- electrical casing eg remotes, sockets - adhesives

- reinforce and strengthen other surfaces like car parts - used in lay up processes

- adhesives - aerospace applications - used in lay up process

Polymers Flashcards by Yasmin Namayanja

polymer stock forms

sheet
granules
powder
film
rod
foam

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what is a thermoplastic

polymer that can be reheated and reshaped; can be recycled

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what is a thermoset polymer

when heated, polymer goes through a chemical change that cannot be undone. they cannot be recycled

they are designed for long term use hence the rigid bonds they form

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what is an elastomer

at room temp can be deformed under pressure and then without the pressure can go back to its original shape

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polymers are made from

crude oil and take many years to degrade
sustainable/ natural resources biopolymers
recycled polymers

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how many thermoset plastics are there

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what type of plastic is Urea formaldehyde (UF)

thermoset

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Urea Formaldehyde (UF) characteristics

hard
brittle
good insulator
heat resistant

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UF uses

electrical casing eg remotes, sockets
adhesives

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Melamine Formaldehyde (MF) characteristics

hard
tough
heat resistant
food safe
chemical resistant

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UF melting point

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MF melting point

130

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what type of plastic is Melamine Formaldehyde (MF)

thermoset

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MF uses

food plates
picnic ware
buttons

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what type of plastic is Polyester resin

thermoset

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Polyester resin characterstics

heat resistant
chemical resistant
brittle
dries hard and tough

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polyester resin uses

reinforce and strengthen other surfaces like car parts
used in lay up processes

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polyester resin melting point

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what type of plastic is epoxy resin

thermoset

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epoxy resin characteristics

hard
heat resistant
rigid
chemical resistant
tough

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epoxy resin uses

adhesives
aerospace applications
used in lay up process

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epoxy resin melting point

80-200

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natural rubber polymer type

elastomer

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natural rubber characteristics

high tensile strength
low elongation
hard
tough
electrical insulator
good thermal resistance against friction

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natural rubber uses

- car tyres - tubes - hoses - balloons - footwear

Butadiene rubber (BR) polymer type

elastomer

butadiene rubber (BR) characteristics

- tough - good wear resistance against friction - good thermal resistance against friction - electrical insulator

butadiene rubber (BR) uses

tyres shoe soles conveyor belts water hoses toys

neoprene polymer type

- elastomer

neoprene characteristics

thermal resistant oil/ chemical resistant weather resistant tough electric insulator good abrasion resistance

neoprene uses

wetsuits laptop cases hose covers industrial wire insulation

silicone polymer type

thermoset

silicone characteristics

good flexibility at low temperatures poor abrasion resistance good thermal resistance good weather resistance good lubricating qualities electrical insulator

silicone uses

flexible ice tray bakeware cooking utensiles lubricants

what type of polymer is LDPE

thermoplastic

LDPE characteristics

- lightweight - weather resistant - tough - ductile - tough - range of colours

LDPE Resin code number

LDPE melting point

LDPE uses

bin liners carrier bags cling film

what type of polymer is HDPE

thermoplastic

HDPE characteristics

- chemical resistance - tough - weather resistance

HDPE resin code

HDPE uses

chemical drums jerry cans buckets detergent bottles

HDPE melting point

what type of polymer is polypropylene

thermoplastic

PP characteristics

- good fatigue (hinge resistance) - tough - weather proof - good chemical resistance

PP Resin code

PP uses

- plastic hinges bottle lids - medical syringes - food storage

PP melting point

100

what type of polymer is HIPS

thermoplastic

HIPS characteristics

- hard - tough - rigid

HIPS uses

- single use plastic cup - yoghurt pots - toilet seats

HIPS melting point

ABS polymer type

thermoplastic

ABS Characteristics

- hard - tough - electrical insulator

ABS uses

- hard hats - electrical appliance casing eg fridge

ABS melting point

PMMA polymer type

thermoplastic

PMMA Characteristics

- hard - tough - chemical resistant

PMMA is more commonly known as

acrylic

PMMA uses

acrylic car light casing baths

PMMA melting point

Nylon polymer type

thermoplastic

nylon characteristics

corrosion resistant tough hard low friction

nylon uses

bags clothing plastic screws

nylon melting point

150

PVC polymer type

thermoplastic

PVC characteristics

- tough - flexible - good weathering resistance - good chemical resistance

PVC uses

inflatables hoses imitation leather medical grade tubing

PVC resin code number

PVC melting point

uPVC polymer type

thermoplastic

uPVC characteristics

tough hard rigid good weathering resistance good chemical resistance

uPVC uses

bank cards pipes window frame

uPVC melting point

what is the resin identification code used for

thermoplastics, helps recycle plastics more efficiently

name the 7 resin id codes

1 PETE 2 HDPE 3 PVC 4 LDPE 5 PP 6 PS 7 OTHER