Study of condensed polynuclear aromatic resins used as binders

Four different condensed polynuclear aromatic (COPNA) resins were obtained by reacting different heavy residue oils with 1,4-benzenedimethanol and p-toluenesulfonic acid. Their adhesive related properties including softening-point, carbon residue, β resin content, were tested. Four different composites using them as binders were made by molding different resins with carbon fibers and their mechanical properties were tested. Results showed that the mechanical properties of the composites from COPNA resins from Daqing slurry are better than those from conventional bakelite and epoxy resin. This is ascribed to their good adhesion to the carbon fibers.