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.
作者
孙英娟
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)
出处
《塑料科技》
CAS
北大核心
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)。
关键词
粉煤灰
三氧化二锑
软质聚氯乙烯
阻燃性能
Flyash
Antimony trioxide
Flexible polyvinyl chloride
Flame retardancy
