Scalable method of fabricating structured polymers for passive daytime radiative cooling and other applications
US12210146B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2023 |
| Grant date | Jan 28, 2025 |
| Priority date | — |
| Expiry date | Aug 8, 2043 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/2417
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A structured material is provided that includes a substrate and a porous structured polymer layer disposed thereon. The porous structured polymer layer includes a plurality of voids, and has a high hemispherical reflectance a high a hemispherical thermal emittance. The structured material is thus particularly advantageous for cool-roof coatings, enabling surfaces coated by the material to stay cool, even under strong sunlight. The material can be produced via structuring of polymers in a mixture including a solvent and a non-solvent. Sequential evaporation of the solvent and the non-solvent provide a polymer layer with the plurality of voids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.