前线聚合法制备脂肪酸环氧Vitrimer材料的研究  

Preparation of Fatty Acid Epoxy Vitrimer Materials by Frontal Polymerization

作　　者：胡国锋 杨鹏微 舒京 周建萍[1] Hu Guofeng;Yang Pengwei;Shu Jing;Zhou Jianping(School of Materials Science and Engineering,Nanchang Hangkong University,Jiangxi,330063)

机构地区：[1]南昌航空大学材料科学与工程学院,江西330063

出　　处：《当代化工研究》2024年第18期169-171,共3页Modern Chemical Research

基　　金：国家自然科学基金“基于LED光诱导前线聚合和动态交联酯键的环氧树脂基复合材料制备及前线推动和可回收调控机制研究”(项目编号:5216030164)。

摘　　要：本文研究了不同分子量二元酸改性221环氧树脂对树脂的前线聚合和固化行为的影响。对固化后Vitrimer材料的拉伸性能、热机械动态性能、应力松弛和回收性能进行研究。结果表明,随着二元酸分子量的增加,前线聚合最高温度、推动速率降低、引发时间增加。制备的Vitrimer材料随着二元酸分子量的增加,应力松弛时间增加,且可实现热压和溶剂回收。In this paper,we investigate the effect of different molecular weight dibasic acid-modified 221 epoxy resins frontal polymerization and curing behavior of the resins.Additionally,we explore the tensile properties,thermo-mechanical dynamic properties,stress relaxation,and recycling properties of the cured Vitrimer materials.Our results indicate that the maximum temperature of frontal polymerization decreased,the decrease in push rate the increase in initiation time,by the increase in molecular weight of the dibasic acid,the Vitrimer materials exhibit decrease in relaxation time with an increasing molecular weight of the dib acid.Furthermore,these materials are shown to be amenable to hot pressing and solvent recovery.

关 键 词：221环氧树脂 前线聚合 Vitrimer 

分 类 号：TQ322.4[化学工程—合成树脂塑料工业]