| 高密度聚乙烯（HDPE）在静高压下的结晶研究 |
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| 引用本文： | 吴瑞琪,王惠.高密度聚乙烯（HDPE）在静高压下的结晶研究[J].高压物理学报,1989,3(2):165-171. |
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| 作者姓名： | 吴瑞琪 王惠 |
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| 作者单位： | 成都科技大学高温高压物理研究所
(吴瑞琪，王惠，杨光群)，成都科技大学塑料工程系(黄锐) |
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| 基金项目： | 国家自然科学基金委员会资助课题 |
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| 摘 要： | 高密度聚乙烯（HDPE）在1~2 GPa的静高压下发生熔体结晶。实验中HDPE从熔融态以5 ℃/min的速率冷却。对经过高压处理后的样品在大气压下进行了DSC，SEM和WAXD测量。测量结果表明，高压后的HDPE的结晶度由原来的68.2%提到89.9%。<100>方向的伸直链晶体的存在，静高压和温度的控制是形成PE伸直链晶体的关键。
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| 关 键 词： | 伸直链晶体 聚乙烯 |
| 收稿时间： | 1988-12-08; |
STUDIES OF CRYSTALLIZATION OF HIGH DENSITY POLYETHYLENE UNDER HIGH HYDROSTATIC PRESSURE |
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| Wu Ruiqi,Wang Hui,Yang Guangqun,Huang Rui.STUDIES OF CRYSTALLIZATION OF HIGH DENSITY POLYETHYLENE UNDER HIGH HYDROSTATIC PRESSURE[J].Chinese Journal of High Pressure Physics,1989,3(2):165-171. |
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| Authors: | Wu Ruiqi Wang Hui Yang Guangqun Huang Rui |
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| Institution: | 1. Institute of High-Temperature and High-Pressure Physics, Chengdu University of Science and Technology, Chengdu 610065, China;2. Department of Plastic Engineering, Chengdu University of Science and Technology, Chengdu 610065, China |
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| Abstract: | High density polyethylene has been crystallized under a pressure 1GPa to 2GPa and cooled at 5 'C per minute from the melting point.The solids were analyzed at atmosphere pressure by DSC, SEM and WAXD. The data show that the crystalline content of the samples by WAXD increases to 89.9% from 68.2% of the original material. Extended chain lamellae have thickened from 14 nm to 25nm. DSC and SEM observations show the existence of the extended chain lamellae. Controlling of high pressure and temperature is the kay of the formation of extended-chain crystals. |
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| Keywords: | extended chain lamellae polyethylene |
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