Vacuum infusion adhesive and methods related thereto

摘要

An epoxy adhesive that is adapted to enable spray delivery and seamless polymerization during epoxy resin vacuum infusion techniques is disclosed. The epoxy adhesive can include one or more epoxy resins and one or more solvents that are used to dissolve the one or more epoxy resins. An adduct, a tackifier, and fumed silica can also be added to the adhesive.

主权项

1. A spray adhesive composition for epoxy resin vacuum infusion techniques comprising a mixture of epoxy resins dissolved in (4) one or more solvents; wherein the mixture of epoxy resins comprises:
(1) an epoxy resin with a weight per epoxide value of 1500 to 4000 grams per equivalent, (2) an epoxy polyacrylate resin with a weight per epoxide value of 200 to 350 grams per equivalent and a viscosity of 200 to 1500 cP at 25° C., and (3) a carboxyl terminated butadiene nitrile (CTNB) modified epoxy resin with a weight per epoxide value of 180 to 1000 grams per equivalent; wherein the spray adhesive composition is capable of cross-linking and structurally integrating with a catalyzed epoxy infusion resin to form a single integrated cured structure.