Rigidized fibrous ceramic insulation

Details Rigidized fibrous ceramic insulation Rigidized fibrous ceramic insulation

1995-06-05

1999-01-26

Weisberger, Richard

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Coated or impregnated woven, knit, or nonwoven fabric which...

Coating or impregnation provides heat or fire protection

442 18, 442 72, 442 68, 442149, 442172, 442178, 428367, 427 62, 427123, 427124, 4271262, 4271263, 427404, 427427, B32B 312, G32G 306

Patent

active

058638466

ABSTRACT:
A slurry is molded from ceramic fibers and/or microparticles to form a soft felt mat which is impregnated with a sol prior to drying the mat. A catalyst for the sol is caused to diffuse into the mat by exposing the mat to the catalyst and subjecting the mat to a soak time during which the catalyst diffuses into the mat and causes the sol to gel. The sol-gel binder forms bonds so that the mat is dimensionally stabilized. The mat is dried to produce ceramic insulation.
Ceramic insulation having a consistent microstructure and a fully gelled sol-gel binder through its entire thickness is also provided.

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