Plastics Flashcards
Three types of plastic
Thermo plastic
Thermosetting plastic
Elastomers
What are the 6 thermoplastics
LDPE
HDPE
Polypropylene
Acrylic
ABS
PVC
UPVC
PET
What are the 3 thermoset polymers?
Urea formaldehyde
Polyester resin
Epoxy resin
What examples of elastomers are there?
Rubber
Silicone
Neoprene
What are the features of acrylic making it suitable for car light casings and CNC laser cut items?
Tough (durability)
Hard (maintains high quality surface finish)
Available in transparent and translucent forms (variation of options and allows varying amounts of light through)
Uses of acrylic
Lighting units
Baths
CNC laser cut items
What is LDPE used for
Squeezy bottles
Carrier bags
Bin liners
Cling film
Why is LDPE suitable for packaging?
Very tough (withstand impact so unlikely to break making the things inside more protected)
Chemical resistance (will not react to food or substances inside)
Weatherproof (better protected items)
Low level rigidity (flexible)
Translucent (enables consumers to see within lackaging
What can HDPE be used for?
Chemical drums
Long life carrier bags
Kitchenware
Buckets
Bowls
What makes HDPE suitable for kitchenware?
Weatherproof (protects things within it)
Tough (unlikely to rip or break under impact)
Good chemical resistance (will not react to food when eating)
What can PET be used for?
Single use drink bottles
Shampoo bottles
Food packaging
What makes PET suitable for single use drinks bottles?
Hard (unlikely to scratch and cause leakage)
Tough (unlikely to deform under impact making it unsuitable for purpose)
Good chemical resistance
What can PVC be used for?
Hose pipes
Medical grade tubing
Inflatable products
Cable insultaion
What makes PVC suitable for medical grade tubing?
Chemical resistance (will not deform when present to chemicals)
Flexible (ability to bend around edges and adapt)
Transparent (can see within it to ensure working correctly)
Tough (unlikely to deform under impact)
Difference between PVC and uPVC
PVC contains plasticiser additives making it more flexible