composite and smart materials and modern materials

Question 1

what is a smart material?

Answer 1

a material that reacts to environmental changes

Question 2

what 5 things can a smart material react to?

Answer 2

heat, light, stress, moisture, or PH

Question 3

what are shape memory alloys?

Answer 3

alloys that will return to their original shape when heated

Question 4

what is goretex?

Answer 4

laminated membrane

Question 5

what are the properties of gore-tex?

Answer 5

-breathable
-lightweight
-waterproof

Question 6

what is gore-tex used for?

Answer 6

used on jackets and shoes

Question 7

how can smart materials be incorporated?

Answer 7

by embroidering or priming them on

Question 8

what are properties of electro-textiles?

Answer 8

-wearable
-soft, washable fabric with optical and electrical fibres in it

Question 9

what are memory textiles?

Answer 9

shape memory polymers

Question 10

what are thermochromatic alloys?

Answer 10

pigments that change colour depending on temp

Question 11

what are some uses for thermochromatic alloys?

Answer 11

used for novelty products and medical uses ( like wound dressings)

Question 12

what are photochromic alloys?

Answer 12

pigments that change colour depending on how much light is present

Question 13

what can photochromic alloys be used for?

Answer 13

novelty products to measure sen exposure

Question 14

what is a composite material?

Answer 14

a material made up of two or more materials and is designed to enhance properties

Question 15

what are technical textiles?

Answer 15

textiles manufactured for function rather than aesthetic

Question 16

what are conductive fabrics?

Answer 16

fabrics that have conductive fibres and can allow electrical currents to pass through them

Question 17

what do fire-resistant materials use to stay fire resistant?

Answer 17

meta-aramid

Question 18

what does CRP stand for?

Answer 18

carbon reinforced plastic

Question 19

what are the properties of CRP?

Answer 19

-lightweight
-high strength to weight ratio
-rigid
-tough

Question 20

how are composite materials formed?

Answer 20

by combining two or more materials that have different properties

Question 21

what does GRP stand for?

Answer 21

glass reinforced plastic

Question 22

what are properties of GRP?

Answer 22

strong
light
mouldable

Question 23

what are nano-fibres?

Answer 23

tiny molecules (smaller than 100 nanometers) that are added to fibres. they can be used to make the fabric repel water

Question 24

what are microfibres?

Answer 24

polyester or nylon microfibres that can be blended with synthetic or natural fibres

Question 25

what can microfibres be used for?

Answer 25

outdoor and sportswear

Question 26

what are the 4 properties of microfibres?

Answer 26

-durable -crease resistant -easy to care for -breathable

Question 27

what is GRP?

Answer 27

a mixture of glass fibre and thermosetting plastic

Question 28

what is CRP a mixture of?

Answer 28

carbon fibres and thermosetting plastic

Question 29

what is graphene?

Answer 29

a thin layer of graphite

Question 30

what can graphene be used for?

Answer 30

aeroplanes and sports rackets

Question 31

what are the 6 properties of graphene?

Answer 31

-clear -flexible -stretchable -strong -lightweight -imperable

Question 32

what are nano materials?

Answer 32

tiny particles woven into fabrics to solve several issues (e.g teflon to keep school uniforms clean)

Question 33

what is kelvar?

Answer 33

synthetic fibre which can be woven to create super strength and lightweight fabric.

Question 34

what can kevlar be used for?

Answer 34

used in bullet proof vests

Question 35

what is normex?

Answer 35

fire resistant fabric with resistance built into the fibres

Question 36

what are some uses of normex?

Answer 36

used in fire-fighter uniforms

Question 37

what is liquid crystal display? (LCD)

Answer 37

flat screen display which uses liquid crystals to create the shape formed by an image on a screen and it is used in calculators, and flat screen TVs

Question 38

what are the properties of LCD?

Answer 38

-flexible -high definition -energy efficient

Question 39

what are the 5 modern materials?

Answer 39

-kevlar -normex -LCD -graphene -nano materials

Question 40

how are kevlar fibres arranged?

Answer 40

in layers

Question 41

what is an example of a technical textile?

Answer 41

kevlar

Question 42

what are some uses for nanomaterials?

Answer 42

coating glass and fabric- nanomaterials can repel dirt or water which gives them 'self cleaning' properties

Question 43

what are the properties of titanium?

Answer 43

-high strength to weight ratio -resistant to corrosion -used in medicine like replacing hip joints and surgical instruments and is also used in sports equipment

Question 44

what are metal foams?

Answer 44

metal structures made from allumininium and titanium

Question 45

what are the properties of metal foams?

Answer 45

-strong -lightweight -conduct heat and electricity -recyclable they are used for soundproofing in cars and crash protection safety features

Question 46

what are constarch polymers?

Answer 46

natural organic polymers that come from vegetables they are renewable and biodegradable and are used in things like disposable cutlery

Question 47

what is PTFE?

Answer 47

non stick coating which is applied to surfaces to make them slippery like kitchen utensils

Question 48

why is plating done?

Answer 48

to prevent corrossion