Effect of Processing Factors on the Properties of Melt-blown PP/Ba-ferrite Composite Fabrics

Melt-blown 방사에 의한 PP/Ba-ferrite 복합 부직포 제조시의 공정인자가 부직포의 특성에 미치는 영향

  • Han, Jong-Hun (Composite Materials Center, Korea Institute of Ceramic Eng & Tech.) ;
  • Lee, Dong-Jin (Composite Materials Center, Korea Institute of Ceramic Eng & Tech.) ;
  • Lim, Hyung Mi (Composite Materials Center, Korea Institute of Ceramic Eng & Tech.) ;
  • Lee, Seung-Ho (Composite Materials Center, Korea Institute of Ceramic Eng & Tech.) ;
  • Oh, Sung Geoun (Department of Chemical Engineering, Hanyang University)
  • 한종헌 (요업기술원 복합재료센터) ;
  • 이동진 (요업기술원 복합재료센터) ;
  • 임형미 (요업기술원 복합재료센터) ;
  • 이승호 (요업기술원 복합재료센터) ;
  • 오성근 (한양대학교 화학공학과)
  • Received : 2005.12.14
  • Accepted : 2006.04.17
  • Published : 2006.06.10

Abstract

We have prepared PP/Ba-ferrite composite fabrics by a melt-blown spinning method and investigated the relationship between the properties of PP/Ba-ferrite composite fabrics and melt-blown processing factors. A PP composite containing Ba-ferrite as a magnetic particulate filler was prepared in the form of pellet from PP resin and Ba-ferrite powder by melt compounding using a single extruder. Screw turning force (rpm), DCD (die-to-collector distance), and Ba-ferrite content were changed. We measured diameters of fiber, mechanical, thermal, and magnetic properties for the composited PP fabrics. The elongation was increased and a fiber diameter and tensile strength were decreased as the spinning distance increased or screw turning force decreased. The crystallinity was increased with increasing spinning distance according to XRD. It was assumed that the orientation of crystalline domain in the neat PP without ferrite was increased by drawing in mechanical direction, however, the orientation in the PP composite was decreased according to XRD analysis. We measured a magnetic property of PP nonwoven fabric containing Ba-ferrite powder. A coercive force, maximum magnetization, and residual magnetization are reduced with the spinning distance. According to the result of TGA measurement, the heat resistance was increased with the Ba-ferrite powder content and with decreasing the spinning distance.

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