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中文摘要：
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326，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，添加少量的改性分了筛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。
英文摘要：
The mesoporous material MCM-41 was modified by DOPO in order to improve its effec- tiveness as a synergist agent for fire retardant composite. Ammonium polyphosphate （APP）-pentaerythri- tol （PER）-melamine （MEL） as flame retardants and modified MCM-41 as synergist agent were used to fabricate intumescent flame retardant （IFR）-polypropylene （PP）. The synergist effect of modified MCM-41 and IFR on flame retardancy, mechanical property and thermal property of composite PP were investigat- ed. It was found that 1% （mass fraction） modified MCM-41 could obviously improve the flame retardancy of the composite PP with a high LOI value 32.6, which is around 91.76 % higher than that of pure PP. Re- sults of TGA, DMA and SEM showed that MCM-41 could catalyze esterification reaction between IFR, increase the char residue and form much denser char-layer to improve the retardant performance of the materials.
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