Paint film water resistance test

Paint film water resistance test can measure the water resistance of the paint film through two methods: water immersion test method and boiling water immersion test method. After the specified test time is reached, the water resistance performance of the paint film surface is expressed by the change phenomenon.
Zhongke Testing Reliability Experiment Center has the capability of reliability testing of various paint films and provides professional water resistance testing services for paint films.

1) According to use: there are wood paint, iron paint, glass paint, aluminum paint;
2) Divided by state: water-based paint and oil-based paint. Water-based paint is mainly latex paint, while lacquer paint, polyurethane paint, etc.;
3) According to the form of action: volatile paint and non-volatile paint;
4) According to the surface effect: transparent paint, translucent paint and opaque paint.

1. Water immersion test method
Fill a glass sink with distilled or deionized water. Unless otherwise specified, adjust the water temperature to 23 ± 2°C and maintain this temperature throughout the test. Place three test panels into it and soak 2/3 of the length of each test panel in water.
2. Boiling water immersion test method
Fill a glass sink with distilled or deionized water. Unless otherwise specified, keep the water at a boil until the end of the test. Place three test panels into it and soak 2/3 of the length of each test panel in water.

GB/T 1733-1993 Determination of water resistance of paint films
GB 1727 General preparation method of paint film
GB 1764 Paint film thickness determination method
GB 3186 Sampling of coating products
GB 6682 laboratory water specifications