56 results about "Conductive polymer composite" patented technology

Composite materials with noble metal coated silver nanowires loaded into polymer are described. The composite materials may have resistivities of no more than about 100 Ohm-cm, or from about 100 Ohm-cm to about 1×1011 Ohm-cm depending on the amount of noble metal coated silver nanowires loaded into the polymer. The noble metal coated silver nanowires may be platinum coated silver nanowires. Metal particulates such as silver flakes or silver particles may be added to the composite materials in order to obtain desired properties. Composite precursor compositions and methods for preparing the composite materials are described.

The invention relates to an ultra-high molecular weight polyethylene / carbon nanotube electromagnetic shielding material injection molding method, and relates to the technical field of conductive polymer composites.The method comprises the following steps that S1, sufficient UHMWPE, linear polyethylene wax and CNT are taken to be dried, and dried UHMWPE, dried linear polyethylene wax and dried CNT are obtained; s2, mechanically blending the dried UHMWPE, the dried linear polyethylene wax and the dried CNT to obtain composite particles; and S3, carrying out injection molding on the composite particles to obtain the ultrahigh molecular weight polyethylene / carbon nanotube electromagnetic shielding material. The ultra-high molecular weight polyethylene / carbon nanotube electromagnetic shielding material is prepared in an injection molding mode, the production period is greatly shortened, the production efficiency is greatly improved, and the method is suitable for industrial production; and a workpiece with a complex geometric structure can be prepared through injection molding, and the application range of the UHMWPE / CNT electromagnetic shielding material can be greatly expanded.

The application relates to the technical field of functional materials, and discloses a method for preparing a conductive polymer composite with the aid of quantum dots and the conductive polymer composite, which comprises the following steps: providing an oil phase solution comprising an organic solvent and a polymer and a water phase solution comprising water, quantum dots, reduced graphene oxide and carbon nanotubes; mixing the oil phase solution with the water phase solution, performing homogenization treatment, and obtaining a Pickering emulsion which can be stored stably for more than 30 days; freezing the Pickering emulsion at a preset temperature, then continuously injecting high-pressure CO2 at the preset temperature to remove the organic solvent, and then performing freeze-drying to remove water, so that a conductive polymer composite with an isolated conductive network structure and high conductivity is obtained; and the conductivity of the conductive polymer composite is as high as 240 S.m ‑1 .

The application relates to the technical field of functional materials, and discloses a conductive polymer composite material and a preparation method thereof, which comprises the following steps: providing an oil phase solution comprising an organic solvent and a polymer, and a water phase solution comprising water, graphene oxide and carbon nanotubes; mixing the oil phase solution with the water phase solution, performing homogenization treatment, and then performing supercritical CO2 drying on the obtained graphene oxide stable Pickering emulsion to remove the organic solvent; then adding a reducing agent to perform a reduction reaction; and finally performing heating drying to remove water, so that the conductive polymer composite material is obtained. In the application, the carbon nanotubes are used as conductive fillers, the graphene oxide stable Pickering emulsion is used as a template, and the supercritical anti-solvent method is used to remove the organic solvent; then the graphene oxide is reduced into reduced graphene oxide with conductivity, and the reduced graphene oxide and the carbon nanotubes form double conductive fillers, so that the conductivity of the prepared conductive polymer composite material can reach 211 S.m ‑1 under the condition of low conductive filler content.

The invention relates to a stretchable conductive polymer composite electrode, a preparation method and application thereof, the stretchable conductive polymer composite electrode is provided with a conductive network layer and a conductive polymer elastomer layer, and the conductive network layer and the conductive polymer elastomer layer are stacked to form a double-layer composite structure. The stretchable conductive polymer composite electrode disclosed by the invention has the beneficial effects of high conductivity, high stretchability, laser patterning and cyclic regeneration. And high conductivity can still be maintained under 100% tensile strain. According to the stretchable conductive polymer composite electrode, high-precision patterning can be achieved through the laser patterning technology, a flexible circuit with the minimum line width being 25 microns is prepared, and customized processing is achieved through digital design. The composite electrode can form a film again after solvent-assisted dissolution, so that closed-loop regeneration of an electrode material is realized.

The application discloses a high-conductivity sodium-ion battery positive electrode material / organic conductive polymer composite material and a preparation method thereof, and comprises the following steps: S1, preparation of a chain product: dissolving an organic conductive polymer monomer in water, adjusting the pH of the solution to be acidic, adding an oxidizing agent, and inducing the organic conductive polymer monomer to undergo a polymerization reaction to form a chain product; S2, preparation of a precursor slurry: adding a sodium source, an iron source and a sulfur source into the chain product solution, and after sufficient dissolution, forming a uniform precursor slurry; S3, preparation of a precursor powder: drying the precursor slurry to realize solid-liquid separation, and obtaining a dried precursor powder; S4, high-temperature sintering: calcining the precursor powder in a protective atmosphere, and obtaining Na 2+x Fe 2‑x (SO4)3 / organic conductive polymer composite positive electrode material after natural cooling. The application has the characteristics of high electronic conductivity, low specific surface area, high compaction density and excellent electrochemical performance.

This invention belongs to the field of lithium battery material technology, specifically relating to a metal oxide / mesoporous manganese dioxide / conductive polymer composite material, its preparation method, and its application. The preparation method includes the following steps: 1) ball milling a commercial metal oxide; 2) mixing the metal oxide powder with an organic polymer monomer and a methyl orange solution and ultrasonically dispersing the mixture to obtain a liquid mixture; 3) adding a potassium permanganate solution to the liquid mixture and performing a high-pressure hydrothermal reaction under stirring to obtain the composite material; 4) subjecting the composite material to alkali treatment, filtering, washing with water, and drying to obtain the metal oxide / mesoporous manganese dioxide / conductive polymer composite material. This metal oxide / mesoporous manganese dioxide / conductive polymer composite material can be used to prepare lithium battery cathode materials with high specific capacity, high conductivity, and high stability in a simple, efficient, and low-cost manner. It is easy to industrialize and solves the problems of low conductivity and poor rate discharge performance of traditional metal oxide cathode materials.

The invention relates to the technical field of functional materials, and discloses a conductive polymer composite material and a preparation method thereof, and the preparation method comprises the following steps: providing an oil phase solution containing an organic solvent and a polymer, and a water phase solution containing water, graphene oxide and carbon nanotubes; mixing the oil-phase solution with the water-phase solution, performing homogenization treatment, performing supercritical CO2 drying on the obtained graphene oxide stable Pickering emulsion to remove the organic solvent, then adding a reducing agent, performing reduction reaction, and then performing heating drying to remove water, thereby obtaining the conductive polymer composite material. The preparation method comprises the following steps: taking a carbon nano tube as a conductive filler, taking a graphene oxide stable Pickering emulsion as a template, removing an organic solvent by adopting a supercritical anti-solvent method, reducing graphene oxide into reduced graphene oxide with conductivity, and forming a double-conductive filler with the carbon nano tube; the conductivity of the prepared conductive polymer composite material can reach 211 S.m <-1 > under the condition of low conductive filler content.

The invention provides an active warm-keeping functional fiber and a preparation method and application thereof, and belongs to the technical field of functional fibers. Comprising a matrix fiber, the matrix fiber is doped with a nano montmorillonite-conductive polymer composite material, and the doping amount of the nano montmorillonite-conductive polymer composite material in the matrix fiber is 1-3%; in the nano-montmorillonite-conductive polymer composite material, the mass ratio of nano-montmorillonite to a conductive polymer is (1: 9)-(9: 1). The functional fiber has hydrophilic, antistatic and far-infrared emission functions, and is a preferable thermal insulation material.

The invention relates to a self-heating anti-icing composite water pipe which comprises a water pipe body and an intelligent temperature control device arranged on the water pipe body. The water pipe body comprises an inner pipe, a heating layer, a heat preservation layer, a fireproof flame-retardant layer and an outer protection layer which are sequentially arranged from inside to outside in a composite mode. The heating layer is made of a conductive polymer composite material and is used for generating Joule heat after being electrified; the intelligent temperature control device comprises a temperature sensor and an intelligent controller; the temperature sensor is arranged between the inner pipe and the heating layer and is used for detecting the temperature of the inner pipe; the intelligent controller is connected with the temperature sensor and the heating layer and used for automatically controlling the heating layer to be powered on or powered off according to the detected temperature of the inner pipe. According to the self-heating anti-icing composite water pipe, heating, heat preservation, fire prevention and protection functions are integrated, the structure is compact, tedious installation and space occupation of external additional equipment are avoided, and the self-heating anti-icing composite water pipe is attractive and durable.

Disclosed is a conductive polymer composite according to various embodiments of the present invention in order to implement the above-described object. The conductive polymer composite may include a polymer adhesive which includes a curable polymer and a curing agent, a conductive filler made of a metal having electrical properties, and a substituting agent configured to substitute for or remove a lubricant layer applied on the conductive filler.

The present invention provides a method for preparing a graphene conductive polymer coating on the surface of a bipolar plate by electrodeposition, comprising the following steps: Step 1, chemically modify graphene oxide to graft anionic functional groups to prepare a modified graphene oxide aqueous dispersion; Step 2, mix the modified graphene oxide aqueous dispersion and the conductive polymer monomer aqueous dispersion in a certain proportion to obtain an electrolyte; Step 3, pretreat the metal-based bipolar plate by immersing the metal-based bipolar plate in a sulfuric acid solution to remove the passivation film on its surface; Step 4, use the metal-based bipolar plate as the anode and a platinum sheet as the cathode, and perform electrodeposition on the metal-based bipolar plate with a DC power supply; Step 5, dry the deposited wet film to obtain a graphene conductive polymer composite coating. The present invention utilizes the doping effect of the functional groups on the surface of anionic modified graphene on the conductive polymer, promotes the π-electron delocalization of the conductive polymer, and improves the conductivity of the composite coating.

Polymer composite with an electrical volume conductivity between 10 -7 S / cm and 1 S / cm, consisting of or containing • a preferably thermoplastic polymer, • Carbon fibers and • Carbon nanostructures.

The application relates to the technical field of functional materials, and discloses an isolated conductive polymer composite material and a preparation method thereof, which comprises the following steps: providing an oil phase solution comprising an organic solvent and a polymer, and a water phase solution comprising water, graphene oxide and carbon nanotubes; mixing the oil phase solution with the water phase solution, performing homogenization treatment, freezing the obtained graphene oxide stable Pickering emulsion, injecting high-pressure CO2, and performing freeze drying to obtain the isolated conductive polymer composite material. The Pickering emulsion template method is combined with high-pressure CO2 drying in a frozen state and freeze drying technology, a small amount of stabilizer can be used, the graphene oxide and the carbon nanotube can be uniformly wrapped on the surface of polymer particles, and a stable conductive network is formed. Finally, the isolated conductive polymer composite material with an electric conductivity of 196 S.m ‑1 at a low conductive filler content is prepared.

The invention belongs to the technical field of lithium batteries, and particularly relates to a preparation method of graphene conductive polymer composite conductive slurry and a preparation method of a coating current collector of the graphene conductive polymer composite conductive slurry. In the preparation method of the composite conductive paste, a traditional binder is replaced by a conductive polymer monomer, and a functionalized ionic liquid and a dynamic cross-linking agent are integrated to construct an integrated conductive network and a self-repairing system. The preparation method of the coating current collector comprises the following steps: sequentially coating the composite conductive slurry on the base material to form a coating surface on the base material; irradiating the coating surface of the substrate with ultraviolet light; rolling the irradiated base material; performing heat treatment on the rolled base material; and etching a pattern on the surface of the coating of the base material subjected to heat treatment to obtain the optimized coating current collector. The coating prepared by the preparation method of the coating current collector provided by the invention has good conductivity, cycle life, self-repairing efficiency, flexibility and salt fog resistance, and breaks through the problems of low conductivity, interface failure and pollution of the traditional carbon-coated current collector.

The present invention relates to composites comprising graphitic carbon dispersed within a polymer matrix. The composites have high thermal conductivities and are particularly useful in solar thermal collectors and other heat exchangers.

A method for manufacturing a conductive polymer composite according to an embodiment of the present invention may comprise: a dissolving step for dissolving thermoplastic polyurethane (TPU) powder in a dimethyl sulfoxide (DMSO) organic solvent; a synthetic solution preparation step for preparing a synthetic solution by adding, to the organic solvent, a solution in which poly(3,4-ethylene dioxythiophene polystyrene sulfonate (PEDOT:PSS) and single-walled carbon nanotubes (SWCNTs) are dispersed; a conductive polymer composite extraction step for extracting a conductive polymer composite by evaporating the synthetic solution; and a processing step for processing the conductive polymer composite.

The invention relates to the technical field of functional materials, and discloses a method for preparing a conductive polymer composite material with assistance of quantum dots and the conductive polymer composite material, and the method comprises the following steps: providing an oil phase solution containing an organic solvent and a polymer and a water phase solution containing water, the quantum dots, reduced graphene oxide and carbon nanotubes; mixing the oil-phase solution with the water-phase solution, and homogenizing to obtain Pickering emulsion which can be stably stored for more than 30 days; the Pickering emulsion is frozen at a preset temperature, then high-pressure CO2 is continuously injected at the preset temperature to remove the organic solvent, then freeze-drying is performed to remove water, the conductive polymer composite material with the isolated conductive network structure and high conductivity is obtained, and the conductivity of the conductive polymer composite material reaches 240 S.m <-1 > under the condition of low conductive filler content.

The invention discloses a high-conductivity polymer compound and a preparation method and application of organic solvent dispersion liquid of the high-conductivity polymer compound. According to the preparation method, long-chain alkyl benzene sulfonic acid is introduced into a compound dispersion liquid containing a pi-conjugated conductive polymer and polyanions to weaken coulomb force between the pi-conjugated conductive polymer and a polyanion chain, and then a water-based organic solvent is used for rapidly intensifying precipitation of a high-conductivity polymer compound precipitate. Meanwhile, an organic modifier is introduced for surface modification, finally, the high-conductivity polymer compound organic solvent dispersion liquid with excellent stability is prepared by re-homogenizing the precipitated modified high-conductivity polymer compound under the action of a high-pressure homogenizer, and the preparation method is simple in process, short in time consumption, free of heating and low in production cost; and the construction of green production economy is facilitated.

Provided is a device assembly including a substrate for mounting a device thereon, electrodes provided on the substrate to be electrically connected to the device, and an encapsulation provided on the substrate and the electrodes to accommodate and encapsulate the device therein, wherein the substrate and the encapsulation are made of a self-healing polymer (SHP), and wherein the electrodes are made of a conductive polymer composite including the SHP.

According to the present disclosure, a conductive polymer composite and a strain gauge are provided. The conductive polymer composite includes poly(3,4-ethylenedioxythiophene):polystyrene sulfonate and waterborne polyurethane, and the conductive polymer composite is homogeneous. The strain gauge includes a substrate and a strain sensitive layer. The substrate has a surface, and the strain sensitive layer is connected to the surface of the substrate. The strain sensitive layer is made of the aforementioned conductive polymer composite, and the strain sensitive layer has at least four separations arranged in a staggered way and forms bow-like structures, which makes the strain sensitive layer deform more in a first direction than a second direction perpendicular to the first direction.

The invention discloses preparation of a metal / conductive polymer composite gel stretchable electrode material and multi-mode wearable sensing application, and particularly relates to the field of electrochemical materials. Comprising PAA (polyacrylic acid) / PEDOT (poly (3, 4-ethylenedioxythiophene)): PSS (poly (3, 4-ethylenedioxythiophene): polystyrolsulfon acid) / M composite gel, the PAA / PEDOT: PSS / M composite gel is prepared from the following raw materials: an acrylic monomer, PEDOT: PSS and metal M aerogel; the acrylic monomer is polymerized to obtain polyacrylic acid, a chain of the polyacrylic acid and a chain of PEDOT: PSS are intertwined and interwoven to form a three-dimensional net-shaped covalent bond structure, and the metal M aerogel is located in the net-shaped covalent bond structure. The stretchable electrode material has excellent electrochemical performance, mechanical performance and conductivity, and can be directly used as a stretchable electrode for electrochemical sensing test and strain sensing test.

The present invention discloses an ordered conductive polymer composite material, a preparation method thereof, and an application. In a three-electrode system, a mixed solution containing one or more polymer monomers or a polymer monomer and an organic polymer resin monomer is used as an electrolyte, and an ordered array of nanowires is prepared by electrocatalytic self-growth, enabling doping and compounding of different conductive polymers and conductive polymers with organic polymers. The nanowires obtained by the present invention have a uniform diameter, adjustable length, and can achieve the compounding of conductive and proton conduction functions. The preparation process of this method is simple, avoiding the steps of traditional nanowire array preparation that require transition metal catalysis and transfer printing. It has good repeatability, stable performance, and strong compounding ability. The ordered array of composite nanowires has great application prospects in supercapacitors, ordered electrode carriers, solar cells, etc.

The application provides a preparation method of ternary conductive polymer composite nanofiber, mainly including the following steps: introducing aniline monomer containing a dopant, an initiator of the aniline monomer, a pyrrole monomer, and an initiator of the pyrrole monomer into different nodes in the same reaction tube by the action of gravity; mixing and flowing in the reaction tube and generating a polymerization reaction; in the flowing process, the aniline is polymerized to generate polyaniline nanofiber, then the pyrrole is polymerized on the surface of the polyaniline nanofiber, and finally the thiophene is polymerized on the surface of the composite nanofiber to generate polyaniline / poly pyrrole / poly thiophene ternary composite nanofiber; the polyaniline / poly pyrrole / poly thiophene ternary composite nanofiber is prepared for the first time, and continuous preparation is realized; only the gravity of the solution is used as a power source, without any power device and stirring device, the operation is simple, the production efficiency is greatly improved, and the method is an effective way for industrialized continuous production of ternary conductive polymer composite nanofiber.

The invention discloses a lithium-rich manganese-based positive electrode material compositely coated with an alpha-ZrP-conducting polymer, a preparation method of the lithium-rich manganese-based positive electrode material and application of a solid-state battery. According to the material, a bulk phase modified lithium-rich manganese-based material is used as a core, and a composite coating layer composed of a delaminated alpha-ZrP nanosheet and a conductive polymer is constructed on the surface of the lithium-rich manganese-based material. The composite coating layer can realize internal proton self-exchange response with the conductive polymer based on the solid acid characteristic of alpha-ZrP, and an overpass type rapid ion-electron dual-transmission channel is formed in the material body. Meanwhile, the coating layer is used as a compact physical and chemical barrier, and harmful side reactions between the positive electrode and the solid electrolyte are effectively blocked. When the prepared positive electrode material is applied to a solid-state battery, high first-circle coulombic efficiency and excellent cycling stability and rate capability are shown, and the two core problems of unstable interface and slow dynamics of a lithium-rich manganese-based material in the solid-state battery are effectively solved.

The invention relates to the technical field of conductive polymer materials, in particular to a thermal response conductive polymer composite material and a preparation method thereof.The preparation method comprises the following steps that PPC, a second temperature response type polymer and conductive filler are blended, and the thermal response conductive polymer composite material is obtained. According to the invention, a second polymer component is introduced into a CPC system and is blended with the conductive filler, so that the conductive polymer composite material with low conductive filler content and high conductivity is obtained. According to the preparation method, preparation of high-performance CPC is achieved, meanwhile, a temperature response material can be obtained, and application to the aspects of automatic control and intelligent temperature-sensitive materials is facilitated.

The present invention relates to a composite comprising a polymer matrix, graphene and at least one thermally conductive inorganic filler, wherein the graphene and the at least one thermally conductive inorganic filler are dispersed within the polymer matrix. The composites have high thermal conductivities and are particularly useful in solar thermal collectors and other heat exchangers.

The invention discloses a conductive polymer ultraviolet aging evaluation method, mainly discusses viscosity and barrier property change characteristics of a stainless steel short fiber reinforced nylon system under ultraviolet aging, and provides a related quantitative analysis method. Through ultraviolet radiation and cyclic compression tests, the influence of aging on viscous dissipation in the compression process is explored. And under cyclic stress, along with the increase of ultraviolet exposure time, the viscous dissipation is reduced in a nearly linear manner. The resistivity and the dimensionless barrier parameter of the material in an unloaded state are linearly reduced along with the prolonging of the ultraviolet radiation time. In order to quantify the ultraviolet aging process, a dimensionless parameter based on the viscosity dissipation change of the polymer under ultraviolet exposure is introduced, a new index is provided for evaluating the aging degree of the material, and meanwhile, a new model is provided for describing the piezoresistive behavior of the conductive polymer composite material under the ultraviolet aging condition.

A physical information graph neural network method for predicting the conductivity of a conductive polymer composite material and analyzing the structure of the conductive polymer composite material belongs to the technical field of computational material science, artificial intelligence algorithm and nano composite material performance prediction, and comprises the following steps: S10: carrying out physical guidance construction on multi-scale microstructure data; s20, constructing and training a physical information graph neural network; s30, performing visual decoding and topology verification on the conductive network; and S40, performance prediction and material design rule output. According to the method, high-precision and physically-credible performance prediction (especially a critical region) is realized, and a basic physical principle is followed. And by embedding physical rule constraints, the generalization and extrapolation capabilities are strong, and the dependence on large-scale annotation data is reduced. And operable design guidance can be output, key interfaces can be identified, optimization strategies can be recommended, performance risks can be early warned, and a closed loop from theoretical prediction to engineering practice can be realized.

A concentrated flowable composition having a total metal weight of at least about 45% by weight is used to form a conductive material. The compositions include metal microparticles, such as silver flakes, silver particles, and / or silver nanowires, and for particularly interested embodiments, reducible metal compositions, such as one or more silver salts, are also included. The composition includes an organic precursor forming a polymeric matrix and includes a dissolved polymeric binder, a crosslinkable or polymerizable monomer, oligomer or polymer, or a mixture thereof. The flowable precursor compositions can be used to form electrically conductive structures, such as composites of a solid polymer matrix and at least about 45% by weight of a metal. The composite may have a resistivity of no more than about 5 * 10 <-3 > ohm-cm. Methods of forming the flowable precursor compositions and composites are described.