不同抗氧剂对聚丙烯热氧稳定性的影响  

Impact of Different Antioxidants on Thermal Oxidative Stability of Polypropylene

作　　者：赖仲平 韩婉珊 Lai Zhongping;Han Wanshan(Guangdong Decro Film New Material Co.,Ltd.,Foshan,Guangdong 528300,China;Guangdong Decro Packaging Materials Co.,Ltd.,Foshan,Guangdong 528300,China)

机构地区：[1]广东德冠薄膜新材料股份有限公司,广东佛山528300 [2]广东德冠包装材料有限公司,广东佛山528300

出　　处：《塑料助剂》2025年第1期76-80,共5页Plastics Additives

摘　　要：采用转矩流变仪混炼的方法考察了抗氧剂对聚丙烯热氧稳定性的影响,测定了各个试样的熔体流动速率、黄度指数、氧化诱导期、DSC指标和色差值。实验结果表明:四种抗氧剂都与聚丙烯具有良好的相容性,并对聚丙烯的熔融温度和结晶温度无影响。此外,胺类抗氧剂具有优异的抗氧化性能和短期热氧稳定性,但长期受温度等因素影响会分解变色,从而限制其使用场景,而受阻酚类抗氧剂具有优异的长期热氧稳定性和加工稳定性。In this paper,the method of mixing using a torque rheometer mixed has been used to study the effect of antioxidants on the thermal oxidative stability of polypropylene,and the melt flow rate(MFR),yellowness index(YI),oxidation induction time(OIT),DSC indicator,color difference(ΔE)of each sample.The experimental results show that the four antioxidants have good compatibility with polypropylene and have no effect on the melting temperature and crystallization temperature of polypropylene.In addition,amine antioxidants have excellent antioxidant performance and short-term thermal oxidative stability,but it will decompose color when it is affected by factors such as temperature,thereby limiting its use scenarios,and hindered phenolic antioxidants have excellent long-term thermal oxidative stability and processing stability.

关 键 词：抗氧剂 聚丙烯 热氧稳定性 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]