Research development on the toughness and performance of epoxy resin-based composites in low-temperature environments

Abstract

Epoxy resin-based composites play an important role in daily life due to their various excellent properties, and their scale application is greatly limited due to their embrittlement phenomenon in low-temperature environment. This paper reviews the progress of domestic and international research on the performance of epoxy resin in a low-temperature environment and its toughening mechanism, involving toughening materials including rubber elastomers, thermoplastics, nanomaterials, flexible chain segments and hyperbranched polymers. This study mainly summarizes several methods for toughening epoxy resins in a low-temperature environment, so as to provide theoretical guidance for future researches. Toughening modification of epoxy resin broadens its industrial application scope. In the future, researchers can promote the research of epoxy resin toughening design on the basis of modification methods, filling methods, toughening mechanisms, and operational implementability.