新型无卤膨胀阻燃聚丙烯的制备及阻燃性能

复合材料学报, 2013, 30(1): 83-89.

新型无卤膨胀阻燃聚丙烯的制备及阻燃性能

卢林刚 ^1, , 徐晓楠 ^2, , 王大为 ^3, , 董希琳 ^4, , 杨守生 ^5,

1.中国人民武装警察部队学院科研部,廊坊,065000

2.中国人民武装警察部队学院消防工程系,廊坊,065000

3.中国人民武装警察部队学院研究生队,廊坊,065000

4.中国人民武装警察部队学院科研部,廊坊,065000

5.中国人民武装警察部队学院消防工程系,廊坊,065000

基金项目: 河北省自然科学基金(E2012507008)

关键词：膨胀阻燃剂 , 聚丙烯 , 阻燃性能 , 燃烧 , 锥形量热仪

Preparation and flame retardancy of intumescent flame-retardant polypropylene

利用有机杂环磷酸酯1,2,3三(5,5-二甲基1,3-二氧杂环己内磷酸酯基)苯(FR)、聚磷酸铵(APP)和三聚氰胺(MEL)制备新型无卤三源膨胀阻燃聚丙烯(IFR/PP)材料,通过极限氧指数(LOI)、水平燃烧(UL-94)、热重分析法(TGA)、锥形量热(cone)等方法研究了IFR对聚丙烯阻燃性能影响.结果表明:当IFR总添加质量分数为30％(FR∶APP∶MEL质量比为4∶8∶3),阻燃IFR/PP的LOI达到36.2％,其热释放速率峰值(pk- HRR)、热释放速率平均值(av HRR)、有效燃烧热平均值(av EHC)、比消光面积平均值(av SEA)、质量损失速率平均值(av MLR)及一氧化碳释放率平均值(av - CO)相对未阻燃PP分别降低75.9％、71.7％0、76.4％、74.6％、58.3％和50.0％,300s时CO释放量接近0,呈现出良好的阻燃、抑烟和抑毒性能；SEM研究表明,IFR催化PP在燃烧初期形成了致密、坚硬的优质炭层.

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