Cailiao gongcheng (Nov 2020)
Research progress in resin based on dynamic covalent chemistry and its composites
Abstract
Resin matrix composites have been widely used in aviation, aerospace and other important frontiers. The application proportion of composites has become an important criterion to measure equipment advancement. Thermoset composite materials are well known difficult to be repeatedly processed and recycled, while thermoplastic composite materials show poor processing performance due to the high melting temperature. Nowadays, the growth of dynamic covalent chemistry has obscured the line between thermosets and thermoplastics, which makes it possible to realize the innovative development of resin matrix composites. In this paper, the fundamental theory of dynamic covalent chemistry and covalent adaptable networks were outlined. The research process of resin matrix composites based on dynamic covalent chemistry was introduced in detail. The resin matrix composites exhibit promising prospect owing to the remoldable, ease to recycle, self-healing and smart actuator applications. Finally, some suggestions were put forward for the development of the composites, such as improving bond exchange reaction mechanism and stress relaxation model, developing high-performance and commercial resin systems, also developing technologies for composites forming, connecting, repairing and recycling based on the characteristics of material.
Keywords