改性LDH与IFR对聚苯乙烯的协效阻燃研究  

Research on synergistic flame retardant effect of modified LDH and IFR on polystyrene

作　　者：赵建宇 段嘉豪 杨玲[1] ZHAO Jian-yu;DUAN Jia-hao;YANG Ling(School of Management and Engineering,Capital University of Economics and Business,Beijing 100071,China)

机构地区：[1]首都经济贸易大学管理工程学院,北京100071

出　　处：《消防科学与技术》2021年第11期1654-1657,共4页Fire Science and Technology

摘　　要：制备由聚磷酸铵(APP)、季戊四醇(PER)和十二烷基单磷酸钾改性的锌铝双氢氧化物(ZnAl-LDH-PK)组成的复合阻燃剂与膨胀阻燃剂IFR协效阻燃聚苯乙烯(PS),研究了二者不同配比下对聚苯乙烯的阻燃性能、燃烧性能。结果表明,适当比例的ZnAl-LDH-PK和IFR协同作用于复合材料,可使材料具有更优异的热稳定性和成炭能力;当组分为PS、22%IFR、3%ZnAl-LDH-PK时,氧指数(LOI)达35,总热释放和生烟总量较纯PS分别降低了28%和38%,提高了耐火性能;SEM结果证实ZnAl-LDH-PK与IFR的协效作用使复合材料形成了高度膨胀和连续致密的炭层。A composite flame retardant composed of ammonium polyphosphate(APP),pentaerythritol(PER)and potassium dodecyl monophosphate modified zinc aluminum double hydroxide(ZnAl-LDH-PK)was prepared with the intumescent flame retardant IFR synergistic flame retardant polystyrene(PS),and the flame retardant properties and combustion performance of polystyrene under different ratios of the two were studied.The results showed that the appropriate ratio of ZnAl-LDH-PK and IFR synergistically acted on the composite material,can promote the material with better thermal stability and carbon formation ability;when the component was PS,22%IFR,3%ZnAl-LDH-PK,its Gmited oxygen index LOI reached 35,and the total heat release and total smoke generation were reduced by 28%and 38%,respectively,compared with pure PS,improving the fire resistance.The SEM results confirmed that ZnAl-LDHPK and IFR synergistically formed a highly expanded and continuous dense carbon layer in the composite.

关 键 词：PS 层状双氢氧化物 膨胀阻燃剂 协同作用 

分 类 号：X932[环境科学与工程—安全科学] TQ325.2[化学工程—合成树脂塑料工业]