Radiative cooling material and method of making the same

By using an alternating composite structure of polymethyl methacrylate and polycarbonate ultraviolet reflective layer and polymer resin layer doped with refractive particles, the stability problem of polymer-based radiative cooling materials in strong ultraviolet environments is solved, achieving high efficiency radiative cooling performance and long lifespan, making it suitable for industrial production.

CN118636549BActive Publication Date: 2026-07-24UNIV OF SCI & TECH OF CHINA
1 Cites 0 Cited by

Patent Information

Application Number
CN202410671506.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-05-28
Publication Date
2026-07-24
Estimated Expiration
2044-05-28

AI Technical Summary

Technical Problem

Existing polymer-based radiative cooling materials lack stability in strong ultraviolet environments, leading to shortened lifespan and deteriorated radiative cooling performance. Traditional solutions also suffer from the problem of energy conversion into heat or environmental pollution.

Method used

A structure consisting of an alternating ultraviolet reflective layer of polymethyl methacrylate and polycarbonate and a polymer resin layer doped with refractive particles is prepared by a micro-nano layered co-extrusion process. This achieves a synergistic effect of ultraviolet reflection and infrared emission, thereby enhancing the resistance to ultraviolet aging.

Benefits of technology

It improves the ultraviolet reflectivity and infrared emissivity of materials, extends service life, avoids energy loss, is low in cost and environmentally friendly, and is suitable for mass production.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The application discloses a radiation refrigeration material and a preparation method thereof. The radiation refrigeration material comprises a top layer and a bottom layer. The top layer is an ultraviolet light reflecting layer, and the ultraviolet light reflecting layer is a polymer multilayer film which is regularly alternately compounded by polymethyl methacrylate and polycarbonate. The bottom layer is a polymer resin layer doped with refractive particles. The application also provides a preparation method of the radiation refrigeration material. The radiation refrigeration material can strongly reflect ultraviolet light, and the ultraviolet light aging resistance is greatly improved. The radiation refrigeration material overcomes the refrigeration power loss problem caused by the absorption of ultraviolet light by a traditional ultraviolet light absorber, and has the advantages of strong ultraviolet light aging resistance and excellent radiation refrigeration performance.
Need to check novelty before this filing date? Find Prior Art