Spray plastic diamond mesh does not require thinning agents, is environmentally friendly during construction, and is non-toxic to humans; the coating has excellent appearance quality, strong adhesion, and mechanical strength; the curing time for spraying construction is short; the coating has much higher corrosion and wear resistance; no primer is needed; construction is simple, with low technical requirements for workers; costs are lower than spray painting processes; some construction sites have explicitly stated that electrostatic spray plastic technology must be used; during the electrostatic powder spraying process, the common dripping phenomenon seen in spray painting does not occur.

 

Principle of the spray plastic diamond mesh process

The spray plastic diamond mesh utilizes the phenomenon of corona discharge to adsorb powder onto the diamond mesh. Its working principle is as follows: Powder coating is delivered to the spray gun by a powder supply system using compressed air. A high-voltage electrostatic generator at the front end of the spray gun generates high voltage. Due to corona discharge, a dense charge is generated nearby. When the powder is ejected from the nozzle, it forms charged coating particles that are attracted to the workpiece with opposite polarity due to electrostatic force. As more powder is sprayed on, more charge accumulates. When a certain thickness is reached, electrostatic repulsion occurs, preventing further adsorption, thus allowing the entire workpiece to obtain a certain thickness of powder coating. The powder is then heated to melt, level, and cure, forming a hard coating film on the surface of the workpiece.