粉煤灰/三氧化二锑对软质聚氯乙烯阻燃消烟作用研究  

Fly Ash/Antimony Trioxide as Flame Retardants and Smoke Suppressants for Flexible Poly(vinyl chloride)

作　　者：孙英娟[1] 宋京朔 刘岩辉 SUN Ying-juan;SONG Jing-shuo;LIU Yan-Hui(Heibei Key Laboratory of Hazardous Chemicals Safety and Control Technology,School of Chemical and Environmental Engineering,North China Institute of Science and Technology,Langfang 065201,China)

机构地区：[1]华北科技学院化学与环境工程学院,河北省危险化学品安全与控制技术重点实验室,河北廊坊065201

出　　处：《塑料科技》2022年第1期40-44,共5页Plastics Science and Technology

基　　金：中央高校基本科研业务(3142021001)。

摘　　要：将粉煤灰(Flyash)、三氧化二锑(Sb_(2)O_(3))复合阻燃剂加入软质聚氯乙烯(PVC),制备PVC/Sb_(2)O_(3)/Flyash复合材料。通过氧指数(LOI)、TG、锥形量热、SEM等测试,探究Flyash和Sb_(2)O_(3)的协同效应,对PVC阻燃抑烟性能的影响。结果表明:当m(PVC)∶m(Sb_(2)O_(3))∶m(Flyash)=100∶4∶3,PVC/Sb_(2)O_(3)/Flyash具有较好的阻燃抑烟性能,其LOI可达到33.9%。PVC/Sb_(2)O_(3)/Flyash的阻燃抑烟性比PVC/Sb_(2)O_(3)和PVC好。PVC/Sb_(2)O_(3)/Flyash的热释放速率降低、热稳定性增强,成炭率更高。PVC/Sb_(2)O_(3)/Flyash难点燃,火灾性能指数(FPI)大,火灾蔓延指数(FGI)小,降低火灾危险性,阻燃性能优异。The fly ash (Flyash) and antimony trioxide (Sb_(2)O_(3)) composite flame retardants were added to flexible polyvinyl chloride (PVC) to prepare PVC/Sb_(2)O_(3)/Flyash composites.The effects of synergistic effect of Flyash and Sb_(2)O_(3)on the flame retardancy and smoke suppression properties of PVC were investigated by LOI,TG,cone calorimeter and SEM.The results show that when m(PVC)∶m(Sb_(2)O_(3))∶m(Flyash)=100∶4∶3,PVC/Sb_(2)O_(3)/Flyash has good flame retardancy and smoke suppression performance,and its LOI can reach 33.9%.PVC/Sb_(2)O_(3)/Flyash has better flame retardancy and smoke suppression than PVC/Sb_(2)O_(3)and PVC.The heat release rate of PVC/Sb_(2)O_(3)/Flyash is decreased,the thermal stability is increased,and the char yield is higher.PVC/Sb_(2)O_(3)/Flyash is difficult to ignite,the fire performance index (FPI)is large,and the fire growth index (FGI) is small,which reduces the fire risk and has excellent flame retardancy.

关 键 词：粉煤灰 三氧化二锑 软质聚氯乙烯 阻燃性能 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业] O641.4[理学—物理化学]