Anaerobic composite matrix resins

A method for repairing a composite material having a damaged region, comprising:

• treating at least a portion of the damaged region of the composite material with a primer to produce a primer-treated damaged region;
• pre-treating a reinforcement matrix with an activator sizing agent by applying a solution of the activator sizing agent to the reinforcement matrix and allowing the reinforcement matrix to dry, whereby the reinforcement matrix is coated with a residual coating of organometallic compounds, to produce a pre-treated reinforcement matrix;
• sizing the pre-treated reinforcement matrix to an appropriate size for application to the primer-treated damaged region;
• placing the pre-treated reinforcement matrix on the primer-treated damaged region;
• impregnating the pre-treated reinforcement matrix with an anaerobically curing matrix resin, wherein the anaerobically curing matrix resin contacts the primer in the primer-treated damaged region, wherein the anaerobically curing matrix resin comprises acrylate based resin materials and curing agents, and wherein the curing agents comprise peroxide initiators, aromatic amine accelerators, and benzoic sulfimide, to form a pre-cured composite matrix resin at the primer-treated damaged region;
• and
• exposing the pre-cured composite matrix resin to anaerobic conditions, to form an anaerobically cured composite matrix resin to repair the damaged region of the composite material.