自修复材料（self-healing materials），智能材料的一种，近年受到材料研究人员的追捧。可以这样简单地这样理解这种材料：外力将材料分成两段，当将分开的两部分在相互接触时又重新恢复到完整的状态。如下图
（图片来源下面的第一篇文献）关于自修复材料的原理请阅读以下两篇文章：
1、
标题：Catalyst-free room-temperature self-healing elastomers based on aromatic disulfide metathesis
作者：Alaitz Rekondo,Roberto Martin,Alaitz Ruiz de Luzuriaga,Germán Cabañero,Hans J. Grandea and Ibon Odriozola
摘要：
Aromatic disulfide metathesis has been reported as one of the very few dynamic covalent chemistries undergone at room-temperature. Here, bis(4-aminophenyl) disulfide is effectively used as a dynamic crosslinker for the design of self-healing poly(urea–urethane) elastomers, which show quantitative healing efficiency at room-temperature, without the need for any catalyst or external intervention.
文献链接：DOI: 10.1039/C3MH00061C
2、《先进材料》上的一篇文章
（图片来源下面的文献）
标题：Adaptable Hetero Diels–Alder Networks for Fast Self-Healing under Mild Conditions
作者：Kim K. Oehlenschlaeger等等
摘要：
A novel adaptable network based on the reversible hetero Diels–Alder reaction of a cyanodithioester and cyclopentadiene is presented. Reversible between 50–120 °C, the adjustable and self-healing features of the network are evidenced via temperature dependent rheology experiments and repetitive tensile tests whereas the network’s chemical structure is explored by temperature dependent 1H MAS-NMR spectroscopy.
文献链接：DOI: 10.1002/adma.201306258