Marine atmosphere simulated accelerated testing method for coating

Abstract

The invention provides a marine atmosphere simulated accelerated testing method for a coating. The marine atmosphere simulated accelerated testing method is characterized in that the damp heat test, the ultraviolet condensation test and the salt spray test are carried out sequentially and are determined according to the conversion principle of natural environment spectrum equivalent of the simulated practical environment, so that the combined circulation test can be carried out according to the action sequence of the practical environmental factors; the environmental element intensity, the duration time, the occurrence frequency and the time scale of the simulated practical environment, which have a leading role for coating ageing, are subjected to analytic statistics, the natural environment spectrum is developed, and the accelerated testing environment spectrum block formation, the test parameter magnitude and the action time are designed and simulated based on the conversion principle of natural environment spectrum equivalent, so that the equivalent simulation of main factors of the marine atmosphere environment and the action sequence are ensured, the practical conditions such as high sunlight radiation in day time, condensation at night, alternation of wetting and drying, salt mist erosion in morning and evening and the like of the marine atmosphere environment are really reflected, the accuracy of simulating multi-factor coupling effect in a laboratory simulation is greatly improved, and the purpose of rapidly and accurately evaluating the coating environment adaptation is achieved through a short-period laboratory acceleration test.

Description

technical field [0001] The invention relates to a coating ocean-atmosphere environment simulation acceleration test method based on the natural environment spectrum equivalent conversion principle, in particular to a cycle combination simulation acceleration test method for rapid evaluation of coating environmental adaptability. technical background [0002] Coating technology is the most effective and economical method for corrosion protection of metal materials, especially steel and aluminum alloy structures. The coating will encounter the comprehensive effect of various environmental factors during the use process, aging and degradation will occur, and then there will be damage modes such as loss of light, discoloration, chalking, blistering, and peeling off, which will seriously affect the protective effect of the coating on the base metal. Therefore, how to accurately and quickly evaluate the environmental adaptability of coatings is of great significance for the scient...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a laboratory simulated marine atmospheric environment acceleration test method based on the conversion principle of natural environment spectrum equivalent, which can be used for rapid assessment of coating marine atmospheric environment adaptability and screening optimization of various coating systems, which overcomes the traditional Insufficiency of Poor Correlation Between Accelerated Test and Natural Environment Test

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