EPDM/HDPE热塑性硫化胶的结构与性能研究  

Structure and properties of EPDM/HDPE TPV

作　　者：程相坤[1] 赵洪玲[1] 王兆波[1] 

机构地区：[1]青岛科技大学材料科学与工程学院,山东青岛266042

出　　处：《弹性体》2010年第1期65-69,共5页China Elastomerics

基　　金：青岛科技大学博士基金项目

摘　　要：采用动态硫化法制备了三元乙丙橡胶（EPDM）／高密度聚乙烯（HDPE）热塑性硫化胶（TPV），并对其力学性能和微观相结构进行了研究。结果表明。EPDM/HDPE TPV的力学性能随HDPE含量的增加而提高，其应力-应变曲线呈现出典型的弹性体特征；当EPDM／HDPE共混比为60／40时，所制备的TPV表现出了良好的综合性能；EPDM分散相的粒径在1～20μm之间且较均匀地分散于基体中；HDPE连续相在拉伸断裂过程中于断面处形成了成簇的纳米级微纤维；TPV两相结合良好。The EPDM/HDPE TPVs were prepared by dynamic vulcanization technique, the mechanical properties and the micro-phase structure of the prepared EPDM/HDPE TPVs were investigated. The results showed that the mechanical properties of the EPDM/HDPE TPV increased with the increasing HDPE content,moreover, the stress-strain curves of the prepared TPVs showed the charac- teristics of a typical elastomer. Considering the proper mechanical properties, the weight ratio of EP- DM/HDPE blend should be 60/40. The vulcanized EPDM particles were dispersed evenly in the matrix and the dimension of the dispersed EPDM particles was in the range of 1 - 20 μm. The cluster like nanofibres could be found on the fracture surface of the TPV,which were formed from the plastic de- formation of spherical crystals of HDPE during the tensile test. The interface between EPDM and HDPE was well.

关 键 词：EPDM HDPE 动态硫化 热塑性硫化胶 微观相结构 

分 类 号：TQ330.7[化学工程—橡胶工业] TQ333