JPS60145301A - Surface treatment of magnetic powder - Google Patents
Surface treatment of magnetic powderInfo
- Publication number
- JPS60145301A JPS60145301A JP59000234A JP23484A JPS60145301A JP S60145301 A JPS60145301 A JP S60145301A JP 59000234 A JP59000234 A JP 59000234A JP 23484 A JP23484 A JP 23484A JP S60145301 A JPS60145301 A JP S60145301A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic powder
- mixed
- surface treatment
- powder
- plastics
- 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
- 239000006247 magnetic powder Substances 0.000 title claims abstract description 29
- 238000004381 surface treatment Methods 0.000 title claims description 14
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract description 9
- 229920003023 plastic Polymers 0.000 abstract description 7
- 239000004033 plastic Substances 0.000 abstract description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000843 powder Substances 0.000 abstract description 6
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 6
- 239000002904 solvent Substances 0.000 abstract description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 abstract description 2
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 abstract description 2
- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical compound [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 abstract description 2
- GQIUQDDJKHLHTB-UHFFFAOYSA-N trichloro(ethenyl)silane Chemical compound Cl[Si](Cl)(Cl)C=C GQIUQDDJKHLHTB-UHFFFAOYSA-N 0.000 abstract description 2
- 239000005050 vinyl trichlorosilane Substances 0.000 abstract description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 3
- 238000009736 wetting Methods 0.000 abstract 2
- -1 polypropylene Polymers 0.000 description 12
- 239000004698 Polyethylene Substances 0.000 description 9
- 229920000573 polyethylene Polymers 0.000 description 9
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- 239000007822 coupling agent Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 229920001684 low density polyethylene Polymers 0.000 description 3
- 239000004702 low-density polyethylene Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical group CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- ZYAASQNKCWTPKI-UHFFFAOYSA-N 3-[dimethoxy(methyl)silyl]propan-1-amine Chemical compound CO[Si](C)(OC)CCCN ZYAASQNKCWTPKI-UHFFFAOYSA-N 0.000 description 1
- 229930194542 Keto Natural products 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000005456 alcohol based solvent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003759 ester based solvent Substances 0.000 description 1
- 239000005453 ketone based solvent Substances 0.000 description 1
- 125000000468 ketone group Chemical group 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- BPSIOYPQMFLKFR-VIFPVBQESA-N trimethoxy-[3-[[(2r)-oxiran-2-yl]methoxy]propyl]silane Chemical compound CO[Si](OC)(OC)CCCOC[C@H]1CO1 BPSIOYPQMFLKFR-VIFPVBQESA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
本発明は、磁性粉末の表面処理方法に関し、特に低密度
ポリエチレンあるいはポリプロピレンに混入する磁性粉
末の濡れ性を向上させる表面処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a surface treatment method for magnetic powder, and particularly to a surface treatment method for improving the wettability of magnetic powder mixed in low density polyethylene or polypropylene.
低密度ポリエチレンやポリプロピレン（以下、ポリエチ
レン類と略称〕中に混入する磁性粉末は、フェライト系
で粒径１１口乃至２．０μｍの粉末であり、未表面処理
の状態で使用されていた。The magnetic powder mixed in low-density polyethylene and polypropylene (hereinafter abbreviated as polyethylene) is a ferrite-based powder with a particle size of 11 to 2.0 μm, and was used without surface treatment.
未表面処理で混入されたフェライト粉末は。Ferrite powder mixed in without surface treatment.
１１０℃〜１９０℃に加熱されたポリエチレン類中で混
練され、フィルム加工されたポリエチレン類中に配向さ
れ、着磁された後磁性シートとなる。The material is kneaded in polyethylene heated to 110° C. to 190° C., oriented in film-processed polyethylene, and magnetized to form a magnetic sheet.
ところで、通常の方法′で得られる未表面処理の磁性粉
末は、プラスチックに対する濡れ性が不足するため、磁
性シートに製品化後、物理的強度が悪かった。また、ポ
リエチレン類は無極性のプラスチックであることから、
磁性粉末の濡れ性が不足し混入し難かった。これらの結
果、磁性粉末の分散不足によってシート成形後の物理的
強度が弱く、シートの破損が多かった。By the way, unsurface-treated magnetic powder obtained by the conventional method lacks wettability to plastics, and therefore has poor physical strength after being commercialized into a magnetic sheet. In addition, since polyethylene is a non-polar plastic,
The magnetic powder had insufficient wettability and was difficult to mix. As a result, the physical strength after forming the sheet was weak due to insufficient dispersion of the magnetic powder, and the sheet was frequently damaged.
本発明は、磁性粉末の濡れ性を向上させることによって
製造されるべき磁性軟質シートの強度物性の向上を図り
つる磁性粉末の表面処理方法を提供するものである。The present invention provides a method for surface treatment of magnetic powder, which improves the strength and physical properties of a magnetic soft sheet to be manufactured by improving the wettability of the magnetic powder.
すなわち本発明は、シラン系カップリング剤を有機溶剤
中に０．１〜６．０重量％を混入溶解した処理液で磁性
粉末の表面を処理することを特命とする磁性粉末の表面
処理方法に関するものである。That is, the present invention relates to a method for surface treatment of magnetic powder, in which the surface of the magnetic powder is specially treated with a treatment liquid in which 0.1 to 6.0% by weight of a silane coupling agent is mixed and dissolved in an organic solvent. It is something.
本発明方法で表面処理した後の磁性粉末はポリエチレン
類との濡れ性か改善され、ポリエチシン類への混入が容
易になる。その結果、フィル士加工後の物理的、機械的
強度が向上し、磁性シートの破損が少くなる。The magnetic powder surface-treated by the method of the present invention has improved wettability with polyethylenes, and can be easily incorporated into polyethylenes. As a result, the physical and mechanical strength after film processing is improved, and damage to the magnetic sheet is reduced.
本発明は方法は、極性基を持たないプラスチックあるい
は混入混線が容易でないプラスチック・ゴム等へ混入す
、る磁性粉末に適用することができる。The method of the present invention can be applied to magnetic powders that are mixed into plastics that do not have polar groups, or plastics and rubbers that cannot be easily mixed.
本発明方法におけるシラン系カップリング剤としては、
無色ないし淡黄色透明であって、比重（２５℃） ０．
９０〜１．３０、屈折率（２５℃〕１．４０〜１．４５
、水や各棟の有機溶剤に溶解するもので、市販のものか
そのまま使用できる。As the silane coupling agent in the method of the present invention,
Colorless to pale yellow and transparent, specific gravity (25°C) 0.
90-1.30, refractive index (25°C) 1.40-1.45
It is soluble in water and organic solvents, and can be used commercially or as is.
また、シラン系カップリング剤の溶剤としてハ、メチル
アルコール、フロビルアルコール、ブチルアルコール等
のアルコール系溶剤（２０℃での比重０．７９〜０．８
１．２０℃での蒸気圧１２〜９８ｗａＨｇ）、ア七トン
、メチルインブチルケト／、メチルエチルケトン等のケ
トン系溶剤（２０℃での比重０．７９〜０．８１．２０
℃での蒸気圧１５〜１８６１ｍＨｇ）、酢酸メチル、酢
酸エチル等のエステル系溶剤（２０℃での比重０．９０
〜０．９４．２０℃での蒸気圧６５〜１７０■Ｈｇ）、
トルエンやキシレン等の芳香族系のものく２０℃での比
重０．８６〜０．８７．２０’Ｃでの蒸気圧６〜３７ｊ
ＩＭＨｇ）等が使用できる。In addition, as a solvent for the silane coupling agent, alcohol solvents such as methyl alcohol, flobyl alcohol, butyl alcohol (specific gravity at 20°C 0.79 to 0.8) can be used.
1. Vapor pressure at 20℃ 12~98waHg), ketone solvents such as a7ton, methyl imbutyl keto/, methyl ethyl ketone (specific gravity 0.79~0.81.20 at 20℃)
vapor pressure 15-1861 mHg at ℃), ester solvents such as methyl acetate and ethyl acetate (specific gravity 0.90 at 20℃)
~0.94. Vapor pressure at 20°C 65-170 ■Hg),
Aromatic materials such as toluene and xylene have a specific gravity of 0.86 to 0.87.20'C and a vapor pressure of 6 to 37J at 20℃.
IMHg) etc. can be used.
シラン系カップリング剤は、上記溶剤に０．１〜３．０
重量％混合して使用する。０．１重量％以下になると効
果がやや低下し、３．０重量％以上としても効果はさほ
ど向上しないので、コストが而から３．０重量％以下と
するのである。Add the silane coupling agent to the above solvent by 0.1 to 3.0.
Use by mixing % by weight. If the amount is less than 0.1% by weight, the effect will be slightly reduced, and if it is more than 3.0% by weight, the effect will not improve much. Therefore, for cost reasons, the amount is set to be 3.0% by weight or less.
また磁性粉末としては、例えば平均粒径１．０２、圧縮
密度３．３６１ ／１ｍ’のバリウムフェライト、平均
粒径１．８０、圧縮密度６．４９１ ／ｌｎ５のフェラ
イト、その他の市販品が使用できる。Further, as the magnetic powder, for example, barium ferrite with an average particle size of 1.02 and a compressed density of 3.361/1 m', ferrite with an average particle size of 1.80 and a compressed density of 6.491/ln5, and other commercially available products can be used. .
実施例１
磁性粉末について、表面処理の有無および表面処理液中
シランカップリング剤混入量の効果の評価を行った。こ
の結果を表１に示す。Example 1 Magnetic powder was evaluated for the presence or absence of surface treatment and the effect of the amount of silane coupling agent mixed in the surface treatment liquid. The results are shown in Table 1.
評価は、表面処理有シに対し無しの相対比較を定性的に
評価した。The evaluation was qualitatively performed by comparing the surface treatment with and without surface treatment.
カップリング剤ＡはビニルトリクロロシランＣｃＨ２＝
ａＨｓ１ａｔ３）で（メチルエチルケトン調製）ここで
は信越化学工業（株〕製の商品名ＫＡ１００３を使用し
た。Coupling agent A is vinyltrichlorosilane CcH2=
aHs1at3) (Methyl ethyl ketone preparation) Here, KA1003 (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) was used.
磁性粉末は、ＴＤＫ（株）製のフェライト粉末を使用し
、磁性シートは、低密度ポリエチレン（三菱油化（株、
）製の部品名ユカロン〕に上記フェライト粉末（処理し
たもの又は未処理のもの）を２０：８０（重菫比）で混
合し、１０騙厚さに調製したものを使用した。The magnetic powder used is ferrite powder manufactured by TDK Corporation, and the magnetic sheet was made of low-density polyethylene (Mitsubishi Yuka Corporation,
) and the above-mentioned ferrite powder (treated or untreated) were mixed at a ratio of 20:80 (heavy violet ratio) to a thickness of 10 mm.
表 １
□」
□
○：良、Δ：やや良
（５）
表１から明らかなようにシランカップリング剤０．１％
（雇１１）、１．０％（ム１２）、３．０％（４１５）
で処理した磁性粉末を混入した磁性シートは、無表面処
理（Ａｎ １ ）の磁性粉末を混入した磁性シートよ勺
も評価項目すべてで有効性が確認できた。Table 1 □" □ ○: Good, Δ: Slightly Good (5) As is clear from Table 1, silane coupling agent 0.1%
(employed 11), 1.0% (mu 12), 3.0% (415)
The effectiveness of the magnetic sheet mixed with the magnetic powder treated with (An 1 ) and the magnetic sheet mixed with the non-surface treated (An 1 ) magnetic powder was confirmed in all evaluation items.
実施例２
カップリング剤の種類について、その効果の評価を行っ
た。その結果を表２に示す。Example 2 The effects of different types of coupling agents were evaluated. The results are shown in Table 2.
カップリング剤はＡ、Ｂがｒ−グリシドオキシプロピル
トリメトキシシラン
（（株））製の商品名ＫＢＭ４０３）、Ｃがγ−メタア
クリルオキシプロピルトリメトキシシランＨ５０
（（株））製の商品名ＫＢＭ５０３）、Ｄがｎ−β（ア
ミノエチル）γ−アミノプロピルメチルジメトキシシラ
ンＨ２ｕ（ａＨ２）２ｉｎｕａＨ２）３ｓｔ（ｏａｕ３
）２ｆ６１ ０ Ｈ３
（信越化学工業Ｃ株））製の商品名ＫＢＭ ６ｏ２）を
、メチルアルコールに０．５重量％混入したものである
。Coupling agents A and B are r-glycidoxypropyltrimethoxysilane (trade name KBM403) manufactured by Co., Ltd., and C is γ-methacryloxypropyltrimethoxysilane H50 (trade name) manufactured by Co., Ltd. KBM503), D is n-β(aminoethyl)γ-aminopropylmethyldimethoxysilane H2u(aH2)2inuaH2)3st(oau3
) 2f61 0 H3 (trade name KBM 6o2) manufactured by Shin-Etsu Chemical Co., Ltd.) was mixed in methyl alcohol in an amount of 0.5% by weight.
上記各カップリング剤で表面処理した磁性粉末を低密度
ポリプロピレン（三菱油化μ株］製の商品名三菱ノーブ
レン）中に８０重量％混入し、ｔ、ｏ ａ厚の磁性シー
トとした。80% by weight of the magnetic powder surface-treated with each of the above coupling agents was mixed into low-density polypropylene (trade name: Mitsubishi Noblen, manufactured by Mitsubishi Yuka μ Co., Ltd.) to form a magnetic sheet with a thickness of t, oa.
表 ２
表２から明らかなように、カップリング剤の４種はいず
れも有効性が確認された。Table 2 As is clear from Table 2, the effectiveness of all four coupling agents was confirmed.
以上詳述した本発明方法によれば、次のような効果を奏
することができる。According to the method of the present invention detailed above, the following effects can be achieved.
（７） 磁性粉末はシラン系カップリング剤で表面処理
することによってポリエチレン等ヘノ濡れ性が向上し、
ポリエチレンに良く密着することから、フィルム加工性
、フィルムの伸び、引張り強さおよび引裂強さなど物理
的強度も無表面処理シートと比較し向上した。(7) Surface treatment of magnetic powder with a silane coupling agent improves its wettability with polyethylene, etc.
Because it adheres well to polyethylene, physical strengths such as film processability, film elongation, tensile strength, and tear strength are also improved compared to non-surface-treated sheets.
（イ１ 実施例４で使用したカップリング剤Ａ、Ｂ。(A1 Coupling agents A and B used in Example 4.
０、Ｄの４種は分子中に２個以上の反応基（メトキシ基
、シラノール基）を有し、その一つは磁性粉末と、他の
一つはポリエチレン等と化学結合して分子中に分散する
。The four types 0 and D have two or more reactive groups (methoxy group, silanol group) in the molecule, one of which is chemically bonded with magnetic powder and the other with polyethylene etc. Spread.
（つ１ 表面処理を施工した磁性粉末は、上記（１）。(1) Magnetic powder that has undergone surface treatment is described in (1) above.
（２）の作用によって、該粉末を使用した磁性シートの
物理的、機械的強度を向上させ、シートの実用時の破損
を少くすることに寄与する。The effect of (2) improves the physical and mechanical strength of the magnetic sheet using the powder and contributes to reducing breakage of the sheet during practical use.
復代理人 内 １） 明 復代理人 萩 原 亮 −Among the sub-agents: 1) Akira Sub-agent Ryo Hagi Hara -
Claims (1)
重量％を混入溶解した処理液で磁性粉末の表面を処理す
ることを特徴とする磁性粉末の表面処理方法。0.1 to 3.0 silane coupling agent in organic solvent
A method for surface treatment of magnetic powder, characterized in that the surface of magnetic powder is treated with a treatment liquid mixed and dissolved with % by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59000234A JPS60145301A (en) | 1984-01-06 | 1984-01-06 | Surface treatment of magnetic powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59000234A JPS60145301A (en) | 1984-01-06 | 1984-01-06 | Surface treatment of magnetic powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60145301A true JPS60145301A (en) | 1985-07-31 |
Family
ID=11468274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59000234A Pending JPS60145301A (en) | 1984-01-06 | 1984-01-06 | Surface treatment of magnetic powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60145301A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01301709A (en) * | 1987-12-14 | 1989-12-05 | B F Goodrich Co:The | Oxidation inhibiting composition used along with rare earth element magnet |
| JPH01309902A (en) * | 1988-06-07 | 1989-12-14 | Matsushita Electric Ind Co Ltd | Metal fine particle aggregate and manufacture thereof and magnetic recording medium using metal fine particle aggregate and manufacture thereof |
| JPH0215101A (en) * | 1988-07-04 | 1990-01-18 | Matsushita Electric Ind Co Ltd | Ultra fine particle and manufacture thereof |
| JP2013193890A (en) * | 2012-03-16 | 2013-09-30 | Mitsui Mining & Smelting Co Ltd | Coated magnetite particle and method of producing the same |
-
1984
- 1984-01-06 JP JP59000234A patent/JPS60145301A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01301709A (en) * | 1987-12-14 | 1989-12-05 | B F Goodrich Co:The | Oxidation inhibiting composition used along with rare earth element magnet |
| JPH01309902A (en) * | 1988-06-07 | 1989-12-14 | Matsushita Electric Ind Co Ltd | Metal fine particle aggregate and manufacture thereof and magnetic recording medium using metal fine particle aggregate and manufacture thereof |
| JPH0215101A (en) * | 1988-07-04 | 1990-01-18 | Matsushita Electric Ind Co Ltd | Ultra fine particle and manufacture thereof |
| JP2013193890A (en) * | 2012-03-16 | 2013-09-30 | Mitsui Mining & Smelting Co Ltd | Coated magnetite particle and method of producing the same |
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