Integrating AgNPs-decorated phase change microcapsules into UV-cured PUA with enhanced thermal conductivity for solar thermal energy conversion and storage

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells Pub Date : 2024-10-30 DOI:10.1016/j.solmat.2024.113253

Fan Zhou , Yanqi Ma , Wentong Zhao , Li Zhang , Ying Chen , Xinxin Sheng

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引用次数: 0

Abstract

Developing smart flexible film based on high thermal conductivity phase change microcapsules (MPCM) is essential for personal thermal management, which could provide sufficient warmth for individuals outdoor through the phase change behavior. Herein, we report the synthesis of n-octadecane MPCM with a composite shell of silver nanoparticles (AgNPs) and melamine-formaldehyde (MF) resin, followed by surface modification to create Ag@MPCM with enhanced thermal conductivity. These were combined with PUA resin to fabricate composite films exhibiting phase change properties. The 1Ag@MPCM (the ratio of AgNO₃ to MPCM is 1:1 during modification) demonstrated an ideal thermal storage capacity (up to 108.20 J/g). The thermal conductivity of it exhibited 0.643 W m⁻¹ K⁻¹, representing a 242 % improvement compared MPCM. AgNPs, serving as thermal conductive fillers, exhibited localized surface plasmon resonance (LSPR). It enhances the radiative absorption capability and thermal conductivity of MPCM, thereby accelerating the phase change process. Compared to pure PUA, the thermal conductivity of 30Ag@MPCM-PUA (0.186 W m⁻¹ K⁻¹) was increased by 29 %. After 300 s of simulated solar irradiation, the temperature of 30Ag@MPCM-PUA is 48.1 °C higher than that of PUA. Furthermore, the 30Ag@MPCM-PUA exhibited good thermal conductivity and excellent photothermal conversion properties. Overall, 30Ag@MPCM-PUA holds significant potential for personal thermal management field.

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将 AgNPs 装饰的相变微胶囊集成到紫外固化聚氨酯中，增强导热性，用于太阳能热能转换和储存

开发基于高导热相变微胶囊（MPCM）的智能柔性薄膜对于个人热管理至关重要，它可以通过相变行为为户外的个人提供足够的温暖。在本文中，我们报告了正十八烷相变微胶囊与银纳米粒子（AgNPs）和三聚氰胺-甲醛（MF）树脂的复合外壳的合成过程，随后通过表面改性制备出具有增强导热性的 Ag@MPCM。这些材料与 PUA 树脂相结合，制成了具有相变特性的复合薄膜。1Ag@MPCM （在改性过程中，AgNO3 与 MPCM 的比例为 1:1）具有理想的热储存能力（高达 108.20 J/g）。其热导率为 0.643 W m-1 K-1，与 MPCM 相比提高了 242%。作为导热填料的 AgNPs 表现出局部表面等离子体共振（LSPR）。它增强了 MPCM 的辐射吸收能力和热导率，从而加速了相变过程。与纯 PUA 相比，30Ag@MPCM-PUA 的热导率（0.186 W m-1 K-1）提高了 29%。模拟太阳照射 300 秒后，30Ag@MPCM-PUA 的温度比 PUA 高 48.1 °C。此外，30Ag@MPCM-PUA 还具有良好的导热性和优异的光热转换性能。总之，30Ag@MPCM-PUA 在个人热管理领域具有巨大潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Solar Energy Materials and Solar Cells 工程技术-材料科学：综合

CiteScore

12.60

自引率

11.60%

发文量

513

审稿时长

47 days

期刊介绍： Solar Energy Materials & Solar Cells is intended as a vehicle for the dissemination of research results on materials science and technology related to photovoltaic, photothermal and photoelectrochemical solar energy conversion. Materials science is taken in the broadest possible sense and encompasses physics, chemistry, optics, materials fabrication and analysis for all types of materials.