1. Pink flower
The surface of the coating film is affected by the sunlight, oxygen and moisture in the atmosphere, and the aging is powdery and detached, and the colored powder oozes out from the surface.
Etiology
1) The coating film is affected by ultraviolet rays, oxygen and moisture during use, aging occurs, the paint base is destroyed, and the pigment is exposed.
2) The weather resistance of the selected coating is poor.
prevention
1) According to the conditions of use of the object to be coated, select automotive coatings with excellent weather resistance, and carry out overhaul painting in time. Never use interior paints such as interior nitro sprays to refinish the body of a car.
2) Strengthen the maintenance of the coating film.
remedy
1) Slight chalking, which can be removed with light buffing and will restore luster.
2) Heavy powdering needs to be polished with coarse wax.
2. Weathering and erosion
Weathering is an irreversible damage phenomenon of coating film. This is a more serious state of film damage than chalking, accompanied by a decrease in film thickness until the substrate is exposed.
Etiology
1) The weather resistance of the coating used is poor.
2) The object to be coated has been used for a long time and the environment is harsh.
prevention
1) Select a coating with excellent weather resistance according to the conditions of use of the coated object.
2) According to the damaged state of the painted surface, carry out new painting in time (that is, carry out overhaul painting in time).
