基于亚胺键的香草醛基可降解环氧树脂综合性能研究  

Comprehensive Performance Study of Vanillin-Based Degradable Epoxy Resin Based on Imine Bonding

作　　者：刘云鹏 黎馨阳 刘贺晨 白怡宁 江钰哲 Liu Yunpeng;Li Xinyang;Liu Hechen;Bai Yining;Jiang Yuzhe(Hebei Key Laboratory of Green and Efficient New Electrical Materials and Equipment,North China Electric Power University,Baoding,071003,China;State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing,102206,China)

机构地区：[1]河北省绿色高效电工新材料与设备重点实验室(华北电力大学),保定071003 [2]新能源电力系统全国重点实验室(华北电力大学),北京102206

出　　处：《电工技术学报》2025年第7期2267-2281,共15页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(52377025);中央高校基本科研业务费专项资金(20226934)资助项目。

摘　　要：双酚A型环氧树脂(DGEBA)因其优异的综合性能被广泛应用于环氧绝缘电气设备中,但由于环氧树脂固化后会形成永久性的三维交联网络,导致大量电气设备退役后无法实现高效降解和回收利用,造成严重的资源浪费和环境污染。该文采用香草醛为原料,同时引入动态亚胺键制备可降解香草醛基类玻璃化环氧树脂(EDV)。将DGEBA和EDV进行共混,试验分析不同共混比例下树脂的电学、热学、力学基本服役特性,并对其降解回收利用性能进行探索。研究结果表明:当DGEBA和EDV摩尔比例为0.75:0.25时,共混树脂具有优异的热力学性能,其中玻璃化转变温度高达159℃。含EDV的环氧树脂均表现出降解和自修复特性,最快可在10h内完成降解,在180℃高温下可在1 h内完成自修复。含EDV的环氧树脂表现出优异的物理化学回收性能,回收树脂的最大电气击穿强度保持在98%以上。含动态亚胺键的香草醛类玻璃化树脂体系有望为电气设备材料的环保升级提供新的选择方向和技术支撑。Bisphenol A-type epoxy resins are widely used in epoxy-insulated electrical equipment and other fields due to their excellent comprehensive performance,but due to the formation of permanent three-dimensional cross-linking network after curing of epoxy resins,a large number of electrical equipment can not be efficiently degraded and recycled after decommissioning,which results in a serious waste of resources.In this paper,vanillin is used as the raw material to prepare bio-based epoxy resin,and at the same time,dynamic imine bonding is introduced to prepare degradable vanillin-based glassy epoxy resin(EDV),and the traditional bisphenol A-based epoxy resin(DGEBA)and vanillin-based epoxy resin are blended with different ratios,and the high-performance,degradable and recycled epoxy resin copolymers are prepared,and the curing process is analyzed in detail,and the experiments are analyzed The basic service characteristics of the resin under different blending ratios in terms of electrical,thermal and mechanical properties,and its degradation and recycling properties were explored.Firstly,in order to prepare vanillin-based epoxy resins based on imine bonding,vanillin and p-aminophenol were chosen as raw materials,and the syntheses were epoxidized and blended with conventional bisphenol A-type epoxy resins at different ratios,and MHHPA and EMIP were chosen as the curing agent and promoter,respectively,and were prepared in accordance with the curing mode of the probe,and at the same time,conventional bisphenol A-type epoxy resins were set up as the control group.Then,Fourier infrared spectroscopy tests were carried out and the results showed that the epoxy resin was correctly synthesized and fully cured.Finally,the data of different systems of epoxy resins were comparatively analyzed by thermogravimetric analysis,dynamic thermodynamic analysis,tensile bending test,comprehensive analysis of electrical properties,degradation recycling and self-repairing test to assess their applicability in the field of electrical engineer

关 键 词：类玻璃化高分子(Vitrimer) 环氧树脂 香草醛 亚胺键 降解回收 

分 类 号：TM215[一般工业技术—材料科学与工程]