachloride, methanol and epoxy chloropropane as raw materials. The effects of reaction time ,temperature and ratio of substance on product yield were discussed. The optimal conditions for the preparation were as follows ：nsilicon tetrachloride：nmethanol was 1：1 ;nsilicon tetrachloride：nepoxy chloropropane was 1：3.3 ;reaction time was 8 h at 95 ℃ and the product yield was 98%. The molecular structures of methyl trichloroethyl silicate and its related performance were characterized by means of FTIR, ^1H NMR and LOI.