Abstract: A gas diffusion electrode for a fuel cell which comprises a gas-permeable substrate that has functional groups is provided, said groups being capable of complexing cations, and catalytically active noble metal particles and/or atoms, said particles and/or atoms being bonded by the functional groups to a surface of a first flat side of the substrate and/or in a surface-proximal region of a first flat side of the substrate. The gas diffusion electrode according to the invention combines the functions of a gas diffusion layer and a catalytic layer in an integral component and is distinguished by a high long-term stability with respect to degradation phenomena of the catalyst.

Abstract: A gas diffusion electrode for a fuel cell which comprises a gas-permeable substrate that has functional groups is provided, said groups being capable of complexing cations, and catalytically active noble metal particles and/or atoms, said particles and/or atoms being bonded by the functional groups to a surface of a first flat side of the substrate and/or in a surface-proximal region of a first flat side of the substrate. The gas diffusion electrode according to the invention combines the functions of a gas diffusion layer and a catalytic layer in an integral component and is distinguished by a high long-term stability with respect to degradation phenomena of the catalyst.

Abstract: The invention relates to a molding compound (100) for electronic components, comprising a plastic main matrix (10) into which a polypropylene plastic particles (11) having a beta-crystallite structure are introduced.

Abstract: The invention relates to a molding compound (100) for electronic components, comprising a plastic main matrix (10) into which a polypropylene plastic particles (11) having a beta-crystallite structure are introduced.

Abstract: A cooling module (2) for a fuel cell (1) including a cooling circuit (3) for conducting a coolant, and a treatment unit (10) for the coolant, which is situated in the cooling circuit (3) in such a way that the coolant flowing in the cooling circuit (3) flows through it. The treatment unit (10) includes a filter medium (11) for removing metal ions from the coolant which includes a polymer having amidoxime and/or hydroxamic acid groups and is in contact with the coolant.

Abstract: A polymer-based layer structure with an oleophobic/hydrophobic surface for coating, sealing, and/or connecting technical components or parts of said components, comprising—a first layer which comprises a polymer, —a second layer that adjoins the first layer and comprises a polymer and particles which comprise a fluoropolymer and which are distributed in the silicone, and —an outer layer that adjoins the second layer and comprises a fluorocarbon compound with at least one reactive group and optionally particles which comprise a fluoropolymer and which are distributed in the fluorocarbon compound. The invention also relates to an electric machine which has the layer structure, said layer structure being provided in particular as a potting compound on a winding and/or on switching rings of the stator and/or as a magnet bonding adhesive of the rotor.

Abstract: A filter medium for removing metallic particles, in particular for liquid filtration, is provided. The filter medium is comprised of a substrate, an adhesive layer containing magnetic particles applied onto the substrate, and at least one nanofiber layer arranged on the adhesive layer.

Abstract: A cooling module (2) for a fuel cell (1) including a cooling circuit (3) for conducting a coolant, and a treatment unit (10) for the coolant, which is situated in the cooling circuit (3) in such a way that the coolant flowing in the cooling circuit (3) flows through it. The treatment unit (10) includes a filter medium (11) for removing metal ions from the coolant which includes a polymer having amidoxime and/or hydroxamic acid groups and is in contact with the coolant.

Abstract: A filter medium, in particular for air filtration, is provided with a substrate and at least one nanofiber layer applied onto the substrate. The nanofiber layer has cavities in or between the nanofibers. In a method for producing the nanofiber layer, a spinning solution for electrospinning from a polymer solution by a spinning electrode and a counter electrode is provided, wherein electrical voltage is applied to the spinning solution and air is passed through the spinning solution. The nanofibers produced by the spinning electrode are deposited onto the substrate that is moved past the counter electrode.

Abstract: A polymer-based layer structure with an oleophobic/hydrophobic surface for coating, sealing, and/or connecting technical components or parts of said components, comprising—a first layer which comprises a polymer, —a second layer that adjoins the first layer and comprises a polymer and particles which comprise a fluoropolymer and which are distributed in the silicone, and—an outer layer that adjoins the second layer and comprises a fluorocarbon compound with at least one reactive group and optionally particles which comprise a fluoropolymer and which are distributed in the fluorocarbon compound. The invention also relates to an electric machine which has the layer structure, said layer structure being provided in particular as a potting compound on a winding and/or on switching rings of the stator and/or as a magnet bonding adhesive of the rotor.

Abstract: A filter medium, in particular for air filtration, is provided with a substrate and at least one nanofiber layer applied onto the substrate. The nanofiber layer has cavities in or between the nanofibers. In a method for producing the nanofiber layer, a spinning solution for electrospinning from a polymer solution by a spinning electrode and a counter electrode is provided, wherein electrical voltage is applied to the spinning solution and air is passed through the spinning solution. The nanofibers produced by the spinning electrode are deposited onto the substrate that is moved past the counter electrode.

Abstract: A filter medium for removing metallic particles, in particular for liquid filtration, is provided. The filter medium is comprised of a substrate, an adhesive layer containing magnetic particles applied onto the substrate, and at least one nanofiber layer arranged on the adhesive layer.

Abstract: In a method for producing a polyamide nanofiber product that contains PTFE particles, a spinning solution containing polyamide, PTFE, and a conductivity-increasing additive is provided and nanofibers are produced by electrospinning from the spinning solution. The conductivity-increasing additive is an acid-resistant additive; a surfactant additive; or an acid-resistant and surfactant additive and contains one or more organic salts. The polyamide nanofiber product with PTFE particles is used in filter media and is especially applied to a filter layer of cellulose or synthetic material.

Abstract: In a method for producing a polyamide nanofiber product that contains PTFE particles, a spinning solution containing polyamide, PTFE, and a conductivity-increasing additive is provided and nanofibers are produced by electrospinning from the spinning solution. The conductivity-increasing additive is an acid-resistant additive; a surfactant additive; or an acid-resistant and surfactant additive and contains one or more organic salts. The polyamide nanofiber product with PTFE particles is used in filter media and is especially applied to a filter layer of cellulose or synthetic material.

Abstract: A method for electrostatic spinning of thermoplastic polymers for obtaining nano and microfibers, is introduced. The method if characterized by the following steps: solving the thermoplastic polymer in a corresponding solvent; adding a thermoplastic elastomer (TPE) to this solution, and introducing the solution into an electric field and spinning under the effect of the electric field to nano and microfibers.

Abstract: A method for electrostatic spinning of thermoplastic polymers for obtaining nano and microfibers, is introduced. The method if characterized by the following steps: solving the thermoplastic polymer in a corresponding solvent; adding a thermoplastic elastomer (TPE) to this solution, and introducing the solution into an electric field and spinning under the effect of the electric field to nano and microfibers.