| HIGH VISCOUS STRESS OF ORIENTED POLYOLEFINS UNDER UNIAXIAL TENSILE DEFORMATION |
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| 作者姓名： | Bing Na Qin Zhang Hong Yang Qiang Fu Yong-feng Men |
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| 作者单位： | [1]Department of Polymer Science ＆ Materials, Sichuan University, State Key Laboratory of Polymer Materials Engineering, Chengdu 610065, China [2]Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022, China |
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| 基金项目： | 国家自然科学基金
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国家重点基础研究发展计划(973计划) |
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| 摘 要： | In this communication, by means of stress relaxation experiments, the viscous stress at various strains during tensile deformation of oriented polyolefin samples including high density polyethylene （HDPE）, linear low density polyethylene （LLDPE） and isotactic polypropylene （iPP）, has been determined. The viscous stress in the oriented samples takes up to 50%-70% of the total stress, which is unusually high compared with their isotropic counterparts. The unusual high viscous stress was discussed based on mainly the existence of shish structure in oriented polyolefins, which could enhance the inter-lamella coupling significantly.
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| 关 键 词： | 取向 聚烯烃 单轴向张力形变 粘性应力 |
| 收稿时间： | 2006-06-05 |
| 修稿时间： | 2006-08-18 |
HIGH VISCOUS STRESS OF ORIENTED POLYOLEFINS UNDER UNIAXIAL TENSILE DEFORMATION |
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| Bing Na Qin Zhang Hong Yang Qiang Fu Yong-feng Men.HIGH VISCOUS STRESS OF ORIENTED POLYOLEFINS UNDER UNIAXIAL TENSILE DEFORMATION[J].Chinese Journal of Polymer Science,2007,0(3):285-290. |
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| Authors: | Bing Na Qin Zhang Hong Yang Qiang Fu Yong-feng Men |
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| Institution: | Department of Polymer Science &; Materials, Sichuan University, State Key Laboratory of Polymer Materials Engineering, Chengdu 610065, ChinaChangchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022, China |
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| Abstract: | In this communication, by means of stress relaxation experiments, the viscous stress at various strains during tensile deformation of oriented polyolefin samples including high density polyethylene (HDPE), linear low density polyethylene (LLDPE) and isotactic polypropylene (iPP), has been determined. The viscous stress in the oriented samples takes up to 50%-70% of the total stress, which is unusually high compared with their isotropic counterparts. The unusual high viscous stress was discussed based on mainly the existence of shish structure in oriented polyolefins, which could enhance the inter-lamella coupling significantly. |
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| Keywords: | Viscous stress Polyolefin Tensile deformation TENSILE DEFORMATION POLYOLEFINS ORIENTED STRESS VISCOUS coupling based existence structure polyolefins high isotropic total isotactic polypropylene LLDPE linear low density polyethylene HDPE viscous |
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