Strong, heat stable, water repellent, expanded perlite/alkali me

Details Strong, heat stable, water repellent, expanded perlite/alkali me Strong, heat stable, water repellent, expanded perlite/alkali me

1982-10-01

1984-05-01

Kittle, John E.

Compositions

Electrolytes for electrical devices

106 81, 106 84, 106DIG2, C04B 4300, E04B 180

Patent

active

044460406

ABSTRACT:
A coherent, rigid, heat stable, low density, low thermal conductivity, strong, impact resistant, water repellant thermal insulation material, having an average maximum linear shrinkage of 2% or less at temperatures up to 1200.degree. F., made from expanded perlite, alkali metal silicate solution, kaolin clay, and organic fiber. Additions of methylcellulose and polydimethyl silicone liquid enhance the insulation material's strength and water repellency characteristics. The material may be cured and dried at a temperature of about 170.degree. or less for a period of about 24 hours or more without humidity control.

REFERENCES:
patent: 3203813 (1965-08-01), Gajardo et al.
patent: 3658564 (1972-04-01), Gerow et al.
patent: 4288253 (1981-09-01), Venable
patent: 4336068 (1982-06-01), Vogel et al.

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