Process to impregnate the carbon consisting objects

Details Process to impregnate the carbon consisting objects Process to impregnate the carbon consisting objects

1982-06-07

1984-06-12

Lusignan, Michael R.

Coating processes

Vacuum utilized prior to or during coating

118 50, 118 66, 118 69, 118429, 4273741, 4273981, 4274301, B05D 118, B05D 300, B05D 302, C23C 1308

Patent

active

044541775

ABSTRACT:
There is provided a method and apparatus for impregnating carbon articles with hot impregnating medium in a closed autoclave whereby the articles to be impregnated are introduced into the autoclave which is then closed and heated by means of a heat exchanger to the impregnating temperature at which point the impregnating medium is introduced to fill the autoclave and then pressurized to impregnate the articles. Subsequent to impregnation, the impregnating medium is removed from the autoclave and the closed or sealed autoclave and the impregnated articles are cooled to a temperature below a predetermined "lower limit temperature" and the articles are then removed from the autoclave. The "lower limit temperature" is chosen to eliminate the emission of harmful off-gases.

REFERENCES:
patent: 4114562 (1978-09-01), Ubaldi et al.
patent: 4129091 (1978-12-01), France et al.
patent: 4311735 (1982-01-01), Young

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