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US 12,584,057 B2Granted
Geopolymer-based sub-ambient daytime radiative cooling coating
AssigneeThe Hong Kong Polytechnic University
InventorsJianguo Dai, Ning Yang
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Abstract
Sub-ambient daytime radiative cooling (SDRC) coating comprising: an alkali activated metakaolin, BaSO4, and silica nanospheres, wherein the alkali activated metakaolin is prepared by reaction of metakaolin with an alkali activator comprising waterglass and a strong base selected from the group consisting of LiOH, NaOH, KOH, Ca(OH)2, Li2O Na2O, K2O, CaO, and a mixture thereof, a coating formulation comprising the same, and a method of preparation and use thereof.
Claims17
A sub-ambient daytime radiative cooling (SDRC) coating composition comprising:
- an alkali activated metakaolin, BaSO4, and silica nanospheres, wherein the alkali activated metakaolin is prepared by reaction of metakaolin with an alkali activator, wherein the alkali activator comprises waterglass and a strong base selected from the group consisting of LiOH, NaOH, KOH, Ca(OH)2, Li2O Na2O, K2O, CaO, and a mixture thereof.
Dependencies are inferred from the claim text.