Flashcards
Materials - Plastics
Cards in this deck (13)
- 1PETPolyethylene terephthalate
Good alcohol and oil barrier
Chemical resistant
High impact resistance and tensile strength.
Can discolour
Must be treated before being foodsafe (else taste problems).
Used in fizzy drinks bottles. - 2PVCPolyvinyl Chloride
Good chemical and weather resistance
Stiff, tough, hard and lightweight
Can become brittle over time from UV exposure.
Wiring insulation, pipes and guttering, floor covering. - 3Polypropylene/PPLight and hard.
Chemical and impact resistant.
Degrades in UV light.
Oxidation when manufacturing problem.
Carpets, kitchenware, syringes. - 4Expanded Polystyrene/PSBuoyant, lightweight, good insulator.
Crumbles and breaks.
Ignites easily.
Packaging, insulation, displays. - 5Compressed Polystyrene/PSLight, hard, stiff.
Low impact strength.
Weak and ignites easily.
CD casings, fridge linings, water tanks. - 6ABSAcrylonitrile butadiene styrene.
Chemical resistant, hard and tough.
Degrades under UV light.
Smooth shiny surface finish.
Mobile phones, safety helmets. - 7Epoxy ResinE.g. Arildite.
Corrosion and electrical resistant.
Good bond qualities.
Suspected health problems, irritant/allergic reaction.
Resin + hardener/catalyst.
Adhesives, paints/coatings, electronics. - 8Urea FormaldehydeStrong, hard, brittle.
Heat resistant.
Emits toxic vapours during manufacture.
Electrical fittings, domestic appliances. - 9Polyester resinGood electrical insulator and heat resistant.
Is brittle and can crack.
GFRP boats/cars
Garden furniture. - 10PolycarbonateGood electrical resistance, extremely good heat resistance.
Tough and very strong.
Smooth and transparent.
Riot shields, car headlamp lenses, baby feeding bottles, CDs. - 11AcrylicThermoplastic.
Durable utilised properly.
Good insulator.
Stiff and brittle - breaks, scratches and splinters easily.
Used in lighting, CD cases, car lights, baths. - 12HDPEHigh Density Polyethylene
CHEMICAL and impact resistant.
Good electrical insulator.
More flexible than acrylic but can break under stress.
Colour fades over time.
Used in water tanks and pipes, buckets, bowls. - 13LDPEThermoplastic.
Good electrical insulator.
Flexible (but can break under stress) and chemical resistant.
Colour fades over time.
Used in washing up liquid bottles, dustbin sacks, cable insulation, packaging film.
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- A-Levels Resistant Materials (Materials) Flashcards on Materials - Plastics, created by Alec Stevens on 02/05/2013.
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- Alec Stevens
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