CN102471718A - Grease composition and machine component - Google Patents

Grease composition and machine component Download PDF

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Publication number
CN102471718A
CN102471718A CN2010800348683A CN201080034868A CN102471718A CN 102471718 A CN102471718 A CN 102471718A CN 2010800348683 A CN2010800348683 A CN 2010800348683A CN 201080034868 A CN201080034868 A CN 201080034868A CN 102471718 A CN102471718 A CN 102471718A
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Prior art keywords
fat
salt
carbonatoms
oil composition
additive
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Chinese (zh)
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山本正道
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Kyodo Yushi Co Ltd
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Kyodo Yushi Co Ltd
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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
    • 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
    • C10M169/06—Mixtures of thickeners 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
    • C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
    • C10M101/02—Petroleum fractions
    • 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
    • C10M115/00—Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof
    • C10M115/08—Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof containing nitrogen
    • 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
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/26—Carboxylic acids; Salts thereof
    • C10M129/56—Acids of unknown or incompletely defined constitution
    • C10M129/58—Naphthenic acids
    • 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
    • C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
    • C10M2207/122—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms monocarboxylic
    • 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
    • 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/16—Naphthenic acids
    • 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
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • 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
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/046—Overbasedsulfonic acid salts
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/043—Ammonium or amine salts thereof
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/045—Metal containing thio derivatives
    • 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
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/04—Groups 2 or 12
    • 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
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/02—Pour-point; 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
    • 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
    • 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
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
    • 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
    • C10N2040/32—Wires, ropes or cables lubricants
    • 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

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Lubricants (AREA)

Abstract

Disclosed is a grease composition comprising a base oil, a thickening agent and an additive. The grease composition is characterized in that the base oil has a kinematic viscosity of 50 to 200 mm<2>/s at 40 DEG C, the thickening agent comprises a diurea compound represented by general formula (I): R1-NHCONH-R2-NHCONH-R3 (wherein R2 represents a bivalent aromatic hydrocarbon group having 6 to 15 carbon atoms; and R1 and R3 are the same as or different from each other and independently represent a cyclohexyl group, or a linear or branched alkyl group having 8 to 22 carbon atoms), the additive is at least one component selected from the group consisting of a metal salt of naphthenic acid, a salt of a fatty acid having 6 to 10 carbon atoms and an aliphatic amine having 6 to 10 carbon atoms, and a metal salt of an organic sulfonic acid. The composition exhibits excellent fretting resistance at a temperature ranging from ambient temperature to a lower temperature (e.g., -50 DEG C, preferably about -40 DEG C).

Description

Fat or oil composition and mechanical part
Technical field
The present invention relates to fat or oil composition and mechanical part, relate in particular to the lubricating grease composition that fretting-resistant property is excellent under normal temperature～low temperature and enclosed the mechanical parts such as bearing of said composition.
Background technology
Automobile, motor goods, various mechanical part and goods utilize railway, truck to transport mostly.When this transports, because the uneven caused vibrations in rail joint place, road have been coated with greasy lubricating component fretting (fretting) can take place.Report points out that fretting is the surface disturbance that under small amplitude, produces, and in atmosphere, generates the abrasion powder of oxidation, the living serious abrasion (non-patent literature 1) of fecund owing to its grinding.
As its countermeasure, proposed: (1) reduces the relatively sliding amount, and direct contact is separated, prevents on (2) two sides, (3) thus prevent adhering between the surface through covering contact surface such as phosphate coating or supplying lubricating oil, grease, wait (non-patent literature 1).
The grease that actual fretting-resistant property is excellent has carried out more R and D at the automobile wheel bearing in the grease technical field.For example, there is report to point out, uses aromatic series two ureas to soften the grease of denseness, compare as the grease of thickening material, significantly improved (non-patent literatures 2) such as fretting-resistant property with existing use lithium soap as thickening material.
As stated, thus kind or the softening denseness having taked in the reality to change thickening material are improved countermeasures such as greasy inflow.
But; Aromatic series two ureas are mobile poor, for example when being used for bearing, though when deep groove ball bearing, can show longer life; But when angular contact ball bearing, have owing to flow into deficiency and the short shortcoming of lubricating life to lubricated portion, the bearing that can use is restricted.As stated, the improvement that utilizes the change thickening material to carry out exists the grease that is obtained to lack the problem of versatility.
When softening denseness, produce the problem of leaking in addition, can't be used for the position that leakage can cause problem.Therefore, it also lacks versatility as grease.
But these countermeasures all are frettings of taking place down to normal temperature, the report of the fretting that does not almost have to prevent that occurs at low temperatures from giving birth to.
And then along with base oil viscosity under the low temperature increases, greasy inflow property will reduce, therefore above-mentioned (3) thus prevent that through the supply grease ability of adhering between the surface from will reduce.Therefore, increase, considered to use with the synthetic oil of costliness countermeasure as the base oil of main body in order not cause under the low temperature base oil viscosity, but exist inadequate inhibition base oil viscosity rising effect, cause the surging shortcoming of raw material cost.
The prior art document
Non-patent literature
Non-patent literature 1: the Yamamoto hero is second-class: tribology (ト ラ イ ボ ロ ジ one), science and engineering society, distribution on November 25th, 1999,201～203 pages
Non-patent literature 2:T.Endo:Eurogrease, (1997) 25～40 pages of November/December
Summary of the invention
The object of the present invention is to provide the excellent fat or oil composition of fretting-resistant property.
Other purpose of the present invention is to provide a kind of and disobeys base oil that the expensive synthetic oil of relying is a main body and from normal temperature (for example-50 ℃, preferred about-40 ℃) fat or oil composition that fretting-resistant property is excellent to low temperature.
Another other purpose of the present invention is to provide the mechanical part that has used above-mentioned fat or oil composition.
The present invention provides fat or oil composition and the mechanical part shown in following.
1. a fat or oil composition is characterized in that, in the fat or oil composition that contains base oil, thickening material and additive,
40 ℃ kinematic viscosity of base oil is 50～200mm 2/ s,
Thickening material contains two carbamide compounds shown in the following general formula (I),
General formula (I): R 1-NHCONH-R 2-NHCONH-R 3
In the formula, R 2Be the divalent aromatic hydrocarbyl of carbonatoms 6～15, R 1And R 3Be identical or different group, the straight or branched alkyl of representative ring hexyl, carbonatoms 8～22,
Additive is at least a kind that is selected from by in the salt of the fatty amine of the lipid acid of metallic naphthenate, carbonatoms 6～10 and carbonatoms 6～10 and the group that metal organic sulfonate is formed.
2. according to above-mentioned 1 described fat or oil composition; Said metallic naphthenate is at least a kind that is selected from the group that chaulmoogric acid zinc and cyclohexylenedinitrilotetraacetic acid zinc forms; Said amine salt is the salt of straight chain fatty amine of straight chain fatty acid and the carbonatoms 6～10 of carbonatoms 6～10, and said organic sulfonate is at least a kind that is selected from the group that dinonylnaphthalene sulfonic acid calcium salt, dinonylnaphthalene sulfonic acid zinc salt and barium dinonyl napthalene sulphonate form.
3. according to above-mentioned 1 or 2 described fat or oil compositions; It is characterized in that in the fat or oil composition, the content of said metallic naphthenate is 0.5～5.0 quality %; The content of said amine salt is 1.5～5.0 quality %, and the content of said metal organic sulfonate is 1.5～5.0 quality %.
4. mechanical part, it has enclosed any described fat or oil composition in above-mentioned 1～3.
Fat or oil composition fretting-resistant property of the present invention is excellent.Therefore, fat or oil composition of the present invention can be used for the lubricated of various mechanical parts.Do not limit as the mechanical part of object is special, can enumerate out for example rolling bearing, ball screw, linear guide bearing, various gear, cam and constant velocity cardan joint, shaft bearing (sliding surface bearing), piston, screw, hawser, chain etc.Be particularly suitable for rolling bearing.
Embodiment
The base oil that uses in the fat or oil composition of the present invention is so long as 40 ℃ kinematic viscosity is 50～200mm 2The base oil of/s gets final product, not special restriction.If 40 ℃ kinematic viscosity is less than 50mm 2Then there is the tendency of oil film attenuation in/s, can't guarantee sufficient oil film thickness sometimes, when surpassing 200mm 2During/s, the tendency that exists viscous resistance (viscosity resistance) to increase.
From the viewpoint of cost and performance, most preferably MO.As required, can and use MO or synthetic oil mixing.
As synthetic oil; Can use is synthetic oil with diester, polyol ester as the ester of representative for example; With polyalphaolefin, polybutylenes is the synthetic hydrocarbon oil of representative; With alkyl diphenyl base ether, W 166 is that the ether of representative is synthetic oil, various synthetic oils such as silicone oil, and these can use separately also and can use mixing more than 2 kinds.
But from the viewpoint of cost and performance, the content of the MO in the base oil is preferably more than the 70 quality %, further is preferably 80～100 quality %, most preferably is 100 quality %.
The thickening material that uses in the fat or oil composition of the present invention contains the two specific carbamide compounds shown in the general formula (I).
The content of two carbamide compounds in the fat or oil composition of the present invention is: make the denseness of fat or oil composition reach preferred 235～325, the further amount of preferred 280～325 degree.Particularly, all be preferably 5～15 quality %, further be preferably 8～12 quality % with respect to fat or oil composition.
If less than 5 quality %, grease is being applied when shearing and can soften, grease leaks from mechanical part easily; If more than the 15 quality %, greasy sometimes inflow property can reduce.
On the other hand, if be the grease of thickening material, then can't give sufficient fretting-resistant property with metallic soaps such as lithium soaps.
The additive that uses in the fat or oil composition of the present invention contains at least a kind that is selected from by in the salt of the fatty amine of the lipid acid of metallic naphthenate, carbonatoms 6～10 and carbonatoms 6～10 and the group that metal organic sulfonate is formed.
As the metal of metallic naphthenate, can enumerate out zinc, magnesium, calcium, aluminium etc.Wherein zinc salt is particularly excellent.
The lipid acid that constitutes the carbonatoms 6～10 of aforementioned amine salt can be straight or branched lipid acid.
In addition, the fatty amine that constitutes the carbonatoms 6～10 of aforementioned amine salt also can be the straight or branched fatty amine.The salt of the straight chain fatty acid of preferred carbonatoms 6～10 and the straight chain fatty amine of carbonatoms 6～10, the salt of the straight chain fatty acid of further preferred carbonatoms 8 and the straight chain fatty amine of carbonatoms 8.
As the organic sulfonic acid that constitutes aforementioned metal organic sulfonate, can enumerate out sulfonated petro-leum, dinonylnaphthalene sulfonic acid, the synthetic sulfonic acid of this type of heavy alkyl benzene sulphonate(ABS) that the sulfonation through the aromatic hydrocarbons composition in the lubricating oil distillate obtains.
As the metal of aforementioned metal organic sulfonate, can enumerate out calcium, zinc, barium, sodium etc.The organic sulfonic acid calcium salt can be neutrality, also can be high alkalinity salt, and for example using base number is the calcium salt about 50～500mgKOH/g.
The metal-salt of preferred dinonylnaphthalene sulfonic acid, calcium salt, zinc salt, the barium salt of preferred especially dinonylnaphthalene sulfonic acid.
In the fat or oil composition of the present invention, the content of metallic naphthenate is preferably 0.5～5.0 quality %, is preferably 1.0～5.0 quality % especially,
The content of the salt of the fatty amine of the lipid acid of carbonatoms 6～10 and carbonatoms 6～10 is preferably 1.5～5.0 quality %, is preferably 2.0～5.0 quality % especially.
The content of metal organic sulfonate is preferably 1.5～5.0 quality %, is preferably 2.0～5.0 quality % especially.
And with more than 2 kinds the time, can suitably adjust content.
If content less than above-mentioned content, though then have the effect as rust-preventive agent, prevents that the effect of the fretting of generation under normal temperature～low temperature is insufficient; Even it is also can't see better additive effect more than adding 5.0 quality %, uneconomical.
The metallic naphthenate, lipid acid amine salt, the organic sulfonate that use as the additive of fat or oil composition of the present invention are widely used as the rust-preventive agent of lubricating oil usually, in grease too as rust-preventive agent.
But, still do not exist above-mentioned metallic naphthenate, amine salt, metal organic sulfonate to the fretting that prevents to produce under the normal temperature～low temperature report of content and open effectively like this.
In the fat or oil composition of the present invention, can also add other the general additive beyond above-mentioned metallic naphthenate, amine salt, the metal organic sulfonate as required.Additive shown in below for example can enumerating out.
Inhibitor
Amine: phenyl αNai An, alkylation phenyl αNai An, alkylated diphenylamine etc.
Phenols: 2, hindered phenols such as 6-di-t-butyl-p-cresol, tetramethylolmethane four [3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester], octadecyl-3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester etc.
Quinoline system: 2,2,4-trimethylammonium-1,2 EEDQ polymkeric substance etc.
Rust-preventive agent
Carboxylic acid and its verivate: alkenyl succinic anhydrides, alkenyl succinate, alkenyl succinic acid half ester
Carboxylate salt: metal-salt of lipid acid, diprotic acid, lanolin fatty acid, alkenyl succinic etc. (Ca, Ba, Mg, Al, Zn, Na etc.) or amine salt
Passivator: Sodium Nitrite, Sodium orthomolybdate etc.
Ester: sorbitan trioleate, dehydrated sorbitol mono-fatty acid ester etc.
Anticolodal: benzotriazole or derivatives thereof, zinc oxide etc.
Extreme pressure agent
Phosphorus series compound: Tritolyl Phosphate, tricresyl phosphate 2-ethylhexyl etc.
Chalcogenide compound: benzyldithio toluene, various polysulfides etc.
Sulphur-phosphorus series compound: triphenyl thiophosphatephosphorothioate
Organo-metallic is an extreme pressure agent: salt such as the Zn of salt such as the Zn of dialkyl dithiophosphoric acid, Mo, Sb, Bi, dialkyldithiocarbamacompositions, Mo, Sb, Ni, Cu, Bi etc.
And, ashless MGD, ashless dithiophosphates carbaminate etc.
Solid lubricant: molybdenumdisulphide, graphite, PTFE, MCA etc.
The preventing and to deal with (comparative example of afterwards stating 6～10, comparative example 19,20) through changing thickening material kind (effects of above-mentioned (2) that aromatic series urea epithelium brings), softening denseness (improvement that grease is flowed into) of fretting under the normal temperature.
But, because grease inflow property reduction under the low temperature can't expect that the fretting that brings through greasy supply prevents effect.
Fat or oil composition of the present invention contains specific additive (salt of the fatty amine of the lipid acid of metallic naphthenate, carbonatoms 6～10 and carbonatoms 6～10 or metal organic sulfonate).
Therefore can think; When for example using it for bearing; Through the strong adsorption power of this additive to component surface, the performance bonding effect at the interface of two urea greases and ball and interior outer rim is even also can make the two sides fully separate under the environment of grease inflow property reduction; Prevent that the two sides from directly contacting, thereby can prevent the fretting under the low temperature.
Can improve this effect of the present invention of fretting-resistant property under normal temperature～low temperature through adding specific additive, be that those skilled in the art can't easily predict.
Embodiment 1～14, comparative example 1～17
In base oil, be 2 moles ratio with raw material amine with respect to 1 mole of isocyanate material, specified amount is reacted, add the additive of specified amount, be adjusted to the denseness of regulation through 3 roller roller mills.
Comparative example 18
In the base oil of specified amount, quantitative hydroxy lithium stearate of hybrid regulatory and heating for dissolving after the cooling, add the additive of specified amount, are adjusted to the denseness of regulation through 3 roller roller mills.
TP
Mixed denseness: JIS K 2220.7
Fei Funa friction oxidation test (Fafnir friction oxidation test) (based on ADTM D 4170)
Estimate the standard test of fretting-resistant property
Coated test grease on 2 groups of following test thrust blocks, wear loss (weight due to the fretting abrasion reduces) is obtained in the swing of stipulating running.
Test conditions
Bearing: ANDREWS W 5/8
Loading: 2450N (550lbf) (surface pressure: 1861MPa)
Angle of oscillation: 0.21rad (12 °)
Hunting frequency: 25Hz
Time: 22h
Temperature: 25 ℃ ,-30 ℃
The grease enclosed volume: every group of bearing is 1.0g
Wear loss: the quality reduction of the circle of every group of bearing (total mass reduction/2 of test bearing circle)
Judge
◎: wear loss is (a fretting-resistant property: very strong) below the 2.0mg
Zero: wear loss is above 2.0 and less than 5.0mg (fretting-resistant property: strong)
△: wear loss is above 5.0 and less than 15.0mg (fretting-resistant property: have slightly)
*: wear loss is 15.0mg above (a fretting-resistant property: do not have)
Rust prevention test: ASTM D1743-73 bearing rust prevention test
Judge
Zero: rustless
*: rust is arranged
The result is shown in table 1～5.
Table 1
Figure BDA0000134162280000071
Table 2
Figure BDA0000134162280000081
Table 3
Figure BDA0000134162280000082
Table 4
Figure BDA0000134162280000091
Table 5
Figure BDA0000134162280000092
※ 1: diphenylmethanediisocyanate
※ 2: be the metallic naphthenate of staple with chaulmoogric acid zinc
※ 3: the salt of the straight chain fatty amine of the straight chain fatty acid of carbonatoms 8 and carbonatoms 8
※ 4: dinonylnaphthalene sulfonic acid calcium
※ 5: dinonylnaphthalene sulfonic acid zinc
※ 6: dinonyl naphthalene sulfonate barium
※ 7: the mixture trade(brand)name HITEC833 of alkylthio phosphate compound and amine compound (Ya Fudun (Afton) chemical company system)
※ 8: lime carbonate
※ 9: Zinic stearas
※ 10: trade(brand)name MOLYVAN A (R.T.VANDERBILT corporate system)
※ 11: trade(brand)name LUBRIZOL 1395 (Japanese Lu Borun (Lubrizol) corporate system)
ODA: octadecylamine
CHA: hexahydroaniline
OA: octylame
PAO: poly-alpha-olefin
In addition, the addition in () interior grease full dose of the ※ 2～※ 6 in the table, ※ 8, ※ 9: quality % representes the effective constituent concentration of additive.
In addition, the addition in () interior grease full dose of the ※ in the table 7, ※ 10, ※ 11: quality % representes the interpolation concentration of commodity.
The salt of the lipid acid of interpolation metallic naphthenate, carbonatoms 6～10 and the fatty amine of carbonatoms 6～10 or metal organic sulfonate are as the fat or oil composition of the embodiment 1～14 of additive; Not softening denseness; Wear loss is few under normal temperature and low temperature; Fretting-resistant property is excellent, and rust-preventing characteristic is also excellent.
Do not contain the comparative example 1,9 of special additive of the present invention and 10 fat or oil composition, wear loss is many under normal temperature and low temperature, and fretting-resistant property is poor, and rust-preventing characteristic is also poor.
Contain the comparative example 2,4,11 of the additive that is different from special additive of the present invention and 13 fat or oil composition, wear loss is few at normal temperatures, but wear loss is many at low temperatures, and fretting-resistant property is poor, and rust-preventing characteristic is also poor.
Contain the fat or oil composition of the comparative example 3,5,6,12,14,15 of the additive that is different from special additive of the present invention, wear loss is many under normal temperature and low temperature, and fretting-resistant property is poor, and rust-preventing characteristic is also poor.
Used the comparative example 7 of the low base oil of kinematic viscosity and 16 fat or oil composition, wear loss is few slightly at normal temperatures, but wear loss is many at low temperatures, and fretting-resistant property is poor, and rust-preventing characteristic is also poor.
Reduced comparative example 8 and 17 the fat or oil composition of the content of thickening material, mixed denseness is high, and wear loss is few slightly at normal temperatures, but wear loss is many at low temperatures, and fretting-resistant property is poor, and rust-preventing characteristic is also poor.
Use the fat or oil composition of lithium soap as the comparative example 18 of thickening material, though rust-preventing characteristic is excellent, wear loss is many under normal temperature and low temperature, and fretting-resistant property is poor.

Claims (4)

1. a fat or oil composition is characterized in that, in the fat or oil composition that contains base oil, thickening material and additive,
40 ℃ kinematic viscosity of base oil is 50～200mm 2/ s,
Thickening material contains two carbamide compounds shown in the following general formula (I),
General formula (I): R 1-NHCONH-R 2-NHCONH-R 3
In the formula, R 2Be the divalent aromatic hydrocarbyl of carbonatoms 6～15, R 1And R 3Be identical or different group, the straight or branched alkyl of representative ring hexyl, carbonatoms 8～22,
Additive is at least a kind that is selected from salt and the group that metal organic sulfonate is formed of fatty amine of lipid acid and carbonatoms 6～10 of metallic naphthenate, carbonatoms 6～10.
2. fat or oil composition according to claim 1; Said metallic naphthenate is at least a kind that is selected from the group that chaulmoogric acid zinc and cyclohexylenedinitrilotetraacetic acid zinc forms; Said amine salt is the salt of straight chain fatty amine of straight chain fatty acid and the carbonatoms 6～10 of carbonatoms 6～10, and said organic sulfonate is at least a kind that is selected from the group that dinonylnaphthalene sulfonic acid calcium salt, dinonylnaphthalene sulfonic acid zinc salt and barium dinonyl napthalene sulphonate form.
3. fat or oil composition according to claim 1 and 2; It is characterized in that in the fat or oil composition, the content of said metallic naphthenate is 0.5～5.0 quality %; The content of said amine salt is 1.5～5.0 quality %, and the content of said metal organic sulfonate is 1.5～5.0 quality %.
4. mechanical part, it has enclosed any described fat or oil composition in the claim 1～3.
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