Abstract
The polydimethylisioxane elastomer based on Diels-Alder (DA) chemistry is successfully prepared by directly crosslinking bis(3-aminopropyl)-terminated polydimethylsiloxane with the bisepoxide containing two DA bonds in one molecule via epoxy-amine reaction. The elastomer prepared based on DA chemistry exhibits good mechanical property, high self-healing, and remolded efficiencies. The as-prepared elastomer can be stretched to over 400% and its tensile strength can reach 0.80 MPa. The self-healing efficiency and remolded efficiency are up to 93% and 95%, respectively. This work provides a simple and efficient way to fabricate the self-healing and remolded polydimethylsiloxane elastomer with good mechanical properties. The as-prepared elastomer has a promising potential in artificial muscles, protective coatings, and intelligent flexible electronics.