Plastics Flashcards
1
Q
What is plastic made from?
A
Oils
2
Q
What are the two types of plastics?
A
Thermoset and thermoplastics
3
Q
What makes plastics cheap?
A
Low price 4 materials
Need less energy to make
Transport costs are lower
Easily mass produced
4
Q
What are the problems of plastics?
A
Hard to dispose of (doesn’t corrode),
When burnt they produce black chocking gases,
When molten they can cause severe burns,
Production for it is polluting,
PVC is hard to recycle (creates poisonous chlorine gas)
5
Q
What are examples of thermoplastics?
A
Polyethylene, PVC, Acrylic, Polypropylene, Polystyrene
6
Q
What are examples of thermosets?
A
Silicone
Epoxy resins
Polyester resins
Bakelite
7
Q
What are biopolymers? w/ examples
A
Natural rubbers Lignin DNA RNA Starches
8
Q
What do plasticisers do?
A
They make plastic flexible
9
Q
What do Pigments do?
A
They change the colours of plastics
