Question

The particles of powder are given an electric charge while spraying them to form the powder coating. Give reason

Answer 1

Powder coating can be used as both a protective and decorative finish, with an almost unlimited range of colors and textures available.

We know that opposite charges attract each other. So we give the substance positive charge and the spray negative charge, so that due to electrostatic attraction the spray forms a uniform layer over the substance


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Powder coating is a type of coating that is applied as a free-flowing, dry powder. The main difference between a conventional liquid paint and a powder coating is that the powder coating does not require a solvent to keep the binder and filler parts in a liquid suspension form. The coating is typically applied electrostatically and is then cured under heat to allow it to flow and form a "skin". The powder may be a thermoplastic or a thermoset polymer. It is usually used to create a hard finish that is tougher than conventional paint. Powder coating is mainly used for coating of metals, such as household appliances, aluminum extrusions, drum hardware, and automobile and bicycle parts. Newer technologies allow other materials, such as MDF (medium-density fibreboard), to be powder coated using different methods. The powder coating process was invented around 1945 by Daniel Gustin US Patent 2538562.

Answer 2

This is done to provide coating over the metal surface.

Explanation:

• The particles of the powder are provided with an electrical charge so that a uniform layer of powder coating get stick on the metal surface.
• Powder coating is important for dry finishing process.
• The industries uses this method for providing the high-quality, and durable finishing over the metal surface.
• This is important technique for providing the decorative finishing over surfaces and providing a texture to the material.

Learn more about coating:

Powder coating and teflon coating information​: https://brainly.in/question/10725391