WO2008136484A1 - Magnet and method for producing the same - Google Patents

Magnet and method for producing the same Download PDF

Info

Publication number
WO2008136484A1
WO2008136484A1 PCT/JP2008/058259 JP2008058259W WO2008136484A1 WO 2008136484 A1 WO2008136484 A1 WO 2008136484A1 JP 2008058259 W JP2008058259 W JP 2008058259W WO 2008136484 A1 WO2008136484 A1 WO 2008136484A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnet
functional group
disclosed
producing
crosslinking
Prior art date
Application number
PCT/JP2008/058259
Other languages
French (fr)
Japanese (ja)
Inventor
Kazufumi Ogawa
Original Assignee
Kazufumi Ogawa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kazufumi Ogawa filed Critical Kazufumi Ogawa
Publication of WO2008136484A1 publication Critical patent/WO2008136484A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0266—Moulding; Pressing
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
    • C08G18/3893—Low-molecular-weight compounds having heteroatoms other than oxygen containing silicon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
    • 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
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
    • H01F1/113—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles in a bonding agent

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Powder Metallurgy (AREA)

Abstract

Disclosed is a magnet having excellent magnetic characteristics, which does not require a high temperature environment during molding. Also disclosed is a method for producing such a magnet. Specifically disclosed is a magnet (10) comprising a magnetic particle (11) whose surface is covered with a coating film (12) which is formed by a film compound having a reactive functional group at an end of the molecule, and a crosslinking agent (13) having a plurality of crosslinking groups each of which reacts with a functional group and forms a bond. The covered magnetic particle (11) is molded and cured through a bond which is formed by a reaction between a functional group and a crosslinking group.
PCT/JP2008/058259 2007-05-02 2008-04-30 Magnet and method for producing the same WO2008136484A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-121866 2007-05-02
JP2007121866A JP2008277663A (en) 2007-05-02 2007-05-02 Magnet, and manufacturing method thereof

Publications (1)

Publication Number Publication Date
WO2008136484A1 true WO2008136484A1 (en) 2008-11-13

Family

ID=39943591

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/058259 WO2008136484A1 (en) 2007-05-02 2008-04-30 Magnet and method for producing the same

Country Status (2)

Country Link
JP (1) JP2008277663A (en)
WO (1) WO2008136484A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112331472A (en) * 2020-11-19 2021-02-05 江西中石新材料有限公司 Preparation method of high-performance modified SmFeN magnetic powder and permanent magnet

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5846979B2 (en) * 2012-03-16 2016-01-20 三井金属鉱業株式会社 Coated magnetite particles and method for producing the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004296875A (en) * 2003-03-27 2004-10-21 Matsushita Electric Ind Co Ltd Process for producing flexible hybrid rare earth bonded magnet, magnet and motor
JP2006169618A (en) * 2004-12-20 2006-06-29 Sumitomo Metal Mining Co Ltd Iron based magnet alloy powder comprising rare earth element, method for producing the same, resin composition for bond magnet obtained therefrom, and bond magnet and consolidated magnet

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3597507B2 (en) * 2001-01-24 2004-12-08 松下電器産業株式会社 Fine particle array, method for producing the same, and device using the same
WO2003015109A1 (en) * 2001-08-09 2003-02-20 The Circle For The Promotion Of Science And Engineering Composite magnetic material prepared by compression forming of ferrite-coated metal particles and method for preparation thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004296875A (en) * 2003-03-27 2004-10-21 Matsushita Electric Ind Co Ltd Process for producing flexible hybrid rare earth bonded magnet, magnet and motor
JP2006169618A (en) * 2004-12-20 2006-06-29 Sumitomo Metal Mining Co Ltd Iron based magnet alloy powder comprising rare earth element, method for producing the same, resin composition for bond magnet obtained therefrom, and bond magnet and consolidated magnet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112331472A (en) * 2020-11-19 2021-02-05 江西中石新材料有限公司 Preparation method of high-performance modified SmFeN magnetic powder and permanent magnet

Also Published As

Publication number Publication date
JP2008277663A (en) 2008-11-13

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