powder coating situation faced with

From a consumer perspective, the Asia Pacific region will become the world's only demand growth in the region, is expected to increase by 1% compared to 2008 data. Re analysis of the Asia 

Pacific region, will find that in addition to China and India powder coating demand continued to grow, the other countries and regions have also appeared in the demand for a significant decline in demand. European and North American market demand forecast is very pessimistic, and according to the agency to provide forecasts, the above two areas of paint consumption will appear 6~7% 

decline. In addition to the adverse forecast demand, from the end of the requirements of the consumer market to improve, but also become a major feature of the market demand.

At a given temperature, the most important factor controlling the melting rate is the melting point of the resin, the viscosity of the powder particles and the size of the powder coating particles. In order to make the flow effect the best, the fused polymer should be completed as soon as possible so that there is a long time to complete the leveling stage. Use of curing agent relationship for flow and leveling with the required time and the very active powder 

to form a film often appear orange peel. The key factors that affect the film flow and flow are the melt viscosity of the resin, the surface tension and the thickness of the film. In turn, the melt viscosity, in particular, depends on the curing temperature, the cure rate, and the heating rate.

Most of the raw materials used are common polymers in the market, most of the conditions can meet the requirements of the use of performance. But there are some disadvantages, such as high melting temperature, low color level, and poor adhesion to metal surface. Nevertheless, the commonly 

used thermal plastic powder coating is still exhibit some unique properties, including polyolefin coating has excellent resistance to solvent; poly (vinylidene fluoride coatings with outstanding 

weathering resistance; polyamide has excellent wear resistance; PVC has a better price / performance ratio; thermoplastic polyester powder coating has the appearance beautiful, artistic advantages.