Accession Number : AD0288855

Title :   MATERIAL-WINDSHIELD-INTERLAYER-SILICONE RUBBER-EVALUATION OF VACUUM POST CURE TO IMPROVE WEATHERING RESISTANCE

Corporate Author : GENERAL DYNAMICS/FORT WORTH TEX

Personal Author(s) : CARROLL,M.T.

Report Date : 22 AUG 1962

Pagination or Media Count : 1

Abstract : Pigmenting the Type K silicone interlayer with CaCO3 around the edges of B-58 windshields has not produced the extended service life which laboratory tests indicated. Tests were made to determine if extended service life could be expected from production B-58 windshields which had been post cured under vacuum and to analyze the volatiles released during this post cure. Three 4B1132 pilot enclosure windshields were tested. Two of these were vacuum post cured and all three exposed to sunlight, SO2 and moisture. The time-to-first-crac on exposure for the windshields which received a vacu p st cure was approximately 7-1/ hours more than that for the windshield which did not receive a vacuum cure. Based on the data obtained, vacuum post curing of B-58 windshields will improve their weathering resistance. (Author)

Descriptors :   *WINDSHIELDS, AIRPLANES, GLASS, LAMINATES, SILICONES, SYNTHETIC RUBBER

Distribution Statement : APPROVED FOR PUBLIC RELEASE