锡酸盐/十溴二苯醚阻燃体系对聚苯乙烯的阻燃消烟作用  

Flame Retardancy and Smoke Suppression of Polystyrene Filled with Stannates/DBDPO

作　　者：屈红强[1] 程朝立[2] 刘磊[1] 徐建中[1] 

机构地区：[1]河北大学化学与环境科学学院,河北保定071002 [2]保定市水文水资源勘测局,河北保定071000

出　　处：《中国塑料》2008年第10期76-80,共5页China Plastics

基　　金：河北省自然科学基金资助项目(B2007000144);河北大学青年基金资助项目(Q200614)

摘　　要：研究了锡酸盐/十溴二苯醚(DBDPO)阻燃体系与 Sb_2O_3/DBDPO 阻燃体系对聚苯乙烯(PS)的阻燃消烟作用。通过热重分析和差热分析研究了阻燃 PS 从室温到800℃的热降解过程,探讨了不同体系的阻燃机理。结果表明,锡酸盐阻燃剂体系处理的样品极限氧指数最高为27.8%,烟密度等级最低为68.37%,与未经阻燃剂处理的样品相比具有较好的阻燃消烟性能。加入 Fe^(3+)、Co^(2+)、Ni^(2+)、Cu^(2+)等可改变 PS 的热降解过程,对 PS 第一阶段的降解起催化作用,并且有效地促进炭化物的生成,提高材料的阻燃消烟性能。The flame retardancy and smoke supression of PS filled with stannates/DBDPO or Sb2O3/DB- DPO were studied. The thermal degradation in air of the samples was studied using differential thermal analysis （DTA） and thermogravimetry （TG） from ambient temperature to 800 ℃. The mechanism of the flame retardaney was studied. PS based on stannates gave the highest limiting oxygen index of 27.8 % and the lowest smoke density rating of 68.37 %. Fe^3＋ , Co^2＋ , Ni^2 ＋ and Cu^2＋ could change the thermal degradation of PS and accelerated the formation of carbide and thus enhanced the flame retardancy and smoke suppression of the materials.

关 键 词：聚苯乙烯 锡酸盐 阻燃性能 降解 热分析 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]