Compression-molded parts having an embedded conductive layer and method for making same
A compression-molded part has a conductive layer embedded in the part during molding of the part. The conductive layer is generally adjacent an outer surface of the part and is preferably formed from a mesh, a foil, a pulled screen, or multiple layers of conductive elements. The part is preferably optimized for use on the exterior of an aircraft for lightning-strike or EMI protection or for use as an antenna. Methods for forming the panels of the invention include placing the conductive layer against a mold surface of a compression mold, then forming the compression-molded part with the conductive layer embedded in the part.
1. A surface panel for an aircraft, the panel comprising:
a compression-molded member composed of chopped fibers, having;
an inner surface;
an outer surface; and
a plurality of edges connecting the inner surface to the outer surface;
a conductive layer embedded within the entire member during molding of the member, the conductive layer having a conductivity for conducting a current caused by a lightning strike, the conductive layer located across the entire member and the conductive layer having ends protruding from all of the plurality of edges connecting the inner surface to the outer surface of the member, the conductive layer having a plurality of conductive elements selectively arranged in a mesh formation, wherein the mesh formation is adjacent with the outer surface of the member; and
an electrical ending conductively coupled directly to the ends of the conductive layer protruding from all of the plurality of edges connecting the inner surface to the outer surface of the member, the electrical ending having a conductivity for conducting the lightning strike current, and the electrical ending being adapted to channel the lightning strike current from the conductive layer to a metal structure of the aircraft;
wherein the conductive layer is co-extensive with the member.
2. The surface panel according to claim 1 , wherein the compression molded member is at least partially formed from a thermoset plastic.
3. The surface panel according to claim 1 , wherein the conductive layer is formed from a metallic material.
4. The surface panel according to claim 1 , wherein the conductive layer is at least partially formed from copper.
5. The surface panel according to claim 1 , wherein the conductive layer is at least partially formed from aluminum.
6. The surface panel according to claim 1 , wherein the conductive layer is formed from multiple layers of conductive elements.
7. The surface panel according to claim 1 , wherein the compression molded member is at least partially formed from a fiber-reinforced plastic.