48 results about "Dodecylsulfonic acid" patented technology

The invention provides a low-temperature-impact-resistant food packaging material and a preparation method and application thereof.The low-temperature-impact-resistant food packaging material is prepared from, by mass, 100 parts of polylactic acid, 1-10 parts of modified layered double hydroxide and 5-40 parts of hyperbranched polyester; wherein the modified layered double hydroxide is obtained by treating layered double hydroxide with a composite anionic surfactant and then treating the treated layered double hydroxide with an organic cationic compound with a long alkyl chain; the composite anionic surfactant comprises a first anionic surfactant and a second anionic surfactant; wherein the first anionic surfactant comprises sodium dodecyl sulfate; the second anionic surfactant comprises a sulfonate anionic surfactant containing an amido bond and a catechol structure. Through the formula design, the impact toughness of the material at low temperature can be improved while the mechanical property of polylactic acid is maintained, and the material can be suitable for the field of food packaging.

The invention belongs to the field of carbon-based composite materials, and particularly relates to a short carbon fiber reinforced carbon-ceramic composite material. The preparation method comprises the following steps: mixing mesophase pitch powder and resin powder according to a mass ratio of (5-7): (3-5) to obtain a mixed binder; uniformly mixing nanoscale carbon black serving as a reinforcing phase and sodium dodecyl sulfate serving as a dispersing agent to obtain modified nano carbon black; uniformly mixing the obtained mixed binder with modified carbon black according to the ratio of 100: (1-4) to obtain a mixed binder; weighing the modified carbon black enhanced mixed binder and short carbon fibers according to a mass ratio of (40-60): (40-60), and uniformly mixing to obtain pressed powder; and carrying out hot press molding, carbonization and reactive infiltration to obtain the short carbon fiber reinforced carbon-ceramic composite material. The process is simple and controllable, the obtained product is high in density, high in strength and high in friction coefficient stability, and industrial application is facilitated.

The invention relates to the field of molecular biology, and discloses a nucleic acid releasing agent for isothermal amplification and a use method of the nucleic acid releasing agent. Comprising the following steps: step 1, preparing a polyoxypropylene polyoxyethylene copolymer diluent, a defoaming agent SE-15 diluent, an ethyl phenyl polyethylene glycol NP-40 diluent, a sodium polyethylene sulfonate diluent and a Proclin300 diluent in sequence through RNA enzyme-free water; and 2, sequentially preparing an ethylenediamine tetraacetic acid disodium salt mother solution, a sodium dodecyl sulfate mother solution and a glycine mother solution through RNA enzyme-free water. Sodium polyethylene sulfonate can be specifically combined with protein amplification inhibitors in a sample to remove mucoprotein, hemoglobin, polysaccharide and other inhibitors in the swab sample, and disodium ethylene diamine tetraacetate can chelate metal ions to reduce the influence of nuclease on target nucleic acid.

The invention discloses a compound fluralab chewable tablet and a preparation method thereof, and relates to the technical field of veterinary drug preparations, the chewable tablet is composed of fluralab, pyrantel and moxidectin solid dispersion constructed by poloxamer 407 / lauryl sodium sulfate (or sodium dodecyl sulfate); preferably, the particle size D50 of the dispersion is 5-30 microns, and D90 is less than or equal to 80 microns. The preparation method comprises the following steps: firstly, dissolving moxidectin in the system to form a clear solution, drying under reduced pressure, and grinding and sieving at low temperature to obtain a dispersed material; premixing with microcrystalline cellulose, then mixing with lactose, adding a disintegrating agent and a lubricating agent, and carrying out prepressing-main pressing two-stage tabletting to obtain the tablet. The system can maintain amorphous distribution of moxidectin in the tablet, the content uniformity and dissolution and acceleration stability are remarkably improved, broad-spectrum synergy is formed by the moxidectin, the fluralasodium and the pyrantel, and the moxidectin tablet is suitable for killing fleas and ticks, treating roundworms and hookworms and preventing canine heart filariasis and tubuloidiasis.

The application provides a low pour point nonionic surfactant and a preparation method thereof, which is composed of the following raw materials in parts by weight: C13 isomeric fatty alcohol polyoxyethylene ether 18-30 parts, reverse EO / PO block copolymer 10-20 parts, sodium diisooctyl sulfosuccinate 1-7 parts, sodium dodecyl sulfonate 1-5 parts, glyceryl laurate 1-5 parts, isopropyl alcohol 5-10 parts, and propylene glycol 1-5 parts; the formula is constructed based on a nonionic surfactant as a main body, ion surfactants and additives are introduced, and the system is optimized, so that a low pour point nonionic surfactant with excellent adsorption capacity and decontamination capacity is obtained.

The application relates to the technical field of chemical energy and electric energy conversion, and particularly discloses a zinc-nickel battery electrolyte additive based on dynamic interface modification and a preparation method thereof. The additive is composed of an interface film former composed of sodium phytate and sodium dodecyl sulfonate, a cerium acetylacetone electric field regulator and a double-end amino polyethylene glycol bridging component in a specific mass ratio. Through the multiple synergistic mechanisms of interface film formation, electric field regulation and molecular bridging, the additive can construct an intelligent dynamic interface layer on the surface of a zinc negative electrode, and can synchronously and efficiently inhibit zinc dendrite growth and zinc self-corrosion. The microspherical additive prepared by using a high-speed shearing and spray drying process has good dispersibility and high stability. When the additive is applied to a zinc-nickel battery electrolyte, the cycle life, rate performance and high and low temperature performance of the battery can be remarkably improved, and the additive has important practical value.

This invention discloses a denitrification biological carrier, its preparation method, and its application. The raw materials for preparing the denitrification biological carrier include an iron agent, modified activated carbon, polycaprolactone, sodium dodecyl sulfate, and a hydrogel binder. The modified activated carbon is 3-chloro-2-hydroxypropyltrimethylammonium chloride-modified activated carbon. The iron agent not only removes dissolved oxygen from water but also reduces total nitrogen in wastewater. The modified activated carbon improves its adsorption affinity for nitrogen-containing compounds. Polycaprolactone serves as a slow-release carbon source for denitrification, exhibiting high carbon source utilization. Sodium dodecyl sulfate, through its foaming properties, together with the modified activated carbon, iron agent, and polycaprolactone, forms a high-mechanical-strength, rough, and porous biological carrier structure, providing excellent attachment conditions for heterotrophic denitrifying bacteria. Therefore, applying the denitrification biological carrier of this invention to wastewater treatment systems can achieve good nitrogen removal efficiency and economic benefits.

The application discloses a GSH / pH dual-response Cu2O@Cu 2+ / ZIF-67@ZnPc core-shell structure nano drug, a preparation method and application thereof, and belongs to the technical field of metal organic framework materials as drug transportation carriers. First, Cu2O nanospheres are used as templates, sodium dodecyl sulfonate is used to change the potential of the Cu2O nanospheres, and then the Cu2O nanospheres are reacted with a cobalt nitrate hexahydrate solution and a 2-methyl imidazole methanol solution to obtain Cu2O@Cu 2+ / ZIF-67 core-shell structure nano material, and then a photosensitizer, a tetra-carboxy phthalocyanine zinc and a polypropylene glycol and ethylene oxide polyadduct are added to obtain the target nano drug. The nano drug is based on the synthesis of a uniform doped core-shell MOFs structure from a Cu2O self-template, has good product stability and high drug loading rate, and can activate chemical kinetics and photodynamic synergy treatment (CDT / PDT) in a tumor microenvironment.

This invention provides a modified lithium iron manganese phosphate material, its preparation method, and a lithium-ion battery. The preparation method includes: Step S1, adding a lithium source, an iron source, a manganese source, a phosphorus source, a first carbon source, hexadecyltrimethylammonium chloride, and sodium dodecyl sulfonate to water, mixing them, and then grinding them to obtain a first slurry; Step S2, sequentially subjecting the first slurry to first spray drying, first calcination, and first pulverization to obtain a precursor; Step S3, adding the precursor and a second carbon source to water, mixing them, and then grinding them to obtain a second slurry; Step S4, sequentially subjecting the second slurry to second spray drying, second calcination, and second pulverization to obtain the modified lithium iron manganese phosphate material. This invention effectively optimizes the material structure of lithium iron manganese phosphate and improves its thermal stability and ion transport characteristics by introducing special hexadecyltrimethylammonium chloride and sodium dodecyl sulfonate during the synthesis of the lithium iron manganese phosphate material.

The application provides a qualitative and quantitative detection method of polynaphthalene formaldehyde sulfonate sodium salt in a pesticide preparation, comprising the following steps: S10, solution preparation: preparing a standard sample solution, a series of concentration standard solutions and a sample solution by using pure water as a solvent; S20, chromatographic detection: adopting high performance liquid chromatography, using a C18 chromatographic column as a stationary phase, using a mixed solution of a water solution containing sodium dodecyl sulfonate and acetonitrile as a mobile phase for isocratic elution, and detecting at a wavelength of 240 nm; S30, qualitative determination: comparing the chromatographic peak retention time of the standard sample solution and the sample solution, and determining whether the polynaphthalene formaldehyde sulfonate sodium salt is contained according to the relative deviation; and S40, quantitative determination: drawing a standard curve according to the concentration and peak area of the series of concentration standard solutions, and calculating the content according to an external standard method. The application realizes accurate qualitative and quantitative determination of the polynaphthalene formaldehyde sulfonate sodium salt by combining chromatographic separation and ultraviolet detection, has the advantages of strong specificity, high accuracy, good reproducibility and simple operation, and is suitable for detection of various pesticide preparations.

The invention relates to a composite admixture for improving the dry shrinkage performance of alkali slag cement, and a preparation method and a use method thereof, and belongs to the technical field of building materials. The composite additive is prepared from the following components in parts by mass: 30 to 50 parts of potassium dodecyl sulfate, 30 to 50 parts of alkali slag, 10 to 20 parts of nano silicon dioxide, 2 to 6 parts of stearic acid and 15 to 25 parts of sodium lignin sulfonate. By reasonably preparing the components in the admixture and using amounts of the components and utilizing the synergistic effect of the components, the internal pore structure of an alkali slag cement test piece is remarkably improved, and the capillary pressure is reduced, so that the drying shrinkage phenomenon is reduced. In addition, the admixture almost has no adverse effect on the mechanical property of an alkali-activated slag cement test piece, the synthesis method is simple and convenient, the raw materials are easy to obtain, and the admixture has good industrial production prospects.

The invention belongs to the technical field of high polymer materials, and particularly relates to a rubber label containing an epoxy group agglomerated siloxane microsphere emulsion and a preparation method thereof.The preparation method comprises the steps that S1, sodium dodecyl sulfate, sodium bicarbonate and sodium dihydrogen phosphate serve as raw materials to prepare a water phase, modified silane, n-hexadecane and azodiisobutyronitrile serve as raw materials to prepare an oil phase, and the oil phase is prepared into an oil phase; carrying out emulsification treatment on the water phase and the oil phase to obtain a miniemulsion, and carrying out polymerization reaction on the miniemulsion to obtain an epoxy group-containing agglomerated siloxane microsphere emulsion; s2, polyol, isocyanate, a chain extender, 1, 4-butanediol and stannous octoate are used as raw materials to prepare a prepolymer; and S3, adding the epoxy group-containing agglomerated siloxane microsphere emulsion into the prepolymer for stirring reaction, and then pouring into a mold for molding to obtain the rubber label containing the epoxy group-containing agglomerated siloxane microsphere emulsion. The hardness and heat resistance of the material are effectively improved, and good flame retardant property is obtained.

This invention relates to the field of thermochromic coating technology, and discloses a method for preparing thermochromic coatings and a window film for their application; comprising the following steps: Step 1: Sodium dodecyl sulfonate and polyvinylpyrrolidone are uniformly mixed at a mass ratio of 1:(0.3~0.4) to obtain a surfactant; Step 2: Modified polyurethane and acrylic resin are added to a solvent, heated and stirred at 50~60℃ for 1~2 hours, and surfactant, pigment, thermochromic microcapsules, defoamer, and plasticizer are added sequentially, and mixing is continued for 40~60 minutes to obtain a thermochromic coating; the polymer material is melt-extruded, biaxially stretched, shaped and cooled to obtain a base film; the pressure is set to 0.8~1N / cm. 2 At a speed of 1~2m / min, the thermochromic coating is evenly applied to the base film and dried at 60~70℃ to produce a smart window film, which can effectively reduce energy consumption.

The application provides a flexible phase change energy storage soft paste material and a preparation method and application thereof, relates to the technical field of phase change energy storage materials, and the flexible phase change energy storage soft paste material comprises twelve sodium hydrogen phosphate, water, a crystal structure stabilizer, a phase change form changing agent, and a phase change temperature regulator; the crystal structure stabilizer comprises at least one of glycerol, sorbitol, propylene glycol and water-soluble silicone oil; and the phase change form changing agent comprises at least one of sodium alginate, gelatin, xanthan gum, water glass, sodium dodecyl sulfonate, calcium chloride and sodium bicarbonate. The application solves the technical problems that the phase change temperature of twelve sodium hydrogen phosphate does not match the human body heat management temperature, the surface of the phase change material liquid-solid phase change, especially the solidified and hardened phase change material, is uneven, the comfort is poor, the cycle stability of the phase change material is poor, and the service life is short, and achieves the technical effect that the materials are compounded to play a high-efficiency synergistic effect, and the flexible phase change energy storage soft paste material is suitable for human body heat management.

The invention relates to the field of wind energy map data processing, in particular to an admixture for tower drum concrete and a preparation method and application thereof.The admixture is prepared from, by weight, 10-15 parts of silica fume, 15-30 parts of microbeads, 15-25 parts of superfine slag powder, 15-25 parts of fly ash, 5-7 parts of structural self-waterproofing agent and 1-3 parts of shrinkage reducing agent; the structural self-waterproofing agent is selected from at least one of xerogel, a modified expanding agent, fluosilicate, zeolite powder, sodium gluconate, sodium pyrophosphate and sodium dodecyl sulfate; the shrinkage reducing agent is a polyacrylate emulsion, the polyacrylate emulsion comprises an acrylate monomer and a modifier, and the modifier comprises at least one of polyethylene glycol, propylene glycol, nano silicon dioxide, glycerol, sodium silicate and alum. The problems of hydration heat control and appearance improvement can be solved at the same time.

The invention relates to the field of regenerated cellulose acetate, and particularly discloses a method for preparing regenerated cellulose acetate from a waste glasses frame. A method for preparing regenerated cellulose acetate from a waste glasses frame comprises the following steps: (1) crushing the waste glasses frame to prepare glasses frame powder; (2) adding the glasses frame powder into water containing sodium dodecyl sulfate, carrying out ultrasonic treatment at 80-100 DEG C for 30-40 minutes, and drying to obtain pretreated glasses frame powder; (3) adding the pretreated glasses frame powder into N-methyl pyrrolidone, dissolving for 30-40 minutes, adding a composite adsorbent, and performing microfiltration to obtain a cellulose acetate solution; (4) adding the cellulose acetate solution into water, filtering, washing and drying to obtain cellulose acetate powder; and carrying out reduced pressure distillation on the filtrate, and recovering the N-methyl pyrrolidone. According to the method, the mechanical property of the regenerated cellulose acetate is improved, and secondary pollution of the solvent is avoided.

The application belongs to the technical field of functional hydrogel and its adsorption and extraction application, and provides Mxene / polyazole flexible composite hydrogel, a preparation method and application thereof, so as to solve the problem of poor flexibility and mechanical property of the current hydrogel. The hydrogel is MXene / PPy / HMO composite flexible hydrogel, and is directly used as a bulk material to realize lithium recovery. Lithium ion sieve (HMO), MXene and polyazole network are crosslinked with each other to form a three-dimensional network structure; the mass of MXene is 1%-5% of the polyazole hydrogel, a Mxene network is formed through physical crosslinking, the contained elements are carbon and titanium, and the atomic number ratio is 2:3; a polyazole hydrogel network is formed through chemical crosslinking. In the presence of MXene and HMO, polyvinyl alcohol and sodium dodecyl sulfonate are introduced, and in-situ polymerization can be carried out. The hydrogel has good flexibility and stretchability, and can be self-healing. The method is simple and easy to implement, and a flexible liquid lithium adsorbent can be directly prepared.

The application relates to a compound collector and application thereof in zinc oxide ore flotation, and belongs to the technical field of mineral processing. The compound collector is composed of mixed amine, mixed alcohol, hydrocarbon oil and emulsifier, the mixed amine includes laurylamine and N-dodecyl ethanolamine, the mixed alcohol includes glycerol and n-octanol, the hydrocarbon oil includes kerosene and diesel, and the emulsifier includes sodium dodecyl sulfonate, sodium dodecyl benzene sulfonate and dodecyl phenol polyoxyethylene ether; the zinc oxide ore flotation process includes twice roughing, once scavenging, twice cleaning and once cleaning scavenging, the middlings are not returned to the roughing and cleaning operations, the ore is subjected to crushing, grinding, reagent adding and pulp conditioning, and then is subjected to flotation to obtain zinc concentrate and flotation tailings. The compound collector has high selectivity, high collecting capacity, small flotation foam amount, good fluidity, stable process flow, can avoid the influence of slime on the roughing and cleaning indexes, improves the stability and viscosity of the foam layer, and improves the flotation recovery indexes of the zinc oxide ore.

This invention provides a method for improving the compatibility of layered bimetallic hydroxides with coatings, comprising the following steps: S1, using a mixed solution of divalent and trivalent metal nitrates as a precursor, preparing nitrate-intercalated layered bimetallic hydroxides via co-precipitation; S2, preparing a long-chain fatty acid sodium solution, wherein the long-chain fatty acid sodium solution is at least one selected from sodium laurate solution, sodium dodecyl sulfate solution, and sodium dodecyl sulfonate solution; S3, adding the nitrate-intercalated layered bimetallic hydroxide to the long-chain fatty acid sodium solution, magnetically stirring at room temperature, and centrifuging, washing, drying, and grinding the resulting solution. The method for improving the compatibility of layered bimetallic hydroxides with coatings described in this invention improves the compatibility of layered bimetallic hydroxides with coatings by changing the terminal functional groups of long-chain fatty acids, thereby enhancing the physical barrier effect of the layered bimetallic hydroxides in the coating and increasing the anti-corrosion performance of the coating.

The invention discloses fluorescent micro-nano plastic microspheres as well as a preparation method and application thereof, and belongs to the technical field of micro-nano plastic marking. The preparation method of the fluorescent micro-nano plastic microspheres comprises the following steps: dispersing polymer microspheres in a sodium dodecyl sulfate aqueous solution, and ultrasonically and uniformly mixing to obtain a polymer microsphere dispersion liquid; adding tetrahydrofuran, performing ultrasonic mixing, adding absolute methanol and fluorescent dye, performing ultrasonic mixing and stirring reaction, and performing reduced pressure distillation and washing after the reaction to obtain the fluorescent dye. The fluorescent micro-nano plastic microsphere is stable in fluorescence signal, high in fluorescence intensity and good in stability in an aqueous solution, the fluorescence intensity is not changed within 40 days, and the fluorescent micro-nano plastic microsphere can be applied to the fields of imaging tracing, toxicological research and the like and is wide in application prospect.

This invention relates to the technical field of fire extinguishing agents, and in particular to a fluorine-free foam fire extinguishing agent and its preparation method. By weight percentage, it comprises the following components: 5-15% natural surfactant, 7-10% hydrocarbon surfactant, 0.5-0.7% stabilizer, 3-8% co-solvent, 10-15% antifreeze agent, and the balance being water. The natural surfactant is Sapindus mukorossi saponin, and the hydrocarbon surfactant is a combination of sodium dodecyl sulfate and cocamidopropyl betaine. The use of Sapindus mukorossi saponin, when combined with the hydrocarbon surfactant, significantly reduces the surface tension of the fire extinguishing agent, improving the spreadability and stability of the foam. By optimizing the ratio of stabilizer and co-solvent, the foam's exudation time and anti-burning time are both extended, superior to commercially available products. All components are free of fluorocarbons, readily biodegradable, and environmentally friendly.

The invention belongs to the technical field of gas sensors, and discloses gas-sensitive slurry as well as a preparation method and application thereof. The gas-sensitive slurry is prepared from the following raw materials: a metal oxide gas-sensitive material, platinum powder, silica sol, an organic carrier, carboxymethyl cellulose, low-temperature molten glass powder, sodium dodecyl sulfate and an antioxidant. According to the gas-sensitive slurry prepared by the invention, the proper metal oxide gas-sensitive material, the organic carrier and other admixtures are selected, so that the film forming thickness is uniform, the adhesion is good, the hygroscopicity is low and the oxidation resistance is strong after the gas-sensitive slurry is coated on an MEMS chip, and the prepared MEMS gas sensor is good in repeatability, stable in long-term work and excellent in reliability.

The application belongs to the technical field of material detection and analysis, and particularly relates to a cross-section sample preparation method of superfine tungsten alloy wire, which comprises the following steps: fixing the tungsten alloy wire on a substrate made of the same material; then using epoxy resin and glass powder to perform hot embedding on the tungsten alloy wire, obtaining an embedded sample after cooling; then grinding and polishing the embedded sample under a pressure of 50-60 MPa; finally using a corrosion solution prepared from hydrogen peroxide, ammonia water and sodium dodecyl sulfonate to corrode the embedded sample, obtaining a tungsten alloy wire cross-section sample. The application uses a substrate made of the same material to fix the tungsten alloy wire, which is convenient for positioning the cross-section and avoids the occurrence of original cell reaction during corrosion; by accurately controlling key process parameters such as grinding pressure and polishing disc rotating speed, the cross-section micro-crack defects are effectively eliminated; by selecting a suitable type of corrosion agent and a suitable corrosion treatment time, a standardized detection sample meeting the requirements of microscopic analysis such as metallographic microscope and scanning electron microscope is prepared.

The invention belongs to the technical field of modification of nano cerium oxide, and discloses an antibacterial colloid as well as a preparation method and application thereof. The preparation method of the antibacterial colloid comprises the steps that a polyvinylpyrrolidone solution is taken and added into a silver nitrate solution, ball milling or sand milling is conducted, uniform stirring is conducted, and nano-silver sol is obtained; the preparation method comprises the following steps: uniformly mixing nano cerium oxide with sodium dodecyl sulfate, adding water, and carrying out ball milling or sand milling, stirring and modifying to obtain a nano cerium oxide colloidal solution; and adding the nano-silver sol into the nano cerium oxide colloidal solution, carrying out ball milling or sand milling, stirring, standing, and removing a medium to obtain the nano-silver-loaded nano cerium oxide antibacterial colloid. The preparation method of the antibacterial colloid is simple, efficient, environment-friendly, easy to realize industrial production and low in cost. Moreover, the antibacterial colloid disclosed by the invention has good antibacterial performance, and has wide application prospects in the fields of antibiosis, mildew prevention, ceramic tiles, coatings, medical apparatuses and instruments, articles for daily use, biomedical materials and the like.

The invention relates to the technical field of sodium batteries, in particular to a preparation method for improving the cycle performance of a sodium battery positive electrode material, and the preparation method comprises the following steps: step 1, mixing Na2C6O6, carbon nanotubes and sodium dodecyl sulfate, dissolving in water, uniformly stirring, and carrying out hydrothermal reaction, deionized water centrifugation and drying to obtain modified Na2C6O6; step 2, uniformly mixing and stirring the modified Na2C6O6, a binder polyvinylidene fluoride and a conductive agent Super P, coating an aluminum foil with the mixture, and drying the aluminum foil to obtain a positive pole piece; and step 3, assembling the button cell shell, placing the positive pole piece, dropwise adding the electrolyte, placing the diaphragm, dropwise adding the electrolyte, placing the negative pole piece, placing the gasket elastic sheet and the button cell shell in sequence to obtain the button cell. According to the invention, the Na2C6O6 material is subjected to doping modification of the carbon nanotubes and the sodium dodecyl sulfate, so that the cycle performance of the Na2C6O6 positive electrode material is effectively improved.

The application discloses an aerogel fire extinguishing agent and a preparation method thereof. The aerogel fire extinguishing agent is prepared from the following raw materials by simple mixing and hydrothermal reaction, and then the solid product after the hydrothermal reaction is subjected to CO2 supercritical drying: 10-30 parts of graphene aerogel powder, 1-5 parts of Mg(HCO3)2 powder, 0.1-0.5 parts of inorganic fiber, 0.01-0.1 parts of sodium dodecyl sulfonate and 50-100 parts of water. The inorganic fiber is combined with the layered porous graphene aerogel to form a stable product structure, the magnesium bicarbonate is effectively dispersed on the surface of the graphene and in the graphene aerogel, and the fire extinguishing substance is gradually released along with the progress of the fire extinguishing process, so that the rekindling is effectively prevented. The specific structure is constructed to synergistically combine the simple raw materials, so that the prepared fire extinguishing agent has the excellent characteristics of rapid cooling, non-rekindling, environmental friendliness, high-efficiency toxic gas adsorption and the like, the fire extinguishing efficiency is higher, the ignition prevention effect is better, the battery combustion fire can be effectively extinguished, and the application value is extremely high.

This invention provides a low-grade phosphate rock collector, its preparation method, and its application. The low-grade phosphate rock collector comprises modified oleic acid, sodium oleate, and sodium dodecyl sulfonate. The components in the low-grade phosphate rock collector, by mass percentage, include: 60-80% modified oleic acid, 20-30% sodium oleate, and 5-10% sodium dodecyl sulfonate. The preparation method of this invention is simple, uses widely available raw materials, requires no complex chemical reactions or high-temperature and high-pressure conditions, requires minimal equipment investment, has low production costs, and all components are environmentally friendly agents with good biodegradability, minimizing impact on water and soil environments, thus conforming to the green and low-carbon mining development concept.

The invention provides a lithium ion battery positive electrode material recovery method, and belongs to the field of lithium ion batteries, and the method comprises the following steps: disassembling a waste lithium iron phosphate battery to obtain a positive electrode piece; soaking the positive pole piece in a treating fluid containing sodium dodecyl sulfate and tartaric acid, and performing stripping treatment on the aluminum foil on the positive pole piece to obtain a positive pole material; and mixing the positive electrode material with a lithium source, and reacting in a hydrothermal environment at 100-150 DEG C to obtain the regenerated lithium iron phosphate positive electrode material. Efficient stripping of the positive electrode material and the aluminum foil and in-situ complexing removal of aluminum impurities are achieved, a low-temperature hydrothermal regeneration technology is combined, the crystal structure of the LFP is repaired, the lithium element is supplemented, structural damage and high energy consumption caused by traditional high-temperature treatment are effectively avoided, stripping-regeneration integration is achieved, the process is simplified, the cost is controllable, and the method is suitable for large-scale industrial production. The regenerated lithium iron phosphate positive electrode material is high in purity and excellent in electrochemical performance, and a new path is provided for green, efficient and large-scale recovery of waste LFP batteries.

This invention discloses a dual-response hydrogel-based wet / thermal generator and its preparation method. The preparation method includes: mixing lauryl methacrylate, lithium chloride, tannic acid, lithium dodecyl sulfonate, phytic acid, glycerol, pure water, acrylamide, and 2-acrylamide-2-methylpropanesulfonic acid in a specific ratio, and stirring at 60°C to dissolve and obtain a premixed solution; adding a photoinitiator and a crosslinking agent to the premixed solution, mixing thoroughly, and then injecting into a mold; and polymerizing under 365nm ultraviolet light to obtain a dual-response hydrogel; this hydrogel can be matched and assembled with hydrophobic carbon cloth or graphite plates to construct a wet / thermal generator with three working modes: wet power generation, thermal power generation, and wet / thermal synergistic power generation. This generator combines wet power generation and ion thermoelectric functions and can be applied to self-powered human body sensor systems, motion monitoring, and information transmission.

The application provides a low-temperature impact-resistant food packaging material and a preparation method and application thereof. The low-temperature impact-resistant food packaging material comprises the following raw materials in parts by mass: 100 parts by mass of polylactic acid, 1-10 parts by mass of modified layered double hydroxide, and 5-40 parts by mass of hyperbranched polyester. The modified layered double hydroxide is obtained by treating layered double hydroxide with a complex anionic surfactant and then treating the layered double hydroxide with an organic cationic compound with a long alkyl chain. The complex anionic surfactant comprises a first anionic surfactant and a second anionic surfactant. The first anionic surfactant comprises sodium dodecyl sulfonate. The second anionic surfactant comprises a sulfonate anionic surfactant containing an amide bond and a catechol structure. Through the above formula design, the impact toughness of the material at low temperature can be improved while the mechanical properties of polylactic acid are maintained, and the material can be applied to the field of food packaging.