PLASTICS - Thermoplastics and Thermosets
Most plastics are produced from oil. They vary a lot,
in the way they are made and can be either rigid or flexible. Depending
on what plastics are needed for they can also be strong, hard or soft
for clothing etc.
TYPES OF PLASTiCS
Plastics are divided Into 2 groups: THERMOPLASTICS and THERMOSETS
The word “thermo” means heat e.g. thermometer, thermostat etc. The way that a piece of plastic reacts to heat determines the group it belongs to.
Thermoplastics soften once heated. They can be re-heated and re-shaped again and again.
Thermosets are SET once they have been produced. They do not soften once re-heated; in fact they harden. Furthermore, thermosets cannot be used again.
Common Thermoset and USES
Urea Formaldehyde (U.F) - Electrical fittings
Epoxy Resin - Adhesives (Araldite)
ACRYLIC- plastic baths