Insulation formed of precipitated silica and fly ash

Details Insulation formed of precipitated silica and fly ash Insulation formed of precipitated silica and fly ash

1986-07-31

1987-07-21

Van Balen, William J.

Stock material or miscellaneous articles

Sheet including cover or casing

53434, 252 62, 1563031, 428 69, 428 76, 4283159, 428446, 428448, B32B 100, B32B 110, B65B 3100, E04B 174

Patent

active

046817883

ABSTRACT:
Precipitated silica is mixed with a fly ash material and is employed as an insulating material having a low thermal conductivity. The mixture of precipitated silica and fly ash material is dried, compressed, placed in an evacuable pouch, and evacuated. The resulting board-like insulation configuration is used directly as insulation. The board-like material which is produced may be used as insulation in household refrigerators and freezers by placing it in an insulation space between the inner liner and the outer case and encapsulating the board-like material with a foamed insulating material.

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"The Condensed Chemical Dictionary", p. 783, Revised by G. G. Hawley, 1976 Eighth Edition, Van Nostrand Reinhold Company.
"Proceedings-The Royal Society", pp. 459-477.

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