JPH02102506A - Manufacture of magnetic material for permanent magnet - Google Patents
Manufacture of magnetic material for permanent magnetInfo
- Publication number
- JPH02102506A JPH02102506A JP63254944A JP25494488A JPH02102506A JP H02102506 A JPH02102506 A JP H02102506A JP 63254944 A JP63254944 A JP 63254944A JP 25494488 A JP25494488 A JP 25494488A JP H02102506 A JPH02102506 A JP H02102506A
- Authority
- JP
- Japan
- Prior art keywords
- mixed
- permanent magnet
- magnetic material
- hours
- 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
- 239000000696 magnetic material Substances 0.000 title claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 9
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000004898 kneading Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000010298 pulverizing process Methods 0.000 abstract description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 abstract 1
- 229910052808 lithium carbonate Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000011812 mixed powder Substances 0.000 abstract 1
- 238000001238 wet grinding Methods 0.000 abstract 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 239000006247 magnetic powder Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 2
- 229920000299 Nylon 12 Polymers 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- QLZJUIZVJLSNDD-UHFFFAOYSA-N 2-(2-methylidenebutanoyloxy)ethyl 2-methylidenebutanoate Chemical compound CCC(=C)C(=O)OCCOC(=O)C(=C)CC QLZJUIZVJLSNDD-UHFFFAOYSA-N 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 1
- 239000005042 ethylene-ethyl acrylate Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- LEDMRZGFZIAGGB-UHFFFAOYSA-L strontium carbonate Chemical compound [Sr+2].[O-]C([O-])=O LEDMRZGFZIAGGB-UHFFFAOYSA-L 0.000 description 1
- 229910000018 strontium carbonate Inorganic materials 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Compounds Of Iron (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、Ｗ型フェライトに熱可塑性樹脂５〜５０重量
％を混合混練することで、高磁力を有する永久磁石用磁
性材料の製造方法に関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method for producing a magnetic material for permanent magnets having high magnetic force by mixing and kneading 5 to 50% by weight of a thermoplastic resin with W-type ferrite. It is something.
（従来の技術）
特開昭５７−１８３０３号公報に記載のごとくＷ型フェ
ライトとは基本的には下記式に示される化学量論的組成
を有するフェライト相を意味する。(Prior Art) As described in JP-A-57-18303, W-type ferrite basically means a ferrite phase having a stoichiometric composition represented by the following formula.
ＭＡｉ”Ｆ ｅ ”Ｏ，。MAi”F e”O,.
（式中Ｍ＝Ｂａ１ＳｒまたはＰｂ
Ａ”＝Ｆｅ、Ｚｎ、Ｃｕ１Ｎ ｉ、Ｍｎ５Ｍｇまたはこ
れらの混合物）
Ｗ型７エライトの内 Ａ ”＝ Ｆ ｅ ”であるＷ型
フェライトについては飽和磁化の値が通常のＭ型フェラ
イト（ＭＯ・ｎ Ｆ ｅ ２０ ｓ 式中：Ｍ−Ｂａ
。(In the formula, M = Ba1Sr or Pb A" = Fe, Zn, Cu1N i, Mn5Mg or a mixture thereof) Of the W-type 7 ferrites, the W-type ferrite with A " = Fe " has a saturation magnetization value that is normal. M-type ferrite (MO・n Fe 20 s where: M-Ba
.
Ｓｒ又はＰｂ、ｎ−５〜６なる化学量論的組成を有する
もの）より大きいことは知られている。Sr or Pb, which has a stoichiometric composition of n-5 to 6), is known to be larger.
しかしながらＷ型７エライトは２価の金属イオンを含む
ため焼成時ＭＦｅＷ相が不安定となり、そのため酸素分
圧を厳しく制御して焼成及び焼鈍を行う必要があり、ま
た保持力がＭ型フェライトに比べて大巾に低下すること
から未だ実用化には至っておらず、従って上述したＷ型
フェライトを磁性粉とし、これに熱可塑性樹脂を混合混
練したプラスチック磁性材料は工業的に使用できるよう
には至っていない。However, since W-type 7 ferrite contains divalent metal ions, the MFeW phase becomes unstable during firing. Therefore, it is necessary to strictly control the oxygen partial pressure during firing and annealing, and the holding power is lower than that of M-type ferrite. However, it has not yet been put into practical use due to the large drop in magnetic flux, and therefore, plastic magnetic materials made by mixing and kneading the above-mentioned W-type ferrite with magnetic powder and thermoplastic resin have not yet been able to be used industrially. not present.
（発明が解決しようとする課題）
本発明は、上記のごと〈従来からある欠点を解消して、
飽和磁化σ、が大きく且つ保持力ＩＨｃも大きいＷ型フ
ェライトを磁性粉とし、これに熱可塑性樹脂を５〜５０
重量％重量％線することで高磁力を有する永久磁石とな
る磁性材料の製造方法を提供するものである。(Problems to be Solved by the Invention) The present invention solves the conventional drawbacks as described above,
A W-type ferrite with a large saturation magnetization σ and a large coercive force IHc is used as magnetic powder, and a thermoplastic resin is added to it to
The present invention provides a method for manufacturing a magnetic material that becomes a permanent magnet having high magnetic force by weight% weight%.
（課題を解決するための手段）
本発明は、Ｓ ｒｃＯｓ 、Ｚｎ０ＳＬ １２ｃＯｘ、
ＦｅｚＯ，の各粉末を原料とし、試料組成Ｓ ｒ ［
Ｚ ｎ（Ｌ ｉ Ｆ ｅ）＋ ｉ］Ｆ ｅ ｔａｓｔｙ
となるように混合して、大気中で１１００〜１６０
０℃、５〜９時間仮焼し、その後粒径１ｍｍ以下に粉砕
し、弗化物を１〜３重量％添加し湿式粉砕し、再び大気
中で６００〜１４００℃の温度で１〜６時間熱処理した
Ｗ型フェライトに熱可塑性樹脂を５〜５０重量％添加し
混練することを特徴とする永久磁石用磁性材料の製造方
法である。(Means for solving the problems) The present invention provides S rcOs , Zn0SL 12cOx,
Using each powder of FezO, as a raw material, the sample composition S r [
Z n (L i Fe) + i] Fe delicious
Mix it so that it becomes 1100-160 in the air.
Calcined at 0℃ for 5 to 9 hours, then crushed to a particle size of 1 mm or less, added 1 to 3% by weight of fluoride, wet crushed, and heat treated again in the air at a temperature of 600 to 1400℃ for 1 to 6 hours. This method of manufacturing a magnetic material for a permanent magnet is characterized in that 5 to 50% by weight of a thermoplastic resin is added to the W-type ferrite and kneaded.
本発明において用いられる弗化物とはＣａＦ２．５ｒＦ
１及びＢａＦ、の１種又は２種以上の組み合わせである
。The fluoride used in the present invention is CaF2.5rF
1 and BaF, or a combination of two or more thereof.
又熱可塑性樹脂としてはナイロン６、ナイロン１２或い
はこれらのコポリマーなどのポリアミド樹脂、ポリエチ
レン、ポリプロピレンなどのポリオレフィン樹脂、ポリ
塩化ビニル樹脂、エチレン酢酸ビニル共重合体樹脂、エ
チレンエチルアクリレート樹脂、ポリフェニレンサルフ
ァイド樹脂などをいう。Examples of thermoplastic resins include polyamide resins such as nylon 6, nylon 12, or copolymers thereof, polyolefin resins such as polyethylene and polypropylene, polyvinyl chloride resins, ethylene vinyl acetate copolymer resins, ethylene ethyl acrylate resins, polyphenylene sulfide resins, etc. means.
またＷ型フェライトを樹脂との相溶性を上げるためシラ
ン系或いはチタネート系の表面処理剤でフェライトを前
処理しても何ら差し支えのあるものではない。Furthermore, there is no problem in pre-treating the ferrite with a silane-based or titanate-based surface treatment agent in order to improve the compatibility of the W-type ferrite with the resin.
また熱可塑性樹脂を混合していることにより、押出成形
、射出成形が可能となり、従来よりある焼結磁石より軽
量で複雑な形状を有する永久磁石を製造することができ
る。Further, by mixing a thermoplastic resin, extrusion molding and injection molding are possible, and it is possible to manufacture a permanent magnet that is lighter than conventional sintered magnets and has a complicated shape.
（実施例）
Ｓ ｒ ［Ｚ ｎ（Ｌ ｉ Ｆ ｅ）ｏ、ｉ］Ｆ ｅ
ｔａｓｔｙ の組成を有するようにＳｒＣＯ３、Ｚｎ
○、Ｌｉ１ＣＯ，、Ｆｅ、Ｏ，の各粉末を混合し、大気
中で１３３０℃、７時間仮焼する。これをボールミル中
でエタノールの存在下に粒径１＋ａｍ以下に粉砕した。(Example) S r [Z n (L i Fe) o, i] Fe
SrCO3, Zn so as to have a composition of delicious
○, Li1CO,, Fe, and O powders were mixed and calcined in the atmosphere at 1330°C for 7 hours. This was ground in a ball mill in the presence of ethanol to a particle size of 1+am or less.
この粉砕生成物にＳｒＦ、を２重量％（実施例１）［比
較例１は無添加］添加して２０時時間式粉砕後、大気中
で９００°０．２時間熱処理した。得られＩ；磁性粉に
ナイロン１２を１２重量％混合し、２軸押比機で混練し
ペレット状にした。その後射出成形機で磁場成形を行い
、直流型磁束計で磁気特性を測定した。To this pulverized product, 2% by weight of SrF (Example 1) [no additive was added in Comparative Example 1] was added, and after 20 hour pulverization, heat treatment was performed at 900° in the air for 0.2 hours. Obtained I: 12% by weight of nylon 12 was mixed with magnetic powder, and the mixture was kneaded with a twin-screw presser to form pellets. After that, magnetic field molding was performed using an injection molding machine, and the magnetic properties were measured using a DC magnetometer.
第１表から判るようにＭ型フェライト（比較例２）に比
べて最大エネルギー積が大きくなっている。As can be seen from Table 1, the maximum energy product is larger than that of M-type ferrite (Comparative Example 2).
（発明の効果）
本発明により得られたＷ型７エライトを使用した永久磁
石はＭ型フェライトを使用した永久磁石より高磁力を有
する優れた磁気特性を持つため、永久磁石を必要とする
ＯＡ機器、ＦＡ機器のモーターなどの性能を向上させる
ことができる。(Effects of the Invention) Permanent magnets using W type 7 ferrite obtained by the present invention have superior magnetic properties with higher magnetic force than permanent magnets using M type ferrite, so they can be used in OA equipment that requires permanent magnets. , the performance of motors in FA equipment can be improved.
Claims (1)
＿２Ｏ＿３の各粉末を原料とし、試料組成 Ｓｒ［Ｚｎ（ＬｉＦｅ）＿０＿．＿５］Ｆｅ＿１＿６Ｏ
＿２＿７となるように混合して、大気中で１１００〜１
６００℃、５〜９時間仮焼し、その後粒径１ｍｍ以下に
粉砕し、弗化物を１〜３重量％添加し湿式粉砕し、再び
大気中で６００〜１４００℃の温度で１〜６時間熱処理
したＷ型フェライトに熱可塑性樹脂を５〜５０重量％添
加し混練することを特徴とする永久磁石用磁性材料の製
造方法。(1) SrCO_3, ZnO, Li_2CO_3, Fe
Each powder of _2O_3 was used as a raw material, and the sample composition was Sr[Zn(LiFe)_0_. _5]Fe_1_6O
Mix to give _2_7 and mix in the air to
Calcined at 600°C for 5-9 hours, then crushed to a particle size of 1 mm or less, added 1-3% by weight of fluoride, wet-milled, and heat-treated again in the air at a temperature of 600-1400°C for 1-6 hours. A method for producing a magnetic material for permanent magnets, which comprises adding 5 to 50% by weight of a thermoplastic resin to W-type ferrite and kneading the mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63254944A JPH02102506A (en) | 1988-10-12 | 1988-10-12 | Manufacture of magnetic material for permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63254944A JPH02102506A (en) | 1988-10-12 | 1988-10-12 | Manufacture of magnetic material for permanent magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02102506A true JPH02102506A (en) | 1990-04-16 |
Family
ID=17272027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63254944A Pending JPH02102506A (en) | 1988-10-12 | 1988-10-12 | Manufacture of magnetic material for permanent magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02102506A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1598835A1 (en) * | 2003-02-25 | 2005-11-23 | TDK Corporation | Ferrite magnet powder, sintered magnet, bond magnet and magnetic recording medium |
-
1988
- 1988-10-12 JP JP63254944A patent/JPH02102506A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1598835A1 (en) * | 2003-02-25 | 2005-11-23 | TDK Corporation | Ferrite magnet powder, sintered magnet, bond magnet and magnetic recording medium |
| EP1598835A4 (en) * | 2003-02-25 | 2008-06-25 | Tdk Corp | Ferrite magnet powder, sintered magnet, bond magnet and magnetic recording medium |
| US7879469B2 (en) | 2003-02-25 | 2011-02-01 | Tdk Corporation | Ferrite magnet powder, sintered magnet, bond magnet, and magnetic recording medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI433433B (en) | A bonded magnet and magnetic roll | |
| JP2922864B2 (en) | Ferrite magnet and manufacturing method thereof | |
| US6419847B1 (en) | Ferrite magnet powder and magnet using said magnet powder, and method for preparing them | |
| WO2001035424A1 (en) | Ferrite magnet powder and magnet using the magnet powder, and method for preparing them | |
| JP3262109B2 (en) | Magnet powder and method for producing the same | |
| JP3506174B2 (en) | Method for producing ferrite magnet and powder thereof | |
| JPH02102506A (en) | Manufacture of magnetic material for permanent magnet | |
| KR102664653B1 (en) | Method for preparing ferrite sintered magnet | |
| JPH01112705A (en) | Manufacture of oxide permanent magnet | |
| JPH02102505A (en) | Manufacture of magnetic material for permanent magnet | |
| KR20210043116A (en) | Method for preparing ferrite sintered magnet | |
| JPH02180004A (en) | Manufacture of anisotropic oxide magnetic powder an of plastic magnet | |
| JP3208739B2 (en) | Manufacturing method of ferrite particle powder material for bonded magnet | |
| JP2906079B2 (en) | Ferrite particle powder material for bonded magnet and method for producing the same | |
| KR102664651B1 (en) | Method for preparing ferrite sintered magnet | |
| WO2023223532A1 (en) | Rubber magnet and door packing for refrigerator | |
| JP2000173812A (en) | Manufacture of anisotropic ferrite magnet | |
| JP2000311811A (en) | W-type ferrite plastic magnet | |
| JP2967827B2 (en) | Hard ferrite powder for composite magnet, compound using the same, and composite magnet | |
| JP3936507B2 (en) | Ferrite magnet manufacturing method | |
| JPH09180926A (en) | Low loss oxide magnetic material | |
| JP2006001752A (en) | Method for production of ferrite magnetic material | |
| JP2000323315A (en) | Ferrite based rubber magnet | |
| JPH11255558A (en) | Production of manganese-zinc-based ferrite core | |
| JPH03160707A (en) | Manufacture of ferrite magnetic powder for anisotropic bonded magnet |