916 results about "Sulfone" patented technology

The invention provides a non-aqueous electrolyte, a lithium ion battery, a battery module, a battery pack and a power utilization device, the non-aqueous electrolyte comprises a lithium salt, an organic solvent and an electrolyte additive, and the electrolyte additive comprises 1, 3-propane sultone, fluoroethylene carbonate, vinylene carbonate, lithium tetrafluoroborate and a compound I shown in the formula I. The non-aqueous electrolyte is applied to the lithium ion battery, and the cycle life of the lithium ion battery is prolonged.

The invention discloses a shielding protection adhesive tape for semiconductor integrated circuit packaging and a preparation method thereof, and relates to the technical field of semiconductor integrated circuit packaging. The shielding protective adhesive tape for packaging the semiconductor integrated circuit is prepared by taking polyimide as a base material and coating a coating, and the coating comprises the following raw materials in parts by weight: 3-5 parts of modified nano silicon dioxide, 30-40 parts of N, N-dimethylformamide, 1-3 parts of a curing agent and 1-3 parts of a curing agent. The invention discloses a high-temperature-resistant epoxy resin coating which is prepared from the following components in parts by weight: 25-30 parts of N, N-dimethylformamide, 25-30 parts of a modified acrylate copolymer, 17-26 parts of ethyl acetate, 12-15 parts of epoxy resin, 1-2 parts of a silane coupling agent KH-550, 0.5-1 part of an antioxidant 1010, 0.3-0.8 part of an ultraviolet absorbent UV-327, 1-2 parts of carboxyl-terminated nitrile rubber, 2-4 parts of decabromodiphenyl ether, 0.1-0.3 part of an organic siloxane defoaming agent, 0.2-0.5 part of an acrylate flatting agent and 10-11 parts of diaminodiphenyl sulfone. The adhesive tape contains the modified nano silicon dioxide, the modified acrylate copolymer and other components, so that the performance of the adhesive tape is guaranteed; pretreatment is meticulous, preparation steps are standard, and mass production is easy; a finished product can be effectively shielded, and the packaging yield and the product stability can be improved.

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 crown ether grafted polyarylether sulfone ion separation membrane as well as a preparation method and application thereof, and belongs to the technical field of ion separation membranes, collaborative optimization is realized through crown ether accurate grafting and ultrathin ordered membrane formation: a main chain of polyarylether sulfone is grafted with 4 '-aminobenzo-12-crown-4 to form an inherent channel adapted to Li, and the specific surface area of the main chain is increased; the ultrathin film is prepared by a water surface spreading method, and the ion transmission path is shortened. Finally, in a LiCl / MgCl system, Liion flux has high selectivity, high permeation-high selectivity cooperation is preliminarily realized, the chemical synthesis step can be amplified to a kilogram level, and after a DPAES-g-CE / dichloromethane solution is dropwise added to the water surface, the DPAES-g-CE / dichloromethane solution is rapidly spread to form a film without precise equipment; the raw materials are industrial-grade monomers and have no toxic residues, the membrane can be recycled and reused through dichloromethane, the equipment cost is reduced by about 90%, and industrialization is easy; the main chain of the polyaryl ether sulfone is high in rigidity and resistant to high temperature and chemical corrosion; crown ether grafting avoids molecular chain agglomeration, and the swelling rate is far lower than that of a traditional sulfonated membrane.

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 bio-based fiber reinforced composite material and a preparation method thereof, and belongs to the technical field of bio-based fiber composite materials. The bio-based fiber reinforced composite material is prepared from the following raw materials in parts by weight: 60 to 80 parts of nylon 6, 10 to 20 parts of bio-based aramid fiber, 5 to 10 parts of modified carbon fiber, 2 to 6 parts of hyperbranched polyester modified zinc oxide and 1 to 3 parts of antioxidant, the bio-based aramid fiber is prepared by reacting 2, 5-furandicarbonyl chloride with two diamine monomers, and the two diamine monomers respectively contain trifluoromethyl and sulfuryl; the modified carbon fiber is obtained by grafting polyamidoamine on the surface of carbon fiber; the hyperbranched polyester terminal group of the hyperbranched polyester modified zinc oxide contains an epoxy group. The modified carbon fiber, the bio-based aramid fiber and the hyperbranched polyester modified zinc oxide are added into the nylon matrix, so that the composite material is endowed with good ultraviolet resistance, comprehensive mechanical properties and durability.

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.

The invention provides a method for producing 4, 4 '-dichlorodiphenyl sulfone by continuous reaction of a microchannel reactor, which comprises the following steps: uniformly mixing thionyl chloride and aluminum chloride to obtain a solution A; uniformly mixing hydrogen peroxide and glacial acetic acid to obtain a solution B; a first feeding pump and a second feeding pump are adopted for conveying chlorobenzene and a solution A into a first silicon carbide micro-channel reactor for reaction, an outlet of the reactor is connected with a gas-liquid separator, through separation, a gas phase is used for preparing a byproduct hydrochloric acid, and a liquid phase is a chlorobenzene solution of 4, 4 '-dichlorodiphenyl sulfoxide; and continuously conveying the chlorobenzene solution of 4, 4 '-dichlorodiphenyl sulfoxide to the second silicon carbide microchannel reactor by adopting a third feeding pump, and meanwhile, conveying the solution B to the second silicon carbide microchannel reactor by adopting a fourth feeding pump for reaction to prepare 4, 4'-dichlorodiphenyl sulfone. Compared with the prior art, the micro-channel reactor is used for continuous production, the mass and heat transfer effect is good, impurity generation is effectively inhibited, and the reaction time is shortened.

The present invention relates to a sulfone compound-based electrolyte and a secondary battery including the sulfone compound-based electrolyte. The secondary battery according to the present invention can suppress gas generation in high temperature or thermal runaway environments or generate non-flammable gas to reduce the risk of ignition or explosion.

The invention relates to the field of foam adhesive tapes, and particularly discloses a high-temperature-resistant acrylic foam adhesive tape and a production process thereof.The acrylic foam adhesive tape comprises an adhesive layer and a release paper layer, the adhesive layer is prepared by taking modified acrylate polymer as a base material and taking a foaming agent, a curing agent and a dispersing agent as auxiliary materials to be mixed in a solvent, and the release paper layer is prepared by taking the modified acrylate polymer as the base material and taking the foaming agent, the curing agent and the dispersing agent as the auxiliary materials; wherein the acrylate polymer is formed by crosslinking and curing a high-temperature-resistant monomer, a modified monomer, a hard monomer and a soft monomer under the action of an initiator, a phenyl sulfone structure and an imide ring in the high-temperature-resistant monomer can enhance the thermal stability of a main chain, meanwhile, thermal motion of a molecular chain is effectively inhibited, and the foam tape is endowed with excellent high-temperature resistance; a hydroxyapatite structure, a phosphate group and a silane bridging structure in the modified monomer can improve interfacial compatibility and enhance intermolecular cohesion at the same time, so that the foam tape is endowed with relatively high bonding strength and excellent tensile property.

The application belongs to the technical field of membrane preparation, and discloses a heavy metal enrichment block polymer nanofiltration membrane and a preparation method, which comprises the following steps: constructing an ultrafiltration base film: by controlling the proportion of sulfonated polyether sulfone (SPES-F) oligomers and polyether sulfone (PES-OH) oligomers, a block structure polymer with different hydrophilic / hydrophobic segment ratios is synthesized, and finally the block structure polymer is constructed into a base film with uniform pore size, high flux and strong stability; interface polymerization modification: on the surface of the hydrophilic base film, a dense and ordered grid-shaped separation layer is generated by interface polymerization (IP). By adjusting the microstructure of the skin layer, an ultrathin skin layer is constructed, and the structural stability of the base film and the skin layer is cooperatively adjusted, so that the thin skin layer realizes short-range low-resistance and effective screening function.

The invention discloses a preparation method and application of a graphene oxide permeable membrane suitable for a concentrated salt brine system, and relates to the technical field of organic matter removal and desalinization. According to the method, polyether sulfone serves as a basement membrane, carboxylated graphene oxide and sodium alginate are subjected to cross-linking construction, and a graphene oxide / sodium alginate composite membrane is prepared; and then the graphene oxide permeable membrane is immersed in an alkali metal Sr < 2 + > solution and transition metal Fe < 2 + > and Fe < 3 + > solutions in sequence, and the graphene oxide permeable membrane is prepared. The prepared permeable membrane material can realize efficient interception of various soluble organic matters in a salt lake brine system, shows excellent desalting performance, and has a good application prospect in the field of salt lake brine treatment.

The invention discloses an asymmetric sulfone polymer nanoscale filter membrane as well as a preparation method and application thereof, and belongs to the technical field of membrane materials. The filter membrane comprises a filter membrane main body, the filter membrane main body comprises a pre-filtering layer and a separation layer for intercepting impurities, the average thickness of the separation layer is 0.5-12 microns, and the porosity is 40-80%; the ratio of the maximum aperture of the PMI to the minimum aperture of the PMI of the filter membrane is 1.2-3.5, the retention rate of the filter membrane to 2nm colloidal gold is greater than or equal to 90%, and the ratio of the standard deviation of the area value of the brightness displacement spectrum to the average value of the area value is 0.01-2 when the filter membrane with the retention rate of 2nm colloidal gold is subjected to section brightness measurement; the separation layer structure which is thin and uniform in thickness and the proper pore size and pore size distribution of the filter membrane are combined with high porosity, so that the filter membrane can be ensured to have high flux and high cleanliness while having high interception efficiency, and the filter membrane is suitable for nanoscale purification of a liquid treatment agent used in a semiconductor wet process.

The invention belongs to the technical field of photo-thermal water evaporation films, and discloses a Janus-structure photo-thermal evaporation film for seawater desalination and a preparation method of the Janus-structure photo-thermal evaporation film. The Janus film is obtained by treating a composite film solution through a non-solvent induced phase separation method and a nano laser etching technology. The preparation method comprises the following steps: dissolving phthalazinone polyarylethersulfone ketone in N-methyl pyrrolidone, cooperating with nano molybdenum disulfide to prepare an upper layer of the photo-thermal super-hydrophobic water evaporation double-layer film, and dissolving quaternized phthalazinone polyarylethersulfone ketone in N-methyl pyrrolidone to prepare a hydrophilic lower layer of the water evaporation double-layer film. According to the prepared water evaporation thin film material, the super-hydrophobic upper surface and the hydrophilic lower layer are achieved through surface laser etching, meanwhile, the water evaporation thin film material has excellent photo-thermal performance in a full-spectrum area of sunlight, and the water evaporation rate is excellent under irradiation of 0.8 sunlight intensity and a 60-degree wide angle.

The invention relates to the technical field of polyamide nanofiltration membranes, in particular to an acid and alkali resistant high-strength nanofiltration membrane and a preparation method thereof. The problem that the strength and the acid and alkali resistance of a polyamide nanofiltration membrane in the prior art cannot be considered at the same time is solved. The base membrane material of the polyamide nanofiltration membrane is modified polyethersulfone and is obtained by chemically bonding a carbon nanotube subjected to double surface modification by titanium dioxide sol-gel and a KH550 coupling agent in a polyester non-woven fabric, and the modulus of the material is improved by utilizing an inorganic-organic hybrid network; the functional layer of the polyamide nanofiltration membrane is made of modified polyamide, and the modified polyamide functional layer is formed by forming a polyamide matrix through polymerization reaction of 2, 2 '-disulfonic acid-4, 4'-diaminobiphenyl, piperazine and trimesoyl chloride and introducing 4-amino-2, 2, 6, 7-tetramethyl-1, 3-pentanediol at the same time. And the chemical resistance is improved by a free radical capturing group generated by 2, 2, 6, 6-tetramethylpiperidine and octa-isobutyl cage type silsesquioxane.

The invention discloses a preparation process of polyether-ether-ketone, and relates to the technical field of preparation of inorganic compounds. The preparation process comprises the following steps: reacting 4, 4 '-difluorobenzophenone, sodium carbonate and hydroquinone to generate polyether-ether-ketone, taking a polyaryletherketone block oligomer as an end-capping reagent, reacting 4, 4'-difluorobenzophenone with 4, 4 '-dimercaptodiphenyl sulfone, and then reacting with pentaerythritol phosphate to obtain the polyaryletherketone block oligomer. The thioester bond reversibly breaks at the polymerization temperature, exposed active sulfenyl reacts with hydroxyl at the tail end of the polyether-ether-ketone to form a more stable covalent bond, volatilization of the end-capping reagent is avoided, meanwhile, the initial decomposition temperature of the end-capped polyether-ether-ketone is increased, and the stability of the end-capping reagent is improved. The polyether-ether-ketone generated in the polyether-ether-ketone resin product is subjected to treatment procedures of crushing, organic solvent extraction, water washing, filtering, drying and the like, so that the product polyether-ether-ketone is obtained, less three wastes are generated, the solvent can be recycled, the atom economy is relatively high, and the preparation process of comprehensive utilization of resources is realized.

The invention relates to the technical field of batteries, in particular to molecular cage electrolyte for a sodium ion battery, a preparation method of the molecular cage electrolyte and the battery. The preparation method comprises the following steps: mixing a metal organic polyhedron with a safe solvent, and completing cage-entering coordination to obtain a prefabricated solution; mixing the pre-prepared solution with an electrolyte salt solution to prepare an electrolyte; wherein the metal organic polyhedron comprises at least one of a copper-based cage, a uranium-based cage, a zirconium-based cage, a chromium-based cage, a zinc-based cage, a magnesium-based cage, a rhodium-based cage and a lanthanum-based cage; the safe solvent comprises at least one of a phosphate ester solvent, a phosphite ester solvent, a sulfone solvent, a fluorosulfone solvent, a fluorophosphate ester solvent and a phosphazene solvent; the electrolyte salt solution comprises an electrolyte salt, an organic solvent and a functional additive. According to the electrolyte prepared by the preparation method, the thermal safety performance of the battery can be improved, and the electrochemical performance of the battery can also be improved.

The invention provides a dyeable high-temperature-resistant modified meta-position aramid fiber and a preparation method thereof. The modified meta-aramid fiber is mainly prepared from a spinning solution prepared from m-phenylenediamine, methyl 3, 5-diaminobenzoate, 3, 3 '-diaminodiphenyl sulfone and an isophthaloyl dichloride copolymer through dry spinning, and the dye uptake of a disperse dye is not lower than 85%; the thermal decomposition temperature is not less than 400 DEG C. The preparation method comprises the following steps. S1, fully continuous polymerization; s2, continuously neutralizing and conveying; s3, direct spinning; and S4, fiber forming and post-treatment. The method has the advantages that (1) the quality difference between batches in the traditional intermittent method is eliminated, and the uniformity and stability of the product performance are realized; and the preparation process is compact, the production efficiency is high and the energy consumption is low. And (2) the dyeing performance of the prepared fiber is obviously improved, the inherent high-temperature-resistant characteristic of the aramid fiber is maintained, and the mechanical property is excellent. And (3) the application range of the meta-position aramid fiber is expanded.

The invention discloses a preparation method of an anti-pollution modified polyethersulfone nanofiltration membrane, which comprises the following steps: step A1, preparation of a membrane casting solution and a coagulating bath: dissolving polyethersulfone, a zwitterionic block copolymer, tetrazine modified graphene quantum dots and tetrabutyl titanate in N-methyl pyrrolidone to obtain the membrane casting solution; the zwitterionic block copolymer forms a dynamic hydration layer through strong hydration to inhibit pollutant adsorption; dissolving calcium chloride and disodium hydrogen phosphate in deionized water, adding triethanolamine to adjust the pH value of the solution to 8.0-9.0, continuously stirring, and adding norbornene modified chitosan in the stirring process to obtain a coagulating bath; the invention relates to the technical field of nanofiltration membranes. According to the preparation method of the anti-pollution modified polyethersulfone nanofiltration membrane, vertical array hydroxyapatite whiskers generated by biomimetic mineralization provide a super-hydrophilic surface to reduce organic matter adhesion; the tetrazine-norbornene light-triggered dynamic cross-linked network endows the film surface with self-repairing capability, and the use damage can be repaired.

The invention belongs to the technical field of carbon fiber surface treatment, and particularly relates to a cross-linked polymer modified carbon fiber, a preparation method and a composite material. Aiming at the problem of insufficient interface bonding force between the existing polyarylsulfone / ketone thermoplastic sizing agent and the carbon fiber, the core of the invention is to apply a polyarylsulfone / ketone derivative of which a main chain or a side chain is provided with an electrochemically crosslinkable active group to the technical field of carbon fiber surface treatment. And constructing a covalent bond combined three-dimensional network structure coating on the surface of the carbon fiber in situ. According to the method, firm anchoring of the coating and the carbon fibers is achieved, and the interface load transmission efficiency and the interlayer shear strength of the carbon fiber / polyether-ether-ketone composite material can be remarkably improved. The method is mild in process condition, easy in parameter control and convenient in post-treatment, meets green manufacturing requirements, and has remarkable large-scale production advantages.

The invention discloses a sodium-ion battery electrolyte and a preparation method thereof, and relates to the technical field of sodium-ion batteries, the electrolyte comprises a sodium salt, a composite solvent, an additive and an auxiliary agent, the sodium salt is formed by compounding sodium bis (fluorosulfonyl) imide, sodium bis (trifluoromethanesulfonyl) imide and modified sodium bis (oxalato) borate, and the composite solvent is formed by compounding sulfolane, 1, 3-butanediol, 1, 3-butanediol, 1, 3-butanediol, 1, 3-butanediol, 1, 3-butanediol, 1, 3-butanediol, 1, 3-butanediol, 1, 3-butanediol and 1, 3-butanediol. The auxiliary agent is nano-scale ZIF-8, the additive is 1, 3-propylene glycol dimethyl ether, dimethyl carbonate, fluoroethylene carbonate and ethyl acetate, the additive is modified 1, 3-propane sultone, trimethyl phosphate and hydroquinone dimethyl ether, and the auxiliary agent is nano-scale ZIF-8. According to the electrolyte, sodium bis (oxalato) borate is modified after being treated by hydrogen peroxide and has efficient hydrofluoric acid resistance, meanwhile, hydrofluoric acid generated by the reaction of fluorine-containing sodium salt and water in the electrolyte can be specifically removed by utilizing an auxiliary agent of the nano ZIF-8 and a synergistic effect formed by the sodium salt and the auxiliary agent, and damage of the hydrofluoric acid to a negative electrode SEI film is avoided; and the cycle life of the sodium ion battery is prolonged.

The invention discloses an organic micromolecule modified polyethersulfone composite dielectric film and a preparation method and application thereof, and belongs to the technical field of functional polymer composite materials and preparation thereof. The problems that an existing PESU-based dielectric film is insufficient in energy storage density and low in charging and discharging efficiency are solved. According to the PESU-based dielectric film, PMDA is doped in a PESU substrate through a blending process, the stacking and polarization characteristics of polymer chain segments are improved on the molecular level by means of the doping of PMDA, and the charge-discharge efficiency, the energy storage density and the breakdown field strength of the PESU-based dielectric film are remarkably improved while the excellent mechanical property of the PESU substrate is kept. Test results show that the obtained composite film achieves energy density of 8.6 J / cm < 3 > and energy storage efficiency of 67.0% under the field intensity of 560 kV / mm.

The invention provides a hot-melt epoxy resin composition, a prepreg, a fiber reinforced composite material and a preparation method, the hot-melt epoxy resin composition comprises 60-70 parts of liquid epoxy resin, 30-40 parts of solid epoxy resin, 10-20 parts of a flame retardant, 5-15 parts of a flexibilizer, 5-15 parts of a curing agent, and 0.5-1.5 parts of an impregnating compound; the prepreg comprises the following components in parts by weight: 30-45 parts of a hot-melt epoxy resin composition and 55-70 parts of a reinforcing material, the fiber-reinforced composite material is obtained by laminating prepregs in a predetermined form and pressing / heating to cure the resin. The carboxyl-terminated nitrile rubber and the polyethersulfone are mixed for toughening, so that the viscosity of a resin matrix in the curing process is effectively ensured while toughening is performed, serious gummosis of the resin matrix is prevented, and the anti-stripping strength of the composite material is improved; the flame retardant and smoke suppression performance of the composite material can meet the requirements of 60s vertical combustion, 30s 45-degree combustion and smoke density test of an aviation system, so that the system realizes halogen-free flame retardance, and the application range of the material is wider.

The invention discloses an interface in-situ assembled gel and nanoparticle composite polyether sulfone membrane as well as preparation and application thereof, and belongs to the technical field of nano material and membrane separation. According to the invention, a gel and nanoparticle composite structure is constructed in situ on the surface of the membrane and in pores through a phase separation strategy for the first time, a gel layer of a main body is formed by crosslinking polyphenol and zirconium oxychloride, and nanoparticles are formed by complexing unoccupied sites of polyethyleneimine and polyphenol; a nucleation site is provided for in-situ construction of the gel layer on the surface. Compared with a surface modification post-treatment method, the method disclosed by the invention has the advantages of process integration, coating stability and the like; compared with a mixed matrix membrane constructed by zeolite and carbon nanotubes, agglomeration and polymer embedding are avoided, and a coating constructed by mixing hydrophilic gel and nanospheres can be formed on the surface of the polymer.

The invention relates to the field of ultrafiltration membranes, in particular to a seawater-corrosion-resistant ultrafiltration membrane for water treatment and a preparation method of the seawater-corrosion-resistant ultrafiltration membrane, which are used for solving the problems that the conventional ultrafiltration membrane is easily corroded and polluted in a seawater water treatment environment, so that the performance of the ultrafiltration membrane is remarkably reduced, and the water treatment cost and the operation difficulty are increased. The ultra-filtration membrane takes a carboxyl fluorine-containing polyarylether sulfone material as a main raw material, so that the ultra-filtration membrane has good chemical stability and corrosion resistance in a seawater environment, a quaternized zinc-based metal organic framework material is added into the ultra-filtration membrane, and a porous structure of the quaternized zinc-based metal organic framework material is utilized to enable the ultra-filtration membrane to have higher permeability, so that the removal performance of the ultra-filtration membrane is improved; meanwhile, the ultra-filtration membrane can be endowed with excellent antibacterial performance, formation of a biological membrane is effectively inhibited, biological pollution is avoided, the self-cleaning and anti-pollution capacity of the ultra-filtration membrane can be improved by adding the modified nano molybdenum disulfide powder, the removal performance of the ultra-filtration membrane is guaranteed for a long time, and the water treatment effect is improved.

The invention relates to the field of polymer functional membrane materials, and particularly provides a composite sulfonated polyarylene ether nitrile sulfone proton exchange membrane and a preparation method thereof. Sulfonated poly (arylene ether nitrile sulfone) is synthesized through nucleophilic substitution reaction, and the sulfonated poly (arylene ether nitrile sulfone) and sulfonated cobalt phthalocyanine are subjected to blending and casting to form a membrane, so that the provided composite sulfonated poly (arylene ether nitrile sulfone) proton exchange resin contains a sulfonic acid structural unit, a sulfone structural unit, a polar cyano group and a phthalocyanine structural unit; the problem that an existing proton exchange membrane is low in sulfonation degree and proton conductivity can be solved, and the proton exchange membrane has the advantages of being high in structural stability, good in mechanical property, excellent in thermal stability and high in safety. The introduction of sulfonated cobalt phthalocyanine can effectively improve the internal structure of the sulfonated polyarylene ether nitrile sulfone proton exchange membrane, promote the conduction rate of water molecules in the membrane, and further improve the proton conductivity of the sulfonated polyarylene ether nitrile sulfone proton exchange membrane. In addition, the manufacturing process is green and simple, the compounding cost is low, and the application prospect is very wide.

The invention provides a polyether sulfone flat sheet membrane with high flux and small molecular weight interception as well as a preparation method and application thereof, and relates to the technical field of membrane materials. The preparation method of the polyethersulfone flat sheet membrane with high flux and small molecular weight interception comprises the following steps: mixing polyethersulfone, a pore-foaming agent, an additive and a good solvent to obtain a homogeneous membrane casting solution; mixing a linear hydrophilic polymer with water to obtain a high-viscosity coagulating bath; wherein the molecular weight of the linear hydrophilic polymer is more than 100kDa; coating a base material plate with the homogeneous casting membrane solution, and placing the base material plate in the high-viscosity coagulating bath to obtain a primary polyether sulfone flat sheet membrane; the primary polyether sulfone flat sheet membrane is rinsed and subjected to pore protection, and the polyether sulfone flat sheet membrane with high flux and small molecular weight interception is obtained. The high-viscosity coagulating bath is adopted, and the membrane casting liquid phase conversion time is delayed, so that a uniform and compact layer is constructed on the surface layer of the membrane casting liquid, the formation of all-medium sponge holes is promoted, and the separation precision of small-molecular-weight substances is improved.

A process is disclosed for removing sulfides from liquid fossil fuel comprising mixing the liquid fossil fuel with an oxidizer and catalyst to form a multiphase reaction medium and producing a fluid flow of the multiphase reaction medium. Ultra sound may be applied to the multiphase reaction medium to cause oxidation of sulfides in the liquid fossil fuel to sulfones; and extracting the sulfones to yield an organic phase and aqueous phase. The ultra sound is performed by generating vibrations parallel to the fluid flow of the multiphase reaction medium. The organic phase substantially consists of desulfurized fuel.

The invention discloses N-alkylated / sulfonated benzimidazole polyaryletherketone / polyaryletherketone sulfone with controllable grafting density as well as a preparation method and application of the N-alkylated / sulfonated benzimidazole polyaryletherketone / polyaryletherketone sulfone. The preparation method comprises the following steps: firstly, introducing a protecting group on a phenolic hydroxyl group of a bisphenol monomer containing a benzimidazole structure, then carrying out nucleophilic substitution reaction on alkyl halide / alkyl halide sulfonic acid and-NH, and then removing the protecting group to obtain an N-alkylated / sulfonated benzimidazole functionalized bisphenol monomer; copolymerizing the monomer, a bisphenol monomer and a difluoro monomer to obtain a polymer; alkyl or alkyl sulfonic acid is introduced to a benzimidazole ring, so that-NH bonds are passivated, a steric hindrance effect is formed, and gelation of the polymer under a high polymerization degree is avoided; by adjusting the molar ratio of the monomers, the retention stability of the functional groups can be effectively controlled, and compared with the traditional grafting on the polymer, the non-regulation of functionalization and the gelation of the polymer are effectively avoided.

The application provides a virus-removing polyether sulfone porous membrane and a preparation method thereof. The virus-removing polyether sulfone porous membrane comprises, in sequence along a thickness direction, an outer layer region and an inner layer region, wherein the average pore size of the outer layer region is 10-20 nm, the thickness of the outer layer region is 20-50 microns, the average pore size of the inner layer region is 5-10 microns, and the thickness of the inner layer region is 60-150 microns; and the virus-removing polyether sulfone porous membrane is prepared by a method comprising at least the following process: taking polyether sulfone as a raw material, and obtaining the virus-removing polyether sulfone porous membrane under the action of a water-soluble diluent and a hydrophilic additive; wherein the water-soluble diluent comprises ethylene carbonate and polyethylene glycol. The virus-removing polyether sulfone porous membrane has a high virus removal rate and a high protein permeation rate.