用EIS法研究丙烯酸聚氨酯涂层的光老化性能

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2007, Vol. 28 ›› Issue (3): 714-718.

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Research on the Photoaging of Acrylic Polyurethane Coatings Using Electrochemical Impedance Spectroscopy

ZHENG Tian-liang,ZHANG hua,WANG Xuan,WANG Yue-hong,ZHANG Zhang

School of Material Science and Engineering, Beijing University of Aeronautics and Astronautics

Received:2006-01-20 Revised:2006-07-13 Online:2007-05-10 Published:2007-05-10
Contact: ZHENG Tianliang

Abstract

Abstract:

The degradation of acrylic polyurethane coating when exposed to UV radiation is studied by monitoring its properties variation using electrochemical impedance spectroscopy(EIS).The properties of the coating such as porosity resistance,coating capacitance,polarize resistance and double electrolayer capacitance are changed obviously before and after being exposed to UV light.Electrochemical impedance spectroscopy demonstrates that the porosity of the film increases with the exposure time and it can be measured quantitatively.

Key words: coating, , photoaging, , EIS, , porosity

CLC Number:

V255.5

ZHENG Tian-liang;ZHANG hua;WANG Xuan;WANG Yue-hong;ZHANG Zhang. Research on the Photoaging of Acrylic Polyurethane Coatings Using Electrochemical Impedance Spectroscopy[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2007, 28(3): 714-718.

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Research on the Photoaging of Acrylic Polyurethane Coatings Using Electrochemical Impedance Spectroscopy

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