5 - Major developments in technology - New materials

Question 1

Name 4 examples of new materials

Answer 1

• Glulam
• Kevlar
• Graphene
• Precious metal clay (PMC)

Question 2

Glulam

Answer 2

Layered timber and glue used to create various components

• Elimination of timber defects
• Easy to form parts
• Good strength/weight ratio
• Sustainable

Buildings, bridges and other structures

Question 3

Kevlar

Answer 3

Fibre, which is often combines with resins

• Exceptional toughness and tensile strength
• Light weight

Bulletproof vests, puncture-resistant tyres

Question 4

Graphene

Answer 4

2D form of microscopic carbon particles (single layer) with a honeycomb-like atomic structure

• Can be rolled into very thin hollow tubes
• Good tensile strength, hardness, heat resistance and electrical conductivity
• Lacks recyclability

Medical treatment, ‘Nanoelectric’ devices, advanced coatings, batteries

Question 5

Precious metal clay (PMC)

Answer 5

Microscopic particles of metals like gold and silver bound together in a pliable material (clay)

• Can be easily hand shaped before oven firing at 700 degrees C

Jewellery, decorative items