新型三元复配抗氧体系的设计及其在煤基均聚PP中的应用  

Design and application of new ternary composite antioxidant system for coal-based polypropylene

作　　者：郑鹏程 李瑞龙 陈凑喜 张守玉 姜如愿 陈同海 宋程鹏 焦旗 ZHENG Pengcheng;LI Ruilong;CHEN Couxi;ZHANG Shouyu;JIANG Ruyuan;CHEN Tonghai;SONG Chengpeng;JIAO Qi(Institute of Coal Chemical Industry Technology,China Energy Group Ningxia Coal Co,Ltd,Yinchuan 750411,China;Nanjing Advanced Thermoplastic Composites Co,Ltd,Nanjing 210034,China;China Energy Group Ningxia Coal Co,Ltd,Yinchuan 750011,China)

机构地区：[1]国家能源集团宁夏煤业有限责任公司煤炭化学工业技术研究院,银川750411 [2]南京特塑复合材料有限公司,南京210034 [3]国家能源集团宁夏煤业有限责任公司,银川750011

出　　处：《中国塑料》2021年第12期1-8,共8页China Plastics

基　　金：国家能源集团宁夏煤业有限责任公司科技创新项目“新型抗氧体系在均聚聚丙烯中的应用研究”(NXMY-19-16)。

摘　　要：设计了一系列由主抗氧剂、辅助抗氧剂、碳自由基捕捉剂组成的不同种类、不同配比抗氧剂体系,并将其用于煤基均聚聚丙烯(PP)的抗热氧老化性能改性中。其中以巴斯夫抗氧剂Irganox■1010、Irgafos■168主辅抗氧剂质量比1∶1为对比基准,通过测试并对比添加新型三元复配抗氧体系改性PP的氧化诱导时间(OIT)、黄色指数、熔体流动速率、力学性能等性能指标,从而开发煤基均聚PP的最佳耐热氧老化助剂配方。结果表明,当主抗氧剂为Irganox■1010、辅抗氧剂为Irgafos■168质量比为1∶1并与羟胺类抗氧剂Revonox■420复合使用时,改性PP的OIT最长为9.8 min,黄色指数为1.3,熔体流动速率为10.7 g/10 min,综合性能最佳;当主抗氧剂为Irganox■1010、辅抗氧剂为Irgafos■168质量比为1∶2时,改性PP的抗黄变效果最好,由此设计并优化的抗氧剂体系及其配比对煤基均聚PP的耐长期热氧老化改性配方设计具有重要的启示。A series of novel ternary composite antioxidant systems with different types and mass ratios were designed.These antioxidant systems were based on the BASF antioxidant Irganox■1010 as a main antioxidant and Irgafos■168 as an auxiliary antioxidant at a basis mass ratio of 1∶1 together with Revonox■420 as a carbon radical capture agent.Such antioxidant systems were applied for the modification of coal-based homopolypropylene(homo-PP)to enhance its thermo-oxidative aging performance.The resultant modified homo-PP was evaluated with oxidation induction time(OIT),yellow in-dex,melting flow rate and mechanical performance.The results indicated that the modified homo-PP achieved optimum anti-oxidative performance by means of an antioxidant composite system based on Irganox■1010,Irgafos■168,and Revo-nox■420.This composite antioxidant system resulted in the longest oxidation induction time of 9.8 min,a yellow index of 1.3,and a melting flow rate of 10.7 g/10 min for the modified homo-PP.Moreover,the modified homo-PP gained an optimum anti-yellowing effect at a mass ratio of Irganox■1010 and Irgafos■168 of 1∶2.These results provide a good reference for the design and development of high-efficient and long-term antioxidant system for the coal-based homo-PP.

关 键 词：煤基均聚聚丙烯 抗氧剂 热氧老化 氧化诱导时间 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]