1.2 Polymers

Question 1

What are the 3 steps for polymers

Answer 1

Fractional distillation, cracking, polycondensation/polymerisation

Question 1

Why are polymers considered self finishing

Answer 1

As they can be pigmented during the manufacturing

Question 2

What are polymers susceptible to

Answer 2

UV light

Question 3

What are the 6 thermoplastics

Answer 3

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

Question 4

What are thermoplastics

Answer 4

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

Question 4

What is a use of Acrylic

Answer 4

Signs

Question 4

What is a use of PP

Answer 4

Hinged lids

Question 5

What is a use of ABS/HIPS

Answer 5

LEGO

Question 6

What is a use of nylon

Answer 6

cable ties

Question 7

What is a use of PVC/uPVC

Answer 7

guttering

Question 7

What is a use of LD/HDPE

Answer 7

Bin liners

Question 8

What is the property of PP

Answer 8

Good fatigue resistance

Question 9

What is the property of Acrylic

Answer 9

Very UV stable

Question 10

What is the property of HIPS/ABS

Answer 10

Very tough

Question 11

What is the property of Nylon

Answer 11

High temp resistance and low friction

Question 12

What is the property of HD/LDPE

Answer 12

Cheap

Question 13

What is the property of PVC/uPVC

Answer 13

Good weathering and chemical resistance

Question 14

What is a use of Epoxy

Answer 14

resin in CFRP

Question 14

What is a use of UF

Answer 14

plugs

Question 15

What are the 4 thermosets

Answer 15

Epoxy, UF, MF, polyester resin

Question 15

What is a use of MF

Answer 15

worksurfaces

Question 16

What is a use of polyester resin

Answer 16

resin in GFRP

Question 16

What is a property of MF

Answer 16

food safe

Question 17

What is a property of polyester resin

Answer 17

brittle

Question 18

What is a property of epoxy

Answer 18

tough

Question 19

What is a property of UF

Answer 19

good electrical insulator

Question 20

What are the 4 elastomers

Answer 20

Neoprene, silicone, natural rubber, butadiene rubber

Question 21

What is a use of Neoprene

Answer 21

wetsuits, laptopcases

Question 22

What is a use of silicone

Answer 22

sealant, ice cube cases

Question 22

What is a use of natural rubber

Answer 22

tyres

Question 23

What is a use of butadiene rubber

Answer 23

shoe soles

Question 24

What is a property of neoprene

Answer 24

temp and impact resistant

Question 25

What is a property of silicone

Answer 25

extreme temperatures

Question 26

What is a property of natural rubber

Answer 26

cold resistance

Question 27

What is a property of butadiene

Answer 27

wear resistant

Question 27

What are the 4 biopols

Answer 27

PLA, Glycolide, PHB, potatopak

Question 28

What is a use of PLA

Answer 28

3D printing

Question 29

What is a use of Glycolide

Answer 29

films and wraps

Question 30

What is a use of PHB

Answer 30

stiches

Question 31

What is a use of potatopak

Answer 31

food trays

Question 32

What are the 2 synthetic biopols

Answer 32

PLA, Glycolide

Question 33

What biopol breaks down with water rather than microbe action

Answer 33

glycolide

Question 33

What are the 3 +ves of biopols

Answer 33

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

Question 33

What are the 2 natural biopols

Answer 33

PHB, potatopak

Question 34

What are the 5 -ves of biopols

Answer 34

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