| 摘要 |
1,086,813. Laminates. NATIONAL AERONAUTICS & SPACE ADMINISTRATION. July 26, 1965 [July 31, 1964], No. 31799/65. Heading B5N. A method of bonding a thermally protective plastics lamination to a metallic surface comprises heating a metallic surface and a layer of polytetrafluoroethylene under controlled conditions, fixedly positioning the polytetrafluoroethylene layer and the metallic surface relative to each other so as to provide a controlled gap distance therebetween, forcing a low viscosity thermosetting resin between the two layers to completely fill the gap distance therebetween, subjecting the resultant structure to controlled ambient pressure within a pressure chamber while maintaining the chamber temperature for a period of time sufficient to cure the resin and thereby bond the two surfaces and cooling the bonded structure to room temperature whilst maintaining it under pressure. The exemplified metal surface is a truncated metal alloy sleeve, the alloy being composed of thorium and magnesium, said sleeve serving as the metal antennµ structure for a re-entry vehicle, and having a plurality of circumferentially disposed radial projections on its exterior surface. |
