XRD研究芳基乙炔聚合物炭化过程中的结构变化  

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] 

机构地区：[1]华东理工大学功能复合材料研究室,上海200237

出　　处：《高分子材料科学与工程》2002年第2期127-130,共4页Polymer Materials Science & Engineering

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.

关 键 词：芳基乙炔聚合物 炭化过程 X射线衍射 结构 XRD 

分 类 号：O632.17[理学—高分子化学]