| 某国产聚丙烯腈原丝的预氧化研究 |
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| 引用本文： | 杨波,张红波,汪学锋.某国产聚丙烯腈原丝的预氧化研究[J].中南大学学报(自然科学版),2011,42(11). |
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| 作者姓名： | 杨波 张红波 汪学锋 |
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| 作者单位： | 1. 中南大学粉末冶金国家重点实验室,湖南长沙,410083
2. 吉研高科技纤维有限责任公司,吉林省吉林市,132115 |
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| 基金项目： | 国家重点基础研究发展计划("973"计划)项目 |
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| 摘 要： | 在炭纤维生产线上对某国产聚丙烯腈(PAN)原丝进行预氧化处理,采用差示扫描量热法(DSC)对该国产聚丙烯腈原丝进行热分析,确定预氧化温度,采用元素分析仪、傅里叶转换红外光谱仪(FTIR)和X线衍射仪(XRD)等检测方法对不同预氧化阶段的纤维进行研究.研究结果表明:随着预氧化温度的升高,纤维的密度逐渐增加,最终密度达到1.366 g/cm3；纤维的含氧量随温度的升高而增加,且温度越高,增加越快,而其他元素变化缓慢；FTIR结果显示2 243.1 cm-1(C≡N)振动峰逐渐降低,新出现的1 612.2 cm-1(C=N)振动峰逐渐加强,表明纤维内线性分子链向耐热的梯形结构转变；X线衍射结果显示17°和29°附近的衍射峰强度逐渐减小,由较宽的衍射峰替代,表明纤维内发生收缩解取向,原序态结构消失,形成堆积较混乱的且不规则的梯形聚合物.
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| 关 键 词： | 聚丙烯腈原丝 预氧化 炭纤维 |
Study on pre-oxidative stabilization of domestic polyacrylonitrile fibers |
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| YANG Bo,ZHANG Hong-bo,WANG Xue-feng.Study on pre-oxidative stabilization of domestic polyacrylonitrile fibers[J].Journal of Central South University:Science and Technology,2011,42(11). |
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| Authors: | YANG Bo ZHANG Hong-bo WANG Xue-feng |
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| Institution: | YANG Bo1,ZHANG Hong-bo1,WANG Xue-feng2 (1.State Key Laboratory of Power Metallurgy,Central South University,Changsha 410083,China,2.Jilin Jiyan High-Tech Fibers CO.,LTD,Jilin 132115,China) |
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| Abstract: | The domestic polyacrylonitirle(PAN) fibers were pre-oxidated in the production line of carbon fibers.Thermal analysis of domestic polyacrylonitrile fibers was carried out by means of DSC,in order to define the temperature of stabilization.And the study of PAN-based fibers in the different pre-oxidation stages was investigated by means of elemental analyzer,FTIR,and X-ray diffractrometry.The results indicate that the density of fibers increases with the increase of temperature,and the density is up to 1.366 ... |
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| Keywords: | polyacrylonitrile fibers pre-oxidation carbon fibers |
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