"Standards and Applicability of Architectural Coating Accelerated Corrosion Aging Test Methods" first expounded the importance of testing the aging performance of architectural coatings, and further focused on introducing several existing artificial accelerated photoaging test methods and accelerated corrosion test methods. Accelerated light aging test methods include carbon arc light aging test method, ultraviolet fluorescent light aging test method, xenon light aging test method, and the application standards of several methods are reviewed. Furthermore, compared with the single artificial accelerated test method, a more advantageous comprehensive corrosion aging test method is introduced. Finally, several indoor and outdoor correlation evaluation methods are introduced, including the failure mechanism comparison method, the Pearson product distance correlation coefficient method, and the Spearman rank correlation coefficient method, among which the Spearman rank correlation coefficient method is a commonly used correlation quantitative analysis method for coating aging at this stage .
Conclusions: (1) Most of the existing coating accelerated corrosion aging test method standards are developed based on the research results of industrial coatings, which are not fully applicable to architectural coatings, and need to be developed and applied according to the characteristics of architectural coatings and their use environment Accelerated corrosion aging test method, and then formulate corresponding standards.
(2) The single aging test method cannot simulate the natural aging weather conditions of the coating well, but the comprehensive environmental test can simulate various environmental factors in actual use, thereby improving its correlation with the natural exposure test, which is accelerated corrosion aging The inevitable trend of experimental development. Researchers should formulate test condition parameters for architectural coatings and their actual use environment to ensure the rationality of the design scheme, so that the accelerated test can simulate the actual outdoor use environment as much as possible in the initial stage of design, so as to improve the relevance of test results.
(3) The correlation evaluation is the link between the artificial accelerated aging test and the atmospheric natural exposure test. The correlation evaluation is an important means to evaluate the effectiveness of the artificial accelerated aging test. The accelerated aging test method with good correlation is more practical Therefore, the correlation evaluation method is also an important part of studying the durability of architectural coatings.
