Acta Chimica Sinica ›› 2009, Vol. 67 ›› Issue (18): 2127-2132. Previous Articles     Next Articles

Original Articles


任元林*,a,b 程博闻a 徐 玲b 李振环b 蒋艾兵b 鲁友财b   

  1. (a天津工业大学纺织学院 天津 300160)
    (b天津工业大学天津市改性与功能纤维重点实验室 天津 300160)
  • 收稿日期:2009-01-20 修回日期:2009-03-25 出版日期:2009-09-28 发布日期:2009-12-31
  • 通讯作者: 任元林

Non-isothermal Decomposition Kinetics of Novel Fire Retarded Polyacrylonitrile Copolymer in Air

Ren, Yuanlin*,a,b Cheng, Bowena Xu, Lingb Li, Zhenhuanb Jiang, Aibingb
Lu, Youcaib   

  1. (a School of Textile, Tianjin Polytechnic University, Tianjin 300160)
    (b Tianjin Municipal Key Laboratory of Fiber Modification and Functional Fiber, Tianjin Polytechnic University, Tianjin 300160)
  • Received:2009-01-20 Revised:2009-03-25 Online:2009-09-28 Published:2009-12-31
  • Contact: Ren, Yuanlin

A novel fire retarded polyacrylonitrile copolymer (FR-PAN) was obtained via copolymerization of acrylonitrile with O,O-diethyl-O-allyl thiophosphate (DATP). The non-isothermal decomposition kinetics of the FR-PAN in O2 were studied by TG-DTG techniques, and the fire retardance of the FR-PAN was investigated by the limiting oxygen index (LOI) method. The activation energies of the major thermal decomposition of the FR-PAN were determined by using the Kissinger method and Flynn-Wall-Ozawa (FWO) method, respectively. With the selection of different mechanism models, the decomposition mechanism of the FR-PAN was obtained by using the Satava-Sestak method. The results show that the activation energies for the major thermal decomposition step of the FR-PAN are 119.62 kJ•mol-1 with the Kissinger method and 123.99 kJ•mol-1 with the FWO method, respectively. And the thermal decomposition mechanism of the major decomposition step of the FR-PAN is random nucleation and growth, with the mechanism function being G(α)=-ln(1-α), and the reaction order being 1.

Key words: O,O-diethyl-O-allyl thiophosphate, fire retarded polyacrylonitrile, thermal decomposition, kinetics