362 results about "Ultrasonic oscillation" patented technology

The invention belongs to the technical field of sodium ion batteries, and particularly relates to a sodium ferric sulfate composite positive electrode material and a preparation method and application thereof. The preparation method of the sodium ferric sulfate composite positive electrode material provided by the invention comprises the following steps: (1) preparing a carbon-coated sodium ferric sulfate positive electrode material, mixing the sodium ferric sulfate positive electrode material with a citric acid solution, and performing ultrasonic treatment to obtain a modified sodium ferric sulfate positive electrode material; (2) stirring and mixing the modified sodium ferric sulfate positive electrode material and a composite conductive agent, shearing and dispersing, and carrying out ultrasonic oscillation, wherein the rotating speed of stirring and mixing is less than or equal to 2000rpm; the rotating speed of the shearing dispersion is greater than or equal to 5000rpm. The sodium ferric sulfate composite positive electrode material provided by the invention has relatively low shear viscosity and relatively high thixotropic index under the condition that the solid content is greater than or equal to 65%.

The invention provides a biochar composite porous material for heavy metal contaminated soil remediation and a preparation method and application of the biochar composite porous material. The preparation method comprises the steps that biomass raw materials are subjected to high-temperature pyrolysis carbonization and then smashed, ground and sieved, and biochar powder is obtained; dispersing in a phosphoric acid solution to obtain a biochar solution, and filtering, washing and drying after a hydrothermal activation reaction to obtain activated biochar; dispersing in a chitosan solution, carrying out ultrasonic oscillation, filtering, washing and drying to obtain modified charcoal; mixing sodium bentonite, attapulgite and deionized water, uniformly mixing the modified charcoal, the functional slurry and a sodium carboxymethyl cellulose solution to obtain composite slurry, performing compression molding to obtain a green body, and then drying and calcining the green body. The biochar composite porous material prepared by the invention can simultaneously play multiple roles of physical adsorption, chemical chelation, ion exchange and the like in a heavy metal contaminated soil treatment process, so that efficient fixation of various heavy metal ions is realized.

The invention relates to the technical field of alloy processing, and discloses a high-performance corrosion-resistant nickel-based alloy plate and a preparation method thereof, and the method comprises the following steps: raw material preparation, smelting treatment, casting treatment, hot rolling treatment, solution treatment, aging treatment and surface passivation treatment. According to the invention, when a composite acid system is adopted for passivation treatment, the concentration of chromium / molybdenum atoms in a passivation film is optimized and balanced due to the specific ratio of nitric acid to chromic acid, a chromium oxide provides a compact passivation barrier, and a molybdenum oxide endows the film layer with a self-repairing characteristic to synergistically inhibit pitting nucleation; meanwhile, nano titanium dioxide particles pretreated by silane are embedded into the passivation film in situ under the action of ultrasonic oscillation, organic pollutants adsorbed on a film layer can be decomposed by the photocatalytic characteristic of the nano titanium dioxide particles, the local corrosion effect of a battery caused by dirt coverage is avoided, and the performance of the battery is improved through double upgrading of components and the structure of the passivation film. And the alloy plate has excellent pitting corrosion resistance and fouling resistance in a chloride ion-containing medium.

The invention belongs to the technical field of glass for buildings, and discloses a thermochromic intelligent window based on a vanadium dioxide nanoparticle film concentration gradient structure and a preparation method thereof.The preparation method comprises the steps that firstly, two parts of W-VO2 nanoparticles with different masses and PVP are added into absolute ethyl alcohol to be subjected to ultrasonic oscillation, and the W-VO2 nanoparticles and PVP are stirred to be evenly distributed and then stand for use; the method comprises the following steps: sequentially coating the surface of a pretreated glass substrate with W-VO2amp with relatively high concentration from bottom to top; a PVP dispersion liquid, a PMMA dispersion liquid, and low-concentration W-VO2amp are added; a PVP dispersion liquid; therefore, a W-VO2 gradient structure with low concentration at the top layer and high concentration at the bottom layer is formed on the surface of the glass substrate. The visible light transmittance of the thermochromic intelligent window is greatly improved, meanwhile, the solar modulation capacity is improved, the antagonism between the two optical properties of the visible light transmittance and the solar modulation efficiency is weakened or even broken through, and thermochromic development of the intelligent window and the radiation refrigeration field is further promoted.

The invention discloses a preparation method of a porous copper foil based on a hydrogel template and the porous copper fores.The method comprises the steps that firstly, a hydrogel solution is applied to the surface of a cathode roller in a spraying mode, and a hydrogel shielding point array is formed by means of the self-polymerization characteristic of the hydrogel solution; secondly, performing electrolysis operation by taking a cathode roller area outside the shielding point as a deposition site to prepare a composite copper foil mingled with the hydrogel shielding point; and then, stripping the composite copper foil from the cathode roller, placing the composite copper foil in an alkaline solution for ultrasonic treatment for 0.5-5 minutes, so that the hydrogel shielding point is swelled and then falls off through ultrasonic oscillation, and a pure porous copper foil is obtained. And finally, performing surface treatment on the porous copper foil by adopting a passivation solution to improve the stability of the porous copper foil. According to the method, accurate regulation and control of the porous structure are achieved through the hydrogel template, the preparation process is green and efficient, and the obtained porous copper foil is uniform in pore distribution, large in specific surface area and good in mechanical property.

The present solution provides a preparation method for a three-dimensional structured ferrous phosphate pigment with corrosion early warning capability, including following steps: preparing a ferrous ion-containing solution for providing ferrous ions, where the ferrous ion-containing solution includes a soluble ferrous salt and a surfactant but no oxidizing ions, and the ferrous ion-containing solution is maintained in an acidic environment; preparing an initial mixed solution for providing phosphate ions and ammonium ions; and performing ultrasonic refinement, heating, and holding on the intermediate mixed solution using an auxiliary device with ultrasonic oscillation and microwave heating functions to obtain a final mixed solution; and filtering out precipitates from the final mixed solution, and then transferring the precipitates to a vacuum environment for high-temperature heating treatment to obtain a three-dimensional structured ferrous phosphate pigment with corrosion early warning capability.

The invention relates to the technical field of sensor cleaning, and discloses a liquid level sensor cleaning method, system and equipment, a medium and a program product, the abnormity caused by attachments on the surface of a sensor can be accurately recognized by combining historical cleaning frequency and a liquid level monitoring data set, and resource waste caused by blind cleaning is avoided. Meanwhile, the influence of the change of the environmental condition of the liquid level sensor on the pollution speed and the cleaning requirement is considered, and long-term stable operation of the liquid level sensor in a complex environment is guaranteed. And furthermore, a target cleaning strategy optimization algorithm is matched according to different pollutant types, so that the cleaning intensity is ensured to be adaptive to pollutant characteristics, and the cleaning efficiency is improved. Furthermore, according to the determined target cleaning time and target cleaning intensity, the ultrasonic oscillation device is controlled to clean the liquid level sensor, timing and quantitative control over cleaning operation is achieved, and it is guaranteed that the liquid level sensor keeps stable measurement precision in long-term operation.

The invention relates to the technical field of bioengineering, in particular to an exosome separation and concentration method with marine animal source tissue as a raw material. Comprising the following steps: freeze-drying and crushing a marine animal source tissue sample; performing sample enzymolysis; and removing impurities and concentrating. According to the method disclosed by the invention, the exosome in the cells is fully dissociated through freeze-dried powder crushing and composite enzymolysis processes, and the filtering speed of the sample is accelerated by virtue of ultrasonic oscillation, so that the rapid and high-purity separation and concentration of the exosome in the marine animal source tissue are realized.

The invention provides a high-entropy ceramic strengthened coating based on induction heating, ultrasonic oscillation and pulse current assisted laser cladding and a preparation method thereof. The coating is prepared by taking TC4 titanium alloy powder, IN718 high-temperature alloy powder and nitride ceramic powder as raw materials through multi-field coupling assisted laser cladding. In the laser cladding process, an induction heating field is used for optimizing a molten pool temperature field and reducing residual stress; ceramic phase segregation is inhibited by using an ultrasonic oscillation field, and grains are refined; a pulse current field is utilized to improve molten pool fluidity and reduce pores. The porosity of the prepared coating is smaller than or equal to 0.05%, the bonding strength is larger than or equal to 520 MPa, the grain size is smaller than or equal to 20 micrometers, and the coating has the characteristics of high hardness, abrasion resistance, corrosion resistance and high temperature resistance and meets the requirement for equipment surface protection under the extreme working condition. Through multi-field cooperative regulation and control, the technical problems that a high-entropy ceramic coating is prone to cracking and poor in binding force are solved, the process is efficient, cost is low, and the method has remarkable industrial application value.

The utility model discloses a humidification type ceramic artware which comprises a base and a ceramic tank body, a liquid storage tank is clamped in the base, an ultrasonic oscillation rod is fixedly connected to the inner wall of the bottom of the liquid storage tank, an air outlet pipe is fixedly connected to the top end of the liquid storage tank, an air inlet hole is formed in one side of the air outlet pipe, and an air outlet hole is formed in the other side of the air outlet pipe. An ultraviolet lamp tube is fixedly connected to the circumferential inner wall of the air outlet pipe, a fan is fixedly connected between the circumferential inner walls of the air outlet pipe, a sealing cover is fixedly connected to the top end of the air outlet pipe, a limiting ring is fixedly connected to the top of the sealing cover, and a plurality of first air outlet holes and a plurality of second air outlet holes are formed in the top of the sealing cover; and the ceramic tank body is placed on the outer wall of the top of the base. The ceramic pot body is screwed to drive the mounting plate to rotate, so that the blocking block is driven to rotate, the size of the first air outlet hole or the second air outlet hole blocked by the blocking block is adjusted, the air outlet size is adjusted, and the applicability of the ceramic artware is improved.

The invention relates to continuous and efficient plant fiber yarn processing equipment and an automatic control method. The method comprises the following steps: setting parameters; constant tension establishment: the PLC realizes constant tension conveying based on tension feedback and speed feedforward; pre-infiltration is carried out; performing total immersion modification: running the yarns in a modification tank along a Z-shaped path, and starting ultrasonic oscillation at the same time; performing infrared preheating; washing and liquid squeezing: guiding the yarns into a washing unit to remove residual modified liquid, and then performing secondary liquid squeezing by a liquid squeezing unit to stabilize the moisture content; partitioned drying: performing roller surface contact heating and forced air drying; the tension and the temperature are monitored on line, and when the tension or the temperature exceeds the limit, a PLC conducts automatic linkage correction; cooling and rolling; and linkage control: performing master-slave or synchronous control with downstream pultrusion equipment according to the speed / tension signal. Compared with the prior art, the device has the advantages of realizing efficient and continuous automatic production, improving the efficiency, improving the modification uniformity and penetration depth, improving the product performance and the like.

This utility model relates to the field of solid-liquid separation technology, specifically an integrated solid-liquid separation device for kaolinite suspension, comprising a vertical flow sedimentation tank, a central feed pipe, a flow guiding component, and a drive component. The vertical flow sedimentation tank has a drain outlet at the bottom and an overflow weir at the top. A water collection tank is located outside the overflow weir, and water outlets are located on both sides of the water collection tank. The central feed pipe is located at the upper center of the vertical flow sedimentation tank and is connected to a water inlet pipe on one side. The flow guiding component includes a mounting base fixed inside the vertical flow sedimentation tank, and a flow guiding plate is fixed to the outer wall of the mounting base. The flow guiding plate is set at an inclined angle and has serrated protrusions on its surface. Multiple sets of ultrasonic oscillators are evenly spaced on the inner wall of the vertical flow sedimentation tank, which can realize the flow guiding control of the suspension, facilitate the extension of the material's residence time in the tank, increase the probability of particle sedimentation, and at the same time, promote particle collision and accelerate the agglomeration of kaolinite particles.

The utility model relates to the technical field of cubilose raw material treatment, and discloses a raw material treatment device for instant cubilose production, which comprises a cleaning machine, the outer wall of the cleaning machine is fixedly connected with a controller, the inside of the cleaning machine is fixedly connected with an ultrasonic oscillator, and the inner wall of the cleaning machine is fixedly connected with a mounting seat. A mounting assembly is arranged on the inner wall of the mounting base, a drainage assembly is arranged on one side in the cleaning machine, the mounting assembly comprises a connecting base, the outer wall of the connecting base is slidably connected to the inner wall of the mounting base, a button is slidably connected to one side of the inner wall of the connecting base, a spring is arranged in the button, and one end of the button is fixedly connected with a sliding rod. According to the bird's nest cleaning machine, a high-frequency oscillation signal is generated through ultrasonic oscillation, so that cleaning liquid in the cleaning machine generates a cavitation effect, impurities hidden in the cleaning liquid can be shaken off, it is ensured that all corners of bird's nest raw materials can be cleaned, and cleaning thoroughness is greatly improved.

The application discloses an ultrasonic decontamination tank and ultrasonic decontamination device for radioactive environment, which comprises an ultrasonic decontamination tank shell, an ultrasonic decontamination tank top cover, a cooling mechanism, an ultrasonic oscillation mechanism and a gas removal mechanism. The ultrasonic decontamination tank top cover is rotationally connected with the ultrasonic decontamination tank shell, and is used for opening and closing the ultrasonic decontamination tank shell by rotating to a preset position. The cooling mechanism, the ultrasonic oscillation mechanism and the gas removal mechanism are arranged in the ultrasonic decontamination tank shell respectively. The ultrasonic oscillation mechanism is used for cleaning through ultrasonic oscillation, and the gas removal mechanism is used for removing the gas accumulated at the bottom of a decontamination container. The ultrasonic decontamination tank and the ultrasonic decontamination device for radioactive environment have good decontamination and cleaning effect on aerosol on the surface of a product container, control the spread of pollution, greatly reduce the pollution to subsequent related equipment and reduce the waste amount.

The invention relates to the technical field of a plasma spraying process of a high-corrosion-resistance yttrium oxide coating and a gradient structure design method, and particularly discloses the plasma spraying process of the high-corrosion-resistance yttrium oxide coating and the gradient structure design method. The invention aims to solve the problems that a traditional plasma spraying yttrium oxide coating is high in porosity, non-uniform in microstructure, easy to crack and peel off due to mismatch of a thermal expansion coefficient and a metal matrix, and difficult to consider compactness, stress buffering and long-term stability at the same time. The method comprises the following steps: carrying out degreasing cleaning, sand blasting coarsening, ultrasonic oscillation and drying pretreatment on a substrate, carrying out high-corrosion-resistance yttrium oxide composite powder spraying by adopting plasma spraying parameters optimized by an orthogonal test, and arranging multiple layers of intermediate layers with components and thermal expansion coefficients in gradient transition between the substrate and a coating, follow-up heat treatment and nano sol hole sealing treatment are assisted. By adopting the technical scheme, low porosity, high bonding strength, excellent thermal mechanical stability and long-term corrosion resistance in a strong corrosion environment of the coating can be realized.

The utility model belongs to the technical field of automobile accessories, and particularly relates to rust removal equipment for new energy automobile accessory machining, which comprises a rust removal mechanism, the rust removal mechanism comprises an ultrasonic cleaning pool, a support, a telescopic component, a connecting frame, a motor, a supporting disc and a hook, the support is arranged on a pool body of the ultrasonic cleaning pool, the telescopic component is arranged on the support, and the connecting frame is arranged on the support. A connecting frame is arranged at the bottom of the telescopic part, a motor is arranged on the connecting frame, a supporting disc is arranged at the output end of the bottom of the motor, hooks which are evenly distributed are arranged at the bottom of the supporting disc, the automobile parts are hung on the hooks on the supporting disc, the telescopic part stretches out, and the automobile parts are put into an ultrasonic cleaning pool to be subjected to ultrasonic vibration rust removal. And rust on the outer portion of the automobile part falls off, and rust removal is conducted.

The application provides a preparation method of conductive paste for improving the conductivity of carbon nanotubes and application thereof. The method comprises the following steps: (1) preparing a catalyst by a sol-gel method, and placing the catalyst into a tube furnace and heating to 800 DEG C to nanometerize the catalyst particles; (2) placing a catalyst precursor into the tube furnace, heating to 680 DEG C under the protection of argon, and introducing a carbon source to grow carbon nanotubes by chemical vapor deposition; (3) placing the prepared carbon nanotubes into a graphitization furnace under the protection of argon, heating to a temperature range of 2000-2800 DEG C, keeping for 3 hours, cooling to room temperature, and taking out; and (4) taking out the carbon nanotubes, and preparing stable carbon nanotube conductive paste in a solution by ultrasonic oscillation and magnetic stirring. The application can effectively remove the metal catalyst and metal oxide carrier in the carbon nanotubes, and effectively improve the conductivity of the carbon nanotubes, and the application in lithium ion batteries is embodied by the first charge-discharge efficiency, cycle performance, rate performance and impedance performance.

An extraction and detection method of porphyrin compounds. The extraction method comprises the following steps: weighing a sample to be detected, adding an organic solvent A containing reagent B and reagent C, heating and refluxing, cooling to room temperature to obtain a mixture 1; ultrasonically oscillating the mixture 1 with ultrapure water and reagent D in sequence to obtain a mixture 2; centrifuging the mixture 2 to separate an organic phase and an aqueous phase; alkalinizing the aqueous phase to extract organic compounds from the aqueous phase to obtain free porphyrin components. The method solves the problems of low extraction efficiency, serious environmental pollution and difficulty in eliminating environmental matrix interference of the prior art, and realizes efficient, environmentally-friendly and accurate enrichment and detection of porphyrin compounds.

This application discloses a slurry for a flexible pressure sensor, its preparation method, and the sensor and its preparation method. The preparation method of the flexible pressure sensor slurry includes the following steps: In a first solvent, a conductive filler is ultrasonically dispersed. The conductive filler includes: (1) graphene oxide, or (2) the graphene oxide and multi-walled carbon nanotubes, wherein the mass ratio of the multi-walled carbon nanotubes to the graphene oxide is (0-3):(1-2). After the reaction, under ultrasonic oscillation, the remaining amine substances are removed using anhydrous ethanol, centrifuged, and pressure-sensitive powder is prepared. A binder, a curing agent, and the pressure-sensitive powder are mixed and ultrasonically dispersed in a second solvent to obtain a uniform slurry. The first solvent is ethylenediamine, hexamethylenediamine, or decanediamine. This application makes technical improvements to the slurry preparation and integration scheme for flexible pressure sensors based on carbon nanotubes.

A bonding apparatus includes an ultrasonic oscillator which generates ultrasonic vibration, a stage disposed under the ultrasonic oscillator, and an embossed sheet disposed between the ultrasonic oscillator and the stage. The embossed sheet includes a body and a plurality of protrusions protruding downward from a lower surface of the body which faces the stage.

The invention discloses modified activated carbon for indoor formaldehyde adsorption and a preparation method thereof. The method comprises the following steps: 1) preparing an amino acid solution; 2) dipping the activated carbon in an amino acid solution, carrying out ultrasonic oscillation for a certain time, and dipping for a preset time; 3) drying the impregnated activated carbon in a drying box; and 4) placing the dried activated carbon in a tubular furnace filled with shielding gas for high-temperature activation for 2-10 h. The high-temperature activation in the protective gas is beneficial to formation of micropores of the activated carbon, avoids the influence of air or oxygen on amino acid in the heating process, adsorbs the amino acid and derivatives thereof into the micropores formed by the activated carbon, greatly improves polarity modification of the activated carbon, increases effective oxygen-containing functional groups on the surface of the activated carbon, and improves the adsorption capacity of the activated carbon. The adsorption capacity of the activated carbon on formaldehyde polar molecules is enhanced, and the chemical adsorption effect on formaldehyde can be further promoted on the basis of physical adsorption of the activated carbon.

The application belongs to the technical field of composite materials, and relates to a preparation method of a kind of red mud reinforced anaerobic digestion biogas residue biochar loaded coating reduced graphene oxide layer carbon nitride (CN@rGO / RCH) high-efficiency catalyst, which comprises: CN and GO are fully stirred and ultrasonically dispersed in deionized water, and the solid-liquid mixture is hydrothermally reacted at 160-200 DEG C for 12-24 hours to obtain CN@GO; CN@GO and RCH are fully mixed and dispersed in deionized water, and are placed in a gas bath constant-temperature oscillation box for ultrasonic oscillation; after centrifugal drying, pyrolysis is carried out at 700-900 DEG C in an inert gas for 2-4 hours, and after cooling to room temperature, the catalyst is obtained. The prepared catalyst is applied to activate persulfate to degrade tetracycline in water. The preparation process is simple, controllable and environmentally friendly, and by loading and coating carbon nitride with reduced graphene oxide layer after anaerobic high-temperature pyrolysis and hydrochloric acid modification of red mud reinforced anaerobic digestion biogas residue, the environmental hazard solid waste produced by anaerobic digestion is recycled and reused, and the purpose of rapidly degrading tetracycline in water is achieved.

The invention discloses a preparation method of an iron ore concentrate powder scanning electron microscope sample, and belongs to the field of material analysis and testing. The preparation method comprises the following steps: (1) adding iron ore concentrate powder to be detected into absolute ethyl alcohol, and fully and uniformly shaking to obtain a sample solution; (2) adding a dispersing agent into the sample solution, and uniformly oscillating by using an ultrasonic method to obtain a solution after ultrasonic oscillation; and (3) pouring the solution subjected to ultrasonic oscillation into a sprayer, uniformly spraying the solution to the surface of a conductive adhesive tape fixed on an objective table of a scanning electron microscope through the sprayer, and naturally drying to obtain the iron ore concentrate powder scanning electron microscope sample. The method is simple in sample preparation process, uniform in iron ore concentrate particle dispersion and easy to operate, the problem of iron ore concentrate powder agglomeration is solved, meanwhile, a scanning electron microscope sample chamber is not polluted, and the observation result is real and reliable.

This utility model discloses a desalination device for bamboo shoot canning, including a desalination tank. Vertical plates are welded to the side walls of the desalination tank, and guide platforms are welded to the surface of the vertical plates. Beneficial effects: By activating the servo motor inside the drive housing, the gear at the output end of the servo motor rotates. Since the gear meshes with the rack of the guide platform, and the turnover box is fixedly connected to the drive housing, and the turnover box is slidably connected to two sliding rods inside the desalination tank, as the drive housing moves along the length of the guide platform, the drive housing drives the turnover box to pass sequentially through several water tanks opened from left to right within the desalination tank. During this process, by activating the extension and retraction of the electric cylinder inside the turnover box, the lifting block at the bottom of the electric cylinder drives the basket to rise and fall, allowing the basket to flexibly switch between being above the water tank and submerged inside the water tank. Combined with the ultrasonic vibrating plates installed in the corresponding water tanks, it has the advantages of multi-stage ultrasonic oscillation desalination and flexible turnover.

A hydrogen evolution electrode preparation method based on a three-period minimal curved surface structure belongs to the technical field of new energy electrolytic hydrogen production and fluid transportation, and comprises the following steps: constructing a three-dimensional model of the required three-period minimal curved surface structure; performing image slicing processing on the three-dimensional model by using slicing software; printing a required three-period minimal curved surface structure by using a plane projection micro-stereolithography 3D printer; a nanometer ultraviolet lamp is adopted to circularly irradiate the three-period extremely-small curved surface structure; soaking in a sulfuric acid solution and carrying out ultrasonic oscillation; carrying out vacuum drying and carrying out oxygen plasma hydrophilic treatment; depositing a nickel-based compact conductive layer on the three-period minimal curved surface structure by using chemical deposition; depositing a nickel-iron alloy catalyst on the three-period minimal curved surface structure of the nickel substrate by using electro-deposition; and carrying out ultrasonic oscillation with ethanol and vacuum drying. According to the application, collaborative design of catalyst distribution and a macro-microstructure is realized, and a new way is provided for preparation of a high-performance water electrolysis hydrogen production electrode.

In one aspect, methods of treating and / or imaging biological tissue or a biological compartment are described herein. In some embodiments, a method comprises disposing a population of agents, such as a therapeutic agent, imaging agent, theranostic agent, or other agent in the biological compartment. The method further comprises applying a focused ultrasound beam to a first target region of the biological compartment to compress at least a portion of the first target region, and subsequently removing the focused ultrasound beam from the first target region to end the compression or compressive force applied to the first target region. In some cases, the focused ultrasound beam has a duty cycle greater than 5% and / or a frequency of 1-30 MHz. In some instances, applying the ultrasound beam creates a first order ultrasound oscillation wave within the biological compartment having a pressure gradient in one or more dimensions of 0.1 to 10 MPa / mm.

The present application relates to gas hydrate formation and carbon dioxide capture and storage technology field, specifically relates to a kind of hydrate formation accelerant and its preparation method and application, the hydrate formation accelerant is composed of water and L-methionine modified multi-walled carbon nanotube dispersed in water, by washing and drying after acid treatment multi-walled carbon nanotube, add L-methionine, sufficient ultrasonic oscillation, room temperature is fully stirred and adsorbed, again purification and drying, obtain L-methionine modified multi-walled carbon nanotube, again it is dispersed in water, and is configured into.In the application of carbon dioxide hydrate synthesis, using the hydrate formation accelerant, improve hydrate gas consumption while significantly improving hydrate initial formation rate, significantly shorten the overall time of hydrate formation, realize the efficient capture and storage of carbon dioxide, provide broad prospects for the practical application of hydrate technology capture, store carbon dioxide.

The invention relates to the technical field of silver powder wastewater treatment, in particular to a high-salt and high-COD silver powder wastewater treatment device and method. The technical problems that in the prior art, in the high-salt and high-COD silver powder wastewater treatment process, in the prior art, microelectrolysis reaction is prone to being inhibited by salinity, so that iron-carbon filler passivation is caused, the feeding amount of a Fenton oxidation agent depends on empirical estimation, dynamic regulation and control are lacked in the evaporative crystallization process, the overall treatment efficiency is low, and energy consumption exceeds the standard are solved. According to the technical scheme, according to the high-salt high-COD silver powder wastewater treatment device and method, wastewater parameters are obtained in real time through an online monitoring device, a dynamic wastewater treatment model is constructed based on an LSTM neural network, and an optimal treatment parameter combination is predicted; the micro-electrolysis current, the hydrogen peroxide adding proportion and the evaporation rate are dynamically optimized through the LSTM neural network, the wrapping effect of salt on filler is broken through combination of micro-electrolysis and ultrasonic oscillation, chemical adding is accurately controlled through an intelligent algorithm, the treatment efficiency is improved, and the operation cost is reduced.

The invention discloses an iron-based nanocrystalline soft magnetic composite material with high saturation flux density, high frequency and low loss. The iron-based nanocrystalline soft magnetic composite material has the chemical composition of FeaCobSicBdPeCufNbg, wherein 72 < = a < = 75, 0 < = b < = 3, 0 < = c < = 9, 0 < = d < = 10, 0 < = e < = 4, 0.5 < = f < = 0.7, 1 < = g < = 1.5, and a + b + c + d + e + f + g = 100. The invention further discloses a preparation method of the iron-based nanocrystalline soft magnetic composite material. The preparation method comprises the following steps that (1) iron-based amorphous alloy powder with the target particle size is obtained based on alloy smelting and atomization powder making; (2) adding the iron-based amorphous alloy powder into an organic solvent containing organic resin, and forming an organic resin coating layer outside the iron-based amorphous alloy powder under continuous ultrasonic oscillation; after coating, drying the powder, and carrying out cold press molding to obtain a green body; and (3) carrying out transverse magnetic field heat treatment on the green body at high temperature to obtain the iron-based nanocrystalline soft magnetic composite material.

The invention provides a carbon nanotube cold cathode, a preparation method thereof and an X-ray tube, and the preparation method of the carbon nanotube cold cathode comprises the following steps: carrying out ball milling on an agglomerated carbon nanotube to obtain carbon nanotube powder; mixing the carbon nanotube powder with a first solvent and an electrolyte solution, and performing ultrasonic oscillation to obtain a suspension; a metal substrate is placed in the suspension liquid for electrophoretic deposition, and the carbon nano tube thin film cold cathode is obtained; coating a curing agent on the carbon nano tube thin film cold cathode for cross-linking curing to obtain a cured carbon nano tube cold cathode; and enabling the carbon nano tube in the carbon nano tube cold cathode in the curing state to form a tip by utilizing a high-energy ion beam, and enabling the carbon nano tube to form an upright state by utilizing a high-strength electric field to obtain the carbon nano tube cold cathode in an activated state.