CN103415604A - Sliding material composition and sliding member - Google Patents

Sliding material composition and sliding member Download PDF

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Publication number
CN103415604A
CN103415604A CN2012800098066A CN201280009806A CN103415604A CN 103415604 A CN103415604 A CN 103415604A CN 2012800098066 A CN2012800098066 A CN 2012800098066A CN 201280009806 A CN201280009806 A CN 201280009806A CN 103415604 A CN103415604 A CN 103415604A
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China
Prior art keywords
slide unit
resin
material composition
content
sliding material
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Pending
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CN2012800098066A
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Chinese (zh)
Inventor
吉川胜
富川贵志
川井徹
樱井辅
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Honda Motor Co Ltd
Taiho Kogyo Co Ltd
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Honda Motor Co Ltd
Taiho Kogyo Co Ltd
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Publication of CN103415604A publication Critical patent/CN103415604A/en
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M157/00—Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential
    • C10M157/02—Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential at least one of them being a halogen-containing compound
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    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/56—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing nitrogen
    • C10M105/58—Amines, e.g. polyalkylene polyamines, quaternary amines
    • C10M105/60—Amines, e.g. polyalkylene polyamines, quaternary amines having amino groups bound to an acyclic or cycloaliphatic carbon atom
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    • C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
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    • C10M2201/102—Silicates
    • C10M2201/103—Clays; Mica; Zeolites
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    • C10M2201/105—Silica
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    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/1003—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds used as base material
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    • C10M2213/06—Perfluoro polymers
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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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    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
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    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
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  • Chemical & Material Sciences (AREA)
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Abstract

The purpose of the present invention is to provide a sliding material composition and sliding member which exhibit superior wear-resistance and generate little friction when starting to move and when sliding, even if the opposing sliding member is configured from a rubber-based material. The present invention pertains to a sliding material composition for use in a sliding member that slides against an opposing sliding member configured from rubber, said sliding material composition comprising a binder resin, 5-25 vol% of an N omega-monoacyl basic amino acid, 5-25 vol% of molybdenum disulfide, and 5-20 vol% of a polytetrafluoroethylene.

Description

Sliding material composition and slide unit
Technical field
The present invention relates to a kind of sliding material composition and a kind of slide unit, and, especially, relating to a kind of sliding material composition that is applicable to slide unit, the pairing sliding material of described slide unit consists of rubber.
Background technology
Traditionally, lubricated for the slide unit of realizing machine, adopted at each slide unit surface-coated sliding material composition, so that the sliding material composition is as the lubricant film at slide unit place.Therefore, need a kind of like this sliding material composition to become lubricant film, this lubricant film frictional force is little, and outstanding abrasion resistance properties excellence even also can not be worn after having used a very long time, and has high-adaptability with the material of pairing.
As traditional sliding material composition; for example; comprise adhesive resin; the sliding material composition of solid lubricant and N ω-monoacyl basic aminoacids (referring to patent document 1); with comprise heat stable resin; fluoro-resin, solid lubricant, the sliding material composition of organopolysiloxane and organic solvent (referring to patent document 2) is well-known.
The prior art file
Patent document
[patent document 1] JP-A-2004-10707
[patent document 2] JP-A-H08-109352
Summary of the invention
The problem that invention will solve
The sliding material composition that patent document 1 is described is in unlubricated condition,, while there is no the drying conditions lower slip of liquid lubrication such as lubricating oil and lubricating grease, has good low friction and abrasion resistance properties that is.But, at mixed lubrication, namely, under each contingent condition of liquid lubrication (existing under the lubricated environment of lubricating oil or lubricating grease) and boundary lubrication (not having under the lubricated environment of lubricating oil or lubricating grease), particularly, when the slide unit of pairing is the rubber series material, there is the problem that frictional coefficient is large.
Become, although the sliding material composition described in patent document 2 does not reduce adhesive performance, the ovenable roasting property of frictional coefficient and coat,, when starting to start, can't obtain the reduction effect of frictional coefficient, simultaneously, further, wear resistance is also not enough.
The object of the present invention is to provide a kind of sliding material composition and a kind of slide unit, especially, when corresponding slide unit is rubber type of material, described sliding material composition and slide unit can obtain low friction performance when starting and in the process of sliding, and, also have outstanding abrasion resistance properties.
The method of dealing with problems
Consider the problem of foregoing description, inventor of the present invention has completed the present invention by following discovery, namely, due to high as the hysteresis of elastomeric rubber in sliding against the rubber series material and when the startup of sliding static friction coefficient high, so can be by reducing static friction coefficient, and obtain the understanding to abrasion resistance properties, obtain low friction effect.That is, the present invention relates to following sliding material composition and sliding part.
[1] a kind of composition of sliding material for slide unit, the pairing slide unit of described slide unit consists of rubber, and described sliding material composition comprises: adhesive resin; 5 to 25vol% N ω-monoacyl basic aminoacids; 5 to 25vol% molybdenumdisulphide, and 5 to 20vol% polytetrafluoroethylene (PTFE).
[2] according to [1] described sliding material composition, wherein, the ratio of the content of described tetrafluoroethylene and described molybdenumdisulphide content is by volume 0.5 to 2.0.
[3] according to [1] or [2] described sliding material composition, wherein, the total content of described molybdenumdisulphide and described tetrafluoroethylene of take is X, and the content of described N ω-monoacyl basic aminoacids of take is Y, and the ratio of X and Y meets relational expression 2≤X/Y≤3 by volume.
[4] according to the described sliding material composition of [1] to [3] any one, also comprise 10% volume or the following at least a graphite that is selected from, tungsten disulfide, mica, fluorine resin beyond described tetrafluoroethylene, boron nitride, the solid lubricant in fluorographite and soccerballene.
[5] according to the described sliding material composition of [1] to [4] any one, also comprise at least a SiC of being selected from, aluminum oxide, Si 3N 4, TiO 2, SiO 2, calcium carbonate, the inorganic additives in barium sulfate and calcium phosphate.
[6] according to the described sliding material composition of [1] to [5] any one, wherein, described adhesive resin is at least a polyamide-imide resin that is selected from, polyamide resin, resol, polyacetal resin, the resin in polyether-ether-ketone resin and polyphenylene sulfide.
[7] a kind of slide unit, the pairing slide unit of this slide unit consists of rubber, described slide unit comprises: the material preparation in being selected from iron and steel, stainless copper, cast iron, copper, copper alloy, aluminium, aluminium alloy, rubber, plastics and pottery of base material, this base material forms; And coat, this coat arranges on the surface of described base material, and comprises: adhesive resin; 5 to 25vol% N ω-monoacyl basic aminoacids; 5 to 25vol% molybdenumdisulphide and 5 to 20vol% tetrafluoroethylene.
[8] according to [7] described slide unit, wherein, in described coat, the ratio of the content of the content of tetrafluoroethylene and molybdenumdisulphide is by volume 0.5 to 2.0.
[9] according to [7] or [8] described slide unit, wherein, in described coat, the total content of molybdenumdisulphide and tetrafluoroethylene of take is X, and the content of described N ω-monoacyl basic aminoacids of take is Y, and the ratio of X and Y meets relational expression 2≤X/Y≤3 by volume.
[10] according to the described slide unit of [7] to [9] any one, wherein, described coat comprises 10vol% or the following at least a solid lubricant be selected from graphite, tungsten disulfide, mica, described tetrafluoroethylene fluorine resin, boron nitride, fluorographite and soccerballene in addition.
[11] according to the described slide unit of [7] to [10] any one, wherein, described coat comprises at least a SiC of being selected from, aluminum oxide, Si 3N 4, TiO 2, SiO 2, the inorganic additives in calcium carbonate, barium sulfate and calcium phosphate.
[12] according to the described slide unit of [7] to [11] any one, wherein, described adhesive resin is at least a polyamide-imide resin that is selected from, polyamide resin, resol, polyacetal resin, the resin in polyether-ether-ketone resin and polyphenylene sulfide.
[13] according to the described slide unit of [7] to [12] any one, wherein, described pairing slide unit is the sealing member for the hub bearing part of vehicle.
The invention advantage
The object of the present invention is to provide a kind of sliding material composition, this Slide Group compound reaches low friction performance when slide unit starts, and also has good abrasion resistance properties in the process of sliding, especially, and when corresponding slide unit is rubber type of material.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of the trier that reciprocatingly slides that uses in embodiment.
Fig. 2 (a) and 2 (b) are the trier schematic diagram of testing friction moment of torsion in embodiment; Fig. 2 (a) is the trier schematical top view, and Fig. 2 (b) is the diagrammatic cross-section of the bearing of use in test.
Fig. 3 is the graphic representation that the friction torque test result is shown.
Embodiment
Sliding material composition of the present invention (following also referred to as " composition of the present invention ") comprises: adhesive resin; 5 to 25vol% N ω-monoacyl basic aminoacids; 5 to 25vol% molybdenumdisulphide and 5 to 20vol% polytetrafluoroethylene (PTFE).
Adhesive resin is the material with function of bonding composition of the present invention, and described adhesive resin is preferably polyamidoimide (PAI) resin, polyamide resin, resol, polyacetal resin, at least a in polyether-ether-ketone resin and polyphenylene sulfide.In these resins, from the angle of wear resisting property, preferably use polyamide-imide resin (PAI).
Composition of the present invention comprises N ω-monoacyl basic aminoacids, molybdenumdisulphide, and tri-kinds of solid lubricants of PTFE, and each lubricant has regulation content.
When antagonism was slided as the rubber of elastomeric pairing material, when a part of setting in motion, frictional coefficient changed kinetic friction coefficient into by static friction coefficient, so the impact of the lubricant that in the lubricant easily mixed that slides, frictional coefficient is lower.In contrast, in the situation that pairing material is the slip of rigid material, frictional coefficient can not change kinetic friction coefficient into before integral body starts to move, so, the impact of the lubricant that in the lubricant easily mixed that slides, frictional coefficient is higher.In view of the above fact, composition of the present invention comprises three kinds of solid lubricants.The first solid lubricant reduces static friction coefficient when starting, the second solid lubricant reduces kinetic friction coefficient and can obtain abrasion resistance properties, and the 3rd solid lubricant is not having lubricating grease,, reduces kinetic friction coefficient in the situation in lubricated absence that is.The present invention adopt as amino acid be solid lubricant N ω-the monoacyl basic aminoacids is the first solid lubricant, molybdenumdisulphide (MoS 2) be the second lubricant, PTFE is the 3rd lubricant.
As the example of N ω-monoacyl basic aminoacids, example goes out N ω-lauroyl-1B.N ω-lauroyl-1B has the characteristics of low friction performance.Therefore, can be by by N ω-lauroyl-1B and adhesive resin is bonding obtains low friction coat composition.Due to the intensity of N ω-lauroyl-1B, lower than PTFE etc., therefore, when coexisting, solid lubricant such as PTFE can suppress the decline of abrasion resistance properties.In addition, during sliding, between pairing axle and slipping plane, form the composite bed of N ω-lauroyl-1B and solid lubricant, therefore, reduce friction.After reducing friction, suppressed the exothermic temperature of slipping plane, this causes the inhibition to the infringement of resin combination and composition transfer layer.As a result, can obtain outstanding wear resisting property.
Yet ω-the monoacyl basic aminoacids is inadequate in lubricating grease, to retain separately N, by being used in combination molybdenumdisulphide, can show low friction effect, and also improve abrasion resistance properties.In addition, by mixing PTFE, lubricating composition is not compensated owing in composition, there is no lubricating oil, therefore can expect low friction effect.In the situation that grease lubrication, owing to by slip, waiting compensation or exhausting lubricating oil, so having under lubricating oil or unlubricated oil condition by adding molybdenumdisulphide and PTFE can show the effect of low friction and outstanding abrasion resistance properties.
In the present invention, can easily obtain N ω-monoacyl basic aminoacids by ω-basic aminoacids, introducing hydrophobic acyl group.In the present invention, be used to the example of the basic aminoacids that forms N ω-monoacyl basic aminoacids, comprise Methionin, ornithine etc., and these amino acid can have optical activity or be racemic modification.Preferred acyl group is the saturated or unsaturated aliphatic acyl group with 8 to 22 carbon atoms.As the preferred embodiment of N ω-monoacyl basic aminoacids, example has gone out N ω-lauroyl-1B.
In composition, the content of N ω-monoacyl basic aminoacids is 5 to 25vol%, and is preferably 5 to 15vol%.When the content of N ω-monoacyl basic aminoacids is in above-mentioned scope, can obtain good initial low friction effect.
In composition, the content of molybdenumdisulphide is 5 to 25vol%, is preferably 5 to 15vol%.When the content of molybdenumdisulphide is in above-mentioned scope, can obtain good abrasion resistance properties.
The average particle size particle size of molybdenumdisulphide is preferably 0.5 μ m to 20 μ m, more preferably 1 μ m to 10 μ m.
In composition, the content of polytetrafluoroethylene (PTFE) is 5 to 20vol%, is preferably 5 to 15vol%.When the content of PTFE is in above-mentioned scope, can obtain good low friction effect.
The average particle size particle size of PTFE is preferably 0.5 μ m to 20 μ m, is more preferably 1 μ m to 10 μ m.
In addition, the ratio of the content of PTFE and the content of molybdenumdisulphide, be preferably by volume 0.5 to 2.0.When above-mentioned ratio is 0.5 or when above, the lubricating oil in lubricating grease is fully retained, the reduction that can rub, and can guarantee abrasion resistance properties, be therefore preferred.When aforementioned proportion is 2.0 or when following, even the lubricating oil in lubricating grease has been consumed, frictional coefficient also is difficult to improve, and is therefore preferred.
In addition, be X take the total amount of molybdenumdisulphide and PTFE, take the content of N ω-monoacyl basic aminoacids in the situation of Y, the ratio of X and Y preferably meets 2≤X/Y≤3 by volume.When X/Y is 2 or when above, the lubricating oil in lubricating grease is fully retained, and can reduce frictional coefficient, be therefore preferred.In addition, when X/Y is 3 or when following, the low friction effect of N ω-monoacyl basic aminoacids becomes fully, and can reduce frictional coefficient, be therefore preferred.
From the angle that obtains low rubbing characteristics, consider, composition of the present invention can comprise the solid lubricant except above-mentioned solid lubricant, and considers from the angle that rubbing characteristics is provided, and composition of the present invention can comprise inorganic additives
As solid lubricant except above-mentioned solid lubricant, be preferably and be selected from graphite, tungsten disulfide, the fluoro-resin beyond mica, tetrafluoroethylene, boron nitride, at least a estimation lubricant in fluorographite and soccerballene.In addition, consider from the angle that reduces friction, in composition, the content of solid lubricant is preferably 10vol% or following.
As inorganic additives, be preferably and be selected from SiC, aluminum oxide, Si 3N 4, TiO 2, SiO 2, calcium carbonate, at least a inorganic additives in barium sulfate and calcium phosphate.In addition, consider from the angle of abrasion resistance properties, in composition, the content of inorganic additives is preferably 1 to 5vol%.
Sliding material composition of the present invention can be as the coat on the machine material surface of slide unit.Especially, to be adapted at matching slide unit be used to being coated in sliding surface in the situation of rubber to sliding material composition of the present invention.As the pairing slide unit, specifically example goes out the seal assembly for the hub bearing part of vehicle.
Base material to slide unit of the present invention has no particular limits, but is preferably the material be selected from iron and steel, stainless steel, cast iron, copper, copper alloy, aluminium, aluminium alloy, rubber, plastics and pottery.Shape to material has no particular limits, and can be tabular or tubulose.
As the formation method of coat, can apply, for example, by the solvent of composition of the present invention and resin, form film, the method for then curing described film under the stoving temperature of resin with known method such as aerial spraying etc.In addition, in order to reinforce coat, can be to before substrate surface, carrying out the surface roughening processing before coating, or can between base material and coat, bonding coat be set.The thickness of coat is preferably 5 μ m to 30 μ m, and the degree of roughness of coat is had no particular limits, and still, is preferably 0.3 μ m Ra to 3 μ m Ra.
Lubricating condition to slide unit of the present invention has no particular limits, can be used in oil lubrication, grease lubrication or unlubricated in any condition under.
Embodiment
<embodiment 1 to 9 and comparative example 1 to 7 >
After SUS base material (the about 0.8mm of thickness) is carried out to Shot Blasting, to composition shown in the SUS base material spraying lower list 1 that approximately 15 μ m are thick.Incidentally, by Ajinomoto Co., the AmihopeLL(registered trademark of Inc.) as N ω-lauroyl-1B, Hitachi Chemical Co., the HPC-5300 of Ltd. is as polyamidoimide (PAI) resin.The average particle size particle size of graphite is 1 μ m, and the average particle size particle size of molybdenumdisulphide is 1.0 μ m.After by the spraying film forming, the film obtained is cured to prepare specimen under 200 ℃.
To the test that reciprocatingly slides of each specimen in embodiment and comparative example, measure frictional coefficient and the abrasion loss of each specimen.Specimen to embodiment 5 is carried out the friction torque test.The test experiments that reciprocatingly slides the results are shown in table 1, and the friction torque test result is shown in Fig. 3.
<test reciprocatingly slides >
Testing tool: the tester that reciprocatingly slides (Fig. 1)
Load: 9.8N
Stroke: 5mm
Frequency: 5Hz
Reciprocal time: 200 times
Temperature: room temperature
Lubricated: the fat coat
Speed: 50m/s
The material of pairing slide unit: rubber (NBR)
Experimental result sees the following form 1
Figure BDA0000368520320000101
As can be seen from the above table, in every kind of situation of the composition that uses embodiment, frictional coefficient is all low during startup and in sliding process, and all abrasion resistance properties is outstanding.
<friction torque test >
By using the trier as shown in Fig. 2 (a) and 2 (b), by in the scope of 100rpm to 800rpm, changing the bearing revolution, effect to torque reduction in the sliding material composition that uses embodiment 5 and the situation of not using sliding material composition (that is, only having SUS) contrasts.
Test result is shown in Fig. 3.
In the situation that the sliding material composition in using embodiment 5, the low effect of the maximum friction torque drop obtained when rotating speed is 400rpm is 4.5%.
Although with reference to specific embodiment, the present invention is described in detail, can to carry out various changes and modifications be apparent in the situation that do not break away from essence of the present invention and scope thereof for a person skilled in the art.The Japanese patent application No.2011-032811 that the application submitted to based on February 18th, 2011, whole subject contents of described Japanese patent application are drawn for reference at this.

Claims (13)

1. composition of the sliding material for slide unit, the pairing slide unit of described slide unit consists of rubber, and this sliding material composition comprises:
Adhesive resin;
5 to 25vol% N ω-monoacyl basic aminoacids;
5 to 25vol% molybdenumdisulphide; And
5 to 20vol% tetrafluoroethylene.
2. sliding material composition according to claim 1,
Wherein, the ratio of the content of the content of described tetrafluoroethylene and described molybdenumdisulphide is 0.5 to 2.0 by volume.
According to claim 1 or 2 state the sliding material composition,
Wherein, the total content of described molybdenumdisulphide and described tetrafluoroethylene of take is X, and the content of described N ω-monoacyl basic aminoacids of take is Y, and the ratio of described X and described Y meets relational expression 2≤X/Y≤3 by volume.
4. according to the described sliding material composition of any one of claims 1 to 3, also comprise 10vol% or the following at least a solid lubricant be selected from graphite, tungsten disulfide, mica, described tetrafluoroethylene fluorine resin, boron nitride, fluorographite and soccerballene in addition.
5. according to the described sliding material composition of any one of claim 1 to 4, also comprise at least a SiC of being selected from, aluminum oxide, Si 3N 4, TiO 2, SiO 2, the inorganic additives in calcium carbonate, barium sulfate and calcium phosphate.
6. according to the described sliding material composition of any one of claim 1 to 5,
Wherein, described adhesive resin is at least a resin be selected from polyamide-imide resin, polyamide resin, resol, polyacetal resin, polyether-ether-ketone resin and polyphenylene sulfide.
7. slide unit, the pairing slide unit of this slide unit consists of rubber, and described slide unit comprises:
Base material, the material of this base material in being selected from iron and steel, stainless steel, cast iron, copper, copper alloy, aluminium, aluminium alloy, rubber, plastics and pottery forms; And
Coat, this coat is arranged on the surface of described base material, and comprises:
Adhesive resin;
5 to 25vol% N ω-monoacyl basic aminoacids;
5 to 25vol% molybdenumdisulphide; And
5 to 20vol% tetrafluoroethylene.
8. slide unit according to claim 7,
Wherein, in described coat, the ratio of the content of described tetrafluoroethylene and the content of described molybdenumdisulphide is 0.5 to 2.0 by volume.
9. according to the described slide unit of claim 7 or 8,
Wherein, in described coat, the total content of described molybdenumdisulphide and described tetrafluoroethylene of take is X, and the content of described N ω-monoacyl basic aminoacids of take is Y, and the ratio of described X and described Y meets relational expression 2≤X/Y≤3 by volume.
10. according to the described slide unit of any one of claim 7 to 9,
Wherein, described coat comprises 10vol% or the following at least a solid lubricant be selected from graphite, tungsten disulfide, mica, described tetrafluoroethylene fluorine resin, boron nitride, fluorographite and soccerballene in addition.
11. according to the described slide unit of any one of claim 7 to 10,
Wherein, described coat comprises at least a SiC of being selected from, aluminum oxide, Si 3N 4, TiO 2, SiO 2, the inorganic additives in calcium carbonate, barium sulfate and calcium phosphate.
12. according to the described slide unit of any one of claim 7 to 11,
Wherein, described adhesive resin is at least a resin be selected from polyamide-imide resin, polyamide resin, resol, polyacetal resin, polyether-ether-ketone resin and polyphenylene sulfide.
13. according to the described slide unit of any one of claim 7 to 12,
Wherein, described pairing slide unit is the sealing member for the hub bearing section of vehicle.
CN2012800098066A 2011-02-18 2012-02-16 Sliding material composition and sliding member Pending CN103415604A (en)

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