The Use Of Power Coating In Metal Building Materials Is Expanded
As international environmental protection requirements have been stricter
, the development of traditional solvent-based coatings is restricted, but powder coatings as an environment - friendly paint have been developed by leaps and bounds. However, we should consciously note that the production of powder coatings only account for about 5% of the whole painting industry. In China, it is mainly used in the following five major areas: automotive industry, shipbuilding industry, pipeline industry, heat-sensitive materials, and building. Take building materials using powder coatings as an example, its covering efficiency, protection and decorative performance have attracted worldwide attention.
Appliances, transportation, buildings and general industrial powder coating are the main fields of application. Particularly, general industrial powder painting is used in three fields: metal furniture, construction materials and others. The fastest growing market segments in the powder painting are facilities for lawn and garden, sporting goods, recreational facilities and construction materials (such as aluminum windows and doors, etc.). Statistics show that there are about 40% powder covering profiles in domestic which demonstrates a huge space for development in China.
In particular, metal building materials, for its excellent durability, decorative feature and formability, are widely used in various aspects of the building. Aluminum building materials, with its excellent processing performance, light weight and other characteristics, accounts for more than 80% of the metal building materials. Since the advent of powder paintings in the early 1950s, it is rapidly grown in the area of aluminum building materials. At present, the application of the material in aluminum building materials have been extended from Europe to the Americas, Australia, Far East, Middle East and Africa. In painting of aluminum building materials, the representatives of powder coatings are epoxy resin, polyester resin, acrylic, etc.
Aluminum building materials was firstly applied from the mid-1950s, which adopted anodic aluminum oxide as the processing method. However, the corrosion resistance of the oxide film that it formed had certain limitation, so its application was restricted. Thereafter, the evaporation of solvent which contained by liquid coatings has become a serious environmental problems. In the last 10 years, there has been a rapid development in powder coatings. A number of new products and new technologies have been developed, products such as the low - temperature curing, super weatherable, acrylic powder coating, MDF, glass and plastic powder paintings, etc. have been put into the market. Due to its environmental characteristics and can be entirely converted to coating film, powder coating has been rapidly developed. Also, it is considered to be in line with the direction of sustainable development since there is little carbon involved in its production and construction process.
A clear trend in the field is that the application of powder coatings is increasingly widening. The main reason is that its VOC emission is nearly zero, which is very environmental friendly. However, the material has a big disadvantage which is the resin curing temperature is high so that it can only be painted on the metal substantial.
by: canton fair trading
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