Metalwork - Materials - Types of Plastics
The list of the different types of Polymers is
almost endless, however here we have tried to list the most
important, and the ones that you may be the most familiar
with. Below is the list and below that are the Polymers.
Recognised Name(s) |
Full Name |
Class |
Properties |
Main Uses |
Acrylic
Perspex™
Plexiglas™ |
Polymethalmethacrylate |
Thermoplastic |
Naturally as clear as glass, can be coloured,
easier to scratch than glass, available in sheet and
rod. |
Rear lights of cars, Motorcycle windshields,
Machine guards, Shop signs, Lenses, Baths, Light
fittings, Dentures, etc. |
Polythene
Polyethylene |
Polyethylene |
Thermoplastic |
Available in two types :
LDPE
Good electrical insulator, translucent, can be
coloured, good resistance to most chemicals, fairly
flexible, softens at 85°C.
and
HDPE
Fairly stiff and hard, translucent, can be coloured,
good resistance to most chemicals, softens at 125°C
so can withstand hot liquids. |
LDPE : Food protection film, soft plastic bags, Electric
cable covering, etc.
HDPE : Plastic bottles, Crinkly plastic bags, Buckets, Bins,
Pipes, etc. |
P.V.C. |
Polyvinylchloride |
Thermoplastic |
Tough and rigid, plasticisers increase flexability,
good strangth, good resistance to chemicals and water,
transparent, can be coloured. |
Plasticised
Electrical cable insulation, Garden hoses, Fake
leather, Rain coats, Shower curtains, Car seat
upholstery, etc.
Unplasticised
Guttering, Sewerage pipes, Transparent bottles,
Chocolate box liners, Credit cards, etc. |
Nylon |
Nylon |
Thermoplastic |
Naturally white or cream, can be coloured, good
resistance to wear and temperature, good frictional
properties, strong and rigid. |
Bearings, Gears, Rollers, Curtain Rails, Ropes,
Power tool casings, Zips, Bristles for brushes,
Fishing lines, Textile fibres, etc. |
Phenol Formaldehyde
Bakelite™ |
Phenol Formaldehyde |
Thermosetting |
Good heat and electrical insulator, flame
resistant, hard and stiff, can withstand very high
temperatures. |
Kitchen pot and pan handles, Iron handles,
Ashtrays, Electrical fittings, Bottle tops, Brake
linings, Distributer caps, etc. |
Polyester Resin |
Polyester Resin |
Thermosetting |
Can be reinforced with fibres, very stiff and hard,
chemicals added to set or harden without heat or
pressure. |
Unreinforced
Ornamental castings, Buttons, Car body repair kits,
etc.
Reinforced
Boats, Lorry cabs, Trays, Storage tanks, Garden Pools,
etc. |
Polyurethanes |
Polyurethanes |
Thermosetting |
Has many different forms, flexible foams, rigid
foams, structural foams, elastomers, coatings, all
with different properties. |
Upholstery, Building insulation, Refrigerators,
Furniture manufacture, Shoe soles, Wood varnishes,
Many different car parts, Matresses, Ski boots,
Cushions, Toys, etc. |
A.B.S. |
Acrylonitrile Butadiene Styrene |
Thermoplastic |
Very tough, resists chemicals. |
Telephones, Domestic waste pipes, etc. |
Acetals |
Acetals |
Thermoplastic |
Very strong, resistant to hot water. |
Plastic jug kettles, etc. |
Polystyrene |
Polystyrene |
Thermoplastic |
Stiff, hard and brittle, can be rigid or foamed,
floats. |
Yogurt cartons, Disposable cups, Trays, Egg
cartons, Compact disk jackets, Ceiling tiles,
Packaging material, etc. |
P.T.F.E.
Teflon™ |
Polytetrafluroethylene |
Thermoplastic |
Usually whits, smooth texture. |
Non stick coatings on cooking utensils, Underside
of the space shuttle, etc. |
Polyester Film |
Polyester Film |
Thermoplastic |
Transparent, stiffer than other polymer films, not to be confused with Polyester resin. |
Audio tape, Cooking bags, etc. |
Urea Formaldehyde |
Urea Formaldehyde |
Thermosetting |
Very hard and stiff, good wear resistance, good
electrical insulator. |
Plug tops, switch covers, etc. |
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