Improved process for resin transfer molding

摘要

An improved process to make composites comprises the steps of: (1) contacting a substrate with a thermoplastic partially-cured curable tackifier resin at above the glass-transition temperature to form a preform; (2) adding a matrix resin that can dissolve the tackifier or that is essentially identical to the tackifier and co-curing the tackifier and matrix resin to form a composite. The resulting composites are useful in structural applications.