Question

why is plastic a better insulater than dry rubber

Answer 1

Some plastic provides insulation. EX: Polystyrene is formed by styrene molecules. When we heat polystyrene blow air through the mixture, it forms Styrofoam. Styrofoam is an insulator …. Plastic normally has no compression properties. Rubber is a natural substance.rubber has insulator property due to hydrophobicity and have ability to regenerate its water-breading properties when aged due to contamination generated over it ,then a electrolytic film is developed which is conductive and cause leakage of current and become no more conductive.