【作者】 李思东； 彭政； 余和平； 钟杰平； 魏永才；

【Author】 LI Sidong,PENG Zheng,YU Heping,ZHONG Jieping and WEI Yongcai South China Tropical Agricultural Product Processing Research Institute,524001 Zhanjiang

【机构】 华南热带农产品加工设计研究所；

【摘要】 <正>氯化天然橡胶(CNR)是由天然橡胶(NR)通过溶液法或乳液法氯化改性而制取的。由于它有优良的成膜能力及独特的耐腐蚀性,抗渗透性,阻燃性,热稳定性,因而广泛应用于船舶漆,集装箱漆,防腐漆,胶粘剂,油墨添加剂等方面。对CNR的制备,结构与氯化机理的研究,前人已有大量报道,而对CNR降解的研究则报道不多。本文利用FTIR-TG研究了CNR的热降解和热氧降解过程,分析了CNR在降解过程中重量损失和各阶段逸出气体成分。讨论了反应气氛对CNR降解过程的影响。结果与讨论一、CNR的热氧降解更多还原

【Abstract】 Fourier transform infrared spectroscopy（FTIR） and thermogravimetry（TG） were used to investigate the thermal-oxidative and thermal degradation proceses of chlorinated natural rubber（CNR）.The results showed that themal degradation of CNR was a reaction of one-step:at 160℃—390℃,dehydrochlorination took place in CNR and at 390℃,there were still 35%of residues existed in the original CNR and the residues were in a comparatively stable state.The thermal-oxidative degradation of CNR was a reaction of two-step:at 160℃—390℃,HC1 and CO₂ were produced,at 390—575℃,the decomposition product was CO₂ and decomposition was fully completed.更多还原