925 results about "Aniline" patented technology

The invention discloses a preparation method and application of a zinc-bromine flow battery positive electrode material, and belongs to the field of zinc-bromine flow batteries. The preparation method comprises the following steps: firstly, cleaning and activating a carbon-based three-dimensional conductive network substrate by adopting plasmas, performing oxygen / argon plasma etching, and performing chemical vapor deposition on carbon to prepare three-dimensional porous carbon; then growing a metal oxide nanocrystalline array on the three-dimensional porous carbon by a hydrothermal method, and carrying out ammonia gas calcination to convert the metal oxide nanocrystalline array into a metal nitride nanocrystalline array; then preparing an electro-deposition solution containing tin bismuth salt and an aniline-bromine source polymerization solution, and constructing Sn-Bi bimetallic nanoparticles and a polyaniline-bromine complex layer on the metal nitride nanocrystalline array / three-dimensional porous carbon precursor through electro-deposition and electro-polymerization in sequence to finally prepare the high-performance zinc-bromine battery positive electrode material. The positive electrode material has high conductivity, excellent Br2 / Br <-> catalytic activity and structural stability, and the coulombic efficiency, the voltage efficiency and the energy efficiency of the battery are remarkably improved.

The invention belongs to the technical field of aerogel, and particularly relates to nylon aerogel for 3D printing as well as a preparation method and application of the nylon aerogel. The preparation method of the aerogel comprises the following steps: (1) adding an aniline monomer and ice micropowder into pre-cooled deionized water to obtain a monomer mixed solution; (2) dropwise adding an initiator into the monomer mixed solution in batches under the stirring condition of not less than 400rpm, and reacting to obtain curved polyaniline; (3) preparing a nylon mixed solution containing curved polyaniline; and (4) freeze-drying to obtain the nylon aerogel for 3D printing. According to the preparation method, an ice crystal template method and a freeze drying method are combined, so that the microstructure of the polyaniline-containing nylon aerogel is adjusted, and the nylon-based aerogel conductive polymer material is prepared. The conductive aerogel material can greatly improve the elongation at break and the conductivity of a polyurethane material, and has a wide application prospect.

The invention relates to a compound containing a thiophene group, a device and equipment. In the structural formula of the compound, R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 are independently selected from hydrogen, halogen, cyano, trifluoromethyl, triphenylamine and derivatives thereof, methoxyl, aryl and derivatives thereof, cyanobiphenyl and naphthyl; the compound can be used for preparing a photovoltaic device and photovoltaic equipment and is used for improving the efficiency and stability of the photovoltaic device.

The invention belongs to the technical field of aerogel, and particularly relates to polyimide aerogel for 3D printing as well as a preparation method and application of the polyimide aerogel. According to the preparation method disclosed by the invention, the polyaniline with a curved surface structure is prepared by taking ice micro powder as a synthesis template of an aniline monomer, and the polyaniline / polyimide composite aerogel is prepared by adopting a polyamide acid in-situ compounding method. The polyaniline with the curved surface structure is a three-dimensional conductive unit, and when the polyaniline is dispersed in a polyimide matrix, the curved surface structures can be in contact with one another, so that an efficient three-dimensional conductive network is constructed in the composite material. The curved surface structure has a relatively large specific surface area, so that a relatively large contact area is formed between polyaniline and a polyimide matrix, stress is favorably transferred from the matrix to a filler, the polyaniline with the curved surface structure is favorably prevented from being agglomerated in the matrix, the polyaniline is more uniformly distributed, and the flexibility of the polyimide aerogel is improved.

The invention belongs to the technical field of aluminum alloy cables, and discloses a high-strength heat-resistant light-weight green aluminum alloy cable which sequentially comprises a silver-aluminum alloy conductive core, a conductor shielding layer, an insulating layer, an insulating shielding layer, a PP filling rope, a non-woven fabric wrapping tape, a steel belt and a heat-resistant flame-retardant waterproof outer sheath layer from inside to outside. The silver-aluminum alloy conductive core comprises the following components in percentage by weight: 0.01 to 0.3 percent of Cu, 0.3 to 0.8 percent of Fe, 0.03 to 0.1 percent of Si, 0.01 to 0.05 percent of Zn, 0.02 to 0.05 percent of Mg, 0.001 to 0.04 percent of B, 0.01 to 0.08 percent of Ag and the balance of Al; the silver and copper microalloying effect is cooperated with the molded line film drawing process, so that the strength and the conductivity of the conductor are improved; and the outer sheath layer takes a polydimethylmethylhydrosiloxane grafted waterproof agent and a 4-vinyl aniline polymer as functional modifiers, and PVC is compounded, so that the cable is endowed with excellent heat-resistant, flame-retardant and waterproof characteristics.

The invention discloses a preparation method and application of a bimetallic sulfide / three-dimensional porous carbon catalyst, and relates to the technical field of electrolyzed water catalysts.The preparation method comprises the following steps that melamine sponge is cleaned, and the clean melamine sponge is obtained; the preparation method comprises the following steps: dissolving metal salt 1 and metal salt 2 in an ethanol aqueous solution, and adding alkali and an aniline monomer to obtain a precursor solution; completely soaking the clean melamine sponge in a precursor solution, carrying out constant-temperature hydrothermal reaction, and sequentially washing and drying to obtain the melamine sponge anchored with bimetal ions; introducing inert gas for protection, and performing high-temperature vulcanization treatment to obtain the three-dimensional porous carbon catalyst embedded with the bimetallic sulfide heterostructure. The catalyst comprises uniformly dispersed bimetallic sulfide nanoparticles and a spongy three-dimensional porous carbon carrier, shows excellent bifunctional catalytic activity and stability when being applied to an electro-catalytic water decomposition reaction, and has a wide application prospect.

The invention relates to the technical field of preparation of N-(2, 4-dinitrophenyl)-4-nitrobenzoyl aniline, in particular to a method for preparing a nitro amide compound by adopting a microreactor. The method for preparing the nitro amide compound comprises the following steps: introducing a sulfuric acid solution of 4-nitro-N-phenylbenzamide and a nitric acid aqueous solution into a microreactor, and reacting to obtain N-(2, 4-dinitrophenyl)-4-nitrobenzamide; the microreactor is provided with at least two reaction modules which are connected in series, and a sulfuric acid solution of 4-nitro-N-phenylbenzamide is divided into at least two strands which are respectively fed into a first reaction module of the microreactor and other reaction modules except the first reaction module; and the nitric acid aqueous solution enters the microreactor in a way of at least one stream. According to the method, the microreactor is used as a reaction carrier, the temperature in the reaction process is controllable, the raw material conversion rate is increased, and the residual amount of an intermediate N-4-nitro-(4-nitrophenyl) benzamide is reduced.

The invention relates to the technical field of hydrogen production, in particular to a method for producing hydrogen by catalyzing methanol steam reforming at a low temperature. The method comprises the steps of raw material preparation, vaporization and preheating, reforming reaction, product post-treatment and the like, the used Pt-Co / N-C catalyst is prepared by taking graphene oxide, aniline, ferric nitrate and the like as raw materials through polymerization, pyrolysis, hydrochloric acid treatment and metal load reduction, a nitrogen-doped carbon carrier and Pt-Co alloy active components are contained, and wrapped Fe3C is retained. The low-temperature high-efficiency hydrogen production is realized, CO generation is inhibited, the catalyst stability is high, the process energy consumption is low, the integration degree is high, and the device is suitable for a distributed hydrogen energy supply scene.

The invention discloses a high-flame-retardant polyurethane insulation board and a preparation method thereof, and belongs to the technical field of polyurethane insulation boards. The high-flame-retardant polyurethane insulation board is prepared from the following components in parts by mass: 90 to 110 parts of polyol, 110 to 130 parts of isocyanate, 80 to 120 parts of an inorganic flame retardant, 30 to 40 parts of a modified flame retardant, 10 to 20 parts of modified polyether polyol, 6 to 10 parts of graphene oxide, 20 to 25 parts of a foaming agent and 0.5 to 1.5 parts of a first catalyst, the polyol comprises polycarbonate diol and polyester diol in a ratio of 1: (2-4); the modified flame retardant is obtained by modifying hydrogen group-terminated siloxane through hexaanilino cyclotriphosphazene; the modified polyether polyol is obtained by modifying polyether polyol through diphenylphosphinic acid ethylene oxide methyl ester. The modified flame retardant and the modified polyether polyol are added into the high-flame-retardancy polyurethane insulation board, so that the dispersity of the flame retardant can be improved, and the uniformity and consistency of the flame retardancy of the polyurethane insulation board are improved.

The cooling crystallization production system comprises a crystallization unit, a product storage tank, a pipeline and a switching unit, the crystallization unit is composed of at least two parallel crystallizers, feeding ports of the crystallizers are connected with a discharging port of a distribution tank, and a discharging port of the distribution tank is connected with a discharging port of the product storage tank. Each crystallizer is a double-pipe heat exchanger, the shell pass of each crystallizer is a material flow path, and the tube pass of each crystallizer is a cold / hot medium flow path; the pipeline and switching unit is configured to selectively enable any crystallizer to be connected into a circulation loop, and in the circulation loop, materials circularly flow in the shell pass of the crystallizer through a circulation pump so as to achieve cooling crystallization. The crystallizer completing crystallization can be selectively switched to a discharging pipeline, and a heating medium is introduced into the tube pass of the crystallizer to melt crystals and then output the crystals into the product storage tank; compared with the prior art, a semi-continuous production mode is constructed, and the production cycle of unit products is shortened.

This invention belongs to the field of vanadium redox flow batteries, specifically relating to a vanadium redox flow battery precursor, a vanadium redox flow battery, and a method for preparing the same. The vanadium redox flow battery precursor of this invention includes a positive electrode electrolyte precursor and a negative electrode electrolyte precursor; the positive electrode electrolyte precursor includes vanadium ions, an inorganic acid, a positive electrode side reaction inhibitor precursor, and a solvent; wherein the positive electrode side reaction inhibitor precursor is aniline; the inorganic acid includes hydrochloric acid; the negative electrode electrolyte precursor includes vanadium ions, an inorganic acid, a negative electrode side reaction inhibitor precursor, and a solvent; wherein the negative electrode side reaction inhibitor precursor is a metal compound; the metal compound is selected from one or more of tin compounds, bismuth compounds, and antimony compounds; the inorganic acid includes hydrochloric acid.

The invention discloses a preparation method of a pyrenyl covalent organic framework material and application of the pyrenyl covalent organic framework material in photocatalytic hydrogen production reaction, and belongs to the field of heterogeneous catalysis. The novel pyrenyl COFs photocatalyst is synthesized by regulating and controlling the quantity of triphenylamine and integrating triphenylamine monomers with different contents into a pyrenyl covalent organic framework (COF) skeleton. The preparation method is simple to operate, mild in reaction condition, short in reaction time and high in repeatability, the obtained pyrenyl COFs have good light capture capacity and photon-generated carrier separation characteristic, electron-hole recombination can be effectively reduced, the excited state service life is prolonged, the reaction efficiency of photocatalytic hydrogen production is improved, and potential application prospects are achieved.

The invention discloses a low-dielectric polyimide film based on a fluorine-containing triphenylmethane unit as well as a preparation method and application of the low-dielectric polyimide film, and the low-dielectric polyimide film is a novel polyimide material FPOPF-6FDA obtained by polymerizing a fluorine-containing triaryl methane diamine monomer and 4, 4 '-(hexafluoroisopropenyl) diphthalic anhydride. The fluorine-containing triarylmethane diamine monomer is preferably 4, 5-diphenyl-1, 3, 5-triazine. According to the invention, 4, 4 '-((4-fluoro-3-phenoxy phenyl) methylene)) bis (2-fluoroaniline) is used, specifically, 4, 4'-diaminotriphenylmethane is used as a functional core, a fluorine-containing group and a large-volume side chain group are introduced, and non-coplanar twisted conformation destroys close packing of molecular chains and increases the chain spacing, so that the effect of a charge transfer complex (CTC) is weakened, and the photoelectric conversion efficiency is improved. And the heat resistance and optical transparency of polyimide are maintained while the dielectric constant of the material is reduced.

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

The invention discloses a carbon dot, hydrogel containing the carbon dot as well as a preparation method and application of the hydrogel, and relates to the technical field of carbon materials. The carbon dot is prepared from the following raw materials: a hydroxyl-containing flavonoid compound and epsilon-polylysine; the carbon dots contain aniline bonds formed by hydroxyl groups of the hydroxyl-containing flavonoid compounds and amino groups of the epsilon-polylysine. The carbon dot shows higher tumor cell killing property and lower normal cell toxicity than the raw material hydroxyl-containing flavonoid compound at the cellular level, can obviously induce immunogenic death of cancer cells and does not induce up-regulation of extracellular matrix collagen, and also has a better effect of regulating a tumor immune microenvironment.

The invention relates to the field of daily chemicals, in particular to a composition for covering white hair, a preparation method of the composition and shampoo. The composition for covering the white hair is prepared from 0.05%-1% of polydihydroxyindole, 0.05%-1% of para-melanin, 0.02%-0.1% of sodium erythorbate, a surfactant with the solid content of 12%-18%, 0.1%-0.2% of an oil-control active ingredient, 0.5%-1.5% of a hair conditioner and the balance water. The polydihydroxyindole and the para-melanin replace aniline substances (such as p-phenylenediamine) in a traditional hair dye, and strong sensitization and potential carcinogenicity are avoided. The polydihydroxyindole is naturally oxidized in the air to form a black substance which is directly attached to white hair; the modified para-melanin has positive charges and small particle size, and is easy to permeate and adsorb on the cuticle of hair, so that the tinting strength is enhanced. Through the synergistic effect of the two components, gradual white hair covering under mild conditions (such as a shampoo environment) is realized instead of one-time strong dyeing.

The application belongs to the technical field of oil and gas field development, and particularly relates to a temperature-resistant and salt-resistant foaming agent for drilling and a synthesis method thereof. The synthesis method is as follows: diphenylamine-4-sodium sulfonate, isopropyl alcohol and 1,3-dibromopropane are added into a four-necked flask, stirred, heated and refluxed to obtain a mixed solution; 90-95wt% of isopropyl alcohol in the mixed solution is distilled off under reduced pressure, distilled water is added, and the whole is transferred into a separatory funnel, fully shaken, separated, and a small amount of oil phase is discarded; the pH is adjusted to 2-3, a precipitate is separated out, suction filtration is performed, and an intermediate is obtained; the intermediate is transferred into a four-necked flask with isopropyl alcohol, sodium bromoethyl sulfonate is added, the pH is adjusted to 7-8, and the product solution is obtained by heating and refluxing; the product is obtained by vacuum distillation, recrystallization and drying. The foaming agent for drilling has the advantages of good temperature resistance, salt resistance and salinity resistance.

The application discloses a preparation method of fenbendazole impurity C, wherein the fenbendazole impurity C is impurity C in the European Pharmacopoeia (EP), and the compound has a molecular formula of C 27 H 23 N5O2S2, the application takes 2-nitro-5-phenylmercaptoaniline as raw material, realizes the preparation of the fenbendazole impurity C through a four-step reaction in the following route, the preparation method of the impurity compound is easy to obtain raw materials, simple to operate, reasonable in process design, relatively mild in reaction condition, high in yield, and can realize industrial production, the prepared fenbendazole impurity C can be used as a control sample for qualitative and quantitative research of impurity C in fenbendazole quality research, the content of the fenbendazole impurity C is controlled, so that the quality of the crude drug is ensured.

The application provides a method for synthesizing triaminotriphenylmethane, which does not need to use a solvent, uses N,N'-dibenzylaniline and trialkoxymethane as synthetic raw materials, and makes N,N'-dibenzylaniline and trialkoxymethane undergo a Friedel-Crafts alkylation reaction, so as to avoid the generation of 2,4',4"-triaminotriphenylmethane isomers in a traditional synthesis method by using the steric effect of two benzyl protective groups, thereby obtaining 4,4',4"-tri(N,N'-dibenzylaminophenyl)methane with high selectivity. 4,4',4"-tri(N,N'-dibenzylaminophenyl)methane is further subjected to a debenzylation reaction under neutral conditions to form triaminotriphenylmethane. According to the chemical structural formula of the target product, the benzyl group as the protective group of the amino group is reduced under a neutral environment, and the benzyl group is removed, and the formed byproduct is only toluene, which not only ensures the high yield and high selectivity of the target product, but also is very beneficial to obtaining high-purity 4,4',4"-triaminotriphenylmethane, and conforms to the principle of green chemistry.

This invention provides a method for preparing and applying a highly insecticidal diamide compound, relating to the chemical and pesticide fields. The method includes: reacting 2-fluoro-3-nitrobenzoic acid with thionyl chloride (a chlorinating agent) and dimethylformamide (a catalyst) to obtain compound A; condensing compound A with 2-trifluoromethyl-4-heptafluoroisopropyl-6-bromoaniline amide to obtain compound B; reducing compound B to obtain compound C; and, during the reaction under a hydrogen atmosphere, determining the reaction temperature and hydrogen flow rate in each hydrogenation reaction zone based on the concentration of compound B; reacting compound C with paraformaldehyde to obtain compound D; chlorinating 3-chloro-4-fluorobenzoic acid with thionyl chloride (a chlorinating agent) and dimethylformamide (a catalyst) to obtain compound E; and amide condensing compound E with compound D to obtain the novel diamide compound of this invention. The diamide compound of this invention exhibits excellent insecticidal effects when used in pesticide compositions.

The application discloses a clay stabilizer and a preparation method thereof, and belongs to the technical field of oil field additives, and comprises the following steps: dissolving a first monomer and 2,3-epoxypropyl trimethyl ammonium chloride in a solvent, or respectively dissolving the first monomer and 2,3-epoxypropyl trimethyl ammonium chloride in a solvent to configure a solution, then dropping the 2,3-epoxypropyl trimethyl ammonium chloride solution into the first monomer solution; then, reaction is carried out to obtain a reaction liquid; after the reaction is completed, the reaction liquid is separated and purified to obtain the clay stabilizer; the first monomer is an aromatic monobasic amine, the aromatic monobasic amine is one of aniline, p-aminotoluene and phenethylamine, the number of active hydrogens on an amine group in the first monomer is n, and the molar ratio of the first monomer to the 2,3-epoxypropyl trimethyl ammonium chloride is 1:0.9n-1.1n. The clay stabilizer has good shale inhibition effect, and the preparation method is simple and easy to popularize.

This invention discloses a water-washable via-plugging resin composition and its preparation method, as well as a circuit board and its processing method. The water-washable via-plugging resin composition comprises a polymeric resin and an inorganic filler. The polymeric resin includes a structural resin and a reinforcing resin. The structural resin comprises a polymer having repeating units derived from at least one of vinyl alcohol and vinylpyrrolidone. The reinforcing resin comprises an alkali-soluble resin. The surface of the inorganic filler is modified with at least one functional group selected from the group consisting of aniline, alkyl, nitrogen-containing functional groups on the main chain or branches, and double-bonded functional groups. This invention achieves rigid protection of the circuit and via edges during the machining stage, effectively preventing burrs and circuit lifting defects, while ensuring rapid, gentle, and zero-residue peeling during the film removal stage.

This invention relates to a method for preparing and applying polyamides from a monomer containing 7-methyldibenzo[c,g]carbazole and triphenylamine: 4-({9-[(4-aminophenyl)(4-methoxyphenyl)amino]-7-methyldibenzo[c,g]carbazole-5-yl}(4-methoxyphenyl)amino)aniline. To address the problems of low solubility, difficulty in film formation, poor cycling stability, narrow color change range, and limited functionality in polyamide materials, this invention constructs two triphenylamine groups on 7-methyldibenzo[c,g]carbazole and introduces a methoxy group onto the triphenylamine to increase the polymer's solubility and stability. The polymer of this invention exhibits excellent electrochromic properties, including excellent cycling stability, fast switching time, and high optical contrast. Furthermore, to address the material's multifunctionality, a naphthalene unit is added to the molecular structure, resulting in a polymer with fluorescent emission. This invention can be applied to displays, rearview mirrors, camouflage applications, and the fluorescence detection of p-trinitrophenol.

The application relates to a nitrogen-containing organic compound, a perovskite solar cell and a preparation method thereof and an electric device. The structure of the nitrogen-containing organic compound is shown in the figure; the structure of Ar is shown in the figure; the structure of L1 is shown in the figure; the N atom in formula (III) is connected with L2; L2 is selected from one of C2-C8 alkylene, phenylene, naphthylene and biphenylene; L3-L4 are independently selected from one of a bond, a single bond, O, S and -C(R7)2-; R1 is selected from one of phosphonic acid, carboxylic acid and cyanophosphonic acid; R2 is selected from one of phenyl, substituted phenyl, pyridyl, anilino and benzoyl; R7 is selected from one of hydrogen and C1-C4 alkyl; m, n and p are independently selected from integers of 0-3, and q is selected from integers of 0-4. The anchoring ability, carrier transport ability and defect passivation ability of the nitrogen-containing organic compound are high, and the stability under the action of light and heat is high.

The present invention belongs to the technical field of pesticides, and specifically relates to diphenylamine compounds and the use thereof. The compounds are as shown in general formula I, wherein R1, R3, X2, X3 and X5 each independently represent hydrogen, halogen, nitro, cyano, etc.; R2 represents haloalkyl; R4 represents nitro or haloalkyl; X1 represents halogen; and X4 represents haloalkyl. The compounds have excellent control effect on pests such as mites.

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

To provide a fiber-reinforced composite material that possesses excellent impact resistance and tensile properties, and a molding material for obtaining the same. [Solution] A molding material comprising an epoxy resin composition containing the following components [A] and [B], and carbon fibers satisfying the following condition [a]. [A]: Bifunctional aniline epoxy resin [B]: Aliphatic amine curing agent [a]: Surface specific oxygen concentration O / C is 0.02 or higher and less than 0.08.

The invention discloses a microneedle electrical stimulation carrier and a preparation method and application thereof. The microneedle electrical stimulation carrier is prepared by compounding polyvinylpyrrolidone, polyaniline and polydimethylsiloxane, and the specific process comprises the following steps: mixing and dissolving polyvinylpyrrolidone and deionized water according to a specific ratio, adding aniline and ferric trichloride, stirring and dialyzing to obtain a mixed solution; and pouring the solution into a microneedle mold, drying to form a film, implanting a silver wire, covering with a polydimethylsiloxane solution, and drying again to form a complete microneedle electrical stimulation carrier. By optimizing the proportion of all the components, particularly controlling the mass ratio of polyvinylpyrrolidone to deionized water to be 1: 15 and the mass ratio of aniline to a polyvinylpyrrolidone solution to be 1: 30, the prepared microneedle carrier has good flexibility, moderate solution viscosity, excellent conductivity and reliable structural integrity; accurate and minimally invasive cranial nerve electrical stimulation can be realized, and the method is suitable for the field of cranial nerve treatment and regulation.

The application discloses a preparation method of an aluminum shielding tape surface conductive self-repairing coating. First, a clean aluminum shielding tape surface is obtained through an in-situ reduction / etching pretreatment method based on an aluminum salt / fluoride salt compound solution; second, a conductive / self-repairing dual-effect enhancer is prepared and introduced into a conductive / self-repairing coating synthesized by polyether amine, diisocyanate, a multiple active amine compound, p-xylene glycol and aniline; finally, the solid content of the coating is adjusted and sprayed on the clean aluminum shielding tape surface to obtain the conductive self-repairing coating. The application converts the Al2O3 film on the aluminum surface into a new substance Al, simultaneously constructs a regular porous structure, increases the bonding strength of the film layer, improves the adaptability and self-repairing efficiency of the coating in cable manufacturing and subsequent operation through the construction of a coating with multiple dynamic hydrogen bonds and imine bond synergistic effect, and realizes good conductive enhancement effect and rapid thermal self-repairing purpose of the coating by using isocyanate modified carbon nanotubes as the enhancer.