中文摘要：

分别采用介孔分子筛SBA-15原位聚合及SBA-15负载催化剂六氯化钨原位聚合的方法制备了SBA-15/聚双环戊二烯（PDCPD）复合材料,研究了SBA-15/PDCPD复合材料的阻燃性能。研究结果表明：采用原位聚合方法制备的复合材料,SBA-15孔道中的双环戊二烯（DCPD）单体难以发生聚合反应生成PDCPD分子链,SBA-15易团聚,导致复合材料的阻燃性能没有明显改善;采用SBA-15负载催化剂原位聚合的方法制备的复合材料,在SBA-15孔道中大量生成PDCPD分子链。SBA-15的孔壁起到隔热作用,延缓介孔内聚合物分子链的热分解,使复合材料的热稳定性明显提高,水平燃烧速率下降,SBA-15与PDCPD的质量比为3∶100时,复合材料的极限氧指数由PDCPD的20.1增至21.7,表明SBA-15可提高PDCPD的阻燃性能

英文摘要：

The mesoporous molecular sieve SBA-15/polydicyclopentadiene（PDCPD） composites were prepared by in-situ polymerization（method 1） and in-situ polymerization with SBA-15 supported catalyst tungsten hexachloride（method 2） methods.The flame-retardant properties of SBA-15/PDCPD composites were studied.The results show that the polymerization of dicyclopentadiene（DCPD） monomer is difficult to occur in the pores of SBA-15 by method 1 and SBA-15 particles congregate,resulting in the minor improvement of the flame-retardant performances of composite.Method 2 is beneficial to the formation of PDCPD molecular chains in the pores of SBA-15.The thermal insulation property of SBA-15 hole walls can delay the pyrolysis process of PDCPD molecular chains located in the hole,resulting in the effective improvement of the heat-resistance of the composite and the decrease of horizontal burning rate.The limiting oxygen index of composite improves from 20.1 to 21.7 when the mass ratio of SBA-15 to PDCPD is 3∶100,indicating that SBA-15 can improve the flame-retardant of PDCPD.