CAJ | 학술논문

采用简单的旋涂、喷涂等方法,制备了一种由可溶性聚苯胺为主体电致变色智能热控器件.该器件的基底为聚酯,固体电解质为锂盐/聚丙烯腈.通过电切换调控,该器件发射率能够在0.46-0.75内调控,且红外光谱反射率变化大于38%.研究了厚度、预掺杂酸种类、浓度等对聚苯胺活性层发射特性的影响;考察了导电高分子聚苯胺层厚度、电切换电压等因素对涂层体系发射率调控的影响.结果表明发射率的调控范围与电化学还原的深度密切相关,通过调节材料厚度、掺杂酸种类等可有效提高发射率调控范围.该导电高分子电致变色智能热控涂层在航天器热控制方面展示了良好的应用前景.
채용간단적선도、분도등방법,제비료일충유가용성취분알위주체전치변색지능열공기건.해기건적기저위취지,고체전해질위리염/취병희정.통과전절환조공,해기건발사솔능구재0.46-0.75내조공,차홍외광보반사솔변화대우38%.연구료후도、예참잡산충류、농도등대취분알활성층발사특성적영향;고찰료도전고분자취분알층후도、전절환전압등인소대도층체계발사솔조공적영향.결과표명발사솔적조공범위여전화학환원적심도밀절상관,통과조절재료후도、참잡산충류등가유효제고발사솔조공범위.해도전고분자전치변색지능열공도층재항천기열공제방면전시료량호적응용전경.
In order to develop a smart variable emittance thermal control coating, we here report on a flexible solid-state electrochromic device(ECD) based on soluble polyaniline by simple fabrication process. Devices were as- sembled in sandwich configuration of electrochromic materials on flexible PET substrate and a Li~ doped polyacryloni- trile as a solid polymer electrolyte. The initial surface emissivity characteristics related to oxidation states, doping con- centration, doping agent and thickness were discussed. The smart thermal management of this ECD was characterized by its emittance in view of the thickness of active layer and the applied voltage. The emittance of our ECD can be tuned from 0.46 to 0.75 without any fine optimization, which is similar to that of other solid-state ECDs. The major advantage of this work is that the electrochromic variable emittance coating can be preparedby using simple process, such as spin coating and spray coatings. These methods do not require any special equipments and vacuum working conditions, and are easily applied for large area process as well. This study may open new avenues in the development of flexible electrochromic devices for spacecraft thermal control.