What are the requirements for the construction process of water-based barrier coating Emulsions?
Publish Time: 2024-09-30
Water-based barrier coating Emulsions are widely used in many fields due to their environmental protection and safety characteristics, and their construction process has specific requirements.
First of all, surface treatment before construction is crucial. The surface of the coated substrate should be clean, dry, free of oil, dust and other impurities. For metal surfaces, rust removal, polishing and other treatments may be required to improve the adhesion of the emulsion. For wood surfaces, ensure their flatness and sandpaper polishing if necessary. Improper surface treatment will cause the emulsion to fail to adhere well, affecting the barrier effect and service life.
In the stirring stage, water-based barrier coating Emulsions should be fully stirred to avoid precipitation or stratification. Electric stirrers can be used for stirring to ensure that the components of the emulsion are evenly distributed. At the same time, according to the construction environment and requirements, add an appropriate amount of water for dilution according to the proportion in the product manual, but do not over-dilute to avoid reducing the performance of the coating.
The construction methods usually include brushing, rolling and spraying. Brushing is suitable for small areas or surfaces with complex shapes. It requires good brush quality and uniform bristles to avoid brush marks. Rolling is more efficient and suitable for flat surfaces with larger areas, but attention should be paid to the uniformity of rolling. Spraying can achieve fast and uniform coverage, but attention should be paid to the pressure and angle of the spray gun to avoid sagging or leaking.
The construction environment also has an important impact on the construction of Water based barrier coating Emulsions. The construction temperature should be within an appropriate range, generally between 5℃ and 35℃. Too low a temperature will affect the drying speed and performance of the emulsion, while too high a temperature may cause the emulsion to dry too quickly and cause problems such as bubbling. Humidity should also be controlled within a certain range. Too high a humidity may affect the drying and adhesion of the emulsion.
Maintenance after construction should also not be ignored. Before the coating is completely dry, contact and collision should be avoided to prevent damage to the coating. Depending on different environmental conditions, the maintenance time may vary, generally taking several hours to several days.
In short, the construction process of Water based barrier coating Emulsions has strict requirements. From surface treatment, mixing, selection of construction methods to control of construction environment and maintenance, every link needs to be taken seriously to ensure that the coating can exert the best barrier performance and service life.
