JPH03185089A - Heat-resistant molding for abrasion - Google Patents
Heat-resistant molding for abrasionInfo
- Publication number
- JPH03185089A JPH03185089A JP32376689A JP32376689A JPH03185089A JP H03185089 A JPH03185089 A JP H03185089A JP 32376689 A JP32376689 A JP 32376689A JP 32376689 A JP32376689 A JP 32376689A JP H03185089 A JPH03185089 A JP H03185089A
- Authority
- JP
- Japan
- Prior art keywords
- thermoplastic resin
- monofilament
- heat
- molding
- polishing
- 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
- 238000000465 moulding Methods 0.000 title claims abstract description 10
- 238000005299 abrasion Methods 0.000 title abstract 3
- 239000002245 particle Substances 0.000 claims abstract description 20
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 20
- 238000002844 melting Methods 0.000 claims abstract description 14
- 230000008018 melting Effects 0.000 claims abstract description 14
- -1 ether ketone Chemical class 0.000 claims abstract description 7
- 230000009477 glass transition Effects 0.000 claims abstract description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000004962 Polyamide-imide Substances 0.000 claims abstract description 3
- 239000004695 Polyether sulfone Substances 0.000 claims abstract description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 229920002312 polyamide-imide Polymers 0.000 claims abstract description 3
- 229920006393 polyether sulfone Polymers 0.000 claims abstract description 3
- 229920000069 polyphenylene sulfide Polymers 0.000 claims abstract description 3
- 229920000412 polyarylene Polymers 0.000 claims abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- 239000000126 substance Substances 0.000 abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001570 bauxite Inorganic materials 0.000 abstract description 2
- 229910003460 diamond Inorganic materials 0.000 abstract description 2
- 239000010432 diamond Substances 0.000 abstract description 2
- 229910001651 emery Inorganic materials 0.000 abstract description 2
- 239000002223 garnet Substances 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- 239000000377 silicon dioxide Substances 0.000 abstract description 2
- 239000011435 rock Substances 0.000 abstract 1
- 238000005498 polishing Methods 0.000 description 25
- 239000003082 abrasive agent Substances 0.000 description 7
- 229920001707 polybutylene terephthalate Polymers 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 239000000155 melt Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 229920001955 polyphenylene ether Polymers 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- 229910010271 silicon carbide Inorganic materials 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 229920002292 Nylon 6 Polymers 0.000 description 2
- 239000004697 Polyetherimide Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000012760 heat stabilizer Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001601 polyetherimide Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229920013683 Celanese Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000004963 Torlon Substances 0.000 description 1
- 229920003997 Torlon® Polymers 0.000 description 1
- 229920004738 ULTEM® Polymers 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 229920006125 amorphous polymer Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920006260 polyaryletherketone Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Artificial Filaments (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野〉
本発明は耐熱性、研摩性に優れ、かつ溶融成形性に優れ
た研摩用成形物に関する。さらに詳しくは、耐水性、耐
薬品性、靭性等にも優れているため、工業用研摩用途に
おいて優れた効果を発揮するモノフィラメント又はテー
プ状の耐熱性に優れた研摩用成形物に関するものである
。Detailed Description of the Invention (Industrial Application Field) The present invention relates to an abrasive molded article having excellent heat resistance, abrasiveness, and melt moldability. The present invention relates to a monofilament or tape-shaped abrasive molded article with excellent heat resistance, which exhibits excellent effects in industrial abrasive applications.
（従来技術）
従来より工業用ブラシ等の分野においては、砥剤粒子を
含有せしめた合成樹脂からなるモノフィラメントを用い
ることは良く知られており、その際、合成樹脂としては
、強靭性及び紡糸性に優れたナイロン−６、ナイロン−
６６等のポリアミドが主に用いられていた。しかし、か
かるモノフィラメントを用いて金属表面等を研摩する場
合、発熱を起こしてポリアミドが軟化し、研摩性能が低
下したりあるいは溶融して金属表面に融着する等のトラ
ブルが発生した。その為、かかる場合には研摩面に水又
は酸性液を注入しながら作業を行なう方法が提案されて
いる。しかし、ポリアミドは湿潤状態又は酸性溶液中で
は膨潤乃至は軟化するため、研摩効果が低下したりある
いは耐久性が非常に短くなるといった別の問題が発生し
た。これを解決する方法として、ポリブチレンテレフタ
レート（以下ＰＢＴと称する〉を使用する方法が提案さ
れている（特開昭５９−１４４７１号公報、特開昭６０
−２５２７１５号公報）。しがしながら、この技術も、
ＰＢＴの融点が２１６℃とナイロン６並であるため、水
等を併用しなければＰＢＴの軟化融着の問題が発生し、
また、水等を併用する場合にはＰＢＴの膨潤といった問
題は無いもののＰＢＴの加水分解発生によるためか、長
期使用において脆くなりブラシの根本で折れるといった
問題点が発生した。(Prior art) In the field of industrial brushes, etc., it has been well known to use monofilaments made of synthetic resin containing abrasive particles. Nylon 6, nylon with excellent
Polyamides such as 66 were mainly used. However, when such a monofilament is used to polish a metal surface, problems occur such as generation of heat and softening of the polyamide, resulting in decreased polishing performance or melting and adhesion to the metal surface. Therefore, in such cases, a method has been proposed in which the work is carried out while injecting water or acidic liquid into the polished surface. However, polyamide swells or softens in a wet state or in an acidic solution, resulting in other problems such as reduced polishing effectiveness or very short durability. As a method to solve this problem, a method using polybutylene terephthalate (hereinafter referred to as PBT) has been proposed (Japanese Patent Laid-Open No. 59-14471, Japanese Patent Laid-Open No. 60-60
-252715). However, this technology also
Since the melting point of PBT is 216°C, which is similar to that of nylon 6, if water etc. are not used together, the problem of PBT softening and fusion will occur.
In addition, when water or the like is used in combination, there is no problem of swelling of PBT, but there is a problem that the brush becomes brittle and breaks at the base of the brush after long-term use, probably due to hydrolysis of PBT.
（発明が解決しようとする問題点〉
本発明は、上記従来技術の有する問題点を解消するため
になされたもので、その目的は、水、酸性溶液等の洗浄
液に対する吸水、膨潤による力学的特性の変化が小さく
、化学的に分解もしくは溶解することもなく、しがち洗
浄液を併用しない場合にあっても研摩表面に融着ポリマ
ーが付着することもなくかつ研摩性能の低下もない、研
摩用成形物、特にモノフィラメント又はテープ状の成形
物を提供することにある。(Problems to be Solved by the Invention) The present invention has been made to solve the above-mentioned problems of the prior art. Polishing molding that has small changes in color, does not chemically decompose or dissolve, does not adhere to fused polymers on the polishing surface, and does not deteriorate polishing performance even when not used in conjunction with a cleaning solution. The object of the present invention is to provide a molded article, in particular a monofilament or tape-shaped article.
（問題を解決するための手段）
本発明者らは、上記目的を達成するため鋭意検討した結
果、特定の熱可塑性樹脂に砥剤粒子を混合し、これを溶
融成形してなる成形物は上記問題点をすべて解決するの
みでなく、驚くべきことに極めて耐久性の向上した研摩
特性をも有することを見出し本発明に到達した。(Means for Solving the Problem) As a result of intensive studies to achieve the above object, the present inventors have found that a molded product obtained by mixing abrasive particles into a specific thermoplastic resin and melt-molding the mixture is as described above. The present invention has been achieved by discovering that not only does it solve all of the problems, but surprisingly it also has polishing properties with extremely improved durability.
すなわち本発明は、融点が２８０℃以上又はガラス転移
点が２００℃以上である熱可塑性樹脂５０〜９５重１部
と、砥剤粒子５〜５０重量部とを混合し、これを溶融成
形してなる耐熱性を有する研摩用成形物に係るものであ
る。That is, in the present invention, 50 to 95 parts by weight of a thermoplastic resin having a melting point of 280°C or higher or a glass transition point of 200°C or higher and 5 to 50 parts by weight of abrasive particles are mixed, and this is melt-molded. This relates to a molded article for polishing having heat resistance.
本発明で用いる熱可塑性樹脂は、吸湿性が少なく耐薬品
性に優れているため、研摩用成形物としての耐久性が極
めて向上するし、かつ金属との摩擦抵抗が小さいため、
研摩時の発熱が少なく樹脂自体の耐熱性と相俟って融着
現象が極めて減少するといった効果をも有する。The thermoplastic resin used in the present invention has low hygroscopicity and excellent chemical resistance, so it has extremely improved durability as an abrasive molded product, and has low frictional resistance with metal.
It also produces less heat during polishing, and combined with the heat resistance of the resin itself, it has the effect of greatly reducing fusion phenomena.
かかる熱可塑性樹脂のうち結晶性で２８０℃以上の融点
を有する樹脂としては、例えば、ポリフェニレンサルフ
ァイド（融点、Ｔｍ＝ ２８７℃）；ホリフェニレンエ
ーテルエーテルケトン（３４３℃）。Among such thermoplastic resins, examples of resins that are crystalline and have a melting point of 280°C or higher include polyphenylene sulfide (melting point, Tm = 287°C); polyphenylene ether ether ketone (343°C).
ポリフェニレンエーテルエーテルケトンケトン（３６５
℃）、ボリフェニレンエーテルケトンゲトン＜３８５℃
）、ポリフェニレンエーテルケトン（３５９℃）等のポ
リアリールエーテルケトン類；さらには住友化学社製の
エコノールＥ２０００ ＜４１２℃）、ダートコ社製
のザイダー（４２１℃〉、セラニーズ社製のベクトラ（
３０２℃）等のボリアリレート類をあげることができる
。Polyphenylene ether ether ketone ketone (365
°C), polyphenylene ether ketone getone <385 °C
), polyaryletherketones such as polyphenylene ether ketone (359°C); furthermore, Econol E2000 (manufactured by Sumitomo Chemical <412°C), Xider (421°C>) manufactured by Dartco, Vectra (manufactured by Celanese)
Examples include polyarylates such as 302°C).
一方、上記熱可塑性樹脂のうち非品性でガラス転移点温
度が２００℃以上の樹脂としては、ジェネラルエレクト
リック社製のウルテム（ポリエーテルイミド、ガラス転
移点Ｔｇ＝２１７℃〉、インターナショナル・ケミカル
・インスディテユト社製のポリエーテルスルフォン３６
００Ｇもしくは４１００ＧくいずれもＴｇ＝ ２２５℃
）、アモコ社製のトーロン４２６３Ｌ （ポリアミド
イミド、 Ｔｇ＝２９０℃〉等をあげることができる。On the other hand, among the above-mentioned thermoplastic resins, non-grade resins with a glass transition temperature of 200°C or higher include General Electric's Ultem (polyetherimide, glass transition temperature Tg = 217°C), International Chemical Ins. Polyether sulfone 36 manufactured by Diteyuto
Tg = 225℃ for both 00G and 4100G
), Torlon 4263L (polyamideimide, Tg=290°C) manufactured by Amoco, etc.
本発明で用いる砥剤粒子としては、コークス粉。As the abrasive particles used in the present invention, coke powder is used.
ボーキサイト、アルミナ粉などのアルミナ系研摩剤、白
けい石、錫粉などの炭化けい素系研摩剤、ダイヤモンド
、エメリー、ざくろ石などの天然物系研摩剤、炭化物系
研摩剤、ジルコニア系研摩剤およびガラス系研摩剤など
があげられ、これらは二種以上併用することができる。Alumina-based abrasives such as bauxite and alumina powder, silicon carbide-based abrasives such as white silica and tin powder, natural product-based abrasives such as diamond, emery, and garnet, carbide-based abrasives, zirconia-based abrasives, and Examples include glass-based abrasives, and two or more of these can be used in combination.
これら砥剤粒子の粒子径はＪＩＳ Ｒ６００１（１９５
６＋で規定された粒度が＃６０〜１５００、特に＃８０
〜８００の範囲が適当であり、粒子径が＃６０よりも大
きいと溶融成形性が低下するし、得られる成形物の靭性
も低下する傾向がある。一方＃１５００よりも小さくな
ると、研摩性能が低下する傾向がある。The particle diameter of these abrasive particles is JIS R6001 (195
Particle size defined by 6+ is #60 to 1500, especially #80
A range of 800 to 800 is suitable; if the particle size is larger than #60, melt moldability tends to decrease and the toughness of the resulting molded product also tends to decrease. On the other hand, if it is smaller than #1500, polishing performance tends to decrease.
かかる砥剤粒子は、前述の熱可塑性樹脂との接着性を高
めるため前処理を施したものであっても良い。前処理剤
としては、エポキシ系カップリング剤、シラン系カップ
リング剤、チタン系カップリング剤等通常接着改良剤と
して採用されているものの他に、砥剤粒子との接着性が
良い樹脂をあげることができる。但し、これらの前処理
剤は、後述するように本発明の溶融成形温度は３１０〜
４６０℃と極めて高温度であるため、この温度で安定な
ものでなければならず、しかも、通常使用されている酸
化防止剤や熱安定剤を併用できない場合が多い。したが
って、このような場合には、用いる熱可塑性樹脂と同一
で溶融粘度の低いものく低分子量〉を用い、マスターチ
ップを作成する方法が好ましい。Such abrasive particles may be pretreated to enhance adhesion to the above-mentioned thermoplastic resin. As pretreatment agents, in addition to those commonly used as adhesion improvers such as epoxy coupling agents, silane coupling agents, and titanium coupling agents, resins that have good adhesion to abrasive particles may be used. I can do it. However, as described later, the melt molding temperature of these pretreatment agents in the present invention is 310 to 310.
Since the temperature is extremely high at 460°C, it must be stable at this temperature, and in many cases it is not possible to use commonly used antioxidants and heat stabilizers. Therefore, in such a case, it is preferable to create a master chip using the same thermoplastic resin as the thermoplastic resin used, which has a low melt viscosity and a low molecular weight.
本発明において砥剤粒子の添加量は、５〜５０重量％、
特に１０〜４０重量％が適当であり、これ未満の場合に
は所要の研摩性能が得られないし、この範囲をこえる場
合には得られる成形物の強靭性が低下するし溶融成形性
も低下するため好ましくない。In the present invention, the amount of abrasive particles added is 5 to 50% by weight,
In particular, 10 to 40% by weight is suitable; if it is less than this, the required polishing performance cannot be obtained, and if it exceeds this range, the toughness of the obtained molded product will decrease and the melt moldability will also decrease. Therefore, it is undesirable.
上述した融点が２８０℃以上又はガラス転移点が２００
℃以上の熱可塑性樹脂と砥剤粒子とを配合する方法とし
ては特に限定がなく、たとえば、両者をトライブレンド
した後押出機に供給して溶融成形してもよいし、また、
−度砥剤粒子の含有量の多いマスターベレットを作成し
、これを熱可塑性樹脂と混合して溶融成形しても良い。The melting point mentioned above is 280°C or higher or the glass transition point is 200°C.
There is no particular limitation on the method of blending the thermoplastic resin and the abrasive particles at a temperature of 0.degree.
- A master pellet with a high content of abrasive particles may be prepared, mixed with a thermoplastic resin, and melt-molded.
本発明の成形物は、通常の溶融成形性に準じて極めて良
好な成形性のもとに行なうことができるが、成形物の形
態はモノフィラメント状またはテープ状のものが、研摩
時の使用特性より特に好ましい。The molded product of the present invention can be made with extremely good moldability similar to ordinary melt moldability, but the shape of the molded product is preferably monofilament or tape due to the characteristics of use during polishing. Particularly preferred.
なお、本発明においては、熱可塑性樹脂として結晶性ポ
リマーを用いる場合、溶融吐出後例えば水浴中を通して
未延伸成形物となし、次いで所望の倍率で延伸したｆ＆
熱処理して十分結晶化させることにより、その機械的特
性を向上せしめるのが好ましい。これらの工程は、溶融
吐出工程から熱処理工程まで一貫して行なっても良く、
また各工程を別々に行なっても良い。特に、結晶化速度
の遅い熱可塑性樹脂を用いる場合には、−貫して行なう
方法では十分熱処理することができないので、別工程で
行なうことが好ましい。また、成形物の形態によっては
、例えば繊径の大きいモノフィラメントや膜厚の大なる
テープ状のものでは別工程とするのが望ましい場合もあ
る。このようにして十分結晶化させた本発明の成形物は
、摩擦係数がより低減し、耐薬品性、耐熱性、及び耐水
性も極めて向上するため、研摩材用としては極めて優れ
たものとなる。In the present invention, when a crystalline polymer is used as the thermoplastic resin, after melting and discharging, it is passed through a water bath to form an unstretched molded product, and then stretched at a desired magnification.
It is preferable to improve the mechanical properties by sufficiently crystallizing the material by heat treatment. These steps may be performed consistently from the melting and discharging step to the heat treatment step,
Further, each step may be performed separately. In particular, when a thermoplastic resin having a slow crystallization rate is used, it is preferable to carry out the heat treatment in a separate step, since sufficient heat treatment cannot be achieved by the step-through method. Furthermore, depending on the form of the molded product, for example monofilament with a large fiber diameter or tape-like product with a large thickness, it may be desirable to perform a separate process. The molded product of the present invention that has been sufficiently crystallized in this way has a further reduced coefficient of friction and extremely improved chemical resistance, heat resistance, and water resistance, making it extremely excellent for use as an abrasive. .
一方、前記熱可塑性樹脂が非晶性ポリマーの場合には、
未延伸状態のままでも、さらに延伸処理したものでもい
ずれも同等に使用できる。唯、延伸処理した場合にあっ
ては、より細いモノフィラメント又はより薄いテープ状
成形物が得られ易いこと、及び研摩時の靭性が向上する
ことから、より好ましい。On the other hand, when the thermoplastic resin is an amorphous polymer,
Both the unstretched state and the further stretched state can be equally used. However, stretching treatment is more preferable because thinner monofilaments or thinner tape-shaped molded products can be easily obtained and the toughness during polishing is improved.
溶融成形時の溶融吐出温度は、用いる熱可塑性樹脂の溶
融粘度が５００〜５０．０００ポイズ程度となる温度が
好ましく、この温度は熱可塑性樹脂の種類及びその分子
量によって変化する。例えば、分子量が大きくなると粘
度は大きくなるので溶融吐出温度を高くする必要がある
。しかし、通常結晶性ポリマーの場合には、その温度は
融点（Ｔｍ） ＋１０℃乃至Ｔｍ＋６０℃の範囲にする
のが好ましい。The melt discharge temperature during melt molding is preferably a temperature at which the melt viscosity of the thermoplastic resin used is approximately 500 to 50,000 poise, and this temperature varies depending on the type of thermoplastic resin and its molecular weight. For example, as the molecular weight increases, the viscosity increases, so it is necessary to increase the melting and discharge temperature. However, in the case of normally crystalline polymers, the temperature is preferably in the range of melting point (Tm) +10°C to Tm +60°C.
また、得ようとする成形物の形態によっても最適な溶融
粘度は異なってくる。繊維径の大きいモノフィラメント
を得るためには溶融粘度の大きい方がよく、逆に小さい
モノフィラメント、膜厚の薄いテープ状の成形物等を得
るには溶融粘度が小さい方が良い。例えば、径０．１ｍ
ｍ以下のモノフィラメント又は厚さ０．１ｍｍ以下のテ
ープを得るには１０００〜３０００ポイズの溶融粘度の
ものが好ましく、径０．７ｍｍ以上のモノフィラメント
又は厚さ０．７ｍｍ以上のテープを得るには４０００〜
８０００ボイズのものが好ましく使用される。The optimum melt viscosity also varies depending on the form of the molded product to be obtained. In order to obtain a monofilament with a large fiber diameter, it is better to have a high melt viscosity, and conversely, to obtain a small monofilament, a thin tape-shaped molded product, etc., it is better to have a low melt viscosity. For example, diameter 0.1m
A melt viscosity of 1000 to 3000 poise is preferable to obtain a monofilament with a diameter of 0.7 mm or more or a tape with a thickness of 0.1 mm or less, and a melt viscosity of 4000 poise to obtain a monofilament with a diameter of 0.7 mm or more or a tape with a thickness of 0.7 mm or more. ~
Those with 8000 voices are preferably used.
なお、本発明においては、熱可塑性樹脂に熱安定剤、酸
化防止剤、耐光剤、充填剤等の各種添加剤を配合しても
良いが、溶融成形時に実質的に熱分解しないことが必要
である。In addition, in the present invention, various additives such as heat stabilizers, antioxidants, light stabilizers, fillers, etc. may be added to the thermoplastic resin, but it is necessary that the additives do not substantially thermally decompose during melt molding. be.
（発明の効果）
以上に詳述した本発明の研摩用成形物、特にモノフィラ
メント又はテープ状物は、従来研摩中に使用されていた
洗浄液く温水、酸性洗液、アルカリ性洗液等）により膨
潤されることがなく、また、研摩中に力学的特性が余り
変化しないので、極めて優れた研摩性能を有する。しか
も、耐屈曲疲労性に優れているだけでなく、摩擦抵抗が
少ないので発熱も少なく、洗浄液を併用しないドライ研
摩においても研摩面にポリマー融着物を付着させないと
いった、従来の研摩材には見られない特性を有するもの
である。(Effects of the Invention) The molded article for polishing of the present invention detailed above, especially the monofilament or tape-like article, is swollen by the cleaning liquid conventionally used during polishing (warm water, acidic cleaning liquid, alkaline cleaning liquid, etc.). Also, the mechanical properties do not change much during polishing, so it has extremely excellent polishing performance. Moreover, it not only has excellent bending fatigue resistance, but also generates less heat due to low frictional resistance, and does not allow polymer fusion to adhere to the polished surface even during dry polishing without a cleaning solution, unlike conventional abrasives. It has certain characteristics.
（実施例〉 以下、実施例により本発明をさらに詳細に説明する。(Example> Hereinafter, the present invention will be explained in more detail with reference to Examples.
実施例１
ポリエーテルエーテルケトン（ＩＣＩ社製ＰＥＥＫ３８
０Ｇ） Ｔｍ−＝３４３℃に、砥剤粒子として粒度＃１
００の炭化ケイ素を１６重量％トライブレンドし、この
混合物を溶融温度３８５℃で溶融し、口金に設けた孔径
２．Ｏｍｍから口金温度３６５℃にて吐出し、口金面下
１．３ｍに水面がある７０℃の温水浴に１．５ｍ長通過
させて冷却した後、２８ｍ／分の速度で未延伸モノフィ
ラメントを巻き取った。この未延伸糸を３４０℃の乾熱
バス中で１．８倍延伸し、そのｆ＆ ３５０℃の乾熱ガ
ス中でオーバーフィード率３％にて２秒間熱セツトして
結晶化させた。得られたモノフィラメントは繊維径０．
４ｍｍであり、切断強力３．２Ｋｇ、その伸度１４％、
無緊張下２４０℃で３０分間乾熱処理した時の収縮率は
１．８％であった。これを巾３００ｍｍのブラシロール
に電文２５ｍｍで植毛して外径２５０ｍｍのローラーブ
ラシを作成し、ラップ量２ｍｍ、回転数１０００ｒ、
ｐ、 ｍにて、水や酸性液を注ぐことなく、５Ｓ４１の
鉄板を１０分間研摩した。その時の研削量を厚さの変化
から測定した。その値は２．９〜３．５μであり、研摩
面には融着ポリマーは全く付着してなく、鏡面の如く美
しかった。また、このブラシで、濃度４０％、液温７０
℃の硫酸液を注ぎながら１時間研摩テストを行なったが
、ブラシのモノフィラメントは折れたり、あるいは膨潤
したりすることは全くなく極めて良好なものであった。Example 1 Polyetheretherketone (PEEK38 manufactured by ICI)
0G) Tm-=343℃, particle size #1 as abrasive particles
00 silicon carbide in an amount of 16 wt. The undrawn monofilament was discharged from Omm at a nozzle temperature of 365°C, passed through a 70°C hot water bath with a water surface 1.3m below the nozzle surface for a length of 1.5 m to cool, and then wound up at a speed of 28 m/min. Ta. This undrawn yarn was drawn 1.8 times in a dry heat bath at 340°C, and then heat set for 2 seconds in a dry heat gas at f&350°C at an overfeed ratio of 3% to crystallize it. The obtained monofilament has a fiber diameter of 0.
4mm, cutting strength 3.2Kg, elongation 14%,
When subjected to dry heat treatment at 240° C. for 30 minutes without tension, the shrinkage rate was 1.8%. A roller brush with an outer diameter of 250 mm was created by flocking this on a brush roll with a width of 300 mm with a telegram of 25 mm, a wrap amount of 2 mm, a rotation speed of 1000 r,
A 5S41 iron plate was polished for 10 minutes at p and m without pouring water or acidic liquid. The amount of grinding at that time was measured from the change in thickness. The value was 2.9 to 3.5μ, and no fused polymer was attached to the polished surface, which was as beautiful as a mirror. Also, with this brush, the concentration is 40% and the liquid temperature is 70%.
A polishing test was carried out for 1 hour while pouring a sulfuric acid solution at 0.degree. C., but the monofilament of the brush did not break or swell at all and was found to be in excellent condition.
実施例２
ポリエーテルイミド（ＧＥ社製＃５００１ ） Ｔｇ＝
２１７℃に、砥剤粒子として粒度＃２４０の炭化ケイ素
（昭和電工■製〉を２０重量％トライブレンドした。Example 2 Polyetherimide (GE #5001) Tg=
At 217°C, 20% by weight of silicon carbide (manufactured by Showa Denko) with a particle size of #240 was triblended as abrasive particles.
これを溶融温度３７０℃で孔径３． Ｏｍｍの口金から
押出し、実施例１の如く口金下１．２ｍで水冷し、巻取
速度１５ｍ／分にて繊維径１．０ｍｍのモノフィラメン
トを巻き取った。このモノフィラメントを実施例１の如
く電文３５ｍｍで植毛して、外径２７０ｍｍのローラー
ブラシを作成した。ラップｊＬ３ｍｍ、回転数７００ｒ
、 ｐ、 ｍにて実施例１と同様に鉄板を１０分間研摩
した。その結果、実施例１と同様に研摩面は鏡の如く良
好であり、融着物もなかった。また、６０℃の温水を注
ぎながら研摩しても、その研摩性能は低下せず、かつ膨
潤も認められなかった。This was melted at a melting temperature of 370°C and a pore size of 3. The monofilament was extruded through an Omm nozzle, cooled with water at 1.2 m below the nozzle as in Example 1, and wound into a monofilament having a fiber diameter of 1.0 mm at a winding speed of 15 m/min. This monofilament was flocked with a telegram of 35 mm as in Example 1 to create a roller brush with an outer diameter of 270 mm. Wrap jL3mm, rotation speed 700r
, p, and m for 10 minutes in the same manner as in Example 1. As a result, as in Example 1, the polished surface was as good as a mirror, and there was no fused material. Furthermore, even when the polishing was performed while pouring hot water at 60° C., the polishing performance did not deteriorate and no swelling was observed.
比較例１
固有粘度０．９７のポリブチレンテレフタレート（Ｔｍ
＝２１８℃）に、実施例１と同一の炭化ケイ素を１５重
量％混合し、溶融温度２８０℃にて孔径３．Ｏｍｍの口
金より吐出させ、室温の冷却バスを通して巻取速度３０
ｍ／分で未延伸糸を巻き取った。次いで、８０℃の温水
バス中でこの未延伸モノフィラメントを３．０倍に延伸
後、１５０℃の乾熱バス中で１０秒間熱セツトして直径
１．０ｍｍのモノフィラメントを得た。このモノフィラ
メントを使用して実施例２と同様のローラーブラシを作
成し、同一条件にて研摩テストを行なった。注水をしな
い場合には、研摩面に融着ポリマーが付着しており、到
底鏡面とは言えないものであった。また、研摩の斑も大
きく、かつ研摩の程度も不十分なものであった。Comparative Example 1 Polybutylene terephthalate (Tm
= 218°C) was mixed with 15% by weight of the same silicon carbide as in Example 1, and the pore diameter was 3.5% at a melting temperature of 280°C. Discharged from a 0mm mouthpiece and passed through a cooling bath at room temperature at a winding speed of 30.
The undrawn yarn was wound up at m/min. Next, this undrawn monofilament was stretched 3.0 times in a hot water bath at 80°C, and then heat set for 10 seconds in a dry heat bath at 150°C to obtain a monofilament having a diameter of 1.0 mm. A roller brush similar to that in Example 2 was prepared using this monofilament, and a polishing test was conducted under the same conditions. When water was not poured, the fused polymer adhered to the polished surface, and the surface could not be called a mirror surface at all. Furthermore, the polishing spots were large and the degree of polishing was insufficient.
一方、６０℃の温水を注ぎながら研摩した場合では、融
着ポリマーの発生はなくなるが、研摩性が不十分であっ
た。したがって、この場合にはモノフィラメント自身が
柔らかくなり、鉄板面への接圧が低くなっていることが
明らかである。On the other hand, when polishing was performed while pouring hot water at 60° C., the generation of fused polymer disappeared, but the polishing performance was insufficient. Therefore, in this case, it is clear that the monofilament itself becomes soft and the contact pressure against the iron plate surface becomes low.
Claims (3)
以上である熱可塑性樹脂５０〜９５重量部と、砥剤粒子
５〜５０重量部とを混合し、これを溶融成形してなる耐
熱性を有する研摩用成形物。(1) Melting point is 280℃ or higher or glass transition point is 200℃
A heat-resistant abrasive molded product obtained by mixing 50 to 95 parts by weight of the above thermoplastic resin and 5 to 50 parts by weight of abrasive particles, and melt-molding the mixture.
である請求項（１）記載の耐熱性を有する研摩用成形物
。(2) The heat-resistant abrasive molded article according to claim (1), wherein the molded article is in the form of a monofilament or a tape.
ポリアリーレンエーテルケトン、ポリアミドイミド、ポ
リエーテルスルフォンから選ばれる少なくとも１種から
なる請求項（１）又は（２）記載の耐熱性を有する研摩
用成形物。(3) The thermoplastic resin is polyphenylene sulfide,
The heat-resistant abrasive molded product according to claim 1 or 2, comprising at least one member selected from polyarylene ether ketone, polyamideimide, and polyether sulfone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1323766A JP2779238B2 (en) | 1989-12-15 | 1989-12-15 | Abrasive molding with heat resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1323766A JP2779238B2 (en) | 1989-12-15 | 1989-12-15 | Abrasive molding with heat resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03185089A true JPH03185089A (en) | 1991-08-13 |
| JP2779238B2 JP2779238B2 (en) | 1998-07-23 |
Family
ID=18158389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1323766A Expired - Fee Related JP2779238B2 (en) | 1989-12-15 | 1989-12-15 | Abrasive molding with heat resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2779238B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008240225A (en) * | 2007-03-01 | 2008-10-09 | Toray Ind Inc | Polyether-ether-ketone monofilament and method for producing the same, and filter comprising the same |
| JP2012207327A (en) * | 2011-03-29 | 2012-10-25 | Kuraray Co Ltd | Flame resistant monofilament, and method of manufacturing the same |
| CN103937248A (en) * | 2014-04-18 | 2014-07-23 | 安徽省中日农业环保科技有限公司 | Temperature-resisting nanometer bauxite modified polyphenylene sulfide material applied to automobile plastic part |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102294850B1 (en) * | 2015-04-10 | 2021-08-27 | 이화다이아몬드공업 주식회사 | Composition of resin binder for grinding tools |
-
1989
- 1989-12-15 JP JP1323766A patent/JP2779238B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008240225A (en) * | 2007-03-01 | 2008-10-09 | Toray Ind Inc | Polyether-ether-ketone monofilament and method for producing the same, and filter comprising the same |
| JP2012207327A (en) * | 2011-03-29 | 2012-10-25 | Kuraray Co Ltd | Flame resistant monofilament, and method of manufacturing the same |
| CN103937248A (en) * | 2014-04-18 | 2014-07-23 | 安徽省中日农业环保科技有限公司 | Temperature-resisting nanometer bauxite modified polyphenylene sulfide material applied to automobile plastic part |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2779238B2 (en) | 1998-07-23 |
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