1695 results about "PTFE - Polytetrafluoroethylene" patented technology

The invention discloses a low-creep polytetrafluoroethylene composite material and a preparation method thereof, the low-creep polytetrafluoroethylene composite material comprises the following raw materials by weight: 50-60 parts of polytetrafluoroethylene, 35-45 parts of perfluoroalkoxy resin, 15-25 parts of modified composite fiber, and 1-2 parts of a lubricant. Polytetrafluoroethylene and perfluoroalkoxy resin are blended according to a specific proportion to serve as a base material, a hot press molding process is matched, the core performance of the material is guaranteed, the molten perfluoroalkoxy resin can fully infiltrate and wrap the surface of the modified composite fiber under the driving of hot press pressure, and the performance of the composite fiber is improved. The composite material has the advantages that the composite material is high in mechanical strength, can form strong interface combination with PTFE (polytetrafluoroethylene) framework particles, can permeate and fill gaps of the PTFE framework particles, eliminates internal pores through a welding effect, and finally forms a highly-compact whole, so that the creep resistance of the composite material is remarkably improved.

The preparation method comprises the following steps: S1, mixing a hydrochloric acid solution with organic sodium sulfonate, then adding aniline and water, stirring and dissolving, then adding an oxidizing agent to carry out doping reaction, and carrying out suction filtration, washing, drying and grinding on a reaction product to obtain sodium-modified polyaniline; s2, uniformly mixing a negative electrode active material, a conductive agent and polytetrafluoroethylene, and then adding sodium polyaniline and an organic sodium supplement agent in a nitrogen or inert atmosphere for fibration treatment to obtain fibration powder; and S3, performing hot pressing on the fiberized powder onto the current collector to obtain the lithium ion battery. The prepared pre-sodium-modified negative electrode dry-method electrode has relatively good peeling strength and pole piece flexibility, and the condition that a traditional wet-method thick electrode is easy to crack is relieved; meanwhile, the dry-method electrode subjected to sodium modification treatment can induce uniform deposition of sodium ions, so that the dynamic performance of the whole sodium battery is improved, the problem of cyclic sodium precipitation is avoided, and the service life of the battery is further prolonged.

The invention discloses a broadband high-gain microstrip antenna, which is provided with a rectangular radiation patch, a symmetrical grooving parasitic patch, a dielectric substrate, a metal bottom plate and a polytetrafluoroethylene support column, the rectangular radiation patch and the symmetrical grooving parasitic microstrip are attached to the upper layer of the dielectric substrate; a certain distance is formed between the rectangular radiation patch and the slotted parasitic patch and is used for coupling electromagnetic waves; the upper dielectric substrate is provided with two through holes for feeding; the metal bottom plate and the upper-layer substrate are fixed through four polytetrafluoroethylene supporting columns; a space is reserved in the middle to form an air substrate; and an SMA interface is arranged below the floor. According to the microstrip patch antenna, the forms of differential feeding and parasitic patch adding are adopted, the high gain and broadband characteristics of the microstrip patch antenna are achieved, the profile of the antenna is kept within 0.1 lambda, and the unipolar radiation pattern is achieved while high performance is guaranteed. In addition, the antenna is relatively simple in technical structure and convenient for later processing, can be used as an array unit for arraying, and meets the requirements of modern communication.

The invention relates to the technical field of gas sensors, and particularly discloses an electrochemical formaldehyde sensor electrode, a preparation method thereof and an electrochemical formaldehyde sensor. The electrochemical formaldehyde sensor comprises an electrochemical formaldehyde sensor electrode and a binary electrolyte, the electrochemical formaldehyde sensor electrode comprises a polytetrafluoroethylene film, the polytetrafluoroethylene film is coated with slurry for an electrochemical formaldehyde sensor electrode; and the slurry is formed by mixing nano manganese dioxide, platinum carbon and a Nafion solution. According to the electrochemical formaldehyde sensor, the electrode prepared from the slurry formed by mixing the nano manganese dioxide, the platinum carbon and the Nafion solution has relatively high catalytic activity, so that the sensor shows extremely high sensitivity and extremely good linearity on formaldehyde, and the electrochemical formaldehyde sensor has relatively high catalytic activity by regulating and controlling the proportion of the binary electrolyte. The electrochemical formaldehyde sensor has the advantages of high sensitivity, low cost, fast response, high detection precision and the like.

The invention discloses a novel electrolytic tank pipeline filter and a self-cleaning system. The novel electrolytic tank pipeline filter comprises a multi-stage filtering part, the self-cleaning system and an intelligent control system, the multi-stage filtering part comprises multi-stage filter elements arranged in the material pipeline, and the multi-stage filter elements are arranged from large to small according to the filtering particle size to form a filtering gradient; the self-cleaning system acts on the multi-stage filter element part at the same time or in a time-sharing manner on the basis of a fluid reverse recoil principle; the self-cleaning system is combined with pulsating flushing control, so that the filter element is separated from a filter cake at low loss; the multi-stage gradient filtration is adopted, impurities are efficiently and accurately intercepted, the filter elements with the particle sizes from large to small are arranged in a gradient mode, the first-stage titanium alloy filter element intercepts large particles, the second-stage polytetrafluoroethylene membrane filters tiny impurities, the efficiency is improved through graded interception, the loss of the filter elements is reduced, and the material purity and the hydrogen production quality are guaranteed. The multi-element self-cleaning technology is adopted, low-loss deep cleaning is achieved, and the self-cleaning system integrates multiple technologies such as fluid reverse backflushing, pulsating flushing, ultrasonic vibration and a pulsed electric field.

The invention discloses a composite diaphragm, a preparation method thereof and a lithium ion battery. The composite diaphragm comprises a base membrane and a composite functional layer arranged on one side of the base membrane, and the composite functional layer is formed by compounding an independent high-temperature-resistant polymer porous membrane and a polytetrafluoroethylene porous membrane. Preferably, the high-temperature-resistant polymer porous membrane comprises one or more of an aramid fiber membrane and a polyimide membrane. By compounding the high-temperature-resistant polymer porous membrane and the polytetrafluoroethylene porous membrane, the overall thinning of the diaphragm is realized on the premise of ensuring excellent mechanical strength and thermal stability, and the ion migration impedance is effectively reduced, so that the rate capability, the cycle life and the safety performance of the lithium ion battery are remarkably improved.

The utility model discloses a graphene carbon heat-conducting fin and reversible desiccant membrane combined membrane component for demisting an automobile lamp, a graphene carbon heat-conducting fin layer comprises a heat absorption area and a heat conduction area, the heat absorption area is arranged towards a heating element in the automobile lamp and is used for absorbing infrared heat, the heat conduction area is formed by extending from the heat absorption area to a cold area which is easy to fog, and the reversible desiccant membrane is arranged in the heat conduction area. The heat is exported for demisting; the reversible drying agent diaphragm layer is arranged in the heat conduction area and comprises a supporting framework layer, a functional layer and active filler; the support framework layer is an expanded polytetrafluoroethylene membrane with a microporous structure, the fog absorbent slurry forms a functional layer on the surface of the expanded polytetrafluoroethylene membrane, and the fog absorbent slurry is embedded into the microporous structure to form active filling. According to the utility model, heat generated by electrical elements in the automobile lamp is utilized to realize moisture absorption and desorption circulation of the reversible drying agent diaphragm, so that the fogging problem of a novel flat and long and narrow belt type automobile lamp is effectively solved, the structure is simple, and the cost is low.

The invention discloses a polytetrafluoroethylene microporous membrane as well as a preparation method and application thereof, and belongs to the technical field of polytetrafluoroethylene microporous membranes. According to the invention, the polytetrafluoroethylene microporous membrane added with different amounts and different types of lubricants is prepared by a thermomechanical two-way stretching method, and the pore structure is researched. According to the invention, the entanglement density, the average pore size, the porosity, the hydrophobic property and the mechanical property can be regulated and controlled by changing the quantity and the type of the lubricant. And a new idea is provided for preparing the high-performance PTFE biaxially oriented film, and the method has a good application prospect.

The invention discloses a polytetrafluoroethylene compensator with good corrosion resistance and a preparation method thereof.The polytetrafluoroethylene compensator is composed of a corrugated pipe, a pipe connecting flange and an end flange, the pipe connecting flange and the end flange are located at the two ends of the corrugated pipe, the corrugated pipe is composed of a lining layer and a base material layer, and the base material layer is made of stainless steel; the preparation method comprises the following steps: firstly, carrying out surface grafting on nano aluminum oxide by using isocyanate silane, and introducing an active reaction group; then part of active groups react with benzotriazole, so that the corrosion inhibition and adhesion enhancement functions are realized; finally, enabling the residual active groups to react with hydroxylated polytetrafluoroethylene activated by alkali treatment, and coating a chemical inert layer on the surface of the residual active groups; the obtained core-shell structure functional filler is dispersed in epoxy resin to prepare a coating, and after the coating is coated on a stainless steel base material and cured, a high-performance compensator with high hardness, strong adhesive force, excellent corrosion resistance and weather resistance is formed.

The invention provides a light and heat-dissipating aerospace small-sized calibration lamp mounting seat, which relates to the technical field of aerospace optical small-sized calibration lamp structure fixation, and comprises a substrate mounting seat module, a conductive module, an insulating module and a heat conduction module. The conductive module comprises two chamfered semi-cylindrical conductive copper blocks and two wires with soldering lugs; the insulating module comprises an insulating polyimide isolating layer; the heat conduction module comprises a heat conduction insulation pad which is installed above two copper blocks, the positive electrode and the negative electrode of the two copper blocks are separated through an insulation polytetrafluoroethylene isolation layer, and the semi-cylindrical conductive copper blocks, the polytetrafluoroethylene isolation layer and the substrate installation base are positioned through pin holes. The soldering lug wire is installed on the left semi-cylindrical conductive copper block and the right semi-cylindrical conductive copper block in a pressing mode through top screws. The structure distribution is friendly, the anti-seismic performance is good, a good heat dissipation way is provided for the calibration lamp, and an effective and feasible implementation scheme is provided for fixing the small aerospace calibration lamp.

The invention belongs to the technical field of all-solid-state lithium batteries, and particularly relates to a densified sulfide all-solid-state battery composite positive electrode material and a preparation method and application thereof. The preparation method of the composite positive electrode material comprises the following steps: (1) raw material pretreatment: mixing a positive electrode active substance, a sulfide solid electrolyte and an additive according to a predetermined mass ratio under the protection of an inert atmosphere, and carrying out mechanical grinding to obtain composite positive electrode powder; the additive is Li3PO4 (lithium phosphate); (2) isostatic pressing pretreatment: performing hot isostatic pressing treatment on the composite positive electrode powder, and then controlling the cooling rate to cool to room temperature to obtain a densified composite positive electrode blank; (3) adding a conductive agent and a binder into the densified composite positive electrode blank, and mixing; the composite positive electrode material is obtained; the binder is formed by compounding nano-scale polytetrafluoroethylene and micron-scale polytetrafluoroethylene according to a mass ratio of 1: 2-1: 4.

The invention discloses a high-performance ship cable and a preparation process thereof, relates to the technical field of cables, and aims to solve the problem that an existing cable is insufficient in environmental adaptability, safety, electromagnetic compatibility and the like, the cable comprises a conductor, an insulating layer, a longitudinal waterproof structure, a shielding layer and a sheath layer from inside to outside, the conductor is of a multi-strand soft copper wire stranded structure, and the copper content of the multi-strand soft copper wire stranded structure is larger than or equal to 99.95%; the DC resistance at 20 DEG C is less than or equal to 0.01724 omega mm / m; the insulating layer is made of cross-linked polyethylene or polytetrafluoroethylene and can resist 1.5 times of rated voltage for 1 minute without breakdown; the longitudinal waterproof structure comprises a water-blocking tape and water-blocking paste; the shielding layer is of a double-layer structure, and the shielding effectiveness is larger than or equal to 60 dB The sheath layer is made of a low-smoke halogen-free flame-retardant material and contains an antioxidant and an ultraviolet light absorber, the preparation process comprises six steps of conductor preparation, insulating layer forming and the like, parameters are accurately controlled, the cable can work at the temperature of-40 DEG C to 85 DEG C, is salt-fog-resistant, waterproof and flame-retardant, is adaptive to the complex environment of ships and warships, and the operation reliability and safety are improved.

The invention discloses a wastewater sampling device for constructional engineering, and relates to the field of engineering wastewater monitoring, the wastewater sampling device comprises a support frame and a driving mechanism, an annular plate is arranged below the support frame, a cross-shaped plate is fixed on the outer wall of the annular plate, four end parts of the cross-shaped plate are respectively provided with a hole for placing a sealing tank, a PH sensor is arranged on a support leg on one side of the support frame, and the PH sensor is connected with the driving mechanism. The bottom openings of the four sealing tanks are all provided with sampling barrels, and the four sampling barrels are respectively made of a polytetrafluoroethylene material, a brown glass material, a high-density polyethylene material and a common polyethylene material and are adaptive to highly corrosive wastewater, organic matter and oil wastewater, heavy metal wastewater and conventional neutral wastewater; the sampling barrels made of four special materials cover mainstream wastewater scenes of constructional engineering, the limitation that a single material is adaptive to various types of wastewater is avoided, the sampling barrels made of corresponding materials can be switched to sampling stations according to the basic types of the wastewater, the materials of the sampling barrels are ensured to be completely matched with the types of the wastewater, and detection data can truly reflect wastewater components.

The invention discloses a fluorescent optical fiber temperature measuring device for a transformer winding. The fluorescent optical fiber temperature measuring device comprises an optical fiber temperature sensor, a control and interaction unit, a transmission and switching unit, a flange fixing unit and a protection unit, through the complete system design of the optical fiber temperature sensor, the control and interaction unit, the transmission and switching unit, the flange fixing unit and the protection unit, a whole-process closed loop from temperature sensing and signal transmission to data processing and alarm control is realized. The optical fiber temperature sensor is in direct contact with a winding hot spot, temperature measurement is performed based on the fluorescence decay time principle, the problems that a traditional indirect calculation method is large in error and an electrical sensor is poor in anti-interference performance are solved, system integration is achieved, and monitoring is more accurate. The optical fiber temperature sensor adopts a polyimide optical fiber core and a polytetrafluoroethylene sheath, has no metal part, is resistant to high pressure, and is completely immune to EMI / RFI; a signal isolation unit of the control and interaction unit further blocks external interference and ensures stable work in a strong electromagnetic environment.

The invention discloses a sealing gasket for an energy storage hydrogen production electrolytic cell and a preparation method of the sealing gasket, and belongs to the technical field of sealing gasket production. Comprising the following steps: carrying out surface treatment on glass fibers, and carrying out hot-pressing mixing with a polyimide block copolymer to obtain a supporting layer; glass fibers are subjected to surface treatment and then hot-pressed and mixed with the polyimide block copolymer to obtain a supporting layer; the polytetrafluoroethylene, the triallyl isocyanurate and the nano silicon dioxide are mixed and stirred, and the sealing layer is obtained through injection molding after radiation crosslinking; the epoxy resin matrix, the modified fluororubber and the anti-aging agent are subjected to banburying and vulcanization to obtain the protective layer; and the supporting layer, the sealing layer and the protective layer are sequentially stacked, hot-pressed and compounded to obtain the sealing gasket. The sealing gasket for the energy storage and hydrogen production electrolytic cell is improved in structural stability and has good creep resistance and chemical resistance.

The invention relates to the technical field of wires and cables, and particularly discloses a mining extrusion-resistant wear-resistant cable with a tensile enhancement layer and a preparation method thereof. The invention relates to a mining extrusion-resistant wear-resistant cable with a tensile enhancement layer. The mining extrusion-resistant wear-resistant cable comprises a wire core conductor, an insulating layer, an inner sheath, the tensile enhancement layer and an outer sheath from inside to outside, the outer sheath and the inner sheath are made of the same raw material; the inner sheath comprises the following raw materials: high-density polyethylene, epoxidized soybean oil, a compound lubricant, a compound wear-resistant filler, a flame retardant, an antioxidant and an ultraviolet light absorber; the compound lubricant is a compound of calcium stearate and oxidized polyethlene wax; the compound wear-resistant filler is a compound of nano polytetrafluoroethylene and silicon carbide. According to the extrusion-resistant and wear-resistant cable for the mine, the tensile strength and the elongation at break can reach 24.9 MPa and 450% to the maximum extent, the wear resistance is 96 mm < 3 > to the minimum extent, and the wear resistance and the pressure resistance of the extrusion-resistant and wear-resistant cable for the mine are improved.

The present application belongs to the technical field of batteries. Disclosed are a dry-method electrode film and a preparation method therefor, an electrode and a battery. The method of the present application comprises: mixing polytetrafluoroethylene, an active substance and an electrically conductive agent, and crushing same, so as to obtain a crushed mixture; subjecting the crushed mixture to primary airflow grinding and shearing, so as obtain a ground and sheared mixture, wherein conditions of the primary shearing comprise: the airflow temperature is -10 to 10°C, the airflow pressure is 0.7-0.9 MPa, and the rotation speed is 8000-12000 rpm; subjecting the ground and sheared mixture to secondary airflow grinding, shearing and fibration, so as to obtain a fibration material; and subjecting the fibration material to a secondary fibration treatment, so as to obtain a dry-method electrode film. The method of the present application can significantly improve the tensile strength of an electrode film, improve the liquid absorption rate of an electrode and reduce the resistivity of the electrode.

The invention discloses a carbon-coated nickel-based super-hydrophobic catalyst as well as a preparation method and application thereof, and belongs to the technical field of catalysts and high alcohol synthesis. The preparation method comprises the following steps: dissolving nickel salt and citric acid in water, and then heating and stirring the obtained mixed solution to obtain a precursor; roasting the precursor in an inert atmosphere to obtain a carbon-coated nickel-based catalyst; and carrying out ball-milling mixing on the carbon-coated nickel-based catalyst and polytetrafluoroethylene to obtain the carbon-coated nickel-based super-hydrophobic catalyst. According to the invention, the carbon-coated nickel-based catalyst is firstly prepared, then the carbon-coated nickel-based catalyst is coupled with the hydrophobic polymer polytetrafluoroethylene to form a new super-hydrophobic catalyst, and the nickel-based catalyst and the polytetrafluoroethylene are subjected to ball-milling mixing, so that the hydrophobic property of the nickel-based catalyst is improved, the water poisoning phenomenon of the catalyst is relieved, and further coupling of low-carbon alcohol to higher alcohol is promoted; the yield of the high alcohol and the selectivity of the C6 < + > high alcohol are improved, and the method has a wide application prospect.

The invention relates to the field of nylon materials, in particular to a high-temperature-resistant nylon / PTFE composite material and a preparation method and application thereof. The high-temperature-resistant nylon / PTFE composite material is prepared from the following raw materials in parts by weight: 40 to 90 parts of modified nylon, 0.5 to 15 parts of polytetrafluoroethylene, 5 to 15 parts of composite filler, 1 to 3 parts of compatilizer and 0.1 to 0.3 part of antioxidant, the composite filler comprises modified calcium fluoride whiskers, modified glass beads and modified hexagonal boron nitride. Through collaborative design of multiple performance dimensions such as interface, heat resistance, wear resistance, mechanics and the like, the composite material has excellent high-temperature stability, low-friction wear resistance and high-strength mechanical performance at the same time, has remarkable breakthrough in comprehensive performance and service life compared with a traditional nylon-based composite material, and has extremely high technical innovation and practical value.

The present application relates to the field of fine chemical industry, and particularly to a preparation method of sodium tetrafluoroborate; the present application uses hydrofluoric acid, boric acid and soda to prepare sodium tetrafluoroborate; the present application uses evaporation, polar organic solvent dissolution, separation, modified polytetrafluoroethylene membrane fine filter filtration, cooling crystallization and the like to purify sodium tetrafluoroborate; the present application uses a polytetrafluoroethylene membrane filter core, vinyl guanidine, sodium acrylate, 1-allyl-3-ethyl imidazole tetrafluoroborate, an initiator and deionized water to prepare a modified polytetrafluoroethylene membrane filter core; the modified polytetrafluoroethylene membrane filter core prepared by the present application can effectively improve the purity of sodium tetrafluoroborate; the present application has the characteristics of low cost, simple process, low toxicity and environmental friendliness; the present application has mild reaction conditions in the preparation process, is easy to operate, has low energy consumption and high product purity.

The present application relates to the technical field of lead-acid battery electrode, aiming at the problem of thick lead paste on the existing lead-acid battery plate, large resistance during charging and poor rate discharge performance of the battery, a preparation method of lead-acid battery membrane electrode is disclosed, comprising the following steps: adding a binder to the prepared lead paste, rolling the lead paste containing the binder on the lead skin to form a lead paste film layer, immersing the lead skin and the attached lead paste film layer in a sulfuric acid solution, and solidifying and drying after taking out; the binder is polytetrafluoroethylene emulsion or a binder containing polytetrafluoroethylene emulsion. Unlike the high molecular film attached to the surface of the lead-acid battery plate in the prior art, the present application obtains a thin film electrode with thin thickness, uniform active material dispersion, large active material and current collector contact area and good conductivity, and has the advantages of large rate charge and discharge cycle.

The invention relates to the technical field of high polymer materials, and discloses a preparation method of high-dielectric-constant epoxy resin. The method comprises the following steps: (1) carrying out copolymerization reaction on bisphenol A epoxy resin and polytetrafluoroethylene at 80-100 DEG C for 2-3 hours; (2) adding a dicyandiamide curing agent into the reaction product obtained in the step (1), and carrying out gradient heating for curing; and (3) adding surface-modified barium titanate nanoparticles into the product obtained in the step (2), performing ultrasonic treatment, performing casting molding, and performing annealing treatment. According to the method, through molecular level design, the dielectric constant is remarkably improved while the excellent mechanical property of the epoxy resin is maintained, the dielectric loss (tan delta) and the thermal stability are optimized, and a high-performance base material is provided for electronic devices.

A method for producing modified polytetrafluoroethylene including: polymerizing tetrafluoroethylene and a modifying monomer in an aqueous medium in the presence of a polymer (I) containing a polymerization unit (I) based on a monomer represented by the following general formula (I) to obtain a modified polytetrafluoroethylene:wherein X1 and X3 are each independently F, Cl, H, or CF3; X2 is H, F, an alkyl group, or a fluorine-containing alkyl group; A0 is an anionic group; R is a linking group; Z1 and Z2 are each independently H, F, an alkyl group, or a fluorine-containing alkyl group; and m is an integer of 1 or more. Also disclosed is a composition containing the modified polytetrafluoroethylene and the polymer (I).

A novel sheath catheter is designed for broad applicability in intravascular percutaneous procedures, featuring a proximal hub, an elongate shaft, and a distal radiopaque marker band for enhanced visualization. The elongate shaft incorporates a tri-layer construction: a lubricious polytetrafluoroethylene (PTFE) inner polymer liner to minimize friction during device passage, a braided reinforcement skeleton for superior tensile strength and kink resistance, and a durable, wear-resistant outer jacket to withstand navigational stresses. This configuration yields a low-profile design with exceptional pushability, flexibility, and trackability, enabling access to small, tortuous vessels while maintaining structural integrity.

The invention discloses a short-process coagulation water purification treatment method and equipment based on a polytetrafluoroethylene membrane. The method relates to the technical field of short-process coagulation water purification treatment, and comprises the following steps: firstly, adding an agent into the electronic industrial wastewater to complete pretreatment, then filtering by adopting a polytetrafluoroethylene membrane to realize water purification, continuously collecting and analyzing short-process coagulation water purification data of the electronic industrial wastewater, and timely optimizing and adjusting a treatment scheme. Pollutants in a water body are converted into micro-flocs by adding a medicament, the micro-flocs are intercepted by a polytetrafluoroethylene membrane to remove the pollutants in the water body, a real-time monitoring sensor collects water quality data and membrane operation data, and a short-process coagulation quality quantized value and a purification accuracy quantized value are obtained through further analysis. Compared with a judgment value in a database, the method optimizes a medicament adding scheme and a membrane operation scheme, improves the process applicability, and solves the problems of insufficient accuracy and adaptability of a short-process water purification treatment method in the prior art.

The invention discloses a high-transmission-rate optical cable with a low attenuation characteristic and a preparation method thereof, belongs to the technical field of optical cable communication, and is used for solving the technical problem that the transmission performance and the mechanical performance of an optical cable in the prior art need to be further improved. According to the optical cable, the polytetrafluoroethylene is filled with the modified graphene and the molybdenum disulfide, so that the mechanical property and the environmental adaptability of the optical cable are effectively improved, and the transmission speed of the optical cable is also effectively improved.

The invention discloses a high-performance polyether-ether-ketone modified sealing material and a preparation method thereof, and relates to the technical field of sealing materials. The high-performance polyether-ether-ketone modified sealing material is prepared from the following raw materials in percentage by mass: 5 to 10 percent of polytetrafluoroethylene micro powder, 5 to 10 percent of graphene nanosheets, 10 to 15 percent of silicon carbide whiskers, 0.5 to 2 percent of silane coupling agent and the balance of polyether-ether-ketone, the preparation method of the high-performance polyether-ether-ketone modified sealing material comprises the following steps: mixing graphene nanosheets with a silane coupling agent, deionized water and absolute ethyl alcohol, carrying out ultrasonic dispersion for 2 hours, carrying out pretreatment to obtain a graphene nanosheet suspension, mixing the graphene nanosheet suspension with silicon carbide whiskers, polytetrafluoroethylene micro powder and polyether-ether-ketone, carrying out melt blending, and carrying out compression molding to obtain the high-performance polyether-ether-ketone modified sealing material. And cooling to obtain the high-performance polyether-ether-ketone modified sealing material.

The present invention discloses a large-area light-rechargeable zinc-ion soft-pack battery and its preparation method and application. The method comprises the following steps: folding an aluminum-plastic film in half along the center of its edge, processing an optical window in the center portion of one side of the aluminum-plastic film; defining a bonding area around the optical window, and processing a hole array in the bonding area; bonding an expanded polytetrafluoroethylene film to the bonding area of ​​the aluminum-plastic film, and UV curing the film to obtain an aluminum-plastic film bonded with the expanded polytetrafluoroethylene film; rolling a light-positive electrode material onto a titanium mesh to obtain a light-rechargeable positive electrode sheet; and coating a zinc metal negative electrode sheet, a GF / D glass fiber separator, and a light-rechargeable positive electrode sheet in the aluminum-plastic film bonded with the expanded polytetrafluoroethylene film from bottom to top, adding an electrolyte, and performing heat-pressing and edge-sealing to obtain a large-area light-rechargeable zinc-ion soft-pack battery. The present invention successfully overcomes the technical bottleneck of traditional light-rechargeable zinc-ion soft-pack batteries by optimizing the optical window design and the light-storage synergistic structure.

The invention provides an ultrathin aramid nanofiber-based composite solid electrolyte and a preparation method and application thereof, and belongs to the technical field of polymer electrolytes and metal secondary batteries, the method comprises the following steps: adding LLZTO into anhydrous acetonitrile, stirring, then carrying out ultrasonic dispersion, then adding PEO and LiTFSI, carrying out constant-temperature stirring treatment, and then carrying out vacuum drying to obtain the ultrathin aramid nanofiber-based composite solid electrolyte. A mixed electrolyte solution is obtained; a porous aramid nanofiber aerogel film is soaked in the mixed electrolyte solution, and a soaked aramid nanofiber-based composite solid electrolyte is obtained; and placing the impregnated aramid nanofiber-based composite solid electrolyte on a polytetrafluoroethylene film, and carrying out vacuum drying and stripping to obtain the ultrathin aramid nanofiber-based composite solid electrolyte. The problems that an existing solid electrolyte is poor in mechanical property, low in ionic conductivity and unstable in electrochemical performance can be solved.

The invention provides an innovative method for optimizing a coating process of polytetrafluoroethylene (PTFE) inside a steel lining, and belongs to the technical field of industrial coating. According to the method, an advanced optimization adversarial neural network (GAN) and gradient enhanced decision tree (GBDT) technology is fused, a multi-layer spraying control strategy is introduced, the GAN can generate single-layer or multi-layer spraying parameters according to requirements, and the spraying rhythm is dynamically adjusted, so that the bonding strength and corrosion resistance of a coating are greatly improved. The historical data is deeply analyzed by the GBDT, so that a more accurate input parameter weight is provided for the GAN, and the prediction capability is further enhanced. The optimization method is widely applied to equipment such as steel lining PTFE corrosion-resistant pipelines, fluorine-lined storage tanks, valves, compensators and the like, the coating consistency and the overall performance of products are remarkably improved, and higher value is brought to industrial application. In a word, through intelligent and refined coating process optimization, double improvement of the performance and economic benefits of the PTFE coating is achieved.