The performance of the waterborne epoxy floor coating can be changed by adjusting the ratio of {TodayHot}. The general equivalence ratio can be increased or decreased by 20%. The specific equivalence ratio varies depending on the application. Excess epoxy group can prolong the pot-life of water-based epoxy floor coatings, improve the water resistance, chemical resistance, and moisture resistance of the coating, while the excess of amine hydrogen can accelerate the curing of the coating. The gloss, adhesion, wear resistance and solvent resistance are also correspondingly improved. Experts said that the effect of epoxy group and amine hydrogen equivalent ratio on the performance of waterborne epoxy floor coatings is mainly manifested as: amine hydrogen excessive gloss, fast curing, strong adhesion, good wear resistance, good solvent resistance, resistance Good dirt, epoxy acid resistance, good moisture resistance, good alkali resistance, good water resistance, long pot life, good corrosion resistance. To explain the problem emotionally, the expert also specified the formulation examples of waterborne epoxy floor coatings: The waterborne epoxy floor coating consists of low molecular weight liquid epoxy resin (component 1), and waterborne epoxy curing agent paint (components 2) Composition, using water-based epoxy curing agent paint to emulsify low-molecular-weight liquid epoxy resin, with the paint is selected in the curing agent component, which is different from the preparation of conventional solvent epoxy floor coating (in Epoxy resin solution composition). Waterborne Epoxy Floor Coating Reference Formula - Component 1: Epoxy DDR331 is 90-95, co-solvent is 1 to 5; Component 2: Water-based epoxy curing agent GCA01 is 20-25, water is 40-50 The foam inhibitor is 0.1, the titanium dioxide is 5 to 10, the pigment filler is 145 to 175, the waterborne epoxy curing agent GCA01 is 115 to 125, the thickener is 1 to 2, and the defoamer is 0.3 to 0.5. {HotTag}
Water-based epoxy floor coating preparation process, first, the water-based epoxy curing agent GCA01, water and a small amount of foam inhibitor into the barrel, stirring until the water-soluble epoxy curing agent GCA01 uniform; Second, add titanium at medium speed White powder and all kinds of fillers, first high-speed dispersion for 10 minutes and then sanded until the fineness is less than 50um; third, after the filter is slowly added at medium speed waterborne epoxy curing agent GCA01, stirring after mixing for 15 minutes; The thickener was used to adjust the viscosity of the color paint, and the defoamer was added at a low speed and stirred for 5 minutes before being packaged. Experts also said that the construction of water-based epoxy floor coatings must first be ready for construction, including materials: waterborne epoxy floor coating primer, middle coating, topcoat, quartz sand, quartz powder and other related materials; tools: base Grinding tools, vacuum cleaners, batch scrapers, rollers, small mixers, etc.; Construction conditions: Excavate and clean the ground cement mortar (oil and other impurities on the ground must be wiped clean with solvent), the original cement floor requirements hard Flat, can not afford to sand (ground if empty drum, peeling, sand, cracks, etc. must be processed before processing as required), the original ground, such as terrazzo, floor tiles and other smooth ground must first be cut into rough surface, construction site The relative humidity should be less than 85% of the ambient temperature above 10°C.
Waterborne epoxy floor construction steps are divided into 5 steps. Primer: After the concrete substrate has been processed and cleaned, the primer coating (rolling or brushing) can be performed. The roller coating or brushing should be uniform and consistent in thickness. The primer has a certain permeability function and can strengthen the base material. Strength and increase the adhesion of the coating to the substrate; Middle coating: Add the quartz sand and quartz powder into the waterborne epoxy mortar in the prepared water-based epoxy coating (middle coating), and evenly coat it with a guillotine knife. The cloth is used to increase the thickness and the compressive strength of the coating. After the intermediate coating, sand is used to grind the floor, and a putty made of a water-based epoxy coating (middle coat) and quartz powder is used to build a number of channels according to actual requirements. It can reach flat and no holes, no batch knife-cut and sand-grinding. Prepreg: Apply 2 coats of water-based epoxy floor coating with rollers. After completion, the entire floor surface should be lubricated with soft, clean, uniform color and no empty drum. Maintenance: surface drying requires 24 hours, in this period should be closed so as not to affect the surface clean and smooth effect, 3 days before the person, completed maintenance 7 days before the official use (according to 25 °C, open at low temperatures , the time needs to be moderately extended).
Experts concluded that aqueous epoxy floor coatings have comparable performance to solvent-borne epoxy floor coatings and that existing waterborne epoxy floor coatings can be used in the pharmaceutical, food, hospital, textile, chemical, and electronics industries. Floor paintings of factory buildings, office buildings, warehouses and laboratories are especially suitable for floors, basements, underground parking lots and other relatively humid environments on the ground floor. As a green environmental protection product, waterborne epoxy floors must be recognized and widely used by people.
Epoxy and hardeners have a greater impact on water-based flooring
Experts have found that the use ratio of epoxy resin and waterborne epoxy curing agent (represented by the ratio of epoxy group to amine hydrogen equivalent) has a great influence on the performance of waterborne epoxy coatings. For this reason, experts have specifically pointed out the need to pay attention to the material itself and also need to rely on its “standardsâ€.