How to do gasoline resistance test of film?

The performance of the paint film against the action of gasoline is called gasoline resistance. The method is to immerse half of the paint in gasoline at 25 ± 1°C for a hard-dried painted sample, and the immersion time is determined according to the product standard. After the sample is taken out, absorb the oil beads with paper to check. The surface of the paint film is not allowed to have layering, wrinkling, bubbling, peeling, etc. If it becomes soft, discolored, or loses light, leave it for one hour and observe the recovery degree of the paint film. Cover the soaking line with a white paper strip 1 cm wide. If there is basically no difference between the soaked part and the unsoaked part, it is considered to be recovery. Note that the gasoline tank used in the test should be covered.