98 results about "Polyaniline" patented technology

This invention discloses a method and sensor for adiponectin detection using a polyaniline and polyacrylic acid-modified wire mesh carbon electrode, relating to the field of adiponectin detection technology. The method involves electrochemically activating the wire mesh carbon electrode, electropolymerizing it to form a polyaniline-polyacrylic acid composite modification layer, immobilizing adiponectin monoclonal antibody after activation with N-hydroxysuccinimide and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide, blocking the antibody with bovine serum albumin, and reacting it with a serum sample. The adiponectin concentration is determined based on the peak potential shift and peak current change. This invention simultaneously achieves both conductive transport and antibody immobilization, reduces non-specific adsorption and serum interference, and improves detection sensitivity, repeatability, and quantitative accuracy.

This invention relates to the field of lithium-ion battery technology, specifically to a silicon-carbon material, its preparation method, and its application. The silicon-carbon material includes a core and a coating layer covering at least a portion of the surface of the core. The core includes nano-silicon material. The coating layer includes a flexible conductive polymer layer and a carbon layer existing between the core and the flexible conductive polymer layer. The flexible conductive polymer layer includes a conductive polymer having a conjugated structure. The conductive polymer includes at least one of polyaniline, polypyrrole, polyacetylene, polythiophene, polyquinoline, polyfluorene, polybenzothiadiazole, and poly(p-phenylenevinylene). The mass ratio of the conductive polymer to the total mass of the carbon layer and the core is (0.05-0.2):1. This invention, by constructing a shell structure with a "carbon layer-flexible coating layer" on the core, enables the silicon-carbon material with this core-shell structure to solve the problems of volume expansion, poor conductivity, and SEI layer instability of silicon materials in lithium-ion batteries.

This invention discloses a method for preparing a polyaniline-titanium dioxide nanotube array composite electrode, comprising the following steps: (1) anodizing a titanium sheet to obtain a titanium dioxide nanotube array; (2) preparing a polyaniline solution through a polymerization reaction; (3) loading the polyaniline solution onto the surface of the titanium dioxide nanotube array through dip-coating, and drying to obtain the polyaniline-titanium dioxide nanotube array composite electrode. The preparation method of this invention can form nanotube clusters, strengthening the bonding force between the nanotubes and the substrate, and the formed nanotubes are more regular; moreover, the prepared nanotube array composite electrode can significantly improve the electrochemical and mechanical stability of polyaniline, thereby obtaining a larger capacitance and long-term charge-discharge cycle stability, and can also improve the conductivity of the TiO2 nanotube array.

The present application relates to the technical field of buoyancy material, and particularly relates to a low-density hydrophobic buoyancy material and a preparation method thereof. The low-density hydrophobic buoyancy material comprises the following components in parts by weight: 50-60 parts of epoxy resin, 35-45 parts of polyurethane modified graphene oxide-hollow glass microsphere composite material, 15-25 parts of polyaniline, 8-12 parts of short carbon fiber, 4-8 parts of diluent and 1-3 parts of curing agent. The low-density hydrophobic buoyancy material has the characteristics of low density and water absorption, excellent bulk modulus and compression strength, and good weather resistance. The preparation method of the low-density hydrophobic buoyancy material is simple in process and easy to control in operation, is conducive to industrialized mass production, and the prepared low-density hydrophobic buoyancy material is stable in quality and superior in comprehensive performance.

This invention discloses a hydrophobic electrode made of polyaniline / carbon nanotubes / silver nanowires, its preparation process, and its application. The hydrophobic electrode is prepared from polyaniline, carbon nanotubes, and silver nanowires. In this hydrophobic electrode, silver nanowires are uniformly dispersed in the material, forming a relatively complete conductive network; carbon nanotubes are wound around the surface of polyaniline, forming micro- and nano-scale protrusions, while also being distributed throughout the conductive network of silver nanowires and in contact with them; carbon nanotubes are wrapped and attached to the surface of polyaniline, dispersed throughout the composite material. This invention uses a mixture of polyaniline and carbon nanotubes before incorporating silver nanowires. To enhance hydrophobicity, the composite material undergoes high-temperature heating treatment, resulting in a low surface energy and a micro- and nano-rough structure. This invention involves fewer chemical reagents, has a simple preparation process, good safety, short preparation time, does not produce toxic or polluting gases, and possesses certain anti-corrosion properties.

A method for preparing magnetic lignin-carbon composite materials for electromagnetic shielding belongs to the field of biomass carbon-based electromagnetic functional composite material preparation technology. The method involves in-situ polymerization to coat lignin powder with a polymer-based magnetic particle inducer layer such as polyaniline to obtain an intermediate; subsequently, a uniform and stable loading of Fe, Co, and Ni magnetic particles is achieved through in-situ growth of MOF particles or metal salt solution modification and impregnation processes; finally, high-temperature carbonization yields magnetic lignin-carbon. This invention effectively solves the technical problems of easy aggregation of magnetic particles and weak interfacial bonding by utilizing the abundant active sites provided by the inducer layer, enabling the resulting composite material to possess both the electrical conductivity loss of carbon-based materials and the hysteresis loss of magnetic particles, forming a highly efficient magnetic-electric synergistic loss mechanism. The magnetic lignin-carbon of this invention achieves an average shielding effectiveness of up to 77.5 dB in the 2-18 GHz band, showing broad application prospects in fields such as electromagnetic protection of electronic equipment and military stealth.

A mixture of methylene diphenylamine isomers and polymethylene polyaniline is prepared with a controllable ratio of methylene diphenylamine isomers. Aniline and formaldehyde are reacted to produce N,N'-diphenylmethylenediamine (acetalamine), which is then partially rearranged in the presence of a heterogeneous catalyst to a mixture of aminobenzylaniline and methylene diphenylamine isomers. Further rearrangement is performed in the presence of a homogeneous catalyst to convert the remaining aminobenzylaniline isomers to methylene diphenylamine and polymethylene polyaniline.

The present invention relates to the electrochemical detection of an analyte by capacitance spectroscopy using a redox active polymer-coated electrode such as a polyaniline-coated electrode.

This invention discloses a modified continuous carbon fiber, a method for in-situ polymerization modification of aniline on the surface of continuous carbon fiber, and a carbon fiber reinforced resin composite material. The modified continuous carbon fiber provided by this invention includes continuous carbon fiber and a polyaniline layer in-situ grown on the surface of the continuous carbon fiber. It is prepared by the following process: the continuous carbon fiber is sequentially oxidized, followed by in-situ polymerization in a polymerization system containing aniline monomers and an oxidant, and finally washed and dried to obtain the modified continuous carbon fiber. This invention, through a continuous process of "surface activation-in-situ polymerization-washing, drying-sizing," uniformly coats the surface of the continuous carbon fiber with a controllable thickness of aniline polymer layer, significantly improving the surface polarity and roughness of the continuous carbon fiber and enhancing its interfacial bonding performance with the resin. The above modification method is adaptable to continuous production lines and can effectively enhance the interfacial properties of composite materials, possessing good prospects for high-end applications.

This invention discloses a molybdenum phosphide quantum dot-embedded polyaniline-derived hollow sphere hard carbon composite material and its preparation method. The preparation method includes the following steps: (1) preparing polyaniline hollow spheres using aniline, hydrogen peroxide, anhydrous ferric chloride, and phosphoric acid aqueous solution as raw materials via a hydrothermal method; (2) immersing the polyaniline hollow spheres in concentrated hydrochloric acid, drying them, and then performing a secondary hydrothermal treatment with ammonium molybdate tetrahydrate and ammonium dihydrogen phosphate to obtain a precursor; (3) further carbonizing and phosphating the precursor with sodium hypophosphite monohydrate to obtain the molybdenum phosphide quantum dot-embedded polyaniline-derived hollow sphere hard carbon composite material. In this composite material, molybdenum phosphide is embedded in the hard carbon wall of polyaniline hollow spheres with a diameter of 200-300 nm in the form of 2-3 nm quantum dots, accounting for approximately 20-25 wt% by mass. The composite material provided by this invention can be used as an electrode material, and the potassium-ion batteries prepared from it have high specific capacity, good cycle stability, and excellent rate performance. Furthermore, the method provided by this invention has the advantages of simple process, low cost, and large-scale production capability.

The application relates to the technical field of composite materials, in particular to a high-conductivity thermosetting resin-based composite material and a preparation method thereof, which contains the following components in parts by weight: 50-80 parts of epoxy resin, 10-30 parts of conductive carbon nanotubes, 20-40 parts of nano silver particles, 10-20 parts of functionalized polyurethane prepolymer, 5-15 parts of polyamine curing agent, 2-8 parts of organic silane coupling agent, 5-15 parts of graphene nanosheet, 5-15 parts of aluminum borate whisker, 5-15 parts of barium titanate nanoparticles, 2-10 parts of conductive polymer microspheres, 1-5 parts of nano zinc oxide; wherein the conductive polymer microspheres comprise a core composed of polyaniline or polypyrrole, and polyurethane polymer or polyacrylate polymer wrapped outside the core; the core surface is modified by nano silver particles and gamma-aminopropyl triethoxysilane; the conductive polymer microspheres are used for providing a long-range conductive path, the nano silver particles are used for providing short-range conductive connection, and the conductive polymer microspheres and the nano silver particles form a multi-level conductive network.

This invention relates to the field of automotive reinforcement plate technology, specifically to a corrosion-resistant, high-rigidity right rear shock absorber mounting reinforcement plate and its preparation method. The plate comprises the following raw materials by weight: 100 parts matrix alloy powder, 8-12 parts additive A, 5-9 parts additive B, 3-5 parts graphite powder, 2-3 parts zinc stearate, 3-4 parts polyvinyl alcohol, 0.4-0.6 parts graphite carbon powder, and 0.8-1.5 parts electrolytic copper powder. In this invention, additive A is prepared as a composite additive through a zirconium precursor mixture and a magnesium precursor mixture, forming a uniformly dispersed zirconium-magnesium composite ceramic phase in the iron-based alloy matrix. This effectively refines the alloy grains, strengthens grain boundaries, and improves the stiffness and mechanical strength of the reinforcement plate. Additive B uses a potassium fluorotitanate and cerium nitrate composite treatment solution as its core, combined with polyaniline and sulfosalicylic acid for in-situ film formation, optimizing the sintering interface bonding force and effectively improving corrosion resistance life under salt spray conditions.

The application discloses a flexible lithium manganate positive pole piece and a preparation method, and belongs to the technical field of lithium ion batteries. The carbon nanofiber membrane with polystyrene sulfonate grafted on the surface and the lithium manganate particles with polystyrene sulfonate adsorbed on the surface are assembled into a filter cake layer in close contact through vacuum filtration, then aniline solution slowly permeates through the filter cake layer and is adsorbed under the condition of no oxidant, so that the aniline monomers are uniformly adsorbed on the polystyrene sulfonate template to form a monomer reaction layer with uniform thickness, and in-situ limited polymerization is carried out, after polymerization and drying, the obtained composite membrane is subjected to gradient heating and hot pressing treatment, rearrangement of polyaniline molecular chains and further compaction at the interface between the carbon fiber and the lithium manganate are realized, and the flexible self-supporting positive pole piece with a positive active film layer free of metal current collectors, a three-dimensional conductive network and a relatively stable conductive state is obtained. The application is suitable for the fields of flexible lithium ion batteries, wearable electronic devices and solid-state lithium batteries.

The present application relates to the technical field of water-based paint, in particular to a kind of polyaniline nano composite water-based epoxy heavy-duty anticorrosive paint and preparation method thereof, comprising: component A and component B, the component A includes water-based epoxy resin, film forming aid, dispersing agent, defoaming agent, polyaniline modified nano functional material, sheet filler, wetting and leveling agent, corrosion inhibitor, low shear thickening agent and medium shear thickening agent;The component B is water-based curing agent.The coating can solve the problem of environmental pollution emission in the coating process, and can also solve the hidden danger of safety, while having the characteristics of low density, high solid content, low paint consumption, high coating rate, fast surface drying time, high anti-sagging performance, etc., and the technical performance parameters can meet the protection requirements of C4, C5 coating standard.

The application discloses a production method of a BOPP matte type electrostatic adsorption film, and the electrostatic adsorption film comprises a matte treatment layer, an electrostatic adsorption layer, a BOPP base layer, an anti-fingerprint layer and a self-repairing layer; the matte treatment layer is composed of polymethyl methacrylate, silica matt, polystyrene, acrylic ester copolymer, antistatic agent, ultraviolet absorber and lubricant; the electrostatic adsorption layer is composed of PA6, polyvinyl alcohol, carbon black nanoparticles, polyaniline, surfactant and coupling agent; and the BOPP base layer is composed of isotactic polypropylene, atactic polypropylene, acrylonitrile-butadiene-styrene copolymer, nano titanium dioxide, maleic anhydride grafted polypropylene and ethylene-octene copolymer. The BOPP film with good matte effect and electrostatic adsorption can be prepared.

The application discloses a kind of phase change microcapsule-MXene-modified polyacrylate fabric coating and its preparation method and application, belong to fabric coating technical field, including the following steps: MXene dispersion liquid and phosphocholine modified polyacrylate emulsion are mixed, then octadecane polystyrene-polyaniline microcapsule dispersion liquid is added, mixed uniformly, to obtain composite coating slurry;Composite coating slurry is deposited on the surface of fabric using vacuum filtration process, and is dried to obtain phase change microcapsule-MXene-modified polyacrylate fabric coating.The fabric coating preparation method provided by the application is simple and efficient, and the coated fabric is applied in the field of intelligent wearable devices, which can simultaneously realize the multiple responses of conductivity, humidity and thermal management function, and has wide application value.

The application provides a sensor with antioxidant and antifouling properties and a preparation method and application thereof, and belongs to the technical field of marine chemistry. The sensor takes a glassy carbon electrode (GC) as a substrate, adopts polyaniline as a solid contact layer, and takes a calcium ion selective membrane (ISM) as a detection core. The innovation of the sensor is that a fucoidan-based functional polypeptide (PFp) is modified on the ISM to construct an antifouling layer. The PFp layer forms a triple synergistic defense mechanism of "anti-adhesion-sterilization-antioxidation". Experiments prove that the sensor can effectively inhibit the adhesion and colonization of bacteria such as escherichia coli and staphylococcus aureus and chlorella, and significantly slow down the oxidative decay of the sensing membrane. In addition, when the sensor is used for calcium ion detection in actual seawater, it exhibits excellent long-term stability and high precision, and provides an innovative strategy for continuous in-situ monitoring in complex media.

This invention belongs to the field of battery technology and provides a negative electrode sheet, its preparation method, and a battery. The negative electrode sheet includes a negative electrode current collector and a negative electrode active layer disposed on at least one side of the negative electrode current collector. The negative electrode active layer includes a negative electrode active material and a negative electrode binder. The negative electrode active material includes silicon-oxygen nanoparticles with a coating layer, and the coating layer includes polyaniline and a conductive agent. The negative electrode binder includes a conductive polymer, and the conductive polymer includes a PEDOT-PAA composite. By synergistically improving the negative electrode sheet based on silicon-oxygen negative electrode materials through multi-component synergistic improvement, the problems of severe volume expansion and low initial coulombic efficiency of silicon-oxygen negative electrodes can be solved simultaneously. At the same time, the cycle stability and rate performance of the battery can be improved, thereby supporting applications such as power batteries and energy storage devices with high requirements for energy density and lifespan.

The present application relates to the technical field of paint, and particularly discloses a high-adhesion-strength bionic antifouling paint composition and a preparation method thereof, which comprises an adhesion agent and an antifouling agent, and the adhesion agent and the antifouling agent are sprayed in sequence; wherein the adhesion agent comprises a hyperbranched polymer, the hyperbranched polymer takes pentaerythritol tetraacrylate as a main body, and is sequentially grafted with polyethylene glycol diacrylate and amino-terminated polyethylene glycol; the antifouling agent component contains epoxy resin, polyetherimide, silicone-modified polyimide, sea urchin-shaped amino-terminated silicone filler, polyaniline and a curing agent. The present application can make the antifouling layer formed by the antifouling agent better adhere to the surface of the ship body through the mechanism of the adhesion agent that is accelerated to coagulate when encountering water; the antifouling layer reduces the adhesion of marine organisms with extremely low surface energy and bionic mechanism, and at the same time, protects the adhesion base material layer formed by the adhesion agent with good toughness and excellent stability, so as to give the ship body excellent antifouling effect and maintain long-acting antifouling performance.

The application provides a modified nickel-cobalt-manganese lithium manganate positive electrode material and a preparation method and application thereof, and relates to the technical field of battery materials.The modified nickel-cobalt-manganese lithium manganate positive electrode material comprises NCM@IPDI and a polyaniline layer coated on the surface of the NCM@IPDI, wherein the NCM@IPDI comprises a nickel-cobalt-manganese lithium manganate positive electrode material and an isophorone diisocyanate layer grafted on the surface of the nickel-cobalt-manganese lithium manganate positive electrode material.The modified nickel-cobalt-manganese lithium manganate positive electrode material has double protective layers of an organic small molecule (namely isophorone diisocyanate) and a conductive polymer (namely polyaniline), can effectively inhibit the side reaction of the positive electrode material and electrolyte, reduce the dissolution of metal ions, improve the electronic transmission efficiency, and fundamentally improve the energy density and cycle life of a lithium battery.

The application discloses a kind of lithium battery conductive slurry and its production process, first water-based polymer and deionized water are sheared at low temperature condition at high speed, form uniform stable solution, then add conductive particle, defoaming agent, dispersing agent and thickener, so that each component is uniformly mixed, and lithium battery conductive slurry is prepared.The weight ratio of water-based polymer, deionized water, conductive particle, defoaming agent, dispersing agent and thickener is 20-30:120-150:35-55:0.2-0.5:0.4-0.6:0.2-0.4.Water-based polymer molecular chain contains catechol group structure, and the catechol group structure on it can form coordination bond, hydrogen bond and other various forces, so that water-based polymer can be firmly adhered as binder to different substrates.The polyaniline coating layer formed by in-situ polymerization on the surface of copper-silver core-shell powder can reduce the direct contact of high surface energy metal powder, prevent hard agglomeration, and be beneficial to uniform dispersion.

The application discloses a kind of SiNSs@Cu@PANi nanosphere structure composite material and preparation method thereof, the composite material is the nanosphere of particle size in 50~200 nm, the nanosphere is by polyaniline coating layer and copper nanoparticle modified nanoscale silicon ball wrapped in coating layer constitute.The method is using the photoelectric effect of semiconductor silicon simultaneously realizes the load of copper nanoparticle and the coating of polyaniline coating layer.Semiconductor silicon is excited to generate photoelectric effect in material synthesis process, excitation photo-generated hole and photo-generated electron separation.Photo-generated hole will oxidize aniline monomer adsorbed to the surface of nanosilicon ball, and in-situ polymerization of aniline monomer on the surface of nanoscale silicon ball is initiated, to realize in-situ coating of polyaniline coating for nanosilicon ball;Photo-generated electron promotes copper ion metal-assisted chemical etching reaction on silicon, and enhances the combination of copper nanoparticle and nanosilicon ball.The application has the advantages of simple method, environment-friendly, etc., and wide application prospect.

Provided herein are improved lithium-ion battery cathodes comprising intrinsically conductive polymers (ICPs), such as polyaniline dinonylnaphthalene sulfonic acid (PANI-DNNSA). Lithium-ion battery cathodes utilizing intrinsically conductive polymers, such as compared to battery cathodes prepared using conventional non-conductive polymers, can exhibit higher electrical conductivity and charge density.

A mixture of methylenedianiline isomers and polymethylenepolyaniline is produced at a controlled ratio of methylenedianiline isomers. Aniline and formaldehyde are reacted to produce N,N'-diphenylmethylene diamine (aldolamine), which is then partially rearranged in the presence of a Lewis acid-modified clay catalyst into a mixture of aminobenzylaniline isomers and methylenedianiline isomers. Further rearrangement is performed in the presence of a homogeneous catalyst to convert remaining aminobenzylaniline isomers to methylenedianiline and polymethylenepolyaniline.

This invention discloses the fabrication of a bidirectional hydrogen-bonded molecular mirror (BHAM) fabric sensor and its application in an early renal cell carcinoma screening system. In this BHAM fabric, the amino group of polydopamine (PDA) is locked and stabilized in the all-trans conformation of polyvinylidene fluoride (PVDF) through inward hydrogen bonds, while its hydroxyl groups promote π-π conjugation of the polyaniline (PANI) gas-sensitive sensing shell through outward hydrogen bonds. This utilizes the delocalized π electrons of PANI to in-situ shield the oriented dipole moments in PVDF, simultaneously enhancing ammonia acceptor function, piezoelectric conversion capability, and active gas sensing response performance. Integrating the BHAM fabric into a respiratory detection device and combining it with a machine learning model to construct an active early renal cell carcinoma screening system enables diagnosis of healthy individuals and renal cell carcinoma patients, as well as dynamic assessment of postoperative recovery. This invention achieves synergistic enhancement of multimodal bioelectronic performance through molecular engineering, providing an efficient and non-invasive solution for renal cell carcinoma diagnosis.

The application belongs to the field of solid waste resource utilization and electrochemical energy storage technology, and more particularly relates to a solid electrolyte based on waste cement paste as well as a preparation method and application thereof. Through directional conversion reaction between calcium-silicon-aluminum hydration phase in waste cement paste and zinc sulfate solution, a gypsum-alkali zinc sulfate composite phase (ZnCP composite material) with a layered crystal structure is in-situ constructed, and a collaborative breakthrough of high-value recycling of waste resources and development of high-performance solid electrolyte is realized. The structure-performance synergistic mechanism of the ZnCP composite material makes the solid electrolyte provided by the application maintain excellent electrochemical stability in a wide temperature range of-20-60 DEG C, the Zn / / polyaniline full battery assembled has a cycle life of more than 420 times, and the zinc / / zinc symmetric battery is stably operated for more than 1500 hours without dendrite and hydrogen evolution.

Disclosed herein are artificial solid electrolyte interphase (ASEI) or protective film compositions that include: one or more polymers, where the one or more polymers are selected from poly vinylidene fluoride (PVDF), poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF- HFP), polyaniline (PAN), PEG-based polymers, poly(ethylene glycol) methyl ether acrylate polymers, poly(ethylene oxide) (PEO), and poly(ethylene glycol) methyl ether acrylate; one or more inorganic lithium salts, where the one or more inorganic lithium salts are selected from LiTFSI, LiFSI, LiCIO4, LiF, and LiNO3; one or more initiators, where the initiators are selected from photo initiators, thermal initiators, and mixtures thereof; one or more particles, where the one or more particles are selected from Li6.4La3Zr1.4Ta0.6O12 and Li6.4+xAxLa3Zr16O12, where A is selected from Ga, Al, and Fe, and where x is a real number from 0 to 1; and one or more additives.