Process for gelling a sol in fiberformed ceramic insulation

Details Process for gelling a sol in fiberformed ceramic insulation Process for gelling a sol in fiberformed ceramic insulation

1988-08-01

1991-06-04

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501 12, 501127, 501153, C04B 300

Patent

active

050213695

ABSTRACT:
A felted mat of ceramic fibers is impregnated with a sol-gel glass binder and is exposed to a low voltage direct current to catalytically gel the binder at ambient temperature and ambient pressure without pH conversion catalysts. The gelled binder can be easily converted to a ceramic thereafter and stabilized by firing above about 525.degree. F.

REFERENCES:
patent: 4324576 (1982-04-01), Matsuyama et al.
patent: 4828774 (1989-05-01), Andersson et al.
Clark et al., "Thermophoretic and Electrophoretic Deposition of Sol-Gel Composite Coatings", Ceramic Engineering Science Proceedings, 7(7-8), 1014-26, 1986
Ulrich, "Sol-Gel Processing", Chemtech, pp. 242-249, Apr. 1988.

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