Polymers

Question 1

what are tehrmosettign polymers

Answer 1

set with heat
permanaently

Question 2

what are themro polymers

Answer 2

set with heat
btu can be reshapes

Question 3

processes polymers (themro) useful for

Answer 3

inj moulding
vaccum forming
blow moulding

Question 4

whats good ab thermo polymers

Answer 4

can be recyled

Question 5

what has a higher working temp themro or thermo set

Answer 5

thermo set

Question 6

what does working temp mean

Answer 6

temp needed to melt and use and shit

Question 7

properities of LDPE

Answer 7

Very tough
Chem reist
weather proof
low rigidity
waxy

Question 8

can ldpe and hdpe be trnaslucent

Answer 8

yes

Question 9

uses of ldpe

Answer 9

squeezy detergent bottles
bin bags
food film wrap
toys

Question 10

proeprites of hdpe

Answer 10

Weather proof
tough
weatehr reistance
chem restance
stiiff
hard

Question 11

uses of HDPE

Answer 11

bleach bottles
chemcial drums
long lfie bas

Question 12

uses of polyseterene

Answer 12

dispsoable cups

Question 13

proeprities of poly prop

Answer 13

chem reisannce
tough
good fatigue res
hard
stiff

Question 14

what si pp when thin

Answer 14

flexible

Question 15

uses of pp

Answer 15

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

Question 16

proeprities of HIPS

Answer 16

hard
rigid
tough

Question 17

uses of HIPS

Answer 17

yoghurt poys
singel use drink cups
toilet seats

Question 18

colorus hips available in

Answer 18

coloure
dtranslucent

Question 19

proeprities of ABS

Answer 19

tough
hard
high impacy resyamce

Question 20

uses of ABS

Answer 20

phone hand sets
suitcases
remote contorls
bumbeprs
hoovers

Question 21

proeprities of PET

Answer 21

hard
transluscen
good impac resiatnce

Question 22

uses of PET

Answer 22

water bottles
chcolaet box liners

Question 23

proeprties of uPVC

Answer 23

rigid
opaquw
tough
hard
good chem reistance

Question 24

uses of uPVC

Answer 24

window frame
gutters
water sevrice peipes
bank cards

Question 25

proeprites of PVC

Answer 25

transulcent tough flexbible weatehr and chem reistance

Question 26

uses of PVC

Answer 26

hose pipes cable isnualtion inflatable products seat coverings

Question 27

what is PMMA

Answer 27

acryclics

Question 28

uses of acryclic

Answer 28

car light units alt to glass

Question 29

proeprities of pmma

Answer 29

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

Question 30

when abs used

Answer 30

when products subject to impact and weight aint matter eg hoover plugs - dragged alogn

Question 31

what polymer for cabel insualtion

Answer 31

uPVC

Question 32

what material used for stickers and shit

Answer 32

uPVC (vinyl)

Question 33

what may be added to PVC to betetr it

Answer 33

heat and uv stabilsiers

Question 34

types of polysterene

Answer 34

GPPS HIPS EPS

Question 35

proeprities of ps ingeneal

Answer 35

hard rigid low shrinkage moulds well high detail

Question 36

uses of polysterene in genral

Answer 36

toys ridgid packagign fridge rtays boxes

Question 37

when i talk ab polysteerne in general which is ti

Answer 37

GPPS

Question 38

HIPS comapred to GPPS

Answer 38

simialr machinability 7 tiems impact strength

Question 39

when is HIPS most used

Answer 39

when impact strenght machianailtiy low cost required

Question 40

what is used pre production and modelling generally

Answer 40

HIPS

Question 41

what is used to proetct packages and delicate items

Answer 41

EPS

Question 42

pros of EPS

Answer 42

very lightweight 98% air easy to model

Question 43

brand name of PMMA

Answer 43

perspex

Question 44

what is one of teh strongets plastic

Answer 44

PET

Question 45

what si polyamide

Answer 45

wool silks nylons

Question 46

proeprties fo UF

Answer 46

hard heat restant good elecitical insualtor brtille

Question 47

when is UF used

Answer 47

when in pwoder form mixed with water as wood glue

Question 48

what does UF combine

Answer 48

good insualtion at low cost

Question 49

uses of UF

Answer 49

electricla fittings adhesives

Question 50

properties of polyseter resin

Answer 50

rigid heat resiatnt chem reistant brittle

Question 51

uses of polyster resin

Answer 51

catsigns lay up process for GRP nad CFRP

Question 52

proeprities of epoxy resin

Answer 52

rigid hard tough chemical reistan

Question 53

which type of epoxy resin has two activator tubes

Answer 53

high meltign point

Question 54

uses of epoxy resin

Answer 54

adhesive surface coating holding electricla comp in palce

Question 55

prperites fo phenal formalyhyde

Answer 55

opawque dark in colour

Question 56

uses of PF

Answer 56

handles for suace pands and shi

Question 57

meleamine formaludge

Answer 57

multi coloure opaque

Question 58

uses of mf

Answer 58

cups plates kitchen surfaces

Question 59

why is PF used over UF

Answer 59

hiher heat resiatcne

Question 60

what do PF finishes and surcaes give

Answer 60

hard wearing heat and water res

Question 61

what finish does epoxy resin give

Answer 61

hard wearign durable

Question 62

how epoxy powder coating work

Answer 62

resin and hardner sprayed onto shit

Question 63

is epoxy resin a good isnualtor

Answer 63

yes

Question 64

name tehrmosettign polyemrs

Answer 64

epoxy resin UF MF PF polyster resin

Question 65

without filler or reinforceemnt what si polysteer resin

Answer 65

very vrittle

Question 66

benefits fo polsyter resin

Answer 66

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

Question 67

main pros of polymers

Answer 67

impact reist chem reitatn

Question 68

what are ms=ost tehrmo settign polymers

Answer 68

brtiile in tension stonger in compression

Question 69

enviro friendly option instead ofppolymers

Answer 69

biopolymers

Question 70

issues with using polymers

Answer 70

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

Question 71

do plastics geenrally need finishing

Answer 71

no