Comprehensive evaluation method for corrosion resistance of paint film based on environmental factors

Abstract

The invention discloses a comprehensive evaluation method for the corrosion resistance of a paint film based on environmental factors. The comprehensive evaluation method comprises the following steps: determining a corrosion resistance test item; determining an importance coefficient corresponding to each item in the corrosion resistance test items in an application environment, and calculating a weight coefficient of each item; obtaining test results of N paint films corresponding to the corrosion resistance test item; and comprehensively evaluating the performance of each paint film applied to the corresponding environment by combining the importance coefficient and the weight coefficient of the corrosion resistance test item of the application environment and the test result of the corrosion resistance test item of the paint film. According to the method provided by the invention, various environmental factors influencing the corrosion resistance of the paint film can be synthesized, the corrosion resistance of the paint film can be comprehensively and accurately evaluated, and the most suitable paint suitable for a specific environment is guided to be selected.

Description

technical field [0001] The invention belongs to the field of paint film corrosion resistance, and in particular relates to a comprehensive evaluation method for paint film corrosion resistance based on environmental factors. Background technique [0002] At present, the evaluation of the corrosion resistance of the paint film in the construction machinery industry is mainly based on the neutral salt spray test, the heat and humidity resistance test, the temperature change resistance test, the heat resistance test, the acid resistance test, the alkali resistance test, the salt water resistance test, and the oil resistance. The corrosion resistance of the paint film is evaluated by a single factor such as the test, and the lack of environmental factors leads to inaccurate evaluation results of the corrosion resistance of the paint film, and it is impossible to accurately evaluate the corrosion resistance of the paint film. Rust problem. The actual application environment of c...

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Problems solved by technology

[0002] At present, the evaluation of the corrosion resistance of the paint film in the construction machinery industry is mainly based on the neutral salt spray test, the heat and humidity resistance test, the temperature change resistance test, the heat resistance test, the acid resistance test, the alkali resistance test, the salt water resistance test, and the oil resistance. The corrosion resistance of the paint film is evaluated by a single factor such as the test, and the lack of environmental factors leads to inaccurate evaluation results of the corrosion resistance of the paint film, and it is impossible to accurately evaluate the corrosion resistance of the paint film. rust problem

The actual application environment of construction machinery products is relatively complicated. Not only the results of a single corrosion resistance test item must be qualified, but also higher requirements for some corrosion resistance test items of the paint film should be considered in different use environments. Corrosion resistance Neutral salt spray test and damp heat test put forward higher requirements. At present, the methods for evaluating the corrosion resistance of paint films mainly refer to the methods for evaluating the corrosion resistance of metal materials, including salt spray test method, corrosion solution immersion method, electrochemical method, etc. However, these methods are not only single-point evaluations, but also cannot comprehensively evaluate the corrosion resistance of paint films based on the use environment, resulting in the inability to judge the superiority of several different paint films. Inferior, can not effectively guide the choice of paint

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