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design technology > Polymers > Flashcards

Polymers Flashcards

1
Q

polymer stock forms

A

sheet
granules
powder
film
rod
foam

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2
Q

what is a thermoplastic

A

polymer that can be reheated and reshaped; can be recycled

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3
Q

what is a thermoset polymer

A

when heated, polymer goes through a chemical change that cannot be undone. they cannot be recycled

they are designed for long term use hence the rigid bonds they form

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4
Q

what is an elastomer

A

at room temp can be deformed under pressure and then without the pressure can go back to its original shape

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5
Q

polymers are made from

A
  • crude oil and take many years to degrade
  • sustainable/ natural resources biopolymers
  • recycled polymers
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6
Q

how many thermoset plastics are there

A

4

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7
Q

what type of plastic is Urea formaldehyde (UF)

A

thermoset

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8
Q

Urea Formaldehyde (UF) characteristics

A
  • hard
  • brittle
  • good insulator
  • heat resistant
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9
Q

UF uses

A
  • electrical casing eg remotes, sockets
  • adhesives
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10
Q

Melamine Formaldehyde (MF) characteristics

A
  • hard
  • tough
  • heat resistant
  • food safe
  • chemical resistant
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11
Q

UF melting point

A

80

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12
Q

MF melting point

A

130

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13
Q

what type of plastic is Melamine Formaldehyde (MF)

A

thermoset

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14
Q

MF uses

A

food plates
picnic ware
buttons

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15
Q

what type of plastic is Polyester resin

A

thermoset

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16
Q

Polyester resin characterstics

A
  • heat resistant
  • chemical resistant
  • brittle
  • dries hard and tough
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17
Q

polyester resin uses

A
  • reinforce and strengthen other surfaces like car parts
  • used in lay up processes
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18
Q

polyester resin melting point

A

95

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19
Q

what type of plastic is epoxy resin

A

thermoset

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20
Q

epoxy resin characteristics

A
  • hard
  • heat resistant
  • rigid
  • chemical resistant
  • tough
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21
Q

epoxy resin uses

A
  • adhesives
  • aerospace applications
  • used in lay up process
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22
Q

epoxy resin melting point

A

80-200

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23
Q

natural rubber polymer type

A

elastomer

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24
Q

natural rubber characteristics

A
  • high tensile strength
  • low elongation
  • hard
  • tough
  • electrical insulator
  • good thermal resistance against friction
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25
Q

natural rubber uses

A
  • car tyres
  • tubes
  • hoses
  • balloons
  • footwear
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26
Q

Butadiene rubber (BR) polymer type

A

elastomer

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27
Q

butadiene rubber (BR) characteristics

A
  • tough
  • good wear resistance against friction
  • good thermal resistance against friction
  • electrical insulator
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28
Q

butadiene rubber (BR) uses

A

tyres
shoe soles
conveyor belts
water hoses
toys

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29
Q

neoprene polymer type

A
  • elastomer
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30
Q

neoprene characteristics

A

thermal resistant
oil/ chemical resistant
weather resistant
tough
electric insulator
good abrasion resistance

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31
Q

neoprene uses

A

wetsuits
laptop cases
hose covers
industrial wire insulation

32
Q

silicone polymer type

33
Q

silicone characteristics

A

good flexibility at low temperatures
poor abrasion resistance
good thermal resistance
good weather resistance
good lubricating qualities
electrical insulator

34
Q

silicone uses

A

flexible ice tray
bakeware
cooking utensiles
lubricants

35
Q

what type of polymer is LDPE

A

thermoplastic

36
Q

LDPE characteristics

A
  • lightweight
  • weather resistant
  • tough
  • ductile
  • tough
  • range of colours
37
Q

LDPE Resin code number

38
Q

LDPE melting point

39
Q

LDPE uses

A

bin liners
carrier bags
cling film

40
Q

what type of polymer is HDPE

A

thermoplastic

41
Q

HDPE characteristics

A
  • chemical resistance
  • tough
  • weather resistance
42
Q

HDPE resin code

43
Q

HDPE uses

A

chemical drums
jerry cans
buckets
detergent bottles

44
Q

HDPE melting point

45
Q

what type of polymer is polypropylene

A

thermoplastic

46
Q

PP characteristics

A
  • good fatigue (hinge resistance)
  • tough
  • weather proof
  • good chemical resistance
47
Q

PP Resin code

48
Q

PP uses

A
  • plastic hinges bottle lids
  • medical syringes
  • food storage
49
Q

PP melting point

50
Q

what type of polymer is HIPS

A

thermoplastic

51
Q

HIPS characteristics

A
  • hard
  • tough
  • rigid
52
Q

HIPS uses

A
  • single use plastic cup
  • yoghurt pots
  • toilet seats
53
Q

HIPS melting point

54
Q

ABS polymer type

A

thermoplastic

55
Q

ABS Characteristics

A
  • hard
  • tough
  • electrical insulator
56
Q

ABS uses

A
  • hard hats
  • electrical appliance casing eg fridge
57
Q

ABS melting point

58
Q

PMMA polymer type

A

thermoplastic

59
Q

PMMA Characteristics

A
  • hard
  • tough
  • chemical resistant
60
Q

PMMA is more commonly known as

61
Q

PMMA uses

A

acrylic
car light casing
baths

62
Q

PMMA melting point

63
Q

Nylon polymer type

A

thermoplastic

64
Q

nylon characteristics

A

corrosion resistant
tough
hard
low friction

65
Q

nylon uses

A

bags
clothing
plastic screws

66
Q

nylon melting point

67
Q

PVC polymer type

A

thermoplastic

68
Q

PVC characteristics

A
  • tough
  • flexible
  • good weathering resistance
  • good chemical resistance
69
Q

PVC uses

A

inflatables
hoses
imitation leather
medical grade tubing

70
Q

PVC resin code number

71
Q

PVC melting point

72
Q

uPVC polymer type

A

thermoplastic

73
Q

uPVC characteristics

A

tough
hard
rigid
good weathering resistance
good chemical resistance

74
Q

uPVC uses

A

bank cards
pipes
window frame

75
Q

uPVC melting point

76
Q

what is the resin identification code used for

A

thermoplastics, helps recycle plastics more efficiently

77
Q

name the 7 resin id codes

A

1 PETE
2 HDPE
3 PVC
4 LDPE
5 PP
6 PS
7 OTHER

design technology (15 decks)

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