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AQA Design and Technology GCSE > Developments in new materials > Flashcards

Developments in new materials Flashcards

1
Q

What are modern materials?

A

A material that has been engineered to have improved properties

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2
Q

What are the properties of graphene?

A

A light and strong layer of graphite. It is a good conductor and is quite cheap

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3
Q

What is graphene used for?

A
  1. Tennis rackets
  2. aerospace applications
  3. flexible electronics (e.g. folding phone)
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4
Q

What are the properties of metal foams?

A

Gas-filled spaces make them lightweight but still tough, stiff and strong under compression

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5
Q

What are metal foams used for?

A

Car parts and bone implants

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6
Q

What are the properties of titanium?

A

Corrosion resistant and high strength to weight ratio

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7
Q

What is titanium used for?

A
  1. Bone replacements
  2. dental implants
  3. bikes
  4. ships
  5. armour
  6. the aerospace industry
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8
Q

What are the properties of LCDs?

A

thin, lightweight and energy efficient

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9
Q

What does LCD stand for?

A

Liquid Crystal Display

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10
Q

What are coated metals?

A

Metals coated in a different materials to alter their properties

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11
Q

What are some examples of coated metals?

A
  1. galvanising
  2. anodised aluminium (coated with iron oxide to make harder)
  3. PVC coating (for colours and corrosion resistance)
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12
Q

What are nanomaterials made up of?

A

Tiny particles used to improve material properties

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13
Q

What are some examples of nanomaterials?

A
  1. Self cleaning fabrics
  2. antibacterial fabrics
  3. carbon nanotubes (for sports equipment)
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14
Q

What are smart materials?

A

Materials that can change their properties due to external factors

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15
Q

What do photochromic pigments do?

A

Darken when exposed to specific kinds of light (usually UV)

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16
Q

What are photochromic pigments used for?

A
  1. lenses
  2. colour changing cutlery
  3. colour changing inks
17
Q

What are shape memory alloys?

A

Alloys that can ‘remember’ their original shape

18
Q

What are composites?

A

2 or more materials bonded together

19
Q

Give 2 examples of composite materials

A

GRP and CFRP

20
Q

What is GRP used for?

A

Boats or kayaks

21
Q

What is CFRP used for?

A

Sports equipment or race cars

22
Q

What are the properties of kevlar?

A

strong

23
Q

What is kevlar used for?

A

bullet proof vests or reinforcing tyres

24
Q

What are the properties of nomex?

A

fire resistant

25
Q

What are the properties of micro-encapulation

A

Chemicals coated in small shells

26
Q

What is nomex used for

A

firefighter overalls

27
Q

What is microencapulation used for?

A

odour neutralisers and perfumes

28
Q

What are the properties of conductive fabrics?

A

fibres that conduct electroicity

29
Q

What are conductive fabrics used for?

A

touchscreen gloves

AQA Design and Technology GCSE (9 decks)

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