聚丙烯腈原丝的预氧化过程研究  

Study on preoxidation process of polyacrylonitrile precursor

作　　者：杨茂伟[1] 王成国[1] 王延相[1] 何东新[1] 朱波[1] 

机构地区：[1]山东大学材料科学与工程学院,山东济南250061

出　　处：《合成纤维工业》2005年第6期5-8,共4页China Synthetic Fiber Industry

基　　金：国家自然科学基金(59783002)

摘　　要：采用透射电子显微镜(TEM)、差示扫描量热(DSC)分析仪、红外吸收光谱(FTIR)分析仪和元素分析仪等为主要手段，系统地研究了聚丙烯腈预氧化过程中结构的变化过程。结果发现：在预氧化过程中，聚丙烯腈原丝主要进行化学结构变化和形态结构的重排，首先在无定形区引发环化反应，然后扩展至有序区，最终形成耐热的梯形环化结构。预氧丝的片层组织是由原丝片层结构演变过来的，随着预氧化温度的升高，片层状形态增多。The structure evolution of polyacrylonitrile precursor during preoxidation process was studied systemically by TEM, DSC, FTIR and element analysis. The results showed that the chemical structure transformation and morphology rearrangement of polyacrylonitrile precursor were observed during preoxidation. Firstly in amorphous region occurred the cyclization, and then in ordered region ; as a result, the ladder cyclized structure was formed. The layered structure of preoxidized polyacrylonitrile fiber transformed from the layered structure of polyacrylonitrile precursor was increased with increasing preoxidation temperature, especially during the late oeriod of oreoxidation.

关 键 词：聚丙烯腈纤维 预氧化 碳纤维 结构 

分 类 号：TQ340.1[化学工程—化纤工业]