The types and colors of materials used for latex paint are in accordance with the design requirements. The color of the painted surface is the same. It is not allowed to have quality defects such as through the ground, leaking brush, falling powder, skin alkali, peeling and biting. When spraying with a spray gun, the spray point is even and even, no skin phenomenon is allowed, no flow is allowed, the hand touch paint film is smooth, no powder is removed, doors and windows, lamps, furniture, etc. are clean, no paint marks.
The common quality defects of latex paint are blistering, anti-alkali falling powder, falling, bottoming and uneven coating.
(1) Foaming: The main reason is that the base layer is improperly treated, and the coating layer is too thick, especially when the large core board is used as the base layer, foaming is likely to occur. Method of prevention In addition to the uniformity of the paint before use, and master the consistency of the paint, you can brush the 107 glue on the bottom putty layer before painting. In the rework repair, the foaming and peeling should be cleaned, first brush 107 glue and then repair.
(2) Anti-alkali powder: The main reason is that the base layer is not dry and wet construction, and the unpainted primer and the coating are too thin. If it is found that the anti-alkali powder is removed, it should be reworked and re-coated, and the brushed material should be removed, and then the base layer should be dried before construction. The construction must be done with a sealing primer first, especially for new walls, the consistency of the topcoat should be appropriate, and the white wall should be slightly thicker.
(3) Flowing: The main reason is that the viscosity of the coating is too low and the coating is too thick. During the construction, the consistency of the paint must be adjusted, and the water should not be added too much. During operation, the pen must be diligent, less sturdy and diligent to avoid sag and runny. If a falling cake occurs, wait for the paint film to dry and then sand it with fine sandpaper. After cleaning the finish, apply a top coat.
(4) Through the bottom: mainly when the paint is too thin, the number of times is insufficient or the material quality is poor. In the construction, the product with high solid content and strong hiding power should be selected. If the bottom is found, the number of paintings of the top paint should be increased to meet the wall painting requirements.
(5) The coating is not smooth: the main reason is that the paint liquid has impurities, the paint liquid is too thick, and the emulsion paint quality is poor. In the construction, a brand with good leveling should be used. Before the last coat is applied, the paint should be filtered and used. The paint solution should not be too thick. When the coating is not smooth, it can be smoothed with fine sandpaper and then painted again.
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