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Kaowool Rigidizer (2300ºF Colloidal Silica Hardener and Rigidizer)



Kaowool Rigidizer is a colloidal silica compound for treating surfaces of Kaowool ceramic fiber products to provide a degree of surface hardness and resistance to erosion. Kaowool Rigidizer is stabilized against freezing during exposure to cold; however, freezing should be avoided.




Specifications  · Features  · Applications  · Installation Information

Specifications

Color

Clear

Solid Content

Approx. Silica 28 to 29%

Approx. Weight per Gallon

10 lb
4.5
kg

Approx. Nominal Density, (Wet)

75 lb/ft³
1202
kg/m³

Maximum Temperature Rating

2300 ºF
1260
ºC

Freezing Temperature

28 ºF
-2
ºC

Viscosity, Centipoises at 25ºC

4

Specific Gravity at 25ºC

1.203

pH

9.7

Standard Sizes

Can - 1 gallon
Drum - 55 gallon

Pail - 5 gallon


Features
  • Increases surface hardness and resistance lo erosion
  • Easily applied by brushing or spraying
  • Freeze resistant




Applications
  • Surface coating for Kaowool ceramic fiber blanket exposed to high velocity gases
  • Adhesive for use in making composites and laminates
  • Surface treatment for Kaowool vacuum formed shapes to increase surface hardness




Installation Information
Kaowool Rigidizer is applied by brushing, dipping, rolling, and spraying. Suitable respiratory protection and ventilation are required when applied by spraying.

Materials to be rigidized should be free of all grease and oil. Kaowool Rigidizer receives its bonding action from the removal of physical water. Bonding may be accelerated by heating or over drying. Curing is a function of the size of the shape and its geometry.

An application rate of one gallon per 25 square feet (7.6 m²) of ceramic fiber surface will render a hard surface without completely rigidizing the interior of the ceramic fiber body.



 DOWNLOADS 

Data Sheet for Kaowool Rigidizer (2300°F Colloidal Silica Hardener and Rigidizer)
(PDF, 152KB)


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