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    Home > Coatings News > Paints and Coatings Market > Paint common sense: no longer be cheated by "paint"! Count 8 crimes of paint and coating

    Paint common sense: no longer be cheated by "paint"! Count 8 crimes of paint and coating

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tip: paint is a must for decoration! Therefore, there will be more or less problems in the decoration Xiaojiang will take you to take stock of the 8 crimes of paint and provide solutions Hurry to learn! One possibility is that the surface is too smooth If the original paint is glossy or powdery (with untreated color paste paint), the new paint will not stick firmly on the surface There is another possibility that the wood is rotten or the metal has rust spots, or the paint will peel off due to poor quality [solution] Small area paint peeling 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: paint, is necessary for decoration! Therefore, there will be more or less problems in the decoration Xiaojiang will take you to take stock of the 8 crimes of paint and provide solutions Hurry to learn! One possibility is that the surface is too smooth If the original paint is glossy or powdery (with untreated color paste paint), the new paint will not stick firmly on the surface There is another possibility that the wood is rotten or the metal has rust spots, or the paint will peel off due to poor quality [solution] for small area of paint peeling, first polish with fine sandpaper, then apply putty, brush primer, and then paint again The paint must be scraped off and repainted in case of large area peeling [second crime] the blister of paint will break the blister One situation is that there is water coming out, that is to say, there is moisture under or behind the paint layer When the water evaporates into vapor after the sun exposure, the paint will be blistered The second situation is that there is no water in the bubble, which may be the crack of wood grain There is a small amount of air in the bubble When the sun blows, the air expands and the paint skin bulges [solution] in view of the former situation with water, the bubbling paint can be removed with hot air spray gun, the wood can be dried naturally, then the primer can be applied, and finally the whole repair surface can be repainted In the case of no water in the latter, first scrape off the blistered paint skin, then fill the cracks with resin filler, paint again, or without filler, after scraping off the paint skin, directly apply microporous paint [the third crime] cracks appear on the surface of the paint Most of the reasons are due to the use of incompatible paint The coefficient of expansion of the upper and lower paint is different [solution] in most cases, chemical paint remover or hot air spray gun shall be used to remove the paint and then paint again If the fracture range is not large, at this time, it can be moistened with sand grinding block or dry and wet sandpaper to remove the broken paint After the surface is polished smooth, apply putty, brush primer and paint again [the fourth crime] there are many reasons for stains on the paint surface For example: the water in the emulsion paint dissolves the substance on the wall and rusts the paint surface, the wall surface rubbed with steel wool will produce rust spots, and the leakage of concealed pipes in the wall will produce stains, etc [solution] in order to prevent stains, a layer of primer containing aluminum powder can be applied first If there are stains, the latex paint at the spots can be removed first, and then the primer containing aluminum powder can be applied again [Fifth crime] the reason for the tarnish is that the primer is not applied, or the primer and inner layer paint are directly applied with varnish before they are dry, resulting in the varnish being absorbed by wood and tarnish The poor quality of varnish is also a reason [solution] grind off the old paint with dry and wet sandpaper, brush off the dust, wipe the surface with a clean and wet cloth, and then brush the paint again after it is completely dry Special attention should be paid to the fact that when the paint is applied in a low temperature environment, the paint film may lose luster after drying [the sixth crime] the dark spots on the surface of the painted wood may be caused by the fact that the knots are not sealed before painting, and the resin seeps out of the knots when the knots are heated by the sun [solution] at this time, you can use a scraper to scrape off the paint, and then use fine sandpaper to polish until the wood joint is exposed, seal the wood joint with the sealing paint, and then paint again after it is completely dry [seventh sin] the wrinkle of the paint film is usually caused by painting the second time before the first time is dry At this time, the solvent in the lower paint will affect the upper paint film, making it wrinkle [solution] in this case, chemical mercury remover or heating method can be used to remove wrinkled paint film and repaint Remember, you must wait for the first coat to dry out before you apply the second coat [eighth crime] the rough surface of the newly painted paint is usually caused by the unclean brush or the pollution of the surrounding environment It may also be that the paint is mixed with paint skin, which has not been precipitated and filtered before use, or the paint has been stained with dust when it is not dry [solution] in order to prevent the above problems, clean paint brush and paint barrel must be used Before using the old paint, be sure to filter it with paint filter paper or clean nylon stockings In addition, the painted surface should be covered with a cover or cardboard when the paint is not dry to prevent dust If the paint surface is rough, after it is completely dry, polish it with dry and wet sandpaper, wipe it clean, and then brush the paint again Pay special attention to that the paint brush must be clean 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,
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