Ag纳米线的制备及其在低辐射率VO_2智能窗的应用研究
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- 论文作者：窦维维 ; 罗琳琳 ; 陈长 ; 高彦峰
- 英文论文作者：Weiwei Dou ; Linlin Luo ; Zhang Chen ; Yanfeng Gao ; School of Materials Science and Engineering ; Shanghai University
- 年：2016
- 作者机构：上海大学材料科学与工程学院;
- 论文关键词：VO_2薄膜 ; AgNWs ; 热致变色 ; 发射率
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十一分会：胶体与界面化学
- 语种：中文
- 分类号：TU228;TB383
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十一分会 ; 胶体与界面化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：230k
- 原文格式：D
- 会议级别：全国
摘要
VO_2智能窗在相变温度附近能自动响应环境温度的变化而改变自身近红外透过率,实现对太阳热的动态冷热双向调节,从而达到降低建筑能耗的目的。针对VO_2薄膜在智能节能窗玻璃应用方面仍然存在辐射率高的问题,通过理论模拟对银纳米线(AgNWs)薄膜光学性能的预测,提出了一种低发射率的微网膜层体系。将该微网膜层与VO_2薄膜复合,制备了兼具热致变色性能和低发射性能的复合薄膜。研究了银纳米线的直径和微网网孔大小对银纳米线微网结构及其与VO_2的复合薄膜性能的影响,开发了液相涂覆及柔性镀膜工艺。结果表明:对同一直径的AgNWs来说,其组成的微网结构间隔越小,发射率越小。采用旋涂法制备了以石英玻璃为基底的不同AgNWs/VO_2复合薄膜。测试结果表明:上层的AgNWs层能有效地降低薄膜发射率而没有劣化下层VO_2薄膜的热致变色性能。
VO_((2))-based thermochromic smart window can regulate solar infrared transmittance automatically near the phase transition temperature by responding to the ambient temperature and dynamically realize the hot and cold dual-directional regulation of solar heat,thus lowering the energy consumption in bulidings.VO_((2)) smart window films for sunlight regulation still exist the problem of high emissivity.This study proposed a microgrid layer structure with low emissivity based on the optical simulation of Ag-nanowire(AgNWs) thin film.The proposed AgNWs/VO_2composite flim combines thermochromic properties and low emissivity.This work developed a liquid phase coating process and systematically investigated the effects of the Ag-nanowires' diameter and the size of microgrid on the properties of the AgNWs/VO_2 composite flims.Specifically,the results can be concluded as follows:For Ag-nanowires of a fixed diameter,the emissivity decreases with decreasing the interval of nanowire(grid width).Ag-nanowire flims with different thickness were prepared by spin coating method.AgNWs/VO_2 composite films on quartz glass were prepared by spin coating method.Ag-nanowire layer can reduce emissivity,having no effect on the thermochromic properties of VO_2 film.
VO_((2))-based thermochromic smart window can regulate solar infrared transmittance automatically near the phase transition temperature by responding to the ambient temperature and dynamically realize the hot and cold dual-directional regulation of solar heat,thus lowering the energy consumption in bulidings.VO_((2)) smart window films for sunlight regulation still exist the problem of high emissivity.This study proposed a microgrid layer structure with low emissivity based on the optical simulation of Ag-nanowire(AgNWs) thin film.The proposed AgNWs/VO_2composite flim combines thermochromic properties and low emissivity.This work developed a liquid phase coating process and systematically investigated the effects of the Ag-nanowires' diameter and the size of microgrid on the properties of the AgNWs/VO_2 composite flims.Specifically,the results can be concluded as follows:For Ag-nanowires of a fixed diameter,the emissivity decreases with decreasing the interval of nanowire(grid width).Ag-nanowire flims with different thickness were prepared by spin coating method.AgNWs/VO_2 composite films on quartz glass were prepared by spin coating method.Ag-nanowire layer can reduce emissivity,having no effect on the thermochromic properties of VO_2 film.
引文
[1]Z.T.Zhang,Y.F.Gao,Z.Chen,J.Du,C.X.Cao,L.T.Kang and H.J.Luo.Thermochromic VO2 Thin Films:Solution-Based Processing,Improved Optical Properties and Lowered Phase Transformation Temperature[J].Langmuir,2010(13):10738-10744.
[2]张宗涛罗宏杰,高彦峰.VO2热致变色材料:从纳米颗粒到柔性贴膜[J].科学通报2015,60(25):2425-2437.
[2]张宗涛罗宏杰,高彦峰.VO2热致变色材料:从纳米颗粒到柔性贴膜[J].科学通报2015,60(25):2425-2437.