Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Dyeing Property of Aramid Spun Yarn with Disperse Dyes in Circulated Supercritical Fluid Dyeing

초임계 유체 순환시스템을 이용한 아라미드 방적사의 분산염료 염색성

  • 용광중 (한국생산기술연구원 환경염색가공팀) ;
  • 박영환 (한국생산기술연구원 환경염색가공팀) ;
  • 유기풍 (서강대학교 화학공학과) ;
  • 이혜정 (한국생산기술연구원 환경염색가공팀) ;
  • 남성우 (성균관대학교 유기소재공학과)
  • Published : 2003.10.01
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Abstract

The industry is becoming more conscientious of environmental management and are promoting sustainable production. But the dyeing industry is still recognized as one of the polluting industries which discharges wastewater. Therefore, efforts are being made to reduce wastewater using ultra low liquor ratio dyeing machines and foam dyeing. However, these techniques do not solve the basic problem of wastewater generation. The supercritical fluid dyeing(SFD) technique is a new dyeing process using supercritical carbon dioxide instead of water. To dye aramid(Nomex) spun yarn by SFD, a 3 liter SFD machine was designed and manufactured. C.I. Disperse Red 360, Red 60, Yellow 54 and Blue 56 were used in this work. Dyeing property and level dyeing of aramid fiber were improved by the incorporation of in-out/out-in circulation device, nozzle, and cover in the SFD system. Physical properties(tensile strength, elongation, shrinkage) of Nomex spun yarn treated by the SFD condition(13$0^{\circ}C$, 20 MPa, 60 min) were unaffected. Dyeing property of Nomex spun yarn with disperse dyes in the SFD increases as molecular weight of dyes decreases and as temperature and pressure of dyeing increases in the E type dyes. Colorfastness of dyed Nomex spun yarn by the SFD were acceptable except for wash fastness.

Keywords

References

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