Now everyone’s life is getting better and better, and more and more people are buying houses. The significance of the house is no longer merely a matter of labor. People are paying more and more attention to the renovation of the house and their requirements are constantly increasing. In a variety of decoration materials, crack paint has gradually come to people's perspective.
Crack paint construction method
The crack paint is a one-component paint, and it is not necessary to use other curing agents when mixing the paint. The construction viscosity can be adjusted by using the appropriate special crack water produced by the same factory to facilitate the construction. After the well-distributed crack paint is fully mixed, the filter can be constructed by filtering with a 100-200 mesh filter. The lacquer is ready for use. Once it is formulated, it should be used within 2 hours and no more than 4 hours. After the cans are opened, they must be sealed immediately to prevent them from deteriorating by volatilization and moisture absorption, which will affect their use.
Construction crack paint generally has the best spraying construction effect, and the crack texture is rounded naturally and evenly; if the hand brush construction is adopted, the cracks will be affected by the uneven gesture and direction when brushing paint, resulting in uneven crack texture and a feeling of rough matting. . Before the construction cracks, the paint is usually applied with a primer. The primer can be made with the matching crack primer produced by the same factory. It can also be colored with aluminum powder, pearl powder, gold powder, etc. Generally speaking, the contrast between the color of the primer and the top coat is different. The bigger the three-dimensional effect, the better the effect. However, if it is constructed on polystyrene plastic (PS), crack paint can be sprayed directly without using primer. Finally use a semi-matt, matt clear finish or two-component PU varnish over the cracked paint surface. Before the large-area construction, the sample must be sprayed on the small sample plate that has been sprayed with the primer. According to the effect of the crack size, the construction viscosity of the crack surface paint, the thickness of the paint film, and the shape of the spray gun, air pressure, and the amount of paint to be sprayed are selected. (Fixed).
Crack lacquer construction common problems and solutions Tips
Cracks in cracked paint are too fine or even cracked
Because the crack pattern is presented by the cracking of the paint film, it cannot be sprayed too thick at one time, otherwise the cracks will be fine and even the crack surface will not crack. Care should be taken to control the amount of oil and the number of guns to select the best pattern. At the same time, because the cracked paint is sensitive to temperature and humidity, the temperature is too low, cracks are not even cracking; the temperature is too high and the pattern is large. Therefore, when the ambient humidity is too high, the temperature is too high, and the temperature is too low, it is not suitable for construction. Generally, the temperature is 25° C. and the relative humidity is 75%, so as to avoid adverse effects.
2, uneven crack size
The uniformity of the crack size is influenced by many factors, especially the skill of the construction personnel in mastering the spraying techniques. This can only enhance the training and training of construction personnel. There are no other shortcuts. But also to grasp the principle of crack size: If you need a large crack effect, the primer film thickness should be thicker, but the crack paint should also be sprayed 2-3 times, and the gas volume does not need too much; if you need a small crack effect, then The primer does not need to be too thick, but the cracked paint should be sprayed thin, and the gas volume can be slightly larger. However, the homogeneity of the coating should always be maintained in order to achieve a uniform cracking effect. In particular, only one coating can be applied during spraying, and one shot should be successful without returning the gun or making up the gun.
3, after the crack cracking paint off
Due to the large powdery cracks, large shrinkage, low flexibility, and poor adhesion, the paint surface is easier to fall off after shrinkage. In order to make the crack lacquer strong and durable, more bright and beautiful, after the crack paint is dry, polished smooth, clean the surface after the cover half matt, matt nitro lacquer or polyester paint, polyurethane paint, two component PU Varnish, etc. .
Crack paint construction skills
Crack lacquer construction requires certain skills, crack size, uniformity and the viscosity of the paint, spraying gas, oil, thickness and so on. Paints with the same cracking effect should have a uniform construction viscosity, and paints with the same cracking effect should be uniform in color. The air pressure of the air compressor should be the same when spraying, not when it is large or small. Spray gun diameter to 1.5-2.0mm prevail, the outlet should be smooth. The distance between the guns and the interval should be consistent, and the displacement and the amount of oil should be grasped.
The above is a brief introduction for Xiaobian. If you want to know more related information, please continue to pay attention to Qijia Consulting. More exciting consultation, please stay tuned.
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