For a long time, people have been using a variety of techniques to protect metal corrosion and prevent chemical corrosion. Among them, one of the most effective and most common methods for corrosion protection of metal equipment steel plates is to apply anti-corrosion coating on the metal surface to isolate the corrosive medium and the metal substrate hook manager, 010-57182232. For a long time, people have been using various technologies. Protect metal corrosion from chemical attack. Among them, one of the most effective and most common methods for corrosion protection of metal equipment steel plates is to apply an anti-corrosion coating on the metal surface to insulate the corrosive medium from the metal matrix. Corrosion of metal steel sheets is a phenomenon in which metal steel sheets are destroyed by chemical or electrochemical action of environmental media. Electric Paint Mixer Single Speed
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The corrosion of metal steel plates has spread all over the national economy, causing huge losses to the national economy. Zhisheng Weihua, Ergong, 010-57182232.ZS anti-corrosion coating personnel statistics, in industrially developed countries, direct economic losses caused by corrosion account for 1% to 4% of the total output value of the national economy, annual corrosion of rusty steel accounts for about About 20% of the equipment is scrapped due to corrosion. In China, the economic losses caused by metal corrosion are as high as 30 billion yuan per year, accounting for 4% of the gross national product.
Metal steel is a mixture of iron and cementite. The potential of iron is low, the potential of cementite is high, and the two elements with different potentials are formed by the action of electrolyte solution. The carbon battery is a cathode microbattery network that generates current. In the anode region, ferrite is precipitated due to the action of the corrosive medium, and the iron ions in a free state enter the solution, which is the active dissolution process of the metal.
The metal protective layer is mainly for phosphating, oxidizing and passivating the plating metal; the non-metal protective layer is mainly for coating paint, plastic, enamel, mineral grease and the like on the metal surface to form a protective layer. The purpose of these two protective layers is to isolate the substrate from seawater and replace the substrate with seawater to form a protection.
Take the marine anti-corrosion coating (inorganic protective layer) produced by Beijing Zhisheng Weihua Chemical Co., Ltd., which I have used, as an example. ZS-711 inorganic anti-corrosion coating solution is based on the inorganic polymer chelate synthesis film solution, which has been based on siloxy-Si-O-Si- bond, grafted with organic alkyl side chain as auxiliary, and then chelated with hydroxyl group as end chain. Anti-corrosion film-forming material, the bond has a good ternary synergistic effect on the chelating hydroxyl group and alkyl group on the silicon atom, and the solution has strong stability, which reduces the influence on the interior of the polymer, and the film forming material is denser and attached. Strong strength, high temperature resistance (comparable with Ni-based steel). The fillers in Zhisheng Weihua Marine Anticorrosive Coatings are composed of highly dispersed activated passivated metal particles, nanographite scales, nano-metal amphoteric oxides, and ultra-fine rare earth ultrafine powders. These anti-corrosion pigments that have been activated can resist corrosion and enhance polarization during corrosion protection, and have high acid and alkali resistance and corrosion resistance, which can well neutralize and prevent the potential of the substrate from rising, and can also avoid coating. The presence of the layer of pinholes, high hardness of the coating, wear resistance and impact resistance, long acid and alkali aging time, long-term application in seawater. Moreover, ZS anti-corrosion coating has excellent corrosion resistance and physical and mechanical properties on sulfuric acid, hydrochloric acid, phosphoric acid, salt water, caustic alkali, gasoline, etc. at normal temperature, and the surface of the coating is dense, and has good wear resistance and corrosion resistance.
The ZS-711 Zhisheng Seawater Anticorrosive Coating developed by Beijing Zhisheng Weihua is composed of a new type of Zhisheng Weihua inorganic polymer and a dispersion-activated metal, metal oxide nanomaterial and rare earth ultrafine powder, which can quickly react with iron atoms on the metal surface. The reaction produces a physical and chemical double protection. The coating can withstand chloride ion corrosion for a long time, and the effective protection metal and other materials are not corroded by seawater. ZS-811 high temperature anticorrosive coating is a water-based inorganic natural curing heat-resistant anti-corrosion coating developed by the military. Its physical properties, chemical properties and performance have exceeded the international advanced level. After several developments and improvements in high temperature resistant anti-corrosion coatings, the coating temperature resistance reaches 1700 °C from the highest 1200 °C. The base and filler of the coating are composed of heat-resistant and special materials. The binder contains a large amount of OH reactive groups, which reacts rapidly with the active components in the filler and the active surface of steel or other materials to form an inorganic polymer having a three-dimensional structure, and the coating is integrated with the matrix to form electricity. A chemically resistant and physically shielded, heat-resistant, anti-corrosive coating that is especially suitable for long-term protection of steel, or other materials used in high temperature, corrosive environments.
The high temperature resistant anticorrosive coating can protect the substrate from corrosion, oxidation, sealing and wear protection in a high temperature environment. The coating has high stability and will react with other active molecules in a high temperature environment and has a long service life.
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