塑料科技2024，Vol.52Issue(2)：13-19,7.DOI:10.15925/j.cnki.issn1005-3360.2024.02.003
基于二维相关红外的环氧树脂/多壁碳纳米管复合材料固化机理研究
Study on Curing Mechanism of Epoxy Resin/Multi-Walled Carbon Nanotubes Composites Based on 2D Correlation Infrared Spectroscopy
摘要
Abstract
Multi-walled carbon nanotubes(MWCNTs)play an important role in strengthening and toughening epoxy resin(EP)materials,but the surface activity of MWCNTs is different,and their mechanical properties,dispersion and interfacial bonding are very different,which is closely related to the curing mechanism of EP composites.In order to clarify the curing mechanism of epoxy resin/multi-walled carbon nanotube(EP/MWCNTs)composites and the influence mechanism of the introduction of MWCNTs on the curing behavior of EP matrix,the analysis methods of moving window 2D correlation infrared and generalized 2D correlation infrared were used to compare and analyze the variation of characteristic functional groups of pure EP and EP/MWCNTs during the heating and curing process.The results show that the curing process of pure EP is mainly the curing reaction between EP and primary amine group,and the ring opening of EP generates a new hydroxyl group and C—H without ring tension,while the'steric hindrance effect'of EP/MWCNTs hinders the reaction process of EP in the early stage of curing,and the addition of MWCNTs has little effect on its curing mechanism.The difference is that during the curing process of EP/MWCNTs,the response of the primary amine group in the curing agent occurs before the epoxy group.关键词
多壁碳纳米管/环氧树脂/二维相关红外/固化机理Key words
Multi-walled carbon nanotubes/Epoxy resin/2D correlation infrared spectroscopy/Curing mechanism分类
通用工业技术引用本文复制引用
李璐,张贤明,周丽洁..基于二维相关红外的环氧树脂/多壁碳纳米管复合材料固化机理研究[J].塑料科技,2024,52(2):13-19,7.基金项目
重庆市教委科学技术研究计划项目(KJZD-K202303802) （KJZD-K202303802）
重庆市永川区自然科学基金项目(2023yc-jckx20078) （2023yc-jckx20078）
