Epoxy floor paint brushing refers to the artificial use of paint brush dipping paint on the ground for painting method. Its advantages are: simple tools, simple construction, easy to master, flexibility, strong applicability, saving paint; for the corner, groove, machine equipment base and other special positions and narrow areas, other construction methods are difficult to paint parts, often using manual brushing method construction. Before large area painting, the general position should be painted 1 to 2 times, and the width should be extended over 30 cm to facilitate lapping in large area construction. Brushing will not form (paint fog), less environmental pollution to construction, high utilization rate of paint and less waste. The shortcomings of brushing are: manual operation, low production efficiency and high labor intensity. For coatings with fast drying and poor leveling, brushing is easy to leave brush marks and uneven film thickness, which affects the smoothness and decorative effect of the film. There are many kinds of lacquer brushes. The main materials of brush head are wool, horsetail, wolf hair, human hair, brown silk and synthetic fibers. Hard brushes or nylon fibers are mainly used in floor painting construction, which should meet the requirements of QB1103 standard. When choosing a paint brush, it is required that the front end of the brush head should be neat, the brush head should feel soft, no hair breaking and pouring, no hair falling, and the brush should be switched after dipping in solvent, and the brush head should not be separated as a high-quality paint brush.
The quality of brushing depends mainly on the actual experience and proficiency of operators. Before brushing, the paint components must be fully stirred uniformly, accurately formulated and stirred uniformly in proportion, and impurity particles must be removed by filter. Brushing requires a wide range of paint viscosity, generally 20 to 50 s is appropriate, with special diluent adjustment. The requirements of brushing the ground are: no flow, no wrinkle, no leakage and no brush marks.
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