两类增韧HDPE的力学性能及熔体流动性  

MECHANICAL PROPERTIES AND MELT-FLOWABILITY OF TWO KINDS OF TOUGHENED HDPE

作　　者：白娟[1] 樊卫华[1] 周俊峰[1] 宫瑾[1] 王经武[1] 

机构地区：[1]郑州大学材料科学与工程学院,郑州450052

出　　处：《工程塑料应用》2005年第6期15-18,共4页Engineering Plastics Application

摘　　要：以高密度聚乙烯(HDPE)为基体树脂、(乙烯/丙烯)共聚物和丁苯橡胶为增韧剂制得增韧母料(ETMB)分别采用将ETMB与HDPE热机械共混和将(乙烯/丙烯)共聚物、丁苯橡胶与HDPE简单共混的方法制备了HDPE/ETMB及HDPE/弹性体两类增韧HDPE。结果表明,HDPE/ETMB的悬臂梁缺口冲击强度的提高幅度、拉伸屈服应力保持率均显著优于HDPE/弹性体,二者的弯曲弹性模量保持率基本相同;HDPE/ETMB的熔体流动速率比HDPE/弹性体的小,但仍适宜于注射成型和挤出成型。Two kinds of toughened high density polyethylene (HDPE) were prepared. One HDPE E-TMB was made through thermal mechanical blending HDPE with E toughening master batch (E-TMB) synthesized from HDPE as matrix resin, ethylene propylene copolymer(M) and butadiene-styrene rubber(N) as toughening agents. Another HDPE elastomer was produced by simply blending HDPE with M and N. The results showed that the notched Izod impact strength and conservation rate of tensile yield stress of HDPE E-TMB were markedly superior to those of HDPE elastomer, while the conservation rate of elastic modulus in bending of HDPE E-TMB and HDPE elastomer was nearly the same. The melt folw rate(MFR) of HDPE E-TMB was lower than that of HDPE elastomer, but it was still in the range of MFR fitting for injection and extrusion molding.

关 键 词：HDPE 熔体流动性 力学性能 高密度聚乙烯 缺口冲击强度 拉伸屈服应力 弯曲弹性模量 熔体流动速率 丁苯橡胶 弹性体 基体树脂 增韧母料 挤出成型 注射成型 共聚物 保持率 增韧剂 悬臂梁 丙烯 共混 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业] TQ325.306