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논문 기본 정보

자료유형
학술저널
저자정보
In Hye Park (Inha University) Seung Hyuk Kwon (Inha University) Hyoung Jin Choi (Inha University) Nam Hui Kim (Daegu Gyeongbuk Institute of Science & Technology) Chun Yeol You (Daegu Gyeongbuk Institute of Science & Technology)
저널정보
한국자기학회 Journal of Magnetics Journal of Magnetics Vol.24 No.1
발행연도
2019.3
수록면
155 - 161 (7page)
DOI
10.4283/JMAG.2019.24.1.155

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초록· 키워드

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To solve the sedimentation drawback of soft-magnetic carbonyl-iron (CI) particles for their application to a magneto-rheological (MR) fluid, the coating of a polyindole (PIn) onto the surfaces of CI microspheres was introduced through chemical oxidization polymerization using 4-aminobenzoic acid as a grafting chemical to increase the interaction between CI particles and PIn. The coated morphology was confirmed using a scanning electron microscope, whereas the reduced density was examined through a gas pycnometer. The effect of the coating on MR performance was analyzed using a rotation rheometer connected with a magnetic field generator. Based on the results of a dynamic oscillation rheological test, the CI/PIn-based MR fluid exhibited a more elastically solid behavior with the applied magnetic fields when compared to a pure CI-based MR suspension, showing an increased magnetic-field strength-dependent storage modulus from a strain sweep test. With a solid-like behavior under an applied external magnetic field, the storage modulus was observed to be higher than the loss modulus within the entire frequency range.

목차

1. Introduction
2. Experiment
3. Results and Discussion
4. Conclusion
References

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