292results about How to "Improve hydrophilicity" patented technology

The invention provides a double-dosage-form copper acid etching solution as well as a preparation method and application thereof. The double-dosage-form copper acid etching solution comprises an agent A and an agent B, the agent A comprises the following components in parts by weight: 15-20 parts of an oxidizing agent, 4-7 parts of an organic acid chelating agent, 0.1-0.5 part of inorganic acid, 0.5-2 parts of alkali, 1-2 parts of a surfactant and 0.01-0.1 part of a metal corrosion inhibitor; the agent B is prepared from the following components in parts by weight: 25 to 30 parts of organic acid chelating agent, 0.2 to 0.5 part of inorganic acid, 15 to 20 parts of alkali, 1 to 2 parts of surfactant and 0.1 to 0.3 part of metal corrosion inhibitor. The double-agent copper acid etching solution provided by the invention can be compatible with etching of Cu / Mo and Cu / MTD film layers, can be compatible with etching of film layers with different thicknesses, and is long in service life, low in CD Bias, free of chamfer cracks, good in residue, small in taper variation and short in etching time.

The invention discloses an application of engineered citrobacter freundii in fermentation synthesis of a stable body. The engineered citrobacter freundii is citrobacter freundii overexpressing a polyphosphate kinase gene Ppk1. The stable body prepared by fermenting the engineered citrobacter freundii is rich in polyphosphates and polyamines, particularly, the content of the polyamines can be up to 21wt%, the polyphosphates in the stable body can store the polyamines in an ionic bond combination mode, the combined polyamines are insoluble in water, a natural anion coating is generated, and the stability of the stable body is improved. And the sustained-release tablet is not easily taken by intestinal epithelial cells, so that the sustained-release tablet has a certain sustained-release effect. The medicine prepared by taking the compound as a main active ingredient shows a remarkable curative effect in ulcerative colitis treatment, has the comprehensive effects of reducing oxidative stress, enhancing the anti-inflammatory ability of a body and regulating immunity, is suitable for patients of all ages, and has outstanding application value and market prospect.

The present application relates to the technical field of polymer separation membrane, and discloses a method for preparing covalent framework composite membrane by gel vapor assistance, comprising the following steps: dissolving amino guanidine derivatives or water-soluble amine monomers and 1,3,5-triformylphloroglucinol derivative monomers in pure water respectively, mixing uniformly, and then dropping on the base film after alkalization pretreatment to form a hydrogel, and finally performing vapor assisted reaction. By means of gel vapor assisted film formation, the polymers form a uniform and dense film structure on the base film, and a continuous and uniform high-efficiency nanofiltration COF composite membrane can be quickly and simply prepared, and high-efficiency nanofiltration separation can be realized.

This invention provides a photocatalytic composite nanoenzyme self-cleaning coating, its preparation method, and its application. Specifically, it includes: preparing solution A with Ca(NO3)2·4H2O and nano-cerium oxide; preparing solution B with (NH4)2HPO4 and hexadecyltrimethylammonium bromide; mixing solutions A and B, and reacting at high temperature to obtain cerium oxide nanoenzyme / hydroxyapatite microspheres; and using (NH4)6Mo7O... 24 Solution M is prepared by dissolving Fe(NO3)3·9H2O in deionized water; solution N is prepared by dissolving Fe(NO3)3·9H2O in deionized water; solutions M and N are mixed to obtain a precursor; the precursor is reacted with cobalt oxide at high temperature to obtain Co / Fe2(MoO4)3; tetraethyl orthosilicate, anhydrous ethanol, deionized water, and ammonia are mixed and sealed for aging; after adding a modifier, it is mixed with cerium oxide nanoenzyme / hydroxyapatite microspheres and Co / Fe2(MoO4)3, sprayed onto the obtained composite coating, and cured at high temperature to obtain a self-cleaning coating. This invention, by loading a photocatalyst and nanoenzyme / hydroxyapatite microspheres onto the surface of a modified SiO2 gel, effectively improves the photocatalytic activity and self-cleaning performance of the coating while maintaining good optical transmittance.

The application discloses a modified asphalt for water-based drilling fluid and a preparation method thereof. The modified asphalt for water-based drilling fluid comprises the following raw material components: pretreated reducing slag, acid anhydride modifier, initiator, stabilizer, modifier, modification aid and performance regulator. The modifier is low-grade sulfur. The pretreated reducing slag comprises the following raw material components in weight: inferior reducing slag: 100 parts; oil sand asphalt: 20-60 parts; and pretreatment agent: 0.1-2 parts. The high-softening-point asphalt with high softening point and good hydrophilicity is obtained by modifying the difficult-to-handle inferior reducing slag and oil sand asphalt, and is suitable for being used as main material for producing asphalt water-based drilling fluid.

This invention provides a self-polymerizing microporous polymer hollow fiber ultrafiltration membrane, its preparation method, and its application, belonging to the field of ultrafiltration membrane technology. This invention mixes a self-polymerizing microporous polymer (PIM), a plasticizer, and an organic solvent to obtain a spinning solution. The spinning solution is then used for wet spinning to obtain a hollow fiber ultrafiltration membrane in one step. In this invention, the self-polymerizing microporous polymer (PIM) is added during the spinning process. The PIM material cross-links internally through aromatic ether bonds (C-O-C) to form a network structure, while micropores are generated during the network weaving process, thus forming a continuous pore network structure, thereby improving the performance of the ultrafiltration membrane. The hollow fiber ultrafiltration membrane prepared by this invention using a self-polymerizing microporous polymer with a specific structure exhibits good hydrophilicity, with a permeability coefficient of over 100 μm. ‑2 h ‑1 The above features enable efficient filtration under low pressure, reducing energy consumption.

The application belongs to the field of membrane material preparation, and discloses a preparation method of a natural gas dehydration membrane, the natural gas dehydration membrane and application thereof. The preparation method comprises the following steps: S1, preparing a mixed solution, wherein the mixed solution comprises polyetherimide, water wheel phenol and a solvent; S2, coating the mixed solution obtained in step S1 into a film; S3, placing the film obtained in step S2 on a substrate or a cold table at-10 to-2 DEG C for 1 to 10 min; S4, placing the film obtained in step S3 at a temperature of 30 to 45 DEG C for 2 to 5 min; S5, placing the film obtained in step S4 into a coagulation solution containing 4-methyl catechol for solidification; and S6, placing the film obtained in step S5 into a pyrrole aqueous solution for immersion, thereby obtaining the natural gas dehydration membrane. The natural gas dehydration membrane prepared by the application has high water permeability and a H2O / CH4 separation coefficient, and can be used in the dehydration process before natural gas transportation.

The invention provides high-naringenin-content modified shaddock peel fiber gel and a preparation method thereof.The preparation method comprises the following steps that after shaddock peel white pulp is subjected to quick freezing and smashing, pretreatment is conducted through an electrochemistry-assisted gradient enzymolysis technology, then customized immobilized naringinase is adopted for treatment, and high-naringenin-content shaddock peel fibers are obtained; and finally, uniformly mixing the fiber with carnosic acid and soybean saponin, and adding magnesium chloride for cross-linking and curing to obtain the modified shaddock peel fiber gel. According to the preparation method, electrochemical assisted gradient enzymolysis is adopted, so that a compact network structure of fibers can be destroyed to increase active sites, the immobilized naringinase not only can efficiently convert naringin and accurately enrich naringenin, but also can effectively improve bitter taste, and magnesium ions regulate and control a multiple cross-linked network formed by the components, so that the gel structure tends to be more stable; meanwhile, naringenin is stably loaded so as to avoid migration and aggregation of the naringenin, and the bioavailability and active efficacy of the naringenin are remarkably improved.

This invention relates to the field of nitrile butadiene rubber (NBR) technology, and discloses a biodegradable NBR, its preparation method, and its application in gloves. The biodegradable NBR of this invention comprises 60-80 parts by weight of NBR, 3-6 parts by weight of filler, 1.2-1.8 parts by weight of vulcanizing agent, 20-40 parts by weight of polylactic acid (PLA), and 5-12 parts by weight of cyanopolyester. The cyanopolyester of this invention improves the compatibility between PLA and NBR, resulting in a thermoplastic PLA-NBR composite material with higher tensile strength and tear strength, exhibiting excellent mechanical properties. The cyanopolyester's main chain contains a large number of biodegradable ester groups, and the addition of biodegradable PLA further enhances the biodegradability of the NBR material, making it more environmentally friendly and suitable for practical applications in biodegradable gloves.

The invention relates to an ether bond type covalent organic polymer (TPTF-AO) containing an amidoxime group and a synthesis method thereof. The method comprises the following steps: by taking 2, 4, 6-tri (4-hydroxyphenyl)-1, 3, 5-triazine and tetrafluoroterephthalonitrile as raw materials, constructing a covalent organic polymer precursor (TPTF) connected by a stable ether bond through nucleophilic substitution reaction of hydroxyl and fluorine atoms; further, the cyano group in the TPTF is subjected to amidoximation reaction under a mild condition and is efficiently converted into an amidoxime group, and the target product TPTF-AO is obtained. The polymer has a rigid skeleton connected by ether bonds and a mesoporous-macroporous composite pore channel structure, and has excellent chemical stability, thermal stability, rapid mass transfer capability and high-density metal ion coordination sites. The bottleneck that a traditional imine bond material is insufficient in stability is broken through, the problem that functional modification and skeleton stability are difficult to be compatible is solved, and the obtained material has wide application prospects in the fields of uranyl ion adsorption, catalysis, energy storage and the like.

The carbon dioxide responsive liquid crystal film containing amidine compound is formed by a cholesteric liquid crystal polymer capable of reflecting visible light and an amidine compound, and the film is prepared from the amidine compound, cholesteric liquid crystal monomer, crosslinking agent, chiral dopant, photoinitiator and porogen, and the amidine group in the amidine compound reacts with carbon dioxide to increase the hydrophilicity of the polymer network, and when water penetrates into the film, the light reflected by the film is red-shifted and the color is changed accordingly. The carbon dioxide responsive liquid crystal film prepared by the application has stable color change effect, obvious response effect, is easier to distinguish, is still reversible after multiple cycles, and the performance of the film is maintained well after multiple cycles.

This invention discloses an organocobalt salt for improving the tensile strength of rubber and its preparation method, belonging to the field of rubber technology. The organocobalt salt for improving the tensile strength of rubber comprises, by mass parts, 140-210 parts of organosilicon vegetable fatty acid, 20-30 parts of solvent, 20-30 parts of cobalt hydroxide, and 10-16 parts of propionic acid. The organosilicon vegetable fatty acid is obtained by reacting rosin with organosilicon maleimide. The organosilicon maleimide is obtained by reacting maleic anhydride with a silicon-containing long-chain fatty amine. The silicon-containing long-chain fatty amine is obtained by reacting methyldiethoxysilane with an unsaturated long-chain fatty amine. The organocobalt salt obtained by this invention has a good effect on promoting the adhesion between metal and rubber while effectively improving the tensile strength of rubber.

The invention discloses a green liquid salt and a production process thereof, and relates to the technical field of liquid salts.The production process comprises the steps that a metal organic framework is taken and added into a Tris-HCl buffer solution, uniform mixing is conducted, dopamine hydrochloride is added, stirring, centrifuging, washing and drying are conducted, and the metal organic framework of a core-shell structure is obtained; the preparation method comprises the following steps: adding sulfonated polysulfone, a core-shell structure metal organic framework and polyvinylpyrrolidone into N-methyl pyrrolidone, stirring until the materials are completely dissolved, and carrying out ultrasonic treatment to obtain a membrane casting solution; taking the membrane casting solution, pouring on a glass plate, and performing blade coating, water bath, phase inversion and soaking to obtain a nanofiltration membrane; taking brine, adding modified charcoal, adsorbing, and performing ultrafiltration through an ultrafiltration membrane to obtain ultrafiltration filtrate; and carrying out nanofiltration on the ultrafiltration filtrate through a nanofiltration membrane to obtain liquid salt. Sulfonic acid groups introduced into the nanofiltration membrane are negatively charged, and the interception rate of the nanofiltration membrane on sulfate ions, calcium ions and magnesium ions is improved through electrostatic interaction and size screening.

This application provides a fuel precursor, a fuel, and a method for preparing the same. The method for preparing the fuel precursor includes: mixing furanol, an organic extractant, water, and an acidic molecular sieve catalyst to obtain a mixture; heating the mixture under an inert atmosphere to obtain the fuel precursor. As the reaction proceeds, furanol continuously diffuses into the aqueous phase and reacts, while the organic extractant can promptly extract the target product, the fuel precursor, into the organic phase, avoiding further polymerization and improving the yield of the fuel precursor; furthermore, the two-phase system facilitates the separation and purification of the fuel precursor.

The application belongs to the technical field of biological medical materials, and discloses a polydopamine modified modified nano-graphyne and a preparation method and application thereof. In the method, the polydopamine coating is combined with the nano-graphyne for the first time to construct a GDY@PDA composite system, and the core defects of the blocky graphyne, such as easy agglomeration, poor water solubility and insufficient biocompatibility, are solved. The graphyne-based material is applied to the near-infrared two-region photothermal regulation of neural cell calcium influx for the first time, the calcium ion channel is activated through the local thermal effect of the material, and precise, remote and reversible calcium influx regulation is realized; the limitation that the traditional biocompatibility modification is easy to fall off and difficult to functionalize is broken through, the polydopamine modification makes the material have both photothermal efficiency and biological safety, and the application of the graphyne in the treatment of neural diseases (such as neural cell injury repair) is expanded.

This invention belongs to the field of synthetic bio-based waterborne polyols, mainly applied to waterborne polyurethane mortar floor coatings. This invention provides a modified castor oil specifically for waterborne polyurethane mortar floor coatings. It achieves waterborne conversion and controllable functionality of castor oil through relatively simple process conditions. Emulsions made from the modified castor oil synthesized by this invention have better storage stability than emulsions made by direct external emulsification of castor oil. Furthermore, it requires less stringent process conditions than chemical grafting of functional groups to improve the hydrophilicity of castor oil, meaning that waterborne conversion and functionality control of castor oil can be achieved under milder conditions.

The invention discloses essential oil microcapsule powder with high oil loading capacity and a preparation method thereof, and belongs to the technical field of microcapsules, the preparation method comprises the following steps: preparing a gelatin aqueous solution, preparing an Arabic gum aqueous solution, preparing an Arabic gum-starch aqueous solution, preparing a chitosan-tannic acid aqueous solution, preparing an emulsion, and performing primary crosslinking. Performing secondary crosslinking; the essential oil microcapsule powder prepared by the invention not only has high oil loading capacity and low surface oil content, but also has excellent slow release performance, solubility, long-term controlled release performance and flowability, and is uniform in particle size distribution.

The application relates to the technical field of self-heating products, and provides a long-lasting constant-temperature self-heating body and a preparation method thereof, wherein the self-heating body comprises the following raw materials in proportion by weight: iron powder 40-60 parts, activated carbon 10-20 parts, modified polypropylene fiber 1-5 parts, water-absorbing material 1-3 parts, vermiculite 5-8 parts, binder 1-3 parts, salt 2-5 parts and deionized water 10-20 parts. The self-heating body provided by the application has the characteristics of constant-temperature and long-lasting heating.

This invention discloses a method for increasing the hydrophilicity of titanium / titanium alloy dental implants using an electrochemical approach, comprising the following steps: S1, pretreating the titanium / titanium alloy dental implant to obtain a pretreated titanium / titanium alloy dental implant; S2, sandblasting and drying the pretreated titanium / titanium alloy dental implant obtained in S1 to obtain a treated titanium / titanium alloy dental implant; S3, acid etching the treated titanium / titanium alloy dental implant obtained in S2 to obtain an acid-etched titanium / titanium alloy dental implant; S4, electrochemical activation treatment to obtain an activated titanium / titanium alloy dental implant; S5, continuously rinsing the activated titanium / titanium alloy dental implant obtained in S4 with purified water for 20 seconds and drying it in a vacuum drying oven. This invention uses cyclic voltammetry (CV) electrochemically to activate the titanium / titanium alloy implant, thereby enhancing its hydrophilicity.

The application discloses an integrated stretchable flexible wearable biosensor and a preparation method thereof, and belongs to the technical field of electrochemical sensing.The integrated stretchable flexible wearable biosensor is wrapped by a PAN / SiO2 sweat absorption layer.The method comprises the following steps: preparing a stretchable conductive composite fiber; preparing an integrated stretchable flexible sensing fiber; preparing a PAN / SiO2 sweat absorption layer; and preparing a sensor.The conductive composite fiber in the application can maintain stable performance under multiple bending and twisting, the sensor is integrated with a flexible integrated circuit chip and a flexible power supply device to obtain a fabric sensing system, the fabric sensing system can process acquired sensor data, and the detection data can be uploaded to a mobile terminal and a cloud end in real time through Bluetooth technology, real-time monitoring and management of a health condition of the biosensor are realized, six specific biomarkers can be efficiently detected by using only 1 muL of sweat, the amount of sweat required for activating the biosensor is 1 / 3 of that of the prior art, and the fabric sensing system can easily adapt to a tensile strain caused by exercise.

This application provides a high-voltage electrochemical composite hydrogel for wound skin repair and its preparation method. The high-voltage electrochemical composite hydrogel is prepared by using hydroxyethyl cellulose and acrylamide monomers as raw materials to form an interpenetrating network structure. Polyvinylidene fluoride (PVDF) and ZnO nanowires are used as piezoelectric materials, and are formed by interweaving PVDF and ZnO nanowires within the hydrogel. This high-voltage electrochemical composite hydrogel significantly improves the crystallization orientation and polarization efficiency of PVDF through mechanical stretching and polarization, resulting in an order-of-magnitude improvement in the piezoelectric properties of the composite hydrogel. Simultaneously, it retains the excellent flexibility and biocompatibility of the hydrogel, showing broad application prospects in flexible sensors, self-powered devices, and human-computer interfaces.

The invention discloses a high-water-content lignite moisture accurate regulation and control method and device, and relates to the technical field of lignite treatment device.The high-water-content lignite moisture accurate regulation and control device comprises a rack and further comprises a crushing mechanism connected to the rack, and the input end of the crushing mechanism communicates with a feeding port; the input end of the vacuum dehydration system is communicated with the output end of the crushing mechanism; the input end of the feeding mechanism is communicated with the output end of the vacuum dehydration system; and the input end of the upgrading mechanism communicates with the output end of the feeding mechanism. High-water-content lignite is crushed through the crushing mechanism, water and pulverized coal are separated and collected through the vacuum dehydration system, and ash which affects heat production and pollutes the environment in the pulverized coal is removed through the quality improving mechanism, so that the combustion quality of the lignite powder is improved, and emission of pollutants is reduced; and conveying of the pulverized coal and adding of the corresponding water content are continuously performed through the scraper conveying belt, so that the influence of water and ash in the lignite with the high water content is reduced, and the water in the lignite is accurately regulated and controlled.

The present application relates to a preparation method for an antibody-drug conjugate and an application, and in particular, to a compound, or a tautomer, mesomer, racemate, enantiomer, and diastereomer, or mixture thereof, or a pharmaceutically acceptable salt, prodrug or solvate thereof, a preparation method for the compound and related antibody-drug conjugates, and a use of the same in the preparation of drugs for the treating cancer.

The invention discloses a preparation method of a PDMS (Polydimethylsiloxane) film for chip microfluidics, and belongs to the technical field of micro-fluidic chip manufacturing. According to the method, in-situ graft polymerization of polyethylene glycol methacrylate in a polydimethylsiloxane network is initiated by ultraviolet, so that chemical bonding of a hydrophilic chain segment is realized; silane-modified aluminum oxide nanoparticles are adopted as an insulating heat-conducting filler, single-particle-level dispersion is realized under the vacuum ultrasonic synergistic effect, and a dual-channel heat-conducting network is constructed; and a 3D printing mold is utilized, so that the limitation of a traditional photoetching process is avoided. The water contact angle of the prepared PDMS film is reduced to 35-45 degrees, the heat conductivity coefficient is increased to 0.48-0.52 W / (m.K), the volume resistivity is kept to be 1014 omega.cm or above, the demolding success rate of an arc-shaped structure reaches 92% or above, the preparation period is shortened to 4-6 hours, and a new technical path is provided for large-scale manufacturing of micro-fluidic chips.

The application discloses a preparation method of a high-peeling-strength inner support polyvinylidene fluoride hollow fiber membrane, and comprises the following steps: (1) mixing polyvinylidene fluoride, a hydrophilic pore-forming agent and an organic solvent to obtain a casting solution; (2) coating the casting solution on a modified support tube through a spinning nozzle, then walking vertically downward in the air, and then entering a coagulation bath to be coagulated and formed into a formed piece; and (3) soaking the formed piece obtained in the step (2) in pure water, then placing the formed piece in a mixed liquid of water and glycerol, and then drying to obtain the high-peeling-strength inner support polyvinylidene fluoride hollow fiber membrane. The anti-hook type support tube prepared by using the anti-hook technology has an increased roughness of the surface of the support tube, the casting solution and the support tube can have more contact areas, the adhesion between the membrane layer and the support tube is greatly improved, and the peeling and peeling-off of the membrane layer caused by washing during the operation of a membrane module can be effectively reduced.

The application discloses a sludge resource utilization method and application thereof. The sludge resource utilization method comprises the following steps: performing electro-fermentation treatment on sludge to be fermented in an anode chamber of an electrolytic cell; and the anode electrode in the anode chamber comprises a carbon-based material modified by titanium oxide. The anode electrode of the electrolytic cell comprises the carbon-based material modified by titanium oxide, the hydrophilicity of the surface of activated carbon particles can be significantly improved by modifying the carbon material by titanium oxide, the biocompatibility and electrocatalytic activity of the material are improved, the growth of microorganisms is facilitated, the anaerobic fermentation speed of bacteria can be improved, the electro-fermentation process speed and treatment effect are optimized and improved, and the effective recovery of elements such as nitrogen, iron and phosphorus contained in the sludge is realized, so that the application prospect is good.

Disclosed is an in vitro diagnostic chip having multiple levels of hydrophilicity, which differentially controls the flow rates of a liquid sample and thus enables the liquid sample to be evenly distributed all the way to corner or edge regions of a reaction space. The in vitro diagnostic chip having multiple levels of hydrophilicity comprises: a well array comprising a plurality of wells; and a multi- hydrophilic coating layer coated on the well array and controlling the flow rates of a sample so as to be mutually different. The hydrophilic coating layer is formed on the well array so as to have high hydrophilicity in accordance with the center region of the well array, and to have low hydrophilicity in accordance with the peripheral region of the well array, and thus the formation of an air pocket in the reaction space may be blocked. Accordingly, the occurrence of an error caused by the air pocket in a PCR test result may be prevented.

This invention belongs to the field of water softening and sterilization technology, and discloses an ion-selective adsorption electrode, a micro-electric field adsorption system, and their application in water softening and sterilization / algae removal. An ion-selective adsorption electrode comprises polypolycarboxylate ion exchange fibers, activated carbon, a conductive agent, and a binder, wherein the mass percentage of the polypolycarboxylate ion exchange fibers is 5-20%. This invention uses CCEF-modified activated carbon as the cathode, and at the optimal doping level, it effectively removes Ca... 2+ and Mg 2+ The selectivity coefficients were 15.0 and 13.5, respectively, for Ca 2+ The electroadsorption capacity of the electrode is 311 μmol / g, which is much higher than that of the AC electrode. After 50 cycles of stability testing, the Ca... 2+ The electroadsorption capacity remained above 85%, demonstrating good regeneration ability. Activated carbon modified with nano-silver was used as the anode, and under electric field enhancement, the inhibition rates against bacteria and microalgae reached over 99% and 90%, respectively, exhibiting excellent antimicrobial contamination capabilities.

The application discloses a kind of protein sponges of fast hemostasis and preparation method and application thereof.The protein sponge is prepared by modified protein irradiation crosslinking, and the structural formula of the modified protein is as shown in formula I: R1 is substituted alkyl;Substituted substituent group of substituted alkyl is selected from one or more of carboxyl, carbonyl, amido, amino, ester group;R2 is group containing carbon-carbon double bond;Substitution degree of R2 is 10%~80%;Substitution degree of R1 is 5%~20%.The present application introduces carbon-carbon double bond group and hydrophilic group at the primary amine position of protein, imparts the crosslinking ability of protein and enhances the hydrophilic performance of protein, by limiting the substitution degree of R1 and R2, the rate of protein sponge gelation after water absorption is regulated, and the controllable adjustment of sponge skeleton swelling speed and sponge channel contraction is realized.Compared with existing sponge, the protein sponge of the present application has good flexibility, more excellent efficiency of enriching blood clotting components, and low risk of rebleeding.

The application provides a zwitterionic crosslinked ultrafiltration membrane with high antibacterial performance and a preparation method thereof, and belongs to the field of membrane separation technology.The zwitterionic crosslinked polymer ultrafiltration membrane with high antibacterial performance is prepared by using sodium p-aminobenzenesulfonate as an additive and a modifier, controlling the electrophilic substitution and crosslinking reaction between the sodium p-aminobenzenesulfonate and chloromethyl in a chloroalkyl functionalized polymer to control the crosslinking degree, and adopting a one-pot non-solvent induced phase inversion method.The application controls the thermodynamics of a casting solution through a chemical reaction, and then controls the polymer film forming kinetics, realizes the control of the morphology, microporous structure and performance of the polymer ultrafiltration membrane, endows the zwitterionic crosslinked ultrafiltration membrane with permanent hydrophilicity and antibacterial performance, and provides a new idea for preparing a polymer porous functional membrane.