共混时间对UHMWPE/LDPE共混物的流变性能及力学性能影响研究  

Effects of Blending Time on Rheological Behavior and Mechanical Properties of UHMWPE/LDPE blends

作　　者：张浮龙 俞洋[2] 周远建 兰修才 

机构地区：[1]中蓝晨光化工研究设计院有限公司,四川成都610041 [2]四川大学化学工程学院,四川成都610207

出　　处：《塑料工业》2016年第9期125-127,共3页China Plastics Industry

摘　　要：通过熔融共混技术制备得到超高摩尔质量聚乙烯(UHMWPE)/低密度聚乙烯(LDPE)共混物,研究了共混时间对共混物的微观形态、流变特性和力学性能的影响。结果表明,随着共混时间的增加,UHMWPE和LDPE相容性得到明显改善,同时共混物的断裂伸长率显著增加,但UHMWPE/LDPE(50/50)共混物的表观黏度逐渐升高,流动性能下降。Ultrahigh molecular weight polyethylene （UHMWPE）/low density polyethylene （LDPE） blends were prepared by melt blending .method. Effects of blending time on the morphology, rheological and meehartieal properties of hlertds were determined. The results show that with the increase in blending time, both the compatibility of UHMWPE and LDPE and the elongation at break of the UHMWPE/LDPE blend are improved significantly. However the apparent viscosity of the UHMWPE/PP （50/50） blend increases at the same time, which reasuhs in the worse fluidity of UHMWPE.

关 键 词：超高摩尔质量聚乙烯 低密度聚乙烯 流变行为 力学性能 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]