| Automobile industry will be the powder coating the consumers |
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Powder coating is made of polymers, pigments and additives. In the past 10 years, the world of powder coating develops very fast, with an average annual growth rate of 8%-15%. The United States government control of volatile organic compound emissions regulations conducive to promote the application of powder coating.
However, application of the powder coating because of some of its inherent shortcomings and limitations, such as smoothness is low and difficult to change color in the spray hood. However, powder coatings will enter the market, it is estimated, in the next few years, powder coating on the average annual growth rate of at least 15%.
Automobile industry will be powder coating consumers
The requirement of environmental protection is to promote the development of powder coatings in a dynamic, because manufacturers are looking for ways to reduce product VOC, therefore in some areas of powder coating natural alternative to liquid coating. Powder coating is constantly to OEM products painting market expansion. Powder coatings with low VOC content, easy to clean, sprayed coating is recyclable; construction after the coating film is basically no pinhole, usually smaller than a liquid coating is easy to construction, the formation of the coating durability. Although the application of powder coating effect is obvious, but its negative effect still need to research and test. The environmental advantage and technical advantage is in the powder coating instead of liquid coating key.
Today’s powder coating appearance than ever more attractive. People with special effects and the special appearance of the coating is of interest, such as paint, paint, metal effect of wrinkle paint and colorful paint markings. Powder coating will also enter the special effect in the field.
Powder coating of an application window is the automobile industry. Powder coating has entered the automobile industry, especially in automotive finish and bodywork primer. The powder coating can bring high quality surface, without primer, can with metal parts formed the very strong binding force, and powder coating has excellent anti-corrosion, heat resistance, impact resistance and wear resistance, color choice scope is very broad, high gloss, low gloss, metallic color or is the transparent coating has. Texture from smooth surfaces to fold or rough coating can be arbitrarily chosen, the thickness of the coating film can be changed in order to adapt to different requirements, the powder coating powder coating performance of today’s maturity. In the past a long time car assembly plant is used in liquid coatings, until now, to the global majority area, car assembly plant using powder coating is still an unsolved problem, although in the past few years has made great progress, but still did not reach the large-scale use of powder coating degree.
In the United States, powder coatings in automotive finish and bodywork primer on the maximum amount of the powder coating, the effect is very good, but the powder coating used for automobile finish that little progress, especially as automobile finishing coat less. Some businessmen think, powder coatings used as a finishing coat is still much space, only the car factory to powder coating equipment produced by the investment cost make it difficult to resolve. Due to the automotive industry pays more and more attention to the durability of automotive, and powder coating not only economic, and resistant to corrosion and destructive better, so use powder coating of automotive chassis and body will be more and more widely.
Foreign automobile powder coating preparation technology progress
The traditional preparation of powder coating method for dry and wet the dominant dry and dry mixing method and melt mixing method; wet divided into mostly use the melt mixing method, defect is changed breed and change color more difficult, the size distribution is wide, difficult to produce low temperature curing and ultrafine particle size of powder coatings. For people on the preparation of powder coating process, made some progress.
The development and utilization of fluid method known as powder coating and preparation method of revolution, on twenty-first Century car powder coating development will play an important role in its working principle is: carbon dioxide at critical point is liquid, liquid. Carbon dioxide and gaseous carbon dioxide between clear interface, if the pressure falls slightly or slightly higher temperature will exceed the critical point, the interface instantly disappear and become a chaos, known as super critical point. Continue to increase the temperature or pressure reducing, carbon dioxide into gas. According to this principle, the powder material into a mixing device of supercritical fluid processing equipment, supercritical carbon dioxide to paint all the shunt body, so that at a low temperature to melt extrusion effect. Material by spray and during graded kettle produce product, the entire production process can be controlled by computer. |
| release time:2014/1/2 |
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