277 results about "Hydrophilic polymers" patented technology

The invention belongs to the field of lithium resource recovery, and particularly relates to preparation, application and a recovery method of a high-hydrophilicity lithium extraction electrode. The preparation method of the lithium extraction electrode comprises the following steps: sequentially adding a hydrophilic polymer and a cross-linking agent into a solvent, heating and stirring to a homogeneous phase to obtain a binder solution, adding a conductive agent and a lithium extraction active material into the binder solution, uniformly stirring to obtain lithium extraction slurry, coating a current collector with the prepared lithium extraction slurry, and drying to obtain the lithium extraction electrode. And drying to obtain the high-hydrophilicity lithium extraction electrode. The hydrophilic polymer is used for directly bonding the electrode material, so that the electrode is wholly hydrophilic from inside to outside, the prepared electrode material greatly improves the hydrophilicity of the lithium extraction electrode and accelerates the lithium extraction reaction rate, and the electrode material has the characteristics of simple preparation method, low cost, high lithium extraction efficiency, easiness in recovery and environmental protection; and efficient selective lithium extraction can be realized in various lithium-containing solutions.

The invention provides a pollution-resistant separation membrane and a preparation method thereof, and the method comprises the following steps: preparing and uniformly mixing a buffer salt solution of protein and a hydrophilic polymer, then adding a reducing agent, and carrying out a stirring reaction for 1-20 min, so that the protein and the hydrophilic polymer are co-assembled in the solution to form an aggregate with an adhesion characteristic, thereby obtaining a modified solution; wherein the mass ratio of the protein to the hydrophilic polymer is not more than 5: 1 and not less than 1: 25; the surface of the porous filter material is coated with the prepared modification liquid for 10-200 s, the modification liquid adheres to the surface of the porous filter material to form a pollution-resistant coating, and the separation membrane with the pollution-resistant coating is obtained after washing; the preparation method of the pollution-resistant separation membrane provided by the invention has the advantages of environmental protection, simple operation, good pollution-resistant effect, easy industrial production and the like.

The present invention relates to a binder composition for a positive electrode comprising a polymer P1 containing repeating units derived from vinylidene fluoride and a hydrophilic polymer P2 containing repeating units derived from at least one monomer of formula R1R2C = C (R3) C (O) R (I) wherein R1, R2 and R3 are independently selected from H and C1-C5 alkyl; r is selected from-NHC (CH3) 2CH2C (O) CH3,-NR 'R "or-OR', where R 'and R" are independently selected from H and C1-C18 alkyl optionally substituted by one or more hydroxyl, thiol or amino functional groups or five to six membered heterocycles comprising at least one nitrogen atom in the ring, characterized in that the hydrophilic polymer P2 has a weight average molecular weight greater than 30000 g / mol, advantageously greater than 50000 g / mol, preferably greater than 65000 g / mol, more preferably greater than 80000 g / mol.

The invention discloses ceramsite lightweight aggregate structural concrete and a preparation method thereof, and belongs to the technical field of concrete. The ceramsite lightweight aggregate structural concrete is prepared from the following raw materials in parts by mass: 240 to 270 parts of cement, 25 to 35 parts of mineral powder, 80 to 95 parts of fly ash, 210 to 250 parts of coal gangue crushed materials, 725 to 805 parts of modified coal gangue ceramsite, 10 to 30 parts of waste rubber materials, 3.5 to 5 parts of water reducing agents and 165 to 180 parts of water. The modified coal gangue ceramsite is obtained by coating the surface of a coal gangue ceramsite matrix with an epoxy resin layer and then grafting a hydrophilic polymer, the porosity of the coal gangue ceramsite matrix is 40-60%, and the aperture ratio is 1.5-6%. The epoxy resin layer on the surface of the modified coal gangue ceramsite provides an anti-permeability barrier, the hydrophilic polymer on the surface adjusts the wettability of the ceramsite, the binding force with other components of the concrete is improved, and the concrete has excellent shrinkage and dry crack resistance.

The invention provides a foam stabilizer raw material system, a method for preparing a nano foam stabilizer, the nano foam stabilizer and application. The raw material system comprises inorganic nanoparticles, an organic monomer, an initiator, a catalyst and a hydrophobic modifier, wherein the organic monomer has an electrically neutral hydrophilic group. By applying the technical scheme of the invention, the foam stabilizer prepared by the system is composed of nanoparticles, the nanoparticles have hydrophobic groups and can generate hydrophobic interaction with the tail part of a foaming agent, and the particles also have electrically neutral hydrophilic polymer groups, so that on one hand, the foam stabilizer can play a role in temperature resistance and salt resistance; and on the other hand, compared with some anionic polymers, such as a 2-acrylamido-2-sodium methylpropanesulfonate polymer, charge repulsion with a surfactant head group can be reduced or avoided, the adsorption effect of the nanoparticles on a gas-liquid interface can be promoted, and the stability of the foam can be improved.

The invention provides an amphiphilic modified silane coupling agent as well as a preparation method and application thereof, and belongs to the field of material chemistry. The invention provides an amphiphilic modified silane coupling agent preparation method, which comprises: in the presence of an acid-binding agent and a first solvent, carrying out a reaction on a hydroxyl-containing hydrophilic polymer and halogenated acyl halide to obtain an ATRP initiator; in the presence of a metal salt catalyst, a ligand and a second solvent, reacting an ATRP initiator with an acrylate monomer to obtain an active macromolecule containing an amphiphilic group; in the presence of an alkali reagent and a third solvent, the active macromolecules containing the amphiphilic groups react with a silane compound containing amino groups, and the amphiphilic modified silane coupling agent is obtained. The silane coupling agent provided by the invention can be effectively applied to a coating, not only can improve the interface performance between an inorganic matter surface and an organic coating, but also can effectively improve the tensile strength, the waterproof and anti-fouling properties and the tensile strength after re-coating of a coating.

The invention discloses a washable waterproof moisture-permeable composite material, a preparation method thereof, a waterproof moisture-permeable fabric and clothes. The washable waterproof moisture-permeable composite material comprises a three-layer composite structure, the ceramic coating comprises first ceramic particles, the hydrophilic coating comprises second ceramic particles and a hydrophilic polymer, the particle size D50 of the first ceramic particles is larger than the maximum aperture of the microporous membrane, the particle size D50 of the second ceramic particles is smaller than 1000 nm, and the particle size D50 of the hydrophilic polymer is larger than the maximum aperture of the microporous membrane. The ratio of the particle size D50 of the first ceramic particles to the particle size D50 of the second ceramic particles is 0.1-10. The washable waterproof moisture-permeable composite material can be used for preparing a waterproof breathable fabric. According to the washable waterproof moisture-permeable composite material disclosed by the invention, the peel strength of the hydrophilic coating and the washable performance of the whole washable waterproof moisture-permeable composite material are effectively improved while good air permeability is maintained.

The invention discloses a metal organic framework material composite membrane as well as a preparation method and application thereof. The metal organic framework material composite membrane provided by the invention comprises a substrate, a hydrophilic layer, an adsorption layer and a fixing layer which are sequentially stacked, the fixing layer covers the surface of the adsorption layer and is connected with the hydrophilic layer; the adsorption layer contains a carbonized metal organic framework material, and the fixing layer contains a hydrophilic polymer. The carbonized metal organic framework material is used as the adsorption layer, and the material has a rich mesoporous structure and a high specific surface area, so that the adsorption activity of the composite membrane is improved; the hydrophilic layer is matched with the fixing layer, so that the adsorption layer can be simply, efficiently and firmly fixed in the membrane material, the composite membrane with good adsorption performance, high mechanical performance and good stability is formed, and the composite membrane has a good application prospect in gas adsorption and enrichment, especially in krypton and / or xenon adsorption and enrichment.

In some aspects, the present disclosure pertains to systems for forming hydrogels that comprise (a) a radiopaque polyamino compound and (b) a reactive polymer comprising a plurality of hydrophilic polymer segments and a plurality of reactive moieties, wherein the reactive moieties are reactive with amino groups of the radiopaque polyamino compound, and wherein the radiopaque polyamino compound is produced by a method that comprises: (i) converting hydroxyl groups of a polyhydroxylated radiopaque compound to amino groups, (ii) converting vicinal diol groups (—CHOHCH2OH groups) of a polyhydroxylated radiopaque compound into hydroxyaminoethyl groups (—CHOHCH2NH2 groups), or (iii) converting vicinal diol groups of a polyhydroxylated radiopaque compound into aminomethyl groups (—CH2NH2 groups). In other aspects, the present disclosure pertains to hydrogels formed from such systems and to methods of treatment using such systems.

A method of stimulating a subterranean formation includes preparing an aqueous dispersion including one or more cellulosic nanoparticles. The cellulosic nanoparticles have respective surfaces functionalized with one or more hydrophilic polymers or ligands. one or more hydrophobic polymers or ligands, or a combination thereof. The method also includes pumping the aqueous dispersion into the subterranean formation.

A reusable urinary catheter assembly comprises a storage container defining a cavity, a hydration liquid and a reusable urinary catheter. The hydration liquid includes a disinfection medium and a hydrophilic polymer. The viscosity of the hydration liquid is 40 cP or lower. The reusable urinary catheter includes a shaft, and at least a part of the shaft is provided with a hydrophilic surface. During storage, the shaft is enclosed within the cavity in a storage position. The hydration fluid hydrates and regenerates the hydrophilic surface and disinfects the catheter. The catheter is configured to be repeatedly inserted into and removed from the storage container.

The application provides a polymer microsphere profile control water plugging agent and a preparation method and application thereof, and the preparation method comprises the following steps: dispersing molybdenum disulfide nanosheets in water, adding a template carrier to form a Pickering emulsion; performing a first polymerization reaction on the Pickering emulsion, polymer monomer A, a RAFT reagent and an initiator to obtain hydrophilic polymer grafted copolymer nanosheets; performing a second polymerization reaction on the hydrophilic polymer grafted copolymer nanosheets, polymer monomer B and an initiator in a solvent to obtain one-side polymer modified nanosheets; removing the template carrier, and performing a third reaction on the one-side polymer modified nanosheets and amino acids in water to obtain the polymer microsphere profile control water plugging agent. The polymer microsphere profile control water plugging agent prepared by the application is resistant to temperature and salt, can enter deep strata, is uniformly distributed in high-permeability layers, has good profile control and water plugging effects, and can improve recovery efficiency.

The invention provides a hydrophilic modified polytetrafluoroethylene oil removal film and a preparation method thereof. A modified layer of the hydrophilic modified polytetrafluoroethylene oil removal film is mainly prepared from the following raw materials in percentage by mass: 8-12 wt% of a hydrophilic vinyl monomer, 0.3-0.6 wt% of a cross-linking agent, 0.2-0.5 wt% of an initiator and the balance of a deionized water solvent. A new chemical grafting modification strategy is adopted, the surface of the PTFE membrane is activated through low-temperature plasma, co-grafting and cross-linking polymerization of a hydrophilic monomer and a cross-linking agent on the surface of the PTFE membrane are initiated, and a layer of firm hydrophilic polymer brush with a three-dimensional network structure is constructed on the surface of the membrane; a stable hydration layer is formed on a membrane-water interface, the PTFE membrane is endowed with excellent underwater super-oleophobic property, the oil-water separation efficiency, flux and anti-pollution capacity of the PTFE membrane are remarkably improved, the technological process is simple, and the product performance is stable.

The invention relates to the field of total heat exchange membranes for fresh air systems, in particular to a method for preparing a nanoparticle / polymer total heat exchange membrane with the assistance of a dispersing agent. A coupling agent, a dispersing agent, a hydrophilic oligomer and the modified inorganic nanoparticles are subjected to a grafting reaction in a solution, the obtained grafted inorganic nanoparticles are dispersed in a film forming component through the dispersing agent and ultrasound, and a uniformly dispersed film casting solution is obtained; and coating on a base material and drying to obtain the nano-particle / polymer total heat exchange membrane prepared by the aid of the dispersing agent. The prepared total heat exchange membrane is high in surface nanoparticle distribution uniformity, high in air blocking performance, high in moisture permeability after being grafted with the hydrophilic polymer and improved in heat exchange efficiency, and has wide application prospects in the fields of total heat exchange for a fresh air system, air dehumidification and the like.

The invention relates to the field of fuel cells, and in particular to a gas diffusion layer with good water management performance and a preparation method thereof; the gas diffusion layer comprises: a substrate layer and a microporous layer; the substrate layer comprises: a plurality of hydrophilic microchannels penetrating the substrate layer; the invention is based on the difference in response of hydrophilic polymers and polytetrafluoroethylene to shear rate in an aqueous solution system, and forms ordered hydrophilic microchannels inside carbon paper by adjusting the suction filtration speed; under high humidity conditions, the hydrophilic microchannels are conducive to the introduction of liquid water into the carbon paper and rapid discharge, and can solve the problem of water flooding at the interface between the carbon paper and the microporous layer and inside the carbon paper that cannot be solved by the prior art, and at the same time, the hydrophobicity of the local area is enhanced to form a water-free area, which is conducive to the introduction of reaction gas; under low humidity conditions, the hydrophilic polymers of the hydrophilic microchannels are more likely to combine with water to maintain a wet state, and can be used as a water storage layer to maintain membrane wetness to achieve self-humidification, thereby improving the low-humidity performance of the battery.

The invention relates to the technical field of biomedicine nanotechnology, in particular to a high-stability engineered exosome based on rigid hydrophobic anchoring and micelle disassembly and purification as well as a preparation method and application of the high-stability engineered exosome. According to the invention, a ternary surface structure of rigid hydrophobic anchoring-hydrophilic polymer spacer arm-targeting ligand (L-S-T) is constructed, cholesterol hemisuccinate or multi-branched lipid is selected as an anchoring group, and the problem that conventional phospholipid modification is easy to fall off in vivo and in an albumin-containing preparation is obviously solved; a technology of'micellar insertion after temperature control 'combined with'CMC critical concentration adjustment and purification' is adopted, lossless insertion of functional molecules is realized by utilizing thermodynamic driving force, and residual micelles are induced to be disintegrated into monomers by adjusting the concentration of a system to be lower than the concentration of critical micelles, so that efficient removal of free impurities is realized through conventional ultrafiltration. The engineered exosome has the advantages of long circulation, high targeting and excellent storage stability, and has important clinical application and commercial transformation prospects.

A CO2 separation membrane 22 separates CO2 in air in an indoor environment. A hydrophilic polymer layer 102 includes an amino acid having an amino group and being a CO2 carrier, and an aggregation inhibitor for suppressing aggregation of amino acid. A first porous film 100 carries the hydrophilic polymer layer 102. The aggregation inhibitor contains an alkali metal element. In the hydrophilic polymer layer 102, the substance amount of the alkali metal element is greater than the substance amount of the amino group.

The invention discloses a force-triggered hydrophobic block depolymerization type amphiphilic block polymer as well as a preparation method and application thereof. The force-triggered hydrophobic block depolymerization type amphiphilic block polymer is composed of three parts: a) a mechanochromic group located at the center of two blocks as a trigger depolymerization end, b) a self-degradable hydrophobic block capable of triggering depolymerization, and c) a hydrophilic polymer block. The polymer is obtained by blocking a self-degradation hydrophobic block with a DA chromophore and initiating a hydrophilic monomer to polymerize through an alpha-bromo-ester active end group at the tail end of the chromophore. The centers of the two blocks of the polymer are DA force chromophores, and a force-triggered self-degradable polymer assembly can be constructed through self-assembly in water. Under the action of ultrasonic waves, the DA chromophore end group of the assembly is broken, an r-DA reaction is induced, a furan carbonate end-capped self-degradable polymer is generated, the end group is quickly decomposed, a continuous elimination reaction is immediately triggered to depolymerize a hydrophobic block, the assembly is promoted to be degraded, and the assembly is used as a carrier material for controllably releasing drugs.

The invention belongs to the technical field of taxifolin, and discloses a taxifolin compound, a preparation method thereof and application of the taxifolin compound in the fields of relieving, oil control and senility .The taxifolin compound contains modified beta-cyclodextrin, taxifolin and auxiliary components, and the modified beta-cyclodextrin is modified through a polar group; the auxiliary component is selected from one or more of a hydrophilic polymer, an antioxidant and a targeting carrier. The taxifolin compound provided by the invention is high in inclusion rate and good in water solubility, the polar group modified beta-cyclodextrin can finely adjust the space structure of a cavity to expand an opening, the polar group modified beta-cyclodextrin has high matching degree with the molecular structure of taxifolin, a hydrophobic aromatic ring of taxifolin can enter the cavity to be combined with a hydrophobic core, and the taxifolin compound is high in inclusion rate and good in water solubility. The water solubility is good. The taxifolin compound provided by the invention is strong in anti-inflammatory ability, has a remarkable soothing effect, and also has excellent anti-aging and oil-control effects.

The present invention is an implantable medical device comprising (i) a base coat layer having an inner and outer surface, the inner surface of the base coat layer contacting the implantable medical device; (ii) a top-coat layer of a hydrophilic polymer chemically crosslinked and covalently bonded to the outer surface of the base coat layer, the hydrophilic polymer comprising an anionic polyelectrolyte; and (iii) an amount of a hydrophilic cationic drug agent added to the top-coat layer sufficient to provide an effective dosage of the drug agent for delivery to a patient, whereby the hydrophilic cationic drug agent is initially adsorbed into the anionic polyelectrolyte of the top-coat layer and the hydrophilic cationic drug agent having a release rate after the medical device is implanted within a patient's body.

The invention discloses deep-eutectic solvent supramolecular gel, a preparation method thereof and application of the deep-eutectic solvent supramolecular gel in DNA room-temperature storage, and belongs to the technical field of biological material storage. The deep-eutectic solvent supramolecular gel for embedding DNA provided by the invention comprises a deep-eutectic solvent matrix, a supramolecular gel agent and a DNA-positive salt compound water phase, the DNA-electropositive salt compound water phase is an upper phase solution obtained by mixing a DNA water solution with a hydrophilic polymer and electropositive salt and then carrying out phase separation. The deep-eutectic solvent supramolecular gel provided by the invention can effectively encapsulate DNA, can resist high temperature, enzymolysis, free radicals, microorganisms and the like erosion, and is beneficial to realizing long-term stable storage of the DNA at room temperature.

The present invention is an implantable medical device comprising (i) a base coat layer having an inner and outer surface, the inner surface of the base coat layer contacting the implantable medical device; (ii) a top-coat layer of a hydrophilic polymer chemically crosslinked and covalently bonded to the outer surface of the base coat layer, the hydrophilic polymer comprising an anionic polyelectrolyte; and (iii) an amount of a hydrophilic cationic drug agent added to the top-coat layer sufficient to provide an effective dosage of the drug agent for delivery to a patient, whereby the hydrophilic cationic drug agent is initially adsorbed into the anionic polyelectrolyte of the top-coat layer and the hydrophilic cationic drug agent having a release rate after the medical device is implanted within a patient's body.

The application provides a zwitterionic brush double hydrogel surface modified polytetrafluoroethylene (PTFE) hydrophilic antifouling hollow fiber membrane and a preparation method thereof, which can significantly improve the hydrophilicity and antifouling performance of the PTFE hollow fiber membrane. The preparation method comprises the following steps: step 1, putting pretreated PTFE membrane filaments into a PVA solution for immersion; step 2, immersing a glutaraldehyde / citric acid solution; step 3, balancing in water; step 4, immersing a PIC hydrogel solution; step 5, immersing an iron ion-containing solution again; and step 6, balancing in water. The modification method can significantly improve the water flux of the PTFE hollow fiber membrane, and the modified double hydrophilic polymer has high antifouling performance.

Provided are hydrophilic substrates provided with a hydrophilic polymer layer having controlled surface uniformity and irregularities, and methods for preparing the hydrophilic substrates. Included are hydrophilic substrates including a substrate having a surface containing at least one group represented by —N(R1)2 or —N(R2)3+ wherein each R1 or R2 is the same or different and represents a hydrogen atom or a substituted or unsubstituted hydrocarbon group optionally containing a hetero atom; and a hydrophilic polymer layer provided on the surface of the substrate.

The soil to be treated is assumed to be particularly water-containing soil such as construction sludge, which is difficult to solidify, and a soil conditioner is provided that improves the quality of the water-containing soil, thereby making it easier to handle, such as by transporting it. [Solution] A soil conditioner for modifying moist soil present in civil engineering or construction work, or soil improvement work, comprising a volume reduction agent that reduces the amount of inorganic preparation used on moist soil to reduce the volume of the modified soil, the volume reduction agent being a polymer preparation, the polymer preparation being at least one selected from the group consisting of hydrophilic polymers, water-absorbent polymers, and polymer flocculants, and the inorganic preparation comprising at least one selected from the group consisting of cement, quicklime, gypsum, paper sludge ash, and magnesium oxide.

The application discloses a kind of charged hydrophilic polymer porous membrane, its preparation method and application in polysaccharide concentration purification in Chinese herbal medicine, belong to porous membrane technical field.It includes: while the non-solvent phase separation of film-forming polymer solution and the formation of separation layer on the outer surface of polymer membrane, simultaneously coating water-soluble coating layer polymer solution on the surface of separation layer, obtain charged hydrophilic polymer porous membrane;Film-forming polymer solution uses fluorine-containing polymer as film-forming base material, uses nitrogen-containing small molecule as first solvent, uses macromolecular organic matter as pore-forming agent.The application is applied to polysaccharide concentration purification in Chinese herbal medicine, solve the problem that the membrane surface opening rate is low, hydrophilic and poor negative charge of existing non-solvent phase separation technology is not applicable to polysaccharide concentration purification in Chinese herbal medicine, the opening rate of charged hydrophilic polymer porous membrane prepared is high, cutting molecular weight is 10-1000kDa, and can realize membrane forming, improve surface opening rate and surface hydrophilic negative charge modification simultaneously.

The application discloses a responsive fluorescent / phosphorescent dual-mode carbon quantum dot composite material, and is characterized in that biomass such as yacon peel is used as a carbon source, ethylenediamine is used as a nitrogen source, nitrogen-doped carbon quantum dots are prepared through a one-step hydrothermal method, the nitrogen-doped carbon quantum dots and hydrophilic polymers are uniformly dispersed in deionized water to obtain the responsive fluorescent carbon quantum dot composite material, and the ink prepared by using the composite material has the following characteristics: the printed pattern is invisible under natural light, can display cyan fluorescence under ultraviolet light, presents green phosphorescence after the ultraviolet light is removed, and can realize fluorescent / phosphorescent dual-mode anti-counterfeiting functions. 3+ In addition, the printed pattern can undergo fluorescence quenching under alkaline solution or Fe 3+ solution, realizes dynamic response anti-counterfeiting functions, and solves the problems that the existing carbon quantum dots have single light-emitting mode and are difficult to have dynamic response and dual-mode light-emitting functions.

The invention discloses a total heat exchange membrane and a preparation method thereof, the total heat exchange membrane comprises: a compact layer, the compact layer comprises a hydrophilic polymer substrate and an MXene functional filler, the hydrophilic polymer substrate comprises one or more of polyvinyl alcohol, polyvinylpyrrolidone, polyurethane and polyacrylic resin; the MXene functional filler is an MXene material subjected to antibacterial modification treatment; the porous support layer is coated with the compact layer, and the porous support layer is prepared from a polymer membrane material subjected to hydrophobic modification treatment. The total heat exchange membrane comprises a compact layer and a porous supporting layer, and the compact layer comprises a hydrophilic polymer base material and antibacterial modified MXene functional filler, so that high moisture permeability and antibacterial property of the total heat exchange membrane can be realized; the porous supporting layer is prepared from a polymer film subjected to hydrophobic modification treatment, has hydrophobicity, reduces adhesion of water molecules, and can reduce mass transfer resistance.

The invention discloses a toughened magnesium oxysulfate board, which is prepared from the following raw materials in parts by mass: 100 parts of magnesium oxide, 110 to 140 parts of magnesium sulfate aqueous solution, 1 to 4 parts of polypropylene fiber, 2 to 5 parts of dispersing agent, 2 to 5 parts of hydrophilic modifier, 5 to 10 parts of filler, 25 to 45 parts of heat insulation additive, 4 to 8 parts of curing modifier and 2 to 8 parts of foaming agent, the heat insulation additive comprises phenolic foam powder, hollow glass beads and floating beads; the dispersing agent comprises first polyvinyl chloride particles with the particle size of 1-1.5 mm and second polyvinyl chloride particles with the particle size of 1-2 microns, and the mass ratio of the first polyvinyl chloride particles to the second polyvinyl chloride particles is (2-3): 1; the hydrophilic modifier is a hydrophilic polymer containing hydroxyl and amino. The invention also discloses a preparation method of the toughened magnesium oxysulfate board. The light toughened magnesium oxysulfate board with good heat insulation performance, flame retardance, structural stability and fracture resistance is prepared through a heat insulation additive composed of phenolic foam powder, hollow glass beads and modified floating beads.

The application relates to the field of high-molecular polymer materials, and particularly discloses a preparation method of a high-penetration alloy hollow fiber ultrafiltration membrane with a twist structure, which comprises the following steps: (1) preparation of a twist structure-containing polyarylether sulfone; (2) preparation of a casting solution; and (3) preparation of the alloy hollow fiber ultrafiltration membrane.The high-penetration alloy hollow fiber ultrafiltration membrane prepared by the method adopts twist structure-containing rigid S-PAES, hydrophobic fluorine-containing S-PAES is blended with hydrophilic PVP, after the casting solution is solidified into a hollow fiber membrane form, specific hydrophilic holding post-processing is adopted, chemical reactions between groups are used to form stable covalent structures between the hydrophilic polymers, and the hydrophilic durability of the alloy ultrafiltration membrane is maintained.