What is the spraying method of PTFE spraying base oil?

the working principle of electrostatic powder spraying method is almost the same as that of ordinary liquid coatings, but the difference is that powder spraying is dispersed rather than atomized. It is a kind of coating sprayed by electrostatic powder spray gun, which makes powder particles negatively charged while dispersing. The charged powder particles are coated on the grounded coating by airflow (or other forces such as centrifugal force) and electrostatic attraction, and then heated, melted and solidified to form a film. Electrostatic powder spraying method is a dominant powder coating method in the field of industrial coating.

meaning of electrostatic powder

electrostatic powder spraying is commonly known as "electrostatic plastic spraying".

electrostatic powder spraying is a coating machine with atomizing nozzle (to atomize the coating) and discharging stage (to generate electricity and current) to micronize the coating, and charge it, so as to form an electric field between the electrode and the coated object, and use its electrostatic adsorption to paint.

Main features: the spraying method can be manual, automatic or manual+automatic. Spraying material is 1% solid powder, free powder can be recycled, and the recycling rate of paint can reach 98%. Suspended transportation system, high degree of automation. The coating has few micropores and good corrosion resistance, and can be sprayed with thick film at one time.

electrostatic powder spraying technology appeared in the 196s, which was mainly used for metal surface coating. In the late 199s, with the development of powder coatings and spraying equipment, it became possible to apply electrostatic powder spraying technology to nonmetallic surfaces.

since powder coating spraying technology entered the painting industry, the market share of powder coating in general industrial coatings has been increasing year by year, because powder coating technology has unique advantages.

reduce the pollution to the environment

with the increasingly strict regulations of environmental protection law on the content of volatile organic compounds (voc) in the atmosphere, the coating industry has been trying to develop a coating technology that is mild to the environment. After long-term research and experiments, it is found that "electrostatic powder spraying" is the cleanest coating technology that can be achieved at present.

Powder coatings are inorganic solvent-based coatings without volatile solvents such as organic solvents and water, which greatly reduces the pollution hazards caused by solvents, including poisoning incidents of operators caused by organic solvents; And fire will not be caused by organic solvents. Since the appearance of powder coatings, there have been no major safety accidents caused by powder coatings.

powder coatings are pure solid coatings, which can be sprayed fully automatically. A large amount or overspray powder is easy to be collected by the recycling system, so as to achieve the purpose of recycling. Therefore, the utilization rate of powder coatings can reach almost 1%, which makes the coating industry reduce the cost of waste treatment and minimize the degree of environmental pollution.