42 results about "Methylene bisacrylamide" patented technology

The application belongs to the technical field of dental antibacterial materials, and discloses a kind of nanometer composite antibacterial coating for dental material and preparation method thereof.Method: monomer modified arginine, monomer N-isopropyl acrylamide, monomer methyl hexyl acrylate, initiator azobisdimethylamino propanamide hydrochloride, dispersing agent cetyltrimethylammonium bromide and crosslinking agent N,N-methylene bis(acrylamide) are dissolved in water, and the reaction is carried out under protective atmosphere, dialysis, to obtain nanogel dispersion;The nanogel dispersion is mixed with the nanometer zinc oxide dispersion to obtain a nanogel composite zinc oxide antibacterial coating, and a coating is formed after coating.The nanometer composite antibacterial coating for dental material has excellent retention capacity and antibacterial performance.

The application belongs to the technical field of preparation of thermochromic hydrogel, and discloses a thermochromic hydrogel for shielding ultraviolet and near-infrared light and a preparation method and application thereof. The thermochromic hydrogel is prepared by one-pot low-temperature crosslinking with N-isopropyl acrylamide as a temperature-sensitive matrix, hydroxypropyl methyl cellulose as a modified component, titanium dioxide and cesium tungsten bronze as functional fillers, N, N-methylene bisacrylamide as a crosslinking agent, ammonium persulfate and sodium bisulfite as an initiation system. The thermochromic hydrogel realizes full-band regulation of sunlight by using the ultraviolet shielding of titanium dioxide and the near-infrared heat insulation performance of cesium tungsten bronze. The prepared hydrogel has the characteristics of high visible light transmittance, excellent solar light modulation efficiency and suitable critical transition temperature, and makes up for the defect of insufficient spectral shielding capacity of traditional single PNIPAM hydrogel. The process is mild and simple, the raw materials are cheap and easy to obtain, and the hydrogel is easy to form a film in a large area and to be prepared on a large scale, so the hydrogel can be widely applied to the fields of energy-saving and light-regulating such as intelligent windows of buildings, vehicle-mounted light-regulating glass and the like.

The application belongs to the technical field of zinc-based energy storage devices, and particularly relates to a composite gel layer modified zinc metal electrode, a preparation method thereof and application thereof in zinc-based energy storage devices. Acrylamide, sodium alginate, water, N,N-methylene bisacrylamide and ammonium persulfate are mixed to obtain a mixture; the mixture is applied to the surface of a zinc metal material, and then heat treatment is performed to initiate a polymerization reaction of acrylamide, thereby obtaining an electrode semi-product; a zinc metal salt solution is applied to the surface of the semi-product to initiate a polymerization reaction of sodium alginate, thereby obtaining the composite gel layer modified zinc metal electrode. The composite gel layer modified zinc metal electrode provided by the application exhibits higher cycle stability and a longer service life when applied to aqueous zinc ion hybrid capacitors, zinc ion batteries, gel-state zinc ion capacitors and gel-state zinc ion hybrid capacitors and other energy storage devices.

The present invention relates to the technical field of pollutant treatment, in particular to an amine-fluorine bifunctional hydrogel adsorbent, and preparation and use thereof. The present invention provides a preparation method of an amine-fluorine bifunctional hydrogel adsorbent, which comprises the following steps: uniformly mixing a fluorine-containing alkene monomer, a quaternary ammonium salt alkene monomer, a traditional Chinese medicine residue cellulose dispersion liquid, N,N′-methylene bisacrylamide and ammonium persulfate, and sequentially carrying out heating reaction, deionized water swelling and drying to obtain the amine-fluorine bifunctional hydrogel adsorbent. According to the present invention, the quaternary ammonium salt alkene monomer is introduced as a hydrophilic monomer, and the fluorine-containing alkene monomer is introduced as a hydrophobic monomer, so that the amine-fluorine bifunctional hydrogel adsorbent has a hydrophilic amine and hydrophobic fluorine dual-network interpenetrating porous structure, and the structure enhances water transmission and the mass transfer rate of a per- nd polyfluoroalkyl substance.

This invention relates to the field of biochemistry and molecular biology experimental technology, specifically to an SDS-PAGE gel containing hydroxymethyl cellulose, its preparation method, and its applications. The SDS-PAGE gel is polymerized from acrylamide monomer, N,N'-methylenebisacrylamide, sodium dodecyl sulfate, buffer reagent, initiator system, and reinforcing agent. This gel significantly improves mechanical strength, toughness, and tear resistance while maintaining excellent electrophoretic resolution and transparency, effectively solving the problems of traditional gels being fragile, difficult to handle, and easily damaged during transfer processes. The preparation method of this invention is simple and low-cost, and suitable for biochemical research fields such as protein electrophoresis analysis and Western blotting.

The application discloses a sewage treatment filtering membrane and a preparation method thereof, and relates to the technical field of membrane materials. In the preparation of the sewage treatment filtering membrane, an amphoteric ion intermediate is reacted with 1,3-propane sulfone lactone to obtain an amphoteric ion monomer; the amphoteric ion monomer and N,N-methylene bisacrylamide are in-situ cross-linked and polymerized in a polyvinylidene fluoride solution to obtain a casting solution; the casting solution is used to prepare a functionalized polyvinylidene fluoride membrane through a non-solvent induced phase separation technology; hydrochloric acid dopamine and polyethylene imine are co-deposited on the surface of the functionalized polyvinylidene fluoride membrane to obtain a porous polyvinylidene fluoride membrane; and copper sulfate pentahydrate is used to catalyze modified indole derivatives to be grafted on the surface of the porous polyvinylidene fluoride membrane, so as to obtain the sewage treatment filtering membrane. The sewage treatment filtering membrane prepared by the application has excellent hydrophilic, anti-pollution and antibacterial properties.

The application discloses a kind of PH dual-response type concrete multifunctional admixture and preparation method thereof.The concrete multifunctional admixture preparation method is as follows: first, carboxymethyl chitosan, chitosan, nano silicon dioxide, cellulose acetate, N,N'-methylene bisacrylamide, ammonium persulfate / tetramethyl ethylenediamine mixture, nano hydrated calcium silicate are added to acetic acid solution, and hybrid particles are obtained after ultrasonic continuous dispersion;Second, polycarboxylate superplasticizer, acrylamide, sodium alginate and nano halloysite particles are uniformly stirred by magnetic force to form a mixed dispersion solution;Finally, hybrid particles are added to the mixed dispersion solution to obtain a concrete multifunctional admixture.The concrete admixture can not only remain stable under polycarboxylate superplasticizer solution storage conditions, but also can not increase the viscosity of concrete after being added to concrete, so that it can maintain good mixing performance, achieve good water retention and early strength effect.

The application provides a monovalent ionic liquid fiber membrane, a preparation method and application in recovery of palladium, and belongs to the technical field of adsorbing materials, and comprises the following steps: mixing dichloromethane and acetic acid to obtain a first solution; dissolving cellulose acetate and ionic liquid in the first solution to obtain a second solution; the ionic liquid is any one of an alkenyl imidazole salt, a quaternary ammonium salt containing an alkenyl group, a quaternary phosphonium salt containing an alkenyl group, a pyridine salt containing an alkenyl group or a morpholine salt containing an alkenyl group; N,N'-methylene bisacrylamide and benzoyl peroxide are added into the second solution, heated, stirred and warmed to obtain a third solution, and the third solution is subjected to high-pressure electrospinning to obtain the monovalent ionic liquid fiber membrane; or the second solution is subjected to high-pressure electrospinning and then irradiation to obtain the monovalent ionic liquid fiber membrane. The monovalent ionic liquid fiber membrane prepared by the application can realize rapid adsorption and easy regeneration and desorption, and can efficiently and selectively adsorb and recover palladium from a complex acidic solution.

The application discloses a preparation method of a hydrogen peroxide and zinc ion double-response hydrogel precursor, and the method comprises the following steps: firstly, preparing a Fe-MOF suspension, and then mixing the Fe-MOF suspension with a buffer solution of acrylamide and N,N-methylene bisacrylamide, and a solution containing an oxidant and tetramethylethylenediamine to obtain a hydrogel precursor. Then, the hydrogel precursor is dried to obtain a hydrogel. The application further discloses the use of the hydrogel precursor and the hydrogel. According to the preparation method, the reaction time is short, the preparation method is simple, and the method has certain universality. The prepared hydrogel material has good mechanical properties, a large specific surface area, a three-dimensional network structure, good electrical conductivity, and the property of fast response to changes, and can be used in electrochemical sensors, and has wide application prospects in the fields of biological detection, disease diagnosis, food hygiene and the like.

The application discloses a silage fermentation accelerator based on enzyme and bacteria cooperation and a preparation method thereof, and belongs to the technical field of feed preparation, and comprises the following steps: S1: taking sterilized selenium-rich wheat bran and sterilized yeast hydrolysate as carriers, mixing cellulase, xylanase, ferulic acid esterase, phytase and tannase to prepare a composite carrier enzyme; mixing composite bacteria powder and selenium-rich yeast powder to prepare an active mixture; mixing xylo-oligosaccharide, betaine and vitamin E to prepare active material to be embedded; S2: taking chitosan and sodium alginate as a skeleton, mixing N-isopropyl acrylamide, ammonium persulfate and N,N'-methylene bisacrylamide, and in-situ polymerizing to construct a temperature-sensitive hydrogel, and then performing dialysis, freeze-drying and grinding to prepare a temperature-sensitive embedding liquid; S3: rotating and shearing the active material to be embedded and the temperature-sensitive embedding liquid to prepare embedding suspension liquid to be sprayed, and then performing continuous spray embedding to prepare temperature-changing microcapsule particles, namely the silage fermentation accelerator based on enzyme and bacteria cooperation; and the application promotes silage fermentation.

The application relates to the technical field of fertilizers, and discloses a chitosan-grafted polyacrylic acid slow-release fertilizer and a preparation method thereof. The chitosan-grafted polyacrylic acid slow-release fertilizer is obtained by spray drying of a nutrient solution, a carrier dispersion liquid and a calcium chloride aqueous solution; the nutrient solution is obtained by mixing urea, potassium dihydrogen phosphate, zinc sulfate heptahydrate, iron sodium ethylenediaminetetraacetate, amino acid and deionized water; the carrier dispersion liquid is obtained by mixing a porous carrier, deionized water and polyoxyethylene sorbitan monooleate; the porous carrier is prepared from sulfonated chitosan powder, deionized water, an acrylic acid neutralizing solution, ammonium persulfate and N,N'-methylenebisacrylamide; and the sulfonated chitosan powder is prepared from formamide, chlorosulfonic acid and chitosan powder. The application can reduce the release rate of nutrients and improve the utilization rate of nutrients.

A supramolecular hydrogel film for reversible adhesion of frozen food, a production method, and an application are provided. The production method includes mixing the arabinoxylan solution with 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and N-hydroxysuccinimide, and performing an ice bath reaction to obtain the carboxylated arabinoxylan solution; adding dopamine hydrochloride, performing a stirring, dialysis and freeze-drying to obtain the arabinoxylan-dopamine graft; adding acrylic acid and metal ions to the ethanol aqueous solution, mixing with the arabinoxylan-dopamine graft, and performing a stirring, and then mixing with N,N′-methylenebisacrylamide and ammonium persulfate to obtain the supramolecular hydrogel film. The supramolecular hydrogel film has the characteristics of light-controlled reversible adhesion, high mechanical strength, high gas barrier properties and degradability, and is suitable for various frozen foods.

The present application relates to the technical field of photocatalytic hydrogen production, and discloses a preparation method and application of a cellulose nanocrystal-embedded composite hydrogel photocatalytic material, which comprises the following steps: dispersing a photocatalyst in water, adding 2-methyl-2-propenoic acid-2-(2-methoxyethoxy) ethyl ester, polyethylene glycol methyl ether methacrylate, N,N'-methylene bisacrylamide, cellulose nanocrystals and sodium alginate, uniformly stirring, and then performing deoxygenation treatment; adding an initiator and an accelerator, and heating to perform polymerization reaction; after the reaction, the hydrogel is taken out and soaked in a calcium chloride solution, and finally the composite hydrogel photocatalytic material is obtained. The present application greatly improves the light absorption capacity of the composite hydrogel by embedding cellulose nanocrystals in the hydrogel. Loading the photocatalyst into the composite hydrogel embedded with cellulose nanocrystals can achieve effective dispersion by utilizing the three-dimensional network structure, thereby avoiding the aggregation effect and improving the hydrogen evolution efficiency.

The application discloses a preparation method of high-weather-resistant water-based acrylic resin and belongs to the technical field of acrylic resin preparation. The preparation method of the high-weather-resistant water-based acrylic resin comprises the following steps: step one, methyl methacrylate, styrene, ethyl acrylate, isooctyl acrylate and modified polyamide are added into a container, and stirring and mixing are carried out to obtain mixed monomers; step two, distilled water, hydroxyethyl cellulose, sodium chloride and sodium dodecyl sulfate are added into a reaction kettle, and stirring and mixing are carried out to obtain an aqueous phase mixture; step three, the mixed monomers, the aqueous phase mixture, azobisisobutyronitrile, N,N'-methylene bisacrylamide and a composite weathering agent are sequentially added into a reaction container, heating and stirring reaction is carried out, after the reaction is completed, cooling, filtration, washing and drying are carried out, and the water-based acrylic resin is obtained. The water-based acrylic resin prepared by the method has excellent weather resistance and chemical corrosion resistance.

This invention belongs to the field of green organic synthesis and catalysis technology, and discloses a method for preparing a polyionic liquid catalyst with a double hydrogen bond donor, comprising the following steps: dissolving 1-vinylimidazolium and 2-chloroethyl urea in deionized water, heating and stirring the reaction; after the reaction, washing and rotary evaporation to remove the solvent to obtain 1-vinyl-3-ureaethylimidazolium chloride; mixing 1-vinyl-3-ureaethylimidazolium chloride, divinylbenzene, and N,N'-methylenebisacrylamide, adding the solvent N,N'-dimethylformamide, adding an initiator, heating and stirring the reaction; after the reaction, the product precipitates from the mixed solution, the solid powder is collected by vacuum filtration, washed, and vacuum dried to obtain a polyionic liquid catalyst containing urea and amide groups with a double hydrogen bond donor. This invention constructs a multifunctional catalytic system with both a double hydrogen bond donor and a nucleophilic chloride ion active site, and the synergistic effect of the two significantly improves the catalytic efficiency.

The present application relates to the oil field chemical profile control and water shutoff technical field, and particularly relates to an environment-friendly high-temperature and high-salt pre-crosslinking particle water shutoff agent, a preparation method and application.The raw materials of the pre-crosslinking particle water shutoff agent include polymer monomer materials, an initiator, an organic solvent, a filler and water, and further include methylene bisacrylamide, a silane coupling agent, water glass, an organic metal crosslinking agent and sodium citrate.The water shutoff agent has a high plugging rate and a good plugging effect, is particularly suitable for plugging channels of Darcy levels, and fully meets the requirements of overseas markets in terms of environmental protection and high plugging performance;the water shutoff agent has the characteristics of environmental protection and safety, adjustable particle size, high strength, high temperature resistance, high salt SSS resistance, a simple preparation process, no need for heating, low cost and easy popularization.

The application provides a double-tail type hydrophobic monomer and a preparation method thereof, a polysaccharide modified polyacrylamide emulsion and a fracturing fluid, the double-tail type hydrophobic monomer has the following structure: wherein R1 is selected from a C6-C18 saturated alkyl group, a C6-C18 aryl group, a C6-C18 alkyl aryl group, a C6-C18 alkyl acid group, a C6-C18 alkyl alcohol group, a C6-C18 alkyl ester group or a C6-C18 alkyl benzene sulfonic acid group; and X is selected from chlorine, bromine or iodine. The double-tail type hydrophobic monomer, a water-soluble monomer and a functional monomer N,N'-methylene bisacrylamide are copolymerized by using a dispersion polymerization method, reversible physical cross-linking is formed through the association of hydrophobic groups, a huge molecular space network structure is formed, and the polymer solution has high viscosity, good temperature resistance, salt resistance and shear resistance at a low concentration.

The application provides a binary ionic liquid fiber membrane, a preparation method and application in adsorption of palladium, and belongs to the technical field of adsorption materials, and comprises the following steps: mixing dichloromethane and acetic acid to obtain a first solution; dissolving cellulose acetate, a first ionic liquid and a second ionic liquid in the first solution to obtain a second solution; the first ionic liquid and the second ionic liquid are alkenyl imidazole salts with different length alkyl side chain molecular structures; adding N,N'-methylene bisacrylamide and benzoyl peroxide into the second solution, heating, stirring and warming to obtain a third solution; performing high-pressure electrospinning on the third solution to obtain a binary ionic liquid fiber membrane; or performing irradiation on the second solution after high-pressure electrospinning to obtain a binary ionic liquid fiber membrane. The binary ionic liquid fiber membrane prepared by the application can efficiently and selectively adsorb and recover palladium from a complex acidic solution, and has the advantages of faster adsorption speed, better selectivity and better salt resistance.

A hydrophilic and antifouling polyethersulfone hollow fiber membrane, its preparation method, and its applications belong to the field of polymer separation membrane material technology. The process includes: 1) Casting solution preparation: dissolving polyethersulfone in N,N-dimethylacetamide, adding polyethylene glycol 400, polyvinylpyrrolidone, Tween 60, and N,N-methylenebisacrylamide to prepare the casting solution; 2) Spinning: extruding the casting solution and core solution through a spinneret, and solidifying them in a coagulation bath to form hollow fiber membrane filaments; 3) Hydrophilic modification: first immersing the hollow fiber membrane filaments in a hydrophilic modification solution, then subjecting them to a microwave crosslinking reaction in a microwave radiation chamber, and finally drying them in a hot air chamber to remove surface moisture. This hollow fiber membrane exhibits excellent comprehensive performance, combining low contact angle, high pure water flux, and excellent antifouling ability. The hydrophilic modification is uniform and thorough, improving product reliability. It can be produced continuously in an integrated manner with low production costs, and is widely used in household water purification, seawater desalination, and industrial wastewater treatment.

The application belongs to the technical field of lost circulation control gels, and particularly relates to a composite gel material and a preparation method and application thereof. The composite gel material comprises the following raw materials: a quaternary ammonium salt type cationic modified copolymer, carboxymethyl chitosan, silane modified basalt fiber, an initiator, N,N-methylene bisacrylamide, inorganic nano filler, octadecyl methacrylate and a flame retardant. The composite gel material has excellent plugging compactness, mechanical bearing capacity, environmental adaptability and long-term stability, can quickly adapt to the complex working conditions such as low pressure, fracture development and multiple media in the broken goaf, can form a firm plugging barrier through physical interception and chemical adsorption, can resist the erosion of drilling fluid and the impact of formation pressure, and can endow the material with self-repairing, anti-pollution and flame-retardant properties through dynamic bonding and functional groups, so as to solve the technical problems of weak interface bonding, easy peeling, poor crack resistance and narrow application range of the traditional lost circulation control materials.

The application relates to a high-temperature-resistant and salt-resistant modified organic resin polymer and a preparation method and application thereof, and belongs to the field of oilfield treating agents. The high-temperature-resistant and salt-resistant modified organic resin polymer comprises the following components in parts by weight: acrylamidoethyl dimethyl benzyl ammonium chloride 18-20 parts, 2-acrylamido-2-methylpropane sulfonic acid 14-16 parts, N-phenyl acrylamide 10-14 parts, N,N'-methylene bisacrylamide 0.5-0.9 parts, azobis-dicyanopentanoic acid 0.3-0.5 parts, N-vinyl caprolactam 10-12 parts, N-(hydroxymethyl)-2-methyl-2-acrylamide 10-12 parts, dimethyl diallyl ammonium chloride 8-10 parts, modified nanoscale montmorillonite 6-8 parts, polyethylene glycol dipropylene acid ester 0.3-0.5 parts and sodium bisulfite 0.1-0.2 parts. The application solves the problem of insufficient temperature resistance and salt resistance of polymer additives in the development of complex oil and gas fields.

This invention discloses a method for preparing a single-electrode wearable triboelectric nanogenerator based on a flexible hydrogel electrode of MXene. A mixed solution of acrylamide, tannic acid, and sodium alginate is prepared as a precursor solution A. An aqueous solution of MXene nanosheets is prepared as a dispersion solution B. Dispersion solution B is slowly added to precursor solution A. An initiator, ammonium persulfate, a crosslinking agent, N,N'-methylenebisacrylamide, and an accelerator, N,N,N',N'-tetramethylethylenediamine are added sequentially to the mixture. The mixture is then injected into a polytetrafluoroethylene mold, which is placed in an oven to allow it to stand and form a nascent gel. The nascent gel is removed from the mold and immersed in an anhydrous calcium chloride aqueous solution at room temperature to allow the carboxyl groups on the sodium alginate molecular chain to undergo ionic crosslinking with calcium ions in the solution. The gel is then removed from the anhydrous calcium chloride aqueous solution and rinsed to obtain an MXene-PAM-SA-TA composite hydrogel electrode. The surface of the MXene-PAM-SA-TA composite hydrogel electrode is reacted with a benzophenone-modified polydimethylsiloxane friction layer to fabricate a triboelectric nanogenerator.

The application discloses a kind of composite membrane for coal chemical industry wastewater treatment and preparation method thereof, belong to coal chemical industry wastewater treatment technical field, preparation steps are as follows: base film is placed in cold plasma processor and is handled, then it is transferred to pyridine and deionized water mixture, temperature 65-75 ℃, 3-chloro-2-hydroxypropyl methyl diallyl ammonium chloride is added, and heat preservation treatment 2-3h, obtain pretreatment film;Acrylic acid, acrylamide are added to acetic acid solution, after stirring, modified chitosan, potassium persulfate and N,N'-methylene bisacrylamide are added, continue stirring 2-3h, obtain treatment liquid;Pretreatment film is soaked in treatment liquid, nitrogen atmosphere, 60 ℃ is handled 2h, the application composite membrane can overcome the problem that existing treatment film is poor in use effect in treating wastewater containing oxidant, and stable performance, with high hydrophilicity, pollution resistance, adsorption, preparation method is simple, easy to scale production.

This invention belongs to the technical field of thermoelectric materials and functional polymer materials, specifically relating to a thermoelectric hydrogel based on the synergistic enhancement of zwitterionic and polar solvents, its method, and applications. The thermoelectric hydrogel is obtained by polymerizing a precursor solution to form a gel matrix, followed by immersion in an immersion solution to introduce a potassium ferrocyanide / potassium ferrocyanide redox couple. The precursor solution is prepared by mixing acrylamide, N-isopropylacrylamide, dimethyl sulfoxide, N,N-dimethylformamide, 1-ethyl-3-methylimidazolium tetrafluoroborate, the zwitterionic monomer [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfonic acid propyl)ammonium hydroxide, the crosslinking agent N,N'-methylenebisacrylamide, a photoinitiator, and deionized water. This invention prepares a thermoelectric hydrogel with high mechanical strength, high ductility, and a high Seebeck coefficient, and also exhibits good temperature resistance.

The application discloses a kind of high-efficiency histidine-rich protein separation chromatography materials P (NIPAM-co-AAc)-PAMAM@Cu and preparation method thereof, belong to functional polymer chromatography material technical field;Its preparation method includes the following steps: with azobisdimethyl isobutyronitrile (AIBN) as initiator, N,N-methylene bisacrylamide (MBA) is used as crosslinking agent, N-isopropyl acrylamide (NIPAM) and acrylic acid (AAc) are used as monomer, polyamidoamine (PAMAM) is used as function group, prepare P (NIPAM-co-AAc)-PAMAM hydrogel, after chelation with copper nitrate, finally the chromatography material P (NIPAM-co-AAc)-PAMAM@Cu is prepared.The chromatography material prepared by the application, under certain conditions, the equilibrium adsorption capacity of BHb, BSA, Lyz is 646.23mg / g, 108.33mg / g and 56.24mg / g respectively, has the advantages of large adsorption capacity and high selectivity for histidine-rich protein;And the chromatography material has good separation performance and cyclic regeneration, provides a new way for the separation and purification of histidine-rich protein.

The application discloses a kind of high oxygen permeability silicon hydrogel nanocomposites and its preparation method.The raw material according to mass fraction includes the following components: A.8-18 parts of surface modified carboxyl nanosilica;B.30-40 parts of hydroxyethyl methacrylate;C.3-7 parts of methacryloyloxy functional polyether;D.0.2-0.5 parts of N,N'-methylene bisacrylamide;E.0.3-0.8 parts of initiator.In the scheme, the surface modified carboxyl nanosilica is added, which is in a highly dispersed state in the hydrogel system, greatly improving the uniformity of the microstructure of the material. The addition of methacryloyloxy polyether can adjust the interfacial polarity of other monomers, enabling the synergistic construction of continuous oxygen permeation channels and mechanical reinforcement at the molecular level, ultimately achieving the simultaneous optimization of oxygen flux improvement, mechanical properties and long-term structural stability.

The application belongs to the technical field of self-humidifying membrane electrode, and relates to a proton conductive hydrophilic polymer for a self-humidifying membrane electrode and a preparation method and application thereof. The preparation method comprises the following steps: 2-acrylamido-2-methylpropanesulfonic acid, amino or hydroxyl-containing olefin monomer, potassium persulfate, tetramethylethylenediamine and N,N'-methylenebisacrylamide are dissolved in water according to a molar ratio of 1:(0.05-0.15):(0.001-0.004):(0.002-0.01):(0.04-0.14) and uniformly mixed; the mixed solution is reacted at 50-70 DEG C for 6-12 h to obtain a crosslinked polymer; the crosslinked polymer is filtered, washed and dried, and the hydrophilic polymer is obtained; the amino or hydroxyl-containing olefin monomer is at least one of methacrylamide, hydroxyethyl methacrylate and hydroxypropyl methacrylate. The side chain of the hydrophilic polymer is rich in sulfonic acid groups and amino / hydroxyl groups, and the hydrophilic polymer has good hydrophilicity and proton conductivity.

This invention discloses a toughening curing liquid, its preparation method, and its application. The toughening curing liquid comprises the following raw material components by weight: 70-80 parts of silicate cement, 20-30 parts of admixture, 15-25 parts of organic monomer, 1-2 parts of crosslinking agent, 0.1-2 parts of initiator, 5-10 parts of expanding agent, 0.01-0.1 parts of fiber, and 70-100 parts of water. The admixture is one or two of fly ash or coal gasification slag powder with a particle size <45μm. The organic monomer is acrylamide monomer, and the crosslinking agent is N,N-methylenebisacrylamide. The initiator is ammonium persulfate or potassium persulfate. The expanding agent is calcium oxide-calcium sulfoaluminate expanding agent, and the fiber includes polypropylene fibers with a diameter of 18-48μm and a length of 4-6mm. Toughening liquid is used to prepare tough cement soil for underground continuous wall curtains. It can resist mining stress disturbance. When mining stress is transmitted to the continuous wall, the tough structure formed in the wall will undergo elastic deformation, avoiding cracks, splits or deformation damage to the wall.