航天医学与医学工程

目的 针对航天服月尘防护需求，探索研究织物纤维材料表面特性对材料表面月尘吸附的影响规律。方法 设计一种月尘吸附实验装置，利用该装置在真空和辐照条件下开展纤维材料模拟月尘吸附特性的研究实验，根据显微镜下观察结果分析纤维材料导电特性、表面能特性对材料表面月尘吸附的影响。结果 紫外辐照能够使模拟月尘充电活化，纤维表面月尘吸附量增加；降低纤维材料表面能或提高纤维材料导电特性均有利于减少纤维材料表面月尘吸附。结论 真空辐照环境下，月尘与纤维材料之间的吸附力以库仑力为主，通过提高纤维材料表面的导电特性，更有利于减少纤维表面月尘吸附。

Objective The effect of lunar dust adhesion performance by fiber surface characteristics were investigated for the lunar dust adhesion mitigation of spacesuits. Methods In this research, an adhesion test method under ultraviolet ray radiation in vacuum was developed to measure the adhesion quantity of simulated lunar dust on fiber materials. Based on the microscopic image of the fiber sample after test, the influence of conductive and surface energy characteristics of the fiber materials on the lunar dust adhesion performance was studied. Results The simulated lunar dust were activated under ultraviolet ray radiation, which induced an increase of the adhesion quantity of simulated lunar dust on fiber materials;Lower surface energy or higher conductive characteristics of the fiber was both beneficial to reduce the adhesion quantity of simulated lunar dust. Conclusion The static electric forces were likely to be the major forces between the fiber and the lunar dust under ultraviolet ray radiation in vacuum. In addition to reducing surface energy, improving conductive characteristics of the fiber was more beneficial to reduce the adhesion quantity of simulated lunar dust.