Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
  • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B15/00—Layered products comprising a layer of metal
  • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
  • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
  • B32B15/082—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising vinyl resins; comprising acrylic resins
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B15/00—Layered products comprising a layer of metal
  • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
  • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
  • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B15/00—Layered products comprising a layer of metal
  • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B27/00—Layered products comprising a layer of synthetic resin
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
  • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
  • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
  • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
  • B32B7/04—Interconnection of layers
  • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
  • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
  • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
  • B32B9/041—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
  • B32B2260/02—Composition of the impregnated, bonded or embedded layer
  • B32B2260/021—Fibrous or filamentary layer
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
  • B32B2260/04—Impregnation, embedding, or binder material
  • B32B2260/046—Synthetic resin
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
  • B32B2262/06—Vegetal fibres
  • B32B2262/062—Cellulose fibres, e.g. cotton
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
  • B32B2307/554—Wear resistance
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/70—Other properties
  • B32B2307/752—Corrosion inhibitor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2605/00—Vehicles
  • B32B2605/08—Cars

Definitions

• the invention relates to the field of polymer chemistry and relates to a wear material for shaft-hub areas, in particular of rim-hub areas of wheels, which in the area of contact surfaces between a shaft or rim and a hub, such as a wheel in mechanical engineering or in vehicle construction, can be used, and a method for its application.
• rims with hubs are screwed or connected to one another for wheel fastening, which consist of the same or different material
• wheel fastening consist of the same or different material
• Oils, greases and waxes as wear material between rim and hub can not be used, for example, in motor vehicles in the immediate vicinity of brakes.
• a painting of the rim and / or hub surface creates no remedy for the problems.
• a lacquer layer is damaged quickly, whereby its protective function is no longer guaranteed. In the damaged areas, the lacquer layer is corroded and "rusted back."
• commercial lacquers have a low glass transition temperature and heat resistance due to their chemical structure and composition, and can be applied to painted parts of the rims and hubs under pressure and heat, such as in the rim Hub region in the vicinity of brakes in mountain driving the case, the paint layer with the substrate surface of the second, unpainted part or the paint layers stick together or "baked", which is just to be avoided.
• the use of ceramic sprays which are sprayed onto the contact surfaces of the hub and rim, is known, above all in the material combination of light metal rims and steel hubs. The ceramic spray is usually sprayed onto the surface of the wheel hub.
• Increasingly lightweight carbon fiber composites are combined with metal parts and bolted.
• rims made of carbon fiber composites are also used in the vehicle sector.
• carbon fibers in the composite in the presence of moisture, and especially in the presence of moisture and salts or brines form local elements which are liable to (metal) corrosion and thus to formation, e.g. of rust and therefore lead to the above problems.
• Release layers in the form of film release layers or polymer release layers are well known in practice.
• a separation layer is referred to in the art, a thin layer of artificial material, with the two materials separated from each other " (Wikipedia, keyword separation layer).
• a rim or Autofeige In the context of this invention is to be referred to as a rim or Autofeige following.
• a hub is a machine element that is pushed onto a shaft, an axle or a pin.
• a hub usually consists of a drilled workpiece into which, depending on the application, a bearing ... is inserted ....
• the hub is always part of a shaft-hub connection.
• Corrosion is defined as follows in accordance with DIN EN ISO 8044: "Corrosion is the reaction of a metallic material with its environment, which causes a measurable change in the material and can lead to a deterioration of the function of a metallic component or an entire system. In most cases, the reaction is electrochemical, in some cases it can be chemical or metal-physical. "
• corrosion is also differentiated by the location of its occurrence, such as: contact corrosion, surface corrosion, vibration crack corrosion, crevice corrosion, intergranular corrosion, undercurrent corrosion (see also Wikipedia, keyword corrosion).
• the corrosion of the surface caused by destruction of a metal by electrochemical reactions e.g. through environmental influences.
• Local elements are small-area corrosion elements (or contact elements) that are barely visible to the naked eye. They are significantly smaller than 1 mm 2 . Local elements may be crystallites of an alloy, which are electrically conductively connected to one another both directly and via an electrolyte and form a short-circuited galvanic cell. Local elements can arise at the contact points of two different metals by the action of moisture, eg condensation, and often cause considerable corrosion there. Vulnerable solder joints, welds, riveting, screwing, damaged coatings (eg scratched tinplate) and alloys. "(Wikipedia keyword local element).
• the object of the present invention is to provide a wear material for shaft-hub areas in which corrosion is largely limited or prevented and a caking of the shaft-hub materials is largely prevented, and in the statement of a simple and inexpensive method for Application of the wear material on one or more contact surfaces in the shaft-hub area.
• the wear material according to the invention for shaft-hub regions consists of at least one plastic layer, which is arranged at least partially on the contact surfaces of shaft and hub, wherein the plastic of the plastic layer realized at least a partial electrochemical isolation and separation between the materials of shaft and hub.
• the plastic consists of one or more polymers which are substantially non-polar or non-polar and at least on one of their surfaces substantially less adhesive or anti-adhesive.
• the plastic consists of one or more polymers and / or a polymer blend.
• fluoropolymers or high-performance plastics or other plastics in which even more advantageously as fluoropolymers polytetrafluoroethylene (PTFE), Perfluoroethylene propylene (FEP) copolymer, perfluoroalkoxyalkane (PFA), perfluoromethoxyalkane (MFA), ethylene tetrafluoroethylene (ETFE) copolymer and / or polychlorotrifluoroethylene (PCTFE), and / or as high performance plastics polyetherketone (PEK), polyaryletherketone (PAEK), polyetheretherketone (PEEK) , Polyphenylene sulfide (PPS), polyethersulfone (PES), polysulfone (PSU), polyether mid (PEI), polyamide in id (PAI), polyimide (PI) and / or LCP (Liqid Cristallin polymer), and / or as
• the plastic comprises fillers and / or reinforcing materials and / or additives, such as release-active additives, in which PTFE or waxes, such as PE waxes, montan waxes, carnauba waxes or calcium stearate, are still advantageously present as release-active additives.
• PTFE or waxes such as PE waxes, montan waxes, carnauba waxes or calcium stearate
• the plastic layer is present as a film or as a spray layer or as a baking layer or as a layer with a carrier material made of a paper or cardboard or textile fabric.
• plastic layer is present on one or more of the contact surfaces of the shaft and hub or only on the contact surface of the shaft or hub or partially on contact surfaces of the shaft and hub.
• a wear material for shaft-hub areas is at least on parts of the contact surfaces of shaft and / or hub a plastic which realizes an electrochemical insulation and separation between the materials of shaft and hub, in the form of a film or in the form of a solution and subsequent drying to a layer or in the form of a plastic coated or impregnated and hardened / crosslinked layer material applied.
• the plastic layer is realized on the contact surfaces of the shaft and / or hub of a temperature treatment for curing and / or for baking the applied as a solution and dried layer of the plastic.
• paper or board or textile fabrics such as woven fabrics, knitted fabrics, knitted fabrics, nonwovens or felts, are used as the coated or impregnated layer material.
• the wear material is applied and glued as a layer (material) and preferably as a plastic film on the contact surfaces of the shaft and / or hub.
• a solution of the plastic is sprayed onto the contact surfaces of the shaft and / or hub, geräkelt or painted and then dried and baked.
• the solution according to the invention makes it possible for the first time to specify a wear material for shaft-hub regions in which corrosion in the shaft-hub region is largely restricted or even prevented and caking of the shaft-hub materials is largely prevented. This is realized with a simple and inexpensive method for applying the wear material to one or more contact surfaces in the shaft-hub region.
• At least partially disposed on the contact surfaces of the shaft and hub at least one plastic layer, wherein the plastic layer in the contact region between the shaft and hub electrochemical insulation and Realized separation between the materials of the contact surfaces of shaft and hub.
• the inventive solution as a kind of plastic (surface) seal.
• contact surfaces Materials that make up the contact surfaces are predominantly metallic materials, but increasingly also carbon fiber composite materials or ceramics.
• the pairings of contact surfaces of shaft-hub areas are predominantly metal-metal pairings, but also metal-non-metal pairings or metal-carbon fiber composite pairings.
• the plastics, which are applied as wear material according to the invention on the contact surfaces in shaft-hub areas are, in order to ensure the electrochemical insulation and separation of the contact surfaces, advantageously substantially non-polar or non-polar and at least substantially adhesive or anti-adhesive at least on its surface ,
• the continuous service temperatures are preferably above, even from a short time, one or more times occurring maximum temperatures in the system when using the shaft-hub connections.
• these can be plastics with continuous use temperatures of ⁇ 90 ° C, such as polystyrene (PS), polyethylene (PE), LD-PE, LLDPE, HD-PE, polypropylene (PP), styrene-acrylonitrile (SAN) copolymer and / or acrylonitrile-styrene-acrylate terpolymer, or with continuous use temperatures ⁇ 160 ° C, such as polycarbonate (PC), Polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyvinylidene fluoride (PVDF), polyamide (PA), especially PA1 1 or PA12, or at continuous service temperatures ⁇ 260 ° C, such as polytetrafluoroethylene (PTFE), perfluoroethylene-propylene (FEP
• Hardened / crosslinked thermosets such as epoxy resins, phenolic resins, melamine resins, UP resins, acrylate resins, vinyl ester resins or PUR resins on a support material, such as paper, textile, can also be used as plastics used according to the invention for the electrochemical isolation and separation of the contact surfaces in the shaft-hub region Tissue or nonwoven, be used as a thin film and / or as a crosslinked layer.
• Vulcanized elastomers or crosslinked thermoplastic elastomers can also be used as a thin film or as a dried, vulcanized or crosslinked layer applied from solution.
• the plastics used according to the invention are advantageously untreated or surface-treated on one side, etched and / or plasma-treated, and can be used as a pure polymer material, in the form of polymer blends, in filled and / or reinforced form.
• the wear materials of the invention are applied according to the invention by at least on parts of the contact surfaces of the shaft and / or hub, a plastic material, which realizes an electrochemical isolation and separation between the materials of shaft and hub, in the form of a film or in the form of a Solution or in the form of coated or impregnated with the plastic layer material is applied.
• the plastic is placed in the form of a film fitting on one or parts of the contact surfaces of the shaft and / or hub or applied and / or fixed.
• a positioning and / or fixing of the film can be realized by wetting a surface with an auxiliary, such as an aqueous surfactant solution, or by bonding to the contact surface or by baking the dried layer applied as a plastic solution.
• an auxiliary such as an aqueous surfactant solution
• the continuous service temperature should advantageously also be above briefly occurring maximum temperatures in the system when using the shaft-hub connections.
• a film of the wear material according to the invention is at least partially placed or glued on at least one of the surfaces of the shaft or hub so that after screwing or other type of fixing shaft and hub, the contact surfaces between the shaft and hub through the film at least partially separated and externally protected against environmental influences.
• films of the wear material according to the invention are applied to both contact surfaces, that is, to the contact surface of the shaft and to the contact surface of the hub.
• the contact surfaces of both shaft and hub are covered as completely as possible with a plastic film.
• the films used for the contact surfaces of the shaft and hub are adapted to the contact surfaces and advantageously consist of different, incompatible plastics. Since most plastics are incompatible with each other, which proves the separation of the individual film layers after a multilayer film extrusion of incompatible plastics without compatibilizer, no bond between the individual film components in the multilayer film extrusion is thus achieved in the melt contact. Analog incompatible plastics can not be welded together and also show no tendency to adhesion together. Films made from incompatible plastics have a separating effect in the shaft-hub system.
• plastics are applied as solutions to the contact surfaces.
• Advantageously usable plastics are PAI, PEI, PI and / or PSU.
• the application can be realized by means of spraying, knife coating or brushing. In a thermal aftertreatment, the solvent is removed and the plastic component forms a dry film / dry plastic coating.
• the solutions of different, incompatible plastics from the wear materials of the invention are sorted and applied separately on both contact surfaces, ie on the contact surface of the shaft and on the contact surface of the hub.
• the wear material according to the invention in the form of a film and on the other contact surface, the wear material in the form of a solution from which forms a dry film or a dry plastic coating after a thermal treatment.
• the contact surfaces coated with film and / or from solution with a dry (plastic) film are subjected to a temperature aftertreatment.
• this temperature aftertreatment is desirable so that complete curing of the plastics and / or complete drying and / or removal of solvents can be realized.
• the person skilled in the art knows which temperatures he must use, so that the plastic component undergoes no thermal damage and thus the solvent is almost completely removed from the resulting film or the resulting layer, so that a dry film or a dry plastic coating is formed. It has proven to be advantageous to work with a temperature control program. The majority of the solvent is removed below the boiling point of the solvent to obtain a smooth bubble-free film or layer.
• the drying conditions are either known or in to master a few attempts.
• the stepwise increase of the temperature to, for example, 20 Kelvin above the boiling point of the solvent with the highest boiling point when using a solvent mixture, the final state of the dry film or layer is produced.
• the temperature program can be worked out in a few experiments.
• the drying is carried out at 100 ° C for 1 hour. Then it is raised to 150 ° C and the layer annealed> 30 minutes. Then it is raised to 200 ° C and annealed again> 30 minutes. Finally, the already dry PAI film> 30 minutes at 220 ° C gets its final properties.
• the solutions of the plastics according to the invention may contain organic solvents or water.
• organic solvents or water may contain organic solvents or water.
• NMP N-methyl-2-pyrrolidone
• NEP N-ethyl-2-pyrrolidone
• DMSO dimethyl sulfoxide
• DMAc ⁇ -dimethylacetamide
• DMF dimethyl sulfoxide
• a residual solvent content of ⁇ 1 Ma .-%, preferably ⁇ 0.5 Ma .-%, more preferably ⁇ 0.1 Ma .-%, based on the fixed layer, are complied with.
• the solutions with layer thicknesses of ⁇ 500 ⁇ , advantageously ⁇ _100 ⁇ , even more advantageously ⁇ 25 ⁇ , applied and / or they have after baking layer thicknesses in the range of ⁇ 500 ⁇ , advantageously ⁇ _100 ⁇ , even more advantageously ⁇ 25 ⁇ on.
• wear materials according to the invention can also be applied to the contact surfaces in shaft-hub regions in the form of a layer material coated or impregnated with the plastic.
• Epoxy resins, vinyl ester resins, phenolic resins and / or melamine resins can advantageously be used as the coating or impregnating material.
• the layer material used can be paper or paperboard or textile fabrics, such as woven fabrics, knitted fabrics, knitted fabrics, nonwovens.
• the textile fabrics can be used from natural or synthetic fibers, advantageously carbon fibers.
• the coated or impregnated Schichtmatehalien can be cured prior to application to the contact surfaces in the shaft-hub region or even after application to the contact surface of the shaft and / or hub before connecting / fixing shaft and hub by pressing and temperature application or by a cured there temperature increase to be cured.
• their curing takes place before application to the contact surfaces.
• fillers and / or reinforcing materials and / or additives can be used for the wear material according to the invention.
• PTFE or waxes such as PE waxes, montan waxes, carnauba wax or calcium stearate, are present as release-active additives.
• waxes When waxes are used, it is advantageous to use only waxes in concentrations of ⁇ 5% by weight and advantageously ⁇ 1% by weight of wax substance or as a wax mixture in the wear material according to the invention as insulating, separating layer between shaft and hub, so that they are used in the film production or in the Layer production at least partially migrate to the surface and here can perform their separation-active function, but due to their low concentration can not reach adjacent areas and there uncontrolled property changes, such as to exercise on brakes.
• a car Opel Astra was equipped in October with winter tires on alloy wheels. With the car until the wheel change on summer tires at the end of April a mileage of about 20,000 km, preferably on highways in southern Germany and on roads in low mountain ranges realized. At night, the car was parked without a cleaning of the debris from the road in the suspension in a garage. During the period of car use from October to the end of April, no cleaning work was carried out on the wheel suspension in the wheel hub area so that the environmental media influences were present and able to take effect over the entire period.
• Comparative Example 1 the car was equipped with winter tires in October, but in the contact area of rim and hub, a polyimide (thickness 25.4 ⁇ , KAPTON® 100 HN, Fa. Krempel Group) positioned previously according to the contact surfaces with recesses for the Bolt was adjusted. The contact surfaces of the rim and hub were previously cleaned of adhering dirt. After the comparable mileage according to Comparative Example 1, the wheels were changed to summer tires at the end of April. All wheels could be easily and easily separated from the hub and it was found neither corrosion of the contact surfaces nor a caking of rim and hub.
• Example 2 Analogously to Example 1, the following films were positioned in the cleaned contact area of rim and hub: a) PTFE peeling film (thickness 0.1 mm, PTFE Nünchritz)
• PC / PBT film PC film on rim, PBT film on hub, Bayfol®, thickness each 175 ⁇ m, Fa. Bayer
• PE film (thickness 125 ⁇ , MELINEX®, Fa. ThyssenKrupp Plastics).
• Comparative Example 1 was on the cleaned contact area of the rim (contact area between the rim and hub) on the rim a one-side etched PTFE film with the thickness of 0.1 mm (PTFE Nünchritz), previously in accordance with the contact surfaces with recesses for the Bolt was adjusted, positioned by means of hot-curing epoxy resin and glued under pressure at 160 ° C. The gluing of the correspondingly adapted / cut PTFE film took place in such a way that the PTFE film on the etched side had previously been thinly coated with the epoxy resin and then applied and hot-bonded under pressure. After bonding and before joining the rim and hub by screwing the contact surfaces of rim with glued PTFE film and hub of cleaned adhering dust / dirt. The rim was fixed to the hub by screwing.
• Comparative Example 1 was on the cleaned contact area of the rim (contact area between the rim and hub) on the rim a PAI + PTFE lubricating varnish (made of chemically coupled PAI-PTFE material with 20 mass% PTFE by dissolving / dispersing in NMP with a Solids content of 25% by mass) by brushing with a film thickness of about 0.1 mm.
• the liquid lubricating varnish layer formed a smooth layer. This layer on the rim was positioned horizontally at 100 ° C for 1 hour in a convection oven.
• the lubricating varnish layer on the rim for 1 hour at 150 ° C, 1 hour at 200 ° C and finally annealed at 225 ° C for 1 hour in a convection oven / post-treated.
• the bonded coating was again leveled / ground flat and cleaned the contact surfaces of rim with lubricating varnish and hub of adhering dust / dirt. The rim was fixed to the hub by screwing.
• Comparative Example 1 was on the cleaned contact area between the rim and hub an epoxy resin-impregnated cotton fabric (with 1 mass% montan wax, based on the amount of epoxy resin used), the hot cured under compression and prior to loading according to the Contact surfaces with recesses for the bolt has been adjusted, positioned. The previous curing of the thermosetting epoxy resin with the cotton fabric must be quantitative.
• the rim and hub contact surfaces were cleaned of adhering dust / dirt prior to joining and loading the adjusted, quantitatively cured cotton fabric epoxy layer.
• the rim was fixed to the hub by screwing. After the comparable mileage according to Comparative Example 1, the wheels were changed to summer tires at the end of April. All wheels could be easily and easily separated from the hub and it was found neither corrosion of the contact surfaces nor a caking of rim and hub.
• a PP film (NOVOTEAR ® film, thickness 125 Fa. Nowofol ⁇ ,) is in the contact region of the rim and the hub is positioned.

Landscapes

• Engineering & Computer Science (AREA)
• Ceramic Engineering (AREA)
• Laminated Bodies (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=53836560

Family Applications (1)

Country Status (5)

Citations (1)

Family Cites Families (13)

• 2014
  • 2014-08-08 DE DE102014215772.2A patent/DE102014215772A1/de not_active Ceased
• 2015
  • 2015-08-03 CN CN201580042696.7A patent/CN106660314A/zh active Pending
  • 2015-08-03 RU RU2017107269A patent/RU2675800C2/ru not_active IP Right Cessation
  • 2015-08-03 EP EP15750318.6A patent/EP3178092A1/de not_active Ceased
  • 2015-08-03 WO PCT/EP2015/067790 patent/WO2016020313A1/de active Application Filing

Patent Citations (1)

Also Published As

Similar Documents

Legal Events