Sulfur-linked hybrid gel compositions and aerogels thereof
AssigneeAspen Aerogels, Inc.
InventorsOwen R Evans, Wenting Dong, Kiranmayi Deshpande
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Abstract
Methods and materials are described for preparing organic-inorganic hybrid gel compositions where a sulfur-containing cross-linking agent covalently links the organic and inorganic components. The gel compositions are further dried to provide porous gel compositions and aerogels. The mechanical and thermal properties of the dried gel compositions are also disclosed.
Claims10
A gel composition comprising an organic polymer, a silica network, and a cross-link comprising sulfur, wherein the gel composition is characterized by a thermal conductivity of from 11.6 milliWatts/meter-K (mW/m-K) to 18.2 mW/m-K measured according to ASTM C177 at 38° C. at atmospheric pressure and under an applied compressive load of 0.4 psi and wherein residual strain in the gel composition after release to 0 psi of a 14.7 psi compressive force applied using a cross-head speed of 0.05 inches/minute is from 1% to 3%.
Dependencies are inferred from the claim text.