| 低频振动注射自增强HDPE实验研究 |
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| 引用本文： | 李又兵,申开智. 低频振动注射自增强HDPE实验研究[J]. 高分子材料科学与工程, 2007, 23(4): 192-194,198 |
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| 作者姓名： | 李又兵 申开智 |
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| 作者单位： | 重庆工学院材料科学与工程学院,重庆,400050;四川大学高分子科学与工程学院,高分子材料工程国家重点实验室,四川,成都,6100654 |
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| 基金项目： | 国家自然科学基金(50473053,10590352)，重庆市科委重大项目(CSTC,2005AA3012-5)，重庆市科委资助项目(CSTC,2006BB4396) |
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| 摘 要： | 利用自行研制的低频振动注射实验装置,研究振动注射成型工艺对HDPE哑铃试样的力学性能的影响。与常规注射相比,低频振动注射能明显改善试样的拉伸强度,实现注射试样的自增强。在0 Hz~0.93 Hz之间增加振动频率能明显提高试样的强度,断裂伸长率下降;当大于0.93 Hz,频率增加对拉伸强度的改变不大,断裂伸长率有明显的回升。压力振幅的增加可以明显地改善注射试样的屈服强度,HDPE 6100M试样屈服强度由39.8 MPa增加到60.6 MPa,增加的百分数为52.3%,断裂伸长率同时有所下降。SEM显示振动注射有利于片晶顺着流动方向行式排列,并具有明显的串晶结构。
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| 关 键 词： | 低频振动注射 高密度聚乙烯 自增强 串晶 |
| 文章编号： | 1000-7555（2007）04-0192-03 |
| 修稿时间： | 2006-05-032007-01-05 |
Study on Self-Reinforced HDPE Prepared by Low Frequency Vibration Injection Molding |
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| LI You-bing,SHEN Kai-zhi. Study on Self-Reinforced HDPE Prepared by Low Frequency Vibration Injection Molding[J]. Polymer Materials Science & Engineering, 2007, 23(4): 192-194,198 |
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| Authors: | LI You-bing SHEN Kai-zhi |
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| Affiliation: | 1. College of Material Science and Engineering, Chongqing Institute of Technology, Chongqing 400050, China ; 2. College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China |
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| Abstract: | Used by the low-frequency vibration injection-molding device,the effects of vibration injection molding on mechanical properties of dumbbell specimen were investigated.Processed at the constant vibration pressure amplitude,low range of frequency(below 0.93Hz) is favorable to the increase of yield strength with part of plastics lost,and in the high range of frequency(0.93 Hz
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| Keywords: | low-frequency vibration injection molding HDPE self-reinforcement shish-kebab |
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