540 results about "Conductive ink" patented technology

Various aspects of this disclosure relate to a layered polymer substrate with electrodes and conductive ink embedded in the substrate. In some embodiments, a prosthetic liner may be bonded onto the polymer substrate. The substrate may include an interconnect coupled to the electrodes via the conductive ink. The system may include a controller (e.g., an electrode controller) in communication with the electrodes via the conductive ink. The electrodes may be activated such that they may stimulate nerve fibers in a user's residual limb.

A method of fabricating a wearable and elastically stretchable thermoelectric generator or other thermoelectric device can involve arranging thermoelectric pellets and printing a thermal insulation material alongside and / or around the thermoelectric pellets to form a core layer. The core layer can be cured, and a liquid metal can be selectively deposited on the thermoelectric pellets to form contact points. Printing conductive ink can form stretchable electrical interconnects that define connections among the thermoelectric pellets via the contact points to form an initial middle layer that includes the stretchable electrical interconnects. Printing a thermal interface material may form an initial outer layer positioned between the initial outer layer and an initial side of the core layer to form a layered assembly. The layered assembly may be inverted and receive additional printed layers building away from the core layer, such as an additional interconnect layer and an additional thermal interface layer.

Various aspects of this disclosure relate to a layered polymer substrate with electrodes and conductive ink embedded in the substrate. In some embodiments, a prosthetic liner may be bonded onto the polymer substrate. The substrate may include an interconnect coupled to the electrodes via the conductive ink. The system may include a controller (e.g., an electrode controller) in communication with the electrodes via the conductive ink. The electrodes may be activated such that they may stimulate nerve fibers in a user's residual limb.

An ostomy appliance includes a substrate and at least one Radio Frequency Identification (RFID) circuit disposed on the substrate. The RFID circuit includes a RFID transponder having an antenna and a conductive ink connected in series with the antenna and the RFID transponder. The conductive ink is configured to dissolve in response to exposure to moisture. The RFID circuit is in a closed condition when the conductive ink extends continuously between the RFID transponder and the antenna. The RFID circuit is in an open condition when at least a portion of the conductive ink is dissolved.

The invention provides a preparation method of water-based UV curing conductive ink, and relates to the technical field of polymer conductive material preparation, the preparation method comprises the following steps: respectively preparing modified water-based UV resin, nano-silver and a nano-silver-graphene composite material; and mixing the prepared modified water-based UV resin, nano-silver and a nano-silver-graphene composite material with a photoinitiator, 1, 6-hexanediol diacrylate and an auxiliary agent to obtain the water-based UV curing conductive ink. The preparation method comprises the following steps: firstly, synthesizing an unsaturated epoxy intermediate (EA) by utilizing acrylic acid (AA) and bisphenol A type epoxy resin E-51, then adding the epoxy intermediate EA into an intermediate PUA, and carrying out full end capping on the PUA to prepare light-cured resin; preparing nano-silver and a nano-silver-graphene composite material through a chemical reduction method; and finally, constructing a conductive network in the ink by virtue of a synergistic effect between the nano-silver and the nano-silver-graphene composite material, so as to prepare the water-based UV-cured high-performance conductive ink.

The invention discloses an automatic conductive ink screen printing quality detection method based on a big data model. The method comprises the following steps: acquiring hyperspectral image data, three-dimensional shape data and real-time impedance distribution data of a conductive ink screen printing layer; performing local outlier factor optimization processing on the hyperspectral image data, and extracting a pixel-level spectral feature vector; performing vertical weight function Gaussian regression filtering on the three-dimensional shape data to generate a topological smooth curved surface coordinate set; optimizing the real-time impedance distribution data based on the conductivity distribution matrix, and outputting a noise reduction conductivity matrix; constructing an association graph and a node feature tensor based on the detection key points, and generating silk-screen multi-modal data; through modal interaction, features are extracted in stages, and cross-modal joint features are extracted through multi-stage joint clustering optimization; and a task space separation head module is input, and a quality evaluation result is output through classification and regression branches. According to the method, multi-modal data deep fusion, noise robustness improvement, cross-modal feature accurate extraction and efficient real-time detection are realized.

There is described an artificial intelligence wearable ECG skin patch (400) to detect sudden cardiac arrest. The wearable ECG monitoring patch (400) with AI based predictive analytics and remote based cardiac monitoring (615) system that can detect cardiac arrhythmias automatically in real-time and make a diagnosis with AI models trained with acquired data. The wearable skin has a biocompatible polymer patch (400) which captures the electrical signal through a flexible printed electronic technology based conducting ink and a substrate. The microcontroller controls (201), store and transmit the data packets. The IoT connected signal transmission is capable of recording and transferring the data packets through wireless communication. The AI engine is capable of analysing, evaluating, testing and providing the data packets of sudden cardiac arrest through a peak detector algorithm. The ECG skin patch (400) to detect and measure the sudden cardiac arrest with the R-R interval time series to obtain heart rate variability.

The invention discloses a resistive flexible temperature sensor device and a preparation method thereof, and the method comprises the steps: dispersing graphene conductive ink in a homogenizer at a rotating speed of not less than 1000 r / min to obtain uniformly dispersed graphene conductive ink; copper welding spots are arranged at the two ends of the flexible substrate, the flexible substrate is placed on an operation platform, the operation platform is placed on a silk-screen printing table, graphene conductive ink is evenly coated on the silk-screen printing table for printing, and the obtained flexible substrate with the graphene temperature-sensitive film is placed on a constant-temperature heating table at the temperature of 90-160 DEG C to be dried for 40 min to 2 h; a wire connected with a processor is welded at the copper welding point, and the processor is used for obtaining a temperature value according to the collected voltage value. According to the invention, the wearing comfort is good, and good temperature sensing characteristics and high response speed can be shown in a human body temperature range.

The invention discloses a conductive glass fiber cloth, which comprises a glass fiber base cloth and a carbonized conductive layer formed on the glass fiber base cloth, and the carbonized conductive layer is obtained by coating conductive ink and calcining, the conductive ink is prepared from the following components in parts by weight: 10 to 30 parts of low-melting-point glass powder, 3 to 5 parts of graphene, 0.5 to 2 parts of single-walled carbon nanotubes, 0.1 to 0.5 part of conductive carbon black, 5 to 10 parts of resin, 0.1 to 0.3 part of dispersing agent, 0.01 to 0.03 part of anti-settling thixotropic agent, 0.01 to 0.05 part of silane coupling agent, 70 to 90 parts of water and 5 to 20 parts of ethanol. The conductive glass fiber cloth is high in sheet resistance stability, good in coating adhesion fastness, excellent in impact resistance and suitable for conductive functionalization of thin glass fiber cloth.

An apparatus, system, and method for providing a moisture supplementation detection device. The moisture replenishment detection device includes: a flexible substrate having a circuit screen-printed therein, the circuit including a plurality of conductive ink layers and a dielectric ink layer; a sensor on the flexible substrate, wherein the sensor is capable of detecting element data indicative of a characteristic of sweat; an untreated chromatographic paper placed in contact with the skin of the user and capable of wicking sweat from the skin to the sensor along the micro-sized fluid channel; and a Bluetooth antenna on the flexible substrate and in communication with the sensor, and capable of wirelessly communicating the element data to an application capable of indicating to the user the user the suitability of moisture replenishment based on the element data.

The invention relates to the technical field of intelligent materials, and discloses a p-MXene conductive ink and BC reinforced polymer composite film and a preparation method and application thereof.The composite film comprises MXene and bacterial cellulose, the surface of the MXene is coated with waterborne polydopamine, waterborne polyurethane is embedded in the bacterial cellulose, and the surface of the MXene is coated with waterborne polyurethane; hydroxyl groups in the water-based polydopamine and amino groups in the water-based polyurethane form hydrogen bonds to connect the MXene with the bacterial cellulose. The composite film obtained by the invention has excellent mechanical properties and electrical properties, and also has comprehensive properties such as electromagnetic shielding and stress-strain sensing.

The invention belongs to the field of conductive ink, and discloses conductive ink based on PEDOT: PSS and carboxylated carbon nanotubes, and the conductive ink is prepared from PEDOT: PSS, carboxylated carbon nanotubes, [EMIM] [TCB], polyacrylate, salicylic acid and DMSO. According to the conductive ink with PEDOT: PSS as the main body, [EMIM] [TCB], carboxylated carbon nanotubes, salicylic acid and DMSO are introduced to improve the performance of the ink, the obtained conductive ink is high in conductivity, high in oxidation resistance and good in printing performance, and a flexible transparent electrode prepared from the conductive ink is high in conductivity and light transmittance and can be well suitable for the fields of human body wearable, robot electronic skin and the like.

The invention discloses a method for preparing nano copper powder based on a microwave-assisted reduction method and application. The method comprises the following steps: a) preparing a copper ion solution; b) adding a dispersing agent and a surfactant; c) adding a reducing agent; d) microwave heating reaction; e) separating and purifying a product; and f) drying. According to the method, directional reduction and morphology regulation and control of copper ions are achieved through the synergistic effect of a microwave field and chemical reduction, the specific surface area of the obtained product reaches 25-35 m < 2 > / g, the oxygen content is lower than 0.8 wt%, and excellent performance is shown in the fields of electronic packaging and conductive ink; the method has the characteristics of short reaction time (shortened by 90% compared with the traditional method), low energy consumption (less than 0.5 kWh / kg), no harmful by-product and the like, and meets the requirements of green chemical industrial production.

The invention belongs to the technical field of conductive ink, and particularly relates to conductive UV ink-jet ink containing silver nanowires and a preparation method of the conductive UV ink-jet ink. According to the preparation method, the carbon nanotubes are subjected to composite modification, silver loading is realized through a heating reduction method, photocuring performance is obtained by means of grafting of dopamine and acrylic acid, and the conductive UV ink-jet ink containing the silver nanowires is prepared by being matched with the modified silver nanowires for common use, so that the conductive UV ink-jet ink containing the silver nanowires is prepared on the basis of ensuring that the ink is dispersed stably and does not generate precipitates; and the conductivity is effectively improved.

The utility model discloses a non-inductive wireless electroencephalogram cap using a dry electrode, and belongs to the technical field of medical instruments. The electroencephalogram cap comprises a cap-shaped silica gel substrate, the inner surface of the silica gel substrate is provided with a strip-shaped or sheet-shaped printing substrate in a printing electrode and printing wire area, and the printing electrode and the printing wire are coated on the printing substrate through spraying, brush coating, blade coating or printing and are packaged through a sealing layer and a wire packaging substrate respectively. According to the electroencephalogram cap, the main body structure of the electroencephalogram cap is made of a silica gel material, the electrodes and the wires are made by adopting a printing electronic process, the printed wires are connected with an external measuring wire and an instrument through a flexible flat cable after being gathered, and an area covered by the electroencephalogram cap is not provided with any high-hardness structure and part, so that the electroencephalogram cap is very comfortable to wear. The electrode is formed by printing stretchable conductive ink, has low impedance and high flexibility and is tightly attached to the scalp in the long-time wearing process, and the obtained electroencephalogram signal is excellent and stable.

The present invention discloses a method for preparing MXene / TPU conductive fiber, which belongs to the technical field of composite conductive fiber electrode preparation. x The PDA@MXene conductive ink obtained by surface modification of MXene nanosheets with dopamine hydrochloride is loaded onto the large-scale prepared MXene / TPU wet-spun conductive elastic fibers by dipping and coating to prepare PDA@MXene / TPU elastic fiber electrodes. The conductive properties of the composite fiber are used to develop structurally designable flexible self-powered sensing fabrics and fabric-based friction nanogenerators. The present invention solves the contradiction between high deformability, electrical properties and wearing comfort of flexible stretchable fiber electrodes; the surface modification of MXene by in-situ self-polymerization of dopamine solves the interface problem of MXene on the fiber surface, including but not limited to enhancing the adhesion properties between the conductive ink and the fiber and improving the electrical stability of the stretchable fiber electrode.

The invention discloses a method for preparing a conductive pattern through vacuum filtration, and relates to the field of flexible electronic technology and micro-nano processing. Comprising the following steps that firstly, a nanometer liquid metal particle solution is obtained; 2, polyvinylpyrrolidone is added into the nanometer liquid metal particle solution, solvent dilution and ultrasonic treatment are carried out, and liquid metal conductive ink is obtained; 3, printing a powdered ink pattern on the filter membrane by using a laser printer, and then forming a patterned thin film with a conductive pattern on the filter membrane through vacuum filtration of the liquid metal conductive ink; 4, the patterned thin film and the low-viscosity transfer printing thin film are subjected to cold pressing attachment and further subjected to hot pressing transfer printing to a target base material, and a finished product is obtained. The method has the beneficial effects that the laser printing technology is used for achieving accurate patterning, the liquid metal conductive ink forms a uniform patterned thin film on the filter membrane through the vacuum filtration technology, the manufacturing process is optimized, and the production efficiency is improved.

Examples include a functionalized compressible nonwoven material (CNM) cushion with a three-dimensional (3D) pressure-varying electrical conductance (PVEC) region. Integrated with the PVEC surface area is a conductive ink printed on thermoplastic film (CPT) single-sided conductance measurement coupling. The CPT single-sided conductance measurement coupling includes, on the thermoplastic film, N pairs of contact pads and N pairs of pad connection traces. The N pairs of contact pads are maintained, by thermoplastic adhesion, in direct electrical contact with the PVEC surface areas. The N pairs of connection traces extend from the N pairs of contact pads to trace terminals. A conductance measuring circuit selectively applies, via the N pairs of connection traces, voltage and a path to ground to the pairs of contact pads, and measures the resulting current.

The invention discloses conductive ink for ink-jet printing and a preparation method thereof. Comprising the following steps: step 1, dissolving bisphenol F type epoxy resin in dimethyl nylon acid, stirring for 10-15 minutes until the bisphenol F type epoxy resin is completely dissolved, then adding modified composite filler, methyl tetrahydrophthalic anhydride, a dispersing agent and a flatting agent, and continuously stirring for 20-30 minutes to obtain a mixed solution; 2, the mixed solution is subjected to ultrasonic treatment for 30-40 min till no macroscopic particles exist, and the conductive ink is obtained. The conductive ink has the beneficial effects that the epoxy resin is mixed with the modified composite filler, the methyl tetrahydrophthalic anhydride and the like, and ultrasonic treatment is performed to prepare the conductive ink; according to the conductive ink, the MXene and the carbon nanotubes are adopted to construct a three-dimensional conductive network, and the dispersity and the interface bonding force of the filler are improved through surface modification, so that the conductivity and the mechanical strength of the ink are effectively improved.

The invention discloses a multifunctional wound patch combined with electrical stimulation therapy and a preparation method and application thereof, and relates to the technical field of medical materials, and the multifunctional wound patch comprises a double-layer electrostatic spinning fiber membrane, a conductive ink layer and a conductive hydrogel layer. S-shaped concentric circle conductive electrode pairs written by conductive ink are integrated on the surface (directly in contact with the wound) of the hydrophobic fiber layer, and square conductive ports with corresponding sizes can be drawn at the tail ends of the two electrodes as required. And the surface of the conductive electrode pair is packaged by conductive hydrogel with an antibacterial function. An external electric signal can be transmitted to the electrode pair of the patch through the conductive port of the electrode pair, and then acts on a wound through the conductive hydrogel layer, so that on-demand electrical stimulation treatment on the wound is realized. According to the multifunctional wound patch combined with the electrical stimulation therapy, discharge of redundant seepage can be achieved, and it is guaranteed that the wound environment is good; the curcumin-loaded medicine has the effects of resisting bacteria, resisting oxidation and promoting healing on wounds.

Systems and methods for press-forming a flexible thin sheet of ceramic paste, such as, e.g., barium titanate, into a wavy shape. The wave may be 1-dimensional, such as, e.g., a sinusoid, or 2-dimensional, such as, e.g., an egg-crate shape. A mold embossed with a reverse, or negative, of an intended form of the wavy shape may be used. The egg-crate shape ceramic layers may be stacked with alternating sheets of a conductive, or electrode, material before being sintered and densified. Alternatively, the ceramic sheets can be layered with the sheets of conductive material, and then pressed into the wavy shape together. Optionally, conductive ink may be applied to the ceramic sheets instead of using sheets of conductive material in both cases.

The invention discloses a manufacturing method of a flexible electronic skin light source, which comprises the following steps: cutting a base material to obtain a base material raw material with a required size; obtaining conductive silver paste, mixing the conductive silver paste with a diluent, and uniformly stirring to prepare conductive ink; printing conductive ink on the surface of the base material raw material according to a preset circuit pattern by using screen printing equipment to obtain a base material circuit diagram; placing a light source patch at a corresponding position of the substrate circuit diagram, and electrically connecting the light source patch with the circuit diagram by adopting welding equipment to obtain an electrically connected light source patch substrate; laminating a polyimide reinforcing material on the back surface of the light source patch to obtain a flexible light source semi-finished product; the flexible light source semi-finished product is packaged, the flexible light source semi-finished product is completely wrapped, and the flexible electronic skin light source is obtained; the flexible electronic skin light source manufactured through the method can be bent in any direction, the bending frequency of the flexible light source is greatly increased, and the service life of the flexible light source is greatly prolonged.

The invention discloses a modified MXene conductive polymer bacterial cellulose composite fiber electrode and a preparation method and application thereof, and belongs to the field of composite conductive super-strong fiber preparation. The preparation method comprises the following steps: mixing K-MXene and a conductive polymer to obtain composite conductive ink; then, the strip-shaped BC hydrogel is crosslinked with composite conductive ink through a hydrogen bond, and K-MXene / PEDOT: PSS-coated BC conductive hydrogel is obtained; secondly, the conductive hydrogel is subjected to a wet state-drafting technology and a wet state-twisting technology, and K-MXene / PEDOT: PSS-BC conductive composite large fibers are obtained; finally, the p-K-MXene / PEDOT: PSS (at) BC composite conductive large fiber electrode is obtained through dip coating of PDMS dispersion liquid and solvent replacement, and the p-K-MXene / PEDOT: PSS (at) BC composite conductive large fiber electrode is obtained. The prepared fiber electrode and commercial yarn can be woven into an intelligent fabric which is used for a self-powered sensor and reliable detection of human body signals.

Conductive ink compositions comprising gold complexes are provided. Also provided are methods of preparing the conductive ink compositions, methods of forming conductive structures from the conductive ink compositions, and structures formed from the conductive ink compositions. The conductive ink compositions preferably comprise a gold metal, an alkylamine ligand, and a solvent. The conductive ink compositions can be used to form conductive structures comprising gold, for example by inkjet or other printing methods, at temperatures of 300° C. or less. Such conductive structures can be formed on a variety of substrates.

Provided are a conductive ink capable of forming metal wiring having low volume resistivity, a method for producing a copper-nickel sintered film, and a copper-nickel sintered film.　This conductive ink comprises copper particles, a copper complex, and a nickel complex, the copper complex being a complex represented by Cu(HCOO)2(L)m and the nickel complex being a complex represented by Ni(HCOO)2(L)n, where L is at least one selected from the group consisting of 2-amino-2-methyl-1-propanol, 1-amino-2-propanol, 2-amino-1-butanol, 2-(methylamino) ethanol, and 2-aminoethanol, m is a natural number of 2-6, and n is a natural number of 2-6, the ratio of copper contained in the copper complex to the total of the copper particles and the copper contained in the copper complex being 0.5-15.0 mass%, and the ratio of nickel contained in the nickel complex to the total of the copper particles, the copper contained in the copper complex, and the nickel contained in the nickel complex being 0.5-7.0 mass%.

The invention provides a preparation method of high-conductivity composite graphene, conductive ink and application thereof, and the preparation method comprises the following steps: dispersing graphene into a solvent to obtain a graphene dispersion liquid; adding a silane coupling agent with an amino group into the graphene dispersion liquid, and reacting to obtain aminated graphene; and adding a first dispersing agent into the aminated graphene, adding silver powder after uniform dispersion, and grinding to form an Ag-N coordinate bond between the silver powder and the aminated graphene, thereby obtaining the high-conductivity composite graphene. In the preparation method of the high-conductivity composite graphene provided by the invention, a silane coupling agent with an amino group is added into a graphene dispersion liquid, amination modification is completed through a condensation reaction with a hydroxyl group on the surface of the graphene, silver powder and the amino group of the graphene form an Ag-N coordinate bond, so that silver particles are completely coated with the graphene, a continuous C-Ag-C conductive network is constructed, and the high-conductivity composite graphene is obtained. According to the network, path breakpoints are reduced, interface contact resistance is reduced, charge transmission efficiency is improved, conductivity reduction after graphene compounding is effectively inhibited, and high conductivity and high heat resistance are achieved.

The antenna module may include: an antenna board including a plurality of conductive layers and having an external hole formed to penetrate the plurality of conductive layers, the antenna board including a dielectric layer disposed between at least two conductive layers and having polytetrafluoroethylene; a plurality of radiation structures disposed on the antenna board; a plated through-hole formed to penetrate the dielectric layer and at least one of the plurality of conductive layers within the external hole and electrically connected to at least one of the plurality of radiation structures; and non-conductive ink disposed between the external hole and the plated through-hole. The thermal expansion coefficient of the non-conductive ink in the stacking direction of the plurality of conductive layers may be lower than the thermal expansion coefficient of polytetrafluoroethylene in the stacking direction of the plurality of conductive layers.

Disclosed are an electron-transport conductive ink containing a benzodifurandione-based compound, a preparation method therefore, and application thereof. The conductive ink comprises a benzodifurandione-based compound, a specific surfactant, and a solvent;the benzodifurandione-based compound has the following structural unit:The present disclosure introduces a specific surfactant capable of interacting with the benzodifurandione-based compound, which is usually a unit capable of forming a hydrogen bond or ionic electrostatic force with the benzodifurandione-based compound, such that, in addition to the dispersion ability of the surfactant, the force makes the benzodifurandione-based compound more stable after dispersion, preventing aggregation over time and ensuring better dispersion stability.

The invention discloses printing equipment for RFID antenna production, which comprises a printing table and a printing unit, a pressing mechanism is arranged on the top surface of the printing table, the pressing mechanism is used for pressing an RFID antenna base material and a template on the top surface of the printing table, the printing unit is arranged on the top surface of the printing table, and the printing unit comprises a scraping printing assembly and an adjusting assembly. The printing unit comprises a scraping and printing assembly and an adjusting assembly, the scraping and printing assembly is used for scraping and printing conductive ink on a template and an RFID antenna base material, the adjusting assembly is used for adjusting the scraping and printing assembly so as to scrape and print the RFID antenna base material and the template with different thicknesses, and the gathering unit is arranged on the outer side of the printing unit and used for gathering the diffused conductive ink. The gathering unit is arranged on the printing unit to ensure that the printing unit performs uniform scraping printing on the RFID antenna base material and the template, and the mixing unit is arranged on the outer side of the gathering unit and is used for mixing the stored conductive ink in real time.

Improved conductive ink compositions are provided. The improved conductive ink compositions include a silver complex formed by mixing a silver carboxylate, specifically a silver decanoate, a cyclic azasilane adhesion promoter, and at least one dissolving agent. The silver carboxylate of the subject ink compositions is decarboxylated at a temperature of 250 °C or less, optionally in the presence of an acid stabilizer or non-acid stabilizer, to form a conductive structure. Methods of making the compositions and methods of forming conductive structures from the compositions, including methods where the disclosed compositions are applied to a substrate by various techniques, are also provided.