35results about How to "Good surface coverage" patented technology

An electrode comprising a primary and secondary metal nanoparticle coating on a metallic substrate is prepared by dispersing nanoparticles in a solvent and layering them onto the substrate, followed by heating. The enhanced surface area of the electrode due to the catalytic nanoparticles is dramatically enhanced, allowing for increased reaction efficiency. The electrode can be used in one of many different applications; for example, as an electrode in an electrolysis device to generate hydrogen and oxygen, or a fuel cell.

A process for producing pellets or granules comprising fibres of a lignocellulousic material, for use as a feedstock in plastics manufacture, conveying in a dry or wet air stream and applying to the fibres a liquid formulation comprising one or more polymers, monomers, or oligomers, forming the fibres into a solid product, and breaking down the solid product to produce said pellets or granules. Typically the conduit conveys the fibres in a plant for manufacture of fibre board.

A solar cell extrusion printing system that uses a micro-extrusion printhead to print longer central gridlines and one or more pairs of shorter “side” gridlines such that end points of the gridline sets form step patterns on an octagonal (pseudo-square) substrate. The printhead includes a set of central nozzles that receive ink from a first valve by way of a first flow channel to print the longer central gridlines, and additional sets of side nozzles that receive ink from additional valves by way of additional flow channels to print the shorter “side” gridlines. The central nozzles have outlet orifices that offset in the process direction from side outlet orifices of the side nozzles. A start signal is simultaneously sent to the valves such that ink is substantially simultaneously extruded through both the central and side orifices, whereby the extruded ink produces gridline endpoints having the desired step pattern.

The invention relates to electronic paste and a preparation method of the electronic paste. The electronic paste comprises, by weight, 30-70% of silver-plated copper powder or silver-plated nickel powder, 0-40% of nano-silver powder, 3-15% of organic solvent, 5-12% of macromolecule resin and 2-10% of inorganic additive. The preparation method of the electronic paste comprises the steps of (1) weighing the macromolecule resin and the organic solvent in proportion, placing the macromolecule resin and the organic solvent into a container, placing the container into a thermostatic water bath, evenly mixing the macromolecule resin and the organic solvent to obtain an organic carrier, and (2) weighing the silver-plated copper powder or the silver-plated nickel powder, the nano-silver powder and the inorganic additives in proportion, adding the silver-plated copper powder or the silver-plated nickel powder, the nano-silver powder and the inorganic additives to the organic carrier obtained in the step (1), carrying out grinding and rolling to meet the requirement of the fineness to achieve even distribution of the solid-phase powder in the organic carrier. The preparation method of the electronic paste is simple, high in production efficiency and low in cost. When the obtained electronic paste is used for printing a fuse link structure of a surface-mount fuse, and compared with traditional silver paste, the pulse resistant capacity is greatly improved.

The present invention is directed to a method of manufacturing a fibre-reinforced polymer composition comprising the steps of providing at least one multifilament strand comprising a plurality of continuous fibre filaments (5), applying an impregnating agent (10) to said strand to form an impregnated continuous multifilament strand, and embedding the impregnated continuous multifilament strand in a thermoplastic polymer material (3) for providing said fibre reinforced polymer composition, wherein said impregnating agent has a low viscosity at application temperature and is applied by jetting said impregnating agent onto the at least one continuous multifilament strand. The invention is further directed to a device (20) for use in such a method.

The invention discloses a preparation method of a lead-based halogen inorganic perovskite film for high-energy ray detection. According to the method, precursor raw materials are obtained through component regulation, the precursor raw materials are evenly mixed and then dispersed to serve as a plurality of evaporation sources, the proportions of all elements of the precursor raw materials in eachevaporation source keep unchanged, and thus vapor-phase transfer deposition preparation of the perovskite film is achieved through a homologous multi-branch co-evaporation method. An appropriate quantity of component raw materials are added in the deposition process of the vapor-phase transfer deposition method, and meanwhile the homologous multi-branch co-evaporation method is adopted, so that the inorganic perovskite thick film suitable for high-energy ray detection and other purposes can be prepared. Through the method, operation is simple, the prepared perovskite thick film has large thickness, large grains, good uniformity and good surface covering performance, and a semiconductor detector good in performance and excellent in stability can be manufactured.

The invention provides a preparation method of a magnesium/magnesium alloy hydrotalcite-aluminum oxide composite coating. The preparation method comprises the four steps including pretreatment of a magnesium alloy, preparation of a hydrotalcite coating, pretreatment of the hydrotalcite coating and atomic layer deposition of an aluminum oxide layer. The main chemical raw materials include aluminumnitrate, magnesium nitrate, sodium carbonate, sodium hydroxide, trimethyl aluminum and ultrapure water. The technical route is characterized in that a hydrothermal method is adopted to synthesize a carbonate hydrotalcite film on the surface of a magnesium/magnesium alloy matrix; and then the aluminum oxide coating is deposited on the surface of the hydrotalcite by using an atomic layer depositiontechnique after surface activation. The invention has the advantages that simple preparation and easy control are achieved, and the obtained composite coating has the compact structure, strong adhesion and good corrosion resistance; and the composite material prepared is suitable for the protection of magnesium alloy materials for engineering equipment.

A solar cell production method involves printing longer central gridlines and one or more pairs of shorter “side” gridlines such that end points of the two gridline sets form step patterns on octagonal (pseudo-square) substrates. A special printhead is used that includes a set of central nozzles which receive ink from a first valve by way of a first flow channel to print the longer central gridlines, and additional sets of side nozzles that receive ink from additional valves by way of additional flow channels to print the shorter “side” gridlines. The central nozzles have outlet orifices that offset in the process direction from side outlet orifices of the side nozzles. A start signal is simultaneously sent to the valves such that ink is substantially simultaneously extruded through both the central and side orifices, whereby the extruded ink produces gridline endpoints having the desired step pattern.

The invention discloses a method for preparing a high-entropy alloy composite coating on a low-carbon steel surface. The method comprises the following steps: pretreating the low-carbon steel surface,mixing Fe-Mn-Ni-Co-Cr high-entropy alloy according to atomic percent, and carrying out mechanical alloying to obtain high-entropy alloy powder; mixing the high-entropy alloy powder with graphite in amass ratio of 9: (1-1.2), and carrying out mechanical alloying to obtain graphene-coated high-entropy alloy powder to be cladded; evenly mixing the alloy powder to be cladded with a fluxing agent toobtain a mixture and then coating the mixture on the low-carbon steel surface, putting low-carbon steel into a high-frequency induction heating machine to be cladded, melting, cooling and condensing the powder to obtain the high-entropy alloy composite coating. According to the method disclosed by the invention, high-entropy alloy nanoparticles are prepared through the mechanical alloying method,and the graphene is obtained through mechanical stripping of the graphite, so that the high-entropy alloy nanoparticles are coated with the graphene, and the coating obtained through induction heatingcladding has excellent hardness, strength, corrosion resistance and high-temperature stability.

A method for preparing a zinc-doped ultra-shallow junction on a semiconductor substrate surface, which belongs to the technical field of semiconductor integration. In the method, a zinc-doped ultra-shallow junction is prepared on a semiconductor substrate surface in a diffusion manner from zinc in zinc oxide obtained by depositing an atomic layer. The method comprises: cleaning a semiconductor substrate surface (1); in an atomic layer deposition system, depositing a zinc oxide layer on a semiconductor substrate using an atomic layer deposition method (2); depositing a cap layer on the zinc oxide layer (3); diffusing zinc atoms in the zinc oxide layer to the semiconductor substrate surface by high-temperature annealing (4); and removing the cap layer and the zinc oxide layer (5). The method can be used for preparing ultra-shallow junctions of planar and non-planar semiconductor devices, and has the advantages of controllable junction depth and low damage to lattices of semiconductor substrates when used for doping of small-sized semiconductor devices.

The invention provides novel artificial tussah silk fibers and a manufacturing method of the novel artificial tussah silk fibers. The novel artificial tussah silk fibers are prepared by fusing and spinning modified polyester, wherein the modified polyester is prepared from the following components in parts by weight: terephthalic acid, ethylene glycol, ethyleneglycol m-phthalate-5-sodium sulfonate, polyethylene glycol, monopentaerythritol, diethylene glycol, an antistatic agent, an antioxidant and a stabilizer. The artificial tussah silk fibers are processed through a chemical and physical modification method, and one type of novel fiber materials capable of replacing natural tussah silk fibers can be developed; the characteristics of natural slight yellow color and luster, jewelry-like color and luster, and rough appearance and style of the artificial tussah silk fibers, the natural tussah silk fibers and fabrics are kept; the defects of common disadvantages of the artificial fibers and the natural tussah silk fibers are also overcome; comprehensive properties including humidity absorption and breathability, antistatic property, anti-pilling, softness and bulkiness, soft color and luster, stiffness and smoothness and uneasiness of deformation and the like are better than those of the natural tussah silk fibers.

The invention relates to the technical field of three-dimensional integrated circuits, in particular to a silicon through hole structure-based metal filling method and a silicon through hole structure. The method comprises the following steps: after bonding a bearing substrate and a top silicon wafer, etching a silicon through hole on the top silicon wafer; sequentially depositing an insulating layer and a barrier layer in the silicon through hole; depositing a metal seed layer on the surface of the barrier layer in an atomic layer deposition manner; and depositing a metal conductor layer on the surface of the metal seed layer. The metal seed layer is added between the barrier layer and the metal conductor layer, so that circuit disconnection caused by a conductor fault can be avoided; and meanwhile, the condition that deposition of the metal seed layer has good surface coverage on any shape and form is achieved in the atomic layer deposition manner; the condition that the surface of the barrier layer can completely cover the metal seed layer is ensured; the circuit disconnection caused by the conductor fault is further avoided; and the process reliability of metal filling is improved.

The invention belongs to the technical field of ceramic ink dispersing agents, and discloses an acrylate segmented copolymer as well as a synthesis method and an application thereof as a ceramic inkjet ink dispersing agent. The acrylate segmented copolymer is prepared by polymerizing methyl methacrylate and N-(3-dimethylamino propyl) methacrylamide. The synthesis method comprises the following steps: under an anaerobic condition, generating an RAFT reagent macromolecule by monomer N-(3-dimethylamino propyl) methacrylamide (or methyl methacrylate) under the action of an initiator and an RAFT reagent; and acting with the monomer methyl methacrylate (or N-(3-dimethylamino propyl) methacrylamide) and reacting under the induction of the initiator to generate the acrylate segmented copolymer. The acrylate segmented copolymer has good covering and encapsulation effect for the inorganic particle surfaces, is stable in dispersion system and is mainly applied to the dispersion of ceramic pigment particles for ceramic inkjet.

The invention discloses an OLED device transparent cathode and a manufacturing method thereof. The manufacturing method comprises the following steps of directly depositing a transparent conductive cathode film on the surface of an OLED device by adopting an atomic layer deposition method, and during preparation of the atomic layer deposition method, using diethyl zinc as a zinc source material, trimethylaluminum as an aluminum source raw material, and hydrogen peroxide as an oxygen source raw material. The defect of poor process matching degree or thin film damage in the field of transparent cathode layers of OLEDs in the preparation method in the prior art is effectively avoided.