Accession Number : AD0430323


Title :   FUSELAGE - B-58 WINDSHIELD POLYMER B AS EXTENDED EDGE MATERIAL - EVALUATION OF -,


Corporate Author : GENERAL DYNAMICS/FORT WORTH TEX


Personal Author(s) : Hoffmann,H C


Report Date : 15 Jan 1964


Pagination or Media Count : 11


Abstract : Tests wereinitiated as a result of preliminary work on simulated B-58 windshields which had shown (1) that Polymer B retarded the degrada tion of silicon Type K interlayer when exposed to moisture - SO2 - sunlight; and (2) that an extended postcure at elevated temperature also slowed degradation of the interlayer. Results of the Polymer B windshields showed that attempts to make a satisfactory windshield by this method were generally unsuccessful. LibbeyOwens-Ford did periphery disclosed that the Polymer B had not cured properly. Upon exposure of the windshield for 35.5 hours to moistureSO2 - sunlight in a solarium, cracks appeared in the Type K interlayer near the edges of the panel. An attempt was made to determine burst pressure of the windshield at 260F. However, the glass separated almost intact from the edge attachment at a pressure of one to two psig. No further testing was conducted on this or the other Polymer B windshield. (Author)


Descriptors :   *JET BOMBERS , *MANUFACTURING , WINDSHIELDS , DEGRADATION , ENVIRONMENTAL TESTS , HUMIDITY , ACIDS , SULFUR COMPOUNDS , OXIDES , LAMINATED GLASS , FRACTURE(MECHANICS) , WEAR RESISTANCE , BONDING , SILICONE PLASTICS , AGING(MATERIALS) , SEALING COMPOUNDS


Distribution Statement : APPROVED FOR PUBLIC RELEASE