WO2010010789A1 - 導電性グリース - Google Patents
導電性グリース Download PDFInfo
- Publication number
- WO2010010789A1 WO2010010789A1 PCT/JP2009/061745 JP2009061745W WO2010010789A1 WO 2010010789 A1 WO2010010789 A1 WO 2010010789A1 JP 2009061745 W JP2009061745 W JP 2009061745W WO 2010010789 A1 WO2010010789 A1 WO 2010010789A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluorine
- conductive grease
- weight
- oil
- containing resin
- Prior art date
Links
Classifications
-
- 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
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
- C10M171/06—Particles of special shape or size
-
- 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
-
- 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
-
- 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
- C10M2201/0413—Carbon; Graphite; Carbon black used as base material
-
- 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
- C10M2201/10—Compounds containing silicon
- C10M2201/105—Silica
- C10M2201/1056—Silica used as thickening agents
-
- 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
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
-
- 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
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
- C10M2213/0606—Perfluoro polymers used as base material
-
- 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
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
- C10M2213/0613—Perfluoro polymers used as thickening agents
-
- 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
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
- C10M2213/062—Polytetrafluoroethylene [PTFE]
-
- 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
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
- C10M2213/062—Polytetrafluoroethylene [PTFE]
- C10M2213/0626—Polytetrafluoroethylene [PTFE] used as thickening agents
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/10—Amides of carbonic or haloformic acids
- C10M2215/102—Ureas; Semicarbazides; Allophanates
- C10M2215/1026—Ureas; Semicarbazides; Allophanates used as thickening material
-
- 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
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
-
- 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
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/04—Molecular weight; Molecular weight distribution
-
- 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
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/055—Particles related characteristics
- C10N2020/06—Particles of special shape or size
-
- 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
-
- 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
- C10N2030/08—Resistance to extreme temperature
-
- 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
- C10N2030/68—Shear stability
-
- 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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/02—Bearings
-
- 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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/06—Instruments or other precision apparatus, e.g. damping fluids
-
- 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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/14—Electric or magnetic purposes
-
- 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
- C10N2050/10—Semi-solids; greasy
Definitions
- the present invention relates to a conductive grease. More specifically, the present invention relates to a conductive grease composed of fluorine oil, a conductive substance, and a thickener.
- Patent Document 2 proposes a conductive grease in which a PTFE thickener and 0.2 to 10% by mass of carbon black are blended with a base oil such as fluorine oil.
- the DBP oil absorption amount and bearing resistance of the carbon black used are proposed.
- 180 ml / 100 g or more of the DBP oil absorption of 110 to 300 ml / 100 g is preferred.
- Patent Document 3 a grease composition containing 5 to 40% by weight of the total grease using synthetic oil and fluorine oil as a base oil and carbon black and PTFE as a thickener is proposed in Patent Document 3, and carbon black and PTFE thickener is used in a ratio of 20 to 60% by mass: 80 to 40% by mass, and carbon black having a DBP oil absorption of 100 ml / 100 g or more is used, but it is used There is no mention of the properties of the PTFE thickener.
- grease has a gel structure in which the base oil is incorporated into the gaps in the network structure formed by the entanglement of thickener molecules and crystals, so that the base oil is not applied under pressure (stress). Although it does not separate easily from the thickener, the base oil gradually leaks out of the network structure due to the mobility of the base oil itself even if it is allowed to stand naturally, and the base oil is separated (released). Come to come. Such an oil separation phenomenon occurs in a shorter time as the temperature increases and the oil separation degree is expressed as a function of temperature and time.
- An object of the present invention is to provide a conductive grease composed of a fluorine oil, a conductive substance and a thickener, which has excellent oil separation characteristics, that is, the oil separation degree is significantly reduced.
- An object of the present invention is to provide a fluorine-containing resin having 5 to 20% by weight of carbon black having a DBP oil absorption of 250 ml / 100 g or less as a conductive substance and an average primary particle size of 1.0 ⁇ m or less as a thickener in the conductive grease. This is achieved by conductive grease containing 2 to 15% by weight of particles.
- the conductive grease according to the present invention is excellent in oil separation characteristics, that is, it has excellent oil separation characteristics, that is, by using blended fluorine-containing resin particles having an average primary particle size of 1.0 ⁇ m or less, preferably PTFE particles, together with carbon black having specific properties.
- the oiliness can be significantly reduced, and the value can be 10% by weight or less.
- Fluorine oil used as the base oil has the general formula RfO (C 3 F 6 O) p (C 2 F 4 O) q (CF 2 O) rRf
- Rf is a perfluoro lower alkyl group having 1 to 5 carbon atoms such as a perfluoromethyl group and a perfluoroethyl group
- the C 3 F 6 O group, the C 2 F 4 O group and the CF 2 O group are random.
- p + q + r 2 to 200, and p, q or r may be 0.
- Specific examples of the polyether-based fluorine oil represented by such a general formula include the following.
- m is 2 to 200, which is obtained by anionic polymerization of hexafluoropropene oxide by completely fluorinating the precursor formed by photo-oxidation polymerization of hexafluoropropene or in the presence of a cesium fluoride catalyst.
- the obtained acid fluoride compound having a terminal —CF (CF 3 ) COF group is obtained by treating with a fluorine gas.
- Fluorine oils other than those represented by the above general formula can also be used.
- the following polyether-based fluorine oils are used.
- n 2 to 100, which is obtained by anionic polymerization of 2,2,3,3-tetrafluorooxetane in the presence of a cesium fluoride catalyst, and the resulting fluorine-containing polyether (CH 2 CF 2 CF 2 O) n can be obtained by treating with fluorine gas under ultraviolet irradiation at 160 to 300 ° C.
- the above fluorine oils mentioned as specific examples can be used singly or as a mixture, but from the viewpoint of cost performance, the fluorine oil (1) or (2) is preferably used.
- fluorine oils can be used with kinematic viscosities of any value, but are preferably 5 to 2000 mm 2 / sec (40 ° C) as a lubricant, and preferably 100 to 1500 mm 2 in consideration of use under high temperature conditions. Per second (40 ° C.). In other words, those with about 5 mm 2 / sec or less have a large evaporation amount and do not satisfy the condition of an evaporation amount of 1.5% or less stipulated in the JIS rolling bearing grease type 3 which is a standard for heat-resistant grease.
- the pour point JIS K-2283
- the bearing does not rotate at low temperature startup in the normal method. There is a need to. Therefore, the eligibility for use as a general grease is lacking.
- carbon black having a DBP oil absorption (according to ASTM D1765-91) of 250 ml / 100 g or less, preferably 150 ml / 100 g or less, more preferably 140 ml / 100 g or less is used. If a DBP oil absorption amount higher than this is used, even if a small amount is added, it will agglomerate and the grease will become hard, making it impossible to obtain good oil separation characteristics.
- the carbon black having such properties is used in an addition ratio that accounts for 5 to 20% by weight, preferably 5 to 15% by weight, more preferably 10 to 15% by weight in the conductive grease.
- the carbon black used at such a ratio ensures good electrical conductivity and oil separation characteristics, and at the same time makes the consistency of the grease appropriate. If the addition ratio is less than this, sufficient oil separation characteristics cannot be obtained. On the other hand, if the addition ratio is more than this, the grease composition becomes hard and the characteristics suitable for the application cannot be exhibited.
- fluorine-containing resin particles As fluorine-containing resin particles as a thickener, polytetrafluoroethylene [PTFE] particles, tetrafluoroethylene-perfluoro (alkyl vinyl ether) copolymer [PFA] particles, ethylene-tetrafluoroethylene polymer [ETFE] particles, Fluorine-containing resin particles such as hexafluoropropylene-tetrafluoroethylene copolymer [FEP] particles and polyvinylidene fluoride [PVDF] particles, preferably PTFE particles having an average primary particle size of 1.0 ⁇ m or less, preferably 0.1 to 0.5 ⁇ m is used.
- the average primary particle size is obtained as an average value obtained by measuring the particle size of 100 or more particles on a photograph observed with a scanning electron microscope. Note that secondary agglomerated particles formed by mutual agglomeration of particles are not included.
- PTFE is preferably synthesized by an emulsion polymerization method of tetrafluoroethylene, and has a number average molecular weight Mn of about 1,000 to 1,000,000 and an average primary particle size of about 500 ⁇ m or less.
- a number average molecular weight Mn of about 1,000 to 500,000 and an average primary particle size of 1.0 ⁇ m, preferably 0.1 to 0.5 ⁇ m, are selected and used by the beam irradiation method, ⁇ -ray irradiation method, physical grinding method, etc. It is done.
- Such PTFE particles have a melting point of about 250-400 ° C, preferably about 300-350 ° C.
- PTFE particles with an average primary particle size of 1.0 ⁇ m or more will lead to deterioration of oil separation characteristics at high temperatures, and expect sufficient improvement in scattering resistance and leakage resistance, longer life, and stable conductive characteristics. Can not. Further, such fluorine-containing resin particles such as PTFE particles are used in an addition ratio of 2 to 15% by weight, preferably 2 to 9% by weight, more preferably 3 to 7% by weight in the grease composition. If the addition ratio is lower than this, a sufficient oil separation inhibiting effect cannot be obtained, and it is not possible to expect sufficient improvement in scattering resistance and leakage resistance. On the other hand, if the addition ratio is higher than this, the oil separation characteristics are not improved. Not only is it not seen, but it tends to get worse.
- Thickeners other than fluorine-containing resin particles for example, minerals such as urea resin, silica, bentonite, organic pigments, polyethylene, polypropylene, polyamide, etc. can be used in combination with fluorine-containing resin particle thickeners, heat resistance and lubricity From this point, urea resins such as diurea, triurea and tetraurea or silica are desirable.
- conductive grease having such a basic composition known as used in conventional lubricants such as antioxidants, rust inhibitors, corrosion inhibitors, extreme pressure agents, oil agents, solid lubricants as necessary.
- An additive can be mix
- antioxidants examples include phenolic antioxidants such as 2,6-di-t-butyl-4-methylphenol and 4,4′-methylenebis (2,6-ditert-butylphenol), alkyldiphenylamine ( Alkyl groups having 4 to 20 carbon atoms), amine-based antioxidants such as triphenylamine, phenyl- ⁇ -naphthylamine, alkylated phenyl- ⁇ -naphthylamine, phenothiazine, alkylated phenothiazine, and the like. Or 2 or more types can be mixed and used.
- phenolic antioxidants such as 2,6-di-t-butyl-4-methylphenol and 4,4′-methylenebis (2,6-ditert-butylphenol)
- alkyldiphenylamine Alkyl groups having 4 to 20 carbon atoms
- amine-based antioxidants such as triphenylamine, phenyl- ⁇ -naphthylamine, al
- rust preventives include fatty acids, fatty acid soaps, alkyl sulfonates, fatty acid amines, oxidized paraffins, and polyoxyethylene alkyl ethers.
- corrosion inhibitor examples include benzotriazole, benzimidazole, thiadiazole and the like.
- extreme pressure agents include phosphorus compounds such as phosphate esters, phosphites and phosphate amine salts, sulfur compounds such as sulfides and disulfides, and chlorine compounds such as chlorinated paraffin and chlorinated diphenyl. And organometallic compounds such as zinc dialkyldithiophosphate and molybdenum dialkyldithiocarbamate.
- oily agent examples include fatty acids, higher alcohols, polyhydric alcohols, polyhydric alcohol esters, fatty acid esters, aliphatic amines, fatty acid monoglycerides and the like.
- examples of the solid lubricant include molybdenum disulfide, boron nitride, and silane nitride.
- the lubricating grease composition composed of the above components is prepared by blending a predetermined amount of a conductive substance, a thickener and necessary additives in fluorine oil, and sufficiently kneading with a three-roll or high-pressure homogenizer.
- the conductive grease according to the present invention is used for rolling bearings, slide bearings, and the like as grease that requires low oil separation and high electrostatic discharge function and high temperature durability. It is suitably used for a fixing roll bearing or the like. It is also used for bushings and contact parts of electrostatic transfer copying machines.
- conductivity is not so much required, it can also be used for lubrication applications that require heat resistance, lubricity, durability life, and the like, for example.
- Automobile Heat resistance and load resistance of electric radiator fan motor, fan coupling, electronic control EGR, electronic control throttle valve, alternator, idler pulley, electric brake, hub unit, water pump, power window, wiper, electric power steering, etc.
- Rolling bearings, slide bearings or gear parts that require high stability and shear stability.
- Electrical contact parts that require heat resistance, shear stability, and wear resistance, such as automatic transmission control switches, lever control switches, and push switches.
- Rubber seal parts that require heat resistance and shear stability, such as the X ring part of the viscous coupling and the O ring of the exhaust brake.
- Resin manufacturing equipment Rolling bearings, slide bearings, pins, oil seals, gears, etc.
- Papermaking equipment Rolling bearings, slide bearings, pins, oil seals, gears, etc. for corrugated machines that require heat resistance and load resistance.
- Wood processing equipment rolling bearings such as continuous presses, sliding bearings, pins, oil seals, gears, etc. that require heat resistance and load resistance.
- Food machinery Bread baking machines, linear guides for ovens, rolling bearings that require heat resistance and wear resistance.
- Others rolling bearings, gears, etc. in vacuum pumps such as semiconductor manufacturing equipment, liquid crystal manufacturing equipment, and electron microscopes.
- Rolling bearings for power control circuit breakers, automotive headlights, seats, ABS, door locks, door hinges, clutch boosters, two-part flywheels, window regulators, ball joints, clutch boosters, rolling bearings, plain bearings, gears, Sliding part etc.
- Rolling bearings, slide bearings, etc. for home appliances / information equipment, machine tool spindles or sabot motors. Mobile phone, personal computer hinge sliding part, etc.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
- Sliding-Contact Bearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
RfO(C3F6O)p(C2F4O)q(CF2O)rRf
で表わされるものが使用される。ここで、Rfはパーフルオロメチル基、パーフルオロエチル基など、炭素数1~5のパーフルオロ低級アルキル基であり、C3F6O基、C2F4O基およびCF2O基はランダムに結合しており、p+q+r=2~200で、p,qまたはrは0であり得る。このような一般式で表わされるポリエーテル系ふっ素油の具体例としては、以下のようなものがある。
ここで、mは2~200で、これはヘキサフルオロプロペンの光酸化重合で生成した先駆体を完全にふっ素化することにより、あるいはふっ化セシウム触媒の存在下にヘキサフルオロプロペンオキシドをアニオン重合させ、得られた末端-CF(CF3)COF基を有する酸フロリド化合物をふっ素ガス処理することにより得られる。
ここで、CF(CF3)CF2O基およびCF2O基はランダムに結合しており、m+n=3~200、m:n=(10:90)~(90:10)であり、これはヘキサフルオロプロペンの光酸化重合で生成した先駆体を完全にふっ素化することにより得られる。
ここで、m+n=3~200であり、m:n=(10:90)~(90:10)であり、これはテトラフルオロエチレンの光酸化重合で生成した先駆体を完全にふっ素化することにより得られる。
(4)F(CF2CF2CF2O)nCF2CF3
ここでn=2~100であり、これはふっ化セシウム触媒の存在下に2,2,3,3-テトラフルオロオキセタンをアニオン重合させ、得られた含ふっ素ポリエーテル(CH2CF2CF2O)nを160~300℃の紫外線照射下でふっ素ガス処理することにより得られる。具体例として挙げた以上のふっ素油は、単独もしくは混合して用いることができるが、コストパーフォーマンスの点からは、上記(1)または(2)のフッ素油が好んで用いられる。
4種類のフッ素油基油A~Dを用い、カーボンブラックとしてA~Cの3種類のものを用い、また増稠剤としてA~Dの4種類のものを用い、表の配合組成(単位:重量%)に示すように、実施例1~11および比較例1~5のグリースを調製した。
《基油》
A)RfO〔CF(CF3)CF2O〕mRf 動粘度(40℃) 400mm2/秒
B)RfO〔CF(CF3)CF2O〕mRf 動粘度(40℃) 230mm2/秒
C)RfO〔CF(CF3)CF2O〕mRf 動粘度(40℃) 100mm2/秒
D)RfO〔CF(CF3)CF2O〕m(CF2O)nRf 動粘度(40℃) 390mm2/秒
《カーボンブラック》
A)DBP吸油量 68ml/100g
B)DBP吸油量140ml/100g
C)DBP吸油量360ml/100g
《増稠剤》
A)ポリテトラフルオロエチレン
(乳化重合法、融点323~333℃、平均一次粒子径0.12μm)
B)ポリテトラフルオロエチレン
(乳化重合法、融点328~338℃、平均一次粒子径0.3μm)
C)ポリテトラフルオロエチレン
(懸濁重合法、融点320~330℃、平均一次粒子径約9μm)
D)ポリテトラフルオロエチレン
(懸濁重合法、融点313~323℃、平均一次粒子径約5μm)
得られたグリースについて、次のような試験を行った。
1)稠度試験
実施例1~11および比較例1~5の各導電性グリースについて、下記条件で稠度を測定した。
ASTM D217に対応するJIS K2220.5.7に準拠
25℃、60W
2)離油度の確認試験
実施例1~11および比較例1~5の各導電性グリースについて、下記条件で離油度(単位:重量%)を測定した。
《測定条件》
ASTM D6184に対応するJIS K2220.5.7に準拠
温度:250℃
時間:24時間
3)体積抵抗率の測定試験
実施例1~11および比較例1~5の各導電性グリースについて、10cm径の2枚の円板状電極間(間隙1mm)にグリースを挟み、30分後の抵抗値と試料厚さ、電極面積とから、次式により体積抵抗率を求めた。
ρv=Rv×(s/t)
ρv:体積抵抗率(単位:Ω・cm)
Rv:30分後の抵抗値(単位:Ω)
s:電極面積(単位:cm2)
t:試料厚さ(単位:cm)
自動変速機用コントロールスイッチ、レバーコントロールスイッチ、プッシュスイッチ等の耐熱性、せん断安定性、耐摩耗性が要求される電気接点部分。
ビスカスカップリングのXリング部分、排気ブレーキのOリング等、耐熱性、せん断安定性が要求されるゴムシール部分。
樹脂製造装置:フィルムテンター、フィルムラミネータ、バンバリーミキサ等の耐熱性、耐荷重性が要求される転がり軸受、すべり軸受、ピン、オイルシール、ギヤ等。
製紙装置:耐熱性、耐荷重性が要求されるコルゲートマシン等の転がり軸受、すべり軸受、ピン、オイルシール、ギヤ等。
木材加工装置:耐熱性、耐荷重性が要求されるコンチプレス等の転がり軸受、すべり軸受、ピン、オイルシール、ギヤ等。
食品用機械:パン焼器、オーブン等のリニアガイド、耐熱性、耐摩耗性が要求される転がり軸受等。
その他:半導体製造装置、液晶製造装置、電子顕微鏡等の真空ポンプにおける転がり軸受、ギヤ等。
電力制御装置の遮断機の転がり軸受、自動車のヘッドライト、シート、ABS、ドアロック、ドアヒンジ、クラッチブースタ、2分割フライホイール、ウィンドレギュレータ、ボールジョイント、クラッチブースタ等の転がり軸受、すべり軸受、ギヤ、摺動部等。
パーソナルコンピュータの冷却ファン、掃除機、洗濯機等の転がり軸受、すべり軸受、オイルシール等。
家電・情報機器、工作機械のスピンドルまたはサボモータ等の転がり軸受、すべり軸受等。
携帯電話、パーソナルコンピュータのヒンジ摺動部等。
Claims (11)
- フッ素油、導電性物質および増稠剤からなる導電性グリースにおいて、導電性物質としてDBP吸油量が250ml/100g以下のカーボンブラック5~20重量%および増稠剤として平均一次粒子径が1.0μm以下の含フッ素樹脂粒子2~15重量%をぞれぞれ配合してなる導電性グリース。
- DBP吸油量が150ml/100g以下のカーボンブラックが用いられた請求項1記載の導電性グリース。
- 含フッ素樹脂粒子がPTFE粒子である請求項1記載の導電性グリース。
- 平均一次粒子径が0.1~0.5μmのPTFE粒子が用いられた請求項3記載の導電性グリース。
- 含フッ素樹脂粒子が2~9重量%添加された請求項1記載の導電性グリース。
- 含フッ素樹脂粒子が2~9重量%添加された請求項3記載の導電性グリース。
- 含フッ素樹脂粒子が3~7重量%添加された請求項1記載の導電性グリース。
- 含フッ素樹脂粒子が3~7重量%添加された請求項3記載の導電性グリース。
- 転がり軸受またはすべり軸受に用いられる請求項1記載の導電性グリース。
- 静電転写複写機の感光ドラムおよび定着ロールの少くとも一方の軸受に用いられる請求項9記載の導電性グリース。
- 静電転写複写機のブッシュおよび/または接点部分に用いられる請求項1記載の導電性グリース。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010521658A JP5321587B2 (ja) | 2008-07-22 | 2009-06-26 | 導電性グリース |
CN200980128847.5A CN102105573B (zh) | 2008-07-22 | 2009-06-26 | 导电性润滑脂 |
US13/054,186 US8470748B2 (en) | 2008-07-22 | 2009-06-26 | Electroconductive grease |
DE112009001785.1T DE112009001785B4 (de) | 2008-07-22 | 2009-06-26 | Elektrisch leitendes Fett |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-188106 | 2008-07-22 | ||
JP2008188106 | 2008-07-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010010789A1 true WO2010010789A1 (ja) | 2010-01-28 |
Family
ID=41570255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/061745 WO2010010789A1 (ja) | 2008-07-22 | 2009-06-26 | 導電性グリース |
Country Status (5)
Country | Link |
---|---|
US (1) | US8470748B2 (ja) |
JP (1) | JP5321587B2 (ja) |
CN (1) | CN102105573B (ja) |
DE (1) | DE112009001785B4 (ja) |
WO (1) | WO2010010789A1 (ja) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013001849A (ja) * | 2011-06-17 | 2013-01-07 | Nok Kluber Kk | 導電性グリース組成物 |
WO2020129305A1 (ja) * | 2018-12-21 | 2020-06-25 | 昭和電工株式会社 | グリース組成物 |
WO2020153318A1 (ja) * | 2019-01-22 | 2020-07-30 | トヨタ自動車株式会社 | 走行することにより車体が帯電する車両用潤滑剤 |
JP2020117696A (ja) * | 2019-01-22 | 2020-08-06 | トヨタ自動車株式会社 | 走行することにより車体が帯電する車両用潤滑剤 |
JP2021017484A (ja) * | 2019-07-18 | 2021-02-15 | デュポン・東レ・スペシャルティ・マテリアル株式会社 | 潤滑剤組成物 |
JP2021195015A (ja) * | 2020-06-15 | 2021-12-27 | トヨタ自動車株式会社 | 摩擦中和除電式潤滑機構を有する正電位に帯電する車両 |
CN113954775A (zh) * | 2020-07-20 | 2022-01-21 | 丰田自动车株式会社 | 汽车用滑动构件 |
JP2022020409A (ja) * | 2020-07-20 | 2022-02-01 | トヨタ自動車株式会社 | 摺動部材 |
US11912956B2 (en) | 2020-07-20 | 2024-02-27 | Toyota Jidosha Kabushiki Kaisha | Sliding member |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015202462B4 (de) | 2015-02-11 | 2018-05-09 | Volkswagen Aktiengesellschaft | Verfahren zur strukturabhängigen Eigenschaftsbestimmung eines pastösen Stoffgemisches |
US10907753B2 (en) * | 2015-06-22 | 2021-02-02 | Ravarini Castoldi & C.S.R.L. | Heated hose, in particular for oiling plants, in particular for electrostatic oiling of metal bands |
CN106675719A (zh) * | 2016-12-09 | 2017-05-17 | 新乡市恒星科技有限责任公司 | 导电氟索润滑剂及其制备方法 |
CN107629858B (zh) * | 2017-10-26 | 2020-12-04 | 湖南金化科技集团有限公司 | 一种水基切削液及其制备方法 |
CN111454761B (zh) * | 2020-04-23 | 2022-02-08 | 中国科学院上海高等研究院 | 具有烷基端链的有机液晶摩擦改进剂及其制备方法 |
CN111944594A (zh) * | 2020-08-26 | 2020-11-17 | 惠州市阿特斯润滑技术有限公司 | 导杆导电润滑脂 |
DE102021214391A1 (de) * | 2021-08-05 | 2023-02-09 | Aktiebolaget Skf | Lageranordnung für einen Elektromotor, und Elektromotor |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002250353A (ja) * | 2000-12-18 | 2002-09-06 | Nsk Ltd | 転がり軸受 |
JP2003269469A (ja) * | 2002-03-15 | 2003-09-25 | Nsk Ltd | 転動装置 |
JP2004162909A (ja) * | 2002-10-22 | 2004-06-10 | Nok Kluber Kk | 導電性グリース封入軸受 |
WO2006090641A1 (ja) * | 2005-02-22 | 2006-08-31 | Nok Kluber Co., Ltd. | 潤滑剤 |
JP2007308578A (ja) * | 2006-05-18 | 2007-11-29 | Sumikou Junkatsuzai Kk | フッ素グリース組成物 |
JP2008024783A (ja) * | 2006-07-19 | 2008-02-07 | Nsk Ltd | グリース組成物及び転動装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001304276A (ja) | 2000-04-18 | 2001-10-31 | Ntn Corp | 通電グリース封入軸受 |
US6589918B2 (en) * | 2000-06-22 | 2003-07-08 | Nsk Ltd. | Conductive grease and rolling apparatus packed with the same |
US6652149B2 (en) * | 2001-02-20 | 2003-11-25 | Nsk Ltd. | Rolling bearing |
US7196042B2 (en) * | 2002-03-07 | 2007-03-27 | Nsk Ltd. | Grease composition and rolling apparatus |
-
2009
- 2009-06-26 WO PCT/JP2009/061745 patent/WO2010010789A1/ja active Application Filing
- 2009-06-26 DE DE112009001785.1T patent/DE112009001785B4/de active Active
- 2009-06-26 JP JP2010521658A patent/JP5321587B2/ja active Active
- 2009-06-26 US US13/054,186 patent/US8470748B2/en active Active
- 2009-06-26 CN CN200980128847.5A patent/CN102105573B/zh active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002250353A (ja) * | 2000-12-18 | 2002-09-06 | Nsk Ltd | 転がり軸受 |
JP2003269469A (ja) * | 2002-03-15 | 2003-09-25 | Nsk Ltd | 転動装置 |
JP2004162909A (ja) * | 2002-10-22 | 2004-06-10 | Nok Kluber Kk | 導電性グリース封入軸受 |
WO2006090641A1 (ja) * | 2005-02-22 | 2006-08-31 | Nok Kluber Co., Ltd. | 潤滑剤 |
JP2007308578A (ja) * | 2006-05-18 | 2007-11-29 | Sumikou Junkatsuzai Kk | フッ素グリース組成物 |
JP2008024783A (ja) * | 2006-07-19 | 2008-02-07 | Nsk Ltd | グリース組成物及び転動装置 |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013001849A (ja) * | 2011-06-17 | 2013-01-07 | Nok Kluber Kk | 導電性グリース組成物 |
WO2020129305A1 (ja) * | 2018-12-21 | 2020-06-25 | 昭和電工株式会社 | グリース組成物 |
JPWO2020129305A1 (ja) * | 2018-12-21 | 2021-02-15 | 昭和電工株式会社 | グリース組成物 |
JP7295044B2 (ja) | 2019-01-22 | 2023-06-20 | トヨタ自動車株式会社 | 走行することにより車体が帯電する車両用潤滑剤 |
WO2020153318A1 (ja) * | 2019-01-22 | 2020-07-30 | トヨタ自動車株式会社 | 走行することにより車体が帯電する車両用潤滑剤 |
JP2020117696A (ja) * | 2019-01-22 | 2020-08-06 | トヨタ自動車株式会社 | 走行することにより車体が帯電する車両用潤滑剤 |
KR20210110619A (ko) * | 2019-01-22 | 2021-09-08 | 도요타 지도샤(주) | 주행함으로써 차체가 대전하는 차량용 윤활제 |
US12031102B2 (en) | 2019-01-22 | 2024-07-09 | Toyota Jidosha Kabushiki Kaisha | Lubricant for vehicle having vehicle body charged by driving |
KR102655924B1 (ko) | 2019-01-22 | 2024-04-08 | 도요타 지도샤(주) | 주행함으로써 차체가 대전하는 차량용 윤활제 |
JP2021017484A (ja) * | 2019-07-18 | 2021-02-15 | デュポン・東レ・スペシャルティ・マテリアル株式会社 | 潤滑剤組成物 |
JP7273639B2 (ja) | 2019-07-18 | 2023-05-15 | デュポン・東レ・スペシャルティ・マテリアル株式会社 | 潤滑剤組成物 |
JP7372213B2 (ja) | 2020-06-15 | 2023-10-31 | トヨタ自動車株式会社 | 摩擦中和除電式潤滑機構を有する正電位に帯電する車両 |
JP2021195015A (ja) * | 2020-06-15 | 2021-12-27 | トヨタ自動車株式会社 | 摩擦中和除電式潤滑機構を有する正電位に帯電する車両 |
JP2022020409A (ja) * | 2020-07-20 | 2022-02-01 | トヨタ自動車株式会社 | 摺動部材 |
US11635109B2 (en) | 2020-07-20 | 2023-04-25 | Toyota Jidosha Kabushiki Kaisha | Sliding member |
JP7290611B2 (ja) | 2020-07-20 | 2023-06-13 | トヨタ自動車株式会社 | 自動車用摺動部材 |
JP7290612B2 (ja) | 2020-07-20 | 2023-06-13 | トヨタ自動車株式会社 | 摺動部材 |
JP2022020397A (ja) * | 2020-07-20 | 2022-02-01 | トヨタ自動車株式会社 | 自動車用摺動部材 |
US11713432B2 (en) | 2020-07-20 | 2023-08-01 | Toyota Jidosha Kabushiki Kaisha | Automotive slide member |
CN113954775B (zh) * | 2020-07-20 | 2023-12-12 | 丰田自动车株式会社 | 汽车用滑动构件 |
US11912956B2 (en) | 2020-07-20 | 2024-02-27 | Toyota Jidosha Kabushiki Kaisha | Sliding member |
CN113954775A (zh) * | 2020-07-20 | 2022-01-21 | 丰田自动车株式会社 | 汽车用滑动构件 |
Also Published As
Publication number | Publication date |
---|---|
DE112009001785T5 (de) | 2012-01-26 |
DE112009001785B4 (de) | 2021-04-01 |
CN102105573A (zh) | 2011-06-22 |
JP5321587B2 (ja) | 2013-10-23 |
CN102105573B (zh) | 2014-08-20 |
US20110111993A1 (en) | 2011-05-12 |
JPWO2010010789A1 (ja) | 2012-01-05 |
US8470748B2 (en) | 2013-06-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5321587B2 (ja) | 導電性グリース | |
JP5747230B2 (ja) | 導電性グリース組成物 | |
US8501671B2 (en) | Grease composition and process for producing the same | |
JP4811408B2 (ja) | グリース組成物 | |
KR100900748B1 (ko) | 윤활제 | |
EP2014751B1 (en) | Lubricant composition for oil retaining bearing | |
JPWO2006030632A1 (ja) | パーフルオロポリエーテル油組成物 | |
US10633612B2 (en) | Lubricant composition | |
JP5386803B2 (ja) | グリース組成物 | |
JP5734269B2 (ja) | 潤滑グリース組成物 | |
JP4613530B2 (ja) | 潤滑グリース組成物 | |
JP2009091464A (ja) | 潤滑グリース組成物 | |
JPWO2018220945A1 (ja) | グリース組成物及びこれを塗布した摺動部材 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980128847.5 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09800304 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010521658 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13054186 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 09800304 Country of ref document: EP Kind code of ref document: A1 |