Topic 4.2D: Plastic Flashcards
Thermoplastics
linear chain molecules with weak secondary bonds between chains, can be reformed
thermoset plastics
linear chain molecules with strong primary bonds between the adjacent polymer chains
Polypropylene (thermo)
easily formed, used for: shopping bags, packaging, bottle caps, straws
Polyethylene (PE): High density (HPDE) and low density (LDPE) (thermo)
HPDE: detergent and shampoo bottles
LPDE: plastic wrap
High impact polystrene (HIPS) (thermo)
easy to machine and shape, impact resistant, packaging, disposable cutlery
acrylonitrile butadiene styrene (ABS) (thermo)
low cost, heat resistant, dimensional stability, legos
Polyethylene terephthalate (PET) (thermo)
light weight, shatter resistant. used for: water bottles, consumer product containers, make-up containers
Urea-formaldehyde (thermoset)
electrical cases, high-heat contexts. High tensile strength
Polyurethane (PU) (thermoset)
Wheels and castors. High abrasion resistance
Melamine Resin (thermoset)
kitchen worktops, kitchenware
Epoxy resin (thermoset)
general purpose adhesive. tough, high compressive strength