Thermoplastics Flashcards
1
Q
Give two characteristics of ABS.
A
- high impact strength
- good strength
- lightweight
- durable
- Stratton resistant
2
Q
Give two characteristics of polypropylene.
A
- food safe
- good chemical resistance
- good impact resistance
3
Q
Give the two main difference between thermoplastics and thermosets.
A
Thermosets are not recyclable whereas thermoplastics are recyclable
4
Q
Name three thermoplastics.
A
Polyamide (nylon) ABS HIPS Polypropylene HDPE PVC
5
Q
Describe the molecular structure of thermoplastics and give two characteristics of this structure.
A
there are weak crosslinks held together by electrostatic forces. The bonds can be relaxed and restructured using heat. This makes the general property of them malleable and recyclable.
6
Q
Give three properties of HIPS.
A
- lightweight
- good impact resistance
- food safe
- multiple colours available
7
Q
Give three uses of HIPS.
A
- food containers
- vacuum formed products
- fridge linings
- children’s toys
8
Q
Give three uses of polyamide (nylon).
A
- gears
- clothing
- bearings
- curtain rail fittings
9
Q
Give three properties of polyamide.
A
- hard wearing
- tough
- low coefficient of friction
- corrosion resistant
10
Q
Thermoplastics can be processed using all three types of processing. Name all three.
A
- forming (vacuum etc)
- moulding (injection etc)
- joining (adhesives etc)
