1009 results about "Magnetic stirrer" patented technology

The invention discloses a solid waste admixture prepared based on microbiological treatment of regenerated micro-powder and a preparation method, and aims to overcome the defect that the dilution effect is remarkable when regenerated micro-powder is directly used as an admixture in the prior art. The method comprises the following steps: treating waste concrete to obtain regenerated micro powder; culturing bacillus pasteurii, and preparing a bacterial solution with a target OD value; mixing the regenerated micro-powder and a bacterial solution according to a certain solid-to-liquid ratio, adding urea and biochar, and reacting in a magnetic stirrer for a set time to obtain modified regenerated micro-powder; and taking out the modified regenerated micro powder, filtering, drying to constant weight, and fully scattering to obtain the solid waste admixture. According to the present invention, the bacteria-containing culture solution is subjected to centrifugal treatment and the low concentration of the bacteria solution is adopted, such that the by-products generated by the metabolism of the bacillus pasteurii are reduced on the premise of ensuring the sufficient decomposition of the urea, and the prepared regenerated micro-powder contains rich ultrafine calcium carbonate on the surface, and can be adopted as the solid waste admixture to significantly enhance the compressive strength of the cement matrix.

The invention provides a preparation method for improving the performance and carbon sequestration rate of a steel slag carbonized product, and the preparation method specifically comprises the following steps: (1) weighing the following raw materials in percentage by mass: 50-100 parts of steel slag powder, 13-17 parts of deionized water and 1 part of alcohol amine; (2) mixing the weighed deionized water with alcohol amine to obtain an alcohol amine solution, stirring the alcohol amine solution in a magnetic stirrer, continuously introducing CO2 gas with the concentration of 99.9% to carbonate the alcohol amine solution, and controlling the gas introduction time to be 2 hours; (3) doping an alkylol amine solution subjected to carbonation treatment into the weighed steel slag powder, and uniformly stirring by using a neat paste stirrer; (4) pressing the steel slag mixture into steel slag product briquettes in a compression molding manner; and (5) putting the briquette into a carbonization kettle, and introducing CO2 gas with the purity of 99.9% to prepare a steel slag carbonized product. The problem that the interior of the steel slag carbonized product cannot be fully carbonated and maintained is solved, so that the comprehensive performance and the carbon sequestration rate of the steel slag carbonized product are remarkably improved.

The invention belongs to the technical field of friction catalysis, and particularly relates to application of an aluminum oxide substrate in friction catalytic degradation of high-concentration organic dye wastewater, an aluminum oxide ceramic chip is used as a substrate, titanium dioxide nano powder is used as a catalyst, and the aluminum oxide ceramic chip is fixed at the bottom of a flat-bottom glass beaker; the method comprises the following steps: adding organic dye wastewater, a magnetic turntable and titanium dioxide nano powder into a flat-bottomed glass beaker, then putting the flat-bottomed glass beaker in a dark environment at room temperature, stirring and reacting on a magnetic stirrer for 90-150 minutes, and after the reaction is completed, completely degrading organic dye in the wastewater. According to the method, the aluminum oxide ceramic chip is added into a system for performing friction catalytic degradation on the organic dye wastewater by using the titanium dioxide nano powder as the substrate, so that the degradation rate of the organic dye is greatly improved, the complete degradation time of the organic dye is shortened, and a new thought is provided for performing friction catalytic degradation on the organic dye wastewater by using the titanium dioxide nano powder.

The invention relates to the technical field of oil and gas field exploitation, and discloses a drag reducer for a multifunctional fracturing fluid and a preparation method thereof.The preparation method of the drag reducer for the multifunctional fracturing fluid comprises the steps that acrylic acid, acrylamide, 2-acrylamido-2-methylpropanesulfonic acid and modified itaconic acid are added into deionized water, stirring and mixing are conducted, and the drag reducer for the multifunctional fracturing fluid is obtained. Nitrogen is introduced for 30-40 min to remove oxygen, then azobis (isobutylamidine) hydrochloride is added, the mixture is stirred to react for 48-72 h at the temperature of 45-50 DEG C, and a polymer solution is obtained; and directly and uniformly mixing the polymer solution, the compatilizer and the modified nano silicon dioxide, and reacting in a magnetic stirrer at 60-70 DEG C for 1.5-2 hours to obtain the drag reducer for the multifunctional fracturing fluid. The drag reducer has a good drag reduction effect, and the hydrophobicity, the temperature resistance, the salt resistance and the shear resistance are improved.

The invention relates to the field of equipment verification, in particular to a thermostatic bath and a thermostatic method. The constant temperature bath comprises at least one constant temperature bath unit, the magnetic stirrer is rotationally arranged at the inner bottom of the tank body, the cooling fan is arranged at the outer bottom of the tank body, the magnet is arranged on the cooling fan and rotates along with the cooling fan, the semiconductor chilling plate wraps the periphery of the tank body and the periphery of the cooling fan, and the cooling fin is attached to the semiconductor chilling plate. The size of the calorimeter temperature sensor calibrating device is reduced, the operation efficiency and the automation degree are improved, and the temperature can be uniformly controlled.

The invention discloses a brown sugar type identification device and method. The brown sugar type identification device comprises a computer and two detection mechanisms, each detection mechanism comprises an electrochemical workstation, a liquid injection module, a magnetic stirrer, a beaker, a three-electrode sensor and a sensor support, the beaker is placed on the magnetic stirrer, a magnetic stirrer of the magnetic stirrer is placed in the beaker, and the three-electrode sensor is arranged on the three-electrode sensor. The three-electrode sensor extends into the beaker, the sensor support is used for fixing the three-electrode sensor, the liquid injection module is used for injecting liquid into the beaker, the three-electrode sensor is electrically connected with the electrochemical workstation, and the computer is electrically connected with the electrochemical workstation, the liquid injection module and the magnetic stirrer. The brown sugar type can be quickly and accurately identified, and the operation is simple.

The invention discloses preparation and application of a ZnIn2S4 / amorphous MoO3-x nanodot Z system photocatalyst, and relates to the field of photocatalysis. The method is simple to operate and environment-friendly, and the prepared ZnIn2S4 / amorphous MoO3-x nanodot catalyst is excellent and stable in hydrogen production performance. The preparation method comprises the following steps: synthesizing amorphous MoO < 3-x > nanodots by using an ultrasonic chemical method, and loading the MoO < 3-x > nanodots on ZIS by using a one-pot hydrothermal method to obtain the ZM catalyst. The method comprises the following steps: weighing a certain amount of a ZM catalyst, placing the ZM catalyst in a quartz photoreactor, adding a triethanolamine aqueous solution without dissolved oxygen, introducing argon, exhausting air, and sealing the reactor; putting the reactor into a magnetic stirrer for stirring, and maintaining the temperature of the reactor through a thermostatic bath; the electron-hole separation efficiency of the composite catalyst is improved, the composite efficiency is reduced, and meanwhile, the light absorption range is expanded.

The invention discloses a liquid metal-hydrogel composite radiation protection material and a preparation method and application thereof.The preparation method comprises the steps that indium, tin and bismuth are sequentially put into a flask from low melting point to high melting point to be mixed, and glycerin is added for immersion; placing the mixture in an argon atmosphere, and stirring by using a heating type magnetic stirrer; taking out the spherical liquid metal particles from the glycerol, and finally washing and drying to obtain liquid metal alloy particles; preparing a PVA (polyvinyl alcohol)-H2O solution with the mass fraction of 15% and a PVA-DMSO (dimethyl sulfoxide) solution with the mass fraction of 15%; and a PVA-H2O solution, a PVA-DMSO solution and the liquid metal alloy particles are stirred and mixed according to the mass ratio, the mixed solution is subjected to ultrasonic treatment and then poured into a mold to be frozen into gel, and the liquid metal-hydrogel composite material is obtained. By combining the advantages of the liquid metal and the hydrogel, excellent biocompatibility, adjustable mechanical property and efficient radiation shielding capability are realized, and the hydrogel can be used as a novel lead-free radiation protection material.

The invention provides a calcium carbonate synthesis experiment device capable of controlling pH. A reaction unit is arranged in a constant temperature box; the sample reaction unit comprises a constant-temperature heating type digital display magnetic stirrer and a reaction container; the reaction container is filled with a reaction solution and a magnetic stirrer, and the reaction solution is used for simulating seawater components; the pumping unit comprises an automatic injection pump with two independent channels and is used for continuously inputting sodium carbonate and calcium chloride solutions into the reaction solution at a stable speed so as to induce precipitation of calcium carbonate; the pH titration unit comprises an automatic potentiometric titrator and is used for monitoring pH and temperature in real time, a titration solution is composed of sodium hydroxide or hydrochloric acid, sodium hydroxide or hydrochloric acid is automatically dropped into a reaction solution, and the pH of the calcium carbonate in the reaction container in the precipitation process is kept stable. According to the present invention, the pH real-time in-situ monitoring during the calcium carbonate precipitation process can be achieved, the corresponding titration program is started according to the experiment setting so as to ensure the pH stability during the calcium carbonate synthesis experiment process, and the characteristics of simple operation and process visualization are provided.

The invention discloses a charge-discharge energy-saving electro-catalysis sewage treatment method which comprises the following steps: step 1, cleaning a carbon electrode, inserting the carbon electrode into sewage as a cathode and an anode at the same time, and arranging a magnetic stirrer at the bottom of an electrochemical reaction tank; step 2, applying constant voltage or constant current to the working electrode to ensure that the voltage can degrade pollutants, the anode does not generate oxygen evolution reaction, and the cathode does not generate hydrogen evolution reaction; step 3, stopping applying voltage or current to the working electrode, monitoring open-circuit voltage, gradually reducing the open-circuit voltage, and continuously degrading pollutants by utilizing the electric energy stored by the electrode; and step 4, repeating the step 2 and the step 3 until the electrocatalytic degradation is completed. Under the condition that the removal effect is guaranteed, electric energy is saved, and about 30-90% of energy consumption is reduced; the constant-current charging catalysis step ensures that the current density is controllable, and safe production is ensured; the process is simple, does not need special equipment and materials, and is suitable for upgrading and reconstruction of existing sewage treatment systems.

The invention belongs to the technical field of water treatment, and particularly relates to a method for degrading antibiotics in water based on vacuum ultraviolet rays, which comprises the following steps: adding a sample water body containing antibiotics into a sample container of a photoreaction device, and starting a magnetic stirrer to uniformly mix liquid in the sample container under the action of rapid rotation of a magnetic stirring rotor; adding a Fenton reagent into the sample container to enable the sample water body to reach a preset reaction condition; the peristaltic pump is opened, and the reaction liquid in the sample container is pumped into the annular reaction layer under the action of the peristaltic pump and reacts under the irradiation of the detachable vacuum ultraviolet light source so as to degrade antibiotics in the sample water body.

The utility model discloses a high-pressure microcapsule filling machine and relates to the technical field of microcapsule forming devices. A positive electrode connecting wire and a negative electrode connecting wire are arranged on one side of the high-voltage generator; a measuring cup and a magnetic stirrer are arranged on the bottom frame; the magnetic stirrer is arranged at the bottom of the measuring cup; a fixed block is arranged on the bottom frame, a fixed rod is arranged on the fixed block, and a movable block is arranged on the fixed rod in a sliding fit manner. An injector is placed between the arc-shaped plates on the two sides, a needle at the bottom of the injector penetrates through the placing ring to press the injector downwards, the arc-shaped plates are driven by the connecting frames on the two sides to clamp and fix the injector, and injectors of different specifications can be clamped and fixed. Under the action of extrusion of the propeller on the push rod of the injector and electric field force, the solution in the injector drips into the solution in the measuring cup, so that microcapsules with different particle sizes can be selectively prepared according to liquid components, the magnetic stirrer can be dispersed in the generated microcapsule particles in the measuring cup, and finally the microcapsule particles with uniform size and uniform particle size can be formed. The microcapsule is spherical and has a smooth surface.

The invention belongs to the technical field of rare earth complex preparation, and discloses a six-core gadolinium-based complex, a preparation method and application of the six-core gadolinium-based complex in a magnetic refrigeration material. The preparation method provided by the invention comprises the following steps: mixing and dissolving Gd (AC) 3.6 H2O and an organic ligand H2mpcd in a mixed solution of methanol and acetonitrile according to a certain ratio, stirring for 5 minutes by using a magnetic stirrer, adding Na2CO3, continuously stirring for 2 hours, and reacting to obtain the orange blocky crystal hexanuclear gadolinium-based complex. The metal framework of the six-core gadolinium-based complex is triangular, and the six-core gadolinium-based complex has a magnetic refrigeration effect and can be applied to magnetic refrigeration materials.

A system and method of testing pre-formed particle gels in an artificial fracture system may include introducing a suspension including a pre-formed particle gel into a testing device that includes an artificial fracture setup with a plurality of fracture model units. The system may be configured to inject pre-formed particle gels into an accumulator with magnetic stirrers first and then into a series of fracture model units configured to receive a fluid through a flow channel and, change the flow channel in a transverse direction relative to the direction of the fluid flow.

The invention discloses a micro-nano-scale ceramic particle reinforced high-chromium cast iron-based composite material and a preparation method and application thereof.The preparation method comprises the steps that micron ZTA ceramic particles are subjected to acid pickling, sensitization treatment and activation treatment through SnCl2 and PdCl2 respectively, then the ZTA ceramic particles are chemically plated with NiMo metal coatings through a magnetic stirrer, the plating solution is alkaline, and the plating solution is subjected to acid pickling, sensitization treatment and activation treatment; uniformly mixing NiMo ZTA, V powder, high-chromium cast iron powder and alcohol on a ball mill, and injecting into a graphite mold; under the action of pressure, the composite material is prepared through a spark plasma sintering technology, and the dispersed V and carbon in a matrix are subjected to an in-situ reaction to generate nano VC ceramic particles. The micron ZTA ceramic particles provide excellent wear resistance, and meanwhile, the nano VC ceramic increases the strength and hardness of the matrix, so that the micro-nano scale ceramic particle reinforced iron-based composite material wear-resistant part is obtained.

The invention relates to the technical field of laboratory automation, and discloses an automatic platform suitable for a laboratory, which comprises a sample processing module, a detection module, a control module and a software module. According to the automatic platform suitable for the laboratory, the sample processing module optimizes operation of a pneumatic control system, a high-precision pump and a magnetic stirrer through a PID control algorithm, when a sample is loaded, the PID algorithm adjusts the pressure of an air cylinder through the pneumatic control system, once it is detected that the position of the sample deviates from the target position, the PID algorithm will calculate the pressure value needing to be adjusted, and the pressure value needs to be adjusted. The pneumatic control system adjusts the pressure of the air cylinder according to the pressure until the sample is accurately in place, similarly, in the liquid separation process, the PID algorithm adjusts the liquid separation amount by controlling the rotating speed and the stroke distance of the pump, and accurate liquid separation is ensured; in the mixing process, the PID algorithm ensures that samples are uniformly mixed by controlling the speed of the magnetic stirrer, personal errors are reduced through the accurate control, and the consistency and repeatability of experiments are improved.

The invention discloses a high-performance malachite green adsorbent as well as a preparation method and application thereof, and belongs to the technical field of preparation of malachite green adsorbents. The method comprises the following steps: with a carbon-based adsorbent as a raw material and an ethanol aqueous solution and a sodium hydroxide solution as modifiers, heating and stirring on a magnetic stirrer to form a turbid liquid; and further carrying out solid-liquid separation on the turbid liquid, washing a solid product with deionized water until the solid product is neutral, and drying. The prepared high-performance malachite green adsorbent is used for treating malachite green printing and dyeing wastewater, and compared with a carbon-based adsorbent raw material, the adsorption performance is effectively improved. The preparation method of the high-performance malachite green adsorbent is simple, rapid, low in energy consumption and good in environmental protection property.

The invention discloses a glass etching device for laser induction and a fluoride-free etching method, and belongs to the technical field of glass etching.The etching device comprises an etching tank and an oil bath heating device, the etching speed can be increased by heating alkaline fluoride-free etching liquid, and the etching efficiency is improved. A composite stirring system of a magnetic stirrer and a stirring paddle can enable the fluoride-free etching liquid to circularly flow, so that the etching uniformity is improved, and the etching reaction is more favorably and stably carried out; the fluoride-free etching method adopts fluoride-free etching liquid, does not contain hydrofluoric acid, is safe and environment-friendly, and can avoid deterioration of through hole characteristics. Under the action of the fluorocarbon surfactant, the etching liquid has excellent wettability, and sodium hydroxide and potassium hydroxide in the etching liquid can perform high-selectivity etching on the glass after laser induction; the glass subjected to fluoride-free etching is high in surface smoothness and higher in through hole roundness, the surface and the inner wall of the through hole are smooth, the roughness of the inner wall of the through hole is smaller than 1 micron, the taper of the through hole is smaller, and a good etching effect is achieved.

The invention discloses a preparation method and application of a methane dry reforming catalyst prepared through ethanol plasma modification, particularly relates to a catalyst for converting two main greenhouse gases of CO2 and CH4 into synthesis gas with the ratio of CO to H2 being 1, and belongs to the field of waste gas treatment technologies and environment-friendly catalytic environments. The preparation method comprises the following steps: firstly, adding a proper amount of H2O into metered Ni (NO3) 2.6 H2O (the mass percent of an active component Ni in the catalyst is 10%) to dissolve the Ni (NO3) 2.6 H2O to obtain a transparent solution; adding the weighed and metered MCM-41 molecular sieve carrier into the obtained transparent solution, uniformly stirring to obtain mixed slurry, and dipping for 45 minutes; drying in a water bath in a constant-temperature heating magnetic stirrer at 80 DEG C, taking out, and drying in a drying oven at 110 DEG C for 12 hours; and putting the obtained product into a radio frequency plasma processing area for activation, the discharge power of the plasma is 200W, the processing atmosphere is EA, and the Ni / M-P (EA) catalyst is obtained. The Ni / M-P (EA) catalyst prepared by the invention has excellent catalytic activity, stability and carbon deposition resistance, and the preparation method is simple in process, easy to operate, short in time consumption and low in cost.

A preparation method of multi-component mixed gas foam concrete belongs to the technical field of concrete.The preparation method comprises the following steps: preparing a nanoparticle modified foaming liquid: adding a surfactant into water, uniformly stirring to obtain a surfactant solution, adding nanoparticles into the surfactant solution, and stirring with a magnetic stirrer to obtain the nanoparticle modified foaming liquid; then adding a foam stabilizer and uniformly stirring to obtain a modified foaming solution; starting a foaming machine, and introducing foaming liquid to generate stable mixed gas foam of carbon dioxide and nitrogen; stirring the cement and the water to obtain uniform cement paste; adding the prepared mixed gas foam into cement slurry, continuously stirring, filling the mixed gas foam concrete slurry into a mold, waiting for solidification, demolding, and performing standard curing to obtain the mixed gas foam concrete. The prepared carbon dioxide mixed gas foam is more stable, the strength of the foam concrete is higher, and a new scheme is provided for carbon sequestration and emission reduction while the strength of the foam concrete is improved.

The invention relates to a construction method of an acousto-optic catalytic reactor for removing tetracycline through photoactive MOF (Metal Organic Framework). A photoactive MOF material is synthesized through a solvothermal method; adding the synthesized MOF material and a tetracycline aqueous solution into a quartz reactor, and stirring for 30 minutes in a darkroom; starting circulating condensate water, a magnetic stirrer, ultrasonic waves and a light source, and carrying out acousto-optic catalysis to remove tetracycline reaction; sampling at certain time intervals, filtering, testing, and calculating the removal efficiency of tetracycline. According to the acousto-optic catalytic reactor constructed by the invention, the MOF material has excellent light absorption and photo-generated charge splitting performance, and ultrasonic catalysis is cooperated, so that the contact between MOF and tetracycline molecules is enhanced, and efficient removal of tetracycline is realized. The acousto-optic catalytic reactor disclosed by the invention is low in cost, simple in structure, high in efficiency and high in speed, and has good stability and repeatability. According to the scheme, the problem of low tetracycline removal efficiency is solved, an efficient and environment-friendly solution is provided for environmental protection and ecological restoration, and the method has wide application prospects.

The application discloses a heating magnetic stirrer, a stirring driving device, a temperature measuring device and a temperature control device, wherein the stirring driving device is used for mixing the solution in a beaker and making the temperature distribution of the solution in the beaker more uniform; the temperature measuring device comprises a solution temperature measuring device and a heating table temperature measuring device; the solution temperature measuring device is used for measuring the solution temperature in the beaker and taking the solution temperature as a feedback amount of a main ring; the heating table temperature measuring device is used for measuring the temperature of the heating table and taking the temperature as a feedback amount of a secondary ring; and the temperature control device adopts a fuzzy-serial PID control mode and is used for precisely controlling the solution temperature in the beaker. The heating magnetic stirrer can realize high-precision control of the medium solution temperature, has a small overshoot amount and good stability, and is suitable for different medium solutions.

The utility model discloses a temperature control heating device which comprises a magnetic stirrer, a temperature sensor used for detecting the temperature of a heating medium is arranged on a first fixing frame, an electric heater used for heating the heating medium is arranged on a second fixing frame, and a temperature controller is arranged on the side portion of the magnetic stirrer. Through the design of the lifting mechanism, the electric heater, the temperature controller, the temperature sensor and other structures, heating media in the container can be heated through the electric heater, stirring of the heating media in the container is achieved through the magnetic stirrer, the heating media can be evenly heated, and the temperature of the heating media is detected through the temperature sensor; an electric signal of the temperature of the heating medium detected by the temperature sensor is obtained through the temperature controller, and the electric heater is controlled to start and stop through the temperature controller, so that the situation that the temperature of the heating medium is too high or too low, and the heating effect on liquid in the reagent tube is affected can be prevented.

The utility model relates to the technical field of stirrers, in particular to a magnetic stirrer. According to the technical scheme, the magnetic stirrer comprises a magnet assembly and a heating assembly, and a heat insulation assembly is arranged between the magnet assembly and the heating assembly. The magnetic stirrer has the advantages that the heat insulation assembly can reduce the probability that the heating function affects work of the magnet, and the working efficiency of the magnetic stirrer is improved.

The invention aims to disclose a preparation method of a high-nickel ternary positive electrode material coated with a high-molecular polymer. The preparation method comprises the following steps: (1) mixing and stirring the high-molecular polymer and an organic solvent; (2) slowly adding high-nickel ternary positive electrode material powder in ultrasonic treatment, and continuously performing ultrasonic treatment, so that the ternary positive electrode powder is in full contact with the conductive polymer; (3) heating and stirring by using a magnetic stirrer, and polymerizing; and after the polymerization is completed, washing and filtering, and then carrying out vacuum drying to obtain the high-nickel ternary positive electrode material coated with the high-molecular polymer. The high-stability lithium battery ternary positive electrode material coating is synthesized through the method, the method is simple and effective, a coating layer with the uniform surface is formed, interface ion transmission is improved, the problem that lithium ions are diffused slowly due to the fact that CEI is too thick at the extremely cold temperature is solved, and the electrochemical performance of a battery at the extremely cold temperature is effectively improved.

The invention discloses a preparation method of a halloysite nanotube adsorption material with sulfonic groups polymerized on the surface, and belongs to the technical field of wastewater treatment materials, the preparation method comprises the following steps: S1, adding 5.0 g of halloysite nanotubes and 5 mL of gamma-methacryloxypropyltrimethoxysilane into 100 mL of toluene; s2, in a magnetic stirrer, condensing and refluxing at 120 DEG C for 10 hours, cooling, filtering, washing with toluene and ethanol for multiple times to remove unreacted KF570, and drying a product in a vacuum drying oven at 60 DEG C for 8 hours to obtain a KH570 modified halloysite nanotube; s3, weighing 1.0 g of HNTs-KH570 as a raw material, dispersing the HNTs-KH570 in 80 mL of distilled water, adding 5.0 g of 2-acrylamide-2-methylpropanesulfonic acid, performing uniform ultrasonic dispersion, and continuously stirring at the temperature of 70 DEG C; and S4, adding 0.15 g of ammonium persulfate into 20 mL of distilled water, and fully stirring to completely dissolve the ammonium persulfate. The adsorption performance of the halloysite nanotube to methylene blue is remarkably improved through sulfonic acid group modification, and the adsorption capacity is improved by 270%.

The invention discloses a method for detecting moisture of filler-containing epoxy resin. The method comprises the following steps: step 1, weighing a sample: weighing 4-8g of filler-type epoxy resin to be detected; 2, dissolving a sample: adding 10-20g of an organic solvent, and dissolving and mixing the filler type epoxy resin to be detected; 3, sample dispersion: stirring the mixed solution in the step 2 for 10-30 minutes for uniform dispersion; step 4, extracting clear liquid: putting the solution which is uniformly dispersed in the step 3 into a high-speed centrifugal machine to be centrifugally dispersed for 30 to 60 minutes, and extracting supernate; 5, moisture detection, wherein the content of trace moisture in the supernate is detected. In the detection process, components influencing moisture detection result errors in the filler type epoxy resin are effectively removed only by using a balance, a magnetic stirrer, a centrifugal machine and other instruments commonly used in a laboratory, and then the moisture content in supernate is detected through a high-precision analysis instrument, so that the purpose of detecting the trace moisture content in the filler type epoxy resin is achieved. The detection process is easy to operate and the detection result is accurate.

The invention discloses a solid electrolyte using an electrostatic spinning fiber membrane as a matrix and a preparation method and application thereof, and the preparation method of the solid electrolyte specifically comprises the following steps: (1) sequentially dissolving PVDF powder and commercial tetragonal phase BaTiO3 (BTO) powder in a mixed solvent of DMF and THF, and uniformly stirring with a magnetic stirrer to obtain a PVDF / BTO solution; and (2) carrying out electrostatic spinning on the PVDF / BTO solution to prepare a fiber membrane, drying, and carrying out a solution pouring method to prepare the composite solid electrolyte film. Compared with the prior art, the prepared solid electrolyte has excellent cycle performance, the ion transference number of the solid electrolyte is greatly increased, and the solid electrolyte has good lithium metal negative electrode compatibility.

The utility model discloses a magnetic stirring system which comprises a magnetic stirrer, a stirring vessel, a stirring mechanism and a mounting mechanism, the stirring mechanism is used for forming a rotating structure in the stirring vessel, and the mounting mechanism is used for forming a movable structure on the stirring mechanism. The stirring rotor is inserted into the inner cavity of the stirring vessel in a sliding mode, the bottom end of the limiting rod is attached to the bottom of the inner wall of the stirring vessel, the stirring rotor is arranged above the bottom of the inner wall of the stirring vessel, and along with operation of the magnetic stirrer, the stirring rotor is driven to rotate through the magnetic action of the stirring rotor and magnetic lines of force; the connecting rod and the fixing block are driven to rotate in the inner cavity of the fixing seat, so that the stirring rotor stably rotates at the bottom of the inner cavity of the stirring vessel, a solution in the inner cavity of the stirring vessel is stirred, a gap is formed between the stirring rotor and the bottom of the inner wall of the stirring vessel, friction between the stirring rotor and the stirring vessel is reduced, and damage to the stirring rotor is reduced.

The invention relates to the technical field of electrolyte, in particular to a thioether cross-linked solid polymer electrolyte membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: taking N, N-dimethylformamide, respectively adding 3, 6-dioxa-1, 8-octane dithiol and triglycidyl isocyanurate, and uniformly stirring to obtain a mixed solution; adding bis (trifluoromethylsulfonyl) imide lithium into the mixed solution, putting magnetons on a magnetic stirrer, and completely dissolving the magnetons to obtain a precursor solution; and pouring a proper amount of the precursor solution into a polytetrafluoroethylene mold, spreading, and carrying out cross-linking polymerization in a blast oven to form the film. The three-dimensional thioether cross-linked network structure has a large number of weakly coordinated thioether groups, dissociation of lithium salt can be promoted, a large number of free Li < + > is generated, the number of Li < + > is increased, meanwhile, the crystallinity of a polymer is remarkably reduced, the ionic conductivity is improved, the mechanical stability of a film can be improved, and the service life of a battery is effectively prolonged.