1, processing method:
After degreasing and preheating, the plastic powder will adhere evenly after soaking in the fluidized bed above the melting point of the powder coating, and then the plasticized polymer will be crosslinked and leveled to form a steel-plastic composite product. Thermoplastic powder coatings have the characteristics of softening when heated and curing into films after cooling, mainly relying on physical melting and plasticization.
Use electrostatic powder spraying equipment (electrostatic plastic spraying machine) to spray powder coating on the surface of workpiece. Under the action of static electricity, the powder will be uniformly adsorbed on the surface of the workpiece to form a powdery coating. Powder coatings are baked, leveled and cured at high temperature to become final coatings with different effects (different kinds of effects of powder coatings).
2, material characteristics:
Thermoplastic powder, such as polyethylene, polyvinyl chloride, tetrachloroethylene, etc., is mostly used in the plastic dipping process. Plastic spraying is the use of plastic powder spraying effect in mechanical strength, adhesion, corrosion resistance, aging resistance and other aspects better than the painting process, the cost is also under the same painting effect.
3. Functions and uses:
Impregnated plastic products are mostly used outdoors and are suitable for non-toxic coatings, generally decorative, anti-corrosion and wear-resistant coatings; Plastic spraying products are mostly used indoors. Generally speaking, the price is cheaper than dipping.
Extended data:
Characteristics of dip coating:
1, rich in materials, cheap and nontoxic.
2. A wide range of colors can be configured, including hard, soft, fine, rough, matt and luminous dips.
3. The coating has the properties of strong adhesion, low temperature resistance, impact resistance, wear resistance, damp heat resistance, salt spray resistance, tensile resistance, acid and alkali resistance, aging resistance, high pressure resistance, chemical resistance, excellent weather resistance and no cracking when used in the open air.
4. The coating film has excellent electrical insulation performance, and it can keep its characteristics even if it is immersed in salt solution.
5, the plastic dipping solution does not contain toxic heavy metal ions, is antibacterial and environment-friendly, the raw materials can be recycled, and the coating thickness can be controlled. There are almost no three wastes in the production process, and the production conditions are mild, which is beneficial to environmental protection.
6. The film has good flexibility and excellent tensile strength and elongation at break.
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