WO2025008770 - ATMOSPHERIC-MOISTURE-INDUCED POLYACRYLATE HYDROGEL SYSTEM AND METHOD FOR PASSIVE COOLING
National phase entry:
Publication Number
WO/2025/008770
Publication Date
09.01.2025
International Application No.
PCT/IB2024/056516
International Filing Date
03.07.2024
Title **
[English]
ATMOSPHERIC-MOISTURE-INDUCED POLYACRYLATE HYDROGEL SYSTEM AND METHOD FOR PASSIVE COOLING
[French]
SYSTÈME D'HYDROGEL DE POLYACRYLATE INDUIT PAR L'HUMIDITÉ ATMOSPHÉRIQUE ET PROCÉDÉ DE REFROIDISSEMENT PASSIF
Applicants **
KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
4700 King Abdullah University of Science and Technology
Thuwal, 23955-6900, SA
Inventors
GAN, Qiaoqiang
4700 King Abdullah University of Science and Technology
Thuwal, 23955-6900, SA
Priority Data
63/524,948
05.07.2023
US
Application details
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International Searching Authority |
MOIP
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| Entry into National Phase under |
Chapter I
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing | 1462 | |
| EPO | Filing, Examination | 8512 | |
| Japan | Filing | 588 | |
| South Korea | Filing | 574 | |
| USA | Filing, Examination | 2710 |
Total: 13846 USD
The term for entry into the National Phase has expired. This quotation is for informational purposes only
Abstract[English]
A photonic hydrogel film (300) includes a substrate (602) and a hybrid cooling layer (304) attached to the substrate (602) and including a sodium polyacrylate (PAAS) material (308) forming a continuous film structure. The PAAS material (308) is hydrated by atmospheric water molecules so that chains of the PAAS material (308) are uncoiled for maintaining the continuous film structure. The PAAS material simultaneously reflects sunlight due to a porous structure and emits infrared radiation due to molecular vibrations of the chains of the PAAS material.[French]
Un film d'hydrogel photonique (300) comprend un substrat (602) et une couche de refroidissement hybride (304) fixée au substrat (602) et comprenant un matériau de polyacrylate de sodium (PAAS) (308) formant une structure de film continue. Le matériau PAAS (308) est hydraté par des molécules d'eau atmosphérique de sorte que des chaînes du matériau PAAS (308) sont déroulées pour maintenir la structure de film continue. Le matériau PAAS réfléchit simultanément la lumière du soleil en raison d'une structure poreuse et émet un rayonnement infrarouge dû aux vibrations moléculaires des chaînes du matériau PAAS.