Silica wet gel and aerogel
AssigneeCardinal CG Company
InventorsReaz Ahmed Chowdhury, Mohammad Arifuzzaman, Kellen Kitzman, Kari B. Myli
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Abstract
The invention provides silica wet gel, silica aerogel, and methods that can be used to form an enhanced silica aerogel sheet having fewer optical defects along with other desirable properties.
Claims33
An article comprising a glass substrate and a silica aerogel sheet, the silica aerogel sheet being adhered to the glass substrate and being formed from a precursor material comprising methyl silicate 51 and having a thickness in a range of from 1.5 to 15 mm, a haze of less than 2.5%, a visible transmission of greater than 98%, a thermal conductivity of less than 20 mW/m*K, and a global structural similarity index measure of greater than 0.80, wherein the silica aerogel sheet is self-supporting such that the silica aerogel sheet retains sheet form without being adhered to a substrate.
An insulating glazing unit comprising two glass sheets and a between-pane space, the between-pane space being located between the two glass sheets, the insulating glazing unit further comprising a silica aerogel sheet received in the between-pane space, the silica aerogel sheet being formed from a precursor material comprising methyl silicate 51 and having a thickness in a range of from 1.5 to 15 mm, a haze of less than 2.5%, a visible transmission greater than 98%, a thermal conductivity of less than 20 mW/m*K, and a global structural similarity index measure of greater than 0.80, wherein the silica aerogel sheet is self-supporting such that the silica aerogel sheet retains sheet form without being adhered to a substrate.
A laminated glass assembly comprising two glass sheets and a silica aerogel sheet between the two glass sheets, the silica aerogel sheet being formed from a precursor material comprising methyl silicate 51 and having a thickness in a range of from 1.5 to 15 mm, a haze of less than 2.5%, a visible transmission of greater than 98%, a thermal conductivity of less than 20 mW/m*K, and a global structural similarity index measure of greater than 0.80, wherein the silica aerogel sheet is self-supporting such that the silica aerogel sheet retains sheet form without being adhered to a substrate.
Dependencies are inferred from the claim text.