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Polymers IGCSE D&T Cheat Sheet by

Polymers section of D&T IGCSE Edexcel part 1

PVC(Po­lyvinyl chloride )

powder granules
chemical ,weather resistance
window frames
wide range of techniques
sheet
 
cable insulation
needs UV stabil­isers to stop from fading caused by sunlight
1.47 g/cm3
 
pencil cases
   
drainage pipes

expanded polyst­yrene

beads
lightw­eight
packaging
vacuum formed
sheets
buoyant
swimming floats
thermal properties
blocks
tough
cups
difficult to recycle when it is dirty
0.96-1.04 g/cm3
fragile
sound-heat insulation
   
beads in bean bags
 

ABS

granules
high impact strength
computer casings
excellent impact strength
tube
lightw­eight
mobile phones
wide range of techniques
sheet
hard, durable
safety helmets
coloured using pigments
1.0-1.05 g/cm3
 
car bumpers
more expensive

fluoro­ela­stomer

sheet
heat
rubber
tube
chemical
gloves
1.8 g/cm3
solvent resistant

Uretha­ne/­pol­yur­ethane

liquid
high load resistance
bags
thin sheets ->c­arrier bags
sheet
wear resistant
varnish
charge on carrier bags
granules
flexible
wheels
foam
electrical resistance
furniture foam
1.2 g/cm3
 

styrofoam

sheet
lightw­eight
fast-food packaging
easily formed -school equipment
0.05 g/cm3
buoyant
audio visual equipment packaging
hot wire requires good ventil­ation
 
heat insulation
 
easily shaped

Rigid/­hig­h-d­ensity polyst­yrene

granules
lightw­eight
food packaging
easily recyclable
sheets
food safe
 
difficult to be recycled if dirty
wide range of colours
heat safe

PET

granules
lightw­eight
food packaging
excellent visual clarity
sheet
strong
bottles
pigments
1.38 g/cm3
food safe
electronic components coating
       
 

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