Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Effect of Electrostatic Treatments on the Filtration Efficiency of Melt-blown Nonwovens

멜트블로운 부직포의 정전 처리조건이 여과효율에 미치는 영향

  • Shim, Hyun-Joo (Department of Organic Materials and Fiber Engineering, Soongsil University) ;
  • Kang, June-Young (Department of Organic Materials and Fiber Engineering, Soongsil University) ;
  • Jang, Sun-Ho (Department of Organic Materials and Fiber Engineering, Soongsil University) ;
  • Oh, Tae-Hwan (School of Textiles, Yeungnam University)
  • 심현주 (숭실대학교 유기신소재.파이버공학과) ;
  • 강준영 (숭실대학교 유기신소재.파이버공학과) ;
  • 장선호 (숭실대학교 유기신소재.파이버공학과) ;
  • 오태환 (영남대학교 섬유패션학부)
  • Published : 2008.04.30
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Abstract

The air filter media were prepared using light polypropylene melt- blown nonwovens and then, corona charge was applied to achieve with low pressure drop and high filtration efficiency air filter. The processing variables for the corona treatments were set up, such as, the electric potential distance between the electrode and the nonwoven, the number of charging, the sequences of charging surfaces, and the concentration of ferro-dielectric nano particles. The electrical potential was applied in the range of 15 to 35 kV, the number of charging was 1 to 4 times with and without turn over the charging surface, the concentration of ferro-dielectric nano particle solutions were 0.5 to 1.5% (W/V). In this research, the most probable processing conditions gave a clue to make a HEPA filter when the media was plied 5 times. This HEPA filter showed its initial pressure drop be 7.7 mmAq and filtration efficiency be 99.99%.

Keywords

References

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