Coating process: production process of building putty adhesive

Core tips: production process: 1) Add 800 kg water to the reactor, raise the temperature to 30 ~ 50 ℃, add PVA while stirring, and then keep stirring until the temperature rises to about 98 ℃, and keep the constant temperature for more than 30 minutes Then add hydrochloric acid, adjust the pH value to 1.5, stir evenly, and then add the formula amount of formaldehyde once, stir to start the reaction 2) Pay attention to the reaction condition at all times during the mixing process After reaction for about 1 h, white color appears in the reactor, and then gradually becomes thick, floccules appear Observe 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 Coating home news: production process: 1) add 800 kg of water to the reactor, raise the temperature to 30 ~ 50 ℃, add PVA while stirring, and then stir all the time to make the temperature rise to about 98 ℃, and keep the constant temperature for more than 30 minutes Then add hydrochloric acid, adjust the pH value to 1.5, stir evenly, and then add the formula amount of formaldehyde once, stir to start the reaction 2) Always pay attention to the reaction condition during mixing, reaction 1 At about h, the reactor begins to appear white, then gradually becomes thick, and floccules appear Observe the viscosity change in the reactor When the viscosity gradually increases, the water will be separated instantly The viscosity of the reactant is very low at this time, indicating that the reaction is complete At this time, immediately add caustic soda, neutralize hydrochloric acid, adjust the pH value to 6-7, and start to cool down with cooling water Add it after stirring evenly Measured urea 3) Keep the temperature for more than 30 minutes, keep the temperature at 50 ~ 60 ℃, slowly add polyacrylamide thickener under the condition of mixing, then supplement the remaining water, and continue to mix for 30 minutes 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,