具有自修复和形状记忆功能的羧基丁腈橡胶的制备  

Preparation of carboxylated nitrile rubber with self-healing and shape memory function

作　　者：王琳 孙文硕 杜爱华[1] WANG Lin;SUN Wen-shuo;DU Ai-hua(Key Laboratory of Rubber-Plastics of Ministry of Education,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《合成橡胶工业》2022年第2期145-145,共1页China Synthetic Rubber Industry

基　　金：Supported by Natural Science Foundation of China(51073085).

摘　　要：采用共价键和非共价键结合的方法制备具有自修复和形状记忆功能的羧基丁腈橡胶。首先利用羧基和胺基的酸碱反应来构建离子键和氢键可逆超分子网络,然后通过硫醇-烯反应构建共价交联网络。考察三硫醇交联剂(TMPT)的用量对羧基丁腈橡胶性能的影响。结果表明,随TMPT用量的增加羧基丁腈橡胶的扯断伸长率降低。当不加入TMPT时材料的拉伸强度为1.63 MPa;在120 ℃下修复1 h,自修复效率高达约98%。当加入质量分数为2%的TMPT时,羧基丁腈橡胶拥有最高的拉伸强度,接近2.90 MPa,但在120 ℃下自修复效率仍能达到约84%,且具有约95%的高应变固定率和约90%的应变回复率,表现出优异的形状记忆性能。Rubbers are susceptible to damage in the form of microcracks due to light and heat,which will shorten the span-time of life.The self-healing rubbers can repair microcracks spontaneously or with the help of external stimulation,so as to improve the stability and service life of materials.In this paper,a strategy of combining covalent and non-covalent cross-links to construct multifunctional rubber materials with intelligent self-healing and shape memory property was demonstrated.The materials were prepared by carboxylated nitrile rubber containing carboxyl group and diethylenetriamine containing amine groups through reversible ionic bonds and hydrogen bonds via acid-base reaction.

关 键 词：羧基丁腈橡胶 自修复 形状记忆 超分子网络 

分 类 号：TQ333.7[化学工程—橡胶工业]