面向可持续发展的高分子科学教学实验设计:含席夫碱型动态共价键的可修复热固性材料的制备与表征  

Experimental Design for Teaching Polymer Science for Sustainable Development:Preparation and Characterization of Repairable Thermoset Materials Containing Schiff Base Type Dynamic Covalent Bonds

作　　者：孙璐璐 万雨卓 高明星 肖明月 李相元[1,2] 冯岸超 张立群[1,3] SUN Lu-lu;WAN Yu-zhuo;GAO Ming-xing;XIAO Ming-yue;LI Xiang-yuan;FENG An-chao;ZHANG Li-qun(School of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Polymer Science and Engineering Experiment Center,Beijing University of Chemical Technology,Beijing 100029,China;Center of Advanced Elastomer Materials,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]北京化工大学高分子科学与工程教学实验示范中心,北京100029 [3]北京化工大学先进弹性体材料研究中心,北京100029

出　　处：《高分子通报》2023年第4期521-528,共8页Polymer Bulletin

摘　　要：可自修复、可重复利用的热固性材料的设计与开发,是近年高分子材料的研究热点之一。本着为高分子教学实验探索更多可能性的初衷,本工作采用对苯二甲醛、双官能度聚醚胺和三官能度聚醚胺为原料,构建了席夫碱型的交联网络结构,成功制备了一种可自修复、可重塑的热固性材料。由于材料中含有大量的亚胺键(—C=N—),在中温(80~100℃)下发生快速且可逆的亚胺网络重排反应,材料表现出良好的自修复和重塑行为。实验条件温和且操作简便,适合作为材料类教学实验和中学生科普实验进行推广。The design and development of self-healing and reusable thermosetting materials became one of the hot topics in polymer materials study in recent years.In this paper,terephthalaldehyde,dipolyetheramine and ternary polyetheramine were employed as the raw materials to prepare such kind of thermosetting materials with Schiff base-type cross-linked network structure.The materials showed great self-healing and remodeling behavior due to the rapid and reversible imine network rearrangement reaction occurs at the temperature of 80~100℃among the large amount of imine bonds(-C=N-).Owing to the advantages of mild reaction conditions and convenient operations,the procedure is suitable to be promoted as a teaching experiment for material majors and apopular science experiment for high school students.

关 键 词：动态共价键 席夫碱键 交联 自修复 重塑 实验教学 

分 类 号：TQ317-4[化学工程—高聚物工业] G642.4[文化科学—高等教育学]