电致变红外热辐射调控器件研究进展

Recent progress on an electro-induced infrared thermal radiation control device

航天器在轨运行时,面对复杂多变的外部热流环境以及内部热耗的显著差异,确保航天器各个功能部件满足预定温控要求,对其热控系统提出了更高的挑战。然而,传统的温度调控技术存在能耗大以及器件机械结构复杂的缺点,不适用于目前热辐射调控领域轻质化和低能耗的需求,因此,发射率的动态调控成为红外热辐射调控技术研究的热点。为了探讨基于电致变发射率材料构建的热辐射调控器件在航天器智能热控等领域的实际应用价值,本文介绍基于二维材料、金属氧化物、导电聚合物以及金属等材料的电致变红外热辐射器件的工作原理以及研究进展。预测未来器件将进一步向大面积、多波段兼容方向发展,从而保证对未来复杂环境的适应性以及可靠性。

When the spacecraft is in orbit,in the face of complex and changeable external heat flow environment and significant differences in internal heat consumption,it is a higher challenge for its thermal control system to ensure that each functional component of the spacecraft meets the predetermined temperature control requirements.However,the traditional temperature control technology has the disadvantages of high energy consumption and complex mechanical structure of the device,which is not suitable for the current demand of lightweight and low energy consumption in the field of thermal radiation regulation.Therefore,the dynamic regulation of emissivity has become a hot spot in the research of infrared thermal radiation regulation technology.To explore the practical application value of the thermal radiation control devices based on electro-induced emissivity materials in the intelligent thermal control of spacecraft field,this paper summarizes the working principles and research progress of electro-induced infrared thermal radiation control devices based on two-dimensional materials,metal oxides,conductive polymers,and metals,and then predicts that devices will further be developed toward large-area and multi-band compatibility to ensure adaptability and reliability in complex environments.