胶粉/高密度聚乙烯热塑性弹性体的性能研究  

Properties of crumb rubber/HDPE thermoplastic elastomer

作　　者：瓮子良[1] 冯予星[1] 伍社毛[1] 张立群[1] 

机构地区：[1]北京化工大学北京市新型高分子材料制备与加工重点实验室,北京100029

出　　处：《橡胶工业》2007年第3期137-140,共4页China Rubber Industry

基　　金：国家自然科学基金资助项目(59903001)

摘　　要：制备胶粉/高密度聚乙烯(HDPE)热塑性弹性体(TPE),并研究其性能。结果表明,混炼温度从150℃提高到200℃时,胶粉/HDPE TPE的强伸性能降幅较大,但流变性能较好,且挤出物表观质量较好,混炼温度以150℃为宜;胶粉改性时过辊次数增加可使其粒径进一步减小,从而提高改性胶粉/HDPE TPE的物理性能,但过辊次数增至一定程度时会使胶粉分子链降解,致使改性胶粉/HDPE TPE的物理性能降低;胶粉/HDPE TPE的返炼性能良好。A crumb rubber/HDPE thermoplastic elastomer（TPE） was prepared and its properties were investigated. The results showed that the tensile strength of crumb rubber/HDPE TPE decreased significantly, but its rheological property and appearance quality of its extrudate improved by increasing the mixing temperature from 150℃ to 200℃,and the most suitable mixing temperature was 150℃ ;the increase of mill runs during modification of crumb rubber would make the particle size of crumb rubber finer resulting in the improved physical properties of modified crumb rubber/HDPE TPE,but as the mill runs increased over a certain level, the molecular chains of crumb rubber would break down resulting in poorer physical properties of modified crumb rubber/HDPE TPE; and the modified crumb rubber/HDPE TPE had good remillability.

关 键 词：胶粉 高密度聚乙烯 热塑性弹性体 改性 

分 类 号：TQ334[化学工程—橡胶工业]