537 results about "Itaconic acid" patented technology

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

The invention relates to the technical field of oil and gas field exploitation, and discloses a drag reducer for a multifunctional fracturing fluid and a preparation method thereof.The preparation method of the drag reducer for the multifunctional fracturing fluid comprises the steps that acrylic acid, acrylamide, 2-acrylamido-2-methylpropanesulfonic acid and modified itaconic acid are added into deionized water, stirring and mixing are conducted, and the drag reducer for the multifunctional fracturing fluid is obtained. Nitrogen is introduced for 30-40 min to remove oxygen, then azobis (isobutylamidine) hydrochloride is added, the mixture is stirred to react for 48-72 h at the temperature of 45-50 DEG C, and a polymer solution is obtained; and directly and uniformly mixing the polymer solution, the compatilizer and the modified nano silicon dioxide, and reacting in a magnetic stirrer at 60-70 DEG C for 1.5-2 hours to obtain the drag reducer for the multifunctional fracturing fluid. The drag reducer has a good drag reduction effect, and the hydrophobicity, the temperature resistance, the salt resistance and the shear resistance are improved.

The invention relates to the technical field of detection kits, in particular to a preparation method of fluorescent microspheres, the fluorescent microspheres and a preparation method of a kit. According to the invention, 4-vinylbenzoic acid, dibenzoylmethane and phenanthroline are used as ligands to prepare the europium complex; the prepared europium complex, styrene and lauryl methacrylate are subjected to first-stage copolymerization polymerization to obtain a polymer core with the europium complex, itaconic acid is added for continuous polymerization in the second-stage polymerization process, and the prepared fluorescent microspheres are uniform in size, high in fluorescence intensity and high in stability. The prepared detection kit has the advantages of high detection sensitivity and stable and reliable detection effect when being used for detecting the myocardial injury marker cTnI.

The invention belongs to the technical field of high polymer materials, and particularly relates to bio-based light-cured polyurethane acrylate resin as well as a preparation method and application thereof. The preparation method of the bio-based light-cured polyurethane acrylate resin comprises the following steps: (1) mixing a catalyst, a first polymerization inhibitor, first hydroxyl acrylate and itaconic acid, stirring and reacting at 90-120 DEG C for 6-9 hours to obtain a reaction product, then adding epoxidized soybean oil, and stirring at 90-120 DEG C for 3-5 hours to obtain a prepolymer; and (2) cooling the prepolymer obtained in the step (1) to room temperature, dropwise adding second acrylic hydroxyl ester and diisocyanate, and then stirring and reacting at 30-60 DEG C for 1.5-4 hours until an NCO infrared peak value disappears, thereby obtaining the polyurethane acrylate. The resin is high in bio-based content, moderate in viscosity, good in flexibility, high in hardness, strong in adhesive force, high in glossiness, small in smell and good in storage stability, and is suitable for being applied to preparation of UV curing coatings, UV curing printing ink, UV curing adhesives, 3D printing materials and nail polish glue.

The invention discloses an antistatic polyester fiber and a preparation method thereof, and relates to the field of fibers. When the antistatic polyester fiber is prepared, N, N-dimethylethanolamine reacts with allyl chloride, and then dichloro phthalocyanine silicon is grafted to obtain modified silicon phthalocyanine; polymerizing terephthalic acid, itaconic acid and ethylene glycol, and reacting with fluorescein isothiocyanate and modified silicon phthalocyanine in sequence to obtain modified polyester chips; the preparation method comprises the following steps: reacting phosphonitrilic chloride trimer with 3-hydroxy-5-nitropyridazine, and reducing to obtain a flame retardant; and carrying out melt spinning on the modified polyester chips and a flame retardant, and reacting to obtain the antistatic polyester fiber. The antistatic polyester fiber prepared by the invention has excellent antistatic property, antibacterial property, flame retardance and mechanical property.

The invention relates to a corrosion and scale inhibitor for TRT and a preparation method of the corrosion and scale inhibitor, and relates to the technical field of chemical reagents. The corrosion and scale inhibitor is prepared from the following components in percentage by mass: 15 to 20 percent of morpholine, 25 to 30 percent of aminoethyl ethanolamine, 15 to 20 percent of 1-hydroxyethyl-2-undecylimidazoline onium salt, 12 to 18 percent of sodium polyaspartate, 8 to 12 percent of itaconic acid-allylsulfonic acid copolymer, 1 to 3 percent of alkyl glycoside and the balance of a mixture of water and glycerol in a mass ratio of 1 to (1 to 3). The corrosion and scale inhibitor disclosed by the invention can synchronously inhibit corrosion of an acid medium and scale deposition of salts such as NH4Cl and the like, and the corrosion inhibition rate and the scale inhibition rate are effectively improved.

The invention relates to a carboxylic acid ligand-copper metal organic framework nano material, a preparation method thereof and an injection. The carboxylic acid ligand-copper metal organic framework nano material is of a polycrystal MOF structure formed by connecting carboxylic acid ligands and copper ions through coordinate bonds; the carboxylic acid ligand comprises at least one of dicarboxylic acid and tricarboxylic acid; preferably, the dicarboxylic acid comprises at least one of itaconic acid and fumaric acid, and the tricarboxylic acid comprises at least one of aconitic acid and citric acid; the valence states of the copper ions comprise zero valence, + 1 valence and + 2 valence; preferably, based on the total amount of the copper ions being 100 at%, the total content of Cu0 and Cu + is 85-90 at%, and the content of Cu2 + is 10-15 at%.

The invention relates to the technical field of polymer compositions, and particularly discloses a degradable bio-based food packaging material and a preparation method thereof.The degradable bio-based food packaging material is prepared from polylactic acid, ITA esterified bacterial cellulose, CSL-ITA esterified bacterial cellulose, polycaprolactone glycol, acetyl tributyl citrate, a photoinitiator and tocopherol; the preparation method comprises the following steps: esterifying bacterial cellulose hydrogel with itaconic anhydride, grafting with sodium copper chlorophyllin, dehydrating with gradient ethanol, and drying with supercritical CO2 to obtain modified powder; according to the preparation method, the interfacial compatibility of the bacterial cellulose and the polylactic acid is enhanced through ITA esterification, the illumination antibacterial function is given by utilizing CSL grafting, the polycaprolactone glycol and the acetyl tributyl citrate are synergistically used for toughening and improving the brittleness, the photoinitiator is added, the photoinitiator is added for mixing, and ultraviolet crosslinking curing is performed after film forming. The tocopherol protects the stability of the antibacterial structure of the CSL, the water resistance is improved through photo-crosslinking, and the material is degradable and meets the food packaging requirement.

The invention relates to the technical field of high polymer materials, and discloses self-repairing bio-based polyester resin for a matte powder coating as well as a preparation method and application of the self-repairing bio-based polyester resin. The bio-based polyester resin is prepared from the following preparation raw materials in percentage by mole: 20 mol% to 40 mol% of bio-based flexible diol, 20 mol% to 35 mol% of bio-based furandicarboxylic acid, 10 mol% to 25 mol% of isosorbide, 5 mol% to 25 mol% of itaconic acid, 1 mol% to 15 mol% of long-chain bio-based aliphatic dibasic acid, 1 mol% to 10 mol% of bio-based citric acid, 0.1 mol% to 2.0 mol% of zinc acetylacetonate, 0.1 mol% to 1.0 mol% of a microcapsule corrosion inhibitor, 0.1 mol% to 1.0 mol% of an esterification catalyst and 0.1 mol% to 1.5 mol% of an antioxidant. The bio-based polyester resin does not contain petroleum-based monomers and is high in biochar content.

The invention provides anti-erosion hydraulic concrete and a preparation method thereof, and belongs to the technical field of concrete. The concrete comprises the following components: composite cement, high-activity nano-modified metakaolin, blast furnace slag powder, low-calcium fly ash, coarse aggregate, natural river sand fine aggregate, granite machine-made sand fine aggregate, an erosion inhibitor, a functional additive, an early-strength polycarboxylic high-performance water reducer, a composite air entraining agent and the like. The composite cement comprises sulphoaluminate cement, Portland cement and polymer waterproof mortar. The high-activity nano modified metakaolin is obtained by modifying metakaolin with an organic silicon-ZnO composite emulsion and then drying. The erosion inhibitor comprises organic carboxylate, a hydrophobic-crystallization complexing agent and a pH buffer type corrosion inhibitor. The functional auxiliary agent comprises an itaconic acid and acrylic acid copolymer, a JRY-F concrete waterproof agent and polyethylene glycol-400 dilaurate. The composite air entraining agent comprises liquid sodium abietate and sodium alpha-olefin sulfonate. Through component synergism, modification and grading, an anti-erosion barrier is constructed.

The invention discloses a silane-crosslinked low-smoke halogen-free flame-retardant oil-resistant polyolefin cable material and a preparation method thereof. The method comprises the following steps: preparing a bio-based polyesteramide toughening phase which is pre-polymerized by castor oil-based polyamide and poly (butylene adipate-co-terephthalate) and is terminated by itaconic anhydride; the preparation method comprises the following steps: self-assembling phytic acid and melamine to wrap ammonium polyphosphate, so as to prepare supramolecular flame-retardant gel powder; the method comprises the following steps: grafting aramid pulp fibers by using a phosphorus-containing silane coupling agent to prepare a reactive liquid crystal reinforced phase; the preparation method comprises the following steps: blending and banburying the components with a hydrogenated styrene-isoprene-styrene block copolymer, an antioxidant and a peroxide cross-linking agent, carrying out dynamic vulcanization and interface bonding, and carrying out extrusion and electron beam irradiation to finally crosslink. An interpenetrating-topology network structure is formed in the prepared cable material, the crosslinking degree is larger than or equal to 82%, and the cable material is rapid in crosslinking, excellent in oil resistance, low in smoke and free of toxicity and is particularly suitable for super high-rise building hanging cables, deep sea exploration cables and new energy automobile liquid cooling cables.

The invention discloses a synthesis method of special bio-based unsaturated polyester resin for zero-crystalline silicon quartz stone, which comprises the following steps: firstly, putting bio-based dihydric alcohol, 2, 5-furandicarboxylic acid, itaconic acid, an antioxidant and a polymerization inhibitor into a reaction kettle, heating to 205-210 DEG C, carrying out polymerization reaction for 2-4 hours, then vacuumizing for 2-3 hours, and cooling to room temperature to obtain the special bio-based unsaturated polyester resin for zero-crystalline silicon quartz stone. When the reaction acid value is tested to be smaller than 25 mgKOH / g and the cone plate viscosity at 125 DEG C is 500-900 mpa.s, the reaction endpoint is reached, finally, a bio-based crosslinking monomer is added for dilution, and the bio-based unsaturated polyester resin special for the zero-crystallization silicon quartz stone is obtained. The bio-based unsaturated polyester resin special for the zero-crystalline silicon quartz stone synthesized by the method can meet the requirements of a zero-crystalline silicon quartz stone production process, and solves the problems that a zero-crystalline silicon quartz stone plate is easy to generate surface pulverization corrosion, glass explosion and the like.

The invention relates to the technical field of water-based propylene ink, and discloses high-stability water-based propylene ink and a preparation method thereof.The high-stability water-based propylene ink is prepared from, by mass, 30-35 parts of pigment, 10-15 parts of modified dispersing agent, 2-5 parts of modified nano chromic oxide, 1-2 parts of resin, 0.5-1 part of anti-settling agent and 40-50 parts of solvent. Acrylic resin formed by modified cellulose, acrylic acid and itaconic acid serves as a dispersing agent of the water-based propylene ink, the motion resistance of pigment sinking can be increased, the pigment sinking phenomenon is further prevented, and the stability of the water-based propylene ink is remarkably improved; the side chain of the acrylic resin can be adsorbed into the cavity structure of carboxymethyl-beta-cyclodextrin in the modified cellulose, so that the stability of the acrylic resin in the water-based propylene ink can be further enhanced, and the effect of preventing the pigment from settling can be better exerted; tannic acid in the modified nano chromic oxide contains a large number of hydrophobic benzene rings, so that the water resistance of the water-based propylene ink can be enhanced.

The invention relates to the technical field of rubber materials, in particular to a wear-resistant non-slip rubber outsole material and a preparation method of the wear-resistant non-slip rubber outsole material. The rubber material is prepared from the following components in parts by mass: 10 to 40 parts of natural rubber, 10 to 20 parts of epoxidized natural rubber, 40 to 80 parts of itaconate rubber, 10 to 60 parts of rice husk white carbon black, 5 to 20 parts of lignin, 5 to 20 parts of cellulose filler, 1 to 6 parts of coupling agent, 1 to 6 parts of dispersing agent, 0.5 to 2 parts of paraffin, 1 to 5 parts of resin, 1 to 3 parts of antioxidant, 1 to 5 parts of active agent, 0.5 to 2 parts of stearic acid, 1 to 3 parts of accelerant and 1 to 3 parts of sulfur. According to the invention, a bio-based rubber material is used as a matrix, various reinforcing fillers and processing aids from bio-based sources are used, the mechanical strength, wear resistance and slip resistance of the material are improved through a modified composite technology, and a material support is provided for green and sustainable development of shoe materials.

The invention relates to the technical field of well drilling plugging agents, in particular to a high-strength consolidation type plugging agent. Comprising the following components in parts by weight: 30-68 parts of a polymer matrix, 15-36 parts of composite gel, 8-16 parts of a coagulator, 5-12 parts of an initiator, 7-12 parts of a nano material, 6-21 parts of a flexibilizer, 6-13 parts of a cross-linking agent and 2-8 parts of a flame retardant, the polymer matrix is prepared by taking ethyl acrylate and butyl acrylate as main monomers, methoxyethyl acrylate as a functional monomer and monobutyl itaconate as a vulcanization point monomer through copolymerization; the mass ratio of the ethyl acrylate to the butyl acrylate to the methoxyethyl acrylate to the monobutyl itaconate is (2-3): (1-2): (1-3): 1. The plugging agent has controllable curing time, is suitable for fractured and karst cave leakage layers, is high in plugging success rate, and can effectively improve the pressure-bearing capacity of stratums. And the plugging agent has good temperature resistance and is suitable for plugging construction in a high-temperature environment.

The invention relates to an early-strength water reducing agent as well as a preparation method and application thereof. The synthesis of the early-strength water reducing agent comprises two steps of polymerization reaction of low-molecular-weight polycarboxylic acid and ring-opening esterification reaction of polyether glycidyl ether. According to the low-molecular-weight polycarboxylic acid, unsaturated carboxylic acids such as acrylic acid, methacrylic acid, maleic acid and itaconic acid are used as raw materials, and the low-molecular-weight polycarboxylic acid with the molecular weight of 1000-5000 is synthesized through water-phase free radical polymerization; and then carrying out ring-opening esterification reaction on the low-molecular-weight polycarboxylic acid and polyether glycidyl ether to synthesize the ester type polycarboxylic acid water reducer with a comb-shaped molecular structure. Compared with the prior art, the early-strength water reducing agent and the preparation method thereof have the performance advantages of simple synthesis process, high esterification rate and good early-strength effect.

The invention discloses a bio-based TPV composite material and a preparation method thereof, and belongs to the technical field of preparation of TPV composite materials, polylactic acid is used as a plastic phase, bio-based itaconate rubber and a bio-based ethylene-vinyl acetate copolymer are used as a rubber phase, maleic anhydride grafted cardanol and an ethylene-acrylic acid copolymer are used as a composite compatibilizer, and the bio-based TPV composite material is prepared. Titanate coupling agent modified core-shell particles are added to serve as a reinforcing agent, dicumyl peroxide is combined with an electron beam radiation initiation mode, and the bio-based PLA / Bio-ItBR / EVA TPV is prepared through a dynamic vulcanization process. The product has medium hardness, medium tensile strength, excellent ductility and high elasticity, and good elastic memory ability and compressive deformation resistance. The compatibility between a plastic phase and a rubber phase is improved, and the phase separation problem caused by polarity difference is reduced. The dicumyl peroxide is combined with a dynamic vulcanization process initiated by electron beam radiation, so that a uniform cross-linked network can be formed, and the stability of the material performance is improved.

The invention provides a tire tread rubber composition with high bio-based content. The composition is prepared from the following raw materials in parts by weight: 10-40 parts of natural rubber; 0 to 30 parts of modified polystyrene-butadiene rubber; 50 to 80 parts of bio-based itaconate rubber; 5 to 20 parts of bio-based carbon black; 50-90 parts of rice hull ash white carbon black; 0-20 parts of biological base oil; 4-8 parts of a bio-based silane coupling agent; 5-30 parts of bio-based wet skid resistant resin; according to the composition, bio-based resources are used as main raw materials, dependence on petroleum resources is reduced, and carbon emission in the production process is reduced; the rubber composition basically does not contain harmful chemical substances, and is safer and more reliable to use.

The invention discloses a preparation method of bio-based diamide bicyclic carbonate and amide type non-isocyanate polyurethane, and belongs to the technical field of polyurethane. The method comprises the following steps: firstly, reacting bio-based dibasic acid or ester with 3-amino-1, 2-propylene glycol to obtain diamidotetrol, and then reacting with carbonic acid diester in the presence of a catalyst and a phase transfer agent to synthesize bio-based diamide bicyclic carbonate; further, dimethyl itaconate and aliphatic diamine are subjected to condensation polymerization to synthesize amino-terminated itaconic acid polyamide, the amino-terminated itaconic acid polyamide reacts with diamide bicyclic carbonate under the conditions of no catalyst and no solvent, and amide type bio-based non-isocyanate polyurethane is synthesized. The method is based on the bio-based dibasic acid, the diamine and the glycerol derivative 3-aminopropanediol which are rich in source and low in price, the preparation process is green and environment-friendly, the operation is simple and convenient, and the prepared amide type non-isocyanate polyurethane is excellent in mechanical property.

The invention relates to a polysaccharide and oligopeptide composition and application thereof in promoting plant growth. The polysaccharide and oligopeptide composition comprises the following components: xanthan gum, algal polysaccharides, a grifola frondosa extract, soybean oligopeptide, wheat oligopeptide, corn oligopeptide, modified silicon dioxide, itaconic acid, indolebutyric acid, glycine, glutamic acid, citric acid and fatty alcohol-polyoxyethylene ether. Wherein the modified silicon dioxide is obtained by reacting silicon dioxide with an acrylate-based silane coupling agent and then reacting with acrylic acid esterified humic acid. According to the plant growth promoter, the modified silicon dioxide is compounded with various substances such as polysaccharide and oligopeptide, the components are good in compatibility, the stability of the product is improved, the action time is prolonged, the absorption efficiency is improved, plant growth can be efficiently promoted, the defects of existing products are overcome, and the plant growth promoter has important significance on development of plant growth promoter products.

The invention relates to the technical field of water treatment agents, and provides a solid slow-release scale inhibitor and a preparation method thereof. The preparation method of the solid slow-release scale inhibitor comprises the following steps: dispersing an aminated MOFs material in a mixed solvent of methanol and water, adding poly (N-isopropylacrylamide) and a cuprous bromide / pentamethyldiethylenetriamine catalytic system, and performing separation and freeze drying after reaction to obtain a temperature-sensitive functionalized MOFs material; dispersing the hyperbranched polyaspartic acid-itaconic acid copolymer in a mixed solvent of methanol and water, adding the temperature-sensitive functionalized MOFs material, reacting, and drying to obtain a polymer-loaded MOFs material; and dissolving zirconium acetate in water, adjusting the pH value to 4.0, adding the polymer-loaded MOFs material, carrying out a reaction, and carrying out centrifugal washing and drying. The solid slow-release scale inhibitor provided by the invention has a stable and effective scale inhibition effect.

The invention relates to the field of bio-based composite materials, and discloses a bioplastic-based coupling agent, a modified bamboo fiber, a composite material and a preparation method and application of the bioplastic-based coupling agent and the modified bamboo fiber. The coupling agent is a product obtained by modifying polyhydroxybutyrate valerate and a grafting monomer, and the grafting monomer is at least one of maleic anhydride, acrylic acid or itaconic anhydride. The delignification bamboo powder is modified with the coupling agent, and the modified bamboo fiber, polyhydroxybutyrate-hydroxyvalerate, an initiator and an auxiliary agent are subjected to melt blending to obtain the composite material. The tensile strength and the bending strength of the composite material are respectively improved by 175% and 117%, and the crystallization ability and the thermal stability are also synchronously improved. According to the invention, the unification of high strength, thermal stability and excellent interfacial compatibility is realized while the degradability of the system is maintained, and the composite material has a good green composite material application prospect.

The invention relates to a carboxyl-terminated polyester-based polyurethane UV viscosity-reducing adhesive and a preparation method thereof, and belongs to the technical field of new materials. The polyurethane UV viscosity-reducing adhesive provided by the invention is used for wafer manufacturing. The preparation method comprises the following steps: dissolving itaconic acid and 1, 4-butanediol in a solvent, and carrying out a heating reaction under the action of a catalyst to prepare a carboxyl-terminated prepolymer; carrying out ring-opening reaction on the carboxyl-terminated prepolymer and glycidyl methacrylate under the action of a catalyst to prepare hydroxyl-terminated polyester; the preparation method comprises the following steps: reacting hydroxyl-terminated polyester with isocyanate, and introducing a chain extender and a photoinitiator to prepare the rapidly-cured UV viscosity-reducing adhesive. The polyurethane UV viscosity-reducing glue is coated on a polyolefin film, the peeling strength at 180 degrees before ultraviolet irradiation after curing is 23.21-30.29 N / 25 mm, and the peeling strength at 180 degrees after ultraviolet irradiation is 0.07-0.19 N / 25 mm. According to the invention, the carboxyl-terminated prepolymer and glycidyl methacrylate are subjected to a ring-opening reaction, the viscosity reducing effect after UV irradiation is significant due to increase of double bonds, the 180-degree peel strength after UV irradiation is reduced, and no adhesive residue and degumming are realized.

The invention relates to the field of copper plating solutions, and provides a low-stress chemical copper plating solution for a glass substrate and a preparation method of the low-stress chemical copper plating solution. The invention discloses a copper ion carboxyl chelate, which is composed of copper ion carboxyl chelate, 2, 2 '-bipyridine, polyethylene glycol-8000, lauryl sodium sulfate, a sodium carbonate buffer agent, deionized water and a pretreatment solvent, and the copper ion carboxyl chelate is prepared by chelating a polyacrylate-itaconic acid copolymer with copper chloride and then carrying out stepwise cross-linking with epichlorohydrin and N, N'-methylene bisacrylamide. The copper-bis-salicylaldehyde ethylenediamine complex is obtained by reacting bis-salicylaldehyde ethylenediamine with copper acetate, crystallizing and purifying. The preparation method comprises the steps of solvent premixing, chelating activation, staged additive integration, pH dynamic regulation and control and plating solution purification, through nitrogen protection, high-shear stirring and accurate pH regulation, the problems that a traditional chemical copper plating layer is high in stress and poor in conductivity are solved, and the method is suitable for high-precision glass substrate surface metallization.

The invention belongs to the technical field of scale inhibitors, and particularly relates to a slow-release scale inhibitor and a preparation method thereof.The preparation method comprises the steps that 3, 4, 5-allyl trihydroxybenzoate, itaconic acid, sodium hydrogen sulfite, methacryloyloxyethyl-n-hexadecyl-dimethyl ammonium bromide and deionized water are mixed, after water bath heating, an ammonium persulfate aqueous solution is slowly added, and the scale inhibitor is obtained after reaction; the preparation method comprises the following steps: dissolving agar in deionized water, adding polyethylene glycol modified sodium alginate and a scale inhibitor into the deionized water, stirring, dropwise adding into edible oil to obtain gel microspheres, adding the gel microspheres into a calcium chloride aqueous solution, slowly stirring, cross-linking, cleaning and drying to obtain the slow-release scale inhibitor. The hydrogel microspheres swell to slowly release the scale inhibitor, meanwhile, the released scale inhibitor is hydrolyzed in water, ester groups are slowly broken, polycarboxylic acid, 3, 4, 5-trihydroxybenzoic acid and hydroxyethyl-n-hexadecyl-dimethyl ammonium bromide are slowly released, and good scale inhibition and corrosion inhibition effects are achieved.

The invention provides a seawater soaking wound hydrogel dressing and a preparation method thereof, a drug-loaded nano system 4OI (at) ZIF-8 (at) PAD with a core-shell structure is constructed, an anti-inflammatory drug 4-octyl itaconic acid and zinc ions are jointly encapsulated in a ZIF-8 framework, and a polydopamine coating is wrapped, so that synergistic loading and controllable release of the drug and metal ions are realized. According to the dressing, dopamine modified hyaluronic acid is used as a matrix, a temperature-sensitive material and an enzyme catalysis cross-linking system are combined, stable gel can be rapidly formed in situ within 5 seconds, and the dressing has excellent tissue adhesion performance (the adhesion strength reaches 6.7 kPa). Experiments prove that the hydrogel dressing has the characteristics of broad-spectrum antibiosis, inflammation regulation and control and long-acting release. Animal experiments prove that the healing rate of seawater soaking wounds treated by the dressing on the twelfth day is as high as 95.7% and is remarkably superior to that of a commercial silver ion gel control group, scars are less after healing, and an efficient, safe and easy-to-implement scheme is provided for marine environment wound nursing.

The invention provides an inorganic composite high-strength oil-water well water shutoff material and a preparation method thereof, and belongs to the technical field of oilfield chemical agents. The material is prepared from the following raw materials in percentage by weight: 15%-20% of a high-activity mineral admixture, 2%-8% of high-performance silicate, 3%-5% of an agriculture and forestry biomass material with the particle size of 1-10 microns, 5%-8% of a suspending agent, 0.5%-0.7% of a dispersing agent, 0.04%-0.05% of a retarder, 1%-2% of a reinforcing agent, itaconic acid modified acrylate, a pH regulator and the balance of water. The preparation method comprises a step-by-step mixing and stirring process. According to the invention, 3-5% of waste agricultural and forestry biomass is utilized, through the synergistic effect of all the components, the prepared water plugging material has the advantages of high compressive strength (1.79 MPa), controllable curing time (24-48 hours), good slurry stability, high temperature resistance (greater than or equal to 140 DEG C) and the like, unification of waste recycling and high-performance water plugging materials is realized, and the water plugging material is especially suitable for water plugging operation of high-temperature fractured reservoirs.

The invention relates to the field of dry strength agents, and discloses a nano-cellulose modified novel reinforced dry strength agent, which is prepared from the following raw materials in parts by weight: 10 to 20 parts of nano-cellulose, 30 to 50 parts of acrylamide, 10 to 20 parts of methacryloyloxyethyl trimethyl ammonium chloride, 5 to 15 parts of dimethylaminoethyl methacrylate, 3 to 8 parts of itaconic acid, 3 to 8 parts of sodium methallyl sulfonate, 3 to 8 parts of N, N-dimethylformamide, 3 to 8 parts of sodium dodecyl benzene sulfonate, 3 to 8 parts of sodium dodecyl benzene sulfonate, 3 to 8 parts of sodium dodecyl benzene sulfonate, 3 to 8 parts of sodium dodecyl benzene sulfonate, 3 to 8 parts of sodium dodecyl benzene sulfonate and 5 to 10 parts of sodium dodecyl benzene sulfonate. 5 to 15 parts of N, N-dimethylacrylamide, and 5 to 15 parts of 2-acrylamido-2-methylpropanesulfonic acid. Nano cellulose is used as a core reinforcing component, by means of the nanoscale size and high reaction activity, a surface group and fibers form a hydrogen bond and are chemically bonded with a polymeric monomer, a three-dimensional network structure is constructed among the fibers, and electrostatic adsorption of a cationic monomer and the crosslinking effect of a polar group are cooperated, so that the binding force among the fibers of the paper is improved; and the tensile property is obviously enhanced.

The invention discloses a water treatment filtering material and a preparation method thereof, and relates to the technical field of filtering materials. When the water treatment filtering material is prepared, firstly, acrylonitrile, itaconic acid and ethylene 2-(methacryloyloxy) ethyl phosphate are copolymerized to prepare copolymerized modified polyacrylonitrile; the preparation method comprises the following steps: carrying out hydrothermal reaction on a copper source and tetrabutyl titanate, and calcining to obtain copper-doped nano titanium dioxide; the copper-doped nano titanium dioxide and KH-550 are subjected to a reaction, and modified nano titanium dioxide is prepared; carrying out electrostatic spinning on the copolymerized modified polyacrylonitrile, and carrying out nano-spray loading on the modified nano titanium dioxide to prepare a modified polyacrylonitrile fiber membrane; and reacting the modified polyacrylonitrile fiber membrane in a covalent organic framework growth solution to prepare the water treatment filtering material. The prepared water treatment filtering material has the advantages of being antibacterial, anti-pollution, high in filtering efficiency and long in service life.