JP2010234477A - Bristle material for polishing brush, method for manufacturing the same, and polishing brush - Google Patents
Bristle material for polishing brush, method for manufacturing the same, and polishing brush Download PDFInfo
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Abstract
Description
本発明は、金属鋼板の製造工程などにおいて金属表面を研磨するために使用する研磨ブラシ用毛材の改良に関し、さらに詳しくは、従来の研磨ブラシ用毛材に比べ耐熱性と耐薬品性に優れ、特にステンレス鋼板などの表面の酸液洗浄研磨加工および乾式研磨に好適な研磨ブラシ用毛材、その製造方法および研磨ブラシに関するものである。 The present invention relates to an improvement in a polishing brush bristle material used for polishing a metal surface in a manufacturing process of a metal steel sheet, and more specifically, has superior heat resistance and chemical resistance compared to a conventional bristle material for an abrasive brush. In particular, the present invention relates to a polishing brush bristle material suitable for acid solution cleaning and dry polishing of a surface of a stainless steel plate, a manufacturing method thereof, and a polishing brush.
従来から、鋼板などの金属の表面および端面の研磨加工工程、または金属鋼板の製造工程で特に鉄板やステンレス鋼板などの表面研磨加工を行う工程において使用される研磨ブラシ用毛材としては、研磨砥材粒子を含有する合成樹脂組成物からなるモノフィラメントを素材としたものが知られており、例えば、この研磨砥材粒子を含有するモノフィラメントを研磨ブラシ用毛材として植毛したセグメントブラシ、カップブラシ、ディスクロールブラシやチャンネルロールブラシなどの研磨ブラシを、被処理物である鉄板やステンレス鋼板などの表面に押圧し、回転を付与することによって、被処理物の表面研磨加工が行われている。 Conventionally, a bristle material for a polishing brush used in a polishing process for a surface and an end surface of a metal such as a steel plate, or a process for performing a surface polishing process such as an iron plate or a stainless steel plate in a manufacturing process of a metal steel plate, For example, a segment brush, a cup brush, and a disk in which a monofilament comprising a synthetic resin composition containing material particles is used as a raw material for the abrasive brush. Surface polishing of a workpiece is performed by pressing a polishing brush such as a roll brush or a channel roll brush against the surface of the workpiece, such as an iron plate or a stainless steel plate, and applying rotation.
従来、研磨ブラシ用毛材の主な素材としては、ナイロン６、ナイロン６６、ナイロン６／６６共重合体、ナイロン６１０、ナイロン６１２，ナイロン１２などのポリアミド系樹脂、およびポリブチレンテレフタレートなどのポリエステル系樹脂から選ばれた合成樹脂が、ブラシの種類や用途に応じて適宜使用されている。 Conventionally, as a main material of abrasive brush hair, nylon 6, nylon 66, nylon 6/66 copolymer, nylon 610, nylon 612, nylon 12 and other polyamide resins, and polybutylene terephthalate and other polyester resins A synthetic resin selected from resins is appropriately used depending on the type and application of the brush.
一方、研磨ブラシ用毛材に含有される研磨砥材粒子としては、コークス粉、ボーキサイト、酸化アルミナなどに代表されるアルミナ系砥材粒子、白ケイ石、砥粉などの炭化ケイ素系砥材粒子および人工ダイヤモンド砥材粒子などが使用されている。 On the other hand, as abrasive abrasive particles contained in the bristle material for abrasive brushes, alumina abrasive particles represented by coke powder, bauxite, alumina oxide, etc., silicon carbide abrasive particles such as white silica, abrasive powder, and the like Artificial diamond abrasive particles are used.
そして、これら合成樹脂と研磨砥材粒子とからなる混合物を溶融紡糸したモノフィラメントが、研磨ブラシ用毛材として従来から広く使用されてきた。 A monofilament obtained by melt spinning a mixture of these synthetic resins and abrasive particles has been widely used as a hair material for polishing brushes.
一般に、鉄板やステンレス鋼板などの金属鋼板の表面を研磨加工するに際しては、金属鋼板に、水、アルカリ液または酸液などの冷却液または洗浄液を散布しながら研磨作業が行われてきた。 In general, when polishing the surface of a metal steel plate such as an iron plate or a stainless steel plate, a polishing operation has been performed while spraying a cooling liquid or a cleaning liquid such as water, an alkali liquid or an acid liquid on the metal steel sheet.
しかし、近年では、環境問題から排水処理削減を目的に、冷却液または洗浄液の使用量を減らすことにより、排水処理量の削減が図られている。そして、冷却液または洗浄液を使用しない研磨方法が試みられているが、従来のポリアミド系樹脂およびポリエステル系樹脂を素材とする研磨ブラシを使用して、冷却液または洗浄液を使用せずに研磨を行う方法においては、研磨ブラシ毛材と被研磨物例えばステンレス鋼板との摩擦熱により、研磨ブラシ毛材が溶融してステンレス鋼板に溶着するという問題が起こっており、耐熱性の優れた研磨ブラシ毛材が要求されている。 However, in recent years, the amount of wastewater treatment has been reduced by reducing the amount of cooling liquid or cleaning liquid used for the purpose of reducing wastewater treatment due to environmental problems. A polishing method that does not use a cooling liquid or a cleaning liquid has been tried, but polishing is performed without using a cooling liquid or a cleaning liquid by using a conventional polishing brush made of a polyamide resin and a polyester resin. In the method, there is a problem that the abrasive brush bristle material melts and adheres to the stainless steel plate due to frictional heat between the abrasive brush bristle material and the object to be polished, such as a stainless steel plate. Is required.
この要求に応えるブラシとしては、ポリアミド樹脂にアジン系化合物を含有させた組成物と研磨砥材粒子とからなる研磨ブラシ用毛材（例えば、特許文献１参照）、およびポリアミド樹脂とフッ素樹脂との組成物と研磨砥材粒子とからなる研磨ブラシ用毛材（例えば、特許文献２参照）がすでに知られており、これらの研磨ブラシ用毛材によれば、構成する合成樹脂にアジン系化合物あるいはフッ素樹脂を含有させた樹脂を使用しているため、ステンレス鋼板などの研磨時に溶着物が付着する不具合は解消するもの、研磨ブラシ毛材が溶融することによって、研磨ブラシの寿命が短くなることから耐久性の点で問題が残されていた。 As a brush that meets this requirement, a polishing brush bristle material (for example, see Patent Document 1) comprising a composition containing an azine compound in a polyamide resin and abrasive particles, and a polyamide resin and a fluororesin A polishing brush bristle material comprising a composition and abrasive particles (see, for example, Patent Document 2) is already known, and according to these abrasive brush bristle materials, an azine compound or Because a resin containing fluororesin is used, the problem of adhesion of weld deposits during polishing of stainless steel plates, etc. is eliminated, and the life of the polishing brush is shortened by melting the polishing brush bristle material. There was a problem in terms of durability.
また、高融点樹脂を用いた研磨ブラシ毛材（例えば、特許文献３参照）も提案されているが、この研磨ブラシ用毛材は、耐薬品性および耐熱性の性能は満足するものである反面、研磨時に研磨ブラシ毛材から砥材粒子が脱落し易く、研磨性能が持続できないという問題があり、砥材粒子と樹脂との接着を改善するために、シランカップリング処理を施すなどの手段が取られたが、その改良効果は十分なものであるとは言えず、さらなる改善が強く望まれていた。 Also, a polishing brush bristle material (for example, see Patent Document 3) using a high melting point resin has been proposed. However, this abrasive brush bristle material satisfies chemical resistance and heat resistance performance. There is a problem that abrasive particles easily fall off from the abrasive brush bristle material during polishing, and the polishing performance cannot be sustained. To improve the adhesion between the abrasive particles and the resin, means such as applying a silane coupling treatment are required. Although it was taken, the improvement effect was not sufficient, and further improvement was strongly desired.
本発明は、上述した従来技術における問題点の解決を課題として検討した結果、達成されたものである。すなわち、本発明の目的は、従来の研磨ブラシ用毛材に比べ耐熱性および研磨性に優れ、特にステンレス鋼板などの乾式研磨加工に好適な研磨ブラシ用毛材および研磨ブラシを提供することにある。 The present invention has been achieved as a result of examining the solution of the problems in the above-described prior art as an object. That is, an object of the present invention is to provide a polishing brush hair material and a polishing brush that are excellent in heat resistance and polishing properties compared to conventional polishing brush hair materials, and are particularly suitable for dry polishing processing of stainless steel plates and the like. .
上記目的を達成するために本発明によれば、研磨砥材粒子を含有するポリエーテルエーテルケトン樹脂組成物を構成素材とするモノフィラメントからなる研磨ブラシ用毛材であって、前記モノフィラメント中の下記式で示される空隙率が１５％以下であることを特徴とする研磨ブラシ用毛材が提供される。
空隙率（％）＝（Ａ−Ｂ／Ｃ）／Ａ×１００
Ａ；試料の体積（ｃｍ３）
Ｂ；試料の重さ（ｇ）
Ｃ；試料の比重（ｇ／ｃｍ３）
In order to achieve the above object, according to the present invention, there is provided a polishing brush hair material comprising a monofilament comprising a polyether ether ketone resin composition containing abrasive particles, wherein the following formula in the monofilament: A bristle material for an abrasive brush is provided, wherein the porosity shown by the above is 15% or less.
Porosity (%) = (A−B / C) / A × 100
A: Sample volume (cm 3 )
B: Weight of sample (g)
C: Specific gravity of the sample (g / cm 3 )
なお、本発明の研磨ブラシ用毛材においては、
前記モノフィラメントの直径が０．２〜３．０ｍｍの範囲にあること、および
前記研磨砥材粒子のＪＩＳＲ６００１に準拠した粒度が＃３６〜＃３０００の範囲にあり、かつ前記ポリエーテルエーテルケトン樹脂組成物における含有量が５〜４０重量％の範囲にあること
が、いずれも好ましい条件として挙げられ、この条件を満たすことによって、さらに優れた効果を取得することができる。
In the hair material for polishing brush of the present invention,
The diameter of the monofilament is in the range of 0.2 to 3.0 mm, and the particle size of the abrasive abrasive particle according to JIS R6001 is in the range of # 36 to # 3000, and the polyether ether ketone resin composition It is mentioned that the content in the range of 5 to 40% by weight is a preferable condition. By satisfying this condition, a further excellent effect can be obtained.
また、本発明の上記研磨ブラシ用毛材の製造方法は、研磨砥材粒子を含有するポリエーテルエーテルケトン樹脂組成物を、３７０〜４２０℃の温度で溶融混練して、口金孔から押出した後、紡出糸条をミスト冷却し、次いで２００℃〜３２０℃の雰囲気で延伸倍率２．０〜３．０倍に延伸して得られたモノフィラメントを、所望の長さに切断することを特徴とする。 Moreover, the manufacturing method of the said bristle material for abrasive brushes of this invention is after melt-kneading the polyetheretherketone resin composition containing abrasive abrasive particle | grains at the temperature of 370-420 degreeC, and extruding from a nozzle | cap | die hole. The monofilament obtained by mist-cooling the spun yarn and then drawing at a draw ratio of 2.0 to 3.0 times in an atmosphere of 200 ° C. to 320 ° C. is cut into a desired length. To do.
さらに、本発明の研磨ブラシは、前記研磨ブラシ用毛材を毛材の少なくとも一部に使用したものであり、特にこの研磨ブラシを金属鋼板の製造工程における金属鋼板表面の乾式研磨加工に使用した場合には、優れた効果を如何なく発揮することができる。 Furthermore, the polishing brush of the present invention uses the abrasive brush bristle material as at least a part of the bristle material, and in particular, this abrasive brush was used for dry polishing processing of the surface of the metal steel plate in the manufacturing process of the metal steel plate. In some cases, excellent effects can be exhibited.
本発明によれば、従来の研磨ブラシ用毛材に比べ、耐熱性および研磨性に優れた研磨ブラシ用毛材が得られ、この研磨ブラシ用毛材を研磨ブラシに使用した場合には、これらの効果を如何なく発揮し、特にステンレス鋼板などの乾式研磨加工に好適な研磨ブラシが得られる。 According to the present invention, it is possible to obtain a polishing brush bristle material that is superior in heat resistance and polishability compared to conventional bristle material for abrasive brushes. Thus, a polishing brush suitable for dry polishing such as a stainless steel plate can be obtained.
以下に、本発明の研磨ブラシ用毛材および研磨ブラシについて詳述する。 Below, the bristle material and polishing brush for abrasive brushes of this invention are explained in full detail.
本発明の研磨ブラシ用毛材は、研磨砥材粒子を含有するポリエーテルエーテルケトン樹脂組成物を構成素材とするモノフィラメントからなる研磨ブラシ用毛材であって、前記モノフィラメント中の上記式で示される空隙率が１５％以下であることを特徴とする。 The bristle material for abrasive brushes of the present invention is a bristle material for abrasive brushes comprising a monofilament comprising a polyether ether ketone resin composition containing abrasive abrasive particles, and is represented by the above formula in the monofilament. The porosity is 15% or less.
ここで、本発明の研磨ブラシ用毛材に使用されるポリエーテルエーテルケトン樹脂の適正粘度は、ＭＦＲ（３７９℃）が５〜３０ｇ／１０分の範囲のものが、研磨砥材粒子との混連性が良く、製糸性が良好となることから好ましい。溶融粘度ＭＦＲ（３７９℃）が５ｇ／１０分未満の場合は、砥材粒子との混連性が悪く、口金孔からの吐出状態が不安定な傾向となる。逆に、ＭＦＲ（３７９℃）が３０ｇ／１０分を越える場合は、口金から吐出状態で弛みを生じてモノフィラメントに直径斑ができやすくなるばかりか、延伸時に断糸が起こりやすい傾向となる。 Here, the proper viscosity of the polyetheretherketone resin used for the hair brush material of the present invention is such that the MFR (379 ° C.) is in the range of 5 to 30 g / 10 min. It is preferable because of good connectivity and good yarn production. When the melt viscosity MFR (379 ° C.) is less than 5 g / 10 minutes, the intermixability with the abrasive particles is poor, and the discharge state from the die hole tends to be unstable. On the contrary, when MFR (379 ° C.) exceeds 30 g / 10 min, not only the monofilament is loosened in the discharged state and the monofilament is likely to have a diameter spot, but also the yarn tends to break during stretching.
また、このモノフィラメント中の次式で示される空隙率は１５％以下、特に１０％以下であることが好ましい。空隙率が１５％を越える場合は、ポリエーテルエーテルケトン樹脂と研磨砥材粒子の間にできた空洞がポリエーテルエーテルケトン樹脂と研磨砥材粒子との接着を阻害し、研磨時に砥材粒子が脱落して研磨性能が維持できなくなるため好ましくない。
空隙率（％）＝（Ａ−Ｂ／Ｃ）／Ａ ×１００
Ａ；試料の体積（ｃｍ３）
Ｂ；試料の重さ（ｇ）
Ｃ；試料の比重（ｇ／ｃｍ３）
Moreover, it is preferable that the porosity shown by following Formula in this monofilament is 15% or less, especially 10% or less. When the porosity exceeds 15%, the void formed between the polyether ether ketone resin and the abrasive particles inhibits the adhesion between the polyether ether ketone resin and the abrasive particles, and the abrasive particles are not polished during polishing. It is not preferable because it will fall off and the polishing performance cannot be maintained.
Porosity (%) = (A−B / C) / A × 100
A: Sample volume (cm 3 )
B: Weight of sample (g)
C: Specific gravity of the sample (g / cm 3 )
本発明の研磨ブラシ用毛材に使用される研磨砥材粒子としては、酸化アルミナ、炭化ケイ素および人工ダイヤモンドなどが挙げられ、これらの粒度番手としては、研磨材粒度ＪＩＳ Ｒ６００１（１９７３）に準拠した粒度が＃３６〜＃３０００、特に＃６０〜＃１０００の範囲のものが好ましく使用される。 Examples of the abrasive particles used in the bristle material for an abrasive brush of the present invention include alumina oxide, silicon carbide, and artificial diamond. The particle size of these particles conforms to the abrasive particle size JIS R6001 (1973). Those having a particle size in the range of # 36 to # 3000, particularly # 60 to # 1000 are preferably used.
そして、上記の研磨砥材粒子の含有量は、上記の樹脂組成物中に５〜４０重量％の範囲にあることが必要であり、さらには１０〜３０重量％の範囲にあることがより好ましい。 And content of said abrasive grain needs to exist in the range of 5-40 weight% in said resin composition, Furthermore, it is more preferable that it exists in the range of 10-30 weight%. .
研磨砥材粒子の含有量が上記範囲を下回る場合は、研磨力に欠けた研磨ブラシ用毛材となりやすく、逆に、含有量が上記範囲を上回る場合は、モノフィラメントの強度が低下し、折損耐久性に欠けた研磨ブラシ用毛材となりやすい。 When the content of abrasive abrasive particles is below the above range, it tends to be a bristle material for polishing brushes lacking in polishing power, and conversely, when the content exceeds the above range, the strength of the monofilament is reduced and breakage durability It tends to be a bristle material for polishing brushes lacking in properties.
また、研磨ブラシ用毛材の直径は０．２〜３．０ｍｍの範囲であることが好ましく、研磨ブラシ用毛材の直径が０．２ｍｍ未満では、研磨性能を十分に満足することができず、３．０ｍｍを越えると、口金から吐出されたポリエーテルエーテルケトン樹脂と研磨砥材粒子の混合物の冷却が不安定となり延伸性に支障をきたす傾向となる。 Moreover, it is preferable that the diameter of the bristle material for polishing brushes is in the range of 0.2 to 3.0 mm, and if the diameter of the bristle material for polishing brush is less than 0.2 mm, the polishing performance cannot be sufficiently satisfied. If it exceeds 3.0 mm, the cooling of the mixture of the polyether ether ketone resin and abrasive particles discharged from the die becomes unstable, and the stretchability tends to be hindered.
次に、本発明のブラシ用毛材の構成素材であるモノフィラメントの製造方法を以下に説明する。 Next, the manufacturing method of the monofilament which is a constituent material of the bristle material for brushes of this invention is demonstrated below.
まず、好ましくは溶融粘度がＭＦＲ（３７５℃）５〜３０のポリエーテルエーテルケトン樹脂に所定量の研磨砥材粒子を含有させたポリエーテルエーテルケトン樹脂組成物を、２軸のエクストルダー型紡糸に供給し、３７０〜４２０℃の温度で溶融混練して、口金孔から押出した後、紡出糸条をミスト冷却し、次いで２００℃〜３２０℃の雰囲気で延伸倍率２．０〜３．０倍に延伸することによりモノフィラメントを得る。その後は、必要に応じて、２００℃〜３００℃の温度で弛緩状態または緊張状態で熱処理を行ってもよい。 First, a polyether ether ketone resin composition in which a predetermined amount of abrasive abrasive particles are contained in a polyether ether ketone resin having a melt viscosity of MFR (375 ° C.) of 5 to 30 is preferably used for biaxial extruder spinning. After feeding and melt-kneading at a temperature of 370 to 420 ° C. and extruding from a die hole, the spinning yarn is mist-cooled and then stretched at a draw ratio of 2.0 to 3.0 times in an atmosphere of 200 to 320 ° C. A monofilament is obtained by stretching the film. Thereafter, if necessary, heat treatment may be performed in a relaxed state or a tensioned state at a temperature of 200 ° C. to 300 ° C.
上記ミスト冷却とは、口金下以降の糸条にミストが触れるようにスプレーノズルによってミストの吹き出しを行う徐冷方法である。ミストの吹き出し量は、糸条が揺れない程度のミスト量の吹き出しとすることが好ましい。ミスト量が多く糸条が揺れると糸直径の斑に生ずる傾向となる。また、ミストの吹き出しは２個以上とするのが好ましい。 The mist cooling is a slow cooling method in which the mist is blown out by a spray nozzle so that the mist touches the yarn below the base. The mist blowing amount is preferably a mist blowing amount that does not cause the yarn to shake. When the amount of mist is large and the yarn is swayed, it tends to occur in the spot of the yarn diameter. Moreover, it is preferable that the number of mist balloons be two or more.
口金から吐出された糸条の冷却方法としては、水または温水などの液中で吐出された糸条を冷却する方法が一般であるが、ポリエーテルエーテルケトンを構成素材とするモノフィラメントに、通常の冷却方法を採用した場合には、糸条表面が急激に固化され、糸条中に真空ボイドが発生し易いため、ポリエーテルエーテルケトン樹脂と砥材粒子間に隙間が生じて接着性能が劣る傾向となり、延伸後のモノフィラメントから砥材粒子が脱落し易くなるため好ましくない。 As a method of cooling the yarn discharged from the base, a method of cooling the yarn discharged in a liquid such as water or warm water is generally used. When the cooling method is adopted, the yarn surface is solidified rapidly, and vacuum voids are likely to be generated in the yarn. Therefore, a gap is generated between the polyether ether ketone resin and the abrasive particles, and the adhesive performance tends to be inferior. This is not preferable because the abrasive particles easily fall off from the drawn monofilament.
そして、延伸条件の温度は２００〜３２０℃の範囲であることがポリエーテルエーテルケトンの配向に適しており、この範囲を外れた２００℃以下では延伸時に断糸が起こりやすくなり、逆に３２０℃以上では延伸張力が不足して適度な配向とならず、屈曲疲労性が劣る傾向となる。本発明においては、ミスト冷却による徐冷を採用することにより、空隙率が１５％以下のモノフィラメントを得ることが可能となる。 And it is suitable for the orientation of the polyether ether ketone that the temperature of the drawing conditions is in the range of 200 to 320 ° C. If the temperature is out of this range, 200 ° C or less, yarn breakage tends to occur at the time of drawing. Above, the stretching tension is insufficient, the orientation is not suitable, and the bending fatigue tends to be inferior. In the present invention, it is possible to obtain a monofilament having a porosity of 15% or less by adopting slow cooling by mist cooling.
そして、上記の製造方法で得られたモノフィラメントを、所望の長さにカットすることにより、本発明の研磨ブラシ用毛材が得られるのである。 And the hair material for abrasive brushes of this invention is obtained by cutting the monofilament obtained by said manufacturing method into desired length.
ここで、研磨ブラシ用毛材を構成するモノフィラメントの断面形状は、円形以外にも楕円形、三角形、矩形およびその他の異形にすることができ、特に限定はされない。 Here, the cross-sectional shape of the monofilament constituting the bristle material for the polishing brush can be an ellipse, a triangle, a rectangle and other irregular shapes in addition to the circle, and is not particularly limited.
一方、本発明の研磨ブラシは、上記研磨ブラシ用毛材を使用し、公知の製造方法で得られたものであり、その形状としては、例えば、チャンネルブラシやディスクブラシロールブラシなど様々な研磨ブラシが挙げられる。 On the other hand, the polishing brush of the present invention is obtained by a known manufacturing method using the above-mentioned polishing brush bristle material, and as its shape, for example, various polishing brushes such as a channel brush and a disc brush roll brush Is mentioned.
以下に、実施例を挙げ本発明の構成および効果をさらに説明する。 Hereinafter, the configuration and effects of the present invention will be further described with reference to examples.
なお、以下の実施例における砥粒脱落率および屈曲疲労性の評価は下記に記載の方法で行った。 In addition, evaluation of the abrasive grain drop-off rate and flexural fatigue in the following examples was performed by the methods described below.
［手揉み砥粒脱落率］
下記モノフィラメントを５０ｍｍにカットし、毛材２０本の重量を測定（Ａ）する。その後束ね、両手の人差し指と親指でつまんで往復５０回揉み動作を行った後、毛材の重量を測定（Ｂ）する。この評価を５回繰り返して下式で砥粒脱落率を算出し、５回の平均値で表す。
手揉み砥粒脱落率（％）＝（Ａ−Ｂ）／Ａ×１００
[Hand greasing rate of abrasive grains]
The following monofilament is cut into 50 mm, and the weight of 20 hair materials is measured (A). Then, the bundle is bundled and pinched with the index fingers and thumbs of both hands, and after 50 times of reciprocation, the weight of the hair is measured (B). This evaluation is repeated 5 times, and the abrasive drop-off rate is calculated by the following formula, and is expressed as an average value of 5 times.
Manual greasing rate (%) = (A−B) / A × 100
［耐熱折損耐久性］
各モノフィラメントを熱風乾燥機に入れて２００℃の温度で４８時間処理した後、下記の自社強制テスト方法により評価した。
[Heat-resistant fracture durability]
Each monofilament was put into a hot air dryer and treated at a temperature of 200 ° C. for 48 hours, and then evaluated by the following in-house forced test method.
すなわち、ＪＩＳ Ｐ８１１５記載のＭＩＴ試験機を用い、荷重１５．７Ｎ（１．５ｋｇｆ）、毎分１７５±１０回の速度で、モノフィラメントを２７０°折り曲げ、モノフィラメントが切断するまでの往復折り曲げ回数、つまり屈曲疲労性を５回測定し、その平均値を求めた。そして、未処理のモノフィラメントの試験片について、上記と同様にして各耐屈曲疲労性を測定し、折損耐久率を次式によって算出した。
折損耐久率（％）＝（Ａ／Ｂ）×１００
That is, using a MIT test machine described in JIS P8115, the monofilament was bent at 270 ° at a load of 15.7 N (1.5 kgf) and a speed of 175 ± 10 times per minute, that is, the number of reciprocal bending until the monofilament was cut, that is, bending The fatigue was measured 5 times, and the average value was obtained. And about the untreated monofilament test piece, each bending fatigue resistance was measured similarly to the above, and the fracture durability was calculated by the following equation.
Breakage durability (%) = (A / B) × 100
［研磨量］
下記モノフィラメントを、内径４５ｍｍ、外径７０ｍｍ、毛丈３０ｍｍに植毛したカップ状ブラシを、ハンドグラインダーに取り付け、５０Ｎの圧力で、１２０００ｒｐｍで回転させながら、真鍮金属板に接触させて、３０分間研磨作業を行い削り取られた真鍮金属の重量を測定した。
[Polishing amount]
A cup-shaped brush in which the following monofilaments are planted with an inner diameter of 45 mm, an outer diameter of 70 mm, and a hair length of 30 mm is attached to a hand grinder, and is rotated at 12000 rpm at a pressure of 50 N. The weight of the brass metal scraped off was measured.
［実施例１〜３］
溶融粘度（ＭＦＲ ３７９℃）が１６ｇ／１０分のポリエーテルエーテルケトン樹脂「ダイセルエボニック（株）製ＶＥＳＴＡＫＥＥＰ４０００Ｇ」に対し、シランカップリング剤「東レ・ダウコーニング・シリコーン（株）製ＳＨ６０２０」を０．２重量％被覆処理した粒度番手＃１００の炭化ケイ素砥材粒子（昭和電工社製）を２３重量％添加した組成物を、２軸エクストルダー型紡糸機に供し、３８０℃の温度で溶融混練した後、押し出された糸条をミスト冷却により冷却固化した後、引き続き２４０℃の熱風雰囲気中で、表１に示した延伸倍率で延伸することにより、それぞれ直径１．０ｍｍの円形断面モノフィラメントを得た。そして、得られたモノフィラメントを使用して砥粒脱落率、熱処理後の折損耐久性の評価を行った。また、研磨量は上記モノフィラメントを植毛してカップ状ブラシを加工し、研磨量の評価を行った。それらの結果を表１に併せて示す。
[Examples 1 to 3]
A silane coupling agent “SH6020 manufactured by Toray Dow Corning Silicone Co., Ltd.” was set to 0. 0 with respect to a polyether ether ketone resin “VESTAKEEEP4000G manufactured by Daicel Evonik Co., Ltd.” having a melt viscosity (MFR 379 ° C.) of 16 g / 10 min. A composition to which 23% by weight of silicon carbide abrasive particles having a particle size of # 100 coated with 2% by weight (made by Showa Denko) was added was subjected to a twin-screw extruder spinning machine and melt-kneaded at a temperature of 380 ° C. Thereafter, the extruded yarn was cooled and solidified by mist cooling, and subsequently stretched at a draw ratio shown in Table 1 in a hot air atmosphere at 240 ° C. to obtain circular cross-section monofilaments each having a diameter of 1.0 mm. . The obtained monofilament was used to evaluate the abrasive grain drop rate and the fracture durability after heat treatment. Further, the polishing amount was evaluated by polishing the above-mentioned monofilament and processing a cup-shaped brush. The results are also shown in Table 1.
［実施例４］
実施例１において、得られるモノフィラメントの直径を２．０ｍｍに変更した以外は、同様にして同じモノフィラメントを得た。
[Example 4]
In Example 1, the same monofilament was obtained in the same manner except that the diameter of the obtained monofilament was changed to 2.0 mm.
そして、得られたモノフィラメントを使用して砥粒脱落率、熱処理後の折損耐久性の評価を行った。また、研磨量は上記モノフィラメントを植毛してカップ状ブラシを加工し、研磨量の評価を行った。それらの結果を表１に併せて示す。 The obtained monofilament was used to evaluate the abrasive grain drop rate and the fracture durability after heat treatment. Further, the polishing amount was evaluated by polishing the above-mentioned monofilament and processing a cup-shaped brush. The results are also shown in Table 1.
［実施例５］
実施例１において、研磨砥材粒子を＃８００の炭化ケイ素砥材粒子（昭和電工社製）に、得られるモノフィラメントの直径を直径０．４ｍｍに、それぞれ変更した以外は、同様にして同じモノフィラメントを得た。
[Example 5]
In Example 1, the same monofilament was similarly used except that the abrasive abrasive particles were changed to # 800 silicon carbide abrasive particles (made by Showa Denko KK), and the diameter of the obtained monofilament was changed to 0.4 mm in diameter. Obtained.
そして、得られたモノフィラメントを使用して砥粒脱落率、熱処理後の折損耐久性の評価を行った。また、研磨量は上記モノフィラメントを植毛してカップ状ブラシを加工し、研磨量の評価を行った。それらの結果を表１に併せて示す。
［実施例６］
実施例５において、＃８００の炭化ケイ素砥材粒子（昭和電工社製）の配合量を３５重量％に変更した以外は、同様にして同じモノフィラメントを得た。
The obtained monofilament was used to evaluate the abrasive grain drop rate and the fracture durability after heat treatment. Further, the polishing amount was evaluated by polishing the above-mentioned monofilament and processing a cup-shaped brush. The results are also shown in Table 1.
[Example 6]
In Example 5, the same monofilament was obtained in the same manner except that the amount of # 800 silicon carbide abrasive particles (Showa Denko) was changed to 35% by weight.
そして、得られたモノフィラメントを使用して砥粒脱落率、熱処理後の折損耐久性の評価を行った。また、研磨量は上記モノフィラメントを植毛してカップ状ブラシを加工し、研磨量の評価を行った。それらの結果を表１に併せて示す。 The obtained monofilament was used to evaluate the abrasive grain drop rate and the fracture durability after heat treatment. Further, the polishing amount was evaluated by polishing the above-mentioned monofilament and processing a cup-shaped brush. The results are also shown in Table 1.
［比較例１］
実施例１において、ミスト冷却を２０℃の水中での冷却方法に変更した以外は、同様にして同じモノフィラメントを得た。
[Comparative Example 1]
In Example 1, the same monofilament was obtained in the same manner except that the mist cooling was changed to a cooling method in water at 20 ° C.
そして、得られたモノフィラメントを使用して砥粒脱落率、熱処理後の折損耐久性の評価を行った。また、研磨量は上記モノフィラメントを植毛してカップ状ブラシを加工し、研磨量の評価を行った。それらの結果を表１に併せて示す。 The obtained monofilament was used to evaluate the abrasive grain drop rate and the fracture durability after heat treatment. Further, the polishing amount was evaluated by polishing the above-mentioned monofilament and processing a cup-shaped brush. The results are also shown in Table 1.
［比較例２］
比較例１において、研磨砥材粒子を＃８００の炭化ケイ素砥材粒子（昭和電工社製）に変更した以外は、同様にして同じモノフィラメントを得た。
[Comparative Example 2]
In Comparative Example 1, the same monofilament was obtained in the same manner except that the abrasive abrasive particles were changed to # 800 silicon carbide abrasive particles (Showa Denko).
そして、得られたモノフィラメントを使用して砥粒脱落率、熱処理後の折損耐久性の評価を行った。また、研磨量は上記モノフィラメントを植毛してカップ状ブラシを加工し、研磨量の評価を行った。それらの結果を表１に併せて示す。 The obtained monofilament was used to evaluate the abrasive grain drop rate and the fracture durability after heat treatment. Further, the polishing amount was evaluated by polishing the above-mentioned monofilament and processing a cup-shaped brush. The results are also shown in Table 1.
［比較例３］
実施例１において、延伸倍率を４．０倍に変更した以外は、同様にして同じモノフィラメントを得た。
[Comparative Example 3]
The same monofilament was obtained in the same manner as in Example 1 except that the draw ratio was changed to 4.0 times.
そして、得られたモノフィラメントを使用して砥粒脱落率、熱処理後の折損耐久性の評価を行った。また、研磨量は上記モノフィラメントを植毛してカップ状ブラシを加工し、研磨量の評価を行った。それらの結果を表１に併せて示す。 The obtained monofilament was used to evaluate the abrasive grain drop rate and the fracture durability after heat treatment. Further, the polishing amount was evaluated by polishing the above-mentioned monofilament and processing a cup-shaped brush. The results are also shown in Table 1.
［比較例４］
相対粘度が３．８のＮ６１０樹脂（東レ（株）製Ｍ２０４１）７７重量％と、シランカップリング剤（東レ・ダウコーニング・シリコーン（株）製ＳＨ６０２０）を０．２重量％被覆処理した粒度番手＃１００の炭化ケイ素砥材粒子（昭和電工社製）２３重量％との混合物をエクストルダー型紡糸機に供給し、２６０℃の温度で溶融混練した後、口金孔から押出した。次に押出された糸条を２０℃の冷却浴で冷却固化した後、引き続き１８０℃の熱風雰囲気中で３．２倍に延伸することにより、直径１．０ｍｍのモノフィラメントを得た。
[Comparative Example 4]
Particle size with a coating weight of 77% by weight of N610 resin (M2041 manufactured by Toray Industries, Inc.) having a relative viscosity of 3.8 and 0.2% by weight of silane coupling agent (SH6020 manufactured by Toray Dow Corning Silicone Co., Ltd.) A mixture of # 100 silicon carbide abrasive particles (made by Showa Denko Co., Ltd.) of 23% by weight was supplied to an extruder-type spinning machine, melt-kneaded at a temperature of 260 ° C., and then extruded from a die hole. Next, the extruded yarn was cooled and solidified in a cooling bath at 20 ° C., and then stretched 3.2 times in a hot air atmosphere at 180 ° C. to obtain a monofilament having a diameter of 1.0 mm.
そして、得られたモノフィラメントをカットし、これを研磨用ブラシ毛材としてカップ状ブラシの作製に使用した。モノフィラメントおよびカップ状ブラシの各評価結果を表１に併せて示す。 And the obtained monofilament was cut, and this was used for preparation of a cup-shaped brush as a brush hair material for polishing. Each evaluation result of the monofilament and the cup-shaped brush is also shown in Table 1.
表１の結果から明らかなように、本発明の条件を満たす研磨ブラシ用毛材（実施例１〜６）は、研磨ブラシ用毛材を構成するモノフィラメント中の空隙率を４．５〜１３．５％の範囲にしたものであり、砥材粒子の脱落を抑えて耐熱折損耐久性が優れ、それに加え高い研磨性を有したものであった。 As apparent from the results in Table 1, the polishing brush hair material (Examples 1 to 6) satisfying the conditions of the present invention has a porosity of 4.5 to 13 in the monofilament constituting the polishing brush hair material. It was in the range of 5%, and was excellent in heat-resistant breakage durability by suppressing the falling off of abrasive particles, and also had high abrasiveness.
これに対し、本発明の条件を満たさない比較例１および比較例２の口金から押し出し水中冷却して空隙率を１９％にしたもの、比較例３の延伸倍率を４．０倍と大きくして空隙率を１７％としたものは、いずれも砥材粒子の脱落が多いため、研磨量が少なく研削力不足であった。また、比較例４のポリアミド６１０樹脂を使用したものは、空隙率は１４．５％であるが、３０分間の研磨作業中に、摩擦により研磨ブラシ用毛材の先端が溶融して砥材粒子がポリアミド６１０樹脂に覆われたため研削力不足であった。 On the other hand, it was extruded from the caps of Comparative Examples 1 and 2 that did not satisfy the conditions of the present invention and cooled in water to make the porosity 19%, and the stretching ratio of Comparative Example 3 was increased to 4.0 times. In all cases where the porosity was 17%, the abrasive particles were often dropped, so the amount of polishing was small and the grinding force was insufficient. Further, the one using the polyamide 610 resin of Comparative Example 4 has a porosity of 14.5%, but during the 30-minute polishing operation, the tip of the abrasive material for the polishing brush was melted by friction and abrasive particles Was covered with polyamide 610 resin, so that the grinding force was insufficient.
以上説明したように、本発明の研磨ブラシ用毛材は、従来の研磨ブラシに比べ耐熱性および研磨性に優れ、この研磨ブラシ用毛材を研磨ブラシに使用した場合には、これらの効果を如何なく発揮し、特にステンレス鋼板などの酸液洗浄研磨加工に好適な研磨ブラシが得られる。したがって、本発明によれば、研磨時に冷却液および洗浄液を削減して使用することや、冷却液および洗浄液使用しないで乾式研磨加工することが可能となり、研磨業界へ貢献するところが大きい。 As described above, the bristle material for abrasive brushes of the present invention is superior in heat resistance and abrasiveness compared to conventional abrasive brushes, and when these abrasive brush bristle materials are used for abrasive brushes, these effects are obtained. A polishing brush that can be used without any problem and that is particularly suitable for an acid solution cleaning polishing process such as a stainless steel plate is obtained. Therefore, according to the present invention, it is possible to reduce the cooling liquid and the cleaning liquid during polishing, and to perform dry polishing without using the cooling liquid and the cleaning liquid, which greatly contributes to the polishing industry.
Claims (5)
空隙率（％）＝（Ａ−Ｂ／Ｃ）／Ａ×１００
Ａ；試料の体積（ｃｍ３）
Ｂ；試料の重さ（ｇ）
Ｃ；試料の比重（ｇ／ｃｍ３） A bristle material for a polishing brush comprising a monofilament comprising a polyether ether ketone resin composition containing abrasive particles as a constituent material, wherein the porosity represented by the following formula in the monofilament is 15% or less. A feature of hair material for polishing brushes.
Porosity (%) = (A−B / C) / A × 100
A: Sample volume (cm 3 )
B: Weight of sample (g)
C: Specific gravity of the sample (g / cm 3 )
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| JPH01250409A (en) * | 1988-03-29 | 1989-10-05 | Unitika Ltd | Polyetherketone monofilament and production thereof |
| JPH0236076A (en) * | 1988-07-22 | 1990-02-06 | Unitika Ltd | Monofilament for polishing brush |
| JPH04300166A (en) * | 1991-01-17 | 1992-10-23 | Asahi Chem Ind Co Ltd | Grinding monofilment and manufacture thereof |
| JP2001279522A (en) * | 2000-03-29 | 2001-10-10 | Toray Monofilament Co Ltd | High melting point monofilament and method for producing the same |
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| CN106463256A (en) * | 2014-04-15 | 2017-02-22 | 弗拉里斯电力有限公司 | Method for manufacturing separated type power electromagnetic induction device |
| JP2017516301A (en) * | 2014-04-15 | 2017-06-15 | フェラリスパワー カンパニー リミテッド | Method for manufacturing a separable electromagnetic induction device |
| US10453604B2 (en) | 2014-04-15 | 2019-10-22 | Ferrarispower Co., Ltd | Current transformer device |
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