Explain the difference between thermoplastics and thermosetting plastics.
Answers
Thermo Plastics
These are the polymers in which the intermolecular forces are intermediate between those of elastomers and fibers. These can be easily moulded by heating. In these types of polymers, ther is no cross-linking between the chains.
Examples: Polyethylene, Polystyrene etc.
Thermosetting Plastics
These are prepared from low molecular mass semi-fluid substances. When heated in a mould, they get highly cross-linked to form hard. infusible and insoluble products.
Example: Bakelite
Thermoplastics and Thermosetting Plastics
Explanation:
Thermo Plastics
Thermo plastics is a plastic polymer material that becomes pliable or moldable at a certain elevated temperature and solidifies upon cooling. They are transparent and are used for a wide array of applications from plastic bags to mechanical parts. Some of the common thermoplastics are acrylic, polyester, polypropylene, polystyrene, nylon and Teflon.
Example: PET
Thermosetting Plastics
These are prepared from low molecular mass semi-fluid substances. Thermosetting plastic can withstand very high temperatures. During its curing process, the polymers link together to form a permanent chemical bond. They are poor conductors of heat and electricity and hence used in electric switches, sockets, plus, frying pan handles, etc.
Example: Bakelite