42results about How to "Improve electrolyte resistance" patented technology

The invention relates to the technical field of secondary ion batteries, in particular to a dry binder and a preparation method thereof as well as an electrode plate and a preparation method thereof. The preparation method of the dry binder comprises the following steps: mixing and granulating a graft polymer and a metal salt to obtain the dry binder, the graft polymer comprises maleic anhydride grafted polypropylene. Maleic anhydride grafted polypropylene is used as a polymer matrix and is blended with the metal salt to prepare the solvent-free dry-method binder through a mixing process, and the solvent-free dry-method binder has excellent binding strength and lithium ion conductivity, and is high in use safety and low in raw material cost.

The invention belongs to the technical field of current collectors, and particularly relates to an ultrasonic-assisted directional energy deposition current collector and a preparation method and system thereof.The preparation method comprises the following steps that S1, Cu is sputtered on the surface of a base material layer through magnetron sputtering, and a carrier foil is obtained; s2, copper is electrodeposited on the carrier foil in an acid sulfate system through electrodeposition for thickening to obtain a Cu layer, meanwhile, ultrasonic impact treatment is conducted on the carrier foil, the frequency of ultrasonic waves is 10-30 MHz, and the power does not exceed 100 W; according to the method, the ultrasonic field is applied in the acid sulfate system, diffusion control in the Cu deposition process is converted into electrochemical control, the mass transfer process is accelerated, and the electro-deposition effect of Cu is improved; meanwhile, ultrasonic waves have a grain refining effect, and a microcrystalline structure on the surface of the composite copper foil can be increased in the process of utilizing ultrasonic impact to assist deposition, so that the corrosion of an electrolyte to the composite current collector copper foil is reduced, and the electrolyte resistance of a film layer is improved.

The invention discloses a base membrane for a composite current collector and a preparation method of the base membrane, and belongs to the technical field of current collectors for lithium batteries. Comprising two polymer polar material layers and a polymer reinforcing material layer located between the two polymer polar material layers. The polymer polar material layer comprises polyolefin, a polar polymer material, an amphoteric material and an antioxidant; the polymer reinforced material layer comprises polyolefin, a reinforced material and an antioxidant; the base film for the composite current collector is of a sandwich structure composed of the polymer polar material layer, the polymer reinforcing material layer and the polymer polar material layer, the performance of the edge layer and the performance of the core layer can be considered to the maximum extent, good temperature resistance, tensile strength and electrolyte resistance are achieved, the safety of a device is improved on the whole, and the service life of the device is prolonged. And the current collector development trend is met.

The invention relates to the technical field of adhesive tapes, and discloses an electrolyte-resistant double-sided adhesive tape for an environment-friendly new energy lithium battery, the double-sided adhesive tape comprises a base film layer, adhesive film layers and release films, the adhesive film layers are distributed on two sides of the base film layer, the release films are distributed on two sides of the adhesive film layers, and the adhesive film layers are formed by coating electrolyte-resistant adhesives on two sides of the base film layer. The electrolyte-resistant adhesive is prepared by carrying out cross-linking polymerization on acrylic monomers such as methyl methacrylate and hydroxyethyl methylacrylate under the action of an initiator and a cross-linking agent, and the cross-linking agent is a macromolecular substance which is connected through a silicon-oxygen bond and has a cyclohexyl hexafluoropropane-tertiary butyl block alternating structure. After the special structure of the cross-linking agent is introduced into the molecular chain of the adhesive, the adhesive property, high temperature resistance and electrolyte resistance of the adhesive can be obviously enhanced.

The invention provides coating slurry, a composite current collector, a preparation method of the composite current collector and a lithium ion battery, and belongs to the field of lithium ion battery materials. A coating slurry for a composite current collector is coated on the surface of a polymer base material of the composite current collector, and the coating slurry comprises the following main components in parts by mass: 5-10 parts of an aqueous aliphatic polycarbon polyurethane dispersion liquid, 15-25 parts of an aqueous acrylic resin dispersion liquid, 0.2-1 part of a curing agent and 64-79.8 parts of a solvent. The coating slurry and the coating formed by the coating slurry have good electrolyte resistance, electrochemical stability and safety performance, and the coating formed by the coating slurry can increase the binding force between a conductive layer and a polymer substrate and improve the mechanical strength of the coating, so that the capacity and cycle performance of the lithium ion battery are improved, and the service life of the lithium ion battery is prolonged. The technical problems that the capacity of the lithium ion battery fades quickly, the safety is poor, the service life is short and the like due to an existing composite current collector are solved.

The invention provides electrolyte-resistant high-fluorine-content fluororubber for a lithium battery, and belongs to the technical field of new energy battery materials. Specifically, vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene are used as polymerization monomers, in a deoxidized high-purity water environment, a pH buffer agent, a chain transfer agent and an initiator are added for polymerization reaction to prepare raw rubber, and the fluororubber raw rubber prepared by the method has high fluorine content. The electrolyte-resistant high-fluorine-content fluororubber for the lithium battery, which is prepared by taking the high-fluorine-content fluororubber raw rubber as a raw material and adding a series of auxiliaries for mixing and refining rubber, is suitable for the field of sealing elements of power batteries.

The invention provides a multi-layer composite lithium battery wrapping adhesive tape and a preparation method thereof. The wrapping adhesive tape comprises a first base film layer, a first bonding layer, a second base film layer, a second bonding layer and a release layer, the first base film layer is made of first polyester resin and blue color paste; the first bonding layer is made of a quick-curing epoxy adhesive, and the second bonding layer is made of an acrylic adhesive; the quick-curing epoxy adhesive of the first bonding layer is composed of the following components in parts by weight: 20-60 parts of second polyester resin, 1-20 parts of an isocyanate curing agent, 20-40 parts of bisphenol A epoxy resin, 20-50 parts of a flame retardant and 1-5 parts of an auxiliary agent; the acrylic acid adhesive of the second bonding layer is prepared from the following components in parts by weight: 10 to 60 parts of butyl acrylate, 5 to 10 parts of acrylic acid, 10 to 40 parts of hydroxyethyl acrylate, 10 to 30 parts of butyl acetate, 5 to 40 parts of ethyl acrylate and 0.5 to 5 parts of initiator. The wrapping adhesive tape has good flame retardance and high-temperature stability, and solves the problems of combustion and explosion caused by high temperature of the lithium battery.

The invention discloses a method for synthesizing ziram. The method comprises the following steps: S1, stirring a compound surfactant and zinc oxide to obtain a dispersion liquid; s2, sealing and pressurizing, and adding dimethylamine for reaction to obtain a dimethylamine salt mixture; and S3, dropwise adding carbon disulfide, performing condensation reaction, and removing impurities to obtain the ziram, wherein the compound surfactant contains at least one of a nonionic surfactant, an anionic surfactant or a macromolecular surfactant. According to the method, the efficient and green synthesis of the ziram is realized through the synergistic effect of a compound surfactant system, a sealed pressurized reaction and a progressive charging sequence.

This invention relates to the field of insulating materials for porous copper foil preparation, and particularly to an insulating material for porous copper foil preparation and its preparation method, as well as a method for preparing porous copper foil. The preparation method includes the following steps: perforating a cathode plate to obtain a cathode plate with multiple blind holes; filling the blind holes with an insulating material for porous copper foil preparation, and curing it to obtain a pretreated cathode plate; the raw materials for the insulating material are: resin, reactive diluent, thixotropic agent, leveling agent, polymerization inhibitor, and photoinitiator. The pretreated cathode plate is used as the cathode and placed in an electrolyte for electrodeposition to obtain porous copper foil. When preparing porous copper foil with the insulating material, the filling material in the blind holes can withstand more than 80 electroplating cycles without peeling off, indicating that the insulating material for porous copper foil preparation possesses excellent adhesion and electrolyte environment durability, enabling a single-filled cathode to support stable electrodeposition over an ultra-long period, significantly extending its effective service life.

The invention discloses an electrolyte-resistant and high-temperature-resistant lithium battery termination adhesive tape, belongs to the technical field of adhesive tape processing, and is used for solving the technical problem that the electrolyte resistance and high-temperature resistance of a lithium battery termination adhesive tape in the prior art need to be further improved. The pressure-sensitive adhesive layer comprises the following raw materials in parts by weight: 60-80 parts of hybrid polyurethane, 10-30 parts of a tackifier, 10-15 parts of a thermal curing agent, 5-10 parts of a plasticizer, 10-15 parts of a solvent and 0.5-2 parts of an antioxidant, and the hybrid polyurethane is obtained by modifying the prepared modified polyurethane by using a prepared modified cross-linking agent and modified silane as a modification chain segment. The residual active functional groups on the surface of the flame-retardant terminating adhesive tape are polymerized with the active functional groups on the surface of the prepared highly electrolyte-resistant and high-temperature-resistant substrate layer in the forming process of the terminating adhesive tape to form a compact structure, and finally the flame-retardant terminating adhesive tape which is electrolyte-resistant, high-temperature-resistant, high in mechanical property and high in viscosity is prepared.

This application discloses a separator and a battery cell, relating to the field of secondary battery technology. The separator disclosed in this application includes a base layer and a coating layer located on at least one side of the base layer. The coating layer is made of a polymer, which includes primary particles and secondary particles. Before the separator comes into contact with the electrolyte, the average particle size of the primary polymer particles is A μm, and the average particle size of the secondary polymer particles is B μm. After the separator is wetted with the electrolyte, the average particle size of the primary polymer particles is C μm, and the average particle size of the secondary polymer particles is D μm. Furthermore, A, B, C, and D satisfy the following condition: 5% < (D-B) / B < (C-A) / A < 50%. The separator described in this application exhibits good electrolyte resistance and good adhesion to the electrodes.

The invention relates to the technical field of rubber materials, in particular to electrolyte-resistant ethylene propylene diene monomer and a preparation method and application thereof. The electrolyte-resistant ethylene propylene diene monomer is prepared from the following components in parts by mass: 100 parts of ethylene propylene diene monomer, 0.5-2 parts of carbon black, 40-70 parts of filler, 1-4 parts of a coupling agent, 0.5-3 parts of a vulcanizing agent and 1-4 parts of an assistant crosslinker, the filler is barium sulfate subjected to surface modification treatment by a titanate coupling agent. The electrolyte-resistant ethylene propylene diene monomer which is resistant to high temperature and acid corrosion and has the electrical performance required by the battery pack is provided, the preparation method is simple, convenient and easy to operate, the cost is low, the efficiency is high, and the prepared electrolyte-resistant ethylene propylene diene monomer has good physical and mechanical performance and electrical performance; meanwhile, the material shows good heat aging resistance and electrolyte resistance, has a good application prospect, and can be particularly applied to lithium battery sealing elements.

The invention relates to the technical field of pretreatment of aluminum foil before lithium ion battery soft package aluminum plastic film covering, in particular to a trivalent chromium passivation solution for aluminum foil coating with high electrolyte resistance and a preparation method of the trivalent chromium passivation solution, and the formula of the trivalent chromium passivation solution comprises trivalent chromium salt, hexafluorozirconic acid, a film-forming agent, a film-forming accelerant and deionized water; the weight ratio of the trivalent chromium salt to the hexafluorozirconic acid to the film-forming agent to the film-forming accelerant in each liter of the trivalent chromium passivation solution is (6-10) g: (0.02-0.05) g: (10-15) g: (15-20) g, and the balance is deionized water. The trivalent chromium passivation solution is mainly used for pretreatment of aluminum foil before lithium ion battery soft package aluminum-plastic film lamination, an organic and inorganic composite film is generated on the surface of the aluminum foil through reaction, the bonding strength of aluminum-plastic lamination can be greatly improved, and the trivalent chromium passivation solution has ultrahigh electrolyte resistance.

The invention relates to the technical field of aluminum-plastic composite films, and in particular to a method for preparing an aluminum-plastic composite film for a lithium battery. The method adopts titanium oxide, methoxypolyethylene oxide acrylate, vinylguanamine and nickel acrylate to perform surface modification on a polypropylene film, and the modified polypropylene film is then irradiated with gamma rays and composited with nylon / aluminum foil through an adhesive to obtain the aluminum-plastic composite film for a lithium battery. The aluminum-plastic composite film prepared by the invention has high peeling strength between an aluminum foil layer and a heat-sealing layer (polypropylene film), improves the barrier property and electrolyte resistance of a lithium battery soft packaging material, and ensures that the lithium battery has stability for long-term use.

The invention discloses a polyacrylate compound for acid dye printing replacing urea and a synthesis method, belonging to the technical field of polymer material synthesis. The polyacrylate compound for acid dye printing replacing urea comprises a polymerization monomer, a cross-linking monomer, a composite emulsifier and an initiator, the polymerization monomer comprises at least an acrylic acid monomer, an acrylic ester and sodium styrene sulfonate, and also comprises itaconic acid or maleic anhydride, the cross-linking monomer comprises diallyl phthalate, the composite emulsifier comprises a reactive emulsifier, a nonionic emulsifier and / or an anionic emulsifier, the above raw materials are subjected to emulsion polymerization in a redox system to obtain the polyacrylate compound for acid dye printing replacing urea, the polyacrylate compound forms a network structure in an extended state, and the ability to bind water molecules and the network coating and holding water can be greatly improved in combination with the multiple anionic groups possessed by the polyacrylate compound, the polyacrylate compound has excellent moisture absorption, moisture retention, osmotic solubilization, dispersion and other properties, and has excellent environmental protection.

The invention relates to the technical field of packaging materials, in particular to a bio-based polyamide film for aluminum-plastic film packaging and a preparation method of the bio-based polyamide film. The film comprises a coating layer and a bio-based polyamide base material layer, the coating layer is formed by coating the surface of the bio-based polyamide base material layer with acrylic acid coating liquid, and the acrylic acid coating liquid comprises organic silicon modified acrylic resin, polyurethane microspheres, an aziridine cross-linking agent and water; the bio-based polyamide base material layer is composed of three layers of biaxially oriented bio-based polyamide films, and bio-based PA56 and bio-based PA5X in each layer are formed according to a certain proportion. The bio-based PA56 and the bio-based PA5X are cooperatively used and are matched with the acrylic acid coating liquid, so that the stretching ratio of the thin film is reduced, the strength, the toughness and the wear resistance of the thin film are ensured, the electrolyte resistance is improved, and the high pit flushing property of a flat film method is realized.

This invention provides a polyacrylate binder for lithium-ion battery separator coating and its preparation method, relating to the field of lithium-ion battery materials technology. The binder comprises emulsion particles with a core-shell structure, prepared by soap-free emulsion polymerization. The soap-free emulsion includes functional monomers, hard monomers, soft monomers, rigid monomers, and post-crosslinking monomers. The core-shell structure includes a core layer, an intermediate layer, and an outer layer. The core layer is copolymerized from hard monomers and functional monomers; the intermediate layer is copolymerized from functional monomers, soft monomers, and rigid monomers; and the outer layer is copolymerized from hard monomers, soft monomers, and functional monomers. This invention, through its three-layer core-shell structure design, achieves a unified approach to separator base film adhesion, prevents re-adhesion during high-temperature transportation, ensures good adhesion to positive and negative electrode sheets under room temperature cold pressing, and provides excellent electrolyte resistance, thus solving the technical problems commonly found in existing PMMA coating processes.

The present invention discloses a method for preparing a secondary battery bag film, wherein the secondary battery bag film comprises at least an outer layer, a metal layer, a primer layer, and a sealant layer in corresponding order, or at least comprises an outer layer, a metal layer, a primer layer, a melt-extruded resin layer, and a sealant layer. The method for preparing the secondary battery bag film is characterized in that it comprises a drying process of applying a primer layer composition on the metal layer and heating to dry the primer layer composition and curing at least a portion of the primer layer composition, an organic solvent-based emulsion composition is used as the primer layer, the organic solvent-based emulsion composition comprises acid-modified polypropylene and a curing agent, the curing starting temperature is below 150°C, preferably 135°C to 150°C, the drying process temperature is below 150°C, preferably 135°C to 150°C, and in the method for preparing the secondary battery bag film, when the sealant layer is attached, a heat lamination process is not performed.

Provided is a binder for a secondary battery electrode, which is capable of improving the toughness of a binder coating film after being impregnated with an electrolyte, the electrolyte resistance of a secondary battery electrode mixture layer, and the cycle characteristics of a secondary battery. A binder for secondary battery electrodes, which contains a carboxyl group-containing cross-linked polymer or a salt thereof, and wherein at least some of the carboxyl groups are functional groups for binding to an organic compound. The organic compound is an organic compound having two or more cationic groups.

The invention relates to a modified styrene block copolymer and a preparation method and application thereof, the modified styrene block copolymer is an epoxy functional group modified semi-hydrogenated styrene block copolymer, the hydrogenation degree of the semi-hydrogenated styrene block copolymer is 60-90%, the content of the epoxy functional group of the semi-hydrogenated styrene block copolymer is 5-15 mol%, and the content of the epoxy functional group of the semi-hydrogenated styrene block copolymer is 5-15 mol%. Based on the molar content of the conjugated diene block. According to the invention, the epoxidized modified styrene-conjugated diene block copolymer (ESBC) is adopted to replace the traditional SBC rubber, and the stability and aging resistance of the material are improved by the partial hydrogenated structure of the ESBC; a certain content of epoxy functional groups strengthen the compatibility and the adhesive property of the ESBC and a polar material. The hot melt adhesive prepared from ESBC has excellent bonding strength, thermal stability and electrolyte resistance, and has great application value in the field of lithium battery bonding.

According to the rigid polyimide resin for the anode electrophoretic paint and the anode electrophoretic paint provided by the invention, the polyimide resin is rigid water-soluble high-molecular-weight resin, has good insulating property, high temperature resistance and electrolyte resistance, and can be used for protecting a shell film of a power battery when being used for protecting the shell film of the power battery. And the interior and / or the exterior of the power battery can have relatively good insulation, temperature resistance and electrolyte resistance protection.

The invention relates to a high-temperature electrolyte-resistant acrylic pressure-sensitive adhesive, a swelling tape and a preparation method thereof. The high-temperature electrolyte-resistant acrylic pressure-sensitive adhesive comprises an acrylic polymer, which is made of raw materials containing the following components in parts by weight: 20 to 40 parts of a long-chain acrylic monomer; 3 to 10 parts of a long-chain methacrylate monomer; 1.0 to 3.0 parts of an acrylic functional monomer; 0 to 1.5 parts of a methacrylic functional monomer; 3 to 12 parts of a hard monomer; 0 to 6 parts of a SIS elastomer; 0.1 to 1.0 parts of an initiator; and 48 to 56 parts of a first solvent. The high-temperature electrolyte-resistant acrylic pressure-sensitive adhesive can be used to make a swelling tape, which is suitable for lithium-ion batteries. After the swelling tape absorbs electrolyte, it expands to fill the gap between the battery core and the shell inside the battery, and at the same time has viscosity and is fixed in the gap position without relative displacement, thereby eliminating safety hazards of the battery during use, especially under harsh working conditions.

The invention discloses an adhesive for aluminum-plastic film, comprising component A and component B, wherein the component A comprises the following components by mass percentage: 10% to 30% of modified polyolefin, 1%-5% of additive, and 65% to 89% of solvent, and the component B comprises the following components by mass percentage: 10%-15% of isocyanate compound, 0.5%-2% of additive, and 84.5%-89.5% of solvent. The adhesive polyolefin component such as polypropylene provided by the invention has better solvent resistance and acid resistance due to its chemical inertness, and the adhesive provided by the invention is applied on the inner surface of aluminum foil coated with a corrosion-resistant coating to form an inner adhesive layer, and then the aluminum foil layer with the inner adhesive layer is dry-compounded with a polypropylene BOPP layer, thereby improving the electrolyte resistance of the aluminum-plastic film.

The present application provides an adhesive tape and an electrochemical device and an electronic device comprising the adhesive tape. The adhesive tape comprises an adhesive layer and a substrate layer. The adhesive layer comprises polyolefin and / or modified polyolefin. The dissolution of the adhesive tape in a lithium salt-free electrolyte is tested by cyclic voltammetry. When the scanning voltage is 4.5V, the number of reaction peaks is zero. When the scanning voltage is between 3V and 4.5V, the oxidation peak intensity is less than 1×10 ‑7 A. The adhesive tape provided in the present application has good electrolyte resistance, high adhesion and low swelling degree, which is beneficial to improving the safety performance of the electrochemical device and extending the service life of the electrochemical device.

This application relates to the technical field of rubber sealing materials, and discloses an insulating and electrolyte-resistant rubber sealing material, its preparation method, and its application. The raw material components of the insulating and electrolyte-resistant rubber sealing material of this application include: peroxyfluororubber raw rubber, insulating carbon black, modified nano-calcium carbonate, acid absorbent, lubricant, peroxide vulcanizing agent, and additives; wherein the nitrogen adsorption specific surface area of ​​the insulating carbon black is 20~60 m². 2 / g; Modified nano-calcium carbonate is obtained by surface modification treatment of nano-calcium carbonate with a particle size of 20~80nm using an aminosilane coupling agent. The preparation method of this application, through mixing, open milling and sheeting, and vulcanization, produces an insulating and electrolyte-resistant rubber sealing material with excellent insulation, resilience, mechanical strength, high temperature resistance, and electrolyte resistance, with a volume resistivity reaching up to 1.9×10⁻⁶. 15 Ω·cm, tensile strength retention rate after heat aging at 150℃ for 72h ≥92.4%.

The invention provides a preparation method of an electrolyte-resistant adhesive tape for a lithium battery, which comprises the following four steps: preparing materials, preparing a paper cup adhesive, preparing a film and forming the adhesive tape. An epoxy resin curing agent, a nitrite accelerant, a hydrogen peroxide catalyst, an ozone catalyst, a magnesium oxide filling agent, a calcium carbonate filling agent, an aluminum oxide filling agent, a polyurethane sealant, a zinc oxide antioxidant, a ferric oxide antioxidant and a nano-silver preservative are added, so that the prepared adhesive has excellent electrolyte resistance; the adhesive tape has the advantages that the adhesive tape can meet the bonding requirement of an electronic product in an electrolyte environment, the adhesive tape is matched with a film, electrolyte permeation can be effectively prevented, the safety and performance of a battery are improved, the film is subjected to surface treatment, the bonding performance of the film and the adhesive is improved, and the stability of the adhesive tape in the using process is guaranteed.

The invention relates to the technical field of insulating materials, in particular to a polyimide mixture and a preparation method thereof. The preparation raw materials comprise binary anhydride, diisocyanate, a catalyst, a solvent, a modified inorganic filler, a cross-linking agent, a diluent and a coalescing agent. The modified inorganic filler is modified by using a coupling agent. The coating prepared from the polyimide mixture has good high temperature resistance and insulation performance, and also has good impact resistance, electrolyte resistance, acid and alkali resistance, friction resistance and good adhesive force with a metal substrate.

An electrode lead according to one embodiment of the present invention for solving the problem includes: a first electrode lead, one end of which is connected to an electrode tab protruding from one side of an electrode assembly; a second electrode lead, one end of which is connected to the other end of the first electrode lead, and the other end protrudes to the outside of a battery case accommodating the electrode assembly; and a connecting portion that connects the first electrode lead and the second electrode lead to each other. The connecting portion is formed by curing an adhesive applied between the first electrode lead and the second electrode lead, wherein the adhesive is formed by mixing a conductive material and a solvent. The solvent is formed by mixing a polymer and a diluent, and includes 5wt% to 15wt% of the diluent.

The invention discloses an electrolyte-resistant lithium battery special-shaped adhesive tape and a preparation method thereof. The electrolyte-resistant lithium battery special-shaped adhesive tape comprises a base layer; the base layer is in a three-dimensional shape; the base layer comprises effective components in parts by weight: 50-80 parts of natural rubber; 12-20 parts of styrene-butadiene rubber; 7-10 parts of TPI; 4-7 parts of acrylic staple fibers; 7-10 parts of micron fillers; and 32-45 parts of functional additives; the preparation method comprises the steps of forming the base layer: a prefabrication step of dispersing the acrylic staple fibers to obtain acrylic staple fiber pre-dispersed suspension; and three-time mixing to obtain the base layer; the electrolyte-resistant lithium battery special-shaped adhesive tape can be used to connect objects in different spaces and different three-dimensional shapes, has good bonding force, is not corroded, and has good electrolyte resistance.

The invention discloses a salt-resistant disperse printing thickening agent and a preparation method thereof, and belongs to the technical field of textile dyeing and printing auxiliaries. The raw materials comprise the following components: 3%-5% of polyethylene glycol-6000, 1%-3% of hexamethylene diisocyanate, 0.02%-0.05% of a catalyst organic bismuth, 0.5%-2% of hydroxyethyl acrylate, 10%-20% of an unsaturated acidic monomer, 15%-30% of a neutralizing agent, 1%-5% of octadecyl methacrylate, 3%-5% of methyl methacrylate, 3%-6% of Span-80 and 0.1%-0.6% of sodium hydrogen sulfite. The cleaning agent is prepared from the following components in percentage by weight: 0.1-0.6% of sodium persulfate, 8-15% of odorless kerosene, 2-5% of Tween-80 and the balance of deionized water. According to the salt-resistant disperse printing thickening agent and the preparation method thereof disclosed by the invention, a novel cross-linking agent is obtained through polycondensation reaction of polyethylene glycol-6000, hexamethylene diisocyanate and hydroxyethyl acrylate, and then the cross-linking agent is introduced into a polyacrylate main chain through the polycondensation reaction, so that the salt-resistant disperse printing thickening agent is obtained. Therefore, the thickening capacity and electrolyte resistance of the product are improved by utilizing the combined action of the polyurethane thickening agent and the acrylate thickening agent.