Polymers Flashcards
1
Q
Thermoplastic Definition
A
Can be heated and reshaped multiple times
2
Q
Thermosetting Definition
A
Can’t be reshaped once heated, shaped and cured once
3
Q
Examples of Thermoplastics
A
- Acrylic
- Poly vinyl Chloride (PVC)
- Polystyrene
4
Q
Examples of Thermosetting Plastics
A
- Melamine
- Epoxy Resin
- Kevlar
5
Q
Properties of Acrylic
A
- Tough & hard
- Malleable when heated
- Can be brittle when cold
- Comes in sheets
- Can be cut and shaped
- Comes in a range of colours
- Car headlights, glass replacement
6
Q
Properties of Polystyrene
A
- Inexpensive
- Lightweight
- Thin sheets
- Sound and heat insulation
- Not strong
- Easy to cut and shape
- Polystyrene cups, building insulation
7
Q
Properties of Melamine
A
- Hard
- Heat and stain resistant
- Food safe
- Limited colours
- Plates, kitchen work surfaces
8
Q
Properties of Kevlar
A
- Woven into clothes
- Excellent strength to weight ration
- High tensile strength
- Malleable
- Bullet/stab proof vests, rope
9
Q
Properties of Epoxy Resin
A
- Two parts mixed together to make adhesive
- Rigid and hard when cured
- Transparent
- Chemical resistant
- Adhesives, moudling of carbon fibre components
10
Q
Properties of PVC
A
- Good flexiblitiy and plasticity
- Tough and soft
- Chemical and weather resistant
- Hoses, plumbing pipes, fake leather
