超支化聚磷酸酯改性PP的研究  

STUDY ON MODIFICATION OF PP BY HYPERBRANCHED POLYPHOSPHATE ESTER

作　　者：王馨[1] 吴海燕[1,2] 火文君[1] 张道洪[1,3] 井丰喜 张爱清[1] 

机构地区：[1]中南民族大学催化材料科学湖北省暨国家民委-教育部共建重点实验室,武汉430074 [2]武汉工程大学材料科学与工程学院,武汉430073 [3]吴江市太湖绝缘材料厂,吴江215214

出　　处：《工程塑料应用》2009年第12期8-11,共4页Engineering Plastics Application

基　　金：国家自然科学基金资助项目(50903094);江苏省自然科学基金资助项目(BK2009585);武汉市青年科技晨光计划(200850731406)

摘　　要：以新型的超支化聚磷酸酯(HPPE)对聚丙烯(PP)进行共混改性,研究了HPPE的用量和分子量对PP/HPPE复合材料性能的影响,还通过扫描电子显微镜(SEM)观察其试样冲击断面的微观形态并研究其增韧机理。结果表明,HPPE对PP/HPPE复合材料的冲击强度影响明显,当HPPE-1用量为3份时冲击强度可提高143.56%;熔体流动速率也有提高,但拉伸强度、弯曲强度和维卡软化点温度有微小下降,其增韧机理为两相"海-岛"结构增韧。A kind of composite material was prepared by novel hyperbranched polyphosphate ester （HPPE） and PP. The effect of HPPE content and molecular weight （or generation） on performance of HPPE/PP composite was studied. SEM was used for observing micro - morphology of their impact fracture surface and studying toughening mechanism. The results showed that the impact strength and melt flow index of HPPE/PP systems increased remarkably for the addition of HPPE, and the maximum impact strength was 2.43 times that of pure PP while containing 3phr HPPE - 1 in HPPE - 1/PP composite material, but some performance, such as tensile strength, flexural strength, Vicat temperature of HPPE/PP systems decreased a little to some extent.

关 键 词：超支化聚磷酸酯 聚丙烯 改性 

分 类 号：TQ314.248[化学工程—高聚物工业] U465.41[一般工业技术—材料科学与工程]