Coating process: 910-h type interior wall coating production process

Core tips: 1 Production formula: (1) Formula of base material (oxidized starch glue): Component dosage / kg corn starch 7527% hydrogen peroxide 1596% flake alkali 15 ferrous sulfate 0.05 sodium thiosulfate 5 borax (complexing agent) 0.5 (i.e 5% aqueous solution 10kg) ch-718c viscosity thickener 0.2 water added to 700 (2) Paint formula: Composition and dosage / kg oxidized starch glue 700 light calcium carbonate 264.8 sodium fluoride 5 tributyl phosphate 0.2 paint paste proper amount of water added to 10 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 Production formula: (1) formula of base material (oxidized starch glue): composition dosage / kg corn starch 75 27% hydrogen peroxide 15 96% flake alkali 15 ferrous sulfate 0.05 sodium thiosulfate 5 borax (complexing agent) 0.5 (i.e 5% aqueous solution 10kg) ch-718c tackifier 0.2 water added to 700 (2) coating formula: composition dosage / kg oxidized starch glue 700 light calcium carbonate 264.8 sodium fluoride 5 tributyl phosphate 0.2 paint color paste with appropriate amount of water added to 1000 2 Production equipment: one set of paint mixer, with cylinder capacity of 500-1500l, mixer speed of 80-600r / min, and mixer motor power of 5-7.5kw Two additional pull tanks with capacity of 500L and 1000L respectively 3 Production process: (1) preparation of oxidized glue: ① preparation of colloidal solution of ch-718c type tackifier: take 5kg of water and add it into a plastic bucket, stir it while adding ch-718c type tackifier, stir it fully after adding, and make it dissolve into colloidal solution for standby ② Preparation of caustic soda water solution: take 35kg of water, add it to a pull cylinder, add 15kg of caustic soda (flake alkali) while stirring, and fully mix for 10min after adding, so as to make it dissolve into 30% alkaline water solution for standby ③ Preparation of borax aqueous solution: Borax aqueous solution is generally used in the field, because borax is easy to dissolve in hot water above 80 ℃, and borax will crystallize out when the temperature is reduced The specific method is to add 9.5kg of hot water above 80 ℃ to a container, add 0.5kg of borax, stir to make it dissolve completely Then keep it warm for storage ④ Preparation of glue: add the remaining water in the base material formula to the pull cylinder (capacity: 1000L) of the mixer, add ferrous sulfate to the pull cylinder, start the mixer (rotating speed: 120r / min) to make ferrous sulfate dissolve in the water, and then the water turns yellowish Then 75 kg corn starch in the formula was added into the micro yellow water solution and stirred continuously for 5 min to make the starch fully wetted and dispersed After 5 minutes, the dissolved aqueous solution of flake alkali was added to the stirred starch slurry, which gradually turned into a thick glue solution with the stirring slurry After stirring for about 15 minutes, the glue began to flow At this time, the hydrogen peroxide added to the formula is added After stirring for about 10min, the glue is oxidized and thinned This is a big increase in foam It can be properly added three drops of phosphoric acid butyl ester to eliminate foam With the increase of stirring time, the oxidation is deepened If there is a viscometer (coated with 4 #Cup) add 5kg of sodium thiosulfate, the oxidation termination agent, when the viscosity reaches 40-60s, and then add the borax solution (concentration: 5%) dissolved in advance after stirring evenly, and fully mix to make the glue complexed After stirring for 10min, add the dissolved ch-718c tackifier solution After stirring evenly, stop the machine, and leave the discharging and glue storage tank (barrel) for 24 hours H can be used in coating production (2) Preparation of coating: ① add 20kg tap water into a plastic bucket, add sodium fluoride while stirring, and stir after adding, so that it dissolves completely and is ready for use ② Add the oxidized starch glue specified in the formula to the pull cylinder (capacity 1500L) of the paint mixer, start the mixer (rotation speed of the mixer is 300-600r / min), mix the glue, add 25kg sodium fluoride aqueous solution and paint color paste, and mix well Then, the remaining tap water in the formula is used to wash the empty bucket that has been finished, and then the washing water is returned to the agitated cylinder for further mixing ③ The light calcium carbonate in the paint formula is gradually added, and after adding, it is continuously stirred for about 50min to make the paint very soft without dry powder Stop foaming before adding defoamer three butyl phosphate to eliminate foam If there is a grinder, the coating can be fed into the grinder to grind to less than 100 μ m to obtain the finished product If there is no grinder, 120 mesh screen can be used for manual scrubbing and forced filtration with a brush 4 Production experience: (1) the oxidized starch glue in this product can be prepared more at a time and stored for use, because it can be used for a month under the sealed condition (2) The storage period of the coating is three months, but there will be precipitation stratification When using, the coating can be stirred evenly before painting (3) This product can be used to make other pigment coatings, just add the corresponding color paste (4) This product can be brushed twice (5) The ferrous sulfate in this formula can be reduced to increase whiteness (6) The fineness of the coating must be guaranteed The properties of the fine coating are not good, and even the powder may be removed by dry wiping 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,