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Product Design > Polymers > Flashcards

Polymers Flashcards

1
Q

CA

Cellulose acetate

A 
THERMOPLASTIC
Tough and rigid
Lightweight
Good strength
Transparent
Non flammable

Uses- photographic film, handles for cutlery, cupboard door knobs, glasses frames

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2
Q

Nylon

Polyamide

A 
THERMOPLASTIC
Hard
Tough
Wear resistant
Low coefficient of friction

Uses- bearings, gears, curtain rail fittings, clothing

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3
Q

PMMA

Acrylic

A 
THERMOPLASTIC
Food safe 
Tough
Hard
Durable 
Easily machined

Uses- light units, illuminated signs, lenses for car lights

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4
Q

PP

Polypropylene

A 
THERMOPLASTIC
Light weight 
Food safe
Good impact resistance even @ low temp
Good chemical resistance

Uses- kitchen products i.e. Food containers, medical equipment, string and rope

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5
Q

HIPs

High impact polystyrene

A 
THERMOPLASTIC
Good impact resistance
Good strength & stiffness
Lightweight 
Injection mouldable -or vacuum formed

Uses- toys, refrigerator linings

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6
Q

PS

Polystyrene

A 
THERMOPLASTIC
Lightweight 
Rigid
Colourless
Low impact strength

Uses- packaging, disposable cups n containers

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7
Q

PS

Expanded polystyrene

A 
THERMOPLASTIC
Floats
Lightweight
Good sound and heat insulator
Low strength

Uses- packaging, disposable cups, sound and heat insulation

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8
Q

LDPE

Low density polyethylene

A

THERMOPLASTIC
Low density
Low stiffness and rigidity
Good chemical resistance

Uses- detergent bottles, toys, carrier bags

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9
Q

HDPE

High density polyethylene

A

THERMOPLASTIC
High density
Good stiffness
Good chemical resistance

Uses- crates, bottles for drinks, buckets and bowls

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10
Q

UPVC

Polyvinyl chloride

A 
THERMOPLASTIC
Good chemical resistance (&sunlight & dust)
Good resistance to weathering 
Rigid, hard, tough
Lightweight
Can be coloured
Thermal insulating

Uses- pipes, guttering, bottles,window frames

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11
Q

PVC
(Unplasticised, flexible)
Polyvinyl chloride

A 
THERMOPLASTIC
Good chemical resistance 
Good resistance to weathering 
Rigid,hard,tough
Lightweight
Can be coloured

Uses- flexible hose e.g. Hose pipes, cable insulation, insulation

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12
Q

PET

Polyethylene terephthalate

A

THERMOPLASTIC
Moderate chemical resistance
Insulating

Uses- fibres used to make a wide range of clothing, blow moulded –> bottles for beer and soft drinks, electrical plug sockets, audio and video tapes, insulation tapes

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13
Q

PC

Polycarbonate

A

THERMOPLASTIC
Good chemical resistance
Expensive
Very tough

Uses- protective shields e.g. Safety glasses and helmets, hairdryer bodies, telephone parts, vandal proof streetlight covers

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14
Q

Epoxy resins

A

THERMOSET
High strength when reinforced with fibres (GRP)
Good chemical and wear resistance

Uses- surface coating, encapsulating electronic components, adhesives (araldite)

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15
Q

Melamine formaldehyde

A 
THERMOSET
Rigid 
Good strength and hardness 
Scratch resistant
Can be coloured
Various size and thickness

Uses- tableware, decorative laminates for work surfaces

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16
Q

Polyester resins

A 
THERMOSET
Rigid
Brittle
Good heat and Chemical resistance
Strength

Uses- casting, glass reinforced plastic- e.g. Boat hills and car body parts

17
Q

Urea formaldehyde

A 
THERMOSET
Rigid 
Hard, good strength 
Brittle
Heat resistance 
Good electrical insulator
18
Q

Neoprene

Polychloroprene

A

ELASTOMER
Family of synthesis rubbers made by polymerisation of chloroprene
Good chemical stability
Maintains flexibility over wide temp range
Resists degradation
Closed cell form is waterproof & £££
Open cell firm can be breathable

Uses- laptop sleeves, orthopaedic braces (wrist/knee), electrical insulator, automotive fan belts, gloves and face masks

19
Q

ABS

Acrylonitile Butadiene Styrene

A 
THERMOPLASTIC 
High impact strength
Good toughness 
Scratch resistant
Lightweight 
Durable

Uses- kitchen products, mobile telephone case, PC monitor case, helmets, toys (LEGO), car parts

Product Design (7 decks)

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