Fiber reinforced polymer (FRP) has been widely used in marine engineering

aerospace engineering

civil engineering and other fields due to its lightweight

high strength and corrosion resistance. However

the inherent flammability of matrix resin makes FRP undergo complex physical and chemical changes in high temperature (fire) environment

resulting in a decrease in mechanical properties. The decrease in strength and stiffness may lead to structural deformation and collapse

resulting in property losses and even casualties. Therefore

it is very important to study the mechanical properties of composite at elevated temperatures to ensure the fire safety of composite structures. The experimental and theoretical research results of high-temperature mechanical properties of FRP at home and abroad were reviewed. Several models for predicting the loss in the mechanical properties are described. Firstly

The similarities and differences of the existing test methods were compared and analyzed. Secondly

the test results of high temperature mechanical properties of composite materials are briefly introduced. The effects of matrix resin type

composite interface

reinforced fiber type and coating method

and fireproof coating on high-temperature mechanical properties of composite were analyzed and summarized. Finally

the direction for further research in the future was prospected.