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GCSE DT > PLASTIC > Flashcards

PLASTIC Flashcards

1
Q

1.plasic products are made from…….which are chains of………..

A

POLYMERS

HYDRO-CARBONS

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2
Q

2.these hydrocarbons come from…….which is drilled out of the ground

A

CRUDE OIL

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3
Q

3.they are…..and comibined with other chemicals to make different plastics

A

REFINED

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4
Q

4.they are then………in factories to make finished products

A

PROCESSED

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5
Q

CRACKING

A

uses heat to break up the polymer chains into more useful products.

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6
Q

NEGATIVE

A
  • most use non-renewable resources (crude oil)
  • most are not bio-degradable
  • they are costly to recycle
  • their production pollutes the plant
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7
Q

POSITIVE

A
  • several can be recycled
  • some can be incinerated (burnt) to recover energy
  • new bio-polymers are being developed
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8
Q

THERMOPLASTICS (PROPERTIES)

A
  • flexible when heated
  • easily recycled
  • can be re-formed
  • plastic memory
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9
Q

TYPES OF THERMOPLASTICS

A

POLYETHYLENE
HIGH DENSITY POLYETHYLENE
ACRYLIC
NYLON

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10
Q

POLYETHYLENE

A
  • clear, coloured easily
  • recyclable, blow moulding
  • food packing, bottles
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11
Q

HIGH IMPACT POLYSTYRENE

A
  • flat, coloured sheets
  • flexible, vacuum forming, food safe
  • food containers e.g yoghurt pots
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12
Q

ACRYLIC

A
  • thin+thick, bars, sheets
  • tough but brittle, easily scratched
  • car lights, modern baths
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13
Q

NYLON

A
  • smooth, film, sheet
  • low friction,hard wearing
  • clothing, tents, rope
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14
Q

TYPES OF THERMO-SET PLASTICS

A

EPOXY RESIN

MELAMINE

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15
Q

EPOXY RESIN

A
  • 2 liquids (resin+hardener)
  • sets clear and smooth
  • stronger than normal resin
  • waterproof coating, used in fibreglass
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16
Q

MELAMINE (MF)

A
  • moulded in to different shapes
  • different colours
  • food safe, light weight
  • kitchenware, flat packed furniture.
17
Q

THERMO-SET PLASTICS (PROPERTIES)

A
  • resistant to heat
  • difficult to recycle
  • can be burned of energy recovery
  • cannot be reformed because of cross-links forms when they cool
  • rigid
18
Q

BIO-PLASTICS (PROPERTIES)

A
  • non-toxic
  • bio-degradable in soil
  • cannot be recycled
  • made from vegetable starches
19
Q

TYPES OF BIO-PLASTICS

A

PLA
PCL
BIOPOL

20
Q

PLA

A
  • smooth finish
  • reels,non-toxic
  • bottles, pots, phone cases
21
Q

PCL

A
  • mouldable
  • translucent pellet
  • low temperature
  • reuseable
  • jewellery, personalised of products
22
Q

BIOPOL

A
  • smooth finish
  • slow bio-degradable
  • quite brittle
  • household items, food containers

GCSE DT (11 decks)

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