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    Home > Coatings News > Paints and Coatings Market > Common knowledge of coating: application of waterborne coating in railway freight car coating

    Common knowledge of coating: application of waterborne coating in railway freight car coating

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tip: at present, the research and application of waterborne coatings have made breakthroughs in many fields There are many kinds of water-based coatings, building coatings have already achieved water-based, and the research and application of water-based wood, flooring, automobile, fire prevention, anti-corrosion and other coating products are also colorful Cathodic electrophoretic coating has been used in vehicle primer for many years with mature technology In recent years, the application of water-based coating on railway freight cars has been attempted, but due to the limitation of traditional technology, its application still needs a period of time With the continuous development and progress of waterborne coatings, the application will gradually expand and deepen, and eventually replace solvent based coatings Three Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Home of coatings: at present, the research and application of waterborne coatings have made breakthroughs in many fields There are many kinds of water-based coatings, building coatings have already achieved water-based, and the research and application of water-based wood, flooring, automobile, fire prevention, anti-corrosion and other coating products are also colorful Cathodic electrophoretic coating has been used in vehicle primer for many years with mature technology In recent years, the application of water-based coating on railway freight cars has been attempted, but due to the limitation of traditional technology, its application still needs a period of time With the continuous development and progress of waterborne coatings, the application will gradually expand and deepen, and eventually replace solvent based coatings 3 Composition and characteristics of water-based coating the water-based coating is prepared by grinding and mixing the water-based resin, pigment and additives In general, the resin is waterborne by 3 ways First, the amino group or carboxyl group is introduced into the resin molecular chain, and then the water is dissolved in the form of salt and neutralization by acid or alkali; the two is the introduction of hydrophilic groups in the resin, such as carboxyl, hydroxyl, amino, ether groups and so on, and emulsion is dispersed in water; three, the external emulsifier is forced to emulsify, forming emulsion which can be dispersed in water Due to the large surface tension of water, pollutants are easy to make the film shrink, so the surface cleanliness of the workpiece is required in the construction process In addition, the wear of water-based coating on piston type or plug type high-pressure airless spraying machine is large, because the direct contact of water makes the piston not well lubricated and the friction coefficient of piston rod increases, which leads to frequent replacement of sealing ring Although there are some problems in the waterborne coating, it has been gradually applied to the requirements of railway freight car coating by adjusting the formula and improving the process equipment 4 Application of water-based coating on heavy-duty railway freight cars in April 2014, a company began to use water-based coating in batch on 80 t railway freight cars, the car body part is made of stainless steel, and the underframe part is made of carbon steel Coating process of water-based coating truck: plate shot blasting pretreatment → surface cleaning → pre priming → drying → surface treatment → touch up priming → painting transition primer → drying → painting water-based finish → drying → painting marks → delivery for inspection Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,
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