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FINAL DESIGN > Polymers > Flashcards

Polymers Flashcards

1
Q

what are tehrmosettign polymers

A

set with heat
permanaently

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2
Q

what are themro polymers

A

set with heat
btu can be reshapes

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3
Q

processes polymers (themro) useful for

A

inj moulding
vaccum forming
blow moulding

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4
Q

whats good ab thermo polymers

A

can be recyled

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5
Q

what has a higher working temp themro or thermo set

A

thermo set

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6
Q

what does working temp mean

A

temp needed to melt and use and shit

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7
Q

properities of LDPE

A

Very tough
Chem reist
weather proof
low rigidity
waxy

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8
Q

can ldpe and hdpe be trnaslucent

A

yes

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9
Q

uses of ldpe

A

squeezy detergent bottles
bin bags
food film wrap
toys

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10
Q

proeprites of hdpe

A

Weather proof
tough
weatehr reistance
chem restance
stiiff
hard

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11
Q

uses of HDPE

A

bleach bottles
chemcial drums
long lfie bas

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12
Q

uses of polyseterene

A

dispsoable cups

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13
Q

proeprities of poly prop

A

chem reisannce
tough
good fatigue res
hard
stiff

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14
Q

what si pp when thin

A

flexible

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15
Q

uses of pp

A

child seat
integral hinges
food containers
geenral plastic shit liekly to be pp

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16
Q

proeprities of HIPS

A

hard
rigid
tough

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17
Q

uses of HIPS

A

yoghurt poys
singel use drink cups
toilet seats

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18
Q

colorus hips available in

A

coloure
dtranslucent

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19
Q

proeprities of ABS

A

tough
hard
high impacy resyamce

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20
Q

uses of ABS

A

phone hand sets
suitcases
remote contorls
bumbeprs
hoovers

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21
Q

proeprities of PET

A

hard
transluscen
good impac resiatnce

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22
Q

uses of PET

A

water bottles
chcolaet box liners

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23
Q

proeprties of uPVC

A

rigid
opaquw
tough
hard
good chem reistance

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24
Q

uses of uPVC

A

window frame
gutters
water sevrice peipes
bank cards

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25
Q

proeprites of PVC

A

transulcent
tough
flexbible
weatehr and chem reistance

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26
Q

uses of PVC

A

hose pipes
cable isnualtion
inflatable products
seat coverings

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27
Q

what is PMMA

A

acryclics

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28
Q

uses of acryclic

A

car light units
alt to glass

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29
Q

proeprities of pmma

A

clear
glossy
rigidity
hard
uv reistacne
excellent opitcal proeprties
good chem resitacne

30
Q

when abs used

A

when products subject to impact and weight aint matter

eg hoover plugs - dragged alogn

31
Q

what polymer for cabel insualtion

A

uPVC

32
Q

what material used for stickers and shit

A

uPVC (vinyl)

33
Q

what may be added to PVC to betetr it

A

heat and uv stabilsiers

34
Q

types of polysterene

A

GPPS
HIPS
EPS

35
Q

proeprities of ps ingeneal

A

hard
rigid
low shrinkage
moulds well
high detail

36
Q

uses of polysterene in genral

A

toys
ridgid packagign
fridge rtays
boxes

37
Q

when i talk ab polysteerne in general which is ti

A

GPPS

38
Q

HIPS comapred to GPPS

A

simialr machinability
7 tiems impact strength

39
Q

when is HIPS most used

A

when impact strenght
machianailtiy
low cost required

40
Q

what is used pre production and modelling generally

A

HIPS

41
Q

what is used to proetct packages and delicate items

A

EPS

42
Q

pros of EPS

A

very lightweight
98% air
easy to model

43
Q

brand name of PMMA

A

perspex

44
Q

what is one of teh strongets plastic

A

PET

45
Q

what si polyamide

A

wool
silks
nylons

46
Q

proeprties fo UF

A

hard
heat restant
good elecitical insualtor
brtille

47
Q

when is UF used

A

when in pwoder form
mixed with water
as wood glue

48
Q

what does UF combine

A

good insualtion at low cost

49
Q

uses of UF

A

electricla fittings
adhesives

50
Q

properties of polyseter resin

A

rigid
heat resiatnt
chem reistant
brittle

51
Q

uses of polyster resin

A

catsigns
lay up process for GRP nad CFRP

52
Q

proeprities of epoxy resin

A

rigid
hard
tough
chemical reistan

53
Q

which type of epoxy resin has two activator tubes

A

high meltign point

54
Q

uses of epoxy resin

A

adhesive
surface coating
holding electricla comp in palce

55
Q

prperites fo phenal formalyhyde

A

opawque
dark in colour

56
Q

uses of PF

A

handles for suace pands and shi

57
Q

meleamine formaludge

A

multi coloure
opaque

58
Q

uses of mf

A

cups
plates
kitchen surfaces

59
Q

why is PF used over UF

A

hiher heat resiatcne

60
Q

what do PF finishes and surcaes give

A

hard wearing
heat and water res

61
Q

what finish does epoxy resin give

A

hard wearign
durable

62
Q

how epoxy powder coating work

A

resin and hardner sprayed onto shit

63
Q

is epoxy resin a good isnualtor

A

yes

64
Q

name tehrmosettign polyemrs

A

epoxy resin
UF
MF
PF
polyster resin

65
Q

without filler or reinforceemnt what si polysteer resin

A

very vrittle

66
Q

benefits fo polsyter resin

A

easy to hadnle
low costs
good chem and electricla reistance and proeprties

67
Q

main pros of polymers

A

impact reist
chem reitatn

68
Q

what are ms=ost tehrmo settign polymers

A

brtiile in tension
stonger in compression

69
Q

enviro friendly option instead ofppolymers

A

biopolymers

70
Q

issues with using polymers

A

use of crude oil
energy
pulltion
fumes
fintie resoruce
land fills
oil spoills

71
Q

do plastics geenrally need finishing

A

no

FINAL DESIGN (43 decks)

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