Plastics Flashcards
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
