Thermosetting hammer thermal spray powder coatings is also called the art type of powder coating, because coating can form as a hammer blow after the metal surface decorative pattern, this type of powder coatings not only has many advantages of thermosetting powder coating commonly, smooth and beautiful decorative pattern, coating, adornment sex is strong, also can make up and covered the surface rough, uneven defects, such as hammer powder coatings has the colour and lustre downy, coating flexibility, solid and durable, so widely used in instruments and meters, power distribution cabinets, security doors, home appliances furniture, lighting, medical equipment and other fields of metal surface coating.

Hammer pattern powder coating is prepared by using the principle of curing powder coating's melting viscosity, surface tension and curing speed, etc. There are usually several ways to produce hammer pattern powder coatings.

Add packing in the production of hammer powder coatings principle: increase the dosage of packing, or the use of high oil absorption packing, to obstruct the normal flow when the resin melt, the resin can not fully inclusive or just package appearance filler particles, no excess resin to fill the space between the fillers particles, thus forming the skeleton of the three-dimensional structure for fillers particles.

Using this method need to pay attention to is: different filler oil absorption is different, generally to achieve the same volume concentration, small density, small particle size than the surface area and large oil absorption yan filler amount. The advantage of the hammer grain produced by this method is that its cost is low, but if the amount of filling is not controlled properly, the powder coating construction performance, coating film mechanical properties, chemical resistance properties will be affected. In general to use this method to produce high efficiency and good stability of the product, the production process can be made some adjustments.

Join incompatible material production hammer powder coating is to point to: add some incompatible polymer inthermal spray powdercoating, its melting point higher than the melting temperature of powder coating resin binders, powder coating containing incompatible premixed by melt extrusion with other resin curing agent are incompatible, curing film when constitute the basic material of resin coating on the polymer particles, forming a texture. This method should pay attention to the need to strictly control the types of incompatible substances and the amount of additives, otherwise the mechanical properties of the coating will be affected. The hammer pattern powder coating produced by this method has good chemical and corrosion resistance.

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