Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
SYNTHESIS AND LIGHT MANAGEMENT APPLICATION OF THERMOCHROMIC HYDROGEL MICROPARTICLES
Intelligent control of solar transmission through windows promises to reduce energy consumption for thermal comfort in buildings. However, the ability of current smart windows to regulate solar gain based on tunable extinction of phase-change materials is not optimum. A thin-film thermochromic device based on tunable light scattering of hydrogel microparticles of prescribed diameters is reported. In the study, poly (N- isopropylacrylamide)-2-Aminoethylmethacrylate hydrochloride (pNIPAm-AEMA) microparticles are synthesized, with low phase transition temperature of about 32 DEG C. Notably, the average size of pNIPAm-AEMA particles can vary from 1388 nm at 25 DEG C to 546 nm at 35 DEG C, leading to unprecedented infrared transmittance modulation of 75.6%, in agreement with the numerical simulation based on Mie theory. A high luminous transmittance of 87.2% is accomplished. The pNIPAm-AEMA device demonstrates tunable scattering with excellent stability and scalability, which may find application in a broader field of light management beyond energy-saving smart windows.
通过窗户对太阳能传输进行智能控制，有望减少建筑物中用于热舒适的能源消耗。但是，当前的智能窗户基于相变材料可调谐的消光来调节日光增益的能力并不是最佳的。报道了一种基于规定直径水凝胶微粒的可调谐光散射的薄膜热致变色装置。在研究中，合成了聚(N‑异丙基丙烯酰胺)‑甲基丙烯酸2‑氨基乙基酯盐酸盐(pNIPAm–AEMA)微粒，其具有约32℃的低相变温度。值得注意的是，pNIPAm–AEMA粒子的平均尺寸可以从25℃下的1388nm变化至35℃下的546nm，导致空前的75.6％的红外透射率调制，这与基于米氏散射理论的数值模拟相一致。达到了87.2％的高的光透射率。pNIPAm–AEMA装置展示了具有出色的稳定性和可扩展性的可调谐的散射，其可以应用于节能智能窗户之外的更广泛的光管理领域。
SYNTHESIS AND LIGHT MANAGEMENT APPLICATION OF THERMOCHROMIC HYDROGEL MICROPARTICLES
Intelligent control of solar transmission through windows promises to reduce energy consumption for thermal comfort in buildings. However, the ability of current smart windows to regulate solar gain based on tunable extinction of phase-change materials is not optimum. A thin-film thermochromic device based on tunable light scattering of hydrogel microparticles of prescribed diameters is reported. In the study, poly (N- isopropylacrylamide)-2-Aminoethylmethacrylate hydrochloride (pNIPAm-AEMA) microparticles are synthesized, with low phase transition temperature of about 32 DEG C. Notably, the average size of pNIPAm-AEMA particles can vary from 1388 nm at 25 DEG C to 546 nm at 35 DEG C, leading to unprecedented infrared transmittance modulation of 75.6%, in agreement with the numerical simulation based on Mie theory. A high luminous transmittance of 87.2% is accomplished. The pNIPAm-AEMA device demonstrates tunable scattering with excellent stability and scalability, which may find application in a broader field of light management beyond energy-saving smart windows.
通过窗户对太阳能传输进行智能控制，有望减少建筑物中用于热舒适的能源消耗。但是，当前的智能窗户基于相变材料可调谐的消光来调节日光增益的能力并不是最佳的。报道了一种基于规定直径水凝胶微粒的可调谐光散射的薄膜热致变色装置。在研究中，合成了聚(N‑异丙基丙烯酰胺)‑甲基丙烯酸2‑氨基乙基酯盐酸盐(pNIPAm–AEMA)微粒，其具有约32℃的低相变温度。值得注意的是，pNIPAm–AEMA粒子的平均尺寸可以从25℃下的1388nm变化至35℃下的546nm，导致空前的75.6％的红外透射率调制，这与基于米氏散射理论的数值模拟相一致。达到了87.2％的高的光透射率。pNIPAm–AEMA装置展示了具有出色的稳定性和可扩展性的可调谐的散射，其可以应用于节能智能窗户之外的更广泛的光管理领域。
SYNTHESIS AND LIGHT MANAGEMENT APPLICATION OF THERMOCHROMIC HYDROGEL MICROPARTICLES
热致变色水凝胶微粒的合成与光管理应用
FANG NICHOLAS (Autor:in) / LI XINHAO (Autor:in) / LIU CHANG (Autor:in) / FENG XIANPING (Autor:in)
06.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
G02F
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING,...
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Vorrichtungen oder Anordnungen, deren optische Arbeitsweise durch Änderung der optischen Eigenschaften des Mediums der Vorrichtungen oder Anordnungen geändert wird zum Steuern der Intensität, Farbe, Phase, Polarisation oder der Richtung von...
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B32B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse
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E06B
Feste oder bewegliche Abschlüsse für Öffnungen in Bauwerken, Fahrzeugen, Zäunen oder ähnlichen Einfriedungen allgemein, z.B. Türen, Fenster, Läden, Tore
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FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES, OR LIKE ENCLOSURES, IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
SYNTHESIS AND APPLICATION OF LIGHT MANAGEMENT WITH THERMOCHROMIC HYDROGEL MICROPARTICLES
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