3445 results about "Toluene" patented technology

The invention relates to a polymer binder for a sulfide solid-state battery as well as a preparation method and application of the polymer binder. The binding agent is formed by copolymerizing vinyl triethoxy silane, 4-vinyl phenylboronic acid lithium and styrene. Silane groups are introduced, the interface adhesiveness with sulfide electrolyte is enhanced through the coupling effect of the silane groups, meanwhile, water in a system is consumed through a condensation reaction, and the water content of an electrolyte membrane is reduced; 4-vinyl phenylboronic acid lithium provides dissociation lithium ions, the ionic conductivity of the binder is improved, and the negative influence on the conductivity of sulfide electrolyte is reduced; the styrene group improves the solubility of the binder in a non-polar solvent. The binder can be dissolved in solvents such as toluene, xylene and the like, and is mixed with sulfide electrolyte to form a film through a wet coating process, and the process compatibility is high. The binder disclosed by the invention has the characteristics of high cohesiveness, ionic conductivity and low water content, and the interface stability and electrochemical performance of the sulfide solid-state battery can be remarkably improved.

The invention discloses a preparation method of a degradable transparent conductive polymer film, and belongs to the technical field of film preparation. Preparing dispersion liquid I through graphene oxide quantum dots; preparing a dispersion liquid II from polyaniline nanofibers; dissolving pyrrole and toluenesulfonic acid in N, N-dimethylformamide to prepare a reaction solution, adding the dispersion liquid I and the dispersion liquid II, stirring, and adding ferric chloride hexahydrate to obtain a reaction solution; adjusting the pH value of the reaction solution to 1.5, and heating to obtain a polypyrrole solution; preparing cellulose acetate, polyvinyl alcohol and N, N-dimethylformamide to obtain a cellulose acetate solution; mixing the polypyrrole solution and the cellulose acetate solution, adding glutaraldehyde to obtain a mixed solution, and pouring the mixed solution into a mold to prepare a composite wet film; and putting the composite wet film into a hot-pressing forming machine for hot-pressing to generate the polymer film. The conductive polymer film prepared by the invention can be applied to the fields of supercapacitor electrode materials, electromagnetic shielding materials, flexible sensors and the like, and provides a new high-performance material choice for the development of related fields.

The invention relates to the technical field of waterproof coatings, in particular to a polyurethane waterproof coating and a preparation process thereof. The polyurethane waterproof coating is prepared from the following raw materials: toluene diisocynate, polyether polyol, chlorinated paraffin, talcum powder, a latent curing agent, self-repairing microcapsules and temperature-sensitive polymer nanoparticles. According to the self-repairing capsule, hexamethylene diisocyanate serves as a core material, the outer layer of the self-repairing capsule is wrapped with a polyurethane / nano-silicon dioxide hybrid wall material or a urea-formaldehyde resin wall material, and the temperature-sensitive polymer nanoparticles are poly N-isopropylacrylamide. The self-repairing microcapsules and the temperature-sensitive polymer nanoparticles are used, the self-repairing capacity and the capacity of adapting to different environmental conditions of a coating film are improved, when tiny cracks occur in the coating film, the microcapsules are broken to release a repairing agent, the cracks are automatically filled, the integrity of the coating is recovered, and the self-repairing performance of the coating film is improved. And the temperature-sensitive polymer nanoparticles can expand when the temperature rises to further promote the flowing and curing of the repairing agent, so that the service life of the coating film is prolonged, and the maintenance cost is reduced.

A method for separating amoxicillin and phenylacetic acid from reaction solution in one-step enzymatic synthesis of amoxicillin is provided. The method employs immobilized penicillin acylase mutant to catalyze the one-step synthesis of amoxicillin from penicillin potassium, and develops a separation process for the resulting reaction mixture. The technical scheme mainly comprises: Firstly separating the immobilized penicillin acylase mutant from the reaction solution through filtration; subsequently isolating amoxicillin via crystallization; followed by separating and recovering phenylacetic acid through toluene extraction and back extraction. This separation method enables rapid and efficient isolation of amoxicillin with high production yield, achieving an average crystallization rate of 93.22%. Concurrently, it demonstrates effective separation and recovery of phenylacetic acid while allowing recyclable use of the toluene extractant.

A method of manufacturing a free-standing, sheet-type solid-state electrolyte is provided. The method includes: mixing a sulfide ion conductor-containing material and a non-polar or low-polar binder in a solvent to obtain a slurry composition; disposing the slurry composition onto a planar substrate; spreading the slurry composition on the substrate to obtain a film; calendering the film to densify the film; and subsequently drying the film under vacuum. The binder may be polyisobutylene and may be present in the slurry composition in an amount of up to 10 wt. %, optionally between 1 and 5 wt. %. The sulfide ion conductor-containing material may be a lithium argyrodite having the chemical formula Li6PS5X in which X is Cl, Br, or I. The solvent may be toluene or xylene. The film may have a thickness of between 10 and 200 μm.

The invention belongs to the technical field of separation of products for synthesizing antibiotics by an enzymic method, and particularly relates to a method for separating and recycling an amoxicillin product synthesized by a one-step method based on catalysis of kluyveromyces citricacidophilus beta subunit G385 mutant penicillin acylase. An immobilized penicillin acylase mutant is used for catalyzing penicillin potassium to synthesize amoxicillin in one step, a set of method for separating amoxicillin and phenylacetic acid is developed for an obtained reaction mixture, and the technical scheme mainly comprises the following steps: firstly, separating the immobilized penicillin acylase mutant from a reaction solution through filtration; then, amoxicillin is separated out through crystallization; and then crystallizing, separating and recovering phenylacetic acid through toluene extraction, back extraction and the like. According to the separation method, the amoxicillin can be rapidly and efficiently separated, the yield of the amoxicillin is relatively high, and the average crystallization rate reaches 93.22%; meanwhile, the separation and recovery effects of phenylacetic acid are good; and the extraction agent toluene can be recycled.

The present invention relates to a preparation method of an intelligent self-repairing, flame-retardant and light-resistant water-based polyurethane coating. The method comprises the following steps: preparing a self-made hyperbranched flame retardant and using it in the synthesis of a polyurethane prepolymer; cooling the mixture to 58° C., adding 2,2-dimethylolpropionic acid, reacting the mixture for 1 to 2 hours, adding 1 to 2 parts of a disulfide compound, reacting the mixture for 1 to 2 hours at 60 to 80° C., adding 1 to 2 parts of a hydrogen bonding agent, reacting the mixture for 1 hour at 60 to 80° C., adding 0.5 to 1.5 parts of a coumarin derivative, and reacting the mixture for 60 to 90° C. The mixture was stirred for 1-2 hours, and then spiropyran, diethanol monoisopropanolamine, and 0.01 parts of p-toluenesulfonamide were added, and the mixture was reacted at 50°C for 30 minutes. The temperature was lowered to 40-45°C, and 1-2 parts of triethylamine were added, and the mixture was reacted for 1-2 hours. The mixture was cooled to room temperature, and 60-65 parts of water were added. The mixture was stirred at a speed of 1800-2000 r / min for 0.5-1 hour to obtain an intelligent self-healing, flame-retardant, and light-resistant water-based polyurethane coating. The flame retardancy and self-healing properties of the obtained water-based polyurethane were significantly improved.

The invention discloses a fluralamide moxidectin drop and a preparation method thereof, and relates to the technical field of veterinary drugs. The drop is prepared from the following components in parts by weight: 26 to 26.5 parts of fluralan, 1.32 parts of moxidectin, 0.10 part of butylated hydroxytoluene, 29.5 to 30.5 parts of dimethylacetamide, 19.5 to 20 parts of tetrahydrofuran polyethylene glycol ether, 13 to 13.5 parts of diethyl toluamide, 8.5 to 9.3 parts of acetone and 1.0 to 1.5 parts of ethanol. The invention has the effects of improving the stability, permeability and lasting effect of the medicine.

The invention relates to the technical field of molecular sieves, in particular to a molecular sieve and a preparation method and application thereof in nitrogen separation.The preparation method comprises the steps that a carbonized material and 3-chloropropyltrimethoxysilane are added into methylbenzene, heating is conducted under nitrogen protection till a reflux reaction is conducted for 12-48 h, after the reaction is finished, the room temperature is recovered, filtering is conducted, a product is collected, washing and drying are conducted, and a modified carbonized material is obtained; and adding the modified carbonized material and an ionic liquid into absolute ethyl alcohol, heating to reflux reaction for 12-48 hours, after the reaction is finished, recovering to room temperature, filtering, collecting a product, performing Soxhlet extraction with dichloromethane for 12-48 hours, drying to obtain an immobilized ionic liquid carbonized material, and performing CO2 activation and vapor deposition on the immobilized ionic liquid carbonized material to obtain the molecular sieve. The molecular sieve prepared by the invention has a relatively high specific surface area, and shows excellent performance of selectively adsorbing nitrogen in a methane and nitrogen mixed system.

The invention discloses a functional fracturing fluid directly prepared from flow-back fluid of complex water quality. The fracturing fluid is prepared by directly adding a salt-tolerant polymer and an ion trapping agent into the flow-back fluid. The addition amount of the salt-tolerant polymer accounts for 0.15-0.3% of the total mass of the fracturing fluid, and the addition amount of the ion trapping agent is 100-500ppm. The salt-tolerant polymer is prepared by copolymerization of acrylamide, a salt-tolerant monomer and an allyl quinoline monomer, and the molecular weight of the polymer is 4-15 million. The salt-tolerant monomer is acrylamide polyoxyethylene sodium benzenesulfonate or acrylamide sodium sulfonate. The ion trapping agent is prepared from amino trimethylene phosphonic acid, diethylene triamine penta (methylene phosphonic acid), ethylene glycol bis (2-aminoethyl ether) tetraacetic acid, p-methylphenyl diethanol amine, 2, 3-epoxypropyl trimethyl ammonium chloride, fatty alcohol-polyoxyethylene ether, citric acid and tetrahydrofurfuryl acrylate. The fracturing fluid can be directly prepared from the flow-back fluid, the flow-back fluid does not need to be pretreated, and repeated utilization of the fracturing flow-back fluid is achieved.

The invention discloses an oil field desulfurizer and a preparation method thereof. The preparation method comprises the following steps: dissolving 1, 3-propane sultone in toluene, dropwise adding equimolar 1-methylimidazole under an ice-water bath, and heating to room temperature for reaction after dropwise adding; separating out a product after the reaction is finished, and dropwise adding equimolar concentrated sulfuric acid to obtain imidazole ionic liquid; mixing the imidazole ionic liquid with a catalytic promoter to obtain a catalyst; the preparation method comprises the following steps: adding paraformaldehyde, a triazine compound and a catalyst into a solvent, heating to 50-90 DEG C, controlling a reflux reaction for 6-9 hours, and after the reaction is finished, carrying out reduced pressure distillation to remove the solvent and separate out the catalyst, thereby obtaining the oil field desulfurizer. The desulfurizer is a modified triazine compound with a novel structure, N and lateral branch functional groups on a triazine ring of the desulfurizer can react with hydrogen sulfide, and compared with a conventional triazine desulfurizer, a plurality of desulfurization points are added, so that the sulfur capacity is greatly improved.

The invention belongs to the technical field of polyurethane, and particularly relates to a low-swelling-rate hydrophilic polyurethane sponge composite material as well as a preparation method and application thereof. The low-swelling-rate hydrophilic polyurethane sponge composite material is prepared from a component A and a component B according to the mass ratio of 100: (50-55), and the component A comprises the following raw materials: a foaming agent, wollastonite powder, an antibacterial agent, emulsifying wax and a polyether type cross-linking agent; the component B comprises polyether ester polyol and toluene diisocynate; the polyether type cross-linking agent is prepared by taking triethanolamine as an initiator and carrying out ring-opening polymerization reaction with EO; the polyether ester polyol is prepared by taking polyethylene glycol, diethylene glycol, trimethylolpropane and adipic acid as raw materials through esterification reaction. The hydrophilic polyurethane sponge prepared from the composite material is good in hydrophilicity, high in aperture ratio, fine and smooth in foam hole, low in swelling ratio and excellent in mechanical property.

The invention discloses a power-on viscosity-reducing adhesive composition, a viscosity-reducing adhesive tape and a preparation method of the viscosity-reducing adhesive tape, and relates to the technical field of adhesive materials. The preparation method comprises the following steps: adding polyurethane acrylate and polybutylene adipate into a planetary stirring kettle, stirring, sequentially adding a PEDOT / PSS solution, a nano core-shell material, a dynamic cross-linking agent, hydrogenated rosin tackifying resin, TPU particles and butylated hydroxytoluene, stirring to obtain mixed glue, and carrying out vacuum defoaming to obtain the electrified viscosity-reducing glue composition. Coating a release film with the electrified viscosity-reducing adhesive composition, carrying out UV curing, and attaching the release film on the other side to obtain the electrified viscosity-reducing adhesive tape. The prepared electrified viscosity-reducing adhesive composition and viscosity-reducing adhesive tape have the advantages of being excellent in mechanical property, sensitive in response, remarkable in stripping force difference before and after electrification, stable at high temperature, stable in circulation, resistant to pollution and the like, nondestructive disassembly and reutilization of devices are achieved by regulating and controlling the adhesive force through an electric field, and the electrified viscosity-reducing adhesive composition and viscosity-reducing adhesive tape can be applied to an electric response assembly scene.

The invention relates to the technical field of wastewater treatment, in particular to a multistage composite adsorbent for treating petrochemical wastewater and a preparation method thereof.The preparation method comprises the steps that S1, plant straw powder and 3-aminopropyltriethoxysilane are subjected to a constant-temperature reaction, and aminated plant straw is obtained; s2, carrying out hydrothermal reaction on the aminated plant straw and a cerium nitrate solution to obtain functionalized plant straw; s3, the halloysite nanotubes, glutaraldehyde and the functionalized plant straw are stirred for a reaction, high-temperature carbonization is conducted after the reaction is completed, and composite biochar is obtained; s4, carrying out a reaction on the composite biochar and an amino silane coupling agent to obtain aminated composite biochar; s5, calixarene, toluene diisocynate and the aminated composite biochar are subjected to a reaction, and the multi-stage composite adsorbent is obtained. According to the technical scheme, the comprehensive adsorption capacity and removal efficiency of various organic pollutants in the petrochemical wastewater are improved, and the defect that a traditional adsorbent is poor in selectivity is overcome.

Disclosed in the present invention are a reinforced polyurethane rigid foam material and a preparation method therefor, belonging to the technical field of high polymer materials. The material comprises: 5-10 parts of glass fiber yarn, 40-60 parts of an aromatic polyether polyol, 30-50 parts of an aromatic polyester polyol, 30-50 parts of toluene diisocyanate, 40-60 parts of polymethylene polyphenyl polyisocyanate, 5-10 parts of a flame retardant, 5-15 parts of a foaming agent, 1-5 parts of a catalyst and 1-5 parts of a surfactant. The present invention can achieve continuous production of the reinforced polyurethane rigid foam material and can improve the tensile property of the material by 20% or above and increase the utilization rate of glass fibers by 5% or above. The reinforced polyurethane rigid foam material can be widely applied to the field of liquefied gas storage and transportation.

The present invention relates to the technical field of coatings and discloses a method for preparing an EVA waterproof coating. Activated montmorillonite reacts with toluene diisocyanate to obtain isocyanate-modified montmorillonite. EVA is hydrolyzed under the catalysis of potassium hydroxide to obtain hydroxylated EVA. An epoxy trisiloxane intermediate reacts with terephthalic acid under ring-opening esterification with benzyltriethylammonium chloride to obtain p-hydroxytrisiloxane benzoate. P-hydroxytrisiloxane benzoate, hydroxylated EVA, and isocyanate-modified montmorillonite are cross-linked with toluene diisocyanate under the catalysis of stannous octoate, and a defoamer and a dispersant are added thereto and stirred uniformly to obtain an EVA waterproof coating. The EVA waterproof coating prepared by the present invention has good mechanical properties and waterproof properties.

A method for continuously producing m-xylylenediamine belongs to the technical field of organic synthesis and comprises the following steps: (1) mixing isophthalonitrile, toluene and liquid ammonia according to a mass ratio of 1: (3-5): (13-17) in a nitrogen atmosphere to form a reaction mixture; (2) heating the interior of a reaction bed containing a catalyst to 90-95 DEG C, continuously introducing hydrogen into the reaction bed, introducing the reaction mixture after the pressure intensity of the reaction bed is stable, and carrying out a catalytic hydrogenation reaction to generate a reaction product; and (3) carrying out gas-liquid separation on the reaction product, removing liquid ammonia from the liquid-phase product through an ammonia distillation process, and separating toluene and m-xylylenediamine through a rectification process to obtain m-xylylenediamine. According to the method, isophthalonitrile and hydrogen are used as raw materials, liquid ammonia and methylbenzene are used as reaction solvents, the raw materials and the reaction solvents are heated to 90-95 DEG C under the catalytic action of a catalyst for an exothermic reaction, m-xylylenediamine is generated through the reaction, and the reaction yield is larger than 99%.

The invention relates to the technical field of medicine formulas, in particular to a fluralamide moxidectin composite drop and a preparation process thereof. The invention relates to a fluralan-moxidectin emulsion which is prepared from the following raw materials in percentage by mass: 26 to 30 percent of fluralan, 1.1 to 1.7 percent of moxidectin, 32 to 36 percent of solvent, 0.1 to 0.3 percent of butylated hydroxytoluene, 10 to 16 percent of polymer carrier and the balance of tetrahydrofuran polyethylene glycol ether. The coexisting drug is stabilized through the core-shell structure polymer carrier, phase separation is prevented, a neutral environment is maintained, long-acting stability is ensured, the transdermal absorption rate is optimized, skin irritation is reduced, and the synergistic drug effect is improved. Meanwhile, the slow release period of the medicine is prolonged, the metabolic interference and accumulated toxicity are reduced, and the dissolution efficiency and the skin mildness are both considered.

The invention discloses an OCA (Optical Clear Adhesive) solution for a folding screen protective film, the OCA solution comprises an optical raw adhesive, a curing agent and a first solvent, the raw adhesive is prepared from the following raw materials in parts by mass: 270-283 parts of 2-ethylhexyl acrylate, 50-62 parts of butyl acrylate, 318-330 parts of methyl acrylate, 40-55 parts of acrylic acid, 1-2 parts of gamma-acryloyloxypropyltrimethoxysilane, 2.1-2.3 parts of an initiator and 1250-1350 parts of a second solvent; the second solvent comprises methylbenzene and ethyl acetate. According to the OCA optical glue solution for the folding screen protection film, raw glue is prepared from the isooctyl acrylate, the butyl acrylate, the methyl acrylate, the acrylic acid, the gamma-acryloyloxy propyl trimethoxy silane and the initiator in a toluene and ethyl acetate compounded solvent system, and an OCA glue layer with excellent stripping force, light transmittance, holding power and bending resistance is obtained after curing; and the cost of the raw materials is optimized, and the method is more economical.

The invention relates to the field of fine chemical engineering, and discloses a green process for preparing chloramine T by a continuous flow reactor. The method comprises the following steps: respectively pumping p-toluenesulfonamide, a sodium hydroxide solution and a sodium hypochlorite solution into a micro-channel mixer for instantaneous mixing, and carrying out chlorination reaction in a multi-stage temperature control tubular reaction unit; the concentration of free chlorine is detected on line at an outlet, and the flow rate of a chlorine source is dynamically adjusted through a PID algorithm, so that closed-loop control is realized; the reaction liquid is directly crystallized and separated to obtain the product without alkali wash. The system comprises a base solution and chlorine source conveying subsystem, a micro-channel mixer, a multi-stage reaction unit, an online monitoring module, a central controller and a crystallization unit. The side reaction is inhibited from the source, so that the free chlorine is less than or equal to 0.5 mg / L, the alkali washing step is omitted, the COD (Chemical Oxygen Demand) of the wastewater is reduced by more than 80%, the product purity is more than or equal to 99.5%, and the productivity is improved by 3 times.

The invention discloses a selective ink transfer printing method based on a liquid-like surface. The selective ink transfer printing method comprises the following steps that 1, the surface of a base body is treated through oxygen plasma; step 2, dissolving a reaction monomer in methylbenzene containing saturated water; step 3, placing the substrate subjected to oxygen plasma treatment in the reaction solution in the step 2 to form a PDMS molecular brush; step 4, performing pattern design on the surface of the PDMS molecular brush by adopting a mask process, treating by using an alkali solution, selectively removing the molecular brush in an unprotected area, and restoring the molecular brush to a hydrophilic glass surface; step 5, coating oil-based ink on the surface treated in the step 4 to form a clear pattern; and step 6, enabling the surface of the printing ink with the pattern to be in direct contact with a target substrate, and applying pressure to transfer the printing ink. According to the method, the problems of resolution, ink diffusion control and pattern uniformity of the existing printing technology are solved, and the printing precision and applicability are improved.

The invention provides a controllable construction method of a hard carbon surface carbon layer structure and application thereof, and belongs to the field of new energy materials. The preparation method comprises the following steps: carrying out high-temperature heat treatment on a hard carbon precursor to obtain a hard carbon sample, dissolving coated asphalt in a toluene solution, centrifugally throwing out insoluble substances to obtain a toluene soluble asphalt solution, and drying the toluene soluble asphalt solution to obtain a toluene soluble asphalt component; carrying out mixing-drying treatment on the asphalt component and a hard carbon sample in a liquid phase solution to obtain an asphalt coated hard carbon sample; and performing hydrogen reduction treatment on the obtained asphalt coated sample at low temperature to obtain a hard carbon sample coated with a low-defect-degree surface carbon layer, and then performing instant Joule heat treatment on the hard carbon sample coated with the low-defect-degree surface carbon layer to obtain a high-rate surface carbon layer modified hard carbon sample. The carbon layer constructed in the invention improves the stability of the solid electrolyte membrane in the sodium ion battery, reduces the internal resistance of sodium ion transmission, and promotes the rate property and cycle property of the sodium ion battery.

The invention relates to the field of emulsions for grainy paper coatings, and discloses a preparation method of a water-based environment-friendly emulsion for a grainy paper coating. The preparation method comprises the following steps: S1, preparing an acrylic carbamate modified monomer from hydroxyethyl acrylate, 2, 4-toluene diisocyanate and diethanol amine; and S2, preparing to obtain the emulsion. S3, obtaining the initiator. S4, deionized water, lauryl sodium sulfate, the emulsion and an initiator are subjected to a polymerization reaction, and an emulsion A is obtained. S5, transferring the emulsion A into a degassing kettle, adding tert-butyl hydroperoxide and vitamin C, and performing oxidation-reduction reaction to obtain emulsion B; and S6, carrying out steam degassing on the emulsion B to obtain the water-based environment-friendly emulsion. The water-based environment-friendly emulsion which is good in stability, glossiness, adhesion fastness, water resistance and weather resistance and low in volatile organic compound content can be prepared, and the preparation method is simple, efficient and environmentally friendly and has wide application prospects and market value.

The invention relates to the field of quantum dot materials, in particular to a bismuth-based lead-free perovskite quantum dot material and a preparation method and application thereof. The invention discloses a preparation method of a bismuth-based lead-free perovskite quantum dot material, which is characterized by comprising the following steps of: 1, weighing bismuth salt and salt containing halide ions, adding the bismuth salt and the salt containing halide ions into a good solvent, then adding ionic liquid, and uniformly stirring to obtain a precursor solution; 2, heating the precursor solution, rapidly injecting the precursor solution into an anti-solvent, and violently stirring for 5-15 minutes; and then cooling, precipitating, centrifuging, washing and dispersing in methylbenzene to obtain a quantum dot solution. The bismuth-based lead-free perovskite quantum dot material prepared by the invention has high quantum yield, good stability and excellent photoelectric properties, and can meet the application requirements of various photoelectric devices.

The invention relates to the technical field of functional ceramic materials, and discloses complex-phase gradient isomeric zinc spinel-based composite activated zinc oxide, a preparation method thereof and a ceramic glaze, and the preparation method comprises the following steps: mixing zinc oxide, aluminum oxide, silicon oxide, magnesium oxide and rare earth oxide in proportion to obtain a mixture, adding the mixture and an alkoxy compound into a solvent, and dispersing to form nano precursor slurry; carrying out reduction-oxidation calcination treatment on the obtained nano precursor slurry to obtain a calcined product; and carrying out hydration treatment on the obtained calcined product to obtain the complex-phase gradient isomeric zinc spinel-based composite activated zinc oxide. By implementing the preparation method, the obtained complex-phase gradient isomeric zinc spinel-based composite activated zinc oxide contains a zinc oxide phase and a spinel phase, is low in high-temperature lattice distortion rate and has super wear resistance, and a rare earth element R is introduced, so that the catalytic activity of the zinc oxide is improved, the degradation rate of the zinc oxide to formaldehyde and toluene is increased, and the antibacterial property of the zinc oxide is also improved.

The invention relates to an additive capable of improving oxidation resistance of an ultrathin copper foil and a copper foil produced by the additive. The additive comprises ytterbium ions, butylated hydroxytoluene, polyethylene glycol and a brightener. The additive is simple in formula, the number of contained components is small, the process is easy to control, the additive is added into electrolyte to electrolyze the copper foil, and it can be achieved that the 6-micron ultrathin copper foil is free of oxidation discoloration after being placed for 120 h at the temperature of 85 DEG C and the relative humidity of 85% and free of oxidation discoloration after being baked for 60 min at the temperature of 230 DEG C.

The present invention relates to the field of polyurethane materials and particularly to a temperature-induced color-changing vehicle film and a preparation method therefor. The method of the present invention comprises: firstly, using polyurethane to wrap vanadium dioxide powder to obtain color-changing microcapsules; then using 1,1,1,3,5,5,5-heptamethyltrisiloxane and 3-allyloxy-1,2-propanediol as raw materials to synthesize an organosilicon-modified diol, and enabling trimellitic anhydride to react with toluene diisocyanate to synthesize a dicarboximide compound; enabling the organosilicon-modified diol and the dicarboximide compound to undergo an esterification reaction and a polymerization reaction to obtain an organosilicon-modified imide polyester diol; then mixing the organosilicon-modified imide polyester diol with polytetrahydrofuran ether glycol 2000, and then enabling the mixture to react with toluene diisocyanate to obtain a polyurethane elastomer; and mixing the polyurethane elastomer, the color-changing microcapsules, a silane coupling agent, a plasticizer, an antioxidant, and an ultraviolet light absorber, followed by melt extrusion and blow molding into a film, so as to obtain the temperature-induced color-changing vehicle film.

The invention provides a method for preparing a spinel type catalyst rich in oxygen vacancies under the assistance of magnetization treatment and application of the spinel type catalyst. The synthesis method of the catalyst comprises the following steps: (1) preparing a precursor of the catalyst by adopting a hydrothermal method: putting a metal foam carrier into a mixed solution of metal salt ions such as ferric nitrate, manganous nitrate and cobalt nitrate, adding ammonium fluoride and urea, carrying out hydrothermal reaction, repeating the hydrothermal reaction for several times, and washing and drying to obtain the precursor; and (2) putting the catalyst precursor into a magnetization reactor, putting the magnetization reactor in the center of an alternating magnetic field coil, and carrying out magnetization treatment on the catalyst precursor in an air or oxygen atmosphere to obtain the spinel type catalyst rich in oxygen vacancies. The method is simple in process and low in cost, and the obtained product is uniform in morphology and good in repeatability and has high photo-thermal catalytic oxidation toluene performance. Through a clean, pollution-free and in-situ directional heating electromagnetic induction auxiliary technology, removal of oxygen atoms on the surface of the spinel catalyst is promoted, so that rich oxygen vacancies are introduced into cobalt-manganese spinel, the exchange effect between the catalyst and oxygen molecules is accelerated, and the reaction rate of catalytic oxidation of VOCs is promoted. When the intensity of simulated sunlight is 500 cm <-2 >, the concentration of toluene is 1000 ppm, the air speed is 45000 mL.gcat <-1 >. H <-1 >, the conversion rate of toluene reaches 86% or above, and high-efficiency oxidation of toluene can be realized under the driving of the simulated sunlight.

The invention belongs to the technical field of pharmaceutical analysis, and particularly relates to a method for determining a residual solvent in LXH-2103 by headspace gas chromatography. The determination method comprises the following steps: preparing a blank solution, a reference substance solution and a sample solution, respectively injecting the blank solution, the reference substance solution and the sample solution into a headspace for balancing, injecting the solutions into a gas chromatograph in a headspace sample injection manner, recording a chromatogram, and calculating the content according to a peak area by an external standard method; the residual solvent is absolute methanol, absolute ethyl alcohol, isopropanol, dichloromethane and methylbenzene. The method for determining the residual solvents in the LXH-2103 by using the headspace gas chromatography, provided by the invention, is high in sensitivity, good in repeatability and high in accuracy, and can be used for simultaneously detecting various residual solvents in the LXH-2103, so that the quality of the LXH-2103 is ensured, and the safety of clinical medication is improved.

The invention discloses a coating method and coating equipment for a positive electrode of an all-solid-state battery. The method comprises the steps that S1, raw materials are prepared, specifically, 65-70 parts by weight of high-nickel ternary, 23-28 parts by weight of sulfide electrolyte, 3-6 parts by weight of conductive agent, 3-3.5 parts by weight of PTFE polytetrafluoroethylene emulsion, 55 parts by weight of methylbenzene and 0.4-0.6 part by weight of oleic acid are taken; s2, performing pretreatment, namely performing vacuum drying on the high-nickel ternary material at 120 DEG C for 12 hours, crushing and sieving sulfide electrolyte, performing ball-milling mixing on a conductive agent for 1 hour, diluting PTFE (Polytetrafluoroethylene) emulsion to the concentration of 20%, dehydrating methylbenzene by virtue of a molecular sieve until the content is lower than 10ppm, and pre-dissolving oleic acid in the methylbenzene; the invention relates to the technical field of all-solid-state batteries, which comprises the following steps of: forming a hydrophobic protective layer through a pre-dehydration treatment and oleic acid pre-dissolving technology, inhibiting a sulfide and high-nickel ternary interface reaction, adopting a step-by-step charging strategy, avoiding mechanical damage of an active material, maintaining the integrity of a crystal structure, carrying out gradient dilution and dropwise addition of PTFE (Polytetrafluoroethylene) emulsion, and preventing local micelle aggregation. And the electrode bonding uniformity is improved.