45 results about "Polyaniline nanowires" patented technology

A preparation method of polyaniline nanometer line relates to a polymeric material, supplying a preparation method of polyaniline nanometer line based on the polymerization on suspended interface, the method is of gentle reaction conditions, high efficiency, and suitable for industrial production. A acidic aqueous solution containing 1mol/L hydrion concentration is added into a container to do external phase before water soluble dispersing agent is fed into and the water soluble dispersing agent concentration is 1 to 2 g/L in the terminal system; organic solution containing 0.1 to 1 mol/L aniline monomer is added into the acidic aqueous solution, then an acidic aqueous solution with the same mole of oxidant as aniline is added into the aqueous solution under the reaction temperature from 0 DEG C to room temperature, and the volume ration between organic phase and the acidic aqueous solution is 1/20 to 1/5; the product is filtrated after 2 to 48 hours of reaction, then the filtration is washed to neutral by distilled water, and washed with alcohol until the filtration is colorless and transparent; the product is baked under 40 to 60 DEG C, finally the polyaniline nanometer line with diameters between 40 to 90 nm is acquired.

The invention relates to a flexible conductive composite fabric, and preparation and application thereof. The flexible conductive composite fabric comprises a conductive composite film (1), a base fabric (2) and an adhesive (3), wherein the base fabric (2) is adhered on the upper and lower surfaces of the conductive composite film through the adhesive (3); and two ends of the conductive composite film (1) are respectively adhered with an electrode. The flexible conductive composite fabric is prepared through the following steps: impregnating a carbon nanotube thin film in a graphene suspension, then taking the carbon nanotube thin film out of the graphene suspension, and carrying out drying in the air so as to obtain a carbon nanotube/graphene composite film; allowing a polyaniline nanowire array to grow in situ on the surface of the carbon nanotube/graphene composite film so as to obtain a carbon nanotube/graphene/polyaniline composite film; and respectively adhering an electrode at two ends of the composite film, coating the base fabric on the upper and lower surfaces of the composite film through the adhesive, and carrying out curing so as to obtain the flexible conductive composite fabric. The prepared conductive fabric provided by the invention has good conductivity, can reach 103 S/m to 105 S/m, can bear a certain degree of bending and compressive deformation, and is extensively applied in the fields of intelligent textile structures and intelligent materials.

The invention discloses a carbon quantum dots-polyaniline/carbon fiber integrated composite material, its preparation method and application. According to the invention, the polymerizable aniline monomer acts together with the conductive carbon quantum dots under an integrated reaction to form a carbon quantum dots-polyaniline integrated composite material. The carbon quantum dots-polyaniline nano-wire composite materials are directly grown on the surface of a carbon fiber's conductive substrate and are connected to each other to form a 3D mesh structure. The carbon quantum dots are evenly distributed in the inner surface of the polyaniline nanometer array, and the carbon quantum dots-polyaniline/carbon fiber integrated composite materials can be directly used as super capacitor's electrode materials free of non-adhesive agent to achieve the storage of electrochemical energy. The existence of carbon quantum dots not only improves the conductivity of polyaniline nanometer array material, but also provides favorable support for polyaniline molecules, strengthens the mechanical strength of polyaniline, slows down the damage degree of its main chain in a long cycle and enhances the cycle life of polyaniline electrode materials.

The invention belongs to the technical field of energy storage materials. The invention particularly relates to preparation and application of a polyaniline nanowire/three-dimensional porous grapheneelectrode material. According to the electrode material, foamed nickel is used as a template; graphene oxide is used as a raw material; nickel-based three-dimensional graphene is prepared through a hydrothermal reaction; nickel-based three-dimensional graphene is taked as a conductive substrate; polyaniline nanowires are loaded by an electroplating method; the polyaniline nanowire/nickel-based three-dimensional graphene composite material is prepared; the polyaniline nanowire/three-dimensional porous graphene electrode material is prepared through a chemical impregnation method, heat treatment, acid pickling nickel removal and freeze drying; and the polyaniline nanowire/three-dimensional porous graphene electrode material is used for preparing a supercapacitor. The prepared electrode material has high specific capacitance, energy density and power density.

The invention relates to a method for preparing double-meso-pore ordered mesoporous carbon/ polyaniline nanometer line composite materials and an application thereof. The method includes: using the ordered mesoporous carbon with silica nanometer particles embedded on carbon walls as a carrier, enabling a polyaniline nanometer line array to grow from the inside of a carbon duct to the outside in a chemical oxidative polymerization method, removing silica through hydrofluoric acid to obtain the classified composite materials of double-meso-pore ordered mesoporous carbon/ polyaniline nanometer line composite materials. Small meso pores on a carbon wall of mesoporous carbon can be effectively retained through the method which performs compounding and then removes the silica, specific surface area of the composite materials is improved, migration and diffusion between adjacent ducts of electrolyte ions are facilitated, and the electrochemical performance of the materials is further improved. The method has the advantages of being simple in preparing process, low in cost, capable of controlling the content of polyaniline in the composite materials and capable of being produced in scale mode, and the prepared electrode materials are high in specific capacitance, circulation stability and rate capability.

The invention discloses a method for preparing polystyrene microspheres whose surface is modified with conductive polyaniline nanowires, and relates to a method for preparing polymer nanocomposite materials. Provided is a method for preparing polystyrene microspheres with surface-modified conductive polyaniline nanowires. 1) preparing an acidic aqueous solution of 2 to 5 g/L cationic surfactant; 2) mixing polystyrene microspheres with the acidic aqueous solution containing cationic surfactant; 3) adding an organic solution of aniline monomer to the mixed solution, Stir, the volume ratio of the aniline monomer organic solution to the acidic aqueous solution containing the cationic surfactant is 1:4; 4) get an oxidant that is equimolar to the aniline monomer and add it to the 1mol/L acidic aqueous solution of the same volume as step 1, After stirring and dissolving, add it to the mixture in step 3 under stirring, continue to react after adding, filter with suction, rinse repeatedly with water and absolute ethanol in turn until the filtrate is colorless and the pH value is neutral, and dry the obtained product until constant weight.

The invention provides a method for preparing nitrogen-doped porous carbon nanofiber material with a high specific surface area. The nitrogen-doped porous carbon nanofiber material with the high specific surface area can be obtained by treating electrospun polyacrylonitrile/polyaniline composite nanofibers in an inert atmosphere at an appropriate temperature. Compared with the prior art, the invention uses the electrospun polyacrylonitrile nanofibers directly as a substrate for growing a polyaniline nanowire and synthesizing the electrospun polyacrylonitrile/polyaniline composite nanofibers. In addition to having high content of nitrogen atoms, the composite nanofibers also have an extensive pore structure on the surface. The composite nanofibers can be heat-treated to obtain the nitrogen-doped porous carbon nanofiber material with the high specific surface area. The obtained material is supercapacitor electrode material and has excellent electrochemical properties. In particular, the method for preparing the nitrogen-doped porous carbon nanofiber material with the high specific surface area is simple in preparation process, short in process flow, low in device dependence and suitable for industrial mass production.

The invention relates to a method for preparing a polyaniline nano wire/nano particle complex system. The method is characterized in that the method takes fat-soluble sucrose octaacetate containing eight branch chains as a template and a homogeneous system formed by water and water-soluble organic solvents as the reaction medium and prepares a polyaniline nano wire/nano particle complex system by utilizing a template polymerization method and taking hydrochloric acids as doping acids, which facilitates the utilization of branch chains of sucrose octaacetate molecules to initiate the stereotactic polymerization of aniline to prepare the polyaniline nano wire/nano particle complex system; moreover, the use of water and water-soluble organic solvents as a reaction system avoids the environmental pollution of fat phase organic solvents in interfacial polymerization and emulsion polymerization; moreover, the water-soluble organic solvents are also good solvents for a plurality of polymers, thereby providing a new research method for preparing polyaniline conductive composite materials and having better use value.

The invention discloses a conductive particle and a preparation method thereof, and an anisotropic conductive film. The preparation method of the conductive particles comprises the following steps: bytaking a silicon-containing precursor as a silicon source and water and alcohol as a mixed solvent, performng stirring, centrifuging and drying to obtain mesoporous silica spheres; performing stirring, curing and calcining by taking the mesoporous silica spheres as a template, a resin solution as a carbon source and water and alcohol as a mixed solvent to obtain porous carbon spheres; dissolvinganiline and the porous carbon spheres in an acidic solution, adding an initiator, performing washing and drying to obtain a porous carbon sphere polyaniline nanowire compound which is conductive particles. According to the technical scheme, the problems that existing conductive particles are higher in cost, poorer in compatibility with organic matter, larger in particle size and higher in materialcost due to the fact that the needed filling amount is large in the actual application process can be solved.

The invention discloses a QCM (Quartz Crystal Microbalance) gas sensor modified by polyaniline nanowires as well as a preparation method and application of the gas sensor. The gas sensor is characterized in that a polyaniline thin film with a nanowire-shaped structure is modified on an electrode surface of a QCM and is 80-120nm in diameter and 500-1000nm in length. A gas-sensitive film is generated by an electrochemical polymerization method. The gas sensor has good sensitivity, resilience and repeatability under room temperature, the selectivity is good, and the preparation method is simple and easy to operate, so that the QCM gas sensor can be widely applied in trace-level detection of gas under the room temperature.

The invention belongs to the field of material chemistry, and particularly relates to a preparation method of a stannic oxide/polyaniline nanowire composite photocatalyst. The preparation method comprises the following steps: S1, preparing polyaniline nanowires; S2, mixing the polyaniline nanowires prepared in the step S1 with a tin dioxide precursor solution, and conducting uniform stirring to obtain a mixed turbid liquid, wherein a mass ratio of Sn<2+> to the polyaniline nanowires in the mixed turbid liquid is (4-30): 1; and S3, putting the mixed suspension obtained in the step S2 under an ultraviolet lamp for radiation, reserving a precipitate and conducting purification. The prepared stannic oxide/polyaniline nanowire composite photocatalyst has the characteristics of excellent photocatalytic performance, stable performance and the like, and shows good application prospects in the aspect of degrading organic pollutants.

The invention relates to a conductive composite film comprising a carbon nanotube/graphene/polyaniline composite film, wherein the upper surface and the lower surface of the composite film are loaded with resin and both ends are adhered by electrodes. The preparation of the film is realized through the following steps: immersing a layer of carbon nanotube film in graphene suspension; taking it out and having it dried for a carbon nanotube/graphene composite film; obtaining a nanotube/graphene/polyaniline composite film by in-situ growth of polyaniline nanowire arrays on the surface of carbon nanotube/graphene composite film; adhering electrodes at two ends of the nanotube/graphene/polyaniline composite film; and coating and solidifying the upper surface and the lower surface of the film with resin. A flexible conductive film can be used in smart textiles as both a conductive material and a flexible electronic device. The conductive film material prepared by the invention has good conductivity reaching from 103S/ m to 105S/ m, and can bear certain bending and compression deformation.

The invention provides a sponge composite conductive elastic material, a preparation method and application thereof in the anti-static field, and relates to the technical field of anti-static materials. The sponge composite conductive elastic material provided by the invention comprises polyurethane sponge, and graphene and polyaniline nanowires which are attached to the polyurethane sponge. According to the invention, the polyaniline nanowires and graphene attached to the surface of the sponge have electrical conductivity, generated static charges can be conducted away, accumulation of static electricity is avoided, the polyaniline nanowires enable the surface of the elastic conductive material to realize nanostructuring, and compared with a polyaniline surface which is not subjected to nanostructuring, the contact area of the material surface is increased, and more static charges can be conducted away. The conductivity of the sponge composite conductive elastic material provided by the invention is greater than 0.1mS/cm, and the stronger the conductivity is, the easier the static charge is conducted away, so that the sponge composite conductive elastic material provided by the invention has excellent anti-static performance and can be widely applied to the anti-static field.