Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Dispersion of Ba-ferrite Particles and Physical Properties of Melt-Blown PP/Ba-ferrite Nonwoven Fabrics

Ba-ferrite의 분산 안정성 및 멜트블로운 PP/Ba-ferrite 부직포의 물리적 특성

  • Choi, Ji-Sun (Composite Materials Team, Nanomaterials Application Division, Korea Institute of Ceramic Eng. & Tech.) ;
  • Lee, Dong-Jin (Composite Materials Team, Nanomaterials Application Division, Korea Institute of Ceramic Eng. & Tech.)
  • 최지선 (요업기술원 나노소재응용본부 복합재료팀) ;
  • 이동진 (요업기술원 나노소재응용본부 복합재료팀)
  • Published : 2006.12.31
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Abstract

The size of Ba-ferrite particles was decreased from $0.7{\mu}m\;to\;0.5{\mu}m$ by ball-milling according to SEM observation. The surface of Ba-ferrite particles was treated with stearic acid in order to improve dispersion stability in the polymer matrix. PP composites containing the surface treated Ba-ferrite particle as a magnetic particulate filler were prepared in the form of pellet from PP resin and Ba-ferrite powder by a melt compounding using a single extruder. PP/Ba-ferrite composite fabrics by a melt-blown spinning system were prepared. The relationship between the properties of PP/Ba-ferrite composite fabrics and melt-blown processing factors was investigated with these specimens. A fiber diameter and tensile strength were decreased as die to collector distance increased or as screw turning force decreased. The crystallinity was decreased with increasing Ba-ferrite content according to XRD. It was assumed that the orientation of crystalline domain in the neat PP without Ba-ferrite was increased by drawing in mechanical direction, however, the orientation in the PP composite was decreased according to XRD analysis. A coercive force, maximum magnetization and residual magnetization were increased with the screw turning force. According to the result of TGA measurement, the heat resistance was increased with the Ba-ferrite content and decreasing the die to collector distance.

Keywords

References

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