Loading patent…
AssigneeLockheed Martin Corporation
InventorsStephanie D. McNay, Dustin B. Martin, Thomas L. Marino, Douglas C. Neckers
Estimating the term…
The present invention relates to a hybrid cure mechanism developed to polymerize highly filled/loaded, optically opaque, acrylate polymeric material compositions by radiant energy. The hybrid cure mechanism, when incorporated into a resinous composition, can be utilized to repair surface coatings on high performance aircraft where an extended composition pot life or application life and rapid cure capability combined with an acceptable shelf life stability are required. More specifically, the present invention relates to an electrically conductive resinous paint or gap filler for a suitably prepared composite or metallic surface. The composition also has applications on a production line of high performance aircraft.
A method for curing a highly filled resin composition for use in military and commercial aircraft applications, satellite applications and weapon systems, to impart low observable performance characteristics, which comprises the steps of 1) incorporating a photo initiator composition comprised of a fluorone dye primary photo initiator and at least one co-initiator into a given resin system, wherein said fluorone dye is 5,7-diiodo-3-butoxy-6-fluorone and said co-initiator is selected from the group consisting of a borate salt and an onium salt, resulting in the formation of a photo initiator-resin mixture, 2) adding a filler to said mixture so that the filler is at least 50 wt. % of a resulting photoinitiator-resin-filler composition and 3) exposing the photo initiator-resin-filler composition to a light source for from 2 to 8 minutes to effectuate cure of said photo initiator-resin-filler composition, wherein upon the irradiation of said photo initiator-resin-filler composition a unique electron donor/electron acceptor mechanism is activated within said photo initiator-resin-filler composition resulting in the initiation of polymerization of the resin system.
A method for making a highly filled optically opaque coating composition for use in military and commercial aircraft applications, satellite applications and weapon systems, including use in low observable aircraft applications to impart low observable performance characteristics, comprising the steps of:
Dependencies are inferred from the claim text.