Coating technology: construction method of pearlescent paint

Core tip: scope of application The process is applicable to the construction of pearlescent paint on the indoor and outdoor bases such as cement mortar, mixed mortar, plastering gypsum, asbestos cement board, concrete board, gypsum board, wood plywood, fiberboard, paint coating, etc Construction preparation A Material preparation a Putty: the finished putty conforming to JG / T 3049 putty for building interior should be used The putty prepared on site shall be solid and firm, and shall not be powdered, peeled or cracked b Wood base sealing coating: alkyd varnish, alkyd diluent c Primer: water based or solvent based coatings, and Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Home of coatings: scope of application this process is applicable to the construction of pearlescent paint on indoor and outdoor bases such as cement mortar, mixed mortar, plastering gypsum, asbestos cement board, concrete board, gypsum board, wood plywood, fiberboard, paint coating, etc Construction preparation A material preparation A putty: the finished putty conforming to JG / T 3049 putty for interior use of buildings should be used The putty prepared on site shall be solid and firm, and shall not be powdered, peeled or cracked b Wood base sealing coating: alkyd varnish, alkyd diluent c Primer: water-based or solvent based coating, with good compatibility with surface coating D surface coating: should meet the requirements of GB/T 9756 standard "synthetic resin emulsion interior wall coating" B Tools and supplies preparation putty knife, sandpaper, putty scraper, putty pallet, roller brush, typesetting, paint brush, portable electric mixer, filter screen, plastic bucket, leveling board, steel tape, powder coating, film tape, cover board, herringbone ladder, springboard, plastic protective goggles, mask, gloves, work clothes, rubber shoes C Technical preparation a the base course shall be flat, clean, free of floating sand and shell The moisture content of concrete and plastering surface shall be less than 10%, and the pH value shall be less than 9 Generally, the newly plastered base course should be dried for 10 days in summer and more than 20 days in winter under the condition of good ventilation The base course that has not passed the inspection shall not be constructed b When the sample construction area is large, the sample room shall be made according to the design requirements, and shall be used as the acceptance basis after being approved by the design and construction unit c The doors, windows, lamps, electrical sockets and the ground shall be covered to avoid being polluted by the paint during the construction d The construction team shall have technical director, the main operators shall be trained in the construction technology of this process, and the qualified can take the post, and the auxiliary workers shall be guided by special personnel Process procedure the coating construction shall be carried out after the installation of indoor doors and windows and lamps Make the ceiling first, then the wall, and finally the color separation line Construction operation method a the base treatment shall completely eliminate the powdered layer and ash deposition on the wall, and repeatedly wipe the floating end with a damp cloth In case of external wall construction, the dust can be washed repeatedly with high-pressure water For the oil stain anti release agent, first remove it with neutral detergent, and then thoroughly clean the residue of detergent with clean water, but the construction can only be carried out after the water is washed and completely dried If it is an old wall, the old paint must be completely removed first If necessary, the old paint can be removed with mechanical tools such as electric brush, and then the dust and floating debris can be removed The finished and semi-finished products of the door, window frame, glass and other parts that do not need to be constructed shall be protected before construction to prevent pollution B Brush the wall sealing primer with the matching water-based wall sealing primer, and mix it thoroughly and evenly first Then evenly brush (R can be sprayed if the work quantity is large) once The coating after brushing shall be free of defects such as missing brush, exposed bottom, etc Dry for 10 hours after brushing If the walls are loose and absorbent, they can be evenly coated with roller for one to two times on the bottom of the cleaned base (acrylic emulsion or water soluble building glue with 3~5 times water dilution) C The wooden base shall be sealed on the wooden base, and the alkyd varnish diluent (varnish: diluent = 3-4:1) shall be evenly painted once with paint, and dried for 1-2 days D The putty shall be applied with the matching putty of pearlescent latex paint After the putty is evenly mixed, the local defects shall be scraped and leveled first, polished after drying, and the powder ash shall be cleaned Fully scrape putty twice: for the first time, the rubber scraper shall be used for full scraping, and the horizontal scraping shall be flat, uniform, smooth, dense and flat, and the line angle and edge shall be neat Scrape as thin as possible without missing, and joints shall not be left with tenon After the first putty is dry, polish it with coarse sandpaper Pay attention to the balance of operation, protect the edges and corners, and clean with a brown broom after grinding; the second full puttying method is the same as the first, but the direction of puttying is perpendicular to the front puttying Then use the coarse sandpaper to polish and level, otherwise the third and fourth times must be carried out, and finally use the fine sandpaper to polish and level E The pearlescent emulsion paint shall be evenly mixed with this color pearlescent paint, and then brush, roll, air spray or high-pressure airless spray shall be applied twice according to different tools Dry for 2 hours after the first coating and more than 10 hours after the second coating Precautions: A before using the coating, check the label, mix it carefully and evenly, and cover it tightly after using B The storage and construction of the coating shall meet the air temperature conditions specified in the product specification, which shall generally be above 5 ℃ If the coating is frozen during storage and transportation, it shall be placed in a room with higher temperature to thaw naturally, and it shall not be baked with fire The unfrozen coating can be used only after it is confirmed that there is no qualitative change C The color matching of the coating should be completed by the manufacturer or distributor to ensure the consistency of the color of the batch of coating If color mixing is required at the construction site, the color paste provided by the manufacturer or designated brand and place of origin must be used According to the use requirements and proportion, the color paste shall be allocated by special personnel D Some polyurethane contains more free toluene diisocyanate, which will lead to yellowing of emulsion paint in the process of coating evaporation Polyurethane and emulsion paint shall be avoided to be applied at the same time, and it is better to brush emulsion paint after polyurethane paint is completely dry E During the construction, the paint shall not contact the skin, and shall be washed with clear water in time after contact After the coating is dry, it shall not be soaked for a long time before the handover to avoid quality accidents G the brushing tools shall be cleaned and kept properly after use H The remaining coating should be stored in a cool and dry place with a shelf life of 3-6 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,