Due to various factors, the epoxy floor will be partially cracked soon after coating. According to the shape of cracks (size, depth, width), it can be divided into hair cracks, fine cracks, coarse cracks, turtle cracks, crocodile skin cracks and glass cracks. The following epoxy flooring factory workers on the three common ways of epoxy flooring cracking for you to carry out the following detailed introduction, and the corresponding solutions, together to learn about it! uuuuuuuuu
After coating, the naked eye is not easy to identify, but fine lines can be observed by ten times microscope. It is caused by the internal force of the coating which exceeds the cohesion of the film itself and causes the rupture of the coating surface. It does not damage the appearance of the film, and is the inevitable result of the aging of the film. But if this happens soon after painting, it is a pathological condition.
2, coarse fissure
The coating has obvious cracks after coating, and sometimes it can see the bottom.
After coating, the coating appeared to be shaped like cracks on the back of the turtle. Crocodile skin cracks and glass cracks also have similar phenomena.
We have analyzed the specific causes of cracking. While we understand the causes of cracking, what we need to do is how to solve these cracking problems. Luoyang Xin and Yanli epoxy flooring have more than ten years of practical construction experience in the epoxy flooring industry. For these problems, there are countless experiences. There are no problems in solving these problems.
Under most conditions, the cracking of epoxy floor surface is also caused by coating damage related to formulation, which is caused by aging of coating film. Unlike microcracks and crocodile cracks, it is no longer a surface problem, but the whole coating is damaged and exposed to the substrate, so it belongs to serious coating damage. It is also caused by the stress in the coating exceeding the strength of the coating itself. If the micro-crack is the result of surface stress, then the crack is the result of the stress of the whole coating and the stress between the coating and the substrate.
To avoid cracking, we'd better choose suitable resins, plasticizers and pigments to solve the cracking problem. Fibrous or needle like reinforcing pigments help to enhance coating and resist cracking. The addition of plasticizer or plasticizer also helps to soften the coating, making it more ductile and elastic, and reducing the stress caused by temperature change, climate cycle and continuous polymerization reaction.
Coatings applied to wood are usually more likely to crack than those applied to steel, which is caused by the texture of wood. When the wood expands and shrinks, its transverse dimension changes much more than along the texture direction. Therefore, the transverse stress of the coating is larger than that of the longitudinal direction, and the crack lines are linear along the texture direction.
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