【作者】 唐龙祥；

【导师】 方治齐；

【作者基本信息】 合肥工业大学 ， 高分子材料科学与工程， 2001， 硕士

【摘要】 用聚醚二元醇对滑石粉（Talc）进行表面处理，再加甲苯二异氰酸酯(TDI）进行原位合成聚氨酯弹性体（TPU），形成具有壳/核结构的粉料，与聚丙烯（PP）粉料共混，对其进行增韧改性。由于TPU与PP的极性差异，两者不相容，为解决相容性问题，用马来酸酐（MAH）、苯乙烯（St）双单体固相接枝PP制备相容剂（PSM），运用红外进行鉴定。研究了壳/核比、聚氨酯弹性体含量、聚丙烯的熔体流动速率（MFR）、相容剂等因素对复合体系性能的影响，运用了扫描电子显微镜（SEM）对复合体系的微观结构进行观察。结果发现，加入相容剂PSM，复合体系的缺口冲击强度大幅度上升，而强度下降不多，甚至在增韧的同时出现增强作用。当相容齐剂用量为5％，壳/核比为0.34，TPU含量为8％时，体系综合力学性能最佳。更多还原

【Abstract】 We took surface treatment on talc with polymer dual alcohol, then added toluene diisocyanate in order to on-situation polymerize thermoplastic polyurethane elastomer (TPU), obtained shell-core structured powder which was blended with polypropylene and toughened polypropylene. Because of polarity distinction ,TPU was incompatible with polypropylene. In order to solve compatibility problem, we prepared compatibilizator (PSM) through solid-phase grafting of MAH and St onto PP, identified it with IR. The effect of shell-core ratio, content of TPU, MFR of PP, compatibilizator etc. on the mechanical properties of the composites was studied. The micro structure of the composites was observed with SEM. Results showed that the addition of PSM gave rise to improvement on notched impact strength of the composites by a large margin and slight drop of tensile strength, even reinforcement and toughening at the same time. mechanical properties of the composites became best while the dosage of PSM was 5%, TPU was 8% and the ratio of shell/core was 0.34.更多还原