363 results about "Polypyrrole" patented technology

The invention belongs to the technical field of aerogel, and particularly relates to high-conductivity aerogel powder as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly preparing a graphene / polypyrrole nanosheet composite material with a three-dimensional structure, and then preparing the polyimide / graphene / polypyrrole ternary hybrid conductive aerogel by taking a polyamide acid solution as a precursor through a solution dipping and freeze drying process. Polyimide is used as a framework of high-conductivity aerogel powder, excellent mechanical strength and structural integrity are provided, the common brittleness problem of a pure graphene carbon material or polypyrrole conductive polymer aerogel is solved, and the three-dimensional graphene / polypyrrole nanosheet composite material has excellent elasticity and toughness and can be used for preparing a composite material with high conductivity. The polyimide aerogel prepared by the method can be dispersed in a polyimide matrix as a nano reinforcement, can effectively transfer stress and prevent crack propagation, and endows the aerogel with higher mechanical properties.

The invention is suitable for the technical field of photocatalyst preparation, and provides a modified tubular g-C3N4 loaded Ni-CoP photocatalyst and a preparation method thereof. The preparation method comprises the following steps: calcining a carbon nitride precursor in stages to obtain tubular carbon nitride, stirring the tubular carbon nitride with a cobalt and nickel-containing compound and an alkaline compound, washing and drying to obtain a precipitate, calcining, mixing and grinding with a phosphorus-containing compound, calcining again, and modifying the product with polydopamine and polypyrrole to obtain the composite material. The photocatalyst modified by the polydopamine and the polypyrrole and loaded with the Ni-CoP by taking the tubular g-C3N4 as the carrier is obtained. According to the invention, three-in-one synergistic integration of'carrier-modifier-cocatalyst 'is realized, the prepared photocatalyst still keeps tubular morphology and has a larger specific surface area, the requirements of anode oxygen evolution reaction (OER) on rapid charge separation and transmission can be met, meanwhile, the light absorption range is widened, the solar energy utilization rate is increased, and a foundation is laid for efficient OER reaction.

The invention belongs to the technical field of conductive polymer materials, and particularly relates to a three-dimensional polypyrrole conductive material and a preparation method and application thereof. The preparation method of the three-dimensional polypyrrole conductive material comprises the following steps: (1) preparing a metal copper quantum dot and graphene oxide mixed dispersion liquid; (2) adding an oxidizing agent to obtain a reaction solution; (3) adding a pyrrole monomer, and carrying out a polymerization reaction to obtain a graphene oxide / polypyrrole composite dispersion liquid; and (4) adding a reducing agent to reduce the graphene oxide to obtain the three-dimensional polypyrrole conductive material. After the metal copper quantum dots are loaded on the graphene oxide sheet layer, the graphene oxide sheet layer becomes a structure-oriented core in subsequent polymerization, and finally the stable three-dimensional conductive composite material with graphene as a framework and polypyrrole nanosheets as connection points is formed. Compared with a traditional three-dimensional material formed by overlapping and integrating a two-dimensional graphene sheet layer and a conductive nanowire / nanorod, the three-dimensional material with the structure can form an efficient conductive path more easily under the condition of low filler content.

The invention provides a flexible electrochemical sensor, a preparation method and application. The flexible electrochemical sensor comprises a flexible substrate, three electrodes, a conductive strip, an external wire and a multi-cavity polypyrrole film, the three electrodes comprise a working electrode, a reference electrode and an auxiliary electrode and are printed on the flexible substrate; the conductive strip is connected with the three electrodes, the conductive strip is packaged through an insulating tape, and only working areas of the three electrodes are exposed; the external wire is pasted on the conductive strip through conductive silver adhesive. The multi-cavity polypyrrole film is modified on the surface of the working electrode. The technical problems that existing equipment is insufficient in portability, cannot meet the requirements of on-site rapid screening and real-time analysis of large-batch samples, and is difficult to realize on-site mobile detection are solved. The invention provides a feasible technical means for portable, mobile and on-site rapid detection of high-harm heavy metal ions such as Hg < 2 + > and Cd < 2 + >, and the method is simple to operate and extremely low in cost.

The invention relates to the technical field of conductive film substrate materials, in particular to a preparation method and application of a super-flexible stretchable conductive film substrate material. In order to solve the problems that an existing flexible conductive film is prone to fracture in the stretching process, a conductive layer is prone to stripping, and the conductive performance is seriously attenuated along with deformation, the invention provides a composite polyrotaxane enhanced matrix film which is capable of meeting the ultra-flexible and stretchable requirements. And an MXene-silver nanowire-polypyrrole ternary synergistic conductive network is combined, so that the problem that the conductivity is sharply attenuated in the deformation process is solved.

The application provides an octadecane-loaded cellulose-based composite phase change material evaporator and a preparation method and application thereof in seawater desalination, and belongs to the fields of photo-thermal conversion materials and separation technologies. Nanocellulose and polyvinyl alcohol are mixed to prepare an aerogel, octadecane is encapsulated in the pores of the aerogel by a vacuum impregnation method to obtain a composite phase change material aerogel, and the composite phase change material aerogel is coated with a non-woven fabric loaded with polypyrrole to obtain the octadecane-loaded cellulose-based composite phase change material evaporator. The evaporator is a composite phase change material evaporator based on the coupling of interfacial evaporation and phase change energy storage, solves the problems of discontinuous evaporation and low solar energy utilization rate caused by day and night alternation, has excellent light absorption performance, good heat insulation performance and sufficient water supply and the like, can be used for seawater desalination, and has the advantages of high evaporation rate, high energy conversion efficiency, salt precipitation prevention and the like.

The application discloses a carbon nitride / carbon felt electrode for a vanadium redox flow battery and a preparation method thereof, and belongs to the technical field of battery materials. The preparation method comprises the following steps: (1) soaking carbon felt in an ethanol solution containing an iron salt compound and then drying; (2) suspending the dried carbon felt in a closed container, adding a pyrrole monomer, and reacting at a constant temperature under an inert atmosphere to obtain a polypyrrole / carbon felt, which is cleaned and dried; (3) soaking the polypyrrole / carbon felt in an ethanol solution containing a zinc salt compound and then drying; (4) gradually increasing the temperature of the dried polypyrrole / carbon felt under an inert atmosphere to perform high-temperature carbonization, and obtaining carbon nitride / carbon felt; and (5) performing pickling and water washing on the carbon nitride / carbon felt, and obtaining the carbon nitride / carbon felt electrode after drying. In the application, the iron salt is used to catalyze the polymerization and deposition of pyrrole on the surface of the carbon felt, and finally high-temperature carbonization is performed to form various nitrogen-doped structures on the surface of the carbon felt, so that the liquid affinity and the electrochemical reaction activity of the electrode surface are significantly improved, and the energy efficiency of the battery is improved.

The invention relates to the technical field of papermaking, in particular to a preparation method of high-definition electronic screen protection paper. According to the method, regenerated cellulose fibers serve as main raw materials, functional composite fibers of a core-shell structure are constructed, a core layer is the regenerated cellulose fibers, a shell layer is a polypyrrole / graphene composite conductive layer, and the lasting antistatic performance is achieved; meanwhile, the surface-modified nano silicon dioxide aerogel particles are introduced, so that the optical performance and the mechanical strength are improved; then compounding with polyimide fibers modified by a silane coupling agent, adding a bio-based wet strength agent and a fluorocarbon defoaming agent, and carrying out the steps of plasma pretreatment, pulping, on-net papermaking, controllable drying, magnetron sputtering surface treatment and the like to prepare the protective paper. The obtained protective paper has the characteristics of being ultrathin, high in strength, high in light transmittance, lasting in antistatic property and the like, and is suitable for protection of high-end liquid crystal display screens and OLED screens.

The invention belongs to the technical field of medical wound materials, and relates to conductive nanofiber aerogel for preventing and treating stress injury and a preparation method thereof. The conductive nanofiber aerogel comprises nanofiber aerogel, a polypyrrole conductive network and a polydopamine hydrophilic layer, wherein the polypyrrole conductive network and the polydopamine hydrophilic layer are deposited in the nanofiber aerogel; the nanofiber aerogel is composed of nanofibers containing a first methylacryloylated polymer and polylactic acid and a second methylacryloylated polymer, the nanofibers are in staggered lap joint to form a three-dimensional skeleton, and the lap joint is wrapped by the second methylacryloylated polymer. The preparation method comprises the following steps: preparing nanofiber aerogel, and sequentially infiltrating the nanofiber aerogel into a pyrrole / FeCl3. 6H2O solution and a dopamine hydrochloride / Tris-HCl solution to react. The conductive nanofiber aerogel has good structural stability, biological safety, hydrophilic imbibition and pressure / seepage sensing capability, and can play an efficient role in prevention and treatment of pressure injury.

The invention belongs to the technical field of conductive polymer materials, and particularly relates to a high-conductivity polypyrrole composite material as well as a preparation method and application thereof. According to the preparation method, sulfhydrylated graphene oxide is taken as a substrate, metal copper quantum dots are taken as an auxiliary material, pyrrole monomers are subjected to in-situ polymerization on the surface of the sulfhydrylated graphene oxide to form a nanosheet structure, and the sulfhydrylated graphene oxide is reduced to form the high-conductivity composite material taking polypyrrole and graphene as substrates. After the graphene oxide is subjected to sulfhydrylation modification, the copper quantum dots are more uniformly distributed on the surface of the graphene oxide, the stability of the metal copper quantum dots is improved, and the stability of the graphene oxide in the reduction and processing processes can be improved. The polypyrrole nanosheets in the high-conductivity polypyrrole composite material are vertically distributed on the surface of the graphene, so that the porosity of the composite material is improved, the specific surface area is increased, the mechanical property of polypyrrole is improved, and the stability of the morphology of the polypyrrole is favorably maintained in the processing process.

A preparation method of a Cu-HHTP-PPy / stainless steel mesh oil-water separation membrane comprises the following steps: depositing polypyrrole on the surface of a stainless steel mesh to obtain a PPy / stainless steel mesh; pPy / stainless steel is subjected to plasma activating treatment and then placed in a copper acetate solution to be soaked, then the PPy / stainless steel is placed in HHTP, and the Cu-HHTP-PPy / stainless steel mesh separation membrane is obtained through electrochemical auxiliary soaking treatment. The Cu-HHTP-PPy / stainless steel mesh oil-water separation membrane prepared by the invention has super-hydrophilicity-underwater super-oleophobicity, also has electrothermal-photothermal properties, has an underwater oleophobic contact angle of 155 degrees, has efficient oil-water separation performance for different oils, has oil-water separation efficiency of 99% or more, also has relatively high permeation flux and excellent cycle stability, and can be applied to the field of oil-water separation. After circulation for more than 30 times, the oil-water separation efficiency still reaches more than 99%, and the permeation flux stably fluctuates in a relatively small range.

Exemplary secondary particles may include a porous polymer matrix comprising polyacrylonitrile (PAN) and polypyrrole (PPy), and a plurality of submicron-sized primary particles dispersed in the porous polymer matrix. The plurality of submicron-sized primary particles may comprise at least one of: carbon (C), silicon (Si), germanium (Ge), tin (Sn), or an alloy of a Group IVA element.

The invention discloses high-strength plastic particles as well as a preparation method and application thereof, and belongs to the technical field of high polymer material modification. The plastic particle is prepared from high-density polyethylene, hyperbranched polyesteramine containing a diurea group, a layered double metal hydroxide-polypyrrole nano hybrid, a maleic anhydride grafted ethylene-octylene copolymer, an antioxidant and calcium stearate. Wherein the hyperbranched polyesteramine containing the diurea group is prepared by reacting pentaerythritol with citric acid to generate a citrate framework and then reacting with diphenylmethane diisocyanate and 1, 4-butanediol; the layered double hydroxide-polypyrrole nano hybrid is prepared by carrying out in-situ polymerization and coating on magnesium-aluminum layered double hydroxides through a pyrrole monomer. According to the plastic particle, the tensile strength, the heat resistance and the flame retardance are remarkably improved through synergistic enhancement of the hyperbranched polyesteramine and the nano hybrid, and the plastic particle can be applied to the fields of automobile bumpers, high-voltage cable sheaths, weather-proof plates for buildings and the like.

The invention belongs to the technical field of aerogel, and particularly relates to high-strength conductive aerogel powder as well as a preparation method and application thereof. A high-conductivity polypyrrole composite material with a three-dimensional porous structure is prepared by taking thiolated graphene oxide as a carrier, polyamide acid salt is adopted as a precursor of polyimide, the solubility of the polyamide acid salt in a solvent is better, the solution is more stable, phase separation or gelation is not prone to occurring in advance, and uniform impregnation of the three-dimensional porous conductive material is facilitated; and the polyimide precursor is ensured to be fully permeated into pores of the graphene / polypyrrole network to form a more uniform composite structure. A polyimide framework in the aerogel powder wraps and fixes brittle graphene and polypyrrole in a three-dimensional network of the aerogel powder, so that the solvent resistance and the aging resistance of polypyrrole are improved, physical protection is provided for a conductive path, and the conductivity and the mechanical property of the composite material are improved.

The invention belongs to the technical field of catalyst preparation and methanol fuel cells, and particularly relates to a Pt-based composite catalyst, a membrane electrode and a preparation method and application of the Pt-based composite catalyst and the membrane electrode. The preparation method of the Pt-based composite catalyst comprises the following steps: carrying out a hydrothermal reaction on graphene oxide, nickel salt and a nitrogen source under an alkaline condition, sequentially carrying out dipping treatment and reduction treatment on the obtained Ni (OH) 2 / NC material and a platinum source in water, mixing the obtained Pt / Ni (OH) 2 / NC material with polypyrrole and water, and carrying out ultrasonic treatment to obtain the Pt-based composite catalyst. And dispersing the obtained Pt / Ni (OH) 2-PPy / NC catalyst in a first mixed solution obtained by heating polyvinyl alcohol, glycerol, ethylene glycol, trehalose and water, and carrying out circulating freezing-unfreezing treatment to obtain the Pt-based composite catalyst. When the Pt-based composite catalyst provided by the invention is used as an anode catalyst of a membrane electrode, the low-temperature performance of a methanol fuel cell can be remarkably improved.

The invention belongs to the technical field of membrane separation, and particularly relates to a preparation method of a self-supporting polypyrrole composite membrane and application of the self-supporting polypyrrole composite membrane in extraction of lithium from a salt lake. A polyoxazole polyhydrazide copolymer is used as a porous self-supporting base membrane, and a continuous polypyrrole functional layer is constructed on the surface of the base membrane through in-situ oxidative polymerization. A dynamic charge screening microenvironment is formed by a weak positive electricity characteristic and a highly conjugated structure in a polypyrrole molecular chain, and the interception efficiency on high-charge-density magnesium ions is enhanced through electrostatic interaction; and meanwhile, the rigid pore structure realizes selective permeation of lithium ions through size screening. Under the assistance of an external electric field, the polypyrrole layer shows excellent magnesium-lithium separation performance, lithium ions are enriched and recycled from the salt lake brine with the high Mg < 2 + > / Li < + > molar ratio, and the industrial bottleneck that ion flux and selectivity are difficult to consider at the same time in a traditional separation technology is solved.

The invention belongs to the technical field of microcapsules, and particularly discloses a current response type essence microcapsule as well as a preparation method and application thereof. The essence microcapsule is prepared by taking a chitosan-polypyrrole composite material as a wall material and essence as a core material and coating the essence through an in-situ polymerization method, and the essence microcapsule is prepared by applying a safe and low-voltage direct current by utilizing the good film-forming property and biocompatibility of chitosan and the rapid electric response characteristic of polypyrrole. And the polypyrrole is subjected to reversible oxidation-reduction reaction to initiate swelling or shrinkage of the wall material, so that accurate and reversible regulation and control of the release rate of the essence are realized. The method is simple in process, environment-friendly, safe and easy for large-scale production, solves the problem that the traditional aromatherapy release is uncontrollable, and has the advantages of quick response, high safety, environment friendliness and the like.

The invention discloses a preparation method of a wide-layer-distance novel aluminum dihydrogen phosphate layered material based on a microwave method, which comprises the following steps: (1) dispersing MXene in a solvent for ultrasonic dispersion, adding a Py monomer, and uniformly stirring; dropwise adding APS to carry out oxidative polymerization, and carrying out in-situ polymerization on polypyrrole on the surface of the MXene sheet layer; after the reaction is finished, centrifuging, washing and drying a product to obtain MXene coated PPy composite powder; (2) mixing phosphoric acid and aluminum hydroxide, stirring in a water bath to form a uniform gel precursor, adding the MXene-coated PPy composite powder into the precursor, and dispersing to obtain a modified precursor; (3) placing the modified precursor in a microwave reactor for reaction to obtain a product; and (4) carrying out cooling, suction filtration, washing, drying and crushing on the product to obtain the novel wide-layer-distance aluminum dihydrogen phosphate layered material. The method has the characteristic of efficient process design, and is mainly reflected in that the molecular interlayer spacing of the material is effectively widened, the microwave-assisted reaction time is short, the energy consumption is low, and the process is green and environment-friendly.

This application discloses a chloride ion corrosion resistant coating for a soft-pack current collector, comprising a first coating and a second coating. The first coating is applied to the surface of the current collector, and the second coating is applied to the surface of the first coating. The first coating is made of composite polypyrrole, and the second coating is made of polypyrrole. The composite polypyrrole is 8-hydroxyquinoline-doped polypyrrole, with a molar ratio of 8-hydroxyquinoline to pyrrole monomers of (1~3):100. This application addresses the problem of chloride ion corrosion of the current collector in the high-concentration magnesium chloride system of aqueous magnesium-ion soft-pack batteries by designing a double-layer anti-corrosion coating consisting of an 8-hydroxyquinoline-doped polypyrrole underlayer and a pure polypyrrole surface layer, with optimized doping polymerization and coating processes. This coating combines strong interfacial bonding, dense physical barrier, and in-situ active corrosion inhibition, significantly improving the corrosion resistance of the current collector and the cycle life of the battery, thus meeting the industrial processing needs of soft-pack batteries.

The invention discloses a long-life power lead-acid storage battery based on electrolyte-polar plate synergistic modification, and relates to the technical field of lead-acid storage batteries. According to the invention, the carbon nanotubes, the potassium sodium tartrate and the sodium sulfate are added into the electrolyte of the lead-acid storage battery, the graphene and the lanthanum oxide are doped into the positive active material, and the surface of the negative electrode is coated with the polypyrrole layer, so that the synergistic modification of the electrolyte and a polar plate is realized; according to the design, the conductivity is remarkably improved, the polar plate vulcanization is inhibited, and the structural stability is enhanced, so that the cycle life and the capacity retention ratio of the battery are greatly improved.

The present application relates to the technical field of micro-nano functional materials, and particularly relates to a high-efficiency light-heat conversion and wear-resistant super-hydrophobic coating, a preparation method thereof and an application thereof in ice prevention and removal, the preparation method adopts ammonium persulfate as an oxidant to initiate polymerization of pyrrole on the surface of halloysite nanotubes to generate polypyrrole, so as to obtain a halloysite nanotube composite material wrapped by polypyrrole. The super-hydrophobic coating is obtained by mixing the composite material with low-surface-energy polydimethylsiloxane, and the coating layer formed by the super-hydrophobic coating has the characteristics of high roughness and low surface energy, and thus has excellent hydrophobic performance. The coating layer also has good light-heat effect, flexibility, elasticity, mechanical performance, high-temperature resistance and durability. In addition, by adding hydrophobic nano-SiO2, the super-hydrophobic performance of the coating layer is further improved, and the hardness and wear resistance of the coating layer are also enhanced. Finally, the coating layer has excellent light absorption capacity and light-heat conversion efficiency, and realizes the performance of efficient protection and ice layer removal in the application of ice prevention and removal.

The invention relates to the technical field of medical textile materials, in particular to an anti-static medical fabric and a preparation method thereof.The anti-static medical fabric comprises an outer layer, a middle layer, an inner layer and carbon fiber grids embedded into the outer layer and the inner layer, the outer layer is made of nanofibers prepared by electrostatic spinning and comprises polyvinylidene fluoride, an F-ZnO / TiO2 composite antibacterial agent, carboxylated carbon nanotubes and grafted quaternary ammonium salt; the middle layer is a chitosan enhanced polytetrafluoroethylene film, and the surface of the middle layer is sequentially coated with a chitosan / silk fibroin transition layer and a polypyrrole conducting layer; the inner layer is a blend fiber fabric and comprises hollow polyester fibers, chitosan microsphere modified cotton fibers and carbon nanotube grafted polyamide fibers; the carbon fiber grids are embedded into the outer layer and the inner layer in a warp knitting mode with the density of 20-24 pieces / cm. According to the antistatic fabric, a four-stage conductive network is formed by the outer-layer carbon nanotubes, the middle-layer polypyrrole, the inner-layer grafted carbon nanotubes and the carbon fiber grids, so that the antistatic performance of the fabric is greatly improved.

The application provides a kind of nano photothermal hydrophobic material and preparation method and application, it is related to coating filler technical field.A kind of nano photothermal hydrophobic material, with polypyrrole nano photothermal material as core, surface is wrapped with fluorine-containing silane modified silica layer;Wherein polypyrrole nano photothermal material is with polypyrrole modified photothermal nano material;Its preparation method, polypyrrole nano photothermal material is dispersed in solvent, silane compound is added, silane compound is hydrolyzed, and polypyrrole nano photothermal material surface is wrapped with silica shell;Fluorine-containing silane is added, and fluorine-containing silane is grafted to silicon shell, to obtain nano photothermal hydrophobic material.The prepared nano photothermal hydrophobic material has photothermal conversion, superhydrophobic performance, and the preparation cost is lower, can be used for coating filler, under low temperature and high humidity environmental conditions, the deicing effect is remarkable, and the icing time is prolonged.

This invention belongs to the technical field of carbon nanotube modification and conductive paste, specifically relating to a method for preparing polypyrrole-grafted modified carbon nanotubes and a conductive paste, including: carboxylation pretreatment of carbon nanotubes: adding carbon nanotubes to a mixed acid solution and refluxing to obtain carboxylated carbon nanotubes; pyrrole monomer grafting: dispersing the obtained carboxylated carbon nanotubes in an organic solvent, adding pyrrole monomer and a condensing agent to react, obtaining pyrrole-grafted carbon nanotubes; and in-situ polypyrrole polymerization coating: dispersing the obtained pyrrole-grafted carbon nanotubes in an aqueous solution containing a surfactant, adding an oxidant and stirring to react. The following steps are performed: Premixing and coarse dispersion: The polypyrrole-grafted modified carbon nanotubes prepared by the above method are mixed with a first solvent, and a dispersant is added and stirred to obtain a premixed slurry; cyclic grinding and gradient dilution: The obtained premixed slurry is ground and dispersed in two stages to obtain a slurry; high-pressure homogenization and dispersion: The obtained slurry is homogenized, and after homogenization, vacuum degassing is performed, and then the slurry product is filtered and collected. The carbon nanotube conductive slurry of this invention has the characteristics of high solid content, high dispersion, high conductivity, and high stability.

A filtration membrane that includes a nonwoven textile, the nonwoven textile including polyethylene terephthalate. The filtration membrane includes a first layer of carboxylate-containing polymer disposed on the nonwoven textile. The filtration membrane further includes a second layer, which includes polypyrrole disposed on the first layer. The polypyrrole is connected to the first layer by hydrogen bonds between the amine groups present in the polypyrrole and the carboxylate groups present in the carboxylate-containing polymer. The membrane is effective in removing organic pollutant from water.

This invention relates to the field of lithium-ion battery technology, specifically to a silicon-carbon material, its preparation method, and its application. The silicon-carbon material includes a core and a coating layer covering at least a portion of the surface of the core. The core includes nano-silicon material. The coating layer includes a flexible conductive polymer layer and a carbon layer existing between the core and the flexible conductive polymer layer. The flexible conductive polymer layer includes a conductive polymer having a conjugated structure. The conductive polymer includes at least one of polyaniline, polypyrrole, polyacetylene, polythiophene, polyquinoline, polyfluorene, polybenzothiadiazole, and poly(p-phenylenevinylene). The mass ratio of the conductive polymer to the total mass of the carbon layer and the core is (0.05-0.2):1. This invention, by constructing a shell structure with a "carbon layer-flexible coating layer" on the core, enables the silicon-carbon material with this core-shell structure to solve the problems of volume expansion, poor conductivity, and SEI layer instability of silicon materials in lithium-ion batteries.

The invention relates to a degradable nerve repair membrane and a preparation method thereof, and belongs to the technical field of nerve repair membranes, the degradable nerve repair membrane comprises a biological composite structure inner layer, a support outer layer and a bonding layer, and the biological composite structure inner layer and the support outer layer are bonded through the bonding layer. According to the invention, polypyrrole with excellent electrochemical activity, environmental stability, controllable conductivity and poor mechanical properties and collagen nanofibers with high biocompatibility and capable of forming a nano-scale fiber network are adopted to form a conductive-biological composite structure as an inner layer through electrostatic spinning, and the PLGA porous membrane is prepared through 3D printing. A PLGA porous membrane with parallel axial microchannels on the surface is used as an outer layer, so that the membrane body structure can effectively guide directional growth of axons while ensuring conductivity, accurate preparation can be realized according to needs, the degradation period is matched with the nerve regeneration rate, and the degradation time can be regulated and controlled through the proportion of a copolymer; the repairing effect is prevented from being influenced by too fast or too slow degradation.

The invention discloses an anti-static and anti-abnormal-sound coating for a durable automobile sealing strip and a preparation method of the anti-static and anti-abnormal-sound coating in the field of functional coating materials. The coating is prepared from hydroxy acrylic resin, two special functional fillers, auxiliaries and a solvent. Wherein the vinyl functionalized polypyrrole-silver nanowire hybrid conductive fiber provides a lasting static dissipation path, and the epoxy siloxane grafted perfluoropolyether solid lubricating particles provide long-acting lubrication through chemical bonding so as to eliminate abnormal sound. When the coating is prepared, the resin and the adhesion promoter are dissolved in the mixed solvent to form a resin liquid, then the two functional fillers and the lubricating additive are added after being pre-dispersed, and finally the mixture and the cross-linking agent are mixed and cured. The coating is firmly attached to the surface of the sealing strip through chemical bonding and endows the sealing strip with stable and lasting anti-static, noise-reducing and wear-resisting performance, and the process is simple and convenient and suitable for large-scale production.

The application discloses a kind of photothermal regeneration monolithic adsorbent and its preparation method and the application of volatile organic compounds of light-controlled desorption.The photothermal regeneration monolithic adsorbent has three-layer structure, and the three-layer structure is respectively top layer photothermal layer, middle adsorption layer and substrate layer from top to bottom;The substrate layer is ceramic fiber;The middle adsorption layer is MCM-41;The top layer photothermal layer is polypyrrole.The three-layer structure design of the application can meet the periodic operation requirements of convenient adsorption-photothermal regeneration, widen the application range of light-controlled desorption VOCs adsorbent, and the regeneration adsorption efficiency can reach more than 80%.

The invention belongs to the technical field of macromolecular functional materials and electrochemical energy storage, and particularly relates to a polymer composite membrane with a dual-channel proton blocking function and application of the polymer composite membrane in a metal battery. The polymer composite membrane with the dual-channel proton blocking function is formed by compounding polyvinyl alcohol and zwitter-ion modified polypyrrole, and is an ion selective composite membrane capable of blocking proton transmission through dual channels and realizing efficient selective conduction of Zn < 2 + >. The hydrophilic-hydrophobic composite membrane inhibits proton dual-channel migration, keeps Zn < 2 + > high-efficiency conduction, has asymmetric wettability, has a contact angle facing an electrolyte side of 100-110 degrees and a contact angle facing a metal negative electrode side of 70-80 degrees, guarantees interface water resistance, promotes Zn < 2 + > interface transmission, and overcomes the technical defects of the existing hydrophilic-hydrophobic composite membrane.