A Prediction Method for Electronic Radiation Degradation of Optical Properties of ZNO-type Thermal Control Coatings
A technology of thermal control coating and electron irradiation, which is applied in the field of space environmental engineering, can solve the problems that the fitting formula has no physical meaning and cannot reflect the thermal control coating, etc.
Active Publication Date: 2013-01-16
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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Problems solved by technology
It can achieve the purpose of life prediction, but the fitting formula has no physical meaning and cannot reflect the thermal control coating under space irradiation.
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[0043] Below in conjunction with the accompanying drawings and examples the present invention will be further described.
[0045] Step 1, carry out electron irradiation test to a certain ZnO thermal control coating. Through the test, the characteristic parameters of the thermal control coating
[0046] The electron energy used in the test requires less than 200keV.
[0054] The selected range of electron radiation acceleration coefficient R is 100 to 1000. Assuming that the designed service life of the satellite is N years, the
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The invention provides a method for predicting the degradation of the optical properties of ZnO thermal control coatings by electron irradiation, which belongs to the field of space environment engineering. The present invention utilizes the existing degradation model of the optical properties of the ZnO thermal control coating under electron irradiation, obtains full-spectrum diffuse reflectance data through experiments, and calculates the absorption corresponding to each electron irradiation fluence point according to the data. rate change. Afterwards, the dose depth distribution of electrons in the ZnO thermal control coating was calculated. Then, the unknown parameters in the degradation model are solved to obtain the degradation model for this ZnO thermal control coating. The obtained model is used to predict the degradation of optical properties of ZnO thermal control coating under electron irradiation. The method of the invention greatly reduces the workload of the electron irradiation test of the ZnO thermal control coating, and is of great significance for studying the degradation law of the optical properties of the ZnO organic white paint under space electron irradiation and the prediction of long life.
Description
A Prediction Method of Electron Radiation Degradation of Optical Properties of ZnO-Based Thermal Control Coatings technical field The invention belongs to the field of space environment engineering, and relates to a kind of ZnO class thermal control coating optical characteristic electronic radiation degradation method of prediction. technical background Satellite thermal control system is to guarantee that all kinds of devices and instruments in the satellite can be in a relatively stable temperature environment An important system for the work, and the thermal control coating is the most widely used coating material in the satellite thermal control system, with thermal control performance, It is generally composed of binders and pigments, aluminum flakes or carbon black, and is the key to realizing passive thermal control of satellites. satellite in orbit When operating in orbit, the thermal control coating covering the outer surface of the satellite will be affec...
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Login to View More IPC IPC(8): G01M11/02G01T1/00
Inventor 李丹明张洪鹏田海薛玉雄薛华
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH