Pollymers Flashcards
What are the two types of polymers
Thermosets
Thermoplastics
Describe thermoplastics
Thermoplastics can be formed using heat and reshaped many times without changing properties
Describe LDPE
Low density polyethylene is quite flexible but also tough
What is HDPE
high density polyethylene is tough and has a higher strength to weight ratio than ldpe
What is hdpe is in
Bottles, drums containing chemicals, rigid plastic toys, storage boxes
What ldpe us in
Packaging where flexibility is required like squeeze bottles
What is PP
Polypropylene is a tough,flexible polymer with excellent fatigue resistance
What is PP used in
Food packaging, medical equipment, moulded furniture
What is HIP
High impact polystyrene is a rigid lightweight polymer with high impact strength
What are hip used
Plastic cutlery, yogurt pots, salad bowls
What is ABS
Acrylonitrile butadiene styrene is hard and tough with excellent impact strength
What is ABS used in
Casings, computer screen hardware, helmets, car bumpers
What is pvc
PVC is one of the most widely used polymers and can be both rigid and flexible
What is pvc used for
Pluming pipes, guttering, down pipes
What is UF
UF Is a hard opaque resin made from urea and formaldehyde, naturally occurring organic compound
