39results about How to "Maintain structural integrity" patented technology

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 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 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 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 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 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 application discloses to belong to the technical field of clearance measurement, and particularly relates to a high-temperature-resistant shell-penetrating eddy current blade tip clearance measuring device and method, the device comprises: a sensor probe module, a signal conditioning module, a data acquisition module and a data processing module; the sensor probe module is installed on the outer wall of the casing; the sensor probe module comprises: a permanent magnet excitation source, a soft magnetic core and a receiving coil; the signal conditioning module is electrically connected with the receiving coil, amplifies, filters and integrates the weak induction signal; the data acquisition module is electrically connected with the signal conditioning module, converts the analog signal into a digital signal; and the data processing module processes the collected digital signal and extracts the blade tip clearance information.

The utility model relates to the field of LED display screens, in particular to a movable wine bottle LED display screen. Comprising a base, the base is connected with a supporting frame in a buckled mode, the supporting frame is connected with a connecting frame in a buckled mode, the connecting frame is connected with a top frame, the top frame is detachably connected with a top cover, the supporting frame, the connecting frame and the top frame are connected with a display screen, the display screen is a flexible LED display screen, and the top frame and the connecting frame are each provided with a hollowed-out groove. The mounting plate is rotationally connected with a bracket, the bracket is rotationally connected with universal wheels, the bracket is rotationally connected with a screw rod, the screw rod is connected with an adjusting disc, the screw rod is in threaded connection with a supporting block, the supporting block is in sliding connection with the bracket, the supporting block is connected with a T-shaped block, the bracket is provided with a T-shaped groove, and the T-shaped block is in sliding connection with the T-shaped groove. According to the utility model, the display screen device has mobility, can be easily moved among different places, and meets diversified display requirements.

The utility model belongs to the technical field of aircrafts, and particularly provides a water-proof structure for a wingtip of a fixed wing, which comprises a binding post and an insulating sealing screw sleeve, the binding post is sleeved in the insulating sealing screw sleeve, and the problem that the wingtip of a wing of an unmanned aerial vehicle cannot be water-proof or the water-proof performance of gluing is poor is solved. According to the utility model, moisture is prevented from entering electronic components, circuits and the like inside the wing tip of the unmanned aerial vehicle, and equipment faults caused by short circuit, corrosion and the like are avoided, so that the flight safety of the unmanned aerial vehicle under various weather conditions is guaranteed, the risk of flight accidents is reduced, and the flight safety is enhanced.

The application discloses an impact-resistant and wear-resistant epoxy resin modified mortar and a preparation method thereof, and relates to the technical field of mortar.The application comprises the following raw materials in mass parts: deionized water 170-190 parts, modified boron nitride synergist 13.13-14.38 parts, water reducing agent 0.8-1.2 parts, tributyl phosphate 0.6-0.8 parts, composite modified porous polysiloxane microspheres 26.25-28.75 parts, water-based epoxy resin 21-23 parts, Portland cement 420-460 parts, sulphoaluminate cement 105-115 parts, concrete expansive agent 15.75-17.25 parts, river sand 1050-1150 parts, water-based epoxy curing agent 27.3-29.9 parts.The introduction of the modified boron nitride synergist and other raw materials in the application simultaneously improves the compressive strength, the bending strength, the impact strength, the wear resistance, the anti-cavitation ability, the aging resistance and the alkali corrosion resistance.

This invention discloses a hydrogel patch for repairing gastric perforation and its preparation method, belonging to the field of biomedical materials technology. The preparation method is as follows: Acryloylvaline, acrylic acid, methylenebisacrylamide, compound A, and a photoinitiator are dissolved in an alcohol solvent, and after defoaming, a precursor solution is obtained. The precursor solution is then placed in a mold and cured by ultraviolet light. The resulting hydrogel is immersed in a hydrochloric acid solution to displace the alcohol solvent, yielding the hydrogel patch for repairing gastric perforation. The hydrogel patch provided by this invention has advantages such as resistance to strong acid corrosion, good biocompatibility, low swelling rate, and stable adhesion under fluctuating pH conditions. This strong and stable adhesion ensures that the hydrogel can adhere reliably and persistently to the gastric perforation site in a dynamic gastric acid environment, providing a stable platform for drug delivery, thereby potentially shortening surgical time and promoting wound healing.

The utility model relates to the technical field of mirror frame, disclose suitable for the children mirror frame of sports type, including two parallelly arranged mirror frame and mirror leg, have the bridge of the nose between two mirror frames, the bridge of the nose connects two mirror frames as a whole, the outside of mirror frame is equipped with the stake head, the stake head is connected with the elastic hinge that can elastically bend deformation and elastic reset, and the mirror leg is connected with the elastic hinge, so that the mirror leg elastically bends deformation or elastic reset relative to the mirror frame, when the external impact force acts on the mirror leg, the elastic hinge reduces the direct action of impact force to the mirror frame and stake head with the aid of the characteristic of elastic bending deformation, and moreover, the elastic hinge still has the elastic reset ability, thereby keeping the structural integrity and wearing function of the whole mirror frame, and the safety and reliability of wearing are enhanced.

This utility model discloses a connector with a snap-fit ​​mechanism, comprising a connector body, a tightening cap, and a fastening nut. The connector body is hollow and has a through hole. A first thread and a second thread are provided on the connector body. Several snap-fit ​​blocks are provided at the end of the connector body near the first thread. The tightening cap is threadedly engaged with the first thread. The inner wall of the tightening cap has an abutting inclined surface for contacting the snap-fit ​​blocks, causing them to retract and tighten around the bellows. The fastening nut is threadedly engaged with the second thread. Several positioning blocks are provided on the outer peripheral wall of the other end of the connector body. The end of each positioning block near the second thread is higher than the end of the snap-fit ​​block away from the second thread. The end of the positioning block near the second thread is connected to the end of the snap-fit ​​block away from the second thread by a smooth inclined surface. Its structure is simple, positioning and installation are convenient, fastening is reliable, and it is easy to tighten promptly when loose, resulting in good performance.

The application discloses a temperature response adhesion intelligent gelatin-based conductive hydrogel and a preparation method and application thereof. The hydrogel takes methacrylated gelatin as a main skeleton component, takes polymeric gallic acid as a temperature response functional component, and takes PEDOT:SCS-SH as a conductive unit. In an aqueous system, in-situ radical polymerization is conducted under the initiation of ammonium persulfate / tetramethylethylenediamine to construct a multiple cross-linking network structure. The methacrylated gelatin forms a continuous chemical covalent cross-linking network as a main skeleton. The polymeric gallic acid interacts with the skeleton network through dynamic hydrogen bonds to endow the material with temperature-dependent adhesion regulation characteristics. The PEDOT:SCS-SH is embedded in the system to form an electron-ion synergistic conductive path. The hydrogel obtained in this way has good flexibility, mechanical stability, electrical conductivity and temperature response adhesion performance, and is suitable for fields of flexible sensors, wearable electronic devices and biological interface attachment materials.

The application discloses a kind of multilayer biomass cellulose adsorption materials and its preparation method and application, belong to biomass material and sewage treatment technical field.The application first obtains PEI-cellulose by polyethyleneimine modification to biomass cellulose;Then PEI-cellulose and chitosan are crosslinked to prepare surface layer adsorption liquid;While unmodified biomass cellulose and polyvinyl alcohol are mixed to prepare middle layer adsorption liquid;Finally, by layer liquid nitrogen freeze forming, freeze drying and alkali washing treatment, obtain the biomass cellulose adsorption material with sandwich multilayer structure.The multilayer adsorption material prepared by the application has positive electricity on outer layer, can be efficiently adsorbed by electrostatic effect in water with negative electricity micro / nano plastic;Middle layer is neutral, can be used to adsorb organic pollutants carried by micro / nano plastic.The material of the application is low in cost, simple in preparation process, fast in adsorption rate, high in removal rate and reusable, and has good application prospect in water treatment field.

The invention discloses a preparation method of a sodium ion battery biomass-based hard carbon negative electrode material with high initial efficiency, which comprises the following steps: S1, biomass precursor preparation: crushing a biomass raw material to obtain a biomass precursor; s2, preparation of a hydrothermal precursor: soaking in an acid solution, and then washing, centrifuging and drying to obtain the hydrothermal precursor; s3, preparation of a carbonized precursor: soaking in a mixed solution of a reducing agent and a surfactant, transferring the mixed solution into a reaction kettle for heating reaction, cooling to room temperature, and centrifugally drying to obtain a pre-carbonized precursor; s4, pre-carbonization: carrying out pre-carbonization treatment, and then crushing and sieving to obtain a pre-carbonized material; s5, high-temperature coating: carrying out coating treatment to obtain a high-temperature carbonized precursor; and S6, high-temperature carbonization: carrying out high-temperature carbonization treatment to obtain the biomass-based hard carbon negative electrode material of the sodium-ion battery. The invention has the characteristics of high first coulombic efficiency and good cycling stability.

This utility model discloses a container house fixed with windproof components, including an outer box, with wind-guiding plates connected to the front and back of the outer box, a steel frame connected to the bottom of the outer box, a set of support rods connected to the bottom of the steel frame, and a pre-embedded block connected to the bottom of each support rod. A wind-guiding cavity is formed in the inner wall of the outer box, and a connecting plate is connected to the upper surface of the outer box, with multiple air outlets on the upper surface of the connecting plate. This utility model disperses strong winds through the wind-guiding plates, reducing the direct impact of wind on the outer box and protecting the house structure from damage. Strong winds are guided to the wind-guiding cavity and further weakened before being discharged through the air outlets, reducing the pressure of the wind on the outer box, thereby improving the stability of the overall structure and preventing damage to the steel cables due to strong winds. This ensures the effectiveness of the windproof system. The combination of dispersing and weakening strong winds reduces the risk of the outer box being directly impacted and deformed by strong winds.

The application discloses a kind of metal organic framework composite material and its preparation method and application, preparation method includes: preparation includes uniform benzene trimellitic acid, polymer and first solvent spinning fluid, electrostatic spinning is carried out, obtains fiber or fiber membrane, it is immersed in copper acetylacetonate solution, reaction, generates metal organic framework composite material;The reaction time of control reaction is greater than or equal to 60min, copper acetylacetonate solution is prepared by dispersing copper acetylacetonate in second solvent;The method can make metal organic framework (Cu-BTC) on the surface of polymer fiber with mild conditions Realize heterogeneous nucleation and the high load controlled growth of hexagonal flaky crystal form, crystal structure defect is less, it is favorable to improve the performance of composite material, and then it is favorable to be applied in preparation of heterogeneous catalytic material, drug delivery material, gas adsorption material or environmental remediation material.

This invention relates to the field of injectable hydrogel dressings, specifically disclosing a porous microsphere-reinforced injectable in-situ molded hydrogel dressing and its preparation method. The dressing includes a porous microsphere component and a photocrosslinkable hydrogel matrix component. The porous microsphere component serves as a reinforcing filler dispersed within the photocrosslinkable hydrogel matrix component. A precursor solution of the photocrosslinkable hydrogel matrix component permeates into the pores of the porous microsphere component, forming a mechanically anchored structure after in-situ photocrosslinking and curing. It also includes a natural antibacterial and healing-promoting component, fenugreek oil, with a mass fraction of 3%-8%. The porous microsphere component has a compressive modulus of 150-300 kPa, and its modulus retention rate is not less than 89% after 10 compression cycles. This design balances the convenience of injectability with reliable mechanical support, endowing the hydrogel with sustained healing-promoting activity.