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

作者：Ren Yuanlin^*; Cheng Bowen; Xu Ling; Li Zhenhuan; Jiang Aibing; Lu Youcai

来源：Acta Chimica Sinica, 2009, 67(18): 2127-2132.

• O,O-diethyl-O-allyl thiophosphate
• fire retarded polyacrylonitrile
• thermal decomposition
• kinetics

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 O(2) 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(alpha) = -ln(1 - alpha), and the reaction order being 1.

• 出版日期2009-9-28
• 单位天津工业大学