Accession Number : AD0694848

Title :   SYNTHESIS OF NONALKALI GLASS FOR FIBER-GLASS-REINFORCED PLASTIC REINFORCEMENT,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Ermolenko,N. N. ; Kondrateva,Yu. V.

Report Date : 14 FEB 1969

Pagination or Media Count : 7

Abstract : Studies on producing nonalkali fiber glass of sand, kaolin, dolomite, and chalk were performed in an effort to find a substitute for scarce aluminoboron silicate glass. The work was based on a study of glass-formation diagram for the system; silica- alumina - magnesia - lime. Composition designated as 7/10, 10/10, and 7T were found to be most resistant to crystallization and to chemical decomposition. It was determined that type 7T could be readily produced by existing facilities at one eighth the cost of aluminoboron silicate glass and that all three types had satisfactory physical and chemical characteristics. Glass-reinforced plastic made of 7T with bakelite and worked into 3-mm strands had an ultimate tensile strength of 9000-12,000 kg/sq cm2 and modulus of elasticity of 400,000--500,000 kg/sq cm2. Tests on corrosion resistance of fiber glass of 7T proved it equal to that of aluminoboron silicate fiber glass.

Descriptors :   (*GLASS TEXTILES, MANUFACTURING), (*REINFORCED PLASTICS, GLASS TEXTILES), GLASS, SILICATES, ALUMINUM COMPOUNDS, PHOSPHATES, PRODUCTION, PHYSICAL PROPERTIES, USSR

Subject Categories : Ceramics, Refractories and Glass
      Refractory Fibers
      Laminates and Composite Materials
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE