Polymers Flashcards
1
Q
When injection moulding, how is the polymer moved along the heating chamber?
A
By an Archimedean screw
2
Q
Polyethylene terephthalate (PET) is commonly used to make what everyday object ?
A
Drinks bottles are made from polyethylene terephthalate (PET)
3
Q
When marking out on the surface of a polymer, which is the preferred method?
A
chinagraph pencil will mark on the high-gloss surface.
4
Q
What are electrical plug sockets made from?
A
Urea formaldehyde
5
Q
What is a former ?
A
A former is a rigid shape over which materials can be heated or pressed to take its form
6
Q
What is fractional distillation ?
A
The way oil is heated to break it down to obtain different materials
7
Q
How is polythene produced ?
A
Polythene is produced by the polymerisation of the monomer ethene
