文献类型：期刊文献

中文题名：XRD研究芳基乙炔聚合物炭化过程中的结构变化

英文题名：X-RAY DIFFRACTION STUDIES OF PYROLYTIC PRODUCTS OF POLYARYLACETYLENE

作者：丁学文[1];陈东[1];曹建华[1];庄元其[1];王俊[1];焦扬声[1]

机构：[1]华东理工大学功能复合材料研究室,上海200237

年份：2002

卷号：18

期号：2

起止页码：127

中文期刊名：高分子材料科学与工程

外文期刊名：Polymer Materials Science & Engineering

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：芳基乙炔聚合物;炭化过程;X射线衍射;结构;XRD

外文关键词：polyarylacetylene; X ray diffraction; C/C composites; pyrolytic process

摘要：根据热失重曲线、元素分析和 X射线衍射分析了芳基乙炔聚合物炭化过程中的结构变化。结果表明 ,芳基乙炔聚合物在 90 0℃炭化时 ,成碳率高达 84 % ;随着炭化温度的升高 ,碳含量增加 ,H/ C比减小。在 6 0 0℃以前 ,随着炭化温度的升高 ,聚合物原有的序态结构逐渐被破坏 ;6 0 0℃以后 ,随着炭化温度的升高 。
The effect of pyrolytic temperature on the microstructure changes, mass loss and H/C ratio of polyarylacetylene was studied by thermal gravity analysis, element analysis and X ray diffraction. The results show that polyarylacetylene gives 84% char yield when pyrolysis at 900 ℃;with the increase of pyrolytic temperature, the ratio of H/C decreases and the carbon content and the degree of graphilization of pyrolytic sample increases. At the temperature range of 350~600 ℃, with the increase of pyrolytic temperature, the initial structure of polymer was destructed gradually; and when the pyrolytic temperature higher than 600 ℃, with the increase of pyrolytic temperature, a new structure was formed gradually.