Accession Number : AD0631383

Title :   STUDIES ON REFRACTORY FIBER RESEARCH.

Descriptive Note : Summary rept. no. 1, 14 Jul 59-30 Sep 60,

Corporate Author : HUGHES AIRCRAFT CO CULVER CITY CALIF

Personal Author(s) : Gates,L. E. ; Lent,W. E.

Report Date : 30 OCT 1960

Pagination or Media Count : 49

Abstract : The greatest portion of the work in the program was devoted to the development of a carbon-arc fiberizing apparatus and glass fiberizing techniques. The carbon -arc provided a high temperature source capable of melting all the refractory materials investigated. The characteristics found to be most significant in fiberizing refractory glasses were the temperature, viscosity, and surface tension of the melted glass. Refractory glasses were screened by evaluating the fiberizing characteristics of their compositions, formulated according to the hypotheses of glass formation. Four oxide compositions which produced high fiber yields were selected for comparison with E-glass fibers produced by the same method. Tensile strength measurements of the fibers revealed no significant statistical difference in the strengths of the four compositions and E-glass. One refractory fiber composition was not visually affected when subjected to a temperature of 1250 C for one-half hour. Sufficient quantities of fibers were produced from the four selected refractory compositions for the fabrication of phenolic resin composite test specimens. Measurements of flexural strength, flexural modulus of elasticity, block compressive strength, and punch shear strength indicated that the refractory fiber-resin composites were slightly better than the E-glass-resin composites and compare favorably with chopped roving glass-phenolic resin composites. (Author)

Descriptors :   (*REFRACTORY MATERIALS, FIBERS), (*FIBERS, HEAT RESISTANT MATERIALS), (*GLASS, PREPARATION), (*COMPOSITE MATERIALS, HEAT RESISTANT MATERIALS), ELECTRIC ARCS, DRAWING(FORMING), SELECTION, OXIDES, NITRIDES, CARBIDES, MELTING POINT, TENSILE PROPERTIES, PHENOLIC PLASTICS, MECHANICAL PROPERTIES

Subject Categories : Laminates and Composite Materials
      Textiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE