Common disadvantages of PE paint (11) "cracking"

Disadvantages: cracking

cause
① Too much drier, the surface layer dries too fast.
②The surface coating has poor weather resistance.
③The primer layer is too thick, and the surface layer is applied before it is dry.
④ The paint is not matched, and the hardness of the bottom surface layer is too different.
⑤The environment is bad, and it is used in the environment of harmful gas.
⑥The paint expires, the resin and the pigment are stratified, and the uneven mixing is easy to crack.
⑦The surface coating has low solid content and poor film-forming adhesion.

Solution
①The drier should not be too much, but an appropriate amount must be used.
②Choose paint with better weather resistance.
③After the base coat is completely dry, apply the top coat.
④ Pay attention to the matching use of bottom layer and surface layer paint.
⑤The paint should try to avoid construction in an environment with air pollution.
⑥ Pay attention to check the production date, and pay attention to mixing evenly when using.
⑦Pay attention to the solid content in the coating, and not add too much volatile matter.