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| 聚丙烯腈原丝的预氧化过程研究 | |
| 引用本文： | 袁慧五,王源升,余红伟,梅永佳,葛宝. 聚丙烯腈原丝的预氧化过程研究[J]. 材料开发与应用, 2011, 26(4): 51-55 |
| 作者姓名： | 袁慧五 王源升 余红伟 梅永佳 葛宝 |
| 作者单位： | 1. 海军工程大学理学院化学与材料系,湖北武汉,430033 2. 海军工程大学理学院化学与材料系,湖北武汉430033;高分子材料工程国家重点实验室,四川大学高分子研究所,四川成都610065 3. 高分子材料工程国家重点实验室,四川大学高分子研究所,四川成都610065 |
| 基金项目： | 国家自然科学基金支助项目，高分子材料工程国家重点实验室(四川大学)开放课题 |
| 摘 要： | 采用密度分析、红外吸收光谱(FT-IR)分析仪、广角X射线衍射(WXRD)仪、差示扫描量热(DSC)分析仪和扫描电子显微镜( SEM)等手段,系统地研究了聚丙烯腈(PAN)原丝预氧化过程中的结构变化.结果表明,在预氧化过程中,PAN原丝的密度和相对环化率均增加,结晶尺寸先变大后变小,结晶度降低,说明环化反应先主要在非晶... |
| 关 键 词： | PAN原丝 预氧化 密度 结晶尺寸 预氧化时间 |
Study on Stabilization Process of Polyacrylonitrile Precursor Fibers |
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| YUAN Hui-wu,WANG Yuan-sheng,YU Hong-wei,MEI Yong-jia,GE Bao. Study on Stabilization Process of Polyacrylonitrile Precursor Fibers[J]. Development and Application of Materials, 2011, 26(4): 51-55 | |
| Authors: | YUAN Hui-wu WANG Yuan-sheng YU Hong-wei MEI Yong-jia GE Bao |
| Affiliation: | 1.Department of Chemistry and Material,Naval University of Engineering,Wuhan 430033,China; 2.State Key Laboratory of Polymer Material Engineering,Polymer Research Institute of Sichuan University,Chengdu 610065,China) |
| Abstract: | The structure evolution of polyacrylonitrile(PAN) precursor fibers during stabilization process was studied systemically by density,fourier transform infrared spectroscopy(FT-IR),wide-angle X-ray diffraction(WXRD),differential scanning calorimeter(DSC) and scanning electron microscope(SEM).The results showed that the density and relative cyclization index of PAN fibers was increased,the crystallite size was increased at first and decreased later and the crystallinity was decreased,which manifested that the cyclization reaction firstly occurred in amorphous region,and then in ordered region and as a result,the ladder cyclized structure was formed.The reaction became violent at 240-280℃ according to DSC test.It was found that with the stabilization for 90 min the stabilization extent was better. |
| Keywords: | PAN precursor fibers Stabilization Density Crystallite size Stabilization time |
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