311 results about "Particle aggregation" patented technology

The invention belongs to the technical field of calcium hydroxide preparation, and particularly relates to a preparation method of calcium hydroxide with high specific surface area, which comprises the following steps: S1, adding triethanolamine and diethanolisopropanolamine into water, and uniformly mixing to obtain an active agent solution; s2, mixing quick lime with an active agent solution, and carrying out digestion reaction to generate a calcium hydroxide coarse material; and S3, sieving and drying the calcium hydroxide coarse material to obtain the calcium hydroxide with the high specific surface area. The specific surface area of calcium hydroxide can be remarkably increased through the active agent solution, meanwhile, the uniformity and sufficiency of the quick lime digestion reaction are optimized, the calcium hydroxide particle aggregation phenomenon is reduced, and finally the calcium hydroxide product with the high specific surface area and the high activity is prepared.

This invention discloses a method for preparing a CuZnAlGa-based layered double hydroxide (TLH)-derived catalyst for methanol production from carbon dioxide-rich syngas. Using Cu, Zn, Al, and Ga metal salts as precursors, Na₂CO₃ and NaOH as precipitants, and a mixed alcohol-water solution as an auxiliary solvent, co-precipitation is performed under controlled temperature and pH to obtain a LDH-like catalyst precursor. After high-temperature calcination and in-situ reduction in a hydrogen atmosphere, a layered framework structure of Cu nanoparticles immobilized by oxides is obtained. The LDH-like structure provides lattice confinement, preventing Cu particle aggregation, and the interaction between Cu and the oxides enhances the catalyst surface's adsorption capacity for CO and CO₂, thereby improving the activity and stability of methanol production from carbon dioxide-rich syngas.

To provide a basin area member which has high hydrophilic nature, matte appearance and can suppress slipperiness.SOLUTION: A basin area member comprises: a substrate; and a coating layer covering the substrate. The coating layer has: a ground layer provided on a surface of the substrate; and a surface layer provided on a part of a surface of the ground layer. The coating layer has: a first area where the ground layer is covered with the surface layer; and a second area where the ground layer is not covered with the surface layer. The surface layer includes: a coating film formed of a cured object of a hydrophilic coating in the first area; and an aggregate formed by aggregation of multiple particles in the coating film. The aggregate has parts where two or more particles overlap in a lamination direction. A ratio of an area of the second area to a total of areas of the first area and second area in viewing along the lamination direction is 1.6% or more and 50% or less in the basin area member.SELECTED DRAWING: Figure 3

The invention relates to physico-chemical combined sunscreen water dispersion slurry as well as a preparation method and application thereof. The water dispersible slurry comprises 5-20% of an inorganic sun-screening agent, 25-50% of an organic sun-screening agent, 10-30% of a humectant, 5-15% of an emulsifier, 0.1-2% of a preservative and the balance of water. The preparation method comprises the following steps: heating and dissolving the organic sun-screening agent, and cooling to room temperature; dispersing the emulsifier into the humectant, and uniformly stirring to prepare D-phase gel; adding inorganic sun-screening agent powder and the organic sun-screening agent liquid into the D-phase gel, and stirring at a high speed to obtain viscous O / D-phase gel; the mixed water and the O / D phase gel are stirred and dispersed into O / W emulsion; and carrying out high-pressure homogenization on the O / W emulsion. The water dispersible slurry can be used as a raw material to be applied to sunscreen daily cosmetics, especially O / W type sunscreen cream. By precisely regulating and controlling D-phase emulsification and a high-pressure homogenization process, a stable nano dispersion system is constructed, particle aggregation is inhibited, and the stability of the water dispersion slurry is improved. The prepared sunscreen water dispersible slurry is easy to disperse and suitable for various sunscreen systems, and the production efficiency is greatly improved.

The invention belongs to the technical field of kitchen ware coatings, and discloses a preparation method of a wear-resistant coating based on nano structure optimization, through a specific ratio of nano silicon carbide, titanium dioxide, boron nitride and silver, four particles form a complementary and synergistic functional system-silicon carbide provides a hardness basis, boron nitride optimizes the antifriction performance by means of a layered structure, and the wear-resistant coating is prepared. Titanium dioxide enhances the chemical stability; by matching with a composite dispersion process of high-energy ball milling and ultrasonic treatment, particle aggregation is broken, so that the coating forms a uniform and compact nano-structure, the structure can effectively disperse friction stress, the wear resistance is remarkably improved, and the service life of the kitchen ware in a high-frequency cooking friction environment is greatly prolonged; a kitchen ware substrate is subjected to 80-mesh white corundum sand blasting to form a rough surface, then impurities are removed through ultrasonic cleaning, and a good interface condition is created for coating adhesion; and a subsequent stepped vacuum curing process promotes chemical bonding of the nanoparticles and the polyimide resin, and the binding force of the interior of the coating and the binding force of the coating and the substrate are enhanced.

The present application provides a composite current collector, and a preparation method therefor and the use thereof. The composite current collector comprises: a polymer supporting layer; a transition layer, which is provided on the surface of at least one side of the polymer supporting layer, wherein the material of the transition layer comprises a nano metal material modified with a silane coupling agent, the nano metal material comprising a nano metal simple substance and / or a nano metal oxide; and a conductive layer, which is provided on the surface of the transition layer along a direction away from the polymer supporting layer. In the present application, introducing the nano metal material modified with a silane coupling agent as a transition layer can tightly combine the organic and inorganic interfaces, and improve the bonding force between the polymer supporting layer and the transition layer; in addition, the particle aggregation degree can be reduced by means of the modification of the silane coupling agent, such that the particles are evenly distributed in the transition layer, thereby improving the bonding force between the conductive layer and the transition layer. The composite current collector has excellent bonding force and stability; and the safety performance and high-temperature cycle performance of a battery prepared on this basis are significantly improved.

A method for removing particles from water, the method comprising: supplying gelatinous zooplankton mucus to water comprising particles; allowing formation of particle aggregates in the water by allowing interaction between the particles in the water and the gelatinous zooplankton mucus; removing the particle aggregates from the water by passing the water comprising particle aggregates through a filter configured to receive water comprising particle aggregates and further filter the water; and exiting filtered water from the filter. A system for removing particles from water with the aforementioned method is also provided. Additional embodiments of the system and method for removing particles from water are disclosed herein.

The invention discloses a plastic particle mixer for cable material processing, and relates to the related technical field of plastic waste recycling, the plastic particle mixer comprises an arranged mixing box, two groups of feeding hoppers are arranged on the mixing box, the lower parts of the feeding hoppers are communicated with the top of the mixing box through feeding pipelines, and a driving box is mounted on the mixing box; a motor is arranged in the driving box, the output end of the motor is connected with a rotating shaft, the rotating shaft is connected into the mixing box in a penetrating manner, a stirring structure is mounted on the outer side of the rotating shaft, the stirring structure comprises a stirring part and a scraping plate which are mounted on the outer side of the rotating shaft, and a gas conveying assembly is mounted on the outer side of the rotating shaft. According to the plastic particle mixer for cable material processing, the stirring structure rotates in the mixing box to mix particles, input recycled plastic particles are scattered through cooperation of gas, the problem of uneven mixing caused by particle aggregation is avoided, and the overall mixing efficiency is improved.

The invention relates to the technical field of metal powder material preparation, and particularly discloses antimony-doped cesium terbium chloride microcrystalline powder and a preparation method thereof. The chemical composition of the microcrystalline powder is Cs < 5 > Tb < 1-x > Sb < x > Cl < 8 >. 6H < 2 > O, wherein x is equal to 0.05 to 0.30. The preparation method comprises the following steps: mixing cesium chloride, terbium chloride hexahydrate and antimony trichloride according to a molar ratio of 5: 0.8: x; adding pyridine hydrochloride as a chlorine element supplement, wherein the dosage of the pyridine hydrochloride is that 0.05-0.20 mmol of Py.HCl is used for every 1 mmol of CsCl; adding stearic acid as a process dispersant; and through combined treatment of mechanical ball milling and freeze drying, antimony-doped cesium-terbium-chlorine microcrystal powder with regular morphology and good dispersibility is obtained. The method is simple in process and mild in condition, particle aggregation can be effectively inhibited, the crystallinity and dispersion uniformity of the powder are improved, and the prepared microcrystal powder shows excellent optical performance.

According to the invention, a polyether modified polysiloxane and polyether emulsified silicone grease composition is used as an oil phase for emulsion preparation, and hydrophilic silicon dioxide is dispersed in a polyacrylate aqueous solution at a high speed to be used as a water phase for emulsion preparation. The hydrophilic silicon dioxide is stably dispersed in a water phase in the form of fine particles due to the thickening and stabilizing effects of the polyacrylate. In emulsion preparation, the emulsion has excellent stability due to a net structure formed by hydrogen-bond interaction among hydroxyl groups on the surface of hydrophilic silicon dioxide, nanoscale polyether modified polyacrylate latex introduced by compounding in the later stage is adsorbed on the surfaces of particles in the emulsion, demulsification caused by particle aggregation is prevented, and the dispersion stability of the defoaming agent is further enhanced. Besides, the used hydrophilic white carbon black, polyacrylate and polyether modified polyacrylate almost have no influence on the clarity of the liquid detergent, and the silicone polyether emulsified silicone grease composition is combined, so that the compatibility of the silicone grease composition and the liquid detergent is increased, and meanwhile, the clarity of the liquid detergent is also ensured.

The present invention relates to a preparation process of a high-density tungsten-copper alloy. The preparation process comprises: mixing oxide powder of copper having a certain proportion with oxide powder of tungsten in a dual-power mixer, performing crushing and activation treatment on the mixed powder in a high-speed crusher, and then reducing in a hydrogen atmosphere to obtain the nano tungsten-copper composite powder; and carrying out sheathing, degassing, and hot isostatic pressing treatment on the nano tungsten-copper composite powder, carrying out thermoplastic processing, and then carrying out annealing treatment to obtain the high-density tungsten-copper alloy. The process of the present invention is simple and controllable, has high operability, and is easy to industrialize; the phenomena of component segregation caused by preparation of the tungsten-copper alloy by an infiltration method, and uneven crystal grain size caused by particle aggregation and growth are avoided; and the proportion of the two-phase components can be accurately regulated, so that the tungsten-copper alloy with a tungsten content of 5%-95% can be prepared. The density (relative density) of the prepared tungsten-copper alloy reaches 99.6% or above; the oxygen content is lower than 40 ppm; the alloy has a uniform structure; the crystal grains are fine; and the present invention has wide application prospects and popularization value.

The invention belongs to the field of composite materials, and relates to a preparation method of a modified composite material with uniformly dispersed high-content aluminum alloy particles, which comprises the following steps: mixing 20-50wt% of aluminum alloy particles and epoxy resin according to a certain proportion to obtain a mixture, and combining the mixture with carbon fibers to obtain a prepreg; paving a plurality of layers of prepregs on the forming mold, and sealing a bag to obtain a cured and formed sample piece; the sample piece is put into vibration equipment to be heated and cured, the curing temperature ranges from 75 DEG C to 85 DEG C, and heat preservation is conducted within 60 min; putting the sample piece into an autoclave, heating to 110-130 DEG C, pressurizing to 0.5 MPa or above, keeping the temperature for 90 minutes or above, and cooling to obtain a cured and molded modified composite material; and vacuumizing is kept during both the heating period and the cooling period. According to the invention, through a composite curing method of first vibration and then high pressure, the problems of particle aggregation and overhigh porosity in the high-content aluminum alloy particle modified composite material can be smoothly solved.

The invention discloses a small particle shape and granularity detection method based on an image. According to the method, an image device is combined with an object space telecentric lens to collect small particle images; performing target detection on the particles in the image by adopting an improved YOLOv9-CSA model to obtain a bounding box of the particles; inputting the bounding box as a prompt into the SAM2-PDA model, and generating an initial segmentation mask of the particles; for a particle aggregation scene, identifying and screening out single particle masks which are not shielded through a particle shape detection algorithm based on contour geometric features; and calculating the area and the equivalent circle diameter of the particles based on the screened masks, and finally obtaining accurate particle size distribution data such as D10, D50, D90, the average diameter and the total number of the particles. According to the method, through cooperative work of the constructed YOLOv9-CSA and SAM2-PDA and in combination with geometric feature particle screening, the precision and reliability of particle size analysis of the small particles are effectively improved, and an efficient and automatic solution is provided for industrial-grade particle size detection.

The invention discloses a dynamic adding control method of calcium oxide in flue gas desulfurization, which relates to the technical field of environmental engineering, and comprises the following steps: constructing a computational fluid mechanics and discrete element method coupling simulation model, and introducing a humidity parameter field, a particle size parameter field and an agglomeration degree parameter field into the model, and generating a spatial distribution map and a blockage probability map of the calcium oxide particles in the conveying path, and generating a conveying path control priori according to the spatial distribution map and the blockage probability map. Through coupling simulation and multi-array sensing, accurate recognition of particle aggregation and targeted disturbance control are achieved, the effective adding efficiency of calcium oxide is improved, model parameters are optimized in combination with by-product quality feedback, dynamic closed loop and predictive control are achieved, the desulfurization efficiency is remarkably improved, resource waste is reduced, the by-product quality is stabilized, and the method is suitable for industrial production. And the intelligent level of the system is enhanced.

The invention belongs to the crossing field of a surface acoustic wave device, a microfluidic technology and a surface enhanced Raman spectrum, and relates to a high-flux SERS substrate preparation device based on acoustic flow control. The device adopted by the method comprises a heating module and an enrichment module. And the heating module controls the temperature change, so that chip breakage caused by overheating is avoided. In the enrichment module, when an alternating electric signal is applied, an interdigital electrode excites the surface of the chip to generate surface acoustic waves, and then vibration of solid particles is triggered, so that target particles move along the surface of the substrate and are enriched. Meanwhile, the device adopts a bionic shark type hydrophobic film, so that the contact angle of liquid drops reaches 140 degrees, internal particles are convenient to gather, and the enrichment speed and the drying efficiency of the particles are remarkably improved. The method is easy and convenient to operate, enrichment and drying treatment is provided for subsequent target particles, and the detection sensitivity of the target particles in Raman spectrum analysis is remarkably improved; and a solution in a liquid sample can be quickly evaporated into solid residues.

A network structure with a novel composition is obtained by calcining an aggregate of silica gel particles. The network structure comprises a multitude of silicon dioxide-based particle fragments (51) and a multitude of silicon dioxide-based connecting fragments (52) that link the particle fragments (51) to form a three-dimensional, interconnected network. For example, the network structure can be formed on an air-permeable base material.

One aspect of the present disclosure provides composite particles comprising: a plurality of coated particles that contain an inorganic crystal and a reduced graphene oxide and have a coating layer provided on the surface of the inorganic crystal; and a sheet containing a reduced graphene oxide, wherein the sheet includes secondary particles in which the plurality of coated particles are aggregated.

The present invention relates to a method and a device for purifying outdoor and indoor air contaminated with solid particles. The method comprises a specific sequence of measures to promote the aggregation and / or coagulation of the particles, including ionization, followed by a series of filtrations. The invention comprises a device for implementing the method.

The invention relates to the technical field of all-solid-state lithium batteries, and discloses a high-ionic-conductivity inorganic nanoparticle dispersed polyether composite solid electrolyte composition, which is prepared from the following components in percentage by weight: 35 to 65 percent of inorganic solid electrolyte nanoparticles, 15 to 45 percent of polyether polymer matrix precursor, 2 to 8 percent of cross-linking agent, 10 to 20 percent of lithium salt and initiator, wherein the molar ratio of lithium salt to ether oxygen atoms is 1 / 20, a three-dimensional cross-linked network is constructed through an in-situ ultraviolet polymerization reaction, high-content inorganic nanoparticles are physically locked in a polymer grid, and a continuous ion transmission channel is constructed at room temperature through a percolation effect while particle aggregation is inhibited, so that the high-content inorganic nanoparticles can be prepared. The composition has excellent ionic conductivity and mechanical flexibility, effectively solves the problems of high brittleness and low conductivity of the traditional composite electrolyte, only needs wet coating in the preparation process, and is suitable for large-area film production.

The invention discloses a gas-solid fluidized bed with a self-adaptive adjustment internal component under an ocean working condition, the gas-solid fluidized bed comprises a container and the internal component, the internal component comprises a pendulum bob suspended at the center position of an initial bed layer in a container fluidized bed, the pendulum bob and the inertia of particles in the container fluidized bed are not synchronous, and particle aggregation is effectively disturbed; the volume of the connecting piece accounts for 0.5%-5% of the volume of an initial bed layer of the fluidized bed, so that the connecting piece occupies a key space without being blocked, and the problem of inhibiting particle aggregation is solved; by controlling the volume and inertia of the pendulum bob and combining with a multi-degree-of-freedom three-dimensional swinging space, a dynamic physical occupation structure for a particle accumulation area is formed, so that the gas-solid phase contact efficiency is improved, and the problems that the particle accumulation area cannot be eliminated and the maintenance cost is high in the prior art are solved; and the operation stability and the working efficiency of the fluidized bed under the swinging working condition of the ocean floating platform are obviously improved.

The application discloses an aerogel filling structure, which comprises a vapor-permeable fabric and / or a vapor-permeable film and aerogel large-particle monomers and / or aerogel small-particle aggregates; the aerogel large-particle monomers comprise aerogel large particles and a wrapping layer wrapped outside the aerogel large particles; the vapor-permeable fabric and / or the vapor-permeable film completely wrap the plurality of aerogel large-particle monomers and / or the aerogel small-particle aggregates, and the size of the aerogel large-particle monomers and / or the aerogel small-particle aggregates is greater than the size of a vapor-permeable gap and a needle hole of the vapor-permeable fabric and / or the vapor-permeable film. The aerogel filling material is made into clothing and bedding, which has excellent heat preservation and insulation performance, high human body fitting degree, reduced or even eliminated free air layer in the clothing, further improved heat preservation performance, no aerogel powder dropping phenomenon, no health hazards to users, no deterioration of heat preservation and insulation performance caused by the reduction of aerogel due to powder dropping, vapor permeability, no stuffiness, and high use comfort.

The invention discloses a wafer IPA drying method for improving wafer edge particle aggregation, and belongs to the technical field of semiconductor manufacturing. The method comprises the following steps: after a wafer is cleaned, lifting the wafer from pure water to the 4 / 5 position of the wafer to be separated from the water surface by using a bottom supporting table, and then clamping the 2 / 3 edge position of the wafer by using a top clamp to continuously lift until the wafer is completely separated from the water surface; in the lifting process, the surface of the wafer is purged through mixed gas of N2 and IPA, and the completely-dried wafer is obtained. According to the invention, the wafer is dried by replacing a wafer lifting mode and cooperating with an IPA drying mode, so that the wafer can be completely dried, and the watermark problem caused by local dryness due to contact between the wafer and the supporting table in the medium replacement process can be avoided. The method is wide in practicability, simple in technological process, short in treatment time, low in cost and good in application prospect.

The utility model relates to the technical field of chemical reaction kettles, provides an anti-precipitation reaction kettle for organic chemical industry, and solves the problems that the existing reaction kettle is low in mixing efficiency due to design defects and is difficult to meet the requirements of upper and lower layers in the kettle. The reaction kettle comprises a kettle body, a baffle assembly is arranged in the kettle body, the baffle assembly comprises at least three baffles which are uniformly distributed around the axis of the kettle body, each baffle is provided with at least one flow guide area, and a plurality of flow guide holes are formed in each flow guide area; the flow guide assemblies are arranged on one sides of the flow guide areas of the baffles, each flow guide assembly comprises a valve plate and a reset torsion spring, and the valve plates are rotationally connected with the baffles through the reset torsion springs; the stirring assembly comprises an upper-layer stirrer and a lower-layer stirrer which are independently driven by split shafts; the upper-layer stirrer rotates at a high speed to generate radial flow and disperse particle aggregation, and the lower-layer stirrer rotates at a low speed to form axial wall-scraping flow to prevent bottom precipitation.

Provided is a soft-magnetic flat powder that can contribute to the noise suppression performance of a magnetic sheet 2. The magnetic sheet (2) comprises a matrix (4) and a powder dispersed in the matrix (4). The matrix 4 is a polymer composition. The base material of the polymer composition is a rubber or a resin. The powder is an aggregate of a plurality of flat particles 6. These flat particles 6 are composed of an Fe-Si-Al-based alloy. This alloy contains B in the amount of 0.001-0.020 mass%, inclusive, C in the amount of 0.005-0.050 mass%, inclusive, and no more than 1.00 mass% of O.

The invention relates to the technical field of composite material preparation, in particular to an efficient preparation process of a continuous fiber reinforced silicon carbide ceramic matrix composite material, which comprises the following steps: selecting silicon carbide powder and phenolic resin powder, putting into a sodium carboxymethyl cellulose aqueous solution, and stirring; in the stirring process, a non-uniform index is obtained according to the change condition of the pixel reflectivity in the hyperspectral image of the mixed slurry, and then the local distribution difference degree is obtained; the method comprises the following steps: acquiring a particle aggregation characterization value at each moment based on fluctuation of a local distribution difference degree, calculating a stirring effective degree to control a stirring speed, putting continuous carbon fiber plain cloth into resin matrix slurry, dipping, drying and curing to obtain a resin matrix composite material biscuit, and carbonizing to obtain the continuous fiber reinforced porous carbon matrix composite material. And putting the mixture into a vacuum sintering furnace for melt siliconizing treatment to obtain the continuous fiber reinforced silicon carbide ceramic matrix composite material. The compact uniformity of the continuous fiber reinforced silicon carbide ceramic-based composite material is improved.

This invention provides a method for fabricating a solid-phase surface-enhanced Raman scattering (SERS) substrate with adjustable spacing. The method involves injecting metal nanoparticles and an aggregator into an ultrafast microfluidic mixer. The aggregator alters the repulsive forces between the metal nanoparticles, thereby controlling the spacing of the nanoparticles by varying the concentration of the aggregator. Furthermore, the mixing speed of the ultrafast microfluidic mixer ensures uniform adsorption of the aggregator on the surface of each nanoparticle, preventing uncontrolled aggregation of the metal nanoparticles and forming a SERS substrate with uniform SERS "hot spots." This invention actively controls the SERS "hot spots" by adjusting the aggregator concentration in the ultrafast microfluidic mixer to change the spacing of the nanoparticles, solving the problem of uncontrollable induced nanoparticle aggregation in liquid-phase SERS substrate preparation, and producing a highly sensitive, highly uniform, and adjustable-spacing solid-phase SERS substrate.

The invention discloses a device and a method for preparing a tungsten-copper particle gradient composite material through vibration induction, and belongs to the crossing field of powder metallurgy and material forming machining. Aiming at the problems of powder agglomeration, non-uniform component distribution, difficulty in accurate control of a gradient structure and poor interface continuity in the preparation of a traditional tungsten-copper gradient composite material, a powder mixing-vibration mold filling-hot pressing sintering integrated process is adopted; tungsten copper powder distribution is optimized through a vibration external field capable of being precisely regulated and controlled. High-frequency small-amplitude vibration breaks particle aggregation so as to improve the filling uniformity, and low-frequency large-amplitude vibration guides tungsten copper two phases to form a preset gradient. The preparation device is used for completing powder homogenization and gradient regulation and control, and the tungsten-copper gradient composite material is prepared in cooperation with follow-up spark plasma sintering. According to the method, the vibration external field is only applied in the tungsten-copper particle mold filling stage, the process complexity does not need to be increased, the microstructure uniformity of the tungsten-copper composite material can be remarkably improved, and the gradient structure transition continuity is enhanced. The prepared composite material has the characteristics of high temperature resistance and low expansion of tungsten and high heat conductivity and high electric conductivity of copper, and can be widely applied to the high-end manufacturing fields of electronic power, aerospace, nuclear industry and the like.

The invention provides a method for detecting the sugar content of coffee by using CuAu alloy composite carbon nanospheres as an electrochemical sensing material. The CuAu alloy composite carbon nanospheres used in the method are prepared through a one-step method, high-pressure conditions and gas protection are not needed in the process, and the method has industrial production potential. The spherical symmetrical structure can effectively inhibit the reduction of the specific surface area caused by the aggregation of nano-particles. Compared with detection means such as chromatography and the like needing expensive equipment, the electrochemical method adopted by the invention is simple and convenient to operate, and does not need enzyme to participate in complex pretreatment. In addition, the sensing material provided by the invention only has excellent anti-interference capability on carbohydrates in coffee, and can effectively ensure the test accuracy.

This invention provides a negative electrode sheet and its preparation method, a battery, a battery pack, and an electrical device. The negative electrode sheet includes a negative electrode active layer, and the zeta potential of the negative electrode active layer is less than or equal to -53 mV. The negative electrode sheet provided by this invention, by limiting the zeta potential of the negative electrode active layer to less than or equal to -53 mV, can enhance the electrostatic repulsion between particles, prevent particle aggregation, improve the dispersion uniformity and stability of the negative electrode active material in the negative electrode sheet, avoid the appearance of black spots or dark streaks on the negative electrode sheet, and reduce the risk of localized lithium plating during battery charging.

The invention provides a temperature-controllable disperse dye reaction kettle, and relates to the technical field of reaction kettles, the temperature-controllable disperse dye reaction kettle comprises an outer kettle shell, the outer kettle shell is made of a high-strength material, can stably support internal components, isolates interference of an external environment on reaction in the kettle, and plays a core role in overall supporting and protection; the outer kettle shell is internally provided with an inner kettle, the inner kettle is made of a corrosion-resistant material with adaptive heat-conducting property and can be in direct contact with a disperse dye reaction system, the middle-layer heat exchange pipes are uniformly distributed along the inner wall of the inner kettle in the circumferential direction, so that the local temperature deviation in the kettle can be accurately compensated, and the temperature gradient and the micro-level of the edge and the center are avoided; the heat conduction oil is introduced into the hollow channels of the hollow stirring shaft and the paddles, and is matched with the heat dissipation holes in the surfaces of the paddles, so that a heat exchange function is permeated to a material core area, the problem of disperse dye colored light deviation caused by uneven temperature is greatly reduced, meanwhile, dye particle aggregation is effectively inhibited, and the stability and consistency of dye products are remarkably improved.