材料科学
石墨烯
光热治疗
涂层
纳米技术
阻燃剂
纳米复合材料
纳米结构
复合材料
光电子学
作者
Tianyang Cui,Yapeng Zheng,Min Hu,Bin Lin,Jingwen Wang,Wenfang Cai,Bin Fei,Jixin Zhu,Yuan Hu
出处
期刊:Small
[Wiley]
日期:2024-04-22
标识
DOI:10.1002/smll.202312083
摘要
Abstract Due to the ubiquitous and inexhaustible solar source, photothermal materials have gained considerable attention for their potential in heating and de‐icing. Nevertheless, traditional photothermal materials, exemplified by graphene, frequently encounter challenges emanating from their elevated reflectance. Inspired by ocular structures, this study uses the Fresnel equation to enhance the photo‐thermal conversion efficiency of graphene by introducing a polydimethylsiloxane (PDMS)/silicon dioxide (SiO 2 ) coating, which reduces the light reflectance (≈20%) through destructive interference. The designed coating achieves an equilibrium temperature of ≈77 °C at one sun and a quick de‐icing in ≈65 s, all with a thickness of 5 µm. Simulations demonstrate that applying this coating to high‐rise buildings results in energy savings of ≈31% in winter heating. Furthermore, the combination of PDMS/SiO 2 and graphene confers a notable enhancement in thermal stability through a synergistic flame‐retardant mechanism, effectively safeguarding polyurethane against high temperatures and conflagrations, leading to marked reduction of 58% and 28% in heat release rate and total heat release. This innovative design enhances the photo‐thermal conversion, de‐icing function, and flame retardancy of graphene, thereby advancing its applications in outdoor equipment, high‐rise buildings, and aerospace vessels.
科研通智能强力驱动
Strongly Powered by AbleSci AI