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preparation de peinture electrostatique

What is electrostatic painting?

Electrostatic painting or powder coating is a coating that differs from conventional paints such as acrylic or glycerophthalic. Electrostatic paint is usually applied to metal surfaces. However, it is also suitable for other surfaces, provided that they have electrical charges (we’ll explain why later).

In this article, our industrial painting experts will tell you everything you need to know about this type of painting.

Electrostatic paint composition

Electrostatic paint is an excellent coating that is suitable for many surfaces. There is no single electrostatic paint, rather it is composed differently according to the customer’s needs.

Epoxy powder-based electrostatic paint

Epoxy powder paint is composed of resin and hardener and recommended for application on pipes and industrial construction parts. Its main advantage is high corrosion resistance.

Polyester-based electrostatic paint

Polyester-based paint is composed of pigments and binders and is diluted in a solvent. The evaporation of this liquid provides a coating with excellent adhesion that avoids the yellowing of the paint. This product is recommended for metal frames, parking lot roofs or garden furniture.

Hybrid electrostatic paint

As its name suggests, hybrid paint is a combination of the two previous paints. Composed of polyester and epoxy, it has a high chemical resistance. This paint is excellent for application on elements such as electrical panels, household appliances or automotive parts.

In addition to these three types of paint, there are many other types of industrial paint.

How is electrostatic paint applied?

Electrostatic paint application is not an everyday process. A qualified industrial painter will use a special statically charged spray gun with a compartment for the powder paint to be applied properly.

The paint is then ejected with a positive or negative charge (depending on the charge on the surface to be painted) to ensure that the coating is properly bonded. The powder is then drawn like a magnet to the surface of the part to be painted and permanently fixed there. The last step is to heat the part in an oven at 400 degrees Fahrenheit.

This process produces an impeccable result without smudging.

Electrostatic painting benefits

As mentioned above, electrostatic paint is a coating with many qualities. Let’s look at some of the other advantages of using this paint:

  • Limits the use of oils or solvents
  • Available in a wide range of colors and finishes (gloss, satin, metallic or matte)
  • Very fast drying
  • Highly resistant to moisture, corrosion and scratching
  • Excellent long-term performance
  • Easy to use in conjunction with other equipment treatment methods, such as equipment refurbishing.

What are the disadvantages of electrostatic painting?

Like everything else, this paint has its drawbacks. However, there are only a few disadvantages:

  • Not suitable when multiple coats of paint are required
  • Substrates must be electrically charged to be compatible
  • Cannot be mixed with other paints
  • Requires special equipment

Need electrostatic painting for your equipment? Trust Trexo with your project!

For over 30 years, our industrial painting service has been adding value to your facilities. Our equipment is built with the best technology to best meet your needs.

In Quebec or Ontario, our team is ready to travel to your location to ensure the longevity of your industrial equipment with the application of custom-made coatings (such as electrostatic paint).

Contact us for your projects or if you have any questions.