合成材料老化与应用2024，Vol.53Issue(6)：12-15,46,5.
邻苯二酚/聚乙烯亚胺共沉积修饰埃洛石制备耐老化天然橡胶
Preparation of Aging Resistant Rubber by Catechol/Polyethylenimine Co-deposition Modified Halloysite
摘要
Abstract
Natural rubber products undergo aging during use,leading to a decline in physical,chemical,and mechanical properties,which results in the loss of their service value.The addition of antioxidants can effectively enhance the rubber's resistance to aging,but an excessive amount of antioxidants can easily lead to the"blooming"phenomenon.This study uses halloysite loaded with antioxidant RD to extend the service time of the antioxidant and modifies the halloysite with catechol/polyethylenimine to increase the binding force between the halloysite and natural rubber.The results show that when the ratio of antioxidant RD to halloysite is 3:1,the loading rate reaches 11.3％,which is the best loading effect.When the catechol/polyethylenimine modification time is 24 hours,the surface modification is the most uniform and the effect is the best.After aging at 90 ℃ for 7 days,compared to rubber directly added with the same amount of RD,the composite rubber with 40 parts of catechol/polyethylenimine-modified loaded antioxidant RD halloysite and 1.5 parts of free RD antioxidant exhibited the best retention of mechanical properties.Scanning electron microscopy results showed a significant improvement in the blooming phenomenon,indicating that the catechol/polyethylenimine-modified loaded RD halloysite can effectively enhance the aging resistance of natural rubber.关键词
橡胶老化/防老剂/埃洛石纳米管/酚胺修饰/喷霜Key words
rubber aging/antioxidant/halloysite nanotubes/catechol/polyethylenimine modification/frosting分类
化学化工引用本文复制引用
谢冠春,郝明正,刘冰肖,刘羽玲,林绍泽,谭善兴,刘显勇,王忠强..邻苯二酚/聚乙烯亚胺共沉积修饰埃洛石制备耐老化天然橡胶[J].合成材料老化与应用,2024,53(6):12-15,46,5.基金项目
2023年中塑公司-太原工业学院产学研合作项目(项目编号:820668). （项目编号:820668）
