Fire retardant coating is a kind of fireproof material. In general, when people apply fire retardant coatings, they will use the brush coating method, roller coating method, blade coating method, and spraying method to apply and apply fireproof coatings. In order to get people to effortless brush fire retardant coating time-saving, followed by small series to introduce the advantages and disadvantages of anti-fire paint coating method.
Squeegee method: Use metal or non-metal scrape dao, such as hard rubber sheet, glass steel scrape dao, horn scrape dao, etc. by hand scraping, used to smear a variety of high-density fire-retardant coating defects are low production efficiency, labor intensity .
Brushing method: The brushing method is suitable for painting objects of any shape. Most fire retardant coatings can be applied by this method. The brushing method easily penetrates into the pores of the metal surface, thereby enhancing the adhesion to the metal surface. Disadvantages Sometimes the surface of the coating is left with a brush mark, which affects the decorative properties of the coating.
Spraying method: The construction method of atomizing the paint by using compressed air and spray gun. It is characterized by uniform coating quality and high production efficiency after spraying. The disadvantage is that a part of the paint is lost, and at the same time, the physical health of the operator is affected due to the large amount of solvent evaporation. It is worth noting to the construction personnel that the viscosity of the paint is high and the air pressure is high. The nozzle should be selected with a large diameter.
Roller coating method: Roller coating is suitable for large-area construction, and the efficiency is higher than that of brush coating. However, it is difficult to apply special shape objects, and it is difficult to apply corners and corners. Changes in roll coating parameters and external conditions can cause roll coating process instability, resulting in uneven coating and cause streak-like defects. Severe paint leakage may also occur. In addition, solid materials such as metallic pigments and resins that are different from paint compositions are difficult to infiltrate, which is also a problem in roll coating apparatuses.
Squeegee method: Use metal or non-metal scrape dao, such as hard rubber sheet, glass steel scrape dao, horn scrape dao, etc. by hand scraping, used to smear a variety of high-density fire-retardant coating defects are low production efficiency, labor intensity .
Brushing method: The brushing method is suitable for painting objects of any shape. Most fire retardant coatings can be applied by this method. The brushing method easily penetrates into the pores of the metal surface, thereby enhancing the adhesion to the metal surface. Disadvantages Sometimes the surface of the coating is left with a brush mark, which affects the decorative properties of the coating.
Spraying method: The construction method of atomizing the paint by using compressed air and spray gun. It is characterized by uniform coating quality and high production efficiency after spraying. The disadvantage is that a part of the paint is lost, and at the same time, the physical health of the operator is affected due to the large amount of solvent evaporation. It is worth noting to the construction personnel that the viscosity of the paint is high and the air pressure is high. The nozzle should be selected with a large diameter.
Roller coating method: Roller coating is suitable for large-area construction, and the efficiency is higher than that of brush coating. However, it is difficult to apply special shape objects, and it is difficult to apply corners and corners. Changes in roll coating parameters and external conditions can cause roll coating process instability, resulting in uneven coating and cause streak-like defects. Severe paint leakage may also occur. In addition, solid materials such as metallic pigments and resins that are different from paint compositions are difficult to infiltrate, which is also a problem in roll coating apparatuses.
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