Orlando G. Rivera González, Abdulrahman K. Aljwirah, Andrea L. Felicelli, Xiulin Ruan, Justin A. Weibel
{"title":"新兴超白辐射冷却涂料的动态润湿性","authors":"Orlando G. Rivera González, Abdulrahman K. Aljwirah, Andrea L. Felicelli, Xiulin Ruan, Justin A. Weibel","doi":"10.1002/admi.202500288","DOIUrl":null,"url":null,"abstract":"<p>Outdoor radiative cooling surfaces passively lose heat by reflecting solar irradiation and emitting infrared radiation to cold deep space through the atmospheric sky window (8–13 µm), thereby achieving sub-ambient temperature. Ultrawhite radiative cooling paints are an emerging technology offering scalable solutions for cooling and passive water harvesting wherein surface wettability plays a key role. This work, examines how radiative cooling paint pigment and binder formulations affect surface morphology, roughness, and dynamic wettability. Samples are prepared with three different nanoparticulate pigments, calcium carbonate (CaCO<sub>3</sub>), barium sulfate (BaSO<sub>4</sub>), and hexagonal boron nitride (hBN); two binders, including an acrylic and a waterborne silicone-modified polyurethane dispersion (SILIKOPUR 8081); and pigment solid volume concentrations from 0% to 80% v/v. The CaCO<sub>3</sub> and BaSO<sub>4</sub> pigments produced paints with rougher textures and higher contact angles due to their pigment particle morphology. While high solar reflectance was achieved across various pigment and binder combinations, wettability exhibited a complex trend with pigment concentration, indicating that maximizing reflectance does not necessarily optimize wetting behavior. This expanded understanding on how pigment type, binder and concentration influence wettability, offering pathways to design coatings with tailored spectral and wetting properties for both self-cleaning paints and passive water harvesting applications</p>","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":"12 16","pages":""},"PeriodicalIF":4.4000,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/admi.202500288","citationCount":"0","resultStr":"{\"title\":\"Dynamic Wettability Behavior of Emerging Ultrawhite Radiative Cooling Paints\",\"authors\":\"Orlando G. Rivera González, Abdulrahman K. Aljwirah, Andrea L. Felicelli, Xiulin Ruan, Justin A. Weibel\",\"doi\":\"10.1002/admi.202500288\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Outdoor radiative cooling surfaces passively lose heat by reflecting solar irradiation and emitting infrared radiation to cold deep space through the atmospheric sky window (8–13 µm), thereby achieving sub-ambient temperature. Ultrawhite radiative cooling paints are an emerging technology offering scalable solutions for cooling and passive water harvesting wherein surface wettability plays a key role. This work, examines how radiative cooling paint pigment and binder formulations affect surface morphology, roughness, and dynamic wettability. Samples are prepared with three different nanoparticulate pigments, calcium carbonate (CaCO<sub>3</sub>), barium sulfate (BaSO<sub>4</sub>), and hexagonal boron nitride (hBN); two binders, including an acrylic and a waterborne silicone-modified polyurethane dispersion (SILIKOPUR 8081); and pigment solid volume concentrations from 0% to 80% v/v. The CaCO<sub>3</sub> and BaSO<sub>4</sub> pigments produced paints with rougher textures and higher contact angles due to their pigment particle morphology. While high solar reflectance was achieved across various pigment and binder combinations, wettability exhibited a complex trend with pigment concentration, indicating that maximizing reflectance does not necessarily optimize wetting behavior. This expanded understanding on how pigment type, binder and concentration influence wettability, offering pathways to design coatings with tailored spectral and wetting properties for both self-cleaning paints and passive water harvesting applications</p>\",\"PeriodicalId\":115,\"journal\":{\"name\":\"Advanced Materials Interfaces\",\"volume\":\"12 16\",\"pages\":\"\"},\"PeriodicalIF\":4.4000,\"publicationDate\":\"2025-07-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/admi.202500288\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Materials Interfaces\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://advanced.onlinelibrary.wiley.com/doi/10.1002/admi.202500288\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Materials Interfaces","FirstCategoryId":"88","ListUrlMain":"https://advanced.onlinelibrary.wiley.com/doi/10.1002/admi.202500288","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Dynamic Wettability Behavior of Emerging Ultrawhite Radiative Cooling Paints
Outdoor radiative cooling surfaces passively lose heat by reflecting solar irradiation and emitting infrared radiation to cold deep space through the atmospheric sky window (8–13 µm), thereby achieving sub-ambient temperature. Ultrawhite radiative cooling paints are an emerging technology offering scalable solutions for cooling and passive water harvesting wherein surface wettability plays a key role. This work, examines how radiative cooling paint pigment and binder formulations affect surface morphology, roughness, and dynamic wettability. Samples are prepared with three different nanoparticulate pigments, calcium carbonate (CaCO3), barium sulfate (BaSO4), and hexagonal boron nitride (hBN); two binders, including an acrylic and a waterborne silicone-modified polyurethane dispersion (SILIKOPUR 8081); and pigment solid volume concentrations from 0% to 80% v/v. The CaCO3 and BaSO4 pigments produced paints with rougher textures and higher contact angles due to their pigment particle morphology. While high solar reflectance was achieved across various pigment and binder combinations, wettability exhibited a complex trend with pigment concentration, indicating that maximizing reflectance does not necessarily optimize wetting behavior. This expanded understanding on how pigment type, binder and concentration influence wettability, offering pathways to design coatings with tailored spectral and wetting properties for both self-cleaning paints and passive water harvesting applications
期刊介绍:
Advanced Materials Interfaces publishes top-level research on interface technologies and effects. Considering any interface formed between solids, liquids, and gases, the journal ensures an interdisciplinary blend of physics, chemistry, materials science, and life sciences. Advanced Materials Interfaces was launched in 2014 and received an Impact Factor of 4.834 in 2018.
The scope of Advanced Materials Interfaces is dedicated to interfaces and surfaces that play an essential role in virtually all materials and devices. Physics, chemistry, materials science and life sciences blend to encourage new, cross-pollinating ideas, which will drive forward our understanding of the processes at the interface.
Advanced Materials Interfaces covers all topics in interface-related research:
Oil / water separation,
Applications of nanostructured materials,
2D materials and heterostructures,
Surfaces and interfaces in organic electronic devices,
Catalysis and membranes,
Self-assembly and nanopatterned surfaces,
Composite and coating materials,
Biointerfaces for technical and medical applications.
Advanced Materials Interfaces provides a forum for topics on surface and interface science with a wide choice of formats: Reviews, Full Papers, and Communications, as well as Progress Reports and Research News.