1.8 Performance Characteristics of Polymers Flashcards
1
Q
Give the 6 stock forms of polymers
A
- Granules
- Sheet
- Film
- Rods and other extruded form, tubes, bars
- Foam
- Powder
2
Q
Define thermoplastic polymer and give five examples
A
A material that can be reheated and reshaped repeatedly, allowing it to be recycled after its initial use.
- LDPE
- HDPE
- PP
- HIPS
- ABS
- PMMA (acrylic)
- Nylon
- uPVC
- PVC
3
Q
State three properties/characteristics of LDPE
A
- Lightweight
- Low level of rigidity
- Good chemical resistance
- Low stiffness
4
Q
State two uses of LDPE
A
- Detergent bottles
- Toys
- Carrier bags
- General packaging
- Food wrap film
5
Q
State three properties/characteristics of HDPE
A
- Tough
- Good chemical resistance
- Good stiffness
- Weather proof
6
Q
State two uses of HDPE
A
- Bottles
- Crates
- Buckets
- Bowls
7
Q
State three properties/characteristics of PP
A
- Lightweight
- Food-safe
- Good impact resistance
- Good chemical resistance
- Tough
8
Q
State two uses of PP
A
- Kitchen products
- Medical equipment
- Rope
- Folders
9
Q
State three properties/characteristics of HIPS
A
- Good impact resistance
- Good stiffness
- Lightweight
- Hard
- Tough
10
Q
State two uses of HIPS
A
- Yoghurts pots
- Refrigerator linings
- Single-use drinks cups
- Toilet seats
11
Q
State two properties/characteristics of ABS
A
- Tough
- Hard
12
Q
State two uses of ABS
A
- Safety helmets
- Toys
- Computer housing
- Rigid luggage
13
Q
State three properties/characteristics of PMMA
A
- Tough
- Hard
- Good chemcial resisatcne
- Food-safe
- Durable
- Easily machined
14
Q
State two uses of PMMA
A
- Illuminated signs
- Car light casings
- Baths
- Lightning units/covers
15
Q
State three properties/characteristics of Nylon
A
- Tough
- Corrosion resistance
- Good temperature resistance
- Low coefficient of friction