97results about How to "The preparation device is simple" patented technology

The invention discloses a platinum (Pt)/reduced graphite oxide (RGO) nano composite material and a preparation method and application thereof. According to the preparation method, graphite oxide (GO) and a platinum metal precursor are reduced in one step by radiation and induction of a gamma ray or an electronic beam, thus obtaining the Pt/RGO nano composite material with the Pt load capacity being 1.0wt% to 15wt%; Pt nano particles are uniformly distributed on an RGO sheet layer, and the average diameter of the Pt nano particles is 1.8 nanometers; and the particle sizes of the Pt nano particles are within 2 nanometers. By virtue of the load capacity of the nano particles of platinum metal, the reducing degree of the GO can be increased, the conductivity of a product is improved, and the surface utilization rate of the RGO sheet layer is increased. Compared with the GO and pure graphene, the nano composite material prepared by the method has higher specific capacitance and higher high-current multiplying power when being applied to a super-capacitor electrode material.

The invention provides a method for preparing a microlens array with adjustable light transmittance. The microlens array is formed by arranging polymer scattering liquid crystal microspheres, wherein the polymer is polystyrene (PS), polycarbonate (PC), polymethylmethacrylate (PMMA), dimethyl silicone polymer (PDMS), NOA65 or NOA81; the liquid crystal is E7, E8, 5CB, 6CB, 7CB or a mixed liquid crystal of the liquid crystals and a light responding low molecule liquid crystal with azobenzol functional group, and the light responding low molecule liquid crystal can be BMAB, BHAB or BHMB. The preparation method comprises the following steps: mixing the polymer or the prepolymer of the polymer and liquid crystal to form a homogeneous solution, leading a polymer solution containing liquid crystal and a polyvinyl alcohol solution to a microflow control device so as to obtain the polymer solution drops containing liquid crystal, solidifying drops to obtain the polymer scattering liquid crystal microspheres, and forming the microlens array with an adjustable light transmittance by the microspheres.

The invention relates to a device and a process for regenerating active carbon. The device comprises a reaction chamber and an aeration chamber, wherein the aeration chamber is arranged at the bottom of the reaction chamber; the reaction chamber and the aeration chamber are separated from each other by a water distribution plate; an external power source is arranged outside the reaction chamber, and connected to an anode and a cathode both mounted inside the device; the anode and the cathode are mounted on the two sides of the reaction chamber; an electrolyte inlet, a polluted water inlet and an aeration inlet are formed on the bottom of the aeration chamber; an aeration pipe is arranged in the aeration chamber, and connected to an ozone generating device through a gas pipe; and an electrolyte is filled in the aeration chamber via the electrolyte inlet, flows through the reaction chamber and then flows out via a water outlet formed at the top of the reaction chamber. Compared with the prior art, a method of combining an electrochemical process with ozone for regeneration is adopted in the invention, so that the regeneration efficiency of the active carbon is improved, and the device is relatively simple.

The invention discloses a preparation method for a subject-object self-repairing transparent film. The method comprises the following steps: 1) modifying beta cyclodextrin with an amido bond on a branch of branched polyethyleneimine and modifying adamantane with the amido bond on the branch of polyacrylic acid, thereby acquiring the branched polyethyleneimine modified with beta cyclodextrin and the polyacrylic acid modified with adamantine, and 2) repeatedly depositing the branched polyethyleneimine modified with beta cyclodextrin and the polyacrylic acid modified with adamantine in turn on a substrate, thus obtaining the subject-object self-repairing transparent film. The method provided by the invention is simple and effective, the operation is simple and convenient and the required time is short.

The preparation method of catalyst for synthesizing ammonia includes the following steps: firstly, using ruthenium trifluoride solution with a certain concentration and adopting conventional wte impregnation method or coating method to impregnate the dried commercial active carbon carrier; drying at 30-120 deg.c; using dilute reducing agent solution to make reduction; using dilute alkaline solution to wash and using pure water to wash, drying at 30-120 deg.c; using conventional wet impregnation method or coating method to impregnate alkaline soil, rare earth or alkali metal solution as adjuvant; finally drying at 30-120 deg.c. As compared with catalyst prepared by hydrogen reduction process the activity of said invented catalyst can be raised by 5-30%.

The invention relates to a set of a self-supporting mosaic (10) intended to serve as bumper skin for an automotive vehicle and at least one body panel (30, 32). The self-supporting is equipped with attachments to the vehicle's blank body. The mosaiccomprises at least one part (16) intended to remain visible once the self-supporting mosaicis mounted on the vehicle and is part of the bumper skin, at least one receiving area (22, 24) for the body panel (30, 32) and means (34, 36, 46) for attaching the body panel (30, 32) to this receiving area. The body panel constitutes another part of the bumper skin. The body panel itself is produced by cutting or thermoforming. The invention also relates to a set of at least two self-supporting mosaics as well as a body panel (30, 32) intended for the set.

The invention discloses a method of preparing bromophenol. The method comprises the following steps: supported heteropoly acid is used as a catalyst, potassium bromide is used as bromo source, and peroxide is used as oxidizer to bromize phenol, and then neutralization, washing, extraction, and drying are performed in sequence to obtain the bromophenol. The supported heteropoly acid is formed by carriers which load heteropoly acid, wherein, the grain diameter of the carriers ranges from 75 to 800 micrometres, and the weight of the heteropoly acid ranges from 1 to 50 percent. In the method, the phenol percent conversion is high, and the selectivity of contraposition phenol bromo-compounds is high; the adopted catalyst has simple preparation, high reactivity and wide loading range, is easy to process after the reaction, can be used repeatedly, and has wide application prospect.

The invention discloses a method for detecting β-glucan based on the principle of fluorescence enhancement. The treated silicon wafer is used as the substrate, and titanium dioxide and graphene oxide hydrogel are deposited on the silicon wafer in combination with spin-coating technology to prepare titanium dioxide/ Graphene oxide hydrogel one-dimensional photonic crystal, and gold-plated on the photonic crystal by vacuum evaporation method, prepared gold-plated titanium dioxide/graphene oxide hydrogel one-dimensional photonic crystal, and used this photonic crystal as a fluorescence-enhanced Substrate, a method for detecting β-glucan by detecting the fluorescence intensity of the fluorescent complex product specifically combined with aniline blue. The present invention uses gold-plated titanium dioxide/graphene oxide hydrogel one-dimensional photonic crystals as the base, and combines the fluorescence enhancement effects of gold nanoparticles and photonic crystals to cause greater fluorescence enhancement, thereby improving the sensitivity of fluorescence detection. The method is simple and effective, the operation is convenient and the required time is short.

The invention discloses a preparation method of ultralong silver nanowires. The preparation method is characterized in that dodecyl trimethyl ammonium chloride and FeCl3 are introduced into a reaction system, and the shape and the size of a silver chloride crystal nucleus are controlled, so as to guide the one-dimensional growth of the ultralong silver nanowires. The preparation method is simple in preparation devices, few in steps, low in temperature, and simple and convenient to operate; the whole preparation process is carried out under normal pressure and atmosphere environment; the ultralong silver nanowires of which the average length is 90-120 microns and the average diameter is 90 to 120nm can be obtained by one-step reaction; a transparent conductive film prepared based on the ultralong silver nanowires is outstanding in electrical and optical characteristics; the transmittance under the wavelength of 550nm can reach 91.3%, and the square resistance is up to 8.6 ohms per square.

The invention relates to a preparation method of a high-density metal azide with arbitrarily regulated filling density, and belongs to the field of initiating explosive devices. The preparation methodmixes hollow microspheres with different diameters constructed by nanoporous metal/metal oxide and fills a restraint shell with the hollow microspheres to prepare hollow microspheres constructed by the nanoporous metal/metal oxide with a little filling density in the restraint shell, and then places the restraint shell filled with the hollow microspheres constructed by the nanoporous metal/metaloxide in a reactor to be subjected to gas-solid in-situ chemical reaction with hydrazoic acid gas to prepare the metal azide with high filling density. The preparation method of the invention can prepare the high-density metal azide having a filling density of 50%-92% of theoretical density in the restraint shell. The prepared high-density metal azide (for example, the copper azide dose is more than or equal to 0.4 mg) in a single restraint shell can detonate HNS-IV, CL-20, PETN, RDX and other explosives with a filling density being 75%-92% of the theoretical density and a diameter being morethan or equal to 0.5 mm or ignite B/KNO3 and other ignition powder.

The invention discloses a preparation device and preparation method of metal semi-solid billets, which belong to the field of metal materials and metallurgical technologies. The preparation device of metal semi-solid billets disclosed by the invention comprises a heating mechanism, a crucible and a lifting platform, wherein the heating mechanism comprises an alternating-current power supply and a heating coil, the heating coil is connected with the alternating-current power supply by a lead, and the heating coil comprises a first coil and a second coil; and the crucible is fixed on the lifting platform and arranged in the first coil and the second coil. The preparation method of metal semi-solid billets disclosed by the invention comprises a step of cyclic remelting treatment, and the cyclic remelting treatment mainly comprises the following steps: alternately closing the first coil and the second coil, controlling that the center temperature of a metal melt is in a semi-solid temperature range, and cyclically moving the crucible upwards and downwards. Through the adoption of the invention, pure and pollution-free metal semi-solid billets can be obtained; and the preparation device is simple in equipment and operation and low in cost, and widely applied to various alloy materials.

The invention provides a preparation method and a preparation device for a CIGS-based thin-film solar cell. According to the invention, a light absorption layer of the CIGS-based thin-film solar cell is deposited by adopting double-target sputtering in a vacuum chamber, a plasma ablation area of a target 1 faces towards the direction of a substrate and a plasma ablation area of a target 2 faces towards the surface of the target 1 in the sputtering process, so that materials of the target 2 are deposited on the target 1, and then the materials of the targets 2 are deposited on the substrate together with materials of the target 1. The preparation method for the light absorption layer enables components of the deposited film to be more uniform.

The invention discloses a preparation method of a self-repairing degradable C3N4/subject-object film. The method comprises the following steps of: step I, adding carbon nitride (C3N4) powder into a branched polyethyleneimine-beta-cyclodextrin (PEI-beta CD) solution for ultrasonic treatment and centrifugation to form a clear milk-white carbon nitride-branched polyethyleneimine-beta-cyclodextrin (C3N4-PEI-beta CD) solution, and step II, performing alternated deposition on C3N4-PEI-beta CD and polyacrylic acid-adamantane (PAA-AD) on the surface of a substrate to form the PAA-AD/C3N4-PEI-beta CD self-repairing degradable subject-object film. The method is simple, effective, and easy and simple to operate, and the required lime is shorter.

The invention relates to a polyborazine ceramic precursor and a preparation method thereof. According to the invention, a solution polycondensation method is used and the preparation method comprises the following steps of: using boron-containing alkylogen and diamine as monomers; adding the boron-containing alkylogen and diamine into an organic solvent under an inert gas or nitrogen protection; and obtaining the precursor through a stepwise heating polycondensation at a temperature of -20-300 DEG C. According to the invention, polyborazine is white solid and has an excellent solubility in ethanol, acetone and other commonly used solvents; the skeletal structure of the precursor has a large number of active terminal groups so that the precursor can participate in curing processes of an epoxy resin and a benzoxazine resin, can be used for preparing the ceramic precursor and a high-performance composite material; and particularly, the polymer has higher oxidation-resistant and heat-resistant performance and a potential application prospect in ablation protection materials.