JPH11317306A - Magnet body - Google Patents
Magnet bodyInfo
- Publication number
- JPH11317306A JPH11317306A JP10136092A JP13609298A JPH11317306A JP H11317306 A JPH11317306 A JP H11317306A JP 10136092 A JP10136092 A JP 10136092A JP 13609298 A JP13609298 A JP 13609298A JP H11317306 A JPH11317306 A JP H11317306A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- dendrimer
- magnetic powder
- molding
- dendritic polymer
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- 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
- H01F1/04—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 metals or alloys
- H01F1/06—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 metals or alloys in the form of particles, e.g. powder
- H01F1/08—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 metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
- H01F1/083—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 metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together in a bonding agent
-
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、合成樹脂材に磁性
粉を混入して成形しこれを着磁した磁石体に係り、特に
合成樹脂材に新素材であるデンドリティックポリマー若
しくはデンドリマーを用いた従来にない新たな磁石体に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnet body obtained by mixing a magnetic powder into a synthetic resin material, and molding and magnetizing the same. In particular, a dendritic polymer or dendrimer which is a new material is used for the synthetic resin material. It relates to a new magnet body that has never existed before.
【０００２】[0002]
【従来の技術】永久磁石を製法によって分類すると、焼
結磁石と樹脂成形磁石とに分けることができ、焼結磁石
は磁性粉末を圧縮成形しこれを焼固めることで接着融合
したもので、緻密かつ堅固である。2. Description of the Related Art Permanent magnets can be classified into sintered magnets and resin molded magnets according to the manufacturing method. Sintered magnets are made by compacting magnetic powder and then hardening it to bond and fuse them. And robust.
【０００３】これに対し樹脂成形磁石は、例えばナイロ
ン系の合成樹脂材に磁性粉を混入しこれを射出成形、押
出し成形、カレンダー成形等により成形するもので、焼
結磁石では成形が難しい形状であっても高精度に実現し
たり、シート状にして可撓性を備えることもできること
から、自動車運転用の初心者マークや事務用等の表示
物、書類等を挟持するバインダー、製図板、紙葉等を磁
性体面に掲示するための掲示具、モーター等、幅広い利
用方法が存在している。また、希土類元素のネオジウ
ム、サマリウム等の強磁性材料を樹脂成形磁石に用いる
ことにより、焼結磁石と同様もしくはそれ以上の磁気特
性を発揮することもできる。On the other hand, resin molded magnets are made by mixing magnetic powder into, for example, a nylon synthetic resin material and molding the mixture by injection molding, extrusion molding, calendar molding, or the like. Even if it is possible, it can be realized with high precision or it can be flexible in the form of a sheet, so it can be used as a binder for holding beginner's marks for car driving, display materials for office use, documents, etc., drafting boards, paper sheets There are a wide variety of usages, such as a bulletin tool for posting such as on a magnetic body surface, a motor, and the like. Further, by using a ferromagnetic material such as a rare earth element such as neodymium or samarium for the resin molded magnet, it is possible to exhibit the same or better magnetic properties as the sintered magnet.
【０００４】[0004]
【発明が解決しようとする課題】上述した利便性を有す
る従来の樹脂成形磁石は、優れた成形性や可撓性につい
ては維持しつつ、従来の合成樹脂材の特性に依存してい
る強度や耐熱性等の特性について一層向上した場合に
は、さらなる利用範囲の拡大が見込まれるものである。The conventional resin molded magnet having the above-mentioned convenience has excellent strength and flexibility which depend on the characteristics of the conventional synthetic resin material while maintaining excellent moldability and flexibility. If properties such as heat resistance are further improved, the range of use is expected to be further expanded.
【０００５】そこで、優れた特性を有する新たな素材を
用いた樹脂成形磁石を実現し、従来の樹脂成形磁石の特
性向上を図り、さらなる利用範囲の拡大が見込まれる新
たな磁石体の出現が待たれた。[0005] Therefore, a resin molded magnet using a new material having excellent characteristics has been realized, the characteristics of a conventional resin molded magnet have been improved, and the emergence of a new magnet body which is expected to have a further expanded use range has been awaited. Was.
【０００６】[0006]
【課題を解決するための手段】前述の目的を達成するた
め、本発明の磁石体は、スターバースト構造を有するデ
ンドリティックポリマー若しくはデンドリマーを含む合
成樹脂材に磁性粉を混入して成形しこれを着磁したこと
を特徴とするものである。Means for Solving the Problems In order to achieve the above-mentioned object, a magnet body of the present invention is formed by mixing magnetic powder into a dendritic polymer having a starburst structure or a synthetic resin material containing a dendrimer, and molding the same. It is characterized by being magnetized.
【０００７】[0007]
【発明の実施の形態】本発明の磁石体は、スターバース
ト（星状）構造を有する樹木状高分子化合物であるデン
ドリティックポリマー若しくは他の名称で言えばデンド
リマーを、従来のナイロン系合成樹脂材にある程度混入
し、さらに強磁性体であるネオジウム、サマリウム・コ
バルト、サマリウム・鉄、バリウム・フェライト、スト
ロンチウム・フェライト等の磁性粉を混入してこれを射
出成形、押出し成形、カレンダー成形等により適宜な形
状に成形する。そして、これを着磁することで本発明の
磁石体が得られるものである。BEST MODE FOR CARRYING OUT THE INVENTION The magnet of the present invention comprises a dendritic polymer, which is a dendritic polymer compound having a starburst (star-like) structure, or a dendrimer in other names, and a conventional nylon-based synthetic resin material. To some extent, and further mixed with magnetic powders such as ferromagnetic substances such as neodymium, samarium-cobalt, samarium-iron, barium-ferrite, strontium-ferrite, and injection molding, extrusion molding, calendar molding, etc. Form into shape. Then, by magnetizing this, the magnet body of the present invention is obtained.
【０００８】デンドリティックポリマー若しくはデンド
リマーは、従来の１本の直鎖状分子を形成する高分子材
料と異なり、コア（中心核）から星状、樹木状に枝が伸
びる球状の形態からなり、直鎖状高分子と比較して溶媒
に溶けやすい、粘度が低く混ぜやすい、高耐熱性、高強
度という特性を有するとともに、それぞれの枝に官能基
を多く有することができるので、種々の機能を発揮し得
る機能性材料として注目を集めている。そしてその合成
法としては、多官能基を有する中心核から１世代ずつ枝
を伸ばしてゆく発散法（ダイバージェント法）と、くさ
び状に合成した複数部分を最後に中心核に結合する収束
法（コンバージェント法）等が存在している。A dendritic polymer or dendrimer is different from a conventional polymer material forming a single linear molecule, and has a spherical shape in which branches extend in a star-like or tree-like manner from a core (central core). Compared to chain polymers, it has the properties of being more soluble in solvents, lower viscosity, easier to mix, higher heat resistance, and higher strength. It is attracting attention as a functional material that can be used. As a synthesis method, a divergence method in which branches are extended one generation at a time from a central nucleus having a multifunctional group (divergent method), and a convergent method in which a plurality of parts synthesized in a wedge shape are finally bonded to the central nucleus ( Convergent method).
【０００９】デンドリティックポリマー若しくはデンド
リマーにおける中心核から樹木状に枝が伸びる構造は、
１つの金属イオンのまわりに複数の分子やイオンが結合
している錯体と似たところがあり、これに磁性粉を混ぜ
ることにより、樹木状に伸びる枝が無機物である磁性粉
と結合して、電子が移動しやすく、かつ磁気特性も向上
する有機−無機のハイブリッド材料ができる。[0009] The dendritic polymer or dendrimer has a structure in which branches extend from the central core in a dendritic manner.
A complex similar to a complex in which multiple molecules or ions are bound around a single metal ion is mixed with magnetic powder, and the branches that grow like a tree combine with the magnetic powder, which is inorganic, to form an electron. The organic-inorganic hybrid material which easily moves and has improved magnetic properties can be obtained.
【００１０】デンドリティックポリマー若しくはデンド
リマーを、従来の例えばナイロン系合成樹脂材に混入す
る比率としては、機械的強度、磁性粉との結着性、成形
性及び磁気特性等が大幅に悪化しない限りにおいては、
５０％としたりナイロン系合成樹脂材を全く使用せずに
１００％とすることができ、その設定値は適宜実験する
ことにより決まる。The ratio of mixing a dendritic polymer or a dendrimer with a conventional nylon-based synthetic resin material is, for example, as long as the mechanical strength, the binding property with magnetic powder, the moldability and the magnetic properties are not significantly deteriorated. Is
It can be set to 50% or 100% without using any nylon-based synthetic resin material, and the set value is determined by appropriate experiments.
【００１１】本発明の磁石体は、どのような形状とする
ことも可能であるが、機械的強度が増すことからシート
状にした場合には、今までにない薄さでかつ磁気特性に
優れた磁石シートが得られる等の可能性があるものであ
る。Although the magnet body of the present invention can be formed into any shape, when it is formed into a sheet because of its increased mechanical strength, it is thinner than ever and has excellent magnetic properties. There is a possibility that a magnet sheet may be obtained.
【００１２】[0012]
【発明の効果】以上詳述の如く、本発明の磁石体によれ
ば、合成樹脂材からなることで優れた成形性や可撓性に
ついては維持しつつも、従来の合成樹脂材の特性に依存
している強度や耐熱性等の特性について一層向上し、さ
らに１つの金属イオンのまわりに複数の分子やイオンが
結合している錯体と同様に、電子が移動しやすいことか
ら磁気特性も向上し、さらなる利用範囲の拡大が見込ま
れるものである。例えば、スターバースト構造を有する
デンドリティックポリマー若しくはデンドリマーを含む
合成樹脂材に磁性粉を混入することで、従来の合成樹脂
材よりも強度等の機械的特性が向上し、これによりごく
薄いシート状に成形することが可能となったり、耐熱性
等が向上して発熱部位にも使用可能な磁石体とすること
ができるものである。As described above in detail, according to the magnet body of the present invention, while maintaining excellent moldability and flexibility by being made of a synthetic resin material, the characteristics of the conventional synthetic resin material are maintained. Dependence on properties such as strength and heat resistance are further improved, and magnetic properties are also improved because electrons are easy to move like a complex where multiple molecules and ions are bound around one metal ion However, the range of use is expected to expand further. For example, by mixing magnetic powder into a dendritic polymer having a starburst structure or a synthetic resin material containing a dendrimer, mechanical properties such as strength are improved as compared with conventional synthetic resin materials, thereby forming a very thin sheet. It is possible to form a magnet body that can be molded, has improved heat resistance, etc., and can be used also at a heat generating part.
Claims (1)
ィックポリマー若しくはデンドリマーを含む合成樹脂材
に磁性粉を混入して成形しこれを着磁したことを特徴と
する磁石体。1. A magnet body wherein a magnetic powder is mixed into a dendritic polymer having a starburst structure or a synthetic resin material containing a dendrimer, which is molded and magnetized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10136092A JPH11317306A (en) | 1998-04-30 | 1998-04-30 | Magnet body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10136092A JPH11317306A (en) | 1998-04-30 | 1998-04-30 | Magnet body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11317306A true JPH11317306A (en) | 1999-11-16 |
Family
ID=15167083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10136092A Pending JPH11317306A (en) | 1998-04-30 | 1998-04-30 | Magnet body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11317306A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001074946A1 (en) * | 2000-03-30 | 2001-10-11 | General Electric Company | Use of dendrimers as a processing aid and surface modifier for thermoplastic resins |
| CN106009637A (en) * | 2016-05-27 | 2016-10-12 | 湖北工程学院 | Preparation method of permanent magnet ferrite nylon masterbatch for compatibilization |
-
1998
- 1998-04-30 JP JP10136092A patent/JPH11317306A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001074946A1 (en) * | 2000-03-30 | 2001-10-11 | General Electric Company | Use of dendrimers as a processing aid and surface modifier for thermoplastic resins |
| US6497959B1 (en) | 2000-03-30 | 2002-12-24 | General Electric Company | Use of dendrimers as a processing aid and surface modifier for thermoplastic resins |
| US6663966B2 (en) | 2000-03-30 | 2003-12-16 | General Electric Company | Use of dendrimers as a processing aid and surface modifiers for thermoplastic resins |
| CN106009637A (en) * | 2016-05-27 | 2016-10-12 | 湖北工程学院 | Preparation method of permanent magnet ferrite nylon masterbatch for compatibilization |
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