新型阻燃剂硅酸三(2,3-二溴丙基)三溴苯酯的合成与应用

以三溴苯酚、四氯化硅及2,3-二溴丙醇为主要原料合成新型硅、溴协同高效阻燃剂硅酸三（2,3-二溴丙基）三溴苯酯(STTE)，探讨了加料顺序、溶剂、反应温度、反应时间及物质的量比等对产率的影响，并采用傅里叶变换红外光谱、核磁共振谱仪和极限氧指数仪等分析手段对产物的分子结构及性能进行了表征。结果表明，使用20份STTE作为阻燃剂时，聚氯乙烯（PVC）的极限氧指数达到395 %，具有良好的增塑、成炭和防熔融滴落效果。

Synthesis and application of the novel bromomaleic silicate flame retardants

Silicate tris(2,3-dibromopropyl) tribromophenyl ester was synthesized from tribromophenol, silicon tetrachloride, and 2,3-dibromopropanol. The effect of charging order, solvent, reaction temperature, reaction time, and composition on the reaction yield was also discussed. The above ester was introduced into PVC and the molecular structure and property of the system were characterized by means of FTIR, 1H NMR, and limited oxygen index. It was found that the limited oxygen index of the PVC compound containing silicate tris(2,3 dibromopropyl) tribromophenyl ester was 395 %,and had a good effect on antiflaming, plasticizing, charring, and anti dripping.