聚四氟乙烯是航天器上常用的一种聚合物材料。在空间环境效应地面模拟试验设备中 ,对这种材料开展了真空紫外辐射、真空紫外辐射与原子氧复合效应的试验研究 ,总结和分析了试验前后试样外观、质量、光学参数和表面成分等方面的变化规律 ,并对真空紫外辐射及其与原子氧复合作用的过程和反应机理做了初步的分析。得出结论 :真空紫外辐射作用下试样表面积累了碳而发生暗化 ,原子氧又将其漂白 ,这两种因素的复合作用 ,可能会使Teflon材料产生更为严重的剥蚀。 Teflon is a commonly used polymer material on spacecraft. In space environment effect ground simulation test equipment, this material has been carried out vacuum ultraviolet radiation, vacuum ultraviolet radiation and atomic oxygen composite effects of experimental study, summarizes and analyzes the test sample appearance, quality, optical parameters and surface composition And the preliminary analysis of the process and reaction mechanism of vacuum ultraviolet radiation and its complexation with atomic oxygen. The conclusion is drawn that under the action of vacuum ultraviolet radiation, the surface of the sample accumulates carbon and darkening, and the atomic oxygen bleaches it again. The combined effect of these two factors may cause more severe denudation of the Teflon material.