2515 results about "Sequestering Agent" patented technology

The invention belongs to the field of pet deodorization, and particularly relates to pet shower balm containing natural deodorization extracts and lasting in fragrance and a preparation method of the pet shower balm. The shower balm for pets comprises the following raw materials: a persimmon extract, silica, an emulsifier, an antioxidant, a hard water ion chelating agent, a thickening agent and a solubilizer. The preparation method comprises the following steps: mixing the persimmon extract and the silica to obtain a solution A; mixing coconut oil, olive fruit oil and glycerol to obtain a solution B; adding sodium polyacrylate and microcrystalline cellulose into water, and dissolving; adding a hard water ion chelating agent, and mixing to obtain a mixed solution; and finally, adding the mixed solution into the solution A and the solution B, mixing, cooling, adding the antioxidant, and stirring. The persimmon extract and the silica have a very good removal promoting effect, and have a good application prospect.

The invention relates to a preparation method and application of high-compaction-density composite sodium ferric phosphate. The preparation method comprises the following steps: weighing a sodium source, an iron source and a phosphorus source according to a stoichiometric ratio of [xNa + (a-x) A]: [yFe + (b-y) B]: P = a: b: (c + 2), mixing and dispersing the iron source, the sodium source, the phosphorus source and a chelating agent into pure water, reacting for a period of time at a certain temperature, transferring into a sand mill for grinding, adding a dispersing agent, cane sugar, the dopants A and B, and obtaining slurry F after grinding; and carrying out spray drying on the slurry F to obtain powder K. The powder K is transferred to a tubular furnace, and the oxygen content is 1t under the N2 protective atmosphere; and calcining at the temperature of 450-600 DEG C under the pressure of 50 ppm, and then carrying out air jet pulverization to obtain sodium ferric pyrophosphate positive electrode material powder with high compaction density and a molecular formula of (NaxAa-x) (FeyBb-y) (PO4) cP2O7. When the product is used, the compaction density is high, the dynamic performance of the material is enhanced, the thermal stability and chemical stability of the material are improved, and the electrochemical performance is good.

The present invention relates to a method and system for efficiently extracting lithium from a mixed salt solution. The method comprises: adding a chelating agent into a mixed salt solution to be treated, and regulating the pH to promote the chelating agent and divalent or multivalent cations in the mixed salt solution to form a stable chelate, so as to obtain influent water; subjecting the influent water to membrane separation, and using a membrane pore size sieving mechanism and electrostatic repulsion to achieve lithium-magnesium separation, so as to generate membrane-filtered concentrated water and membrane-filtered produced water; regulating the pH of the membrane-filtered concentrated water, and subjecting same to solid-liquid separation so as to obtain a high-value hydroxide having a high degree of dispersion and a chelating agent recovery liquid; and performing concentration and enrichment on the membrane-filtered produced water to obtain a lithium-rich concentrated liquid, the lithium-rich concentrated liquid being used for lithium precipitation. The solution of the present invention solves the technical problems of existing membrane process lithium extraction technologies of high requirements for influent water, limited adaptability, large consumption of fresh water, low lithium-magnesium separation factor, low concentration of produced water, low lithium recovery rate, etc.

The invention provides a supported catalyst as well as a preparation method and application thereof. The preparation method of the supported catalyst comprises the following steps: S1, carrying out precipitation reaction on vanadate and first ammonium salt in a first solvent to obtain a first product system containing a carrier precursor; s2, enabling the carrier precursor, a second ammonium salt, a noble metal-containing compound, a chelating agent and a first reducing agent to react in a second solvent to obtain a second product system containing a catalyst precursor; and S3, carrying out annealing treatment on the catalyst precursor and a second reducing agent in protective gas to obtain the supported catalyst. The noble metal in the supported catalyst prepared by the method is not easy to migrate and aggregate, and the stability is better. In addition, the dosage of precious metal needed by the preparation method is smaller, and the atom utilization rate is higher.

The invention discloses application of a combined collecting agent in flotation of low-grade copper oxide ore, and belongs to the technical field of beneficiation flotation reagents. The combined collecting agent comprises a chelating agent and a xanthate collecting agent, the chelating agent is benzyl-N, N-dimethyl dithiocarbamic acid, the xanthate collecting agent is amyl xanthate, and the combined collecting agent is used for flotation of low-grade copper oxide ore. Ore is subjected to crushing, ore grinding, coarse separation and pulp mixing to obtain ore pulp to be floated, a gangue inhibitor is firstly added into the ore pulp, then sodium sulfide is added to activate copper oxide ore, and after activation, a combined collecting agent and a foaming agent are sequentially added to recover copper oxide minerals in the ore. Compared with a single xanthate collecting agent, the low-grade copper oxide ore combined collecting agent is small in agent dosage and convenient to add, the dosage of amyl xanthate serving as a collecting agent and the dosage of sodium sulfide serving as a vulcanizing agent are reduced, the beneficiation cost is reduced while the flotation recovery rate and grade of low-grade copper oxide ore are improved, and the low-grade copper oxide ore combined collecting agent is an environment-friendly agent.

The invention relates to a method for continuously producing 1, 1, 1, 3-tetrachloropropane, which comprises the following steps: adopting a loop reactor in which a beam pipe is arranged in the reactor, mixing reaction raw materials ethylene and carbon tetrachloride at a Venturi nozzle at the lower part of the reactor through a gas circulation loop and a liquid circulation loop outside the reactor, and spraying into the reactor filled with a main catalyst. A cocatalyst and a chelating agent are added into a carbon tetrachloride raw material in advance, are pumped into a liquid loop by a feeding pump and then enter a reactor. Reaction raw materials are circularly stirred under the action of a beam pipe in the reactor, so that solid, liquid and gas phases are fully mixed. By adopting the method disclosed by the invention, the selectivity and the production efficiency of the 1, 1, 1, 3-tetrachloropropane can be greatly improved, and the method also has the advantages of simplicity in operation, environment friendliness, long service life of the catalyst and low cost.

The invention relates to the technical field of electrochemistry, in particular to a high-entropy Prussian blue analogue positive electrode material, a preparation method and application. Preparing manganese source, iron source, cobalt source, nickel source and copper source solutions; the preparation method comprises the following steps: dispersing a potassium ferrocyanide precursor and a potassium citrate chelating agent in deionized water, adding quantitative manganese source, iron source, cobalt source, nickel source and copper source solutions after uniformly dispersing, and continuously stirring in the adding process until all the solutions are dropwise added; centrifugally washing the obtained mixed solution by using deionized water and absolute ethyl alcohol; drying the centrifugally washed colloid in a vacuum drying box; the obtained solid particles are ground into uniform powder, and the high-entropy Prussian blue analogue positive electrode material is prepared by adopting the preparation method; the material can be used as a sodium ion battery positive electrode material. The content of crystal water is reduced, and side reactions in the electrochemical process are reduced. Excessive crystal defects are improved; the structural stability is improved; and the sodium ion diffusion barrier is reduced.

Electrospun poly(acrylic) acid (PAA) / poly(vinyl) alcohol PVA nanofibers and integrated filtration membranes generated therefrom are disclosed herein. The membranes are suitable for use in selectively removing heavy metals such as lead and cadmium from water. The surface of the nanofibers is preferably functionalized with one or more chelating agents. The membranes have a high removal efficiency and adsorption capacity with well-distributed high-density heavy metal adsorption sites with strong binding affinities for targeted heavy metals.

The invention discloses a high-stability iron-cerium flow battery and a preparation method of electrolyte, and belongs to the technical field of flow batteries. A positive electrolyte and a negative electrolyte are cerium salt and ferric salt, and are respectively mixed with nitrilotriacetic acid, ethylenediamine tetraacetic acid, trans-1, 2-cyclohexanediamine tetraacetic acid, 1, 3-propane diamine tetraacetic acid, N-(2-ethoxyl) ethylenediamine-N, N ', N'-triacetic acid, iminodiacetic acid, iminodisuccinic acid, succinic acid, N, N '-bis (2-hydroxyethyl)-N, N', N '-triacetic acid and N, N'-bis (2-hydroxyethyl)-N, N '-bis (2-hydroxyethyl)-N, N'-bis (2-hydroxyethyl)- N, N '-ethylenediamine disuccinic acid, aspartic acid or a derivative chemical thereof are coordinated to form an aqueous solution of the coordination compound. The positive electrolyte and the negative electrolyte are prepared from the same and equal chelating agent and supporting electrolyte, and the matching degree of the acid-base property of the positive electrolyte and the negative electrolyte is maintained; the auxiliary electrolyte is added, so that the viscosity difference between the positive electrolyte and the negative electrolyte is reduced, the transmembrane migration of water is reduced, and the conductivity is improved. The selected chelating agent is stably combined with iron and cerium, transmembrane transportation of active substances is inhibited, ion cross contamination among different electrolytes is reduced, and meanwhile side reactions are reduced. The price is low, and the charge-discharge performance and the cycle life of the iron-cerium flow battery are effectively improved at relatively low cost.

The invention relates to the technical field of molybdenum metallurgy, and particularly discloses a crystal preparation method of ammonium heptamolybdate, which comprises the following steps: taking low-grade molybdenite, crushing, ball-milling, and calcining to obtain molybdenum calcine. And dispersing the molybdenum calcine with a sodium hydroxide solution, and filtering to obtain a leaching solution. And then adding a compound chelating agent into the leachate, carrying out adsorption and desorption treatment to obtain a sodium molybdate solution, then adjusting the pH value, carrying out ammonia leaching, and then carrying out cooling crystallization to obtain ammonium heptamolybdate. By adopting the prepared compound chelating agent, the purity of ammonium heptamolybdate prepared by taking low-grade molybdenite as a raw material can be improved, and after desorption treatment, separated precipitates can be used as the compound chelating agent again for adsorbing molybdate radicals, so that the aim of cyclic utilization is achieved.

A compound or molecular complex. The compound or molecular complex comprises: a metal chelator configured for chelation with a radioactive isotope or a non-radioactive isotope; and a trifluoroborate (BF3)-containing moiety configured for 19F / 18F exchange or a precursor thereof; and optionally a cell-targeting domain.

The invention discloses a soil heavy metal chelating agent, the chelating agent comprises a chelating agent I and a chelating agent II, the chelating agent I is composed of fly ash and domestic sludge, and the chelating agent II is a modified sodium alginate compound; the mass ratio of the chelating agent I to the chelating agent II is (15-20): (3-5). According to the invention, the chelating agent I is composed of the fly ash and the domestic sludge, the modified sodium alginate compound is used as the chelating agent II, and the two chelating agents are cooperatively used in the soil reclamation of the strip mine dump, so that a series of environmental problems caused by mining activities can be effectively improved, and the reasonable utilization of land resources is promoted.

The invention relates to a process for recycling and regenerating a waste lithium iron phosphate positive electrode material by using a specific chelating agent. The method comprises the following steps: carrying out heat treatment on a waste lithium iron phosphate positive electrode material, putting separated waste lithium iron phosphate powder into a ball milling tank, adding organic acid and a chelating agent, and carrying out ball milling; after the ball milling is finished, adding hydrogen peroxide, uniformly stirring and mixing, adjusting the pH value to 2-3 by using nitric acid, and filtering to obtain a filter cake which is iron phosphate; adding saturated sodium carbonate into the filtrate, precipitating, and recovering lithium carbonate; putting the iron phosphate, the lithium carbonate, the iron source, the lithium source and the phosphorus source in the step S3 into a ball mill for ball milling, and performing high-temperature solid-phase sintering after ball milling to obtain a regenerated lithium iron phosphate material; the chelating agent disclosed by the invention is prepared from (9ci)-2-(2-propenyl)-1-cyclopentene-1-carboxylic acid, 2-mercaptobenzimidazole carboxylic acid, an ethylene boric anhydride pyridine complex and potassium persulfate. The regenerated lithium iron phosphate material prepared by the method has excellent electrochemical performance.

This application discloses a detergent tablet free of SLS surfactant and its preparation method. The detergent tablet includes a film-forming agent, an anionic surfactant, a non-ionic surfactant, a chelating agent, an enzyme preparation, an auxiliary agent and a essence. The film-forming agent includes one or more of polyvinyl alcohol, cellulose, and dodecenyl succinate starch ester. The anionic surfactant includes at least two of sodium α-olefin sulfonate, sodium fatty acid methyl ester sulfonate, and sodium hydroxyethyl sulfonate. The non-ionic surfactant includes at least two of fatty alcohol polyoxyethylene ethers, fatty acid methyl ester ethoxylate, and oil ethoxylate.

The invention relates to the technical field of developing, in particular to a high-selectivity developing solution for alkali-soluble photoresist and a developing process. The problem that the developing effect and the dissolving effect are poor in the developing process is solved. The developing solution is prepared from the following synthetic raw materials: a modified active agent, a weakly alkaline mixture, a modified defoaming agent, a composite dispersing agent, an improved chelating agent, an organic solvent and deionized water. According to the invention, the dissolution rate of the unexposed photoresist is improved by preparing the modified active agent and the weakly alkaline mixture, and the high selectivity of the developing solution is embodied; the defoaming performance of the developing solution is improved by preparing the modified defoaming agent and adding the composite dispersing agent; the developing effect of the material can be improved through the synergistic effect of the improved chelating agent and the organic solvent in the developing solution; the developing solution is applied to the developing process, and the pH value and process parameters are adjusted, so that the developing effect and efficiency of the material are improved.

The invention relates to a composite reverse osmosis membrane acidic cleaning agent, a preparation method and a cleaning process thereof, and belongs to the technical field of environment-friendly water treatment. The cleaning agent comprises the following components in percentage by mass: 4-8% of inorganic acid, 20-40% of organic acid, 1-3% of a surfactant, 0.5-1% of a chelating agent, 0.5-1% of a compound corrosion inhibitor and the balance of deionized water. The composite corrosion inhibitor is formed by compounding 2-mercaptobenzothiazole and the like according to a specific mass ratio, the molecular weight of polyaspartic acid is 5000, and the molar ratio of Zn to Mo in the zinc-molybdate compound is 2: 1. The preparation method comprises the following four steps: firstly preparing a compound corrosion inhibitor premix, then preparing an acidic base solution, and then sequentially adding the components to finally obtain the cleaning solution. According to the cleaning process, a cleaning agent and deionized water are mixed, the membrane flux recovery rate is larger than or equal to 85% through cleaning of a specific process, the reverse osmosis membrane can be effectively cleaned, and the performance of the reverse osmosis membrane can be recovered.

The invention relates to retarded acid for a carbonate rock reservoir and application thereof, and aims to solve the problems of poor high temperature resistance and too high acid rock reaction rate of the current retarded acid for the carbonate rock reservoir. The retarded acid for the carbonate rock reservoir comprises an acid agent, a functional aid and water; the acid agent comprises inorganic acid, organic acid, a chelating agent and organic ester in a mass ratio of 1: (10-13): (5-6): (3-4). According to the retarded acid provided by the invention, the acid agent is specifically designed, and the inorganic acid, the organic acid, the chelating agent and the organic ester in a specific ratio are matched, so that the retarded acid has high temperature resistance, and meanwhile, the problem that the acid-rock reaction rate is too high is avoided. And the deep transformation of the acid liquid in the reservoir is realized under the clamping of a low acid rock reaction rate. And by means of the high resistance reduction capacity after weight increasing, it is guaranteed that the construction operation pressure is reduced in the deep well and ultra-deep well reservoir transformation process, and therefore the efficient reservoir transformation capacity is achieved.

A method for synthesizing a zirconium complex includes: mixing a solvent containing an organic substance having a dipole moment of 3.0 D or more, a chelating agent solution in which a chelating agent containing a structure represented by General Formula (1) or General Formula (2) is dissolved, and zirconium dissolved in an acidic solution, to obtain a mixed solution; and setting the mixed solution at a predetermined temperature or more to synthesize a zirconium complex.

The invention relates to the technical field of welding cleaning agents, in particular to an aluminum alloy welding cleaning agent and a preparation method and application thereof. The aluminum alloy welding cleaning agent comprises the following raw materials in parts by mass: 10-20 parts of organic acid, 1-3 parts of modified silicon dioxide, 0.1-0.5 part of a chelating agent, 1-2 parts of an acidic dispersant, 2-5 parts of a corrosion inhibitor, 1.1-3 parts of a penetrant, 5-10 parts of a defoaming agent and 60-100 parts of water. The cleaning agent is reasonable and scientific in formula, simple to prepare, free of special equipment, high in cleaning capacity, capable of achieving an excellent cleaning effect at low temperature, short in time, good in working efficiency and extremely high in cleaning efficiency on oil stains on metal surfaces, especially aluminum alloy surfaces, and the corrosivity is obviously reduced.

The invention discloses a sodium ferric pyrophosphate material with a sodium storage dominant crystal face regulated and controlled by cation doping as well as a preparation method and application of the sodium ferric pyrophosphate material. The chemical formula of the prepared sodium ferric pyrophosphate material with the regulated and controlled crystal structure is Na < 4 > Fe < 2.97 > M < 0.03 > (PO4) < 2 > P < 2 > O < 7 >. Wherein M = Sr, or Sr and a second doping element, and the second doping element is selected from one of Cd, Bi, Mo, Ni and Al. The material is prepared by adopting a sol-gel method, an iron source, a chelating agent, a sodium source, a phosphorus source and doping elements are dissolved in deionized water, and stirring is performed until a gel state is formed; and drying and calcining twice to obtain a final product. The sodium ferric pyrophosphate electrode material prepared by the invention has more sodium storage dominant crystal faces, shows good electrochemical performance, has the advantages of simple preparation process, easily available raw materials and low cost, has remarkable industrial application value, and is easy for large-scale production.

The present disclosure provides a unit dose detergent comprising a water-soluble film material comprising a first compartment that is adjacent to a second compartment and separated by at least one layer of the film. The first compartment encloses a liquid composition comprising a non-aqueous solvent, and the second compartment encloses a powder composition comprising a pigment and at least one additive selected from a salt, a flow aid, acid, enzyme, chelating agent, a polymer, and any combination thereof; such that at least one of the liquid composition and the powder composition comprises a surfactant. Also provided is a method of preparing the powder composition for use in the unit dose detergent. The method includes adding the pigment to a salt to provide a pigment-salt combination and adding a flow aid to the pigment-salt combination to form the powder composition.

The invention relates to a fluorine-containing binder for a sulfide all-solid-state battery and a preparation method and application thereof.The binder is formed by copolymerizing isoprene and lithium perfluorovinyl ether sulfonate, specifically, the lithium perfluorovinyl ether sulfonate, a chelating agent, an emulsifying agent, ferrous sulfate, a reducing agent and an acid-base buffering agent are dissolved in water, cooling is conducted in the inert atmosphere, and the fluorine-containing binder for the sulfide all-solid-state battery is obtained. And adding isoprene, an initiator and a molecular weight regulator, and carrying out polymerization reaction to obtain the fluorine-containing binder. The isoprene can enhance the solubility of the lithium perfluorovinyl ether sulfonate fragment in the non-polar solvent, so that the whole polymer is dissolved in the non-polar solvent; the perfluorovinyl ether lithium sulfonate has a large space proportion of fluorocarbon groups, and has a shielding effect on hydrocarbon groups on isoprene, so that the stability of the whole polymer can be improved. The fluorine-containing binder prepared by the preparation method disclosed by the invention is a binder with high elasticity, high ionic conductivity and high stability.

To provide an efficient separation and recovery method for laminated materials suitable for plastic recycling, which has excellent detachability of the printing layer and adhesive layer, and also suppresses reattachment of components detached from the detached layer, and furthermore, it is to provide a method for manufacturing molding materials obtained by melting and kneading the recovered plastic base materials, and a method for manufacturing high-grade molded bodies obtained by heating and molding the molding materials.SOLUTION: The method for separating and recovering laminates includes the process of immersing a laminate with at least a plastic substrate layer and a desorption layer in contact with the plastic substrate layer in a desorption solution containing a chelating compound and / or chelating agent (except when it is a surfactant) to desorb the desorption layer and recover the plastic substrate.SELECTED DRAWING: None

The invention discloses a method for enriching light metal ions in a pore channel based on carbon nanofiber / carbon fiber nano confinement, and belongs to the technical field of sample pretreatment, and the method comprises the following steps: S1, preparing a carbon nanofiber / carbon fiber confinement material; and S2, putting the carbon nanofiber / carbon fiber confinement material obtained in S1 into a light metal ion solution, and stirring. According to the method for enriching the light metal ions in the pore channel based on the carbon nanofiber / carbon fiber nano confinement, the carbon nanofiber / carbon fiber is used as a confinement fluid carrier, ultrapure water, methanol or n-hexane is used as an extracting agent, a chelating agent does not need to be introduced, the method is green and environmentally friendly, the mass transfer rate is increased, and the method is suitable for large-scale industrial production. Therefore, high enrichment of light metal ions in water is realized.

The invention discloses an ammonia nitrogen detection system and an application method thereof, and ammonia nitrogen detection test paper, the ammonia nitrogen detection system is prepared by the following steps: step SA1) preparing a dipping mixed solution, the dipping mixed solution comprises: a potassium sodium tartrate solution with a concentration of 3-60 g / L; a sodium salicylate solution with a concentration of 20-320 g / L; the concentration of the sodium nitroprusside solution is 0.1 to 0.8 g / L; and deionized water. On the basis of the principle of salicylic acid-pypocholoride spectrophotometry, the impregnated test paper, the reagent tube and the standard colorimetric card are combined, and the rapid ammonia nitrogen detection system special for medium-concentration sewage detection is successfully developed. The toxicity problem of mercury iodide in a Nessler reagent method and the toxicity problem of phenol in a phenol-pypocholoride spectrophotometric method are avoided, main reagents are non-toxic and harmless to a human body, interference of metal ions in a water sample can be effectively eliminated by adopting sodium potassium tartrate tetrahydrate as a chelating agent, and the detection stability and accuracy are improved.

The invention discloses a tooth repair composition containing mesoporous hydroxyapatite, a tooth repair product and a preparation method and application of the tooth repair composition and the tooth repair product. The tooth repair composition comprises nano-hydroxyapatite, fluoride and a chelating agent, the logarithm value logK of the stability constant K of the chelating agent to calcium ions is 1 < = logK < = 5, and K is measured in an aqueous solution with the temperature of 25 DEG C, the pH value of 7.0 and the ionic strength of 0.1 M; the nano-hydroxyapatite is prepared from nano-scale mesoporous hydroxyapatite, and the nano-hydroxyapatite contains nano-scale mesoporous hydroxyapatite. By adding the specific chelating agent, dynamic balance is formed in the tooth repairing composition, slow release protection can be formed on free calcium ions, the double inactivation effect possibly occurring when hydroxyapatite and fluoride exist at the same time is effectively avoided, the synergistic repairing effect of hydroxyapatite and fluoride is fully exerted, and the tooth repairing effect is improved. The use of fluorides can be greatly reduced, and safety and reliability are achieved.

The invention relates to the field of metal extractant preparation, in particular to a metal extractant microcapsule and a preparation method thereof. The preparation method of the metal extraction agent microcapsule comprises the following preparation steps: (1) uniformly mixing ethyl acrylate, methacrylamide, 2-acrylamido-2-sodium methylpropanesulfonate, a cross-linking agent and an initiator, dropwise adding an emulsifier solution under a stirring condition, carrying out ultrasonic treatment, irradiating with ultraviolet light under the stirring condition for 10-20 minutes, washing with pure water, and separating to obtain a metal extraction agent microcapsule; drying to obtain a hollow microcapsule; and (2) vacuumizing the hollow microcapsule obtained in the step (1), adding a metal chelating agent, carrying out ultrasonic treatment for 5-10 hours, filtering, and washing to obtain the metal extractant microcapsule. The preparation process of the metal extractant microcapsule is simple and easy to operate, and the metal extractant microcapsule has a relatively good encapsulation efficiency on a metal chelating agent and has a relatively high removal effect on various metal ions.

The present invention provides an amino acid cleansing product and a preparation method thereof, and belongs to the technical field of cosmetics. Relative to 100% by mass of the amino acid cleansing product, the amino acid cleansing product is composed of 25-35% by mass of glycerol, 5-20% by mass of diglycerol, 15-35% by mass of amino acid surfactant, 5-10% by mass of non-amino acid surfactant and the remainder of auxiliary components, wherein the auxiliary components are one or more of a neutralizer, a preservative, a chelating agent, a thickener, and deionized water. The amino acid cleansing product of the present invention can improve stability while avoiding increasing production costs, maintaining a refreshing washing feeling and having skin mildness, and the preparation method of the amino acid cleansing product is simple and suitable for large-scale production.

The invention discloses positive electrode slurry for preventing formation of gel and a preparation method of the positive electrode slurry. The method comprises the following steps: S1, drying a positive electrode active material under the protection of inert gas; s2, carrying out surface modification by using a functionalized silane coupling agent; s3, drying the conductive agent under a high-temperature vacuum condition; s4, under the protection of inert gas, lithium alkyl sulfonate, a polyhydric alcohol chelating agent and polyvinylidene fluoride are subjected to a reaction to prepare a modified binder; s5, mixing and dispersing the modified active material, the conductive agent, the modified binder and the acidic buffer agent in a low-dew-point drying chamber; s6, performing ultrasonic treatment on the slurry under a vacuum condition; and S7, adding a cross-linked fluorosilane coupling agent, mixing at a low speed and precisely filtering to obtain the anti-gel positive electrode slurry. According to the invention, through a multi-synergistic anti-gel mechanism, the problem that the positive electrode material slurry is easy to form gel is solved, and the prepared slurry has excellent stability, rheological property and coating performance, so that the electrochemical performance of the battery is improved.

The invention relates to the technical field of bamboo pulp bleaching, and particularly discloses a method for preparing all-chlorine-free bleached bamboo pulp and application. The method adopts a three-section enhanced bleaching process and comprises the following steps: firstly, decomposing lignin under an alkaline condition of 100-115 DEG C through oxygen delignification (Op section); removing transition metal ions by using sulfuric acid and a metal chelating agent with a specific structure by adopting acid pickling chelation (AQ section); and finally, deeply oxidizing the residual lignin in a high-pressure oxygen environment through oxygen enhanced bleaching (Po section). In each stage, hydrogen peroxide is used as a main bleaching agent, sodium hydroxide, sodium silicate and other assistants are matched, and ineffective decomposition of hydrogen peroxide is effectively inhibited through staged pH regulation and a metal chelation technology. The whiteness of the obtained bamboo pulp is larger than or equal to 83% ISO, the kappa number is smaller than or equal to 3.0, and the requirements of high-grade paper products are completely met.