Abstract: Disclosed is an anhydride-free insulation system for current-carrying construction parts of an electric engine which comprises: (A) a mica paper or mica tape for wrapping parts of said electric engine that are potentially current-carrying during operation of the engine, which mica paper or mica tape is impregnable via vacuum pressure impregnation with a thermally curable epoxy resin formulation and comprises one or more thermally activatable sulfonium salt initiators for the homopolymerisation of the epoxy resins present in said said thermally curable epoxy resin formulation or a mixture thereof in an amount sufficient to homopolymerize the epoxy resin taken up by the mica paper or mica tape and the construction part of the engine during the vacuum pressure impregnation step; (B) a thermally curable bath formulation for the vacuum pressure impregnation comprising (i) a polyglycidyl ether or a mixture thereof, and (ii) a cycloaliphatic epoxy resin comprising at least two epoxy groups, which are fused to a cy

Abstract: A plastic composite including a carrier material of polyethylene terephthalate (PET), polyethylene naphthalate (PEN) or ethylene tetrafluoroethylene copolymer (ETFE), and polyamide-12 layers (PA-12) adjoining the carrier material on both sides, can be utilized for the production of photovoltaic modules. The combination of carrier material with PA-12 provides improved insulating capacity for the module along with improved adhesion of the composite layers.

Abstract: The invention relates to the use of a polymer composite (1, 1?), comprising a backing material (3, 3?), selected from the group made up of polyethylene terephthalate (PET), polyethylene naphthenate (PEN) and ethylene-tetrafluoroethylene copolymer (ETFE), and layers of nylon 12 (2, 2?, 4, 4?) adjacent to the backing material on both sides, for producing photovoltaic modules.

Abstract: Polyamide as an encapsulating material for the production of photovoltaic modules.

Abstract: A method for producing photoactive layers, and components, such as solar cells, including the layers. According to the invention, the photoactive layers are produced by forming a non-semiconducting layer from precursor material including at least one metal compound and a salt-like and/or organic reactant on a substrate by printing or blade coating, the layer being exposed to temperatures of less than 300° C., wherein a semiconducting, photoactive layer is formed from the non-semiconducting layer by thermal conversion of the precursor material.

Abstract: The invention relates to a method for producing a layer containing inorganic semiconductor particles. According to the invention, the layer containing inorganic semiconductor particles is formed in situ from metal salts and/or metal compounds and a salt-type or organic reactant within a semiconducting organic matrix. The layers containing inorganic semiconductor particles and produced according to the invention enable a simple and cost-effective production process for photovoltaic elements, such as solar cells or photodetectors.

Abstract: A process produces weather-resistant laminates (1, 1?) for the encapsulation of solar cell systems (7). The process includes at least one weather-resistant plastic layer (2, 2?) being applied on a carrier material (4, 4?). The coating process shows the advantage that the relatively expensive starting products, which usually are used in the form of films, can be reduced in their thickness and in amounts thereof used. Owing to the controllable adjustment of the layer thickness of the weather-resistant layer (2, 2?), a considerable number of applications of the laminates that are produced, in particular in connection with the finished photovoltaic modules, are provided. These applications range from small energy units for emergency telephones or campers to large-area roof and facade systems and also large units and solar power plants.

Abstract: A process for producing mica-containing insulating tape for windings of rotating high voltage electrical machinery which after winding under a vacuum and pressure can be impregnated with a solvent-free synthetic resin and then cured under the action of heat, a fiber-containing mica film which in addition to fine mica also has organic and/or inorganic fibers being sprinkled with an epoxy resin mixture in the form of a powder enamel and the side of the fiber-containing mica film which has been sprinkled with the powder enamel being cemented under pressure and at an elevated temperature to a carrier material.

Abstract: A process for producing impregnable fine mica tapes with a built-in accelerator which after winding onto the conductors of the windings of electrical machines are impregnated with a solvent-free impregnation resin and are then cured under the action of heat. The fine mica film is sprinkled with a powder epoxy resin system which contains a curing agent and the side of the fine mica film which has been sprinkled with the powder epoxy is cemented to a carrier material, the powder epoxy resin system curing under the influence of temperature.

Abstract: A description is given of a photovoltaic module (1) in the form of a laminate, which as the core layer exhibits a solar cell system (2) and encapsulation materials (3, 3′) applied on both sides of the latter. According to the invention, at least one encapsulation material layer (3′) consists of a sealing layer (4′) and a barrier layer (6), which consists of a plastic film or a plastic film composite, and on which an inorganic oxide layer (7) separated out to the vapor phase is present.

Abstract: The description relates to a laminate component consisting essentially of a highly elastic fibre-reinforced synthetic resin matrix which contains a) a laminate region with a bending E modulus of 10,000 to 40,000 MPa which can be made from several synthetic resin fibre prepregs hot-pressed together and thus hardened, b) connecting strips arranged on at least two opposite edges of the laminate region of soft elastic material which are bonded at the surface with the corresponding edges of the laminate region, and c) a decorative covering layer on one side of the laminate.

Abstract: A coating system comprised of a resin component, a hardening component and additives. The resin component contains (meth)acrylic double bonds and at least two reactive hydroxyl groups, and the hardening component is comprised of a multifunctional, at least bifunctional isocyanate. The proportions of resin and hardening component in the coating system are stoichiometric. The coating system is suitable for producing laminated sheets with a surface layer of progressively hardening polyurethane acrylate. During a first hardening stage, the free hydroxyl groups of the resin component cross-link with the isocyanate groups of the hardening component, forming a urethane acrylate prepolymer which contains (meth)acrylic double bonds. In the second hardening state, the (meth)acrylic double bonds continue to cross-link, forming the urethane acrylic polymer coating of the sheet surface.

Abstract: The invention concerns a plastics-paper composite which substantially consists of a paper layer, a polypropylene layer and a polyester layer, the polyester layer forming one of the two surface layers of the plastics-paper composite. This plastics-paper composite is used to produce weatherproof laminated sheets with surface protection, an acrylate layer being applied to the polyester layer of the plastics-paper composite. This composite is stacked on one or both sides with a plurality of papers impregnated with synthetic resin to form a stack, the acrylate layer lying against the outermost paper layer(s). This stack is then pressed at high pressure and high temperature. For use, the surface protection is removed from the acrylate layer as from the polyester layer.

Abstract: A halogen-free resin mixture comprising an epoxy resin, a hardener, a flame retardant as well as additives, a self-extinguishing prepreg composed of this resin mixture as well as its advantageous application, particularly as an insulation material. The halogen-free resin mixture being composed of:a) 20-60 weight % epoxy resin;b) 20-60 weight % phenolic novolak hardener;c) 5-65 weight % zinc borate as flame retardant; andd) 0-30 weight % additives.

Abstract: The invention concerns a process and equipment for manufacturing laminated photovoltaic modules, where (a) a module-stack (2) formed by the system of solar cells, the encapsulating materials and the separating foils is deposited at the loading station (1) and where (b) the module-stack (2) is moved into the vacuum laminator (5) which thereupon is closed and evacuated, and, by pressing the heater plate (21) against the thermally conductive carrier plate (3), said stack is heated to the softening point of the plastic sealing layers present in the encapsulating materials, and where (c) following airing of the vacuum laminator (5) the heater plate (21) is not cooled and the formed composite (2') is moved into the hardening oven (10) and where (d) the hardened laminate (2") is then moved into the cooling zone (12) and (e) is removed from the manufacturing process at the removal station (14). The process stages (a) through (e) of the invention are carried out simultaneously and parallelly in timed manner.

Abstract: The invention concerns a compressible prepreg based on flat substrates impregnated with thermosetting synthetic resins, characterized in that it comprises a first, C stage synthetic-resin layer directly deposited on the substrate and a second, B stage synthetic-resin layer deposited on the first synthetic-resin layer.

Abstract: A method for impregnating a flat, fibrous substrate penetrated by a low viscosity, fluid synthetic resin, the substrate web 1 being preheated by known device 2 and thereupon being made to pass over a friction roller 3 which is heated where called for and which is uniformly wetted at its surface 6 with the low viscosity, aqueous synthetic resin solution based on an aminoplastic resin, substantially a melamine resin 5 or based on a phenolformaldehyde resin 5' present in a bath, the low viscosity, aqueous synthetic resin solution being uniformly heated and at least part of it penetrating the surface of the substrate web 1, whereupon the substrate web 1 loaded with synthetic resin is fully impregnated in the bath 4.

Abstract: A thermally expanding laminate contains highly elastic reinforcing fibers, such as glass fibers, in the elastically compressed state, and a thermally softening, thermosetting plastic as a binder.In order to manufacture this laminate, first glass fiber mats are impregnated with a thermosetting plastic and thereupon one or more superposed mats are compressed in a press and raised to temperatures such that the plastic shall soften and the assembly then is cooled while still being compressed and while the plastic is solidifying to form the finished laminate.The expandable laminate preferably is used for electrically insulating spacers. Illustratively a laminate blank 4 is mounted between neighboring coil parts 5 of a stator of an electrical high-voltage machine.

Abstract: In order to produce the electric insulation of the winding of an electric machine, grooves having a cross-section that tapers at least in an area near to the groove opening are arranged in the rotor or motor. Before the winding is laid in the grooves, the latter are lined with a laminate that contains an elastically compressed mass of high-elastic, electrically insulating fibres and a solidified, curable synthetic resin that can still be thermally softened, however, and that holds the mass of fibres in its compressed state. Once the winding is laid and the grooves are closed, the rotor or stator is subjected to a vacuum pressure impregnation, then cured.

Abstract: A device for concealed, i.e. masked suspension of panels from loadbearing structures and consisting of two bent metal parts fastening into the panel is described, a U-shaped metal part 1, 1' being adjustably linked by an adjustment screw 3, 3' to a metal part 2, 2' so as to be mutually displaceable, the legs 1a, 1a'; 2a, 2a' of the metal parts 1, 1'; 2, 2' resting against each other and the two metal parts 1, 1'; 2, 2' resting flat by their other legs 1b, 1b'; 2b, 2b' against the panel 5, 5' and by their angled end zones 6, 6'; 7, 7' entering channels 8, 8'; 9, 9' milled into the panel and thereby ensuring positive locking to the panel 5, 5'.