1423 results about "Ammonium persulfate" patented technology

The invention relates to the technical field, and particularly discloses a nano-modified epoxy building thermal insulation material and a preparation method thereof. The nano modified epoxy building thermal insulation material is prepared from the following raw materials in parts by mass: 80 to 120 parts of Portland cement, 20 to 40 parts of slag powder, 5 to 10 parts of hollow mesoporous silicon dioxide, 0.1 to 1 part of pyrrole, 0.1 to 0.2 part of ammonium persulfate, 5 to 10 parts of nano silicon dioxide, 10 to 15 parts of bisphenol S epoxy resin, 1 to 5 parts of acrylic acid, 1 to 2 parts of polylysine, 0.01 to 0.1 part of catalyst and 1 to 2 parts of curing agent. The concrete is prepared from the following raw materials in parts by weight: 20-30 parts of epoxy resin, 4-8 parts of loaded aerogel, 0.1-1 part of polycarboxylate superplasticizer, 1-4 parts of composite fiber and 0.2-1.25 parts of hydrogen peroxide. The fireproof building material has excellent toughness, can better resist cracking and absorb energy, effectively avoids cracking and damage under the action of thermal stress, and ensures that the building material has a fireproof effect.

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 provides a polyaniline / modified graphene oxide composite material and a preparation method thereof. The preparation method comprises the following steps: dispersing purified graphene oxide, performing ultrasonic treatment, heating, adding a modifier for modification, centrifuging, taking precipitate, freezing, drying and grinding to obtain modified graphene oxide powder; mixing the powder with an aniline solution in doped acid to form a modified graphene oxide / aniline acid solution; dissolving ammonium persulfate in the doped acid to prepare an ammonium persulfate acid solution; and slowly dropwise adding the solution into the solution, carrying out in-situ polymerization, and carrying out suction filtration, washing and drying to obtain the composite material. According to the method, through chemical modification and in-situ polymerization processes, the problems that a single filler is poor in dispersity, a conductive network is discontinuous, and anti-corrosion and anti-static performance is difficult to synergistically improve are solved, and the process is simple and convenient and suitable for industrialization.

The invention discloses a multifunctional water-retaining agent adapted to acid soil and a preparation method thereof, and the multifunctional water-retaining agent is prepared from the following raw materials in parts by weight: 9-11 parts of a chitosan solution with the concentration of 0.019-0.021 g / mL, 9-11 parts of a sodium polyphosphate solution with the mass concentration of 0.5-1%, 24-25 parts of an acrylic acid solution with the neutralization degree of 80-85%, 9-11 parts of a guar gum solution with the concentration of 0.019-0.021 g / mL and the balance of water. The mass of the methylene bisacrylamide accounts for 0.01-0.03% of the total dry matter mass of the chitosan, the guar gum and the acrylic acid, the mass of the ammonium persulfate accounts for 0.25-0.35% of the total dry matter mass of the chitosan, the guar gum and the acrylic acid, and the clay mineral accounts for 10-12 parts; the preparation method comprises the following steps: S1, pre-preparation; S2, mixing; and S3, post-treatment. The prepared water-retaining agent not only can greatly improve the water absorption and water retention performance of the chitosan water-retaining agent, but also can reduce the acidity of acid soil and improve the CEC and fertilizer retention capacity of the soil, and is a multifunctional acid red and yellow soil conditioner.

The invention provides transparent high-impact-resistance heat-resistant MBS (methyl methacrylate-butadiene-styrene) resin and a preparation method thereof, and relates to the field of high polymer material preparation methods, the transparent high-impact-resistance heat-resistant MBS resin is prepared from the following raw materials: water, ethanol, maleic anhydride, an emulsifier, MBS resin grafted latex, potassium persulfate and an antioxidant; the MBS resin grafted latex is prepared from the following raw materials: water, modified styrene-butadiene latex, sodium hydrogen sulfite, potassium persulfate, methyl methacrylate and styrene, the modified styrene-butadiene latex is prepared from the following raw materials: a pre-emulsion, glycidyl methacrylate, ammonium persulfate, divinyl benzene and potassium persulfate; the pre-emulsion is prepared from the following raw materials: water, an emulsifier, butadiene and styrene. The product is good in heat resistance and good in PVC modification effect, and the modified PVC composite material is high in light transmittance, high in cantilever beam impact strength and resistant to aging.

The invention discloses photocuring conductive hydrogel as well as a preparation method and application thereof. According to the invention, methacryloylethyl sulfobetaine (SBMA), acrylic acid (AA) and hydroxyethyl methylacrylate (HEMA) are used as comonomers, deionized water is used as a solvent, N, N '-methylenebisacrylamide (MBAA) is used as a cross-linking agent, ammonium persulfate (APS) is used as an initiator, tetramethylethylenediamine (TEMED) is used as an accelerator, and 2-hydroxy-4'-(2-hydroxyethoxy)-2-methyl propiophenone (Irgacure2959) is used as a photoinitiator; the conductivity is improved by adding an ionic compound potassium chloride (KCl), and the photocuring conductive hydrogel is prepared in a free radical polymerization manner by adopting an LED-UV curing box. The conductive hydrogel disclosed by the invention has the characteristics of good adhesion property, conductivity, mechanical property and the like, and has wide application in the fields of wearable strain sensors and other flexible electronics.

The invention provides loofah sponge nanocellulose hydrogel and a preparation method thereof.The preparation method comprises the following steps that anhydrous citric acid, choline chloride and water are mixed to react, and a ternary eutectic solvent is obtained; dispersing loofah sponge purified cellulose in a ternary eutectic solvent, washing and filtering a product to be neutral, dispersing the product in water, and performing ultrasonic treatment to obtain loofah sponge nanocellulose turbid liquid; dissolving sodium lignin sulfonate and lithium chloride in a sodium hydroxide solution to obtain a precursor solution; mixing the loofah sponge nanocellulose suspension with water, polyacrylamide, ammonium persulfate and N, N-methylene bisacrylamide, pouring the precursor solution into the loofah sponge nanocellulose suspension, uniformly stirring the mixture, pouring the mixture into a mold, and sealing the mold; and forming to obtain the loofah sponge nanocellulose hydrogel. The invention also provides an application of the hydrogel. The hydrogel disclosed by the invention has excellent biocompatibility, mechanical property and conductivity, has a wide application prospect in the field of flexible electronics, and is simple in preparation process, low in cost, green and environment-friendly.

The invention discloses a hyperbranched water reducing agent for high-tensile wet joint UHPC (Ultra High Performance Concrete) as well as a preparation method and application of the hyperbranched water reducing agent, and belongs to the technical field of concrete admixtures. The preparation method comprises the following steps: mixing pentaerythritol and maleic anhydride, adding a catalyst p-toluenesulfonic acid, and carrying out an esterification reaction to prepare an esterification product; carrying out amidation reaction on the esterification product, diethanol amine and a catalyst sodium ethoxide to obtain a prepolymer; acrylic acid, maleic anhydride and the prepolymer are dissolved in deionized water, an initiator ammonium persulfate is added for a free radical copolymerization reaction, and a main chain polymer is obtained; carrying out phosphorylation reaction on the main chain polymer and phosphorus pentoxide to obtain a phosphorylated main chain polymer; the phosphorylated main chain polymer, methoxypolyethylene glycol and a catalyst p-toluenesulfonic acid are subjected to an etherification reaction, a hyperbranched comb-shaped polymer water reducing agent solution is obtained and then subjected to aftertreatment, and the water reducing agent is prepared. According to the hyperbranched comb-shaped polymer water reducing agent prepared by the preparation method disclosed by the invention, the problems of poor flowability and high viscosity of ultra-high performance concrete (UHPC) are solved by combining a linear side chain of a comb-shaped structure and a three-dimensional branch of hyperbranched topology.

The invention relates to the technical field of ton bag lining materials, and particularly discloses a shielding antistatic ton bag lining bag and a preparation method thereof. The invention relates to a shielding antistatic ton bag lining bag, which is prepared by processing a multi-layer composite film with a structure of PET / antistatic layer / PA / PE, and the antistatic layer is prepared from the following raw materials by weight: 40-75 parts of a resin material; 20 to 40 parts of filler; 5-10 parts of a color master batch; 1-3 parts of an antistatic agent; 2-5 parts of a dispersant; 0.2 to 0.4 part of an antioxidant; 4 to 6 parts of polyimide nanofiber; 1-3 parts of a modified carbon nanotube; the modified carbon nanotube is prepared by the following method: S1, pretreating a carbon nanotube raw material with a concentrated nitric acid solution to obtain a pretreated carbon nanotube; and S2, dispersing the pretreated carbon nanotubes in xylene, then adding deionized water and p-toluenesulfonic acid, then adding an aniline monomer, then adding ammonium persulfate, and carrying out a reaction to obtain the composite material after the reaction is finished. The shielding anti-static ton bag lining bag can keep stable anti-static performance under the influence of a severe temperature change environment.

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 belongs to the technical field of lithium battery positive electrode materials, and provides high-compaction-density lithium iron phosphate and a preparation method thereof.The preparation method comprises the following steps that 1, pretreated polyvinyl alcohol is added into deionized water, the temperature is increased to 80-85 DEG C, stirring is conducted, the pH value is adjusted to 10.5-11.0, epichlorohydrin is added for a reaction, aniline is added for a continuous reaction, cooling is conducted, and a product is obtained; adjusting the pH value to 1-2, adding ammonium persulfate for reaction, and dialyzing to remove impurities to obtain modified polyvinyl alcohol; step 2, adding a lithium source, an iron source and a phosphorus source into deionized water for mixing, and performing ball milling and drying to obtain a lithium iron phosphate precursor; step 3, putting the lithium iron phosphate precursor into a tubular furnace, adding an inorganic carbon source, heating for reaction, cooling and crushing to obtain primary sintered lithium iron phosphate; and step 4, mixing the primarily sintered lithium iron phosphate and the modified polyvinyl alcohol, placing the mixture in a tubular furnace, carrying out heating reaction, cooling and crushing to obtain the lithium iron phosphate.

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 relates to a spongy gel phase change cold storage agent for fruit and vegetable preservation and a preparation method thereof. The preparation method comprises the following steps: 1) sequentially adding sodium alginate powder, an N, N '-methylene bisacrylamide aqueous solution, tetramethylethylenediamine and an ammonium persulfate aqueous solution into an acrylamide aqueous solution; (2) transferring the mixed solution into a polytetrafluoroethylene container, quickly putting the polytetrafluoroethylene container into a vacuum dryer filled with allochroic silicagel, vacuumizing by adopting a circulating water vacuum pump, and sealing for overnight cross-linking to prepare spongy gel; and 3) soaking the spongy gel in a potassium chloride solution to prepare the spongy gel phase change cold storage agent. The spongy gel phase change cold storage agent prepared by the method disclosed by the invention has high phase change latent heat and high flexibility; the device can be freely cut to fit the logistics space, and the problem that the internal environment temperature of the logistics space is not uniform due to local cooling is avoided; the potassium chloride solution is used as an additive for adjusting the phase change temperature of the gel cold storage agent, and the appropriate phase change temperature can be adjusted according to different fruits and vegetables.

The invention discloses a method for promoting anaerobic fermentation of excess sludge to produce short-chain fatty acid, and relates to the field of environmental protection, and the method comprises the following steps: naturally settling the excess sludge, and removing supernate to obtain concentrated sludge; the method comprises the following steps: firstly, adding ammonium persulfate into concentrated sludge to completely dissolve the concentrated sludge, then adding alkali, sealing and placing the concentrated sludge in a constant-temperature shaking table for full reaction, and obtaining sludge after the reaction is finished as pretreated sludge; the pretreated sludge is directly used as a substrate and a fermentation product or inoculated sludge is used as a substrate, nitrogen is filled to expel oxygen, the mixture is sealed and then placed in a constant-temperature shaking table to be subjected to anaerobic fermentation to produce short-chain fatty acid, and pH is not adjusted in the anaerobic fermentation process. According to the method, high-activity free radicals and free ammonia are generated through reaction of alkali and ammonium persulfate to destroy extracellular polymeric substances and cells of the sludge, so that release of organic matters in the sludge is promoted, the yield of short-chain fatty acid in the sludge fermentation liquor is greatly increased, and the anaerobic fermentation time is remarkably shortened.

The invention discloses a preparation method for regulating and controlling the growth of a hydrophobic Cu2S nanowire material on the surface of a copper foil, and relates to the technical field of solid surface, and the preparation method comprises the following specific steps: 1) reacting the treated copper foil in a NaOH solution and an ammonium persulfate solution for 10-30 minutes, taking out the copper foil, washing the copper foil with absolute ethyl alcohol, and drying the copper foil in a drying oven for 10-30 minutes; and soaking the obtained sample in a silane coupling agent KH-570 (gamma-methacryloxy propyl trimethoxy silane) of which the concentration is 2.5% to 10% for 20 to 60 minutes. (2) reacting the sample obtained in the step (1) in a 0.1-1mol / L Na2S solution for 10-30 minutes, then taking out the sample, and continuously soaking the sample in a silane coupling agent for 20-60 minutes to obtain a hydrophobic Cu2S nanowire on the surface of a copper foil; according to the preparation method for regulating and controlling the growth of the hydrophobic Cu2S nanowire material on the surface of the copper foil, the regulation and control of the hydrophobicity of the Cu2S nanowire on the surface of the copper foil are realized by regulating and controlling the proportion of a silane coupling agent and the like; when the modified hydrophobic Cu2S nanowire is soaked in a silane coupling agent KH-570 with the mass concentration of 2.5%-10%, the contact angle of the modified hydrophobic Cu2S nanowire can reach 91.46 degrees to 129.46 degrees.

The invention provides a gel composite adsorbent with a foaming structure as well as a preparation method and application thereof, and the preparation method comprises the following steps: S1, dissolving acrylamide powder in deionized water, and stirring to obtain a solution A; s2, dissolving sodium alginate in the solution A for thickening to obtain a solution B; s3, transferring the solution B into an ice-water bath; s4, adding N, N-methylene bisacrylamide into the solution B, stirring until the N, N-methylene bisacrylamide is completely dissolved, then adding N, N, N ', N'-tetramethylethylenediamine, and stirring until the N, N, N ', N'-tetramethylethylenediamine is uniform to obtain a solution C; s5, adding ammonium persulfate into the solution C, and stirring until the ammonium persulfate is completely dissolved to obtain a solution D; s6, the solution D is poured into a mold and then vacuumized to form gel, and a hydrogel sample is obtained after gel forming; s7, drying the hydrogel sample, and then soaking the dried hydrogel sample in a salt solution to obtain a soaked gel material; and S8, drying the soaked gel material to obtain the finished product composite adsorbent.

The invention discloses a preparation method of a natural latex grafted lignin biological adhesive. The preparation method comprises the following steps: dissolving lignin in deionized water to prepare a 15wt% lignin solution; adding 1 part of 2wt% ammonium persulfate solution, heating to 60 + / -2 DEG C, and stirring at the speed of 300-330rpm for 45 minutes to obtain a lignin and ammonium persulfate mixed solution; adding 15 parts of the mixed solution into 100 parts of natural latex, heating to 60 + / -2 DEG C, stirring at the speed of 300-330rpm for 3 hours to promote graft polymerization reaction of the lignin and the natural latex, and cooling at room temperature to obtain the natural latex grafted lignin biological adhesive. According to the invention, natural latex and lignin are taken as main raw materials, harmful substances common in the traditional petroleum-based adhesive are not contained, and the adhesive is friendly to human body and environment, safe to use, simple and feasible in preparation process, wide in raw material source and easy for large-scale production, is suitable for multiple fields of wood processing, furniture manufacturing, textile printing and dyeing and the like, and has a wide market prospect.

The invention provides a preparation method and application of coating enhanced nano silver powder. The preparation method comprises the following steps: S1, preparing nano silver by taking silver nitrate as a silver source and polyethyleneimine as a reducing agent; s2, carrying out coating modification on the nano-silver by adopting aniline and ammonium persulfate under an acidic condition; s3, modifying the polyaniline coated nano-silver by adopting chloroacetic acid to obtain chloroacetic acid modified polyaniline coated nano-silver; s4, preparing a modified graphene oxide dispersion liquid; s5, partially reducing the graphene oxide; s6, partially reduced graphene oxide is adopted to load the chloroacetic acid modified polyaniline coated nano-silver, polyaniline coating and reduced graphene oxide compounding are carried out, and the dispersity and stability of nano-silver particles are effectively improved. The oxidation state of polyaniline promotes the release of silver ions through an electron transfer effect, so that the antibacterial effect is enhanced; and the partially reduced graphene oxide synergistically accelerates the release of silver ions, so that the antibacterial property is further improved.

The invention discloses injectable hydrogel with anti-inflammatory and drainage functions for promoting anal fistula healing and a preparation method of the injectable hydrogel. The preparation method comprises the following steps: adding acrylic acid-N-succinimide ester and acrylated beta-cyclodextrin into a gelatin solution; then adding a carbon nanotube grafted with poly (vinyl benzyl trimethyl ammonium chloride), stirring and carrying out ultrasonic treatment; adding ammonium persulfate, stirring and performing ultrasonic treatment to obtain a mixture A; and heating the mixture A, cooling, washing and mechanically crushing to obtain the GAA coated CNT-g-PVBTMA hydrogel. The hydrogel is novel quaternized molecular brush grafted injectable hydrogel, has excellent swelling resistance and a broken porous structure, can effectively fill a fistula, and is beneficial to discharge of exudate; the hydrogel can also capture inflammatory cytokines of the fistula through electrostatic interaction, and shows excellent anti-inflammatory characteristics.

The invention discloses a method for ash reduction and purification of waste tire pyrolysis carbon black, and belongs to the technical field of high-value utilization of waste tire pyrolysis carbon black. The method is carried out according to the following steps: waste tire pyrolysis carbon black undergoes an oxidation-reduction reaction with an ammonium persulfate solution, and filtrate A and carbon black product A are obtained by filtration; metal zinc particles are added to filtrate A, and the filtrate undergoes an oxidation-reduction reaction with hydrogen ions in the filtrate, and incompletely reacted metal zinc particles and filtrate B are obtained by filtration; filtrate B is heated and evaporated to crystallize to obtain zinc sulfate heptahydrate, and ammonia generated during the heating and evaporation process is passed into water to obtain ammonia water; under the protection of an inert gas, carbon black product A is heated, and a nitrogen gas stream is condensed to obtain sublimated sulfur and carbon black product B; carbon black product B is subjected to wet magnetic separation to obtain steel particles and a carbon black slurry product; the carbon black slurry product is subjected to nanobubble flotation to obtain a pure carbon black product. The method realizes the effective recovery of each valuable component in waste tire pyrolysis carbon black.

The invention relates to conductive silk fibroin loaded methacrylated gelatin hydrogel and a preparation method thereof, and belongs to the technical field of biomedical materials. The preparation method comprises the following steps: S1, adding silk fibroin fibers into a dopamine hydrochloride solution, stirring, standing, then adjusting the pH value to 8-9, and carrying out a heating reaction to obtain polydopamine grafted silk fibroin fibers; s2, sequentially dipping the polydopamine grafted silk fibroin fibers in an ammonium persulfate solution and a pyrrole solution to obtain conductive silk fibroin fibers; and S3, adding the conductive silk fibroin fibers into the methacrylated gelatin solution, carrying out ultraviolet light cross-linking curing, and then soaking the conductive silk fibroin fibers in a glycerol solution to obtain the conductive silk fibroin loaded methacrylated gelatin hydrogel. The method not only can ensure the structural integrity and conductive continuity of a conductive network in the hydrogel, but also breaks through the dependence of in-situ polymerization on the permeability of a matrix.

The invention discloses a preparation method and application of chlorine dioxide preservative paper.The preparation method comprises the steps that starch, nanocellulose, hydrogen peroxide, ferric sulfate, distilled water and sodium hydroxide are mixed to obtain gelatinized starch, and then the gelatinized starch is mixed with water-based acrylic resin, casein, alkyl glycoside and ammonium persulfate to obtain composite starch glue; mixing sodium chlorite and composite starch glue to obtain fresh-keeping coating liquid A, and then coating the fresh-keeping coating liquid A on fresh-keeping base paper to obtain fresh-keeping coating liquid A paper; citric acid and distilled water are mixed to obtain fresh-keeping coating liquid B, and then fresh-keeping base paper is soaked in the fresh-keeping coating liquid B to obtain fresh-keeping coating liquid B paper; the fresh-keeping coating liquid A paper and the fresh-keeping coating liquid B paper are attached to obtain the chlorine dioxide fresh-keeping paper. The chlorine dioxide fresh-keeping paste is pasted on the inner side of the blueberry packaging box cover to keep the blueberries fresh. The chlorine dioxide preservative paper prepared by the invention can solve the problems of burst release and short retention time of chlorine dioxide, can reduce the problems of easy softening, rot and deterioration of picked blueberries, prolongs the shelf life of the blueberries, and improves the commodity value of the blueberries.

The invention discloses a preparation method and application of a nickel-doped graded nano array electro-catalysis material, and relates to the technical field of nano material preparation, the preparation method comprises the following steps: preparing a solution by taking foamy copper as a substrate material and sodium hydroxide and ammonium persulfate as raw materials; a copper hydroxide nanobelt array precursor is synthesized on a foamy copper substrate in an in-situ growth mode through chemical oxidation treatment, then the precursor is converted into a nickel-doped cuprous sulfide nanorod array through hydro-thermal treatment, uniform nanosheets are formed on nanorods through the electro-deposition process, and the nickel-doped graded nanorod array electro-catalysis material can be obtained. By optimizing the synthesis method and adjusting the doping proportion, the obtained graded nano array shows relatively low overpotential and excellent stability in an electro-catalytic reaction, and the problems of low catalytic efficiency, poor durability and the like and insufficient stability of an existing catalyst are solved.

The invention relates to the technical field of lithium ion battery fire extinguishing agents, in particular to a lithium ion battery water-based fire extinguishing agent and a preparation process. The water-based fire extinguishing agent for the lithium ion battery is prepared from the following components in parts by mass: 70 to 80 parts of water, 25 to 35 parts of starch grafted ammonium phosphate-montmorillonite compound, 15 to 25 parts of polyhydric alcohol, 5 to 10 parts of saponin, 3 to 5 parts of potassium perfluorobutanesulfonate, 10 to 15 parts of diethylene glycol monobutyl ether, 3 to 5 parts of N, N-diethyl-1, 3-propane diamine, 4 to 6 parts of nano silicon dioxide and sodium carboxymethyl cellulose. The sodium carboxymethyl cellulose accounts for 5-7% of the mass of the starch grafted ammonium phosphate-montmorillonite compound; the starch grafted ammonium phosphate-montmorillonite compound comprises starch, montmorillonite, ammonium phosphate, ammonium persulfate, ethyl acetate and lauryl sodium sulfate. The embodiment of the invention provides a water-based fire extinguishing agent for a lithium ion battery and a preparation process, and aims to solve the problems of electric shock risk and after-combustion risk when the water-based fire extinguishing agent extinguishes the lithium ion battery in the related technology.

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 belongs to the technical field of composite materials and sensors, and particularly relates to a preparation method and application of an ultrahigh-tensile conductive hydrogel material. The preparation method comprises the following steps: adding acrylamide (AM), N, N '-methylene bisacrylamide (MBA), ammonium persulfate (APS) and an MXene organic dispersion liquid into a sodium carboxymethyl cellulose (CMC-Na) solution at room temperature, and uniformly stirring to obtain a prefabricated liquid; transferring into a mold, and carrying out polymerization reaction in a drying oven for 2-6 hours to prepare CMC-Na / PAM / MXene conductive hydrogel of an interpenetrating network; the prepared CMC-Na / PAM / MXene conductive hydrogel of the interpenetrating network is soaked in ethylene glycol aqueous solutions with different concentrations, and after solvent replacement, the ultrahigh-tensile conductive hydrogel is prepared. The MPAE conductive composite hydrogel provided by the invention can accurately monitor tiny motion information of a human body and has good sensing performance.

The invention provides an acrylate assistant for PVC (polyvinyl chloride) and a preparation method of the acrylate assistant, and belongs to the technical field of acrylate assistants. The preparation method comprises the steps of nano montmorillonite functionalization, synthesis of a core layer, synthesis of a middle layer and synthesis of a shell layer. The synthesis step of the core layer comprises the following steps: adding a core layer emulsion into a reaction kettle, adding an ammonium persulfate solution for the first time, heating to 64-68 DEG C, adding an ammonium persulfate solution for the second time, and reacting for 48-55 minutes to obtain a functionalized core emulsion; the core layer emulsion is prepared from deionized water, functionalized nano montmorillonite, sodium allyloxy hydroxypropyl sulfonate, butyl acrylate, 2-ethylhexyl acrylate, hydroxyethyl methylacrylate and gamma-methacryloyloxypropyltrimethoxysilane through ultrasonic treatment, and the core layer emulsion is prepared from the deionized water, the functionalized nano montmorillonite, the sodium allyloxy hydroxypropyl sulfonate, the butyl acrylate, the 2-ethylhexyl acrylate, the hydroxyethyl methylacrylate and the gamma-methacryloyloxypropyltrimethoxysilane through ultrasonic treatment; the prepared acrylate auxiliary agent is used in PVC, the fluidity can be improved, and meanwhile the impact resistance, the strength performance and the high-temperature stability performance are enhanced.

The invention discloses an in-situ self-condensing hydrogel based on hydrothermal carbonization synthesis and a preparation method thereof, belongs to a water retention material in an ecological restoration technology and an in-situ self-condensing technology, and aims to solve the technical problems of high energy consumption and serious environmental pollution during hydrogel preparation in the prior art. The preparation method comprises the following steps: preparing modified hydrothermal carbon filtrate, N, N '-methylene bisacrylamide, acrylamide and ammonium persulfate; the modified hydrothermal carbon filtrate comprises plant powder, sodium hydroxide and urea; the preparation method comprises the following steps: weighing sodium hydroxide and urea, and dissolving to obtain a mixed solution; weighing plant powder, pouring the plant powder into the mixed solution, uniformly mixing, reacting and carrying out suction filtration to obtain modified hydrothermal carbon filtrate, so as to obtain a mixture 1; uniformly mixing N, N '-methylene bisacrylamide, acrylamide and the mixture 1, adding ammonium persulfate, uniformly mixing to obtain a mixture 2, reacting the mixture 2 at normal temperature, washing, and drying to obtain the in-situ self-condensing hydrogel.

The invention discloses a method for preparing anhydrite through ultrasound-assisted phosphogypsum crystal transformation, which is characterized in that phosphogypsum is used as a raw material, ammonium persulfate is used as an additive, a dilute sulfuric acid solution is used as a crystal transformation agent, and the anhydrite is prepared by adopting a sulfuric acid method under ultrasound-assisted action. The process for preparing the anhydrous gypsum has the characteristics of low sulfuric acid concentration, low equipment corrosion degree, low heating temperature, low energy consumption, high whiteness of the product anhydrous gypsum and small particle size.

The invention discloses a modified multi-walled carbon nanotube, a preparation method thereof and a conductive polypropylene composite material containing the modified multi-walled carbon nanotube, and the preparation method of the modified multi-walled carbon nanotube comprises the following steps: S1, taking lauryl sodium sulfate, adding the lauryl sodium sulfate into water, and fully dissolving to prepare a lauryl sodium sulfate solution with the concentration of 3-5mmol / L; s2, adding a multi-walled carbon nanotube into the solution, and stirring for 5-6 hours; s3, adding a pyrrole monomer into the mixed solution in the step S2, and stirring for 1-3 hours; and then adding an initiator ammonium persulfate into the solution, and carrying out stirring reaction at 20-30 DEG C for 4-6 hours to prepare the polypyrrole-coated multi-walled carbon nanotube. The prepared modified multi-walled carbon nanotube has an excellent coating effect, and the dispersing performance and the conductivity of the modified multi-walled carbon nanotube in a polypropylene material can be improved, so that the conductive polypropylene composite material is endowed with a stable and excellent conductive effect under the condition that the addition amount is reduced, and the modified multi-walled carbon nanotube has practical application significance.