JP6765707B2 - Sliding composition, sliding member and manufacturing method thereof - Google Patents
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- Sliding-Contact Bearings (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
本発明は、摺動組成物、並びに、摺動部材及びその製造方法に関する。 The present invention relates to a sliding composition, a sliding member, and a method for producing the same.
摺動部材は、その表面に接触する他の部材をすべらせて動かすための部材であり、例えば、スリーブやベアリング等の軸受などに用いられ、撹拌機や加工機械等の種々の工業機械における重要な部材として知られている。
従来の摺動部材としては、例えば、特許文献１に記載のものが知られている。
特許文献１には、１０〜６０重量％のフッ素樹脂、３７〜６０重量％の天然黒鉛粉末、及び２〜３０重量％の炭素繊維から成るフッ素樹脂組成物を成形して得られるシール材中の空隙に、熱硬化性樹脂を含浸し硬化させることにより該空隙を封孔したシール材が記載されている。
The sliding member is a member for sliding and moving other members in contact with the surface thereof, and is used for bearings such as sleeves and bearings, and is important in various industrial machines such as agitators and processing machines. It is known as a member.
As a conventional sliding member, for example, the one described in Patent Document 1 is known.
Patent Document 1 describes in a sealing material obtained by molding a fluororesin composition composed of 10 to 60% by weight of fluororesin, 37 to 60% by weight of natural graphite powder, and 2 to 30% by weight of carbon fibers. A sealing material that seals the voids by impregnating the voids with a thermosetting resin and curing the voids is described.
本発明が解決しようとする課題は、得られる硬化物の摩擦特性、耐摩耗性及び耐薬品性に優れる摺動組成物を提供することである。
また、本発明が解決しようとする他の課題は、摩擦特性、耐摩耗性及び耐薬品性に優れる摺動部材及びその製造方法を提供することである。
An object to be solved by the present invention is to provide a sliding composition having excellent friction characteristics, wear resistance and chemical resistance of the obtained cured product.
Another problem to be solved by the present invention is to provide a sliding member having excellent friction characteristics, wear resistance and chemical resistance, and a method for manufacturing the same.
本発明の上記課題は、以下の＜１＞、＜６＞又は＜８＞に記載の手段により解決された。好ましい実施態様である＜２＞〜＜５＞及び＜７＞とともに以下に記載する。
＜１＞ウルシオール、ラッコール、及び、チチオールよりなる群から選ばれた少なくとも１種の化合物、及び、固体潤滑剤を含有する摺動組成物、
＜２＞前記固体潤滑剤が、ポリテトラフルオロエチレン粉末を含む、＜１＞に記載の摺動組成物、
＜３＞前記固体潤滑剤の含有量が、摺動組成物の全質量に対し、１０〜６０質量％である、＜１＞又は＜２＞に記載の摺動組成物、
＜４＞前記固体潤滑剤の含有量が、摺動組成物の全質量に対し、２５〜４５質量％である、＜１＞〜＜３＞のいずれか１つに記載の摺動組成物、
＜５＞前記ウルシオール、ラッコール、及び、チチオールの総含有量が、摺動組成物の全質量に対し、１０〜９０質量％である、＜１＞〜＜４＞のいずれか１つに記載の摺動組成物、
＜６＞＜１＞〜＜５＞のいずれか１つに記載の摺動組成物を硬化してなる硬化物を摺動面に少なくとも備えた摺動部材、
＜７＞前記摺動部材が、基材の摺動面の少なくとも一部に前記摺動組成物を硬化してなる層を有する、＜６＞に記載の摺動部材、
＜８＞基材表面の少なくとも一部に＜１＞〜＜５＞のいずれか１つに記載の摺動組成物を塗布する塗布工程、及び、塗布された前記摺動組成物を硬化させる硬化工程を含む摺動部材の製造方法。
The above-mentioned problems of the present invention have been solved by the means described in <1>, <6> or <8> below. It is described below together with preferred embodiments <2> to <5> and <7>.
<1> A sliding composition containing at least one compound selected from the group consisting of urushiol, laccol, and thithiol, and a solid lubricant.
<2> The sliding composition according to <1>, wherein the solid lubricant contains a polytetrafluoroethylene powder.
<3> The sliding composition according to <1> or <2>, wherein the content of the solid lubricant is 10 to 60% by mass with respect to the total mass of the sliding composition.
<4> The sliding composition according to any one of <1> to <3>, wherein the content of the solid lubricant is 25 to 45% by mass with respect to the total mass of the sliding composition.
<5> Described in any one of <1> to <4>, wherein the total content of urushiol, laccol, and thithiol is 10 to 90% by mass with respect to the total mass of the sliding composition. Sliding composition,
<6> A sliding member having at least a cured product obtained by curing the sliding composition according to any one of <1> to <5> on the sliding surface.
<7> The sliding member according to <6>, wherein the sliding member has a layer formed by curing the sliding composition on at least a part of the sliding surface of the base material.
<8> A coating step of applying the sliding composition according to any one of <1> to <5> to at least a part of the surface of the base material, and curing of the applied sliding composition. A method for manufacturing a sliding member including a process.
本発明によれば、得られる硬化物の摩擦特性、耐摩耗性及び耐薬品性に優れる摺動組成物を提供することができた。
また、本発明によれば、摩擦特性、耐摩耗性及び耐薬品性に優れる摺動部材及びその製造方法を提供することができた。
According to the present invention, it is possible to provide a sliding composition having excellent friction characteristics, wear resistance and chemical resistance of the obtained cured product.
Further, according to the present invention, it has been possible to provide a sliding member having excellent friction characteristics, wear resistance and chemical resistance, and a method for manufacturing the same.
以下において、本発明の内容について詳細に説明する。以下に記載する構成要件の説明は、本発明の代表的な実施態様に基づいてなされることがあるが、本発明はそのような実施態様に限定されるものではない。なお、本願明細書において「〜」とはその前後に記載される数値を下限値及び上限値として含む意味で使用される。
本発明において、「質量％」と「重量％」とは同義であり、「質量部」と「重量部」とは同義である。
また、本発明において、２以上の好ましい態様の組み合わせは、より好ましい態様である。
The contents of the present invention will be described in detail below. The description of the constituent elements described below may be based on typical embodiments of the present invention, but the present invention is not limited to such embodiments. In the specification of the present application, "~" is used in the meaning of including the numerical values described before and after the lower limit value and the upper limit value.
In the present invention, "% by mass" and "% by weight" are synonymous, and "parts by mass" and "parts by weight" are synonymous.
Further, in the present invention, a combination of two or more preferred embodiments is a more preferred embodiment.
（摺動組成物）
本発明の摺動組成物は、ウルシオール、ラッコール、及び、チチオールよりなる群から選ばれた少なくとも１種の化合物、及び、固体潤滑剤を含有することを特徴とする。
漆は、一般に、漆の木から採取される樹液を基にした天然材料であり、ウルシオール、ラッコール、及び、チチオールよりなる群から選ばれた少なくとも１種の化合物を含むものである。
漆は、漆器に代表されるように、古くから食器のコート材として用いられており、硬質の材料であることが知られている。
本発明者らが鋭意検討した結果、漆、及び、固体潤滑剤を含有する摺動組成物を硬化したものが、摩擦特性に優れ（摩擦係数が小さく）、耐摩耗性に優れ、また、耐薬品性に優れることを見出した。
本発明の摺動組成物は、様々な機械に用いられる摺動部材の摺動部分のコート材として、好適に用いることができる。
また、本発明の摺動組成物を硬化した硬化物は、漆の硬化物であるため、人体への影響を与える物質の溶出、及び、摩耗による硬化物の飛散が少なく、また、酸やアルカリ溶液に対する耐薬品性に優れるため、食品加工機械に使用する摺動部材に特に好適に用いることができる。
(Sliding composition)
The sliding composition of the present invention is characterized by containing at least one compound selected from the group consisting of urushiol, laccol, and thithiol, and a solid lubricant.
Lacquer is generally a sap-based natural material collected from lacquer trees and contains at least one compound selected from the group consisting of urushiol, lacquer, and thithiol.
Lacquer, as typified by lacquer ware, has long been used as a coating material for tableware and is known to be a hard material.
As a result of diligent studies by the present inventors, a cured sliding composition containing lacquer and a solid lubricant has excellent friction characteristics (small coefficient of friction), excellent wear resistance, and resistance. It was found to be excellent in chemical properties.
The sliding composition of the present invention can be suitably used as a coating material for sliding portions of sliding members used in various machines.
Further, since the cured product obtained by curing the sliding composition of the present invention is a cured product of lacquer, elution of substances affecting the human body and scattering of the cured product due to abrasion are small, and acids and alkalis are not required. Since it has excellent chemical resistance to a solution, it can be particularly preferably used for a sliding member used in a food processing machine.
＜ウルシオール、ラッコール、及び、チチオールよりなる群から選ばれた少なくとも１種の化合物＞
本発明の摺動組成物は、ウルシオール、ラッコール、及び、チチオールよりなる群から選ばれた少なくとも１種の化合物を含有する。
前述したように、漆には、ウルシオール、ラッコール、及び、チチオールよりなる群から選ばれた少なくとも１種の化合物が含まれ、本発明の摺動組成物は、漆を好適に含有することができる。
なお、本発明における「漆」は、未硬化の漆である。
本発明の摺動組成物は、前記ウルシオール、ラッコール、又は、チチオールだけでなく、漆に含まれる、水、及び、ラッカーゼ酵素を含んでいてもよく、また、樹液由来のゴム成分や糖タンパク等を含んでいてもよい。
漆中における水は、油中水滴型エマルションとして含まれており、本発明の摺動組成物中においても同様である。
また、漆としては、生漆であっても、精製漆であってもよい。
生漆としては、特に制限はなく、日本産生漆、中国産生漆、台湾産生漆、ベトナム産生漆、タイ産生漆、及び、ミャンマー産生漆等が挙げられる。
精製漆としては、例えば、混練処理（なやし）を行った精製漆、及び、加熱処理をして水分を低減した脱水精製漆（くろめ漆）が挙げられる。
また、脱水精製漆としては、そのまま使用する透漆であってもよいし、鉄粉又は水酸化鉄により黒く着色した後固形分を除いた黒漆であってもよい。
更に、前記透漆又は前記黒漆は、そのまま無油漆として用いてもよいし、アマニ油やエノ油等の乾性油を加えた有油漆として用いてもよい。
これらの中でも、本発明に用いる漆としては、ウルシオールを少なくとも含む漆が好ましい。
<At least one compound selected from the group consisting of urushiol, laccol, and thithiol>
The sliding composition of the present invention contains at least one compound selected from the group consisting of urushiol, laccol, and thithiol.
As described above, the lacquer contains at least one compound selected from the group consisting of urushiol, lacquer, and thithiol, and the sliding composition of the present invention may preferably contain lacquer. it can.
The "lacquer" in the present invention is uncured lacquer.
The sliding composition of the present invention may contain not only the above-mentioned urushiol, lacquer or thithiol, but also water and laccase enzyme contained in lacquer, and a rubber component or glycoprotein derived from sap. Etc. may be included.
Water in lacquer is contained as a water-in-oil emulsion, and the same applies to the sliding composition of the present invention.
Further, the lacquer may be raw lacquer or refined lacquer.
The raw lacquer is not particularly limited, and examples thereof include Japanese lacquer, Chinese lacquer, Taiwanese lacquer, Vietnamese lacquer, Thai lacquer, and Myanmar lacquer.
Examples of the refined lacquer include refined lacquer that has been kneaded (tanned) and dehydrated refined lacquer (kurome lacquer) that has been heat-treated to reduce water content.
Further, the dehydrated and refined lacquer may be transparent lacquer to be used as it is, or black lacquer obtained by coloring black with iron powder or iron hydroxide and then removing the solid content.
Further, the transparent lacquer or the black lacquer may be used as it is as an oil-free lacquer, or may be used as an oiled lacquer to which a drying oil such as linseed oil or eno oil is added.
Among these, as the lacquer used in the present invention, lacquer containing at least urushiol is preferable.
ウルシオール、ラッコール、及び、チチオールよりなる群から選ばれた少なくとも１種の化合物は、１種単独で含有していても、２種以上を含有していてもよい。
本発明の摺動組成物におけるウルシオール、ラッコール、及び、チチオールの総含有量は、摺動組成物の全質量に対し、１０〜９０質量％であることが好ましく、２０〜８５質量％であることがより好ましく、３０〜７５質量％であることが特に好ましい。上記範囲であると、得られる硬化物の摩擦特性、耐摩耗性及び耐薬品性により優れ、また、安全性に優れる。
本発明の摺動組成物における水の含有量は、摺動組成物の全質量に対し、３０質量％以下であることが好ましく、０．１〜３０質量％であることがより好ましく、０．５〜１５質量％であることが特に好ましい。
At least one compound selected from the group consisting of urushiol, laccol, and thithiol may be contained alone or in combination of two or more.
The total content of urushiol, laccol, and thithiol in the sliding composition of the present invention is preferably 10 to 90% by mass, preferably 20 to 85% by mass, based on the total mass of the sliding composition. It is more preferable, and it is particularly preferable that it is 30 to 75% by mass. Within the above range, the obtained cured product is excellent in friction characteristics, wear resistance and chemical resistance, and is also excellent in safety.
The content of water in the sliding composition of the present invention is preferably 30% by mass or less, more preferably 0.1 to 30% by mass, based on the total mass of the sliding composition. It is particularly preferably 5 to 15% by mass.
＜固体潤滑剤＞
本発明の摺動組成物は、固体潤滑剤を含有する。
固体潤滑剤としては、特に制限はなく、公知のものを用いることができ、例えば、粉末状のものが挙げられる。
固体潤滑剤の材質の具体例としては、ポリテトラフルオロエチレン（ＰＴＦＥ）、パーフルオロポリエーテル、ポリクロロトリフルオロエチレン、ポリフッ化ビニリデン、ポリフッ化ビニル、テトラフルオロエチレン／パーフルオロアルコキシエチレン共重合体、テトラフルオロエチレン／ヘキサフルオロプロピレン共重合体等のフッ素樹脂；（変性）ポリエチレン、（変性）ポリプロピレン等の（変性）ポリオレフィン；ポリジメチルシロキサン、ポリメチルフェニルシロキサン、アミノ変性ポリジメチルシロキサン、エポキシ変性ポリジメチルシロキサン、アルコール変性ポリジメチルシロキサン、カルボキシ変性ポリジメチルシロキサン、フッ素変性ポリジメチルシロキサン等のシリコーン；天然黒鉛、人工黒鉛等の黒鉛；二硫化モリブデン、二硫化タングステン、酸化亜鉛、メタケイ酸カルシウム；液晶ポリエステル繊維、アラミド繊維等の有機繊維；液晶ポリエステル等の高分子化合物などが例示できる。
中でも、ポリテトラフルオロエチレン、黒鉛、又は、二硫化モリブデンが好ましく、ポリテトラフルオロエチレンがより好ましく、ポリテトラフルオロエチレン粉末が特に好ましい。
<Solid lubricant>
The sliding composition of the present invention contains a solid lubricant.
The solid lubricant is not particularly limited, and known ones can be used, and examples thereof include powdery ones.
Specific examples of the material of the solid lubricant include polytetrafluoroethylene (PTFE), perfluoropolyether, polychlorotrifluoroethylene, polyvinylidene fluoride, polyvinyl fluoride, tetrafluoroethylene / perfluoroalkoxyethylene copolymer, and the like. Fluororesin such as tetrafluoroethylene / hexafluoropropylene copolymer; (modified) polyethylene, (modified) polyolefin such as (modified) polypropylene; polydimethylsiloxane, polymethylphenylsiloxane, amino-modified polydimethylsiloxane, epoxy-modified polydimethyl Silicone such as siloxane, alcohol-modified polydimethylsiloxane, carboxy-modified polydimethylsiloxane, fluorine-modified polydimethylsiloxane; graphite such as natural graphite and artificial graphite; molybdenum disulfide, tungsten disulfide, zinc oxide, calcium metasilicate; liquid crystal polyester fiber , Organic fibers such as aramid fibers; polymer compounds such as liquid crystal polyester can be exemplified.
Among them, polytetrafluoroethylene, graphite, or molybdenum disulfide is preferable, polytetrafluoroethylene is more preferable, and polytetrafluoroethylene powder is particularly preferable.
固体潤滑剤の平均粒径としては、０．１〜２００μｍであることが好ましく、０．５〜１００μｍであることがより好ましく、１〜１０μｍであることが特に好ましい。上記範囲であると、得られる硬化物の摩擦特性及び耐摩耗性により優れる。
固体潤滑剤の平均粒径の測定方法としては、公知の方法を用いることができ、例えば、レーザー回折式粒度分布測定装置により測定する方法、及び、摺動組成物を硬化した硬化物の断面を走査型電子顕微鏡により観察し測定する方法等が挙げられる。また、本発明において、平均粒径は、５０個以上の測定値の平均値をとるものとする。
The average particle size of the solid lubricant is preferably 0.1 to 200 μm, more preferably 0.5 to 100 μm, and particularly preferably 1 to 10 μm. Within the above range, the obtained cured product is more excellent in friction characteristics and wear resistance.
As a method for measuring the average particle size of the solid lubricant, a known method can be used. For example, a method for measuring with a laser diffraction type particle size distribution measuring device and a cross section of a cured product obtained by curing the sliding composition can be obtained. Examples thereof include a method of observing and measuring with a scanning electron microscope. Further, in the present invention, the average particle size shall be the average value of 50 or more measured values.
固体潤滑剤は、１種単独で含有していても、２種以上を含有していてもよい。
本発明の摺動組成物における固体潤滑剤の含有量は、摺動組成物の全質量に対し、５〜７０質量％であることが好ましく、１０〜６０質量％であることがより好ましく、１０〜５０質量％であることが更に好ましく、２５〜４５質量％であることが特に好ましい。上記範囲であると、得られる硬化物の摩擦特性、耐摩耗性及び耐薬品性により優れる。
The solid lubricant may be contained alone or in combination of two or more.
The content of the solid lubricant in the sliding composition of the present invention is preferably 5 to 70% by mass, more preferably 10 to 60% by mass, based on the total mass of the sliding composition. It is more preferably ~ 50% by mass, and particularly preferably 25 to 45% by mass. Within the above range, the obtained cured product is excellent in friction characteristics, wear resistance and chemical resistance.
＜界面活性剤＞
本発明の摺動組成物は、組成物中での固体潤滑剤の凝集を抑制するため、界面活性剤を含有していてもよい。
界面活性剤としては、特に制限はなく、公知の界面活性剤を用いることができる。
界面活性剤として具体的には、ポリオキシエチレンアルキルエーテル、ポリオキシエチレンステアリン酸アミド、ポリオキシエチレンラウリルエーテル、ポリオキシエチレントリデシルエーテル、ポリオキシエチレンオレイルエーテル、ポリオキシエチレンセチルエーテル、ポリオキシエチレンステアリルエーテル、ポリオキシエチレン硬化ヒマシ油、モノオレイン酸ポリエチレングリコール、ジオレイン酸ポリエチレングリコール、モノステアリン酸ポリエチレングリコール、ジステアリン酸ポリエチレングリコール、親油型モノステアリン酸グリセリン、テトラオレイン酸ポリオキシエチレンソルビット、モノラウリン酸ソルビタン、モノパルミチン酸ソルビタン、ジステアリン酸ソルビタン、モノオレイン酸ソルビタン、セスキオレイン酸ソルビタン、トリオレイン酸ソルビタン、モノラウリン酸ポリオキシエチレンソルビタン、モノパルミチン酸ポリオキシエチレンソルビタン、モノステアリン酸ポリオキシエチレンソルビタン、モノオレイン酸ポリオキシエチレンソルビタン及びトリオレイン酸ポリオキシエチレンソルビタン等が例示できる。
<Surfactant>
The sliding composition of the present invention may contain a surfactant in order to suppress the aggregation of the solid lubricant in the composition.
The surfactant is not particularly limited, and a known surfactant can be used.
Specific examples of the surfactant include polyoxyethylene alkyl ether, polyoxyethylene stearate amide, polyoxyethylene lauryl ether, polyoxyethylene tridecyl ether, polyoxyethylene oleyl ether, polyoxyethylene cetyl ether, and polyoxyethylene. Stearyl ether, polyoxyethylene hydrogenated castor oil, polyethylene glycol monooleate, polyethylene glycol dioleate, polyethylene glycol monostearate, polyethylene glycol distearate, glycerin monostearate, polyoxyethylene sorbit tetraoleate, monolauric acid Sorbitane, sorbitan monopalmitate, sorbitan distearate, sorbitan monooleate, sorbitan sesquioleate, sorbitan trioleate, polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, mono Examples thereof include polyoxyethylene sorbitan oleate and polyoxyethylene sorbitan trioleate.
界面活性剤は、１種単独で含有していても、２種以上を含有していてもよい。
本発明の摺動組成物における界面活性剤の含有量は、摺動組成物の全質量に対し、０．０１〜１０質量％であることが好ましく、０．１〜５質量％であることがより好ましい。上記範囲であると、得られる硬化物の摩擦特性及び耐摩耗性により優れ、また、摺動組成物の安定性に優れる。
The surfactant may be contained alone or in combination of two or more.
The content of the surfactant in the sliding composition of the present invention is preferably 0.01 to 10% by mass, preferably 0.1 to 5% by mass, based on the total mass of the sliding composition. More preferred. Within the above range, the obtained cured product is excellent in friction characteristics and wear resistance, and the stability of the sliding composition is excellent.
＜他の成分＞
本発明の摺動組成物は、前述した以外の他の成分を含有していてもよい。
他の成分としては、特に制限はなく、公知の各種添加剤を用いることができる。
添加剤としては、例えば、前記界面活性剤以外の分散安定剤、硬化促進剤、着色剤、及び、塗布溶媒等が挙げられる。
<Other ingredients>
The sliding composition of the present invention may contain components other than those described above.
The other components are not particularly limited, and various known additives can be used.
Examples of the additive include a dispersion stabilizer other than the surfactant, a curing accelerator, a colorant, a coating solvent and the like.
（摺動部材）
本発明の摺動部材は、本発明の摺動組成物を硬化してなる硬化物を摺動面に備えた摺動部材である。
本発明の摺動部材は、摺動部分に本発明の摺動組成物の硬化物を備えるため、人体への影響を与える物質の溶出、及び、摩耗による硬化物の飛散が少なく、また、酸やアルカリ溶液に対する耐薬品性に優れ、食品加工機械に使用する摺動部材に特に好適に用いることができる。
本発明の摺動部材は、基材の摺動面の少なくとも一部に本発明の摺動組成物を硬化してなる層を有していてもよい。
また、本発明の摺動部材は、全体が本発明の摺動組成物を硬化してなる硬化物である摺動部材であってもよいし、少なくとも摺動部分に本発明の摺動組成物を硬化してなる硬化物を有する摺動部材であってもよい。
本発明の摺動部材として、具体的には例えば、基材の摺動面に本発明の摺動組成物を層状に塗布し硬化させたもの、本発明の摺動組成物を摺動部材の形状に硬化させたもの、及び、織布又は不織布に本発明の摺動組成物を含浸させ所望の形状に成形した後硬化させたもの等が挙げられる。
本発明の摺動部材に用いる基材の形状は、特に制限はなく、使用する装置又は機械における所望の形状に応じ、任意の形状とすることができる。
本発明の摺動部材に用いる基材の材質としては、特に制限はなく、例えば、金属、樹脂、木材、織布、不織布、及び、これらの複合基材等が挙げられ、金属であることが好ましい。
また、本発明の摺動部材に用いる基材は、単一の材質の基材であっても、複数種の材質の基材を組み合わせたものであってもよい。
(Sliding member)
The sliding member of the present invention is a sliding member provided with a cured product obtained by curing the sliding composition of the present invention on the sliding surface.
Since the sliding member of the present invention is provided with the cured product of the sliding composition of the present invention in the sliding portion, the elution of substances affecting the human body and the scattering of the cured product due to abrasion are small, and the acid It has excellent chemical resistance to alkaline solutions and can be particularly preferably used for sliding members used in food processing machines.
The sliding member of the present invention may have a layer formed by curing the sliding composition of the present invention on at least a part of the sliding surface of the base material.
Further, the sliding member of the present invention may be a sliding member which is a cured product obtained by curing the sliding composition of the present invention as a whole, or at least a sliding portion of the sliding composition of the present invention. It may be a sliding member having a cured product obtained by curing.
Specific examples of the sliding member of the present invention include a sliding member of the present invention coated with the sliding composition of the present invention in layers and cured, and a sliding member of the present invention. Examples thereof include those cured into a shape, those obtained by impregnating a woven fabric or a non-woven fabric with the sliding composition of the present invention, molding into a desired shape, and then curing.
The shape of the base material used for the sliding member of the present invention is not particularly limited, and may be any shape depending on the desired shape in the device or machine used.
The material of the base material used for the sliding member of the present invention is not particularly limited, and examples thereof include metal, resin, wood, woven fabric, non-woven fabric, and composite base materials thereof, and the material may be a metal. preferable.
Further, the base material used for the sliding member of the present invention may be a base material made of a single material or a combination of base materials made of a plurality of types of materials.
更に、本発明の摺動部材に用いる基材において、本発明の摺動組成物を硬化してなる層との密着性を高めるため、前記層を形成する部分の表面を、粗面化処理してもよい。
粗面化処理としては、公知の処理方法を用いることができ、例えば、やすりやペーパーやすり等による機械的粗面化処理、薬品処理による化学的粗面化処理、及び、これらを組み合わせた処理等が挙げられる。
また、前記基材に対して、焼き入れ処理等、公知の処理を行ってもよい。
Further, in the base material used for the sliding member of the present invention, in order to improve the adhesion to the layer obtained by curing the sliding composition of the present invention, the surface of the portion forming the layer is roughened. You may.
As the roughening treatment, a known treatment method can be used, for example, a mechanical roughening treatment using a file or a paper file, a chemical roughening treatment by a chemical treatment, a treatment combining these, and the like. Can be mentioned.
Further, the base material may be subjected to a known treatment such as quenching treatment.
本発明の摺動部材における本発明の摺動組成物を硬化してなる層の厚さは、所望の形状や耐久性を考慮し、適宜設定することができるが、１〜５，０００μｍであることが好ましく、２〜２，０００μｍであることがより好ましく、５〜１，５００μｍであることが特に好ましい。
本発明の摺動組成物を硬化してなる層を設ける基材表面は、平面であっても、曲面であってもよい。
また、本発明の摺動組成物を硬化してなる層を設ける基材が多面体である場合、本発明の摺動組成物を硬化してなる層を１つの面に有していても、２以上の面に有していてもよい。
更に、本発明の摺動部材における本発明の摺動組成物を硬化してなる層は、単層であってもよいし、２層以上の複層であってもよい。
The thickness of the layer obtained by curing the sliding composition of the present invention in the sliding member of the present invention can be appropriately set in consideration of a desired shape and durability, but is 1 to 5,000 μm. It is preferably 2 to 2,000 μm, more preferably 5 to 1,500 μm.
The surface of the base material on which the layer formed by curing the sliding composition of the present invention is provided may be a flat surface or a curved surface.
Further, when the base material provided with the layer obtained by curing the sliding composition of the present invention is a polyhedron, even if the layer formed by curing the sliding composition of the present invention is provided on one surface, 2 It may have on the above-mentioned surface.
Further, the layer obtained by curing the sliding composition of the present invention in the sliding member of the present invention may be a single layer or a plurality of layers.
（摺動部材の製造方法）
本発明の摺動部材の製造方法は、本発明の摺動部材を製造可能であれば特に制限はない。
本発明の摺動組成物を硬化した層を有する摺動部材の製造方法である場合、基材表面の少なくとも一部に本発明の摺動組成物を塗布する塗布工程、及び、塗布された前記摺動組成物を硬化させる硬化工程を含むことが好ましい。
(Manufacturing method of sliding member)
The method for manufacturing the sliding member of the present invention is not particularly limited as long as the sliding member of the present invention can be manufactured.
In the case of the method for producing a sliding member having a layer obtained by curing the sliding composition of the present invention, a coating step of applying the sliding composition of the present invention to at least a part of the surface of the base material, and the above-mentioned coating. It is preferable to include a curing step of curing the sliding composition.
＜塗布工程＞
本発明の摺動部材の製造方法は、基材表面の少なくとも一部に本発明の摺動組成物を塗布する塗布工程を含むことが好ましい。
本発明の摺動部材の製造方法に用いる基材としては、前述した基材が好ましく挙げられる。
本発明の摺動組成物を塗布する塗布方法としては、特に制限はなく、公知の塗布方法を用いることができる。また、本発明の摺動組成物は、漆と固体潤滑剤との組成比等により、液状であったり、ペースト状であったりするため、組成物の状態にあわせ塗布方法を適宜選択することが好ましい。
前記塗布工程における本発明の摺動組成物の塗布厚は、所望に応じて適宜設定することができるが、１〜５，０００μｍであることが好ましく、２〜２，０００μｍであることがより好ましく、５〜１，５００μｍであることが特に好ましい。
<Applying process>
The method for producing a sliding member of the present invention preferably includes a coating step of applying the sliding composition of the present invention to at least a part of the surface of the base material.
As the base material used in the method for producing a sliding member of the present invention, the above-mentioned base material is preferably mentioned.
The coating method for applying the sliding composition of the present invention is not particularly limited, and a known coating method can be used. Further, since the sliding composition of the present invention may be liquid or paste depending on the composition ratio of lacquer and solid lubricant, the coating method may be appropriately selected according to the state of the composition. preferable.
The coating thickness of the sliding composition of the present invention in the coating step can be appropriately set as desired, but is preferably 1 to 5,000 μm, more preferably 2 to 2,000 μm. , 5 to 1,500 μm is particularly preferable.
＜硬化工程＞
本発明の摺動部材の製造方法は、前記塗布工程において塗布された前記摺動組成物を硬化させる硬化工程を含むことが好ましい。硬化工程においては、前記摺動組成物におけるウルシオール、ラッコール及びチチオール等の重合性化合物が重合し、硬化する。
前記硬化工程における温度は、各成分の劣化抑制、及び、硬化性の観点から、２８０℃以下であることが好ましく、１５０℃〜２５０℃であることがより好ましい。
前記硬化工程における前記温度での硬化時間は、摺動組成物の硬化が十分進行すれば特に制限はないが、硬化させる摺動組成物の組成や厚さ等にも依存し、１分〜６０時間が好ましい。
前記硬化工程に用いる加熱手段としては、特に制限はなく、公知の加熱手段を用いることができる。加熱手段としては例えば、高温乾燥炉が挙げられる。
<Curing process>
The method for producing a sliding member of the present invention preferably includes a curing step of curing the sliding composition applied in the coating step. In the curing step, polymerizable compounds such as urushiol, laccol and thithiol in the sliding composition are polymerized and cured.
The temperature in the curing step is preferably 280 ° C. or lower, more preferably 150 ° C. to 250 ° C., from the viewpoint of suppressing deterioration of each component and curability.
The curing time at the temperature in the curing step is not particularly limited as long as the curing of the sliding composition progresses sufficiently, but it depends on the composition and thickness of the sliding composition to be cured, and is 1 minute to 60 minutes. Time is preferred.
The heating means used in the curing step is not particularly limited, and known heating means can be used. Examples of the heating means include a high temperature drying oven.
＜他の工程＞
本発明の摺動部材の製造方法は、前記塗布工程及び前記加熱工程以外に他の工程を含んでいてもよい。
他の工程としては、特に制限はなく、後述するような工程や、その他公知の工程を含むことができる。
他の工程として具体的には、例えば、前記塗布工程の前に基材の塗布面を洗浄する洗浄工程、前記塗布工程の前に基材の塗布面を粗面化する粗面化工程、前記加熱工程後、得られた摺動部材を洗浄する後洗浄工程、及び、前記加熱工程後、得られた摺動部材を所望の形状に加工する形状加工工程等が挙げられる。
<Other processes>
The method for manufacturing a sliding member of the present invention may include other steps in addition to the coating step and the heating step.
The other steps are not particularly limited and may include steps as described later and other known steps.
Specifically, as other steps, for example, a cleaning step of cleaning the coated surface of the base material before the coating step, a roughening step of roughening the coated surface of the base material before the coating step, the above-mentioned. Examples thereof include a post-cleaning step of cleaning the obtained sliding member after the heating step, and a shape processing step of processing the obtained sliding member into a desired shape after the heating step.
また、全体が本発明の摺動組成物を硬化してなる硬化物である摺動部材、又は、少なくとも摺動部分に本発明の摺動組成物を硬化してなる硬化物を有する摺動部材の製造方法である場合、本発明の摺動部材の製造方法は、本発明の摺動組成物を所望の形状とする工程、及び、所望の形状とした前記摺動組成物を硬化させる工程を含むか、又は、本発明の摺動組成物を硬化させる工程、及び、硬化した前記摺動組成物を所望の形状に加工する工程を含むことが好ましい。
前記硬化させる工程しては、前述した硬化工程と硬化温度及び硬化時間の好ましい態様は同様である。
また、これら摺動部材の製造方法は、前記他の工程を更に含んでいてもよい。
Further, a sliding member which is a cured product obtained by curing the sliding composition of the present invention as a whole, or a sliding member having a cured product obtained by curing the sliding composition of the present invention at least in a sliding portion. In the case of the manufacturing method of the above, in the manufacturing method of the sliding member of the present invention, a step of forming the sliding composition of the present invention into a desired shape and a step of curing the sliding composition having a desired shape are performed. It is preferable to include a step of curing the sliding composition of the present invention or a step of processing the cured sliding composition into a desired shape.
The curing step is the same as the curing step described above in terms of curing temperature and curing time.
Moreover, the manufacturing method of these sliding members may further include the other steps.
更に、本発明の摺動部材の製造方法としては、織布若しくは不織布又は所望の形状に成形した織布若しくは不織布に本発明の摺動組成物を含浸させる工程、織布若しくは不織布又は前記摺動組成物を含浸させた織布若しくは不織布を所望の形状に成形する工程、及び、前記織布若しくは不織布に含浸又は付着している前記摺動組成物を硬化させる工程を含む方法が好ましく挙げられる。
織布及び不織布としては、特に制限はなく、公知のものを用いることができる。
Further, as a method for producing the sliding member of the present invention, a step of impregnating a woven fabric or a non-woven fabric or a woven fabric or a non-woven fabric formed into a desired shape with the sliding composition of the present invention, the woven fabric or the non-woven fabric or the sliding A method including a step of molding the woven fabric or non-woven fabric impregnated with the composition into a desired shape and a step of curing the sliding composition impregnated or adhered to the woven fabric or non-woven fabric are preferably mentioned.
The woven fabric and the non-woven fabric are not particularly limited, and known ones can be used.
以下に実施例を挙げて本発明を更に具体的に説明する。以下の実施例に示す材料、使用量、割合、処理内容、処理手順等は、本発明の趣旨を逸脱しない限り、適宜、変更することができる。したがって、本発明の範囲は以下に示す具体例に限定されるものではない。なお、特に断りのない限り、「部」、「％」は質量基準である。 Hereinafter, the present invention will be described in more detail with reference to examples. The materials, amounts used, ratios, treatment contents, treatment procedures, etc. shown in the following examples can be appropriately changed as long as they do not deviate from the gist of the present invention. Therefore, the scope of the present invention is not limited to the specific examples shown below. Unless otherwise specified, "parts" and "%" are based on mass.
実施例及び比較例で使用した摺動組成物の各成分を以下に示す。
漆：日本国産生漆（ウルシオール約６３質量％含有）
ポリテトラフルオロエチレン粉末（ＰＴＦＥ粉末、平均粒径４μｍ、最大粒径１４μｍ、（株）サンプラテック製）
ポリテトラフルオロエチレン板材（亜木津工業（株）製）
Each component of the sliding composition used in Examples and Comparative Examples is shown below.
Lacquer: Japanese lacquer (containing about 63% by mass of urushiol)
Polytetrafluoroethylene powder (PTFE powder, average particle size 4 μm, maximum particle size 14 μm, manufactured by Sampler Tech Co., Ltd.)
Polytetrafluoroethylene board (manufactured by Akizu Kogyo Co., Ltd.)
（実施例１〜６、並びに、比較例１及び２）
＜摺動組成物の調製＞
ＰＴＦＥ粉末の含有量が、摺動組成物の全質量に対し、１０質量％となるように、漆（国産生漆）とＰＴＦＥ粉末とを混合し、実施例１の摺動組成物を調製した。
また、ＰＴＦＥ粉末の含有量が、摺動組成物の全質量に対し、２０質量％、３０質量％、４０質量％、５０質量％、又は、６０質量％とした以外は、実施例１の摺動組成物を調製と同様にして、実施例２〜６の摺動組成物をそれぞれ調製した。
比較例１については、漆（国産生漆）１００質量％のものを比較例１の摺動組成物とした。
(Examples 1 to 6 and Comparative Examples 1 and 2)
<Preparation of sliding composition>
The sliding composition of Example 1 was prepared by mixing lacquer (domestic lacquer) and PTFE powder so that the content of the PTFE powder was 10% by mass with respect to the total mass of the sliding composition.
Further, the slide of Example 1 is obtained except that the content of the PTFE powder is 20% by mass, 30% by mass, 40% by mass, 50% by mass, or 60% by mass with respect to the total mass of the sliding composition. The sliding compositions of Examples 2 to 6 were prepared in the same manner as in the preparation of the dynamic composition.
As for Comparative Example 1, 100% by mass of lacquer (domestic lacquer) was used as the sliding composition of Comparative Example 1.
＜試験片の調製＞
１５ｍｍ角の直方体の金属部材（ステンレス鋼（ＳＵＳ４２０Ｊ２）、厚さ７ｍｍ程度）における１５ｍｍ角の一面に、実施例１〜６又は比較例１の摺動組成物をそれぞれ塗布厚５０μｍで塗布した。摺動組成物を塗布した各金属部材を、高温乾燥炉にて２００℃で１２時間加熱し、摺動組成物を硬化させ、実施例１〜６又は比較例１の試験片（摺動部材）を作製した。
なお、比較例２の試験片は、ポリテトラフルオロエチレン板材を前記試験片と同じ大きさに切り出したものを使用した。
<Preparation of test piece>
The sliding compositions of Examples 1 to 6 or Comparative Example 1 were coated on one surface of a 15 mm square metal member (stainless steel (SUS420J2), about 7 mm thick) with a coating thickness of 50 μm. Each metal member coated with the sliding composition is heated at 200 ° C. for 12 hours in a high-temperature drying oven to cure the sliding composition, and the test pieces (sliding members) of Examples 1 to 6 or Comparative Example 1 are cured. Was produced.
As the test piece of Comparative Example 2, a polytetrafluoroethylene plate material cut out to the same size as the test piece was used.
＜摩擦特性試験＞
リングオンプレート摩擦試験機を使用し、試験条件は以下とした。
荷重ｗ：５０Ｎ
接触面積Ａ：１００ｍｍ２
接触圧ｐ＝ｗ／Ａ：０．５ＭＰａ
摺動速度（回転速度）Ｖ：０．００５ｍ／ｓ又は０．０２５ｍ／ｓ
総摺動距離：１２５ｍ
総摺動時間：６．９５時間又は１．３９時間
試験片を、空気静圧軸受により指示されたエアシリンダに取り付け、相手材はステンレス鋼（ＳＵＳ４２０Ｊ２、真空焼き入れしたもの）を使用した。
エアシリンダへの空気圧を調整することにより、試験片に任意の荷重を負荷し、相手材の軸回転時に試験片に加わる摩擦力は、トルクアームとロードセルにより測定した。
<Friction property test>
A ring-on-plate friction tester was used, and the test conditions were as follows.
Load w: 50N
Contact area A: 100 mm 2
Contact pressure p = w / A: 0.5 MPa
Sliding speed (rotation speed) V: 0.005 m / s or 0.025 m / s
Total sliding distance: 125m
Total sliding time: 6.95 hours or 1.39 hours The test piece was attached to an air cylinder indicated by an aerostatic bearing, and stainless steel (SUS420J2, vacuum-quenched) was used as the mating material.
An arbitrary load was applied to the test piece by adjusting the air pressure to the air cylinder, and the frictional force applied to the test piece when the shaft of the mating material was rotated was measured by a torque arm and a load cell.
実施例１〜３、並びに、比較例１及び２の試験片を用いて、前記摩擦特性試験を摺動速度０．００５ｍ／ｓで行った際の摩擦係数の推移結果を図１に示す。
漆のみの比較例１の試験片では、摩擦係数は０．６程度であり、一方、実施例１、実施例２、実施例３の順で試験片の摩擦係数が減少し、実施例３の試験片では、摩擦係数が０．２弱であり、ＰＴＦＥ１００質量％である比較例２の試験片の摩擦係数に近い値であった。
また、実施例４〜６の試験片を用い、前記摩擦特性試験を摺動速度０．００５ｍ／ｓで行った結果、実施例４〜６の試験片の摩擦係数は、いずれも約０．１であった。
FIG. 1 shows the transition results of the friction coefficient when the friction property test was performed at a sliding speed of 0.005 m / s using the test pieces of Examples 1 to 3 and Comparative Examples 1 and 2.
In the test piece of Comparative Example 1 containing only lacquer, the friction coefficient was about 0.6, while the friction coefficient of the test piece decreased in the order of Example 1, Example 2, and Example 3, and that of Example 3. In the test piece, the friction coefficient was a little less than 0.2, which was close to the friction coefficient of the test piece of Comparative Example 2 which was 100% by mass of PTFE.
Further, as a result of conducting the friction property test at a sliding speed of 0.005 m / s using the test pieces of Examples 4 to 6, the friction coefficient of the test pieces of Examples 4 to 6 was about 0.1. Met.
更に、実施例１〜３、並びに、比較例１及び２の試験片を用いて、前記摩擦特性試験を摺動速度０．０２５ｍ／ｓで行った際の摩擦係数の推移結果を図２に示す。
漆のみの比較例１の試験片では、摩擦係数は０．５程度であり、一方、実施例１、実施例２、実施例３の順で試験片の摩擦係数が減少し、実施例３の試験片では、摩擦係数が０．１０〜０．１６であり、ＰＴＦＥ１００質量％である比較例２の試験片の摩擦係数に近い値であった。
また、実施例４〜６の試験片を用い、前記摩擦特性試験を摺動速度０．０２５ｍ／ｓで行った結果、実施例４の試験片の摩擦係数は０．１０前後であり、実施例５の試験片の摩擦係数は０．１２前後であり、実施例６の試験片の摩擦係数は０．１５前後であった。
Further, FIG. 2 shows the transition results of the friction coefficient when the friction characteristic test was performed at a sliding speed of 0.025 m / s using the test pieces of Examples 1 to 3 and Comparative Examples 1 and 2. ..
The coefficient of friction of the test piece of Comparative Example 1 containing only lacquer was about 0.5, while the coefficient of friction of the test piece decreased in the order of Example 1, Example 2, and Example 3, and that of Example 3. In the test piece, the friction coefficient was 0.10 to 0.16, which was close to the friction coefficient of the test piece of Comparative Example 2 in which the PTFE was 100% by mass.
Further, as a result of conducting the friction characteristic test at a sliding speed of 0.025 m / s using the test pieces of Examples 4 to 6, the friction coefficient of the test piece of Example 4 was around 0.10, and the example. The coefficient of friction of the test piece of Example 5 was around 0.12, and the coefficient of friction of the test piece of Example 6 was around 0.15.
＜耐摩耗性試験＞
前記摩擦特性試験後の試験片表面を、（株）キーエンス製ＶＲ−３０５０三次元測定機及びＶＫ−１５０レーザー顕微鏡により撮影した画像から、試験片における摩耗量を算出した。摩耗量の算出は、前記摩擦特性試験時に摺動された部分の面と、摺動されていない部分の面との高さの差を測定により求めた。
<Abrasion resistance test>
The amount of wear on the test piece was calculated from the images of the surface of the test piece after the friction property test taken by a VR-3050 coordinate measuring machine manufactured by KEYENCE CORPORATION and a VK-150 laser microscope. The amount of wear was calculated by measuring the difference in height between the surface of the sliding portion and the surface of the non-sliding portion during the friction characteristic test.
比較例２の試験片の摩耗量は、前記摩擦特性試験を摺動速度０．０２５ｍ／ｓで行った場合は２３μｍであり、前記摩擦特性試験を摺動速度０．００５ｍ／ｓで行った場合は１３μｍであった。
一方、実施例１〜６、及び、比較例１の試験片の摩耗量は、摺動速度０．０２５ｍ／ｓ又は０．００５ｍ／ｓのいずれの場合であっても、１μｍ未満であった。
The amount of wear of the test piece of Comparative Example 2 is 23 μm when the friction characteristic test is performed at a sliding speed of 0.025 m / s, and when the friction characteristic test is performed at a sliding speed of 0.005 m / s. Was 13 μm.
On the other hand, the amount of wear of the test pieces of Examples 1 to 6 and Comparative Example 1 was less than 1 μm regardless of the sliding speed of 0.025 m / s or 0.005 m / s.
前記摩擦特性試験及び耐摩耗性試験の結果より、実施例１〜６の試験片（摺動部材）は、摩擦係数が小さく、かつ、耐摩耗性に優れており、摩擦特性及び耐摩耗性に優れるものであった。 From the results of the friction characteristics test and the wear resistance test, the test pieces (sliding members) of Examples 1 to 6 have a small coefficient of friction and are excellent in wear resistance, and have excellent friction characteristics and wear resistance. It was excellent.
（実施例７〜１２、並びに、比較例３）
＜耐薬品性試験片の調製＞
実施例１〜６の摺動組成物をそれぞれ用い、１５ｍｍ角、厚さ０．５ｍｍの試験片となるように、高温乾燥炉にて２００℃で１２時間加熱し、摺動組成物を硬化させ、実施例７〜１２の耐薬品性試験片をそれぞれ得た。
また、比較例３の耐薬品性試験片を、紙フェノール（フェノール樹脂を紙に含浸させ固めたもの）を１５ｍｍ角に裁断して作製した。
実施例７〜１２、及び、比較例３の耐薬品性試験片をそれぞれ、キッチンハイター（花王（株）製、次亜塩素酸ナトリウム６質量％含有液体）に、室温（２５℃）で４８時間浸漬させた。
浸漬させた耐薬品性試験片をキッチンハイターより取り出し、目視により変色の有無を確認した。
実施例７〜１２の耐薬品性試験片については、いずれも変色が見られなかった。
一方、比較例３の耐薬品性試験片は、顕著な変色が見られ、また、試験片表面が脆化していることが確認された。
(Examples 7 to 12 and Comparative Example 3)
<Preparation of chemical resistance test piece>
Using the sliding compositions of Examples 1 to 6, respectively, the sliding compositions were cured by heating at 200 ° C. for 12 hours in a high-temperature drying oven so as to form a test piece having a size of 15 mm square and a thickness of 0.5 mm. , Chemical resistance test pieces of Examples 7 to 12 were obtained respectively.
Further, the chemical resistance test piece of Comparative Example 3 was prepared by cutting paper phenol (paper impregnated with phenol resin and hardened) into 15 mm squares.
The chemical resistance test pieces of Examples 7 to 12 and Comparative Example 3 were placed in a kitchen highter (manufactured by Kao Corporation, a liquid containing 6% by mass of sodium hypochlorite) at room temperature (25 ° C.) for 48 hours. Soaked.
The soaked chemical resistance test piece was taken out from the kitchen highter, and the presence or absence of discoloration was visually confirmed.
No discoloration was observed in any of the chemical resistance test pieces of Examples 7 to 12.
On the other hand, it was confirmed that the chemical resistance test piece of Comparative Example 3 showed remarkable discoloration and the surface of the test piece was brittle.
前記摩擦特性試験及び耐摩耗性試験の結果より、実施例１〜６の摺動組成物を硬化させた硬化物は、耐薬品性に優れるものであった。 From the results of the friction property test and the abrasion resistance test, the cured product obtained by curing the sliding compositions of Examples 1 to 6 was excellent in chemical resistance.
Claims (8)
固体潤滑剤を含有し、
前記固体潤滑剤の材質が、フッ素樹脂、（変性）ポリオレフィン、シリコーン、黒鉛、二硫化モリブデン、二硫化タングステン、酸化亜鉛、メタケイ酸カルシウム、有機繊維及び液晶ポリエステルよりなる群から選ばれた少なくとも１種である
摺動組成物。 At least one compound selected from the group consisting of urushiol, laccol, and thithiol, and
Contains solid lubricant ,
The material of the solid lubricant is at least one selected from the group consisting of fluororesin, (modified) polyolefin, silicone, graphite, molybdenum disulfide, tungsten disulfide, zinc oxide, calcium metasilicate, organic fiber and liquid crystal polyester. A sliding composition that is.
塗布された前記摺動組成物を硬化させる硬化工程を含む
摺動部材の製造方法。 A coating step of applying the sliding composition according to any one of claims 1 to 5 to at least a part of the surface of the base material, and
A method for manufacturing a sliding member, which comprises a curing step of curing the applied sliding composition.
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