19results about How to "Form evenly" patented technology

This invention relates to a processing method for soft and tender abalone with a soft, glutinous texture, comprising the following steps: S1, pre-treating fresh abalone to obtain pre-treated abalone meat; S2, placing the pre-treated abalone meat under hot air conditions, first heating it to a first temperature and holding it at that temperature, then raising the temperature to a second temperature and holding it at that temperature, to obtain enzyme-inactivated abalone meat; the first temperature does not exceed 55°C, and the second temperature is at least 10°C higher than the first temperature; S3, enzymatically hydrolyzing the enzyme-inactivated abalone meat with a protease, and after inspection and packaging, obtaining soft and glutinous abalone with a soft, glutinous texture. This invention, through gradient temperature inactivation of enzymes and three-parameter synergistic regulation of enzymatic hydrolysis, produces soft and glutinous abalone with a sticky adductor muscle adhesiveness >25N, a soft, glutinous texture uniformity >90%, and a 100% success rate in achieving the desired soft and glutinous texture. The method of this invention is simple and can achieve large-scale and continuous production. It is suitable for the industrial processing of high-end ready-to-eat soft-boiled abalone, pre-cooked soft-boiled abalone, and other products, significantly improving the added value and market competitiveness of abalone products.

This invention belongs to the field of membrane separation technology, specifically relating to a method for preparing a polytetrafluoroethylene (PTFE) composite membrane. The preparation method includes: (1) dissolving a spinning aid, a barium source, a titanium source, and a manganese source in a composite solvent, and then electrospinning to obtain precursor fibers; subsequently, blending the precursor fibers with a grain refiner, and heat-treating to obtain doped ferroelectric fiber bundles; (2) further polymerizing organic acids, inorganic acids, conductive fillers, and conductive polymers with monomers and oxidants to finally obtain a conductive polyaniline composite; (3) incorporating Mxene and the conductive polyaniline composite into an aqueous PTFE emulsion, and then further incorporating the doped ferroelectric fiber bundles and stirring to obtain a suspension; the suspension is then coated, post-treated, and kept warm to obtain a PTFE composite membrane. This invention improves the long-term fouling resistance of the PTFE membrane by doping the doped ferroelectric fiber bundles, the conductive polyaniline composite, Mxene, and PTFE.

This invention relates to the field of physical similarity simulation technology, specifically providing a physical simulation method for the formation process of lunar lava tube structures. The method involves preparing a simulated melt that meets the rheological and thermodynamic similarity criteria of basaltic lava by mixing thermoplastic materials with condensation additives. The low-gravity effect, high-vacuum environment, and radiative cooling conditions under lunar conditions are reproduced using inclined flow channels and thermal vacuum cavities. By precisely matching dimensionless parameters such as Peckley number, dimensional temperature, and Rayleigh number, the injection rate, flow channel inclination angle, and target ambient temperature of the simulated melt are determined. Under these conditions, controlled melt flow and surface solidification crust formation are simulated, ultimately forming a cavity structure model. This allows for the physical study of the formation process of lunar lava tube structures. This invention can accurately reproduce the dynamic crust formation and cavity formation process of lava flow under extreme lunar conditions, providing a quantitative experimental data basis for the study of the formation mechanism of lunar lava tubes and their engineering applications.

The application discloses a microfluidic chip for preparing high-flux tumor organoids and a preparation method and application thereof. The microfluidic chip comprises a top layer and a matched bottom layer connected with the top layer; the top layer contains four hollow areas in the shape of right-angle sectors, and forms liquid storage areas after being connected with the bottom layer; four cell culture areas and four liquid exchange buffer areas are arranged in the areas of the bottom layer corresponding to the hollow areas of the top layer, and one cell culture area and one liquid exchange buffer area form a right-angle sector; the cell culture area is provided with a plurality of small chambers; and the liquid exchange buffer area is connected with the center. The microfluidic chip is provided with the liquid exchange buffer area, which greatly reduces the growth interference and loss of cells during liquid exchange, thereby being beneficial to the formation of uniform tumor organoids and keeping the tumor organoids in situ, facilitating continuous observation; and the top-open structure design is adopted, which is convenient for uniform implantation and dispersion of tumor cells and convenient for recovery of the tumor organoids.

The invention provides a preparation and analysis method of a hot-dip Zn-Al-Mg alloy coating, and belongs to the technical field of metal surface coating. The preparation method comprises the steps of steel strip pretreatment, hot dipping and post-plating treatment, and an alloy plating layer with a uniform structure is obtained by controlling parameters of all working procedures; the invention also provides a matched coating analysis method which comprises the following steps: performing phase analysis by adopting an X-ray diffractometer, and performing quantitative characterization on the microscopic structure of the coating by adopting a scanning electron microscope in combination with image analysis software. The corrosion resistance of the coating is remarkably improved by increasing the content of Al and cooperatively adding Mg and Si, the microstructure characteristics of the coating are revealed through analysis, a theoretical basis is provided for component optimization and process control, and industrial application prospects are achieved.

The invention discloses a protection device for mining machinery welding, and relates to the technical field of machinery welding protection, the protection device comprises a handle and a gun body, one end of the handle is fixedly connected with the gun body, the inner side of the gun body is in threaded connection with a connecting body, and the inner side of the connecting body is fixedly connected with a tungsten needle clamping pipe; a tungsten needle is fixedly connected to the inner side of the tungsten needle clamping pipe, a gas compensation mechanism is arranged on the outer side of the gun body, a nozzle is arranged at the bottom of the gas compensation mechanism, the nozzle is arranged on the outer side of the tungsten needle, a reset mechanism is arranged on the inner side of the nozzle, and the gas compensation mechanism is arranged. The mechanism can drive the nozzle to generate an offset towards the blowing direction (namely the windward direction) of wind; a hedging angle is formed between the ejection axis of the protective gas and the wind direction, so that gas loss caused by wind drift is actively compensated; and finally, wrapping type stable covering of the protective air curtain on the welding area is achieved, and the welding quality is ensured.

This invention discloses a method for preparing magnesium aluminum spinel using calcium aluminate filter residue from water treatment agents, belonging to the field of magnesium aluminum spinel synthesis technology. The method involves drying the calcium aluminate filter residue from water treatment agents and then calcining it at a low temperature of 400-800℃ to obtain an intermediate material. This intermediate material is then mixed with a magnesium source and rare earth oxides and ball-milled to obtain a mixed powder. The mixed powder is then pressed into pellets and sintered at a high temperature of 1400-1700℃ to obtain magnesium aluminum spinel. This method uses calcium aluminate filter residue from industrial solid waste water treatment agents as the main raw material, fully utilizing its raw material characteristics to prepare a high-purity, high-density magnesium aluminum spinel product, achieving high-value utilization of waste. Furthermore, this method is simple to operate, low-cost, and easy for industrial production.

The invention relates to the technical field of batteries, and discloses a sodium battery positive electrode material with a heterostructure and a preparation method and application thereof.The preparation method comprises the steps that 1, a nickel source, a manganese source and a first solvent are subjected to first mixing, and a solution A is obtained; carrying out second mixing on a niobium source and a second solvent to obtain a solution B; (2) under a protective atmosphere, carrying out a co-precipitation reaction on the solution A, the solution B, a precipitator solution and a complexing agent solution to obtain a first precursor material; (3) performing third mixing on the first precursor material, a lithium source and a sodium source, and performing first heat treatment to obtain a second precursor material; and (4) carrying out second heat treatment on the second precursor material to obtain the sodium battery positive electrode material with the heterostructure. According to the preparation method provided by the invention, a coprecipitation reaction is combined with a two-time heat treatment process, and the cathode material with a heterostructure, which is uniform in distribution and stable in structure, is prepared, so that the electrochemical performance of a battery is improved.

This application relates to solar cells, sliced ​​solar cells, tandem solar cells, and photovoltaic modules. The solar cell includes: a substrate having a first surface and a second surface disposed opposite each other in the thickness direction; a groove structure formed on the first surface, the groove structure including a bottom surface recessed inward relative to the first surface, a side surface extending from the first surface toward the bottom surface in the thickness direction, and an inclined surface extending obliquely from one end of the side surface away from the first surface and connected to the bottom surface, the side surface being perpendicular to the bottom surface, the angle between the inclined surface and the bottom surface being 32° to 48°, and the ratio of the height of the side surface to the height of the inclined surface in the thickness direction being 2:1 to 11:1; and a textured region formed on the first surface, the textured region including a first protrusion located at the edge of the groove structure, the first protrusion being a truncated pyramid. This application can improve photoelectric conversion efficiency.

The aerosol substrate piece, the aerosol substrate section, the preparation method thereof and the aerosol product are disclosed. The aerosol substrate piece comprises a piece-shaped substrate, the piece-shaped substrate comprises a plurality of substrate strips arranged in parallel, at least one connecting area is formed between adjacent substrate strips, the connecting area connects the adjacent substrate strips, and the aerosol substrate piece can be heated to generate an aerosol. The aerosol substrate piece disclosed by the embodiments of the present disclosure can be connected together through the connecting area between the adjacent substrate strips, which is conducive to improving the integrity and overall strength of the piece-shaped substrate, thereby being conducive to reducing displacement caused by factors such as vibration during transportation, storage or use, thereby further improving the stability of the suction resistance, and meanwhile, the situation that the substrate strips are broken and fall off can be improved, which is conducive to improving the suction stability and yield.

This invention discloses a method for preparing a tungsten carbide-doped carbon-supported platinum (Pt / C) catalyst and its application. The method involves mixing tungsten oxide and a carbon support in an organic solvent via a hydrothermal process to obtain a precursor powder. The precursor powder is then heat-treated at high temperature and cooled to obtain W-C powder, which is mechanically mixed with conductive carbon powder in an organic solvent to obtain a W-C / C composite support. This support is dispersed in a solvent, and a platinum source is added for reduction. The resulting product is washed and dried to obtain the Pt / W-C / C catalyst. The catalyst is then slurried and coated onto both sides of a proton exchange membrane to form a three-in-one membrane electrode. This invention provides a relatively simple and highly controllable preparation method. By combining hydrothermal synthesis with high-temperature carbonization, the uniform formation and high stability of the W-C framework are ensured. Furthermore, through optimized platinum loading and ionic liquid doping processes, the controllable preparation of a high-performance, high-durability membrane electrode is achieved.

This utility model discloses a novel copper cylinder for TGV and ceramic filling electroplating, relating to the field of copper cylinder technology. It includes a copper cylinder body, with a left-right oscillating motor on one side and an eccentric wheel assembly at the output end of the oscillating motor. Two rows of side spray pipes are symmetrically arranged within the copper cylinder body, with the nozzles of the two rows of side spray pipes installed alternately. A hanger for suspending workpieces is provided between the two rows of side spray pipes. The two ends of the hanger are fixed to the middle position of the copper cylinder body via hanger guide grooves. This utility model, based on a traditional copper cylinder, changes the original left-right oscillating cathode flat plate and hanger to a fixed installation, and changes the side spray pipes to left-right oscillation, keeping the relative position of the hanger and anode unchanged, thereby forming a more uniform electroplating layer and improving electroplating uniformity.

The application discloses a recyclable blow molding grade thermoplastic polyester elastomer and a preparation method thereof, which is prepared from the following components according to weight parts: thermoplastic polyester elastomer 92-99 parts, isocyanate chain extender 1-3 parts, difunctional epoxy resin 0.8-2.4 parts, and antioxidant 0.1-0.8%. In the blow molding process, the chain extender dimer and the epoxy group become the source of chain extension slow release, part of the dimer decomposes into monomers, and the monomers are chain-extended again, and meanwhile the remaining epoxy groups also participate in chain extension. The loss of chain scission degradation at high temperature is made up, the melt index and other performance changes are still small, and 100% secondary material is independently used. Through 5 times of double screw extrusion test, the melt index of the thermoplastic polyester elastomer changes very little, which provides reliable guarantee for the separate multiple recycling of the blow molding grade thermoplastic polyester elastomer in the factory.

The present application relates to the field of preparation of bio-based multi-level pore carbon material and environmental governance, in particular to a kind of bio-based three-dimensional multi-level pore carbon material and its preparation method and application.The preparation method of bio-based three-dimensional multi-level pore carbon material of the present application includes the following steps: biomass raw material and phenol, composite acid catalyst are mixed and reacted 1, to obtain bio-based liquefied material;Bio-based liquefied material is mixed with composite base catalyst and polyformaldehyde, and then reacted 2, to obtain bio-based liquefied resin;Bio-based liquefied resin is mixed with surfactant, foaming agent, metal-based DES and curing agent, and then foamed, to obtain carbonization precursor;The carbonization precursor is subjected to carbonization treatment, and then ultrasonic water washing is carried out, to obtain bio-based three-dimensional multi-level pore carbon material.The bio-based three-dimensional multi-level pore carbon material prepared by the method of the present application has uniform structure, contains micron-nanometer multi-level pore structure, and has high adsorption performance.

This invention provides a high-performance copper-phosphorus alloy based on grain optimization and its preparation method. The copper-phosphorus alloy comprises the following components in the indicated mass percentages: Cu 75%-85%, P 10%-15%, Al 2%-5%, Ti 1%-3%, rare earth elements 0.1%-0.5%, and the remainder being Fe; the rare earth elements are one or more combinations of cerium, lanthanum, and dysprosium. The preparation method includes batching, smelting, preliminary cooling, casting and rolling, rapid cooling, heat treatment, machining, and surface treatment. The copper-phosphorus alloy of this invention achieves high performance through grain optimization and is suitable for industrial applications requiring high strength, high hardness, and good plasticity and toughness.

The present invention provides a tin-silver plating solution, characterized by comprising a tin ion source, a silver ion (Ag + ) source, and an organic additive containing a silver (Ag) complexing agent, a tin carrier, and a grain refiner, whereby, in the case of high-speed plating using the above-described plating solution, whisker generation can be reduced, and, with the silver ion (Ag + ) component in the tin-silver plating solution being uniformly maintained, the silver component in the formed tin-silver solder bump can be uniformly formed.

This invention belongs to the field of iron and steel metallurgical technology, specifically disclosing an automatic control smelting method for a low-silicon, high-manganese molten iron converter. The method includes: adjusting the lance position by adjusting the oxygen lance in stages (high-low-high); adjusting material and temperature parameters by selecting qualified molten iron with a temperature of 1220-1400℃, a silicon content ≤0.20%, a manganese content ≥0.60%, controlling the molten iron ratio at 83%, and controlling the initial molten pool temperature at 1380-1430℃ and the middle and later stages at 1620-1680℃; and controlling the oxygen supply intensity by stabilizing the initial oxygen level below 8% and maintaining the converter oxygen supply intensity stably at 3.2m. 3 / t·h; In the medium term, starting from an oxygen supply of 15%, the oxygen supply intensity will be increased from 3.2m 3 / t·h decreased to 3.08m 3 The oxygen supply intensity is maintained at 3.2 m / t·h until the final carbon extraction stage; later, when the oxygen step reaches 25%, the oxygen supply intensity is increased back to 3.2 m / t·h. 3 / t·h.

The invention relates to the field of sodium ion batteries, and discloses a preparation method and application of an additive induced coordination compound derived Bi nitrogen-doped carbon composite material. The preparation method comprises the following steps: chelating an organic ligand with Bi ions in bismuth salt through a mechanochemical method to obtain a precursor Bi-HMT; subsequently, mixing and grinding the precursor and an additive to obtain an intermediate product, and performing high-temperature pyrolysis and carbon thermal reduction on the intermediate product to obtain a final product Bi nitrogen-doped carbon composite material. When the material is used as a sodium ion battery negative electrode, a nitrogen-doped carbon skeleton generated based on in-situ conversion of a coordination compound and an additive can be tightly combined with Bi particles, agglomeration among the Bi particles is avoided, volume change caused by intercalation and deintercalation of sodium ions is effectively relieved, heteroatom nitrogen is introduced through an organic ligand to modify the carbon skeleton, and the specific surface area of the material is increased. The chemical affinity of the material is improved, the overall conductivity of the composite material is improved, and the cycling stability and the rate capability of the material are enhanced.

The invention discloses a method for synthesizing a manganese-based metal organic framework material at low temperature, and relates to the technical field of metal organic framework materials and material synthesis. The preparation method comprises the following steps: preparing a mixed solution of H2BDC and MnCl2; rapidly injecting triethylamine into the solution, fully mixing, placing in a low-temperature freezing environment, and carrying out coordination polymerization-nucleation-growth; after coordination polymerization, nucleation and growth are completed, room-temperature unfreezing is conducted, sediment is separated from a reaction solution through centrifugal operation after unfreezing, and the manganese-based metal organic framework material is obtained through washing and drying. The synthesis of the metal organic framework material can be completed through low-temperature standing, zero heating and zero high pressure are realized in the whole process, the energy consumption and the safety risk are synchronously reduced to the minimum, and the realization is simple; and synthesis can be realized without an ultrasonic probe, a microwave cavity or vacuum / electrolysis equipment or low-temperature equipment or even outdoor in winter, so that the investment and operation cost is remarkably reduced.