Plastics Flashcards
(15 cards)
What are thermoplastics?
Plastics that can be reshaped with heat
What are thermosetting plastics?
Plastics that CANNOT be reshaped with heat
What are the properties of Acrylic? (Thermoplastics)
- good insulator
- resistant to weather conditions and acids
- easily machined
What can acrylic (thermoplastic) be used for?
- furniture
- baths
- watch and clock glasses
What are the properties of polythene? (Thermoplastic)
- high density (rigid and hard)
- low density (tough and flexible)
What can polythene (thermoplastic) be used for?
- bottles
- bowls
- toys
What are the
Properties of PVC? (thermoplastic)
- tough material (can be purchased hard)
- alternatively flexible for being welded/bonded with adhesive glue
What can PVC (thermoplastic) be used for?
- waterpipes
- raincoats
- coating on electrical wires
What are the properties of polyurethene? (Thermosetting)
- very tough
- water resistant qualities
What are can polyurethene be used for?(thermosetting)
- basis on many paints/varnishes
What are the properties of melamine formaldehyde?(thermosetting)
- excellent insulator
- smooth surface
- hygienic qualities
What can melamine formaldehyde be used for?(thermosetting)
- electrical plugs
- making plastic laminates
What are the properties of polyester resins?(thermosetting)
- tough material that can resist impact
- water resistant
What can polyester resins be used for?(thermosetting)
- sailing boats
- car body repairs
What are the two main types of plastic?
- thermoplastics
- thermosettingplastics
