Why should the base surface be treated before the epoxy floor paint construction? The main reason is that in order to make the final appearance of epoxy floor paint product quality and use effect better, the service life is longer. Maybe everyone is not very familiar with the quality of epoxy floor paint. In addition to the impact of raw materials, it also needs the experience of the construction master to control. The degree of base treatment, the proportion of materials used, the uniformity of coating, construction temperature and other factors will have an impact. No matter what kind of floor, there are certain requirements for the base treatment before the construction of epoxy floor paint. Let's take a look at the following:
1. The determination of PH on the surface of base must be less than 8. It should keep a certain basicity and meet the requirements of floor paint.
2. Surface must be firm and smooth, powder, crisp, bulging, peeling and so on must be paid attention to, and not too smooth, so as to affect bonding, relatively large defects, honeycombs, cracks, holes, linen surface, plate seams, etc. to be tidied up and smooth;
3. The surface of the base must be cleaned in place, no matter dust, clay, demoulding agent, oil stain, white ash and other impurities that may affect the adhesion of floor paint, we should pay attention to them. Otherwise, if the scope of floor paint cracks, warps and bulges is large, they need to be renovated and polished. Second construction;
4. The base must be kept dry. The moisture content of solvent coatings such as epoxy floor paint is not more than 8%, and that of water-based floor paint is less than 10% during construction.
I. Structural Strength
Structural strength must conform to the specifications. Structural strength can be measured by springback instrument on site. Generally, the base structural strength of epoxy floor paint is no less than 20N/MM2.
2. Time of hardening
For the newly constructed concrete foundation surface, it must have enough hardening time, rather than the construction of the concrete foundation surface as soon as it is dry. Generally, in the case of relative humidity of 65%, temperature of 20 degrees or more, it is necessary to dry naturally for more than 28 days before the construction of floor paint.
3. Base Water Content
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