不饱和聚酯树脂的热分解动力学研究  

Study on the Thermal Decomposition Kinetics of Unsaturated Polyester Resin

作　　者：倪卓 王英浩 罗汉伟 张航 夏邦宇 段骁航 张硕 NI Zhuo;WANG Ying-hao;LUO Han-wei;ZHANG Hang;XIA Bang-yu;DUAN Xiao-hang;ZHANG Shuo(College of Chemistry and Environmental Engineering,Shenzhen University,Shenzhen 518071,China;Shenzhen Yuezhong Lusheng Environmental Protection Technology Co.,Ltd.,Shenzhen 518000,China)

机构地区：[1]深圳大学化学与环境工程学院,广东深圳518071 [2]深圳市越众绿盛环保科技有限公司,广东深圳518000

出　　处：《化学与粘合》2021年第1期1-4,共4页Chemistry and Adhesion

基　　金：国家自然科学基金面上项目(编号:51378315)。

摘　　要：以不饱和聚酯树脂(UPR)、苯乙烯(St)和固化剂制备样品A;以UPR、St、固化剂、抗氧化剂和抗紫外剂制备样品B。通过热重分析法(TG)来研究UPR的热分解动力学以及抗氧化剂和抗紫外剂对UPR热分解反应的影响。运用Coats-Redfern和Ozawa模型得到UPR热分解反应动力学参数。结果表明:样品A在10%~30%的失重率下反应活化能在58~77kJ/mol之间;样品B在10%~30%的失重率下反应活化能在100~112kJ/mol之间。抗氧剂和抗紫外剂的加入使UPR的热分解需要更高的活化能,增强了UPR的耐热性。UPR热分解反应为一级反应,抗氧剂和抗紫外剂对UPR热分解反应级数没有影响。The sample A is prepared with unsaturated polyester resin(UPR), styrene(St)and curing agent;The sample B is prepared with UPR,St, curing agent, antioxidants and anti-ultraviolet agent. The thermogravimetry(TG)is used to study the thermal decomposition kinetics of UPR and the effects of the antioxidant and the anti-ultraviolet agent on the thermal decomposition of UPR. The Coats-Redfern and Ozawa models are used to ob-tain the kinetics parameters of the thermal decomposition reaction of UPR. The results show that the reaction activation energy of sample A is between58 and 77 kJ/mol at a weight loss rate of 10% to 30%;the reaction activation energy of sample B is between 100 and 112 kJ/mol at a weight loss rate of 10% to 30%. With the addition of antioxidant and anti-ultraviolet agent, the thermal decomposition of UPR needs higher activation energy, and the heat resistance of UPR is enhanced. The thermal decomposition of UPR is a first-order reaction, which is independent of antioxidant and anti-ultravi-olet agent.

关 键 词：不饱和聚酯树脂 热重分析 热分解动力学 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]