SBA-15/PDCPD复合材料的阻燃性能  

Flame-retardant properties of SBA15/PDCPD composites

作　　者：陆昶[1] 刘继纯[1] 刘宪俊[1] 张玉清[1] 

机构地区：[1]河南科技大学化工与制药学院,高分子科学与纳米技术校重点实验室,洛阳471003

出　　处：《复合材料学报》2011年第3期35-41,共7页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51003024);河南省教育厅自然科学基金(2009A430008);河南省科技攻关资助项目(092102210296)

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。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.

关 键 词：聚双环戊二烯 介孔分子筛 负载 复合材料 阻燃 

分 类 号：TB332[一般工业技术—材料科学与工程]