JPH0319775A - Abrasive sheet - Google Patents
Abrasive sheetInfo
- Publication number
- JPH0319775A JPH0319775A JP14904189A JP14904189A JPH0319775A JP H0319775 A JPH0319775 A JP H0319775A JP 14904189 A JP14904189 A JP 14904189A JP 14904189 A JP14904189 A JP 14904189A JP H0319775 A JPH0319775 A JP H0319775A
- Authority
- JP
- Japan
- Prior art keywords
- abrasive
- polishing
- vinyl chloride
- polyurethane resin
- binder
- 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
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〕
本発明は研磨シートに係わり．さらに詳しくはその結合
剤の改良に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an abrasive sheet. More specifically, it relates to improvements in the binder.
研磨シートは研磨材例えばＡｈＯｓとかＣｒｔＯｓなど
の硬度の大きな物質の微粒子を結合剤例えば塩化ビニル
系共重合体とかポリエステル樹脂などを有機浴媒Ｋ浴解
させた溶液中に分散し．これを可撓性支持体上に塗布乾
燥して作られている。The polishing sheet is made by dispersing fine particles of a highly hard abrasive material such as AhOs or CrtOs in a solution prepared by dissolving a binder such as vinyl chloride copolymer or polyester resin in an organic bath K bath. It is made by coating this on a flexible support and drying it.
従来の研磨シートの結合剤は．ポリエステル塩化ビニル
−酢酸ビニル系共重合体とこれ等結合剤を架橋硬化する
インシアネート系硬化剤を用いたものが大半であった。The binder for conventional abrasive sheets is. Most of them used a polyester vinyl chloride-vinyl acetate copolymer and an incyanate curing agent for crosslinking and curing these binders.
最近，研磨７］Ｄ工費低減のため．研磨時間の短縮がば
から凡ている。それＶＣは研磨ンートと被研磨物との摺
動スピードを速〈ｊ−たり．摺接圧力をあげたりしてい
る。なお仕上げ而粗さを平滑化するため．より微粒の研
磨材が用いられるため．研磨シートと被研磨物との摩擦
力も大きくなる。上記理由によって，研磨時に摩擦熱量
が多くなり，この熱により従来の結合剤では熱分解が起
こり．研磨粉が落ちこぼｆ′Ｌたり，研磨材面が剥離｛
−たりして被研磨面に悪影響を与える。Recently, polishing 7]D To reduce processing costs. The reduction in polishing time is obvious. The VC increases the sliding speed between the polishing tool and the object to be polished. The sliding contact pressure is increased. In addition, in order to smooth out the roughness during finishing. This is because finer abrasive particles are used. The frictional force between the polishing sheet and the object to be polished also increases. For the above reasons, the amount of frictional heat increases during polishing, and this heat causes thermal decomposition of conventional binders. Polishing powder may fall off, or the surface of the polishing material may peel off.
- This will adversely affect the polished surface.
この発明は．上記従来の研磨シートが持っていた，研磨
シートの耐熱性が不十分であるという欠点を解決し，以
って信頼性に優れｆｃ． ？ｉ７１磨シートを提供する
ことを目的と１″る。This invention... This solves the drawback of the conventional polishing sheet mentioned above, that is, the heat resistance of the polishing sheet is insufficient, and thus the fc. ? Our aim is to provide i71 polishing sheets.
本発明者らは．上記問題点を解決するため鋭意検討した
結果．結合剤或分としてガラス転移温度が０〜６０℃と
高いポリウレタン初脂と塩化ビニル−酢酸ビニル系共直
合体を併用することにより研磨材層の耐Ｍ性を向上させ
ることができた。The inventors. This is the result of intensive study to resolve the above problems. The M resistance of the abrasive layer could be improved by using as a binder a polyurethane resin having a high glass transition temperature of 0 to 60 DEG C. and a vinyl chloride-vinyl acetate copolymer.
ガラス転移温度の高いポリウレタン樹脂としては．例え
ば日本ポリウレタン社製Ｎ２３０１．東洋紡社製ＵＲ−
８２００，ＩＪＲ−８３００．あるいはモートンノーフ
イツテ社製ＣＡ−１３９などが挙げられる。As a polyurethane resin with a high glass transition temperature. For example, N2301 manufactured by Nippon Polyurethane Co., Ltd. Toyobo Co., Ltd. UR-
8200, IJR-8300. Another example is CA-139 manufactured by Morton Norffitte.
ガラス転移温度の低いポリウレタン樹脂を用いインシア
ネート化合物で架橋する万法によっても研磨材層のガラ
ス転移温度を上げることができるが．この方法では架橋
反応が化学量論的ＶＣＦｉ行なわ７Ｌず，未反応の低分
子量のインシアネート化合物力；残留し．これが層面上
に浸み出し．摩擦抵抗の増大を来たす。一方．カラス転
移点の高いポリウレタン樹脂では摩擦抵抗の増大が認め
らｒＬない。It is also possible to raise the glass transition temperature of the abrasive layer by using a polyurethane resin with a low glass transition temperature and crosslinking it with an incyanate compound. In this method, the crosslinking reaction is carried out in a stoichiometric manner, and unreacted low molecular weight incyanate compounds remain. This seeps onto the surface of the layer. This causes an increase in frictional resistance. on the other hand. No increase in frictional resistance was observed with polyurethane resins having a high glass transition point.
上記ポリウレタン樹脂のみで研ｒｉシートを作製−『る
こともできるが．研磨材の粒度が微細になると研Ｉ！！
′材の分紋が悪くなる。このため微粒子の分散を艮〈す
る塩化ビニル−酢酸ビニル共重合体を併用する。It is also possible to make a polishing sheet using only the above polyurethane resin. When the grain size of the abrasive becomes fine, it becomes sharp! !
'The division of the wood becomes poor. For this purpose, a vinyl chloride-vinyl acetate copolymer is used in combination to prevent fine particle dispersion.
この塩化ビニル−酢酸ビニル共重体として好１しいもの
として，０．０１〜５重一凌％の水酸基を含有するもの
がよい。さらに好１しいものと１〜で．そノ上ｖｃカル
ボン酸塩．スルホン酸？Ｅ．． ＋）７酸：ＪＬｐよ
びそれらの塩．アミノ基またぱアンモニウム基を有する
ものがある。The vinyl chloride-vinyl acetate copolymer preferably contains 0.01 to 5% by weight of hydroxyl groups. Even more preferable 1 and 1 ~. Above all, VC carboxylate. Sulfonic acid? E. ．． +) 7 acids: JLp and their salts. Some have amino groups or ammonium groups.
しかし．塩化ビニル−酢酸ビニル共重合体は．研磨材粉
の分散性向上には役立つが．その１史用竃が多くなると
．ｍ膜がもろくなる。よってその使用量は．塩化ビニル
−酢酸ビニル共重合体／ポリウレタン＝”／１００〜６
０／４ｏの範囲が良い。but. Vinyl chloride-vinyl acetate copolymer. Although it is useful for improving the dispersibility of abrasive powder. Part 1: When the number of historical stoves increases. m The membrane becomes brittle. Therefore, the amount used is. Vinyl chloride-vinyl acetate copolymer/polyurethane=”/100-6
A range of 0/4o is good.
以下に本発明の実施例について説明１−る。 Examples of the present invention will be explained below.
実施例ｌ
ａ−ＡｆｌｚＯｓ ８０ ｍ柑
ｆＲ塩化ビニル−酢酸ビニル−ビニルアルコール共重合
体（ＵＣＣ社製．ＶＡＧＨ ） ４ ４よ景部
ポリウレタン樹脂（日本ボリクレタン社製，Ｎ２３０１
，Ｔｇ：２２℃） １６重量部？チルエチ
ルケトン ２０重量部トルエン
８０重量部上記組収の塗料を厚さ２５
μ惧のポリエステルフィルム上に塗布し、７５°〜１２
０℃の温度で乾燥し．研磨層の厚みが１５μ飢の研磨シ
ートを作或した。Example 1 a-AflzOs 80mFR Vinyl chloride-vinyl acetate-vinyl alcohol copolymer (manufactured by UCC Co., Ltd. VAGH) 4 4 Side polyurethane resin (manufactured by Nippon Polycretan Co., Ltd., N2301
, Tg: 22℃) 16 parts by weight? Tyl ethyl ketone 20 parts by weight toluene
80 parts by weight of the above-mentioned paint to a thickness of 25
Coated on a polyester film of 75° to 12°
Dry at a temperature of 0°C. A polishing sheet with a polishing layer thickness of 15 μm was prepared.
実施例２
実施例１１Ｃ＞いて．塩化ビニル〜酢酸ビニル−ピニル
アルコールの匣用量４重量部を１２重量部に．ポリウレ
タン相脂の■用ｆ［１６重量部を８重量部に変更した以
外は，実施例１と同様にして研磨シートを作製した。Example 2 Example 11C> The amount of vinyl chloride - vinyl acetate - pinyl alcohol in a box was changed from 4 parts by weight to 12 parts by weight. A polishing sheet was prepared in the same manner as in Example 1, except that the polyurethane phase resin was changed from 16 parts by weight to 8 parts by weight.
比較例１
実施例ｌにかいて．ポリウレタン松脂として．Ｎ２３０
１ＶＣ代えて大日本インキ社製ＨＩ−２０００（Ｔｇ：
−５℃）を同重用いた以外は実施例１と同様にして研磨
シートを作製した。Comparative Example 1 As in Example 1. As polyurethane resin. N230
1VC replaced with HI-2000 manufactured by Dainippon Ink Co., Ltd. (Tg:
An abrasive sheet was prepared in the same manner as in Example 1 except that the same weight of the polishing material (-5°C) was used.
比較例２
実施例２１／ｌ：Ｄいてポリウレタン樹脂としてＮ２３
０ｌに代えて． Ｈｌ〜２０００を回當用いた以外は実
施例２と同様にして研磨シートを作製した。Comparative Example 2 Example 21/l: D and N23 as polyurethane resin
Instead of 0l. A polishing sheet was produced in the same manner as in Example 2 except that Hl~2000 was used again.
上記各実施例，比較例で得た研磨シートを用いて．ハー
ド磁気ディスクの磁性層面を研磨したときの研磨層，被
研磨面の傷の状Ｐｕ４＞よび．被研磨面への研磨層ぐず
の付着の様子を目視で観察した。Using the polishing sheets obtained in each of the above Examples and Comparative Examples. When polishing the magnetic layer surface of a hard magnetic disk, the polishing layer and scratches on the surface to be polished Pu4> and. The adhesion of polishing layer debris to the surface to be polished was visually observed.
結果を下表に示す。The results are shown in the table below.
以上説明したように．ガラス転移温度の高いポリウレタ
ン樹脂とω［磨材の分敗性の良い塩化ビニル−酢酸ビニ
ル共重合体を結合剤として併用した〈／
研磨シートは耐熱性が向上しよって，“使用＃Ｅ刃で研
磨材層からのぐずの発生がなく．研磨材層．被研磨面の
何れにも傷を発生させない優れた研磨シートが得られる
ことが明らかである。As explained above. Using a polyurethane resin with a high glass transition temperature and ω [vinyl chloride-vinyl acetate copolymer, which has good decomposition properties for abrasive materials, as a binder] the abrasive sheet has improved heat resistance. It is clear that an excellent abrasive sheet can be obtained in which no crumbs are generated from the abrasive layer and no scratches are generated on either the abrasive layer or the surface to be polished.
Claims (1)
磨層を備えた研磨シートにおいて、結合剤として塩化ビ
ニル−酢酸ビニル系共重合体とＴｇが０〜３０℃である
ポリウレタン樹脂よりなることを特徴とする研磨シート
。An abrasive sheet comprising a coating abrasive layer made of abrasive particles and a binder on a flexible support, comprising a vinyl chloride-vinyl acetate copolymer as the binder and a polyurethane resin having a Tg of 0 to 30°C. An abrasive sheet characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14904189A JPH0319775A (en) | 1989-06-12 | 1989-06-12 | Abrasive sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14904189A JPH0319775A (en) | 1989-06-12 | 1989-06-12 | Abrasive sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0319775A true JPH0319775A (en) | 1991-01-28 |
Family
ID=15466360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14904189A Pending JPH0319775A (en) | 1989-06-12 | 1989-06-12 | Abrasive sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0319775A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1620501A4 (en) * | 2003-05-05 | 2006-05-10 | Honda Motor Co Ltd | Scratch-resistant polypropylene composition |
| CN106470800A (en) * | 2014-07-07 | 2017-03-01 | 阪东化学株式会社 | Grinding film |
-
1989
- 1989-06-12 JP JP14904189A patent/JPH0319775A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1620501A4 (en) * | 2003-05-05 | 2006-05-10 | Honda Motor Co Ltd | Scratch-resistant polypropylene composition |
| CN106470800A (en) * | 2014-07-07 | 2017-03-01 | 阪东化学株式会社 | Grinding film |
| CN106470800B (en) * | 2014-07-07 | 2019-06-18 | 阪东化学株式会社 | abrasive film |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0325851B2 (en) | ||
| US5527594A (en) | Optical tape | |
| JPS63121117A (en) | magnetic recording medium | |
| US5370718A (en) | Abrasive tape | |
| JPS59154646A (en) | Magnetic recording medium | |
| JP2987383B2 (en) | Polishing sheet | |
| JPH0514324B2 (en) | ||
| JPH02260124A (en) | Magnetic recording medium | |
| JPS6069818A (en) | Magnetic recording medium | |
| JPS62257615A (en) | magnetic recording medium | |
| JPH0319776A (en) | Abrasive sheet and manufacture thereof | |
| JP2638839B2 (en) | Magnetic recording media | |
| JPS61269224A (en) | Magnetic recording medium | |
| JPS62197471A (en) | Resin for magnetic paint | |
| JPS62154229A (en) | magnetic recording medium | |
| JP3313140B2 (en) | Magnetic recording medium and method of manufacturing the same | |
| JPH0289215A (en) | Magnetic recording medium | |
| JP2538296B2 (en) | Magnetic recording media | |
| JPH0256722A (en) | Magnetic recording medium | |
| JPS60111342A (en) | Calender device | |
| JPH058179A (en) | Polishing tape | |
| JPH0552569B2 (en) | ||
| JPH03278317A (en) | Magnetic recording medium | |
| JPH02256467A (en) | Manufacturing method of polishing tape | |
| JPH0231319A (en) | Magnetic recording medium |