Powder Coating has Entered the Three Fields of Automobile, Home Appliance and Building Materials with its Advantages

May 26,2022

With the increasingly strict requirements of environmental protection in various countries, the development of traditional solvent-based coatings is limited, and powder coatings have made great progress as environmentally friendly coatings. At present, the global market share of powder coating is expanding, and it is gradually replacing the paint market with its advantages of cheap cost and simple operation. In terms of economy, quality, and environment, the application of powder coatings in the automobile industry, household appliances, and building materials also shows an increasing momentum.


powder coating


High usage of powder coating covers the automotive field


The application of powder coating on auto parts began in the mid-1970s, such as suspension parts, engine bodies, oil filters, air purifiers, brake pipes, and other parts. The preferred variety is epoxy powder coating; Polyester or acrylic is the preferred system for powder coatings for external metal components such as door and window components, wipers, luggage racks, and bumpers. These powder coatings are usually low gloss black or dark gray products.


Epoxy powder coating gives the coating excellent adhesion, mechanical properties, stone impact resistance, chemical resistance, and corrosion resistance. These characteristics can be realized after curing at a low temperature (130 ℃) for 15 minutes. It is used for the coating of parts under the hood, which can meet the requirements of extreme environments. The cast-iron engine body trusted by sandblasting is directly coated with epoxy powder and quickly cured with short wave infrared (160 ℃, 8min), and then the key parts such as the surface of the cylinder head are machined to achieve micron tolerance, to obtain the surface suitable for the positioning of the sealing gasket. The coating is required to withstand high-speed machining without defects such as debris, roll, or peripheral fins.


The environmental protection performance of powder coatings helps occupy the home appliance market


The home appliance industry is the largest single market for thermosetting powder coatings, accounting for about 1 / 3 of all powder coatings. Powder coatings are widely used in the electrical industry because powder coatings can not only give products a good appearance but also have the necessary wear resistance, chemical resistance, temperature periodic change, and damage resistance to the damage of devices.


Powder coatings are generally applied to the front and side plates of stoves and refrigerators, the top and cover of washing machines, clothes dryers, air conditioners, water heaters, dishwashing racks, freezers, and microwave ovens. The enamel used in many washing and drying equipment has also been replaced by powder coating. Powder coatings are widely used in the production of refrigerators, air conditioners, washing machines, small household appliances, and other products because of their close to zero VOC (volatile organic compounds) emission, and compliance with environmental protection requirements, high product cost performance, coating efficiency, and safety. At present, epoxy-polyester powder coatings with epoxy resin and polyester resin as the main film-forming materials are most widely used in household appliances.


The comprehensive properties of powder coatings have been widely recognized by the metal building materials industry


As a new solvent-free 100% solid powder coating, powder coating has been recognized by the majority of users because of its solvent-free, pollution-free, recyclable, environmental protection, saving energy and resources, reducing labor intensity, and high coating mechanical strength. As for powder coatings for building materials, they have the advantages of high coating efficiency and good comprehensive performance of protection and decoration, which have attracted extensive attention all over the world.


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