主管:中华人民共和国应急管理部
主办:应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU

消防科学与技术 ›› 2021, Vol. 40 ›› Issue (6): 914-917.

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APP-DAP-CS 膨胀阻燃体系阻燃聚甲醛研究

王晗,柴颖俐,刘宇婷,刘惠平   

  1. 上海应用技术大学城市建设与安全工程学院,上海201418
  • 出版日期:2021-06-15 发布日期:2021-06-15
  • 通讯作者: 刘惠平(1974-),男,湖南常德人,上海应用技术大学城市建设与安全工程学院副教授,博士。
  • 作者简介:王晗(1997-),女,内蒙古乌兰浩特人,上海应用技术大学城市建设与安全工程学院硕士研究生,主要从事阻燃材料及光催化研究,上海市奉贤区海泉路100 号,201418。

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

WANG Han,CHAI Ying-li,LIU Yu-ting, LIU Hui-ping   

  1. College of Urban Construction and Safety Engineering,Shanghai Institute of Technology,Shanghai 201418,China
  • Online:2021-06-15 Published:2021-06-15

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。

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

Abstract: 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.

Key words: polyoxymethylene, intumescent flame retardant, APP, CS, DAP