21 results about "Conductive polymer composite" patented technology

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.

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 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.

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.

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 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.

This invention relates to the field of respiratory status monitoring technology, specifically disclosing a respiratory status recognition method and system based on flexible deformation sensing. It utilizes a template inversion process to fabricate a conductive polymer composite flexible sensor with a micro-nano inverted pyramid structure on its surface, causing a significant change in resistance under minute mechanical deformation. The flexible sensor is integrated into a wearable carrier and attached to the human respiratory or joint area to collect time-series electrical signals containing respiratory signals and motion interference. By performing time-series segmentation and feature extraction on the collected signals, and decoupling the respiratory rhythm features and motion interference features in the signals based on a time-series modeling recognition network, stable recognition of states such as calm breathing, deep breathing, rapid breathing, and coughing is achieved under dynamic interference conditions. This invention has the advantages of simple structure, low cost, high sensitivity, and strong resistance to dynamic interference.

This invention provides a continuous preparation apparatus and method for binary conductive polymer composite nanofibers. A dopant-containing aniline monomer solution and initiator solution, and a dopant-containing thiophene monomer solution and initiator solution are respectively injected into corresponding containers. Under gravity, the aniline monomer solution and its initiator solution flow into the main pipe through branch pipes, where they mix and polymerize to form polyaniline nanofibers. Subsequently, they continue to flow in the main pipe and mix with the thiophene solution and its initiator solution. Thiophene undergoes in-situ chemical oxidative polymerization on the surface of the polyaniline nanofibers, generating polyaniline / polythiophene composite nanofibers. After washing and drying, the polyaniline / polythiophene composite nanofibers are obtained. The entire flow and mixing process of this invention is achieved by gravity, eliminating the need for mixing and stirring devices and pumps; this avoids clogging of the solution during polymerization and greatly improves production efficiency.

The application discloses an alpha-ZrP-conductive polymer composite-coated lithium-rich manganese-based positive electrode material, a preparation method thereof and solid-state battery application. The material takes a bulk-modified lithium-rich manganese-based material as a core, and a composite coating layer composed of exfoliated alpha-ZrP nanosheets and a conductive polymer is constructed on the surface of the core. The composite coating layer can realize internal proton self-exchange response based on the solid acid characteristics of alpha-ZrP and the conductive polymer, and a "viaduct type" fast ion-electron dual transmission channel is formed in the material. Meanwhile, the coating layer acts as a dense physical and chemical barrier, effectively blocking the harmful side reactions between the positive electrode and the solid-state electrolyte. When the positive electrode material prepared by the application is applied to a solid-state battery, high first-cycle coulomb efficiency, excellent cycle stability and rate performance are exhibited, and the two core problems of interface instability and slow kinetics of the lithium-rich manganese-based material in the solid-state battery are effectively solved.

The invention discloses a real-time sitting posture monitoring intelligent cushion for the field of medical care and a preparation method of the real-time sitting posture monitoring intelligent cushion, and belongs to the technical field of conductive polymer composite materials and flexible electronics. The preparation method of the intelligent cushion for real-time sitting posture monitoring comprises the following steps: preparing a polymer spinning solution, carrying out electrostatic spinning on a receiver wrapped with a template to obtain a polymer fiber film with an ordered micro-bulge array structure, and then immersing the polymer fiber film into a conductive material solution for dip-coating treatment to obtain the intelligent cushion for real-time sitting posture monitoring. And assembling with an interdigital electrode to obtain the flexible pressure sensor. And fixing the pressure sensor on a flexible substrate to obtain the intelligent cushion. The flexible pressure sensor has excellent sensitivity, pressure response range and durability. After a plurality of flexible pressure sensors are integrated into the intelligent cushion system, not only can pressure distribution be visualized, but also a specific sitting posture can be accurately identified.

The invention discloses a preparation method of a conductive polymer composite aluminum foil for a solid-state battery and a solid-state capacitor, and relates to the technical field of conductive composite aluminum foils. According to the process, conductive macromolecules serve as a main body, specific doping acid is introduced to achieve stable doping of current carriers, the conductive macromolecules are compounded with conductive filler of a micron-sized and / or submicron-sized aluminum powder mixture, meanwhile, auxiliaries such as a tackifier, a silane coupling agent and a dispersing agent are added, uniform conductive slurry is prepared, then the surface of aluminum foil is coated with the uniform conductive slurry, and the conductive layer is formed through drying and curing. The obtained composite aluminum foil is continuous in conductive network, firm in interface bonding, low in resistance, good in adhesive force and small in resistance change under the high-temperature aging condition, and the conductive stability and reliability of a current collector of a solid-state device can be effectively improved.

The present disclosure relates to a polymer composite with an electrical volume conductivity between 10 -7 S / cm and 1 S / cm. In one embodiment, the polymer composite contains or consists of a preferably thermoplastic polymer, carbon fibers, and carbon nanostructures. In another embodiment, the polymer composite contains or consists of a preferably thermoplastic polymer, carbon fibers, and carbon black particles. In a further embodiment, the polymer composite contains or consists of a preferably thermoplastic polymer, carbon fibers, carbon nanostructures, and carbon black particles. The present disclosure further relates to a filament with such a polymer composite, a component manufactured therefrom, and a 3D printing process.

This disclosure provides a method for preparing a conductive polymer composite aluminum-plastic film and a lithium-ion battery. The method for preparing the conductive polymer composite aluminum-plastic film includes the following steps: obtaining aluminum foil; dissolving a conductive polymer in N-methylpyrrolidone, then mixing it with a polyurethane adhesive to obtain a polymer slurry; coating the polymer slurry onto both surfaces of the aluminum foil and baking and curing it to form a conductive polymer layer; coating an outer adhesive layer on one side and bonding it with a surface polypropylene layer, then performing hot rolling and curing treatment; coating an inner adhesive layer on the other side and bonding it with a bottom polypropylene layer, then performing hot rolling and curing treatment to obtain the aluminum-plastic film. The redox electrocatalytic activity of the conductive polymer promotes the formation of a stable and dense passivation film on the aluminum surface, improving corrosion resistance; the electrochromic properties of the conductive polymer allow for continuous monitoring of encapsulation defects, thereby reducing aluminum foil corrosion problems.

This invention discloses a multifunctional conductive polymer composite material, its preparation method, and a cathode material. The preparation method includes: providing a first mixed solution and a second mixed solution; the first mixed solution is composed of a PEDOT:PSS aqueous solution, ethylene glycol, and a PVA aqueous solution; the second mixed solution is composed of β-cyclodextrin, tannic acid, and water; under stirring conditions, dispersing the second mixed solution into the first mixed solution to obtain a pre-composite system; dispersing a crosslinking agent into the pre-composite system to obtain a co-crosslinking precursor solution; and preparing the co-crosslinking precursor solution into a film to obtain the multifunctional conductive polymer composite material. This invention successfully transforms the conformation of the PEDOT chain into a highly conductive quinone structure by introducing dopants ethylene glycol (EG) and β-cyclodextrin and tannic acid (TA), significantly improving the conductivity of the composite material. Simultaneously, the introduction of the PVA polymer network comprehensively regulates the water solubility of the conductive polymer composite material, greatly improving the stability of the cathode material.

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 hydrogel-conductive polymer composite film electrode based on an interface penetration strategy and a preparation method and application of the hydrogel-conductive polymer composite film electrode, and belongs to the technical field of flexible conductive composite films. The precursor solution is subjected to thermal crosslinking polymerization to form hydrogel, and firm interface bonding is formed between the hydrogel and the polymer substrate, so that the interface penetrating strategy not only retains high conductivity of the conductive polymer substrate, but also enables the polymer film electrode to have relatively good adhesion; the hydrogel-conductive polymer film electrode prepared by the method can still keep a large effective contact area in dynamic measurement, and human physiological electric signals can be stably collected.