| PAN纤维中Fe的高温演变研究 |
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| 引用本文： | 刘晖,李常清,靳玉伟,郭雅明,徐樑华.PAN纤维中Fe的高温演变研究[J].北京化工大学学报(自然科学版),2010,37(4):48-52. |
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| 作者姓名： | 刘晖 李常清 靳玉伟 郭雅明 徐樑华 |
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| 作者单位： | 1北京化工大学 碳纤维及功能高分子教育部重点实验室，北京 100029; 2 吉林石化公司研究院 碳纤维研究所，吉林 吉林 132021 |
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| 摘 要： | 为了考察Fe对PAN基碳纤维的影响,在凝固成型阶段将Fe引入聚丙烯腈(PAN)初生纤维中,通过后续过程制备含Fe的原丝,经过预氧化、碳化处理后,收取不同阶段的纤维。借助电感耦合等离子体-原子发射光谱(ICP-AES)、电子探针(EPMA)、力学性能测试、热重分析等手段,表征不同热处理阶段PAN纤维中Fe的含量、微区分布的变化及对碳纤维性能的影响。结果表明,含Fe的PAN原丝经预氧化、低温碳化过程,PAN纤维中Fe的质量未发生改变,当热处理温度达到1450℃后Fe开始损失,经1550℃高温处理后Fe的质量大幅度降低;热处理温度高于1350℃后,Fe在PAN纤维的径向逐渐呈现外缘多、内部少的特点,Fe有向纤维外部迁移的趋势;Fe的存在及高温迁移,降低了碳纤维的拉伸强度,影响了碳纤维的热稳定性能。
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| 关 键 词： | PAN纤维 热处理 Fe 微区分布 性能 |
| 收稿时间： | 2009-12-21 |
Evolution of Fe in PAN fibers during heat treatment |
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| LIU Hui,LI ChangQing,JIN YuWei,GUO YaMing,Xu LiangHua.Evolution of Fe in PAN fibers during heat treatment[J].Journal of Beijing University of Chemical Technology,2010,37(4):48-52. |
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| Authors: | LIU Hui LI ChangQing JIN YuWei GUO YaMing Xu LiangHua |
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| Institution: | 1. Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029; 2. Carbon Fiber Department of the Research Iinstitute of Jilin Petrochemical Company， Jilin Jilin 132021， China |
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| Abstract: | Polyacrylonitrile (PAN) solutions were coagulated in DMSO/H2O/Fe2(SO4)3 solutions to form a PAN precursor containing Fe. PAN fibers were obtained by preoxidation and carbonization from this precursor. The content and distribution of Fe in the PAN fibers were studied by inductively coupled plasma-atomic emission spectrometry (ICP-AES) and electron probe microanalysis (EPMA). The properties of the carbon fibers were investigated,including their mechanical properties and thermogravimetric analysis. The results... |
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| Keywords: | Fe |
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