Analysis of the principle of acid-base corrosion of heavy anti-corrosion coating protective materials

China Coatings Online News Information: The process by which materials lose their inherent properties due to harmful chemical, electrochemical, or physical changes due to their surroundings. Anticorrosive coating engineers point out that material corrosion occurs on the surface of the material. It is divided into chemical corrosion and electrochemical corrosion according to the way of corrosion reaction. The former occurs in a non-ion conductor medium and the latter in a medium with ion conductivity, so the corrosion rate can be changed by changing the electrode potential of the material. According to the characteristics of material destruction is divided into uniform corrosion, local corrosion and selective corrosion. Uniform corrosion means that there is little difference in the depth of corrosion damage throughout the surface of the material, with no particularly severe parts and no particularly minor parts. Local corrosion is the corrosion damage of the surface of the material occurred in a certain area, mainly pores, gap corrosion, intercrystalline corrosion and so on. Selective corrosion is the selective dissolution of the active components of metal materials in corrosive media, caused by electrochemical differences in alloy components of metal materials. According to the corrosion environment is divided into microbial corrosion, atmospheric corrosion, soil corrosion, marine corrosion and high temperature corrosion.
anti-corrosion coatings preferred anti-corrosion coatings, with the development of industrial technology, in the petrochemical, energy, power, metallurgy, aerospace and other fields of corrosion and anti-corrosion problems. To meet the needs of the market, advance research and experimental development of salt-resistant and acid-resistant corrosion anti-corrosion coating technology, anti-corrosion effect is good, become the anti-corrosion industry's bright spot technology, and has salt-resistant acid anti-corrosion coating exclusive patented technology. Acid corrosion in anti-corrosion coating research laboratory refers to corrosion of metal materials in acid solution. Its properties are hydrochemical corrosion, cathode reaction of 2H plus 2e→H2. From the thermodynamic point of view of acid corrosion, increasing the acidity of the solution will accelerate the cathode reaction and increase the corrosion rate, but the corrosion rate is also related to hydrogen over-the-maye. Anti-corrosion laboratory statistics acid corrosion involves inorganic acid, of which sulfuric acid, hydrochloric acid and nitric acid are the most important, organic acids in acetic acid, foric acid-based.
large-scale anti-corrosion coating enterprises, anti-corrosion coating research and development, production, sales, after more than ten years of research and development of inorable polymerization technology has been in the forefront of the world, by the company's research and development can withstand 2300 degrees C high temperature corrosion ZS-811 high temperature anti-corrosion coatings; High temperature anti-corrosion coating, temperature resistance can reach 1600 degrees C, high temperature antioxidant capacity, high purity and non-volatile, it can withstand strong solvents and mixed solvents long-term immersion; Material flexibility, temperature resistance can reach 1600 degrees C, hydrogen fluoric acid resistance to HFCs ZS-1033 anti-corrosion coatings, can be specifically resistant to high temperature flue gas and flue gas condensate strong corrosion friction ZS-1041 flue gas anti-corrosion Rotting coatings, ZS-711 inorgable anti-corrosion coatings that resist seawater and sea moisture corrosion, heat exchange anti-corrosion coatingS-722 thermal anti-corrosion coatings, and corrosion-resistant ZS-1031 anti-corrosion coatings under strong friction ZS-821 ceramic anti-corrosion coatings that can withstand erosion and corrosion of ethers, fluorines, oils, etc., ZS-1034 anti-corrosion coatings that resist most acid-base corrosion, solvent and intermediate media corrosion, ZS-1032 anti-oxidation and anti-corrosion coatings that resist strong oxidation and corrosion at high temperatures;
of anti-corrosion coatings in different materials how to choose for the operating conditions, analysis of good operating conditions corrosion media types, temperature, pressure and other factors, choose different industrial ZS anti-corrosion coatings. The research and development of material anti-corrosion coatings depends not only on the knowledge and experience of chemical industry, but also on the multidisciplinary knowledge and intersection of electronics, physics, ecology, machinery, instruments and management. Industrial anti-corrosion coatings high-efficiency anti-corrosion, as well as material anti-corrosion coatings advanced construction tools, construction and maintenance technology, on-site testing technology will affect the anti-corrosion effect of materials anti-corrosion coatings.