Acceleration method for barrel properties test of organic coating

A protective performance and organic coating technology, which is applied in the field of accelerated testing of the protective performance of organic coatings, can solve problems such as difficult detection of electrochemical response signals

Inactive Publication Date: 2005-01-26
HUNAN UNIV
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Problems solved by technology

However, for some systems, such as engineering protective coatings and long-term storage of anti-rust oil, it is

Method used

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Embodiment Construction

[0007] The specific embodiment of the present invention is: put the oil film coating test piece or the coated multi-electrode test probe into the 3-5% NaCl solution for a certain period of ultrasonic vibration, and then use conventional salt spray, damp heat test or electrochemical Methods The protective performance of the organic coating was tested. The ultrasonic vibration frequency was 28KHZ, the ultrasonic vibration power was 100W, and the ultrasonic vibration time was 20 to 30 minutes. The comparison of the test results with the conventional test data is shown in Table 1:

[0008] It can be seen from Table 1 that after 20 or 30 minutes of ultrasonic acceleration, part of the oil film will be rusted after standing for a period of time in a humid heat or salt spray test. Ultrasonic vibration accelerates the corrosion process of the coating system. Usually, the protection performance of different systems can be judged within 1 to 24 hours. However, the conventional damp heat ...

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Abstract

An accelerating method for measuring barrier property of organic coating, which is to put a smeared multiple-electrode probe or smeared coupon into a liquor with three to five percent of NaCl for some time of ultrasonic vibration. Later to test the barrier property of the organic coating through wet heat and electrochemistry. With the deployment of ultrasonic vibration, this invention can greatly decrease the testing time of barrier property to the ten percent of original time and can effectively shorten the circle of new product development and on-line measuring and monitoring and can overall evaluate adhesive force of organic coating and can improve the measuring efficiency of barrier property of organic coating so as to save manpower and materials. This invention is especially suitable for the measuring of barrier property of organic coating with good barrier property.

Description

technical field [0001] The invention discloses an accelerated method for testing the protective performance of an organic coating. Background technique [0002] The damage caused by the chemical or electrochemical action of metal materials in the environment is generally called metal corrosion. Due to metal corrosion, the whole machine needs to be replaced or repaired frequently, or even scrapped, which directly causes a large loss of metal materials. According to relevant data, the whole The world's annual steel loss caused by corrosion is equivalent to about 10% of steel production, and the indirect loss caused by corrosion is even more serious. Inhibiting metal corrosion and prolonging its service life are important connotations of metal protection methods. Applying organic coatings to metal surfaces for protection accounts for a considerable proportion of the entire metal protection measures. The evaluation of the protective performance of organic coatings is usually c...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N17/02G01N27/26
Inventor 黄桂芳陈迪平靳九成吴翠兰王镇道靳浩朱小莉
Owner HUNAN UNIV
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