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KNOWLEDGE

Main reasons and analysis of paint peeling between water-based wood paints

Main reasons and analysis of paint peeling between water-based wood paints

05 Jan, 2023

Before the construction of water-based wood paint, the combination of different system coatings must be tested for adhesion, including solvent-based color correction layers. Do not think that the surface looks, feels, and hardness is OK. In the actual use of water-based paint-coated furniture, due to the accidental bumping of users, if the process flow has not been strictly tested, and the coating system is not properly matched, the problem of paint stripping will directly appear.
Solvent-based or water-soluble primers, water-based topcoats, some run off oil directly, and some delaminate afterwards. If the water-based topcoat is not water-resistant, it will be exposed to the air for a long time, and the repeated moisture absorption and evaporation will easily cause poor adhesion and delamination.
Most of the oil-based primers have high hardness, dense connective tissue, and good slipperiness. Although the water-based topcoat should be sprayed after grinding, it seems that it should have adhesion, but it is also a superficial layer, and the risk of paint peeling is great.
Unlike latex paint, which is rolled on the cement wall or putty layer, it penetrates the capillary and takes root. More importantly, the polarities of different coatings are different and the compatibility is poor.
Therefore, the combination of coatings of different systems from my personal point of view requires experimental tests to be in place, and time is needed to verify them. Think more about the problem, and think about the environment in which the coating will be placed after it is combined, and what substances may be frequently exposed to.
Haisun water-based paint is refined from high-performance polymers, with low construction odor, high hardness of the paint film, fullness, good hand feel, and excellent film formation, which can effectively protect household wood and provide excellent decorative effects. It has strong adhesion to PU and PE bottoms, and the oil-based primer water-based topcoat has a good effect. Haisun Technology is a manufacturer that solves the adhesion of water-based wood paint to PU primer!