基于光子谐振效应的热控超材料设计与辐射特性研究  

Design and Radiation Characteristics of Thermal Control Metamaterials Based on Photonic Resonance Effect

作　　者：韩贺祥 王惠芬 徐骏 赵其斌 宋效坤 曹康丽 刘刚 HAN Hexaing;WANG Huifen;XU Jun;ZHAO Qibin;SONG Xiaokun;CAO Kangli;LIU Gang(Shanghai Institute of Satellite Equipment,Shanghai 200240,China;School of Materials Science and Engineering,Shanghai Jiao Tong university,Shanghai 200240,China)

机构地区：[1]上海卫星装备研究所,上海200240 [2]上海交通大学材料科学与工程学院,上海200240

出　　处：《上海航天(中英文)》2024年第6期63-69,共7页Aerospace Shanghai(Chinese&English)

基　　金：国家重点研发计划资助项目(2022YFB3903104)。

摘　　要：本文针对航天器表面高效散热需求,创新引入超材料概念,提出基于谐振效应的微纳结构高效光学散热材料思路,从材料组分选择与物性计算分析出发,研究建立了适用于空间高效散热的可见光高反射和红外高发射模型。结果表明:通过采用两种高低折射率材料组合成一维光子晶体,可以在较少的膜层内实现超高反射率。具体表现为:将金刚石/NaF与GaP/NaF膜层叠加,总层数为71层时获得250~2500 nm波段平均反射率为99.97%的结构;设计了宽粒径分布2~8μm SiO_(2)微球周期排列光子晶体,将红外发射率提升至93%。进一步将上述两种模型复合,实现250~2500 nm波段平均反射率>99%,3~15μm波段内发射率达92%,8~15μm波段内发射率达94%,散热性能相比传统热控涂层明显提高。The concept of metamaterials is innovated to meet the requirements of efficient heat dissipation on spacecraft surfaces,and a novel idea of efficient optical heat dissipation materials with micro-nano structure based on the resonance effect is proposed.Based on the analyses on material component selection and physical property calculation,visible light high-reflection and infrared high-emission models suitable for the efficient heat dissipation in space are investigated and established.The results show that by synthesizing one-dimensional photonic crystals with two kinds of materials,i.e.,high and low refractive index materials,ultra-high reflectance can be achieved in a few film layers.When the diamond/NaF and GaP/NaF layers are superimposed,the average reflectance in the 250~2500 nm band is 99.97%when the total number of layers is 71.A SiO_(2) microsphere with the width diameter of 2~8μm is designed to periodically align photonic crystals,the infrared emissivity of which is over 99%in the 250~2500 nm band.The above two models are combined further.The obtained emissivity in the 3~15μm band reaches 92%,and the obtained emissivity in the 8~15μm band reaches 94%.The heat dissipation performance is significantly improved compared with the traditional thermal control coating.

关 键 词：航天器 热控涂层 高反射高发射 谐振效应 光子晶体 

分 类 号：V45[一般工业技术—材料科学与工程]