| 常压动态保压注塑自增强高密度聚乙烯的结构与性能 |
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| 引用本文： | 官青,申开智.常压动态保压注塑自增强高密度聚乙烯的结构与性能[J].高等学校化学学报,1995,16(7):1129-1133. |
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| 作者姓名： | 官青 申开智 |
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| 作者单位： | 四川联合大学塑料工程系高分子材料工程国家重点实验室, 成都, 610065 |
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| 基金项目： | 国家自然科学基金国家教育委员会博士点基金 |
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| 摘 要： | 研究了常压动态保压注塑自增强高密度聚乙烯的结构和力学性能的关系,自增强高密度聚乙烯的抗张强度和杨氏模量分别从原来的23MPa和1.0GPa提高到93MPa和5.0GPa。DSC、TEM和X射线衍射研究结果表明:力学性能的显著改善主要归因于串晶的产生、高分子链沿流动方向的轴取向和结构更加完善的球晶的生成。和高压保压法相比,本法具有现实的工业应用前景。
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| 关 键 词： | 注射模塑 自增强 聚乙烯 高强度 高模量 |
| 收稿时间： | 1994-09-19 |
Structure and Properties of Self-Reinforced High Density Polyethylene Prepared by Oscillating Packing Injection Molding Under Low Pressure |
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| GUAN Qing,SHEN Kai-Zhi.Structure and Properties of Self-Reinforced High Density Polyethylene Prepared by Oscillating Packing Injection Molding Under Low Pressure[J].Chemical Research In Chinese Universities,1995,16(7):1129-1133. |
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| Authors: | GUAN Qing SHEN Kai-Zhi |
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| Institution: | State Key Laboratory of Polymer Materials Engineering, Plastics Engineering Department, Sichuan Union University, Chengdu, 610065 |
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| Abstract: | This paper has studied the relationship of structure and properties of self-reinforced general grade high density polyethylene (HDPE) prepared by oscillating packing injection molding. The Young's modulus and tensile strength of HDPE have been enhanced greatly from original 1. 0 GPa, 23MPa to 5. 0 GPa, 93 MPa respectively. DSC, TEM and X-ray diffraction investigations indicate the improvement in mechanical properties is ascribed to the production of shish-kebab crystals, the orientation of molecular chains along the flow direction and well developed spherulites. Compared to high pressure injection molding, the method has good perspective in practical application. |
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| Keywords: | Injection molding Self-reinforcement Polyethylene High modulus High strength |
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