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AssigneeWestlake Royal Building Products (USA) Inc.
InventorsEdward F. Cassidy, Ying Zhang, Xi Zhang, Matthew Yatco Meneses, Hamed Lakrout
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Foam composites and methods of preparation thereof are discussed. For example, the foam composite may include a polymeric material and a particulate filler, wherein the compressive strength of the foam composite is equal to or greater than 20 psi, the density is 4 pcf to 40 pcf, and wherein the thermal conductivity is equal to or less than 0.050 W/n K, the particulate filler may include fly ash. e.g., in an amount of about of 45% to about 75% by weight with respect to the total weight of the foam composite. The foam composite may be prepared from a mixture of a polyol, an isocyanate, the particulate filler, and a liquid blowing agent having a boiling point equal to or greater than 25° C. or 30° C.
A method of preparing a foam composite, the method comprising:
A method of preparing a foam composite, the method comprising:
A foam composite comprising polyurethane and a particulate filler, wherein the foam composite is prepared by free rise foaming with a liquid blowing agent comprising water and an organic liquid having a boiling point equal to or greater than 30° C., wherein the foam composite has a density of 2 pcf to 40 pcf and a flexural strength of 20 psi to 100 psi, and wherein the foam composite has a closed cell content equal to or greater than 50%.
Dependencies are inferred from the claim text.