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Design Technology > Plastics > Flashcards

Plastics Flashcards

1
Q

Name the thermoplastics (10).

A 
High Impact Polystyrene (HIPS)
Polypropylene (PP)
Polycarbonate (PC)
Polystyrene (PS) - Expanded Polystyrene
High Density Polyethylene (HDPE)
Low Density Polyethylene (LDPE)
Polyvinyl Chloride (unplasticised - PVC)
Polyvinyl Chloride (plasticised - uPVC)
Polyethylene Terephthalate (PET)
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2
Q

Name the thermosets (4).

A

Melamine Formaldehyde
Epoxy Resins
Polyester Resins
Urea Formaldehyde

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3
Q

What the properties of HIPS? (3)

A

Impact resistant
Stiff
Lightweight

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4
Q

What are the uses of HIPS? (2)

A

Toys

Fridge linings

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5
Q

What are the properties of PP? (3)

A

Food safe
Chemical resistant
Lightweight

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6
Q

What are the uses of PP? (2)

A

Food containers

Rope

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7
Q

What are the properties of PC? (2)

A

VERY tough

Chemical resistant

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8
Q

What are the uses of PC? (2)

A

Protective shields

Hairdryer bodies

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9
Q

What are the properties of PS? (3)

A

Not impact resistant
Lightweight
Rigid

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10
Q

What are the uses of PS? (2)

A

Packaging

Disposable plates/cups/cutlery

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11
Q

What are the properties of expanded polystyrene? (3)

A

Lightweight
Float
Insulator

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12
Q

What are the uses of expanded polystyrene? (2)

A

Disposable cups

Insulation

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13
Q

What are the properties of HDPE? (3)

A

High density
Stiff
Chemical resistant

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14
Q

What are the uses of HDPE? (2)

A

Crates

Buckets

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15
Q

What are the properties of LDPE? (3)

A

Low density
Flexible
Chemical Resistant

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16
Q

What are the uses of LDPE? (2)

A

Toys

Detergent bottles

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17
Q

What are the properties of uPVC? (3)

A

Hard
Tough
Weather and chemical resistant

18
Q

What are the uses of uPVC? (3)

A

Pipes
Buttering
Window frames

19
Q

What are the properties of PVC? (3)

A

Tough
Flexible
Weather and chemical resistant

20
Q

What are the uses of PVC? (2)

A

Cable insulation

Hose pipes

21
Q

What are the properties of PET? (1)

A

Chemical resistant

22
Q

What are the uses for PET? (3)

A

Clothing
Drinks bottles
Electrical plugs

23
Q

What are the properties of melamine formaldehyde? (2)

A

Scratch resistant

Strong

24
Q

What are the uses of melamine formaldehyde? (2)

A

Tableware

Laminates

25
Q

What are the properties of epoxy resins when mixed with fibres? (2)

A

Strong

Weather and chemical resistant

26
Q

What are the uses of epoxy resins? (2)

A

Glue

Surface coating

27
Q

What are the properties of polyester resins when mixed with fibres? (2)

A

Brittle

Heat and chemical resistant

28
Q

What are the uses of polyester resins? (1)

A

Glass-reinforced-plastic

29
Q

What are the properties of urea formaldehyde? (3)

A

Brittle
Strong
Heat resistant

30
Q

What are the uses of urea formaldehyde? (2)

A

Glue

Electrical fittings

31
Q

What additives can be added to polymers? (5)

A 
Filler
Flame-retardant
Anti-static agent
Plasticiser
Stabiliser
32
Q

What is a filler?

A

An additive which bulks out the polymer granules/powder. Eg: sawdust.

33
Q

What is a flame-retardant?

A

An additive which makes a chemical reaction on the surface of the plastic product when it starts to combust, this stifles the combustion. Eg: used in polymer foam in seat cushions.

34
Q

What is an anti-static agent?

A

An additive which reduces the effects of static charges in synthetic materials.

35
Q

What is a plasticiser?

A

An additive which makes the polymer product less brittle and lowers the melting temperature.

36
Q

What is a stabiliser?

A

An additive which protects the polymer against the effects of UV (sunlight) exposure, like fading and breaking down. Eg: in window and door uPVC.

37
Q

What are biodegradable plastics?

A

Plastics that can break down all by themselves with warmth, dampness, contact with micro-organisms and time.

38
Q

What is bio-batch?

A

An additive which shortens the degrading time for oil-based plastics to less than 5 years

39
Q

Name applications of biodegradable plastics (6).

A 
Shopping bags
Food trays
Drinks bottles
Disposable bowls
Disposable cutlery
Disposable gloves
40
Q

What are water-soluble polymers?

A

Polymers that degrade in water. Eg: washing detergent pouches.

Design Technology (1 decks)

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