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    Home > Coatings News > Paints and Coatings Market > Construction materials: the correct construction technology method of interior wall coating

    Construction materials: the correct construction technology method of interior wall coating

    • Last Update: 2021-01-24
    • Source: Internet
    • Author: User
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    China Coatings Network
    News:
    interior wall coatings
    in the country's
    a building coatings
    accounted for about 60% of the total use of the total, it is a large number of wide-ranging building decoration materials. The inner wall
    coatings
    varieties on the market are synthetic resin emulsion inner wall coatings (commonly known as
    latex paint
    ), water-soluble interior wall coatings, polyethylene alcohol and water glass as the main
    film-forming substances
    , including a variety of modified economical coatings, colorful inner wall coatings including water bag oil type and water bag water type both. In addition, there are fibrous
    , imitation porcelain
    , suede coatings and so on.
    coating finish in the process of use, especially after a long period of time, the finish will produce some common diseases, damage the overall effect of the finish, serious will also bring a lot of trouble to the lives of residents. Therefore, it is very important to find out the common diseases and causes of the decoration, only in this way can we effectively take the corresponding measures of governance.
    (1) the quality of the coating itself. If the paint itself has a floating color. This is due to the use of pigment density difference in the paint is too large, resulting in a small density of pigment particles floating on it, dense particles in the lower part of the accumulation, resulting in color separation. Although the construction is fully stirred, but in the brushing and drying process, the coating is still prone to color differences, paint dispersion in the paint is not good or uneven may also cause color flowering. Pigment dispersion is not good or several pigment dispersion is not uniform, in the brush or roller floating construction, in the direction of brush, roller easy to produce stripe color difference.
    (2) improper construction caused uneven brushing, construction technology is not skilled will also cause different colors. Pigment and base material ratio is not appropriate, pigment, filler too much, resin composition is too little, uneven color display. The base alkaline is too large, and the pigments used in fillers that are resistant to alkali are also prone to uneven color.
    (1) shedding itself into a film is not good, such as latex coating construction temperature is too low, emulsion itself can not form a continuous coating film caused by cracking, water and moisture will fall off.
    (2) coating parts, pigment, filler content is too high, resin content is too low, resulting in poor adhesion of the coating film.
    (3) the grass-roots loose has floating dust, oil pollution and other unclean things, coating film and grass-roots adhesion is not good.
    (4) grass-roots level treatment, the use of putty strength is low, easy to powder, especially in the kitchen bathroom and other places with high humidity cellulose white putty, putty strength is low, water resistance is very poor, easy to expand in water, resulting in foaming, shedding.
    (5) grass is too smooth, easy to cause the coating film adhesion is not good.
    (6) construction is not proper, the first coating is not completely dry, that is, the application of the second coating. Due to the different internal and external drying speed, resulting in the coating film cracking.
    1. In order to overcome the coating film hair flowers, uneven tone can be prevented by the following measures:
    (1) the selection of suitable paint dispersants, it is best to match organic and inorganic dispersants, so that pigments in a good stable dispersion state.
    (2) appropriate to improve the viscosity of latex coatings, if the viscosity is too low, floating phenomenon is serious, when the viscosity is high, is the density difference between the pigments will also reduce the tendency to layer.
    (3) before the construction to fully stir the paint, so that it is uniform, no precipitation and floating color, construction should not be arbitrarily diluted with water.
    (4) construction coating must be uniform, coating film should not be too thick, the thicker the coating film is more likely to produce floating color, flowering phenomenon.
    (5) in order to make the base absorption paint uniform, it is best to apply a closed primer.
    (1) in different construction temperatures, should take different coatings, latex coatings are best in 5 degrees C or more than 10 degrees C construction, film additives to be appropriate, the addition should be appropriate to ensure that the emulsion forms a continuous coating film, do not crack. Colorful coatings should be constructed in an environment of more than 5 degrees C and humidity of no more than 85%. If the construction is high humidity in rainy days, the coating film is easy to whiten and not easy to produce continuous coating film, adhesion is also reduced.
    (2) according to different use occasions and requirements, choose the right face, kirby. The amount of paint and fillers cannot be increased too much in order to reduce costs.
    (3) grass-roots should be handled, the loose layer will be shoveled off, the floating dust, oil pollution clean up.
    (4) according to the specific conditions of the wall and the variety of paint used, choose good bonding strength putty, especially in the kitchen, bathroom conditions are more demanding places, should choose water-resistant putty, putty layer can not be too thick, usually to find flat wall body, must wait for putty drying and then apply paint.
    (5) an overly smooth surface should be treated with an interface agent or other measures to enhance the adhesion of the coating and reduce shedding.
    (6) apply different coatings, it is best to take back cover measures.
    ordinary putty construction method: paint construction, need to use putty to flatten the wall, generally use 821 gypsum putty, can also use cellulose white putty or 107 glue putty. The latter has been used less often, but the construction methods are mostly the same. First of all, the grass-roots dirt, oil traces removed, brush a diluted 107 glue, and so dry before applying putty. Stir the putty powder with water and use it well. Usually after the batch scraping two lanes are completed, the polishing is smooth. The plaster putty is used up within the specified time.
    method of water-resistant putty: the grass-roots surface requires solid, clean, no oil pollution. Before batching putty, paint a back cover liquid at the base for backing treatment. Usually batch scraping two, do not need to scrape too thick, and strive for uniform. Water-resistant putty generally does not need special polishing, if there is a local need to repair can be gently polished, after grinding the surface dust in time to remove clean. Stainless steel or rubber scrapers should be used to avoid rust.
    in the past, interior wall paint construction often did not require closed primers. However, from the actual use of the process and foreign advanced experience, the use of closed primer to ensure the quality of the process has a great role.
    , latex coating occupies a large proportion of the inner wall paint, usually using roller coating, brush coating construction methods. In addition, spraying, smearing, scraping and other construction methods can be taken. It can be used alone or mixed. Roller coating construction operation is simple, non-professional construction personnel can operate on their own. Different kinds of rollers can be used to paint different patterns. When applying the roller, pay attention to the amount of suction on the wool roller. Can not be too much can not be too little, pulp must be appropriate and uniform. When rollers are applied to the wall, they are constructed in a bottom-up way so that they do not cause flow. When the paint of the wool roller is used up by 50%, it should be coated and then rolled, which is conducive to long-term construction operation.
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