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Plastics RM > Smart and Composite Materials > Flashcards

Smart and Composite Materials Flashcards

1
Q

What can Smart Steels do?

A

Become magnetic under high stress

Absorb impact

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2
Q

What is Polymorph?

A

A tough polymer which softens and becomes easy to mould at 62degrees
Can be softened with hot water or hairdryer, moulded into shape by hand and hardened when cool

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3
Q

What are Smart Colours?

A

Range of thermochromic pigments that react to changes in temperature or glow in the dark
Can be mixed with acrylic paint and colour change occurs at predetermined temperatures

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4
Q

What are Smart colours used for?

A

Designing games
Temperature Indicators on Mugs/Spoons for babies to indicate safe temperatures
Additions to jewellery

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5
Q

What are other Smart Materials?

A

Smart grease

Piezo-electric actuators

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6
Q

What is Smart Grease?

A

Sticky and viscous gel that can be used to control the movement of mechanisms

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7
Q

What are Piezo-electric actuators?

A

Electrically charged quartz crystals due to being deformed under mechanical stress

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8
Q

What is the use of Piezo-electric actuators?

A

Gas lighters on cookers

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9
Q

What is Glass Reinforced Polyester (GRP)?

A

Polyester Resin that has been reinforced by addition of strands of spun glass fibres

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10
Q

What is the use of Glass Reinforced Polyester?

A

Car body building

Boat hulls

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11
Q

What is reinforced concrete?

A

Cement mixed with water, sand, aggregate and reinforced with steel bars

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12
Q

What are the properties of Glass Reinforced Plastic?

A

Light
Hardwearing
Durable
Resistant to Corrosion

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13
Q

What are the properties of Reinforced concrete?

A

Dense
Strong under compression
Flexible
Tensile forces

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14
Q

What is reinforced concrete used for?

A

Buildings

Bridges

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15
Q

What are Composites?

A 
Glass Reinforced Polymer
Reinforced Concrete
Carbon Fibres
Kevlar
Tufnol
Bi-metallic Strip
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16
Q

What are Carbon Fibres?

A

Spun into cord, laminated with plastics to give exceptional strength and resistance to strain

17
Q

What are the uses are Carbon Fibres?

A

Camping

Sports Equipment

18
Q

What are threads of Kevlar?

A

Retain much of their strength at high temperatures and under stress

19
Q

What are threads of Kevlar used for?

A

Protective Equipment

Cut resistant gloves, helmets, vehicle protection, body armour

20
Q

What do threads of Kevlar do?

A

Help the seams and edges stay sealed

Keep out flames or sharp points that would burn/ cut the wearer

21
Q

What are the properties of Tufnol?

A

Lightweight, Good strength, Electrical Insulating properties, doesn’t corrode, excellent weather resistance and chemical resistance

22
Q

What is Tufnol?

A

High pressure laminate

23
Q

What are the uses of Tufnol?

A

Used in situations requiring long life in outdoor or marine environments

24
Q

What is a Bi-metallic Strip?

A

Composite of two metals with different rates of expansion

25
Q

What happens when the temperature changes in a bi-metallic strip?

A

Metal with greater rate of expansion bends around other

26
Q

What are Bi-metallic strips used for?

A

Simple temperature sensing devices

27
Q

What are are Nanomaterials?

A

Based on small nanoparticles diameter (50mn)

28
Q

What are the properties of Nanoparticles?

A 
Lubricants
Flame retardants
Sealants 
Binders
Adhesives
29
Q

What does the fact that nanoparticles are strong UV light absorbers mean?

A

Self Cleaning Glass

30
Q

What does the fact that nanoparticles are small enough to enter the bloodstream mean?

A

Deliver drugs round the body

31
Q

What can nanotechnology be used for?

A

Increase strength of polymers and make surfaces harder wearing

32
Q

What can nanotechnology be used to help create?

A

Self Cleaning Clothing
Garments that absorb collision and protect body
Sports clothing that measures your individual fitness levels

Plastics RM (12 decks)

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