4A分子筛对软质PVC阻燃抑烟作用  

Study on the application of 4Azeolite in the flame retardance and smoke suppression of flexible PVC

作　　者：朱鹏[1] 刘惠平[1] 金文超 刘章蕊[1] 李家骅[1] 

机构地区：[1]上海应用技术学院城市建设与安全工程学院,上海201418 [2]上海电气电站工程公司,上海201199

出　　处：《消防科学与技术》2013年第3期306-309,共4页Fire Science and Technology

基　　金：上海市教委重点学科建设项目(J51502);上海应用技术学院安全技术及工程重点学科建设项目(A14/1020Q110010)

摘　　要：对4A分子筛及其与Al(OH)3或(和)Mg(OH)2组成的复配体系作为软质PVC阻燃抑烟添加剂的性能进行了研究。结果表明:4A分子筛作为单一添加剂时,只有在添加量较大的情况下才对软质PVC有较好的阻燃效果,但抑烟性能不太理想;4A分子筛与Al(OH)3或Mg(OH)2组成的二元复合添加物对软质PVC具有很好的抑烟或阻燃效果,且二元组分之间存在着协效阻燃或抑烟作用;4A分子筛与Al(OH)3及Mg(OH)2组成的三元复合体系对软质PVC同时具有很好的阻燃和抑烟性能,三者的最佳质量比为1∶1∶10,按此最佳配比,当总添加量为35%时,测得相应PVC材料的氧指数为41,烟密度等级(SDR)为57.64,但力学性能下降。In this paper the flame retardance and smoke suppres- sion of 4 A zeolite and its compound with AI（OH）3 or （and） Mg（OH）2 as the additive of flexible PVC were studied. The experimental results show that good flame retardant effect is presented only when a large amount of 4A zeolite is added into flexible PVC, but the performance of smoke suppressing is un- favorable. As 4A zeolite is combined with AI（OH）3 or Mg （OH）2, the PVC exhibits satisfactory flame retarding or smoke suppressing effect due to synergetic effects between the compo- nents in binary complex system. It is further investigated to add 4A zeolite, AI（OH）3 and Mg（OH）2 simultaneously into flexi- ble PVC in this study, and both excellent flame retardance and smoke suppression are obtained. The optimal mass ratio of 4A zeolite, AI（OH）3 and Mg（OH）2 is determined as 1：1 ：10 by or- thogonal experiments. Under this ratio, when the mass addition level of composite system is 35 %, the LOI and SDR of PVC are 41 and 57.64 respectively, but its mechanical properties are dropped somewhat.

关 键 词：聚氯乙烯 阻燃 抑烟 4A分子筛 复合阻燃剂 

分 类 号：X913.4[环境科学与工程—安全科学] TQ325.3[化学工程—合成树脂塑料工业]