Before the floor paint is applied, in order to remove various foreign materials (such as oil stains, rust, dust, old paint film, etc.) attached to the painted surface, a good substrate suitable for the coating requirements of the floor paint is provided to ensure that the paint film has good properties. Adhesion, the surface of the coating must be pretreated before the floor paint is applied. The work done by this process is collectively referred to as pre-painting. The base surface treatment has the following points.
1. Ensure and improve the adhesion of the floor paint coating: The treated concrete base surface allows the floor paint primer to penetrate more into the concrete surface, which plays a key role in the service life of the entire floor paint coating. Especially when oil and water are present on the base surface, it is difficult to form a continuous coating due to poor compatibility of oil, water and paint. Even if a complete coating is formed, the coating adhesion will be greatly reduced, and the coating will fall off prematurely. . When the surface is dusty and not directly applied through the base surface care, the lighter makes the floor paint coating pockmark, which may cause the large area of ​​the floor paint coating to fall off and shorten the service life of the floor paint. Therefore, at the same time, it is necessary to prepare a smooth, flat and beautiful coating to create a good foundation for the entire floor paint project.
2, to create a suitable surface roughness: the floor paint coating attached to the concrete surface mainly depends on the mutual attraction between the polar molecules in the floor paint and the surface molecules of the substrate. After the concrete is ground by the floor grinder, the surface will be roughened. As the roughness increases, the surface area also increases significantly. The gravitational force of the coating and the base surface per unit area also multiplies, and is also the floor. The lacquer coating adhesion provides a suitable surface shape, adds mechanical toothing, and is highly beneficial for epoxy floor coating adhesion.
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