智能热控涂层性能研究

Properties of variable emissivity thermal control coatings

采用高温烧结固相反应法制备了钙钛矿结构锰化合物热控涂层。利用变温场稳态卡计法半球热辐射率测试设备研究了热控涂层的红外半球发射率和温度之间的关系。结果表明该化合物在低温条件下表现为低热辐射率特性,在高温表现为高热辐射率特性。此外,还对该热控涂层进行了真空-紫外、真空-质子、真空-电子辐照、热循环、真空-放气等空间环境模拟实验,实验表明这种智能涂层具有良好的空间稳定性。说明该热控涂层在未来的航天器上具有广阔的应用前景。

Perovskite structure manganese oxide thermal control coatings were synthesized by solid-state reac tion method. The relationship between the total hemispherical emittance （ell） and the temperature of the ther- mal control coatings was measured on a calorimetric emissometer which was based on the steady state calorime tric method. The compounds show thermochromic properties and SH have low value at low temperature and have high value at high temperature. Environmental adaptability tests such as ultraviolet irradiation test, pro- ton irradiation test, electron irradiation test, thermal cycle test, outgassing test were conducted also. The test results showed that thermal control coatings had very good space stability performance, which made the thermal control coatings attractive as potential active thermal control materials for future satellites.