Smart and Technical Textiles. Why do I need to know about Smart and Technical fabrics? This subject...
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Transcript of Smart and Technical Textiles. Why do I need to know about Smart and Technical fabrics? This subject...
![Page 1: Smart and Technical Textiles. Why do I need to know about Smart and Technical fabrics? This subject is often included in your GCSE exam A recent exam.](https://reader035.fdocuments.us/reader035/viewer/2022070323/56649da75503460f94a93e5d/html5/thumbnails/1.jpg)
Smart and Technical Textiles
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Why do I need to know about Smart and Technical fabrics?
• This subject is often included in your GCSE exam
A recent exam question showed a baseball cap and asked for a name of a smart fabric and an explanation of how it would be used to enhance the product.
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What are Technical Textiles?
• Technical textiles have been developed for their performance, and functional properties.
• The aesthetics (visual appearance) is less important.
• They are often made of microfibres (synthetic fibres up to 100 times finer than human hair)
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Who uses Technical Textiles?
• The building industry• The agricultural industry• The medical industry• Automotive and Aeronautical
industries• The Armed forces and the Police• Sportsmen and women• Technical Textiles are all around
us.
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Here are just a few examples:
• Super absorbent medical textiles used in wipes, wound dressings, nappies.
• Super stretchy polyester yarns knitted on machines (no seams) & used in artery replacement
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Combating MRSA in hospitals
• X-Static® is the name of new yarn which uses silver in its production.
• Trials have shown it will eliminate 99.9% of bacteria within 1 hour including MRSA
• Future uses could be hospital bedding & pyjamas.
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Technical Fabrics used by the Armed Services and Police
• Kevlar – used in body armour / bullet proof vests.
• High Visibility jackets use strips of 3M retro-reflective tape. This works by concentrating the light source & reflecting it back.
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Lots of Technical Fabrics in Sportswear
• Nomex - fire retardant used in Formula 1 (& also oven gloves)
• Gortex – water repellent and windproof: used in cycle jackets, outdoor wear
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Breathable Fabrics
• Coolmax by DuPont was developed for Sportswear: it transports moisture away from the body to the surface of the fabric, to keep you dry & comfortable.
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Biomimetics
• These are fabrics that have been designed to mimic nature.
• Speedo’s Fastskin® swimsuit was developed using V-shaped fibres which mimic the ridges found on the skin of a shark
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Electronic Textiles
• These are becoming more common & are a fast-growing part of the textiles industry.
• They meet 2 consumer needs:– Fashion– The desire for mobile communication
and entertainment devices.
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Electronic Textiles• Soft switches can be
incorporated into garments which have been woven with conductive threads
• You could keep your i-pod safe in your bag & turn up the volume without opening it, or plug your phone into your jacket &, text your friends with buttons on your sleeve!
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The possibilities are endless!
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What are Smart Textiles?
Smart textiles are designed to react to conditions around them.
They can respond to external stimuli, e.g.Hot or cold temperaturesLightPressurePowerTime
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Memory Textiles
• Temperature & pressure sensitive foam that moulds to the shape of the body & returns to normal when pressure is removed.
• Originally developed by NASA to help astronauts deal with G-Force when blasting-off into space
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Pressure response Fabric
• D3o is a new innovation• It is a soft malleable most of the time• When it comes into contact with
force it hardens on impact• Have a look at this clip to see how it
works: • http://www.youtube.com/watch?v=tK
QxDoXqc_I
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Micro-encapsulation
• Chemicals / Fragrances are captured in microscopic polymer bubbles which are added to natural or microfibres.
• When the fabric is rubbed or comes into contact with the skin, the bubbles slowly burst to release their content
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Textiles with Micro-encapsulation
• Fragrances added to socks to combat smelly feet
• Sea Minerals added to tights to help reduce cellulite
• Anti allergen chemicals added to bedding
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Dye Technology
• Smart chemicals can be added to dyes which are printed on to textiles.
• Some are purely for fun and novelty value
• Others can have more serious uses.
Fragrance can be added to dyes to make scratch & sniff T-shirts, baby’s fabric books, etc.
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Thermo chromic dyes
• These dyes react to heat
• They change colour at a particular temperature.
• The resulting colours & effects will depend if they are applied just to a fabric, or mixed with another dye.
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Photo chromic dyes
• Photo chromic dyes react to day light / UV light & change colour.
• Products include beads & trims, threads & fabrics
• Have you seen photo chromic lenses in glasses?
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Phosphorescent Pigments• These dyes are used
in glow-in-the dark products
• Often used in prints on novelty clothing such as children’s nightwear, clothes for clubbing or Halloween costumes
• Originally developed for clock hands & numbers
• Some baby’s dummies have this treatment
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Some more Electronic Fabrics
• http://www.youtube.com/watch?v=rjzrFAGYBsg
• http://www.youtube.com/watch?v=Yd99gyE4jCk
• http://www.youtube.com/watch?v=OZmxeJdDnjg
• http://www.youtube.com/watch?v=jdzpocxSdaY