JPS6371922A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS6371922A JPS6371922A JP21653986A JP21653986A JPS6371922A JP S6371922 A JPS6371922 A JP S6371922A JP 21653986 A JP21653986 A JP 21653986A JP 21653986 A JP21653986 A JP 21653986A JP S6371922 A JPS6371922 A JP S6371922A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- magnetic recording
- thin film
- sulfonated
- magnetic
- 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
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- 229910052783 alkali metal Inorganic materials 0.000 abstract description 3
- 150000001340 alkali metals Chemical class 0.000 abstract description 3
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- VTWDKFNVVLAELH-UHFFFAOYSA-N 2-methylcyclohexa-2,5-diene-1,4-dione Chemical class CC1=CC(=O)C=CC1=O VTWDKFNVVLAELH-UHFFFAOYSA-N 0.000 description 1
- VSHVAOIJUGIMJM-UHFFFAOYSA-N 2-nitrocyclohexa-2,5-diene-1,4-dione Chemical compound [O-][N+](=O)C1=CC(=O)C=CC1=O VSHVAOIJUGIMJM-UHFFFAOYSA-N 0.000 description 1
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- MIKUYHXYGGJMLM-GIMIYPNGSA-N Crotonoside Natural products C1=NC2=C(N)NC(=O)N=C2N1[C@H]1O[C@@H](CO)[C@H](O)[C@@H]1O MIKUYHXYGGJMLM-GIMIYPNGSA-N 0.000 description 1
- AUNGANRZJHBGPY-UHFFFAOYSA-N D-Lyxoflavin Natural products OCC(O)C(O)C(O)CN1C=2C=C(C)C(C)=CC=2N=C2C1=NC(=O)NC2=O AUNGANRZJHBGPY-UHFFFAOYSA-N 0.000 description 1
- NYHBQMYGNKIUIF-UHFFFAOYSA-N D-guanosine Natural products C1=2NC(N)=NC(=O)C=2N=CN1C1OC(CO)C(O)C1O NYHBQMYGNKIUIF-UHFFFAOYSA-N 0.000 description 1
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- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
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- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
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- 125000004429 atom Chemical group 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Lubricants (AREA)
- Magnetic Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、真空蒸着やスパッタリング等の真空薄膜形成
技術等の手法により非磁性支持体上に強磁性金属薄膜を
磁性層として形成した、いわゆる強磁性金属薄膜上の（
イ１気記録媒体に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a so-called magnetic layer in which a ferromagnetic metal thin film is formed as a magnetic layer on a non-magnetic support by vacuum thin film forming techniques such as vacuum evaporation and sputtering. on a ferromagnetic metal thin film (
This relates to recording media.
本発明は、非（ｄ性支持体上に強磁性金属ＰＩＩりを磁
性層として形成してなる磁気記録媒体において、磁性層
である強磁性金Ｖｒ％薄膜上にスルボン化されたＮ−フ
ルキルパーフルオロアルカン７ミドを被着し、
あらゆる使用条件下においても優れた走行性。The present invention provides a magnetic recording medium in which a ferromagnetic metal PII is formed as a magnetic layer on a non-d-type support, in which a sulfonated N-fulkyl peroxide is formed on a ferromagnetic gold Vr% thin film as a magnetic layer. Coated with fluoroalkane 7mide for excellent runnability under all conditions of use.
耐摩耗性、耐久性を発揮する磁気記録媒体を稈供しよう
とするものである。The aim is to provide a magnetic recording medium that exhibits wear resistance and durability.
従来より磁気記録媒体としては、非磁性支持体上にｒ
−Ｆ ｅ ｚｏｓ＋ Ｃｏを含有するｒ−ＦｅｚＯｚ＋
Ｆ ｅ ３０４１ Ｃｏを含有するＦ ｅ ２０ａ＋
ｒ Ｆ ｅ ｚｏｚとＦｅ、０４とのベルトライド化
合物、Ｃｏを含有するヘルドライド化合物、ＣｒＯ□等
の酸化物強磁性ｔ５）末あるいはＦｅ、Ｇｏ、Ｎｉ等を
主成分とする合金磁性粉末等の粉末磁性材料を塩化ビニ
ル−酢酸ビニル系共重合体、ポリエステル樹脂、ポリウ
レタン樹脂等の有機バインダー中に分散せしめた磁性塗
料を彷布・乾爆することにより作製される塗布型の磁気
記録媒体が広く使用されている。Conventionally, as a magnetic recording medium, r
r-FezOz+ containing -Fe zos+ Co
Fe 20a+ containing Fe 3041 Co
r F e zoz and Fe, 04-based beltride compounds, Co-containing heldride compounds, oxide ferromagnetic t5) powders such as CrO□, or alloy magnetic powders whose main components are Fe, Go, Ni, etc. Painted magnetic recording media are widely used, which are made by spreading and dry-exploding a magnetic paint in which a magnetic material is dispersed in an organic binder such as a vinyl chloride-vinyl acetate copolymer, polyester resin, or polyurethane resin. has been done.
これに対して、高密度磁気記録への要求の高まりととも
に、Ｃｏ−Ｎｉ合令等の強Ｃ１１性金属材料を、メッキ
や真空薄膜形成技術（真空蒸着法やスパッタリング法、
イオンブレーティング法等）によってポリエステルフィ
ルムやポリイミドフィルム等の非磁性支持体上に直接被
着した、いわゆる強磁性金属薄膜型の磁気記録媒体が提
案され、注目を集めている。この強磁性金属薄膜型磁気
記録媒体は、抗磁力や角形比等に優れ、短波長での電磁
変換特性に優れるばかりでなく、磁性層の厚みを極めて
薄くすることが可能であるため記録’ｔ＞Ｍ Ｎｔや再
生時の厚み損失が著しく小さいこと、磁性層中に非磁性
材である有機バインダーを混入する必要がないため！、
ｉ ＋’を材料の充填密度を高めることができること等
、数々の利点を有している。On the other hand, with the increasing demand for high-density magnetic recording, strong C11 metal materials such as Co-Ni are being used by plating, vacuum thin film formation techniques (vacuum evaporation method, sputtering method, etc.).
A so-called ferromagnetic metal thin film type magnetic recording medium, which is directly deposited on a non-magnetic support such as a polyester film or a polyimide film using an ion blating method, etc., has been proposed and is attracting attention. This ferromagnetic metal thin film magnetic recording medium not only has excellent coercive force and squareness, and excellent electromagnetic conversion characteristics at short wavelengths, but also has the ability to make the magnetic layer extremely thin, making it possible to record >M Nt and thickness loss during reproduction are extremely small, and there is no need to mix an organic binder, which is a non-magnetic material, into the magnetic layer! ,
i+' has a number of advantages, including the ability to increase the packing density of the material.
しかしながら、上述の強磁性金属薄膜型の磁気記録媒体
では、Ｃｆ性層表面の平滑性が極めて良好であるために
実質的な接触面積が大きくなり、凝着現象（いわゆるは
りつき）が起こり易くなったり摩擦係数が大きくなる等
、耐久性や走行性等に欠点が多く、その改善が大きなＬ
７５Ｊとなっている。However, in the above-mentioned ferromagnetic metal thin film type magnetic recording medium, the surface smoothness of the Cf layer is extremely good, so the effective contact area is large, making it easy for adhesion phenomena (so-called sticking) to occur. L has many drawbacks in terms of durability and running performance, such as a large coefficient of friction, and improvements in these areas would be significant.
It is 75J.
一般に、磁気記録媒体は磁気信号の記録・再生の過程で
Ｆｉｌ気ヘッドとの高速相対ｊＪ動のもとにおかれ、そ
の際走行が円滑に、かつ安定な状態で行われなければな
らない。また、磁気ヘッドとの接触による摩耗や損傷は
なるべく少ないほうがよい。Generally, a magnetic recording medium is subjected to high-speed relative motion with a film head in the process of recording and reproducing magnetic signals, and must run smoothly and stably at this time. Further, it is better to minimize wear and damage caused by contact with the magnetic head.
そこで例えば、上記磁気記Ｓ、を媒体の磁性層、すなわ
ち強磁性金属薄膜表面に潤滑剤を塗布して保護膜を形成
することにより、上記耐久性や走行性を改善することが
試みられている。For example, attempts have been made to improve the durability and runnability of the magnetic recording medium S by applying a lubricant to the surface of the magnetic layer of the medium, that is, a ferromagnetic metal thin film to form a protective film. .
ところで、上述のように潤滑剤を塗布して保護膜を形成
した場合には、この保護膜が磁性層である強磁性金属薄
膜に対して良好な密着性を示し、かつ高い潤滑効果を発
揮することが要求される。By the way, when a protective film is formed by applying a lubricant as described above, this protective film exhibits good adhesion to the ferromagnetic metal thin film that is the magnetic layer and exhibits a high lubrication effect. This is required.
また、これら密着性や潤滑効果は、熱帯、亜熱帯地方等
のように高温多ｔ？の条（１下でも、寒冷地のように低
温の条件下でも優れたものでなければならない。In addition, these adhesion and lubrication effects may be affected by high temperatures such as tropical and subtropical regions. Even under Article 1, it must be excellent even under low-temperature conditions such as in cold regions.
しかしながら、従来広く用いられている潤滑剤の使用温
度範囲は限られており、特に、Ｏ〜−５“Ｃのような低
温下では固体化または凍結するものが多く、充分にその
潤滑効果を発揮させることができなかった。However, the operating temperature range of conventionally widely used lubricants is limited, and in particular, many of them solidify or freeze at low temperatures such as O to -5"C, so they cannot fully exert their lubricating effect. I couldn't let it go.
そこで本発明は、如何なる使用条件下においても密着性
や潤滑性が保たれ、かつ長期に亘り潤滑効果が持続する
潤滑剤を提供し、走行性、耐久性に優れた磁気記録媒体
を提供することを目的とする。Therefore, the present invention provides a lubricant that maintains adhesion and lubricity under any usage conditions and maintains a lubricating effect over a long period of time, and provides a magnetic recording medium with excellent running performance and durability. With the goal.
本発明者は、上述の目的を達成せんものと鋭意研究の結
果、スルホン化されたＮ−アルキルパーフルオロアルカ
ンアミドが広い温度範囲に亘って良好な潤滑効果を発揮
することを見出し本発明を完成するに至ったちのであっ
て、第１図に示すように、非磁性支持体（１）上に強磁
性金属薄膜（２）を形成し、上記強磁性金属薄膜（２）
にスルホン化されたＮ−アルキルパーフルオロアルカン
アミドを主成分とする潤滑剤層（３）を破竹したことを
特徴とするものである。As a result of intensive research to achieve the above-mentioned object, the present inventor discovered that sulfonated N-alkyl perfluoroalkanamide exhibits a good lubricating effect over a wide temperature range, and completed the present invention. As shown in FIG. 1, a ferromagnetic metal thin film (2) is formed on a non-magnetic support (1), and the ferromagnetic metal thin film (2)
The lubricant layer (3) whose main component is a sulfonated N-alkyl perfluoroalkane amide is made from broken bamboo.
本発明で潤滑剤として使用されるスルホン化されたＮ−
フルキルパーフルオロフルカンアミドは、一般式
％式％
（但し、式中Ｒは炭化水素基を表し、Ｘは水素。Sulfonated N- used as a lubricant in the present invention
Furkylperfluoroflucanamide has the general formula % (wherein R represents a hydrocarbon group and X is hydrogen.
アルカリ金属、アルカリ土類金属のいずれかを表してい
る。またｎは３以上の整数である。）で表される化合物
である。Represents either an alkali metal or an alkaline earth metal. Further, n is an integer of 3 or more. ) is a compound represented by
上記スルホン化されたＮ−アルキルパーフルオロアルカ
ンアミドは、例えばジャーナル オブオイル ケミカル
ソサエティ（Ｊｏｕｒｎａｌ ｏｆ ｏｉｌｃｈｅｍ
ｉｃａｌ ５ｏｃｉｅｔｙ） ６１ （１９８４）
に記載されるように、相当するアミド（Ｃ，、Ｆｚ、ｌ
−＋Ｃ０Ｎ（Ｒ）Ｉｔ）と金属ナトリウムとをトルエン
とメチルアルコール中に加え、メチルアルコールをトル
エンと共沸させた後、１，３−プロパ７ス／Ｉ／ドア
（（ＣＩ（２） ユ５ｏ２）を加えることによって容
易に得ることができる。The above-mentioned sulfonated N-alkyl perfluoroalkanamides are described, for example, in the Journal of Oil Chemical Society.
ical 5ociety) 61 (1984)
The corresponding amide (C,, Fz, l
-+C0N(R)It) and metallic sodium are added to toluene and methyl alcohol, and after azeotropically distilling the methyl alcohol with toluene, 1,3-propa7s/I/door
It can be easily obtained by adding ((CI(2) U5o2).
ここで、上記一般式＜１）において、スルホン化された
Ｎ−アルキルパーフルオロアルカンアミドのパーフルオ
ロ基の炭素数ｎは３以上の整数であることが望ましく、
パーフルオロ基の炭素数が３未満の場合には所定の潤滑
効果を期待することができない。一方、Ｒは炭化水素基
であれば、飽和、不飽和、直鎖状または分枝状のいずれ
でもよく、またＸは水素、アルカリ金属、アルカリ土類
金属のいずれであってもかまわない。Here, in the above general formula <1), the carbon number n of the perfluoro group of the sulfonated N-alkylperfluoroalkanamide is preferably an integer of 3 or more,
If the number of carbon atoms in the perfluoro group is less than 3, the desired lubricating effect cannot be expected. On the other hand, R may be saturated, unsaturated, linear or branched as long as it is a hydrocarbon group, and X may be hydrogen, an alkali metal, or an alkaline earth metal.
上述のようにして合成されるスルホン化されたＮ−アル
キルパーフルオロアルカンアミドは、単独で潤滑剤とし
て用いてもよいが、従来公知の潤滑剤と混合して用い、
さらに使用温度帯域の拡大を図るようにしてもよい。The sulfonated N-alkyl perfluoroalkanamide synthesized as described above may be used alone as a lubricant, but it can also be used in combination with a conventionally known lubricant.
Furthermore, the usage temperature range may be expanded.
使用される潤滑剤としては、脂肪酸またはその金属塩、
脂肪酸アミド、脂肪酸エステル、脂肪族アルコールまた
はそのアルコキシド、脂肪族アミン、多価アルコール、
ソルビタンエステル、マンニノタンエステル、硫黄化脂
肪酸、脂肪族メルカプタン、変性シリコーンオイル、バ
ーフルオロアルキルエチレンオキンド、パーフルオロポ
リエーテル類、高級アルキルスルホン酸またはその金属
塩、パーフルオロアルキルスルホン酸またはそのアンモ
ニウム塩あるいはその金属塩、パーフルオロアルキルカ
ルボン酸またはその金属塩等が例示される。The lubricants used include fatty acids or their metal salts;
Fatty acid amide, fatty acid ester, fatty alcohol or its alkoxide, fatty amine, polyhydric alcohol,
Sorbitan ester, manninotan ester, sulfurized fatty acid, aliphatic mercaptan, modified silicone oil, barfluoroalkyl ethylene oxide, perfluoropolyethers, higher alkyl sulfonic acid or its metal salt, perfluoroalkyl sulfonic acid or its ammonium Examples include salts or metal salts thereof, perfluoroalkylcarboxylic acids or metal salts thereof, and the like.
特に、一般式Ｃ１Ｆ２□、Ｃ０ＯＲ’ （但し、式中
ｍは６〜１０の整数を表し、Ｒｏは炭素数１〜２５の炭
化水素基を表す。）で示されるパーフルオロアルキルカ
ルボン酸エステルや一般式Ｒ″Ｃ００（ＣＣ００（ＣＨ
ｚ）ＪＣ＋ （但し、Ｒ”は炭素数１〜２５の炭化水素
基を表し、０≦ｊ≦５、ｋ≧３である。）も低温特性が
良好であることから上記不飽和脂肪酸アミドと併用する
のに好適である。In particular, perfluoroalkyl carboxylic acid esters represented by the general formulas C1F2□, C0OR' (where m represents an integer of 6 to 10, and Ro represents a hydrocarbon group having 1 to 25 carbon atoms) and general Formula R″C00(CC00(CH
z) JC+ (where R'' represents a hydrocarbon group having 1 to 25 carbon atoms, and 0≦j≦5, k≧3) is also used in combination with the above unsaturated fatty acid amide because of its good low temperature properties. It is suitable for
さらには、より厳しい使用条件に対処し、かつ潤滑効果
を持続するためＳこ、上記スルホン化されたＮ−アルキ
ルパーフルオロアルカンアミド中に重量比で３０ニア０
〜７０：３０程度の配合比で極圧剤を併用してもよい。Furthermore, in order to cope with more severe usage conditions and maintain the lubricating effect, S is added to the sulfonated N-alkyl perfluoroalkanamide in a weight ratio of 30 to
An extreme pressure agent may be used in combination at a blending ratio of about 70:30.
上記極圧剤は、境界潤滑領域において部分的に金属接触
を生したとき、これに伴う摩擦熱によって金属面と反応
し、反応生成物被膜を形成することにより摩擦・摩耗防
止作用を行うものであって、リン酸エステル、亜リン酸
エステル又はリン酸エステルアミン塩等のリン系極圧剤
、硫化油脂、モノサルファイド又はポリサルファイド等
のイオウ系極圧剤、ヨウ素化合物、臭素化合物又は塩素
化合物等のハロゲン系極圧剤、チオリン酸塩、チオカル
バミン酸塩又は金属アルキルジチオカルバミン酸塩等の
有機金属系極圧剤、ジアルキルチオリン酸アミン、チオ
フォスフェート又はチオフォスファイト等の複合型極圧
剤等が知られている。When the extreme pressure agent makes partial metal contact in the boundary lubrication area, it reacts with the metal surface due to the accompanying frictional heat, forming a reaction product film to prevent friction and wear. In particular, phosphorus-based extreme pressure agents such as phosphate esters, phosphite esters or phosphate ester amine salts, sulfur-based extreme pressure agents such as sulfurized oils and fats, monosulfides or polysulfides, iodine compounds, bromine compounds or chlorine compounds, etc. Halogenated extreme pressure agents, organometallic extreme pressure agents such as thiophosphates, thiocarbamates, or metal alkyl dithiocarbamates, and complex extreme pressure agents such as dialkylthiophosphate amines, thiophosphates, or thiophosphites are well known. It is being
また、上述の潤ｉｔ ？Ｉ 、極圧剤の他必要に応じて
防錆剤を併用してもよい。Also, the above-mentioned Jun it? I. In addition to the extreme pressure agent, a rust preventive agent may be used in combination if necessary.
使用可能な防錆剤としては、通常この種の磁気記録媒体
の防錆剤として使用されるものであれば如何なるもので
もよく、例えば二価フェノール。As the rust preventive agent that can be used, any rust preventive agent that is normally used as a rust preventive agent for this type of magnetic recording medium may be used, such as dihydric phenol.
アルキルフェノールあるいはニトロソフェノール等のフ
ェノール類、純ナフトール又はニトロ、ニトロソ、アミ
ノ、ハロゲノ置換ナフトール等のナフトール類、メチル
キノン、ヒドロキシキノン。Phenols such as alkylphenol or nitrosophenol, naphthols such as pure naphthol or nitro-, nitroso-, amino-, or halogeno-substituted naphthol, methylquinone, hydroxyquinone.
アミノキノン、ニトロキノン又はハロゲノキノン等のキ
ノン類、ヘンヅフエノン及びその誘導体であるヒドロキ
シヘンシフエノン、アミノヘンヅフェノン等のジアリー
ルケトン、アクリジン、４−キノリツール、キヌレン酸
又はリボフラビン等の窒素原子を含む複素環化合物、ト
コフェロール又はグアノシン等の酸素原子を含む複素環
化合物、スルホラン、スルホレン又はビチオン等の硫黄
原子を含む複素環化合物、チオフェノール、ジチゾン又
はチオオキシン等のメルカプト基を有する化合物、エン
タチオ酸又はルヘアン酸等のチオカルボン酸またはその
塩、ジアゾスルフィド又はヘンジチアゾリン等のデアゾ
ール系化合物等が挙げられる。上記防錆剤は、潤滑剤と
混合させて用いても良いが、例えば第２図に示すように
、非磁性支持体（１）上に形成した強磁性金属薄１１２
（２）の表面に先ず上記防錆開店（４）を塗布し、し７
かる後潤滑剤層（３）を塗布するというように、２五以
上に分けて被着すると効果が高い。quinones such as aminoquinone, nitroquinone or halogenoquinone; diarylketones such as hydroxyhemsiphenone and its derivatives hydroxyhemsiphenone and aminohenduphenone; heterocyclic compounds containing a nitrogen atom such as acridine, 4-quinolitool, kynurenic acid or riboflavin; Heterocyclic compounds containing an oxygen atom such as tocopherol or guanosine, heterocyclic compounds containing a sulfur atom such as sulfolane, sulfolene or bithione, compounds having a mercapto group such as thiophenol, dithizone or thiooxine, thiocarboxylic compounds such as entathioic acid or ruheanoic acid. Examples include acids or salts thereof, deazole compounds such as diazosulfide and hendithiazoline, and the like. The above-mentioned rust preventive agent may be used in combination with a lubricant, but for example, as shown in FIG.
First, apply the above anti-rust coating (4) on the surface of (2), and then
It is most effective if the lubricant layer (3) is applied in 25 or more parts.
これらスルホン化されたＮ−アルキルパーフルオロフル
カンアミドを含有する潤滑剤梠を強磁性金属薄膜上に付
着させる方法としては、上記潤滑剤を溶媒に溶解して得
られた溶液を強磁性金属薄膜の表面に塗布もしくは噴霧
するか、あるいは逆にこの溶液中に強磁性金属薄膜を浸
漬し乾燥すればよい。A method for depositing a lubricant containing these sulfonated N-alkyl perfluoroflucanamides onto a ferromagnetic metal thin film is to dissolve the lubricant in a solvent and apply the resulting solution to the ferromagnetic metal thin film. It may be applied or sprayed onto the surface, or conversely, a ferromagnetic metal thin film may be immersed in this solution and dried.
ここで、その塗布量は、０．５■／ｄ〜１００■／Ｍで
あるのが好ましく、ｌｎｗ／ｄ〜２０■７．ｄであるの
がより好ましい。この塗布量があまり少なすぎると、摩
擦係数の低下、耐摩耗性・耐久性の向上という効果が顕
れず、一方あまり多すぎると、）ど動部材と強磁性金属
薄膜との間ではりつき現象が起こり、却って走行性が悪
くなる。Here, the coating amount is preferably 0.5/d to 100/M, and lnw/d to 20/7. d is more preferable. If the coating amount is too small, the effects of lowering the friction coefficient and improving wear resistance and durability will not be achieved. On the other hand, if it is too large, a sticking phenomenon may occur between the sliding member and the ferromagnetic metal thin film. This will actually worsen the running performance.
木完明が通用される磁気記録媒体は、非磁性支持体上に
磁性層として強磁性金属薄膜を設けたものであるが、こ
こで非磁性支持体の素材としては、ポリエチレンテレフ
タレート等のポリエステル類、ポリエチレン。ポリプロ
ピレン等のポリオレフィン類、セルローストリアセテー
ト、セルローヌダイ了セテート、セルロースアセテート
ブチレート等のセルロース誘導体、ポリ塩化ビニル、ポ
リ塩化ビニリデン等のビニル系樹脂、ポリカーボネート
、ポリイミド、ポリアミドイミド等のプラスチック、ア
ルミニうム合金、チタン合金等の軽金匡、アルミナガラ
ス等のセラミックス等が挙げられる。The magnetic recording medium for which Kikanmei is commonly used has a ferromagnetic metal thin film as a magnetic layer on a non-magnetic support, but the material for the non-magnetic support is polyester such as polyethylene terephthalate. ,polyethylene. Polyolefins such as polypropylene, cellulose derivatives such as cellulose triacetate, cellulone diacetate, and cellulose acetate butyrate, vinyl resins such as polyvinyl chloride and polyvinylidene chloride, plastics such as polycarbonate, polyimide, and polyamideimide, aluminum alloys, Examples include light metals such as titanium alloys and ceramics such as alumina glass.
この非磁性支持体の形態としては、フィルム、シート、
ディスク、カード、ドラム等のいずれでもよい。The forms of this non-magnetic support include film, sheet,
It may be a disk, card, drum, etc.
上記非磁性支持体には、その表面に山状突起やしわ状突
起２粒状突起等の突起を１種以上を形成し、表面粗さを
コントロールしてもよい。The surface roughness of the non-magnetic support may be controlled by forming one or more types of protrusions such as mountain-like protrusions and wrinkle-like protrusions on the surface of the non-magnetic support.
上記山状突起は、例えば高分子フィルム製膜時に粒径５
００〜３０００人程度の無機数４′ｌ子を内添すること
により形成され、高分子フィルム表面からの高さは１０
０〜１０００人、密度はおよそＩＸ］、０’〜ｌ０ＸＩ
Ｏ’個／龍２とする。山状突起を形成するために使用さ
れる無機１危粒子としては、炭酸カルシウム（ＣａＣＯ
，）やシリカ１ アルミナ等が好適である。For example, the above-mentioned mountain-like protrusions have a particle size of 5 when forming a polymer film.
It is formed by internally adding about 00 to 3,000 inorganic 4' molecules, and the height from the surface of the polymer film is 10.
0-1000 people, density approximately IX], 0'-l0XI
O' pieces/2 dragons. The inorganic hazardous particles used to form mountain-like protrusions include calcium carbonate (CaCO
, ), silica 1 alumina, etc. are suitable.
上記しわ状突起は、例えば特定の混合溶媒を用いた樹脂
の希ｇｉ溶液を塗布乾燥することにより形成される起伏
であって、その高さは０．０１〜１０μｍ、好ましくは
０．０３〜０．５μｍ、突起間の最短間隔は０．１〜２
０μｍとする。このしわ状突起を形成するための樹脂と
しては、ポリエチレンテレフタレート、ポリエチレンナ
フタレート等の飽和ポリエステル、ポリアミド、ポリス
チロール、ポリカーボネート、ポリアクリレート、ポリ
スルホン、ポリエーテルスルホン、ポリ塩化ビニル、ポ
リ塩化ビニリデン、ポリビニルブチラール、ポリフェニ
レンオキサイド、フェノキシ樹ｊ指等の各種樹脂の単体
、混合体または共重合体であり、可溶性溶剤を有するも
のが適している。そして、これらの樹脂をその良溶媒に
溶解せしめた樹脂濃度１〜１１０００ｐｐの溶液に、そ
の樹脂の貧溶媒であって前記良溶媒より高い沸点を有す
る溶媒を樹脂に対して１０〜１００倍■添加した溶液を
、高分子フィルムの表面に塗布・乾Ｉｌスすることによ
り、非常に微細なしわ状凹凸を有する薄層を得ることが
できる。The wrinkle-like protrusions are undulations formed by, for example, applying and drying a dilute GI solution of a resin using a specific mixed solvent, and the height thereof is 0.01 to 10 μm, preferably 0.03 to 0.0 μm. .5 μm, the shortest distance between protrusions is 0.1-2
It is set to 0 μm. Examples of resins used to form these wrinkle-like projections include saturated polyesters such as polyethylene terephthalate and polyethylene naphthalate, polyamides, polystyrene, polycarbonates, polyacrylates, polysulfones, polyethersulfones, polyvinyl chloride, polyvinylidene chloride, and polyvinyl butyral. , polyphenylene oxide, phenoxy resin, etc. alone, a mixture, or a copolymer, and those having a soluble solvent are suitable. Then, to a solution in which these resins are dissolved in the good solvent and the resin concentration is 1 to 11,000 ppp, a solvent that is a poor solvent for the resin and has a boiling point higher than the good solvent is added 10 to 100 times the amount of the resin. By applying and drying the solution on the surface of a polymer film, a thin layer having very fine wrinkle-like irregularities can be obtained.
粒状突起は、アクリル樹脂等の有機超微粒子またはシリ
カ、金属粉等の無機微粒子を球状あるいは半球状に付着
させることにより形成される。・二の粒状突起の高さは
、５０〜５００人、密度は１×１０６〜５０Ｘ１０６個
／−真２程度とする。The granular protrusions are formed by attaching organic ultrafine particles such as acrylic resin or inorganic fine particles such as silica or metal powder in a spherical or semispherical shape. - The height of the second granular protrusion is 50 to 500 people, and the density is about 1 x 106 to 50 x 106 pieces/-2.
これら突起の少なくとも一種以上を形成すれば磁性層で
ある強磁性金属薄膜の表面性が制御■されるが、２ Ｔ
ｆｆｉ以上を組み合わせろことにより効果が増し、特に
山状突起を設置すたベースフィルム上にしわ状突起とつ
ぶ状突起を形成すれば、極めて耐久性１走行性が改善さ
れる。By forming at least one type of these protrusions, the surface properties of the ferromagnetic metal thin film that is the magnetic layer can be controlled.
Combining ffi or more will increase the effect, and in particular, if wrinkle-like protrusions and squabble-like protrusions are formed on the base film on which the mountain-like protrusions are provided, durability and runnability will be greatly improved.
この場合、突起の全体としての高さは、１００〜２００
０人の範囲内であることが好ましく、その密度は１璽曽
２当り平均でｉ ｘ ｔ ｏ５〜Ｉ Ｘ １０’個であ
ることが好ましい。In this case, the overall height of the protrusion is 100 to 200
The density is preferably in the range of 0 people, and the density is preferably ix to 5 to I x 10' on average per 1 square.
また、上記磁性層である強磁性金属薄膜は、真空茎着法
やイオンブレーティング法、スパッタリング法等の真空
曹膜形成技術によりｌｊ！続膜とじて形成される。In addition, the ferromagnetic metal thin film that is the above-mentioned magnetic layer is formed using a vacuum carbon dioxide film forming technique such as a vacuum deposition method, an ion blating method, or a sputtering method. It is formed as a continuation membrane.
上記真空蒸着法は、１０−’−１０−８Ｔｏｒｒの真空
下で強磁性金属材料を抵抗加熱、高周波加熱、？Ｓ子ビ
ーム加熱等により茎発させ、ディスク基板上に蒸発金属
（強磁性金属材料）を注性するというものであり、一般
に高い抗磁力を得るため基板に対して上記強磁性金属材
料を斜めに蒸着する斜方蒸着法が採用される。あるいは
、より高い抗磁力を得るために酸素雲間気中で上記蒸着
を行うものも含まれる。The above-mentioned vacuum evaporation method involves resistance heating, high frequency heating, ? This method involves injecting evaporated metal (ferromagnetic metal material) onto the disk substrate using S-beam heating, etc. Generally, in order to obtain high coercive force, the ferromagnetic metal material is placed diagonally to the substrate. An oblique evaporation method is used for vapor deposition. Alternatively, in order to obtain higher coercive force, the above-mentioned deposition is performed in an atmosphere between oxygen clouds.
上記イオンブレーティング法も真空蒸着法の一種であり
、１０−４〜１０−’Ｔｏｒｒの不活性ガス雰囲気中で
ＤＣグロー放電、ＲＦＦｃ−放電を起こして、放電中で
上記強磁性金属材料をア発させろというものである。The above-mentioned ion brating method is also a type of vacuum evaporation method, in which DC glow discharge and RFFc-discharge are caused in an inert gas atmosphere of 10-4 to 10-' Torr, and the above-mentioned ferromagnetic metal material is energized during the discharge. It is meant to be released.
上記スパッタリング法は、１０−’〜１０−’Ｔｏｒｒ
のアルゴンガスを主成分とする雰囲気中でグロー放電を
起こし、生じたアルゴンガスイオンでターゲット表面の
原子をたたき出すというものであり、グロー放電の方法
により直２ａ２極、３極スパッタ法や、高周波スパッタ
法、またはマグフトロン放電を利用したマグネトロンス
パッタ法等がある。The above sputtering method uses 10-' to 10-' Torr.
A glow discharge is caused in an atmosphere mainly composed of argon gas, and the generated argon gas ions are used to knock out atoms on the target surface. method, or magnetron sputtering method using magftron discharge.
このスパッタリング法による場合には、ＣｒやＷ。In the case of this sputtering method, Cr or W is used.
■等の下地膜を形成しておいてもよい。A base film such as (2) may be formed in advance.
なお、上記いずれの方法においても、基板上にあらかじ
めＢｉ、Ｓｂ、Ｐｂ、Ｓｎ、Ｇａ、Ｉｎ。In any of the above methods, Bi, Sb, Pb, Sn, Ga, and In are preliminarily deposited on the substrate.
Ｃｄ、Ｇｅ、Ｓｉ、Ｔｅ等の下地金属層を被着形成して
おき、基板面に対して垂直方向から成膜することにより
、磁気異方性の配向かなく面内等方法に優れた磁性層を
形成することができ１、例えば磁気ディスクとする場合
には好適である。By pre-depositing a base metal layer such as Cd, Ge, Si, Te, etc., and depositing the film in a direction perpendicular to the substrate surface, excellent in-plane magnetic properties can be achieved without magnetic anisotropy orientation. It is suitable for forming a layer 1, for example, in a magnetic disk.
このような真空薄膜形成技術により金匡磁性薄膜を形成
する際に、使用される強！４ｆ性金属材料としては、Ｆ
ｅ、Ｃｏ、Ｎｉ等の金属の他に、ｃ。The strong! As a 4f metal material, F
In addition to metals such as e, Co, and Ni, c.
−Ｎｉ合金、Ｃｏ−Ｐｔ合金、Ｃｏ−Ｎ１−ｐｔ金合金
Ｆｅ−Ｃｏ合金、ｆｒｅ−Ｎｉ合金、Ｆｃ−Ｇｏ−Ｎｉ
合金、Ｆｅ−Ｃｏ−Ｂ合金、Ｃｏ−Ｎ１−Ｆｅ−Ｂ合金
、Ｃｏ−Ｃｒ合金あるいはこれらにＣｒ、Ａ７！等の金
属が含有されたもの等がｊ象げられる。特に、Ｃｏ−Ｃ
ｒ合金を使用した場合には、垂直磁化膜が形成される。-Ni alloy, Co-Pt alloy, Co-N1-pt gold alloy Fe-Co alloy, free-Ni alloy, Fc-Go-Ni
alloy, Fe-Co-B alloy, Co-N1-Fe-B alloy, Co-Cr alloy, or these with Cr, A7! Examples include those containing metals such as. In particular, Co-C
When r-alloy is used, a perpendicularly magnetized film is formed.
このような手法により形成される磁性層の膜厚は、０．
０４〜１μｍ程度である。The thickness of the magnetic layer formed by such a method is 0.
It is about 0.04 to 1 μm.
また、第３図に示されるように、非磁性支持体（１）上
の強磁性金属薄膜（２）と潤滑剤層（３）が設けられる
面とは反対側に、いわゆるバックコート層（５）を形成
してもよい。バックコート層は、塩化ビニル−酢酸ビニ
ル、フェノール樹脂又はポリフッ化ビニル並びにポリウ
レタン樹脂又はブタジェン系共重合体等の結合剤樹脂と
導電性を付与するためのカーボン系微粉末又は表面粗度
のコントロール及び耐久性向上のために添加される無機
顔料等の粉末成分とをアセトン、メチルエチルケトン又
はベンゼン等の有機溶媒に混合分散させたバックコート
用塗料を非磁性支持体面に塗布することにより形成され
る。Further, as shown in FIG. 3, a so-called back coat layer (5 ) may be formed. The back coat layer consists of binder resin such as vinyl chloride-vinyl acetate, phenol resin or polyvinyl fluoride, polyurethane resin or butadiene copolymer, carbon-based fine powder for imparting conductivity, or surface roughness control. It is formed by coating the surface of a non-magnetic support with a back coat paint in which a powder component such as an inorganic pigment added to improve durability is mixed and dispersed in an organic solvent such as acetone, methyl ethyl ketone or benzene.
前述のバックコートａには潤滑剤を使用してもよい。こ
の場合、上記バンクコート層中に潤滑剤を内添する方法
、あるいはバンクコート層上に潤滑剤を被着する方法が
ある。いずれにしても、上記潤Ｃけ剤としては、脂肪酸
、脂肪酸エステル、脂肪酸アミド、金属石鹸、脂ｔｌＪ
ｉ族アルコール、パラフィン、シリコーン等従来より周
知の潤滑剤が使用できる。A lubricant may be used in the above-mentioned back coat a. In this case, there is a method of internally adding a lubricant to the bank coat layer, or a method of depositing a lubricant on the bank coat layer. In any case, the moisturizing agents mentioned above include fatty acids, fatty acid esters, fatty acid amides, metal soaps, fat tlJ
Conventionally known lubricants such as Group I alcohols, paraffin, silicones, etc. can be used.
スルホン化されたＮ−アルキルパーフルオロアルカンア
ミドを強磁性金属薄膜にン波着することにより良好な潤
滑作用を発揮して摩擦係数を低酸する。By depositing a sulfonated N-alkyl perfluoroalkane amide on a ferromagnetic metal thin film, it exhibits a good lubricating effect and lowers the coefficient of friction.
特に、スルホン化されたＮ−アルキルパーフルオロアル
カンアミドは、低温下においても良好な潤滑効果を発揮
する。In particular, sulfonated N-alkyl perfluoroalkanamides exhibit good lubricating effects even at low temperatures.
以下、本発明の具体的な実施例について説明するが、本
発明はこれら大晦側に限定されるものではない。Hereinafter, specific examples of the present invention will be described, but the present invention is not limited to these New Year's Eve side.
スルホン化されたＮ−アルキルバーフルオロアルカンア
ミドを用いて強磁性金属薄膜型の（ｆ気記録媒体を作製
した。A ferromagnetic metal thin film type recording medium was prepared using a sulfonated N-alkyl barfluoroalkane amide.
実施例１゜
１４μｍＴｇ、のポリエチレンテレフタレートフィルム
に斜め蒸着法によりＣＯを被着させ、膜ｒｇ−１０００
人の強磁性金属薄膜を形成した。Example 1 A polyethylene terephthalate film with a Tg of 14 μm was coated with CO by an oblique vapor deposition method, and the film was coated with a film rg-1000.
A ferromagnetic metal thin film was formed.
次に、この強磁性金属薄膜表面に、Ｎ−スルホプロピル
ペンタデカフルオロオクタンアミドのナトリウム塩（Ｃ
Ｊ＋５ＣＯＮＨＣＨｚＣＨｚＣＩＩ２ＳＯ３Ｎａ）をフ
レオン）容）皮にン立片したものを、塗布輩力’５ｍｇ
／ｍとなるように塗布し、１ｚ２インチ幅に裁断してサ
ンプルテープを作製した。Next, the sodium salt of N-sulfopropylpentadecafluorooctanamide (C
Apply 5 mg of Freon) to the skin.
/m and cut into 1x2 inch widths to prepare sample tapes.
実施例２
１４μｍ厚のポリエチレンテレフタレートフィルムに斜
め茎着法によりＣＯを被着させ、膜厚１０００人の強磁
性金属薄膜を形成した。Example 2 CO was deposited on a 14 μm thick polyethylene terephthalate film by the diagonal stem deposition method to form a 1000 μm thick ferromagnetic metal thin film.
次に、この強磁性金属ｇＩ膜表面に、Ｎ−スルホプロピ
ルメチルペンタデカフルオロオクタンアミド（Ｃ７Ｆ
＋ ５ｃＯＮ （Ｃ１１ｚ）Ｃ１ｌｚＣｌｔ２Ｃｌｌｙ
ＳＯｓｌｌ）をフレオン）３廐に溶解したものを、塗布
■が５■／ｄとなるように塗布し、１ｚ２インチ幅に裁
断してサンプルテープを作製した。Next, N-sulfopropylmethylpentadecafluorooctaneamide (C7F
+ 5cON (C11z)C1lzClt2Clly
A sample tape was prepared by dissolving SOsll) in Freon) at a coating rate of 5 cm/d and cutting it into a 1x2 inch width.
実施例３
１４μｍｌ￥のポリエチレンテレフタレートフィルムに
斜め蒸着法によりＣｏを被着させ、膜厚１０００人の強
磁性金属薄膜を形成した。Example 3 Co was deposited on a 14 μml polyethylene terephthalate film by oblique evaporation to form a ferromagnetic metal thin film with a thickness of 1000 ml.
次に、この強磁性金属薄膜表面に、Ｎ−スルホブロビル
プロピルベンタデカフルオロオクタンアミドのナトリウ
ム塩（ＣｔＦ、、Ｃ０Ｎ（Ｃ，ｌ１ｆｆ）ＣＩＩ□ＣＩ
ＩＺＣ１１２ＳＯＪａ ）をフレオンン容：・夜に１容
解したものを、塗布■が５■／ポとなるように塗布し、
１ｚ２インチ幅に裁断してナンプルテープを作製した。Next, on the surface of this ferromagnetic metal thin film, a sodium salt of N-sulfobrobylpropylbentadecafluorooctanamide (CtF, , C0N (C, l1ff) CII□CI
IZC112SOJa) Freon concentration: - Dissolve 1 solution at night and apply it so that the application rate is 5 ■/po.
A number tape was produced by cutting it into 1x2 inch width pieces.
実施例４
１４μｍｆ’ｌのポリエチレンテレフタレー）フィルム
に斜め蒸着法によりＣＯを被着させ、１Ｉ１２厚１００
０人の強磁性金属薄膜を形成した。Example 4 CO was deposited on a 14 μm f'l polyethylene terephthalate film by an oblique evaporation method, and a 1I12 thickness of 100
A ferromagnetic metal thin film was formed.
次に、この強磁性金属薄膜表面に、Ｎ−スルホプロピル
ブチルペンタデカフルオロオクタンアミドのナトリウム
塩（Ｃ７Ｆ、、Ｃ０Ｎ（Ｃ，＋１．）Ｃ１Ｉ□ＣＩｌ□
Ｃ１ｈＳＯｚＮａ〕をフレオン（８液に７８にしたもの
を、塗布■が５■／ｍ′となるように塗布し、１ｚ２イ
ンチ幅に裁断してサンプルテープを作製した。Next, on the surface of this ferromagnetic metal thin film, a sodium salt of N-sulfopropylbutylpentadecafluorooctanamide (C7F,,C0N(C,+1.)C1I□CIl□
A sample tape was prepared by applying Freon (8 liquids and 78% C1hSOzNa) at a coating rate of 5cm/m' and cutting the tape into 1x2 inch widths.
実施例５
１べｉｔ ｍ厚のポリエチレンテレフタレートフィル１
、に斜め蒸着法によりＣＯを被着させ、膜厚１０００人
の強磁性金属薄膜を形成した。Example 5 1 piece m-thick polyethylene terephthalate film 1
, was coated with CO by an oblique evaporation method to form a ferromagnetic metal thin film with a thickness of 1000 nm.
次に、この強磁性金属薄膜表面に、Ｎ−スルホプロピル
へキシルペンタデカフルオロオクタンアミドのカル７ウ
ム塩ＣＣ７Ｆ ｌ５ｃＯＮ （Ｃ６１１１３）ＣＩｌ□
ＣＩ（２ＣＩＩ□５Ｏ３１／２Ｃａ）をフレオン？容Ｖ
夜に？立片したものを、塗布層が５■／ｍ′となるよう
に塗布し、１ｚ２インチ幅に裁断してサンプルテープを
作製した。Next, on the surface of this ferromagnetic metal thin film, calcium salt of N-sulfopropylhexylpentadecafluorooctane amide CC7F 15cON (C61113)CIl□
Is CI (2CII□5O31/2Ca) a freon? Yong V
At night? The vertical strips were coated at a coating layer of 5 cm/m' and cut into 1 x 2 inch widths to prepare sample tapes.
実施例６
１４μｍａのポリエチレンテレフタレートフィルムに斜
め蒸着法によりＣＯを被着させ、膜厚１０００人の強磁
性金属薄膜を形成した。Example 6 CO was deposited on a 14 μm polyethylene terephthalate film by oblique evaporation to form a ferromagnetic metal thin film with a thickness of 1000 μm.
次に、この強（（ｉ性金属薄膜表面に、Ｎ−スルホプロ
ピルオクチルペンタデカフルオロオクタンアミドのナト
リウム塩（ＣｆｆＦＩＳＣ０１＋（Ｃ＠１１．？）ＣＨ
２ＣＩＩ□ＣＩ（２ＳＯＪａ）をフレオン？容？夜に）
８解したものを、塗布量が５■／ｄとなるように塗布し
、１７２インチ幅に裁断してサンプルテープを作製した
。Next, the sodium salt of N-sulfopropyloctylpentadecafluorooctanamide (CffFISC01+(C@11.?)CH
Freon for 2CII□CI (2SOJa)? Yong? At night)
A sample tape was prepared by coating the sample tape with a coating amount of 5 μm/d and cutting it into a width of 172 inches.
実施例７
１４μｍｌ！Ｊのポリエチレンテレフタレートフィルム
に斜め蒸着法によりＣｏを被着させ、膜厚１０００人の
強磁性金属薄膜を形成した。Example 7 14μml! Co was deposited on the polyethylene terephthalate film of J by an oblique evaporation method to form a ferromagnetic metal thin film with a thickness of 1000 nm.
次に、この強磁性金属薄膜表面に、Ｎ−スルホプロピル
デシルペンタデカフルオロオクタンアミドのナトリウム
塩（ＣｔＦ＋５ＣＯＮ（Ｃ＋ｏ）ｌｚ＋）ＣｔｌｚＣｌ
ｌｚＣｌ（ｚＳＯ３Ｎａ ）をフレオンン客演に）８鶏
７したものを、塗布型が５■／ｄとなるように塗布し、
１ｚ２インチ幅に裁断してサンプルテープを作製した。Next, on the surface of this ferromagnetic metal thin film, sodium salt of N-sulfopropyldecylpentadecafluorooctanamide (CtF+5CON(C+o)lz+)CtlzCl
Apply 8 parts of lzCl (zSO3Na) to a coating pattern of 5 cm/d,
A sample tape was prepared by cutting it into a 1x2 inch width.
実施例８
１４μｍ厚のポリエチレンテレフタレートフィルムに斜
め蒸竹法によりＣＯを被着させ、膜Ｊ７．１０００人の
強磁性金属薄膜を形成した。Example 8 CO was deposited on a 14 μm thick polyethylene terephthalate film by the oblique steaming method to form a ferromagnetic metal thin film of film J7.1000.
次に、この強磁性金属薄膜表面に、Ｎ−スルホプロピル
ドデシルペンタデカフルオロオクタンアミドのナトリウ
ム塩（ＣＪ＋５ＣＯＮ（Ｃ＋□１１゜５）Ｃｌｌ□ＣＩ
ＩｚＣＨ２ＳＯ，Ｎａ ）をフレオン溶液に溶解したも
のを、塗布量が５■／イとなるように塗布し、１／２イ
ンチ幅に裁断してサンプルテープを作製した。Next, on the surface of this ferromagnetic metal thin film, a sodium salt of N-sulfopropyldodecylpentadecafluorooctanamide (CJ+5CON(C+□11°5)Cll□CI
A sample tape was prepared by dissolving IzCH2SO,Na) in a Freon solution at a coating amount of 5 cm/I and cutting it into a 1/2 inch width.
作製された各サンプルテープについて、温度２５℃、相
対湿度（ＲＨ）５０％、および−５℃の各条件下での動
摩擦係数及びシャトル耐久性を測定した。この動摩擦係
数は、材質がステンレス（ＳＵＳ ３０４）のガイドピ
ンを用い、一定のテンションをかけ５ ｍｍ／ｓｅｃの
速度で送り、試験したものである。また、シャトル耐久
性は、１回につき２分間のシャトル走行を行い、出力が
一３ｄＢ低下までのシャトル回数で評価した。スチル耐
久性はポーズ状態での出力の一３ｄＢまでの減衰時間を
評価した。なお、比較例として、全く潤滑剤を被着しな
いブランクテープについても測定した。For each sample tape produced, the dynamic friction coefficient and shuttle durability were measured under the following conditions: 25°C, 50% relative humidity (RH), and -5°C. This dynamic friction coefficient was tested by using a guide pin made of stainless steel (SUS 304) and feeding it at a speed of 5 mm/sec under a constant tension. In addition, the shuttle durability was evaluated by running the shuttle for 2 minutes each time, and determining the number of shuttle runs until the output decreased by 13 dB. Still durability was evaluated by evaluating the decay time for the output to -3 dB in a pause state. As a comparative example, a blank tape to which no lubricant was applied was also measured.
結果を次表に示す。The results are shown in the table below.
（以下余白）
上記表から明らかなように、本発明の各実施例の条件下
で動摩擦係数が小さく、走行が極めて安定しており、ま
た１００回往復走行後もテープ表面の用傷は全く見られ
なかった。また、スチル耐久性も極めて良（，１５０回
シャトル走行を行っても出力の一３ｄＢ低下は見られな
かった。これに対して、潤滑剤層のない比較例のテープ
では、摩擦係数が往復走行回数が多くなるにつれて犬と
なり、走行も不安定でテープの［γ１室が見られ、耐久
性も悪いものであった。(Leaving space below) As is clear from the table above, under the conditions of each example of the present invention, the coefficient of dynamic friction was small and the running was extremely stable, and even after running back and forth 100 times, there were no scratches on the tape surface. I couldn't. In addition, the still durability is extremely good (no 13 dB decrease in output was observed even after 150 shuttle runs.On the other hand, with the comparative tape without a lubricant layer, the friction coefficient was lower when running back and forth. As the number of times the tape increased, it became harder to run, the running was unstable, [γ1 chambers were observed in the tape, and the durability was poor.
以上の説明からも明らかなように、本発明においては、
強磁性金属薄膜型の磁気記録媒体の潤滑剤トしてスルホ
ン化されたＮ−アルキルパーフルオロアルカンアミドを
用いているので、如何なる温度条件下においても動摩擦
係数を小さくすることができ、走行安定性や耐摩耗性に
（Ｎれた磁気記録媒体とすることができる。As is clear from the above description, in the present invention,
Since sulfonated N-alkyl perfluoroalkanamide is used as a lubricant for ferromagnetic metal thin film magnetic recording media, the coefficient of dynamic friction can be reduced under any temperature conditions, resulting in improved running stability. A magnetic recording medium with improved wear resistance and wear resistance can be obtained.
第１図は本発明を適用した磁気記録媒体の一措成例を示
す要部拡大断面図、第２図は本発明を適用した磁気記録
媒体の他の構成例を示す要部拡大断面図、第３図は本発
明を適用した磁気記録媒体のさらに他の構成例を示す要
部拡大断面図である。
１・・・非磁性支持体
２・・・強（イ１性金属薄膜
３・ ・ ・潤滑剤層
４・・・防錆剤層
５・・・バックコート層FIG. 1 is an enlarged cross-sectional view of a main part showing one example of a magnetic recording medium to which the present invention is applied; FIG. 2 is an enlarged cross-sectional view of a main part showing another example of a magnetic recording medium to which the present invention is applied; FIG. 3 is an enlarged sectional view of a main part showing still another example of the configuration of a magnetic recording medium to which the present invention is applied. 1...Non-magnetic support 2...Strong (I1) metal thin film 3...Lubricant layer 4...Rust preventive layer 5...Back coat layer
Claims (1)
金属薄膜上にスルホン化されたＮ−アルキルパーフルオ
ロアルカンアミドを被着したことを特徴とする磁気記録
媒体。1. A magnetic recording medium comprising a ferromagnetic metal thin film formed on a non-magnetic support, and a sulfonated N-alkyl perfluoroalkanamide deposited on the ferromagnetic metal thin film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21653986A JPS6371922A (en) | 1986-09-13 | 1986-09-13 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21653986A JPS6371922A (en) | 1986-09-13 | 1986-09-13 | Magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6371922A true JPS6371922A (en) | 1988-04-01 |
Family
ID=16690023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21653986A Pending JPS6371922A (en) | 1986-09-13 | 1986-09-13 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6371922A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6348266B1 (en) | 1998-09-22 | 2002-02-19 | Seagate Technology Llc | Amphiphillic lubricants for magnetic media |
-
1986
- 1986-09-13 JP JP21653986A patent/JPS6371922A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6348266B1 (en) | 1998-09-22 | 2002-02-19 | Seagate Technology Llc | Amphiphillic lubricants for magnetic media |
| US6660886B1 (en) | 1998-09-22 | 2003-12-09 | Seagate Technology Llc | Amphiphilic lubricants for magnetic media |
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