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Chapter 7 _ Nylon and Aramid Fibers

Chapter 7 _ Nylon and Aramid Fibers - Chapter 7 Nylon and...

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Chapter 7 – Nylon and Aramid Fibers nylon Number one for tenacity, good abrasion resistance, good elongation! –Wallace H. Carothers, DuPont Company invented nylon in the late 30s –a manufactured fiber in which the fiber-forming substance is a long-chain synthetic polyamide in which LESS than 85% amide linkages are attached directly to 2 aromatic rings. First synthetic fibers – Nylon and Aramid aramid –1974 – FTC – separate category –polyamide in which 85% or MORE amide linkages are attached directly to 2 aromatic rings •2 Main Classifications of NYLON –nylon 6 – Greatest production in Europe –nylon 6 & 66 – U.S. 6es refer to number of carbons –nylon 6 - Russia •variants 7, 9 - film isomers –each polymer contains the same elements by weight –the polymers’ molecules are arranged differently (6 and 66) NYLON: 1 st synthetic fiber produced in U.S. –DuPont Chemical Company •1938 commercial product •today –INVISTA – new division that makes the fiber – Dupont makes the chemicals that make fiber.
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