30results about How to "Achieve densification" patented technology

The invention discloses an additive manufacturing method of high-toughness alumina whisker toughened zirconia ceramic, and relates to a forming method of whisker toughened zirconia ceramic. Based on a photocuring additive manufacturing technology and an ultra-fast high-temperature sintering technology, fast additive manufacturing of the high-toughness alumina whisker toughened zirconia ceramic is achieved. The steps of pre-dispersing, freeze-drying and non-contact stirring are matched, so that the photo-cured ceramic slurry with good alumina whisker dispersion and good printability can be prepared on the premise of not damaging the whiskers; the non-reactive diluent added in the resin formula serves as a thermoplastic resin solvent and can be discharged at a low temperature, so that uniform pore channels are formed in a matrix, subsequent discharge of pyrolysis gas of resin is facilitated, and generation of defects is reduced; the added thermoplastic polyimide is resistant to high temperature and can be reserved to a sintering stage, the high-temperature toughness of the green body is improved, and the semi-degreased green body is prevented from being broken in the ultra-fast high-temperature sintering process.

The invention provides a multiphase reinforced high-toughness and high-conductivity TiB2-based composite material and an in-situ preparation method thereof, and belongs to the field of TiB2 composite materials. The preparation method comprises the following steps: selecting a Ti source, B4C powder and TiB2 powder with different particle sizes as raw materials, firstly mixing a sintering aid, then adding the aid into a TiB2 matrix, carrying out ball-milling mixing and screening granulation, and carrying out oscillation hot pressing or spark plasma sintering under a vacuum condition to obtain the multiphase reinforced TiB2-based composite material. According to the preparation method, an in-situ reaction sintering process is adopted, and a competitive reaction in a system is regulated and controlled, so that the metallurgical-grade combined high-toughness and high-conductivity TiB2-based composite material which takes a TiB2 matrix as a framework and multiple reinforced phases (TiCx, TiB, C and the like) as fillers is constructed. Meanwhile, the cost of the raw materials is low, the preparation process is simple, and the optimization of the components, the structure and the performance of the TiB2-based composite material can be realized only by regulating and controlling the component proportion of the raw materials, so that the application requirements in the extreme environment fields such as aluminum electrolysis cathode materials, high-temperature engine materials and aerospace materials can be better met.

The invention discloses a 3D target detection method for point cloud image fusion based on a basic model, which is applied to the technical field of automatic driving and comprises the following steps: inputting a multi-view image into the basic model to obtain an image depth map; inputting the image depth map and the radar point cloud into a semantic projection model to obtain a radar depth map; inputting the image depth map and the radar depth map into a filtering module to obtain an enhanced radar point cloud; obtaining multi-scale image BEV features and multi-scale radar BEV features corresponding to the multi-view image and the enhanced radar point cloud, and inputting the multi-scale image BEV features and the multi-scale radar BEV features into a multi-scale feature fusion module to obtain multi-scale fusion features; and inputting the fusion feature into a detection head to obtain a detection result. The sparse radar point cloud densification is realized by using the basic model, the multi-scale and multi-mode BEV features are thoroughly fused by using the multi-scale feature fusion module, and the accuracy and robustness of target detection are improved.

The invention relates to the technical field of aluminum-copper alloy surface treatment, in particular to an aluminum-copper alloy micro-arc oxidation film layer and a preparation method thereof.The preparation method comprises the following steps that a base material is pretreated; a micro-arc oxidation electrolyte is prepared, an electrolyte in the micro-arc oxidation electrolyte is composed of sodium silicate, sodium hydroxide and soluble oxalate, a solvent is water, the pretreated base material is placed in the micro-arc oxidation electrolyte to be subjected to micro-arc oxidation, the aluminum-copper alloy micro-arc oxidation film layer is obtained, and specific electrical parameters of micro-arc oxidation are as follows: the current density is 3A / dm < 2 >-5A / dm < 2 >, the current density is 3A / dm < 2 >-5A / dm < 2 >, and the current density is 3A / dm < 2 >-5A / dm < 2 >-5A / dm < 2 >; according to the method, the porosity of the aluminum-copper alloy micro-arc oxidation film layer is synergistically reduced by optimizing the electrical parameters and the concentration of the electrolyte, and then the corrosion resistance of the film layer is improved.

The invention discloses a preparation method of an aluminum nitride ceramic electrostatic chuck, which belongs to the technical field of semiconductors, and comprises the following steps: preparing aluminum nitride powder and a pressing mold; powder filling: putting the first mold plate into the bottom of the inner side of the mold body, weighing aluminum nitride powder for vibration filling, putting the flat plate on the powder subjected to vibration filling, adjusting the flat plate to be flat, putting the pore plate on the flat plate, putting the pore plate on the flat plate again, putting the second mold plate on the pore plate, and leveling the second mold plate; then filling aluminum nitride powder on a second mold plate through vibration, placing a flat plate on the aluminum nitride powder on the second mold plate, continuously placing a pore plate above the flat plate, placing a third mold plate on the pore plate, filling aluminum nitride powder on the third mold plate through vibration, placing the flat plate above the powder after powder filling, and placing the pore plate above the flat plate; the upper part of the uppermost pore plate is covered with a mold cover; and bundling, static pressing and sintering: carrying out isostatic pressing after sealing and bundling, and sintering after pressing.

The invention belongs to the field of non-oxide structural ceramics, and particularly relates to a high-bending-strength TiB2-based composite ceramic and a preparation method thereof.The high-bending-strength TiB2-based composite ceramic is prepared from TiN powder, B4C powder, Si powder, Al powder, B powder, BN powder, TiB2 powder, AlN powder and SiC powder as raw materials through the steps that powder proportioning is carried out, and the TiB2-based composite ceramic is prepared; the raw material powder is mixed, subjected to rotary evaporation, dried and sieved, and then densified by using a spark plasma sintering method to obtain the required TiB2-based composite ceramic. Through raw material formula optimization, spark plasma sintering process control and subsequent heat treatment-water quenching process, the bending strength of the TiB2 ceramic is remarkably improved, and meanwhile other excellent performance is guaranteed.

The invention discloses a high-toughness aluminum-based composite material with a physical bonding interface and a preparation method and application of the high-toughness aluminum-based composite material. The invention belongs to the field of aluminum-based composite materials. The invention aims to solve the technical problem of premature failure of a matrix-reinforced phase particle interface in the loading process of the existing NiTip reinforced aluminum-based composite material. The method comprises the following steps: firstly, mixing SiCnp and small-size aluminum-based matrix powder through high-energy ball milling; then NiTip and large-size aluminum-based matrix powder are subjected to high-energy ball milling and mixing; then the two kinds of mixed powder and non-ball-milled aluminum powder are subjected to low-speed ball milling and mixing, and Al-SiCnp-NiTip composite powder is obtained; and finally, carrying out low-temperature discharge plasma sintering and low-temperature hot extrusion. The method disclosed by the invention can also be used for preparing other metals and alloy composite materials thereof. The obtained composite material has high strength and toughness, and is applied to the fields of aerospace and automotive engineering.

The invention provides a method for preparing a high-temperature-resistant furnace lining material of an intermediate frequency furnace. The method comprises the following steps: proportioning raw materials: weighing high-purity quartz sand and boric acid according to a weight ratio; wherein the quartz sand comprises a plurality of particle size ranges covering at least five particle sizes, the quartz sand of each particle size in the quartz sand composition adopts a non-uniform gradient distribution mode, the minimum particle size is fine-particle-size quartz sand with the particle size range of 120-150 meshes, and the quartz sand accounts for 20-30% of the total weight of the quartz sand; the dosage of the boric acid is 0.8-1.5% of the total weight of the quartz sand; mixing: fully mixing the quartz sand and boric acid through mixing equipment to form a uniform mixture; forming: paving the mixture in the furnace wall in a layer-by-layer thin-layer tamping manner; and baking: gradually heating the furnace lining material in stages, and finishing high-temperature baking and sintering in stages. According to the method, tight combination among particles can be promoted through staged sintering, a compact overall structure is formed, and meanwhile the service life of the furnace lining can be effectively prolonged.

The invention relates to the technical field of silicon carbide ceramics, in particular to an in-situ induced low-temperature eutectic silicon carbide porous ceramic and a preparation method thereof. The material is prepared by mixing and sintering the following materials: silicon carbide, a synergistic sintering system, a dispersing agent, a plasticizer and water, wherein the synergistic sintering system comprises the following components: pregelatinized starch, a silicate mineral material, aluminum oxide, calcium carbonate, glass powder and rare earth oxide; the pregelatinized starch is adopted as an adhesive, the thermal decomposition behavior of the pregelatinized starch and the chemical reaction activity of the glass powder and the calcium carbonate form synergy in the process, seamless connection of the whole process from the room temperature to the sintering temperature is achieved, the sintering temperature is greatly reduced, meanwhile, the glue discharging step is omitted, and the silicon carbide porous ceramic product with good performance and few defects is obtained.

The invention provides a method for preparing a ceramsite fracturing propping agent with a SiO2-Al2O3 mullite phase at a low temperature and a product. The method comprises the following steps: putting a mixture of SiO2, Al2O3 and an instantaneous sintering aid into a low-temperature sintering device; a pressure relief opening of the pressure shaft is in a closed state, the pressure shaft is used for conducting first pressurization treatment on the sintering chamber, the air pressure in the sintering chamber is controlled to be higher than the air pressure outside the sintering chamber, and a first pressurization treatment product is obtained; the pressure relief opening is in an open state, the air pressure inside the sintering chamber and the air pressure outside the sintering chamber are adjusted to be kept consistent, second pressurization treatment is conducted, and the mullite phase fracturing propping agent which is excellent in mechanical property, low in breakage rate, stable in physical and chemical property and resistant to chemical corrosion is obtained. The preparation method has the advantages of simplicity in synthesis, easiness in implementation, low sintering temperature and energy conservation, is beneficial to popularization in the field of industrial fracturing of petroleum and natural gas, and has a wide application prospect.

The present invention discloses a silicon carbide support plate and a preparation method thereof, and belongs to the field of refractory materials. The preparation of the silicon carbide support plate includes: S1, preparing granulated powder: mixing silicon carbide nano powder, a binder, a dispersant and a grinding medium, grinding and dispersing, then adding an auxiliary agent for secondary grinding, filtering out the grinding medium, adding pure water for tertiary grinding, and then spray granulating to obtain granulated powder; the auxiliary agent includes boron carbide, hafnium carbide and tantalum carbide; S2, pressing and molding to obtain a green body; S3, wet isostatic pressing treatment; S4, pressureless sintering to obtain a silicon carbide support plate. The present invention adopts a pressureless sintering method to prepare a silicon carbide support plate, which can not only reduce the sintering densification temperature, but also reduce the process cost caused by brushing slurry. The support plate product has the advantages of long service life, high strength and fast thermal conductivity.

The invention discloses a large-size boron carbide-graphene composite ceramic as well as a preparation method and application thereof. The large-size boron carbide-graphene composite ceramic has high compactness and a uniform microstructure, the size of the large-size boron carbide-graphene composite ceramic is 17-22 cm, the density of the large-size boron carbide-graphene composite ceramic is 2.502-2.518 g / cm < 3 >, the Vickers hardness of the large-size boron carbide-graphene composite ceramic is 31.5-33.8 GPa, the bending strength of the large-size boron carbide-graphene composite ceramic is 462-536 MPa, and the fracture toughness of the large-size boron carbide-graphene composite ceramic is 3.86-4.73 MPa.m < 1 / 2 >. The boron carbide-graphene composite ceramic prepared by adopting an HP and SPS dual-mode sintering mode is fine in grain, and the graphene structure is complete, so that the improvement of the mechanical property of the material is facilitated. Meanwhile, the method is simple in process, good in repeatability and high in stability, and industrial and batch stable production is easy to achieve.

The invention discloses a preparation method of a large-deformation auxiliary high-homogeneity aluminum-silicon intermediate alloy. The method comprises the following steps: 1, mixing aluminum powder and silicon powder to obtain aluminum-silicon mixed powder; 2, performing cold isostatic pressing on the aluminum-silicon mixed powder; 3, vacuum sintering; 4, removing oxide skin on the surface; 5, carrying out plastic deformation at ultralow temperature after sheathing; and sixthly, homogenizing treatment is conducted, and the high-homogeneity aluminum-silicon intermediate alloy is obtained. According to the method, the powder metallurgy method is combined with ultralow-temperature extrusion severe plastic deformation, intermediate alloy densification and primary silicon crushing and homogenization are achieved under three-way pressure stress, the aluminum-silicon intermediate alloy high in density, refined in grain and high in homogeneity is obtained, and the aluminum-silicon intermediate alloy has the advantages of being high in purity and homogeneity, low in impurity element content and good in mechanical property. The method is suitable for adding materials in the preparation process of aluminum-silicon alloy and titanium alloy.

The preparation method comprises the following steps: adding an alkaline reagent into a silver-containing leaching solution of a retired photovoltaic module to adjust the pH value to 3-5, carrying out solid-liquid separation after reaction to obtain an impurity-removed leaching solution, adding flake silver powder into the impurity-removed leaching solution, then adding a mixed solution of a dispersing agent and a reducing agent, and carrying out liquid-phase reduction reaction to obtain the micro-nano silver powder. And carrying out solid-liquid separation on the reacted slurry to obtain the micro-nano silver powder with lead on the surface. According to the preparation method provided by the invention, silver and lead in the retired photovoltaic silver-containing leaching solution can be effectively utilized, the micro-nano composite silver powder with high conductivity can be prepared in one step, and the preparation method is suitable for preparation of photovoltaic conductive silver paste and electronic packaging conductive silver paste.

The invention discloses a LiBaF 3 The preparation method of microwave dielectric ceramics relates to the field of microwave communication and the field of low-temperature co-fired ceramic dielectric materials, including LiF and BaF 2 The powders were placed in a heating furnace for primary calcination, primary grinding, primary drying, secondary calcination, secondary grinding, secondary drying, and sieving granulation; the obtained powder raw materials were pressed into cylinders and cold isostatically pressed; and finally sintered for 2 hours to achieve densification to obtain densified LiBaF 3 ; In the present invention, LiBaF 3 The preparation method of microwave dielectric materials can achieve densification at a lower temperature; under this preparation condition, LiBaF 3 Microwave dielectric ceramics have a low dielectric constant of 13.72, a high quality 73000GHz and a near-zero resonant frequency temperature coefficient of ‑35.74×10 ‑6 / ℃; at the same time, the LiBaF 3 Microwave dielectric ceramics can coexist with Ag at low temperatures and are a new type of microwave dielectric material with great application potential.

A movable vibration and smoothing system for trestle bridge relates to the technical field of concrete vibration and smoothing, and comprises a walking trolley, a lifting device and a roller shaft type vibration and smoothing device. The walking trolley is installed on the top rail of a tunnel construction trolley, and the height of the roller shaft type vibration and smoothing device is adjusted through the integrated lifting device. The vibration and smoothing device comprises a distributing spiral shaft, a paving roller shaft, a smoothing walking roller shaft and an insert type vibrator, forming a multi-stage cooperative working mechanism. The three cooperative actions of the distributing spiral shaft, the paving roller shaft and the smoothing walking roller shaft improve the uniformity, compactness and surface flatness of concrete paving. The insert type vibrator is arranged between the distributing spiral shaft and the paving roller shaft, can immediately carry out deep layer high frequency vibration after preliminary paving of concrete, effectively removes internal bubbles and prevents quality defects. The auxiliary walking wheel ensures the consistency of the concrete surface flatness and the design elevation.

The application discloses an aluminum-magnesium-silicon alloy matrix carbon nanotube reinforced composite and a hot extrusion preparation method thereof, and belongs to the field of metal matrix composite manufacturing. The method aims to solve the problems of reinforcement phase agglomeration, interface reaction to generate brittle Al4C3 phase and unstable forming quality. The steps include: acidizing and ultrasonic dispersion pretreatment of multi-walled carbon nanotubes; mixing the dispersion liquid with aluminum-magnesium-silicon alloy powder and performing high-energy ball milling to form a core-shell structure composite powder; cold pressing to form a preform; hot extrusion forming under the conditions of a temperature of 400 to 500 DEG C, an extrusion ratio of 10:1 to 25:1, a speed of 1 to 10 mm / s and online quenching, followed by solid solution aging heat treatment. The application realizes uniform dispersion distribution of carbon nanotubes through chemical and physical cooperative pretreatment and mechanical ball milling, effectively inhibits the generation of interface brittle Al4C3 phase by using a low-temperature large deformation process, and significantly improves the interface bonding quality and matrix density. The prepared composite has a hardness of 150 HV or more, and excellent mechanical properties and wear resistance.

The invention discloses a low-porosity, low-iron and low-creep clay brick and a preparation method thereof, and relates to the technical field of refractory materials, and the low-porosity, low-iron and low-creep clay brick comprises the following components in parts by weight: 30-45 parts of a mullite homogenized material, 12-20 parts of Anhui flint clay, 8-10 parts of sillimanite, 15-25 parts of kaolin, 10-20 parts of andalusite powder, 3-5 parts of raw silicon powder, 2-5 parts of potassium feldspar powder and 0.2-0.5 part of hydroxypropyl methyl cellulose. And 3-6 parts of an aluminum dihydrogen phosphate solution. The high-quality clay brick with low porosity, low iron, low creep deformation and high strength is successfully prepared by optimizing the raw material ratio and a composite binding agent system, and the high-quality clay brick is suitable for high-temperature industrial kilns with harsh performance requirements.

This invention discloses a method for preparing high-strength, high-thermal-conductivity silicon carbide ceramics, relating to the field of advanced ceramic processing technology. The method includes the following steps: adding PEG to deionized water, then adding hydrophilically modified mesophase pitch-based carbon fibers and hydroxylated modified α-SiC, followed by adding monomers and crosslinking agents, and finally adding an initiator; stirring and pouring the mixture into a mold; heating and curing to obtain HTC. f - SiC green embryo; drying and degreasing; introducing carbon matrix using polymer impregnation pyrolysis process to obtain HTC. f A SiC-C intermediate is prepared by using a reactive melt infiltration process to infiltrate molten Si and react it with the carbon matrix, resulting in high-strength, high-thermal-conductivity silicon carbide ceramics. This invention significantly reduces the manufacturing cost of SiC ceramics, lowers equipment energy consumption, and improves the thermal conductivity, mechanical properties, and fracture toughness of SiC ceramics. This invention solves the problems of complex preparation processes and poor performance of silicon carbide ceramics in existing technologies.

The invention relates to the technical field of powder metallurgy materials, and particularly discloses a FeSiAl-Fe composite target material and a preparation method thereof. The preparation method of the FeSiAl-Fe composite target material specifically comprises the following steps that pure Fe powder is subjected to compression molding, and a bottom layer pure Fe cold-pressed blank with the density being 60%-85% is obtained; the bottom-layer cold-pressed blank is loaded into the bottom layer of a graphite mold, and FeSiAl alloy powder is evenly filled above the bottom-layer cold-pressed blank; the graphite mold is placed in an SPS discharge plasma sintering furnace, sintering densification is carried out under the vacuum condition, and after cooling, demolding is carried out to obtain a FeSiAl-Fe composite pressed blank; and the composite pressed blank is machined, and the FeSiAl-Fe composite target material is obtained. According to the technical scheme, the FeSiAl-Fe composite target material which is high in density, low in impurity element content, uniform in structure and excellent in coating performance can be obtained.

The invention discloses a high-purity ultralow-oxygen-content ruthenium-tantalum alloy target material and a preparation method thereof, and belongs to the technical field of magnetron sputtering alloy target materials. The method comprises the following steps: (1) mixing powder; (2) low-pressure pre-pressing; (3) performing high-vacuum calcination; (4) hot isostatic pressing sintering; and (5) grinding and polishing. The ruthenium-tantalum alloy target with the purity larger than or equal to 99.995% and the oxygen content smaller than or equal to 20 ppm is prepared through the preparation method, so that when the ruthenium-tantalum alloy target is used as a diffusion barrier layer material, the ruthenium-tantalum alloy target has low resistance and excellent barrier performance, and the performance of a diffusion barrier layer film is improved.

The application discloses a strontium ferrite / polyether ether ketone composite magnet and a preparation method and application thereof, and belongs to the technical field of permanent magnet materials.The strontium ferrite / polyether ether ketone composite magnet comprises, in mass fraction, near Curie point magnetic field heat-treated strontium ferrite magnetic powder 84-95 parts, polyether ether ketone 5-15 parts, silane coupling agent 0.5-1.5 parts and lubricant 0.3-0.7 parts.The application adopts the above strontium ferrite / polyether ether ketone composite magnet and the preparation method and application thereof, realizes the synergistic improvement of magnetic performance, mechanical strength and heat resistance through intrinsic magnetic domain structure optimization, interface bonding strengthening and high densification structure design, and can meet the application requirements under the working conditions of high temperature, high reliability and high strength.

The invention discloses a preparation method of antioxidant compact compound tungsten carbide-based rare metal ceramic, and relates to the field of metal ceramic. Firstly, a silicon carbide substance is introduced through polycarbosilane, ceramic pores are filled with metal zirconium through a metal infiltration reaction, compactness is improved, and meanwhile the oxidation resistance of a ceramic matrix is enhanced; and then, a tungsten carbide enrichment layer is formed on the surface of the ceramic in a mode of combining ion injection infiltration and spraying, and the high-temperature and high-speed tungsten carbide and the metal adhesive are combined with the originally injected tungsten carbide enrichment layer into a whole during spraying. Secondly, high-proportion rare metal nano rhenium is adopted, and material surface densification of the tungsten carbide-based metal ceramic compound coating in a high-temperature environment is achieved; finally, through hydrogen reduction treatment, the oxygen content of the powder is further reduced, and the high-activity low-oxygen compound carbide rare metal ceramic with the nanocrystalline structure is produced. The ceramic prepared by the invention has the effects of oxidation resistance and compactness.

The present application relates to the technical field of steel metallurgy, and particularly relates to an ODS steel and a preparation method thereof, the preparation raw material of the ODS steel provided by the present application comprises a steel alloy and a yttrium salt, the amount of the yttrium salt is 0.4%-1.1% of the mass of the steel alloy; the yttrium salt is selected from one or both of yttrium acetate and yttrium carbonate. The ODS steel provided by the present application solves the defects that the oxide reinforcing phase particles are prone to agglomeration, uneven in size and uneven in distribution when the ODS steel is prepared by directly adding oxide powder (such as yttrium oxide) in the prior art, realizes the uniform and dispersed distribution of the nanoscale oxide reinforcing phase in the steel matrix, and thus significantly improves the comprehensive mechanical properties of the ODS steel, such as the strength, plasticity, toughness and high-temperature creep resistance.

This invention discloses an in-situ nano-duplex reinforced Al-Zn-Mg-Cu-Y alloy. The chemical composition of the alloy, by mass percentage, comprises: Zn 4-8%, Mg 1.2-2.8%, Cu 1.2-2.0%, Y 0.1-0.6%, and Al 86.6-93.5%, with the total mass percentage of each chemical component being 100%. The alloy microstructure contains uniformly distributed nano-scale η-phase and nano-scale T-phase. This invention also discloses a high-pressure preparation method for the above-mentioned in-situ nano-duplex reinforced Al-Zn-Mg-Cu-Y alloy, comprising the following steps: subjecting the billet to high-temperature and high-pressure treatment to obtain the in-situ nano-duplex reinforced Al-Zn-Mg-Cu-Y alloy. This invention adds rare earth element Y and combines this with high-temperature and high-pressure treatment to form uniformly distributed nano-scale η-phase and nano-scale T-phase in-situ within the alloy microstructure.

The application provides a high-temperature brazing filler metal for silicon carbide-based ceramic connection and a preparation method and application thereof, and belongs to the technical field of silicon carbide ceramic materials. The high-temperature brazing filler metal for silicon carbide-based ceramic connection provided by the application comprises 2-15% of metal powder and the balance of Ti-Si powder in percentage by mass, wherein the metal powder comprises Fe powder, Al powder, Ni powder, Cr powder or Co powder. A small amount of metal elements is added in the Ti-Si brazing filler metal, so that the melting point of the brazing filler metal is reduced, the connection time is shortened, and the liquid brazing filler metal is promoted to generate the Ti3SiC2 MAX phase with high strength by in-situ reaction with the silicon carbide-based ceramic to connect the base material; meanwhile, the brazing filler metal is in a liquid state at high temperature, so that the densification of the weld is achieved without using pressure, and the mechanical properties of the connected parts at room temperature and high temperature are improved.

The application provides a kind of display film crystalline injection process method, belongs to thin film crystalline injection technical field, method includes: S1, preparation stress buffer and crystallization control adjuvant, its raw material includes vinyltriethoxysilane, polyether modified polysiloxane surfactant and propylene glycol methyl ether acetate etc.;S2, indium nitrate, gallium nitrate, zinc acetate and adjuvant are mixed, and preparation base composite precursor solution A;S3, solution A is spin-coated into film, and gradient drying and pre-solidification are carried out to obtain pre-solidification film;S4, the impregnation liquid B obtained by diluting with adjuvant is used to carry out liquid phase assisted impregnation on pre-solidification film, and low oxygen atmosphere is carried out in low temperature activation gradient annealing;S5, in inert atmosphere, carry out rapid thermal annealing;The application realizes high-quality crystallization of film at lower temperature by adjuvant and synergistic annealing process, reduces the internal stress of film, and the prepared display film has excellent electrical performance uniformity, high light transmittance and low residual stress.

The application relates to the field of functional materials and discloses a coordination polymer glass integrated MOF composite film, preparation and application. The composite film comprises a porous support substrate, a discontinuous MOF crystal layer grown on the surface of the support substrate, and a coordination polymer glass phase filled in intercrystalline gaps of the MOF. In the preparation, a discontinuous columnar arene-containing MOF layer is first grown in situ on the substrate, then low-melting coordination polymer crystals are deposited on the surface of the MOF layer, the coordination polymer crystals are infiltrated into the intercrystalline gaps by being melted through heating, and the coordination polymer crystals are converted into a dense and non-porous glass phase through rapid quenching. The application innovatively introduces a coordination polymer glass as a molecular adhesive, eliminates non-selective intercrystalline defects, retains intrinsic channels of the MOF, realizes high selectivity, high cycle stability and excellent electrochemical transmission flux of potassium, sodium and lithium ions, and has wide application prospects in the fields of lithium extraction from salt lakes and seawater desalination.

The method comprises the following steps: dispersing low-melting-point glass powder and functional ceramic particles in a liquid ceramic organic precursor to prepare an impregnation liquid, and carrying out impregnation, curing and cracking treatment on a carbon fiber cloth fabric to obtain the antioxidant high-temperature-resistant ceramic panel. The low-melting-point ceramic particles can form a molten viscous state and carry the functional ceramic particles to perform self-leveling plugging at holes and gaps generated by cracking, so that the compactness and integrity of the cracked material are ensured, and finally, the anti-oxidation and high-temperature-resistant ceramic panel can be prepared and can tolerate treatment at 1700 DEG C in an aerobic environment and still keep good mechanical strength. The method has the characteristics of simple process, functional adjustment, wide application range and the like, and is expected to be applied to panels of sandwich structure thermal protection materials in the aerospace field.

The application provides a preparation method and application of a microporous wood-based carbon electrode material, and belongs to the technical field of electrode materials. The method comprises the following steps: putting pretreated basswood and laccase into a buffer solution to obtain single-enzymatic wood chips; putting the single-enzymatic wood chips and hemicellulase into a buffer solution to obtain double-enzymatic wood chips; and putting the double-enzymatic wood chips into hot pressing and high-temperature carbonization to obtain the microporous wood-based carbon electrode material. The application adopts sequential and synergistic degradation of laccase and hemicellulase to accurately and greenly remove lignin and hemicellulose, and then combines with stepwise high-pressure hot pressing densification and inert atmosphere carbonization to realize high enrichment of 0.5-1.0 nm micropores in the bulk wood-based carbon material, optimization of pore connectivity and structure without cracking and deformation. The method is free of toxic reagents and waste liquid discharge, is easy to scale up, significantly improves the conductivity and specific surface area of the material, and guarantees the product qualification rate and performance stability.