JPS59168603A - Plastic magnet - Google Patents
Plastic magnetInfo
- Publication number
- JPS59168603A JPS59168603A JP58042669A JP4266983A JPS59168603A JP S59168603 A JPS59168603 A JP S59168603A JP 58042669 A JP58042669 A JP 58042669A JP 4266983 A JP4266983 A JP 4266983A JP S59168603 A JPS59168603 A JP S59168603A
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- irradiated
- plastic magnet
- magnetic powder
- powder
- 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
- H01F1/10—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
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、高分子材料により磁石粉末を結合したプラス
チック磁石の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a plastic magnet in which magnetic powder is bonded with a polymeric material.
従来より、ポリエチレン（以下ＰＫと略記する）エチレ
ン耐龜ビニル共爪合体（以下ｍＡと略記する〕ボリブ四
ピレン（以下ＰＰと略記する）、ポリアミド（以下ｐＡ
ｍと略記する）等のμ分子材料により、フェライト磁石
粉末、希土類金属磁石粉末等の磁石材料粉末を結合した
プラスチック磁石は良く知られている。成形法としては
、射出成形法か一般的である。Conventionally, polyethylene (hereinafter abbreviated as PK), ethylene anti-vinyl co-claw combination (hereinafter abbreviated as mA), polypyrene (hereinafter abbreviated as PP), polyamide (hereinafter abbreviated as pA)
Plastic magnets in which magnetic material powders such as ferrite magnet powders and rare earth metal magnet powders are combined with μ molecule materials such as ferrite magnet powders and rare earth metal magnet powders are well known. A common molding method is injection molding.
しかしながら、これら従来技術では、プラスチプラスチ
ック磁石に要求される特性としてはｉｌ＋耐熱性、（２
）非膨潤性（非＠湿性）、（３１寸法変形が少ないこと
、（４）気体透過性が小さいこと等である。However, in these conventional technologies, the properties required for plastic magnets are il + heat resistance, (2
) non-swellability (non-wet), (31) little dimensional deformation, (4) low gas permeability, etc.
これら従来技術の欠点を改良するものとして、高分子材
料として、ＰＫ 、 ］１ｔＶＡ、 ＰＰ 、 ＰＡｍ
に代えて、ボリフエニレンスルフオイ亘以下ＰＰ８と略
記する）、ホーリエーテルスル７オイド（以下班と略記
する）等、耐熱性、非吸湿性に秀れた高分子を使用する
ことも横側されている。しかしなから、これらｐｐｓ班
等はｐＨ，Ｉｌ’Ｖ仁ＰＰ、−等に比較して、粘性が高
く射出成形を試みる場合に、射出難を生ずるたけでなく
、Ｍｉ秘中成形による異方性化も難かしかった。In order to improve the shortcomings of these conventional techniques, as polymer materials, PK, ]1tVA, PP, PAm
Instead, it is also possible to use polymers with excellent heat resistance and non-hygroscopicity, such as polyphenylene sulfoyide (hereinafter abbreviated as PP8) and polyether sulfoide (hereinafter abbreviated as PAN). Being on the side. However, these pps groups have a higher viscosity than pH, Il'V, PP, -, etc., and when injection molding is attempted, they not only cause injection difficulties, but also cause anisotropy during injection molding. It was also difficult to adapt.
粘性を低下せしめるために、これら高分子材料と磁石粉
末との混合物を温めた状態で成形することも考えられる
か、この場合には、磁石粉末の特性劣化を引き起こすこ
とがあった。又ＰＰＥ、 Ｐｘｓ等は、ｐＥ、 ］］ｌ
’ｌＪＡ、ＰＰ、 ＰＡｍ等に比較して、高価な原料で
あり経済的でもなかった。In order to reduce the viscosity, it may be possible to mold the mixture of these polymer materials and magnet powder in a warm state, but in this case, the characteristics of the magnet powder may deteriorate. Also, PPE, Pxs, etc. are pE, ]]l
Compared to JA, PP, PAm, etc., it is an expensive raw material and is not economical.
本発明は、上記の如き技術の状況に鑑みて、低ダレード
の高分子材料を使用しても、耐熱性、非膨匍性に秀れる
プラスチック磁石を得ることが出来るものである。In view of the state of the art as described above, the present invention makes it possible to obtain a plastic magnet that is excellent in heat resistance and non-expandability even when using a polymeric material with a low Dalade.
本発明は例えは、希土類コバルト磁石粉末をＰＦｉで結
合し、円筒状磁石となし、シャフトを嵌挿した後に、ア
ルゴンプラズマ照射によって円筒状磁石の外表面に照射
重合層を形成したプラスチック磁石である。The present invention is, for example, a plastic magnet in which rare earth cobalt magnet powder is bonded with PFi to form a cylindrical magnet, a shaft is inserted therein, and then an irradiated polymer layer is formed on the outer surface of the cylindrical magnet by argon plasma irradiation. .
表ｍ１の照射車台層が、プラスチック磁石としての耐熱
性を高め、又、外表面からの水分、気体等の侵入を防止
する。寸法多形は通常、プラスチック磁石の吸湿性に起
因していると考えられるが、本発明に依れは防止するこ
とができる。The irradiated undercarriage layer shown in Table m1 increases the heat resistance as a plastic magnet and prevents moisture, gas, etc. from entering from the outer surface. Dimensional polymorphism is usually considered to be caused by the hygroscopicity of plastic magnets, but can be prevented by the present invention.
本発明を以下、実施例に基づいて更に詳細に説明する。The present invention will be explained in more detail below based on examples.
実り、ｆ３ｊＪ ｌ ： 平均粒径ｚ３μのストロンチ
ウムフェライト磁石粉末２に９をミキサーで攪拌しなか
ら、ビニル−トリスシランの３％水浴液５ｔを噴霧して
表ｍ１被糠を行なった。Fruit, f3jJ l: After stirring strontium ferrite magnet powder 2 and 9 with an average particle size z3μ with a mixer, 5 tons of a 3% water bath solution of vinyl-trissilane was sprayed to perform bran coating.
次いで１８３Ｃに加熱した貌に上記表面処理したストロ
ンチウムフェライト磁石粉末を徐々に加えなから混練し
て、ストロンチウムフェライト磁石粉末９４亀量％の謀
Ａ−７エライト磁石糸組成物を原料として、長さ３０ｍ
１外径５傭、内径２Ｇの円筒状磁石を射出成形した。こ
のようにして得た円筒状磁石の中空部に長さ３７！のシ
ャフトを嵌挿し、外表面にアルゴンプラズマを４秒間照
射した。Next, the above surface-treated strontium ferrite magnet powder was gradually added to the surface heated to 183C and kneaded, and a length of 30 m was prepared using a plot A-7 elite magnet thread composition containing 94% strontium ferrite magnet powder as raw material.
A cylindrical magnet with an outer diameter of 5 mm and an inner diameter of 2 G was injection molded. The hollow part of the cylindrical magnet thus obtained has a length of 37! The shaft was inserted and the outer surface was irradiated with argon plasma for 4 seconds.
比較の為、外表面にアルゴンプラズマを照射してないも
のと共に、２０Ｏｒ恒温槽に入れて、５時曲後取り出し
て表面！ｌｌ！祭を行なった所、アルゴンプラめ
ズマを照射したものについては、何の変化もｇ４られな
かったか、アルゴンプラズマを照射しないものについて
は、表面が［Ｌ２゛形が肉眼で観１祭された。For comparison, I put it in a 20Or constant temperature oven along with one whose outer surface was not irradiated with argon plasma, and after the 5 o'clock turn, I took it out and looked at the surface! ll! Where the ritual was performed, for those exposed to argon plasma, no changes were observed, or for those not exposed to argon plasma, the surface was observed to be [L2゛] shaped with the naked eye.
実施例２：高分子材料としてポリアミド框脂を使用して
Ｖ？：に例１と同様に５ ｃｍ Ｘ ２ ｃｍφの円柱
状磁石を創出成形により得た。外表Ｆｌｕにｘｇを１０
秒間照射し得た製品を、外表ｍ１にｚ ｆ４％を照射し
ないものと比較の為、７０ｒ″の渇水中につけた後、引
き上げて、寸法を測定した。外表ｍ１にＸ ｆｆＪを照
射した製品は、寸法変形が認められなかったか、Ｘ線を
照射しなかった復；）品は約４％の月決膨張が認められ
曲かりも発生した。Example 2: V? using polyamide frame resin as the polymer material. : A cylindrical magnet of 5 cm x 2 cmφ was obtained by creative molding in the same manner as in Example 1. Add xg to 10 on the outer surface Flu.
For comparison, the products that could be irradiated for seconds were immersed in water of 70 r'' and then pulled out and their dimensions measured for comparison with those whose outer surface m1 was not irradiated with z f4%.The product whose outer surface m1 was irradiated with However, because no dimensional deformation was observed or X-ray irradiation was not performed, the product was observed to expand by about 4% per month and was bent.
Claims (1)
いて、その表面の少なくとも１部に、照射重合層を形成
したことを特徴とするプラスチック磁石０ ２ 外表ｍ１に照射魚介層を形成した特許請求の範囲第
１ｍ記載のプラスチック磁石。 ３、 アルゴンプラズマ、Ｘｍ、市、子線の内少すくと
も１柚の照射によって照射重合層を形成した特１１′Ｉ
狛求の範囲第１項記載のプラスチック磁石。 本 磁性粉末と高分子材料とを混練後、金型内で射出成
形した後、その表面に照射魚介層を形成した特許ＮＦ４
求の範囲第１項記載のプラスチック磁石。[Claims] 1. A plastic magnet formed by combining a magnetic powder and a polymer material, characterized in that an irradiation polymerization layer is formed on at least a part of the surface of the plastic magnet 0 2 whose outer surface m1 is irradiated. The plastic magnet according to claim 1m, in which a seafood layer is formed. 3. Special 11'I in which an irradiation polymerized layer was formed by irradiating at least one of Argon plasma, Xm, Ichi, and Column beams.
The plastic magnet described in item 1 of the scope of Komaki. After kneading magnetic powder and polymeric material, injection molding is performed in a mold, and an irradiated shellfish layer is formed on the surface of the patent NF4.
A plastic magnet according to item 1 of the scope of the request.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58042669A JPS59168603A (en) | 1983-03-15 | 1983-03-15 | Plastic magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58042669A JPS59168603A (en) | 1983-03-15 | 1983-03-15 | Plastic magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59168603A true JPS59168603A (en) | 1984-09-22 |
Family
ID=12642426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58042669A Pending JPS59168603A (en) | 1983-03-15 | 1983-03-15 | Plastic magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59168603A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4990876A (en) * | 1989-09-15 | 1991-02-05 | Eastman Kodak Company | Magnetic brush, inner core therefor, and method for making such core |
| JPH03191501A (en) * | 1989-12-21 | 1991-08-21 | Tokin Corp | Manufacture of bond magnet highly resistant to oxidation |
| JPH0628544U (en) * | 1992-09-04 | 1994-04-15 | しげる工業株式会社 | Ventilator outlet structure for vehicles |
-
1983
- 1983-03-15 JP JP58042669A patent/JPS59168603A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4990876A (en) * | 1989-09-15 | 1991-02-05 | Eastman Kodak Company | Magnetic brush, inner core therefor, and method for making such core |
| JPH03191501A (en) * | 1989-12-21 | 1991-08-21 | Tokin Corp | Manufacture of bond magnet highly resistant to oxidation |
| JPH0628544U (en) * | 1992-09-04 | 1994-04-15 | しげる工業株式会社 | Ventilator outlet structure for vehicles |
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