3278 results about "Surface coating" patented technology

The invention discloses a dynamic path planning and self-adaptive control method and system for a coating robot, and relates to the technical field of coating automation. The method comprises the following steps: acquiring point cloud data through three-dimensional scanning equipment, constructing a dynamically updated workpiece curved surface model, and extracting curvature, edge and high-curvature mutation region features; a spraying path is generated based on a reinforcement learning algorithm, and path density, speed and coating supply are dynamically adjusted for a high-curvature area; distance, force feedback and environment parameters are fused, and mechanical arm and spray gun parameters are dynamically adjusted; dividing operation sub-areas and distributing tasks based on robot capability characteristics to realize multi-machine cooperation; and fault redundancy control and multispectral imaging are added to optimize the coating quality. The system comprises a sensing module, a decision-making module, an execution module, a redundancy control module and a communication module. According to the invention, the uniformity of the complex curved surface coating, the multi-machine cooperation efficiency and the system anti-interference capability are improved, and the method is suitable for spraying large workpieces such as aircraft fuselages and high-speed rail vehicle bodies.

The invention discloses a circuit board surface coating quality detection method and device, and the method comprises the steps: obtaining an image of a coating surface, and removing noise interference; brightness gradient information is extracted, and when the brightness gradient information exceeds a preset brightness threshold value, it is judged that defects exist, and a potential defect area is obtained; a potential defect area is separated from the background, image brightness distribution is mapped into plating depth data, and surface topography parameters are calculated; the defect areas are classified, edge optical characteristics are extracted from coating edge areas in the image, the coating thickness difference is calculated, the thickness difference and the edge optical characteristics are fused to obtain fusion characteristics, and an image is generated through an algorithm; and calculating the brightness dispersion degree of the plating layer edge and the local thickness difference of each edge region, carrying out weighted average on the corresponding pixel gray value to obtain a fused comprehensive defect region image, and calculating to obtain the comprehensive quality score of the plating layer. The method can accurately detect the quality of the circuit board.

The invention belongs to the technical field of hydraulic engineering detection, and particularly provides a hydraulic metal structure surface coating defect detection method and a hydraulic metal structure surface coating defect detection device based on image processing. In a wet and dry alternating environment of a hydraulic metal structure, a multispectral imaging device is used for acquiring an image of a metal structure surface coating, and the acquired multispectral image is preprocessed; a complete and clear image to be detected is obtained; extracting features related to coating defects from the preprocessed to-be-detected image, wherein the features comprise spectral features, texture features and color features; and inputting the extracted features related to the coating defects into a pre-trained classification model, and classifying the coating defects through the classification model. According to the method and the device, the state of the coating can be comprehensively described, and the type and the degree of the coating defect can be accurately identified.

The invention discloses a preparation method of low-loss high-saturation iron-nickel soft magnetic powder. Comprising the following steps of S1, alloy smelting and S2, atomization. S3, carrying out ball milling treatment; s4, annealing treatment; s5, carrying out surface coating; the low-loss high-saturation iron-nickel soft magnetic powder is prepared from the following raw materials in percentage by weight: 77.6%-78.2% of electrolytic nickel, 21.4%-22.3% of electrolytic iron and 0.1%-1% of an additive, the performance of the iron-nickel soft magnetic powder and a magnetic powder core prepared by the process is improved in multiple aspects, and the iron-nickel soft magnetic powder has great application advantages.

The invention relates to the technical field of metal surface coating detection, and discloses an intelligent detection method for metal surface coating defects. The method comprises the following steps: firstly, acquiring multispectral imaging data to carry out three-dimensional topology reconstruction to generate an initial three-dimensional feature model; dividing a detection area, and marking a defect core area, a transition area and a normal area; a high-resolution industrial camera is used for collecting dynamic morphology updating model parameters, identifying a surface abnormal area and calculating a theoretical contact distance with a probe, and then a scanning track is planned. In the detection process, the distance is monitored in real time, detection points are dynamically adjusted, scanning parameters are corrected according to contact stress, detection sub-domain scanning is divided, secondary imaging analysis is conducted on a scanning area, and scanning is supplemented if missing. According to the invention, the detection precision, intelligence and adaptive ability are improved, comprehensive and fine detection is realized, and the method has important application value in the field of metal surface coating detection.

The invention relates to the technical field of steel pipe detection, and discloses a surface coating process detection method and device for steel pipe production, and the method comprises the steps: obtaining surface topography data and temperature distribution data; performing roughness analysis according to the surface topography data to obtain roughness parameters; performing wetting simulation according to the roughness parameter and a preset initial condition to obtain permeation data and a stress distribution result; parameter optimization is carried out according to the permeation data and the stress distribution result, the spraying pressure adjustment amount and the spraying angle adjustment amount are obtained through calculation, and then optimal spraying parameters are obtained; inputting the temperature distribution data into a thermal stress distribution model to obtain thermal stress distribution data, and performing process optimization according to the thermal stress distribution data to obtain optimal curing parameters; and processing the coating on the surface of the steel pipe according to the optimal curing parameters and the optimal spraying parameters. The method has the following effect that the detection precision of the surface coating of the steel pipe can be improved.

A method includes forming a dielectric layer over a source / drain region. An opening is formed in the dielectric layer. The opening exposes a portion of the source / drain region. A conductive liner is formed on sidewalls and a bottom of the opening. A surface modification process is performed on an exposed surface of the conductive liner. The surface modification process forms a surface coating layer over the conductive liner. The surface coating layer is removed to expose the conductive liner. The conductive liner is removed from the sidewalls of the opening. The opening is filled with a conductive material in a bottom-up manner. The conductive material is in physical contact with a remaining portion of the conductive liner and the dielectric layer.

The invention relates to a material that is at least partially transparent and that has structures introduced into its internal volume after material production, which modify the volume with respect to its optical properties compared to the unstructured volume. The material according to the invention is characterized by its formation as an at least partially transparent surface coating, wherein the structure comprises modification bubbles that are formed in at least one plane within the volume.

The invention relates to the technical field of surface coating materials, in particular to a multifunctional surface coating which comprises the following raw materials: organic silicon modified acrylic resin, an intumescent flame retardant, hollow glass beads, nano titanium dioxide, an auxiliary agent, graphene, silver nanoparticles and flaky zinc powder. The intumescent flame retardant is formed by compounding melamine polyphosphate and pentaerythritol, and the auxiliary agent comprises a dispersing agent, a flatting agent and a plasticizer. By integrating multiple functions of fire prevention, water prevention, heat insulation, self-cleaning and the like into a whole, the complex requirements of different fields of buildings, industry, traffic and the like on material performance can be comprehensively met. In the application of building exterior walls, the fireproof safety, the waterproof sealing performance and the heat insulation performance of buildings can be effectively improved, and energy consumption is reduced; in the aspect of industrial equipment protection, equipment can be protected from being damaged by environmental factors such as high temperature, moisture and corrosion, and the service life of the equipment is prolonged.

The invention relates to the technical field of decorative materials, in particular to a decorative material with a 3D texture structure and a preparation method and application of the decorative material. The method comprises the following steps: carrying out digital printing on a pretreated substrate to obtain a 2D pattern layer on the surface of the substrate; coating the surface of the 2D pattern layer with a photocuring coating, carrying out preliminary curing, and then carrying out ink-jet printing of a texture developing solution on the surface subjected to preliminary curing to carry out secondary curing, so as to obtain a cured coating; the cured coating comprises a hardened part and an unhardened part; and after an unhardened part in the cured coating is removed through polishing and wire drawing, a surface coating is coated, and the decorative material with the 3D texture structure is obtained. The textures with different widths and depths can be obtained in a manner of combining primary curing of the coating with ultraviolet absorption of the developing solution, and then a microcosmic coarse and visual smooth form is obtained through polishing and wire drawing treatment, so that the obtained 3D texture structure is closer to natural textures.

The invention belongs to the technical field of biomedical engineering, and particularly relates to a preparation method and application of a titanium dental implant surface coating, and the preparation method comprises the following steps: S1, pretreatment of a titanium dental implant matrix: sequentially carrying out grinding and polishing, ultrasonic cleaning and acid etching treatment; s2, preparation of a coating precursor solution: adding nano-hydroxyapatite powder, chitosan, gelatin and titanium dioxide nanoparticles into deionized water, stirring to form a suspension, then adding a silver nitrate solution, and continuously stirring to form the coating precursor solution; s3, coating a coating: coating the surface of the pretreated titanium dental implant matrix with the coating precursor solution by adopting an electrophoretic deposition method; and S4, drying and sintering: drying and sintering the coated titanium dental implant. According to the preparation method of the titanium dental implant surface coating, provided by the invention, the bonding strength between the coating and the titanium dental implant matrix can be improved.

The invention discloses a high-stability layered oxide sodium-ion battery positive electrode material and a preparation method thereof.The high-stability layered oxide sodium-ion battery positive electrode material comprises a layered oxide matrix and a surface coating layer, a sodium source, a nickel source, a manganese source, a lithium source and a magnesium source are mixed according to the stoichiometric ratio, a pre-sintered product is heated to 850-950 DEG C at the speed of 0.5-2 DEG C / min to be calcined, and the high-stability layered oxide sodium-ion battery positive electrode material is obtained. The calcined product, lithium phosphate and aluminum nitrate are subjected to ball milling and mixing in a citric acid solution with the pH value of 3-5 according to the mass ratio of 1: (0.005-0.03): (0.002-0.02), and the capacity retention ratio of the battery is larger than or equal to 88% after 500 times of circulation under the voltage range of 2.0-4.0 V and the multiplying power of 0.5 C. The comprehensive protection from the bulk phase to the interface is realized by triple doping and gradient coating, and the cycle life is prolonged by two times. Interlayer spacing expansion and coating layer ion conduction cooperate to reduce polarization, and the applicable temperature range is widened to-30 DEG C to 60 DEG C. Seed crystal induction and segmented sintering ensure batch consistency, and the method is suitable for large-scale production. Cheap Fe / Mn is adopted to replace part of Ni, and the material cost is reduced by 40% compared with similar products.

The invention discloses a nuclear zirconium alloy cladding high-temperature oxidation resistant composite coating and a preparation method thereof, and belongs to the technical field of nuclear zirconium alloy coatings. According to the preparation method disclosed by the invention, through component gradient structure design, Cr ion pretreatment activation, deposition of a pure Cr inner coating, deposition of a Cr70Al30 intermediate coating and deposition of a Cr50Al50 outer coating are sequentially carried out on the surface of a nuclear zirconium alloy cladding, and the Cr-Cr70Al30-Cr50Al50 composite coating zirconium alloy cladding with a three-layer structure is obtained. According to the method, outward migration of the Al element is effectively limited while the excellent anti-oxidation characteristics of the Cr and Al elements are fully utilized, the coating has the excellent high-temperature oxidation performance, and the requirement for the service performance of the surface coating of the zirconium alloy cladding at the extremely high temperature is met.

The invention discloses a high-temperature-resistant anticorrosive coating for coating the surface of a steel pipe and a preparation method of the high-temperature-resistant anticorrosive coating, and relates to the technical field of high-temperature-resistant anticorrosive coatings. The high-temperature-resistant coating comprises the following components in parts by mass: 30-50 parts of a resin base material, 20-35 parts of a high-temperature-resistant filler, 5-15 parts of a preservative, 10-25 parts of a solvent and 1-5 parts of an auxiliary agent. The coating forms a compact composite protective layer through molecular hierarchical design, keeps structural integrity at high temperature, effectively blocks corrosion medium permeation, and adapts to a severe temperature change environment. The coating can be widely applied to metal protection under severe working conditions of ships, airplanes, high-speed rails and the like, and the temperature resistance limit, the salt spray corrosion resistance and the cold and hot alternating stability of the coating are remarkably improved.

The invention discloses a high-temperature-resistant metal surface coating and a preparation method thereof, and the high-temperature-resistant metal surface coating comprises the following components in parts by weight: 40-60 parts of ceramic silicon resin, 20-30 parts of polyether sulfone modified organic fluorine resin, 8-10 parts of water-based polyimide resin, 10-15 parts of zinc chrome, 4-6 parts of boron nitride, 3-5 parts of a modified phenolic aldehyde amine curing agent, 8-15 parts of barium sulfate and 8-10 parts of short carbon fiber. The invention relates to the technical field of preparation of metal surface coatings. The metal surface coating is prepared from the following components in parts by weight: 5-8 parts of hollow glass beads, 2-4 parts of a silane coupling agent, 1-3 parts of an organic silicon defoaming agent, 8-12 parts of a dispersing agent, 1-2 parts of a thickening agent and 6-9 parts of a composite coating anti-aging agent. According to the high-temperature-resistant metal surface coating and the preparation method thereof, the ceramic silicon resin, the polyethersulfone modified organic fluororesin and the water-based polyimide resin are adopted as main resin components, a stable structure can be formed at high temperature, and the high-temperature-resistant metal surface coating can bear higher temperature.

The invention relates to the technical field of surface spraying, in particular to an intelligent surface spraying method and device based on coating quality and a spraying robot. The intelligent surface spraying method based on the coating quality comprises the steps that the coating actually-measured thicknesses of a plurality of detection points in a spraying width area are monitored in real time, and an actually-measured thickness distribution field is obtained; according to the actually measured thickness distribution field and the target thickness of the coating, a thickness deviation mean value is calculated, and whether the thickness deviation mean value is out of an allowable range or not is judged; if yes, calculating a thickness standard deviation according to the actually measured thickness distribution field; calculating a speed correction amount according to the thickness deviation mean value and the speed correction coefficient; and according to the thickness deviation mean value, the thickness standard deviation and the spraying width correction coefficient, the spraying width correction amount is calculated. According to the intelligent surface spraying method and device based on the coating quality and the spraying robot, the product surface coating spraying effect standard reaching rate is high, the secondary machining number can be greatly reduced, and the productivity is high.

Sleep-aiding eyewear that prevents light which inhibits melatonin production from reaching the eye is described. The eyewear that is the object of the present disclosure has improved visibility over other methods of cutting off melatonin-inhibiting wavelengths of light, which enables the user to perform tasks, such as reading and typing, uninhibited. This is achieved in some embodiments using a Bragg grating comprising multiple layers of alternating reflective index material as a surface coating on the lens. This may be combined with lens-tinting, or antireflective coatings, in the eyewear. Furthermore, transition lenses which block melatonin-shifting light when there is a suitable external stimulus, such as blue light from a light emitting diode, are described. The presently described filters are also useful for electronic displays and functional light-transmitting materials.

The utility model discloses a thickness measuring device for a surface coating of a battery cell, and belongs to the technical field of detection tools. The device comprises a thickness detection assembly and a carrying assembly which are arranged on a platform, the thickness detection assembly is provided with a height adjusting device, and the height adjusting device is provided with a photoelectric sensor used for detecting the thickness of a coating on the surface of a battery cell; the carrying assembly is in sliding connection with the platform, and the carrying assembly is used for conveying a to-be-detected battery cell to the photoelectric sensor and detecting the thickness of a surface coating of the battery cell; according to the utility model, the height adjusting device and the carrying assembly are matched with the photoelectric sensor, so that the thickness of the surface coating of the cylindrical battery cell is detected in a non-contact manner, and the production quality of the battery cell is improved.

The invention provides a workpiece surface coating method and system. The system comprises surface detection equipment, control equipment and coating equipment, the surface detection equipment acquires surface coating data of the to-be-detected workpiece coated with the paint and sends the surface coating data to the control equipment; the control equipment determines a supplementary coating parameter aiming at each coating defect existing on the surface of the to-be-detected workpiece according to the surface coating data, generates a supplementary coating control instruction according to the supplementary coating parameter of each coating defect and sends the supplementary coating control instruction to the coating equipment; and the coating equipment performs paint coating on each coating defect existing on the surface of the to-be-detected workpiece according to the supplementary coating control instruction. Therefore, by accurately determining the coating repairing parameter of each coating defect existing on the surface of the workpiece, high-precision detection and accurate paint repairing of the coating defects on the surface of the workpiece are achieved through automatic operation, manual intervention is reduced, the paint repairing efficiency is improved, the paint repairing quality is guaranteed, the production cost is reduced, and the consistency and reliability of the protection performance of the workpiece are guaranteed.

The invention relates to the technical field of sodium-ion batteries, in particular to a sodium-ion battery positive electrode material and a preparation method thereof.The sodium-ion battery positive electrode material comprises a sodium ferric sulfate precursor and a carbon coating layer coating the surface of the sodium ferric sulfate precursor; the sodium ferric sulfate precursor comprises a sodium source, an iron source, an antioxidant and halogenated carboxylic acid; and the carbon coating layer is formed by coating and sintering phosphate. Aiming at the problem that a carbon-coated positive electrode material in the prior art is easy to form defect points, the carbonization temperature in the sintering process is reduced by adding halogenated carboxylic acid into a precursor, so that the carbonization effect is improved, the probability of forming the defect points is reduced, and halogen ions are introduced into a carbon-coated layer in the sintering process to improve the conductivity; meanwhile, surface coating is carried out through phosphate, so that reaction of the positive electrode and electrolyte under a high-voltage condition can be effectively inhibited, gradual deterioration of the material structure due to moisture absorption in the circulation process is avoided, and the circulation stability of the material is improved.

The invention discloses a tantalum-tungsten alloy surface layer thickness ratio gradient structure coating and a preparation method thereof, and belongs to the technical field of ultrahigh-temperature anti-oxidation coating preparation. A tantalum-tungsten alloy is used as a substrate, and the surface coating of the tantalum-tungsten alloy is prepared through the following steps: (1) solid-phase embedding boronizing; (2) a ZrB2-MoSi2-ZrSi2 layer is prepared through the combination of slurry fusion sintering and a solid infiltration method; and (3) the ZrB2-TaSi2-Zr6Ta2O17 composite coating slurry is prepared in a sintering mode. The total thickness of the prepared coating ranges from 120 micrometers to 200 micrometers, the thicknesses of all the layers are in an exponential gradient relation: tn = t1 * Kn-1 (t0 = 1, K = 1.2-1.3), the problems of uneven thermal stress distribution between the tantalum-tungsten alloy substrate and the coating and between the layers of the coating and ultra-high-temperature anti-oxidation protection of the tantalum-tungsten alloy are successfully solved, the prepared coating is good in binding force and free of defects such as holes and cracks, and the service life of the coating is prolonged. And the tantalum-tungsten alloy can keep a good anti-oxidation effect for a short time under the extreme high-temperature condition of 2000 DEG C.

The invention discloses base paper for aluminum spraying and a preparation method thereof, and relates to the technical field of base paper. The preparation method comprises the following steps: pulping softwood pulp, then adding deionized water to dilute the softwood pulp until the mass concentration is 0.8%-1%, then adding modified gel particles, modified bentonite and a PAE wet strength agent, adjusting the pH value to 6.5-7.5, stirring for 40-60 minutes, and then adding deionized water to dilute the softwood pulp until the mass concentration is 0.5%-0.7% to obtain mixed paper pulp; and then making the mixed paper pulp into paper sheets, squeezing, drying, coating the surface layer coating on the surface of base material paper, and drying with hot air to obtain the body paper for aluminum spraying. According to the invention, the modified gel particles and the modified bentonite are added, so that the mildew-proof and moisture-proof capabilities of the base paper for aluminum spraying are effectively improved; the introduction of the surface coating further improves the mildew-proof and moisture-proof capabilities. Therefore, the method has a wider application prospect.

The present invention discloses an aqueous zinc-ion battery, comprising: a positive electrode sheet, a negative electrode sheet and an electrolyte. The positive electrode material of the positive electrode sheet is a layered vanadium-based positive electrode material. Since cations and water molecules are inserted into the layers of vanadium pentoxide, the interlayer spacing is increased and the structure of the host material is supported and stabilized. Therefore, the fast and reversible insertion and extraction performance of charge and discharge ions can be improved, and the high rate and long cycle life of the layered vanadium-based positive electrode material can be achieved. The negative electrode sheet is a zinc foil with a surface coating. By defining the thickness of the surface coating to be 100 nm to 20 μm, the surface coating can prevent the zinc foil from directly contacting the electrolyte, and zinc will be deposited between the coating and the zinc foil during the charge and discharge process. In this way, the direct contact between zinc and the electrolyte is avoided, which helps to solve problems such as dendrites, corrosion and hydrogen evolution of the zinc negative electrode. Compared with the traditional aqueous zinc-ion battery, the electrochemical performance of this aqueous zinc-ion battery is enhanced.

The invention relates to the technical field of corrosion resistance detection, and discloses building steel structure surface coating corrosion resistance detection equipment which comprises a detection table, a roller conveyor is fixedly mounted at the top of the detection table, a lifting driving part is arranged on the rear side of the detection table, and mounting frames are arranged at the output end of the lifting driving part in an array mode; a blocking assembly is longitudinally and slidably connected to the right side of each mounting frame, a solution enclosure assembly is transversely and slidably connected to the bottom of each mounting frame, a mixing tank is fixedly mounted at the top of each solution enclosure assembly, and a solution conveying part and an air conveying part are connected to the top of each mixing tank. The four solution enclosure assemblies are located at different positions of the mounting frame respectively and used for spraying an acid solution, an alkaline solution, a salt solution and purified water respectively, the four solutions cannot be mixed, and the detection result is reliable; therefore, the purposes of respectively spraying the detection liquid and being high in detection reliability are achieved.

The invention discloses steel bar surface coating spraying equipment which comprises a spraying mechanism, a spraying mechanism, a spraying mechanism and a spraying mechanism. The feeding assembly comprises fixed supporting pieces which are arranged on the corresponding supporting racks side by side, the fixed supporting pieces are driven by corresponding driving mechanisms to circularly pass through one side of the feeding end of the spraying mechanism, and the fixed supporting pieces are upwards provided with openings for supporting reinforcing steel bars respectively; the openings are fixedly connected with magnet pieces used for adsorbing and fixing the reinforcing steel bars correspondingly. The feeding guide mechanism comprises a plurality of transverse supporting guide rollers and at least one longitudinal limiting cylinder, the transverse supporting guide rollers are rotatably mounted on one side of the feeding end of the spraying mechanism side by side, and an inner hole of the longitudinal limiting cylinder and the reinforcing steel bar are coaxially arranged at intervals. The structural simplicity of the steel bar feeding mechanism can be effectively and obviously improved, so that the manufacturing and operating cost of equipment is reduced, and the spraying uniformity of a coating material is effectively and greatly improved.

The invention discloses a ternary positive electrode material, a preparation method thereof and an electrochemical device. The preparation method comprises the following steps: mixing a continuous ternary precursor, a lithium source and an aluminum source, and carrying out first sintering to obtain a first sintered product; the primary sintering product is subjected to secondary sintering and dispersion, a single-crystal base material is obtained, the base material comprises a plurality of primary particles, the average size of the primary particles ranges from 2 micrometers to 3 micrometers, and the median particle size Dv50 of the primary particles ranges from 3 micrometers to 5 micrometers; mixing the matrix material with an aqueous solution of lithium phosphate, and carrying out wet coating to obtain a coated product; and sintering the coated product for the third time, so that the lithium phosphate forms a coating layer on the surface of the matrix material, and the ternary positive electrode material is obtained. According to the invention, through two-parameter control of the average size and the median particle size of the matrix material and simultaneous aluminum element internal doping and lithium phosphate surface coating of the matrix material, the structural stability and the cycle performance of the ternary positive electrode material are improved and the service life of the ternary positive electrode material is prolonged through a synergistic effect.

The invention belongs to the technical field of back contact cells, and particularly relates to a back contact cell manufacturing method for improving passivation performance and a back contact cell thereof, and the method comprises the steps: S2, depositing a first semiconductor layer and a phosphorosilicate glass layer on the back surface of a silicon wafer, and reserving the first semiconductor layer and the phosphorosilicate glass layer as a first mask layer; s3, performing texturing cleaning on the front surface of the silicon wafer; the first mask layer is removed in the final cleaning process after texturing; s4, forming a passivation layer and an anti-reflection layer on the front surface of the silicon wafer; s5, coating the back surface to form a second mask layer; s6, forming a second semiconductor opening region; and S7, texturing or polishing the second semiconductor opening area on the back surface, and cleaning by using an HF solution with the mass concentration of 0.5%-5% to remove the second mask layer and the winding plating layer generated in the front surface coating process in the S4. The back surface winding plating layer does not need to be removed, damage to the first semiconductor layer and the front surface film layer can be avoided, the overall passivation level can be improved, and therefore the battery efficiency is improved.

The invention relates to the field of strip steel material coating liquid, and discloses production equipment for strip steel material surface coating liquid, which comprises a support table, a reaction kettle is fixedly connected in the support table, the bottom end of the reaction kettle is fixedly connected with a discharge port, and the upper surface of the support table is fixedly connected with a liquid tank. A first supporting frame is fixedly connected to the upper surface of the supporting table, a solid stock bin is fixedly connected to the interior of the first supporting frame, a conveying pipe is fixedly connected to the bottom end of the solid stock bin, a feeding port is fixedly connected to the outer wall of the conveying pipe, and a first motor is arranged at one end of the conveying pipe. Through vibration of the vibration bin and the sieve plate thereof, material caking is effectively prevented, it is ensured that materials smoothly and continuously flow into the reaction kettle, blockage and feeding interruption are avoided, dispersion uniformity and dissolution and reaction efficiency of the materials are improved, stirring and mixing time is shortened, and energy consumption is reduced.

The invention discloses a cement-based surface super-hydrophobic coating as well as a preparation method and a use method thereof. The cement-based surface super-hydrophobic coating comprises a prime coating and a surface coating, the prime coating is a coupling agent modified fibrous clay / resin composite material, the surface coating is a coupling agent modified SiO2 / low surface energy substance modified resin composite material, the contact angle of the cement-based surface super-hydrophobic coating is 155-159 degrees, and the impact strength is 50-60 kg.cm. Fibrous clay and high-permeability alkali-resistant resin are mixed to serve as a bottom layer of the coating, silane modified SiO2 and a low-surface-energy substance modified resin material are compounded to serve as a surface layer, the surface layer is coated on the surface of a cement-based material, and a nanofiber structure of clay is combined with the high-permeability alkali-resistant resin, so that the coating is endowed with excellent toughness, adhesive force and alkali resistance; and the coating is endowed with super-hydrophobicity and wear resistance by virtue of a bulge structure formed by bonding dense SiO2 on the surface through resin.

The invention discloses a polycrystalline positive electrode material for a sulfide all-solid-state battery, a preparation method of the polycrystalline positive electrode material and a secondary battery, the surface of a high-nickel polycrystalline positive electrode material is coated with a conductive polymer in a surface coating manner, and an inorganic electrolyte is dispersed in the conductive polymer. According to the polycrystal positive electrode material for the sulfide all-solid-state battery, the stress generated by expansion of the high-nickel polycrystal positive electrode material is effectively relieved by utilizing the elasticity of the conductive polymer, the mechanical strength and durability of the material are enhanced, and the problem that the high-nickel polycrystal positive electrode material is easy to crack in the circulating process is effectively solved. In addition, the interfacial compatibility between the high-nickel polycrystalline positive electrode material subjected to coating modification treatment and the electrolyte is improved, the coated conductive polymer also has excellent electronic conductivity, the inorganic electrolyte can realize lithium ion transmission on a polymer chain segment, and the combined action of the two can improve the internal grain boundary conductivity of the polycrystal, so that the rate performance is improved.