摘要:
A process for the preparation of acetylene and synthesis gas by partial thermal oxidation in a reactor which has a burner having passages, wherein the starting materials to be reacted are rapidly and completely mixed only immediately before the flame reaction zone in the passages of the burner, a mean flow rate which exceeds the flame propagation velocities under the given reaction conditions being established in the mixing zone within the passages.
摘要:
The invention relates to a process for the production of a structured electrically conductive coating on a substrate, in which first a monolayer or oligolayer of a surface-hydrophobizing substance is applied to a surface of the substrate and then a substance comprising electrically conductive particles is applied to the substrate according to a predetermined pattern. The invention furthermore relates to a use of the process for the production of solar cells or circuit boards and to an electronic component comprising a substrate to which a structured electrically conductive surface is applied, a monolayer or oligolayer of a surface-hydrophobizing material being applied to the substrate and the structured electrically conductive surface being applied to the monolayer or oligolayer.
摘要:
The invention relates to a composition for printing conductor tracks onto a substrate, especially for solar cells, using a laser printing process, which composition comprises 30 to 90% by weight of electrically conductive particles, 0 to 7% by weight of glass frit, 0 to 8% by weight of at least one matrix material, 0 to 8% by weight of at least one organometallic compound, 0 to 5% by weight of at least one additive and 3 to 69% by weight of solvent. The composition further comprises 0.5 to 15% by weight of nanoparticles as absorbents for laser radiation, which nanoparticles are particles of silver, gold, platinum, palladium, tungsten, nickel, tin, iron, indium tin oxide, titanium carbide or titanium nitride. The composition comprises not more than 1% by weight of elemental carbon.
摘要:
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.
摘要:
The invention relates to a composition for printing conductor tracks onto a substrate, especially for solar cells, using a laser printing process, which composition comprises 30 to 90% by weight of electrically conductive particles, 0 to 7% by weight of glass frit, 0 to 8% by weight of at least one matrix material, 0 to 8% by weight of at least one organometallic compound, 0 to 5% by weight of at least one additive and 3 to 69% by weight of solvent. The composition further comprises 0.5 to 15% by weight of nanoparticles as absorbents for laser radiation, which nanoparticles are particles of silver, gold, platinum, palladium, tungsten, nickel, tin, iron, indium tin oxide, titanium carbide or titanium nitride. The composition comprises not more than 1% by weight of elemental carbon.
摘要:
The invention relates to a composition for printing electrodes on a substrate, comprising 30 to 90% by weight of electrically conductive particles, 0 to 7% by weight of glass frit, 0.1 to 5% by weight of at least one absorbent for laser radiation, 0 to 8% by weight of at least one matrix material, 0 to 8% by weight of at least one organometallic compound, 3 to 50% by weight of water as a solvent, 0 to 65% by weight of at least one retention aid and 0 to 5% by weight of at least one additive, based in each case on the total mass of the composition. The invention further relates to a use of the composition.
摘要:
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.
摘要:
The invention relates to a process for producing structured or full-area, electrically conductive surfaces on a substrate (1), comprising the following steps: (a) transferring electrolessly and/or electrolytically coatable particles or a dispersion (3) comprising electrolessly and/or electrolytically coatable particles from a transfer medium (5) onto the substrate (1), (b) fixing the electrolessly and/or electrolytically coatable particles on the substrate (1), wherein the transfer in step (a) is promoted by virtue of the particles being magnetic or magnetizable or, in the case of transfer or a dispersion, magnetic or magnetizable particles being present in the dispersion, and a magnetic field (9) is applied.
摘要:
The invention relates to a composition for printing electrodes on a substrate, comprising 30 to 90% by weight of electrically conductive particles, 0 to 7% by weight of glass frit, 0.1 to 5% by weight of at least one absorbent for laser radiation, 0 to 8% by weight of at least one matrix material, 0 to 8% by weight of at least one organometallic compound, 3 to 50% by weight of water as a solvent, 0 to 65% by weight of at least one retention aid and 0 to 5% by weight of at least one additive, based in each case on the total mass of the composition. The invention further relates to a use of the composition.
摘要:
This specification describes the use of a composition comprising a nanoscale powder, a porous ceramic powder and a solvent for protecting a metallic surface against chemical attacks at high temperatures, in particular in a reducing and/or carburizing atmosphere, and also a corresponding process. Furthermore, this specification describes a plant part having a metallic surface which, in the operating state, is exposed to a reducing and/or carburizing atmosphere, wherein the surface is coated with a porous protective coating having a specific surface area of at least 20 m2/g.