| 芯棒与口模反向旋转挤出聚乙烯管结构与性能的研究 |
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| 引用本文： | 聂敏,白时兵,王琪.芯棒与口模反向旋转挤出聚乙烯管结构与性能的研究[J].高分子学报,2011(11):1291-1297. |
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| 作者姓名： | 聂敏 白时兵 王琪 |
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| 作者单位： | 高分子材料工程国家重点实验室(四川大学)四川大学高分子研究所 成都610065 |
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| 基金项目： | 国家重大基础研究计划(973计划,项目号2005CB623808)资助 |
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| 摘 要： | 采用自行研制的新型旋转挤出装置,通过芯棒与口模同时反向旋转挤出制备聚乙烯(PE)管.结果表明,在口模与芯棒反向旋转挤出过程中,管道内外壁除受到轴向应力作用外,还受到芯棒和口模旋转所施加的环向应力,其合力方向不再是沿管道轴向而是与其有一定的角度.因此,分子链的取向方向和以此链为初级成核点形成的串晶偏离轴向,增强了管道抵抗...
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| 关 键 词： | 聚乙烯管 旋转挤出 耐开裂性 应力 温度 |
STRUCTURE AND PERFORMANCE OF POLYETHYLENE PIPE PREPARED BY MANDREL AND DIE OPPOSITE ROTATION EXTRUSION |
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| NIE Min
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BAI Shibing
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WANG Qi.STRUCTURE AND PERFORMANCE OF POLYETHYLENE PIPE PREPARED BY MANDREL AND DIE OPPOSITE ROTATION EXTRUSION[J].Acta Polymerica Sinica,2011(11):1291-1297. |
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| Authors: | NIE Min BAI Shibing WANG Qi |
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| Institution: | NIE Min,BAI Shibing,WANG Qi(The State Key Lab.of Polymer Materials Engineering,Polymer Research Institute of Sichuan University,Chengdu 610065) |
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| Abstract: | In order to overcome the shortcomings of the conventional extrusion technologies and to prepare polyethylene(PE) pipes with higher performances,our research group designed and manufactured a novel rotation extrusion processing system.The effect of mandrel and die opposite rotation extrusion on PE pipe's microstructure and resistance to slow crack growth was studied.The experimental results showed that when the mandrel and die rotated in the opposite directions during the extrusion process of PE pipes,apart ... |
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| Keywords: | Polyethylene pipe Rotation extrusion Slow crack growth Stress Temperature |
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