Abstract
There is a growing demand of self-healing materials to overcome the costs derived from repairing and substituting pieces and components due continuous damages. Among the pursued strategies, the development of self-healing systems capable of operate at real low temperatures remains unsolved. In this study, we report the development of an extrinsic self-healing system for composite materials that has demonstrated an efficiency above 100% at low/ultra-low temperatures. This mechanism is based on the Ring-Opening Metathesis Polymerization (ROMP) of a blend of 5-ethylidenenorbornene/dicyclopentadiene (ENB/DCPD) monomers in the presence of ruthenium-based 3rd generation Grubbs’ catalyst (G3). The blend was microencapsulated in formaldehyde-free polyurea vessels and dispersed into three different commercial epoxy resins. Tapered Double Cantilever Beam (TDCB) specimens of the modified resins were manufactured, tested and healed at low/ultra-low temperature conditions completely autonomously. All samples showed high self-healing efficiency, demonstrating the potential incorporation in real composite materials for high performance fields.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Composites Part A: Applied Science and Manufacturing
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
