| 二次拉伸温度对PAN原丝中微孔洞形貌变化的影响 |
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| 引用本文： | 李延根,黄祖飞,王春忠. 二次拉伸温度对PAN原丝中微孔洞形貌变化的影响[J]. 吉林大学学报(理学版), 2009, 47(5): 1054-1056 |
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| 作者姓名： | 李延根 黄祖飞 王春忠 |
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| 作者单位： | 吉林大学,材料科学与工程学院,长春,130012;长春大学,理学院,长春,130022;吉林大学,材料科学与工程学院,长春,130012 |
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| 基金项目： | 国家高技术研究发展计划863项目基金,国家重点基础研究发展计划973项目基金,教育部长江学者和创新团队发展计划项目基金 |
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| 摘 要： | 利用一维多取向X射线小角散射(SAXS)方法研究二次拉伸温度对聚丙烯腈碳纤维(PAN)原丝中微孔洞形貌的影响. 结果表明, 在一定温度（2T0）加热拉伸时, PAN原丝中微孔洞的相对体积分数（V/V0）较低温时有所增加, 但其取向角（）最小, 长径比（L/2R）最大, 两者均有利于提高碳纤维的力学性能; 当拉伸温度过高时, 微孔洞形状的变化规律与之相反, 不利于提高碳纤维的力学性能.
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| 关 键 词： | PAN原丝 一维多取向X射线小角散射 微孔洞 |
| 收稿时间： | 2008-11-20 |
Influence of Secondary Stretching Temperature on Configuration Change of Microvoids in Polyacylonitrile-based Precursor Fibres |
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| LI Yan-gen,HUANG Zu-fei,WANG Chun-zhong. Influence of Secondary Stretching Temperature on Configuration Change of Microvoids in Polyacylonitrile-based Precursor Fibres[J]. Journal of Jilin University: Sci Ed, 2009, 47(5): 1054-1056 |
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| Authors: | LI Yan-gen HUANG Zu-fei WANG Chun-zhong |
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| Affiliation: | 1. College of Materials Science and Engineering, Jilin University, Changchun 130012, China;2. College of Science, Changchun University, Changchun |130022, China |
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| Abstract: | The influence of stretching temperature on the configuration of the microvoids in PAN precursor fibres was investigated by multi|orientated one|dimensional small angle X|ray scattering. The results show that though the relative content of microvoids （V/V0） is increased in some degree at the relative temperature 2T0, the oriented angle () of microvoids would be the minimal, and the ratio of the length with the diameter of microvoids (L/2R) would be the maximal. These are benefit to increasing the mechanics performance of fibers. But when the heating temperature is too high, the changes of micropores will be on the contrary. |
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| Keywords: | PAN precursor fibre multi-orientated one-dimensional SAXS microvoid |
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