Coating technology: construction quality control of elastic building coating

Core tip: in recent years, China's construction coating industry has developed rapidly, the demand for various new construction coatings is growing, and has shown good technical and economic results in practical application Elastic building coating has the function of decoration, protection and improvement of the use environment By controlling the construction link and controlling its quality, it can not only achieve the beautiful effect, but also extend the service life of the base Grass-roots treatment In order to ensure the construction quality of the elastic coating project and make it durable, the surface treatment of the base course is the key The quality of base treatment directly affects the adhesion, service life and installation of the coating 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 Home of coatings news: in recent years, China's construction coating industry has developed rapidly, the demand for all kinds of new construction coatings is growing, and shows good technical and economic effect in practical application Elastic building coating has the function of decoration, protection and improvement of the use environment By controlling the construction link and controlling its quality, it can not only achieve the beautiful effect, but also extend the service life of the base To ensure the construction quality of elastic coating engineering and make it durable, the surface treatment of base course is the key The quality of base treatment directly affects the adhesion, service life and decoration effect of the coating, so this process must be paid attention to before the coating construction Different matrix materials have different requirements and methods of surface treatment Concrete plastering and concrete base treatment The requirements for the concrete and plastering base course are: the surface shall be flat and the internal and external corners shall be dense; the pH value of the base course shall be below 10; the moisture content shall not be greater than 10%; the plastering plane shall be firm and firm, and the sundries and attachments such as oil dirt, dust, splashes and mortar flow marks on the surface shall be completely removed; the protruding part and falling objects on the concrete surface shall be cleaned and leveled The surface pan alkali can be neutralized with 3% oxalic acid aqueous solution, and then rinsed with clean water Hollowing, cracking, peeling and sanding shall be cleaned with blade and wire brush, washed with clean water, and then repaired The old pulp can be washed with water to dissolve the old pulp, and then the old pulp can be scraped off with a blade The treatment of wood base requires that the water content of the wood base shall be no more than 12%; the surface shall be flat and free of dirt such as dust, oil stain, etc.; the cracks, burrs, grease bags on the surface of the base shall be treated, and then the putty shall be used to scrape and polish Grease and glue stains can be cleaned with warm water, soapy water, alkaline water, etc., or wiped off with alcohol, gasoline or other solvents, and then cleaned with clean water The resin can be removed by acetone, alcohol, benzene or carbon tetrachloride, or washed with 4% ~ 5% NaOH aqueous solution In order to prevent the resin in the wood from seeping out, it is advisable to use a layer of shellac paint to seal the part after removing the resin The construction method of elastic coating binding layer (putty layer) elastic coating has higher requirements on putty Whether it is water-soluble or solvent-based, it is required that the putty layer can be firmly combined with the base layer and the coating surface layer The putty material should have good air permeability, high strength, water resistance and alkali resistance The putty layer shall be constructed in three times: the bottom layer is mainly used for preliminary leveling, the first layer shall be scraped and polished with coarse sandpaper The second layer shall be leveled on this basis and polished with fine sandpaper The third course shall be accurately leveled and carefully polished with fine sandpaper There are two more walls with special requirements During the construction of putty layer, the joint shall be cleaned as much as possible, and no joint shall be left When the grinding requirements are high, it shall be carried out before the initial setting of putty layer Whether it is concrete or plastering base course, the internal and external corners of the wall shall be repaired with putty to ensure the organic adhesion between the coating and the base course 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,