Epoxy flooring paint is a two-component flooring material, which needs to be mixed and stirred proportionally. Generally, the surface will dry 24 hours after the completion of construction. However, some novices often encounter the phenomenon that the surface of epoxy flooring paint is still sticky after a period of construction. Adhesion is the phenomenon that after the drying of epoxy floor paint, there are still some sticky fingers or the drying film appears again. So what causes epoxy floor paint to stick after construction?
The main reasons for the stickiness of epoxy floor paint are as follows:
1. Undertreatment of Foundation Ground
Before the construction of epoxy floor paint, the oil stains, acid and alkali, wax on the foundation floor were not cleaned up. When the temperature rises, these pollutants will flow from solid to liquid and seep out, resulting in the stickiness and shelling of epoxy floor paint.
2. Construction problems
The construction technology of epoxy floor paint includes primer construction, middle mortar layer construction, middle putty layer construction and top paint construction. If the previous process is not completely dry, the construction of the next process may cause the epoxy floor paint to stick after construction.
3. Environmental issues
The construction environment of epoxy floor paint should be controlled at 10-25 degrees Celsius, 75% relative humidity and 8% moisture content of concrete. When the humidity is more than 75%, condensation will occur on the surface of the coating. Condensed water will damage the curing agent and cause the phenomenon of whitening, losing light, sticking and sticking back of the coating, which greatly reduces the decorative effect of the surface.
4. Saponification Phenomenon
If the concrete floor contains alkaline substances, the epoxy floor paint will be saponified during construction, which will cause the film to become soft and the viscosity to rise.
Method of preventing adhesion of epoxy floor paint after construction:
1. Before the construction of epoxy floor paint, it is necessary to clean up the oil, acid, alkali and wax on the foundation floor.
2. The first paint must be thoroughly dried before applying the second paint.
3. In the case of high temperature and high humidity, the construction interval of each paint should be prolonged appropriately, so the top coat should not be applied as far as possible in cloudy and rainy days.
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