5679 results about "Sulfonic acid ester" patented technology

To provide an onium salt which is used for a chemically amplified resist composition having excellent solvent solubility, high sensitivity, high contrast, and excellent lithographic performances such as exposure latitude and linewidth roughness, in photolithography using high-energy radiation, a chemically amplified resist composition comprising the onium salt as a photoacid generator, and a pattern forming process using the chemically amplified resist composition.SOLUTION: An onium salt having the following formula (1) is provided. [R1-R12 independently represent H, halogen, or a C1-C20 hydrocarbyl group optionally including a heteroatom; one of R13 and R14 represents a substituent having a terminal sulfonic acid anion; the other represents H, halogen, or a C1-C20 hydrocarbyl group optionally including a heteroatom; and Z+ represents an onium cation.]SELECTED DRAWING: None

The invention discloses a self-assembled monomolecular layer material with an asymmetric intermediate core and a preparation method and application thereof, and belongs to the field of solar cells. The self-assembled monomolecular layer material is formed by combining an asymmetric intermediate core with anchoring groups such as phosphonic acid and sulfonic acid, has good hydrophobicity and high light transmittance, can be used as a hole transport layer material, and is used for preparing organic solar cells and perovskite solar cells with p-i-n structures, the organic solar cell achieves the maximum energy conversion efficiency of 18.9%, shows excellent environmental stability, still keeps 95% or above of the initial performance after being stored in air for 480 h, and is far superior to a traditional device based on a PEDOT: PSS interface layer. By designing and developing a series of self-assembled monomolecular layer materials with asymmetric intermediate cores, the energy conversion efficiency and environmental stability of the solar cell can be remarkably improved.

The invention relates to the technical field of drilling fluids, and discloses a lignite-based modified filtrate reducer for a drilling fluid and a preparation method of the lignite-based modified filtrate reducer. The lignite-based modified filtrate reducer for the drilling fluid is obtained by stirring and mixing the lignite grafted copolymer, the hydroxy propyl cellulose and the graphene oxide, drying and crushing. The steric effect generated by an oxazine ring, a pyridine ring, a triazine ring, a benzene ring and a pyrrole ring grafted into the lignite improves the temperature resistance and salt resistance of the filtrate reducer; the dispersing capacity of clay particles in a drilling fluid system is improved through sulfonic acid hydrated groups, and high-temperature coalescence of drilling fluid clay due to the high-temperature effect is avoided; a sulfonic acid anion group and a quaternary ammonium salt cation group are introduced into the filtrate reducer at the same time, so that the filtrate reducer can form a salt internal bond under the action of electrostatic force, and the salt resistance of the filtrate reducer is improved; the nano silicon dioxide increases the rigidity of the filtrate reducer, so that the filtrate reducer is not easy to curl under the conditions of high temperature and high salt.

The invention discloses a compound represented by a formula (1), or a tautomer, a mesomer, a raceme, an enantiomer, a diastereoisomer, or a mixture form thereof, or a pharmaceutically acceptable salt, a prodrug or a solvate thereof, the structure of the formula (1) is represented as follows: # imgabs0. Strong hydrophilic sulfonic acid inner salt and / or phosphoric acid inner salt side chains are introduced at the position of (AAA and the like)-PAB (self-destruction group), so that the druggability (including hydrophilicity and stability) of the antibody drug conjugate corresponding to the compound is greatly enhanced, the in-vivo drug removal effect is reduced, and the tumor treatment effect is improved.

A advanced fuel cell (AFC) assembly comprises a variety of features improving its performance, reliability, durability, and manufacturability include an ion exchange membrane such as a proton exchange membrane comprising polymers of perfluorinated sulfonic acid or hydrocarbon compounds supported by an inert endoskeletal structure of greater mechanical strength preventing deformation damage from handling, temperature cycling, and ionomer swelling and contraction from humidity cycling. The endoskeleton may be attached to wider exoskeletal pillars used for singulating one membrane from another after fabrication and to a thicker handle used to transport the membrane during processing prior to separation. Other AFC features include a asymmetric catalyst coated membrane inhibiting fuel cross over, oxygen back streaming, and CO atmospheric poisoning; a graded heterogenous gas diffusion layer for enhanced charge and gas transport; and a self-aligned gasket-less assembly with integrated sealant preventing gas leakage.

The invention relates to the technical field of fracturing fluids, and discloses a preparation method of a temperature-resistant and salt-resistant fracturing fluid, which comprises the following steps: carrying out polymerization reaction on acrylamide, acrylic acid and an acrylamide sulfonic acid monomer to obtain a polymer thickening agent, and compounding the polymer thickening agent with a cross-linking agent, a clay stabilizer and the like to obtain the temperature-resistant and salt-resistant fracturing fluid. The polymer thickening agent contains long-chain alkyl, a physical cross-linked spatial network structure can be formed through a hydrophobic association effect, the hydrodynamic volume is increased, a good tackifying effect is achieved, and after high-speed shearing, the long-chain alkyl can be cross-linked again to form a spatial network structure, so that a solution still keeps very high apparent viscosity, and the viscosity of the solution is improved. Good anti-shearing performance is realized. The acrylamide sulfonic acid monomer contains a sulfonate group and is used as a temperature-resistant and salt-resistant monomer, so that the polymer thickening agent has good temperature resistance and salt resistance, and the fracturing fluid still keeps relatively high apparent viscosity after being subjected to high-temperature heat treatment and in formation water with high salinity.

The invention relates to a flame-retardant inorganic quick-setting material and a preparation method thereof, and the flame-retardant inorganic quick-setting material is prepared from the following raw materials: sulphoaluminate cement, aluminum-magnesium hydrotalcite, phosphorus slag powder, waste PBO fiber, an accelerator, a water reducer, a functional auxiliary agent, and 3, 3 '-diamino-4, 4'-difluorodiphenyl sulfone. The functional auxiliary agent comprises structural units introduced by the following monomers: 3-[N, N-dimethyl-[2-(2-methylpropyl-2-enoyloxy) ethyl] ammonium] propane-1-sulfonic acid inner salt, diphenyl (4-vinyl phenyl) phosphine oxide, 1, 3-bis (oxirane methyl)-5-(2-allyl)-1, 3, 5-triazine-2, 4, 6 (1H, 3H, 5H)-triketone, 10-(4-vinyl phenyl)-10H-phenoxazine and itaconic acid. The material is high in strength, remarkable in rapid hardening and flame-retardant effect, and safe and environment-friendly to use.

The invention relates to the technical field of oilfield chemistry, and discloses a graft modified cellulose filtrate reducer and a preparation method thereof.The preparation method comprises the following steps that modified hydroxyethyl cellulose, 2-acrylamide-2-methyl propane sulfonic acid, dimethyl diallyl ammonium chloride, alkenylated cardanol and N, N '-methylene bisacrylamide are added into deionized water, stirring is conducted, and a mixture is obtained; the preparation method comprises the following steps: adding cellulose into a reaction kettle, stirring for 10-15 minutes at the temperature of 40-60 DEG C at the speed of 300-400 rpm, dropwise adding ammonium persulfate and sodium hydrogen sulfite into a system, and continuously reacting for 4-6 hours to obtain the grafted modified cellulose filtrate reducer. The filtrate reducer disclosed by the invention has good high temperature resistance and salt resistance.

The invention provides sulfonated cellulose. The sulfonated cellulose is obtained by etherifying alkalized cellulose with water-soluble halogenated sulfonate. Compared with the prior art, the sulfonated cellulose provided by the invention contains sulfonic acid groups, hydroxyl groups and other groups, so that when the sulfonated cellulose is used in the drilling fluid, the filter loss of the drilling fluid can be effectively controlled, and meanwhile, the salt pollution resistance, especially the calcium ion pollution resistance, of the drilling fluid can be improved; in addition, sulfonic groups in the product are also beneficial to improving the thermal stability of the drilling fluid, and the application range is expanded. In a word, compared with carboxymethyl cellulose for drilling fluid, sulfonated cellulose provided by the invention has obvious temperature resistance and high-valence metal ion resistance.

The invention discloses a preparation method of a degradable transparent conductive polymer film, and belongs to the technical field of film preparation. Preparing dispersion liquid I through graphene oxide quantum dots; preparing a dispersion liquid II from polyaniline nanofibers; dissolving pyrrole and toluenesulfonic acid in N, N-dimethylformamide to prepare a reaction solution, adding the dispersion liquid I and the dispersion liquid II, stirring, and adding ferric chloride hexahydrate to obtain a reaction solution; adjusting the pH value of the reaction solution to 1.5, and heating to obtain a polypyrrole solution; preparing cellulose acetate, polyvinyl alcohol and N, N-dimethylformamide to obtain a cellulose acetate solution; mixing the polypyrrole solution and the cellulose acetate solution, adding glutaraldehyde to obtain a mixed solution, and pouring the mixed solution into a mold to prepare a composite wet film; and putting the composite wet film into a hot-pressing forming machine for hot-pressing to generate the polymer film. The conductive polymer film prepared by the invention can be applied to the fields of supercapacitor electrode materials, electromagnetic shielding materials, flexible sensors and the like, and provides a new high-performance material choice for the development of related fields.

The invention relates to the technical field of lithium-sulfur batteries, and discloses a sulfonyl ZIF-8 metal organic framework material, a lithium-sulfur battery diaphragm and a preparation method of the lithium-sulfur battery diaphragm. The preparation method of the sulfonyl ZIF-8 metal organic framework material comprises the following steps: dissolving a metal precursor and a mixed ligand in an organic solvent, and carrying out a coordination reaction under the action of organic alkali; solid is collected, washed and dried, and the sulfonic group ZIF-8 metal organic framework material is obtained. The metal precursor is soluble zinc salt; the mixed ligand comprises 2-methylimidazole and an imidazole derivative containing a sulfonic acid group. The sulfo group ZIF-8 metal organic framework material is prepared through a ligand doping strategy and is used for functional modification of the lithium-sulfur battery diaphragm; the shuttle behavior of lithium polysulfide (LiPS) can be effectively inhibited through the electrostatic repulsion effect of sulfonic acid groups and the synergistic effect of high-polarity adsorption sites; and the migration of Li < + > and the conversion efficiency of LiPS are remarkably promoted by an efficient ion transmission network, so that the cycle performance of the lithium-sulfur battery is improved.

The invention belongs to the field of polymer electrolyte membranes, and particularly relates to a benzimidazole micromolecule-based proton exchange composite membrane for electrolyzing water and a preparation method thereof. The preparation method comprises the following steps: firstly synthesizing 5, 5 '-bis [2-(2-hydroxy-5-sulfophenyl) benzimidazole], then synthesizing sulfonated polyetheretherketone, and finally preparing the proton exchange composite membrane based on benzimidazole micromolecules. The benzimidazole rigid rod-like micromolecules with sulfonic acid groups are designed and prepared by utilizing the advantages of heat resistance, acid resistance, alkali resistance and better dissolvability than PBI of the benzimidazole micromolecules, and the benzimidazole rigid rod-like micromolecules are added into a polymer matrix as a filler to prepare the composite membrane, so that the proton conductivity, the swelling resistance and the oxidation stability of the original polymer membrane are improved.

The invention discloses a preparation method of 3, 4-difluoro-2-methoxyphenylacetic acid, and belongs to the technical field of organic synthesis. The preparation method comprises the following steps: reacting 2, 3-difluorophenol with 3, 4-dihydropyran under the action of sulfonic acid resin to generate an intermediate 2-(2, 3-difluorophenoxy) pyran; then lithiating, reacting with tert-butyl 2-bromoacetate, and performing acidolysis to obtain a 3, 4-difluoro-2-hydroxyphenylacetic acid intermediate; and finally reacting with a methylation reagent in the presence of alkali to generate the target compound 3, 4-difluoro-2-methoxyphenylacetic acid. The preparation method has the advantages that the route is overall reasonable, the preparation method comprises three steps, and a simple and effective new route is provided for the preparation of the 3, 4-difluoro-2-methoxyphenylacetic acid.

The invention relates to the technical field of low-carbon olefin hydration, and discloses a modified hydrated filler as well as a preparation method and application thereof. The modified hydrated filler comprises a filler matrix, and a silane layer, a modified layer A and a modified layer B which are sequentially coated on the outer surface of the filler matrix from inside to outside, the modified layer A contains a pyrrolyl group, an amido group and a furyl group; the modified layer B contains phenoxy, pyrrolyl, furyl, sulfonic acid group, phosphate group and acylamino. The modified hydrated filler provided by the invention can obviously improve the mixing effect of water and alkene and promote the improvement of the yield of low-carbon alcohol.

The invention discloses a single-ion conductor polymer, a ternary composite binder solution, high-solid-content sulfide electrolyte slurry and a wet film forming method and application thereof, and belongs to the technical field of all-solid-state lithium batteries. The key technical problems in the wet membrane preparation of the sulfide electrolyte are solved through an innovative solvent-binder synergistic system, and the method specifically comprises the steps that 1, through the synergistic effect of a non-polar solvent and a weak-polar solvent, low-viscosity coating of high-solid-content slurry is achieved while the chemical stability of the sulfide electrolyte is guaranteed; 2, a poly (lithium styrenesulfonate-butyl acrylate), styrene butadiene rubber and polyisobutene ternary composite binder is designed, a lithium ion transmission channel is provided through a lithium sulfonate group, a benzene ring structure in the styrene butadiene rubber enhances the mechanical strength, long-chain alkane in the polyisobutene improves the interface adhesive force, and the mechanical strength is improved; the three components cooperate to realize balance of mechanical and electrochemical properties of the electrolyte membrane, so that the prepared electrolyte membrane has low porosity, high ionic conductivity and mechanical strength.

The invention discloses a method for detecting glufosinate-ammonium residues in coffee in dual modes of colorimetry and chemiluminescence, and belongs to the technical field of chemical analysis and detection.The method comprises the steps that Schiff base formed by 4-aminoantipyrine and glutaraldehyde serves as a complexing agent of Cu < 2 + >, and then a copper-doped carbon dot Cu-CDs nano-enzyme is prepared through microwave digestion; according to the present invention, the Cu-CDs nano-enzyme has excellent peroxidase-like activity, can oxidize the colorless 2, 2 '-biazo-bis-3-ethylbenzothiazoline-6-sulfonic acid into the blue-green oxidized ABTS, and can improve the chemiluminescence intensity of the reaction of N-(4-aminobutyl)-N-ethylisoluminol and H2O2 by nearly 100 times when the Cu-CDs nano-enzyme is used as the chemiluminescence catalyst; based on the inhibition effect of glufosinate-ammonium on the activity of Cu-CDs POD, a sensitive and rapid colorimetric and chemiluminescence two-channel GM detection technology is developed, and the method has potential application value in the aspect of coffee safety monitoring.

The invention relates to the technical field of electrolytes, and discloses a sulfonate additive containing a silicon-oxygen bond, an electrolyte and an electrochemical device, the additive is a sulfonate organic compound containing the silicon-oxygen bond, the additive is added into the electrolyte, the gas production effect of battery formation can be inhibited, and the high-temperature cycle performance of a battery can be improved. According to the sulfonate additive containing the silicon-oxygen bond, the use amount of a high-risk substance 1, 3-propane sultone in an electrolyte can be reduced, the use amount of the 1, 3-propane sultone can be remarkably reduced on the premise that the formation gas production effect and the high-temperature cycle performance of a battery are not remarkably changed, and the use amount of the 1, 3-propane sultone can be remarkably reduced on the premise that the high-temperature cycle performance of the battery is remarkably improved. The 1, 3-propane sultone belongs to a high-risk cancerogenic substance, and the safety risk of the battery can be remarkably reduced by reducing the dosage of the 1, 3-propane sultone in the electrolyte.

The invention discloses a soluble alkaline salt scale inhibitor and a preparation method thereof, and belongs to the technical field of oilfield chemistry. The soluble alkaline salt scale inhibitor is prepared from amphiphilic modified graphene oxide, a surfactant, inorganic salt and deionized water, the amphiphilic modified graphene oxide contains a large amount of carboxyl groups, sulfonic acid groups, hydroxyl groups and the like, and has good metal ion chelating property; meanwhile, through the hydrophobic association effect and hydrogen-bond interaction between modified graphene grafted long carbon chains, the bonding probability between sodium ions of the soluble saline-alkali salt and bicarbonate radicals, carbonate radicals and chloride ions is further weakened, and through the synergistic effect of the amphiphilic modified graphene oxide, the surfactant and the inorganic salt, the salt scale inhibition effect is further improved; the method is especially suitable for soluble alkali salt water quality conditions of high temperature, high alkali and high salinity, can solve the problems of oilfield water injection, fracturing flowback strata and wellbore salt deposition, and has a good popularization prospect.

The invention belongs to the field of MOF (Metal Organic Framework) films, and discloses a two-dimensional metal-organic framework film composite film as well as a preparation method and application thereof. The preparation method comprises the following steps: dispersing ZIF-L nanosheets into a water phase solution containing MPD, camphor-10-sulfonic acid and TEA to obtain an MOF water phase monomer solution; adding TMC into an n-hexane reagent to obtain an organic phase monomer solution; fixing the wet PES ultrafiltration membrane, injecting the MOF water-phase monomer solution, carrying out suction filtration below the PES ultrafiltration membrane, removing the excess solution, keeping the suction filtration state, and immediately pouring the organic-phase monomer solution onto the surface of the PES ultrafiltration membrane from the upper part for reaction; and drying the obtained film at 60-80 DEG C for 10-15 minutes to obtain the two-dimensional metal-organic framework film composite film. The composite membrane has a good separation effect and can be applied to textile printing and dyeing wastewater treatment.

The invention provides a proton exchange membrane with high proton conductivity and high durability and a preparation method thereof. The preparation method comprises the following steps: (a) mixing or / and reacting sulfonated polymer dispersion liquid and perfluorinated sulfonic acid resin dispersion liquid to obtain sulfonated polymer modified perfluorinated sulfonic acid resin membrane solution or membrane dispersion liquid; the mass ratio of the sulfonated polymer in the sulfonated polymer dispersion liquid to the perfluorinated sulfonic acid resin in the perfluorinated sulfonic acid resin dispersion liquid is (0.5-50): (50-99.5); and (b) directly forming a film from the sulfonated polymer modified perfluorosulfonic acid resin film solution or the film dispersion liquid, or coating the sulfonated polymer modified perfluorosulfonic acid resin film solution or the film dispersion liquid and a skeleton enhanced film to form the film. On the premise of ensuring high conductivity, the temperature resistance of the membrane is improved, the hydrogen permeability and swelling ratio are reduced, and the generation of free radicals is reduced, so that the durability of the membrane is indirectly improved.

The invention provides high-stability ceramic ink and a preparation method thereof. The high-stability ceramic ink is prepared from the following components in parts by mass: 30 parts of inorganic pigment, 2 to 8 parts of sulfonic block polymer, 1 to 3 parts of polyvinyl alcohol grafted glycidyl methacrylate and 50 to 70 parts of organic solvent, wherein the polyving akohol grafted glycidyl methacrylate contains a plurality of epoxy groups. According to the high-stability ceramic ink, by constructing a composite system containing a sulfonic block polymer dispersing agent and polyvinyl alcohol grafted glycidyl methacrylate, stable dispersion of an inorganic pigment, construction of a thermal anchoring structure of an ink-jet pattern area and optimization of glaze layer fusion compatibility are realized; the high-stability ceramic ink effectively solves the problems of fuzzy pattern boundary and glaze-ink separation in the high-temperature sintering process of the existing ceramic ink, so that the high-stability ceramic ink has good storage stability and glaze-ink separation resistance.

The invention provides a binder, a negative pole piece and a battery, the binder comprises a polyimide binding material, the polyimide binding material comprises a first structural unit from an amino sulfonic acid monomer, a second structural unit from an amino monomer, and a third structural unit from an anhydride monomer; the mass percentage content of sulfonate radicals in the polyimide binding material is 15-35 wt%. The binder provided by the invention has a good binding effect, and is beneficial to improving the stability of the battery.

The invention provides a leaching agent for removing thallium and beryllium in lithium slag and application. The leaching agent comprises a first leaching agent and a second leaching agent. The first leaching agent is an organic acid solution, and organic acid comprises carboxyl and at least one group of hydroxyl, sulfydryl, carbonyl and sulfonic acid group; the organic acid is single organic acid or mixed organic acid; the second leaching agent comprises a cationic agent and a reducing agent, the cationic agent can form at least one of K < + >, NH4 < + >, Mg < 2 + >, Na < + > and Fe < 3 + > in an aqueous solution, and the reducing agent comprises an inorganic reducing agent and / or an organic reducing agent. Organic acid in the first leaching agent can destroy the crystal structure of the lithium slag, and meanwhile groups such as carboxyl and hydroxyl can be complexed with thallium and beryllium ions so that the thallium and beryllium ions can be dissolved out more easily. On the basis, cations in the second leaching agent and the reducing solution accelerate the release of thallium and beryllium through ion exchange and reduction effects. The leaching agent can remove thallium and beryllium in the lithium slag at the same time, and the removal rate of thallium and beryllium is high.

The invention relates to the technical field of all-vanadium redox flow batteries, in particular to a sulfonated polybenzimidazole proton exchange membrane as well as a preparation method and application thereof. The proton exchange membrane structurally comprises a polybenzimidazole polymer main chain and a sulfonic acid group, the free volume of the polybenzimidazole polymer is regulated and controlled by synthesizing raw materials with different structures, and the polybenzimidazole proton exchange membrane is obtained by sulfonating the polybenzimidazole polymer. Aiming at the problems of cross permeation of vanadium ion electrolyte of a positive electrode and a negative electrode of the all-vanadium redox flow battery, capacity attenuation of the all-vanadium redox flow battery and low energy conversion efficiency, the preparation method comprises the following steps: constructing a polybenzimidazole polymer main chain by selecting raw materials with high rigidity and high free volume; the mechanical property of the polybenzimidazole membrane is improved while a rapid ion channel is constructed in the polymer membrane, and water molecules can be contained to limit swelling of a membrane material.

The invention discloses a whisker carbon nanotube doped sulfonated polyetheretherketone water lubricated bearing material and a preparation method, and belongs to the technical field of high polymer materials, and the preparation method comprises the steps of dispersion of whisker carbon nanotubes, doping of the whisker carbon nanotubes, carbon fibers and graphite, cold press molding, sintering and the like. Hydrophilic sulfonic acid groups and whisker carbon nanotubes with branched structures are introduced into the sulfonated polyether-ether-ketone material, so that the sulfonated polyether-ether-ketone material effectively adsorbs hydrated cations in seawater, a hydrated lubricating layer is formed on the surface of the material, and interfaces of graphite, carbon fibers and polymers doped in the material are bridged and toughened. Besides, the whisker carbon nanotubes are dispersed by means of an alkylbenzene sulfonate dispersant, so that sulfonic acid groups can interact with the whisker carbon nanotube surface dispersant, the binding property of the polyether-ether-ketone material and the whisker carbon nanotubes is enhanced, and the surface strength of the material can be improved. Therefore, the problems that an existing polyether-ether-ketone composite material is poor in bearing capacity and serious in abrasion at a low rotating speed are solved.

The invention provides a proton exchange membrane electrode and application of the proton exchange membrane electrode in water electrolysis hydrogen production. The invention particularly relates to application of the proton exchange membrane electrode prepared by adopting a specific preparation process in water electrolysis hydrogen production. The membrane electrode used in hydrogen production by electrolysis of water adopts long-chain and short-chain perfluorinated sulfonic acid resin, has adjustable hydrophilicity, is beneficial to the generation of catalytic reaction and rapid discharge of generated gas, and improves the gas-liquid mass transfer effect of the membrane electrode; the adopted membrane electrode reduces the occupation of bubbles on the surface and improves the performance expression of the membrane electrode.

The invention provides a sodium ion battery which comprises a positive pole piece, a negative pole piece and a sodium ion battery electrolyte, the positive pole piece comprises a positive current collector and a positive material layer, and the positive material layer comprises a positive active material and a positive additive Na2SiF6; the sodium-ion battery electrolyte comprises sodium salt, a non-aqueous organic solvent and an electrolyte additive, the sodium salt comprises fluorine-containing sulfimide sodium salt and NaPF6, the electrolyte additive comprises a sulfonic electrolyte additive, and the sodium-ion battery electrolyte meets the conditions that a is larger than or equal to 0.1 and smaller than or equal to 5, and b is larger than or equal to 0.1 and smaller than or equal to 5; a is the mass percentage content of the sulfonic electrolyte additive in the sodium-ion battery electrolyte; and b is the mass ratio of the fluorine-containing sulfimide sodium salt to NaPF6 in the sodium-ion battery electrolyte. The fluorine-containing sulfimide sodium salt and the sulfonic acid-based electrolyte additive form a complete and high-temperature stable protective film on the positive electrode material layer, and meanwhile, the fast charging performance and the high-temperature cycle performance are improved.

The invention discloses a waterborne acrylic acid-polyurethane composite emulsion, a waterborne acrylic acid-polyurethane composite paint, and a preparation method and application of the waterborne acrylic acid-polyurethane composite emulsion. According to the preparation method of the water-based acrylic acid-polyurethane composite emulsion, a core-shell structure polyacrylic acid-polyurethane emulsion is synthesized in situ by utilizing a core-layer monomer pre-emulsion and a shell-layer monomer pre-emulsion through a semi-continuous seed emulsion polymerization method. The shell layer of the core-shell structure has hydrophilic functional groups including carboxyl, sulfo group and hydroxyl, so that the emulsion has a self-thickening effect, and rheological properties and good constructability required by the coating can be provided. A nonionic hydrophilic group composite sodium sulfonate type post chain extender is selected as waterborne polyurethane, the emulsifying capacity is high, the emulsion stability is good, strong-acid monomers such as acrylic acid and methacrylic acid can be selected, high-thixotropy resin can be obtained through adjustment, meanwhile, the PA content can be effectively increased, the water resistance and weather resistance of a paint film can be improved, and the water resistance and weather resistance of the paint film can be improved. Therefore, the requirements of the automobile paint on moisture resistance, especially high-pressure flushing resistance, are met.

The invention discloses segmented copolymer grafted graphene oxide and a preparation method and application thereof, and relates to the technical field of cement-based material preparation.The method comprises the following steps that graphene oxide is dispersed in a solvent, an RAFT reagent is added, and RAFT reagent modified graphene oxide is prepared; adding a polyether copolymer to prepare copolymer grafted graphene oxide; and adding poly (propanesulfonic acid) to prepare the segmented copolymer grafted graphene oxide. The graphene oxide is chemically modified, the block copolymer is grafted through RAFT polymerization, the polyether-polyacrylic acid block copolymer is synthesized, the polyether-polyacrylic acid block copolymer has a good promotion effect in the cement hydration process, the workability of a cement-based material can be improved, the mechanical property of the cement-based material can be enhanced, and good economic benefits can be obtained. The invention solves the problem that the performance of the cement-based material improved by physical modification and chemical modification of graphene oxide in the prior art is not ideal.

The invention discloses a sulfonate-based electrolyte and a preparation method and application thereof, and belongs to the technical field of electrolyte preparation, the electrolyte comprises a solute, a sulfonate-based compound and a cosolvent, the mass fraction of the solute is 1-90%, the mass fraction of the sulfonate-based compound is 0.1-99%, and the mass fraction of the cosolvent is 0-99%. According to the sulfonate-based electrolyte as well as the preparation method and the application thereof, the sulfonate-based solvent is used as a main solvent, a cosolvent, an additive and the like to develop a novel electrolyte, so that the balance between strong solvation and rapid charging capability of the electrolyte is promoted, and a high-voltage battery with high energy density is developed.