492 results about "Ammonium persulfate" patented technology

The invention relates to the technical field of oilfield chemistry, and discloses a graft modified cellulose filtrate reducer and a preparation method thereof.The preparation method comprises the following steps that modified hydroxyethyl cellulose, 2-acrylamide-2-methyl propane sulfonic acid, dimethyl diallyl ammonium chloride, alkenylated cardanol and N, N '-methylene bisacrylamide are added into deionized water, stirring is conducted, and a mixture is obtained; the preparation method comprises the following steps: adding cellulose into a reaction kettle, stirring for 10-15 minutes at the temperature of 40-60 DEG C at the speed of 300-400 rpm, dropwise adding ammonium persulfate and sodium hydrogen sulfite into a system, and continuously reacting for 4-6 hours to obtain the grafted modified cellulose filtrate reducer. The filtrate reducer disclosed by the invention has good high temperature resistance and salt resistance.

The invention relates to the technical field of functional polymer composite materials, and provides diatomite modified composite super absorbent and rapid absorbent resin and a preparation method thereof. The preparation raw materials of the diatomite modified composite high-water-absorption and rapid-water-absorption resin provided by the invention comprise acrylic acid, acrylamide, sodium hydroxide, N, N '-methylene bisacrylamide, ammonium persulfate and modified diatomite. The diatomite is modified by the silane coupling agent, the agglomeration problem of the diatomite is solved, the compatibility with organic monomers is improved, and the modified diatomite, acrylic acid and acrylamide are utilized to construct an organic-inorganic synergistic three-dimensional porous network structure, so that the resin has ultrahigh water absorption rate, rapid water absorption performance and good water retention stability. Meanwhile, the preparation method disclosed by the invention does not need nitrogen protection, has the advantages of simple process, controllable raw material cost and easiness in industrial mass production, and is suitable for multiple fields such as water-saving agriculture, soil moisturizing, landscaping and the like.

The invention relates to the technical field of polymer photoelectric materials, in particular to a preparation method of a supramolecular gel electrolyte. The method comprises the following steps: esterifying tetraphenylethylene alcohol and methacryloyl chloride to form tetraphenylethylene methacrylate, and performing staged linear heating polymerization on the tetraphenylethylene methacrylate, 3-(methacrylamido) propyl dimethyl 3-thiopropyl ammonium oxide inner salt, acrylic acid, tetraphenylethylene methacrylate and 4-vinylpyridine under the action of ammonium persulfate to obtain a tetraphenylethylene copolymer. And finally, soaking in a lithium chloride aqueous solution to obtain the supramolecular hydrogel electrolyte. The hydrogel obtained by the invention has high mechanical strength and high ionic conductivity, and is suitable for energy storage devices such as flexible supercapacitors and the like.

The invention belongs to the technical field of solar-driven interface evaporation, and particularly relates to a solar-driven interface evaporation aerogel material based on gradient modification and a preparation method and application thereof. The preparation method specifically comprises the following steps: performing cross-linking reaction on chitosan and a cross-linking agent in an organic acid aqueous solution, and performing freeze drying to obtain a chitosan matrix with a three-dimensional network structure; a pyrrole monomer is uniformly dispersed in a network structure of a chitosan matrix, then the chitosan matrix is immersed in an ammonium persulfate solution, and by controlling the oxidative polymerization degree of ammonium persulfate to the pyrrole monomer, concentration gradient distribution gradually decreasing from the surface to the inside of polypyrrole is formed in the chitosan matrix, so that the polypyrrole / chitosan composite material is obtained. The solar-driven interface evaporation aerogel material based on gradient modification is obtained. The aerogel material provided by the invention combines a photothermal effect with interface evaporation, and achieves the purpose of reasonably and efficiently utilizing solar energy resources to carry out seawater desalination.

The invention relates to an ultrasonic vibration assisted large-width copper plate strip continuous extrusion short-process technology, and belongs to the technical field of metal processing. A copper raw material is subjected to mechanical cleaning and then ultrasonic cleaning, and the surface cleanliness of the raw material is guaranteed; the cleaned copper raw materials are fed into continuous extrusion equipment, and ultrasonic vibration is adopted for assisting continuous extrusion; after the extruded copper plate strip is cooled, spraying a suspension containing cerium (IV)-sodium dodecyl benzene sulfonate-pyrrolidone nano aluminum oxide additive on the surface of the copper plate strip, and drying; straightening by using a multi-roll straightening machine to obtain a large-width copper plate strip; the cerium (IV)-sodium dodecyl benzene sulfonate-pyrrolidone nanometer aluminum oxide auxiliary agent is prepared from nanometer aluminum oxide, DMF (Dimethyl Formamide), sodium dodecyl benzene sulfonate, N-vinyl pyrrolidone, ammonium persulfate and cerous sulfate (IV); the copper plate strip prepared by the invention has relatively high density, relatively high tensile strength and ductility, and the mechanical property of the copper plate strip is remarkably improved.

The invention discloses a low-shrinkage acrylate gel material and a preparation method thereof. The gel material is prepared by mixing a solution A and a solution B according to an equal proportion, the liquid A comprises acrylate, a cross-linking agent, an accelerant and a retarder; the acrylate is a calcium acrylate solution, a magnesium acrylate solution or a mixed solution of calcium acrylate and magnesium acrylate; the concentration of the acrylate in the solution A is 15wt.%-35wt.%; the liquid A is also added with a modified material, and the modified material is selected from at least one of hydroxyethyl ester, chloroprene rubber, polyurethane, polyvinyl alcohol and epoxy resin; the addition amount of the modified material is 1%-5% of the total mass of the solution A; the solution B comprises an initiator and distilled water; the initiator is selected from at least one of ammonium persulfate, hydrogen peroxide and azodiisobutyronitrile; the use amount of distilled water in the solution B is determined according to initiator concentration; by optimizing an acrylate compound system, introducing an anti-shrinkage functional component and accurately controlling a preparation process, the comprehensive improvement of material performance and engineering applicability is finally realized.

The invention discloses a formaldehyde-free composite board for a cabinet and a preparation method of the formaldehyde-free composite board, and relates to the technical field of artificial board manufacturing. The preparation method of the formaldehyde-free composite board for the cabinet comprises the following steps: mixing high amylose with a choline chloride / urea deep eutectic solution, stirring, adding concentrated hydrochloric acid for reaction, adjusting the pH value, and adding ammonium persulfate to obtain pretreated oxidized starch; methacrylic acid dehydrated glyceride is added into the pretreated oxidized starch for a grafting reaction, then modified polyvinyl alcohol is added for blending, sodium metaphosphate is added for crosslinking, finally, heating and curing are conducted, modified titanium dioxide nanoparticles are added, and the formaldehyde-free starch adhesive is obtained. The wood shavings and the formaldehyde-free starch adhesive are mixed, and a core material is obtained; and arranging the core material between the formaldehyde-free veneers, and carrying out hot press molding to obtain the formaldehyde-free composite board. The formaldehyde-free composite board for the cabinet has excellent mechanical strength, bonding performance and water resistance.

The invention discloses a functional and recoverable vegetable protein adhesive with high strength and toughness and a preparation method of the functional and recoverable vegetable protein adhesive. The adhesive is prepared from the following components in parts by mass: 30 parts of soybean protein, 4 to 7.5 parts of acrylamide, 0.5 to 4 parts of methacryloyloxyethyl trimethyl ammonium chloride, 1 to 3 parts of a peptide self-assembly cross-linking agent, 1.6 parts of ammonium persulfate, 5 parts of a metal-polyphenol catalyst and 65 parts of a dispersion medium. The preparation method comprises the following steps: weighing the components in proportion, dispersing the acrylamide, the methacryloyloxyethyl trimethyl ammonium chloride, the peptide self-assembly cross-linking agent and the ammonium persulfate in a medium, uniformly stirring, adding the soybean protein, finally adding the metal-polyphenol catalyst, and uniformly dispersing. The self-assembled amphiphilic peptide fiber is introduced as a dynamic cross-linking agent, and a multi-stage energy dissipation structure is constructed in the adhesive, so that the mechanical strength, the toughness and the function customizability of the adhesive are remarkably improved, and meanwhile, room-temperature polymerizability, recoverability and reprocessing are realized.

The invention relates to the technical field of polymer composite materials, and provides a composite water-retaining agent based on charcoal and bentonite as well as a preparation method and application of the composite water-retaining agent. The composite water-retaining agent provided by the invention is prepared from the following raw materials: acrylic acid, 2-acrylamido-2-methyl-1-propanesulfonic acid, acrylamide, sodium hydroxide, N, N '-methylene bisacrylamide, ammonium persulfate, modified bentonite and corn straw biochar. The composite water-retaining agent provided by the invention has excellent salt resistance, water holding capacity and structural stability, and the water absorbency in pure water and a 0.9% NaCl solution respectively reaches 2547.30 g / g and 164.45 g / g; when the soil conditioner is applied to saline-alkali soil, the maximum water holding capacity of the soil can be remarkably improved. The preparation process is simple, the cost is low, and the method has important practical significance on promoting ecological environment restoration of the arid mining area and realizing coordinated development of mineral resource development and environmental protection.

The invention discloses a preparation method of a flexible electronic device with specific wet adhesion capability, which comprises the following steps: dissolving acrylamide Am, methacrylic acid esterified gelatin GelMA and chitosan powder in an acetic acid solution, uniformly stirring, adding carboxylated multi-walled carbon nanotubes (MWCNTs) into the mixed solution, stirring uniformly, and drying to obtain the flexible electronic device with specific wet adhesion capability. Performing ultrasonic treatment, water bath treatment and degassing treatment to obtain a precursor solution; the preparation method comprises the following steps: mixing sodium monohydrogen phosphate and sodium dihydrogen phosphate, adding sodium bicarbonate, adding ammonium persulfate as an initiator, fully stirring, and degassing to obtain a gelling solution for inducing physical crosslinking of chitosan; selecting a material with carboxyl, amino and hydroxyl groups to manufacture a mold for polymer cross-linking molding; and mixing and stirring the precursor solution and the gelling solution, injecting into a prepared mold, placing at room temperature, and integrally forming to manufacture the flexible electronic device. The invention further discloses application of the flexible electronic device in preparation of a bioelectric sensor sensitive element and tissue repair.

The invention provides a special fiber material and a preparation method thereof, and belongs to the technical field of polymer composites.The preparation method comprises the following steps that cellulose and an ethanol solution are mixed, polyvinyl alcohol and a 3-glycidoxypropyltrimethoxysilane solution are added, the pH is adjusted to be acidic, heating, suction filtration and drying are conducted, and modified cellulose is obtained; mixing expanded graphite, deionized water, ammonium persulfate and dilute sulphuric acid, heating, cooling, dropwise adding amino polyethylene glycol silane, heating, washing and drying to obtain modified expanded graphite; the preparation method comprises the following steps: mixing modified cellulose, modified expanded graphite, phosphate montmorillonite, 3-(methacryloyloxy) propyltrimethoxysilane, bisphenol A diglycidyl ether and 2-methylimidazole, stirring, heating, defoaming, and carrying out two-stage constant-temperature treatment to obtain the special fiber material. The special fiber material disclosed by the invention has good flame retardance, mechanical strength, water resistance and filtering performance, and can be applied to various organic composite boards, filter membranes and the like with high quality requirements.

The invention discloses zwitterionic concrete internal curing hydrogel based on humidity-pH dual responsiveness and a preparation method of the zwitterionic concrete internal curing hydrogel, and belongs to the technical field of building materials. The water-based cleaning agent is prepared from the following raw material components in percentage by weight: 6%-8% of N-vinyl imidazole, 8%-12% of 2-methylimidazole, 6%-8% of 2-acrylamido-2-methylpropanesulfonic acid, 2%-4% of sodium p-styrenesulfonate, 26%-30% of acrylic acid, 18%-21% of N-vinyl pyrrolidone, 15%-18% of glycidyl methacrylate, 2%-5% of nano montmorillonite powder, 0.05%-0.1% of divinyl benzene, 0.05%-0.15% of N, N-dimethylformamide and the balance of water. The invention discloses an anti-freezing agent which is prepared from the following components in percentage by weight: 0.1%-0.3% of N, N-methylene bisacrylamide, 0.1%-0.3% of 1-[4-(2-hydroxyethoxy)-phenyl]-2-hydroxy-2-methyl-1-propane-1-ketone, 0.5%-0.8% of ammonium persulfate and 0.5%-0.8% of sodium hydrogen sulfite. Double response to the internal humidity and pH value of the concrete can be achieved, and the requirement for precise internal curing of modern high-performance concrete is met.

The invention provides a diesel oil anti-wear agent and a preparation process thereof, and belongs to the technical field of diesel oil additives, and the preparation process comprises the following steps: mixing and stirring diisooctyl maleate and xylene, adding diethylenetriamine and deionized water, carrying out heating reaction, adding toluene, 4-(aminomethyl) pyridine and ethylene oxide, carrying out mixing reaction, filtering, washing, and drying to obtain the diesel oil anti-wear agent. The pyridinium-based polyester hollow capsule is prepared; the preparation method comprises the following steps: mixing xylene, catechol, ethylene phosphonic acid, ammonium persulfate and deionized water, heating, dispersing in cyclohexane, adding polyvinyl alcohol, octadecyl methacrylate and azodiisobutyronitrile, mixing and reacting to obtain catechol phosphonate nano colloidal particles; mixing and stirring the fatty acid ester solution, the oleoyl fluorocarbon copolymer and the pyridinium-based polyester hollow capsule, adding the catechol phosphonate nano colloidal particles, continuously stirring, performing ultrasonic treatment, and degassing to obtain the diesel oil anti-wear agent. The diesel oil antiwear agent can improve the antiwear property and demulsibility of the diesel oil antiwear agent.

The invention provides a silicon wafer polishing solution, a silicon wafer polishing method thereof, a silicon wafer and a solar cell. The silicon wafer polishing solution comprises first inorganic particles, second inorganic particles, ammonium persulfate, sophorolipid and a solvent, the particle size of the first inorganic particles is smaller than that of the second inorganic particles, and the silicon wafer polishing solution is alkaline. Therefore, the silicon wafer can be polished in a mode of simultaneously carrying out chemical etching and mechanical grinding on the silicon wafer, the concave-convex height difference of line marks on the surface of the silicon wafer can be effectively reduced, even no obvious line marks penetrating through the silicon wafer exist, and then the surface flatness of the silicon wafer is improved; when a silicon wafer polished by the polishing solution is used for a perovskite / crystalline silicon laminated cell, the deposition quality of a thin film in the perovskite top cell can be effectively improved, and the overall efficiency of the cell is further improved.

The invention relates to a preparation method of a bio-based mesoporous carbon material, and belongs to the technical field of carbon material preparation. The invention provides a preparation method of a bio-based mesoporous carbon material, and the bio-based mesoporous carbon material is prepared by taking agricultural and forestry wastes as raw materials through three steps of pretreatment, phosphoric acid activation and polyaniline-graphene quantum dot compounding. In the pretreatment stage, the raw materials are crushed, soaked in an ethanol-acetone mixed solution at 40-80 DEG C for 2-6 h and dried, and powder B is obtained; in the phosphoric acid activation stage, a 50-80% phosphoric acid solution is used for dipping for 12-48 hours according to the mass ratio of 1: (2-5), and carbonization is performed under the protection of 400-700 DEG C nitrogen to obtain a solid product In the compounding stage, D is dispersed in a 0.1-1 mol / L aniline hydrochloric acid solution, after polymerization is initiated by ammonium persulfate, 0.01-0.1 g / L graphene quantum dot solution is added for compounding, and after centrifugal drying, the high-performance carbon material with the specific surface area larger than or equal to 1800 m < 2 > / g, the proportion of 2-5 nm holes larger than 35% and the mesoporous rate larger than 75% is prepared, and the high-performance carbon material is suitable for the field of supercapacitors.

The present disclosure provides a preparation method of a porous hydrogel adsorbent based on Radix astragali residues, including the following steps: subjecting residues of Chinese herbal medicine Radix astragali as a precursor to bleaching with NaClO2, alkaline washing with KOH, and high power ultrasonic treatment, thereby obtaining a precursor solution of uniformly dispersed cellulose nanofibers (CNFs); adding the precursor solution of CNFs to a mixed solution of N,N′-methylene bisacrylamide (MBA), acrylic acid (AA) and ammonium persulfate (APS), shaking evenly, and initiating a polymerization reaction at a predetermined temperature to form a monolithic gel; and cleaning the monolithic gel, putting the cleaned monolithic gel into a dimethyl sulfoxide (DMSO) solution containing epichlorohydrin to allow reaction, and transferring the product of the reaction to an aqueous sodium hydroxide solution containing triethylene tetramine to allow reaction, thereby finally obtaining an amino-functionalized porous hydrogel adsorbent.

The invention belongs to the technical field of underground engineering grouting materials, and discloses an anti-dispersion solid waste grouting filling material and a preparation method and application thereof. The slurry A is prepared from the following components in parts by mass: 400 to 1000 parts of fly ash, 500 to 1000 parts of blast furnace slag, 100 to 500 parts of Portland cement, 250 to 1200 parts of water, 5 to 50 parts of sodium hydroxide and 10 to 50 parts of PolyFure-I; the polyFure-I comprises acrylamide and N, N, N ', N'-tetramethylethylenediamine, and the polyFure-I comprises acrylamide and N, N, N ', N'-tetramethylethylenediamine; the slurry B is prepared from the following components in parts by mass: water glass and PolyFure-II; the PolyFure-II is prepared from water glass, an ammonium persulfate solution, xanthan gum and carboxymethyl cellulose. The flowing water dispersion resistance of the grouting material is effectively improved, the blocking effect of flowing water is enhanced, and the problem of insufficient blocking of a traditional grouting material is solved.

The invention discloses a 96-hole preassembled plate fat-soluble vitamin pretreatment kit, and belongs to the technical field of in-vitro diagnostic reagents. Comprising magnetic bead suspension liquid, equilibrium liquid, leacheate 1, leacheate 2 and eluent which are carried on a preassembled plate, and the magnetic bead suspension liquid comprises absolute ethyl alcohol and magnetic beads; the preparation process of the magnetic beads comprises the following steps: activating carboxyl of the carboxyl magnetic beads through EDC and NHS; then nitrochlorobenzene and triethylamine are added for a coupling reaction; mixing the coupling reaction product with pyrrolidone, ammonium persulfate and a pore-foaming agent to obtain target magnetic beads; the magnetic beads can be specifically combined with fat-soluble vitamins in human serum or plasma, efficient separation and release of an object to be detected are achieved through a magnetic separation technology, and the magnetic beads are suitable for follow-up mass spectrum quantitative analysis. The kit disclosed by the invention has the characteristics of simplicity and convenience in operation, high extraction efficiency and good stability, the pretreatment time can be remarkably shortened, the detection accuracy is improved, and an efficient solution is provided for clinical detection of fat-soluble vitamins.

The application belongs to the technical field of self-repairing materials, and particularly relates to a kind of double-microcapsule self-repairing water-based polyurethane material and its preparation method. It comprises: ultrasonic dispersion of cellulose nanocrystals in deionized water to form an aqueous phase, adding dry oil and sodium dodecyl sulfate, and stirring to obtain a dry oil microcapsule with a Pickering emulsion as a template. Then, polyvinylpyrrolidone aqueous solution, non-polar solvent solution of thiophene monomer and ammonium persulfate aqueous solution are prepared. The first two are mixed and ultrasonically dispersed, then mixed with the ammonium persulfate aqueous solution and stirred to polymerize. After the reaction is completed, polythiophene microcapsule suspension is obtained. After centrifugation, the supernatant is colorless. The solid is washed and dried to obtain polythiophene microcapsules. Finally, the two kinds of microcapsules are added to the water-based polyurethane, mixed uniformly, dried at room temperature to form a double-microcapsule self-repairing water-based polyurethane material. The application realizes the self-repairing and mechanical property improvement of the double-microcapsule self-repairing water-based polyurethane material under room temperature natural light.

The invention relates to Al2O3 / C powder as well as a preparation method and application thereof, and belongs to the field of ceramic powder preparation. The invention relates to a preparation method of Al2O3 / C powder, which comprises the following steps: by taking aluminum acetate as a raw material, acrylamide as an organic monomer, N, N '-methylenebisacrylamide as a cross-linking agent and ammonium persulfate as an initiator, forming polymer gel with a three-dimensional network structure through a sol-gel method, and drying to obtain dry gel powder; and pyrolyzing the dry gel powder in nitrogen to obtain Al2O3 / C powder with a porous structure characteristic. According to the invention, acrylamide is utilized to form gel with a three-dimensional network structure, Al < 3 + > is trapped in pores of the gel structure, so that an aluminum source and a carbon source are uniformly distributed on a molecular level, and growth of Al2O3 particles is effectively inhibited by utilizing an isolation effect of C and combining a rapid heating process, so that the diffusion distance of a substance for forming AlN is greatly shortened, and the preparation process is simplified. According to the method, rapid formation of AlN is promoted, the reaction time is effectively shortened, the efficiency is improved, and the obtained pure-phase AlN powder is small in particle size.

The application discloses a kind of polymer oil displacement agent for carbonate fractured-vug type reservoir and preparation method thereof, step 1, with acetone and ethanol mixed solution as solvent, N, N-dimethylpropylene diamine, diethyl ether and perfluorinated nonanoic acid are added into acetone-ethanol mixed solution, after complete reaction, chloropropene is added, continue to react, after reaction is finished, solvent is removed by evaporation, to obtain fluorocarbon cation hydrophobic monomer CF-1;Step 2, white oil, emulsifier Span80 and Tween80 with mass ratio of 35-45:1-3:1-2 are mixed uniformly to obtain oil phase;AM, sodium p-styrenesulfonate and fluorocarbon cation hydrophobic monomer CF-1 are dissolved in deionized water, sodium bisulfite is added, and stirred uniformly to obtain aqueous solution;The aqueous solution is added to the oil phase to obtain a uniform emulsion, ammonium persulfate is added, and the polymer oil displacement agent is obtained by reaction. It has higher temperature resistance and salt resistance, and greatly reduces the adsorption of carbonate reservoir on the oil displacement agent.

The invention relates to the technical field of concrete admixtures, and particularly discloses a concrete super-plasticity-retaining retarder and a preparation method thereof. The concrete super-plasticity-retaining retarder is prepared from 100 to 200 parts of carboxyl / phosphonic acid group-containing unsaturated polyether monomer, 50 to 150 parts of phosphonic acid group-containing unsaturated monomer, 20 to 80 parts of acrylic acid, 1 to 5 parts of ammonium persulfate, 1 to 5 parts of ascorbic acid, 5 to 15 parts of chain transfer agent, 5 to 15 parts of nonionic polyurethane thickener, 1 to 2 parts of preservative and 600 to 800 parts of deionized water. According to the invention, the retarding effect and the stability when the retarder is used together with different types of water reducing agents can be improved.

The invention discloses a preparation method of an SO2 exchange adsorption material and a desulfurization adsorption tower applying the SO2 exchange adsorption material. The preparation method comprises the following steps: adding hollow fibers into 1.5-2M hydrochloric acid solution in an ice bath, and filling the hydrochloric acid solution into hollow fiber inner tubes; the preparation method comprises the following steps: mixing aniline and a filler in a mass ratio of (10: 1)-(20: 1), adding the mixture into a 1-1.2 M organic acid solution, uniformly mixing, and adding the mixture into an acid solution; slowly dropwise adding a mixed solution of ammonium persulfate and organic acid, stirring at 0-5 DEG C for 2-4 hours, adding excessive ammonia water, stirring, cleaning with deionized water to be neutral, and drying to obtain the exchange adsorption material. The hollow fiber material is polyvinylidene fluoride, polytetrafluoroethylene or polypropylene, and the outer diameter of the hollow fiber material is 0.6-1.2 mm. The main body of the prepared exchange adsorption material is a hollow fiber of which the outer wall is coated with polyaniline. The desulfurization adsorption tower comprises an adsorption exchange desulfurization layer above the filler layer, and switching between a desulfurization adsorption area and an elution exchange area is realized by adopting a rotating assembly. The problems that a traditional desulfurization material is low in efficiency and easy to saturate are solved, and the SO2 removal effect is improved.

This invention discloses an acetic acid-modified inorganic composite gel material and its preparation method, belonging to the field of organic material synthesis technology. The acetic acid-modified inorganic composite gel material comprises the following materials in parts by weight: 0.2-0.4 parts of acetic acid-Co3O4, 1.5-2.5 parts of acrylamide, 1-1.5 parts of glycerol, 0.05-0.1 parts of N-N-dimethylformamide, 0.25-0.5 parts of ammonium persulfate, 0.1-0.15 parts of sulfonated-Bi2O3, 0.6-0.9 parts of ethylenediamine, and 0.2-0.4 parts of PVP; the acetic acid-Co3O4 comprises materials in the following mass ratio: acetic acid:cobalt nitrate:thiourea:ammonium fluoride:sodium bicarbonate = 3-7:1.5-2.5:0.8-1.2:0.5-1:6; the sulfonated-Bi2O3 comprises materials in the following mass ratio: Bi2O3:sodium sulfite:H2O2:ammonium bicarbonate = 3-5:0.2-0.6:1-1.5:1. This material achieves efficient and stable catalysis for nitrogen reduction under mild conditions through structural defect regulation, interfacial functional group modification, heterojunction electronic regulation, and synergistic enhancement with organic gel.

The invention discloses a preparation process and application of modified polymer-based oil polish, and the preparation process comprises the following steps: adding deionized water into a reactor, adding an emulsifier and modified silicon dioxide, adding part of methyl methacrylate, ethyl acrylate, butyl acrylate and acrylic acid, and uniformly stirring; adding an ammonium persulfate aqueous solution for reaction, dropwise adding the residual parts by mass of methyl methacrylate, ethyl acrylate, butyl acrylate and acrylic acid, heating for reaction after the dropwise addition of the monomer is completed, cooling to room temperature after the reaction is completed, and filtering to obtain a modified acrylate emulsion; uniformly mixing the modified acrylate emulsion, a flatting agent, a wetting agent, a coalescing agent, a defoaming agent and deionized water, and filtering to obtain the modified polymer-based oil polish. The oil polish disclosed by the invention has excellent leveling property, high glossiness and good wear resistance.

The application discloses a layered silicate gangue inhibitor for fine-grained copper ore flotation and a preparation method thereof. The inhibitor is composed of the following components: modified polysaccharide organic polymer 15-30%, sodium hexametaphosphate 10-30%, acrylic acid 7-15%, acrylamide 1-5%, ammonium persulfate 2-5%, hydroxyethylidene diphosphonic acid 5-15%, aluminum sulfate 2-5%, and deionized water in a residual amount. The preparation method comprises the following steps: mixing modified polysaccharide and deionized water according to a mass ratio of 1:1-1:2 to prepare solution A; polymerizing acrylic acid and acrylamide to prepare solution B; mixing solution A and solution B, and adding a formula amount of sodium hexametaphosphate to react; then adding a formula amount of hydroxyethylidene diphosphonic acid and a formula amount of aluminum sulfate to carry out complex adjustment; and finally, aging, filtering and obtaining the product. The inhibitor has a strong selective inhibiting effect on talc, phlogopite and other layered silicate gangues, can significantly improve the copper concentrate grade and recovery rate, has a small dosage, is non-toxic and environment-friendly, and can be biodegraded.

The present application relates to the technical field of micro-nano functional materials, and particularly relates to a high-efficiency light-heat conversion and wear-resistant super-hydrophobic coating, a preparation method thereof and an application thereof in ice prevention and removal, the preparation method adopts ammonium persulfate as an oxidant to initiate polymerization of pyrrole on the surface of halloysite nanotubes to generate polypyrrole, so as to obtain a halloysite nanotube composite material wrapped by polypyrrole. The super-hydrophobic coating is obtained by mixing the composite material with low-surface-energy polydimethylsiloxane, and the coating layer formed by the super-hydrophobic coating has the characteristics of high roughness and low surface energy, and thus has excellent hydrophobic performance. The coating layer also has good light-heat effect, flexibility, elasticity, mechanical performance, high-temperature resistance and durability. In addition, by adding hydrophobic nano-SiO2, the super-hydrophobic performance of the coating layer is further improved, and the hardness and wear resistance of the coating layer are also enhanced. Finally, the coating layer has excellent light absorption capacity and light-heat conversion efficiency, and realizes the performance of efficient protection and ice layer removal in the application of ice prevention and removal.

The invention belongs to the technical field of preparation of high polymer materials, and provides a lithium ion sieve HMO (at) PPSH hydrogel with SDS micelle mediated swelling enhanced adsorption, and a preparation method and application of the lithium ion sieve HMO (at) PPSH hydrogel. The preparation method comprises the following steps: mixing MnCO3 and Li2CO3 according to a molar ratio of Li / Mn of 1.33: 1.67, and carrying out heat treatment in air at 500 DEG C for 4 hours to obtain a precursor LMO; the preparation method comprises the following steps: preparing a PVA solution and an SDS solution, mixing the PVA solution, the SDS solution, AM, MBA and LMO, and obtaining a solution A after bubbles disappear; adding an ammonium persulfate solution into the solution A, and reacting at 60 DEG C for 6-8 hours to obtain LMO-coated PPSH; and soaking the LMO-coated PPSH in an HCl solution, and washing with deionized water to obtain the HMO-coated PPSH composite material. And the adsorption content of 30% HMO coated PPSH is up to 52.79 mg / g. And the extraction efficiency of Li < + > in natural seawater is up to 98.12%, and the adsorbent still has high adsorption capacity under 10 times of adsorption-desorption circulation.

The application provides a preparation method of a polyaniline-coated silicon-based composite material, and is characterized in that the method comprises the following steps: providing a mixed solution of a silicon-based material, an aniline monomer and an aqueous inorganic acid solution; adding an ammonium persulfate solution dropwise under stirring to perform an in-situ polymerization reaction; performing a filtration treatment after the reaction is completed; collecting polyaniline-coated silicon-based material powder; washing the polyaniline-coated silicon-based material powder to neutrality with deionized water to obtain polyaniline-coated silicon-based material; dispersing the neutral polyaniline-coated silicon-based material in an aqueous ammonia solution, stirring, filtering and washing to neutrality with deionized water to obtain intrinsic polyaniline-coated silicon-based material.

The invention discloses portable AL-AgNPs hydrogel and application thereof in visual detection of carbaryl, and relates to the technical field of food safety detection. Lignin and AgNO3 serve as raw materials, under the action of acrylic acid and ammonium persulfate, AL-AgNPs hydrogel is prepared and mixed with TMB, H2O2 and an HAC-NaAC buffer solution to react, the AL-AgNPs hydrogel is taken out and then soaked in a carbaryl standard solution to be incubated, the AL-AgNPs hydrogel is taken out after incubation, an image of the taken-out AL-AgNPs hydrogel is shot through a mobile phone, RGB analysis is carried out, a B / G value is obtained, and the value of the B / G value is obtained. And establishing a quantitative relationship between B / G and carbaryl concentration, and calculating to obtain the carbaryl concentration in the to-be-detected object. The lowest detection limit of carbaryl detected by the method is 0.1 mu mol / L, which is lower than the maximum residual limit of carbaryl in vegetables in the national food safety standard.