Question

The particles of powder are given an electric charge while spraying them to form powder coating
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Answer 1

Answer:

The particles of powder are given an electric charge while spraying them to form powder coating

Explanation:

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Answer 2

Answer:

1. powder coating is a method of applying a layer harder than paint on the surface of an iron object to prevent rusting.
2. in this method , a polymer resin , a pint and some other ingredients are melt mixed , cooled and ground into a uniform powder.
3. this powder is sprayed on the polished metal surface by electrostatic spray deposition .
4. in this method , the particles of the powder are given an electrostatic charge due to which a uniform layer of the powder sticks to the metal surface.
5. then the object is heated in the oven along with the coating.
6. a chemical reaction occurs in the layer resulting in the formation of long cross - linked polymeric chairs