The particles of powder are given an
electric charge while spraying them
to form the powder coating.
Answers
Explanation:
While coating, the powder particles are given a negative electric charge to create an electrostatic force of attraction between the particles and the positively charged metallic object. This electrostatic force of attraction helps the powder particles to adhere to the metallic object strongly.
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Answer:
powder coating is a method of applying a layer harder than paint on the surface of an iron object to prevent rusting.
in this method , a polymer resin , a pint and some other ingredients are melt mixed , cooled and ground into a uniform powder.
this powder is sprayed on the polished metal surface by electrostatic spray deposition .
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.
then the object is heated in the oven along with the coating.
a chemical reaction occurs in the layer resulting in the formation of long cross - linked polymeric chairs