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Kevlar.

Kevlar.

  • Kevlar is a man made fibre.
  • Kevlar is a polyamide formed from benzene-1,4-diamine and benzene-1,4-dicarboxylic acid.
    This image shows synthesis of Kevlar from benzene-1,4-diamine and benzene-1,4-dicarboxylic acid.
    Kevlar.
  • Kevlar can also be produced from benzene-1,4-diamine and benzene-1,4-dicarbonyl dichloride.
    This image shows synthesis of Kevlar from benzene-1,4-diamine and benzene-1,4-dicarbonyl dichloride.
    Kevlar.
  • It is strong but relatively light.
  • Kevlar can resist attacks from many different chemicals, though long exposure to strong acids or bases will degrade it over time.
  • Unlike most plastics it does not melt. It is reasonably good at withstanding temperatures and decomposes only at ~450°C.
  • Kevlar is used in making military body armour and jackets.
  • Military helmets are made from Kevlar.
  • Its resistance to chemicals and temperature extremes make it an ideal component for ropes and cables.
  • Kevlar is used as a strength member in optical fibre cables.
  • Protection vest are made with Kevlar.
    This image shows uses of Kevlar in military body armour, military helmets,ropes, cables, optical fibre cables, protection vests.
    Uses of Kevlar.

Questions on Kevlar;

Q1) What is Kevlar?
Ans) Kevlar is a man made fibre.
Q2) How is Kevlar prepared?
Ans) Kevlar is a polyamide formed from benzene-1,4-diamine and benzene-1,4-dicarboxylic acid.
Kevlar can also be produced from benzene-1,4-diamine and benzene-1,4-dicarbonyl dichloride.
Q3) Write some properties of Kevlar?
Ans) Some properties of Kevlar are given below;
1) It is strong but relatively light.
2) Kevlar can resist attacks from many different chemicals, though long exposure to strong acids or bases will degrade it over time.
3) Unlike most plastics it does not melt. It is reasonably good at withstanding temperatures and decomposes only at ~450°C.
Q4) Write some uses of Kevlar?
Ans) Some uses of Kevlar are given below;
1) Kevlar is used in making military body armour and jackets.
2) Military helmets are made from Kevlar.
3) Its resistance to chemicals and temperature extremes make it an ideal component for ropes and cables.
4) Kevlar is used as a strength member of optical fibre cables.
5) Protection vest are made with Kevlar. Next

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