449 results about "Nitrogen atmosphere" patented technology

The invention belongs to the technical field of nickel electrode slurry preparation, discloses a preparation process of ultra-fine particle size roll-printed nickel electrode slurry for an ultra-high capacity MLCC, and aims to solve the problems that in the prior art, ultra-fine nickel powder is easy to oxidize, the cost of covering nickel nitride powder is high, a covering layer is easy to damage and agglomerate during dispersion, and the performance of the slurry is poor. The method comprises three steps of raw material pretreatment, synchronization of material dispersion and nitridation, post-treatment and nitrogen protection, wherein the pretreatment is used for removing impurities and preventing oxidation, dispersion and nitridation are carried out synergistically through a sand mill and an ultrahigh-pressure homogenizer in a graded regulation and control mode, the post-treatment comprises filtering, inspection and double-layer vacuum packaging, the raw materials are prepared according to a specific proportion, key parameters are precisely regulated and controlled, and finally the slurry is prepared. Roll printing adaptability and co-firing requirements are met, independent nitridation and reduction procedures are omitted, cost is reduced, slurry uniformity, dispersion stability and MLCC reliability are improved, and large-scale mass production can be achieved.

The invention relates to the technical field of medicine analysis and detection, and particularly discloses a method for detecting the content of protein in a 3D-MLA adjuvant, which comprises the following steps: (1) preparing a test solution: firstly dissolving the 3D-MLA adjuvant by using a hydrochloric acid solution, performing 300-600W ultrasonic treatment for 2-5min, centrifuging 10000-13000g for 4-7min, and taking supernate; adding a compound enzyme into the supernate for enzymolysis; then adding concentrated hydrochloric acid, uniformly mixing, hydrolyzing for 20 + / -2 hours in a nitrogen atmosphere at 105-115 DEG C, blow-drying, and dissolving with a hydrochloric acid solution to obtain a test sample stock solution; adding a derivatization reagent into the test sample stock solution, and carrying out derivatization treatment, extraction and dilution to obtain a test sample solution; and (2) high performance liquid chromatography determination. According to the detection method provided by the invention, the residual quantity of the host cell protein in the 3D-MLA can be rapidly and accurately determined, and the quality control of the 3D-MLA is realized.

A perfluoroelastomer according to the present disclosure satisfies requirement 1 and has a crosslinkable group. Requirement 1: When the perfluoroelastomer is heated in a nitrogen atmosphere from a starting temperature of 40°C at a heating rate of 10°C / min from 40°C to 90°C, then held at 90°C for 120 minutes, then heated at a heating rate of 1°C / min from 90°C to 200°C, then held at 200°C for 240 minutes, then heated at a heating rate of 1°C / min from 200°C to 305°C, and held at 305°C for 720 minutes, the weight loss is 1.8 mass% or less.

The invention relates to the field of electrode materials, in particular to a preparation method of a silicon-carbon composite electrode material. The method comprises the following steps: carrying out crushing pretreatment on the silicon-containing agricultural residues, and mixing the silicon-containing agricultural residues with tetraethyl orthosilicate according to a mass ratio of (3-5): 1; raising the temperature to 200-800 DEG C at the speed of 5 DEG C / min in a nitrogen atmosphere, and performing constant-temperature pyrolysis for 30-60 minutes; in the pyrolysis process, the TEOS is decomposed to generate a SiO2 nano-template to regulate and control a pore structure, part of the SiO2 nano-template is reduced into SiO nano-particles, and a SiO (at) C core-shell structure material with microporous and mesoporous graded pores is formed in situ; the product, conductive carbon and polyvinylidene fluoride are prepared into slurry according to the ratio of (6-7): (1.5-3): (1-1.5), the slurry is coated on activated carbon cloth, and the activated carbon cloth is freeze-dried to prepare the electrode. According to the preparation method, through design of the green activating agent, synchronous silicon-based compounding, pore regulation and control and pyrolysis process optimization, the defects of the traditional technology in the aspects of environmental protection, pore regulation and control accuracy and functional compounding are effectively overcome, and the electrochemical performance of the agricultural residue-based electrode material is remarkably improved.

The invention discloses a high-refractive-index photo-thermal dual-curing optical adhesive and a preparation method thereof, and belongs to the technical field of high polymer materials, and the preparation method comprises the following steps: S1, preparation of high-refractive-index resin: placing biphenyl-4, 4 '-dithiol in a nitrogen atmosphere reaction kettle, adding a free radical thermal initiator, heating to 180-200 DEG C, reacting for 1-2 hours, and cooling to room temperature to obtain the high-refractive-index resin; dropwise adding alkenyl resin under the protection of nitrogen, stirring, reacting for 1-2 hours after dropwise adding, and cooling to room temperature to obtain high-refractive-index resin; s2, preparation of the optical adhesive: mixing the alicyclic epoxy resin, the high-refractive-index resin, the toughened resin, the liquid epoxy resin, the cationic photoinitiator and the cationic thermal initiator, and uniformly stirring in a dark place to obtain the adhesive. The problems that a traditional optical adhesive is poor in optical performance stability and unbalanced in mechanical and optical performance are solved. The application potential of preparing the high-performance optical adhesive is realized.

The application belongs to the field of organic synthesis, and particularly relates to a synthesis method of 2-(3,3-dimethylbutyl)pyridine. 2-vinylpyridine, brominated tertiary butane, a mixed solution of dimethyl ether and isopropyl ether as a reaction system solvent, nickel iodide as a nickel salt, bipyridine as a ligand, dicyclohexylmethylamine as a base in the system, 2,6-dimethyl-3,5-diethyl-1,4-dihydropyridine as a reducing agent, a photocatalyst 2,4,5,6-tetrakis(9 ‑ Carbazole) - m-phenylenedinitrile, under the condition of room temperature and nitrogen atmosphere, a reduction cross-coupling reaction is used to synthesize 2-(3,3-dimethylbutyl)pyridine. The application uses inexpensive nickel metal as a catalyst, constructs a cross-coupling reaction of carbon-carbon bond, and has the advantages of mild reaction condition, high economy and the like.

The invention discloses a monatomic / nitrogen-doped carbon sphere material and a preparation method and application thereof, and relates to the technical field of electrochemical detection.The preparation method comprises the following steps that glucose and hexadecyl trimethyl ammonium bromide are added into deionized water to be subjected to a hydrothermal reaction, and carbon spheres are obtained; mixing, grinding and calcining the carbon spheres and urea to obtain nitrogen-doped carbon spheres; and adding a metal salt solution into the nitrogen-doped carbon sphere suspension, stirring, filtering, washing, drying, and finally calcining in a nitrogen atmosphere to obtain the monatomic / nitrogen-doped carbon sphere material. The invention also discloses the monatomic / nitrogen-doped carbon sphere material prepared by the method and application of the monatomic / nitrogen-doped carbon sphere material in electrochemical detection of organic pesticides. According to the nitrogen-doped carbon sphere, the single metal atoms are anchored on the vacancies on the nitrogen-doped carbon sphere, so that the sensitivity, the detection limit, the selectivity, the stability and the anti-interference capability of the nitrogen-doped carbon sphere when the nitrogen-doped carbon sphere is used for electrochemical detection of organic pesticides are remarkably optimized, and the nitrogen-doped carbon sphere has important practical application value.

This invention relates to a method for synthesizing N-H functionalized carbazole products based on Fe catalysis at room temperature and pressure. The method involves mixing α-aryl-α-diazo ester with carbazole or a carbazole derivative in an organic solvent, adding an Fe catalyst and additives, and reacting at room temperature and pressure to obtain the N-H functionalized carbazole product. This invention uses metallic Fe as a catalyst to react α-aryl-α-diazo ester to generate α-(N-carbazole)-α-aryl ester compounds under nitrogen atmosphere at room temperature and pressure. It also offers a wider range of selectable substrates and, compared to traditional synthesis methods, has many advantages such as high yield, simple conditions, low waste emissions, simple reaction equipment, and ease of industrial production.

The application relates to the technical field of organic compound synthesis, and particularly provides a preparation method of a cyclopropane compound. gem The dichloro compound is used as raw material, a piezoelectric material, a metal reducing agent and an additive are added under a nitrogen atmosphere, a mechanical grinding method is used for reaction, and the reaction solution is subjected to post-treatment to obtain the cyclopropane compound. The method is simple in operation and mild in conditions, the raw material and reagent are cheap and easy to obtain and environment-friendly, a large amount of solvent or a high-cost catalyst does not need to be used, and the conversion can be successfully realized. In addition, the preparation method has good yield and functional group tolerance, is suitable for scale-up production, has a good industrial application prospect, and can be widely used in the fields of medical raw materials, intermediates and fine chemical synthesis.

Device for producing a solid cryogenic abrasive from water, characterized in that the cryo-tube and loading unit form a single unit, wherein one or more spray nozzle blocks, equipped with identical or different interchangeable spray nozzles, are arranged in the cone of the cryo-tube such that the water can be sprayed from below into a cold nitrogen atmosphere of the cryo-tube, and the amount of nitrogen required for ice formation can be introduced from nitrogen nozzles attached to the tube and the lid, and the frozen water droplets immediately fall from the cryo-tube into the loading unit for absorption into the transport gas stream, assisted by the gas pressure generated during freezing.

This invention discloses an automated system and method for determining the trace total acid value of jet fuel. The system includes a sample moving unit, a titration unit, a nitrogen control unit, and a jet fuel total acid value determination unit. The sample moving unit moves the titration cup containing the sample below the titration unit. The nitrogen control unit maintains a nitrogen atmosphere inside the titration cup. The titration unit includes a porous burette, a burette tube, a photometric electrode, and a temperature electrode. The porous burette seals the titration cup. The titration unit injects titrant, mixed solvent, and mixed titration solvent into the titration cup, and determines the titration endpoint using the photometric and temperature electrodes. The jet fuel total acid value determination unit integrates the data from the titration unit to calculate the jet fuel total acid value. This invention eliminates endpoint errors that may result from subjective human judgment using manual indicators, and overcomes the need for machine vision technology, which requires the construction and intelligent training of a dataset of titration endpoint color images, in specialized instrument methods.

The invention relates to the field of electrocatalytic CO2 reduction reaction catalysts, and discloses a nitrogen-doped carbon-based monatomic catalyst and a preparation method and application thereof.The preparation method comprises the steps that zinc salt is dissolved in absolute methanol, and a metal salt solution is obtained; the preparation method comprises the following steps: dissolving 2-methylimidazole in absolute methanol to obtain a ligand solution; mixing the metal salt solution and the ligand solution for liquid phase reaction to obtain a ZIF-8 precursor; a nickel source and a ZIF-8 precursor are placed on the upstream and the downstream of a tubular furnace respectively and calcined in the nitrogen atmosphere, metal particles are removed through acid pickling after cooling, and the nitrogen-doped carbon-based monatomic catalyst is obtained. Nickel atoms are confined in a ZIF-8 precursor by adopting a steam blowing and confinement method, and the nitrogen-doped carbon-based monatomic catalyst with a nickel monatomic-nitrogen coordination structure is formed after calcination, so that the size of the monatomic catalyst is optimized, a Ni-N coordination active center is introduced, and the selectivity of producing CO by reducing CO2 through electro-catalysis is improved.

The present invention addresses the problem of providing a polyester film which has excellent material recyclability. A polyester film according to the present invention comprises: a base material film that contains a polyester resin; and a functional layer that is provided on at least one surface of the base material film. The self-hydrolysis resistance parameter SHS represented by formula 1 satisfies 1.50 or less.　Formula 1: SHS = 0.245([IV]f -1.47 - [IV]i -1.47) (In the formula, [IV]i represents the limiting viscosity IV of the polyester film. [IV]f represents the limiting viscosity IV after heat-treating the polyester film at 300°C for 2 hours in a nitrogen atmosphere.)

A separator for a non-aqueous secondary battery contains: a porous layer that is provided on only one side of the porous substrate, and that contains a resin having at least one bonding group selected from an amide bond, an imide bond, and a sulfonyl bond, in which, in the porous substrate, an absolute value of a difference between a temperature of an endothermic peak observed at 120° C. to 145° C., in a temperature raising process 1, and a temperature of an endothermic peak observed at 120° C. to 145° C., in a temperature raising process 2, is 1.50° C. or higher in DSC measurement when the temperature raising process 1 of continuously raising the temperature from 30° C. to 200° C. at a temperature change rate of 5° C. / min in a nitrogen atmosphere, and the temperature raising process 2 of lowering the temperature from 200° C. to 30° C. and raising the temperature from 30° C. to 200° C., are performed.

The application discloses a kind of eluent and its preparation method and application, preparation method includes: adding potassium methoxide methanol solution to the trimethylolpropane in molten state, after stirring, vacuumizing, then droping glycidol monomer, after reaction, add methanol, dry, obtain hyperbranched polyglycerol ether;Add carbonyl imidazole to the N,N-dimethylformamide solution of saturated fatty acid, after stirring and mixing, drop to the N,N-dimethylformamide solution of hyperbranched polyglycerol ether, reaction is heated in nitrogen atmosphere, after reaction, the product is treated, obtain temperature-sensitive hyperbranched polyglycidol ether eluent.The eluent prepared in the application can greatly reduce the treatment cost of elution waste liquid while efficiently removing heavy metals.

The application discloses tar-based nitrogen-doped graphene oxide and a preparation method and application thereof. The preparation method comprises the following steps: 1) uniformly mixing pine nut shell tar powder, nano magnesium oxide and KOH according to a mass ratio of 1:(6-8):(1-2) to prepare a precursor; 2) placing the precursor into a tube furnace to perform carbonization under a nitrogen atmosphere, adopting two-stage heating, the first stage is to heat from room temperature to 300 DEG C and keep the temperature, the second stage is to heat to 900 DEG C, after keeping the temperature, cooling to room temperature; 3) drying the obtained solid product after acid pickling. The tar-based nitrogen-doped graphene oxide prepared by the application exhibits a good graphene structure, a large specific surface area, and rich pore structure and total pore volume. Meanwhile, the thin-layer graphene structure and the number of graphene layers are directly observed by HRTEM. In addition, the tar-based nitrogen-doped graphene oxide has a good double-layer capacitance and is an excellent supercapacitor material.

The invention discloses a preparation method and application of a cobalt-nitrogen-doped mesoporous carbon catalyst, and belongs to the technical field of catalyst preparation, and the preparation method comprises the following steps: mixing and grinding glucose and an SBA-15 mesoporous molecular sieve, pyrolyzing in a nitrogen atmosphere, soaking the obtained product in hydrofluoric acid to remove an SBA-15 template, alternately centrifuging with water and ethanol to obtain a precipitate, and drying to obtain the cobalt-nitrogen-doped mesoporous carbon catalyst. Mesoporous carbon is obtained; the preparation method comprises the following steps: respectively dissolving phenanthroline and cobalt chloride hexahydrate in ethanol, and mixing to form a Co-phen solution; and soaking the obtained mesoporous carbon in a Co-phen solution, evaporating the solvent after soaking, grinding into powder, and carrying out heat treatment in a nitrogen atmosphere to obtain the cobalt-nitrogen doped mesoporous carbon catalyst. The cobalt-nitrogen-doped mesoporous carbon catalyst shows excellent oxygen reduction catalytic activity under the alkaline condition, the half-wave potential reaches 0.873 V and is close to a 4-electron transfer path, and the stability and methanol tolerance are superior to those of a commercial Pt / C catalyst.

This invention provides an intermediate impurity of roxadustat and a method for preparing the impurity. The method for preparing roxadustat impurity I includes: dissolving compounds II and III in an organic solvent, and conducting a coupling reaction under a nitrogen atmosphere and a reaction temperature of 40–60°C in the presence of a base to obtain roxadustat impurity I. This preparation method features mild reaction conditions, simple operation, low time cost, high yield, and high product purity. It can efficiently obtain sufficient quantities of high-purity impurity reference standards, playing a positive role in the quality control of roxadustat intermediates and roxadustat active pharmaceutical ingredients, and has good application prospects.

The invention provides a preparation method of a perovskite precursor solution and an anti-radiation perovskite thin film, and belongs to the technical field of perovskite materials, and the method comprises the following steps: sequentially adding FAI, SnI2, SnF2 and EDAI2 into an usnic acid / alpha-tocopherol solution, carrying out magnetic stirring, then adding 1, 4-divinyl perfluorobutane and AIBN, continuing stirring, carrying out ultrasonic treatment, and filtering to obtain the perovskite precursor solution; and dropwise adding an arginine-PEDOT: PSS solution on the pretreated ITO substrate, carrying out spin coating, annealing treatment and cooling, further dropwise adding a perovskite precursor solution, carrying out spin coating, dropwise adding anhydrous chlorobenzene during spin coating, carrying out annealing treatment in a nitrogen atmosphere after spin coating is completed, and cooling to room temperature to prepare the anti-radiation perovskite thin film. According to the method, the stability of the film under the irradiation condition can be improved while defect and non-radiation compounding can be reduced.

The invention provides a DFDNTN / TNAZ eutectic substance and a preparation method thereof, DFDNTN and TNAZ are weighed in proportion in an alumina crucible of DSC (Differential Scanning Calorimetry) according to the total amount of 5mg, a test is carried out under the conditions that nitrogen is used as an atmosphere and the heating rate is 10k / min in DSC thermal analysis, the temperature is raised to 150 DEG C which is higher than the melting point of any single component, and one sample is circulated for three times, so that the samples can be uniformly mixed. DSC curves of different heating rates are obtained. When the ratio of DFDNTN to TNAZ is 4: 6, the melting point is 88 DEG C. According to the method, the eutectic point can be quickly found by using a trace amount of samples, and the eutectic substance and the high-energy component (RDX) are mixed by adopting a micro-heat thermal instrument, so that the thermal behavior between the eutectic substance and the high-energy component is researched. The melting point of the eutectoid prepared by the invention is reduced, so that the energy characteristic, the mechanical sensitivity and the decomposition temperature of the eutectoid are between those of two single components, and the volatility of TNAZ can be effectively relieved.

The invention discloses a preparation method of a high-strength and high-toughness 17-4ph material. The preparation method comprises the steps of powder treatment, mixing, injection molding, degreasing, sintering and heat treatment. The preparation method comprises the following steps: pretreating fine powder in nitrogen to obtain nitrogen-containing fine powder, mixing the nitrogen-containing fine powder with coarse powder, then carrying out mixing, injection molding and degreasing, and finally carrying out high-temperature sintering and solid solution aging treatment in a nitrogen atmosphere. The prepared 17-4ph material has the excellent comprehensive performance that the relative density is larger than or equal to 97%, the hardness is larger than or equal to 40 Hrc, the tensile strength is larger than or equal to 1200 MPa, the yield strength is larger than or equal to 1000 MPa, and the ductility is larger than or equal to 20%, and the 17-4ph material is suitable for being applied to high-end medical instruments such as surgical robots.

The application relates to a preparation method of Mg and W double-element co-modified ultra-high-nickel binary positive electrode material, in particular to Mg and W double-element co-modified high-nickel binary positive electrode material. 0.01 (Ni x Mn y )W z O2, wherein x the value of x is 0.9-0.95, y the value of y is 0.05-0.1, z the value of z is 0.003-0.006. The method comprises the following steps: (1) preparing a nickel and manganese metal salt aqueous solution, a mixed alkali aqueous solution and a reaction bottom solution; (2) respectively adding the metal salt aqueous solution and the mixed alkali aqueous solution into the bottom solution at a certain flow rate to perform a constant-temperature precipitation reaction in a nitrogen atmosphere; (3) after the precipitation reaction is completed, cooling to room temperature, filtering, washing and drying the precursor; (5) after the dried precursor is mixed with metered lithium salt, magnesium oxide and tungsten trioxide, high-temperature solid-phase reaction is performed in an oxygen atmosphere to obtain the Mg and W double-element co-modified ultra-high-nickel binary positive electrode material. The Mg and W double-element co-modified high-nickel binary positive electrode material prepared by the method has a specific capacity of 179.19 mAh / g after 100 cycles at a 0.5C rate, a capacity retention rate of 93.1% or above, and good cycle and rate performance.

The application discloses a production process of a locally hardened complex component and relates to the technical field of heat treatment, and specifically comprises the following steps: S1, placing a to-be-heated part of a basic component in an induction heating ring for induction heating; S2, after the induction heating is completed, spraying a quenching liquid on the heated part, taking out the part after cooling to room temperature, and low-temperature tempering to obtain a quenched component; S3, grinding, degreasing and drying the quenched component, coating a surface treatment liquid on the surface of the quenched component, solidifying, and inductively cladding under a nitrogen atmosphere to obtain a locally hardened component; according to tests, the locally hardened complex component provided by the process has high hardness and no internal cracks.

The invention discloses a phosphorus-containing large-volume side group low-dielectric polyimide film and a preparation method thereof, and belongs to the technical field of polyimide films. The preparation method of the polyimide film comprises the following steps: dissolving a diamine compound and other diamine monomers in an organic solvent; adding a dianhydride monomer, and reacting to obtain a polyamide acid solution; defoaming the polyamide acid solution, and salivating to a mirror surface steel belt through a die head to form a self-supporting film; the self-supporting film is subjected to longitudinal drawing and transverse drawing imidization treatment at the same time, and the polyimide film is obtained. The preparation process of the diamine compound comprises the following steps: mixing, heating and stirring 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, 4-aminoacetophenone, 2-(1-methylpropyl) aniline and p-toluenesulfonic acid in a nitrogen atmosphere; and cooling the reactant, placing in methanol, heating in water bath, crystallizing, and drying to obtain the diamine compound. The polyimide film has low dielectric constant and dielectric loss, has excellent mechanical and thermodynamic properties, and can be applied to the field of 5G communication.

This invention belongs to the field of polymer materials technology, specifically relating to a method for producing environmentally friendly polycarbonate. The method includes: S1 adding diphenyl carbonate, isosorbide, and bisphenol fluorene to a reaction vessel under a nitrogen atmosphere, followed by mixing to obtain a mixture; S2 adding a titanium-silicon molecular sieve composite catalyst to the mixture and performing a transesterification reaction, followed by a polycondensation reaction; after the reaction, the product is poured off while hot and cooled to obtain an intermediate product; S3 mixing and stirring the intermediate product, pyridine-type ionic liquid-modified hydrotalcite, rubber elastomer, compatibilizer, and antioxidant to obtain a premix; S4 melt-extruding the premix in a twin-screw extruder, followed by stretching, water cooling, air drying, pelletizing, and final drying to obtain environmentally friendly polycarbonate. The polycarbonate produced by this method not only has low color but also excellent impact resistance, heat resistance, and flame retardancy.

A gallium or indium doped S-1 molecular sieve encapsulated metal catalyst, its preparation method and application, especially in the application of low carbon alkane dehydrogenation. First, a gallium or indium doped S-1 molecular sieve slurry is prepared by a hydrothermal method, then the above catalyst is prepared through the steps of drying, impregnation, drying, dry gel crystallization reaction, calcination under nitrogen atmosphere, oxidation calcination under air atmosphere, and hydrogen atmosphere reduction. As a specific embodiment of catalyst performance evaluation, the above catalyst is evaluated for its performance in low carbon alkane dehydrogenation by taking propane dehydrogenation reaction as a model reaction. In the reaction process, no hydrogen is added, and a high propane conversion rate and propylene selectivity can be obtained, and the catalyst has good stability and good industrial application prospect. The preparation method is simple, and the dry gel material is crystallized, dried, formed, calcined and reduced to obtain the catalyst. In the preparation process, there is no water washing, filtration and other steps, which reduces the discharge of a large amount of wastewater containing metal and template, and is beneficial to industrial scale production.

Disclosed is a method for synthesizing aluminum nitride by microgravity combustion, which uses Mg4Al3 or Mg 17 Al 12 powder as raw material, and performs combustion in a microgravity and nitrogen atmosphere, and then purifies the combustion product using hydrochloric acid to obtain AlN powder. The method is applicable to both small particles (1 μm in diameter) and large particles (500 μm in diameter), and has a short synthesis time, high purity of the obtained aluminum nitride, and the heat generated by combustion can be used to maintain the temperature of the synthesis chamber, thereby reducing energy consumption.

This liquid crystal polyester composition comprises a liquid crystal polyester and a release agent including pentaerythritol tetrastearate, wherein the release agent satisfies (a) and (b). (a): The 1% weight loss temperature in a nitrogen atmosphere is 270°C-360°C. (b): The amount of high-boiling components generated during heating at 120°C for 20 hours is 15 ppm or less.

The invention provides a powder metallurgy process for preparing a high-corrosion-resistance alloy grinding ball, which comprises the following steps of: preparing pre-alloyed powder from elements such as Mo and Mn in cooperation with Cr and S, filling the pre-alloyed powder into a spherical mold, performing cold isostatic pressing and pressure maintaining to obtain a green body, sintering in a nitrogen atmosphere to realize effective solid solution of a nitrogen element and dispersion strengthening of a nitride, forming a low-conductivity passive film in cooperation with Mo, and performing sintering treatment to obtain the high-corrosion-resistance alloy grinding ball. The corrosion resistance of the alloy grinding ball is remarkably improved, meanwhile, good wear resistance and mechanical performance are kept through element strengthening and structure optimization, the comprehensive requirements for high wear resistance, high corrosion resistance and high strength of the grinding ball under the complex working condition are met, and the problem that a traditional grinding ball is short in service life under the complex corrosion working condition is solved. The method is suitable for high-corrosion-wear application scenes such as mines and chemical engineering.

The application relates to the technical field of barrel-mixed auxiliary agents, and particularly discloses a preparation method of an anionic vesicular barrel-mixed auxiliary agent. The method comprises the following operation steps: S1: adding a 40wt% alkali solution into component A, heating and reacting, aging, removing water, cooling to 20-25 DEG C, adding ethanol and uniformly mixing to obtain component B; S2: under a nitrogen atmosphere, heating monoglyceride to 80-85 DEG C, adding sulfamic acid and a catalyst, uniformly mixing, heating to 120-125 DEG C and reacting for 3-3.5 hours, adding propylene glycol and uniformly mixing to obtain component C; and S3: uniformly mixing component A, component B, component C and component D, adjusting the pH by using sodium dihydrogen phosphate and disodium hydrogen phosphate to obtain the anionic vesicular barrel-mixed auxiliary agent.