In the construction of epoxy floor paint, high pressure airless spraying can achieve better appearance than roller coating. Let's take a look at the matters needing attention in the construction of epoxy floor paint for high pressure airless spraying. 1. Spraying pressure and flow. For a certain type of airless spraying equipment, the relationship between spraying pressure and flow rate is that the flow rate increases and the spraying pressure decreases when the coating privacy is unchanged and the input compressed air pressure is constant. When the pressure of compressed air is increased, the spray pressure and flow rate will increase correspondingly.
2. Viscosity and spray pressure of epoxy floor coatings
Different types of coatings have different viscosity, especially high solid content coatings, such as solvent-free high solid content epoxy resin coatings. The higher the viscosity, the greater the spraying pressure needed during construction. The pressure ratio of low viscosity coatings is 23:1 and 32:1, while the pressure ratio of high viscosity coatings is about 45:1. But can not blindly increase the pressure of spraying, spraying high viscosity paint, should also consider the replacement of large caliber nozzle.
3. Nozzle selection
Before high-pressure airless spraying, nozzles with certain aperture and shape should be selected according to the coatings and objects used. The size of the nozzle determines the size of the flow, and the shape of the nozzle determines the amplitude of the spray. For those paints with higher size and larger construction area, you should choose larger nozzle.
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