弹性体
聚氨酯
延伸率
材料科学
自愈
复合材料
高分子化学
极限抗拉强度
医学
病理
替代医学
作者
Xiaofei Wang,Yanyan Wei,Chen Dong,Yapeng Bai
标识
DOI:10.1080/10601325.2017.1387483
摘要
Two kinds of polyurethane elastomers were synthesized. One containing acylhydrazone bonds was named TPIA. The other containing both acylhydrazone and disulfide bonds was named TPID. Self-repairable ability and reprocessability of these two elastomers were studied. The results show that: The polyurethane elastomer TPIA can automatically repair damage to it under acidic conditions. After self-healing for 24 h, the strength and the elongation value at break recovered to 32% and 55% of the originality, respectively. The polyurethane elastomer TPID can automatically repair damage to it under visible light at room temperature. After 24 h of self-healing time, 75% of the original strength and 100% of the original elongation values at break were obtained. These two polyurethane elastomers can be reprocessed in their cured state by just applying temperature and pressure.
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