FLUX CONTROL OF MAGNETIC PASTE BY MAGNETIC HIGH-POLYMER MATERIAL IN HIGH FREQUENCY BAND AND ITS APPLICATION

磁性高分子材料对磁膏的高频通量控制及其应用

• 批准号: 04555091
• 负责人: OKA Hideo
• 金额: $ 3.78万
• 依托单位: IWATE UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04555091/
• 关键词: MAGNETIC FUID; AGAR; JELLY; APPLIED MAGNETICS; PERMEABILITY; MAGNETIC MATERIAL; PARICLE; COLLOID

Magnetic agar obtained by mixing agar with water-basis magnetic fluid has several interesting features, e.g. being endowed with magnetism and a water holding property, being rich in flexibility in a jelly-like style, being susceptible to change in viscosity in accordance with temperatures, etc. By making the most of these features, practical application can be considered with this seaweed-derived gelatinous material in such a way of utilizing magnetic heating paste enabling us to exclusively heat specific portions by applying paste in possession of magnetic performance and high-frequency magnetic field, high-frequency magnetic shield materials, etc.However it is regrettable that sufficient investigation has never been made with a metrological method and evaluation of high-frequency magnetic performance of magnetic agar as a magnetic material.In this study, adoption of an internal excitation method as a metrological means for the magnetic performance of the magnetic agar is proposed, and influence of the magnetic permeability of the sample, frequency limitation, and magnetic measurement error are described. In addition, results of the metrology of the magnetic permeability practically conducted with magnetic agar are shown. Furthermore a result of investigation concerning magnetic core loss of the magnetic agar has been explained.

通过将琼脂与水基磁流体混合得到的磁性琼脂具有几个有趣的特征，例如具有磁性和保水性能，具有果冻状的丰富柔韧性，易随温度变化粘度等。通过充分利用这些特征，可以考虑实际应用这种海藻衍生的胶状材料，以这种方式利用磁性加热膏，使我们能够通过应用具有磁性和高频磁场的膏体来专门加热特定部分，高频磁屏蔽材料，然而，令人遗憾的是，从未对作为磁性材料的磁性琼脂的高频磁性进行过充分的计量方法和评价。本研究提出采用内激励法作为磁性琼脂磁性性能的计量手段，并对样品的磁导率、频率限制、磁性测量误差等因素的影响进行了阐述。并给出了用磁性琼脂实际测量磁导率的结果。并对磁性琼脂磁芯损耗的研究结果进行了解释。

项目成果

HIDEO OKA: "AN INVESTIGATION ON MAKING MAGNETIC AGAR AND METROLOGICAL METHOD OF AC MAGUNETIC PERMEABILITY." JOINT CONVENTION RECORD OF MAGNETIC FLUID OF MAGUNETIC FLUID. 4-6 (1993)

HIDEO OKA：“磁性琼脂的制作和交流磁导率的计量方法的研究。”

小野・岡: "内部励磁法による磁性流体の透磁率測定に関する実験的検討" 電気学会・マグネティックス研資. MAG-92 206. 129-137 (1992)

Ono和Oka：“利用内激励法测量磁性流体磁导率的实验研究”日本电气工程师学会磁学研究基金MAG-92 206. 129-137（1992）。

岡 英夫: "磁性寒天の作製法と透磁率計測法について(1)" 磁性流体連合講演会講演論文集. 4-6 (1993)

Hideo Oka：《论磁性琼脂的制备方法和导磁率的测量方法(1)》磁流体协会会议论文集4-6(1993)。

HIDEO OKA: "A MANUFACTURING METHOD AND METHOD FOR MEASURING PERMEABILITY OF A MAGNETIC AGAR." JOURNAL OF THE JAPAN SOCIETY OF POEDER AND POWDER METALLURGY.VOL.41, NO.2. 125-128 (1994)

HIDEO OKA：“一种制造方法和测量磁性琼脂磁导率的方法。”

F.ONO & H.OKA: "MAGNETIC PERMEABILITY MEASUREMENT OF MAGNETIC FLUID BY MEANS OF INTERNAL EXCITATION METHOD." PAPER OF TECHNICAL MEETING ON MAGNETICS, IEEJ, MAG-91-206. 129-137 (1992)

小野