Interface conjugation enhances the interface adhesion performance of carbon fiber-reinforced phthalonitrile composites by π-π stacking.

There has been little research focus on the interface problems of phthalonitrile (PN) resin and carbon fiber. However, interface performance is related to the overall mechanical properties of composites and is very important. This study focused on the interfacial performance and adhesion mechanism of a carbon fiber C/PN composite.