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以航天器镁合金防腐-热控一体化涂层为研究对象,分别通过盐雾试验、湿热试验和空间环境辐照试验(包括真空-紫外辐照、真空-质子辐照和真空-电子辐照)研究了涂层防腐性能和空间环境稳定性。结果表明以氟化羟基树脂和六亚甲基二异氰酸酯三聚体交联反应制得的脂肪族聚氨酯为粘结剂,制备的热控涂层具有耐湿热504h,耐盐雾腐蚀1008h的防腐性能,盐雾环境对α_S有一定影响,Δα_S为0.02;真空-紫外辐照、真空-质子辐照对α_S有一定影响,Δα_S分别为0.03和0.04;真空-紫外辐照、真空-质子辐照、真空-电子辐照均对热控涂层ε_H影响不明显,热控涂层高发射率热控特性在空间环境中稳定性好。
Aiming at the corrosion-thermal integrated coating of spacecraft magnesium alloy, the salt spray test, the wet heat test and the space environment radiation test (including vacuum-ultraviolet radiation, vacuum-proton irradiation and vacuum-electron irradiation ) Studied the anticorrosive properties of coatings and the stability of space environment. The results show that the aliphatic polyurethane prepared by cross-linking reaction of fluorinated hydroxyl resin and hexamethylene diisocyanate is a binder, and the prepared thermal control coating has the anti-corrosion properties of resistance to heat and humidity for 504 hours and resistance to salt fog corrosion for 1008 hours , The salt spray environment has some influence on α_S, Δα_S is 0.02; vacuum-ultraviolet irradiation and vacuum-proton irradiation have some influence on α_S, Δα_S are 0.03 and 0.04 respectively; vacuum-ultraviolet irradiation, vacuum- Vacuum-electron irradiation has no significant effect on the thermal control coating ε_H, thermal control coating high emissivity thermal control properties in space environment stability.