Coating surface of hydrophobic microporous thermal insulation material
AssigneeZortech International Limited
InventorsDerek E. Morgan, James D. J. Jackson, Tony M. Matthews
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Abstract
A surface of a hydrophobic microporous thermal insulation material is coated by first heating the surface of the microporous thermal insulation material so as to provide a hydrophilic surface layer on the hydrophobic material. Subsequently, a water-based coating, such as a water-based silicate adhesive, is applied to the hydrophilic surface layer of the hydrophobic material. An abrasive-and/or impact-resistant cover, such as a glass fibre cloth, may be applied to the coating.
Claims10
A method of coating a surface of hydrophobic microporous thermal insulation material comprising the steps of:
- providing an inorganic microporous thermal insulation material having a surface, the thermal insulation material incorporating a hydrophobing agent distributed substantially there throughout so as to render the insulation material hydrophobic, said hydrophobing agent being subject to being dispelled by heating of said insulation material;
- heating said surface of said hydrophobic microporous thermal insulation material to a temperature sufficient to dispel said hydrophobing agent therefrom so as to produce a surface layer of hydrophilic microporous thermal insulation material on said hydrophobic material;
- and
- applying a protective water-based coating composition to said hydrophilic surface layer of said hydrophobic material.
Dependencies are inferred from the claim text.