真空紫外对原子氧环境下S781白漆性能影响的研究

文章利用AOBISEE设备对S781白漆分别进行了单一原子氧环境试验、真空紫外与原子氧递次试验以及原子氧与真空紫外综合辐照试验研究。试验研究中原子氧的积分通量为3.5×1019 atom/cm2,真空紫外辐照剂量为200 ESH;试验前后用高精度微量电子天平和TEMP 2000A便携式热发射率测试仪分别对样品的质量和热发射率进行了测试。通过测试及分析,发现原子氧与真空紫外综合环境对S781白漆产生了协和效应。S781白漆在经原子氧与真空紫外综合环境作用之后质量损失显著增大,3种不同环境试验对S781白漆的热发射率影响不明显。在辐照剂量范围内,S781白漆的真空紫外与原子氧递次试验不能替代原子氧／真空紫外综合辐照试验。

Influences of vacuum ultraviolet on the property of S781 white paint in atomic oxygen environment

This paper studies the atomic oxygen (AO) erosion effects, VUV/AO ordinal effects and AO/VUV synergistic effects on the thermal control coating S781 by using AOBISEE facility. Samples were exposed to a fluence of 3.5×10¹⁹ atom/cm² AO and 200 ESH VUV. The mass of the samples was measured by high precision micro-electron balance after the test. Emissivity was measured by TEMP 2000A. For the thermal control paint S781, the synergistic effects can be shown by its mass loss, which is increased obviously after the synthetic experiment of AO/VUV. However, the emissivity is not affected significantly after the three different experiments. Results also indicate that VUV/AO ordinal experiment can not replace the AO/VUV synthetic experiment for thermal control paint S781 within the irradiation dose.