JPS60244004A - Plastic magnet composition - Google Patents
Plastic magnet compositionInfo
- Publication number
- JPS60244004A JPS60244004A JP59099814A JP9981484A JPS60244004A JP S60244004 A JPS60244004 A JP S60244004A JP 59099814 A JP59099814 A JP 59099814A JP 9981484 A JP9981484 A JP 9981484A JP S60244004 A JPS60244004 A JP S60244004A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic powder
- plastic magnet
- plastic
- composition
- magnet composition
- 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
- 239000004033 plastic Substances 0.000 title claims abstract description 32
- 229920003023 plastic Polymers 0.000 title claims abstract description 32
- 239000000203 mixture Substances 0.000 title claims abstract description 22
- 239000006247 magnetic powder Substances 0.000 claims abstract description 28
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 17
- 150000001875 compounds Chemical class 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 5
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 238000000465 moulding Methods 0.000 abstract description 9
- 230000003647 oxidation Effects 0.000 abstract description 7
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 230000007850 degeneration Effects 0.000 abstract 1
- 238000000576 coating method Methods 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 10
- 239000002904 solvent Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 229910052796 boron Inorganic materials 0.000 description 5
- 229920002545 silicone oil Polymers 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 125000000022 2-aminoethyl group Chemical group [H]C([*])([H])C([H])([H])N([H])[H] 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910000722 Didymium Inorganic materials 0.000 description 1
- 241000224487 Didymium Species 0.000 description 1
- 238000001159 Fisher's combined probability test Methods 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000005456 alcohol based solvent Substances 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 229920006334 epoxy coating Polymers 0.000 description 1
- 239000003759 ester based solvent Substances 0.000 description 1
- 239000004210 ether based solvent Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000005453 ketone based solvent Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920003216 poly(methylphenylsiloxane) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- PMTRSEDNJGMXLN-UHFFFAOYSA-N titanium zirconium Chemical compound [Ti].[Zr] PMTRSEDNJGMXLN-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0572—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes with a protective layer
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は高性能を示す新規プラスチック磁石組成物に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to novel plastic magnet compositions that exhibit high performance.
従来より知られている焼結磁石や鋳造磁石は、硬くても
ろいためＣ−複雑な形状の加工が困難であり、精密な加
工度が要求される場合Ｃ二はコスト高となることが避け
られず、また他の部材との一体成形が困難であるとか、
ラジアル異方性、多極異方性磁石を製造しようとしても
破損し製造が困難であるなどの問題がある。Traditionally known sintered magnets and cast magnets are hard and brittle, making it difficult to process C-complex shapes, and C-2 avoids high costs when precision machining is required. Also, it is difficult to integrally mold with other parts.
Even if an attempt is made to manufacture a radial anisotropic or multipolar anisotropic magnet, there are problems such as damage and manufacturing difficulty.
プラスチック磁石は上記問題点を解決するために開発さ
れたものであり、各種磁性材料各種プラスチックの使用
が試みられている。特Ｃ二最近は磁石体の強力化、小型
・軽量化の要請から、当初のころのフェライト系磁性材
料に代ってａｍ−Ｃ。Plastic magnets were developed to solve the above problems, and attempts have been made to use various magnetic materials and various plastics. Special C2 Recently, due to the demand for stronger, smaller, and lighter magnets, am-C has replaced the original ferrite magnetic material.
系のようなきわめてすぐれた磁石性能を発揮する磁性材
料が使用されるに至っている。しかし、 ８ｍは希土類
鉱石中でも特に少ない含有量であることと、その精製分
離に多大の費用を有することからきわめて高価であり、
他方Ｃｏも高価であるのみならず安定供給に問題がある
。Magnetic materials such as those that exhibit extremely excellent magnetic performance have come into use. However, 8m is extremely expensive because it has a particularly low content among rare earth ores and requires a large amount of cost to purify and separate it.
On the other hand, Co is not only expensive but also has problems in stable supply.
本発明者らは鋭意検討した結果、磁性材料（磁性粉体）
としてＮｄ −Ｆｅ −Ｂ系のものを使用することによ
り、比較的低コストで高性能の磁石特性を示すプラスチ
ック磁石組成物が得られること、およびこの磁性粉体は
前記Ｓｍ−Ｃｏ系磁性粉体と同様にプラスチックとの混
合溶融時に高温になると空気との接触で発火しやすい問
題点を有するがこの点は該磁性粉体をあらかじめオルガ
ノポリシロキサン化合物で被覆処理することにより解決
できることを確認し本発明を完成した。As a result of intensive study, the inventors found that magnetic materials (magnetic powder)
By using Nd-Fe-B-based magnetic powder as the magnetic powder, a plastic magnet composition exhibiting high-performance magnetic properties at a relatively low cost can be obtained. Similarly, when mixed with plastic and melted at high temperatures, it is easy to catch fire on contact with air, but we confirmed that this problem could be solved by coating the magnetic powder with an organopolysiloxane compound in advance. Completed the invention.
すなわち本発明は、プラスチックと、オルガノポリシロ
キサン化合物で被覆処理した組成式ＲｘＭｙＢ７ （式
中のＲは希土類元素１Ｍは鉄族元素であり、ｘ、ｙおよ
び２は原子％を示す、ただし８≦Ｘ≦３０．２≦２≦２
０、ｙ＝ｉｏｏ−ｘ−ｚ）で示される磁性粉体とからな
るプラスチック磁石組成物（二関するものである。該組
成式中ＲはＮｄまたはＮｄを主とする希土類元素であり
、ＭはＦｅまたけＦｅを主とする鉄族元素である。実用
上ＲとしてＮｄを主とする２種以上の混合物（ミツシュ
メタル、ジジム等）を使用し、またＭとしてＦｅに少量
のＣＯもしくはＮ１を併用したもの（キューリ一点が向
上する）を使用することが望ましい。なお、Ｂ（ボロン
）にはＡｔ、Ｓｉ、０ などが不純物として混っていて
もよい。組成すなわち原子％を示すｘ＋Ｙおよび２の値
は前記のとおりである。Ｒの量を示すＸの値が大になる
と保磁力Ｈａが向上し望ましいが磁性材粉の取扱いに際
し酸化燃えやすくなるので３０原子％以下とすべきであ
り、好ましくは１０≦Ｘ≦２０の範囲とすることがよい
。またＢの量を示す２の値が大になるとこの場合にも保
磁力Ｈａが増大するがあまりに大きくすると残留磁束密
度Ｂｒが低下するようになるので２０原子％以下とすべ
きであり、好ましくは５≦２≦１５ の範囲とすること
がよい。That is, the present invention provides a composition coated with plastic and an organopolysiloxane compound with the composition formula RxMyB7 (in the formula, R is a rare earth element, 1M is an iron group element, and x, y, and 2 represent atomic percent, provided that 8≦X ≦30.2≦2≦2
0, y=ioo-x-z), and a plastic magnet composition consisting of a magnetic powder represented by Fe is an iron group element mainly composed of Fe.Practically, a mixture of two or more types mainly composed of Nd (mitshu metal, didymium, etc.) is used as R, and a small amount of CO or N1 is used in combination with Fe as M. It is desirable to use B (boron) containing At, Si, 0, etc. as impurities. The values are as described above. It is desirable that the coercive force Ha increases as the value of is preferably in the range of 10 ≦ Therefore, the content should be 20 atomic % or less, preferably within the range of 5≦2≦15.
Ｍの慣を示すｙは残量とされる。なお、保磁力をさらに
向上させるために、Ａｔ、Ｔｉ−Ｚｒ％Ｈｆ。y, which indicates the capacity of M, is the remaining amount. In addition, in order to further improve the coercive force, At, Ti-Zr%Hf.
Ｖ％Ｎｂ％Ｔａ 、 Ｃｒ ％Ｍｏ、Ｗ、Ｍｎ、 Ｓｎ
、Ｐｂ。V%Nb%Ta, Cr%Mo, W, Mn, Sn
, Pb.
Ｓｂ、Ｂ１、Ｃｕ、Ｚｎなどの１種または２種以上を比
較的少量の範囲で添加することは差支えない。One or more of Sb, B1, Cu, Zn, etc. may be added in a relatively small amount.
磁性粉体を製造する方法としては、■原料金属元素（Ｎ
ｄ、Ｆｅ 、 Ｂ等）を所定の配合で高周波溶解してイ
ンゴットをつくり、■これをジヨウクラッシャーおよび
ブラウンミルで３５メツシユ以下の粒度に粗粉砕し、つ
いでボールミルで２〜１０μ程度になるまで微粉砕し、
■磁場中で配向プレス成形し、■アルゴンガス中１００
０〜１２００℃の温度で焼結し、放冷後時効する、■こ
のものを前記■と同様Ｃユして粉砕し、乾燥して磁性粉
体とする方法があげられる。もちろんこれ以外の方法で
磁性粉体を製造してもよい。なお、プラスチック中への
高充填化のためには微粉とやや大きい粒度の粉を混合し
て使用することが望ましく、また多極のラジアル興方性
磁石には極の大きさの１０分の１以下の充分小さな粒径
の粉を用いるとよい。As a method for producing magnetic powder, ■Material metal element (N
d, Fe, B, etc.) in a predetermined composition by high frequency melting, ■ This is coarsely crushed using a Joe crusher and a Brown mill to a particle size of 35 mesh or less, and then finely crushed using a ball mill to a particle size of about 2 to 10 μm. crush,
■ Oriented press molding in a magnetic field, ■ 100% in argon gas
Examples of the method include sintering at a temperature of 0 to 1200° C., aging after cooling, and (2) crushing this material in the same way as in (2) above, followed by drying to obtain magnetic powder. Of course, magnetic powder may be produced by other methods. In addition, in order to highly fill the plastic, it is desirable to use a mixture of fine powder and powder with a slightly larger particle size. It is preferable to use powders with sufficiently small particle sizes as shown below.
上記磁性粉体な被覆処理するために使用されるオルガノ
ポリシロキサン化合物としては、シリコーンオイル〔望
ましくは３０００ｃ８ （２０℃）以上の高分子量シリ
コーンオイル〕、シリコーンゴム、シリコーン樹脂（シ
リコーンワニス）、あるいはそれらの各種変性オルガノ
ポリシロキサンが例示される。The organopolysiloxane compound used to coat the magnetic powder may include silicone oil [preferably high molecular weight silicone oil of 3000c8 (20°C) or higher], silicone rubber, silicone resin (silicone varnish), or any of the above. Examples include various modified organopolysiloxanes.
これらのオルガノポリシロキサンを用いて磁性粉体粉を
被覆するには、通常、このものの有機溶媒溶＃ｉ（被覆
液）を調製し、スプレーあるいは浸漬等の手段により磁
性粉体を被覆処理し、ついで室温ないし１５０℃程度ま
での温度で乾燥するという方法ｆ二よればよい。この場
合の被覆液濃度はおおむね０．１〜１０重量％特には０
．５〜５重量％程度とすればよく、また磁性粉体に対す
るオルガノボリシロキサン化合物の被覆量はおおむね０
０５〜２重量％程度とすればよい。この被覆量が少なす
ぎると酸化防止能が悪くなり、一方多すぎるとコスト高
となるばかりでなく、バインダーとしてのプラスチック
の比率が相対的に低下するので、流動性の面からも磁性
粉体の高充填化の阻害になる。In order to coat magnetic powder using these organopolysiloxanes, usually an organic solvent solution #i (coating liquid) of the organopolysiloxane is prepared, and the magnetic powder is coated by means such as spraying or dipping. Then, method f2 may be used, in which drying is performed at a temperature from room temperature to about 150°C. In this case, the concentration of the coating liquid is approximately 0.1 to 10% by weight, especially 0.
．． The amount may be about 5 to 5% by weight, and the amount of organoborisiloxane compound coated on the magnetic powder is approximately 0.
It may be about 0.05 to 2% by weight. If the amount of coating is too small, the anti-oxidation ability will deteriorate, while if it is too large, not only will the cost be high, but the ratio of plastic as a binder will be relatively reduced, so the magnetic powder will be less effective from the viewpoint of fluidity. This will hinder high filling.
オルガノポリシロキサン化合物を溶解するための溶媒と
しては、脂肪族炭化水素系溶剤、芳香族炭化水素系溶剤
、ハロゲン化炭化水素系溶剤、ケトン系溶剤、エーテル
系溶剤、エステル系溶剤、アルコール系溶剤および水な
どが例示され、これらは１種または２種以上の混合溶媒
として使用される。Solvents for dissolving organopolysiloxane compounds include aliphatic hydrocarbon solvents, aromatic hydrocarbon solvents, halogenated hydrocarbon solvents, ketone solvents, ether solvents, ester solvents, alcohol solvents, and Water is exemplified, and one or more of these are used as a mixed solvent.
本発明にかかわるプラスチック磁石組成物は、前記被覆
処理された磁性粉体とプラスチックとを混合することに
より得られるが、ここに使用されるプラスチックとして
はポリエチレン、ポリプロピレン、ポリスチレン、ポリ
塩化ビニル、アクリレート樹脂等のほか、いわゆるエン
ジニアリングプラスチックと称されているものたとえば
ポリアミド、ポリフェニレンサルファイド、ポリフェニ
レンオキサイド、ポリアセタール、ポリエチレンテレフ
タレート、ポリブチレンテレフタレート、ポリカーボネ
ートなどが例示される。The plastic magnet composition according to the present invention is obtained by mixing the coated magnetic powder and plastic, and examples of the plastic used here include polyethylene, polypropylene, polystyrene, polyvinyl chloride, and acrylate resin. In addition to the above, so-called engineering plastics such as polyamide, polyphenylene sulfide, polyphenylene oxide, polyacetal, polyethylene terephthalate, polybutylene terephthalate, and polycarbonate are exemplified.
本発明によれば磁性粉体をきわめて高い含有率でプラス
チックと混合することができ、組成物中における磁性粉
体含量を最高９５重量％程度まで高めることができる。According to the present invention, magnetic powder can be mixed with plastic at an extremely high content, and the magnetic powder content in the composition can be increased to about 95% by weight at most.
この点従来は成形性ならび一二磁気配同性の点から磁性
粉体の充填密度を高めることが困難であったため、磁気
特性にすぐれたプラスチック磁石を得ることができなか
った。In this regard, in the past, it was difficult to increase the packing density of magnetic powder from the viewpoint of moldability and magnetic alignment, so it was not possible to obtain a plastic magnet with excellent magnetic properties.
プラスチック磁石を得るための成形方法としては、従来
公知の方法たとえば射出成形、押出成形、圧縮成形等の
手段によればよく、成形方法それ自体に制限はない。The molding method for obtaining the plastic magnet may be any conventionally known method such as injection molding, extrusion molding, compression molding, etc., and the molding method itself is not limited.
本発明によればつぎの諸利点が得られる。According to the present invention, the following advantages can be obtained.
（１１高性能のプラスチック磁石を低コストで得ること
ができる。(11 High performance plastic magnets can be obtained at low cost.
（２）磁性粉体は被覆処理されているので成形時に高温
で空気と接触しても酸化変質を受けたり発火したりする
ことがないので、きわめて高磁気特性のプラスチック磁
石が得られる。(2) Since the magnetic powder is coated, it will not undergo oxidative deterioration or catch fire even if it comes into contact with air at high temperatures during molding, so a plastic magnet with extremely high magnetic properties can be obtained.
（３）プラスチックとして２００℃以上のような高温成
形が必要とされるエンジニアリングプラスチックを使用
しても、不都合をともなうことなく、磁性粉体の高充填
成形品を射出成形、押出成形等の成形手段で容易に得る
ことができる。(3) Even if engineering plastics that require high-temperature molding such as 200°C or higher are used, molding methods such as injection molding and extrusion molding can produce highly filled molded products of magnetic powder without causing any inconvenience. can be easily obtained.
このプラスチック磁石は高温下での使用に耐えかつ磁石
特性が経時的変化（劣化）することがなく信頼性の高い
ものである。This plastic magnet can withstand use under high temperatures, and its magnetic properties do not change (degrade) over time, making it highly reliable.
（４）一体成形が簡単であり、複雑な形状に容易に成形
でき、後加工に要するコストが大幅に低減される。(4) Integral molding is simple, it can be easily molded into complex shapes, and the cost required for post-processing is significantly reduced.
（５）性能の高いラジアル異方性、ラジアル多極性のプ
ラスチック磁石を容易に得ることができる。(5) A plastic magnet with high performance radial anisotropy and radial multipolarity can be easily obtained.
（６）得られるプラスチック磁石は均一な磁気性能を示
すものであって、また耐衝撃性が大きいので、リレー、
ブザー等への使用に有利である。(6) The obtained plastic magnet exhibits uniform magnetic performance and has high impact resistance, so it can be used as a relay,
It is advantageous for use in buzzers, etc.
（力 前記したように高温で成形しても酸化変質を受け
ず、発火を起こすというようなことがないので、生産工
程上安全が確保され、また再生使用できその際性能の低
下をともなわない。As mentioned above, even when molded at high temperatures, it does not undergo oxidative deterioration and does not cause ignition, so safety is ensured in the production process, and it can be recycled and used without deteriorating performance.
つぎに参考例および実施例をあげる。Next, reference examples and examples will be given.
参考例１
約２０１ＦＡの秤量ビンに希土類−鉄一ボロン系磁性粉
体Ｎ ｄ １ｓ Ｆ ｅ ７８ Ｂ ７（粒度フィッシ
ャー法で３μ）を２１秤取した。一方、第１表に示す各
種オルガノポリシロキチン化合物の溶媒溶液（いずれも
濃度は０１５重量％）を調製し、これの所定量を前記秤
取試料に加えて全体が均一に湿潤吸着されるようにかく
はんし、ついで６０’Ｃで乾燥して溶剤分を除去し、さ
らに１１０℃で１時間加熱処理した。オルガノポリシロ
キチン化合物の被覆量はそれぞれ同表に示すとおりであ
った。Reference Example 1 Twenty-one pieces of rare earth-iron-boron magnetic powder N d 1s Fe 78 B 7 (particle size: 3 μm by Fisher method) were weighed into a weighing bottle of approximately 201 FA. On the other hand, a solvent solution of various organopolysilochitin compounds shown in Table 1 (all concentrations are 0.15% by weight) was prepared, and a predetermined amount of this was added to the weighed sample so that the entire sample was evenly wet and adsorbed. The mixture was stirred and then dried at 60'C to remove the solvent, and further heat-treated at 110C for 1 hour. The coating amount of the organopolysilochitin compound was as shown in the table.
このようにしてオルガノポリシロキサン化合物で被覆処
理した磁性粉体試料ｌ：ついて耐酸化性を調べるため、
送風式加熱炉中こて開放状態で２０分間２５０℃に加熱
し、下記式によって重量変化率をめた。結果は第１表に
示すとおりであった。Magnetic powder sample l coated with an organopolysiloxane compound in this way: In order to examine the oxidation resistance,
The sample was heated to 250° C. for 20 minutes in a blower heating furnace with the trowel open, and the rate of weight change was calculated using the following formula. The results were as shown in Table 1.
Ｗ２−Ｗ□
Ｗ１々秤置ビンの重さ
ｗ、 ＝ 秤量ビン士試料の重さ
Ｗ３＝＝被覆処理し、１１０℃１時間加熱処理後の重さ
Ｗ、＝２５０℃２０分加熱後の重さ
第１表の結果かられかるとおり、オルガノポリシロキチ
ン化合物で被覆処理を行わなかった試料１１−
第１表中、オルガノポリシロキチン化合物を示の場合に
は酸化Ｃ：よる重量増加が大きかったのに対し、オルガ
ノポリシロキチン化合物で被覆処理したものは重量増加
が小さく、その被覆膜による耐酸化性付与の効果が大で
ある。W2-W□ W1 Weight of the weighing bottle W, = Weight of the sample in the weighing bottle W3 = Weight after coating and heating at 110°C for 1 hour W, = Weight after heating at 250°C for 20 minutes As can be seen from the results in Table 1, in Sample 11, which was not coated with an organopolysilochitin compound, the weight increase due to oxidation C was large in the case of the organopolysilochitin compound shown in Table 1. On the other hand, those coated with an organopolysilochitin compound have a small increase in weight, and the coating film is highly effective in imparting oxidation resistance.
なお、同表に併記したように、従来ブラスチッ物
クー無−戸合材１：おける無機物の表面処理剤として用
いられているＮ−β（アミノエチル）ｒ−アミノプロピ
ルトリメトキシシラン（以下シランＫＢＭ６Ｑ ３と略
記する）を取り上げ検討して見たが、高温加熱時の酸化
による重量増加率が大きく耐酸化防止効果が小さいこと
が判った。さらに従来行われている樹脂コーティング法
としてエポキシコーティング（※下記参照）を取り上げ
検討したが、高温加熱時の酸化による重量増加率が大き
く、本発明の効果とは比較Ｃ：ならないほど悪かった。In addition, as shown in the same table, N-β (aminoethyl)r-aminopropyltrimethoxysilane (hereinafter referred to as silane KBM6Q), which is conventionally used as a surface treatment agent for inorganic materials in plastic composite materials 1: 3) was taken up and examined, and it was found that the weight increase rate due to oxidation during high temperature heating was large and the oxidation prevention effect was small. Furthermore, we considered epoxy coating (see below) as a conventional resin coating method, but the weight increase rate due to oxidation during high-temperature heating was large, and the effect was so bad that it was compared to the effect of the present invention.
（※） シェル化学社製、エビコー）８２８（３％）＋
セメダインｃ （２％）、１５０℃で１時間キュア。(*) Made by Shell Chemical Co., Ltd., Ebiko) 828 (3%) +
Cemedine c (2%), cured at 150°C for 1 hour.
１２− 第 １ 表 す各記号の意味は下記のとおりである。12- Table 1 The meaning of each symbol is as follows.
１）ＫＦ９６ ニジメチルシリコーン油、６，０ＯＯｏ
８（２５℃）、 信越化学工業製
２）ＫＲ２５１：塗料用シリコーン生ゴム、信越化学工
業製
３）ＫＲ２７２ニスリーブ用シリコーンフェス、信越化
学工業製
４）ＫＦ５４ ：メチルフェニルシリコーン油、６．０
００ｃ８（２５℃）、
信越化学工業製
５）ＫＥ７６ＢＳ ： シリコーン生ゴム、信越化学工
業製
（３）ＫＰ３５８：塗料添加用変性シリコーンオイル、
信越化学工業製
１４−
実施例１
１ｔのビーカーに、希土類−鉄一ボロン系磁性粉体 Ｎ
ｄ１．Ｆｅ、、 Ｂ、（フィッシャー粒度３μ）をＩＫ
ｆ秤取し、これに第２表に示すオルガノポリシロキサｙ
化合物の０．５％トルエン溶液を同表の被覆量となるよ
うに添加し、よ（かくはん混合して（要すれば溶媒を追
加して）全体を湿潤させ。1) KF96 Nidimethyl silicone oil, 6,0OOo
8 (25°C), manufactured by Shin-Etsu Chemical 2) KR251: Silicone raw rubber for paint, manufactured by Shin-Etsu Chemical 3) KR272 Silicone face for sleeves, manufactured by Shin-Etsu Chemical 4) KF54: Methylphenyl silicone oil, 6.0
00c8 (25°C), Shin-Etsu Chemical Co., Ltd. 5) KE76BS: Silicone raw rubber, Shin-Etsu Chemical Co., Ltd. (3) KP358: Modified silicone oil for paint addition,
Shin-Etsu Chemical Co., Ltd. 14- Example 1 In a 1 ton beaker, rare earth-iron-boron magnetic powder N
d1. IK Fe, B, (Fisher particle size 3μ)
F is weighed out, and organopolysiloxane y shown in Table 2 is added to it.
Add a 0.5% toluene solution of the compound to the coating amount shown in the table, and mix well (adding a solvent if necessary) to wet the entire area.
ついで６０℃で乾燥して溶剤を揮散させ、さらに１１０
℃で１時間加熱処理した。Next, dry at 60°C to volatilize the solvent, and then dry at 110°C.
Heat treatment was performed at ℃ for 1 hour.
このようにして被覆処理した磁性粉体４４０．１１とＵ
Ｂｇナイロン１２Ｐ−３０１４Ｕ（宇部興産（株）製）
５５．’ｌおよびステアリン酸アミド１．２ｇを１ｔビ
ーカーに秤取し、常温でかくはん後、窒素ガス雰囲気中
ジャケット温度２００℃でプラベンダー社製８−３００
０Ｈ型ンキサーにてかくはん造粒した。Magnetic powder 440.11 coated in this way and U
Bg nylon 12P-3014U (manufactured by Ube Industries, Ltd.)
55. 'l and 1.2 g of stearic acid amide were weighed into a 1 t beaker, stirred at room temperature, and heated to a jacket temperature of 200°C in a nitrogen gas atmosphere using Prabender 8-300.
The mixture was stirred and granulated using an 0H type mixer.
この造粒品をタナベプウギ日つ社製磁場射出成形機’Ｉ
’Ｌ−１５０ＭＧＢを用い、空気中への射出による発火
性ならびに成形品の磁気特性を測定した。This granulated product was molded using a magnetic field injection molding machine manufactured by Tanabe Puugi Nitsu Co., Ltd.
Using 'L-150MGB, ignitability by injection into air and magnetic properties of molded products were measured.
結果は第２表に示すとお曝〕であった。The results are shown in Table 2.
射出成形条件ニジリンダ一温度（ホッパー側から）０１
＝１７０℃、Ｏ，＝２３０℃。Injection molding conditions Niji cylinder temperature (from hopper side) 01
= 170°C, O, = 230°C.
ノズル温度２２０℃、 金型温度９０℃。Nozzle temperature 220℃, mold temperature 90℃.
スクリュー回転数２８ Ｏｒｐｍ（無負荷時の設定）、
配向磁場２０ ｋｏｅ
第２表の結果から表面被覆処理を全く行わなかった場合
には、空気中への射出により瞬時に発火するが、オルガ
ノポリシルキサン化合物による被覆処理を施こすことに
よって顕著な耐酸化性が付与され１発火現象が抑制され
ることが判った。また成形時の負荷の軽減（スクリュー
回転が大になる）と角形性の向上が認められた。Screw rotation speed 28 Orpm (setting at no load),
Orienting magnetic field 20 koe From the results in Table 2, if no surface coating treatment was performed, ignition would occur instantaneously upon injection into the air, but by applying coating treatment with an organopolysiloxane compound, remarkable acid resistance was achieved. It was found that the ignition phenomenon was suppressed. It was also observed that the load during molding was reduced (screw rotation increased) and the squareness was improved.
上記効果によＩ】磁性粉体のナイロン中への配合量を大
幅に高めることができた。Due to the above effects, it was possible to significantly increase the amount of magnetic powder incorporated into nylon.
なお、第２表中に得られた成形品の外観を調べた結果を
併記した。Note that Table 2 also shows the results of examining the appearance of the molded products obtained.
１５−
成形品外観
◎ ： 外観きわめてすぐれている
０ ： 外観普通
△ ： 外観悪い
第２表中処理剤として使用したシリコーンオイル９６■
〜■はそれぞれ下記粘度（２５℃）を有するものである
。15- Appearance of molded product ◎: Very good appearance 0: Fair appearance △: Poor appearance Silicone oil used as a treatment agent in Table 2 96■
~■ have the following viscosity (25°C), respectively.
ＫＦ９６ ■：１００Ｓ ＫＦ９６ ■： １００ ａｓ ＫＦ９６ ■： ３ｏｏｏｏｓ ＫＦ９６■： １万 ０８ ＫＦ９６■： ６万 ０Ｂ ＫＦ９６■： １００万 ０Ｂ −１７−−１６− １６一KF96 ■: 100S KF96 ■: 100 as KF96 ■: 3oooos KF96■: 10,000 08 KF96■: 60,000 0B KF96■: 1 million 0B -17--16- 16 one
Claims (1)
被覆処理した組成式ＲｘＭｙＢ２（式中のＲは希土類元
素、Ｍは鉄族元素であり、Ｘ。 ｙおよび２は原子％を示す、ただし８≦Ｘ≦３０、２≦
２≦２０、ｙ−１００−ｘ −ｚ）で示される磁性粉体
とからなるプラスチック磁石組成物 ２、組成式ＲｘＭｙＢ２ 中のＲがＮｄまたはＮｄを主
とする希土類元素、ＭがＦｅまたはＦｅを主とする鉄族
元素である特許請求の範囲第１項記載のプラスチック磁
石組成物[Claims] 1. Plastic and composition formula RxMyB2 coated with an organopolysiloxane compound (in the formula, R is a rare earth element, M is an iron group element, X. y and 2 represent atomic %, However, 8≦X≦30, 2≦
2≦20, y-100-x-z) Plastic magnet composition 2 consisting of magnetic powder represented by the composition formula RxMyB2, where R is Nd or a rare earth element mainly composed of Nd, and M is Fe or Fe. The plastic magnet composition according to claim 1, which is mainly composed of iron group elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59099814A JPS60244004A (en) | 1984-05-18 | 1984-05-18 | Plastic magnet composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59099814A JPS60244004A (en) | 1984-05-18 | 1984-05-18 | Plastic magnet composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60244004A true JPS60244004A (en) | 1985-12-03 |
Family
ID=14257311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59099814A Pending JPS60244004A (en) | 1984-05-18 | 1984-05-18 | Plastic magnet composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60244004A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63134646A (en) * | 1986-11-26 | 1988-06-07 | Sumitomo Special Metals Co Ltd | Rare earth magnet excellent in corrosion resistance |
| EP0320861A2 (en) * | 1987-12-14 | 1989-06-21 | The B.F. Goodrich Company | Oxidation resistant compositions for use with rare earth magnets |
| US5087302A (en) * | 1989-05-15 | 1992-02-11 | Industrial Technology Research Institute | Process for producing rare earth magnet |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52117326A (en) * | 1976-03-29 | 1977-10-01 | Yoshida Kogyo Kk <Ykk> | Method of coating an extruded aluminum material |
| JPS5662903A (en) * | 1979-10-23 | 1981-05-29 | Hitachi Maxell Ltd | Metal magnetic powder and its treatment |
| JPS5946008A (en) * | 1982-08-21 | 1984-03-15 | Sumitomo Special Metals Co Ltd | Permanent magnet |
-
1984
- 1984-05-18 JP JP59099814A patent/JPS60244004A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52117326A (en) * | 1976-03-29 | 1977-10-01 | Yoshida Kogyo Kk <Ykk> | Method of coating an extruded aluminum material |
| JPS5662903A (en) * | 1979-10-23 | 1981-05-29 | Hitachi Maxell Ltd | Metal magnetic powder and its treatment |
| JPS5946008A (en) * | 1982-08-21 | 1984-03-15 | Sumitomo Special Metals Co Ltd | Permanent magnet |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63134646A (en) * | 1986-11-26 | 1988-06-07 | Sumitomo Special Metals Co Ltd | Rare earth magnet excellent in corrosion resistance |
| EP0320861A2 (en) * | 1987-12-14 | 1989-06-21 | The B.F. Goodrich Company | Oxidation resistant compositions for use with rare earth magnets |
| US5087302A (en) * | 1989-05-15 | 1992-02-11 | Industrial Technology Research Institute | Process for producing rare earth magnet |
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