powder coating spray 1

2016/10/13 9:42:59

Powder coating is a new technology and new technology in the field of modern painting, and 


it is also one of the new technologies in our country. It has obvious advantages in the 


field of home appliance and other fields. Powder coating is a high protection, high 


decorative coating method, to be satisfied with the coating effect, it is necessary to 


influence the coating effect factors to control. As the operation of the construction 


personnel of powder coating, if not easy to produce in the process of painting the ills of 


knowledge, will not be able to produce qualified products or a problem arises, do not 


start.

First, the superiority of powder coating

Powder coating is a new type of coating 


material which does not contain liquid solvent and diluent. Because of its high decoration, 


heavy corrosion resistance, powder can be recycled, no organic solvent for environmental 


pollution and other characteristics determine its wide range of application space.

Powder 


coating construction compared with the traditional paint construction, there are the 


following advantages:

1, powder coating is a solvent-free coating, which determines the do 


not need to put the main film-forming material and auxiliary film-forming material, pigment 


and aggregates are soluble in organic solvents, solves some organic solvent insoluble 


polymer film-forming substance can be used as coating for the problem. But a lot of 


difficult to be dissolved in the solvent of the polymer material is anticorrosive and 


decorative paint will be less of the backbone of the.

2, powder coating because of non 


volatile organic solvents, not easy to burn and explosion, as long as the accumulation of 


dust to prevent excessive can solve the fire and explosion hazards, this paint and other 


flammable solvents can not be overcome.

3, due to the powder coating itself does not contain 


organic solvents, the construction operation and the process of powder without irritating 


odor, not only can prevent the environment pollution and destruction, but also for the 


operator's own physical and mental health.

4. The utilization ratio of paint in the 


construction process of the liquid coating is only 60% - 50%. The powder coating on a 


powder rate of about 70% - 80% (by the shape of the workpiece and other factors), and the 


rest of the powder can be recycled two times, the utilization rate of 98% - 90%.

5, paint 


class liquid coating construction process must be added 50% to 30% of the diluent, and the 


role of these thinner is only to adjust the viscosity, and not to be cured into a film of 


the necessary components, back in the process and volatile off. Not only pollute the 


environment, but also do a lot of work, a waste of raw materials, improve the production 


costs; powder coating construction process, it is not required such a diluent.

6, paint 


liquid coating thickness is 15 - 30 m, and a coating powder coating can reach 60 - 150 m, a 


coating to the required thickness, reduce labor intensity, suitable for automated assembly 


line production operation.

7, powder coating after curing the appearance of fullness, color 


and soft, to paint liquid coating after curing the appearance of dust.

8, powder coating 


because of no solvent, the curing process is not easy to form a pinhole and bubbles, and 


the liquid coating due to the presence of volatile solvents and diluent, the curing process 


is easy to generate pinhole and bubbles.

9, powder coating for ease of transport, will not 


leak and volatile, and the transportation of liquid coating is very convenient, easy 


leakage and volatile, and may even burn the explosion.

10, powder coating, corrosion 


protection is good, the production of low comprehensive cost, paint can not be comparable 


with the liquid paint.

It is precisely because of the advantages of the above many liquid 


coating, powder coating in the past twenty years in the land of China showing a thriving, 


flourishing situation. But from a scientific point of view, everything has its advantages 


and disadvantages. Powder coating in the use of the process is still difficult to change 


the color, the production equipment is complex, must be cured at high temperature and so 


on. This is the vast number of people engaged in the coating industry need to continue to 


overcome the problem.

The application of powder coating in industry and production in China 


is only 20 years of history, the current production process and construction applications 


have become more mature. In the late 80s, in the domestic and foreign set off a "hot", 


especially in China, in recent years, the annual growth rate of powder coating has more 


than 25%, which is rare in the history of the paint. Foreign advanced industrial countries 


due to the early start, the foundation is good, at present, the annual growth rate of 15% - 


10 of the rate of growth. Two phase comparison, I have a broad market demand. On the 


current market products, large refrigerators, washing machines, anti-theft door, small to 


hardware products, and electrostatic powder spraying is not a source of confusion. This is 


enough to indicate the bright prospects of the development of China's powder coating 


industry.


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