Thermal insulating superhydrophobic composite coating for building thermal management

IF 2.3 4区材料科学 Q2 CHEMISTRY, APPLIED

Journal of Coatings Technology and Research Pub Date : 2024-04-29 DOI:10.1007/s11998-024-00925-4

Meihui Tang, Lin Su, Zhimeng Zhao, Siyu Wu, Pengfei Li, Xiaofeng Zhao, Fei Zhou, Yuxiang Li, Shanlin Wang

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Abstract

Thermal insulating coatings have important potential for energy saving in the field of building thermal management, but they are difficult to apply on a large scale due to the problem of being waterproof and moistureproof. Herein, we design a two-step spray process to fabricate a thermal insulating superhydrophobic composite coating using epoxy resin mixed with hollow glass microsphere as primer coating and fluorine-modified SiO₂ nanocoating as a waterproof layer. The composite coating shows durable superhydrophobicity and low thermal conductivity [0.051 W/(m·k)], which is endowed with excellent thermal insulating properties under light and heat, contact heat conduction (− 20 to 70 °C), and boiling water scouring environment. These multiple key properties that have been integrated into our composite film are expected to provide unique advantages for applications in building thermal management.

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用于建筑热管理的隔热超疏水复合涂层

隔热涂料在建筑热管理领域具有重要的节能潜力，但由于防水防潮问题，很难大规模应用。在此，我们设计了一种两步喷涂工艺，以环氧树脂混合中空玻璃微球作为底涂层，以氟改性二氧化硅纳米涂层作为防水层，制成隔热超疏水复合涂层。该复合涂层具有持久的超疏水性和较低的导热系数[0.051 W/（m-k）]，在光和热、接触热传导（- 20 至 70 °C）和沸水冲刷环境下具有优异的隔热性能。我们的复合薄膜集成了这些多重关键性能，有望为建筑热管理应用提供独特优势。

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来源期刊

Journal of Coatings Technology and Research 工程技术-材料科学：膜

CiteScore

4.30

自引率

8.70%

发文量

130

审稿时长

2.5 months

期刊介绍： Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.