Accession Number : AD0274732

Title :   RESEARCH ON BINDER TECHNIQUES FOR HIGH TEMPERATURE RADOME STRUCTURES

Corporate Author : GENERAL ELECTRIC CO SCHENECTADY N Y

Personal Author(s) : PLANT,HENRY T. ; MARKS,W.H. ; JORDAN,T.J.

Report Date : 31 MAR 1962

Pagination or Media Count : 1

Abstract : Substitution of glass microspheres for particulate fibers in the silica fiber-reinforced AlPO4 laminates resulted in low viscosity binder. For the most part laminates were weak. Little or no improvement in electrical properties was observed. Two formulations appeared worthy of investigation. Based on the improved flexural strength obtained in previous experiments by substituting asbestos in formulations containing particulate fibers, asbestos was added to glass microsphere formulations. No marked increase in strength was noted. Substitution of silica microspheres for particulate fillers resulted in much lower viscosity, probably due to the fact that the silica does not react in the formulation. The laminates appeared tough, but since the molds were not filled with the lower viscosity binder, more silica must be used to fill molds to obtain valid data for future tests. Improved laminate modulus and strength using palygorskite or palygorskite paper as filler was indicated. Baymal colloidal alumina appeared to be the aluminum hydroxide material suitable for use with palygorskite. (Author)

Descriptors :   *BINDERS, *LAMINATES, *RADOMES, ALUMINUM COMPOUNDS, ASBESTOS, CERAMIC FIBERS, CERAMIC MATERIALS, DIELECTRIC PROPERTIES, FILAMENT WOUND CONSTRUCTION, GLASS, HIGH TEMPERATURE, MATERIALS, MECHANICAL PROPERTIES, MICA, PHOSPHATES, REINFORCING MATERIALS, SPHERES, VISCOSITY, SILICON DIOXIDE

Distribution Statement : APPROVED FOR PUBLIC RELEASE