Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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The Effect of Orientation of Magneto-responsible Particles on the Transmissibility of Magneto-rheological Elastomer

자기장 응답 입자의 배향이 자기유변 탄성체의 전달성에 미치는 영향

  • Lee, Joo-Hwan (Department of Polymer Engineering, The University of Suwon) ;
  • Chung, Kyung-Ho (Department of Polymer Engineering, The University of Suwon) ;
  • Yoon, Ji-Hyun (School of Mechanical Engineering, Hanyang University) ;
  • Oh, Jae-Eung (School of Mechanical Engineering, Hanyang University) ;
  • Kim, Min-Soo (Hyundai Kia Motors Research & Development Division) ;
  • Yang, Kyung-Mo (Hyundai Kia Motors Research & Development Division) ;
  • Lee, Seong-Hoon (Hyundai Kia Motors Research & Development Division)
  • 이주환 (수원대학교 신소재공학과) ;
  • 정경호 (수원대학교 신소재공학과) ;
  • 윤지현 (한양대학교 기계공학부) ;
  • 오재응 (한양대학교 기계공학부) ;
  • 김민수 (현대.기아 연구개발본부) ;
  • 양경모 (현대.기아 연구개발본부) ;
  • 이성훈 (현대.기아 연구개발본부)
  • Received : 2011.10.18
  • Accepted : 2011.11.10
  • Published : 2011.12.31
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Abstract

The neodymium magnet inserted mold was proposed to orient magneto-responsible particles efficiently. The anisotropic magneto-rheological elastomer(MRE) was prepared using the new mold and the optimum amounts of the particles was 30 vol.%. As the orientation of particles was increased, the tensile strength of MRE was decreased, while the hardness of MRE was increased. It was found that the MRE containing 30 vol.% of magneto-responsible particles showed the maximum magneto-rheological effect. The ratio of shear modulus shift was 59% at the input current of 3 A. The transmissibility of MRE was decreased with increasing the input current and loading amounts of magneto-responsible particles. Therefore, the damping property of MRE could be improved by preparing the anisotropic MRE.

자기장 응답 입자를 효율적으로 배향시킬 수 있는 네오디뮴 자석이 삽입된 몰드가 제시되었다. 입자 배향 공정을 통해 이방성 자기유변 탄성체가 제조되었으며 입자의 최적 첨가량은 30 vol.% 였다. 입자 배향성이 증가할수록 자기유변 탄성체의 인장강도는 감소하고 경도는 증가하였다. FFT 분석기를 통해 측정된 최대 자기유변 특성은 30 vol.%의 자기장 응답 입자를 포함한 자기유변 탄성체에서 나타났으며 인가전류 3 A에서 최대 59%의 전단 모듈러스 변화율을 나타내었다. 또한 인가전류와 자기장 응답 입자의 첨가량이 증가할수록 자기유변 탄성체의 전달성은 감소하였고 흡수 주파수 영역은 증가하여 우수한 댐핑 특성을 나타내었다.

Keywords

References

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