27results about How to "Short preparation time" patented technology

The application provides a UN-U3Si2 composite pellet sintering method based on spark plasma sintering, which comprises the following steps: crushing and ball-milling U3Si2 ingots to obtain U3Si2 powder; preparing UN powder; respectively weighing UN powder and U3Si2 powder in a set mass ratio in an inert gas glove box and uniformly mixing; pre-pressing the mixed powder into a graphite mold; taking out the graphite mold containing the UN-U3Si2 mixed powder from the glove box after pre-pressing; and densifying the UN-U3Si2 mixed powder through spark plasma sintering to prepare UN-U3Si2 two-phase composite fuel pellets. The UN-U3Si2 composite fuel pellets are rapidly densified through the spark plasma sintering process.

This invention discloses a method for preparing interface-reinforced niobium pentoxide / porous graphene and its energy storage application. The method involves adding porous graphene oxide during the solvothermal synthesis of a niobium pentoxide precursor to obtain a composite precursor of niobium pentoxide and porous graphene oxide. This precursor is then annealed under a protective atmosphere to obtain the interface-reinforced niobium pentoxide / porous graphene composite material. The composite material obtained by this invention exhibits excellent performance as an electrochemical energy storage material. Furthermore, the preparation method of this invention is simple to operate, requires no complex equipment, and is easily controlled, making it suitable for mass production.

The application discloses a kind of solid electrolyte material and its preparation method, positive pole piece, solid electrolyte film and full solid battery, it is related to solid battery field;Method comprises: lithium lanthanum zirconium oxygen base solid electrolyte is dispersed in first solvent, and electrolyte dispersion liquid is made;Acidic pH regulator is added to the electrolyte dispersion liquid, and the pH of the electrolyte dispersion liquid is adjusted to 7~8, and neutral dispersion liquid is obtained;Orthosilicate is added to the neutral dispersion liquid and mixed to obtain dispersion solution;During mixing process, polysiloxane is formed by the reaction of orthosilicate, and polysiloxane is coated on the surface of lithium lanthanum zirconium oxygen base solid electrolyte;The dispersion solution is subjected to electrolyte separation and drying treatment to obtain a solid electrolyte material.The application aims to improve the surface properties of lithium lanthanum zirconium oxygen base solid electrolyte, so that it can build good interface contact with other inorganic materials.

The application discloses a preparation method of a CoCrNi medium-entropy alloy material for additive manufacturing, and the CrCoNi medium-entropy alloy and the preparation method thereof comprise the following steps: a. adding 0%-1wt% of rare earth CeO2 into the CrCoNi medium-entropy alloy, and mixing powder according to ingredient design; b. inputting a workpiece scanning path file into a computer, and printing a single-variable medium-entropy alloy ingot at a set step scanning speed (600-900mm / s). The application optimizes the compactness of the CoCrNi medium-entropy alloy and reduces defects by adjusting process parameters of additive manufacturing, so that an additive manufacturing workpiece with high strength, good fracture toughness and good strength-plasticity matching is obtained. Compared with the prior art, the application optimizes the compactness of the CoCrNi medium-entropy alloy and reduces defects by adjusting process parameters of additive manufacturing, so that an additive manufacturing workpiece with high strength, good fracture toughness and good strength-plasticity matching is obtained.

The invention provides a preparation method of a molybdenum disulfide-containing transmission electron microscope sample. The preparation method comprises the following steps: step 1, carrying out ultrasonic dispersion on a to-be-tested sample and an organic solvent; step 2, dropwise adding the supernatant dispersed in the step 1 onto a carbon film, and then drying the carbon film under a vacuum condition; and step 3, putting the dried carbon film into a carbon spraying instrument, and performing carbon spraying and film coating to obtain the transmission electron microscope sample. According to the preparation method of the molybdenum disulfide-containing transmission electron microscope sample, the problem that molybdenum disulfide is easily oxidized by air in the preparation process of the transmission electron microscope sample can be avoided, the method is simple, the preparation time is short, and a high-resolution transmission electron microscope image of a molybdenum disulfide stripe phase can be quickly obtained; the method is further used for catalyst structure and performance research.

The application discloses a preparation method of high-strength and high-ductility titanium-based composite material with a composition gradient, and comprises the following steps: 1, material selection: selecting a plurality of Mo equivalent different beta type titanium alloy powder as a matrix material, and selecting carbon nanoparticles as a precursor material of a reinforcing body; 2, powder mixing: placing the plurality of Mo equivalent different beta type titanium alloy powder and the carbon nanoparticles in a ball mill and ball milling and uniformly mixing; 3, forming: performing plasma sintering forming on the mixed powder; 4, heat treatment: performing solid solution treatment on a titanium-based composite material blank to obtain the high-strength and high-ductility titanium-based composite material with the composition gradient. The application utilizes a powder metallurgy method to sinter the plurality of Mo equivalent different beta type titanium alloy powder and the carbon nanoparticles into a bulk alloy, so that the sintered bulk alloy has the composition gradient, and the prepared titanium-based composite material with the composition gradient has excellent mechanical properties and is a high-strength and high-elongation composite material.

The application relates to the technical field of ultra-high-temperature ceramic materials, in particular to a preparation method of an ultra-high-temperature ceramic material, which comprises the following steps: uniformly mixing silicon-yttrium alloy powder I, zirconium boride and graphite to obtain initial powder; under an inert atmosphere, performing ball milling treatment on the initial powder, then performing forming processing to prepare ceramic green body material; and performing reaction melt impregnation on the ceramic green body material and silicon-yttrium alloy powder II at 1200-1500 DEG C to obtain ZrB2-YSi2-SiC ultra-high-temperature ceramic material. The application adopts the method of reaction melt impregnation to prepare high-density ultra-high-temperature ceramic material; under a high-temperature service environment, the binary-doped modified ZrB2 ceramic forms a dense oxide layer under high-temperature oxidation conditions, so as to improve the anti-oxidation corrosion performance of the material.

This invention discloses a method for preparing a urushiol-based hydrophobic coating with a micro / nano rough structure. The method uses urushiol and organic polyamines as main raw materials, and involves sequential prepolymerization and precipitation polymerization to construct a highly hydrophobic micro / nano rough structure surface coating on different substrates. This method utilizes renewable natural polymer materials as main raw materials, achieving highly hydrophobic modification of various materials without the need for chemical modifications such as silane modifiers. It is environmentally friendly, versatile, and allows for large-scale construction of micro / nano rough structure hydrophobic coatings using simple processes and mild conditions, significantly improving the efficiency of large-scale preparation of such functional coatings. This effectively solves the problems of low efficiency and high cost in existing methods for large-scale preparation of micro / nano rough structure hydrophobic surfaces.

This invention discloses a remotely controllable hydraulic self-unloading mining car, relating to the field of self-unloading mining car technology. The self-unloading car includes a conveyor mounted on the lower surface of the rear of its frame. A track is installed on the conveyor, and several first drive motors are mounted on the outer surface of the conveyor's rotating working surface. Each first drive motor has a second drive motor mounted at its front end. A retractable and foldable folding and pushing mechanism is mounted on the front surface of each second drive motor. By setting a conveyor, folding and pushing mechanism, and a winding mechanism below the rear of the self-unloading car frame, this invention can actively push the material at the rear of the car backward during unloading, clearing material accumulation below the discharge port in real time. This fundamentally prevents material from blocking the rear of the car and causing unloading interruptions, enabling continuous unloading without the vehicle moving forward, significantly improving unloading efficiency.

The utility model discloses a conductive slip ring with conductive contacts arranged in the radial direction, and belongs to the technical field of manufacturing of conductive slip rings rotating at high speed. The motor comprises a housing, a stator and a rotor. The rotor is in the shape of a rotary body with a built-in axial through hole, a step surface is arranged at the front end of the rotor, side-by-side conducting rings are embedded into other outer circle parts except the step surface, and a bearing is tightly sleeved on the step surface; each conducting ring is externally connected with a rotor connecting wire, and the free end of the rotor connecting wire extends out of the rotor. The stator is tightly connected to the outer circle face of the bearing in a sleeved mode, symmetrical installation spaces are reserved in the portions, connected to the peripheries of the conducting rings in a sleeved mode, of the stator, a circuit board is fixedly connected in each installation space, conducting contacts which are arranged in the radial direction are connected to the circuit boards, the conducting contacts correspond to the conducting rings one to one, and the bottom ends of the conducting contacts abut against the ring faces of the conducting rings. And each conductive contact is externally connected with a stator connecting wire. According to the utility model, the installation mode of radial arrangement of the conductive contacts is easy to realize abutting operation so as to effectively reduce the risk of power failure.

The utility model relates to a medium wave station antenna tuning network distribution room control system comprising a sensor detection device which comprises a travel switch and is used for detecting whether an access door of a distribution room is opened or not; the logic control device comprises a main power supply air switch, a function execution power supply air switch, a wall socket power supply air switch and an alternating current contactor; the function execution device comprises a lighting switch, a ventilation switch, an alarm switch, a lighting device, a ventilation device and an alarm device; and the function execution device is connected with the function execution power supply air switch. Whether the access door is opened or not can be known through the sensor detection device, and after the access door is opened, the logic control device receives a short circuit signal sent by the travel switch, controls the function execution device to work and gives an alarm, so that the safety of personnel is ensured, and illumination, ventilation and the like are provided for maintenance. The method has the characteristics of short preparation time of maintenance work, high maintenance efficiency and high safety.

The invention belongs to the technical field of new material preparation, and particularly discloses a high-entropy halogen-terminated MXene material and a preparation method thereof.The preparation method comprises the following steps that S1, a high-entropy MAX sample, an etching agent and molten salt raw materials are mixed according to the proportion, and then high-temperature annealing treatment is conducted under inert gas protection; s2, heating and washing with a washing solvent until impurities are removed, and then carrying out suction filtration and washing with ultrapure water until the solution is neutral; and S3, carrying out drying treatment to obtain the accordion-shaped multi-layer and single-end-group high-entropy MXene. According to the high-entropy halogen-terminated MXene material and the preparation method thereof, precise regulation and control of surface functional groups of high-entropy MXene are realized, and the application performance of the high-entropy halogen-terminated MXene material in the target fields of energy storage, catalysis and the like is improved by regulating and controlling the reaction temperature and the heat preservation time in the molten salt and directionally regulating and controlling the types of the surface functional groups of the product through the etching agent.

This invention belongs to the field of nanomaterial preparation technology, specifically disclosing a method for preparing ultrasmall selenium nanomaterials using physical vapor deposition (PVD) and its applications. This method involves placing selenium powder and sodium chloride in a tube furnace and performing gradient temperature-controlled vapor deposition under an inert gas environment to prepare ultrasmall selenium nanomaterials with a particle size of 2-5 nm. Compared to traditional solution methods, this process avoids the use of organic solvents, and post-processing only requires dissolution and centrifugation purification. It has advantages such as large-scale production capability, high product purity, and short preparation time (30 min), making it suitable for large-scale production. The ultrasmall selenium nanomaterials prepared by this invention have significant application potential in sodium-ion batteries, optoelectronic devices, immunotherapy, and selenium fertilizers (quantum dot selenium bio-fortifiers).

The present application relates to the technical field of photocatalytic treatment of antibiotics in wastewater, and particularly relates to a composite photocatalytic material, a preparation method and application thereof. Melamine, palygorskite and water are mixed to obtain a mixed solution; the mixed solution is mixed with melamine foam, and after the melamine foam absorbs the mixed solution, drying is performed to obtain a precursor; the precursor is calcined to obtain the composite photocatalytic material. The composite photocatalytic material prepared by the present application can effectively improve the performance of the material in adsorbing antibiotics in water, enhance the photocatalytic degradation activity, and is easy to recycle, thus having a broad development prospect.

This invention belongs to the field of organic chemical technology and relates to an apparatus and method for preparing N,N-dibutylformamide. The apparatus includes a first distillation column, a second distillation column, a third distillation column, and connecting pipelines. Using the apparatus and method of this invention, high-purity N,N-dibutylformamide can be prepared safely and stably with high reaction efficiency and production capacity, short preparation time, low methyl formate loss, minimal equipment wear, low energy consumption, and high safety and stability.

The utility model discloses a pipeline measuring device, which belongs to the technical field of pipeline measurement, and comprises a feeler lever and a mud binding rod, one end of the feeler lever is held by a person on the ground, the feeler lever is transversely connected with a lantern ring, the lantern ring is connected with the mud binding rod, and the mud binding rod can slide along the well depth direction relative to the lantern ring. The mud pricking rod is used for making contact with the bottom face of a pipeline, the distance between the contact point of the mud pricking rod and the bottom face of the pipeline and the top end of the lantern ring is a first distance, the distance between the position, parallel to the ground, of the probing rod and the top end of the lantern ring is a second distance, and the sum of the first distance and the second distance is the well depth size. The device can be flexibly adjusted and used according to different well depths, the adaptation range is wide, measurement personnel do not need to go down a well and can operate measurement on the ground, the preparation time is short, potential safety hazards are avoided, and the measurement efficiency is improved.

This invention relates to a mold for manufacturing molded fiber products. The mold (11) includes a porous product surface (23) formed by additive manufacturing. The product surface (23) is arranged as a double-layer structure (40) comprising two layers (41, 42). A cavity (43) exists between the two layers (41, 42), wherein the first layer (41) has porosity from the cavity (43) to the product surface (23). The second layer (42) has perforations isolated from the cavity (43) and extends from the product surface (23) through the double-layer structure (40).

The utility model discloses an automatic seasoning oil stirring device which comprises an oil tank, a pumping mechanism, a pumping pipeline and a circulating pipeline, a sealing cover is arranged at the top of the oil tank, and the pumping mechanism is arranged on the side edge of the oil tank; the pumping pipeline is connected between the discharging end of the pumping mechanism and the top of the sealing cover in series and used for pumping oil or raw materials into the oil tank. The circulating pipeline is connected between the discharging end of the oil tank and the feeding end of the pumping pipeline in series and used for circulating and discharging oil at the oil tank. The pumping mechanism is arranged, and meanwhile, the circulating pipeline is additionally arranged, so that the discharging end and the feeding end of the oil tank are connected in series, pumping circulation of oil from the bottom of the oil tank to the top of the oil tank is carried out through the pumping mechanism, and deposited materials and paste can be stably circulated to the top of the oil tank; the oil, the materials and the paste can be fully mixed after the stirring, and meanwhile, the preparation time of the oil is shorter.

The invention discloses an echelon utilization method of nitrate-containing wastewater, which comprises the following steps: S1, catalyst preparation: preparing a carbon fiber loaded metal particle catalyst by using metal nitrate in the nitrate-containing wastewater through soaking loading and Joule heat treatment; and S2, electrochemical reduction: assembling the catalyst into a membrane electrode assembly, and reducing nitrate ions in the nitrate-containing wastewater used in the step S1 or from another source into ammonia under an electrochemical condition. The method realizes synergetic recycling of metal ions and nitrate ions in the wastewater, forms a closed-loop process of treating waste with waste and turning waste into wealth, has the advantages of no secondary pollution, low cost, stable catalytic performance and capability of producing high-added-value ammonia products, and is suitable for nitrate-containing wastewater treatment in industries such as agriculture, photovoltaics, semiconductors and the like.

The invention relates to the technical field of microorganisms, and discloses a fungus, application thereof and a method for preparing resveratrol. The preservation number of the fungus (Penicillium georgiense) HZ01 is CDMCC (China General Microbiological Culture Collection Center) No: 67695. The fungus (Penicillium georgiense) HZ01 can generate high-activity beta-glucosidase, so that polygonum cuspidatum can be efficiently converted into resveratrol, the preparation time is short, the conversion rate of polydatin is high, and the yield and yield of resveratrol are higher; meanwhile, the preparation conditions are mild, safe, reliable and environment-friendly, and large-scale preparation is easy.

The application discloses a lithium battery diaphragm with a warning function, which is a sandwich structure of three or more layers of nanofibers, and comprises a pure film and a conductive composite layer with a warning function in the middle. The application also includes adding functional materials to the lithium battery diaphragm with a warning function, so that the diaphragm has a composite function other than the warning function, for example, adding a flame-retardant coating to make the diaphragm have a flame-retardant function in addition to the warning function. The lithium battery diaphragm provided by the application not only has the characteristics of a natural three-dimensional nanometer network structure, good thermal stability, high liquid absorption rate, high ion conductivity and the like compared with traditional commercial polyolefin diaphragms, but also has unique warning and optional flame-retardant functions, which greatly ensures the safety of lithium batteries.

The invention discloses casting equipment for navigation lifesaving equipment, and belongs to the technical field of lifesaving casting devices, the casting equipment comprises a casting device, a plurality of traction devices and lifesaving equipment, the casting device is provided with a single group of independent casting cavity channels, and the traction devices and the lifesaving equipment are both provided with a plurality of groups of independent casting cavity channels. Each group of traction devices is matched with a single group of lifesaving equipment in a one-to-one correspondence manner, and the plurality of groups of traction devices can be sequentially switched to be correspondingly matched with the casting station of the casting device. A single cavity channel is matched with a plurality of groups of switchable traction devices, so that continuous casting operation and independent traction matching of each lifesaving device are realized; the rope releasing speed is controlled in a closed-loop mode through weight data, the buffering allowance is reserved in the whole process to pull the rope, casting reverse damping is eliminated, the problems that existing equipment is low in rescue effectiveness, limited in casting performance and low in response speed are solved, and the maritime emergency rescue reliability is greatly improved.

The present application relates to a preparation method of p-allyloxy benzene sulfonic acid lithium, wherein sodium p-allyloxy benzene sulfonate is prepared into the p-allyloxy benzene sulfonic acid lithium under the action of strong acidic cation exchange resin and lithium salt. The raw material used in the preparation method of the present application is simple and easy to obtain, the preparation time is short, the side reaction is less, the post-treatment is simple, the yield and product purity are high. The p-allyloxy benzene sulfonic acid lithium (SAPE-Li) prepared by the present application can be used in the field of lithium battery electrolyte additives.

The invention relates to a method and device for debugging air volume balance of a pellet solid-solid heat exchange dust removal system, and belongs to the technical field of industrial ventilation and dust removal. S2, measuring the air volume of a reference tuyere; s3, the resistance of the main guide pipeline is adjusted; s4, performing equal-ratio imbalance correction on the branch pipelines; and S5, iterative fine tuning and verification are carried out. According to the method, calibration of the leading pipeline and the equal-ratio imbalance algorithm are organically combined, a complete, efficient and accurate air volume balance debugging solution is formed, and many defects in the prior art are effectively overcome.

This invention discloses a magnesium battery cycle stability enhancement material, which is obtained by dissolving an appropriate amount of vanadium source and surfactant in a mixed solution of isopropanol and diethylene glycol, followed by solvothermal reaction and calcination. This method offers high production efficiency, large production volume, fast preparation time, low cost, and excellent reproducibility, avoiding the problem of traditional sheet-like V2O5 agglomeration. Using coral-like V2O5 nanomaterials as the cathode material for magnesium batteries, its open three-dimensional porous structure not only increases ion attachment sites but also provides multiple pathways for electron transfer. Furthermore, the exposed (110) crystal planes reduce interfacial side reactions between the electrode and electrolyte surfaces, reduce the formation of passivation films on the electrode surface, thereby accelerating the redox reaction of the battery. It exhibits very high capacity storage and good rate performance, making it an excellent cathode material for magnesium batteries.

The application discloses a kind of double-vacancy ZnCdS solid solution photocatalyst and its preparation method and application, preparation method includes adding cadmium source, zinc source and sulfur source into anhydrous ethanol and stirring dissolution, the mass ratio of cadmium source, zinc source, sulfur source is 1:9:3, under the condition of 70~90 ℃ water bath reaction, after suction filtration, washing, drying, obtain powdery ZnCdS solid solution, NaOH is added to water and stirred and dissolved, then add powdery ZnCdS solid solution, again ultrasonic treatment, after suction filtration, washing, drying, obtain double-vacancy ZnCdS solid solution photocatalyst.The preparation method of the application has the advantages of high hydrogen production rate, good repeatability, simple preparation, low cost, etc., the obtained double-vacancy ZnCdS solid solution photocatalyst can be applied to the field of photocatalytic hydrogen production, and the hydrogen production efficiency is as high as 12.69mmol·g ‑1 ·h ‑1 , which is 23.94 times that of pure ZnS and 11.64 times that of pure CdS.

The application provides a launching device, belonging to the field of projectile launching devices. The launching device comprises a cylinder, a gas pressure cavity is formed in the cylinder; an air inlet hole and an air outlet hole, both of which are formed on the cylinder; a launching tube, which is arranged on the cylinder and is in communication with the gas pressure cavity through the air outlet hole; an opening and closing valve core, which is located in the cylinder and is slidingly installed in the cylinder, the opening and closing valve core opens and closes the air outlet hole, and the sliding direction of the opening and closing valve core is parallel to the axis direction of the launching tube; and an opening and closing assembly, which comprises an unlocking jacking rod, the unlocking jacking rod is slidingly installed in the launching tube, the sliding direction of the unlocking jacking rod is parallel to the axis direction of the launching tube, and the unlocking jacking rod slides and pushes the opening and closing valve core to open the air outlet hole. The opening and closing valve core arranged in the application can make the gas pressure cavity in a sealed state, when the projectile needs to be launched, the unlocking jacking rod is slid and the opening and closing valve core is pushed to open the air outlet hole, and the high-pressure gas in the gas pressure cavity can launch the projectile.