Common knowledge of coating: analysis of the problem of raw material addition and mixing speed in the production of emulsion paint

Core tip: in recent years, the production formula and process flow of latex paint have been very mature, and no major modification is needed But the details need to be improved Here is a summary of the new paint mesh: the process of adding raw materials in the production of latex paint and the control of mixer speed 1 The following table shows the order of adding raw materials 1 water 2 dispersant 3 defoamer (1/2) 4 wetting agent 5 glycol or propylene glycol 6 titanium white pigment 7 hydroxyethyl cellulose (first added part, remaining to thickening when added) 9 leveling agent 10 film assistant, 11 emulsion 11 Shenyang steel structure fireproof coating construction expert punde Building Fire Engineering Co., Ltd Recommended introduction: since its establishment, Shenyang punde Construction Fire Engineering Co., Ltd has cultivated a group of professional construction teams with excellent equipment, rich experience and serious responsibility with advanced and scientific management methods and strict engineering quality assurance and after-sales service system It has undertaken a number of fire system installation projects, which has been praised by customers Every idea and special requirement of you will be fully considered by us and fully realized in the construction technology, which will become the cornerstone of our successful long-term development We are looking forward to your invitation, to provide you with quality services and high-quality technical support! All construction coatings have passed ISO9001 Paint Home News: in recent years, the production formula and production process of latex paint have been very mature, no major changes are required But the details need to be improved Here is a summary of the new paint mesh: the process of adding raw materials in the production of latex paint and the control of mixer speed 1 The following table shows the order of adding raw materials: 1 Water; 2 Dispersant; 3 Defoamer (1 / 2); 4 Wetting agent; 5 Glycol or propylene glycol; 6 Titanium dioxide; 7 Pigment; 8 Hydroxyethyl cellulose, The remaining addition to thickening is added) 9 leveling agent 10 film forming agent 11 emulsion 12 defoamer (1/2) 13 bactericide 14.AMP-95 15 residual hydroxyethyl cellulose 16 associate thickening agent 17 alkali swelling thickener 2, mixer speed control When the dispersant, defoamer and wetting agent are added to the water, they rotate at low speed (at a speed of 300 R / min), when the raw material is added from 5 to 8, they rotate at high speed (at a speed of 1200 R / min-1400 R / min), and the rotation time is maintained for 0.5h-1h The above two steps are collectively referred to as the pulping process The next step is the grinding process, the main purpose of which is to control the fineness Adding raw material 9-17 is the process of paint mixing, rotating at low speed (150-200r / min) for 0.5h-1h Finally, filter, measure, pack and store 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,