WO2009071223A1

WO2009071223A1 - Composite material with lubricating properties

Info

Publication number: WO2009071223A1
Application number: PCT/EP2008/009987
Authority: WO
Inventors: Jiri Rasner
Original assignee: Eads Deutschland Gmbh
Priority date: 2007-12-04
Filing date: 2008-11-25
Publication date: 2009-06-11
Also published as: DE102007058645B4; DE102007058645A1

Abstract

The present invention relates to a composite material having lubricating properties based on polymeric matrices and lubricants having an active surface. The invention further relates to a method for the production of said composite materials and the use thereof for coating sliding bearings, joint bearings, press connections, distancing plates, pins, bushings, frictional seals, self-adhesive insulations and films, seat rails, door-closing mechanisms, woven mats made of steel, ceramic, or plastic, and anti-friction protection for CFRP components.

Description

Composite material with lubricating properties

The present invention relates to a composite having lubricating properties based on polymeric matrices and lubricants having an activated surface. The invention further relates to a method for producing these composite materials and their use for coating plain bearings, shafts, spherical bearings, press connections, spacer plates, bolts, sleeves, friction seals, self-adhesive insulation and films, seat rails, door closing mechanisms, steel fabric mats, ceramics or plastic, or as wear protection for fiber composites.

Composites with lubricating properties or sliding properties are known in different embodiments. Typically, these composites consist of a polymeric matrix and one embedded therein

Lubricant. The lubricating properties should in the case of a coating of different support materials for their required lubricity or lubricity, especially in dry running, i. without additional liquid lubricant.

DE 195 45 425 describes a two-layer slide bearing material which has a lubricant-containing plastic sliding layer. The polymeric matrix here comprises a polyamide which is mixed with polytetrafluoroethylene (PTFE) and other additives in a proportion of 3 to 40% by volume. Also, DE 42 17 319 discloses a sliding bearing in which the sliding layer consists of PTFE, which is embedded in a thermosetting epoxy resin; In the international patent application WO 03/048594, the sliding layer comprises, in addition to PTFE fibers, polyethersulfone fibers with a twisted structure, which are provided with an epoxy resin. U.S. U.S. Patent No. 5,325,732 also describes self-lubricating composites composed of a polymer such as an epoxy resin and a

Lubricants such as PTFE may exist. A coating material for the production of Slide bearing elements, which consists of an epoxy resin and a mixture of PTFE and a textile structure, is described in DE 26 54 644 Al. U.S. Patent No. 4,867,889 describes self-lubricating sliding bearings, the PTFE, and another fibrous material that can be bonded to a polymeric material, such as an epoxy, and further comprises at least 5% by weight carbon powder.

DE 21 04 605 describes slide bearings in which the bearing surface layer contains a solid lubricant of polytetrafluoroethylene and fibers of an aromatic polysulfone or graphite. U.S. On the other hand, Patent No. 6,180,574 discloses sliding bearings and coatings in which the coating consists of a solid lubricant dispersed in an acrylate. Also U.S. U.S. Patent No. 3,996,143 describes coating materials of acrylates, solid lubricants such as PTFE and fillers.

Is an object of the present invention is therefore to provide a composite material with lubricating properties that can be manufactured at low cost and high (1000 hours deposition in 70 ° C Skydrol ® hydraulic fluid and 2 weeks of water deposit (T = 23 ⁰ C)) chemically and corrosive Resistant.

Another object is that the composite is easy to apply and to work mechanically and thus the contact surfaces can be optimally adapted geometrically.

Another object is that the composite material has improved lubricating properties particularly under pressure (up to 100 MPa) or at low temperatures (<- 40 ⁰ C) or high temperatures (> 150 ° C). Yet another object is that the composite optimally compensates for geometrical mismatches and tolerance deviations of the contacting surface during operation.

Another object is that the composite material is particularly suitable for the repair of wear points, especially on site, since no auxiliaries are needed.

Another object is that the composite material is attenuation-reducing up to> 100 MPa under shock load.

These and other objects have been achieved according to the present invention by embedding an activated surface lubricant in a polymeric matrix. In this case, the composite material further additives such as

Fillers include. This composite with lubricating properties can be applied in desired strength and concentration to surfaces of friction loaded components, particularly in aerospace applications. More preferably, this composite can be applied as a coating to rigid and flexible substrates or can be made and used as a freestanding component (e.g., a socket).

Unlike the prior art, the lubricating-type composite of the present invention comprises a polymeric matrix of a suitable polymer, preferably an epoxy resin, and a lubricant embedded therein, the lubricant having an activated surface. Through the use of activated surface lubricants, the composite of the present invention has a number of improved properties. First, it should be noted that the composite material according to the invention has excellent sliding properties, especially without additional liquid lubricant. These excellent sliding properties are also reflected in a prolonged durability, wherein the lubrication caused by the material remains constant with increasing wear of the sliding layer and thus the time to replacement or repair of corresponding coated components is extended. The composite of the present invention also has excellent properties under wear conditions such as reciprocation, which may be caused by, among other things, vibrations. This composite material is also high pressure resistant, resistant to high and low temperatures, wear-resistant and maintenance-free and also easy to repair and machine. Furthermore, the composite material has a resistance to water, corrosion, hydraulic

Liquids such as Skydrol®, kerosene and antifreeze on. Furthermore, the new composite material may also be applied to plain bearings, bolts, sleeves, door closing mechanisms, steel plates, self-adhering insulation, seat adjusters, cylinder-piston complexes, friction seals, gears, etc., or components to be coated thereof, optionally at a greater thickness which results in their weight being reduced at the same strength. The composite material can also be produced and provided as bulk material.

In one embodiment, the new composite material is preferably applied only to a component of the component that is in relative movement to another. Furthermore, the new composite material can be processed substantially without affecting the sliding properties, ie the Sliding properties are not adversely affected by mechanical processing substantially. This mechanical workability of the composite material allows individual adaptation to carrier materials coated with the sliding layer, so that any desired or required strength and / or any desired or required running clearance can be adjusted, for example, by subsequent processing. This composite material has a low coefficient of friction and is resistant to water, corrosion, hydraulic fluids such as Skydrol®, kerosene and antifreeze.

For the polymeric matrix of the composite of the present invention, those polymers can be used that will not melt, deform, or dissolve substantially under pressure or higher and lower temperatures encountered in industrial applications. The matrix can be selected according to its polymer properties to provide properties such as plasticity, flexibility, strength, elasticity, ductility, high or low density,

Temperature resistance at high or low temperatures or adhesiveness to change. In certain embodiments, organic polymers having thermoset properties and crosslinked structures are useful for the inventive matrix. These include phenolic or phenol-formaldehyde (PF) polymer resins, melamine-formaldehyde (MF) resins, urea-formaldehyde resins, allyl esters such as diallyl phthalate (DAP) or diallyl isophthalate (DAIP), polyimide resins, polyamide resins and epoxy resins. Other examples of polymeric matrices suitable for the present invention include glass / epoxy, glass / polyester, etc. Further, any organic polymer that forms a sufficiently uniform blend with the inventive lubricant may be used in the invention. Preferably, the polymeric matrix of the present composite is one of the widely used thermoset resins commonly used for such purposes. In one embodiment, this matrix may comprise an epoxy resin, for example a polyether resin formed by the polymerization of bisphenol A and epichlorohydrin, which has a high resistance and low

Has shrinkage during curing. Other suitable epoxy resins are all epoxy resins which have the epoxide equivalent weights described below (determined according to ISO 3001), preferably two components are epoxy resin matrices with suitable hardeners.

The epoxy matrix in one embodiment comprises at least one low molecular weight epoxy resin having an epoxide equivalent weight (EEW) of up to 500 g / mol, preferably 100-400 g / mol, more preferably 100-300 g / mol, most preferred an epoxy resin with an EEW of 125-225 g / mol. In another embodiment, the epoxy matrix comprises a mixture of corresponding epoxy resins. The epoxy resin may further optionally be modified with at least one reactive diluent. Preferred embodiments include bifunctional and trifunctional reactive diluents. Other embodiments do not include reactive diluents.

The polymeric matrix, preferably epoxy matrix, may be present in the composite with lubricating properties in an amount of 30-98% by weight, preferably 40-95% by weight, based in each case on the total weight of the composite material according to the invention.

Another embodiment of the present invention uses an epoxy resin having an EEW of 100-500 g / mol, preferably 125-300 g / mol, and most preferably 155-170 g / mol. Furthermore, this embodiment be modified with a trifunctional reactive diluent. A further embodiment uses an epoxy resin having an EEW of 100-450 g / mol, preferably 150-300 g / mol and very particularly preferably 185-200 g / mol. Furthermore, this embodiment may be modified with a bifunctional reactive diluent. Another embodiment uses an epoxy resin having an EEW of 100-400 g / mol, preferably 150-250 g / mol, and most preferably 180-195 g / mol. Furthermore, this embodiment is not modified with a reactive diluent.

An embodiment of the present invention comprises CHS-EPOXY 619 from Spolchemie® (Czech Republic) as epoxide matrix. This epoxy resin is a low molecular weight epoxy resin modified with a trifunctional reactive diluent. In a further embodiment of the present invention, CHS-EPOXY 531 from Spolchemie® (Czech Republic) can be used as the epoxide matrix. This epoxy matrix is a low molecular weight epoxy resin modified with a bifunctional reactive diluent. In a further embodiment of the present invention, CHS-EPOXY 520 from Spolchemie® (Czech Republic) can be used as the epoxide matrix. This epoxy matrix is a low molecular weight epoxy resin which is not modified with a reactive diluent.

Furthermore, the epoxy matrix comprises a hardener such as aliphatic amines, polyaminoamines, Mannich bases, etc., preferably hardeners based on polyalkyleneamines and epoxy resins. Exemplary hardeners include TELALIT hardeners such as TELALIT 1203 or TELALIT 0600 from Spolchemie® (Czech Republic). Preferred embodiments include an epoxy resin and a hardener in a ratio of 100:20 to 100:80 (epoxy resin: hardener). In further Embodiments uses an epoxy resin and a hardener in a ratio of 100: 50 to 100: 60 (epoxy resin: hardener) or 100: 33 to 100: 40 (epoxy resin: hardener).

The lubricants usable for the production of the composite material according to the invention comprise at least one substance selected from the group comprising polytetrafluoroethylene (PTFE), perfluoroethylene propylene copolymer (FEP), perfluoroalkoxy polymers (PFA), polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF), ethylene tetrafluoroethylene ( ETFE) or polytrifluorochloroethylene (E-CTFE), with polytetrafluoroethylene (PTFE) being a preferred embodiment.

The lubricant is preferably powdery or fibrous.

For example, PTFE fibers and powders are commercially available from E.I. DuPont de Nemours and Company or Toray Fluorofibers America under the trade name Teflon®. PTFE is available in various forms such as powder or fibers. Teflon flock fibers are available in various lengths of e.g. 0.1 to about 6.35 mm average length available.

The lubricant should be added in an amount sufficient to achieve the desired lubricity of the coating. In some embodiments, the amount of lubricant should be at least 3% by weight, more preferably at least 5% by weight, based on the total weight of the composite. The lubricant should also be added in amounts such that segregation of the epoxy matrix and lubricant is avoided to obtain a uniform, substantially uniform viscosity of the material. Preferably, this includes Lubricant less than 75% by weight, more preferably less than 60% by weight and most preferably less than 20% by weight, based in each case on the total weight of the material.

Certain embodiments therefore comprise from 3 to 75% by weight and more preferably from 5 to 20% by weight of the lubricant, each based on the total weight of the composite.

According to the invention, the lubricants have an activated surface, whereby harder and stronger composite materials can be achieved. The

Composites also have improved stability and compatibility of the filler with the polymeric matrix, which can improve quality assurance. This can be accomplished by methods of etching the surface of the fluoropolymers such as PTFE, FEP, PFA, PVDF, ETFE, E-CTFE, etc. to achieve improved adhesion to other materials such as the polymeric matrix. Thus, U.S. Pat. For example, U.S. Patent No. 4,744,857 describes an etching process in which fluoropolymer fibers such as polytetrafluoroethylene are etched by immersing the fibers in a sodium naphthalene etching solution. Another etching method using sodium in liquid ammonia is disclosed in U.S. Pat. Patent No. 2,789,063. Through these procedures, a

Surface activation of up to 98% can be achieved and varied as needed to obtain different surface activations as are useful in embodiments of the present invention.

Particular embodiments of the present invention include an epoxy resin and 5-60% by weight activated surface PTFE fibers, based on the total weight of the composite. By contrast, other embodiments include an epoxy resin, 5-20% by weight lubricant, eg PTFE fibers with activated surface and 10 - 20% by weight of a filler, in each case based on the total weight of the composite material. Other embodiments optionally comprise a second filler at 10-20% by weight based on the total weight of the composite.

Preferred fibers comprise a length of about 0.05-6.5 mm, more preferably fibers with a length of about 0.05-3.5 mm, most preferably fibers with a length of about 0.075-0.2 mm ,

In general, in the manufacture of the composites of the present

Invention, a polymeric matrix with the at least one lubricant having an activated surface and optionally other fillers are mixed. If desired, this mixture can be applied to a carrier material and cured to form the composite material.

In a particular embodiment, in preparing the composites of the present invention, one of the matrix components, e.g. an epoxy resin or a hardener with which at least one lubricant having an activated surface and optionally further fillers are mixed. Subsequently, this mixture is optionally mixed with the second matrix component. If desired, this mixture can be applied to a carrier material and cured to form the composite material.

As a further component, the composite material according to the invention with lubricating properties may comprise one or more fillers.

The main task of the fillers in lubricating composites is usually to reduce abrasion in dynamic applications Contact with a mating partner. Since such composites typically have a higher coefficient of friction than PTFE alone, that is, without matrix, it may be desirable to add additional internal lubricant or other functional fillers.

Suitable fillers are in principle all crosslinked or uncrosslinked, organic or organometallic polymers, inorganic compounds, salts or ceramic materials or organically modified ceramic materials or mixtures of these substances, preferably those which show no melting and / or decomposition during the post-processing of the moldings.

Among these, in some embodiments, the organic polymers and inorganic compounds are preferred. These may be natural or synthetic polymers and / or inorganic compounds.

Examples of suitable inorganic compounds are metal oxides, metal carbides and metal sulfides, such as tungsten disulfide, molybdenum disulfide, preferably in powder form, graphite, carbon, bronze, steel powder, alumina, calcium fluoride, calcium carbonate, calcium phosphate, borax and mica or mixtures thereof. Of these, in particular, the sulfides are preferably used as fillers in the present invention in some embodiments.

Suitable organic polymers include at least one selected from the group consisting of polyamide (PA), polyphenylsulfide (PPS), polytetrafluoroethylene (PTFE), polyoxymethyl copolymer (POM), polyimide (PI), polyphenylene sulfide (PPS), polyamide-imide (PAI), polyetheretherketone (PEEK), polyphenylene sulfone (PPSO ₂ ), aromatic polyester and aramid, or mixtures thereof.

The fillers of the composite material according to the invention having lubricating properties may in certain embodiments be present in an amount of 0-50% by weight, preferably 10-40% by weight, based in each case on the total weight of the composite material according to the invention.

In general, the organic fillers have a particle size of <200 .mu.m, preferably a particle size of <150 .mu.m, more preferably a particle size of <75 .mu.m. On the other hand, the inorganic fillers usable in the present invention may have a particle size of> 0.1 μm, preferably a particle size of> 0.25 μm, more preferably a particle size of> 0.4 μm.

Particular embodiments of the present invention include

Epoxy resin, 5 to 20% by weight of surface-activated PTFE fibers and 10 to 20% by weight of PPS powder as filler. In contrast, other embodiments include, in addition to an epoxy resin and 5-20% by weight activated surface PTFE fibers, 10-20% by weight PA powder or 10-20% by weight PTFE powder as filler. Other embodiments may include, in addition to an epoxy resin and 10-20% by weight activated surface PTFE fibers, again 10-20% by weight WS ₂ powder. In some embodiments, the composites may include a second filler. For example, a composite comprising an epoxy resin, 5-20% by weight activated surface PTFE fibers, and as fillers 10-20% by weight WS ₂ powder and 10-20% by weight PA powder or PPS powder. Weight% are each based on the total weight of the composite material. The composite material according to the invention can be used for coating molded parts made of metal, glass, temperature-resistant plastics or synthetic and natural mineral materials or composite materials thereof. They are therefore used for the coating of components subject to friction and wear inside and outside of furniture, doors, window frames, industrial components for private and industrial use, including containers and components for the production of transport devices of all kinds, including Motor vehicles and airplanes into consideration.

Particular preference is given to applications in the field of aviation technology, e.g. as wear protection for CFRP (carbon fiber reinforced plastics) components, door closing mechanisms, bolt and socket devices, seat rails or insulation on wings and other components subject to friction. Above all, however, they can be used for coating moldings which are mechanically finished after their coating, for example by milling, grinding and / or drilling. The composite according to the invention exhibits very particular advantages in coatings, in particular local coating, of friction and wear-stressed components, such as slide bearings, shafts, spherical bearings, sleeves, press connections, bolts, spacer plates, rubbing strips, gears,

Slide guides, cylinder-piston complexes, self-adhesive insulation or films, seat rails, wear protection for CFRP (carbon fiber reinforced plastics) components (eg struts), door closing mechanisms (eg hinges), fabric mats made of steel, ceramic or plastic. Support materials include metal alloys, steel, aluminum and titanium alloys, polymeric materials, ceramics and glass. In embodiments with metallic substrates, the metal substrate may be roughened prior to coating with the composite by chemical surface activation, eg, by phosphating or anodizing, or mechanically, eg, by sand or wet blasting or sanding to improve the adhesion of the composite.

The composite coating having lubricating properties can be applied in any form that ensures that the composite coats the surface of the substrate in the desired manner. For example, For example, the coating may be applied to the surface by spraying or by a brush or roller, by molding or by casting. Another possibility is that the carrier material to be coated is immersed in the composite material with lubricating properties.

The curing of the composite material on the substrate to be coated can be carried out at room temperature or elevated temperatures, depending on the application, for a sufficient period of time, depending on the material, for example 20-36 h, for example 24 h, optionally followed by a heat treatment, for example at about 110. 190 ° C for 2 - 10 h. In one embodiment of the present invention, the curing of the composite on the substrate occurs at room temperature for a period of 24 hours, followed by a heat treatment at 120 ° C for 5 hours. In another embodiment of the present invention, the curing of the composite on the substrate may be at room temperature for a period of 24 hours, followed by heat treatment at 180 ^° C. for 3-4 hours. In another embodiment of the present invention, the curing of the composite on the substrate may be at room temperature for a period of 24 hours, followed by heat treatment at 140 ° C for 4 hours. Subsequently, the material can be like machined as described above and brought to the desired strength. The coating may finally have a thickness of about 0.05-2.0 mm, more preferably 0.05-1.5 mm and most preferably a thickness of 0.1-0.3 mm.

The following are some examples of advantageous embodiments of the material according to the invention,% being given as% by weight, based on the total weight of the composite:

example 1

The epoxy matrix CHS-EPOXY 619 (EEW 155-170 g / mol) is mixed with 10% by weight activated surface PTFE fibers and 10% by weight WS ₂ powder and 10% by weight PPS powder as fillers, and evacuated the mixture to remove trapped air. Thereafter, the hardener TELALIT 1203 in a ratio of 100:60 (epoxy resin: hardener) is added to the mixture and the composite material is applied to a support material.

Example 2

The epoxy matrix CHS-EPOXY 619 (EEW 155-170 g / mol) is mixed with 10 wt% activated surface PTFE fibers and the mixture is evacuated to remove trapped air. Thereafter, the hardener TELALIT 1203 in a ratio of 100:60 (epoxy resin: hardener) is added to the mixture and the composite material is applied to a support material.

Example 3

Coefficients of friction of the composite according to the invention are shown by way of example 1. Ball-on-disk slip tests were carried out at room temperature with a gradual increase in load from 1 N to 2 N, 5 N, and 10 N, respectively each performed 266 turns and a sliding speed of 1 cm / s, so that 4 x 266 cycles = 1064 cycles were achieved with a total test duration of 40 min. Under the same conditions, a comparative material which is commercially available was also tested. Table I below shows the corresponding coefficients of friction for the sliding tests with different loads.

Table I:

Coefficient of friction μ for the coefficient of friction μ for a composite material from Example Comparison Material 1

I N 0.075 0.068

2N 0.073 0.070

5N 0.073 0.074

IO N 0.076 0.077

The invention is not limited to the embodiments described above. For example, it is possible to use another polymeric matrix, other lubricants or fillers or various combinations thereof.

Example 4

The composite of Example 2 according to the invention was subjected to pin-on-plate sliding tests with oscillations at 50 ° C., a frequency of 1 Hz and surface pressures of 5, 10, 15, 25 and 30 MPa on stainless steel. The total test duration was approx. 1.2 h in each case. Low coefficients of friction of μ = 0.05 were obtained under surface pressures of 5 MPa. The following figures show some exemplary applications. It shows:

Fig. 1 a) - d) a socket with a coating according to the invention;

Fig. 2. a fiber composite material with an inventive

Wear protection; and

Fig. 3 is a bolt which is coated with a wear protection according to the invention.

In Fig. Ia and Ib, the dimensions of a socket 10 are shown, which is used for example in the aircraft or helicopter. In the embodiment according to FIG. 1a, the bushing is coated on both the inside and on the front side of the flange 11 with a coating (liner) 1 according to the invention. The corresponding finished component is shown in Fig. 1 c. In the embodiment according to FIG. Ib, only the interior of the bushing 10 is provided with the liner 1; the finished component is shown in Fig. Id accordingly.

Fig. 2 shows a fiber composite material (e.g., a CFRP component) 20 and its coating 1 shown in the right half of the figure for different thicknesses (0.3mm, 0.5mm and 1mm). The coating 1 is very easy to work and can be adapted to the particular application.

In Fig. 3, another example is shown, which shows a bolt 30 with a bushing 31, wherein the bolt 30 is provided with a wear protection 1 according to the invention. The invention is of course not limited to the application examples described in connection with FIG.

Claims

claims

A composite having lubricating properties comprising a polymeric matrix and a lubricant, the lubricant having an activated surface.

2. Composite having lubricating properties according to claim 1, characterized in that the polymeric matrix comprises at least one polymer selected from the group comprising phenolic polymer resin, phenolic

Formaldehyde (PF) polymer resin, melamine-formaldehyde (MF) resin, urea-formaldehyde resin, allyl ester resin, polyimide resin, polyamide resin, or epoxy resin.

3. Composite material with lubricating properties according to one of claims 1 or 2, characterized in that the polymeric matrix

Epoxy resin includes.

4. Composite having lubricating properties according to one of claims 1-3, characterized in that the lubricant is selected from fibers of at least one lubricant selected from the group comprising polytetrafluoroethylene (PTFE), perfluoroethylene propylene copolymer (FEP), perfluoroalkoxy polymers (PFA ), Polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF), ethylene tetrafluoroethylene (ETFE) or polytrifluorochloroethylene (E-CTFE).

5. Composite material with lubricating properties according to claim 4, characterized in that the surface of the fibers is activated by etching.

6. Composite having lubricating properties according to one of claims 4 or 5, characterized in that the lubricant comprises activated PTFE fibers with a length of about 0.05 to 6.5 mm, preferably with a length of 0.075 to 0.2 mm ,

A composite having lubricating properties according to any one of claims 1-6, characterized in that the lubricant is present in a concentration of 3 to 75% by weight, preferably in a concentration of 3 to 20% by weight, based on the total weight of the composite ,

8. Composite with lubricating properties according to any one of claims 3-7, characterized in that the epoxy matrix has an epoxy equivalent weight of up to 500 g / mol, preferably from 125 to 225 g / mol.

A composite having lubricating properties according to claim 8, wherein the epoxy matrix comprises an epoxide equivalent weight of 155 to 170 g / mol.

The composite having lubricating properties of claim 9, wherein the epoxy matrix is further modified with a trifunctional reactive diluent.

11. A composite having lubricating properties according to claim 8, wherein the epoxy matrix has an epoxide equivalent weight of 185 to 200 g / mol.

A composite having lubricating properties according to claim 1 1, wherein the epoxy matrix is further modified with a bifunctional reactive diluent.

13. A composite having lubricating properties according to claim 8, wherein the epoxy matrix comprises an epoxide equivalent weight of 180 to 195 g / mol.

A composite having lubricating properties according to any of claims 1-13, characterized in that the composite comprises an epoxy matrix and a hardener, the epoxy matrix being in a ratio of 100: 20 to 100: 80 to the hardener, more preferably in a ratio of 100: 50 to 100: 60 or 100: 33 to 100: 40 to the curing agent.

15. Composite material with lubricating properties according to one of

Claims 1-14, characterized in that the composite material further comprises an organic and / or inorganic filler, preferably selected from at least one substance from the group comprising polyamide (PA), polyphenylsulfide (PPS), polytetrafluoroethylene (PTFE), polyoxymethyl copolymer ( POM) and tungsten disulfide (WS ₂ ).

16. The composite having lubricating properties according to claim 15, characterized in that the total concentration of the filler is in a range of 0-50% by weight, preferably in a range of 10-20% by weight, based on the total weight of the composite.

17. Composite material with lubricating properties according to one of claims 1-16, characterized in that the composite material has a coefficient of friction of μ = 0.04 to 0.08, preferably a coefficient of friction of μ = 0.045 to 0.055.

18. A method for producing a composite material with lubricating properties, characterized in that a polymeric matrix with at least a lubricant with activated surface is mixed and the mixture is cured.

19. A method for producing a composite material according to claim 18, characterized in that the polymeric matrix is an epoxy resin and (a) a component of the epoxy matrix is mixed with at least one lubricant with activated surface, (b) the second component of the epoxy Matrix is mixed with it and (c) the mixture is cured.

20. The method according to any one of claims 18 or 19, wherein the mixture is applied to a surface of a substrate, then cured to form a coating on the substrate, and is subsequently machined, wherein the coating has a thickness of 0.05 to 2 , 00 mm, more preferably has a thickness of 0.1 to 0.3 mm.

21. Use of a composite material with lubricating properties according to one of claims 1 to 17 for coating plain bearings, shafts, spherical bearings, press connections, spacer plates, bolts, sleeves, friction seals, self-adhesive insulation and films, seat rails, door closing mechanisms, fabric mats made of steel, ceramic or plastic,

Wear protection for CFRP components, in particular for use in aviation technology.

22. Device selected from plain bearings, shafts, spherical bearings, press joints, spacer plates, bolts, sleeves, friction seals, self-adhesive insulation and foils, seat rails, door closing mechanisms, fabric mats made of steel, ceramic or plastic, wear protection for CFRP Ingredients comprising a coating of a composite having lubricating properties according to any one of claims 1 to 17.