JP5186222B2 - 重合体中の磁性ナノ粒子の化学媒介分散液の生成および整列方法 - Google Patents
重合体中の磁性ナノ粒子の化学媒介分散液の生成および整列方法 Download PDFInfo
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- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
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- C08G65/40—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives derived from phenols from phenols (I) and other compounds (II), e.g. OH-Ar-OH + X-Ar-X, where X is halogen atom, i.e. leaving group
- C08G65/4012—Other compound (II) containing a ketone group, e.g. X-Ar-C(=O)-Ar-X for polyetherketones
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- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/34—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
- C08G65/38—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives derived from phenols
- C08G65/40—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives derived from phenols from phenols (I) and other compounds (II), e.g. OH-Ar-OH + X-Ar-X, where X is halogen atom, i.e. leaving group
- C08G65/4012—Other compound (II) containing a ketone group, e.g. X-Ar-C(=O)-Ar-X for polyetherketones
- C08G65/4031—(I) or (II) containing nitrogen
- C08G65/4037—(I) or (II) containing nitrogen in ring structure, e.g. pyridine group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/02—Polyamines
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/005—Reinforced macromolecular compounds with nanosized materials, e.g. nanoparticles, nanofibres, nanotubes, nanowires, nanorods or nanolayered materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
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- C—CHEMISTRY; METALLURGY
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- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/712—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the surface treatment or coating of magnetic particles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/0036—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties showing low dimensional magnetism, i.e. spin rearrangements due to a restriction of dimensions, e.g. showing giant magnetoresistivity
- H01F1/0045—Zero dimensional, e.g. nanoparticles, soft nanoparticles for medical/biological use
- H01F1/0054—Coated nanoparticles, e.g. nanoparticles coated with organic surfactant
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/0036—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties showing low dimensional magnetism, i.e. spin rearrangements due to a restriction of dimensions, e.g. showing giant magnetoresistivity
- H01F1/0045—Zero dimensional, e.g. nanoparticles, soft nanoparticles for medical/biological use
- H01F1/0063—Zero dimensional, e.g. nanoparticles, soft nanoparticles for medical/biological use in a non-magnetic matrix, e.g. granular solids
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- B22—CASTING; POWDER METALLURGY
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- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
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- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Description
22 マトリクス
23 分散液
Claims (21)
- 非強磁性ナノ粒子、弱い強磁性ナノ粒子またはこれらの組み合わせであるナノ粒子が重合体のマトリクス中に分散された固体形態の分散体を提供する工程と、
第1温度TFMで前記分散体をアニールすることによって、前記分散体中の任意の非強磁性ナノ粒子を強磁性ナノ粒子に転換し、且つ前記分散体中の任意の弱い強磁性ナノ粒子の強磁性を増進させる工程と、
前記アニール後、前記分散体が第2温度T A に加熱される間に、前記分散体に磁場を加えることによって、前記強磁性ナノ粒子の磁化容易軸が略同一方向に配向されるように前記ナノ粒子を整列させる工程と
を含み、前記ナノ粒子は、前記重合体の化学構造が有する官能基と可逆結合を生成する官能基で外表面が官能化されている、方法。 - 前記分散体がフィルムを含む、請求項1に記載の方法。
- 前記分散体の前記アニール前に、前記フィルムから磁気テープを生成することをさらに含む、請求項2に記載の方法。
- 前記フィルムが3ナノメートル(nm)から50ミクロンの範囲内の厚さを有する、請求項2に記載の方法。
- TFMおよびTAが、それぞれ50℃から500℃の範囲内にある、請求項1に記載の方法。
- 前記マトリクス中の前記ナノ粒子が前記マトリクス中の非強磁性ナノ粒子である、請求項1に記載の方法。
- 前記マトリクス中の前記ナノ粒子が前記マトリクス中の弱い強磁性ナノ粒子である、請求項1に記載の方法。
- 前記ナノ粒子が前記分散体中に5重量%と99重量%との間の濃度で含まれる、請求項1に記載の方法。
- 前記磁場が500エルステッド(Oe)と20,000Oeとの間の磁場強度を有する、請求項1に記載の方法。
- TFMがTAより高く、またはTAより低い、請求項1に記載の方法。
- TFMおよびTAが略同一の温度である、請求項1に記載の方法。
- それぞれ外表面を有する非強磁性ナノ粒子を提供する工程と、
前記非強磁性ナノ粒子の前記外表面を官能化する工程と、
化学構造が少なくとも1つの官能基を有する重合体を提供する工程と、
前記官能化後、前記重合体中に前記非強磁性ナノ粒子を分散させた分散液を生成する工程と、
前記分散液から固体形態の分散体を準備する工程と、
第1温度T FM で前記分散体をアニールすることによって、前記重合体中の前記ナノ粒子の強磁性を誘起して、前記非強磁性ナノ粒子を強磁性ナノ粒子に転換する工程と、
前記アニール後、前記分散体が第2温度T A に加熱される間に、前記強磁性ナノ粒子を整列させ、前記強磁性ナノ粒子の磁化容易軸を略同一方向に配向させる工程と
を含み、前記官能化する工程は、前記重合体の化学構造が有する少なくとも1つの官能基と可逆結合を生成する官能基で前記非強磁性ナノ粒子の外表面を官能化する工程を含む、方法。 - 前記官能化する工程は、官能化された界面活性剤、シリカ、またはこれらの組み合わせで前記外表面を官能化する工程を含む、請求項12に記載の方法。
- 前記官能化された界面活性剤が7−(5−ウラシル−イルカルバモイル)ヘプタン酸である、請求項13に記載の方法。
- 前記重合体の化学構造が有する官能基は窒素含有基である、請求項1または請求項12に記載の方法。
- 前記ナノ粒子がFe、Co、Ni、AlMnおよびこれらの組み合わせからなる群から選択された物質を含む、請求項1または請求項12に記載の方法。
- 前記物質がAu、Sbまたはこれらの組み合わせでドープされる、請求項18に記載の方法。
- 前記ナノ粒子がPd化合物、Pt化合物、またはFe、Co、Niとこれら化合物との組み合わせ、またはこれらの組み合わせを含む、請求項1または請求項12に記載の方法。
- 前記化合物がAu、Sbまたはこれらの組み合わせでドープされる、請求項20の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US11/625839 | 2007-01-23 | ||
US11/625,839 US7854878B2 (en) | 2007-01-23 | 2007-01-23 | Method for forming and aligning chemically mediated dispersion of magnetic nanoparticles in a polymer |
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JP2008192283A JP2008192283A (ja) | 2008-08-21 |
JP5186222B2 true JP5186222B2 (ja) | 2013-04-17 |
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JP2008012323A Expired - Fee Related JP5186222B2 (ja) | 2007-01-23 | 2008-01-23 | 重合体中の磁性ナノ粒子の化学媒介分散液の生成および整列方法 |
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US (1) | US7854878B2 (ja) |
JP (1) | JP5186222B2 (ja) |
CN (1) | CN101230142A (ja) |
TW (1) | TW200847197A (ja) |
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JP5655439B2 (ja) * | 2010-08-31 | 2015-01-21 | 日産化学工業株式会社 | 光配向性の新規な液晶配向剤、及び新規なジアミン化合物 |
US10738174B2 (en) | 2012-04-23 | 2020-08-11 | International Business Machines Corporation | Aqueous soluble ferrimagnets stabilized by block copolymers |
US9461355B2 (en) * | 2013-03-29 | 2016-10-04 | Intel Corporation | Method apparatus and material for radio frequency passives and antennas |
US9818514B2 (en) | 2013-07-26 | 2017-11-14 | University Of Florida Research Foundation, Incorporated | Nanocomposite magnetic materials for magnetic devices and systems |
JP2015210834A (ja) * | 2014-04-25 | 2015-11-24 | 株式会社東芝 | パターン形成方法、及び磁気記録媒体の製造方法 |
JP5761428B2 (ja) * | 2014-06-05 | 2015-08-12 | 日産化学工業株式会社 | 新規なジアミン化合物 |
CN110373030B (zh) * | 2019-07-23 | 2021-06-18 | 南京工业大学 | 一种磁场诱导图案化组装与可擦除的磁控相变材料及其制备方法 |
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US3331712A (en) * | 1964-03-25 | 1967-07-18 | Allegheny Ludlum Steel | Method of making magnetic material |
DE2861696D1 (en) * | 1977-09-07 | 1982-04-29 | Ici Plc | Thermoplastic aromatic polyetherketones, a method for their preparation and their application as electrical insulants |
US5281482A (en) * | 1988-04-22 | 1994-01-25 | Minnesota Mining And Manufacturing Company | Magnetic recording medium comprising magnetic particles and an electron beam curable polyurethane binder having segments derived from a specified unsaturated diol |
US6933331B2 (en) * | 1998-05-22 | 2005-08-23 | Nanoproducts Corporation | Nanotechnology for drug delivery, contrast agents and biomedical implants |
JPH1186276A (ja) * | 1997-09-11 | 1999-03-30 | Toray Ind Inc | 磁気信号を有するフィルムおよびこれからなる真偽が判定される被検出物 |
WO1999040592A1 (de) * | 1998-02-09 | 1999-08-12 | Lofo High Tech Film Gmbh | Magnetfolie und verfahren zu deren herstellung |
US20030059604A1 (en) * | 2001-09-05 | 2003-03-27 | Fuji Photo Film Co., Ltd. | Material coated with dispersion of ferromagnetic nanoparticles, and magnetic recording medium using the material |
US6455815B1 (en) * | 2001-11-08 | 2002-09-24 | Despatch Industries, L.L.P. | Magnetic annealing oven and method |
JP2005519464A (ja) * | 2002-02-28 | 2005-06-30 | ザ、リージェンツ、オブ、ザ、ユニバーシティ、オブ、カリフォルニア | 配向粒子複合物 |
JP2004110917A (ja) * | 2002-09-18 | 2004-04-08 | Hitachi Ltd | 磁気記録媒体とそれを用いた磁気ディスク装置およびその製造方法 |
US20040191570A1 (en) * | 2003-03-31 | 2004-09-30 | Edwards Bruce H. | Magnetic recording media having increased high density broadband signal-to-noise ratio |
US7261834B2 (en) * | 2003-05-20 | 2007-08-28 | The Board Of Regents Of The University And Community College System Of Nevada On Behalf Of The University Of Nevada, Reno | Tunable magneto-rheological elastomers and processes for their manufacture |
FR2856189B1 (fr) * | 2003-06-10 | 2007-02-16 | Hutchinson | Procede de fabrication d'un dispositif de codage magnetique, ainsi que le dispositif ainsi obtenu |
JP2006253325A (ja) * | 2005-03-09 | 2006-09-21 | Fuji Photo Film Co Ltd | 磁性材料の製造方法、磁性材料および高密度磁気記録媒体 |
US7550520B2 (en) * | 2005-05-31 | 2009-06-23 | The University Of Alabama | Method of preparing high orientation nanoparticle-containing sheets or films using ionic liquids, and the sheets or films produced thereby |
US20090053512A1 (en) * | 2006-03-10 | 2009-02-26 | The Arizona Bd Of Reg On Behalf Of The Univ Of Az | Multifunctional polymer coated magnetic nanocomposite materials |
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- 2008-01-22 CN CNA2008100045647A patent/CN101230142A/zh active Pending
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TW200847197A (en) | 2008-12-01 |
JP2008192283A (ja) | 2008-08-21 |
US7854878B2 (en) | 2010-12-21 |
CN101230142A (zh) | 2008-07-30 |
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