DT Modern & Smart Materials (B)

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Mind map on Smart and Modern materials
E M
Mind Map by E M, updated more than 1 year ago More Less
Niamh Walsh
Created by Niamh Walsh over 9 years ago
E M
Copied by E M almost 5 years ago
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Resource summary

DT Modern & Smart Materials (B)
  1. Modern
    1. Carbon fibre
      1. made up of carbon woven into a cloth, impregnatted with resin to hold them together
        1. very lightweight
          1. high strength
            1. often used in F1 racing and sports equipment
            2. Polymorph
              1. a low melt polymer (60˚c) which can be remoulded easily
              2. Composite materials are made up of different materials which are combined to improve their properties.
                1. Man made boards
                  1. Flexi ply
                    1. as with ordinary plywood, there is an odd number of layers - usually 3
                      1. expensive
                        1. used for aesthetics and on furnitiure
                        2. Plywood: used for furniture and construction Chipboard is used for furniture panels and construction
                        3. Glass-reinforced plastic (GRP) | lass fibres and resin | used for Boats, instrument cases
                        4. Technical textiles
                          1. Modern textiles can be engineered to have numerous properties, such as additional strength or resistance to fire, water and even dirt.
                            1. Nomex Heat resistant and lightweight
                              1. used for Firefighters’ outfits
                              2. Kevlar
                                1. has 5x the strength-to-weight ratio of steel
                                  1. fibres are woven together flat
                                    1. used for bulletproof vests
                                    2. Elastane
                                      1. Stretchy, retains shape well, cheap and used for sportswear, leggings
                                      2. Microfibres are much thinner than human hairs and can be coiled to provide a very warm, soft or absorbent material that can be used in winter clothes or products such as cleaning cloths.
                                        1. Microencapsulation involves encapsulating liquid or solid substances in tiny thin-walled bubbles. These microspheres gradually release active agents when rubbed, which rupture the thin-walled membrane. This can bring benefits such as smelling good to cover body odours in sports clothing. A similar technology is used in the scratch and sniff perfume and aftershave samples in magazines.
                                    3. Smart
                                      1. Thermochromic pigments
                                        1. Change colour in response to heat
                                        2. Phosphorescent pigments
                                          1. absorb light and then release the light energy over a period of time
                                            1. e.g. emergency warning signs, 24hr clock faces
                                            2. Shape memory alloys
                                              1. e.g. nitinol wire
                                                1. shrinks in length by 5% when an electrical current is passed through it
                                                2. e.g. memoflex glasses
                                                  1. nickel/titanium alloy which will return to its original shape at room temperature after being deformed. A 'superelastic' alloy
                                                3. Photochromic pigments
                                                  1. Change colour in response to light
                                                4. What
                                                  1. Where
                                                    1. Who
                                                      1. When
                                                        1. Why
                                                          1. How
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