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VACUUM ›› 2019, Vol. 56 ›› Issue (2): 19-21.doi: 10.13385/j.cnki.vacuum.2019.02.03

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Study on performance degradation prediction of spacecraft functional materials under long-term ultraviolet radiation

TIAN Hai1,2, YANG Sheng-sheng3, BA De-dong3   

  1. 1.National Key Laboratory of Materials Behavior and Evaluation Technology in Space Environment, Lanzhou 730000, China;
    2.School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;
    3.Lanzhou Institute of Physics, Lanzhou 730000, China
  • Received:2018-03-28 Online:2019-03-25 Published:2019-04-18

Abstract: UV radiation is one of the main factors that cause the degradation of non-metal materials on the external surface of satellites. The material must be sufficient evaluated for UV radiation effect before it can be used in space. Due to UV irradiation test acceleration factor can not be too large (near-UV does not allow more than 5 times), achieving the full life UV exposure dose of the material on-orbit through ground test will take too long time. In this paper, the degradation law and degradation mechanisms of typical spacecraft functional materials under UV irradiation are introduced. The modeling method of material degradation under UV irradiation are then proposed. This provides an effective mean to solve the evaluation of functional spacecraft material degradation under high dose UV radiation.

Key words: ultraviolet radiation, functional materials, simulation test, degradation law, performance prediction

CLC Number: 

  • V416.5
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