Waterproof silicone coatings of thermal insulation and vaporizat

Details Waterproof silicone coatings of thermal insulation and vaporizat Waterproof silicone coatings of thermal insulation and vaporizat

1997-08-11

1999-08-17

Cameron, Erma

Coating processes

Coating by vapor, gas, or smoke

Base includes an inorganic compound containing silicon or...

42725514, 42725515, 42725518, 42725524, 42725526, 42725527, 42725528, 4272554, 4272556, 4272557, 428447, 428448, B05D 100, C23C 1600

Patent

active

059391413

ABSTRACT:
Thermal insulation composed of porous ceramic material can be waterproofed by producing a thin silicone film on the surface of the insulation by exposing it to volatile silicone precursors at ambient conditions. When the silicone precursor reactants are multi-functional siloxanes or silanes containing alkenes or alkynes carbon groups higher molecular weight films can be produced. Catalyst are usually required for the silicone precursors to react at room temperature to form the films. The catalyst are particularly useful in the single component system e.g. dimethylethoxysilane (DMES) to accelerate the reaction and decrease the time to waterproof and protect the insulation. In comparison to other methods, the chemical vapor technique assures better control over the quantity and location of the film being deposited on the ceramic insulation to improve the waterproof coating.

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Takai, Zairyo Gijutsu (1996), 14(9), pp 259-264.
Ransone, Ceram.Eng.Sci.Proc. (1983), 4(7-8), pp 564-77.
Mui et al, Ceram.Eng. Sci. Proc. (1985), 6(7-8), pp 793-805.

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