59results about How to "Conductivity adjustable" patented technology

Electrolyte capacitors containing certain polythiophenes are described. More particularly, the polythiophenes have backbones containing repeating units of the following general formula (I) and/or repeating units of the following general formula (II),

wherein A is, for example, a C₁-C₅-alkylene radical, R is, for example, a C₁-C₁₈-alkyl radical, and x is an integer from 0 to 8. Also described are dispersions comprising such polythiophenes, and the use of such polythiophenes or dispersions thereof for producing conductive layers.

The invention relates to a novel method for preparing a polyaniline composite conductive fabric. The novel method for preparing a polyaniline composite conductive fabric is characterized in that a conductive fabric with good conductive properties is prepared from a chemical fiber fabric as a matrix material and polyaniline as a conductive material through an in-situ polymerization method (also known as an in-situ adsorption polymerization method). The novel method for preparing a polyaniline composite conductive fabric adopts an ultrasonic dipping treatment process as an auxiliary process of a base fabric dipping process adopting aniline. Therefore, the novel method for preparing a polyaniline composite conductive fabric has good surface modification effects on a base fabric, is beneficial for depositing a conductive material on fiber surfaces of the base fabric in polymerization and enabling the conductive material to permeate into fibers of the base fabric, and improves conductivity and conductive stability. A conductive fabric prepared by the novel method has high conductivity and good environmental stability, is easy for synthesis, and keeps physical and mechanical properties belonging to fabrics on the basis of acquirement of conductive properties, wherein surface resistance R of the conductive fabric is reduced to a value of 1 to 5 kilo-ohm.

The invention discloses a reconfigurable antenna based on a graphene coating. The reconfigurable antenna comprises an antenna body which comprises a ground plate and a monopole erected on the ground plate. The antenna body further comprises a dielectric sleeve which is thoroughly through and shaped like a hollow cylinder. The dielectric sleeve is positioned on the group plate and at the outer periphery of the monopole. One of inner and outer side surfaces of the dielectric sleeve is coated with a grapheme coating, and the other is coated with a silicon coating. Each of the graphene coating and the silicon coating is connected with one end of external offset voltage, and a certain gap is reserved between the graphene coating or the silicon coating connected with the anode of the external offset voltage and the ground plate. The external offset voltage is controlled by dividing the graphene coating and the silicon coating into multiple blocks, so that the antenna is enabled to have characteristics of wide band, reconfigurable frequency and/or reconfigurable radiation pattern.

The invention provides an ultrahigh-elasticity wire and a preparation method thereof. The ultrahigh-elasticity wire is in a helical structure, and the ultrahigh-elasticity wire comprises a bottom elastic substrate, flexible conductive fibers adhered to the surface of the bottom elastic substrate and in a helical structure, and a flexible filling substrate embedded in the flexible conductive fibers.

The invention provides an electroconductive plastic with high electrical conductivity and a preparation method thereof. The electroconductive plastic is composed of a plastic matrix, electroconductive polyaniline, a dispersant and an antioxidant. The preparation method comprises the following steps: 1. synthesis of the electroconductive polyaniline: adding aniline to distilled water on the basis of using an inorganic acid as a doping agent, dissolving ammonium persulfate in the distilled water to obtain an ammonium persulfate solution, dropwise adding the ammonium persulfate solution at a constant speed, carrying out suction filtration, washing and drying; and 2. preparation of the electroconductive plastic: firstly adding a plastic matrix resin and the dispersant to a mixing roll, mixingfor some time; then adding the plastic matrix resin; then adding polyaniline until the two components are completely mixed to obtain a mixture; introducing the mixture to a mold, hot-pressing; and cooling to room temperature. According to the invention, a hot-melting and blending method is utilized to prepare the electroconductive plastic with high electrical conductivity. The obtained electroconductive plastic can be used for overcoming the defects that the existing electroconductive plastic has large filling amount of electroconductive filler, poor compatibility of the filler and the plastic matrix and the like, the volume conductivity of the electroconductive plastic provided by the invention can be adjusted within a large range, and the retention rates of original mechanical properties and processing properties of the plastic base body are high.

The invention discloses a sodium ion battery negative electrode material based on carbon material and pitch and a preparation method and application thereof, wherein the sodium ion battery negative electrode material is a composite carbon material of which the surface is coated with pitch-based ordered carbon structure and appearance is an irregular block shape or vertical channel shape. The carbon material and the pitch are used as precursor raw materials, the pitch is melted and coated on the surface of the carbon material by heat treatment in the air after mechanical mixing, and then the pitch and the carbon material are carbonized and cracked in an inert atmosphere at the same time to obtain a composite carbon material with a surface orderly structure and an internal disorderly structure; Wherein the kind of charcoal comprises charcoal and bamboo charcoal, the charcoal comprises one or more mixtures of white charcoal, black charcoal, activated carbon and machine charcoal, the bamboo charcoal comprises one or more mixtures of carbonized materials of bamboo, pale bamboo, bitter bamboo, thunder bamboo and yellow bamboo, and the pitch is one or more mixtures of coal tar pitch, petroleum pitch and natural pitch.

The invention discloses a heat-generating composite material of graphene and bimetallic nanowires and a preparation method thereof, wherein the heat-generating composite material includes preparationraw materials and a preparation method. The preparation raw materials comprise the following components: graphene oxide, copper nanowires, and silver, platinum, gold or palladium noble metal salts. The highly conductive nano component with stable structure is obtained by composting of the bimetallic nanowires and graphene oxide. At the same time, graphene oxide is easy to disperse in a polymer phase, a complicated and energy-consuming dispersion treatment means is avoided, the introduction of a dispersant is not needed, the preparation process is greatly simplified, the processing cost is low,and the heat-generating material can be produced in large quantities; the time of the prepared heat-generating material required to be heated to a stable value in a range of 10-220 V is less than 300s, and the stable temperature can be regulated in a range of 0-200 DEG C through voltage. The electrical conductivity of the prepared heat-generating composite material can be adjusted in a range of0.1-10 S/cm. The prepared heat-generating composite material is suitable for use as a warm-keeping material, also can be used as a temperature control material, and has broad application prospects.

A method for developing a polymer membrane of a polymer membrane electrode intended for the potentiometric detection of at least one analyte present in a solution to be analysed, the method including: depositing a solution, in the liquid phase, including the constituents of the polymer membrane at the surface of an internal electrolyte solution, the latter being in the liquid phase and occupying the internal cavity of an electrode body; drying the solution including the constituents of the polymer membrane, resulting in the polymer membrane at the surface of the internal electrolyte solution.

The invention discloses a carbon black-graphene/aqueous polyurethane coating composite conductive thin film based seawater power generation apparatus, and a preparation method and an application therefor. The seawater power generation apparatus is prepared by the steps of dispersing the aqueous polyurethane coating into a dispersion liquid firstly; then enabling the dispersion liquid, graphene and carbon black to be mixed and dispersed; next, coating a substrate with the mixed dispersion liquid, and drying the substrate naturally to obtain the carbon black-graphene/aqueous polyurethane coating loaded composite conductive thin film; and then further assembling the seawater power generation apparatus. By making full use of the interface charge transmission generated when the composite conductive thin film is washed by sea water, the output of the current and voltage signals is realized; when the thin film is washed by seawater, the seawater power generation apparatus is formed; the seawater power generation apparatus has simple preparation method and low cost; the large-area preparation of the seawater power generation apparatus can be realized; and meanwhile, the seawater power generation apparatus is excellent in performance, and can be applied in power generation on coastlines, rocks, ships, sea islands and the like, so that the utilization of the inherent source of the sea is improved.

The invention discloses a touch electronic piano which at least comprises an electric touch control chip, a sound generating chip and a sound generating device which are electrically connected and a keyboard equipped with key modules and a power supply which supplies power to the circuit. The keyboard is arranged on the upper surface of a hardboard. The conductive parts of the key modules are the keys covered by conductive ink. The key modules and the electric touch control chip are electrically connected through the conductive ink. The body of the electronic piano is only manufactured by the hardboard without using plastics to manufacture the keys or the body so that the manufacturing cost can be reduced, the size is small, the weight is low and the electronic piano can be easily carried by the user to enjoy the fun of music anytime and anywhere; the number of the keys can be increased or decreased according to the actual requirement, and the color of the keys can also be manufactured by black and white or color conductive ink according to the requirement so that the interestingness of the electronic piano can be increased; and the conductive ink of the keys on the key modules can be manufactured through printing and can also be manufactured through coating by the user so that the operability of the electronic piano can be increased.

The invention provides a zeolite-porous carbon-photocatalyst ternary composite material and a preparation method thereof. The ternary composite material comprises a carrier and photocatalysts, whereinthe carrier comprises composite zeolite and porous carbon, and the photocatalysts are loaded on the inner surface and the outer surface of the carrier. The carrier of the zeolite-porous carbon-photocatalyst ternary composite material comprises the zeolite and the porous carbon, and the wastewater treatment effect of the ternary composite material is improved by the aid of the composite zeolite serving as a carrier. The carrier of the ternary composite material is a porous carrier, so that an adsorption environment is provided for the photocatalysts, the zeolite or the porous carbon functionsin adsorption and filtration, heavy metals are adsorbed, or irons are exchanged, organic matters are intercepted and fixed, microorganisms are adsorbed on the surface of the zeolite or the porous carbon, the intercepted organic matters are degraded and decomposed, photocatalyst nano-particles are prepared into a strong oxidation environment, and all the organic matters in water are decomposed.

The invention provides a preparation method of tellurium terpene/graphene hybridization porous fibers with radial opening holes. The method includes the steps that a mixture of the tellurium terpene and oxidized graphene is prepared, a mixing dispersion solution of the tellurium terpene/oxidized graphene is prepared, and spinning and post-processing are made. According to the preparation method oftellurium terpene/graphene hybridization porous fibers with radial opening holes, the defects that the tellurium terpene is prone to stacking with each other, the dispersity in water is poor, and thetellurium terpene dispersion solution itself has no spinnability is solved through the function of the oxidized graphene to assist dispersion and spinning, and the orientation construction of holes of porous tellurium terpene/ oxidized graphene in the process of spinning is achieved. Tellurium terpene/graphene hybridization porous fibers with radial opening holes and an application thereof are provided.