Nowadays, the more popular epoxy floor paints belong to a large category of floor paints, which can be divided into many kinds according to the different composition, and different floor products have different performances and functions and application fields, such as wear-resistant, pressure-resistant, antistatic and other common floor functions, no matter what kind of function they are. The most important thing is the surface treatment before construction. Most of the paint film problems we often see are caused by improper substrate treatment. Today we focus on the surface treatment and requirements, as well as the impact of improper surface treatment. 环氧地坪施工前地面要求及处理
Ground requirement and treatment before epoxy floor construction
The ground treatment before the construction of epoxy floor paint, like other industrial paints, requires a clean and dry base material without oil and dust. Because the construction base surface of epoxy floor paint is mostly cement and concrete, we should also pay attention to the fact that there are no cracks and voids on the concrete floor at this time. Old concrete floors may be loose and dusty, and need to be strengthened to improve adhesion.
Careful polishing of concrete should not omit any unpolished areas, especially in areas with poor strength, so it is necessary to polish to areas with strong strength.
Otherwise, the loose area will fall off with the coating, and the time will be very fast. Maybe it will fall off before the project is settled.
At the same time, it is suggested that two routes of grinding should be carried out, and the two rounds should be cross-shaped, so as to prevent leakage and to grind more thoroughly.
After polishing and cleaning, it is suggested to use vacuum cleaner for better penetration of paint, high water tension and easy to affect penetration.
For the ground without expansion joints, deep cutting should be carried out to prevent irregular cracks due to the internal stress of concrete in the future. Where there are expansion joints, the steel bar hook is used to clean the joints, and then vacuum cleaner is used.
Where there are irregular cracks, it is necessary to cut the cracks, repair them with epoxy mortar, and pay attention to the difference of the repair height.
The corner grinding is carried out with the corner grinder on the side of the column and corner.
Where there is water, water is treated with a water absorber, the mud on the surface is removed, and then the ground is washed with a washing machine with water to absorb water, which is cleaned and aired for one day, followed by primer.
Where there is greasy dirt, first remove the greasy dirt from the surface, then clean it with detergent, and then bake it on fire. If the greasy dirt is very serious, it is necessary to knock out the concrete and re-pour it.
The influence of surface treatment on the construction of epoxy floor before construction
Poor skin pressure, peel off layer.
If epoxy floor paint is made directly on concrete cement floor whose strength does not reach C25 or above, when it is rolled by heavy forklift trucks, it will cause the epoxy floor to be collapsed and cracked together with the base, resulting in peeling and delamination.
Because the epoxy floor is only a thin film attached to the foundation floor, if the ground is not polished flat before the epoxy floor paint is applied, the surface of the epoxy floor will be uneven after construction, which greatly affects the overall aesthetics of the epoxy floor.
Epoxy floor loss
Normally, the surface of epoxy floor paint should be bright and flat after construction. If the ground is not fully polished and smooth before construction, it will lead to pits and depressions after construction, and lose its due gloss.
Foundation surface contamination is a very common phenomenon. If the oil contamination is not cleaned up before the construction of epoxy floor paint, it will inevitably lead to the epoxy resin primer can not penetrate into the foundation ground very well, seriously affecting the adhesion of the floor paint coating, and later there may be some problems such as peeling and shelling.
Therefore, in order to do a good job of epoxy flooring, we must do a good job of grass-roots floor treatment, do a good job of cleaning, to ensure that the grass-roots floor meets the construction requirements of floor paint, as long as we do a good job of preparation before painting to ensure excellent paint film painting effect.
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