Ans-: Plastic is a material that shows the property of plasticity and can be moulded into any desired shape and dimensions by the application of heat and pressure.
Important properties of Plastic material
- Low specific gravity
- Low thermal and electrical conductivity
- Easy to fabricate in complicated shapes and accurate dimensions by moulding process at low costs.
- Tailorable optical, chemical and mechanical properties.
- Mugs (Low density polyethene)
- Overhead water tank (High density polyethene)
- Pencil box (Polypropylene)
- Audio-casettes (Polystyrene)
- Baby feeding bottles (Polycarbonate)
- Bristles for tooth brushes (Nylon)
- Bottles for household liquid (PVC)
- Non-stick cookware (Teflon)
- Coloured toilet sheets (Urea Formaldehyde resins)
- Bottles for cold drinks, fruit juice, beers (PET)
Tags
polymers