63results about How to "Maintain structural integrity" patented technology

The invention provides photo-crosslinking conductive ink based on aliphatic polycarbonate as well as a preparation method and application of the photo-crosslinking conductive ink. The photo-crosslinking conductive ink comprises an aliphatic polycarbonate polymer, a plasticizer, a crosslinking agent, a crosslinking catalyst and a photo-crosslinking agent. According to the invention, a carbonate monomer 5-methyl-5-carboxyl trimethylene carbonate initiated by PEG2000 is adopted, and an aliphatic polycarbonate polymer is synthesized through a copolymerization reaction and is used as a main matrix material of the conductive ink; the conductive ink not only has good conductivity, but also has biocompatibility and environmental friendliness, and the application range of the conductive ink in the fields of medical instruments, biosensors and the like is widened; the excellent mechanical property ensures that the conductive ink can keep structural integrity and functional stability in practical application, and the conductive ink is particularly suitable for flexible electronic devices and wearable equipment which need to be frequently bent and stretched. The preparation steps are simple and convenient, the process is controllable, raw materials are easy to obtain, energy consumption in the process is low, and the cost advantage is achieved.

The invention discloses a barium titanate-based leadless piezoelectric ceramic material and a preparation method and application thereof, and relates to the technical field of functional materials, the chemical formula of the barium titanate-based leadless piezoelectric ceramic material is Ba0. 9Sr0. 1Ti1-xSnxO3, x = 0-0.10, and x represents a mole fraction. By regulating and controlling the concentration of Sn ions in the BT-based lead-free piezoelectric ceramic, a multiphase structure with flat free energy is formed near the room temperature, meanwhile, an unconventional short-range disorderly-arranged polar snow-mud-state domain structure is induced, an extremely good domain change dynamic behavior is shown under the action of an external field, and the piezoelectric ceramic is prepared. Meanwhile, excellent piezoelectric property, electrostrictive property, electrocaloric property and mechanical property are obtained, and a candidate material is provided for a new generation of multifunctional high-precision electronic information devices.

A paper packing belt comprises a long-strip-shaped paper roll, the long-strip-shaped paper roll comprises a plurality of packing strips, the packing strips are bonded and fixed together side by side through environment-friendly glue, the cross section of each packing strip is flat, and each packing strip is composed of a composite layer and comprises a base material layer located in the middle and abrasion-resistant layers located on the two sides of the base material layer. The paper packing belt designed by the utility model is excellent in environmental protection property, mechanical strength, wear resistance, waterproof performance and the like, not only meets the high-standard requirements of modern logistics and packing industries on packing materials, but also provides a new thought and direction for research, development and application of environment-friendly packing materials. The wide application of the plastic can powerfully promote the development of the environmental protection industry, reduces plastic pollution, and contributes to the construction of a green and sustainable society.

The invention relates to the technical field of biological medicine, and particularly discloses an SIRT6 outer vesicle freeze-drying protective agent, SIRT6 outer vesicle freeze-dried powder and a preparation method and application thereof. The SIRT6 external vesicle freeze-drying protective agent provided by the invention is prepared from the following components: 0.8 to 1.5 g / 100 mL of polyvinyl alcohol, 0.5 to 0.8 g / 100 mL of dextran, 5.5 to 6 g / 100 mL of trehalose, 2.5 to 4 g / 100 mL of mannitol, 0.35 to 0.4 g / 100 mL of vitamin C, 0.15 to 0.3 g / 100 mL of hydroxyectoine, 0.8 to 1.2 g / 100 mL of superoxide dismutase and a solvent which is a phosphate buffer solution. The invention further provides freeze-dried powder of the SIRT6 external vesicles and a preparation method of the freeze-dried powder. According to the SIRT6 outer vesicle freeze-drying protective agent, the structural damage of freeze-drying to the SIRT6 outer vesicle can be reduced, and the structural integrity and functionality of the SIRT6 outer vesicle are ensured.

The invention discloses a platinum-based high-entropy alloy self-supporting catalyst as well as a preparation method and application thereof. The preparation method of the catalyst comprises the following steps: S1, dissolving a platinum source, an iron source, a cobalt source, a molybdenum source and a manganese source in a solvent according to the molar ratio of platinum to iron to molybdenum to cobalt to manganese being 1: 1: 1: 1: 1 to obtain a precursor solution; s2, dipping the carbon felt in a polyvinyl alcohol solution, and drying to obtain a substrate; and S3, dipping the substrate in the precursor solution, drying, and carrying out Joule heat flash evaporation to obtain the catalyst. According to the invention, five metals are added according to an equal molar ratio, the catalytic efficiency of the water electrolysis catalyst is improved by utilizing a high-entropy effect, the production cost of the catalyst is reduced, meanwhile, the long-time stability of the catalyst is improved by adding a self-supporting material, and an efficient and stable water electrolysis process in an acidic electrolysis environment is realized.

The invention discloses a flat functional current collector and a preparation method thereof, and relates to the technical field of current collectors. The method specifically comprises the following steps that S1, an organic film and a metal foil are attached to the same release film, and interfaces in the thickness direction are in contact; an intermediate product A is obtained; s2, a metal layer is deposited on the face, away from the release film, of the intermediate product A, and an intermediate product B is obtained; and S3, removing the release film in the intermediate product B, and depositing a metal layer on the surface again to obtain the functional current collector. A continuous conducting layer can exist in the edge area of the functional current collector prepared by the method, and a tab is not required to be reserved or welded like a traditional current collector, so that the structural smoothness of the current collector is kept.

The invention relates to the technical field of biological medicines, in particular to a preparation method of protein cross-linked nano affinity microspheres, which comprises the following steps: preparing carboxylated silicon dioxide nano microspheres with the particle size of 500nm by adopting a sol-gel method, mixing tetraethoxysilane and ammonia water according to the volume ratio of 1: (3 + / -1), reacting in an ethanol solution at 40 DEG C for 6 hours, filtering, washing, and drying to obtain the protein cross-linked nano affinity microspheres. And centrifuging to obtain a microsphere precipitate, washing with deionized water for three times to finally obtain a nano microsphere suspension of which the surface is rich in carboxyl, and controlling the solid content to be 10 + / -0.5 mg / mL. The capturing efficiency of the finally prepared protein cross-linked nano affinity microspheres for exosomes reaches 95.0%, the binding capacity reaches 28.5 mu g / mg, the purity of the extracted exosomes is higher than that of an ultracentrifugation method, the biological activity and structural integrity of animal cell exosomes and plant cell exosomes are completely kept, and the protein cross-linked nano affinity microspheres are suitable for large-scale industrial production. The problems that in a traditional exosome extraction method, the recovery rate is low, impurity pollution is serious, exosome activity is damaged, and the application range is limited are solved.

The invention discloses a grid stress slow-release structure of a split-gate MOSFET and a preparation method of the grid stress slow-release structure. The structure comprises a semiconductor epitaxial layer, a groove formed in the semiconductor epitaxial layer, a grid insulating layer arranged in the groove and at least one mounting cavity defined by the grid insulating layer. A gate conducting layer is arranged in each mounting cavity, a buffer dielectric layer is arranged between the outer surface of the gate conducting layer and the inner wall of the corresponding mounting cavity, and the thermal expansion coefficient of the buffer dielectric layer is smaller than that of the gate conducting layer. According to the technical scheme, a stress buffer interface can be formed between the gate conducting layer and the gate insulating layer, so that mechanical stress generated by thermal expansion difference is reduced, and the stability of the gate insulating layer and the reliability of the device are improved.

The application belongs to the technical field of sand consolidation agent preparation, and particularly relates to a sand consolidation agent and a preparation method thereof. The sand consolidation agent is composed of component A and component B. The component A is composed of the following raw materials: a diphenyl phenolic epoxy resin, hexakis(4-hydroxymethylphenoxy)cyclotriphosphazene, modified nano calcium zirconate, cage octakis(aminophenyl)silsesquioxane, n-butyl glycidyl ether, KH-550 silane coupling agent, polyether amine, fumed silica and defoaming agent. The component B is composed of the following raw materials: polyborosilazane and 2-ethyl-4-methyl imidazole. The cage octakis(aminophenyl)silsesquioxane in the raw material of the sand consolidation agent strengthens the network structure stability through chemical bonding, the hexakis(4-hydroxymethylphenoxy)cyclotriphosphazene realizes thermal stabilization through chemical bonding and physical dispersion, and the modified nano calcium zirconate provides physical support. The three components synergistically improve the heat resistance of the system.

The invention provides composite cementing material building floor sound insulation mortar and a preparation method thereof, and belongs to the technical field of novel building materials. Aiming at strong-alkalinity, high-humidity and intermittent impact coupling special environments such as hospitals and the like, a geopolymer precursor composed of metakaolin and blast furnace slag micro powder and an alkaline activator are introduced and interwoven with a cement hydration product to form an alkali-corrosion-resistant composite gel matrix; meanwhile, the composite corrosion inhibitor with the pH response release characteristic is adopted, and corrosion inhibition components are released during strong alkaline invasion to form a composite protective film; and regenerated elastic particles subjected to surface silanization treatment are selected as a damping filler. Under the synergistic effect of the three components, the mutually aggravated failure cycle of chemical erosion and mechanical impact is interrupted, so that the long-term sound insulation stability, mechanical durability and corrosion resistance of the sound insulation mortar in a severe environment are remarkably improved.

The invention relates to the field of carbon nanomaterials, and particularly discloses a preparation and storage method and application of near-infrared super carbon nanodots. The invention provides a preparation method of super carbon nanodots, which comprises the following steps: carrying out primary assembly by standing a carbon nanodot solution at normal temperature for a preset period of time, and then carrying out secondary assembly under low-temperature, dry and sealed conditions, thereby obtaining the super carbon nanodots. The light absorption range of the super carbon nanodots prepared by the method approaches to a near-infrared region, the light absorption wave band is greatly widened, and the super carbon nanodots show potential application value in the medical field. Compared with the prior art, the preparation method provided by the invention can be used for successfully preparing in a dry environment, and the dependence on a water medium in a traditional method is abandoned. Meanwhile, the super carbon nanodot prepared by the invention has the capability of being stored for a long time in an aqueous solution or dry state under a low-temperature condition; wherein when stored in a dry state, the structural stability and the performance integrity of the composite material can be more effectively maintained, and the effective storage life of the composite material is prolonged.

The invention relates to the technical field of safety assessment of buses, and discloses a safety assessment method and system for a tubular bus structure, and the system comprises a data collection unit, a data preprocessing unit, a feature extraction unit, a safety assessment unit, and a result output unit. According to the invention, electrical, thermal, mechanical and environmental characteristics are integrated, single-factor evaluation limitation is avoided, and the safety condition is accurately mastered; abnormal data are removed through abnormal value screening and replacement, interference is reduced, and data quality is improved through standardization processing; the resistance, the power, the heat generation amount, the heat conduction rate, the thermal expansion amount, the stress and the like are accurately calculated based on various data, and a combined influence factor can be obtained, so that a basis is provided for safety assessment in various aspects; by comparing the multi-dimensional safety assessment with various safety thresholds, electrical, thermal and mechanical potential safety hazards and environmental risks can be found in time, and the overall safety state can be comprehensively assessed; the evaluation result is clearly output, and a user can intuitively know the safety condition.

The invention belongs to the technical field of electrochemical catalytic materials, and relates to an efficient non-iridium nickel-based catalyst and a preparation method thereof. Comprising a nitrogen-sulfur bifunctional in-situ doped and modified nickel-cobalt layered double hydroxide nanosheet, 2, 5-dihydroxy terephthalamide, a conductive carbon carrier, a pore-forming agent, a surface wetting agent and a cross-linking agent. The nickel-cobalt layered double hydroxide is prepared by carrying out hydrothermal reaction and calcination treatment on nickel nitrate hexahydrate, cobalt nitrate hexahydrate, thiourea and melamine under an alkaline condition, and synergistic doping of nitrogen and sulfur bifunctional groups is realized; organic-inorganic interface interaction is introduced into 2, 5-dihydroxy terephthalamide, so that the structural stability of the material is enhanced. According to the invention, the current density, the mass activity, the gas production volume, the stability and the turnover performance are obviously improved. According to the invention, the defects of insufficient conductivity, limited active sites and poor cycling stability of the existing nickel-cobalt-based catalyst are effectively overcome, and a new thought is provided for developing a low-cost and high-performance electrochemical catalyst.

The invention discloses a construction method of an FRP (Fiber Reinforce Plastic) constrained fly ash geopolymer roadside filling body, which relates to the technical field of coal mining, and comprises the following steps: firstly, preparing a prefabricated FRP pipe, a filling mold bag, a filling material containing fly ash and the like, and a related filling system; after the working face is pushed, preparation work such as top plate supporting is carried out, and then the prefabricated FRP pipe and the filling mold bag are installed to form a to-be-filled pipe column. The fly ash and other materials are stirred by a stirring station to prepare the fly ash-based geopolymer filling material, the filling material is injected into a pipe column filling mold bag, and after filling, an ultra-high molecular weight polyethylene belt is used for winding. And constructing an air leakage prevention wall comprising a metal net, air duct cloth and a reinforcing mesh, and laying a concrete layer to seal the goaf. According to the method, waste such as fly ash is fully utilized, the construction cost is reduced, the thermal damage problem of the high-temperature mine filling body is solved, the bearing capacity of the filling body is improved by means of FRP constraint, the gob-side entry retaining roof supporting effect is guaranteed, the coal resource recovery rate is increased, and coal-pillar-free continuous mining is promoted.

The application discloses a kind of multi-source knowledge collaborative retrieval and intelligent analysis method of sodium-ion battery research and development, comprising: initialization sodium battery professional knowledge base;Sodium battery field data is converted into uniform intermediate layer text format and adaptive semantic segmentation is executed, and text block vectorization storage is generated;Receive natural language question, question intention is parsed by intelligent agent and is matched with the function description text of multiple information channels preset Semantics, according to the matching result, one or more of local sodium battery knowledge base, arXiv academic papers and internet networking search channel are dynamically called, and the returned results are de-duplicated and weighted sorting integration is executed;Multi-source integration result is injected into large language model to generate structured analysis report containing material property comparison table and performance parameter summary, and a bidirectional traceability mapping relationship between the generated result and the original information source is established.The application improves the research and development decision efficiency and result reliability in the research and development scene of sodium-ion battery.

The utility model relates to a splicing and inserting type coagulation reaction grid, in particular to a flocculation grid for water treatment, which is of a net-shaped structure formed by vertically and horizontally inserting hollow pipes, and frames are arranged on the edges of the net-shaped structure. The transverse pipelines are provided with holes matched with the longitudinal pipelines, and a stable framework is formed through precise insertion. Compared with the prior art, the flocculation grid has the remarkable advantages that the stability of the flocculation grid is greatly improved through the interpenetrating structure, and the flocculation grid can resist impact of complex water flow; the porosity can be flexibly changed by adjusting the number, spacing and the like of the pipelines to adapt to different water quality treatment requirements; the hollow pipe design saves materials, is light in weight and convenient to install and transport, and the pipeline can be made of metal or plastic, so that the performance and the cost are further optimized. The flocculation grid is applied to a flocculation basin, can effectively increase turbulent fluctuation of water flow and accelerate colloid flocculation, and has a good application prospect in the field of water treatment.

The application belongs to the field of portable lighting devices, and discloses a portable lighting device with a window breaking function. The movable connecting mechanism enables the light source module to switch between a first position and a second position relative to the shell. The piercing part is fixedly installed at the end of the shell and coaxially arranged with the shell when in the first position. The central axis of the shell and the central axis of the piercing part are arranged at an angle when the piercing part is in the second position. When the piercing part is in the second position, the light source module automatically deviates from the space in front of the glass when breaking the window, thereby reducing the scratches and impacts of the splashed debris on the light source module, prolonging the service life of the lighting component, and isolating and significantly reducing the stress borne by the battery compartment and the internal battery cell due to the non-collinear angle formed between the piercing part and the shell when the piercing part is in the second position.

The utility model relates to the field of building engineering, in particular to a shock insulation fireproof structure for building structural design. The utility model provides a shock insulation and fire prevention structure for building structural design, which can carry out fire prevention, cooling and heat insulation treatment on a rubber shock insulation support when the temperature is too high and maintain the structural integrity. A shock insulation fireproof structure for building structural design comprises fireproof plates, cooling plates, circulating pipelines, heat insulation plates and the like, the upper fireproof plate and the lower fireproof plate are arranged, the sides, close to each other, of the fireproof plates are connected with the cooling plates, and the cooling plates are connected with the circulating pipelines. The rubber shock insulation support is subjected to fire prevention through the fireproof plate and the fireproof corrugated pipe, the external temperature is isolated through the heat insulation layer and the heat insulation plate, and when the temperature sensor detects that the temperature is too high, water can enter the circulating pipeline for cooling; and the effects that fire prevention, cooling and heat insulation treatment can be conducted on the rubber shock insulation support when the temperature is too high, and the structural integrity is maintained are achieved.

The present invention discloses an electrostatic spray coating equipment, belonging to the technical field of coating equipment, an electrostatic spray coating equipment, including a box body, a cabinet door hinged on the front end face of the box body, a handle fixedly installed on the front end face of the cabinet door, a telescopic rod fixedly installed on the right side of the inner upper end face of the box body, a nozzle fixedly installed on the lower end of the telescopic rod, a turntable fixedly installed on the inner lower end of the box body, a shell is arranged on the upper side of the turntable, an external support fixing mechanism is arranged inside the shell, an expansion fixing mechanism is arranged on the lower side of the external support fixing mechanism, and an adsorption fixing mechanism is arranged on the upper side of the external support fixing mechanism. This scheme is particularly suitable for processing a shell made of special materials by arranging an external support fixing mechanism, and by cleverly using a support plate to support and fix the inside from the outside, the problem that the traditional external clamp fixing method easily causes the shell to deform can be effectively solved, and it can ensure that the original shape and structural integrity of the shell are maintained during installation or maintenance.

The invention discloses a high-energy-density semi-solid-state lithium battery and a preparation method thereof, and belongs to the technical field of semi-solid-state batteries. The semi-solid lithium battery comprises a positive electrode, a negative electrode and a semi-solid electrolyte, wherein the negative electrode is a silicon-based negative electrode; the semi-solid electrolyte comprises a skeleton layer and gel layers, wherein the gel layers coat the left and right surfaces of the skeleton layer; the framework layer is a mesoporous lithium lanthanum zirconium oxygen-based ceramic framework layer; the raw material of the gel layer comprises a functionalized acrylate gel precursor; the functionalized acrylate gel precursor comprises a functionalized acrylic monomer, a plasticizer and a functional aid in a mass ratio of (60-70): (20-30): (10-20). Through the gel layer, the skeleton layer and the semi-solid electrolyte of the gel layer structure, the buffer volume effect, the skeleton layer and the gel layer form a parallel ion transmission channel, the interface impedance is reduced, the conductivity is improved, and the high-safety semi-solid lithium battery with high ion conductivity and high energy density is obtained.

The utility model relates to the technical field of cables, and discloses an anti-bending flexible cable which comprises a shielding layer, a filling layer is arranged on the inner wall of the shielding layer, a flame-retardant assembly is arranged in the filling layer, a first supporting assembly is arranged on the outer side of the flame-retardant assembly, an inner core is fixedly connected in the supporting assembly, and a second supporting assembly is arranged in the inner core. A second supporting assembly is arranged on the outer side of the shielding layer, an anti-bending layer is fixedly connected to the outer side of the supporting assembly, a sheath layer is fixedly connected to the outer side of the anti-bending layer, the flame-retardant assembly comprises a plurality of filling sleeves, the outer sides of the filling sleeves are arranged on the outer side of the filling layer, and flame-retardant powder is arranged in the filling sleeves. According to the utility model, through the ammonium polyphosphate flame-retardant powder in the plurality of filling sleeves, flame is prevented from further spreading towards the inside of the cable, and the transmission of heat to an unburned part can be reduced, so that the flame-retardant effect is achieved, the safety of the cable and the surrounding environment is protected, and the fire is prevented from spreading due to the combustion of the cable.

The invention discloses a zirconia ceramic matrix with high thermal shock resistance as well as a preparation method and application thereof. The zirconia ceramic matrix comprises a matrix and a coating layer a; the matrix comprises the following components: 90-98 wt% of zirconium oxide; 1.5 to 8 wt.% of a stabilizing agent; % of a grain boundary regulating agent; the stabilizing agent is prepared from the following components in percentage by weight: 2.0 to 4.0 percent of Sc2O3, 0.5 to 1.5 percent of Yb2O3 and 0.3 to 1.0 percent of Er2O3; the grain boundary regulating agent is a composition of a boron source and an aluminum source; in the coating layer a, the molar ratio of zirconium to aluminum is (2-3): 1; and the component 1 is polyvinyl alcohol or polyvinylpyrrolidone. The fracture toughness, bending strength and thermal shock resistance of the ceramic matrix are effectively improved, and the overall mechanical property is remarkably improved. When the material bears thermal shock, the thermal shock resistance of the material is improved, and the application scene of the zirconia ceramic material is expanded.

This utility model discloses a vehicle, relating to the field of vehicle technology, comprising: a frame; a suspension assembly disposed on the frame; a front bumper assembly disposed at the front end of the frame; a headlight assembly disposed on the front bumper assembly; and a transition bracket connecting the suspension assembly and the headlight assembly, such that the frame, suspension assembly, front bumper assembly, headlight assembly, and transition bracket together form a frame structure. The technical solution provided by this utility model reduces the risk of fatigue failure of the front bumper assembly.

The invention provides a metal-based ceramic composite wear-resistant material and a preparation process thereof, and belongs to the technical field of metal-based ceramic materials. The preparation method comprises the following steps: firstly, forming a carboxylated carbon nanotube flexible layer and a metal Ti reinforced layer on the surface of a ceramic particle through two-stage coating of the ceramic particle and low-temperature ultrasonic relaxation cooperative treatment, then mixing with metal matrix powder, molding and sintering, and finally, carrying out ultrasonic relaxation treatment at 15-25 DEG C. The preparation method comprises the following steps: firstly, forming a carboxylated carbon nanotube flexible layer and a metal Ti reinforced layer on the surface of the ceramic particle; according to the process, low-temperature aging micro-crack initiation is effectively inhibited, the number of micro-cracks is only 1.8 / mm < 2 > after the material is aged for 1000 h at the temperature of-10 DEG C, the interface bonding strength reaches 256.7 MPa, the wear resistance attenuation rate is only 9.9%, and the material can be stably adapted to mining machinery scenes in alpine regions.

The utility model discloses a zinc alloy melt transfer device, and relates to the field of zinc alloy processing equipment. The crucible comprises a crucible body, a detection mechanism is arranged on one side of the crucible body, the crucible and the detection mechanism are arranged, the crucible serves as a main container for loading and transferring zinc alloy solution, and the crucible can bear high temperature and corrosion of the zinc alloy solution; the safety of the whole smelting and transferring process is guaranteed, the crucible body is the core of the crucible and bears the zinc alloy solution, the stability and durability in the high-temperature environment are guaranteed through material selection and structural design of the crucible body, meanwhile, the detection mechanism plays a crucial role in the zinc alloy solution transferring process, and the safety of the whole smelting and transferring process is guaranteed. The potential toppling risk is prevented by monitoring the balance state of the crucible body in real time, a heat insulation seat in the detection mechanism effectively protects a balance detector from being affected by high temperature, and the balance detector monitors the balance of the crucible in real time.

The utility model discloses a lower horizontal supporting structure of a nuclear power station steam generator, and relates to the technical field of horizontal supporting structures. The device comprises a circular bottom plate, wherein a plurality of quick mounting mechanisms and fixing mechanisms are arranged on the circular bottom plate; the rapid installation mechanism comprises a first fixing assembly, a first rapid installation assembly and a second rapid installation assembly, the first fixing assembly comprises a U-shaped supporting plate fixedly installed on the outer wall of the circular bottom plate, an L-shaped supporting plate is fixedly installed at the top of the U-shaped supporting plate, and a ground nail penetrates through the top of the U-shaped supporting plate. By means of the rapid installation mechanism, the problems that more workers need to participate in adjustment or replacement of the supporting structure, the workload and the labor intensity of the workers are increased, the workers need to spend more time to complete maintenance tasks, the maintenance time is prolonged, and normal operation of nuclear power station equipment is affected are solved.

The utility model relates to the technical field of batteries, and discloses a collector plate structure which comprises a shell assembly, a pole is arranged in the center of the top of the shell assembly, a collector plate is welded to the top of the inner side of the shell assembly, a middle protruding face is arranged in the center of the top face of the collector plate, and a middle thinning groove is formed in the top face of the middle protruding face. According to the utility model, after the through hole of the pole mentioned in the step 3 and the collector plate are assembled, a welding position is formed at the contact part, and then laser landing edge welding is carried out, so that a battery manufacturer can ensure high quality and high reliability of a battery assembly by adopting a laser landing edge welding technology; and meanwhile, the production efficiency is improved, the cost is reduced, laser welding becomes one of the preferred welding technologies in the battery manufacturing industry through the advantages, and the beneficial effects of improving the production efficiency and controlling the cost are achieved.

The invention belongs to the technical field of sand consolidation agent preparation, and particularly relates to a sand consolidation agent and a preparation method thereof. The sand consolidation agent is composed of a component A and a component B, the component A is prepared from the following raw materials: biphenyl novolac epoxy resin, hexa (4-hydroxymethyl phenoxy) cyclotriphosphazene, modified nano calcium zirconate, cage-shaped octa (aminophenyl) silsesquioxane, n-butyl glycidyl ether, a KH-550 silane coupling agent, polyether amine, fumed silica and a de-foaming agent; the component B is prepared from the following raw materials: polyborosilazane and 2-ethyl-4-methylimidazole. Cage-shaped octa (aminophenyl) silsesquioxane in raw materials of the sand consolidation agent strengthens the stability of a network structure through chemical bonding, hexa (4-hydroxymethylphenoxy) cyclotriphosphazene achieves thermal stabilization through chemical bonding and physical dispersion, and modified nano calcium zirconate plays a physical support role. The three synergistically improve the heat resistance of the system.

The invention discloses a CuFeS2 and FeS2 composite Fenton-like catalyst as well as a preparation method and application of the CuFeS2 and FeS2 composite Fenton-like catalyst. According to the preparation method disclosed by the invention, the natural pyrite does not need a further forming process and has good adsorbability on copper ions, and a Cu element is embedded into a pyrite crystal lattice through a citrate dipping-anaerobic calcining process, so that the CuFeS2-FeS2 composite Fenton-like catalyst with a heterostructure is formed. The catalyst disclosed by the invention can activate peroxymonosulfate and hydrogen peroxide to generate active oxygen species, so that different types of organic pollutants such as sodium dodecyl benzene sulfonate, tetracycline hydrochloride, rhodamine B and the like which are common in water, such as surfactants, antibiotics, dyes and the like can be quickly degraded and mineralized. The granular catalyst with good catalytic performance is prepared from the pyrite with huge reserves in nature as a raw material through a simple dipping-calcining process, and the method has the advantages of high feasibility, low cost, easiness in industrial preparation and the like.