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Excellent Temperature-Control Based on Reversible Thermochromic Materials for Light-Driven Phase Change Materials System

机译:光可逆相变材料系统基于可逆热致变色材料的出色温度控制

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摘要

Light-driven phase change materials (PCMs) have received significant attention due to their capacity to convert visible light into thermal energy, storing it as latent heat. However, continuous photo-thermal conversion can cause the PCMs to reach high thermal equilibrium temperatures after phase transition. In our study, a novel light-driven phase change material system with temperature-control properties was constructed using a thermochromic compound. Thermochromic phase change materials (TC-PCMs) were prepared by introducing 2-anilino-6-dibutylamino-3-methylfluoran (ODB-2) and bisphenol A (BPA) into 1-hexadecanol (1-HD) in various proportions. Photo-thermal conversion performance was investigated with solar radiation (low power of 0.09 W/cm2) and a xenon lamp (at a high power of 0.14 W/cm2). The TC-PCMs showed a low equilibrium temperature due to variations in absorbance. Specifically, the temperature of TC-PCM180 (ODB-2, bisphenol A and 1-HD ratio 1:2:180) could stabilize at 54 °C approximately. TC-PCMs exhibited reversibility and repeatability after 20 irradiation and cooling cycles.
机译:光驱动相变材料(PCM)由于具有将可见光转换为热能并将其存储为潜热的能力而备受关注。但是,连续的光热转换会导致相变后PCM达到较高的热平衡温度。在我们的研究中,使用热致变色化合物构建了具有温度控制特性的新型光驱动相变材料系统。通过将2-苯胺基-6-二丁基氨基-3-甲基荧烷(ODB-2)和双酚A(BPA)以各种比例引入1-十六烷醇(1-HD)中来制备热致变色相变材料(TC-PCM)。使用太阳辐射(低功率0.09 W / cm 2 )和氙气灯(高功率0.14 W / cm 2 )研究光热转换性能。由于吸光度的变化,TC-PCM显示出较低的平衡温度。具体而言,TC-PCM180(ODB-2,双酚A和1-HD的比例为1:2:180)的温度大约可以稳定在54°C。 TC-PCM在20个辐照和冷却循环后表现出可逆性和可重复性。

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