| 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 |
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| DOI： |
| 中文关键词: 胶粉 高密度聚乙烯 热塑性弹性体 改性 |
| 英文关键词: crumb rubber HDPE TPE modification |
| 基金项目:国家自然科学基金资助项目(59903001) |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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 |
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