The ISO 20566 standard, developed by the International Organization for Standardization (ISO), defines a test method for evaluating the scratch resistance, or car wash resistance, of organic paint coatings, particularly those used in the automotive sector . The washing process is simulated in a laboratory setting using a rotary brush and synthetic dirt. The test conditions in this standard are designed to closely resemble real car wash conditions. If the test parameters are appropriately selected, this method can also be used to test protective plastic films and plastic components.
When applying this test method, it should be taken into account that test results will not remain constant over time as a result of changes in brush material. As the brush ages, the test will become more severe. As a result, the test method described here is only suitable for comparative testing at any one time and using relatively short runs. Readings obtained using equipment with different total hours of operation should not be compared with each other.
For the purposes of this standard, the phrase double pass refers to a single back and forth movement of the test panel holder, the phrase test area, the evaluated area, and the phrase reflow effect refers to the ability of the pavement surface to return to its original appearance after damage such as scratching.
The laboratory wash unit provides a practical simulation of the stress on painted surfaces in an automatic car wash. During the procedure, a washing suspension is sprayed onto the brush that simulates road dirt.
The tested samples are examined after drying for two hours. These reviews are carried out as follows:
Among the numerous test, measurement, analysis and evaluation studies it has given for businesses in various sectors, our organization, with its trained and expert staff and advanced technological equipment, has been trying to determine the scratch resistance of a coating system (paints and varnishes) by using a laboratory scale car wash within the scope of ISO 20566 standard. It also provides testing services for
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