Abstract:
The invention relates to a method for producing form bodies for heat exchangers comprising a thermomagnetic material, wherein the form bodies have channels for conducting a fluid heat exchange medium, wherein a powder of the thermomagnetic material is introduced to a bonding agent, the resulting moulding material is applied to a carrier by a pressure process and the bonding agent is removed and then the resulting green body and, if applicable the carrier, are sintered.
Abstract:
The invention relates to a method for producing polymer-coated metal foils, comprising the following steps: (a) a base layer (7) is applied to a carrier foil (3) by means of a dispersion (5) containing particles that can be electroless-plated or electroplated in a matrix material; (b) the matrix material is at least partially dried and/or at least partially hardened; (c) a metal layer (19) is formed on the base layer (7) by subjecting the base layer (7) containing the particles that can be electroless-plated or electroplated to an electroless plating or electroplating process; (d) a polymer (23) is applied to the metal layer (19). The invention further relates to a use of the polymer-coated metal foil produced according to the invention for manufacturing printed circuit boards.
Abstract:
The invention relates to a method for electrically contacting electrical components (122) on a carrier (110), said method comprising the following steps: (a) at least one dispersion (116) comprising electroconductive particles is applied in at least one region of the carrier (110); (b) at least one electrical component (122) is applied to the dispersion (116), and (c) the dispersion (116) is fully or partially metallised in a currentless and/or galvanised manner. The invention also relates to an electrical module (134) comprising at least one carrier (110) and at least one electrical component (122). The electrical component (122) is contacted on the carrier (110) using an inventive method. The invention further relates to a device for carrying out the inventive method, to a dispersion (116) for using in the inventive method, and to a use of said dispersion (116).
Abstract:
The invention relates to a device for electroplating at least one electrically conductive substrate or a structured or electrically conductive surface covering the whole area of a non-conductive substrate. Said device comprises at least one bath, an anode and a cathode. The bath contains an electrolyte solution, which comprises at least one metal salt and from which metal ions are deposited on electrically conductive surfaces of the substrate to form a metal layer, as the cathode is brought into contact with the surface of the substrate to be coated and said substrate is conveyed through the bath. The cathode comprises at least two discs (2, 4, 10) that are rotatably mounted on a respective shaft (1, 5, 14), said discs (2, 4, 10) intermeshing. The invention also relates to a method for electroplating at least one substrate, said method being carried out in a device according to the invention. The invention further relates to the use of said device for electroplating electrically conductive structures situated on an electrically non-conductive support.
Abstract:
The invention relates to a process for the recovery of metals from electronic components which comprise at least one full-area or structured metallic coating on a substrate, with the at least one full-area or structured metallic coating having at least one layer of a magnetic or magnetizable material, wherein the process comprises the following steps: (a) comminution of the electronic components, (b) separation of the materials of which the electronic component is made, with the parts containing the magnetic or magnetizable material being separated off by means of a magnet.
Abstract:
A composition for producing magnetic or magnetizable moldings, comprising from 95.5 to 98.95% by weight of a powder made of a magnetic or magnetizable material, from 1.0 to 4% by weight of a mixture made of at least one epoxy-novolak resin, and also of at least one hardener, and comprising from 0.05 to 0.5% by weight of at least one additive, based in each case on the total weight of the composition. The mixture made of the at least one epoxy-novolak resin and of the at least one hardener comprises from 85 to 95% by weight of the epoxy-novolak resin and from 5 to 15% by weight of hardener. The hardener has been selected from (cyclo)aliphatic amines and their adducts, polyamides, Mannich bases, amidoamines, phenolic resins, imidazoles, and imidazole derivatives, dicyandiamide, and BF3-monoethanolamine. It also involves a process for producing said composition and a molding made of said composition.
Abstract:
The invention relates to a method for producing electrodes for solar cells, the electrode being designed as an electrically conducting layer on a substrate (1) for solar cells. In a first step, a dispersion containing electrically conducting particles is transferred from a support (7) onto the substrate (1) by irradiation of the dispersion with a laser (9), and in a second step, the dispersion transferred onto the substrate (1) is dried and/or cured to form the electrically conducting layer.
Abstract:
The invention relates to the use of highly functional, highly branched polyetheramine polyols for coating substrates such as metal surfaces or plastic components, allowing an improved adhesion of additional coats.
Abstract:
The invention relates to a process for producing electrically conductive bonds between solar cells, in which an adhesive comprising electrically conductive particles is first transferred from a carrier to the substrate by irradiating the carrier with a laser, the adhesive transferred to the substrate is partly dried and/or cured to form an adhesive layer, in a further step the adhesive is bonded to an electrical connection, and finally the adhesive layer is cured. The invention further relates to an adhesive for performing the process, comprising 20 to 98% by weight of electrically conductive particles, 0.01 to 60% by weight of an organic binder component used as a matrix material, based in each case on the solids content of the adhesive, 0.005 to 20% by weight of absorbent based on the weight of the conductive particles in the adhesive, and 0 to 50% by weight of a dispersant and 1 to 20% by weight of solvent, based in each case on the total mass of the undried and uncured adhesive.
Abstract:
The invention relates to a device for the electrolytic coating of at least one electrically conductive substrate or a structured or full-surface electrically conductive surface on a nonconductive substrate, which comprises at least one bath, one anode and one cathode, the bath containing an electrolyte solution containing at least one metal salt, from which metal ions are deposited on electrically conductive surfaces of the substrate to form a metal layer while the cathode is brought in contact with the substrate's surface to be coated and the substrate is transported through the bath, wherein the cathode comprises at least two disks (2, 4, 10) mounted on a respective shaft (1, 5, 14) so that they can rotate, the disks (2, 4, 10) engaging in one another. The invention furthermore relates to a method for the electrolytic coating of at least one substrate, which is carried out in a device according to the invention. Lastly, the invention also relates to a use of the device according to the invention for the electrolytic coating of electrically conductive structures on an electrically nonconductive support.