Anti-corrosion paints are generally used in harsh and harsh environments, but they have a longer life span and can adapt to harsh environments to achieve non-corrosive effects. So what kind of brand of anti-corrosion paint quality is better? Anti-corrosion coating brand 1.PPG Founded in 1883 and headquartered in Pittsburgh, USA, PPG Industries is a global manufacturing company that produces and operates coatings, glass, fiberglass and chemicals and is the world leader in the industry. 2. Rainbow Hempel Group is the world's leading supplier of decorative paints, industrial paints, marine paints, container paints and yacht paints. Products can effectively protect man-made buildings from natural environmental corrosion and are widely used in wind power equipment, bridges, hospitals, ships, power stations and residential buildings. 3. Nippon Nippon Paint is a world-famous paint manufacturer, established in 1881 and has a history of more than 100 years. It is one of the earliest paint companies in the world. Established in 1962, Lisa Group is responsible for managing all of Nippon Paint's business activities in the South East Asian region. The business development covers 12 Asian countries. It has established more than 20 manufacturing plants and employs more than 6,000 employees. 4. Lan Ling Founded in 1980, Jiangsu Lanling Chemical Group Co., Ltd. is located in the beautiful Fangmao Mountain foothills in the eastern outskirts of Changzhou. It is one of China's top 20 major paint production companies and famous manufacturers of steel structures. It is a national key high-tech enterprise. The company is close to the Shanghai-Nanjing Railway and the Shanghai-Nanjing high-speed crossing. The transportation is convenient. The company occupies an area of ​​400,000 square meters and employs nearly 1,000 people, including 20% ​​of junior, middle and senior professional titles. 5. Double Tiger In 1928, "Double Tiger Paint" was born in Wuhan, which is the most important city in the province. It is a leading enterprise and pioneer enterprise in the Chinese national paint industry. "Shuanghu Coatings" is a key enterprise of Chinese coatings, the largest high-tech paint production base in the Central and South China region, and a top 500 Chinese technology and technology brand name. What are the functions of anti-corrosion coatings? 1, shielding effect Anti-corrosion coating is a polymer solution or dispersion, through a certain coating method. It is coated on the surface of the object and dried or cured to form a coating film. This prevents external corrosive media from contacting the metal surface under the coating film and avoids metal corrosion. From the electrochemical point of view, good shielding, poor permeability coating. The erosion of Tunchi is difficult to form, and the electrode reaction is difficult to perform and plays a protective role. 2. Inhibition and passivation Anti-corrosion coating in addition to containing film, but also according to the need to add eight kinds of pigments, such as adding eight alkaline expected when the water or acidic substances through the pancreatic infiltration. Alkaline pigments neutralize these substances to keep the coating and metal interface alkaline and passivate the metal. This shows that the anti-corrosion effect, some of the pigment can react with fatty acids in the film forming metal soap play a role in corrosion inhibitors. If eight soluble pigments (chromate such as zinc chromate: pigments) are added, these pigments come into contact with water and chromate ions dissolve out. With its strong oxidizing effect, the surface of the metal is passivated, thus playing an anti-corrosion effect. 3, electrochemical effect When a large amount of metallic zinc powder is contained in an anticorrosive coating, niobium forms a microbattery composed of zinc powder and a substrate steel plate. Electrochemically, zinc is a more abundant metal than steel, so current flows from zinc to steel. The zinc coating becomes the anode and the steel becomes the cathode, thus protecting the steel from corrosion. Corrosion protection principle of anti-corrosion coating First, the chemical principle of preservation The chemical principle of anticorrosion is to neutralize harmful acid-alkali substances into neutral harmless substances to protect the materials in the anti-corrosion coating from corrosive substances. Anti-rust coating often add some amphoteric compounds, such as aluminum hydroxide, barium hydroxide and zinc oxide, etc. These substances can easily react with the acid-base harmful substances to achieve anti-corrosion effect. Second, the physical principle of anti-corrosion The physical principle of anti-corrosion is to separate the protected material from the corrosive substances from the outside world with anti-corrosion coating. The physical principle of the anti-rust coating is to use a film former to obtain a dense anti-corrosion coating to isolate the anti-corrosion effect on the material to be protected. For example, the lead-containing paint and oil can react to form a lead soap to ensure the anti-corrosion coating. The compactness. Third, the electrochemical effect of corrosion The electrochemical action of corrosion protection is to add some special substances in the anti-rust coating so that when moisture and oxygen pass through the anti-rust coating, they will react to form anti-corrosion ions, which will passivate the surface of metal such as iron and steel, thus preventing metal ions Dissolution, to achieve the purpose of preservation, the most common of this special material is the chromate. Summary: The above is a small series of anti-corrosion coatings for everyone to introduce what brand of good content, and hope to be able to effectively help everyone, more information, please pay attention to this site. Anti-corrosion coating decoration decoration company to find how good decoration company which is good to buy experience to buy skills
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