一种膨胀阻燃PP体系及其燃烧性能  

A Intumescent Flame-Retardant Polypropylene System and Its Burning Behaviors

作　　者：韩俊峰[1] 王德义[1] 刘云[1] 王玉忠[1,2] 

机构地区：[1]四川大学化学学院,降解与阻燃高分子材料四川省重点实验室,环境友好高分子材料教育部工程研究中心,四川成都610064 [2]高分子材料工程国家重点实验室(四川大学),四川成都610065

出　　处：《高分子材料科学与工程》2009年第3期138-141,共4页Polymer Materials Science & Engineering

基　　金：国家杰出青年科学基金(50525309)

摘　　要：制备了一种阻燃聚丙烯/膨胀阻燃剂(IFR)/蒙脱土(MMT)膨胀阻燃体系,研究了不同阻燃组分含量对体系阻燃性能的影响。结果表明,阻燃剂总添加量为30%,其中的成炭剂和聚磷酸铵(APP)的配比为1∶2时,体系的极限氧指数为29%,垂直燃烧试验(UL-94)达到V-2级;而在上述体系中添加0.5%的MMT时,体系的LOI提高到31%,垂直燃烧试验(UL-94)通过V-0级,表现出较好的协同阻燃效果。采用扫描电境(SEM)和红外光谱(FT-IR)对体系的固相残炭进行了观察和分析,探讨了可能的阻燃机理。A composite composed of polypropylene/intumescent flame retardant/montmorillonite （PP/IFR/MMT） was prepared. The effect of the content of various components on the flame retardancy of the composites was studied via limiting oxygen index （LOI） and vertical burning test （UL-94）. The results show that when the total loading of flame retardants is 30% and the ratio of IFR to APP is 1 to 2, the LOI value of the composite reaches 29%. However, when 0.5 %OMMT is added into the flame retardant significant improvement： LOI value of 31% and UL-94 V-0 transform infrared （FT-IR） were used to investigate the morp system, the flame retardancy of the composites has a rating. Scanning electronic microscopy and Fourier hology and structure of char residues after burning The results show that MMT can promote the PP/IFR system to form harder and more compact charring layers which reduces the transition speed of oxygen. A possible flame-retardant mechanism was explored.

关 键 词：聚丙烯 膨胀阻燃剂 蒙脱土 阻燃性 

分 类 号：TQ314.248[化学工程—高聚物工业]