APP-DAP-CS膨胀阻燃体系阻燃聚甲醛研究  

Study of APP-DAP-CS intumescent flame retardant applied on polyoxymethylene

作　　者：王晗 柴颖俐 刘宇婷 刘惠平 WANG Han;CHAI Ying-li;LIU Yu-ting;LIU Hui-ping(College of Urban Construction and Safety Engineering,Shanghai Institute of Technology,Shanghai 201418,China)

机构地区：[1]上海应用技术大学城市建设与安全工程学院,上海201418

出　　处：《消防科学与技术》2021年第6期914-917,共4页Fire Science and Technology

摘　　要：为提高聚甲醛(POM)的阻燃性能,以聚磷酸铵(APP)-磷酸氢二铵(DAP)-玉米淀粉(CS)为膨胀阻燃体系,将其与POM通过熔融共混制备了阻燃POM复合材料。并采用氧指数(LOI)仪、水平垂直燃烧(UL-94)测定仪、热重-差示扫描量热仪(TG-DSC)、扫描电镜(SEM)及锥形量热仪(CONE)等仪器对所制备的样品进行了测试与表征,结果表明:当复配膨胀体系中APP∶DAP∶CS=4∶3∶1时,阻燃POM的LOI可达38,UL-94等级为V-1级,热释放速率和总释热量均较小,炭层结构致密稳定,说明APP-DAP-CS膨胀阻燃体系能够有效抑制POM的燃烧,具有良好的阻燃作用。In order to improve the flame retardancy of polyoxymethylene(POM),the flame retardant POM composites were prepared by melt blending ammonium polyphosphate(APP)-diammonium hydrogen phosphate(DAP)-corn starch(CS)with POM.The samples were tested and characterized by limiting oxygen index(LOI),horizontal vertical combustion(UL-94),thermogravimetry differential scanning calorimetry(TG-DSC),scanning electron microscopy(SEM)and cone calorimeter(CONE).The results show that the LOI of flame retardant POM can reach 38 when APP:DAP:CS=4:3:1,UL-94 grade is V-1.The heat release rate and total heat release are relatively small.The structure of carbon layer is compact and stable,which indicates that APP-DAP-CS intumescent flame retardant system can effectively inhibit the combustion of POM and has a good flame retardant effect.

关 键 词：聚甲醛 膨胀阻燃体系 聚磷酸铵 玉米淀粉 磷酸氢二铵 

分 类 号：X932[环境科学与工程—安全科学] TQ326.51[化学工程—合成树脂塑料工业]