294 results about "Joule heating" patented technology

The invention provides roll-to-roll continuous Joule heating equipment. The roll-to-roll continuous Joule heating equipment comprises a heating box, the base material releasing assembly is arranged at one end in the heating box; coating a protective cover; the coating assembly is mounted in the coating protective cover and comprises a coating guide roller set, a liquid guide inclined plate is arranged at a coating gap of the coating guide roller set, a swing driving part is mounted at the inner end of the top of the liquid guide inclined plate, a clamping part is mounted at the outer end of the top of the liquid guide inclined plate, and a storage part is mounted on the outer side of the liquid guide inclined plate; a plurality of groups of separators which are matched and butted with the clamping components are stored in the storage component; a liquid discharge gap is reserved between the storage part and the liquid guide inclined plate; a liquid receiving assembly; a liquid guide assembly; a Joule heating assembly; a spraying assembly; and a base material winding assembly. According to the invention, Joule heat is utilized to quickly dry the coating layer, so that continuous operation of releasing the base material, coating / spraying, heating and drying, and rolling is realized, the continuity of the heating process can be realized, and the experiment or production efficiency is greatly improved.

The object of the present disclosure is to provide a piezoelectric device and the like capable of suppressing temperature unevenness in a piezoelectric layer during polarization of the piezoelectric device. A piezoelectric device having a capacitor structure in which a first electrode layer having two first electrode terminals, a piezoelectric layer, and a second electrode layer are laminated in this order, wherein the first electrode layer is Joule-heated by a potential difference between the two first electrode terminals, and the piezoelectric layer is polarized by an electric field generated by a potential difference between the first electrode layer and the second electrode layer while being heated by the Joule-heated first electrode layer.

The invention discloses an electric pulse and salt crystallization synergetic coal seam anti-reflection system and method, and the system comprises a salt solution preparation tank which is internally provided with a Na2SO4 saturated solution; one ends of the first high-pressure water injection pump and the second high-pressure water injection pump are respectively communicated with the salt solution preparation tank, and the other ends of the first high-pressure water injection pump and the second high-pressure water injection pump are respectively communicated with the negative electrode drill hole and the positive electrode drill hole through a first pipeline and a second pipeline; the positive electrode end of the electric pulse generating device is connected with a positive electrode, the positive electrode is arranged in the positive electrode drill hole, the negative electrode end of the electric pulse generating device is connected with a negative electrode, the negative electrode is arranged in the negative electrode drill hole, and the electric pulse generating device is configured to generate a large number of microfractures in the coal body by utilizing the electrogenerated shock wave and the Joule heating effect and drive the Na2SO4 saturated solution to diffuse towards the deep parts of the fractures; and the first cooling jet device and the second cooling jet device are respectively communicated with the negative electrode drill hole and the positive electrode drill hole and are configured to respectively inject a low-temperature medium into the negative electrode drill hole and the positive electrode drill hole.

Ultrafast flash evaporation joule heating synthesis methods and systems, more particularly, ultrafast synthesis methods for recovering metals from ores, fly ash, and bauxite residue (red mud).

The invention provides a preparation method of a Joule heat-assisted super-wetting metal net, a metal net with super-hydrophilic performance and a metal net with super-hydrophobic performance. According to the material, carbon nanotubes are firmly adhered to the surface of a metal net through polydopamine mediation to construct a micro-nano coarse structure, a hydrophobic alkyl compound is grafted through a sulfenyl three-component coupling reaction to reduce surface energy, and a super-hydrophilic / underwater super-oleophobic metal net and a super-hydrophobic metal net are prepared respectively. The Joule heating effect of the material is remarkably enhanced by introducing the carbon nanotubes, so that the temperature of the material can be rapidly increased to 100 DEG C or above within 20 seconds under the ultralow voltage of 2.0 V. The characteristic can be effectively used for in-situ heating viscosity reduction of high-viscosity crude oil, continuous and efficient oil-water separation is achieved in a double-channel separation device, the crude oil flux reaches up to about 3985 L.m <-2 >. H <-1 >, and the separation efficiency exceeds 98.6%. The method is also suitable for stainless steel meshes with micron-sized apertures, and can realize efficient separation of various crude oil emulsions.

The invention belongs to the technical field of pyrometallurgy and hydrometallurgy, and discloses an efficient leaching method for Joule thermal shock strengthened vanadium titano-magnetite. The Joule thermal shock strengthened vanadium-titanium resource efficient leaching comprises the steps that low-grade vanadium-titanium magnetite ore powder and a carbon source are mixed and then subjected to Joule thermal shock activation treatment, and an obtained activation product is leached through dilute acid or organic acid, so that valuable metal such as vanadium, titanium and iron can be efficiently leached out. Vanadium titano-magnetite and a small amount of carbon powder are subjected to Joule thermal shock, so that the valence state of metal ions is reduced, and the leaching activity of metal is improved. The Joule thermal shock strengthening low-grade vanadium titano-magnetite acid leaching method has the advantages of being high in activation efficiency, high in metal element leaching efficiency and the like.

The technology described herein is directed towards a reconfigurable intelligent surface (RIS) based on microelectromechanical systems (MEMS) technology, in which metallic MEMS micro-actuators are integrated into unit cells of the RIS. Dual ring-shaped metallic cantilevers, resulting from unit cell fabrication, operate as electrothermal actuators in the unit cell's resonating pattern. A controlled voltage can be separately applied to each ring-shaped cantilever, deforming (bending up) each ring at its non-anchored (free) portion from its generally flat non-actuated state via joule heating. The amount of vertical displacement of the free portion of each ring when voltage is applied separately changes the structure of the unit cell's geometry based on each amount of applied voltage, whereby analog-like tuning of the unit cell's characteristics (including phase shift) is obtained. When combined with the voltage-controlled phase shifts of other unit cells of the RIS, beamforming of a reflected incoming electromagnetic wave is facilitated.

The invention discloses a method for preparing a tungsten trioxide low-platinum electrocatalyst with a core-shell structure through pulse Joule heating, and belongs to the field of electrochemical catalysts for electrolysis of water. The invention aims to solve the problems that controllable amorphization is difficult to realize on the WO3 surface and a crystal nucleus-amorphous shell composite structure cannot be effectively constructed in the prior art. The preparation method comprises the following steps: 1, preparing a tungsten trioxide carrier with a core-shell structure; and 2, loading a platinum source. The method is used for preparing the tungsten trioxide low-platinum electrocatalyst with the core-shell structure through pulse Joule heating.

This invention discloses a core-shell structured lithium-rich manganese-based cathode material with the general formula Li. 1+a Mn x Co y Ni z O 2‑b‑d (XO c ) b X d It has a core-shell structure, with the core being a disordered polyanion-doped lithium-rich manganese-based material, Li. 1+a Mn x Co y Ni z O 2‑b (XO c ) b The outer shell is made of lithium-rich manganese-based material Li, which is doped with gradient non-metallic ions. 1+ a Mn x Co y Ni z O 2‑d X d This application also provides a method for preparing a core-shell structured lithium-rich manganese-based cathode material. The method employs a combination of rapid Joule heating and surface plasma cleaning to prepare the aforementioned core-shell structured lithium-rich manganese-based cathode material, achieving a bulk disordered structure design with polyanion doping and a core-shell structure with surface gradient non-metallic ion doping. Specifically, the bulk polyanions can immobilize transition metal elements to suppress their migration to the lithium layer, reducing harmful consumption of active sites and stabilizing the crystal structure. Furthermore, the strong bond energy between the surface non-metallic elements and the transition metal elements can suppress transition metal dissolution during cycling, reducing irreversible oxygen oxidation and inhibiting harmful phase transitions.

The invention discloses an alginate-based high-entropy metal oxide as well as a preparation method and application thereof, and belongs to the technical field of gas sensor materials. The preparation method comprises the following steps: mixing a high-entropy metal salt solution of at least five metal sources with an alginate solution to prepare alginate-based high-entropy metal aerogel, and then wrapping the alginate-based high-entropy metal aerogel with carbon cloth and rapidly heating the alginate-based high-entropy metal aerogel by using a Joule thermal method to obtain the nanosheet-shaped alginate-based high-entropy metal oxide. The material can be used for high-sensitivity detection of ethanol gas. The preparation method provided by the invention is green, simple and rapid, has a good sensing response effect in ethanol gas detection, and the sensing material has good stability, can be recycled for multiple times, and has a good application prospect.

The technology described herein is directed towards a reconfigurable intelligent surface (RIS) based on microelectromechanical systems (MEMS) technology, in which MEMS micro-actuators are integrated into unit cells of the RIS. A ring-shaped cantilever, resulting from unit cell fabrication, operates as an electrothermal actuator in the unit cell's resonating pattern. A controlled voltage is applied to the ring-shaped cantilever, deforming (bending up) the metal (e.g., aluminum) ring at its non-anchored (free) portion from its relatively straight non-actuated state via joule heating. The amount of vertical displacement of the free portion of the ring when voltage is applied changes the structure of the unit cell's geometry based on the amount of voltage, whereby analog-like tuning of the unit cell's characteristics (including phase shift) is obtained. When combined with the voltage-controlled phase shifts of other unit cells of the RIS, beamforming of a reflected incoming electromagnetic wave is achieved.

The invention relates to the technical field of thermal control of spacecrafts, and discloses a satellite battery phase change thermal control system based on Joule thermal effect and high-orientation heat conduction framework cooperative regulation, and the system is characterized in that a resistance heating unit, a high-orientation graphene heat conduction framework and a composite phase change material are tightly coupled; and bidirectional temperature adjustment of the spaceflight lithium ion battery in an extreme temperature environment is realized. When the battery needs to be heated at low temperature, the resistance wire is electrified to generate heat, the heat is quickly and uniformly diffused by virtue of ultrahigh thermal conductivity in the oriented graphene film surface, and a heating network is constructed; when heat dissipation is needed at high temperature, the composite phase change material absorbs heat and stores energy through solid-liquid phase change, and the high-orientation heat conduction framework guides heat to be directionally conducted to the water cooling plates on the two sides, so that a heat dissipation channel is formed. By means of the synergistic effect of electric-heat conversion and directional heat conduction, rapid uniform-temperature heating and directional dredging heat dissipation of the battery are achieved, the problem that a traditional aviation lithium battery is low in heat management efficiency is solved, and the temperature adaptability and working stability of a battery system are improved.

The invention discloses a method for preparing a carbon-coated cobalt-cerium composite material by using rapid Joule heat, and belongs to the technical field of catalytic materials and hydrogen production by electrolyzing water. The method comprises the following steps: dissolving a cobalt source and a cerium source in a solvent to obtain a mixed metal salt precursor solution, and then uniformly dipping or dropwise adding the mixed metal salt precursor solution onto a cellulose-based porous carbon source precursor to obtain a supported precursor; and finally, placing the load type precursor at two ends of an electrode of a Joule thermal reaction device, and under a vacuum condition, applying instantaneous current to carry out Joule thermal shock treatment so as to prepare the CoCe-C composite material. The preparation process is extremely simple, the energy consumption is extremely low, expensive precious metal and complex equipment are not needed, the obtained CoCe-C material serves as an anode catalyst to be applied to a hydrazine oxidation auxiliary water electrolysis system, the excellent catalytic activity and stability are shown, the voltage of an electrolytic bath can be remarkably reduced, low-energy-consumption, efficient and safe hydrogen production is achieved, and the method is suitable for industrial production. Wide industrial application prospects are realized.

The invention provides a body catalytic reactor based on Joule heating, a reverse water gas shift reaction method and application. The body catalytic reactor comprises a reaction kettle for placing a solid catalyst for endothermic gas-solid multiphase reaction and a closed circuit for heating the solid catalyst based on Joule. According to the technical scheme, the solid catalyst (active substance) with reaction catalytic activity is directly used as a heat supply source of the reaction, and the solid catalyst generates Joule heat by adopting an electric heating mode, so that the solid catalyst can be used as the catalyst and the heat supply source at the same time; a real heat transfer process from inside to outside of the solid catalyst is realized, energy is concentrated on the solid catalyst, and the energy utilization efficiency is extremely high.

The invention discloses a high-performance ceramic ultra-fast degreasing and sintering method based on photocuring additive manufacturing, and relates to the technical field of photocuring additive manufacturing. The method comprises the following steps: preparing a monomer containing chemical functional groups for photo-crosslinking reaction and thermal crosslinking reaction or high polymer photo-cured ceramic slurry with high solid phase content; carrying out photocuring molding to obtain a printing green body; and the printing green body is subjected to ultra-fast degreasing and ultra-fast high-temperature sintering through ultra-fast high-temperature sintering equipment based on Joule heating. According to the invention, a monomer or high polymer system with photo-crosslinking and thermal crosslinking dual-mechanism reactions is introduced, and a polymer network skeleton with high strength and high decomposition rate is constructed in a printing green body. According to the slurry system, the green body can bear an extremely high temperature rise rate without cracking, deformation or bubbling in Joule heating ultra-fast high-temperature sintering equipment, so that organic matters are quickly and thoroughly removed, and the degreasing efficiency and reliability are remarkably improved.

The invention discloses a power supply design method for a carbon nanotube film electric heating curing composite shell, and relates to the technical field of forming and manufacturing. The method comprises the steps that a correlation model based on the law of conservation of energy is established, output parameters of a power supply are calculated through the correlation model, and the correlation model integrates the energy balance relation of the Joule heat effect, the heat convection loss and the heat radiation loss of the carbon nanotube film, the energy balance relation is that the increase of the internal energy per unit volume of the composite material is equal to the difference between the electric energy input by the carbon nanotube film and the energy loss of heat convection and heat radiation. And based on the correlation model, determining the theoretical range of the power supply output power and voltage meeting the requirements of the curing system, and according to the theoretical range, selecting the adaptive power supply specification to realize the accurate control of the heating rate and the highest heating temperature of the composite material. Quantitative calculation of the power supply power is realized through the correlation model based on the law of conservation of energy, the problem of insufficient theoretical basis in a traditional method is solved, and the design efficiency and precision are remarkably improved.

The application discloses a degradable rosin-based epoxy foam and a preparation method and application thereof, and belongs to the technical field of shielding materials, and comprises the following steps: stirring and uniformly mixing propylenediamine-based latent foaming agent, propylenediamine, propylene abietic acid glycidyl ester and 1,3-bis(3-glycidyloxypropyl)-1,1,3,3-tetramethyldisiloxane, and obtaining the degradable rosin-based epoxy foam through reaction.The foaming agent used in the application is rapidly decomposed under heating conditions to release carbon dioxide and the curing agent propylenediamine, and the preparation is simple, environment-friendly and residue-free; the prepared epoxy foam is easy to degrade, excellent in electromagnetic shielding and joule heating performance, and has a wide application prospect in the fields of military equipment, aerospace and wearable electronic devices.

This invention discloses a method for efficiently extracting rare earth elements from mine sediment based on flash Joule heating technology, thus establishing a rare earth element extraction technology field. The method comprises the following steps: (1) drying and grinding the mine sediment to be extracted to obtain rare earth precursor powder; (2) heat-treating the rare earth precursor powder using flash Joule heating under a protective atmosphere, followed by cooling and grinding to obtain flash Joule-heat-treated rare earth powder; (3) activating the flash Joule-heat-treated rare earth powder in an acid treatment solution, filtering after activation, and collecting the filtrate to obtain a rare earth element extract. Using this invention, efficient extraction of rare earth resources from mine sediment can be achieved.

The utility model discloses a controllable atmosphere Joule thermal reaction device which comprises a support and U-shaped clamps arranged on the two sides of the top face of the support, an adjusting mechanism is arranged on the surfaces of the U-shaped clamps, the distance between the two U-shaped clamps is adjusted through the adjusting mechanism, a clamping mechanism is arranged on the surfaces of the U-shaped clamps, and the clamping mechanism is arranged on the top face of the support. And the conductive resistor and the reaction material are clamped and fixed through the clamping mechanism. The utility model relates to the technical field of functional material preparation. According to the controllable atmosphere Joule thermal reaction device, the gas inlet pipe is introduced to the bottom of the conductive resistor for generating Joule heat, and the sealing box is additionally arranged outside the Joule thermal reactor, so that the aim of controlling the reaction atmosphere is achieved, the atmosphere can directly act on the conductive resistor and a material to be prepared, and the controllable atmosphere Joule thermal reaction device has the advantage of high atmosphere controllability.

The invention relates to a battery (10) comprising a casing (20) housing electrochemical cells and a cell management system (42). According to the invention, the battery comprises, within the casing (20): - at least one heating layer (60) incorporating an electrical track adapted to be supplied with current by the electrochemical cells so as to heat said electrochemical cells by Joule heating, and - a transistor (80) controlled by the management system, this management system being programmed to modulate the electrical power received by said at least one heating layer in pulse width. Figure for the abstract: Fig. 1

The invention discloses a lightning stroke positioning method and system, relates to the technical field of power system safety protection, and solves the problem of large lightning stroke positioning error in a general scheme. An initial lightning stroke positioning clue is provided through electromagnetic wave data, the Joule heating effect of a discharge point is captured through infrared thermal imaging, non-lightning stroke condition interference is eliminated through a vibration spectrum, and under three-mode physical quantity complementation, multi-dimensional characteristics such as electromagnetic radiation, energy release and mechanical shock when the power transmission line is struck by lightning can be represented; bayesian fusion probability calculation is carried out based on the characteristics, so that more accurate lightning stroke points can be obtained, and protection starting and first-aid repair of a subsequent power system are facilitated.

A processing apparatus is capable of efficient processing in a short time and obtaining a processed food product with exemplary quality.The processing apparatus includes a processing unit and a pair of electrodes. The processing unit is in a tubular shape, and an accommodation space capable of accommodating a material to be processed is formed as an internal space thereof, and includes a heating unit. A heating space constituting a part of the accommodation space is formed in the heating unit. The pair of electrodes are configured to clamp the material to be processed in the heating space for joule heating, and are configured to be movable from the heating space while clamping the material to be processed.

The invention relates to an in-situ integrated Joule hot membrane structure for an MABR (Membrane Aerated Baffled Reactor) and an application of a bioreactor for treating low-temperature wastewater, belonging to the field of low-temperature wastewater treatment. The membrane structure comprises a biological carrier layer and a Joule heating layer; the biological carrier layer is made of one or more of silicone rubber, polyvinylidene fluoride, polyether sulfone, polyethylene and polypropylene; the surface of the biological carrier layer is required to be high in oxygen permeability, and the thickness of the biological carrier layer is 100-300 microns; the Joule heating layer is made of one of carbon felt, graphite felt or graphene heating sheets; the void ratio of the Joule heating layer is 70%-90%, and the surface aperture distribution is 10-100 [mu] m. Current is applied to the membrane structure, and heat is generated through the Joule heating effect of the membrane structure. The heat achieves the function in a heat conduction mode, and through heat conduction of the substrate, a stable and appropriate growth temperature environment is maintained for the biological membrane attached to the substrate. The synchronous thermal management strategy ensures that the biological membrane keeps high metabolic activity, so that efficient biodegradation of pollutants in the low-temperature wastewater is realized.

The invention discloses a method for preparing complex silicon-carbon-containing solid waste into multi-type silicon carbide or multi-structure graphene based on instantaneous carbon thermal shock selective regulation and control. The method comprises the following steps: putting the complex silicon-carbon-containing solid waste into a graphite reactor; current is applied to the graphite reactor through Joule heating for flash evaporation treatment, the temperature range of the flash evaporation treatment is 1500-2800 DEG C, and the heating rate is larger than 400 DEG C / s; by cooperatively controlling the intensity of the applied current, the flash evaporation temperature and the flash evaporation time, the complex silicon-carbon-containing solid waste is converted into a target product; the target product comprises at least one of cubic crystal form 3C-SiC, hexagonal crystal form 6H-SiC, turbine layered graphene and hybrid AB-turbine layered graphene. According to the method, the non-equilibrium dynamic principle is utilized, the problems that a traditional recycling method is difficult to cooperatively treat complex solid waste, low in product value and single in type are effectively solved, high-selectivity and high-valued conversion of the waste is achieved, the technological process is simple, energy is saved, environment friendliness is achieved, and a new way is provided for solid waste recycling.

A kind of 690 alloy electrode for joule heating ceramic furnace and its using method, including the mechanical processing of 690 alloy electrode, laser welding and high temperature annealing treatment, the long-term working temperature of the electrode is 1150 DEG C, up to 1200 DEG C at most, the electrode has the advantages of good cooling effect, small stress, corrosion resistance, long service life etc.

The invention provides a composite current collector and a preparation method thereof, a lithium metal battery and electric equipment, the composite current collector comprises a base film and a metal layer arranged on at least one side of the base film, the metal layer comprises a copper layer and an alloy layer, and the copper layer is located between the base film and the alloy layer; the alloy layer is formed in a Joule heating mode. The composite current collector provided by the invention has improved structural stability.

This invention discloses an MXene-coated modified PLA nonwoven fabric and its preparation method. The preparation method includes the following steps: preparing an MXene solution using HCl and LiF; preparing PLA nonwoven fabric through electrospinning; etching and plasma surface treatment of the PLA nonwoven fabric to obtain the nonwoven fabric body; and spraying the MXene solution onto the surface of the nonwoven fabric body to obtain the MXene-coated modified PLA nonwoven fabric. This invention establishes a lightweight MXene-coated modified nonwoven fabric preparation technology, breaking through the technological gap in this field. The obtained nonwoven fabric material has good thermal stability, electrical conductivity, and electrothermal / photothermal conversion properties, which can integrate Joule heating and solar photothermal conversion into wearable heating systems, enabling precise body heating in various scenarios such as indoor / outdoor, day / night, sunny / cloudy conditions. Using polylactic acid as the base material is more environmentally friendly while giving the nonwoven fabric good breathability and toughness, enriching its application range.

The invention provides a carbon molecular sieve gas separation membrane prepared based on Joule heating and a preparation method and application thereof. According to the preparation method, 6FDA-DAM polyimide is used as a precursor material, an aprotic polar solvent is used as a solvent, a compact precursor film is prepared through a solvent evaporation method, and carbonization treatment is carried out in a vacuum environment in a Joule heating mode. By controlling the carbonization duration, the microporous structure in the membrane, the formation of an ordered carbon skeleton and the removal degree of functional groups can be adjusted, the conversion from surface diffusion to a molecular sieve screening mechanism is realized, and the gas separation capacity is remarkably improved.

1. The name of the design product: the graphic user interface of the touch screen control panel of the joule heat heating equipment of electronic equipment. 2. The use of the design product: for electronic equipment. 3. The design points of the design product: the interface content of the graphic user interface in the screen. 4. The picture or photo that best shows the design points: design 1 front view. 5. The product carrier is the conventional design, and the rear view, left view, right view, top view, and bottom view are omitted. 6. Design 1 is designated as the basic design. 7. The use of the graphic user interface: for inputting joule heat control parameters and displaying the running state on the touch screen. 8. Other circumstances that need to be explained are shown in the figure: the interface shown in design 1 front view is the main interface, and the interface jumps to the interface for inputting joule heat control parameters as shown in the design 1 interface change state diagram by clicking "set picture" in the design 1 front view interface; the interface shown in design 2 front view is also the main interface, and the interface jumps to the interface for inputting joule heat control parameters as shown in the design 2 interface change state diagram by clicking "set picture" in the design 2 front view interface.

This invention discloses a forming device and method for synergistic control of sheet metal partitioned edge pressing and rapid heating. Utilizing the Joule heating effect generated when a pulsed current passes through metal, electrodes built into the partitioned edge pressing device enable rapid heating and temperature control of the forming blank in different regions. This allows for the design of the partitioned edge pressing device's shape and size based on the specific shape characteristics of the part. Furthermore, the device synergistically controls the edge pressing force and forming temperature of different partitioned blanks during the forming process, reducing work hardening and improving material fluidity, thereby achieving high-quality forming of complex-shaped thin-walled components. The comprehensive utilization of the rapid heating and high plastic deformation capabilities of the metal sheet assisted by current, along with the design concept and tooling structure featuring independent partitioned edge pressing force and forming temperature control, makes this patent inventive and novel in the field of high-quality, precise forming of thin-walled metal components.