Application of powder coatings in rail transit industry

The rail transit industry refers to the industry that uses specific tracks and vehicles to carry out urban or inter-city passenger or freight transportation, including railways, subways, light rails, trams, maglev, etc. The rail transit industry has the advantages of large transportation capacity, high safety, energy saving, environmental protection, comfort and convenience, etc. It is an important means to deal with urban congestion and pollution.

Powder coatings are closely related to the rail transit industry, mainly reflected in the following aspects:

1. Powder coatings can improve the performance and life of rail transit equipment. For example, on car bodies, wheels, bogies, motors, batteries and other components, powder coatings can provide excellent anti-corrosion, weather resistance, wear resistance, impact resistance, insulation, and resistance. It has functions such as combustion to protect equipment from various environmental factors.

2. Powder coating can reduce the cost and energy consumption of rail transit equipment, improve coating efficiency and quality, reduce coating waste and pollution, save energy and materials, reduce the weight and resistance of equipment, and improve the conversion efficiency and operating efficiency of equipment. Powder coating is a new type of coating that is solvent-free, pollution-free, high-efficiency and energy-saving. It can achieve one-time spraying and molding, avoid multiple coating and drying, simplify the process and equipment, improve production efficiency and quality, reduce energy consumption and emissions, in line with the concept of green environmental protection.

3. Powder coatings can increase the beauty and competitiveness of rail transit equipment, provide a rich selection of colors, gloss, textures, etc., realize personalized coating designs, and improve the appearance and market appeal of equipment. Powder coating can choose different powder coating types, colors, gloss, textures, etc. according to the structure, function, appearance and other requirements of different rail transit equipment to achieve personalized coating design and improve the aesthetics and market competition of rail transit equipment. force.

The anti-corrosion and wear resistance of powder coatings in rail transit equipment are as follows:

1. Anti-corrosion: Anti-corrosion refers to the ability of the coating to resist erosion and damage to the substrate by various corrosive media (such as water, salt, acid, alkali, oxygen, etc.). Anti-corrosion is related to the coating’s resin, pigments, fillers, additives and other components. Generally speaking, the corrosion resistance of thermosetting powder coatings is higher than that of thermoplastic powder coatings because the coating of thermosetting powder coatings forms a network cross-linked structure after curing and is not easy to soften and decompose. The anti-corrosion performance of powder coatings in rail transit equipment mainly depends on the type, formula, and process of the powder coatings. Generally speaking, epoxy powder coatings, polyester powder coatings, acrylic powder coatings, etc. all have good anti-corrosion properties and can be used to coat car bodies, wheels, bogies and other components, providing excellent anti-corrosion, weather resistance, and resistance to corrosion. Wear and impact resistance to protect equipment from various environmental factors.

2. Wear resistance: Wear resistance refers to the ability of a coating to resist damage to the coating such as friction, scratches, and abrasion from external objects. Wear resistance is related to the hardness, toughness, adhesion, thickness and other factors of the coating. Generally speaking, the higher the hardness of the coating, the better the wear resistance, but too high hardness will cause the toughness of the coating to decrease and it will easily crack and fall off. Therefore, the wear resistance of the coating needs to comprehensively consider various properties of the coating. The wear resistance of powder coatings in rail transit equipment mainly depends on the type, formula, and process of the powder coatings. Generally speaking, epoxy powder coatings, polyester powder coatings, acrylic powder coatings, etc. all have good wear resistance and can be used to coat car bodies, wheels, bogies and other components, providing excellent anti-corrosion, weather resistance, Wear-resistant, impact-resistant and other functions protect equipment from various environmental factors.