What are the commonly used anti-corrosion coatings?
A. Powder coating, which is a new type of coating without solvent and fused into film by powder. Epoxy powder coating is commonly used in anti-corrosion engineering. Compared with the traditional solvent-based anticorrosive coating, it has the advantages of no solvent pollution, convenient coating, rapid curing, excellent performance and so on. It has been widely used in chemical industry and oil pipeline anticorrosion abroad since the 1960s. With the development of chemical industry and petrochemical industry, the anticorrosion requirement of pipe, especially buried pipe, is higher and higher, and epoxy powder coating has been paid more and more attention.
B. Zinc rich coating, it is a kind of coating containing a large amount of magnesium powder, its zinc powder content between 85-95%, coating thickness of only 100 microns, low cost, excellent performance.
C. Fluorinated coating, such as the United States GSC-CS system is a new type of fluorinated resin coating, three times the life of the general coating, resistant to a variety of chemical media, the use of temperature of 260℃, as containers, tanks, stirring equipment and auxiliary equipment surface coating.
D. Flake coating, composed of glass phosphorus sheet and corrosion resistant thermosetting resin, with superior anticorrosion and permeability. Such as glass flake polyester and vinyl coating used in flue gas desulfurization device abroad, the effect is good, but also can be used for equipment joint sealing materials. The Japanese patent describes an epoxy resin coating containing flake stainless steel powder, which is applied to metal surfaces and has a durability of up to three years, superior to other coatings.
E. Conductive coating, some equipment should not only anti-corrosion and anti-static, such as gasoline tank. The RESEARCH OF CONDUCTIVE coatings abroad is very active, many companies in Japan and the United States produce this kind of coatings, the main direction of conductive coatings research is to develop high conductivity, low cost of new conductive filler, in order to reduce the cost.
Application of anti-corrosion coating
The application of anti-corrosion coating is very wide, in order to improve its service life and application scope, the research and application of coating abroad are mainly two aspects: materials and construction methods. According to statistics, 75% of the corrosion damage of coating is caused by improper treatment of substrate. Therefore, it is equally important to research and develop new materials and strengthen construction quality management. According TO Japanese investigation, IN the existing coating, epoxy polyurethane coating, zinc rich coating, coal tar enamel, as long as the basic treatment is qualified, strictly according to the requirements of the organization construction, the use of the effect is very ideal.
Anti-corrosion steel pipes are often used in the fields of petrochemical water conservancy and water treatment. In the field of anti-corrosion construction of steel pipes, Cangzhou Shenlong Pipe is a professional manufacturer. We have epoxy anti-corrosion coating, FBE anti-corrosion coating, 3PE anti-corrosion coating, etc.
