The aging degree of epoxy floor coatings can be judged by eliminating each characteristic and corresponding measures should be taken. In the early stage of light loss and discoloration, epoxy floor paint can be re-painted on the part of light loss or discoloration, and its decorative effect can be reconstructed. But in the powdering stage, not only the decorative effect is lost, but also its practical performance is declining. At this time, it is necessary to completely remove the coating and re-coat. Everything's aging is traceable, and so is epoxy flooring. The aging of flooring paint is also a gradual process. We can judge from the following characteristics:
I. Loss of Light
Loss of gloss is the initial feature of the ageing of epoxy floor paint film. The surface of the floor is exposed to ultraviolet radiation for a long time, which causes photochemical reaction, which degrades the epoxy resin composition and gradually loses its original gloss until it develops into total loss of gloss.
The gloss of epoxy flooring paint film is an important index to reflect the decorative effect of epoxy flooring. If the coating is not glossy, there will be no decoration.
There are many factors that cause the discoloration of the epoxy floor paint film, but the discoloration of the film is another characteristic of the beginning of the aging of the epoxy floor paint film. From the normal color to some whitening, some yellowing, or some places darker, some lighter, and so on, these are all discoloration. The decorated epoxy floor seriously affects its decorative effect.
If the first two characteristics are the initial characteristics of epoxy floor ageing, then pulverization is the symbol of the aging of epoxy floor coating. The reason of powdering is due to the interaction of ultraviolet radiation and oxygen, which leads to the degradation of resin molecular chains, separation between resin and pigment particles, and dedusting.
Generally, the powdering of epoxy flooring occurs after the film of epoxy flooring paint has undergone a very serious loss of light and color, that is to say, at this time, the epoxy flooring not only has completely lost its decorative properties, but also its practical performance has begun to decline, indicating that the aging of the film has reached a serious stage.
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