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Everything > 1.2 Polymers > Flashcards

1.2 Polymers Flashcards

1
Q

What are the 3 steps for polymers

A

Fractional distillation, cracking, polycondensation/polymerisation

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1
Q

Why are polymers considered self finishing

A

As they can be pigmented during the manufacturing

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2
Q

What are polymers susceptible to

A

UV light

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3
Q

What are the 6 thermoplastics

A

PP, Acrylic, HIPS/ABS, Nylon, LD/HDPE, PVC/uPVC

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4
Q

What are thermoplastics

A

Polymers that can be softened and are formed at relatively low temperatures

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4
Q

What is a use of Acrylic

A

Signs

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4
Q

What is a use of PP

A

Hinged lids

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5
Q

What is a use of ABS/HIPS

A

LEGO

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6
Q

What is a use of nylon

A

cable ties

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7
Q

What is a use of PVC/uPVC

A

guttering

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7
Q

What is a use of LD/HDPE

A

Bin liners

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8
Q

What is the property of PP

A

Good fatigue resistance

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9
Q

What is the property of Acrylic

A

Very UV stable

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10
Q

What is the property of HIPS/ABS

A

Very tough

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11
Q

What is the property of Nylon

A

High temp resistance and low friction

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12
Q

What is the property of HD/LDPE

A

Cheap

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13
Q

What is the property of PVC/uPVC

A

Good weathering and chemical resistance

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14
Q

What is a use of Epoxy

A

resin in CFRP

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14
Q

What is a use of UF

15
Q

What are the 4 thermosets

A

Epoxy, UF, MF, polyester resin

15
Q

What is a use of MF

A

worksurfaces

16
Q

What is a use of polyester resin

A

resin in GFRP

16
Q

What is a property of MF

17
Q

What is a property of polyester resin

18
Q

What is a property of epoxy

19
Q

What is a property of UF

A

good electrical insulator

20
Q

What are the 4 elastomers

A

Neoprene, silicone, natural rubber, butadiene rubber

21
Q

What is a use of Neoprene

A

wetsuits, laptopcases

22
Q

What is a use of silicone

A

sealant, ice cube cases

22
Q

What is a use of natural rubber

23
Q

What is a use of butadiene rubber

A

shoe soles

24
Q

What is a property of neoprene

A

temp and impact resistant

25
Q

What is a property of silicone

A

extreme temperatures

26
Q

What is a property of natural rubber

A

cold resistance

27
Q

What is a property of butadiene

A

wear resistant

27
Q

What are the 4 biopols

A

PLA, Glycolide, PHB, potatopak

28
Q

What is a use of PLA

A

3D printing

29
Q

What is a use of Glycolide

A

films and wraps

30
Q

What is a use of PHB

31
Q

What is a use of potatopak

A

food trays

32
Q

What are the 2 synthetic biopols

A

PLA, Glycolide

33
Q

What biopol breaks down with water rather than microbe action

33
Q

What are the 3 +ves of biopols

A

Can use natural resources, can reduce landfill, can be grown

33
Q

What are the 2 natural biopols

A

PHB, potatopak

34
Q

What are the 5 -ves of biopols

A

Can promote a throw away culture, need space to be grown, don’t easily degrade, can’t be recycled, can produce methane

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