EP2746369B1 - Moyen destiné à être mélangé dans un lubrifiant pour une installation technique, concentré destiné à être mélangé dans un lubrifiant pour une installation technique - Google Patents

Moyen destiné à être mélangé dans un lubrifiant pour une installation technique, concentré destiné à être mélangé dans un lubrifiant pour une installation technique Download PDF

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Publication number
EP2746369B1
EP2746369B1 EP13194949.7A EP13194949A EP2746369B1 EP 2746369 B1 EP2746369 B1 EP 2746369B1 EP 13194949 A EP13194949 A EP 13194949A EP 2746369 B1 EP2746369 B1 EP 2746369B1
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EP
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Prior art keywords
concentrate
oil
agent
addition
fuel
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EP13194949.7A
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German (de)
English (en)
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EP2746369A1 (fr
Inventor
Stefan Bill
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Rewitec GmbH
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Rewitec GmbH
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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
    • C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
    • C10M125/26—Compounds containing silicon or boron, e.g. silica, sand
    • 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
    • C10M125/00—Lubricating compositions characterised by the additive being an inorganic 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
    • C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
    • C10M125/02—Carbon; Graphite
    • 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
    • C10M2201/02—Water
    • 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
    • C10M2201/10—Compounds containing silicon
    • C10M2201/102—Silicates
    • C10M2201/103—Clays; Mica; Zeolites
    • 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
    • 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
    • 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
    • C10N2020/055—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
    • C10N2030/54—Fuel economy
    • 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

Definitions

  • the present invention relates to an agent for admixture in a fuel for a technical system, in particular in a lubricant for a transmission or in a lubricating or fuel for an internal combustion engine. It further relates to a concentrate for admixture in a fuel for a technical system and a fuel for a technical system.
  • lubricants or lubricants In order to prevent or at least delay the wear resulting from the friction, operating materials are used in technical systems which are intended to reduce the friction between the components. For example, this usually uses lubricants or lubricants. These separate the relatively moving components by their surfaces are wetted with a lubricating or sliding film. For this purpose, a variety of lubricants and lubricants have been developed in a variety of compositions and designs.
  • agents or additives have been developed, which are added to the fuel. These are intended to prevent the lubricating or sliding film between the relatively moving components is torn off or destroyed.
  • a means is for example off DE 10 2004 063 835 A1 known. It includes muscovite, K ⁇ Al 2 (OH) 2 [AlSi 3 O 10 ] ⁇ , and kaolinite, Al 2 (OH) 4 [Si 2 O 5 ].
  • a sodium magnesium hydroxide silicate, Na 2 Mg 4 Si 6 O 16 (OH) 2 be provided and optionally an abrasive, such as lizardite, Mg 3 (OH) 4 [Si 2 O 5 ].
  • the agent is basically suitable for admixture into a working fluid of a technical system, wherein the surface properties of the components are changed, in particular it should be achieved that the friction between the relatively moving components should decrease, thereby improving the life of the technical system.
  • a lubricant is in DE 1 644 971 A1 described.
  • X is a large cation
  • Y is a cation of medium size
  • Z is a small cation
  • O is oxygen
  • R is a hydroxyl radical or fluorine used.
  • the compounds are applied as a powder or in admixture with water, oil or graphite for the lubrication of two mutually moving metal parts, which is to prevent seizure of the metallic components.
  • the invention is therefore an object of the invention to overcome these and other disadvantages of the prior art and to provide a means for incorporation into a fuel of a technical system, with which the friction between the relatively moving components of the technical system is reduced.
  • the aim is also that the agent is permanently and stably dispersed in the operating material and that the ingredients of the agent do not stick to any existing filter elements of the technical equipment and thereby be separated from the fuel.
  • the agent should also be easy and inexpensive to produce and handle and as environmentally friendly as possible.
  • the use of the agent according to the invention as an additive in a fuel for a technical system has surprisingly shown that the friction between the relatively moving components of the system in comparison to experiments that have been carried out with operating materials that have no additive according to the invention, significantly reduced is. It has been shown that the constituents of the agent according to the invention bring about a change, in particular a smoothing, of the surfaces of the components moving relative to one another, that is to say of the surfaces. by the admixture of the agent according to the invention, the roughness of the surfaces decreases.
  • the relatively soft components of the agent according to the invention reach between the surfaces of the components moving relative to one another. There they react due to the prevailing temperatures (hot spots) and the resulting pressure with the surfaces of the components, with silicate particles combine with the surfaces of the components and / or stored therein. The surfaces are smoothed, which leads to an improved load distribution between the components.
  • the friction level is therefore reduced overall, in particular the friction torques M R and the roughness characteristics, namely the average roughness R z and the average roughness R a of the surfaces of the components moving relative to one another.
  • the friction torques M R and the roughness characteristics namely the average roughness R z and the average roughness R a of the surfaces of the components moving relative to one another.
  • the agent according to the invention can moreover be permanently and stably dispersed in the working substance, ie the settling behavior of the constituents of the agent according to the invention in the working substance is markedly reduced.
  • long-term stable dispersions can be produced inexpensively because the effect of the composition according to the invention is ensured over a long period of time.
  • the agent according to the invention is thus characterized by a high level of reliability. Overall, a permanently good lubrication of a technical system or a tribological system with low friction is ensured.
  • the preferably paste-like agent according to the invention can be admixed, for example, with a lubricant for a transmission, in particular a wind turbine gearbox or a marine gearbox, or a lubricant or fuel for an internal combustion engine.
  • the admixture into a working substance of a technical plant may comprise, for example, the following steps: In a first step, a defined amount of the paste is mixed with an equally defined amount of a carrier material, so that a concentrate is formed. This is then supplied in a predefined amount of a likewise defined amount of a working substance in order to achieve a predetermined concentration of the agent according to the invention relative to the total weight of the working substance contained in the plant.
  • the carrier material of the concentrate may be a suitable lubricant. Depending on the application, however, it is preferable to use as a carrier material the operating material which is used in the technical system.
  • the agent according to the invention is present in such a concentration that - based on the total weight of the fuel contained in the plant - a predefined plant and fuel-specific final concentration (in percent by weight, wt .-%) is achieved.
  • the admixture of the agent according to the invention in a fuel can be carried out before the first use of a technical system. But it is also possible to use the agent according to the invention in existing plants by this is subsequently admixed with the fuel.
  • the agent according to the invention shows its friction-reducing effect during the ongoing operation of a technical installation.
  • a complex pretreatment of the relatively moving components prior to their installation in the technical system is therefore not required, which has a favorable effect on the manufacturing costs of the system.
  • Three-layer silicates are characterized by their comparatively low hardness. This is particularly advantageous because - especially under the influence of friction and / or pressure - they are readily 29mierbar and adhere well to the surface of the relatively moving parts.
  • natural sodium bentonites are well suited for conditioning the pastes of the present invention.
  • Pyrogenic silicas typically consist of particles with a diameter of 5 nm to 50 nm, the specific surface usually being in the range from 50 m 2 / g to 600 m 2 / g. They are suitable for example as thickeners and they have an abrasive effect against metallic surfaces. Due to their size distribution, the particles of fumed silicas are also suitable to fill the grooves or grooves of a metal surface. The grooves or grooves need not necessarily be caused by wear, but can also represent production-related material defects. In addition, fumed silicas, for example, also act as thixotropic agents and as anti-sedimentation agents, ie the fumed silica contributes to the fact that the agent is permanently and stably dispersed in the operating material.
  • talc Mg 3 (OH) 2 [Si 2 O 5 ] 2
  • talc may be used as a filler, for example, due to its inertness.
  • Graphite is suitable as a solid lubricant due to its greasy feel. This property, and the fact that it is strongly coloring, make it an advantageous constituent of the composition according to the invention.
  • the means according to the invention is particularly suitable for changing the surface structure of relatively moving components of a technical installation in such a way that surface roughnesses are smoothed. This achieves a reduction in the friction between the components of the technical system which are moved relative to one another.
  • the means according to the invention permanently and reliably prevents a lubricating or sliding film adhering to the relatively moving components from being torn off or being destroyed, so that friction losses can be reduced overall.
  • An embodiment of the agent according to the invention provides that constituent A is a natural or chemically modified muscovite and / or a natural or chemically modified phlogopite.
  • Natural muscovite and natural phlogopite are advantageously very resistant to high temperatures, water, acids and bases, have low thermal expansion coefficients, and are characterized by a relatively low hardness, so that the presence of at least one of these natural mica advantageously affects the properties of the inventive composition ,
  • natural muscovite and natural phlogopite can be chemically modified, whereby the properties of these mica can be adjusted depending on the application.
  • the characteristics of the agent according to the invention can be adjusted precisely and user-specifically.
  • the chemically modified phlogopite is an amino-silane-modified phlogopite.
  • the properties of the agent according to the invention can be further specified and adapted to predetermined conditions that must be met by a technical system.
  • the chemically modified phlogopite may also be provided with a polyamide-matched surface coating.
  • Such chemically modified phlogopites are used, for example, as a filler in the composition according to the invention. They are available in different particle sizes, so that, for example, the consistency of the agent can be influenced by a suitable choice of the particle size. Furthermore, the filterability of the agent can be adjusted accordingly.
  • composition provides that the bentonite is chemically modified.
  • the inorganic cations of the intermediate layers are exchanged for polar, organic molecules, for example quaternary ammonium cations.
  • This hydrophobing allows the bentonite to swell in non-polar liquids. This can be advantageous if predominantly nonpolar solvents are used in the preparation of the composition according to the invention.
  • Such bentonite derivatives also referred to as organobentonites, can advantageously be used in the composition according to the invention as thixotropic thickeners and / or as anti-sedimentation agents.
  • composition according to the invention provides that the fumed silica is chemically aftertreated.
  • the silica can be rendered hydrophobic, which is advantageous insofar as such a silica, for example, also against blocking, i. against the sticking together of two surfaces, may be effective as antiblocking agent.
  • Yet another embodiment of the agent according to the invention is characterized by at least one further ingredient C selected from the group consisting of carbon black, organic carbonates, water and dispersants.
  • Carbon black has in the agent of the invention primarily a coloring function.
  • the agent contains bentonite
  • a swelling agent or activator is required because the bentonite (s) must first be slurried.
  • This swelling agent or activator may e.g. an organic carbonate, possibly mixed with water.
  • Particularly suitable dispersants are organomodified siloxanes.
  • modified polyethers can be used.
  • the dispersants ensure that a stable dispersion is provided, ie that sedimentation of the components of the agent according to the invention dispersed in the carrier material and / or the working substance is effectively prevented.
  • This is important not only for the reliable and lasting effect of the agent according to the invention in the technical system, but also with regard to the storage and transport of the composition according to the invention.
  • sedimentation over a long period of time must be prevented.
  • the agent according to the invention can be added directly to the equipment, whether directly or via a concentrate, even after a prolonged storage period without pretreatment.
  • organic carbonate is propylene carbonate. This is particularly advantageous as a swelling agent for the bentonite or used, especially in combination with water.
  • constituents A, B and C have particle sizes of less than 25 ⁇ m, preferably less than 8 ⁇ m, particularly preferably less than 2 ⁇ m.
  • the particle size of the constituents of the composition according to the invention is rather smaller than the pore diameter of the typically present filter elements.
  • the particle sizes of all components A, B and C can therefore be selected such that the particles are all filter-filter.
  • the agent according to the invention can thus be used even in transmissions equipped with filter systems or plant parts, because it is not separated from the fuel.
  • the filters have a significantly longer service life and do not need to be cleaned or replaced.
  • the particle sizes A, B and C provided according to the invention effectively prevent agglomeration of the particles. This is particularly advantageous because both filtering out too much, i. non-filterable particles, as well as the filtering out of the non-filterable agglomerates have the consequence that the components of the agent according to the invention are separated from the fuel, so that there is a loss of effect of the agent according to the invention.
  • the choice of the particle size of the components A, B, and C is therefore important in order to ensure that the friction between the relatively moving components of the technical system is permanently reduced ,
  • a concentrate for admixture into a fuel for a technical system comprising a carrier and a means according to at least one of the embodiments described above.
  • the carrier may be a solid or a liquid. However, it is particularly advantageous to choose a liquid carrier, so that the concentrate according to the invention in liquid form is present. In this case, depending on the choice of the carrier and the agent - regardless of the steady-state temperature of the surfaces of the relatively moving components - different viscosities of the concentrate according to the invention can be adjusted.
  • composition according to the invention also apply to the concentrate according to the invention.
  • This can be inexpensively pre-assembled and adjusted to the various needs of technical systems.
  • the handling simplifies for the user of the technical system, because the admixture to the existing fuel is quickly and easily feasible.
  • An advantageously present in liquid form inventive concentrate can for example be mixed in a lubricant of a transmission, in particular a wind turbine gearbox, or in a lubricating or fuel of an internal combustion engine.
  • the admixture takes place in the same way as the refilling of the respective lubricant or fuel. It should be noted only that such an amount of the concentrate according to the invention is admixed with the operating material, that - based on the total weight of the operating fluid contained in the plant - a predetermined, plant and fuel-specific final concentration (in weight percent, wt .-%) of the achieved in the concentrate according to the invention contained agent. Because this can be prefabricated, the handling is extremely simple and reliable.
  • the agent is dispersed in the carrier.
  • the carrier can be advantageously heated to lower its viscosity and thus on the one hand to accelerate the dispersion process and on the other hand to achieve the best possible dispersion.
  • the achieved stable and permanent dispersion of the agent according to the invention in the carrier ensures that the agent according to the invention can act reliably, so that the friction between the relatively moving components of the technical system is reduced.
  • a further embodiment is characterized in that the carrier means is an oil.
  • the carrier can be, for example, a mineral oil, an ester oil or a silicone oil. Different viscosities of the oil are conceivable. In addition, you can Mixtures of different, ideally miscible oils are used as carriers.
  • the carrier is ideally miscible with the fuel, ie the lubricant or fuel to which the concentrate is to be mixed.
  • the presence of at least one of the foregoing dispersants e.g. at least one modified siloxane or at least one modified polyether, particularly advantageous.
  • the carrier agent is the operating material.
  • this embodiment is particularly advantageous when it is known that the already contained in the technical system operating material is not ideally miscible with standard carriers used.
  • the object is achieved by a fuel having an agent according to at least one of the previously described embodiments or a concentrate according to at least one of the previously described embodiments.
  • an agent according to the invention or a concentrate according to the invention can be admixed with the entire volume of working fluid to be filled into a technical installation before the operating material is introduced into the technical installation.
  • This can be particularly advantageous when the filling of a lubricant or fuel in the technical system - and consequently also the admixture of an agent or concentrate according to the invention in the fuel - is associated with considerable effort and / or the technical system has not yet put into operation has been.
  • an agent according to the invention is prepared by at least one component A having at least one component B and at least graphite as component C wet-ground in a stirred ball mill or bead mill, wherein - taking into account the filter pore size of the technical system in whose operating material the inventive agent or concentrate to be mixed - the desired particle size is to be preset.
  • the inventive agent thus obtained is typically in the form of a paste.
  • the white oil can be heated to 50 ° C to 70 ° C directly in the stirred ball mill or bead mill.
  • the agent according to the invention and the white oil are stirred in the stirred ball mill or bead mill at a temperature between 50 ° C. and 70 ° C.
  • the thus-obtained concentrate of the present invention which is usually in liquid form, is easy to handle and can be used immediately. Because a stable dispersion is present, storage is also easily possible.
  • the concentrate according to the invention can also be filled at a later time in smaller quantities, without previously having to be redispersed, for example by shaking the container.
  • Aerosil® OX50 200 g of Aerosil® OX50, 360 g of Trefil® 1232, 360 g of MICA SFG70, 30 g of Carbopower® SGN 18 and 2 g of special black (carbon black) are ground in a bead mill to a particle size of 5 to 7 ⁇ m.
  • 120 g Claytone® 40, 25 g propylene carbonate, 1.25 g water, 160 g Aerosil® 200, 500 g talc, 360 g MICA SFG70, 5 g Carbopower® SGN 18, 2 g special black (carbon black) and 350 g TEGOMER® DA 646 are ground in a bead mill to a particle size of 5 - 7 microns.
  • Aerosil® 200 540 g of MICA SFG70, 30 g of Carbopower® SGN 18 and TEGOMER® DA 646 are ground to a particle size of 1 ⁇ m in a bead mill.
  • the technical system may be a transmission used, for example, in wind turbines, in ships, in motor vehicles or industrial plants.
  • the gearbox which is usually housed in a sealed housing, comes with a Lubricated fuel. This is, for example, an oil, with which the concentrate was mixed.
  • the concentrate is admixed with the agent according to the invention, which reliably prevents tearing off of the lubricating film on the surfaces of the relatively moving components of the technical system or of the transmission. This is achieved in particular by a smoothing of the surfaces, accompanied by a reduction of the coefficient of friction and the steady-state temperature of the transmission components.
  • the concentrate according to the invention is admixed with the lubricating oil already present in the transmission, the concentration of the concentrate being about 2 g per liter of existing lubricating oil.
  • the grease is first heated to 50 ° C to 70 ° C before mixing. Subsequently, 3 g of concentrate per 100 g of grease are added.
  • the agent according to the invention can be mixed into a predefined volume of lubricating oil or engine oil taken from the transmission or engine and the concentrate thus produced fed to the oil remaining in the transmission or engine become.
  • the effect according to the invention in particular the surface smoothing of the rubbing parts, occurs during normal operation of the gearbox or motor.
  • the concentrate is admixed with 3% by weight, based on the weight of the bonded coating base with which the relatively moving working components of a technical system are to be subsequently coated.
  • Movement form / type Rolling with 10% slip
  • Sample configuration Disc / disc (line contact 7 mm)
  • Disc each ⁇ 45 mm, width 10 mm, ground, average roughness R z approx. 1.0 ⁇ m Max. pressing: 1496 MPa at 4800
  • N Speed Peripheral speed 5 m / s, 10% slip, 2108 rpm left shaft, 1897 rpm right shaft
  • Duration of test 20 h 20 min tempering: Oil temperature constant 85 ° C Lubrication: Circulating lubrication without filter Humidity: approx. 25 - 35% rel. F.
  • Frictional force profile online
  • temperature online
  • Enema Graded load increase, every 5 min by 1000 N to test load is reached
  • Oil 1 Agip Blasia 150 (low viscosity ISO VG 150)
  • Oil 2 Agip Blasia SX 320 (high viscosity ISO VG 320)
  • the friction coefficient ⁇ max or ⁇ min was calculated as the quotient of the measured frictional force F R and the normal force of 4800 N.
  • the addition of the concentrate according to the invention according to embodiment 1 shows the clearest effect.
  • the friction level is reduced by approx. 23% (cf. FIG. 1 , Entry 2).
  • the topography measurement by means of white light interferometry shows a clear smoothing of the surfaces of the loaded specimens, compared to the run with untreated oil 1.
  • FIGS. 2A, 2C show scanning electron micrographs of the loaded surfaces of the specimens after running using the commercial oil 1 ( FIGS. 2A, 2C ) and after running using the commercial oil 1 with the addition of 0.2 wt .-% of the concentrate according to the invention according to Embodiment 1.
  • FIG. 2B shows that the surface of the specimen after loading using oil 1 with the addition of 0.2 wt .-% of the concentrate according to the invention according to Embodiment 1 is significantly finer.
  • the grooves in the direction of movement are weaker.
  • the holes in the specimen material are smaller and show no cracks.
  • FIG. 3 shows that the steady-state temperature of the loaded test specimen assumes lower values when a concentrate according to the invention according to one of the embodiments 1 or 2 is added to the commercial oil 1.
  • a concentrate according to the invention according to one of the embodiments 1 or 2 is added to the commercial oil 1.
  • the addition of a concentrate according to one of the embodiments 1, 2 or 4, wherein embodiment 4 does not fall within the scope claimed here leads to a lowering of the steady state temperature of the loaded specimen.
  • Movement / shape Rolling with 20% slip
  • Sample configuration Disc / disc (line contact 8 mm)
  • Disc each ⁇ 45 mm, width 10 mm, ground, average roughness R z approx. 2.8 ⁇ m Max. Pressure: 1278 MPa at 4000
  • Speed Peripheral speed 5 m / s, 20% slip, 2108 rpm left shaft, 1686 rpm right shaft
  • Duration of test 61 h (3 x 20 h 20 min) tempering: Oil temperature constant 85 ° C, Lubrication: Circulating lubrication without filter Humidity: approx. 25 - 35% rel.
  • Measured variables Frictional force profile (online), temperature (online)
  • Enema Graded load increase, every 5 min by 1000 N to test load is reached
  • Oil 2 Agip Blasia SX 320 (high viscosity ISO VG 320)
  • the frictional force F R initially decreases rapidly from 260 N to 235 N. After the first dismantling after 20 h, the value is much lower at about 210 N. Subsequently, a continuous decrease to a final value of 180 N is observed (see Table 4).
  • the commercial oil 2 the frictional force F R and thus the coefficient of friction ⁇ compared to pure commercial oil significantly reduced (see Table 4).
  • the coefficient of friction ⁇ max or ⁇ min was determined as the quotient of the measured frictional force F R and the normal force of 4000 N.
  • the frictional force F R decreases significantly within the first 6 h.
  • the initial value of the frictional force F R is approximately 285 N. After an exposure time of 5 h the frictional force F R has already dropped to 145 N. After 16 h, an almost constant frictional force F R of 120 N has been established.
  • the friction level is reduced by about 33%, compared to the stress test using the untreated oil 2.
  • the steady state temperature of the specimen drops from about 125 ° C to 100 ° C, d. H. about 20%.
  • the 60-hour continuous run with the higher-viscosity oil 2 shows that the system is stable after approx. 16 h and has entered under the given load conditions. There are no signs of increased wear compared to the untreated oil 2 test run. The results of the scanning electron microscopy studies described below demonstrate this.
  • the steady-state temperature of the loaded test specimen also decreases if the concentrate according to the embodiment 4, which does not fall within the scope of protection claimed here, is added to the commercially available oil 2 (see Table 4). After a loading time of 5 h, the steady-state temperature of the test specimen decreases significantly. After 16 h, the steady-state temperature is about 100 ° C., which is well below about 125 ° C., the temperature which was established using the untreated oil 2.
  • FIG. 5 Scanning electron micrographs of the specimens after 60 h are in FIG. 5 shown, where FIG. 5A the surface of the loaded using the untreated oil 2 Test specimen shows.
  • FIG. 5B shows the surface of the loaded using the oil 2 with the addition of 0.2 wt.% Of the concentrate according to Embodiment 4, which does not fall within the scope claimed here, loaded specimen.
  • the NEDC test according to RL 70/220 / EWG showed for new cars of the types VW Golf 1.4 TFSI and Ford Mondeo 2.5T with gasoline engines according to EURO 5, that the emission of particle mass or the number of particles by the addition of 12 g (VW Golf) or 18 g (Ford Mondeo) of the concentrate according to embodiment 4, which does not fall within the scope claimed here, the vehicle VW Golf by 28% and 41% and the vehicle of the type Ford Mondeo 46% and 80%, respectively.
  • the fuel consumption was reduced by up to 2% compared to the operation of the vehicles with conventional engine oil without the addition of the concentrate according to the invention.
  • the invention relates to a means for admixture in a fuel for a technical plant, a concentrate for admixture in a fuel for a technical system and a fuel.
  • An agent according to the invention contains at least one constituent A selected from the group of three-layer silicates, at least one constituent B consisting of a fumed silica and graphite.
  • a concentrate according to the invention and a fuel according to the invention By means of the invention, a concentrate according to the invention and a fuel according to the invention, the tearing off of the lubricating film on the surfaces of relatively moving working components of a technical installation is reliably prevented. This is achieved in particular by a smoothing of the surfaces, accompanied by a reduction of the friction coefficient and the steady-state temperature of the working components. Furthermore, it is ensured that the constituents of the agent according to the invention, of the concentrate according to the invention and of the working fluid according to the invention do not agglomerate, so that they filter the filters of the technical equipment, e.g. As a wind turbine gearbox or an internal combustion engine, can happen.
  • the constituents of the agent according to the invention, of the concentrate according to the invention and of the working fluid according to the invention do not agglomerate, so that they filter the filters of the technical equipment, e.g. As a wind turbine gearbox or an internal combustion engine, can happen.

Landscapes

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

Claims (10)

  1. Produit destiné à être ajouté à un carburant pour une installation technique, contenant :
    - au moins un composant A sélectionné dans le groupe des silicates à trois couches,
    - au moins un composant B constitué d'un acide silicique pyrogéné et
    - du graphite.
  2. Produit selon la revendication 1, caractérisé en ce que le composant A est une muscovite naturelle ou chimiquement modifiée et/ou un phlogopite naturel ou chimiquement modifié.
  3. Produit selon la revendication 2, caractérisé en ce que le phlogopite chimiquement modifié est un phlogopite modifié avec un silane aminé.
  4. Produit selon l'une des revendications précédentes, caractérisé par au moins un autre composant C, sélectionné dans le groupe constitué du noir de carbone, du carbonate organique, de l'eau et d'un agent dispersant.
  5. Produit selon la revendication 4, caractérisé en ce que le carbonate organique est du carbonate de propylène.
  6. Concentré destiné à être ajouté à un carburant pour une installation technique, contenant un agent porteur et un produit selon l'une des revendications 1 à 5.
  7. Concentré selon la revendication 6, caractérisé en ce que le produit est dispersé dans l'agent porteur.
  8. Concentré selon la revendication 6 ou 7, caractérisé en ce que l'agent porteur est une huile.
  9. Concentré selon la revendication 6 ou 7, caractérisé en ce que l'agent porteur est le carburant.
  10. Carburant avec un produit selon l'une des revendications 1 à 5 ou avec un concentré selon l'une des revendications 6 à 9.
EP13194949.7A 2012-12-21 2013-11-28 Moyen destiné à être mélangé dans un lubrifiant pour une installation technique, concentré destiné à être mélangé dans un lubrifiant pour une installation technique Active EP2746369B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012113070.1A DE102012113070A1 (de) 2012-12-21 2012-12-21 Mittel zur Beimischung in einen Betriebsstoff für eine technische Anlage, Konzentrat zur Beimischung in einen Betriebsstoff für eine technische Anlage und Betriebsstoff

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EP2746369A1 EP2746369A1 (fr) 2014-06-25
EP2746369B1 true EP2746369B1 (fr) 2017-10-25

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US (2) US10240104B2 (fr)
EP (1) EP2746369B1 (fr)
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DE102012113070A1 (de) * 2012-12-21 2014-06-26 Rewitec Gmbh Mittel zur Beimischung in einen Betriebsstoff für eine technische Anlage, Konzentrat zur Beimischung in einen Betriebsstoff für eine technische Anlage und Betriebsstoff

Citations (1)

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Also Published As

Publication number Publication date
CN103881787B (zh) 2017-07-11
CN103881787A (zh) 2014-06-25
US20140179569A1 (en) 2014-06-26
DE102012113070A1 (de) 2014-06-26
US10240104B2 (en) 2019-03-26
US20190218468A1 (en) 2019-07-18
US11091717B2 (en) 2021-08-17
EP2746369A1 (fr) 2014-06-25

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