EPDM橡胶的流变特性实验研究  

Experimental study on rheological properties of EPDM compound in a capillary rheometer

作　　者：赵建才[1] 

机构地区：[1]上海交通大学机械与动力学院,上海200030

出　　处：《弹性体》2006年第4期11-13,共3页China Elastomerics

基　　金：上海汽车工业科技发展基金项目(0314)

摘　　要：为了研究橡胶熔体流变性能对其加工成型的影响,利用毛细管流变仪对三元乙丙橡胶(EPDM)的流变特性进行了实验研究。实验结果表明:EPDM橡胶在毛细管挤出时,剪切速率对剪切应力、剪切粘度和挤出胀大的影响最大;挤出温度对三者有一定的影响;在长径比相同时,毛细管半径对剪切应力和剪切粘度几乎没有影响,但对挤出胀大影响较大。In order to explain the effect of rheological properties of rubber melt on shape of extrusion, experimental studies on rheological properties of EPDM compound are carried out in a capillary rheometer. The results show that when EPDM compound is extruded in a capillary rheometer, the effect of shear rate on ~hear stress,shear viscosity and die swell is the greatest in the three factors：shear rate, temperature and radius of capillary. The temperature is a factor to affect the rheological properties to a certainty. When using the same length to diameter ratio,shear stress and shear viscosity are hardly affected by the radius of capillary, but the die swell is greatly affected by it.

关 键 词：橡胶 流变性能 毛细管流变仪 

分 类 号：TQ333.4[化学工程—橡胶工业]