Daily life - economical and practical coatings
Coatings economic features:
l Wide range of options: Coating is a multi-variety engineering material with a wide range of services. According to different application ranges, it can produce a variety of different coating products to meet user needs. (such as self-drying, photo-curable, heat-curing coatings)
2, adaptability: In addition to special performance coatings, in terms of the coated object, it can not only be applied to the surface of steel and metal, but also can be applied to various non-ferrous metals (such as copper, aluminum, zinc and other metals), concrete, wood Surfaces such as plastic, rubber, glass, and fiber are not limited by the material, equipment, and shape, and they do not affect the surface properties of the object.
3, easy to use: General paint does not need to use very complex process equipment, a larger site and a large number of infrastructure investment can be used, can use a variety of different construction methods for brushing, spraying, dipping, showering, scraping, rubbing, Paint coating and electrophoresis, electrostatic, high pressure airless coating, fluidized bed or electrostatic powder coating.
4. Lower cost: Most of the raw materials for coating are rich in source, cheap and easy to obtain, and the production cost is lower than that of electroplating, enamel, glass steel, rubber lining, phosphate film, etc.
Dulux ( Western Chemicals )
Second, the role of paint
Coatings do not touch it in our daily lives, from the aviation industry to the daily industrial products. Because it is widely used in various metal, wood, cement, masonry, leather, fabric, plastic, rubber, glass and paper products, it has an important position in the national economy and national defense construction. Its development not only marks us The speed and technical level of industrial development also expresses the improvement and growth of our people’s lives and cultural education.
Their coating per capita amounted to 15kg/year or more, but our country can only be about 17kg/year at present. The total coating output of the world in the 1990s was about 20 million tons, and in recent years, China has undergone reform and opening up of paint production.
After the shift from the planned economy to the market economy, it is estimated that the output has approached 2 million tons, 400 times that of the 0.5 million tons/year in the early period of the liberation, and nearly 3 times the 700,000 tons/year in the 1980s, and considerable progress has been made.
The main role of the paint is as follows.
1, the protective effect
The coating can form a firmly attached continuous film on the surface of the object to be protected from various corrosive media (such as atmospheric moisture, oxygen, industrial atmosphere, H2S, CO2, NO2, NH3, etc. and chemical liquids such as acids The erosion of alkalis, salts, aqueous solutions, and organic solvents, etc., can also reduce the surface of the painted object or protect it from mechanical damage and corrosion from the sun and rain, thereby extending its service life.
2, decorative effect
The paint can bring bright or obvious color to the surface of the object, give people the feeling of beauty and lightness, and improve the use of the product and the value of the product sales. All kinds of light industrial products, wood furniture, house construction, pencils, toys, etc., need to be decorated with paints.
3, the role of the logo
Paint can be used as a color advertising sign, using different colors to signal warnings, dangers, safety, or stop signals. It can paint various pipes, roads, containers, machinery, and equipment with various color paints to regulate people’s psychology and actions. Make full use of color features. At present, the application of paint as a mark has gradually been standardized and recognized by people in the world.
4, special role
All kinds of special coatings also have their special effects, especially under certain harsh environmental conditions, such as the insulation of electrical products, for the requirements of wet tropical and marine areas. The products have three anti-dust properties (anti-moist heat, salt spray, anti-mold ) Anti-microbial corrosion-resistant coating is required on the bottom surface of the ship. The temperature-sensitive coating can indicate the temperature change of the surface to be coated to ensure safe operation. The fire retardant coating can slow down the propagation of burning speed and fire. The "self-sacrifice" can protect the spacecraft from high-temperature burning. In short, the special role of paint in the modern engineering technology and national defense construction is increasingly showing its special role, and it has been increasingly valued by people.
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