||- CH2 - CH2 -
||Thermoplastic, translucent as a film, flexible,
permeable to hydrocarbons, alcohols and gases, resistant to X-rays
and chemical substances.
||Films, bags, hoses and tubes, insulating sleeves,
stoppers, covers, packaging, toys.
||CH3 | - CH2 - CH -
||Thermoplastic, low density, high rigidity, resistant
to X-rays, very slightly permeable to water, resistant to high
temperatures (<135 °C) and impacts.
||Household goods, packaging, moulded bodywork, batteries,
bumpers, garden furniture, syringes, vials, implants.
||C6H5 | - CH2 - CH -
||Thermoplastic, transparent as a film, non-toxic
if swallowed, optical and electrical properties, easily coloured,
resistant to X-rays, oils and greases.
||Packaging, kitchen utensils, optical diffusers,
furniture coatings, thermal insulation, toys, office accessories,
|Polyvinyl chloride (PVC)
||Cl | - CH2 - CH -
||Thermoplastic, flexible or rigid, opaque or transparent,
self-extinguishing, resistant to X-rays, acids, alkalis, oils,
greases and alcohols.
||Household goods, packaging, insulation for electrical
wiring, water pipes, flooring materials, folding shutters and
doors, luggage, fancy leather, sports and camping goods, chemical
and automotive industries.
|Polytetrafluoroethylene, PTFE (Teflon)
||- CF2 - CF2 -
||Chemically inert, non-stick, impermeable to water
and greases, excellence heat and corrosion resistance.
||Orthopaedic implants, hearing aids, seals, gaskets,
mechanical parts in corrosive environments, electrical insulation,
non-stick frying pan coatings.
|Polycarbonate, PC (Lexan, Vivak or Makrolon)
||Thermoplastic, hard and amorphous, impact-resistant,
resistant to inorganic acids, most vegetable and animal greases,
alcohols (except methanol), but not to alkaline liquors, amines,
ammonia, acetone, benzene.
||Casings for home appliances, unbreakable crockery,
machinery guards, optical equipment, bottles and vials, indoor
glazing, street furniture, packaging for food products.
|Polyethyleneterephthalate, PET (Veralite)
||Thermoplastic, fine transparency, impact resistant,
easy to drill, file, saws and cut, resistant to gamma radiation
and numerous organic chemicals but not to solvents.
||Safety guards, indoor glazing, traffic signs, food
moulds, hygiene protection, orthopaedic equipment.
|Polyvinylidenefluoride, PVDF (Erta)
||Excellent resistance to temperature, traction,
UV and atmospheric pollution, very low friction coefficient,
high chemical resistance.
||Feed chutes and hoppers in the food industry. Lubrication-free
mechanical parts in corrosive environments (bearings, bushes),
pipes, reactor vessel linings.
|Polymethylmethacrylate, PMMA (Plexiglass, Altuglass)
||CH3 | - CH2 - C - | OCOCH3
||Thermoplastic, transparent, excellent optical properties,
good ageing characteristics and weather resistance.
||Replacement for glass, illuminated signs, canopies,
viewing ports, show cases, optical fibres, dental supplies, implants,
|Polyamides, PA (Nylon)
||Example: - NH - (CH2)a - CO - where a is a positive
||Thermoplastic, excellent mechanical properties,
temperature resistance (<100°C), resistance to X-rays,
fuels, impermeable to odours and gases.
||Packaging for food products, mechanisms in water,
gas and electricity meters, fuel pipes, ski boots and bindings,
||R | - O - Si - | R Examples: R = CH3 or C6H5
||Fluid, lubricant, anti-adherent, weakly toxic.
||Fluids for electrical transformers, sealants, complex
mouldings, non-stick coatings, varnishes, waxes, burn treatments,
||Thermosetting, easy to form
||Organic glassware, crockery
||- R - C - O - R' - O - C - R - || || O O where
R and R' are two atomic groups
||Thermosetting, transparent, mechanical properties
at high temperature, electrical properties, impact resistant,
easy to use.
||Fabrics, packaging, bottles, switches, connectors
and fuses for high voltage circuits, implants.
||Thermosetting, extremely hard.
||Use in layers: Bakelite, setting varnishes.