High-Temperature Carbon Fiber Reinforced Plastics Based on a Thermoreactive Polyimide Binder

The results of the study of experimental carbon fiber reinforced plastics based on a thermoreactive PMR polyimide binder are presented. The studies of the thermal stability of the carbon fiber reinforced plastics are carried out and their elastic strength characteristics at temperatures up to 320°C are determined. The possibility in principle of production of carbon fiber reinforced plastics from prepregs based on a PMR polyimide binder obtained by both melt and solution technologies is shown. Carbon fiber reinforced plastics (CFRPs) prepared from two types of prepregs possess a high glass transition point of 364°C (melt) and 367°C (solution) with the retention of this parameter at a level of 97% after exposure in boiling water and also approximately the same (86–97%) level of retention of the elastic strength properties at 300°C.