709 results about "Polyether sulphone" patented technology

The present disclosure relates to a layered bimetallic hydroxide-based hydrogel bipolar membrane and a method for preparing the same. The method includes: blade-coating a quaternized polyethersulfone solution on a substrate, and carrying out drying to obtain an anion exchange layer; immersing the layer sequentially and cyclically in a sodium alginate solution and a first metal ion mixed solution to obtain a hydrogel anion exchange membrane; immersing the hydrogel membrane sequentially in a second metal ion mixed solution and an alkaline solution; and blade-coating a sulfonated polyethersulfone solution on the obtained membrane, and carrying out drying to obtain the layered bimetallic hydroxide-based hydrogel bipolar membrane. The anion and cation exchange membrane layers on two sides of the bipolar membrane prepared in the present disclosure are closely bound by way of hydrogel cross-linking. The bipolar membrane has the advantages of high water dissociation efficiency, low energy consumption, and good stability.

The invention belongs to the field of environment-friendly materials, and particularly discloses a method for preparing a high-performance exterior wall flame-retardant material from waste plastics. Through a unique formula, for example, waste polyethersulfone and the like are used as base materials, a waste basalt fiber and MOF derived carbon nanosheet composite reinforced phase, multiple novel flame retardants and the like are added, and innovative processes including pulsed electric field treatment, carbon dioxide supercritical fluid assistance and the like are combined, so that the material performance is remarkably improved. The tensile strength, the thermal stability, the flame retardant property and the like of the material are greatly enhanced, the material also has multiple functions of flexibility, self-cleaning, antibiosis and the like, and a new way is provided for high-value utilization of waste plastics and performance optimization of exterior wall materials.

The invention relates to a synthesis method and application of a poly (ether) sulfuryl block copolymer based on chain exchange reaction, and belongs to the technical field of high polymer materials, the synthesis method comprises the following preparation steps: S1, taking an organic solvent, adding a poly (ether) sulfuryl material into the organic solvent, heating and stirring until the poly (ether) sulfuryl material is completely dissolved to obtain a mixed system; and S2, adding an amino-containing hydrophilic polymer material with reaction activity into the mixed system prepared in the step S1, and removing the solvent after reaction to obtain the poly (ether) sulfuryl block copolymer. The preparation process is easy to operate, the production period is short, the obtained material is stable in performance, and industrial production is easy.

The invention discloses a glue solution for a copper-clad plate and a preparation method of the glue solution, and relates to the technical field of copper-clad plates. According to the prepared glue solution for the copper-clad plate, the composite epoxy resin, the curing agent, the accelerant, the solvent, the flexibilizer and the inorganic filler, the composite epoxy resin comprises bisphenol A epoxy resin, epoxy phenyl polysiloxane, itaconic acid polyaryletherketone and hydroxyl-terminated fluorine-containing vinyl polysiloxane, so that the interface bonding force with the copper plate is enhanced; the dielectric constant and the dielectric loss are effectively reduced, the peel strength and the toughness of the material are also remarkably improved, and the toughening agent is modified polyether sulfone microspheres; the modified polyethersulfone microspheres are prepared by coating polyethersulfone microspheres with hexamethylenediamine tetrapropionamide diamine, the hexamethylenediamine tetrapropionamide diamine is prepared by carrying out acylation condensation reaction on hexamethylenediamine tetramethyl propionate and ethylenediamine, and the polyethersulfone microspheres are prepared by carrying out electrostatic spinning on a spinning solution of polyethersulfone and vinylpyridine, so that the peel strength of the glue solution is remarkably improved.

The invention relates to a process for gradient extraction of seaweed protein, algin and fucoidin in brown algae. The invention relates to a process for extracting seaweed protein, algin and fucoidin in brown algae, which comprises the following steps: carrying out superfine grinding on seaweed, adding water for extraction, filtering and separating to obtain water extraction filtrate, repeatedly dissolving the water extraction filtrate in the next batch of superfine ground seaweed, and circulating for 7 times to obtain saturated or supersaturated water extraction filtrate; adjusting the pH value of the water extraction filtrate to be acidic, and filtering and separating through a micro-filtration membrane to obtain seaweed protein and first filtrate; adding calcium chloride into the first filtrate, and settling to obtain algin and supernate; filtering the supernate through a polyethersulfone composite membrane to obtain a fucoidin concentrated solution; and carrying out spray drying on the concentrated solution to obtain fucoidin powder. The method solves the problem that other functional components are wasted due to the fact that only a single component can be extracted in an existing brown algae functional component extraction method, and also solves the problems of secondary pollution, poor product quality and high cost in an existing extraction method.

The invention relates to the field of hygienic products, and particularly discloses a probiotic hygienic product and a preparation method thereof. The probiotic hygienic product comprises a probiotic non-woven fabric, the probiotic non-woven fabric contains fibers rich in probiotics, and a preparation method of the fibers rich in the probiotics comprises the following steps: dissolving soybean protein isolate and calcium chloride to obtain a receiving solution; performing coaxial electrostatic spraying on the shell layer solution and the core layer solution to obtain probiotic embedded particles; carrying out electrostatic spinning on polyethersulfone to obtain a polyethersulfone nanofiber membrane; adding the probiotic embedded particles into a pectin solution to obtain a spraying solution, and spraying the spraying solution on the polyether sulfone nanofiber membrane to obtain blended powder; and mixing the blended powder with PE resin and an auxiliary agent according to a mass ratio, extruding, granulating to obtain a shell material, and carrying out composite spinning on the shell material and PET slices. The probiotic hygienic product disclosed by the invention has the advantages of high survival rate of probiotics, good storage stability, high activity retention rate, high water-holding capacity and good antibacterial activity.

The invention discloses a modified hollow fiber membrane which is composed of a separation layer, a supporting layer and a macroporous layer, the pore diameters of the separation layer, the supporting layer and the macroporous layer are sequentially increased, and a preparation method of the modified hollow fiber membrane comprises the following steps: weighing polyether sulfone / polysulfone, a pore-foaming agent, a solvent, an organic macromolecular additive and an inorganic salt additive according to the proportion to prepare a spinning solution; stirring and dissolving at 80-180 DEG C, centrifugally filtering, defoaming at 40-80 DEG C to obtain a spinning solution, carrying out coagulating bath on the spinning solution, molding, cleaning, stretching and drying to obtain the modified hollow fiber membrane. According to the preparation method, micromolecular inorganic salt pore-forming agents with different concentrations are added into a spinning solution and a coagulating bath, and interaction among inorganic salt, a polymer and a solvent is utilized, so that an inner skin layer structure and an outer skin layer structure of the hollow fiber membrane are adjusted, and a unique three-layer structure of a separation layer, a supporting layer and a macroporous layer is formed; the hydrophilic performance is stable, and the clearance on middle molecules is improved.

The invention discloses an anti-pollution modified hollow fiber membrane and a preparation method and application thereof.The anti-pollution modified hollow fiber membrane can be tightly combined with a zwitterionic polymer material modified nano-antibacterial material, and is prepared from, by weight, 8-30% of polyvinylidene fluoride (PVDF) / polysulfone / polyethersulfone, 0.1-15% of a modified material, 0.1-10% of an antioxidant and the balance water. According to the present invention, the prepared hollow fiber membrane has characteristics of excellent pollution resistance, no filament breaking, and application in wastewater treatment, pollution control, water resource comprehensive utilization, food processing, medicine purification, and other aspects, and the prepared hollow fiber membrane has characteristics of excellent pollution resistance, no filament breaking, and can be used in the fields of wastewater treatment, pollution control, water resource comprehensive utilization, food processing, medicine purification, and the like.

The invention discloses a high-temperature-resistant metal surface coating and a preparation method thereof, and the high-temperature-resistant metal surface coating comprises the following components in parts by weight: 40-60 parts of ceramic silicon resin, 20-30 parts of polyether sulfone modified organic fluorine resin, 8-10 parts of water-based polyimide resin, 10-15 parts of zinc chrome, 4-6 parts of boron nitride, 3-5 parts of a modified phenolic aldehyde amine curing agent, 8-15 parts of barium sulfate and 8-10 parts of short carbon fiber. The invention relates to the technical field of preparation of metal surface coatings. The metal surface coating is prepared from the following components in parts by weight: 5-8 parts of hollow glass beads, 2-4 parts of a silane coupling agent, 1-3 parts of an organic silicon defoaming agent, 8-12 parts of a dispersing agent, 1-2 parts of a thickening agent and 6-9 parts of a composite coating anti-aging agent. According to the high-temperature-resistant metal surface coating and the preparation method thereof, the ceramic silicon resin, the polyethersulfone modified organic fluororesin and the water-based polyimide resin are adopted as main resin components, a stable structure can be formed at high temperature, and the high-temperature-resistant metal surface coating can bear higher temperature.

The invention relates to a special engineering plastic polyethersulfone microcellular foam material and a preparation method thereof, belongs to the technical field of high polymer material foaming, and solves the problem that high foaming ratio, a microcellular structure and excellent mechanical properties cannot be simultaneously obtained when a macromolecular polyethersulfone material adopts an injection foaming technology in the prior art. The method comprises the following steps: step 1, pretreating raw materials; 2, melt blending: mixing the PES base material, the second component, the functional filler, the cross-linking agent and the foam stabilizer, carrying out melt blending, granulating, and drying to obtain granules; 3, injection foaming: injecting the granules into an injection machine, adding a composite foaming agent into the injection machine, mixing, and performing injection foaming molding to obtain an injection-molded foaming material; and 4, curing: irradiating the injection-molded foam material with rays to obtain the special engineering plastic PES microcellular foam material.

The invention discloses a microalgae membrane concentration system and method. The system comprises a microalgae culture solution storage tank, a pretreatment unit, a membrane concentration unit and a concentrated solution collection tank which are connected in sequence, the microalgae culture solution storage tank is provided with a stirring device, a liquid level sensor and a temperature sensor; the pretreatment unit comprises a filter assembly, and the filter assembly adopts multi-stage filtration and comprises a coarse filter screen and a fine filter screen; the membrane concentration unit is internally provided with a filter membrane, the filter membrane adopts a hollow fiber membrane component, the membrane is made of polyvinylidene fluoride or polyether sulfone, a cross-flow filtration mode is adopted, the membrane concentration unit is provided with a pressure regulating device, a circulating pump and a backwashing system, and the backwashing system adopts gas and liquid for alternate washing. The pressure adjusting device is used for adjusting the pressure difference between the two sides of the fiber membrane component; and the concentrated solution collecting tank is provided with a cooling device and a concentration monitoring device. According to the system and the method, the cleaning and concentration efficiency is higher, and the quality of microalgae obtained through concentration is higher.

The invention provides a preparation method of a high-flux stable-selection anti-fouling nanofiltration membrane, which comprises the following steps: carrying out amination modification on a nano material by an activation method to prepare a modified nano material; piperazine, an acid absorbent and the modified nano material are added into deionized water to be mixed, and a water phase solution is prepared; the preparation method comprises the following steps: mixing trimesoyl chloride and normal hexane to prepare an organic phase solution; immersing the polyethersulfone-based membrane into the water phase solution, draining, inversely immersing into the organic phase solution, and carrying out interfacial polymerization reaction to generate a polyamide layer to obtain a composite membrane; and then carrying out post-treatment on the composite membrane to obtain the composite membrane. The membrane has high permeability, high selectivity and strong anti-pollution performance.

The invention belongs to the field of solid-state batteries, and particularly relates to a solid-state battery and a composite electrolyte, preparation and application thereof, and the preparation method of the composite electrolyte comprises the following steps: dissolving a base membrane polymer with a solvent A to obtain a base membrane solution, and forming the base membrane solution into a wet membrane; pre-forming the wet film in an environment with the humidity of 50-80% RH in advance; soaking the wet film in a solvent B, and forming the wet film into a base film; and compounding the base membrane and a precursor solution for forming the electrolyte, and then carrying out in-situ polymerization to prepare the composite electrolyte, wherein the base membrane polymer comprises at least one of polyether sulfone, sulfonated polyether sulfone and polyetherimide; the solvent B is a mixed solvent of water and C1-C4 alcohol, and the volume ratio of the water to the C1-C4 alcohol is 1: (0.1-10); the precursor solution is a solution containing a monomer, a plasticizer and electrolytic salt. The method provided by the invention can be used for preparing the solid electrolyte with a special structure and excellent performance such as fast charge stability.

The invention discloses a preparation method of a nanofiltration membrane with high magnesium and lithium selectivity. The method mainly comprises the following steps: (1) preparing an aqueous phase solution containing macrocyclic amine; (2) soaking a polyether sulfone base membrane into the water-phase solution in the step (1) for a certain time, taking out the base membrane, and removing redundant water drops; (3) preparing a normal hexane solution containing acyl chloride; (4) soaking the base membrane in the step (2) into the n-hexane solution in the step (3), and reacting for a certain time; (5) soaking the membrane in the step (4) into a secondary reaction aqueous solution containing an amine monomer, and reacting for a certain time; and (6) putting the obtained composite membrane into a drying oven, and heating for a period of time to obtain the high-magnesium-lithium selective nanofiltration membrane. The nanofiltration membrane prepared by the method has relatively high magnesium-lithium selectivity.

The invention discloses a dual-modified polyethersulfone membrane and a preparation method thereof, and relates to the technical field of polyethersulfone membranes. According to the technical scheme, the preparation method comprises the following steps: carboxylating polyether sulfone to obtain carboxylated polyether sulfone; the preparation method comprises the following steps: carrying out cationization treatment on chitosan to prepare cationic chitosan; the prepared carboxylated polyether sulfone, cationic chitosan and an additive are prepared into the dual-modified polyether sulfone membrane through a phase inversion method. The problems of general membrane forming property, insufficient infiltration capacity, poor hydrophilicity, membrane body pollution and the like of the polyether sulfone membrane in the actual use process are solved, meanwhile, the biocompatibility of the polyether sulfone membrane is improved, and the service life of the membrane is also greatly prolonged.

The invention belongs to the technical field of membrane separation, and particularly relates to a method for preparing a high-flux hollow fiber nanofiltration membrane based on interfacial polymerization, the obtained membrane and application. The method comprises the following steps: firstly, carrying out pre-adsorption treatment on a polyethersulfone hollow fiber ultrafiltration base membrane through a polyethyleneimine aqueous solution to form a reactive anchoring layer; then sequentially dipping in an aqueous phase solution containing piperazine, sodium phytate and nanoscale cellulose whiskers and an organic phase solution containing trimesoyl chloride and 5-isocyanate isopeptide acyl chloride for interfacial polymerization; and finally, carrying out heat treatment on the obtained primary composite membrane, and completing a gas-phase cross-linking reaction in a glutaraldehyde steam atmosphere. According to the method, the hollow fiber nanofiltration membrane with high flux, high selectivity, excellent chlorine resistance and pollution resistance is successfully prepared through a multi-stage strengthening process, and the hollow fiber nanofiltration membrane is suitable for the fields of drinking water purification, industrial wastewater reuse, material separation and the like.

The invention discloses a preparation method of a high-temperature-resistant benzidine yellow pigment, and belongs to the technical field of pigment synthesis, and the high-temperature-resistant benzidine yellow pigment is prepared by diazotizing 3, 3 '-dichlorobenzidine, coupling the diazotized 3, 3'-dichlorobenzidine with a sulfonimide modified acetoacetanilide derivative to obtain a pigment compound, and finally compounding the obtained pigment compound with sulfanilamide group grafted polyethersulfone. According to the high-temperature-resistant benzidine yellow pigment prepared by the preparation method disclosed by the invention, the high-temperature-resistant performance of the benzidine yellow pigment is remarkably improved and the use performance of the benzidine yellow pigment is improved by introducing the sulfonimide group and the polyethersulfone grafted with the sulfanilamide group for synergistic modification.

The invention provides high-temperature-resistant geotechnical cloth and a preparation method thereof, and belongs to the field of building materials. The polyether-ether-ketone is aminated through phenylenediamine, and maleic anhydride is grafted, so that gradient polar group distribution is formed, and the interface bonding force and compatibility are improved; meanwhile, carboxyl and epoxy groups are introduced to modify polyether sulfone, a complementary network is formed, and the matrix toughness and the interface bonding force are enhanced; phosphate provides polar binding sites on the surface of aluminum nitride, and the ionic liquid forms a heat-conducting network, so that the heat conduction efficiency is improved; silane groups provide chemical binding sites on the surface of silicon carbide, and dopamine forms a secondary structure on the silicon carbide, so that the interface binding force is enhanced; polyether-ether-ketone with an amino-maleic anhydride structure is interwoven with a carboxyl-epoxy group of polyether sulfone to form an interpenetrating network, so that the toughness and thermal stability of a matrix are improved; the multi-layer interface structure of aluminum nitride and silicon carbide is beneficial to uniform stress transfer and interface firmness.

The invention relates to the technical field of anion exchange membranes, in particular to a dual-ion-channel synergistic enhanced conduction anion exchange membrane for alkaline water electrolysis hydrogen production and a preparation method of the dual-ion-channel synergistic enhanced conduction anion exchange membrane for alkaline water electrolysis hydrogen production, and the dual-ion-channel synergistic enhanced conduction anion exchange membrane for alkaline water electrolysis hydrogen production is prepared by blending and crosslinking quaternized polyether-ether-ketone and carboxylated polyether sulfone, the carboxylated polyethersulfone provides a cation channel to form a double-ion synergistic conduction structure; the preparation process of the anion exchange membrane comprises the steps of quaternized polyether-ether-ketone synthesis, carboxylated polyether sulfone synthesis, membrane casting solution preparation, tape casting drying, crosslinking treatment and alkali liquor ion exchange. By constructing a double-ion channel structure, the synergistic conduction of anions and cations is realized, and the total ion conduction efficiency of the membrane is remarkably improved. The two polymer components form a continuously interlaced channel network, so that the defect that the conduction path of the traditional single ion channel membrane is isolated is avoided.

A hollow fiber flow field separation system used in the method comprises a hollow fiber flow field separation channel, the hollow fiber flow field separation channel is divided into an inner layer and an outer layer and is provided with a three-way port, the outer layer is a silicon dioxide tube, and the inner layer is a silicon dioxide tube; the inner layer is a hollow fiber membrane made of a polyether sulfone material; the plunger pump is communicated with the hollow fiber flow field separation channel so as to pump the flow carrying liquid to flow in the hollow fiber flow field separation channel; the metering valve is communicated with the hollow fiber flow field separation channel so as to control the flow velocity ratio of the inlet and the outlet of the hollow fiber membrane in the focusing process; the valve is communicated with the hollow fiber flow field separation channel, and the switching of the sampling process, the focusing process and the elution process of the carrier liquid in the hollow fiber flow field separation channel is sequentially controlled by changing the flow direction of the channel. The method has the advantages of high anti-interference capability, high purification speed, high separation accuracy, simplicity in operation and the like, and is expected to be used for separating and quantifying polystyrene nanoparticles in complex matrix samples such as environment or biological tissues.

The invention discloses a hydrophilic polyethersulfone ultrafiltration membrane based on metalloporphyrin coordination modification as well as a preparation method and application of the hydrophilic polyethersulfone ultrafiltration membrane. According to the ultrafiltration membrane, a membrane casting solution is prepared by blending a polyether sulfone base material, an organic solvent, a pore-foaming agent and tetra (4-aminophenyl) porphyrin, and the membrane casting solution is cured and formed in a coagulating bath containing ferric ions through a phase inversion process. The preparation method is characterized in that porphyrin compounds and iron ions are subjected to an in-situ coordination reaction in the phase inversion process to form a stable metalloporphyrin complex network structure, and the prepared ultrafiltration membrane has the following advantages that the hydrophilicity is increased, and the pure water flux is increased; the protein rejection rate is not less than 95%; the antibacterial property and the anti-pollution property are excellent. The process is simple and controllable, and the obtained membrane material has important application value in the field of biological medicine separation.

The invention relates to a poly (ether) sulfuryl block copolymer integrated nanofiltration membrane and a preparation method and application thereof, and belongs to the technical field of high polymer materials, and the preparation method comprises the following steps: adding an additive with reaction active sites into a membrane casting solution, adding another substance capable of carrying out a cross-linking reaction with the additive in the membrane casting solution into a coagulating bath, and carrying out a cross-linking reaction with the additive in the membrane casting solution to obtain the poly (ether) sulfuryl block copolymer integrated nanofiltration membrane. Preparing a flat sheet membrane through a non-solvent induced phase separation technology; the compact hollow fiber nanofiltration membrane is integrally prepared on line by using a double-layer spinning nozzle through dry spraying and wet spinning by taking a membrane casting solution added with a monomer with reaction activity as an inner layer and taking a solution containing another substance capable of being subjected to cross-linking reaction with the monomer with reaction activity in the membrane casting solution as an outer layer. The method disclosed by the invention has the characteristics of simple process, simplicity and convenience in operation, short preparation period and environmental friendliness, and compared with a traditional membrane preparation process, the method is more favorable for preparing the high-flux and high-interception nanofiltration membrane.

The invention discloses a modified thermoplastic solid-solution anticorrosive coating, a preparation method thereof and application of the modified thermoplastic solid-solution anticorrosive coating on the surface of a pneumatic actuator, and belongs to the field of industrial equipment surface protection materials. Two novel modifiers are designed to construct a multi-protection system. Wherein the layered double hydroxide-silane covalent grafting modifier takes magnesium-aluminum layered double hydroxide as a matrix, and after covalent modification by a silane coupling agent, the matrix is compounded with a quinoline derivative in an intercalation manner, so that the interface bonding and barrier properties are improved; according to the polyaniline-graphene covalent grafting modifier, few layers of graphene and polyaniline are copolymerized and then grafted with a polyurethane prepolymer, so that the toughness and the conductive corrosion resistance of a coating are enhanced. The coating is prepared by taking polyethersulfone as a matrix, compounding the modifier, nano silicon dioxide and other components, mixing, dissolving, dispersing at a high speed and ultrasonically defoaming. The coating has the advantages of high interface adhesion, strong corrosion resistance, dynamic fatigue resistance, environmental protection, no solvent and the like, and is suitable for surface protection of key components such as a pneumatic actuator shell.

The invention discloses a self-repairing composite floor for a clean room and a preparation method of the self-repairing composite floor, and the preparation method comprises the following steps: carrying out amination treatment on nano silicon dioxide and carbon quantum dots by using a silane coupling agent, and sulfonating polyethersulfone ketone by using concentrated sulfuric acid; the preparation method comprises the following steps: carrying out curing treatment on epoxy resin, an amine curing agent, N-hydroxyethyl maleimide and tetrakis (3-mercaptopropionic acid) pentaerythritol ester to obtain epoxy-mercaptan resin; the preparation method comprises the following steps: carrying out prepolymerization reaction on vacuum dehydrated polyester polyol, tetrahydroxyethyl ethylenediamine, furanpropanol, diisocyanate, a catalyst, 2, 2 '-thiodiethanol and hydroxyl silicone oil to obtain a star-shaped polyurethane prepolymer, adding epoxy-thiol resin, glyceryl borate, sulfonated polyethersulfone ketone, aminated silicon dioxide, aminated carbon quantum dots and an auxiliary agent, carrying out ultrasonic treatment, and carrying out drying to obtain the star-shaped polyurethane resin. The self-repairing coating material is obtained; and coating the self-repairing coating material on the surface of a base plate, and performing hot-pressing curing molding to obtain the self-repairing composite floor for the clean room.

The invention belongs to the technical field of covalent organic framework membrane materials, and provides a covalent organic framework / polyether sulfone mixed matrix membrane as well as a preparation method and application thereof. The method comprises the following steps: mixing polyether sulfone, a solvent and trialdehyde phloroglucinol to obtain a trialdehyde phloroglucinol solution; the glass fiber filter membrane is coated with the trialdehyde phloroglucinol solution, and a trialdehyde phloroglucinol / polyether sulfone membrane is obtained; the method comprises the following steps: mixing p-phenylenediamine, a catalyst and water to obtain a p-phenylenediamine solution; the trialdehyde phloroglucinol / polyether sulfone membrane is soaked in a p-phenylenediamine solution for a reaction, and the covalent organic framework / polyether sulfone mixed matrix membrane is obtained. The preparation method disclosed by the invention is mild in condition, the obtained membrane is uniform and stable, the advantages of high flux of a polymer and strong adsorption and separation of a covalent organic framework on CO2 are fully combined, and the H2 flux and H2 / CO2 selectivity of the covalent organic framework / polyether sulfone mixed matrix membrane are greatly improved.

The invention discloses a preparation and application method of a modified ion exchange membrane for electrodialysis, aiming at the problems of poor selectivity, low mechanical strength, high energy consumption and the like of the existing ion exchange membrane, the high-performance modified membrane is prepared by a base membrane pretreatment-functional grafting-gradient curing synergistic process. The preparation method specifically comprises the following steps: performing ultrasonic cleaning and acid-base activation on a polyethersulfone or sulfonated polystyrene-based membrane, soaking the polyethersulfone or sulfonated polystyrene-based membrane in a modification solution containing an amino / carboxyl / sulfo functional monomer, a cross-linking agent and an initiator, and performing gradient heating curing to form a stable cross-linked network; the grafting rate of the modified membrane is 15-35%, the ion exchange capacity is 1.8-2.5 mmol / g, the water content is 25-40%, and the membrane surface resistance is less than 3 omega.cm < 2 >. When the membrane is applied to an electrodialysis device, the membrane runs under the conditions of 10-30V direct-current voltage, 5-15cm / s flow velocity and 25-45 DEG C, the high-salinity wastewater desalination rate is greater than or equal to 95%, and the monovalent ion selectivity coefficient reaches 5.8-7.2; when the catalyst is used for acid-base recovery, the H < + > migration number is 0.92-0.96, and the energy consumption is reduced by 18-25%.

The invention relates to amino-functionalized polyethersulfone as well as an efficient preparation method and application thereof. The invention belongs to the field of preparation of functionalized polyethersulfone. The invention aims to solve the technical problems of high cost, tedious steps and low synthesis efficiency of the existing method for preparing amino-functionalized polyether sulfone. The amino-functionalized polyethersulfone polymer is synthesized and prepared by selecting a specific active monomer, so that the steps of protecting and deprotecting amino groups on the monomer are not needed in the polymerization process, and a conjugated structure in the specific dichloro monomer can stabilize the amino groups and obviously improve the polymerization reaction efficiency. The preparation method has the advantages of simple process, easily available raw materials and low cost. The method is applied to the fields of petrochemical engineering, fine chemical engineering and medical treatment.

The invention discloses a nanofiltration membrane continuous preparation method and a preparation system.The preparation method comprises the steps that a moving carrier membrane is evenly coated with a polymer solution, a membrane layer with the set thickness is formed, the carrier membrane is a polyester membrane or a polyether sulfone membrane, and the membrane layer is a membrane layer with the set thickness; the polymer solution is polysulfone, polyimide, polyacrylate or a mixture thereof; carrying out suction filtration on the membrane layer, and removing the solvent to form a nanofiltration membrane with a predetermined pore structure; the nanofiltration membrane is dried and coiled, and movement of the carrier membrane is achieved through traction of a nanofiltration membrane coiling mechanism. According to the preparation method and the preparation system, continuous automatic production of the nanofiltration membrane can be realized, related parameters in the production process can be automatically adjusted according to data detected in real time, the production efficiency is improved, the production cost is reduced, and the product quality consistency can be ensured.

The preparation method comprises the following steps: (1) soaking male silkworm moths in white spirit, extracting, and filtering to obtain a male silkworm moth extracting solution; (2) performing percolation extraction on herba epimedii, semen cuscutae, fructus lycii, cordyceps sinensis, herba cistanche, rhodiola rosea, radix astragali, radix rehmanniae praeparata and stigma croci with white spirit to obtain percolate; (3) combining the male silkworm moth extracting solution and the percolating solution to obtain a medicine extracting solution; and (4) filtering the medicine extracting solution by using a 0.22-1 mu m polypropylene filter membrane, standing for 30-60 days, then filtering by using a 0.22-1 mu m polyethersulfone filter membrane, mixing with rock candy liquid, adjusting the alcohol content to (39 + / -2) degrees, and filtering by using a 0.22-1 mu m polyethersulfone filter membrane to obtain the traditional Chinese medicine wine. The medicinal liquor prepared by the preparation method disclosed by the invention is high in stability, and the problem that precipitates are generated by an original production process is effectively solved.

The invention discloses a high-wear-resistance and corrosion-resistance polyether-ether-ketone-based composite material as well as a preparation method and application thereof. According to the material, 60.0-70.0 parts of polyether-ether-ketone is used as a matrix, 18.0-30.0 parts of modified carbon fibers (with 50-200 nm micro-grooves etched in the surface and ZnO nanowires deposited through electrostatic spinning) acidified by nitric acid and coated by polyether sulfone are added, 2.5-12.5 parts of aminated nano zinc oxide / silicon nitride compound particles (with the mass ratio being (0.5-5): (2-7.5) and 2.1-6.0 parts of a graphene / PTFE lubricating system are cooperated, and multi-scale interface enhancement is achieved. A double-screw segmented temperature control (380-420 DEG C) and two-stage injection molding (380 DEG C / 80 MPa to 400 DEG C / 120 MPa) process is adopted, and gradient cooling (20 DEG C / min) is matched to form a Si3N4-rich wear-resistant layer, so that the mass loss rate of the composite material is less than or equal to 0.5% and the volume wear rate is less than or equal to 0.05 mm < 3 > / N.m after the composite material is soaked in an electrolyte with the pH value of 2-12 for 168 hours. The PEEK composite material is especially suitable for new energy automobile lithium battery slurry delivery pump rotors, motor sealing elements and other key parts, and breaks through the technical bottleneck of interface stripping and insufficient corrosion resistance of the traditional PEEK composite material.