TYPES
· There are three types of plastics; The thermoplastic, the thermostable and elastomers.
1.The thermoplastics:
Features:
-Molecular configuration.
-Deforms when heated.
-Maintain their properties with heat.
-Can be processed repeatedly. -They're recyclable.
Types of thermoplastic;
1.1 Polietilé treftalado:
Properties:
-Transparency.
-Impermeability,
-Not float in water.
Ex: Water bottles, bottled carbonated beverages (fanta, coke, etc.), videotapes, cassettes, films, etc.
1.2 HDPE
Properties:
-Corrosion resistant.
-Floting on water.
Ex: Non-transparent bottles (fabric softener), garbage bags, containers and drop caps.
1.3 Polyvinylchloride
Properties:
-Chemical.
-Inert chemical.
-Not floats on water.
Ex: Pipes and tubes, plastic hoses (hoses), vinyl discs electrical insulators.
1.4 Low Density Polyethylene
Properties:
-Resident A corrosion.
Sura Al water.
Ex: Full plastic bag.
1.5 Polystyrene
Properties:
-Inodor, Tasteless and fragile.
-Not floats on water.
-He can change to make porexpan.
Ex: Food containers (trays), food containers such as yogurt, food packaging (cutlery, cups, plates, plastic).
2.Thermostable
Features:
-Molecular configuration: Chains crosslinked to form a rigid network.
-In Heat them degrade.
-Changes Its properties with heat: More rigid, more endurance, more fragile ...
-He can process only once.
-Not are recyclable.
Thermosetting type;
2.1 Phenol
Properties:
-Electrical -Isolate.
-Resistant to corrosion.
Ex: Applications (electrical devices, buttons light).
2.2 Amina
Properties:
-And -Rígid resistant.
Ex: Applications: Coating of chipboard.
2.3 Epoxy Resin
Properties:
-It's tacky.
Ex: Applications: Adhesives.
2.4 Polyester / Terylene
Properties:
-Synthetic -Fiber very elastic.
Ex: Applications: dresses, shirts, blouses, etc.
3.Elastòmers:
Features:
-Molecular configuration: Chains forming an elastic mesh.
-In Heat them fall apart.
-Changes Its properties with heat: more elasticity.
-He can process only once.
-Not are recyclable.
Elastomer types;
3.1 Rubber
Properties:
-Very Flexible
-Resistant
Ex: Applications:Pneumàtics, glove, balloon, shoe soles...
3.2 Neoprene
Properties:
-Flexible-little
-Resistant.
Ex: Applications: Wedding dresses diving.
3.3 Polyurethane
Properties:
-Resistant A absorption.
-Flexible.
Ex: Applications: Sponges, foam of seats, mattresses ...
3.4 Silicone
Properties:
-Elàstica.
-Flexible.
Ex: Applications: From bars, rods melt gun, medical prothesis.
3.5 Elastane
Properties:
-Synthetic Textile -glass fibers combined with other fibers.
Ex: Applications: Swimwear.
