JPH0344008A - Plastic magnet composition - Google Patents
Plastic magnet compositionInfo
- Publication number
- JPH0344008A JPH0344008A JP1178168A JP17816889A JPH0344008A JP H0344008 A JPH0344008 A JP H0344008A JP 1178168 A JP1178168 A JP 1178168A JP 17816889 A JP17816889 A JP 17816889A JP H0344008 A JPH0344008 A JP H0344008A
- Authority
- JP
- Japan
- Prior art keywords
- pts
- magnetic powder
- thermoplastic resin
- plastic magnet
- less
- 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 16
- 229920003023 plastic Polymers 0.000 title claims abstract description 16
- 239000000203 mixture Substances 0.000 title claims abstract description 14
- 239000006247 magnetic powder Substances 0.000 claims abstract description 21
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 14
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003063 flame retardant Substances 0.000 claims abstract description 9
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910000828 alnico Inorganic materials 0.000 claims abstract description 7
- 239000011230 binding agent Substances 0.000 claims abstract description 6
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims abstract 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052794 bromium Inorganic materials 0.000 claims abstract 2
- 239000002245 particle Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 abstract description 4
- 239000011347 resin Substances 0.000 abstract description 4
- 239000004734 Polyphenylene sulfide Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 229920005672 polyolefin resin Polymers 0.000 abstract description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 abstract description 2
- 239000004800 polyvinyl chloride Substances 0.000 abstract description 2
- 229920000915 polyvinyl chloride Polymers 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 abstract 1
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 abstract 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 abstract 1
- 229920006122 polyamide resin Polymers 0.000 abstract 1
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- BSWWXRFVMJHFBN-UHFFFAOYSA-N 2,4,6-tribromophenol Chemical compound OC1=C(Br)C=C(Br)C=C1Br BSWWXRFVMJHFBN-UHFFFAOYSA-N 0.000 description 1
- VEORPZCZECFIRK-UHFFFAOYSA-N 3,3',5,5'-tetrabromobisphenol A Chemical compound C=1C(Br)=C(O)C(Br)=CC=1C(C)(C)C1=CC(Br)=C(O)C(Br)=C1 VEORPZCZECFIRK-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 1
- 229920000299 Nylon 12 Polymers 0.000 description 1
- 229920002292 Nylon 6 Polymers 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
- 229920006243 acrylic copolymer Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- WHHGLZMJPXIBIX-UHFFFAOYSA-N decabromodiphenyl ether Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br WHHGLZMJPXIBIX-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Landscapes
- 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、アルニコ 磁石を製造する過程で鋳造後焼鈍
されたものを粉砕した磁性粉に熱可塑性樹脂を混合する
ことにより射出成形が可能となり、複雑な形状をもつア
ルニコ磁石を得ることができ、且つ成形品の磁力の温度
特性が優れる難燃性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] (Industrial application field) The present invention enables injection molding by mixing thermoplastic resin with magnetic powder that is pulverized after being cast and annealed in the process of manufacturing alnico magnets. The present invention relates to a flame-retardant plastic magnet composition that can produce alnico magnets with complex shapes and that has excellent temperature characteristics of magnetic force in molded products.
（従来の技術）
従来鋳造磁石としてアルニコ磁石は、歴史的に最も古く
から使用されてきた。しかしながら、その製造方法から
、複雑な形状が取れないなど成形品の形状に制限が生じ
、また威形後威形品にワレ、カケが生ずるという問題が
あり、そのためＯＡ。(Prior Art) Alnico magnets have historically been used as conventional cast magnets for the longest time. However, due to the manufacturing method, there are restrictions on the shape of the molded product, such as the inability to form complex shapes, and there are also problems in that the molded product may crack or chip after being stamped, so OA.
ＦＡＩａ器の小型化、軽薄化のニーズに対応できなくな
っているのが現状である。The current situation is that it is no longer possible to meet the needs for smaller, lighter, and thinner FAIa devices.
またフェライト系磁性粉、サマリウムコバルト系磁性粉
、ネオジウム−鉄−ボロン系磁性粉にバインダーとして
熱可塑性樹脂を混合することで上記問題を解決しうるプ
ラスチック磁石組成物は知られている。しかしながら、
フェライト系磁性粉、ネオジウム−鉄−ボロン系磁性粉
に熱可塑性樹脂を混合したプラスチック磁石組成物は磁
力の温度特性が悪く、特に８０℃以上の高温雰囲気の中
で使用される場合、磁力が大幅に低下してしまうという
問題がある。Furthermore, plastic magnet compositions are known that can solve the above problems by mixing a thermoplastic resin as a binder with ferrite magnetic powder, samarium cobalt magnetic powder, or neodymium-iron-boron magnetic powder. however,
Plastic magnet compositions made by mixing thermoplastic resin with ferrite magnetic powder or neodymium-iron-boron magnetic powder have poor magnetic temperature characteristics, and especially when used in high-temperature atmospheres of 80°C or higher, the magnetic force increases significantly. There is a problem that the value decreases.
またサマリウムコバルト系プラスチック磁石組酸物の場
合は磁力の温度特性は良好なものの、す゛マリウムコハ
ルトのコストが、その資源に制限があるため非常に高く
、工業的にもその利用範囲は極めて限定されたものにな
っているのが現状である。In addition, in the case of samarium cobalt-based plastic magnet assembly, although the temperature characteristics of magnetic force are good, the cost of samarium cobalt is extremely high due to limited resources, and its range of industrial use is extremely limited. The current situation is that
また、ＯＡ、ＦＡｍ器に用いられる場合、高度な難燃性
が要求されることが多いがバインダーとして熱可塑性樹
脂を使用しているため難燃化が難しく、特に肉薄の成形
品でＵＬ９４Ｖ−○を取るには高度な難燃化技術が必要
になってくる。In addition, when used in OA and FAM equipment, a high degree of flame retardancy is often required, but since thermoplastic resin is used as a binder, it is difficult to make it flame retardant, especially for thin molded products. Advanced flame retardant technology will be required to remove this.
（発明が解決しようとする課題）
その目的とするところは、磁力の温度特性が良好で、且
つ高度な難燃性を有し、ノ＼インダーとして熱可塑性樹
脂を含有することで射出成形を可能ならしむることによ
り任意の形状に成形品をデザインすることができ、工業
的にも極めて生産性を向」ニさせることができるプラス
チック磁石組成物を提供することにある。(Problem to be solved by the invention) The purpose is to have good temperature characteristics of magnetic force, high flame retardancy, and to enable injection molding by containing thermoplastic resin as an inder. The object of the present invention is to provide a plastic magnet composition that can be molded into any shape by shaping and can greatly improve industrial productivity.
（課題を解決するための手段）
本発明は、未着磁のアルニコ磁石の平均粒径２００μ以
下の磁性粉１００重量部に対してノ＼インダーとして熱
可塑性樹脂を５〜１００重量部並びに′＃１燃剤として
三酸化アンチモン５〜５０重量部及び臭素系難燃剤２０
〜６０重量部混合してなることを特徴とするプラスチッ
ク磁石Ｍｉ威物である。(Means for Solving the Problems) The present invention provides 5 to 100 parts by weight of a thermoplastic resin as an inder to 100 parts by weight of magnetic powder having an average particle size of 200 μm or less of an unmagnetized alnico magnet, and 5 to 50 parts by weight of antimony trioxide and 20 parts by weight of brominated flame retardant as a flame retardant
This plastic magnet is characterized by being made by mixing ~60 parts by weight of Mi.
本発明において磁性粉として用いられるものは、その主
成分がアルミニウム、ニンケル、コノベルＩ・、鉄であ
れば特に制限を受けず、鋳造後焼鈍されたものであれば
よい。またその粉砕品にシラン系、エポキシ系或いは、
チタネート系の表面処理剤で前処理しても何ら問題はな
い。The magnetic powder used as the magnetic powder in the present invention is not particularly limited as long as its main component is aluminum, ninkel, Konovel I, or iron, and any powder that has been annealed after casting may be used. In addition, silane-based, epoxy-based or
There is no problem in pre-treating with a titanate-based surface treatment agent.
また、バインダーとして用いられる熱可塑性樹脂として
はポリエチレン、ポリプロピレン等のオレフィン系樹脂
、６ナイロン、１２ナイロン等のボリア旦ド樹脂、ポリ
塩化ビニル樹脂、ポリフェニレンサルファイド樹脂、Ｅ
ＶＡ、エチレンエチルアクリｌ／−ト共重合物等熱可塑
性の性質を有するものであれば何ら制限を受ｉＪるもの
ではない。In addition, thermoplastic resins used as binders include olefin resins such as polyethylene and polypropylene, boria resins such as nylon 6 and nylon 12, polyvinyl chloride resins, polyphenylene sulfide resins, and
There are no limitations as long as it has thermoplastic properties such as VA, ethylene ethyl acrylic copolymer, etc.
しかしながら、その添加量において磁性粉１００重量部
に対して熱可塑性樹脂を５重量部以下または磁性粉の平
均粒径が２００μｍ以上になると射出成形性が極めて悪
くなりまた磁性粉が成形品表面より離脱するなど工業的
に利用できるプラスチック磁石組成物にはならない。However, if the added amount is less than 5 parts by weight of thermoplastic resin per 100 parts by weight of magnetic powder, or if the average particle size of the magnetic powder is 200 μm or more, injection moldability becomes extremely poor and the magnetic powder separates from the surface of the molded product. However, it is not possible to create a plastic magnet composition that can be used industrially.
また、熱可塑性樹脂が１００重量部をこすと高い難燃性
を得ることができなくなる。また本発明にある磁性粉を
用いる理由としては、他の磁性粉に比べて磁力の温度依
存性が極めて少ないためであり、月つコスＩ・的にも、
サマリウムコバルトのような高価な磁性粉を用いるより
も安価であり工業的にも優れたものである。Furthermore, if the thermoplastic resin exceeds 100 parts by weight, high flame retardance cannot be obtained. In addition, the reason for using the magnetic powder of the present invention is that the temperature dependence of magnetic force is extremely small compared to other magnetic powders, and in terms of monthly cost I.
It is cheaper and industrially superior to using expensive magnetic powder such as samarium cobalt.
特に家電製品においては、使用中に機械内部の温度が上
昇し、これによりフェライト系磁性粉を用いたプラスチ
ンク磁石では、大幅な磁力の低下をきたし、特に映像機
器においては、画像の乱れが生ずるなどの問題がある。Particularly in home appliances, the temperature inside the machine rises during use, causing a significant drop in magnetic force in plastic magnets using ferrite magnetic powder, and especially in video equipment, causing image distortion. There are other problems.
このような分野なかでもテレビのセンタリング用におい
て本発明によるプラスチンク磁石を用いることにより前
述のような問題が解決でき有効である。Among these fields, the use of the plastic magnet according to the present invention for centering televisions is effective in solving the above-mentioned problems.
また、Ｍ燃剤として使用される三酸化アンチモン、臭素
系難燃剤の混合量については、特許請求の範囲に記載し
た配合量以下ではＵＬ９４Ｖ−〇（厚Ｍ１．．５ｍｍ）
の難燃性は得られず、また逆にその量が多くて射出成形
性が悪くなり、またコスト的にも高価なものになるため
工業的に優れたものにはならない。Regarding the mixing amount of antimony trioxide and brominated flame retardant used as M flame retardants, if the mixing amount is less than the amount described in the claims, it will be UL94V-〇 (thickness M1..5 mm).
The flame retardance cannot be obtained, and on the other hand, the large amount thereof deteriorates injection moldability, and the cost is also high, so it is not industrially superior.
本発明において用いられる臭素系難燃剤としては、デカ
ブロモジフェニールエーテル、ヘキサブロモヘンゼン、
トリブロモフェノール、Ｉｉ 化ポリエチレン、テトラ
ブロモビスフェノールＡ系等があげられるが、特に制限
を受けるものではない。Brominated flame retardants used in the present invention include decabromodiphenyl ether, hexabromohenzene,
Examples include tribromophenol, Ii-based polyethylene, and tetrabromobisphenol A, but there are no particular limitations.
（実施例）
（検討例１）
第１表に示ず組成のものをヘンシェルミキサーで混合し
、二軸連続押出板でフィーダー側より２００°Ｃ１２３
０°Ｃ１２５０°Ｃの温度で溶融滌練し造粒機で造粒し
たペレットを２，５オンスの射出成形機で、ホッパー側
より２２０°、２４０°ノズル部２５０°Ｃの温度で磁
力測定用試験片を作製し、振動試料型磁気測定機（ＶＳ
Ｍ）で、２５°Ｃでの磁力、１００°Ｃでの磁力を測定
した。(Example) (Study example 1) Mix the compositions not shown in Table 1 in a Henschel mixer, and use a biaxial continuous extrusion plate at 200°C 123°C from the feeder side.
Melt and knead the pellets at a temperature of 0°C and 1250°C and granulate them using a granulator, then use a 2.5 ounce injection molding machine to measure magnetic force at a temperature of 220° and 240° from the hopper side and 250°C at the nozzle part. A test piece was prepared, and a vibrating sample type magnetometer (VS
M), the magnetic force at 25°C and the magnetic force at 100°C were measured.
（検討例２）
第２表に示す組成のものを検討例１に示すように混練後
１２．５Ｘ１２７．５Ｘ１．５の成形品を作製し、ＵＬ
９４Ｖ−０試験及び射出成形性を確認した。(Study Example 2) After kneading the composition shown in Table 2 as shown in Study Example 1, a molded product of 12.5 x 127.5 x 1.5 was produced, and the UL
94V-0 test and injection moldability were confirmed.
第
表
′ｌ
第
表
注：日産フェロー■製パイロチエツク６８ＰＢ（発明の
効果）
本発明によるプラスチック磁石組成物を用いることによ
り射出成形が可能となり生産性が向上し、またフェライ
ト系、プラスチック磁石の欠点であった磁力の温度依存
性が極めて小さく且つ高い難燃性を有するプラスチック
磁石組成物として工業的に好適である。利用分野として
はＯＡ機器、家電製品特にテレビのセンタリングマグネ
ットにおいて最適である。Table 'l Table Note: Pyrocheck 68PB manufactured by Nissan Ferro ■ (Effects of the invention) By using the plastic magnet composition of the present invention, injection molding becomes possible, productivity is improved, and the disadvantages of ferrite and plastic magnets are improved. It is industrially suitable as a plastic magnet composition having extremely small temperature dependence of magnetic force and high flame retardancy. It is most suitable for use in office automation equipment, home appliances, and especially centering magnets for televisions.
Claims (1)
磁性粉１００重量部に対してバインダーとして熱可塑性
樹脂を５〜１００重量部並びに難燃剤として三酸化アン
チモン５〜５０重量部及び臭素系難燃剤２０〜６０重量
部混合してなることを特徴とするプラスチック磁石組成
物。(1) 5 to 100 parts by weight of a thermoplastic resin as a binder and 5 to 50 parts by weight of antimony trioxide and bromine as a flame retardant to 100 parts by weight of magnetic powder with an average particle size of 200 μm or less of an unmagnetized alnico magnet. A plastic magnet composition comprising 20 to 60 parts by weight of a flame retardant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1178168A JPH0344008A (en) | 1989-07-12 | 1989-07-12 | Plastic magnet composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1178168A JPH0344008A (en) | 1989-07-12 | 1989-07-12 | Plastic magnet composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0344008A true JPH0344008A (en) | 1991-02-25 |
Family
ID=16043804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1178168A Pending JPH0344008A (en) | 1989-07-12 | 1989-07-12 | Plastic magnet composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0344008A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS577905A (en) * | 1980-06-18 | 1982-01-16 | Daido Steel Co Ltd | Manufacture of anisotropic resin magnet |
| JPS62242317A (en) * | 1986-04-14 | 1987-10-22 | Kanegafuchi Chem Ind Co Ltd | Flame resistive resin magnet |
| JPS6332903A (en) * | 1986-07-25 | 1988-02-12 | Kanegafuchi Chem Ind Co Ltd | Flame-retardant bonded magnet |
-
1989
- 1989-07-12 JP JP1178168A patent/JPH0344008A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS577905A (en) * | 1980-06-18 | 1982-01-16 | Daido Steel Co Ltd | Manufacture of anisotropic resin magnet |
| JPS62242317A (en) * | 1986-04-14 | 1987-10-22 | Kanegafuchi Chem Ind Co Ltd | Flame resistive resin magnet |
| JPS6332903A (en) * | 1986-07-25 | 1988-02-12 | Kanegafuchi Chem Ind Co Ltd | Flame-retardant bonded magnet |
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