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    Home > Coatings News > Paints and Coatings Market > Coating process: surface treatment for construction of exterior wall with water-clad paint

    Coating process: surface treatment for construction of exterior wall with water-clad paint

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tip: the surface treatment before the coating of exterior wall coating is the key to the coating The firmness and durability of the coating are largely maintained by good surface treatment The surface before the coating of exterior wall coating should meet the following requirements: firm, thoroughly dry, neutral or slightly alkaline, clean 1 New and unpainted wall finishes: ① Check whether the wall has cracks, holes and the roughness of the wall Depending on the situation, 1:3 ~ 4 fine cement mortar can be used for filling and troweling When the wall is too rough, the paint consumption will increase exponentially ② Check if there is water pipe on the wall 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 Coating home news: the surface treatment before the coating of exterior wall coating is the key to the coating The firmness and durability of the coating are largely maintained by good surface treatment The surface before the coating of exterior wall coating should meet the following requirements: firm, thoroughly dry, neutral or slightly alkaline, clean 1 New and unpainted wall surface treatment: ① check the wall for cracks, holes and wall roughness Depending on the situation, 1:3 ~ 4 fine cement mortar can be used to fill and level the wall When the wall is too rough, the paint consumption will increase exponentially ② Check if there is any trace of water pipe leakage on the wall, and if there is, remove the source of water leakage ③ Check whether the wall after filling and troweling is completely dry When the color of the building surface is too deep, it indicates that the water content is too high Before painting, it is better to use a hygrometer to detect (the water content should be less than 8%) The completely dry wall surface should be relatively uniform gray white, and the pH value should not be higher than 10 Generally, the cement wall in summer needs to be cured for more than four weeks, and it should be extended in winter ④ When there are special requirements for decoration flatness, special putty can be used for external wall (thin and flat, the putty layer should not be too thick, otherwise it is easy to crack After scraping, it needs to be watered for several times until the pH value is lower than 10 and the moisture content is lower than 8% (the external wall coating is better not to apply putty layer, which can reduce adhesion, alkalinity, cracking and many other problems.) ⑤ when the wall is highly alkaline and in time for construction progress, the following steps can be taken: A clean the wall with about 5% oxalic acid solution until the pH value is lower than 10; B clean the wall with clear water; C let the dry water content of the wall be lower than 8% 2 Surface treatment of the wall of the external insulation system: ① check whether the external insulation cover glue has loose attachments, grease and pollutants, if any, it should be removed or cleaned ② According to the flatness of the wall covering glue of the external insulation system, the special putty for the external wall should be applied to meet the requirements of the decorative finish Then, curing shall be carried out as required until the pH value is less than 10 and the moisture content is less than 8% 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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