Paint knowledge: seven ways to solve paint problems

Core tip: paint is an important part of interior decoration, which is prone to some thorny problems In fact, as long as you find out the real cause of the problem and apply the right medicine, it is not difficult to have satisfactory results The following is to put forward solutions for the problems that are easy to occur in the paint, so that you can be more handy in the interior decoration Paint peeling may be caused by too smooth surface If the original paint is glossy or powdery (with untreated paste paint), the new paint will not stick firmly on the surface Or it may be rotten wood or rusty metal, or peeling due to poor paint quality A small area of paint peels off, which can Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Paint Home News: paint is an important part of interior decoration, prone to some difficult problems, people are helpless In fact, as long as you find out the real cause of the problem and apply the right medicine, it is not difficult to have satisfactory results The following is to put forward solutions for the problems that are easy to occur in the paint, so that you can be more handy in the interior decoration Paint peeling may be caused by too smooth surface If the original paint is glossy or powdery (with untreated paste paint), the new paint will not stick firmly on the surface Or it may be rotten wood or rusty metal, or peeling due to poor paint quality In case of peeling off of small area of paint, 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 First of all, the paint blisters If there is water coming out, it means that there is moisture under or behind the paint layer After the sun, the water evaporates into steam, and the paint skin will be blistered At this time, first use the hot air gun to remove the foaming paint, let the wood dry naturally, then brush the primer, and finally paint the whole repair surface again If there is no water in the bubble, it may be wood grain cracking There is a small amount of air in the bubble When the air expands in the sun, the paint will bulge In the face of this situation, first scrape off the blistering paint skin, then fill the cracks with resin filler, paint again, or without filler, after scraping off the paint skin, directly apply microporous paint In case of cracks, 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 flow of paint If the paint is applied too thick at one time, it will flow The paint can be brushed with a brush before it is dry If the paint has begun to dry, it should be allowed to dry completely Polish the paint surface with fine sandpaper, brush the surface clean, wipe it with a wet cloth, and then apply the outer layer of paint again, taking care not to brush too thick 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 In order to prevent stains, a layer of primer containing aluminum powder can be brushed first If there are stains, the latex paint at the spots can be removed first After brushing the primer containing aluminum powder, paint again Mildew and discoloration often occur on wet paint surfaces, such as water vapor condensation on glass or metal surfaces, which often produces brownish black stains At this time, fungicide can be used to treat the moldy parts according to the instructions in the manual After the mold is killed, clean the surface, and then paint again The reason for the loss of luster is that the primer is not applied, or the primer and inner layer paint are directly applied with varnish before they are dry As a result, the varnish is absorbed by wood and loses luster The poor quality of varnish is also a reason Use dry and wet sandpaper to grind off the old paint, brush off the dust, clean 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 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 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 The surface of a new paint is rough, usually because the brush is not clean or polluted by 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 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 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 At this time, the paint can be scraped off with a scraper, and then polished with fine sandpaper to expose the wood joint Seal the wood joint with sealing paint, and then paint again after it is completely dry If the paint is not dry, the indoor ventilation is not good or the temperature is too low, the paint will dry slowly This is to open all doors and windows to promote ventilation, or put a heater in the room to increase the room temperature If it still fails to solve the problem, it may be that the painted surface is greasy The paint can be removed by chemical paint remover or heating method, and the surface can be completely wiped clean before repainting Stick the bug on the paint surface and try to remove the bug while the paint is not dry, and then touch up the surface with a little oil with a brush If the paint is starting to dry, wait for the film to harden completely, and then wipe off the bug, so as not to mess up the surface 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,