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Flashcards in Thermo Plastics (plastics) Deck (6)
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1
Q

Polyamide (nylon)

A

Properties:
- Creamy colour
- Tough
- Fairly hard
- Resistant to wear
- Self-lubricating (creates a film that provides lubrication and reduces friction)
- Good resistance to chemicals and high temperatures
Used:
- Bearings
- Hinges for small cupboards
- Clothing
- Gear wheels
- Casings for power tools
- Curtain rail fittings
- Rope
- Combs

2
Q

Polymethyl methacrylate (acrylic)

A

Properties:

  • Stiff
  • Hard but scratches easily
  • Brittle in small sections
  • Good electrical insulator
  • Machines and polishes well
  • Clear
  • Durable outdoors
  • Range of colours
  • Impact resistance (glass substitute)
    Uses:
  • Signs
  • Covers of storage boxes
  • Aircraft canopies and windows
  • Covers for car lights
  • Wash basins and baths
  • Seats
3
Q

Polypropylene

A

Properties:
- Lightweight
- Hard but scratches easily
- Tough
- Good resistance to chemicals
- Resists weakening as a result of prolonged/ repeated stress (work fatigue)
Uses:
- Medical equipment
- Laboratory equipment
- Containers with built-in hinges
- ‘Plastic’ seats
- String
- Rope
- Kitchen equipment

4
Q

Polystyrene

A
Properties:
- Light
- Hard
- Stiff
- Transparent
- Brittle
- Good water resistance
- Range of colours
Uses:
- Toys
- Especially model kits
- Packaging
- ‘Plastic’ boxes and containers
5
Q

Low density plyethylene (LDPE)

A

Properties:
- Tough
- Good resistance to chemicals
- Flexible
- Fairly soft
-Good electrical insulator
- Range of colours
Uses:
- Packaging
- Especially bottles
- Toys
- Packaging film and bags

6
Q

High density polyethylene (HDPE)

A
Properties:
- Hard
- Stiff
- Able to be sterilised
- Range of colours
Uses:
- Plastic bottles 
- Tubing
- Household equipment