基于空心碳球的超黑涂层的制备与性能研究  

Preparation and Properties of Ultra-Black Coating Based on Hollow Carbon Sphere

作　　者：胡越凡 曹康丽 荣昊 刘刚 周博 潘阳阳 李瑜婧 李垚[3] 赵九蓬 潘磊 HU Yuefan;CAO Kangli;RONG Hao;LIU Gang;ZHOU Bo;PAN Yangyang;LI Yujing;LI Yao;ZHAO Jiupeng;PAN Lei(School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin 150001,Heilongjiang,China;Shanghai Institute of Spacecraft Equipment,Shanghai 200240,China;Center for Composite Materials and Structure,School of Astronautics,Harbin Institute of Technology,Harbin 150001,Heilongjiang,China)

机构地区：[1]哈尔滨工业大学化工与化学学院,黑龙江哈尔滨150001 [2]上海卫星装备研究所,上海200240 [3]哈尔滨工业大学航天学院复合结构与材料研究所,黑龙江哈尔滨150001

出　　处：《上海航天（中英文）》2020年第3期38-44,共7页Aerospace Shanghai（Chinese&English）

基　　金：国家自然科学基金资助项目(51603123);上海航天科技创新基金资助项目(SAST2017-065)。

摘　　要：针对空间光学系统中的杂散光抑制难题,设计并制备了基于空心碳球(HCS)的超黑涂层。对涂层的颜基比进行优化,发现在最佳颜基比1∶2的条件下,可获得高达0.983的太阳吸收比,结合力等级为2级,符合应用要求。研究表明:在涂层成膜过程中,黏合剂并未进入HCS中空部分,保留的亚波长小孔可有效降低涂层表观折射率,从而降低涂层在太阳波段上的反射率;HSC团聚形成的颗粒有助于涂层形成微米级陷光结构,进一步提高涂层的太阳吸收比。To deal with the stray light suppression in space optical system,an ultra-black coating based on hollow carbon sphere(HCS)is designed and prepared.The pigment-to-binder ratio(P/B)is optimized.It is found that under the optimal pigment-to-binder ratio of 2∶1,the solar adsorptance of up to 0.983 can be obtained,and the adhesion level is 2,which meet the application requirements.Studies have shown that during the coating film formation process,the adhesive does not enter the hollow part of the HCS,which means that the reserved sub-wavelength pores can reduce the apparent refractive index of the coating effectively and thus the reflectance of the coating on the solar band will decrease.Moreover,the particles formed by HSC aggregation contribute to the formation of a micro-scale light trapping structure in the coating,which further improves the solar absorptance.

关 键 词：杂散光 空心碳球 太阳吸收比 结合力 颜基比 亚波长小孔 陷光结构 

分 类 号：V45[一般工业技术—材料科学与工程]