Coating formula: composition of waterborne epoxy polyester coating

Core tips: the water-based epoxy polyester coating has high adaptability, which adjusts the adaptability of the viscosity and solid content of the paint liquid to the coating environment and different coated workpieces The thixotropic technology is used to realize the balance between the construction viscosity of the coating and the appearance state of the coating film When the hardness of the coating film is high, it still has the required flexibility, impact resistance and adhesion The effective instructor density of the coating film is properly increased 。 The coating is not only resistant to salt spray and damp heat, but also to cold and hot circulation, and has outstanding corrosion resistance (1) Base material composition Water based epoxy polyester resin formula ingredient / kg ingredient / kg polyol 236.3 ring opening agent 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: the water-based epoxy polyester coating has high adaptability The adaptability of the viscosity and solid content of the paint liquid to the coating environment and different coated workpieces is adjusted The thixotropic technology is used to realize the viscosity and coating of the coating construction The balance between appearance and state; the flexibility, impact resistance and adhesion of the coating when the hardness of the coating is high; the effective density of the coating is increased appropriately The coating is not only resistant to salt spray and damp heat, but also to cold and hot circulation, and has outstanding corrosion resistance (1) The base material consists of water-based epoxy polyester resin formula component material / kg component material / kg polyol 236.3 ring opening agent 66.2 polyacid 301.6 epoxy resin 149.9 xylene 15.4 deionized water 130.5 glycol ether 100.2 operation process: Polyol, polyacid and xylene are added to the reactor, heated and stirred, esterified and dehydrated at 150 ℃ ~ 220 ℃ When the acid value is 10 ~ 50mgkoh / g, epoxy resin, ring opening agent and glycol ether are added to modify the reaction When the viscosity of the reactant is 16 ~ 25s (gaster tube, 25 ℃), it is filtered for standby (2) Among the pigments and fillers available for waterborne coatings are titanium white, iron yellow, strontium calcium yellow, lemon yellow, iron red, cadmium red, phthalocyanine blue, ultramarine, carbon black, precipitated barium sulfate, talcum powder, white carbon black, calcium carbonate, kaolin, iron black and organic bentonite It is worth noting that after adding iron oxide, zinc chromate, zinc phosphate, barium chromate and zinc borate into the water emulsified epoxy coating, the primer made of metal materials will achieve satisfactory results (3) Amino resin, thermosetting phenolic resin, thermosetting acrylic resin, hydroxypolyester and isocyanate can be used as crosslinking agents (4) P-toluenesulfonic acid and byk450 are often used as curing accelerators Organic bentonite, kaolin, gas-phase SiO2, hydrogenated castor oil, etc are used as thixotropic agents to prevent deposition during storage and sagging during construction (5) Coating preparation ① formulation and content of waterborne epoxy polyester coating /% waterborne epoxy polyester resin 35.8 thixotropic agent 5.5 amino resin 16.4 fiber dissolving agent 7.8 mixed pigment 7.0 filler 4.3 curing accelerator 2.4 distilled water 20.8 ② operation process: Add water-based epoxy polyester, fiber dissolving agent, distilled water, mixed pigment, filler and curing accelerator into the paint mixing tank in turn, and mix them evenly; add thixotropic agent and amino resin under mixing; after all materials are fully mixed, grind them to a fineness of no more than 30 μ m with a mirror grinder, filter and pack them (6) The solid content of the working solution is 45% ~ 55%, the working temperature is 20 ~ 35 ℃, and the viscosity is 19 ~ 26S Water in the tank: the cosolvent is 1.0:1.3 (mass ratio), and the water content is about 10% Level twice after dip coating The paint liquid keeps circulating in the paint tank, reaching 3-4 times / h (the paint formula in this paper is for reference only) paint home is focused on the news and information of coating, diatom mud, paint coating, coating process, fire retardant coating, and coating, diatom mud, paint coating, coating process, decoration knowledge and decoration effect map of fire retardant coating,