why do painters use sand paper before painting the doors??
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hey mate here is your answer..
it is because sand paper polishes the door and removes the impurities from it which helps to paint door smoothly.
it is because sand paper polishes the door and removes the impurities from it which helps to paint door smoothly.
Answered by
1
HEY!!
Sandpapers provide very high force of friction. Painters rub the sandpaper on the door for increasing the roughness of the surface of the wall and the door. When roughness increases, force of friction increases and thus adhesive force also increases. Adhesive force is the force of attraction acting between the molecules of different substances. Paint sticks to the door on account of adhesive force.
Sandpapers provide very high force of friction. Painters rub the sandpaper on the door for increasing the roughness of the surface of the wall and the door. When roughness increases, force of friction increases and thus adhesive force also increases. Adhesive force is the force of attraction acting between the molecules of different substances. Paint sticks to the door on account of adhesive force.
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