【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。更多还原

【Abstract】 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.更多还原