JP2011079921A - 摺動用樹脂組成物 - Google Patents
摺動用樹脂組成物 Download PDFInfo
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- JP2011079921A JP2011079921A JP2009232084A JP2009232084A JP2011079921A JP 2011079921 A JP2011079921 A JP 2011079921A JP 2009232084 A JP2009232084 A JP 2009232084A JP 2009232084 A JP2009232084 A JP 2009232084A JP 2011079921 A JP2011079921 A JP 2011079921A
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- 239000011342 resin composition Substances 0.000 title claims abstract description 68
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 200
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 200
- 239000002245 particle Substances 0.000 claims abstract description 86
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 40
- 239000000057 synthetic resin Substances 0.000 claims abstract description 40
- 230000015572 biosynthetic process Effects 0.000 claims description 47
- 239000000314 lubricant Substances 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000012546 transfer Methods 0.000 abstract description 24
- 230000007423 decrease Effects 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 18
- 239000001506 calcium phosphate Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 17
- 229910000389 calcium phosphate Inorganic materials 0.000 description 16
- 235000011010 calcium phosphates Nutrition 0.000 description 16
- 229910052751 metal Inorganic materials 0.000 description 16
- 239000002184 metal Substances 0.000 description 16
- 238000012360 testing method Methods 0.000 description 13
- 239000000843 powder Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- 229920002312 polyamide-imide Polymers 0.000 description 11
- 238000002156 mixing Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000004898 kneading Methods 0.000 description 7
- 230000013011 mating Effects 0.000 description 7
- 238000000465 moulding Methods 0.000 description 7
- 238000010557 suspension polymerization reaction Methods 0.000 description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 239000004962 Polyamide-imide Substances 0.000 description 6
- 150000008064 anhydrides Chemical class 0.000 description 6
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 6
- 230000001737 promoting effect Effects 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 150000002484 inorganic compounds Chemical class 0.000 description 5
- 229910010272 inorganic material Inorganic materials 0.000 description 5
- 229910001386 lithium phosphate Inorganic materials 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 5
- -1 polytetrafluoroethylene Polymers 0.000 description 5
- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 0.000 description 5
- 239000004693 Polybenzimidazole Substances 0.000 description 4
- 239000004642 Polyimide Substances 0.000 description 4
- 239000004809 Teflon Substances 0.000 description 4
- 229920006362 Teflon® Polymers 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 229920002480 polybenzimidazole Polymers 0.000 description 4
- 229920001721 polyimide Polymers 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 239000002671 adjuvant Substances 0.000 description 3
- WAKZZMMCDILMEF-UHFFFAOYSA-H barium(2+);diphosphate Chemical compound [Ba+2].[Ba+2].[Ba+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O WAKZZMMCDILMEF-UHFFFAOYSA-H 0.000 description 3
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- JUNWLZAGQLJVLR-UHFFFAOYSA-J calcium diphosphate Chemical compound [Ca+2].[Ca+2].[O-]P([O-])(=O)OP([O-])([O-])=O JUNWLZAGQLJVLR-UHFFFAOYSA-J 0.000 description 3
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 description 3
- ROPDWRCJTIRLTR-UHFFFAOYSA-L calcium metaphosphate Chemical compound [Ca+2].[O-]P(=O)=O.[O-]P(=O)=O ROPDWRCJTIRLTR-UHFFFAOYSA-L 0.000 description 3
- 229940043256 calcium pyrophosphate Drugs 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 235000019821 dicalcium diphosphate Nutrition 0.000 description 3
- 235000019700 dicalcium phosphate Nutrition 0.000 description 3
- MHJAJDCZWVHCPF-UHFFFAOYSA-L dimagnesium phosphate Chemical compound [Mg+2].OP([O-])([O-])=O MHJAJDCZWVHCPF-UHFFFAOYSA-L 0.000 description 3
- 229910000395 dimagnesium phosphate Inorganic materials 0.000 description 3
- XZTWHWHGBBCSMX-UHFFFAOYSA-J dimagnesium;phosphonato phosphate Chemical compound [Mg+2].[Mg+2].[O-]P([O-])(=O)OP([O-])([O-])=O XZTWHWHGBBCSMX-UHFFFAOYSA-J 0.000 description 3
- BDAGIHXWWSANSR-NJFSPNSNSA-N hydroxyformaldehyde Chemical compound O[14CH]=O BDAGIHXWWSANSR-NJFSPNSNSA-N 0.000 description 3
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 3
- 229910052808 lithium carbonate Inorganic materials 0.000 description 3
- MRVHOJHOBHYHQL-UHFFFAOYSA-M lithium metaphosphate Chemical compound [Li+].[O-]P(=O)=O MRVHOJHOBHYHQL-UHFFFAOYSA-M 0.000 description 3
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 3
- 239000001095 magnesium carbonate Substances 0.000 description 3
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 3
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 description 3
- 239000004137 magnesium phosphate Substances 0.000 description 3
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 3
- 229960002261 magnesium phosphate Drugs 0.000 description 3
- 235000010994 magnesium phosphates Nutrition 0.000 description 3
- RHJYKEDKMHDZBL-UHFFFAOYSA-L metaphosphoric acid (hpo3), magnesium salt Chemical compound [Mg+2].[O-]P(=O)=O.[O-]P(=O)=O RHJYKEDKMHDZBL-UHFFFAOYSA-L 0.000 description 3
- 235000021317 phosphate Nutrition 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 229910000018 strontium carbonate Inorganic materials 0.000 description 3
- MVGWWCXDTHXKTR-UHFFFAOYSA-J tetralithium;phosphonato phosphate Chemical compound [Li+].[Li+].[Li+].[Li+].[O-]P([O-])(=O)OP([O-])([O-])=O MVGWWCXDTHXKTR-UHFFFAOYSA-J 0.000 description 3
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 229930182556 Polyacetal Natural products 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000004135 Bone phosphate Substances 0.000 description 1
- 229920006358 Fluon Polymers 0.000 description 1
- 241000357293 Leptobrama muelleri Species 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910000394 calcium triphosphate Inorganic materials 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004453 electron probe microanalysis Methods 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- RFWLACFDYFIVMC-UHFFFAOYSA-D pentacalcium;[oxido(phosphonatooxy)phosphoryl] phosphate Chemical compound [Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O.[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O RFWLACFDYFIVMC-UHFFFAOYSA-D 0.000 description 1
- WCGOOOYCJYHLRW-UHFFFAOYSA-I pentalithium;[oxido(phosphonatooxy)phosphoryl] phosphate Chemical compound [Li+].[Li+].[Li+].[Li+].[Li+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O WCGOOOYCJYHLRW-UHFFFAOYSA-I 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910000391 tricalcium phosphate Inorganic materials 0.000 description 1
- 235000019731 tricalcium phosphate Nutrition 0.000 description 1
- 229940078499 tricalcium phosphate Drugs 0.000 description 1
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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
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/065—Sulfides; Selenides; Tellurides
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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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/065—Sulfides; Selenides; Tellurides
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/08—Inorganic acids or salts thereof
- C10M2201/084—Inorganic acids or salts thereof containing sulfur, selenium or tellurium
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- C10M2201/085—Phosphorus oxides, acids or salts
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- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
- C10M2213/062—Polytetrafluoroethylene [PTFE]
- C10M2213/0623—Polytetrafluoroethylene [PTFE] used as base material
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- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
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Abstract
【解決手段】 PTFE膜形成助剤4を表面に埋収したPTFE3の粒子が合成樹脂2中に分散された状態の樹脂組成物1を用いることにより、樹脂組成物1の摺動面におけるPTFE3の粒表面が相手軸の表面に接触するとき、その接触部にはPTFE膜形成助剤4も存在している。このため、相手軸の表面へのPTFE3の移着が促進され、摩擦係数が低下する時間の短時間化が可能となる。
【選択図】 図1
Description
イミダゾール、ポリエチレン、ポリプロピレン、ポリエーテルエーテルケトン、ポリフェニレンサルフィド、ポリアミド、ポリアセタール等の一般的な合成樹脂を用いることができる。合成樹脂の種類は、相手材の表面へのPTFEの移着性には直接は関係しないので任意の合成樹脂を用いることができるが、特に、ポリイミド、ポリアミドイミド、ポリベンゾイミダゾール等の合成樹脂は、耐熱性や強度が高く、高負荷条件で使用される摺動用樹脂組成物に好適である。なお、摺動用樹脂組成物に対するPTFEの含有量は10〜40質量%、PTFE膜形成助剤の含有量は5〜15質量%が望ましいが、摺動条件やPTFE膜形成助剤の種類により含有量を調整することができる。
の表面にPTFEが移着し難い。また、先行技術1のように合成樹脂からなるバインダー樹脂中にPTFEの粒子とPTFE膜形成助剤とを均一に分散させた樹脂組成物を用いた場合、PTFEの粒表面の剪断片(摩耗粉)が発生した箇所でPTFE膜形成助剤が存在する確率が本発明に比べて低く、PTFEの粒表面の剪断片と合成樹脂の表面から剪断されたPTFE膜形成助剤とが相互に作用をすることなく、個々に摺動面外へ排出される頻度が高いため、迅速に相手材の表面にPTFEの移着膜を形成し難い。
3の粒表面に埋収されている必要はなく、一部は単独で合成樹脂2中に分散していてもよい。また、摺動用樹脂組成物1において、全てのPTFE3の粒表面にPTFE膜形成助剤4が埋収されている状態が最も望ましく、PTFE3の粒子とPTFE膜形成助剤4の混合、混練する時間を長くすれば成しえるが、生産性が低くなる。PTFE3の粒子とPTFE膜形成助剤4の混合、混練する時間を短時間にして生産性を高める場合には、一部のPTFE3の粒子には表面にPTFE膜形成助剤4が埋収されていなくてもよい。具体的には、樹脂組成物1に含有するPTFE3のうち、少なくとも50%を超えるPTFE3の粒表面にPTFE膜形成助剤4が埋収されていれば、相手材の表面へのPTFE3の移着を助長する効果があることを本発明者は確認している。
径が5μmのリン酸カルシウムを用いた。また、実施例2の固体潤滑剤には、二硫化モリブデンを用いた。
成物1の組成を調整することができる。本発明者は、樹脂組成物1中におけるPTFE3の粒子の含有量を10〜40質量%、PTFE膜形成助剤4の含有量を5〜15質量%の範囲で組成することにより、樹脂組成物1が同一の組成であれば、PTFE3の粒表面にPTFE膜形成助剤4を埋収させた場合には、埋収させてない場合と比べて相手軸の表面へのPTFE3の移着が促進され、摩擦係数が低下する時間が短くなることを確認している。また、本発明者は、樹脂組成物1を構成する合成樹脂2が本実施形態で用いたPAIに限定されず、他の種類の合成樹脂2を用いても、本発明の効果が得られることを確認している。
2 合成樹脂
3 PTFE
4 PTFE膜形成助剤
Claims (4)
- 合成樹脂に固体潤滑剤としてPTFEとPTFE膜形成助剤とを含有させた摺動用樹脂組成物において、
前記合成樹脂には、前記PTFEを粒状で分散させ、
前記PTFEの粒表面には、前記PTFE膜形成助剤を埋収させていることを特徴とする摺動用樹脂組成物。 - 前記PTFEの粒表面における前記PTFE膜形成助剤の面積率は、5〜30%の範囲であることを特徴とする請求項1記載の摺動用樹脂組成物。
- 前記PTFE膜形成助剤の平均粒径は、前記PTFEの平均粒径の1/3以下であることを特徴とする請求項1又は請求項2記載の摺動用樹脂組成物。
- 前記合成樹脂には、さらに前記固体潤滑剤として二硫化モリブデン、二硫化タングステン、黒鉛のいずれか一種以上を含有させることを特徴とする請求項1乃至請求項3のいずれかに記載の摺動用樹脂組成物。
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