Coating process: treatment process of shrinkage defects in painting operation

Core tip: in the paint repair work, if the correct operation method is adopted, most common paint problems such as orange peel and bubbles can be avoided However, due to the number of repair procedures, the probability of paint surface problems is still very high Analyze the causes of problems, usually due to improper treatment of putty layer or primer layer, lack of control in painting process, poor working environment, and deviation of paint composition, etc If problems are found in the painting process, the work can be stopped and appropriate measures can be taken immediately According to the different problems, it can also be handled after the painting process Here's an analysis of painting Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Paint Home News: in the paint repair work, if the correct operation method is used, orange peel and bubbles and other common paint problems can be avoided However, due to the number of repair procedures, the probability of paint surface problems is still very high Analyze the causes of problems, usually due to improper treatment of putty layer or primer layer, lack of control in painting process, poor working environment, and deviation of paint composition, etc If problems are found in the painting process, the work can be stopped and appropriate measures can be taken immediately According to the different problems, it can also be handled after the painting process The following analysis of the shrinkage defects and treatment methods in the paint spraying operation: during the process of painting or film drying, wrinkles or shrinkage deformation appear on the surface of the finish paint, which is the most common defect in the repair of alkyd paint (1) Causes: ① improper drying methods lead to uneven drying of paint surface If the paint just sprayed is dried or forced to dry too fast, or the temperature of the paint shop is too high, the paint on the surface will dry faster and contract, which will delay the drying speed of the inner paint When the inner paint is dry, the surface paint will shrink Painting in workshops with unsuitable temperature or with large temperature changes shall be avoided ② If the paint layer is too thick or too wet, the inner paint will not release solvent at the same speed as the outer paint and dry, and the paint surface will be deformed and wrinkled The method of multiple spraying shall be adopted to reduce the thickness of one-time spraying finish coat ③ The wrong diluent or incompatible material was used The use of quick drying diluent or volatile paint diluent in enamel will cause shrinkage The quick drying diluent must be used according to regulations, and the dosage of quick drying diluent shall be reduced in high temperature season (2) Correction method: after the paint is fully dry, remove the wrinkled paint surface and paint again Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,