JPS6369204A - Composite for magnet - Google Patents
Composite for magnetInfo
- Publication number
- JPS6369204A JPS6369204A JP61211466A JP21146686A JPS6369204A JP S6369204 A JPS6369204 A JP S6369204A JP 61211466 A JP61211466 A JP 61211466A JP 21146686 A JP21146686 A JP 21146686A JP S6369204 A JPS6369204 A JP S6369204A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- weight
- pts
- acid anhydride
- butene copolymer
- 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
- 239000002131 composite material Substances 0.000 title 1
- 239000000203 mixture Substances 0.000 claims abstract description 32
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 229920006026 co-polymeric resin Polymers 0.000 claims abstract description 11
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 11
- 229920002545 silicone oil Polymers 0.000 claims abstract description 11
- 239000002253 acid Substances 0.000 claims description 9
- WXCZUWHSJWOTRV-UHFFFAOYSA-N but-1-ene;ethene Chemical class C=C.CCC=C WXCZUWHSJWOTRV-UHFFFAOYSA-N 0.000 claims description 8
- 239000000843 powder Substances 0.000 abstract description 19
- 239000002904 solvent Substances 0.000 abstract description 11
- -1 acid anhydride modified ethylene-butene Chemical class 0.000 abstract description 10
- 230000005294 ferromagnetic effect Effects 0.000 abstract description 9
- 229920001577 copolymer Polymers 0.000 abstract description 6
- 239000004743 Polypropylene Substances 0.000 abstract description 3
- 150000008065 acid anhydrides Chemical class 0.000 abstract description 3
- 238000013329 compounding Methods 0.000 abstract description 3
- 229920000573 polyethylene Polymers 0.000 abstract description 3
- 229920001155 polypropylene Polymers 0.000 abstract description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical group C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract description 2
- 239000005977 Ethylene Substances 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract 2
- 238000010559 graft polymerization reaction Methods 0.000 abstract 1
- 239000003973 paint Substances 0.000 description 17
- 239000004033 plastic Substances 0.000 description 12
- 229920003023 plastic Polymers 0.000 description 12
- 230000005291 magnetic effect Effects 0.000 description 11
- 229920001971 elastomer Polymers 0.000 description 7
- 239000005060 rubber Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000002390 adhesive tape Substances 0.000 description 4
- 230000000873 masking effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010422 painting Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 229910000859 α-Fe Inorganic materials 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
- 229920000800 acrylic rubber Polymers 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004709 Chlorinated polyethylene Substances 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229910001035 Soft ferrite Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920003216 poly(methylphenylsiloxane) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 210000001364 upper extremity Anatomy 0.000 description 1
Landscapes
- Hard Magnetic Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
音業上の利用分野
本発明は、特に塗装時のマスキング用磁石シートなどに
好適に用いられるプラスチック磁石用組成物に関するも
のである。さらに詳しくいえば、本発明は、バインダー
成分として、酸無水物変性エチレン−ブテン共重合体樹
脂とポリオレフィン樹脂との樹脂混合物を用い、かつシ
リコンオイルを併用することにより、たわみ性、耐衝１
注、塗料剥離性、耐溶剤性など全向上させた新規なプラ
スチック磁石用組成物に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Application in the Music Industry The present invention relates to a composition for a plastic magnet, which is particularly suitable for use as a magnet sheet for masking during painting. More specifically, the present invention uses a resin mixture of an acid anhydride-modified ethylene-butene copolymer resin and a polyolefin resin as a binder component, and also uses silicone oil to improve flexibility and impact resistance.
Note: This relates to a new composition for plastic magnets that has improved paint removability, solvent resistance, etc.
従来の技術
プラスチックやゴムの中に強磁性体粉末を分散させ、こ
れに磁界を印加して得られる永久磁石は、公知である（
例えば特公昭３７−３３２１号公報、特公昭４７−４８
３５６号公報）。これらの永久磁石のバインダーとして
は、通常、ポリエチレン、ポリプロピレン、塩素化ポリ
エチレン、ポリ塩化ビニル、エチレン−酢酸ビニル共重
合体、ポリアミド、合成ゴムなどが用いられているが、
この加工特注の改善のために特定のアクリル系エラスト
マーを用いたもの（特開昭５８−９６７０２号公報）や
、磁気特性を向上させるためにトルエンスルホン酸アミ
ドを添加したポリアミドを用い念もの（特公昭５９−２
３４４５号公報）も提案されている。Prior Art Permanent magnets obtained by dispersing ferromagnetic powder in plastic or rubber and applying a magnetic field to it are well known (
For example, Japanese Patent Publication No. 37-3321, Japanese Patent Publication No. 47-48
Publication No. 356). As binders for these permanent magnets, polyethylene, polypropylene, chlorinated polyethylene, polyvinyl chloride, ethylene-vinyl acetate copolymer, polyamide, synthetic rubber, etc. are usually used.
In order to improve this custom-made processing, a specific acrylic elastomer is used (Japanese Unexamined Patent Publication No. 58-96702), and a special acrylic elastomer is used to improve magnetic properties. Kosho 59-2
No. 3445) has also been proposed.
ところで、塗装時には通常、所望の箇所のみ全塗装する
目的で、不必要な個所をマスキングすることが行われて
いる。このマスキングには、これまで粘着テープが用い
ら九、塗料を付着させたくない部分に該粘着テープを貼
り付けておいて、塗装復刊がして廃棄するという方法が
とられている。By the way, when painting, unnecessary parts are usually masked in order to completely paint only the desired parts. Up until now, adhesive tape has been used for this masking, but the method used is to attach the adhesive tape to the areas where you do not want the paint to adhere, paint it again, and then discard it.
しかしながら、この方法においては、粘着テープ全所望
の形状に合わせて貼り付ける必要があるために、作業性
が悪く、その上肢粘着テープは使い捨てるので不経済で
あるなどの問題ｆ！：１’ｉ−している。However, this method has problems such as poor workability as it is necessary to apply the entire adhesive tape to the desired shape, and it is uneconomical as the upper limb adhesive tape is disposable. :1'i-doing.
そこで、作業性全改善するために、近年脱着容易なマグ
ネットシートの使用が試みられている。Therefore, in order to completely improve workability, attempts have been made in recent years to use magnetic sheets that are easy to attach and detach.
この場合、該マグネットシートとしては、特に塗料剥離
性、耐溶剤性に優九るものが要求され、さらにこのもの
は、これらの特性に加えてｌｉｔ衝撃性や可撓性の良好
なものが望ましい。In this case, the magnetic sheet is required to have excellent paint removability and solvent resistance, and in addition to these properties, it is also desirable to have good lit impact resistance and flexibility. .
しかしながら、従来のゴム磁石やプラスチック磁石から
成るマグネットシートは、塗料との接着性が強く、塗料
剥離性が悪い上に、ゴム磁石から成るものでは、可撓性
はよいが耐溶剤性に劣るという欠点を有しており、また
プラスチック磁石から成るものでは、耐溶剤性は優れて
いるが、可撓性、耐衝１性に劣るという欠点を肩してい
る。However, conventional magnet sheets made of rubber magnets and plastic magnets have strong adhesion to paint and poor paint removability, and those made of rubber magnets have good flexibility but poor solvent resistance. Moreover, those made of plastic magnets have excellent solvent resistance, but suffer from the disadvantages of poor flexibility and impact resistance.
特に、該マグネットシートにおいては、塗料剥離性が重
要で、これが悪いと、塗料が剥離しにくいので、繰り返
し使用する場合に、塗料の堆積により、該シートのたわ
み性がそこなわれて、被着体に密着しなくなり、該シー
トの繰り返し使用が不可能となる。In particular, the paint removability of the magnetic sheet is important; if this is poor, the paint will be difficult to peel off, so when used repeatedly, the flexibility of the sheet will be damaged due to the buildup of paint, causing the adhesion to deteriorate. The sheet no longer adheres closely to the body, making it impossible to use the sheet repeatedly.
発明が解決しようとする問題点
本発明は、このような事情のもとで、特に塗装時のマス
キング用磁石シートなどに好適な、塗料剥離性、耐溶剤
性、耐衝撃性、たわみ性などに優れた新規なプラスチッ
ク磁石用組成物を提供することを目的としてなされたも
のである。Problems to be Solved by the Invention Under these circumstances, the present invention has been developed to improve paint removability, solvent resistance, impact resistance, flexibility, etc., which is particularly suitable for masking magnetic sheets during painting. This was done with the aim of providing an excellent new composition for plastic magnets.
問題点を解決するための手段
本発明者へは、前記の優れた性質を有するプラスチック
磁石用組成物を開発するために鋭意研究を重ねた結果、
バインダー成分として、酸無水物変性エチレン−ブテン
共重合体樹脂とポリオレフィン樹脂とを所定の割合で含
有する樹脂混合物を用い、かつシリコーンオイルを併用
することにより、その目的を達成しうろことを見出し、
この知見に基づいて本発明を完成するに至った。Means for Solving the Problems As a result of extensive research in order to develop a composition for plastic magnets having the above-mentioned excellent properties, the present inventors have discovered the following:
We have discovered that this objective can be achieved by using a resin mixture containing an acid anhydride-modified ethylene-butene copolymer resin and a polyolefin resin in a predetermined ratio as a binder component, and by using silicone oil in combination,
Based on this knowledge, we have completed the present invention.
すなわち、本発明は、（Ａ）酸無水物変性エチレン−ブ
テン共重合体樹脂５０〜９０ｉ量チとポリオレフィン樹
脂５０〜１０重量％から成る樹脂混合物１２〜２５重量
部と、（Ｂ）強磁性体粉末８８〜７５重量部とをその合
計量が１００！量部になるように配合し、さらにこの１
００重量部に対して、（Ｃ）シリコーンオイル１〜１０
重量部２配合して成るプラスチック磁石用組成物を提供
するものである。That is, the present invention comprises (A) 12 to 25 parts by weight of a resin mixture consisting of 50 to 90 parts by weight of an acid anhydride-modified ethylene-butene copolymer resin and 50 to 10 parts by weight of a polyolefin resin, and (B) a ferromagnetic material. 88 to 75 parts by weight of powder and the total amount is 100! Add this 1 part to the desired amount.
00 parts by weight, (C) silicone oil 1-10
The present invention provides a composition for a plastic magnet comprising 2 parts by weight.
以下、本発明の詳細な説明する。The present invention will be explained in detail below.
本発明組成物においては、ＧＡ）成分のバインダーとし
て、酸無水物変性エチレン−ブテン共重合体樹脂とポリ
オレフィン樹脂との樹脂混合物が用いられる。前記酸無
水物変性エチレン−ブテン共重合体樹脂は、例えばエチ
レン単位とブテン単位とを重敬比１：９ないし９：１の
範囲で含むエチレン−ブテン共重合体に、無水マレイン
酸、α−メチル無水マレイン酸のような不飽和酸無水物
金グラット重合させて得られるもので、この酸無水物の
含育量は、共重合体全量に基づき０．０１〜１．０重量
％程度が適当である。この量が０．０１重量％よりも少
ないと強磁性体粉末に対する結合力が不十分であるし、
また１、０重量％よりも多くなると物理的、化学的特性
の骨格となるエチレン−ブテン共重合体本来の性質がそ
こなわれる。また、この酸無水物変性エチレン−ブテン
共重合体は、ＡＳＴＭ Ｄ−１２３８に従って測定した
メルトインデックス（ｒ／１０分）が８〜２０の範囲の
ものが好適である。In the composition of the present invention, a resin mixture of an acid anhydride-modified ethylene-butene copolymer resin and a polyolefin resin is used as the binder for the GA) component. The acid anhydride-modified ethylene-butene copolymer resin is, for example, an ethylene-butene copolymer containing ethylene units and butene units in a weight ratio of 1:9 to 9:1, maleic anhydride, α-methyl It is obtained by gold glat polymerization of an unsaturated acid anhydride such as maleic anhydride, and the appropriate content of this acid anhydride is about 0.01 to 1.0% by weight based on the total amount of the copolymer. be. If this amount is less than 0.01% by weight, the binding force to the ferromagnetic powder will be insufficient,
Moreover, if the amount exceeds 1.0% by weight, the original properties of the ethylene-butene copolymer, which is the backbone of physical and chemical properties, will be impaired. The acid anhydride-modified ethylene-butene copolymer preferably has a melt index (r/10 min) in the range of 8 to 20 as measured according to ASTM D-1238.
一方、ポリオレフィン樹脂としては、メルトインデック
スが５〜２０の範囲にあるポリエチレン、ポリプロピレ
ン、ポリブテン−１、エチレン−プロピレン共重合体な
どがある。これらは単独で用いてもよいし、また２種以
上混合して用いてもよい。On the other hand, examples of polyolefin resins include polyethylene, polypropylene, polybutene-1, and ethylene-propylene copolymers having a melt index in the range of 5 to 20. These may be used alone or in combination of two or more.
本発明組成物における（Ａ）成分の樹脂混合物は、前記
の酸無水物変性エチレン−ブテン共重合体樹脂及びポリ
オレフィン樹脂を、それぞ０５０〜９０重量％及び５０
〜１０ｉ量チ、好ましくは６０〜８０重量％及び４０〜
２０重量％の割合で含有することが必要である。核酸無
水物変性エチレン−ブテン共重合体樹脂の含有量が５０
重量％未満では可撓性が不十分であるし、また９０重量
％を超えると塗料剥離性が不十分となる。The resin mixture of component (A) in the composition of the present invention contains 050 to 90% by weight and 50% by weight of the acid anhydride-modified ethylene-butene copolymer resin and polyolefin resin, respectively.
~10i amount, preferably 60-80% by weight and 40~
It is necessary to contain it in a proportion of 20% by weight. The content of nucleic acid anhydride-modified ethylene-butene copolymer resin is 50
If it is less than 90% by weight, the flexibility will be insufficient, and if it exceeds 90% by weight, the paint removability will be insufficient.
本発明組成物において、（Ｂ）成分として用いられる強
磁性体粉末としては、例えばフェライト磁石粉末、コバ
ルト磁石粉末、希土類・コバルト磁石粉末、希土類・鉄
・ホウ素磁石粉末、アルニコ磁石粉末、マンガン・アル
ミニウム・炭素磁石粉末、ソフトフェライト粉末、パー
マロイ粉末など、これまでゴム磁石やプラスチック磁石
の強磁性体粉末として通常使用されているものの中から
任意のものを用いることができる。In the composition of the present invention, examples of the ferromagnetic powder used as component (B) include ferrite magnet powder, cobalt magnet powder, rare earth/cobalt magnet powder, rare earth/iron/boron magnet powder, alnico magnet powder, manganese/aluminum magnet powder. - Any material can be used from among those commonly used as ferromagnetic powders for rubber magnets and plastic magnets, such as carbon magnet powder, soft ferrite powder, and permalloy powder.
一般のゴム磁石やプラスチック磁石においては、磁気特
性に優ｎた磁石を得るためには、できるだけ該強磁性体
粉末の配合量を多くすることが好ましいが、他方、ゴム
磁石やプラスチック磁石に適した物性全方することも要
求されるので、その配合量にはおのずから制限がある。In general rubber magnets and plastic magnets, in order to obtain a magnet with excellent magnetic properties, it is preferable to increase the blending amount of the ferromagnetic powder as much as possible. Since all physical properties are required, there is naturally a limit to the amount of the compound to be added.
本発明組成物における前記（−Ａ）成分の樹脂混合物と
（Ｂ）成分の強磁性体粉末との配合割合については。Regarding the blending ratio of the resin mixture as the component (-A) and the ferromagnetic powder as the component (B) in the composition of the present invention.
該樹脂混合物１２〜２５重量部と該強磁性体粉末８８〜
７５重量部とを、その合計量が１００Ｍ量部になるよう
に配合することが必要である。該樹脂混合物の配合量が
１２重量部未満では念わみ性が不十分であるし、また２
５重量部を超えると磁気特性が低下して好ましくない。12 to 25 parts by weight of the resin mixture and 88 to 88 parts by weight of the ferromagnetic powder
75 parts by weight, so that the total amount is 100 M parts. If the blending amount of the resin mixture is less than 12 parts by weight, the flexibility will be insufficient;
If it exceeds 5 parts by weight, the magnetic properties will deteriorate, which is not preferable.
本発明組成物において用いらｎる（Ｃ）成分のシリコー
ンオイルとしては、例えばジメチルシリコーンオイル、
メチルフェニルシリコーンオイル、変性シリコーンオイ
ル（−ＲＯＨ基を万する）などが挙げられ、これらは１
種用いてもよいし、２種以上組み合わせて用いてもよい
。この（Ｃ）成分のシリコーンオイルの配合量について
は、前記の（ハ成分と（Ｂ）成分との合計１００Ｍ量部
に対し、（Ｃ）成分が１〜１０重量部、好ましくは３〜
７重量部になるような割合で配合することが必要である
。この（Ｃ）成分の配合量が１重量部未満では塗料剥離
性が不十分であり、また１０重量部を超えると加工性が
低下する。Examples of the silicone oil as component (C) used in the composition of the present invention include dimethyl silicone oil,
Examples include methylphenyl silicone oil, modified silicone oil (with -ROH group), etc.
One species may be used, or two or more species may be used in combination. Regarding the blending amount of the silicone oil as component (C), the amount of component (C) is 1 to 10 parts by weight, preferably 3 to 10 parts by weight, based on the total of 100 M parts of component
It is necessary to mix the ingredients in a proportion of 7 parts by weight. If the amount of component (C) is less than 1 part by weight, the paint releasability will be insufficient, and if it exceeds 10 parts by weight, processability will decrease.
本発明組成物には、所望に応じ通常のポリオレフィン系
樹脂に慣用されている添加剤、例えば抗酸化剤、紫外線
吸収剤、滑剤などを配合することができる。抗酸化剤を
配合することにより、安定した性能及び耐久性を向上す
ることができるし、紫外線吸収剤を配合することにより
、屋外における使用時の耐久性を向上することができ、
また滑剤を配合することによシ、加工性を向上すること
ができる。The composition of the present invention may contain additives commonly used in ordinary polyolefin resins, such as antioxidants, ultraviolet absorbers, and lubricants, as desired. By incorporating an antioxidant, stable performance and durability can be improved, and by incorporating an ultraviolet absorber, durability when used outdoors can be improved.
Furthermore, processability can be improved by adding a lubricant.
本発明組成物は、前記各成分を混合し、１！ｆ＠成分を
加熱溶融させ、十分に混練することにより調製すること
ができ、また該組成物は押出成形、圧延成形、射出成形
、圧縮成形などによシ適当な形状に成形することができ
る。この際の加熱温度としては、樹脂のみで成形する場
合より、１０〜３０℃程度高い温度が好ましい。The composition of the present invention is prepared by mixing the above-mentioned components and preparing 1! It can be prepared by heating and melting the f@ component and thoroughly kneading it, and the composition can be molded into a suitable shape by extrusion molding, rolling molding, injection molding, compression molding, etc. The heating temperature at this time is preferably about 10 to 30°C higher than when molding only with resin.
本発明組成物において、強磁性体粉末として異方性のも
のを用いる場合には、磁場配同型にあっては、磁場配向
させながら、押出成形、射出成形、圧縮成形することが
できるし１機械配向型にあっては、圧延成形、又は押出
成形時の機械的な力によって配向させ、成形することが
できる。In the case of using an anisotropic ferromagnetic powder in the composition of the present invention, in the case of a magnetic field alignment type, extrusion molding, injection molding, or compression molding can be performed while oriented in a magnetic field. In the case of an oriented mold, the material can be oriented and molded by mechanical force during rolling or extrusion molding.
発明の効果
本発明のプラスチック磁石用組成物は、バインダー成分
として、酸無水物変性エチレン−ブテン共重合体樹脂と
ポリオレフィン樹脂との樹脂混合物を用い、かつシリコ
ーンオイルを併用することにより、可撓性、耐衝撃性、
塗料剥離性、耐溶剤性などを向上させたものであり、特
に塗装時のマスキング用磁石シートなどに好適に用いら
れる。Effects of the Invention The composition for plastic magnets of the present invention uses a resin mixture of an acid anhydride-modified ethylene-butene copolymer resin and a polyolefin resin as a binder component, and also uses silicone oil to improve flexibility. , impact resistance,
It has improved paint removability, solvent resistance, etc., and is particularly suitable for use in magnetic sheets for masking during painting.
実施例 次に実施例により本発明をさらに詳細に説明する。Example Next, the present invention will be explained in more detail with reference to Examples.
なお、各側における組成物の特性は次のようにして求め
た。The properties of the composition on each side were determined as follows.
（１） 可撓性
直径２０關から１５．１０．５．３．２ｎまでの丸棒を
用い、２０℃にて、太い方から細い方に順次試料を巻き
付け、亀裂又は割れを生じるまでこれを続け、亀裂又は
割れを生じない最小の直径値によって災わした。(1) Using a flexible round bar with a diameter of 20 mm to 15.10.5.3.2 nm, wrap the sample at 20°C in order from the thickest side to the thinnest side until cracks or cracks occur. Continuing, the smallest diameter value that does not result in cracking or cracking is a problem.
（２）塗料剥離性
試料に塗料を、塗布厚（ウェット）が０．２ｉｎ（ドラ
イ約ｏ、ｘｍ）になるように、試料の両端にスペーサー
をおいて、バーコーターで塗布し、２０℃にて２４時間
放置乾燥後、塗膜の剥離性を観察し、次の判定基準に従
って評価した。(2) Paint removability Apply paint to the sample using a bar coater with spacers placed at both ends of the sample so that the coating thickness (wet) is 0.2 inches (dry approximately 0, x m), and heat to 20°C. After drying for 24 hours, the peelability of the coating film was observed and evaluated according to the following criteria.
Ａ： 容易に剥離できる。A: It can be easily peeled off.
Ｂ： 剥離可能。B: Peelable.
Ｃ： 剥離困難。C: Difficult to peel off.
Ｄ： 剥離不能。D: Unremovable.
（３）耐溶剤性
ＡＳＴＭ Ｄ ５４３に規定された方法に従って、厚さ
０．６正の試料を２０℃に保持した各溶剤に浸漬し、７
日後の容積変ｆヒ率を求めた。(3) Solvent resistance According to the method specified in ASTM D 543, a 0.6-thick sample was immersed in each solvent kept at 20°C, and
The rate of change in volume after 1 day was determined.
実施例１
第１表に示す配合割合で各成分をかきまぜ混会し、これ
を押出機（スクリュー径４Ｑｍ、い１５、単軸スクリュ
ー）にて、シリンダ一温度１９０〜２２０℃、ダイス温
度２２０℃の条件で、断面２Ｘ６Ｑｔｘのシート状物を
２ｍ／分のスピードで押出した。Example 1 Each component was stirred and mixed in the proportions shown in Table 1, and the mixture was heated in an extruder (screw diameter 4Qm, diameter 15, single screw) at a cylinder temperature of 190 to 220°C and a die temperature of 220°C. Under these conditions, a sheet-like material with a cross section of 2 x 6 Qtx was extruded at a speed of 2 m/min.
次に、ダイスに近設して付設した２本ロール（表面温度
８０〜９０℃）にて圧延を行い、断面０．６Ｘ６０１ｍ
＋のシート状物に成形し、このものの各特性を求めた。Next, rolling was performed using two rolls (surface temperature 80 to 90°C) attached close to the die, and the cross section was 0.6 x 601 m.
It was molded into a sheet-like product with a rating of +, and its properties were determined.
その結果を第３表に示す。The results are shown in Table 3.
実施例２〜４、比較例１〜４
第１表に示す割合で各成分を用い、実施例１と全く同様
にして、シート状物全作成し、このものの各特性を求め
た。その結果を第３表に示す。Examples 2 to 4, Comparative Examples 1 to 4 All sheet-like products were prepared in exactly the same manner as in Example 1 using each component in the proportions shown in Table 1, and the respective properties of the products were determined. The results are shown in Table 3.
注１）、２）
密度（５’／ｉ）ＡＳＴＭＤ−１５０５０，９１０，９
１無水マレイン酸含Ｍ量（重ｉ％） ０．０２
０密度（Ｐ／ｍ） ＡＳＴＭ Ｄ−１５０５０，９
２密度（ｆ／ｅｎｌ ） ＡＥＩＴＭ Ｄ−１５０５０
，９０７）異方性、機械配向型、平均粒子径１．３μｍ
比較例５
第２表に示す配合割合に従って各成分を２本ロールで混
練後（ロール表面温度約７０℃）、２本ロールで約０．
４騙厚に圧延した。次に、このものを３枚重ねて、２本
ロールにて０．６１１１１厚に積層圧延し、このものの
各特性を求めた。その結果を第３表に示す。Notes 1), 2) Density (5'/i) ASTM D-15050,910,9
1 Maleic anhydride content M amount (weight i%) 0.02
0 density (P/m) ASTM D-15050,9
2 density (f/enl) AEITM D-15050
,907) Anisotropic, mechanically oriented, average particle size 1.3 μm
Comparative Example 5 After kneading each component with two rolls according to the compounding ratio shown in Table 2 (roll surface temperature of about 70°C), the two rolls kneaded the ingredients at about 0.
It was rolled to a thickness of 4 degrees. Next, three sheets of this material were piled up and laminated and rolled to a thickness of 0.61111 mm using two rolls, and each characteristic of this material was determined. The results are shown in Table 3.
比較例６
第２表に示す配合割合のゴムとフェライトと全２本ロー
ル（表面温度約８０℃）で混線後、板状に取り出して室
温まで冷却したのち、再びロールに掛けて加硫剤、加硫
促進剤、活性剤を加えて混練後、２本ロールにて０．４
冨富厚に圧延成形した。Comparative Example 6 Rubber and ferrite having the compounding ratio shown in Table 2 were mixed on two rolls (surface temperature approximately 80°C), then taken out in a plate form and cooled to room temperature, then rolled again to mix the vulcanizing agent and the ferrite. After adding the vulcanization accelerator and activator and kneading, use two rolls to 0.4
It was rolled and formed into a thick layer.
次いでこれを２枚重ねて、プレス積層加硫（１６０℃、
１５分）にて、０．６１３１厚に成形し、このものの各
特性を求めた。その結果を第３表に示す。Next, these two sheets were stacked and press laminated vulcanization (160°C,
15 minutes) to a thickness of 0.6131 mm, and the properties of this product were determined. The results are shown in Table 3.
比較例７
第２表に示す割合で各成分を用い、比較例５と同様にし
て（ただし、ロール表面温度約１１０℃）、０．６１１
１厚に圧延を試みたが、ロールまとりが悪く成形できな
かった。Comparative Example 7 Using each component in the proportions shown in Table 2, in the same manner as Comparative Example 5 (however, the roll surface temperature was about 110°C), 0.611
Attempts were made to roll the product to a thickness of 1, but the roll was not tightly packed and could not be formed.
シート状磁石として使用するには、シート状物の片面に
、公知の方法で、Ｎ、Ｓ、Ｎ、Ｓ、−−−と多極ヲ有す
る着磁ヨークを用いて縞目状に着磁する必要がある。To use it as a sheet-like magnet, one side of the sheet-like material is magnetized in a striped pattern using a magnetizing yoke having multiple poles such as N, S, N, S, etc. using a known method. There is a need.
９）平均粒子径１．３μｍ
第３表から明らかなように、本発明のプラスチック磁石
用組成物は、従来のゴム磁石に比べ、塗料剥離性、耐溶
剤性が著しく優れる上に、ゴム磁石に匹敵する可撓性ｆ
ｃ有する。9) Average particle size: 1.3 μm As is clear from Table 3, the composition for plastic magnets of the present invention has significantly superior paint removability and solvent resistance compared to conventional rubber magnets, and also Comparable flexibility f
c.
Claims (1)
０〜９０重量％とポリオレフィン樹脂５０〜１０重量％
から成る樹脂混合物１２〜２５重量部と、（Ｂ）強磁性
体粉末８８〜７５重量部とをその合計量が１００重量部
になるように配合し、さらにこの１００重量部に対して
、（Ｃ）シリコーンオイル１〜１０重量部を配合して成
る磁石用組成物。1(A) Acid anhydride-modified ethylene-butene copolymer resin 5
0-90% by weight and polyolefin resin 50-10% by weight
12 to 25 parts by weight of a resin mixture consisting of (C ) A magnet composition comprising 1 to 10 parts by weight of silicone oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61211466A JPS6369204A (en) | 1986-09-10 | 1986-09-10 | Composite for magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61211466A JPS6369204A (en) | 1986-09-10 | 1986-09-10 | Composite for magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6369204A true JPS6369204A (en) | 1988-03-29 |
Family
ID=16606404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61211466A Pending JPS6369204A (en) | 1986-09-10 | 1986-09-10 | Composite for magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6369204A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02168603A (en) * | 1988-12-22 | 1990-06-28 | Sumitomo Metal Mining Co Ltd | Resin binder for rare earth-cobalt system use and resin magnet using same |
| JP2002099216A (en) * | 2000-09-21 | 2002-04-05 | Toda Kogyo Corp | Magnetic sheet for display |
| EP1360071A1 (en) * | 2000-11-26 | 2003-11-12 | Magnetnotes, Ltd. | Magnetic substrates, composition and method for making the same |
| US7338573B2 (en) | 2000-11-26 | 2008-03-04 | Magnetnotes, Ltd. | Magnetic substrates with high magnetic loading |
| US9028951B2 (en) | 2013-09-10 | 2015-05-12 | Magnetnotes, Ltd. | Magnetic receptive printable media |
-
1986
- 1986-09-10 JP JP61211466A patent/JPS6369204A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02168603A (en) * | 1988-12-22 | 1990-06-28 | Sumitomo Metal Mining Co Ltd | Resin binder for rare earth-cobalt system use and resin magnet using same |
| JP2002099216A (en) * | 2000-09-21 | 2002-04-05 | Toda Kogyo Corp | Magnetic sheet for display |
| EP1360071A1 (en) * | 2000-11-26 | 2003-11-12 | Magnetnotes, Ltd. | Magnetic substrates, composition and method for making the same |
| EP1360071A4 (en) * | 2000-11-26 | 2004-06-30 | Magnetnotes Ltd | Magnetic substrates, composition and method for making the same |
| US7128798B2 (en) | 2000-11-26 | 2006-10-31 | Magaetnotes, Ltd. | Magnetic substrates, composition and method for making the same |
| US7338573B2 (en) | 2000-11-26 | 2008-03-04 | Magnetnotes, Ltd. | Magnetic substrates with high magnetic loading |
| US9028951B2 (en) | 2013-09-10 | 2015-05-12 | Magnetnotes, Ltd. | Magnetic receptive printable media |
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