JPH0419075A - Polishing tool - Google Patents
Polishing toolInfo
- Publication number
- JPH0419075A JPH0419075A JP11751590A JP11751590A JPH0419075A JP H0419075 A JPH0419075 A JP H0419075A JP 11751590 A JP11751590 A JP 11751590A JP 11751590 A JP11751590 A JP 11751590A JP H0419075 A JPH0419075 A JP H0419075A
- Authority
- JP
- Japan
- Prior art keywords
- polishing
- microgel
- polishing tool
- functional group
- abrasive
- 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.)
- Granted
Links
- 238000005498 polishing Methods 0.000 title claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 21
- 125000000524 functional group Chemical group 0.000 claims abstract description 10
- 239000003973 paint Substances 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims description 16
- 239000011230 binding agent Substances 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 229920000728 polyester Polymers 0.000 claims description 4
- 229920000178 Acrylic resin Polymers 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 229920001225 polyester resin Polymers 0.000 claims description 3
- 239000004645 polyester resin Substances 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 abstract description 5
- 239000004094 surface-active agent Substances 0.000 abstract description 5
- 239000002270 dispersing agent Substances 0.000 abstract description 4
- 238000011109 contamination Methods 0.000 abstract description 3
- 239000000314 lubricant Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 18
- 238000000576 coating method Methods 0.000 description 18
- 239000000203 mixture Substances 0.000 description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical group CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- JZQOJFLIJNRDHK-CMDGGOBGSA-N alpha-irone Chemical compound CC1CC=C(C)C(\C=C\C(C)=O)C1(C)C JZQOJFLIJNRDHK-CMDGGOBGSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000012629 purifying agent Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は研磨テープ等の研磨具に関し、特に磁気ヘッド
、磁気ディスク等の電子部品の精密研磨に適する研磨テ
ープに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a polishing tool such as a polishing tape, and more particularly to a polishing tape suitable for precision polishing of electronic components such as magnetic heads and magnetic disks.
(従来の技術とその問題点)
電子部品等の仕上げ面の精密化が益々要求されているが
、それにつれて研磨具に使用される研磨材粉末の粒子寸
法は益々微小なものが求められる。研磨材粒子が微小に
なるにつれて、その表面エネルギーが増大するため、研
磨材粒子は凝集し易くなり、もし凝集した研磨材粒子が
支持フィルムに塗布されて研磨テープ等の研磨具が構成
された場合、被研磨物の表面に損傷を与える原因となる
。(Prior Art and its Problems) There is an increasing demand for more precise finished surfaces of electronic parts, etc., and as a result, the particle size of the abrasive powder used in polishing tools is required to be smaller and smaller. As abrasive particles become finer, their surface energy increases, making them more likely to aggregate, and if aggregated abrasive particles are applied to a support film to form an abrasive tool such as an abrasive tape. , causing damage to the surface of the object to be polished.
従来、研磨材粉末の分散剤としては界面活性剤のような
低分子の分散剤が使用されているが、研磨テープを長期
保存した場合、添加された界面活佐剤が表面に滲出(ブ
リード)して被研磨物の表面に吸着し、表面の汚染の原
因となったり、塗膜な可塑化する原因となる。Traditionally, low-molecular dispersants such as surfactants have been used as dispersants for abrasive powder, but when abrasive tapes are stored for a long period of time, the added surfactant adjuvants ooze out to the surface (bleed). It adsorbs to the surface of the object to be polished, causing surface contamination and plasticization of the coating film.
(発明の目的)
本発明は、微粒化した研磨材粉末を使用して分散性の良
い研磨層を構成した研磨具を提供することを目的とする
0本発明の他の目的は滲出の問題を有しない研磨具を提
供することを目的とする。(Objective of the Invention) An object of the present invention is to provide a polishing tool in which a polishing layer with good dispersibility is formed using finely divided abrasive powder.Another object of the present invention is to solve the problem of exudation. The purpose is to provide a polishing tool that does not have
(問題点を解決する手段)
本発明は、可撓性を有する支持体上に、研磨材粉末及び
結合剤を含む研磨塗料を塗布し乾燥してなる研磨層を形
成した研磨具において、表面官能基を有するポリマーグ
ラフト化超微粒マイクロゲルを添加したことを特徴とす
る研磨具により、発明の目的を達成する。(Means for Solving the Problems) The present invention provides a polishing tool in which a polishing layer is formed by coating a flexible support with a polishing paint containing an abrasive powder and a binder and drying the polishing layer. The object of the invention is achieved by an abrasive tool characterized by the addition of polymer-grafted ultrafine microgels having groups.
本発明に使用する表面官能基を有するポリマーグラフト
化超微粒マイクロゲルは非常に微粒であるため、表面積
が大きく粘弾性の制御がし易い。Since the polymer-grafted ultrafine microgel having a surface functional group used in the present invention is extremely fine, it has a large surface area and its viscoelasticity can be easily controlled.
この超微粒マイクロゲルは研磨材粉末及びバインダー樹
脂のいずれに対しても親和性及び相溶性が高く、研磨材
粉末塗料の分散が均一になり、従って支持体に塗布乾燥
した塗膜における微粒研磨材粉末の凝集が防止され平滑
性が向上する。又ゲル及びバインダー樹脂相は塗膜中で
連続層になり、機械的及び物理的特性、耐熱性、及び耐
摩耗性が向上するため、研磨性能及び研磨具の耐久性も
向上する。又界面活性剤等の分散剤や潤滑剤を使用しな
いから、長期保存の後にも滲出の問題がなく、被研磨物
の表面を汚染したり、塗膜を可塑化したりすることがな
い。This ultra-fine microgel has high affinity and compatibility with both the abrasive powder and the binder resin, resulting in uniform dispersion of the abrasive powder coating, and therefore the fine abrasive particles in the coating film applied to the support and dried. Powder agglomeration is prevented and smoothness is improved. The gel and binder resin phases also form a continuous layer in the coating, improving mechanical and physical properties, heat resistance, and abrasion resistance, thereby improving polishing performance and durability of the polishing tool. Furthermore, since no dispersant or lubricant such as a surfactant is used, there is no problem of oozing even after long-term storage, and there is no possibility of contaminating the surface of the object to be polished or plasticizing the coating film.
マイクロゲルを構成する樹脂はアクリル樹脂、ポリエス
テル樹脂、アクリル−ポリエステル共重合体より選択さ
れる。又マイクロゲルの粒子径は0.02〜0.5μm
である0粒子径がこれよりも大きいと分散性が阻害され
る。粒子径がこれよりも小さいと最早ゲルではなく、本
発明の意図した効果は得られない。The resin constituting the microgel is selected from acrylic resin, polyester resin, and acrylic-polyester copolymer. In addition, the particle size of microgel is 0.02 to 0.5 μm.
If the zero particle diameter is larger than this, dispersibility will be inhibited. If the particle size is smaller than this, it is no longer a gel, and the intended effects of the present invention cannot be obtained.
マイクロゲルの表面は、酸性基、塩基性基、及び/又は
極性基から選択された表面官能基が結合されている。こ
れらの基は、これらの基を有するモノマーをアクリル樹
脂、ポリエステル樹脂、アクリル−ポリエステル共重合
体にグラフトと重合することにより製造することが出来
る。このようなモノマーの例にはアクリル酸、メタクリ
ル酸等の酸性基を有するもの、マレイン酸等の2塩基性
酸に低級アルコールを反応させたもの等の水酸基を有す
るもの、アミンのような塩基性基を有するもの等がある
。これらの官能基は研磨材粉末に対して親和性を有する
。一方ゲルの本体を構成する樹脂はバインダー樹脂に対
して親和性で且つ相溶性である。Surface functional groups selected from acidic groups, basic groups, and/or polar groups are bonded to the surface of the microgel. These groups can be produced by grafting and polymerizing monomers having these groups onto acrylic resins, polyester resins, and acrylic-polyester copolymers. Examples of such monomers include those with acidic groups such as acrylic acid and methacrylic acid, those with hydroxyl groups such as those obtained by reacting dibasic acids such as maleic acid with lower alcohols, and basic monomers such as amines. There are some that have groups. These functional groups have an affinity for the abrasive powder. On the other hand, the resin constituting the main body of the gel has an affinity for and is compatible with the binder resin.
マイクロゲルの添加量は研磨材塗料の固形分基準で1〜
20重量%、好ましくは1〜10!iii%である。こ
の範囲よりも少ないと分散性が低下する。一方この範囲
を超えるとゲル化する。The amount of microgel added is 1 to 1 based on the solid content of the abrasive paint.
20% by weight, preferably 1-10! iii%. When the amount is less than this range, the dispersibility decreases. On the other hand, if it exceeds this range, it will gel.
なお、研磨材粉末はダイヤモンド、アルミナ、a酸化鉄
等の従来公知の研磨材粉末が使用でき、その平均粒子径
は目的研磨精度に応じて1μm以下のものが使用出来る
。又バインダーとしては熱可塑性、熱硬化性、電子線硬
化性樹脂等の公知のものが使用出来る。Incidentally, conventionally known abrasive powders such as diamond, alumina, a-iron oxide, etc. can be used as the abrasive powder, and those having an average particle diameter of 1 μm or less can be used depending on the desired polishing accuracy. Further, as the binder, known binders such as thermoplastic, thermosetting, and electron beam curable resins can be used.
実施例1
マイクロゲルの添加による研磨材粉末の分散安定性を調
べた。研磨材塗料の配合は次の通りであった・
研磨材(ダイヤモンド)粉末 40重量%(平均粒径
0.3μm)
バインダー樹脂 45重量%(ポリエス
テル)
マイクロゲル 15重量%(SGP−
154、日本ペイント製)
平均粒子径 80nm
スチレン−アクリル共重合体
不揮発分 20重量%
官能基 水酸基
上記の配合物を充分に混合し、常温で静置して研磨材粉
末の沈降体積を測定した。比較のためマイクロゲルを添
加しないものを使用して同様に沈降を測定した。その結
果を第1図に示す。Example 1 The dispersion stability of abrasive powder by adding microgel was investigated. The composition of the abrasive paint was as follows: Abrasive (diamond) powder 40% by weight (average particle size 0.3 μm) Binder resin 45% by weight (polyester) Microgel 15% by weight (SGP-
154, manufactured by Nippon Paint) Average particle size: 80 nm Styrene-acrylic copolymer Non-volatile content: 20% by weight Functional group: Hydroxyl group The above formulations were thoroughly mixed, allowed to stand at room temperature, and the sedimentation volume of the abrasive powder was measured. For comparison, sedimentation was measured in the same manner using a sample without the addition of microgel. The results are shown in FIG.
図から明らかなようにマイクロゲルを添加すると分散安
定性が著しく向上した。As is clear from the figure, addition of microgel significantly improved dispersion stability.
実施例2
この例では次の組成を用いて研磨具を作製し、塗膜強度
及び表面性状を測定した。Example 2 In this example, a polishing tool was produced using the following composition, and the coating film strength and surface texture were measured.
研磨材(アルミナ)粉末 40重量%(平均粒
径0.4μm)
バインダー樹脂N2304 40〜60重量%(日本ポ
リウレタン)
マイクロゲル 0〜20重量%(SGP
−154)
平均粒子径 80%m
スチレン−アクリル共重合体
不揮発分 20重量%
官能基 水酸基
上記の配合物を充分に混合して研磨塗料を調製し、ポリ
エステルフィルム支持体に塗布した。瀉剤を乾燥除去し
た。Abrasive material (alumina) powder 40% by weight (average particle size 0.4 μm) Binder resin N2304 40-60% by weight (Japan Polyurethane) Microgel 0-20% by weight (SGP
-154) Average particle size: 80% m Styrene-acrylic copolymer Non-volatile content: 20% by weight Functional group: Hydroxyl group The above formulation was thoroughly mixed to prepare an abrasive coating material, which was applied to a polyester film support. The purifying agent was removed by drying.
このうちのマイクロゲルを10%添加した塗膜を使用し
てフロッピーディスク用の磁気ヘッドの最終研磨をテー
プ速度40 m 7分の速度で行ない、仕上がり面を5
00倍の光学顕微鏡で観察し、傷発生率とテープの耐久
性を評価した。その結果通常0.3%程度発生する面傷
(粒子径で規定される通常の研磨筋より大きいスクラッ
チ傷)は全く発生せず。研磨テープ10−ルから研磨さ
れるヘット数は約30%向上した。Final polishing of a magnetic head for a floppy disk was performed using a coating film containing 10% microgel at a tape speed of 40 m/7 min, and the finished surface was
The tape was observed using a 00x optical microscope to evaluate the scratch rate and durability of the tape. As a result, surface scratches (scratches larger than normal polishing streaks defined by particle size), which normally occur at around 0.3%, did not occur at all. The number of heads polished from 10 mm of polishing tape was increased by about 30%.
又塗膜強度を測定した。結果を第2図に示した。図から
マイクロゲルの添加量が多いほど塗膜強度が向上するこ
と、約10%を超えると効果が次第に飽和することが分
かる。従って、約20重量%以上で使用しても意味がな
い。The strength of the coating film was also measured. The results are shown in Figure 2. The figure shows that the coating film strength improves as the amount of microgel added increases, and that the effect gradually becomes saturated when the amount exceeds about 10%. Therefore, there is no point in using more than about 20% by weight.
実施例3
この例では次の組成を用いて研磨具を作製し、塗膜強度
及び表面性状を測定した。Example 3 In this example, a polishing tool was prepared using the following composition, and the coating film strength and surface texture were measured.
研磨材(α酸化鉄)粉末 40重量%(平均粒径0
2μm)
バインダー樹脂 40〜60重量%(ポリ塩化ビ
ニル)
マイクロゲル 0〜20重量%平均粒子径
80%m
スチレン−アクリル共重合体
不揮発分 20重量%
官能基 水酸基
マイクロゲルを5重量%添加した塗膜を使用してフェラ
イトヘッドを10秒間仕上研磨し、ヘッド研磨面を50
0倍の光学顕微鏡で観察し、ヘッド仕上り面とテープの
耐久性を評価した。その結果、10−ルから研磨される
ヘッドの個数は無添加のものと比較した約30%向上し
た。又塗膜強度を測定したところ第3図の結果を得た。Abrasive (α iron oxide) powder 40% by weight (average particle size 0
2μm) Binder resin 40-60% by weight (polyvinyl chloride) Microgel 0-20% by weight Average particle diameter
80%m Styrene-acrylic copolymer non-volatile content 20% by weight Functional group Hydroxyl group A coating film containing 5% by weight of microgel was used to finish polish the ferrite head for 10 seconds, and the polished surface of the head was polished at 50% by weight.
The finished surface of the head and the durability of the tape were evaluated by observing with a 0x optical microscope. As a result, the number of heads that could be polished from 10 mm was increased by about 30% compared to the one without additives. Furthermore, when the coating film strength was measured, the results shown in Figure 3 were obtained.
塗膜強度はマイクロゲルの添加量が10%を超えるとし
第に飽和することが分かった。It was found that the coating film strength becomes saturated when the amount of microgel added exceeds 10%.
るマイクロゲルの添加量と研磨テープの塗膜強度を示す
グラフ、及び第3図はa酸化鉄粉末を使用した塗膜にお
けるマイクロゲルの添加量と研磨テープの塗膜強度を示
すグラフである。Figure 3 is a graph showing the amount of microgel added and the strength of the polishing tape coating, and Figure 3 is a graph showing the amount of microgel added and the strength of the polishing tape coating using iron oxide powder.
第1図はマイクロゲルを添加したダイヤモンド粉末塗料
と無添加の塗料の分散安定性を示すグラフ、第2図はア
ルミナ粉末を使用した塗膜におけ図面の浄書(内容に変
更なし)
マイ20デ)に為加i
(wt%)
マイ707′)シ墳カ111
(wt%)
手続補正!(加)
平成2年8月9日
発明の名称
研磨具
代
理
人
〒103
補正命令通知の日付
平成2年7月31日
補正の対象
図面
通Figure 1 is a graph showing the dispersion stability of a diamond powder paint containing microgel and a paint without additives. Figure 2 is an engraving of a drawing for a coating film using alumina powder (no changes in content). ) to Tame i (wt%) My707') Shifunka111 (wt%) Procedure correction! (Canada) August 9, 1990 Name of invention Polishing tool Agent 〒103 Date of notification of amendment order July 31, 1990 Drawings subject to amendment
Claims (4)
を含む研磨塗料を塗布し乾燥してなる研磨層を形成した
研磨具において、表面官能基を有するポリマーグラフト
化超微粒マイクロゲルを添加したことを特徴とする研磨
具。(1) In a polishing tool in which a polishing layer is formed by applying a polishing paint containing abrasive powder and a binder onto a flexible support and drying it, a polymer-grafted ultrafine microgel having a surface functional group is used. A polishing tool characterized by adding.
あることを特徴とする前記第1項記載の研磨具。(2) The polishing tool according to item 1 above, wherein the microgel has a particle size of 0.02 to 0.5 μm.
リエステル樹脂、アクリル−ポリエステル共重合体より
選択される前記第1項又は第2項記載の研磨具。(3) The polishing tool according to item 1 or 2, wherein the resin constituting the microgel is selected from acrylic resin, polyester resin, and acrylic-polyester copolymer.
選択されている前記第1項ないし3項のいずれかに記載
の研磨具。(4) The polishing tool according to any one of items 1 to 3, wherein the surface functional group is selected from acidic groups, basic groups, and polar groups.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2117515A JP2975047B2 (en) | 1990-05-09 | 1990-05-09 | Polishing tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2117515A JP2975047B2 (en) | 1990-05-09 | 1990-05-09 | Polishing tool |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0419075A true JPH0419075A (en) | 1992-01-23 |
JP2975047B2 JP2975047B2 (en) | 1999-11-10 |
Family
ID=14713675
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2117515A Expired - Lifetime JP2975047B2 (en) | 1990-05-09 | 1990-05-09 | Polishing tool |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2975047B2 (en) |
-
1990
- 1990-05-09 JP JP2117515A patent/JP2975047B2/en not_active Expired - Lifetime
Also Published As
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JP2975047B2 (en) | 1999-11-10 |
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