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利用热重分析仪(TGA)研究了氯磺化聚乙烯(CSM)在氮气和空气中的热降解行为,探讨了气氛对CSM热降解的影响。研究表明,CSM的热分解过程分为两个失重平台,随着升温速率的升高,聚合物的分解温度逐渐升高。分别用Kissinger和Flynn-Wal-lOzawa方法对CSM中第一个失重平台(磺酰氯基团)的降解行为进行了研究,得到其活化能E、指前因子A、反应级数n、相关系数r。发现在同种气氛条件下,Flynn-Wal-lOzawa方法所得的活化能比Kissinger方法求出的活化能略高,在空气气氛中求得的活化能要低于氮气气氛中的活化能。

The thermal degradation behaviors of chlorosulfonated polyethylene in nitrogen and in air have been studied by thermogravimetry analysis(TGA) and digital thermogravimetry(DTG).The effect of atmosphere on the thermal degradation behaviors of chlorosulfonated polyethylene was discussed.The results show that the thermal degradation of chlorosulfonated polyethylene in air is a two stage reaction.With the increase of heating rate(β),the temperature of degradation is rising gradually.The activation energy E,pre-exponential factor A,reaction order n and correlation coefficient r of chlorosulfonated polyethylene(CSM) can be calculated by taking the advantage of the methods of Kissinger and Flynn-Wall-Ozawa to research the degradation of the first stage.The activation energy E by Ozawa method is slightly higher than that by Kissinger method in the same ambiance.But activation energy E in air is lower than that in nitrogen.

参考文献

[1] 王哲,边玉玲,孙志坚,张明耀,杨海东,张会轩.水相悬浮法合成氯磺化聚乙烯的结晶动力学[J].高分子材料科学与工程,2009(07):80-82,86.
[2] 王哲,边玉玲,倪宏哲,张明耀,张会轩.氯磺化聚乙烯的降解动力学[J].高分子材料科学与工程,2010(02):99-102.
[3] Wang, Z;Ni, HZ;Bian, YL;Zhang, MY;Zhang, HX .The Preparation and Thermodynamic Behaviors of Chlorosulfonated Polyethylene[J].Journal of Applied Polymer Science,2010(4):2095-2100.
[4] Hablot, E;Bordes, P;Pollet, E;Averous, L .Thermal and thermo-mechanical degradation of poly(3-hydroxybutyrate)-based multiphase systems[J].Polymer Degradation and Stability,2008(2):413-421.
[5] Chiu, YC;Ma, CCM;Liu, FY;Chou, IC;Chiang, CL;Yang, JC .Thermal Degradation and Flammability of P/Si Polysilsesquioxane Epoxy Nanocomposites[J].Journal of Applied Polymer Science,2009(3):1435-1443.
[6] Lu CL.;Cui ZC.;Yang B.;Su XP.;Huo CS.;Shen JC. .Polymerization mechanisms and curing kinetics of novel polumercaptan curing system containing epoxy/nitrogen[J].Journal of Applied Polymer Science,2002(3):589-595.
[7] 章家立,廖维林,崔国娣,王甡.刚性聚芳醚腈热分解动力学研究[J].高分子材料科学与工程,2000(01):130-132.
[8] 黄年华,张强,李治华.侧基含磷共聚酯的热降解动力学及热稳定性[J].高分子材料科学与工程,2009(02):105-108.
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