The object of this paper is to study the application of accelerated light aging tests in the quality evaluation of automotive coatings. Experimental materials for automotive coatings were prepared, and a xenon lamp weathering tester was used to simulate conditions such as natural light exposure. The aging degree and performance changes of the samples under simulated conditions were analyzed. A 2000-hour aging test was conducted on specific automotive coating samples under highly simulated actual working conditions. The gloss loss did not exceed 3%, the color difference △E was ≤3.0, the maximum thickness variation was less than 2μm, and the adhesion met relevant requirements. After the accelerated light aging test, the gloss stability of the automotive coating samples was strong; the fading phenomenon was not significant; the wear degree was low. It indicated that the selected automotive coating samples were of good quality and met the needs of practical production applications.

Qianyao Xiang. Application of Accelerated Light Aging Test in the Quality Evaluation of Automotive Coatings. Academic Journal of Engineering and Technology Science (2024) Vol. 7, Issue 5: 14-18. https://doi.org/10.25236/AJETS.2024.070503.

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