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Nomex

  1. 1. NOMEX
  2. 2. History  Dr. Wilfred Sweeny, a Scottish-born scientist was responsible for the discoveries leading to Nomex the Meta-Aramid fiber.  In 1960, DuPont introduced meta-aramid in commercial applications under the trade name Nomex.
  3. 3. Polymer formation  The polymer is produced by  condensation reaction from the monomers  m-phenylenediamine and isophthaloyl chloride.  Aromatic polyamides should be prepared from aromatic dicarboxylic acid and aromatic diamines. But aromatic dicarboxylic acid are unreactive that’s why we use more reactive aromatic acid chlorides.
  4. 4. Structure of NOMEX  NOMEX is a long chain polyamide.  Is made from meta-phenylenediamine and isophthaloyl chloride.  It is less rigid because the bends in the polymer chain.  The polymer is spun into a fiber.  Nomex is also made into sheets of paper and then formed into honeycomb shapes.
  5. 5. Chemical Structure Polymer Structure
  6. 6. Preparation Steps for manufacturing Polymer formation Spinning a)Preparation of dope solution b)Extrusion c)Solidification
  7. 7. About NOMEX  Flame resistant  Heat resistant  Fiber  Long chain molecule  Lightweight
  8. 8. Uses of NOMEX  Heat insulation  Electrical insulation  Automotive  Interior decoration  Aviation  Protective apparel  Fire apparel  Race apparel

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