Coating technology: Construction Technology of wall spraying emulsion paint

Core tips: During the application of various latex paints, the paint can be applied by hand or by machine 1 Latex paint construction process: (1) The pressure of the air compressor for spraying shall be controlled at 0.5-0.8mpa, and the exhaust volume shall be 0.6m3 The throttle valve of the spray bucket shall be adjusted according to the air pressure, nozzle diameter and coating consistency, and the emulsion paint coating shall be sprayed into fog shape (2) When spraying, hold the spray bucket firmly, the discharge port shall be vertical to the wall, and the distance between the spray bucket and the wall shall be about 500mm If the spray bucket is too close to the wall, it will be too thick, sagging, white and other phenomena Application scope and advantages of roller ceramic coating Recommended introduction: the surface of ceramic rubber plate used for roller ceramic coating is cast into durable rubber plate by hundreds of independent small ceramic pieces Each ceramic piece has raised characteristics Under general conveyor belt pressure, thousands of unique cast bumps can produce positive traction, prevent slipping and extend the service life of conveyor belt roller At the same time, the bottom layer adopts high-quality rubber, which has strong elasticity and can play a good impact resistance role The scope of application of roller ceramic coating is one three six 83857180 (the same as V) 1 Roller coating in extremely harsh working environment 2 The belt joint is not suitable for fixing with iron buckle; 3 It is suitable for leather Paint Home News: all kinds of latex paint in the brush construction, you can use the manual brush method, can also use mechanical spraying method 1 Construction process of emulsion paint: (1) the pressure of the air compressor to be sprayed shall be controlled within 0.5-0.8mpa, and the exhaust volume shall be 0.6m3 The air throttle of the spray hopper shall be adjusted according to the air pressure, nozzle diameter and coating consistency, and the emulsion paint shall be sprayed into fog shape (2) When spraying, hold the spray bucket firmly, the discharge port shall be vertical to the wall, and the distance between the spray bucket and the wall shall be about 500mm If the spray bucket is too close to the wall, it will be too thick, sagging, white and other phenomena (3) The spray bucket shall be vertical to the wall, and shall not be inclined up and down to avoid false spray and blooming It is required to be close to each other, without leakage and sagging In case of missed spraying, it is necessary to make up the spraying in time, do not spray too hard at the beginning, and turn off the valve in time in case of no coating The spray bucket route (4) is to spray the side of the door and window first, and then spray the large surface, because the side of the door and window is easy to leak General ceiling wall spray two times can survive, two times interval time When spraying layer by layer, pay attention to the color consistency of the overlap of the upper and lower coating layers, the thickness should be uniform, and prevent leakage and flow elimination The spray bucket route is shown in the above figure, and the position of the spray bucket is shown in the following figure: the position of the spray bucket (5) before the finished product protection construction, protect the doors and windows and walls that are not to be sprayed After spraying, protect the mouth and corner with wood plate in time to prevent collision and damage When removing the shelves, the wall coating shall be strictly prevented from damage During the construction of oil workers, it is strictly forbidden to step on the completed parts, and prevent the oil tank from overturning and the paint from polluting the wall During the indoor construction, prevent the pollution of the spraying finish Balcony, rain cover and other outlets should be buried with hard plastic pipes, preferably without iron pipes, to prevent the corrosion of the opposite layer Non toxic and harmless environmental protection products shall be selected as construction materials, construction wastes and wastes shall be cleaned up in a centralized manner to avoid environmental pollution 2 Precautions for coating construction (1) uneven color, obvious secondary repair joints: The main reason is that the mix proportion is not well controlled, the admixture is not uniform; the spraying method is not the same, or the coating thickness is not the same; the joint is obvious due to the difference of water content between the post repair plaster and the original plastering layer, and the secondary repair of the surface layer Solution: the mix proportion shall be controlled by a specially assigned person, with reasonable ingredients and accurate measurement; the specially assigned person shall be responsible for the construction of the spray surface layer, with the same construction method and thickness of the surface layer; it is forbidden to press the scaffold strut against the wall, so as to avoid the secondary repair of the ash layer and affect the appearance of the coating (2) Hollowing and crack of spray surface layer: the main reason is that the bottom plastering is not divided according to the requirements, the area is too large, and the drying shrinkage is different, which will form hollowing and crack The surface layer will be pulled apart due to the empty crack of the bottom layer Therefore, the bottom ash shall be divided according to the requirements of the drawings to solve the shrinkage crack of the ash layer (3) The bottom plaster is not smooth, or the plaster pattern is obvious: mainly because the spraying layer is thin, and the defects on the bottom plaster cannot be covered up by the surface layer Therefore, it is required that after the bottom ash is plastered, it shall be inspected and accepted according to the standard of cement mortar plastering, otherwise, the surface coating cannot be applied (4) Obvious joint of surface layer construction: the main reason is that the joint is left at the grid or inconspicuous place in the surface layer construction, but it is not planned to throw the joint randomly, so the joint of surface layer coating is obvious Solution: in the middle of the construction, the tenon must be thrown to the grid joint, expansion joint or inconspicuous place behind the pipe, and it is strictly prohibited to throw the tenon in the block; pay attention to the thickness of the coating during the construction of the secondary tenon to avoid the overlapping of the coating, forming the different depths 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,