用DOPO(9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物)对介孔分子筛MCM-41进行表面改性,将改性后的MCM-41作为阻燃协效剂与聚磷酸铵(APP)、季戊四醇(PER)及三聚氰胺(MEL)复配阻燃剂,研究了添加改性MCM-41对PP阻燃性能、力学性能和热性能的影响.结果表明,添加少量DOPO改性分子筛即可显著提高PP的阻燃性能,当改性分子筛的添加量为1％时阻燃PP的氧指数为32.6,比纯PP的提高91.76％;热重分析、动态热机械能分析和扫描电镜分析的结果表明,添加少量的改性分子筛MCM-41可催化APP/PER/MEL间的酯化反应,促进体系成炭,形成更紧密的炭层,从而提高材料的阻燃性能.
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