含氯溴硅酸酯阻燃剂的合成及表征

Synthesis and Application of Chlorine-bromine Silicate Ester Flame Retardants

摘要:

通过三溴苯酚钠与环氧氯丙烷反应生成三溴苯基环氧丙基醚，三溴苯基环氧丙基醚再与四氯化硅反应生成中间产物三溴苯氧基氯丙氧基三氯化硅，其再与环氧乙烷反应，得到含氯溴硅酸酯阻燃剂。探讨了反应的温度、时间、物质的量比对产率的影响，得到反应的最佳合成工艺条件：n(三溴苯基环氧丙基醚)∶n(四氯化硅)∶n(环氧乙烷)=1∶1∶3.2，50℃反应4h，产率达98.6%。并采用FTIR，1H-NMR，极限氧指数等方法表征了产品的分子结构及阻燃性能等。应用研究表明该阻燃剂对聚氯乙烯等材料有较好的阻燃增塑性。

Abstract:

Tribromophenol sodium was reacted with epichlorohydrin to generate tribromophenyl epoxy propyl ether, then tribromophenyl epoxy propyl ether was reacted with silicon tetrachloride to generate intermediate product tribromophenoxy chloropropoxy silicon trichloride, the intermediate product was further reacted with ethylene oxide, to generate chlorine-bromine silicate ester flame retardants. The effect of reaction temperature, time and amount ratio of substance on the reaction yield was discussed. The optimal conditions for preparation were selected as follows: n(tribromophenyl epoxy propyl ether): n(silicon tetrachloride): n(ethylene oxide) was 1:1:3.2, reaction time was 4h at 50℃. The percentage of the reaction yield could reach 98.6%. The molecular structures of the product and its flame retardant properties were characterized by means of FTIR, 1H-NMR and LOI technique. Applied Research showed that the flame retardants had good flame retardant plasticizer for PVC and other materials.