43 results about "Ultrasonic standing wave" patented technology

The invention relates to the technical field of preparation of ceramic-based composite materials, and discloses a preparation method of a carbon-ceramic composite material, which comprises the following steps: placing a colloidal suspension containing chopped carbon fibers and ceramic precursor nanoparticles in an ultrasonic standing wave field to directionally arrange a fiber network, synchronously triggering sol-gel transformation to realize in-situ curing of the fiber network, and drying to obtain the carbon-ceramic composite material. And drying and sintering to obtain the composite material. According to the method, zero-stress combination of a fiber-matrix interface is realized in a liquid phase environment through space-time coordination of sound field dynamic arrangement and gel static curing, so that microcracks caused by thermal mismatch in a traditional process are fundamentally avoided; and a direct-current electric field generation trigger mechanism is combined, so that the global consistency of large-size component gelation is ensured, and the material has microstructure programmability and macroscopic performance stability.

The invention relates to a multi-part moxibustion auxiliary nursing device and a method thereof, and belongs to the technical field of modern rehabilitation and daily health care, and the method comprises the following steps: S1, arranging a sound wave agglomeration flow channel and a downstream variable cross-section cyclone separation guide pipe; s2, the driving frequency is corrected along with temperature adjustment, the pipe diameter is made to be integral multiples of the half-wavelength, and it is ensured that standing wave nodes are located in the center of the section; s3, moxa-moxibustion smoke is introduced, and the flow speed is controlled to be 2-4 m / s so that the laminar flow state can be kept; s4, starting 27 to 29 kHz, gt; 140dB ultrasonic standing waves are adopted, and tar is driven by acoustic radiation force until wave nodes are gathered into gt; 10 [mu] m large particles; s5, the airflow tangentially enters an inverted-cone-shaped pipe, large particles are captured through centrifugal force, and medicine volatile oil gas is discharged from the center. According to the method, harmful substances such as polycyclic aromatic hydrocarbon and the like are efficiently removed, meanwhile, monoterpenoids and sesquiterpenoids volatile oil components in the moxa smoke are reserved to the maximum extent, and the medicinal value of moxibustion nursing is ensured.

The application provides a solder ball coating method and device and a semiconductor packaging production line, relates to the field of solder ball surface coating, and is used for solving the problems of mechanical contact, surface damage, pollution introduction, incomplete coating and uneven thickness during solder ball surface coating. The solder ball coating method comprises the following steps: generating an ultrasonic standing wave field; placing a solder ball to be processed at a standing wave node position of the ultrasonic standing wave field, so that the acoustic radiation force generated by the standing wave node position can make the solder ball to be processed suspended in a non-contact state; feeding an organic coating material into the standing wave node position; and making the organic coating material deposited on the surface of the solder ball to be processed to form an organic coating. By constructing the ultrasonic standing wave field, the solder ball to be processed is suspended at the standing wave node by the acoustic radiation force, the organic coating material is coated in the suspended state, the collision friction and impurity pollution are reduced, the coating completeness and uniformity of the solder ball surface are improved, and the subsequent welding reliability and packaging yield are improved.

The invention discloses a method for promoting differentiation of primary neural stem cells based on ultrasonic patterning. Putting the cell slide into a cell culture dish, adding a poly-D-lysine solution to immerse the cell slide, preserving in a dark place at room temperature, completely absorbing the solution, cleaning the slide, and airing for later use; placing the cell culture dish in a sound field generator in an ultrasonic device, and adding sterile water into a gap area; emitting ultrasonic waves by using an ultrasonic device, and adding the cell suspension containing the primary neural stem cells into a cell culture dish; and stopping emitting the ultrasonic waves, transferring the cell culture dish into an incubator for culturing, and then replacing the culture medium for culturing to obtain mature nerve cells. According to the method, the one-dimensional ultrasonic standing wave field is applied in the early stage of the cell culture process to remarkably promote the differentiation rate of in-vitro culture of the neural stem cells, the spatial arrangement of the primary neural stem cells is accurately controlled by adopting a non-contact method, ultrasonic field patterning is realized, damage to the cells is reduced, and operation safety and cell activity are ensured.

The application discloses a micro-nano air floatation solid-liquid separation control method based on scum density monitoring, and relates to the technical field of automatic water treatment control. The method comprises the following steps: obtaining scum layer terahertz scanning data, analyzing free water and bubble distribution to calculate a density index; calibrating the index by using physical viscoelastic parameters measured by an ultrasonic standing wave field; inputting the calibrated index and a feedforward signal into a joint prediction optimization model to solve optimal operation variables; and outputting fluid and residue discharge parameters, which are used for adaptive adjustment of the underlying fluid and phased array acoustic nondestructive residue discharge. The application is used to solve the problems of the traditional optical monitoring, such as the existence of a surface sensing blind area, the lack of physical confidence in pure data state evaluation, and the easy breaking of flocs and secondary backmixing caused by mechanical residue discharge.

The application belongs to the technical field of new energy battery materials, and discloses a composite solid electrolyte and a preparation method and system thereof. The preparation method comprises the following steps: under an inert atmosphere, a pretreated sulfide solid electrolyte and a pretreated halide solid electrolyte are put into a cavity; under the action of an ultrasonic standing wave, the sulfide solid electrolyte is suspended, and the halide solid electrolyte is dispersed; a gradient electric field in the vertical direction is formed through upper and lower electrode plates in the cavity, so that the halide solid electrolyte is coated on the sulfide solid electrolyte, and the composite solid electrolyte is obtained. The method provided in the application realizes uniform coating of LIC on LPSC, the coating layer is uniform, the interface is firmly combined, the interface stability and the oxidation resistance of LPSC are effectively improved, and the ionic conductivity of LIC and LPSC is retained.

The invention relates to the technical field of chemical engineering and equipment, and discloses a continuous feeding reaction device for lignin photodegradation, which comprises a reaction tube, an LED light source array and a transducer arranged outside the reaction tube, and a rotating shaft arranged inside the reaction tube and driven by a rotation driving mechanism. A composite scraping mechanism is mounted on the rotating shaft and is used for forcibly scraping reaction liquid on the inner wall of the reaction tube to form a thin film. The transducer is used for generating an ultrasonic standing wave field to drive photocatalyst particles to form a high-density array; the LED light source array works in a pulse mode, and the triggering time of light pulses of the LED light source array is matched with the time when the density of the catalyst array reaches a peak value. Through the synergistic effect of dynamic film scraping self-cleaning, the sound field tissue catalyst and pulsed light synchronous irradiation, the problems of light shielding, easy blockage and slow mass transfer in a high-viscosity dark multiphase system are solved, and the reaction efficiency and stability are improved.

The invention belongs to the technical field of spacecraft ground test equipment, and particularly relates to a microgravity simulation device for spacecraft component ground test, which comprises a base, an air floatation support mechanism, an ultrasonic standing wave stabilization mechanism, a self-adaptive clamping mechanism, a servo drive error compensation mechanism, a control system and a test platform. The air floatation supporting mechanism provides vertical non-contact supporting force to offset gravity, the ultrasonic stabilizing mechanism maintains horizontal stability, the self-adaptive clamping mechanism is adaptive to parts of multiple sizes, and the servo compensation mechanism corrects deviation in real time. The composite suspension structure is combined with PID-fuzzy closed-loop control, the simulation error is controlled within 4.0%, the defects that existing equipment is low in precision, short in time, prone to pollution and poor in universality are overcome, long-time stable simulation can be achieved, and reliable support is provided for part ground verification.

The invention provides a preparation method of a block nano material based on continuous solid-liquid interface conversion, which comprises the following steps: A) simultaneously regulating and controlling a solid-liquid interface energy barrier of a solid-liquid conversion medium on the surface of a target area through a dynamic magnetic field and an ultrasonic standing wave to obtain a metastable state interface; the solid-liquid conversion medium is a magnetic nanofluid with a core-shell structure; and B) performing interface reaction on the metastable state interface and elements on the surface of the target area to generate a submicron intermetallic compound strengthening phase, thereby obtaining the block nano material. The preparation method provided by the invention is high in structural degree of freedom, supports direct forming on the surface of a curved surface / hollow structure, and can break through the plane limitation of a copper indium needle array. Moreover, zero pollution of an interface can be realized, the magnetic fluid is completely recovered, and the residual quantity is 1t; and 0.1%. Furthermore, the process temperature is reduced to 180 DEG C through ultrasonic-assisted diffusion, and energy consumption can be remarkably reduced and is reduced by 40% compared with the prior art.

The invention discloses a cell culture method for inhibiting cell migration based on ultrasonic waves. The method comprises the following steps: putting a cell glass slide into a cell culture dish, adding a PDL solution, completely absorbing the PDL solution, cleaning, airing for later use, putting the cell culture dish into an ultrasonic device, emitting ultrasonic waves by using the ultrasonic device to enable the ultrasonic waves to form a standing wave field for inhibiting cell migration in the cell culture dish, preparing a starvation culture medium, and culturing the starvation culture medium in the cell culture dish. And suspending the cells in a prepared starvation culture medium to obtain a cell suspension, then adding the cell suspension into a cell culture dish, removing an external ultrasonic sound field after a period of time, and transferring the cell culture dish into a carbon dioxide cell culture box for standing culture. According to the method, the one-dimensional ultrasonic standing wave field is applied in the early stage of the cell culture process, so that cell migration is effectively inhibited, cell arrangement is accurately controlled by adopting a non-contact method, damage to cells is reduced, and operation safety and cell activity are ensured.

The present invention relates to the technical field of ceramic-based composite material preparation, and discloses a method for preparing a carbon-ceramic composite material. The method comprises placing a colloidal suspension containing chopped carbon fibers and ceramic precursor nanoparticles in an ultrasonic standing wave field to orient the fiber network, synchronously triggering a sol-gel transition to achieve in-situ solidification of the fiber network, and then drying and sintering the composite material. This method achieves zero-stress bonding at the fiber-matrix interface in a liquid environment through the spatiotemporal synergy of dynamic acoustic field alignment and static gel solidification, fundamentally avoiding the microcracks caused by thermal mismatch in traditional processes. Combined with an endogenous triggering mechanism of a direct current electric field, this method ensures global consistency in the gelation of large-scale components, resulting in a material that combines both microstructural programmability and macroscopic performance stability.

This invention discloses a method for unsteady-state ultrasonic standing wave-assisted control of fusion welding. It utilizes dual ultrasonic transducers to perform dual-wave interference, forming an ultrasonic standing wave. This ultrasonic standing wave is introduced into the fusion welding process, and its action on the welding area allows for real-time control of the microstructure and properties of different parts of the weld joint. This forms a unsteady-state ultrasonic standing wave with controlled directional movement of the wave packet nodes, which is then used to regulate the microstructure and properties of the weld joint. This invention enables control over the direction and speed of movement of the unsteady-state ultrasonic standing wave wave packet nodes, allowing for regional control of the microstructure and properties of different parts of the weld joint, resulting in a more uniform joint composition and microstructure. It can solve problems such as undercut, burn-through, high residual stress, severe deformation, and columnar crystals that reduce joint performance during the welding of thin materials or fine wires, refining grains and improving joint performance. It can achieve controllable connections from the centimeter scale to the micrometer scale.

The present invention relates to a downhole particle collection device based on ultrasonic standing waves, which includes a central controller, a terminal server, a detection device, and a mobile device. The central controller is connected to the terminal server. The detection device includes an environmental acquisition and analysis module and a safety monitoring and analysis module. The beneficial effects of the present invention are as follows: Certain guide rails are laid in the shaft, and a plurality of mobile devices are arranged on the guide rails. An acoustic motor is movably connected inside the mobile device. The acoustic motor emits standing waves through an acoustic wave emitter. The standing waves have good manipulability for tiny particles, causing the suspended particles to undergo migration movement, making the dust removal more thorough and directional. A wave source generator is arranged in the roadway, and the vibration of the wave causes the particles to concentrate at the antinode position. A central air-conditioning exhaust is set up to form a duct standing wave exhaust system, making up for the defects of the existing roadway dust removal technology, eliminating potential safety hazards, and the movable mobile device conducts cyclic patrols with a large detection coverage area.

The invention provides an ultrasonic vertical net filter, and belongs to the technical field of slurry filtration. Comprising a feeding shell, a discharging shell, a filtering assembly, an ultrasonic vibrator and a first damping pad, the sides, close to each other, of the feeding shell and the discharging shell are fixedly connected with a left flange plate and a right flange plate respectively, the left flange plate and the right flange plate are fixedly connected through a plurality of screws, and fixing grooves are formed in the inner rings of the sides, close to each other, of the left flange plate and the right flange plate. The filtering assembly is vertically installed in the feeding shell and the discharging shell to filter slurry, due to the fact that a filtering net of the filtering assembly does not directly bear the gravity effect, the filtering net is prevented from being crushed, the service life is prolonged, in the filtering process of the filtering assembly, an ultrasonic vibrator enables the filtering assembly to vibrate, and the filtering effect is improved. And the grinding balls accumulated on the filter screen are deposited at the bottom and finally discharged from the slag discharge pipe, so that the filter screen does not need to be frequently cleaned and replaced, and the filtering efficiency is greatly improved.

The invention discloses a wide-temperature-range shape memory high-resilience hot melt film preparation system, and relates to the technical field of hot melt film preparation, the wide-temperature-range shape memory high-resilience hot melt film preparation system comprises a melting plasticizing unit and a winding unit, and further comprises an ultrasonic standing wave molecular chain dynamic interlocking extrusion module, a piezoelectric ceramic array stress coding calendering module and a photo-thermal response interlocking module which are sequentially connected in series; according to the invention, ultrasonic standing wave molecular chain dynamic interlocking, piezoelectric ceramic array gradient stress coding, photo-thermal response interlocking type and real-time feedback closed loop technologies are utilized to solve the problems that the existing system depends on a multi-component formula and later training, and temperature range and bidirectional memory splitting and resilience and fatigue resistance cannot be achieved at the same time; continuous precise response and bidirectional reversible memory circulation of the membrane material in the whole temperature range of-50 DEG C to 150 DEG C are achieved, the membrane material has excellent high resilience and fatigue resistance, batch consistency and stability are improved, the membrane material can flexibly adapt to multi-scene requirements, and production efficiency is remarkably improved.

The application provides an atomization device, an atomization method and application, and belongs to the technical field of atomization. The application comprises a sound vortex generation system for generating a vortex ultrasonic field; and a liquid supply system for conveying an atomization medium into the vortex ultrasonic field. The sound vortex generation system is used to generate a vortex ultrasonic field, and the vortex ultrasonic field has both the atomization capacity of an ultrasonic standing wave field and the atomization capacity of centrifugal atomization, so that the atomization medium can be atomized. The application has a wide application prospect in the fields of ordinary liquid atomization and metal powder production.

The present application belongs to the technical field of synthetic ammonia production, and particularly relates to an environmentally-friendly synthetic ammonia production process. The present application adopts 6.5MPa aerospace furnace semi-waste pot gasification technology, cooperates with CaO-Fe2O3-K2CO3 composite combustion improver and optimizes oxygen-coal ratio to realize efficiency increase from the source, adopts isothermal shift system to realize accurate conversion of CO, adopts activated carbon-molecular sieve composite adsorbent in four-tower PSA system, and realizes deep purification in combination with cryogenic separation. In the ammonia synthesis link, a carbon nanotube loaded ruthenium-based catalyst is taken as the core, the carbon nanotube is subjected to plasma treatment to form a defect site, the ultrasonic standing wave is used to drive accurate loading of ruthenium ions, supercritical CO2 reduction is used to control the size of ruthenium particles, nitrogen-doped carbon shell is combined with K + Limited enhancement of electron transfer significantly improves the catalytic activity of the catalyst, and the hydrogen-nitrogen ratio is optimized in combination with green hydrogen, thereby effectively improving the single-pass conversion rate and the yield of the product.

This application relates to the field of mass spectrometry analysis and detection technology, and in particular to a detection method for enhancing ion recognition, comprising the following steps: Step 1, placing an ultrasonic standing wave device within an ion source, the ultrasonic standing wave device including at least two oppositely arranged acoustic transducer units for emitting sound waves of the same frequency and opposite propagation directions to superimpose and form an ultrasonic standing wave field, and also including a triaxial adjustment mechanism; Step 2, the two acoustic transducer units extending into the ion source cavity and located on both sides of the nozzle, adjusting the position of the acoustic transducer units using the triaxial adjustment mechanism so that the acoustic transducer units are close to the rear of the nozzle, and the center height of the acoustic transducer units is lower than the tip of the nozzle; Step 3, adjusting the spacing between the two acoustic transducer units; Step 4, aligning the standing wave node axially with the entrance of the mass spectrometer detector. This method can enhance the focusing of sample ions, thereby improving the ion recognition effect of the mass spectrometer detector, without changing the internal structure of the ion source.

This invention discloses an apparatus and method for ultrasonic standing wave stripping of a cathode coating. The inner walls of both sides of the gantry frame are fixed to the Y-axis moving plates of two Y-axis motion mechanisms. Z-axis motion mechanisms are provided on both sides of the gantry frame, and two symmetrical support blocks in each of the two Z-axis motion mechanisms are fixed to the ends of two support plates in an X-axis motion mechanism. A vibration head fixing plate is fixed to the worktable of each X-axis motion mechanism. Multiple ultrasonic vibration modules are provided on the vibration head fixing plate, and the transducers in the ultrasonic vibration modules are connected to an ultrasonic generator via cables. The suction nozzle outlet fixed to the vibration head fixing plate is connected to the suction end of an industrial vacuum cleaner via a corrugated pipe. This invention uses standing wave vibration to induce tearing within the cathode coating, achieving the purpose of stripping the cathode coating while avoiding the generation of splatter, reducing damage to the cathode plate, and improving the reusability of the cathode plate.

The application discloses a cell culture method based on ultrasonic wave for inhibiting cell migration. The method comprises the following steps: placing a cell climbing sheet into a cell culture dish, adding a PDL solution, cleaning and air-drying the cell climbing sheet after the PDL solution is absorbed, placing the cell culture dish into an ultrasonic device, emitting ultrasonic waves by the ultrasonic device, forming a standing wave field in the cell culture dish for inhibiting cell migration, preparing a starvation medium, suspending cells in the prepared starvation medium to obtain a cell suspension, adding the cell suspension into the cell culture dish, removing the external ultrasonic wave field after a period of time, and transferring the cell culture dish into a carbon dioxide cell culture box for static culture. By applying a one-dimensional ultrasonic standing wave field in the early stage of the cell culture process, the application effectively inhibits cell migration, accurately controls cell arrangement by a non-contact method, reduces damage to the cells, and ensures the safety of the operation and the activity of the cells.

The invention relates to a liquid elastic modulus measuring system and method based on an ultrasonic grating Moire effect, and aims to solve the problems of non-visual physical phenomenon, poor teaching demonstration effect and the like in an existing liquid elastic modulus measuring experiment. Comprising a plane light source, an ultrasonic field system, a plano-concave lens, a known grating assembly, an angle sliding table, a ground glass screen and an industrial camera, and the ultrasonic field system excites ultrasonic standing waves in a water tank to form an ultrasonic grating; the plano-concave lens is used for amplifying ultrasonic grating constants so that the ultrasonic grating constants can be overlapped with known gratings which are arranged on the light emitting side of the plano-concave lens and are adjusted through the angle sliding table and accurately positioned, clear moire fringes are generated, fringe images are collected through the industrial camera, moire fringe intervals are measured through calibration, and the elastic modulus of the liquid is calculated by combining the liquid sound velocity and density. According to the invention, micron-scale ultrasonic grating constant measurement is converted into centimeter-scale moire fringe interval measurement, so that the measurement precision and the experiment intuition are effectively improved, and the method has popularization value in physical experiment teaching.

The invention belongs to the technical field of synthetic ammonia production, and particularly relates to an environment-friendly synthetic ammonia production process. A 6.5 MPa spaceflight furnace semi-waste boiler gasification technology is adopted, a CaO-Fe2O3-K2CO3 composite combustion improver is matched, the oxygen-coal ratio is optimized, synergy is achieved from the source, accurate CO conversion is achieved through an isothermal transformation system, an activated carbon-molecular sieve composite adsorbent is adopted in a four-tower PSA system, and deep purification is achieved in combination with cryogenic separation. In an ammonia synthesis link, a carbon nanotube loaded ruthenium-based catalyst is taken as a core, a carbon nanotube is subjected to plasma treatment to form a defect site, ultrasonic standing waves drive ruthenium ions to be accurately loaded, supercritical CO2 is reduced to control the size of ruthenium particles, a nitrogen-doped carbon shell and K < + > confinement enhance electron transfer, the catalytic activity of the catalyst is remarkably improved, and the hydrogen-nitrogen ratio is optimized in combination with green hydrogen, so that the catalytic activity of the catalyst is improved. The conversion per pass is effectively improved, and the yield of the product is improved.

The present application relates to cable processing technical field, specifically, it relates to the cable processing technology for easy heat dissipation high-power energy storage power station. It includes the following steps: the oxygen-free copper pole is made into the conductor core; the boron nitride is treated by surface amido functionalization, then the aminated boron nitride is mixed with phosphorus hetero triazine compound to form covalent hybrid; the hybrid is mixed with other raw materials to prepare the master batch, then the master batch is used as the additive to obtain the insulating layer; the surface of the insulating layer is continuously coated to complete the preparation of the cable. In the present application, the conductor interface air gap is eliminated and the electric field is homogenized by the inner shielding layer, the thermal stress is buffered by the transition layer, the hybrid axial orientation is realized under the induction of ultrasonic standing wave field, and the phosphorus hetero group is activated to form carbon by step-by-step radiation crosslinking, the insulation and flame retardant properties are simultaneously strengthened; finally, the longitudinal heat conduction is enhanced by the copper shielding layer dendritic micro channel, the heat dissipation area is expanded by the corrugated aluminum sheath, so that the interface thermal resistance of the cable is reduced and the heat dissipation performance of the cable is improved.

The invention discloses a battery pack aerosol fire extinguishing permeation system based on sound wave resonance standing waves, which is provided with a standing wave chamber, a plurality of ultrasonic transducers are uniformly distributed on the outer wall of an energy-gathering paraboloid of the standing wave chamber, electric energy is converted into sound energy through the ultrasonic transducers, a standing wave field is formed, and the sound wave resonance standing waves are formed. The focus of the energy-gathering paraboloid is located between the surface of the energy-gathering paraboloid and the outlet, so that acoustic radiation force in the direction of the outlet can be formed, aerosol is driven to directionally accelerate towards the outlet, finally, the aerosol is sprayed outwards from the outlet, and directional driving of an ultrasonic standing wave field is achieved. According to the invention, the change from passive diffusion to active acoustic migration is realized through directional driving of an ultrasonic standing wave field, so that the response time is shortened, and aerosol can quickly reach a fire source.

The utility model discloses a drug delivery experiment device for an ultrasonic drug permeation instrument, which comprises an experiment environment building unit, a drug delivery experiment unit and a drug delivery experiment unit, the ultrasonic unit is arranged in the liquid environment in the experimental environment building unit, the ultrasonic unit comprises a first ultrasonic transducer and a second ultrasonic transducer which are oppositely arranged, and an ultrasonic standing wave field is formed between the first ultrasonic transducer and the second ultrasonic transducer; the medicine conveying unit is used for conveying medicine particles into the ultrasonic standing wave field; the recording unit is used for recording the number of the drug particles captured by the ultrasonic standing wave field. The liquid environment is arranged, and the ultrasonic unit and the medicine conveying unit are arranged in the liquid environment, so that the capturing conditions of different medicine particles by different ultrasonic powers can be effectively experimented, the influence of different ultrasonic powers on the movement of different medicine particles can be verified, and power data support is provided for the ultrasonic medicine penetration instrument; and the leading-in effect of the ultrasonic medicine penetration instrument is greatly enhanced, so that the treatment effect is improved.

The invention relates to the field of power system high-voltage insulation and intelligent sensing monitoring, in particular to an insulating oil multi-parameter rapid synchronous detection device and method, and the device comprises a fluid driving unit, an acoustoelectric layering test pipeline, a breakdown test unit and a self-healing damping valve. According to the system, through the synergistic effect of an ultrasonic standing wave field and dielectrophoretic force, a virtual layered structure of central rich gas core flow-peripheral pure circulation flow is constructed in a pipeline; the core of the device is that a hollow breathable fiber membrane tube is used for degassing analysis, and meanwhile, a peripheral shielding electrode is used for measuring the dielectric loss of oil without bubble interference; according to the invention, the hydrodynamic contradiction between a strong disturbance fluid environment required by oil-gas separation and an undisturbed steady-state laminar flow environment required by dielectric loss measurement is solved, and rapid and synchronous detection of multiple parameters of the insulating oil is realized.

This invention discloses an airflow spinning method for nanoparticle-reinforced magnesium oxide fibers. The method employs a synergistic process of "airflow drawing + in-situ electrostatic loading of nanoparticles": First, the nanoparticles undergo surface chemical modification and ultrasonic standing wave pre-dispersion; then, the modified particles are transported to a corona discharge chamber via a carrier gas, where a high-voltage power supply applies a charge to the nanoparticles while simultaneously applying an opposite charge to the spinning solution; using the carrier gas flow as the sole drawing force, the fiber jet captures the charged nanoparticles in a directional manner through Coulomb attraction during formation, achieving uniform and robust in-situ loading; finally, drying and segmented heat treatment yield nanoparticle-reinforced magnesium oxide fibers. The resulting fibers exhibit significantly improved toughness, strength, and thermal shock resistance. This invention features a continuous, low-cost, and environmentally friendly process, and the products are suitable for applications such as ultra-high temperature insulation, aerospace, high-temperature flue gas purification, and antibacterial protection.

The invention belongs to the technical field of high-pressure pneumatic valves, and discloses a constant-volume pneumatic valve capable of quickly responding under the high-pressure working condition and a control method thereof, polyimide-based dielectric sensing arrays on the inner wall of a constant-volume cavity are designed in a leadless mode, the high-pressure sealing risk is avoided, and pressure and density can be reversely pushed in real time; the ultrasonic standing wave sensor at the inlet synchronously collects flow velocity and temperature and identifies shock waves; in cooperation with a flow field-structure coupling interference suppression algorithm, resonance and eddy current distortion are eliminated; by means of the design, the parameter sensing response speed is higher, and the data precision meets the follow-up volume calculation and drive matching requirements; calculating a target volume by using the pressure and temperature after purification in the step S2 and combining a gas equation of a corrected compression factor; the SMA spring set achieves coarse volume adjustment through the temperature of high-pressure gas, the piezoelectric ceramic tube on the inner side is rapidly and finely adjusted based on real-time data, the fluid self-feedback driving cavity provides thrust linearly associated with inlet pressure, and the composite actuator is combined with lever amplification to achieve rapid driving of the valve clack.

The invention relates to the technical field of cable processing, in particular to a processing technology of a cable for a high-power energy storage power station easy to dissipate heat. The method comprises the following steps: manufacturing an oxygen-free copper rod into a conductor core; the preparation method comprises the following steps: carrying out surface amino functionalization treatment on boron nitride, and mixing aminated boron nitride with a phosphaphenanthrene triazine compound to form a covalent hybrid; mixing the hybrid with other raw materials to obtain master batch, and then taking the master batch as an additive to obtain an insulating layer; and continuously coating the surface of the insulating layer to finish the preparation of the cable. According to the invention, conductor interface air gaps are eliminated and an electric field is homogenized through the inner shielding layer, thermal stress is buffered through the transition layer, hybrid axial orientation of the main insulating layer is realized under the induction of an ultrasonic standing wave field, phosphaphenanthrene groups are activated through stepwise radiation crosslinking to catalyze char formation, and the insulation and flame retardant properties are synchronously enhanced; finally, longitudinal heat conduction is enhanced through the tree-shaped micro-channels of the copper shielding layer, and the heat dissipation area is enlarged through the corrugated aluminum sheath, so that the interface thermal resistance of the cable is reduced, and the heat dissipation performance of the cable is improved.

The invention discloses a micro-nano sheet structure welding device and method based on laser melting and ultrasonic regulation and control, and belongs to the technical field of micro-nano material processing and manufacturing. The problems that in the liquid phase preparation and reconstruction process, micro-nano particles are driven by the minimum interface energy to naturally tend to be spherical, and isolated spherical particles are difficult to spontaneously assemble into a sheet structure under the template-free condition are solved. The underwater acoustic transducer device specifically comprises a laser assembly, an underwater acoustic transducer device assembly and a reaction container assembly. A micro-nano particle solution is contained in the reaction container assembly; a laser assembly is arranged above the reaction container assembly, the laser assembly emits pulse laser into the reaction container assembly, and the micro-nano particles enter a molten state after absorbing the pulse laser. The underwater acoustic transducer device assembly generates an ultrasonic standing wave field, and the ultrasonic standing wave field provides stable acoustic radiation force distribution to enable the liquid micro-nano particles to evolve towards the direction of the sheet structure to form the directionally arranged sheet structure, so that controllable control of the form of the micro-nano material is realized.