基于离子超分子网络实现自修复天然橡胶的制备  

Preparation of self-healing natural rubber based on ionic supramolecular networks

作　　者：王琳 孙文硕 王晨露 杜爱华[1] WANG Lin;SUN Wen-shuo;WANG Chen-lu;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4期279-284,共6页China Synthetic Rubber Industry

摘　　要：将甲基丙烯酸锌(ZDMA)或聚(甲基丙烯酸锌)低聚物(PM)引入到天然橡胶中,同时并用炭黑/白炭黑与天然橡胶共混,制备一种具有自修复性能的耐屈挠疲劳橡胶。研究结果表明,与PM相比,ZDMA可形成以离子交联为主的可逆超分子网络,赋予了硫化胶更好的自修复功能,当其用量为40份(质量)时硫化胶的自修复效率最高,接近100%。不饱和羧酸盐(ZDMA或PM)与传统填料(炭黑和白炭黑)并用时,PM仅在前期可有效抑制裂纹的扩展,ZDMA可明显提高材料的耐屈挠疲劳性能,当m(ZDMA)/m(炭黑)为20/40时硫化胶的耐屈挠疲劳性能最好。Zinc methacrylate(ZDMA)or poly(zinc methacrylate)oligomer(PM)were introduced into natural rubber or blended with carbon black/silica and natural rubber to prepare a flexible fatigue resistant rubber with self-healing property.The results showed that ZDMA had better self-hea-ling than PM because of the reversible supramolecular network.When the amount of ZDMA was 40 phr,the self-healing efficiency of vulcanizate was the highest,close to 100%.Unsaturated carboxylate(ZDMA/PM)was combined with traditional fillers(carbon black/silica),PM could effectively inhibit crack propagation only in the early stage,and ZDMA could significantly improve the flexure resistance of the material.The vulcanizate had the best flexural fatigue resistance when m(ZDMA)/m(carbon black)was 20/40.

关 键 词：天然橡胶 不饱和羧酸盐 离子超分子网络 自修复 耐屈挠疲劳性能 

分 类 号：TQ332.5[化学工程—橡胶工业]