64 results about "Sulfonated polymer" patented technology

The invention belongs to the field of hydrogen production by alkaline electrolyzed water, and particularly relates to a double-functional-group alkaline electrolyzed water composite diaphragm as well as a preparation method and application thereof. The preparation method of the double-functional-group alkaline electrolyzed water composite diaphragm comprises the following steps: S1, mixing nano ceramic particles with a modification liquid, and performing a modification reaction to obtain amino and sulfydryl double-functional-group modified nano ceramic particles, wherein the modification liquid contains an amino silane coupling agent and a sulfydryl silane coupling agent; the polymer supporting layer is placed in sulfonation liquid to be subjected to sulfonation modification reaction, and then a sulfonated polymer supporting layer is obtained; and S3, mixing the bifunctional group modified nano ceramic particles, a polymer, a pore forming agent and a first organic solvent to obtain a membrane casting solution, degassing the membrane casting solution, coating a sulfonated polymer supporting layer with the membrane casting solution to form a membrane, and performing phase inversion in a coagulating bath to obtain the bifunctional group alkaline electrolyzed water composite membrane. The double-functional-group alkaline electrolyzed water composite diaphragm provided by the invention is good in mechanical property, stable in performance, low in surface resistance and good in air tightness.

The present disclosure relates to a bilayer polyelectrolyte membrane comprising a first layer and a second layer wherein the first layer comprises a perfluorosulfonic acid and the second layer comprises a cross-linked polysulfonated polymer, and wherein the first layer is disposed on the second layer. The present disclosure also relates to a method of manufacturing the bilayer polyelectrolyte membrane, and a membrane electrode assembly and a fuel cell comprising the bilayer polyelectrolyte membrane.

The invention provides a sulfonic acid group post-modified conjugated microporous polymer cesium adsorbent and a preparation method thereof. The method comprises the following steps: S1, preparing a full-conjugated polymer network structure with a porous structure from a bromine functional building block, an alkyne structure building block, a reaction solvent and a catalyst through a cross-coupling reaction; s2, carrying out post-modification sulfonation on the porous full-conjugated polymer and a sulfonic acid group under the protection of nitrogen; and S3, terminating the reaction through a quencher, replacing a system solution until the pH value is neutral, and preparing the sulfonic group post-modified conjugated microporous polymer cesium adsorbent by adopting vacuum drying. The sulfonated polymer network prepared by the invention not only has a series of advantages of hierarchical porous structure, open permanent micropores, continuous pi-conjugated skeleton, abundant sulfonic acid binding sites, excellent adsorption capacity and the like, but also has good acid-base tolerance and cycling stability, and is simple in preparation process, mild in condition and suitable for industrial production. The adsorbent is a high-performance radioactive element adsorbent with a wide prospect.

The invention discloses a modified spherical graphite negative electrode material and a preparation method and application thereof.The modified spherical graphite negative electrode material comprises a graphite core, an embedded structure and a coating layer, the graphite core is spherical or spheroidic graphite, the embedded structure is achieved by embedding boron nitride nanosheets into the surface of the graphite core, and the coating layer is coated with the boron nitride nanosheets. The number of layers of the boron nitride nanosheets is 1-5, the proportion of the embedded structure is 5-15 wt%, the coating layer is one of sulfonated polypyrrole, sulfonated polyaniline or sulfonated polythiophene, the thickness of the coating layer is 5-50 nm, the surface sulfonic acid group content of the coating layer is 5-10 wt%, and the coating layer coats the embedded structure and the graphite core. The graphite negative electrode material is subjected to BNNS embedding through high-pressure homogenization, and then is coated by a sulfonated polymer surface in-situ polymerization process, so that the material is endowed with high tap density, high thermal conductivity and excellent ion transmission capability, and the graphite negative electrode material is suitable for high-energy-density power batteries and fast charging scenes.

The invention provides a tissue engineering heart valve stent with a sulfonated nano-enzyme coating as well as a preparation method and application of the tissue engineering heart valve stent, and belongs to the technical field of medical materials. The invention relates to a tissue engineering heart valve stent with a sulfonated nano-enzyme coating, which comprises an acellular matrix carrier, ruthenium / iridium-tannic acid nano-enzyme loaded on the acellular matrix carrier, and a sulfonated polymer coating fixed on the acellular matrix carrier and / or the surface of nano-particles through ultraviolet polymerization, the ruthenium / iridium-tannic acid nano-enzyme is formed by tannic acid TA, Ru < 3 + > and Ir < 3 + > through coordination. According to the invention, through double bionic activities of superoxide dismutase and nitric oxide synthase of ruthenium / iridium-tannic acid nano-enzyme and through the super-hydrophilicity and electrically neutral surface of the sulfonated polymer coating, collaborative regulation and control of O2-NO cascade catalysis and interface functions in a pathological microenvironment are realized; the structural and functional in-situ regeneration of the tissue engineering heart valve stent is promoted.

The invention discloses a grafted sulfonated polymer membrane containing a spiro structure, a preparation method of the grafted sulfonated polymer membrane and application of the grafted sulfonated polymer membrane in an electrochemical energy storage device, and belongs to the technical field of polymer separation membranes. The membrane material comprises a polymer prepared by a polymerization reaction, and monomers for the polymerization reaction comprise an aromatic monomer with a spiro indane structure and a monomer containing an imidazole group; the polymer is characterized in that in a repetitive unit of the polymer, a side chain containing a sulfonic group is grafted on a nitrogen atom of an imidazole group. The preparation method comprises the following steps: carrying out polymerization reaction on the two monomers to obtain a precursor polymer; then, reacting the precursor polymer with a sulfonating agent to realize grafting of a sulfonic group side chain on an imidazole group nitrogen atom; and finally, preparing the membrane through a solution tape casting method. According to the preparation method, a sulfonic side chain is introduced into a spiro polymer skeleton with high chemical stability in a grafting manner, so that an efficient ion conduction channel is constructed, meanwhile, the structural stability of the membrane material is kept, and the prepared membrane material shows excellent comprehensive performance in application of alkaline aqueous organic flow batteries and the like.

The invention discloses a diaphragm for a vanadium redox flow battery and a preparation method of the diaphragm, and belongs to the technical field of battery diaphragms.The preparation method comprises the steps that (1) a sulfonated polymer is dissolved in an organic solvent to prepare pouring liquid A, and the sulfonated polymer is sulfonated polyether-ether-ketone or sulfonated polyether sulfone; (2) pouring liquid B containing sulfonated polymer and alkaline filler is prepared, the alkaline filler is polyimide or a metal organic framework, and an organic ligand structure of the metal organic framework contains amino; the mass ratio of the sulfonated polymer to the alkaline filler is 1: (0.05-0.3); and (3) enabling the pouring liquid A and the pouring liquid B to form films on the two sides of a polytetrafluoroethylene film respectively to prepare the diaphragm with the asymmetric structure for the vanadium redox flow battery. Through the asymmetric design of the coatings on the two sides of the diaphragm, the obtained diaphragm for the vanadium redox flow battery is good in stability, high in oxidation resistance, low in vanadium ion permeability, high in proton conductivity, high in ion selectivity and low in preparation cost, and has a good application prospect.

A method for preparing a composite material from mineral fibers, by impregnating and then crosslinking an aqueous composition. The method is particularly effective for obtaining a composite having structuring or insulating properties. The aqueous composition includes a polyfunctional compound combined with an alpha-sulfonated polymer and a sulfo-carboxylic acid.

The invention relates to a preparation method of a hollow fiber nanofiltration membrane based on integral forming, and belongs to the technical field of nanofiltration membrane preparation. According to the method, a first membrane casting solution and a second membrane casting solution are prepared, the first membrane casting solution comprises a polymer, a pore-foaming agent, a hydrophilic additive, a solvent and an interlayer binding force additive DTES, and the second membrane casting solution comprises a sulfonated polymer, a hydrophilic additive, a pore-foaming agent and a solvent; carrying out composite spinning on the two membrane casting solutions by adopting a three-hole spinning nozzle, so that a separation layer and a supporting layer of the nanofiltration membrane are synchronously formed; an annular heating module is arranged between a spinning nozzle and a coagulating bath interface, and the film surface solvent content is controlled through heat radiation. Hydrophilic nano channels are formed through hydrolysis and self-polycondensation of DTES on an interlayer interface, meanwhile, the interlayer binding force is enhanced, the layering problem in the easy-to-integrate nanofiltration membrane preparation process is solved, the method is suitable for the fields of direct drinking water purification, biological separation, salt lake lithium extraction and the like, and the method is suitable for large-scale production.

The invention relates to the technical field of ionic membranes, and mainly provides an ionic conduction membrane and a preparation method thereof, and a flow battery. The ion conducting membrane comprises the following components in parts by mass: 5-15 parts of cyclodextrin, 70-90 parts of sulfonated polymer and 4-15 parts of fluorine-containing polymer. The flow battery formed by the ion conduction membrane provided by the technical scheme of the invention has relatively high ion conductivity, so that high-power-density operation is realized and maintained.

The invention discloses an electrolyte membrane and a preparation method thereof. The preparation method of the electrolyte membrane comprises the following steps: (1) dissolving a sulfonated polymer in an organic solvent to obtain a spinning solution of the sulfonated polymer; dissolving a polymer and a lithium salt in an organic solvent to obtain a spinning solution of the polymer; performing high-voltage electrostatic spinning on the two prepared spinning solutions to obtain a 3D curled polymer fiber membrane; (2) dissolving an organic matter in an organic solvent, adding a cobalt salt and a lanthanum salt into the organic solvent, and stirring and mixing to obtain a spinning solution; spinning the spinning solution; carrying out high-temperature sintering on the fiber membrane to obtain a pre-oxidized inorganic nanowire; (3) dissolving the pre-oxidized inorganic nanowire in an organic solvent, adding a polymer and a lithium salt, and stirring and mixing to obtain a mixed solution; and pouring the mixed solution into a 3D curled polymer fiber membrane, and drying to obtain the 3D curled polymer fiber membrane.

The invention relates to an aqueous polymer composition comprising a water-soluble sulphonated polymer which is prepared with a radical polymerization reaction in water in the presence of a compound comprising sulphur in oxidation state IV. The invention also relates to this preparation method and to a dispersing or grinding agent comprising the composition according to the invention.

This invention belongs to the field of membrane separation technology and lithium extraction technology. Specifically, it relates to a two-dimensional clay mineral lithium extraction membrane for enhanced lithium-magnesium separation. The membrane is obtained by cross-linking and modifying a two-dimensional clay mineral nanosheet suspension with a strongly positively charged functional organic compound to form a strongly positively modified two-dimensional clay nanosheet functional layer. A sulfonated polymer is then introduced for cross-linking. The strongly positively charged functional organic compound contains two or more positively charged groups, which are modified and connected to the nanosheet end faces and surfaces through hydrogen bonding, focusing on strengthening the positively charged environment at the nanosheet end faces. This invention can enhance the lithium-magnesium ion separation effect and the structural strength of the membrane, thereby improving the stability of the membrane in brine environments and showing great application potential.

The invention discloses high-crosslinking sulfonated polyhalogen styrene resin as well as a preparation method and application thereof. The preparation method of the resin comprises the following steps: firstly, enabling halogen styrene to react with a cross-linking agent to form a gel polymer; then carrying out sulfonation reaction on the gel polymer by utilizing a sulfonation reagent to obtain a sulfonated polymer; finally, post-crosslinking is realized through a Friedel-Crafts alkylation reaction, and the sulfonated resin with a high-crosslinking structure is prepared. According to the resin, deep removal of metal ion impurities is achieved through multiple action mechanisms (including ion exchange, electrostatic adsorption and coordination) between sulfonic acid groups and metal ions, and the chemical stability of the resin in an organic wet electron chemical system is remarkably enhanced by means of the electron withdrawing effect of halogen atoms and the synergistic effect of a post-crosslinking structure. In addition, halogen atoms on the surface of the resin can form hydrogen-bond interaction with hydroxyl-containing organic impurities, so that the organic impurities are synchronously removed. The highly crosslinked sulfonated polyhalogen styrene resin prepared by the method can effectively purify wet electronic chemicals, is particularly suitable for high-purity preparation of semiconductor photoresist solvents, and provides a novel efficient purification solution for the field of advanced electronic materials.

The disclosure relates to laminate structures to cover or protect substrates or surfaces. The laminate structure comprises a support layer and a self-sterilizing / antimicrobial layer comprising a sulfonated polymer, capable of killing microbes within minutes and for an extended period of time. The sulfonated polymer has a sufficient degree of sulfonation to kill in less than 120 minutes at least 90% of microbes in contact with the surfaces, and for extended protection of the surfaces for at least one month. The laminate structure is particularly suitable for protecting high-touch surfaces such as door knobs, touch-screens, tables, as well as for use with facemasks, face shields, or as self-sterilizing wraps for surgical instruments and supplies. The laminates can also be used as garments or to cover / protect personnel having contagious diseases, etc., to decrease the transmission of microbes.

The invention relates to the technical field of high polymer materials, in particular to a sulfonated polymer containing a benzimidazole structure and a preparation method and application of the sulfonated polymer. A main chain of the sulfonated polymer comprises a plurality of benzimidazole structural units; the benzimidazole structural unit is one or two of a formula 1 and a formula 2; wherein X1 is carbonyl or sulfuryl, and Y1 is a nitrogen-containing heterocyclic ring. According to the sulfonated polymer, an ion transmission channel can be constructed by virtue of the mutual synergistic effect between a benzimidazole group and a sulfonic group in a benzimidazole structural unit on a main chain of the sulfonated polymer and between the benzimidazole structural unit and other structural units or repeated units containing the sulfonic group; the ion selectivity and the conductivity of the proton exchange membrane prepared by taking the sulfonated polymer as a raw material are further improved; meanwhile, a benzimidazole structural unit is introduced, so that the proportion of ether bonds on a main chain can be effectively reduced, and the phenomenon that the main chain is broken due to attack of free radicals such as OH. And OOH. Is effectively reduced.

The present invention relates to a hybrid membrane for an all-vanadium redox flow battery and a preparation method thereof. In the preparation, a sulfonated piperazine covalent triazine framework material is used as a filler in the mixed membrane and added to a non-fluorosulfonated polymer. Compared with the prior art, the hybrid membrane prepared by the present invention has higher vanadium resistance and proton conduction ability, and exhibits excellent battery performance. The electropositivity exhibited by the particle-rich nitrogen structure enables the macroporous channels to generate Donnan exclusion to achieve high vanadium resistance, while the protonophilic property promotes the construction of a continuous hydrogen bond network in the pores, allowing rapid proton transfer; on the other hand, the sulfonic acid groups grafted on the outer surface of s-pCTF attract and conduct protons, further improving the efficiency of proton conduction through the particles; the synergistic effect of external group attraction-internal channel selective conduction enables s-pCTF particles to be uniformly distributed in the polymer as proton rapid selective transport sites, and the hybrid membrane thereof exhibits good battery performance.

The invention relates to the field of fuel cells and technologies, in particular to an electrospun composite proton exchange membrane based on polysulfonated dopamine modification and a preparation method thereof. The composite proton exchange membrane comprises a porous electrospinning fiber substrate which is coated and modified by self-polymerization of a sulfonated dopamine monomer, wherein the sulfonated dopamine monomer is any one of aromatic ring sulfonated dopamine, terminal sulfonated dopamine and amino sulfonylated dopamine; the porous electrospinning fiber substrate is filled with the trivalent cerium salt and the sulfonated polymer. By introducing the poly-sulfonated dopamine coating, the wettability and binding force of the sulfonated polymer can be remarkably improved, and uniform dispersion and fixation of Ce < 3 + > are promoted, so that the proton conductivity and chemical stability of the membrane are improved. The preparation method of the composite proton exchange membrane is simple and convenient, the composite proton exchange membrane has good interface compatibility, free radical degradation resistance and long-term operation stability, and the composite proton exchange membrane has good application prospects in proton exchange membrane fuel cells and water electrolysis devices.

The invention provides a high-temperature-resistant non-sulfonated composite filtrate reducer for drilling fluid and a preparation method of the non-sulfonated composite filtrate reducer, and particularly relates to the field of C08F. The non-sulfonated composite filtrate reducer comprises a modified natural polymer and a synthetic non-sulfonated polymer, the modified natural polymer is etherified-crosslinked double modified konjac glucomannan; the synthetic non-sulfonated polymer is an acrylic acid-itaconic acid-acrylamide terpolymer. A traditional sulfonation treatment agent is abandoned, a full-non-sulfonation system is constructed by adopting environment-friendly components such as a modified natural polymer, a synthetic non-sulfonation polymer and a bio-based modified material, and the biodegradation rate of the system is larger than or equal to 90%, EC50gt; the drilling fluid has no biotoxicity, and completely meets the drilling environmental protection standard. The drilling fluid waste does not need to be treated complexly and can be discharged after reaching the standard only through simple solid-liquid separation, compared with traditional polysulfonate drilling fluid waste treatment, the cost is reduced by 40% or above, and the method is suitable for construction in severe environment-friendly areas.

The invention relates to the technical field of high polymer materials, in particular to a block sulfonated polymer, a synthesis method of the block sulfonated polymer, a proton exchange membrane and application of the proton exchange membrane. The chain segment A2 comprises one or two of a formula 1 and a formula 2; the chain segment A1 comprises one or two of a formula 3 and a formula 4; according to the block sulfonated polymer, an ion transmission channel containing micropores is constructed by virtue of the rigidity and nonlinearity of sulfonic acid groups on the chain segment A1 and benzimidazole structures on the chain segment A1 and the chain segment A2, so that the proton exchange membrane prepared by taking the block sulfonated polymer as a raw material has excellent ion selectivity and ion conductivity; the proportion of ether bonds in the block sulfonated polymer can be effectively reduced, so that the probability that the proton exchange membrane is attacked by free radicals such as OH. And OOH. Is reduced, the chemical stability of the block sulfonated polymer and the proton exchange membrane thereof is improved, and the application range is expanded.

Miktoarm star polymers are provided either as an aqueous solution or as thin micro-flakes and the process of making the star polymers thereof. These polymers bear short polyacrylic segment(s) and long buoyant sulfonated polymer segment(s), which found to be effective additives both as cement slurry water retention and plasticizer.

A hydraulic binder composition combining a hydraulic binder compound and an alpha-sulfonated polymer A modified by reacting with a polyalkoxylated monoalcohol or with a polyalkoxylated monoamine in the presence of a sulfocarboxylic acid. A method for preparing the composition and to an agent for modifying polymer A.

According to the full-carbon-chain polyaryl polymer, the ion exchange membrane and the application, a sulfonated polymer is prepared through a coupling polymerization method for the first time, has high molecular weight, can keep good mechanical performance under the high ionization degree, has extremely low swelling in electrolyte and is not prone to aging; a rigid framework of a main chain is combined with sulfonate ions, and an obvious microphase separation structure can be formed in the membrane. In addition, when the prepared ion exchange membrane is used in a battery, conductivity and impedance tests show that the ion exchange membrane has good ion transmission capability. In the battery circulation result, the flow battery prepared from the ion exchange membrane has no obvious capacity fading after 500 cycles, and the coulombic efficiency reaches 100%, which indicates that the ion exchange membrane is suitable for the aqueous flow battery, and shows high conductivity, excellent selectivity and high energy efficiency capacity utilization rate in the battery performance; the method has strong application potential in the fields of flow cells, fuel cells, electrolyzed water, concentration cells and the like.

The invention provides a composition comprising (a) water, (b) a sulfonated polymer, a sulfonated alkyl amine compound, or a combination thereof, (c) a chelating agent, and (d) an organic compound comprising a quaternary amine, wherein the composition has a pH of less than about 7. The invention also provides a method for removing residue from a surface of a microelectronic device substrate comprising contacting the surface of the microelectronic device substrate with the compositions described herein.

This invention discloses a polyaromatic hydrocarbon for preparing proton exchange membranes, its preparation method, and its application, belonging to the field of proton exchange membrane material preparation technology. This invention solves problems such as low molecular weight, uneven sulfonation, chain breakage in sulfonated polymers, poor dimensional stability, and poor mechanical properties in proton exchange membrane materials. Using aromatic monomers and 3,5-difluorotrifluoroacetophenone as raw materials, this invention employs a superacid-catalyzed Friedel-Crafts hydroxyalkylation reaction to prepare fluorinated aromatic polymers. Then, sulfonic acid groups are introduced onto the fluorinated aromatic polymers via nucleophilic substitution followed by sulfonation, preparing monosulfonated and disulfonated fluorinated sulfonic acid polymers. Proton exchange membranes are then prepared using these polymers as raw materials. The significant polarity difference between the hydrophobic fluorinated benzene ring side groups and the hydrophilic disulfonic acid groups in this invention is more conducive to forming a microphase separation structure and constructing continuous proton transport channels. Simultaneously, the hydrophobic fluorinated segments effectively suppress membrane swelling and improve its dimensional stability.

An automatic dishwashing composition is provided including a builder; a nonionic surfactant; a poly(glutamic acid); and a dispersant polymer selected from the group consisting of: (a) a non-sulfonated hydrophobic modified polymer, comprising (i) 60 to 98 wt %, based on weight of the non-sulfonated hydrophobic modified polymer, of structural units of formula Iwherein each R1 is independently selected from a hydrogen and a —CH3 group; and (ii) 2 to 40 wt %, based on weight of the non-sulfonated hydrophobic modified polymer, of structural units of formula IIwherein each R2 is independently selected from a —C1-4 alkyl group and wherein each R3 is independently selected from a hydrogen and a methyl group; (b) a sulfonated polymer; (c) an acrylic acid homopolymer; and (d) a mixtures thereof.

Described herein are electrode active layers for energy conversion or storage devices, such as supercapacitors or batteries, comprising an active material and a binder comprising a salt of a sulfonated polymer. Also described herein are slurries for producing such active layers, composite electrodes comprising such active layers, as well as the use of such active layers in energy conversion or storage devices, and methods of making such active layers.

The preparation method comprises the following steps: S1, mixing a photocuring material, a photoinitiator, an organic solvent and a corrosion inhibitor to serve as an oil phase, taking an aqueous dispersion of an emulsifier as a water phase, and mixing and emulsifying the oil phase and the water phase to obtain an oil-in-water emulsion; s2, sodium p-styrenesulfonate is added into the oil-in-water emulsion, ultraviolet curing and washing are conducted, wet sulfonated polymer multi-core microcapsules are obtained, then ultrasonic treatment is conducted in deionized water, and sulfonated polymer multi-core microcapsule aqueous dispersion is prepared; and S3, dropwise adding aniline into the aqueous dispersion of the sulfonated polymer multi-core microcapsule, stirring, and dropwise adding an initiator aqueous solution containing protonic acid to initiate aniline polymerization, thereby obtaining the polyaniline multi-core microcapsule. When the multi-core microcapsule is used for an anticorrosive coating, even if local damage exists, the remaining core material can be protected by the wall material composite condensate, a time difference of'sequential release 'is formed, and the core material is slowly released.

An aqueous suspension of a mineral material, for example calcium carbonate, is described. The aqueous suspension is prepared by wet grinding step followed by a concentration step in the presence of at least one rheological agent R comprising phosphoric acid and an α-sulfonated polymer P which is completely or partially neutralised by a monovalent ion. A rheological agent R and the use of this mineral suspension for preparing a mass filler for paper, for preparing a paper coating slip, or for preparing a coating composition, for example a paint composition, is also described.

This invention discloses a butene hydration catalyst, its preparation method, and its applications. The butene hydration catalyst of this invention has the following structural formula: where n1 ranges from 200 to 500; R is an alkyl group. The preparation method of the butene hydration catalyst includes the following steps: modifying a sulfonated polymer with an alkylbenzene sulfonate in a solvent to obtain the butene hydration catalyst. The butene hydration catalyst of this invention exhibits both hydrophilic and lipophilic properties, promoting the contact between butene and water, improving the mass transfer efficiency between heterogeneous reactants in the reaction system, and thus enhancing the single-pass conversion rate of butene and the selectivity of the product sec-butanol. Furthermore, this invention also improves the butene hydration reaction process while preparing the butene hydration catalyst, further increasing the single-pass conversion rate of butene hydration to sec-butanol and reducing energy consumption and cost in the production process.