PLASTIC Flashcards
what is plastic made of
oil
two major types of plastic
thermosetting
thermoplastic
properties of thermosetting plastics
can’t be reshaped
retain form even in extreme heat
difficult to recycle
properties of thermoplastics
can be reshaped
can be melted over and over again
can be recycled
type of thermosetting plastic
urea formaldehyde
polyester resin glue
urea formaldehyde properties
used for electrical casings
toxic fumes given off if heated
stiff/hard/brittle
scratch resistant
stain resistant
high tensile strength
Polyester resin glue properties
very good resistance to water
hard once dried
brittle
good heat and chemical resistance
types of thermoplastic
acrylic
polythene
PET
polyvinyl chloride (pvc)
high impact polystyrene (HIPS)
acrylonitrile butadienestyrene (ABS)
acrylic properties
lightweight
durable
can be recycled
comes in range of colours
scratches easily
poor chemical resistance
polythene properties
tough
resistant to chemicals
soft and flexible
good electrical insulator
can be recycled but not easily
most ends up in land fills
objects made from polyethene
plastic bags and shampoo bottles
PET properties
water proof
used to make water bottles
polyvinyl chloride (pvc) properties
good chemical resistance
durable
lightweight
tough
polyvinyl chloride (pvc) uses
pipes
guttering
bottles
window frames
high impact polystyrene (HIPS) properties
tough
high impact strength
rigid - wont bend
good electrical insulator
available in wide range of colours
