Self-healing elastomers that can repair physical damage and extend their service life in medium-and low-temperature environments have attracted considerable attention in the field of flexible materials. However, the self-healing polyurethane (PU) healing process reported in previous studies regularly needs to be supported by high heating temperature and long healing time. In this study, a simple method was developed to synthesize a self-healing PU film using isophorone diisocyanate (IPDI) and a transparent rubber solution. The high transmittance (89%) of the resulting polyurethane−isophorone-diisocyanate (PUI) film was confirmed by UV−vis spectroscopy. FT-IR spectroscopy revealed that the hydrogen bonds formed by the imino group and the C O bonds in IPDI and the transparent rubber facilitated the self-healing of the PUI composite film. The optical microscope observed that the self-healing PU can complete the self-healing of cracks in a short period. Moreover, a PUI film restored at 60 °C for 1 h withstood a load of 1 kg. Tensile tests showed that healing efficiencies of 82% and 99% were achieved by the PUI film healed at 60 °C for 1 and 2 h, respectively. A self-healing experiment conducted on a silver-nanowire/PUI-film system confirmed the synergistic recovery performance of PUI on a conductive coating. The self-healing PUI elastomers might have potential commercial prospects in transparent coatings, self-healing antibacterial films, robotic skins, and flexible electronics.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.