섬유

ARAMID FIBER FROM HOECHST.

  • 출판일1997.10
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 447
A novel method is used at Hoechst's Kelheim plant to produce aramid fibers. The Hoechst process uses n-methyl pyrolidone as a sovlent. The polymers are held in solution through to final extrusion, after which they are drawn at over 400 degrees Celsius. The Hoechst process eliminates the need for the two solvent recovery systems required for the production of competing fibers. The aramid fibers produced by the hoechst process display a resistance to sulfuric and hydrochloric acids and caustic sodas that continues even at higher temperatures. The fibers are flame-retardant and self-extinguishing. They have potential uses as cement reinforcement and as asbestos substitutes.
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