Thermally insulating aerogel based rendering materials
AssigneesEmpa EidgenöSsische MaterialprüFungs- Und Forschungsanstalt, Fixit AG
InventorsThomas Stahl, Samuel Brunner, Mark Zimmermann, Matthias Koebel
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Abstract
In order to produce a high performance thermally insulating rendering, a dry blend is provided that consists essentially of: —60 to 90 Vol.-% of a hydrophobized granular silica aerogel; —0.5 to 30 Vol.-% of a purely mineral binder; —0.2 to 20 Vol.-% of an open-porous water-insoluble or slowly water soluble additive having an accessible pore volume from 10 to 90 Vol.-%; —up to 5 Vol.-% reinforcing fibers; and—up to 5 Vol.-% of processing additives. After mixing the dry blend with water, the slurry thus formed can be applied to a surface or shaped to a self-supporting body using an overpressure without adversely affecting the thermal insulation properties.
Claims4
A dry blend for producing a thermally insulating rendering, consisting essentially of:
- 60 to 90 Vol.-% of a hydrophobized granular silica aerogel;
- 0.5 to 30 Vol.-% of a purely mineral binder;
- 0.2 to 20 Vol.-% of an open-porous water-insoluble or slowly water soluble additive having an accessible pore volume from 10 to 90 Vol.-%;
- up to 5 Vol.-% reinforcing fibers;
- up to 5 Vol.-% of processing additive;
- and,
- wherein said open-porous additive is pumice.
A dry blend for producing a thermally insulating rendering, consisting essentially of:
- 60 to 90 Vol.-% of a hydrophobized granular silica aerogel;
- 0.5 to 30 Vol.-% of a purely mineral binder;
- 0.2 to 20 Vol.-% of an open-porous water-insoluble or slowly water soluble additive having an accessible pore volume from 10 to 90 Vol.-%;
- up to 5 Vol.-% reinforcing fibers;
- up to 5 Vol.-% of processing additive;
- wherein said open-porous additive has a particle size from 0.04 to 4 mm;
- and,
- wherein said open-porous additive is pumice.
A dry blend for producing a thermally insulating rendering, consisting essentially of:
- 60 to 90 Vol.-% of a hydrophobized granular silica aerogel;
- 0.5 to 30 Vol.-% of a purely mineral binder;
- 0.2 to 20 Vol.-% of an open-porous water-insoluble or slowly water soluble additive having an accessible pore volume from 10 to 90 Vol.-%;
- up to 5 Vol.-% reinforcing fibers;
- up to 5 Vol.-% of processing additive;
- wherein said open-porous additive has an accessible pore volume from 45 to 55 Vol.-%;
- and,
- wherein said open-porous additive is pumice.
Dependencies are inferred from the claim text.