中国空间科学技术（中英文）2025，Vol.45Issue(2)：61-69,9.DOI:10.16708/j.cnki.1000-758X.2025.0023
金属多孔阵列结构的毛细性能实验
Experiment on capillary performance of metal porous array structure
摘要
Abstract
The capillary performance of porous structure is one of the main factors that determine whether the liquid propellant can be obtained stably in the storage tank under microgravity.The multilayer stainless porous array structure whose microcolumn distance ranges from 50 μm to 110 μm was prepared through 3D printing.The internal structure and surface morphology of the porous array structure are observed with the X-ray microscope and scanning electron microscope.The capillary rising process in the porous array structure is investigated with the infrared camera by using HFE7500,ethanol,and ethylene glycol as the working fluids.The capillary performance parameters are obtained through the capillary rising curves.The results show that the porosity of the porous array structure increases as the microcolumn distance increases.Besides,a larger microcolumn distance leads to a faster rising velocity and a larger rising height.The maximum rising height of a porous array structure with a microcolumn distance of 110 μm is 2.34 times that of a porous array structure with a microcolumn distance of 50 μm.For the same porous array structure,the rising velocity with the ethanol is the highest,followed by HFE7500 and ethylene glycol,respectively.Moreover,the capillary performance factor increases as the microcolumn distance increases,indicating that the porous array structure with a microcolumn distance of 110 μm has the best comprehensive capillary performance.The results provide a reference for the design of porous structure liquid acquisition device.关键词
液体管理/多孔阵列结构/孔隙率/微柱间距/毛细爬升Key words
liquid management/porous array structure/porosity/microcolumn distance/capillary rise引用本文复制引用
易天浩,加欢,林奕霖,汪彬,姜梦怡,吴静怡,杨光..金属多孔阵列结构的毛细性能实验[J].中国空间科学技术（中英文）,2025,45(2):61-69,9.基金项目
国家自然科学基金(52276013,51936006) （52276013,51936006）
