JP4932884B2 - 摺動部材用被膜組成物 - Google Patents
摺動部材用被膜組成物 Download PDFInfo
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- JP4932884B2 JP4932884B2 JP2009222795A JP2009222795A JP4932884B2 JP 4932884 B2 JP4932884 B2 JP 4932884B2 JP 2009222795 A JP2009222795 A JP 2009222795A JP 2009222795 A JP2009222795 A JP 2009222795A JP 4932884 B2 JP4932884 B2 JP 4932884B2
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Images
Classifications
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C10M2201/041—Carbon; Graphite; Carbon black
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C10M2201/05—Metals; Alloys
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C10M2201/066—Molybdenum sulfide
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C—CHEMISTRY; METALLURGY
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C10M2217/0443—Polyamides used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2221/00—Organic macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
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- C10M2221/0405—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
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- C10N2020/01—Physico-chemical properties
- C10N2020/055—Particles related characteristics
- C10N2020/06—Particles of special shape or size
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/023—Multi-layer lubricant coatings
- C10N2050/025—Multi-layer lubricant coatings in the form of films or sheets
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Lubricants (AREA)
- Paints Or Removers (AREA)
Description
バインダー樹脂は特に限定されず、従来から摺動部材用組成物のバインダー樹脂として使用されている公知の樹脂を使用できる。後述のように、固体潤滑剤の配合量が抑えられているので、必ずしも特定のバインダー樹脂によって被膜の強度を担保する必要は無いからである。例えば、ポリアミドイミド樹脂、ポリビニルブチラール、塩素化ポリオレフィン樹脂、ナイロン、ポリエーテルイミド、ポリエーテルサルホン、熱可塑性ポリイミドなどの熱可塑性樹脂や、アルキド樹脂、エポキシ樹脂、アミノ樹脂、アクリル樹脂、ポリアミノアミド樹脂、ポリウレタン樹脂、不飽和ポリエステル樹脂、フェノール樹脂、キシレン樹脂、ビニルエステル樹脂、フラン樹脂、シリコーン樹脂、ポリイミド、全芳香族ポリエステルなどの熱硬化性樹脂を例示できる。熱可塑性樹脂の中では、ポリアミドイミド樹脂、ポリビニルブチラール、ポリエーテルサルホン、熱可塑性ポリイミドが好ましく、熱硬化性樹脂の中では、エポキシ樹脂、アミノ樹脂、アクリル樹脂、ポリアミノアミド樹脂、ポリウレタン樹脂、不飽和ポリエステル樹脂、フェノール樹脂、キシレン樹脂、シリコーン樹脂、ポリイミドが好ましい。これらは取り扱いが容易で、板状摩耗抑制材を良好に分散させながら塗料状態で被膜を形成できるからである。さらには、接着性、耐薬品性、強度などの点から、ポリアミドイミド樹脂、ポリエーテルサルホン、熱可塑性ポリイミド、エポキシ樹脂、又はポリイミド樹脂がより好ましい。被膜を形成するに際しての塗装作業性と摩擦による発熱に対する耐熱性の必要性の観点から、ポリアミドイミド樹脂が最も好ましく、次いで、ポリエーテルサルホン、熱可塑性ポリイミドが好ましい。
摩耗抑制材としては、モース硬度が6以上である種々の板状無機微粒子を用いることができる。例えば、酸化アルミニウム、水酸化アルミニウム、アルミナホワイト、シリカアルミナなどのアルミナ類のほか,ジルコニア,炭化タングステン,炭化チタン,炭化ケイ素,二酸化チタン,酸化鉄,長石,軽石,正長石,イリジウム,石英,シリカ,酸化ベリリウム,酸化ジルコニウム,クロム,ボロンカーバイト,タングステンカーバイト,シリコーンカーバイト,ダイヤモンド等が挙げられる。これらの摩耗抑制材は、1種のみを単独で使用してもよいし、2種以上を混合使用してもよい。また、2種以上が複合化されたものや、何らかの表面処理、表面改質されたものでもよい。モース硬度が6以上であると、被膜に良好な硬度が付与され、耐摩耗性や耐焼付き性等が向上する。中でも、モース硬度が9であるアルミナ類が好ましい。アルミナ類は、例えばエンジンのピストンスカートの摺動面のように、潤滑油の存在下で相手材の金属面と摺動する面に被膜を形成する場合に、特に適している。
固体潤滑剤としては特に限定されず、従来から摺動部材用被膜組成物において使用されている公知の固体潤滑剤を使用することができる。例えば、ポリテトラフルオロチエチレン(PTFE),テトラフルオロエチレン-パーフルオロアルキルビニルエーテル共重合体,テトラフルオロエチレン-ヘキサフルオロフロピレン共重合体,テトラフルオロエチレン-エチレン共重合体,ポリビニリデンフルオライド及びポリクロロトリフルオロチレン等のフッ素化合物のほか,二硫化モリブデン(MoS2)及び二硫化タングステン(WS2)等の硫化物や,黒鉛(グラファイト),フッ化黒鉛,窒化硼素,マイカ等の層状鱗片状物質や,鉛,亜鉛,銅等の軟質金属や,メラミンシアヌレート等が挙げられる。中でも、ポリテトラフルオロエチレン、二硫化モリブデン、二硫化タングステン、黒鉛が特に好ましい。これらは1種のみを単独で使用しても良く、2種以上を混合使用してもよい。
本発明の組成物は、バインダー樹脂を溶剤で溶解するなど低粘度化し、一般的な塗装方法により、公知の塗装方法を採用することができる。先ずバインダー樹脂を有機溶剤により溶解する。有機溶剤は、バインダー樹脂を溶解することができる有機溶媒であれば特に制限なく用いることができる。代表的な樹脂で例示すると、エポキシ樹脂の場合、メチルエチルケトン等のケトン系溶剤、酢酸エチル等のエステル系溶剤、キシレン、トルエン等の芳香族系の溶剤などを用いることができる。ポリアミドイミド樹脂の場合、NMP(N−メチル−2−ピロリドン)を用いることができ、また、NMPにキシレン等の芳香族系溶剤や、メチルエチルケトン等のケトン系溶剤、酢酸エチル等のエステル系溶剤を加えた混合溶剤を用いることができる。次に、バインダー樹脂を溶解した溶液に板状アルミナと固体潤滑剤、その他添加剤等を加え、ボールミルなどの分散機で配合される各種粉体を適切な分散状態になるまで分散させて、本実施例の摺動部材用組成物を調整することができる。
バインダー樹脂としてポリアミドイミド樹脂を、摩耗抑制材として平均粒子径5μm、アスペクト比20〜30の板状アルミナを、固体潤滑剤としてPTFEを用い、表1に示す配合とした試験用の組成物1〜30を調製し、特許文献1より厳しい試験条件下での組成物1〜30における耐摩耗性、耐焼付き性、被膜強度について評価した。その結果も表1に示す。なお、表1において含有量を示す数値は、重量部である。
図1に示すスラスト試験機1(エーアンドデイ社製)を用いて焼付き荷重を測定した。被膜形成対象である摺動部材として、板形状の試験板16(t3×30×30mm,材質AC8A,粗さRz=0.5μm)を用いた。図1で見て試験板16の上面(第一摺動面14)には、前処理として溶剤脱脂を施した。この第一摺動面14に、各組成物をスプレーで塗付し、乾燥(180℃,90分)させて被膜を形成した。被膜の膜厚は10μmとした。本試験では、試験板16の表面粗さがRz=0.5μmであり、特許文献1のRz=1.0μmに比較し、接着性が確保され難く、被膜の剥離が発生し易く、厳しい条件であると判断できる。
◎:被膜が残存しており、基材が全く露出していない
○:被膜は殆ど残存しており、基材の露出は殆ど無い
△:被膜の一部が剥離している
×:焼き付いて被膜が全く残存していない
図2に示すブロックオンリング試験機2(FALEX LFW−1,FALEX CORPORATION製)を用いて、被膜の耐摩耗性を評価した。被膜形成対象である摺動部材として、ブロック状の試験材22(6×16×10mm,材質AC8A,表面粗さRz=1μm)を用いた。図2で見て試験材22の下面(第二摺動面24)には、前処理として溶剤脱脂を施した。この第二摺動面24に、各試験用組成物をスプレーで塗付したのち、乾燥(180℃,90分)させて被膜を形成した。被膜の膜厚は10μmとした。
◎:被膜の摩耗量が5μm未満
○:被膜が残存している
×:被膜の残存が認められない
固体潤滑剤としてPTFEを用いた評価試験1に続いて、固体潤滑剤として二硫化モリブデン(MoS2)を用いた組成物31〜55を調製し、評価試験1と同じ条件・同じ評価項目で評価試験2を行った。評価試験2で使用した組成物31〜55の組成とその試験結果を表2に示す。なお、表2においても、含有量を示す数値は重量部である。
2 ブロックオンリング試験機
12 第一相手材
14 第一摺動面
16 試験板
22 試験材
24 第二摺動面
26 第二相手材
Claims (3)
- 摺動部材の表面に被膜を形成するための摺動部材用被膜組成物であって、
バインダー樹脂と、
平均粒子径/平均粒子厚みで表されるアスペクト比が5〜100の板状であり、平均粒子径が15.0μm以下で、モース硬度が6以上である摩耗抑制材と、を含有し、
前記摩耗抑制材の含有量が、前記バインダー樹脂100重量部に対して1〜100重量部であり、
前記バインダー樹脂100重量部に対して、固体潤滑剤を0〜15重量部含有することを特徴とする、摺動部材用被膜組成物。 - 請求項1に記載の摺動部材用組成物であって、
前記摩耗抑制材はアルミナ類である、摺動部材用被膜組成物。 - 請求項1ないし請求項3のいずれかに記載の摺動部材用組成物であって、
前記摺動部材が、潤滑油の存在下で相手材と摺動する摺動部材である、摺動部材用被膜組成物。
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JP2009222795A JP4932884B2 (ja) | 2009-05-01 | 2009-09-28 | 摺動部材用被膜組成物 |
US13/266,810 US20120101011A1 (en) | 2009-05-01 | 2010-04-27 | Sliding Member Coating Composition |
PCT/JP2010/057447 WO2010126035A1 (ja) | 2009-05-01 | 2010-04-27 | 摺動部材用被膜組成物 |
EP10769733.6A EP2426190A4 (en) | 2009-05-01 | 2010-04-27 | FILM COMPOSITION FOR SLIDING ELEMENT |
CN2010800279518A CN102459544A (zh) | 2009-05-01 | 2010-04-27 | 滑动构件用涂层组合物 |
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JP2009112342 | 2009-05-01 | ||
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JP2009222795A JP4932884B2 (ja) | 2009-05-01 | 2009-09-28 | 摺動部材用被膜組成物 |
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US (1) | US20120101011A1 (ja) |
EP (1) | EP2426190A4 (ja) |
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WO (1) | WO2010126035A1 (ja) |
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2009
- 2009-09-28 JP JP2009222795A patent/JP4932884B2/ja active Active
-
2010
- 2010-04-27 WO PCT/JP2010/057447 patent/WO2010126035A1/ja active Application Filing
- 2010-04-27 CN CN2010800279518A patent/CN102459544A/zh active Pending
- 2010-04-27 US US13/266,810 patent/US20120101011A1/en not_active Abandoned
- 2010-04-27 EP EP10769733.6A patent/EP2426190A4/en not_active Withdrawn
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RU2788089C1 (ru) * | 2022-08-15 | 2023-01-16 | Алексей Игоревич Буянов | Антифрикционное твердосмазочное полимерное покрытие |
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EP2426190A1 (en) | 2012-03-07 |
EP2426190A4 (en) | 2016-03-16 |
WO2010126035A1 (ja) | 2010-11-04 |
CN102459544A (zh) | 2012-05-16 |
JP2010280879A (ja) | 2010-12-16 |
US20120101011A1 (en) | 2012-04-26 |
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