不同聚丙烯对超高分子量聚乙烯流变行为和力学性能的影响  

Effect of Different Polypropylene on the Rheological and Mechanical Properties of Ultrahigh Molecular Weight Polyethylene

作　　者：左源[1] 盖景刚[1] 李惠林[1] 

机构地区：[1]高分子材料工程国家重点实验室,四川大学高分子研究所,四川成都610065

出　　处：《高分子材料科学与工程》2010年第12期73-76,共4页Polymer Materials Science & Engineering

基　　金：国家重点基础研究专项经费资助项目(2005CB23800);国家自然科学基金资助项目(51003067);中央高校基本科研业务费资助

摘　　要：研究了不同共聚聚丙烯(PP-C)对超高分子量聚乙烯(UHMWPE)/均聚聚丙烯(PP-H)体系的增容作用,考察了UHMWPE/PP-H和UHMWPE/PP-B(嵌段共聚PP)体系的流变和力学性能。结果表明,加入分子量较大的PP-B(EPS30R)能提高UHMWPE/PP-H体系的力学性能且不影响其加工性,UHMWPE/EPS30R体系的力学性能优于UHMWPE/PP-H。扫描电镜(SEM)和动态力学分析(DMA)结果表明,EPS30R改善了UHMWPE/PP-H体系的相容性,UHMWPE/EPS30R体系的相容性优于UHMWPE/PP-H。The effect of different copolymerized polypropylene（PP-C） on the compatibility of the ultrahigh molecular weight polyethylene/homogenous polypropylene （UHMWPE/PP-H） was studied,and the rheological behavior and mechanical properties of UHMWPE/PP-B and UHMWPE/PP-H blend were contrastively investigated. The results show that PP-B （EPS30R） can improve the mechanical properties of blend while not affect its processability. Besides,UHMWPE/EPS30R has also been proved to have better mechanical properties than UHMWPE/PP-H. The results from scanning electron microscope （SEM） and dynamic mechanical analysis（DMA） show that EPS30R can improve the compatibility of UHMWPE/PP-H blends,and UHMWPE/EPS30R has the better compatibility than UHMWPE/PP-H.

关 键 词：超高分子量聚乙烯 嵌段共聚聚丙烯 相容性 

分 类 号：O631.21[理学—高分子化学]