Temperature-responsive hydrogel with ultra-large solar modulation and high luminous transmission for "smart window" applications
Temperature-responsive hydrogel with ultra-large solar modulation and high luminous transmission for "smart window" applications
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DOI：
10.1039/c4ta02287d
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发表时间：
2014-09-07
影响因子：
11.9
通讯作者：
Long, Yi
中科院分区：
文献类型：
--
作者：
Zhou, Yang;Cai, Yufeng;Long, Yi
研究了聚（N-异丙基丙烯酰胺）水凝胶薄膜在热致变色智能窗中的应用。随着水凝胶的厚度从26 μ m增加到200 μ m，测试温度从20 ℃增加到60 ℃，太阳光调制能力（Δ T-sol）增加，透光率（T-lum）降低。与大多数研究的无机VO 2热致变色涂层的最佳报告结果相比，具有优化厚度的水凝胶可以实现近两倍的平均T-lum（70.7%对42.8%），更高的Δ T-sol（25.5%对22.3%）和更低的转变温度（类似于32摄氏度对类似于68摄氏度）的前所未有的良好组合。良好的耐久性和可逆性与夹层结构的正确密封建立。
The application of a thin film of poly(N-isopropylacrylmide) hydrogel to thermochromic smart windows has been investigated. As the thickness of the hydrogel increased from 26 to 200 mu m and the testing temperature increased from 20 to 60 degrees C, the solar modulating ability (Delta T-sol) increased and the luminous transmittance (T-lum) decreased. Compared with the best reported results for the most studied inorganic VO2 thermochromic coatings, an unprecedented good combination of near-doubled average T-lum (70.7% vs. 42.8%), higher Delta T-sol (25.5% vs. 22.3%) and lower transition temperature (similar to 32 degrees C vs. similar to 68 degrees C) could be achieved by hydrogels with an optimized thickness. Good durability and reversibility were established with the correct sealing of the sandwich structure.