| abstract |
A composite bonding process is disclosed. At least one of two curable, resin-based composite substrates is partially cured to a degree of cure of at least 10% but less than 75% of full cure. The composite substrates are then joined to each other with a curable adhesive there between. Co-curing of the joined substrates is carried out to form a bonded composite structure, whereby the adhesive is chemically bonded to and mechanically diffused with the resin matrix of the composite substrates, resulting in a chemically bonded interface between the adhesive and each composite substrate. Furthermore, bonding can occur with the presence of contaminants on the joined surfaces. |