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product design > polymers > Flashcards

polymers Flashcards

1
Q

polymer production

A

refinery gas = cool 25
gasoline petrol
naphtha
kerosene
diesel oil
fuel oil
residue = hot 350

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2
Q

LDPE
thermoplastics

A

very tough
good chemical resistance
weatherproof
65 degree safe working temp

carrier bags

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3
Q

HDPE
thermoplastics

A

weatherproof
tough
chemical resistance
65 degrees safe working temp

toys
buckets
bowls

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4
Q

polypropylene
thermoplastics

A

chemical resistance
good fatigue resistance
100 degrees safe working temp

rope
folders

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5
Q

HIPS
thermoplastics

A

hard
rigid
tough
70 degree safe working temp

yoghurt pots
single use drink cups

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6
Q

ABS
thermoplastics

A

extremely tough
hard
80 degree safe working temp

telephone handsets
calculator

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7
Q

PMMA
thermoplastics

A

tough
hard
good chemical resistance
95 degrees safe working temp

baths

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8
Q

NYLON
thermoplastics

A

tough
corrosion resistant
150 degree safe working temp

cable ties

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9
Q

uPVC
thermoplastics

A

rigid
tough
good weathering resistance
fire retardant
95 degree safe working temp

window frames

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10
Q

PVC
thermoplastics

A

tough
flexible weathering resistance
95 degree safe working temp

hose pipes

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11
Q

urea formaldehyde
thermoset

A

hard
heat resistant
electrical insulator

electrical fittings

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12
Q

melamine formaldehyde
thermoset

A

hard
heat resisistant

picnic ware

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13
Q

polyester resin
thermoset

A

heat resistant
brittle
castings used in lay up processes
boat hulls

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14
Q

epoxy resin
thermoset

A

rigid
clear
hard
tough

adhesives
electrical components

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15
Q

natural rubber
elastomers

A

high tensile strength
low elongation
electrical insulator

tyres
hoses

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16
Q

butadiene rubber
elastomer

A

excellent wear resistance
electrical insulator

shoe soles
conveyer belts

17
Q

neoprene
elastomer

A

thermal resistance
weather resistance
electrical insulator

wetsuits
laptop cases

18
Q

silicone
elastomer

A

flexible
poor abrasion

ice cube trays
cooking utensils

19
Q

natural bio polymers

A

made from natural materials such as cellulose and starch

20
Q

synthetic bio polymers

A

made from renewable resources but chemically engineered to breakdown quicker

21
Q

oxydegradeable polymer

A

fine powder with exposure to oxygen degraded by microorganisms
programme dregrade

carrier bags

22
Q

photodegradable polymer

A

bonds broken with exposure to UV light

used in agriculture
act as mulch

23
Q

hydrodegradeable polymer

A

breaks down with exposure to water and micro organisms
degrade quicker than oxy

liquid detergent
chocolate box trays

24
Q

implications of bio polymers

A
  • produce methane gas when they decompose in landfill
  • high temps to decompose , toxic residues
  • natural bio needs land to grow crops
  • natural can be formed from GM crops
  • can’t be recycled
25
Q

corn starch polymer
classification

A

natural bio polymer
high starch vegetables

straws
vending cups

26
Q

potatopak
classification

A

natural
potato starch

single use items such as bowls and cutlery

27
Q

biopol
classification

A

natural
bacteria grown in cultures

films
carrier bags

28
Q

PLA
classification

A

synthetic
corn kennels or cane sugar
fermented to produce lactic acid
then synthesised

plant pots

29
Q

PHA
classification

A

natural
bacteria grown in cultures

screws and bone plates

30
Q

PHA
classification

A

natural
bacteria grown in cultures

screws and bone plates

31
Q

lactide
classification

A

synthetic
fully compostivle
water soluble

slow release medication

32
Q

glyocolide
classification

A

synthetic
fully compostable

bin bags

product design (9 decks)

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