A novel core-shell epoxy high performance composite: Self-lubricating, heat-resistant and self-repairing

摘要

In order to obtain a comprehensive high-performance polymer material that satisfies the application requirements under complex working conditions such as thermal field, friction or even damage, in this work, the core shell structure of Silica sol modified Diphenylmethane diisocyanate (MDI) @Epoxy resin (EP) / F atoms-contained-amine (F-A) hybrid was successfully synthesized. After the obtained microsphere material was added as reinforcing filler to the EP substrate, we performed mechanical, tribological, self-repairing and thermal properties characterization. In particular, the resulting composite has a coefficient of friction of only about 0.13 and a thermal conductivity better than 0.2 W / (m K). Here, we provide a new mechanism for efficient self-healing of materials damaged under friction conditions, and impart lubricity and unprecedented heat resistance to the material.