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Reaction kinetics during the thermal stabilization process of polyacrylonitrile fibers
Author(s): 
Pages: 87-91
Year: Issue:  1
Journal: Journal of Beijing University of Chemical Technology(Natural Science Edition)

Keyword:  聚丙烯腈纤维热稳定化动力学热行为;
Abstract: 采用"改进Coats-Redfern"法,通过差式扫描量热(DSC)研究了聚丙烯腈(PAN)纤维在惰性气氛中的热稳定化反应动力学,探索了PAN纤维在惰性气氛中的热稳定化反应机理.结果表明:在40~400℃范围内,PAN纤维在惰性气氛中的热稳定化反应总体上符合一级的反应级数模型,计算得到表观反应活化能Ea=177.1 kJ/mol;进一步分区通过分区研究和计算,提出了"三区域反应动力学模型",此模型...
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