抗氧剂对聚亚苯基砜热稳定性影响
杨硕123，叶少勇12，高红军12，孙学科12，姜苏俊12，曹民12，冯彦洪3
1.金发科技股份有限公司，广东省特种工程塑料重点实验室，广州 510663； 2珠海万通特种工程塑料有限公司，广东珠海 519050； 3.华南理工大学，聚合物新型成型装备国家工程研究中心，聚合物成型加工工程教育部重点实验室，广州 510641
Effect of Antioxidants on the Thermal Stability of Poly(phenylene sulfone)
Yang Shuo123, Ye Shaoyong12, Gao Hongjun12, Sun Xueke12, Jiang Sujun12, Cao Min12, Feng Yanhong3
1. Kingfa Science and Technology Co. Ltd., Guangdong Key Laboratory for Specialty Engineering Plastics, Guangzhou 510663, China; 2. Zhuhai Vanteque Specialty Engineering Plastics Co.Ltd., Zhuhai 519050, China; 3. National Engineering Research Center of Novel Equipment for Polymer Processing, Key Laboratory of Polymer Processing Engineering of the Ministry of Education, South China University of Technology, Guangzhou 510641, China
摘要：为了解决聚亚苯基砜(PPSU)加工过程中强剪切以及瞬时高温导致材料发生降解、黄变的问题，在PPSU挤出过程中加入耐高温抗氧剂(P-EPQ)制备了PPSU/P-EPQ材料。热重分析测试显示，加入质量分数0.5%的抗氧剂后，PPSU在氮气下的热分解温度(Td2%)提高了3.7℃，在空气氛围下的Td2%提高12.5℃。进一步利用Kissinger方法分析了PPSU和PPSU/P-EPQ材料的非等温热分解动力学。计算结果显示，加入抗氧剂之后，PPSU在氮气下的热分解表观活化能由113 kJ/mol提升至220 kJ/mol，在空气下的热分解表观活化能由275 kJ/mol提升至318 kJ/mol，材料的热稳定性明显提高。
Abstract：In order to solve the problem of poly(phenylene sulfone) (PPSU) degradation and yellowing caused by high shear and instantaneous high temperature during processing, PPSU/P-EPQ material was prepared by adding high-temperature antioxidant during the extrusion. Thermogravimetric analysis shows that after adding 0.5wt% antioxidant, the thermal decomposition temperature Td2% of PPSU under nitrogen was increased by 3.7℃, and Td2% under air atmosphere is increased by 12.5℃. Furthermore, the non-isothermal thermal decomposition kinetics of PPSU and PPSU/P-EPQ materials are analyzed using Kissinger method. The calculation results show that the apparent activation energy of thermal decomposition of PPSU under nitrogen increases from 113 kJ/mol to 220 kJ/mol by adding the antioxidant, and the apparent activation energy of thermal decomposition under air increases from 275 kJ/mol to 318 kJ/mol, which significantly improves the thermal stability of the material.
关键词：聚亚苯基砜；抗氧剂；热稳定性
Keywords：poly(phenylene sulfone); antioxidant; thermal stability
基金：广州市科技计划项目(201906010019)
本文引用格式：
杨硕，叶少勇，高红军，等.抗氧剂对聚亚苯基砜热稳定性影响[J].工程塑料应用，2020，48(12)：96-101.
Yang Shuo，Ye Shaoyong，Gao Hongjun，et al. Effect of antioxidants on the thermal stability of poly(phenylene sulfone)[J]. Engineering Plastics Application，2020，48(12)：96-101.
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