Coating line, powder coating production line, painting line, spraying machine, electrophoretic coating, painting company, painting equipment
At present, Hangzhou spraying machine, coating line, coating production line, painting line, spraying machine, electrophoretic coating, painting company, coating equipment are divided into oil-based coatings and water-based coatings; Waterborne coatings, solvent based coatings, powder coatings, high solids coatings, etc. Among them, the water-based paint refers to the paint with water as the diluent, and the volatile organic solvent is very rare, only 5%~10% of the solvent-based paint, and the film formation does not use the curing agent, so there is no problem of volatilization of the free TDI, belonging to the green Environmentally friendly products.
Classification and characteristics of waterborne coatings:
According to the dispersion form, the water-based paint includes three kinds of water-soluble paints, water-dilutable paints and water-dispersible paints (latex paints). Their dispersion mechanism is different, and the performance of the products is also quite different, but regardless of the type, they use water as a solvent or dispersion medium. According to the film-forming substances, water-based paints can be divided into water-based acrylic paints, water-based polyurethane paints, water-based epoxy paints, etc. In recent years, the film-forming materials of water-based paint products have developed toward the direction of mixed modification.
The characteristic of water-based paint is that water replaces organic solvent as solvent or dispersion medium, which saves a lot of organic material (petroleum) resources, greatly reduces the pollution of the organic solvent in the paint to the atmosphere and the fire hazard during construction. In addition, when the water-based paint sprayed by Hangzhou powder coating machine manufacturers is coated with metal materials, the workpiece can be painted and applied without oil removal, rusting and phosphating, saving coating time and energy consumption. Electrophoretic coatings can be uniformly painted in the slits, tube holes, welded edges, etc., and the coating thickness is basically the same at the corners and edges, which is superior to solvent-based coatings.
Oily fluorocarbon paint products have the following characteristics:
1. The coating film of oily fluorocarbon paint is extremely strong in UV resistance and can maintain the original color for a long time. The fluorocarbon paint has ultra-durable performance, reduces maintenance costs, reduces overall cost, and prevents carbonation of concrete structures.
2. Using ceramic composite technology, the coating film has higher chemical stability, more compact and harder, and reduces the surface chargeability of the coating film, reduces the accumulation of various dusts in the atmosphere, has strong pollution resistance, and has self-cleaning function. It can maintain long-term natural cleanliness.
3, strong solvent resistance, good alkali resistance, suitable for special harsh environments.
4, the film also has fire, temperature, anti-static, anti-radiation and other functions.
The comparison between oily and waterborne coatings should be based on the same grade of products, and there are three types of waterborne coatings: one is waterborne wood coating with acrylic as the main component; the other is composed of acrylic and polyurethane composites. The third is 100% polyurethane water-based paint, its wear resistance even reaches several times that of oil-based paint, which is a high-grade product in water-based paint.
From an environmental point of view, waterborne coatings have a natural advantage over oily coatings (solvent wood coatings). In theory, the lower the VOC content, the higher the environmental friendliness, but the low content of VOC has an effect on the abrasion resistance, hardness and scratch resistance of oil-based coatings. The above indicators have also been the technical problems that water-based coatings need to overcome. . How to achieve environmental protection and high quality is the focus of the current major coatings manufacturers.
Water-based coatings have relatively high technical requirements on drying time, hardness, fullness, etc., and the manufacturing process is relatively complicated, and large-scale production equipment is required to produce products with relatively stable performance, and the production cost is relatively high. This is also the reason why the price of waterborne coatings of the same grade is much higher than that of oily coatings.
Hangzhou spraying machine, coating line, coating production line, painting line, spraying machine, electrostatic spray equipment, painting company, coating equipment used in waterborne wood coatings in hardness, fullness, aging resistance and other decorative effects are far worse Oily wood coatings, consumers who demand high levels of home environment may even be renovated after three or five years. Since the general water-based coatings are not highly resistant, most consumers choose to use water-based paint only on the wall surface, and oil-based paints are often used for parts that are frequently scrubbed, such as door and window furniture.