无卤膨胀型阻燃聚丙烯的阻燃特性Combustion Behavior of Intumescent Halogen-Free Flame-Retardant Polypropylene
张峰,金杨,王勇,于健
摘要(Abstract):
通过热失重分析仪和锥形量热仪等仪器对无卤膨胀阻燃聚丙烯的阻燃特性进行了研究。测量了聚丙烯和无卤膨胀型阻燃聚丙烯的热解过程,同时测量了纯聚丙烯及无卤膨胀型阻燃聚丙烯质量损失速率、热释放速率和残余质量分数随时间的变化规律。结果表明,随着膨胀阻燃剂添加量的增加,热释放速率不断降低,但降低的幅度逐渐减少,其质量损失速率、残余质量分数也有类似的规律。外部辐射功率的增加会加快无卤膨胀型阻燃聚丙烯分解,热释放速率会相应增大。
关键词(KeyWords): 聚丙烯;膨胀;无卤阻燃;锥形量热仪;阻燃性
基金项目(Foundation):
作者(Author): 张峰,金杨,王勇,于健
参考文献(References):
- [1]Jimenez M,Duquesne S,Bourbigot S.Multiscale exper-imental approach for developing high-performance intu-mescent coatings[J].Ind Eng Chem Res,2006,45:4 500-4 508.
- [2]Shuklin SG,Kodolov V I,Klimenko E N.Intumes-cent coatings and the processes that take place in them[J].Fibre Chemistry,2004,36(3):200-205.
- [3]Wei Ping,Li Haixing,Jiang Pingkai,et al.An invest-igation on the flammability of halogen-free fire retau-dant PP-APP-EG systems[J].Journal of Fire Sciences,2004,22:367-377.
- [4]Serge Bourbigot,Michel Le Bras,Francois Dabrowski,et al.PA-6 clay nanocomposites hybrid as char form-ing agent in intumescent formulations[J].Fire and Ma-terials,2000,24:201-208.
- [5]Blasi D C.Processes of flames spreading over the sur-face of charring fuels:Effects of the solid thickness[J].Combustion and Flame,1994,97:225-239.
- [6]Blasi D C.Analysis of convection and secondary reac-tion effects within porous solid fuels undergoing pyrol-ysis[J].Combustion Science and Technology,1993,90:315-340.
- [7]Zhang F,Zhang J,Wang Y.Modeling study on thecombustion of intumescent fire-retardant polypro pylene[J].eXPRESS Polymer Letters,2007,1(3):157–165.
- [8]张峰,张军,成云飞.聚丙烯膨胀成炭行为对裂解燃烧过程的影响[J].现代塑料加工应用,2007,19(5):5-8.