Data of carbon fiber reinforced plastics curing under complex temperature programs

It was found that the point of gel formation coincides with the minimum extremum on the graph of the derivative of the tangent of the dielectric loss angle versus time. In the graph of the tangent of the dielectric loss angle versus time A technique for modifying carbon fiber reinforced plastic is presented, which contributes to the achievement of uniform gelation throughout the entire thickness of the prepreg. The effect is achieved by introducing a curing catalyst in specified concentrations into various layers of the prepreg.

The ultimate strength in static bending of modified CFRP increases by 1.2 times.The anisotropy of the static bending strength in the modified sample is reduced by 11.9%.