SYNTHESIS OF NONALKALI GLASS FOR FIBER-GLASS-REINFORCED PLASTIC REINFORCEMENT,
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 14, 1969
- Accession Number
- AD0694848
Entities
People
- N. N. Ermolenko
- Yu. V. Kondrateva
Organizations
- National Air and Space Intelligence Center