248results about How to "Reduce porosity" patented technology

The invention discloses a silver-coated copper powder preparation method based on nickel layer enhanced palladium catalysis and active hydrogen synergistic deposition, and relates to the technical field of powder surface treatment. The method specifically comprises the following steps that copper powder is soaked in acid liquor, then filtering, washing and drying are conducted, and pretreated copper powder is obtained; immersing the pretreated copper powder into a hydrochloric acid solution of nickel chloride hexahydrate, and then filtering, washing and drying to obtain sensitized copper powder; immersing the sensitized copper powder into a hydrochloric acid solution of palladium chloride, and then filtering, washing and drying to obtain activated copper powder; mixing the activated copper powder with the reduction solution to obtain a solid-liquid mixture, adding a silver-ammonia solution into the solid-liquid mixture, heating for reaction, and filtering after the reaction is finished to obtain a solid product; and washing and drying the solid product to obtain the silver-coated copper powder based on nickel layer enhanced palladium catalysis and active hydrogen synergistic deposition. The silver-coated copper powder with a compact silver layer and high binding force is prepared through the ternary synergistic effect of nickel layer sensitization, palladium nanometer activation and formaldehyde reduction.

This invention relates to the field of thermal insulation materials, specifically to an inorganic silicon crystal fire-resistant thermal insulation material for fireproof air ducts and its preparation method. The material comprises inorganic silicon crystal powder, hollow microspheres, composite binders, reinforcing fibers, surface modifiers, nano-antibacterial agents, crack-resistant agents, flame-retardant synergists, and intumescent flame-retardant microcapsules. The inorganic silicon crystal powder is activated by calcination, the microspheres are pretreated with coupling agents and coated with silica sol, the binder is a compound type, the fibers are grafted, the antibacterial agent is loaded onto a carrier, and the flame-retardant microcapsules have a specific core and shell. All components work synergistically to ensure performance. This invention improves the material's fire resistance, thermal insulation, and mechanical properties, integrates antibacterial and flame-retardant functions, optimizes the process to ensure stable performance, reduces fire risk, and meets the high-performance and high-stability requirements of high-end building fireproof air ducts.

The application belongs to the technical field of copper-based diamond composite materials, and particularly relates to a diamond copper-based composite material and a preparation method thereof. The preparation method comprises the following steps: mixing modified diamond powder and copper powder by ball milling, and obtaining a diamond copper core material after hot-pressing sintering; activating the diamond copper core material, then magnetron sputtering a Ni / Pr alloy target material onto the upper and lower surfaces of the activated diamond copper core material to form a Ni / Pr composite intermediate layer; vacuum welding copper sheets on the upper and lower surfaces of the Ni / Pr composite intermediate layer to obtain the diamond copper-based composite material. The diamond copper-based composite material prepared by the application has high density, excellent thermal conductivity, low thermal expansion coefficient and is convenient to process.

This invention belongs to the field of cable technology, specifically a thin-walled oxygen-barrier high-temperature resistant cable, comprising a conductor core and a thin-walled outer sheath. The conductor core has a high-temperature resistant insulation layer made of polyetheretherketone (PEEK) composite material on its outer side. Between the high-temperature resistant insulation layer and the thin-walled outer sheath, from the inside out, are sequentially arranged a ceramicized oxygen barrier layer and a flame-retardant reinforcement layer. The ceramicized oxygen barrier layer is a nano-modified ceramicized silicone rubber layer with a thickness of 0.05–0.15 mm, including an outer layer doped with silicon carbide whiskers and an inner layer doped with zinc borate. This invention prepares an ultra-thin ceramicized layer through gradient doping, resolving the contradiction between thin-walled design and oxygen barrier properties, and effectively improving the interfacial peel strength. This reduces the cable's outer diameter and bending radius, making the cable lightweight and suitable for high-dynamic applications.

The utility model belongs to the technical field of automobile part casting molds, and provides an integrated semi-solid magnesium alloy high-pressure casting mold for a new energy automobile, which comprises a movable mold assembly, a fixed mold assembly, a sliding block mechanism, a sealing assembly, an exhaust assembly and a pouring system, the sealing assembly is arranged between the movable mold assembly and the fixed mold assembly, a sealing cavity is formed between the movable mold assembly and the fixed mold assembly, a product cavity is further formed between the movable mold assembly and the fixed mold assembly, and the product cavity comprises three cavities used for forming a first main body part, a second main body part and a third main body part respectively; the sliding block mechanism is arranged on the movable mold assembly; the exhaust assembly comprises an exhaust part; the pouring system comprises a pouring gate. Compared with the prior art, the pouring gates are asymmetrically distributed along the product cavity, semi-solid magnesium alloy slurry can be guided to be filled in a stable laminar flow state, air entrapment, turbulent flow and impact are reduced, the defects of cold shut and shrinkage porosity of products are reduced, and the forming precision and mechanical property of the integrated vehicle-mounted decoration plate are improved.

The invention relates to a high-entropy ceramic capacitor, a ceramic dielectric material for the high-entropy ceramic capacitor and a preparation method, the raw material composition of the ceramic dielectric material comprises NaNbO3, (Na0. 2Bi0. 2Ba0. 2Mg0. 2Zn0. 2) TiO3, H3BO3, CaZrO3 and the like, by controlling the raw material ratio and preparation process parameters of sodium niobate and adopting a multi-step grinding synthesis method, NaNbO3-based high-entropy ceramic is designed, so that the insulation resistance of the high-entropy ceramic capacitor is effectively improved; on the other hand, chemical modification treatment is carried out by introducing (Na0. 2Bi0. 2Ba0. 2Mg0. 2Zn0. 2) TiO3, H3BO3, CaZrO3 and the like, so that the structural stability of an antiferroelectric phase is enhanced, the compactness of the material is improved, and finally, the energy storage performance of the material is optimized and improved.

This utility model provides a cage injection mold with a rapid preheating structure, comprising: a moving mold at the bottom of a fixed mold; a sprue sleeve passing through the center of the fixed mold on the side away from the moving mold; a mold core assembly positioned at the center of the fixed mold and the moving mold on the side close to each other; a hot runner heating module sleeved on the bottom of the sprue sleeve at the top; and a heating rod heating module passing through the center of the mold core assembly; and several junction boxes bolted to the side walls of the fixed mold and the moving mold. In the mold preheating process, based on heat conduction heating using a mold temperature controller, a hot runner heating module and a heating rod heating module are installed at the core of the mold. These are connected to a power plug via junction boxes to achieve electric heating at the core, which assists in rapid mold preheating and greatly improves processing efficiency. During injection, the temperature of the liquid plastic does not drop when it enters the molding cavity composed of the fixed mold core and the moving mold core, improving the quality of the injection molded parts. Furthermore, the injection runner can be diverted to allow one mold to process multiple injection molded parts simultaneously, improving production efficiency.

A long tubular cavity casting side core-pulling mold, including side core-pulling one and side core-pulling two, which are movably connected, one end of the side core-pulling one is connected with the left core mold integrally, the upper end face of the other end is concave with a groove, the left end of the groove is closed, the right end extends to the right end face of the side core-pulling one to form an opening, the closed end of the groove is a semicircular structure, the opening of the groove is gradually tightened inward at both ends, the opening width is less than the diameter of the semicircular closed end, the side core-pulling two has a protrusion at one end, which is matched with the groove, when the groove and the protrusion are closed, the side core-pulling one and the side core-pulling two are connected to form a detachable conical platform, the diameter gradually decreases from the leftmost side of the side core-pulling one to the rightmost side of the side core-pulling two, the other end of the left core mold is fixed with the left mold connecting plate through a connecting column. Improve production efficiency and production yield.

This invention discloses a multi-stage pressure- and temperature-controlled molding method for ablation-resistant missile engine casing, within the field of missile engine combustion chamber technology. The method includes the following steps: S1: Tooling and mandrel pretreatment: Cleaning and defect inspection of the mandrel for mold placement, and treating the mandrel with a release agent; S2: Metal liner surface treatment: Grinding and cleaning the outer surface of the metal liner; S3: Applying epoxy film: Applying an epoxy film to the treated outer surface of the metal liner. This invention, through meticulous pretreatment of the tooling and mandrel, grinding and cleaning of the metal liner, and precise application of the epoxy film, combined with a multi-layer intermediate compaction process during composite material winding, effectively improves the interlayer bonding strength between the metal liner and the composite material winding layer, reduces the porosity of the winding layer, and ensures the density and stability of the casing structure.

The application discloses a solid waste-based self-compacting super-waterproof backfill material and a preparation method thereof, and the solid waste-based self-compacting super-waterproof backfill material is formed by mixing and stirring slag and a solid waste-based high-impervious curing agent and water; the solid waste-based high-impervious curing agent comprises steel slag powder, granulated blast furnace slag, fly ash, red mud, industrial by-product gypsum, hydrophobic organic acid salt, alkali metal lactate, high-performance polycarboxylate water reducer and dispersant. Physical-chemical reactions occur in the mixing and stirring, a large amount of cementing bodies are generated in the curing process, the inter-particle pores of soil are filled, the structure is compacted, the strength is high, and the imperviousness is good; the application focuses on the solid waste resource utilization demand, has the advantages of high solid waste utilization rate, low economic cost, high fluidity, good waterproof performance and the like; and the application changes the need of adding cement clinker in traditional backfill materials, and is more economical and environment-friendly.

This invention provides an arc-based additive and subtractive manufacturing method based on interlayer morphology reconstruction, belonging to the technical field of metal additive manufacturing. The method includes depositing an Nth layer of metal material on a substrate to form a deposition layer with a natural wavy morphology; acquiring actual morphology data to identify peak and valley distribution characteristics and planning a subtractive manufacturing path; selectively turning the deposition surface to obtain an anti-wavy substrate; detecting the surface temperature field of the anti-wavy substrate and cooling or preheating the substrate; and repeatedly performing arc-based additive deposition of the N+1th layer on the temperature-controlled anti-wavy substrate to complete the additive manufacturing process. This invention solves the technical problem in existing technologies where the wavy morphology between layers is not addressed, resulting in subsequent deposition layers covering and permanently remaining inside the workpiece, leading to a reduced yield. It achieves the technical effect of suppressing interlayer defects, reducing porosity by 90%, and improving internal quality.

This invention discloses an optimized method for stator and rotor welding processes in the field of motor manufacturing, comprising the following steps: improving welding quality through pretreatment, coating with modified composite materials, and optimizing laser welding parameters. During pretreatment, the stator and rotor areas to be welded are sanded with 800-1200 grit sandpaper, followed by ultrasonic cleaning with acetone or alcohol for 10-15 minutes to achieve a surface roughness Ra ≤ 1.6 μm; a 0.1-0.3 mm thick layer of modified composite material is coated onto one surface and dried at 80-120°C for 1-2 hours; laser welding is employed, with the molten pool temperature monitored at 1800-2200°C during welding; immediately after welding, the welded parts are placed in a holding furnace at 200-300°C for slow cooling for 2-4 hours, and then cooled to room temperature at a rate of 5-10°C / min. This method effectively improves the strength, toughness, and crack resistance of the welded joint, reduces the heat-affected zone, and minimizes deformation.

The application relates to the technical field of special functional coating materials for lost foam casting, and particularly discloses a cast iron lost foam and universal coating for full mold casting and application thereof. The cast iron lost foam and universal coating for full mold casting comprises quartz powder, calcined bauxite, modified fly ash microbeads, microcrystalline graphite and an additive; the modified fly ash microbeads comprise fly ash and a composite coating layer coated on the surface of the fly ash, and the composite coating layer comprises aluminum oxide nanosheets and magnesium ion doped amorphous substances. Through functional design of key components, the coating can dynamically adjust its performance according to the temperature and chemical environment of the contact interface, can meet the high air permeability requirement of the lost foam process, can take into account the differentiated requirements of different cast iron materials on high-temperature strength, permeability resistance and interface purity, and can be compatible with both conventional negative pressure and non-negative pressure conditions, so that the universal coating is realized, and production management and supply chain processes are greatly simplified.

The application discloses an antioxidant composite ceramic aerogel and a preparation method thereof, and belongs to the technical field of composite ceramic aerogels.The main body of the antioxidant composite ceramic aerogel is a silicon nitride aerogel, the nanostructure of the silicon nitride aerogel is one of one-dimensional silicon nitride nanowires and two-dimensional silicon nitride nanobands or a combination of the two nanostructures, and a mullite coating and a copper-nickel metal coating are sequentially coated on the nanostructure of the silicon nitride aerogel from inside to outside.The application can solve the technical problem that the prior art cannot prepare silicon nitride ceramic aerogels which can stably serve in a high-temperature oxygen environment at low cost and in batches.

This invention discloses a sodium-ion battery cathode material, its preparation method, and a sodium-ion battery. The preparation method of the sodium-ion battery cathode material includes the following steps: adding a sodium source, an iron source, a phosphorus source, a carbon source, and an interface segregation regulator to water and mixing them to obtain a precursor slurry; milling the precursor slurry to reduce its D... 50 A fine slurry with a particle size ≤1μm is obtained; the fine slurry is spray-dried to obtain a secondary particle precursor; the secondary particle precursor is pre-sintered under an inert atmosphere to enrich the interfacial segregation regulator on the particle surface and grain boundary region, forming a pre-sintered precursor; the pre-sintered precursor is sintered under an inert atmosphere to obtain a sodium-ion battery cathode material. The method of this invention can prepare a sodium-ion battery cathode material with excellent electrochemical performance and high flat density.

This invention discloses a concrete mix design and manufacturing method for underground engineering concrete in a coupled environment of underground environment and load, relating to the field of underground engineering concrete technology. It aims to address the problem that traditional concrete mix design does not fully consider the coupling effect of underground environment and load. The underground environment includes groundwater erosion, wet-dry cycle, and temperature fluctuation; the load includes stress ratio. α s Dynamic load frequency and dynamic load amplitude α d This leads to technical problems such as insufficient erosion resistance, crack resistance, and mechanical stability of concrete, resulting in a short service life. This mix design is based on quantitative analysis of coupled environmental parameters. With cement, composite admixtures, recycled aggregates, modifiers, water, and additives as core components, the basic mix proportion is determined through a mapping model between "environment-load" coupled parameters and component content. The target mix proportion is then obtained through orthogonal experimental optimization. The manufacturing method includes four core steps: raw material pretreatment, graded mixing, gradient curing, and coupled environmental simulation curing.

The invention discloses a cement stabilized macadam test piece and a preparation method thereof, and belongs to the technical field of traffic civil engineering. The test piece is prepared from the following components in parts by mass: 85 to 92 parts of graded aggregate, 6 to 12 parts of composite cementing material and 0.3 to 0.8 part of special admixture; the graded aggregate is of a skeleton-transition-filling three-stage structure, and the filling aggregate contains surface modified silicon carbide microbeads; and the special additive contains a slump-retaining polycarboxylic acid water reducing agent and a hydroxypropyl methyl cellulose-xanthan gum composite adhesive. The components of the test piece have a synergistic effect, and through multi-dimensional synergy of aggregate grading, modified filler and admixture regulation and control, the problems of large-particle-size broken stone sinking, uneven aggregate distribution and segregation, insufficient compactness and the like in the forming process of the cement stabilized broken stone test piece are effectively solved; the compactness, the mechanical strength and the durability of the cement stabilized macadam test piece containing the large-particle-size macadam are remarkably improved, and the composition materials of the cement stabilized macadam test piece can be used for base layer construction of high-grade highways and municipal main roads and meet the heavy-load traffic requirement.

This invention discloses a chromium oxide-based coating, its preparation method, and its application. The preparation method of the chromium oxide-based coating of this invention includes the following steps: 1) dispersing ceramic particles and / or metal particles, chromium oxide particles, and a binder in water, wherein the particle size of the ceramic and metal particles is smaller than that of the chromium oxide particles, followed by spray drying to obtain composite particles; 2) thermally spraying the composite particles onto the surface of a substrate to obtain the chromium oxide-based coating. The chromium oxide-based coating of this invention possesses both high hardness and excellent toughness, exhibiting superior resistance to friction and wear, and can be used as a wear-resistant coating for the surface of metal parts, making it suitable for large-scale industrial applications.

The application belongs to the field of batteries and relates to a blended polymer full solid-state electrolyte containing nano-powder rubber, a preparation method of the blended polymer full solid-state electrolyte and a lithium ion battery. The full solid-state electrolyte comprises a polymer blend, a lithium salt and nano-powder rubber; the polymer blend comprises polyacrylonitrile and polypropylene carbonate; the weight content of the polymer blend is 25-70%, the weight content of the lithium salt is 20-50% and the weight content of the nano-powder rubber is 3-35% based on the total weight of the full solid-state electrolyte. The full solid-state electrolyte has higher conductivity and better cycle performance.

The invention discloses corrosion aluminum powder and a preparation method and application thereof, and the preparation method comprises the following steps: S1, carrying out plasma passivation treatment on aluminum powder to obtain surface modified aluminum powder with an amorphous aluminum oxide layer; and S2, carrying out surface micro-corrosion on the surface modified aluminum powder, and then drying and grading to obtain the corroded aluminum powder. The method comprises the following steps: forming an amorphous aluminum oxide layer on the surface of aluminum powder; and then micro-corrosion is carried out on the amorphous aluminum oxide layer, a rich pore structure is formed on the amorphous aluminum oxide layer, and after corrosion is completed, the amorphous aluminum oxide layer can be automatically formed on the corrosion surface again. The surface of the obtained corrosion aluminum powder is completely wrapped by the amorphous aluminum oxide layer, so that the leakage current can be greatly reduced, and the electrochemical stability of the anode foil is greatly improved; the porous carbon has certain roughness and rich pore structures, and the specific surface area and the specific volume are greatly increased; the micro-corrosion has no negative influence on the mechanical strength of the aluminum powder, and ensures that no micro-crack appears on the surface of the anode foil.

The application relates to the technical field of high polymer composite materials, and particularly discloses a resin applied to motor rotor carbon fiber winding and a preparation method thereof. The resin comprises the following raw materials: 40-60 parts of a tetrafunctional phenolic epoxy resin, 20-40 parts of a biphenyl type epoxy resin, 15-20 parts of a core-shell rubber, 0.1-0.2 parts of triphenylphosphine, 20-25 parts of a curing agent, 0.5-1 part of an accelerator, 3-5 parts of nano fillers, 1-2 parts of a silane coupling agent and 5-8 parts of an active diluent. The resin prepared by the application has excellent high-temperature resistance and high elongation at break, and can be applied to motor rotor carbon fiber winding.

The present invention relates to a copolymer, a slurry composition comprising the copolymer, a separator, and a secondary battery, the copolymer comprising sulfur-containing monomer units, acrylonitrile monomer units, acrylate monomer units containing linear alkyl groups having 1 to 20 carbon atoms, and vinyl acetate monomer units.

The invention belongs to the technical field of road engineering, and discloses a concrete bridge deck pavement structure and a construction method.The concrete bridge deck pavement structure comprises a concrete base layer, the top of the concrete base layer is covered with a waterproof binder, and the top of the waterproof binder is covered with an asphalt concrete mixture; the top of the asphalt concrete mixture is covered with a stone mastic asphalt mixture; the waterproof binder adopts an asphalt binder or an epoxy resin binder; the paving thickness of the asphalt concrete mixture is 4.5 cm, and the paving thickness of the stone mastic asphalt mixture is 4 cm. By optimizing the thickness combination of the upper surface layer and the lower surface layer and improving a waterproof binder material and a forming process, light weight, durability and economization of bridge deck pavement are achieved, and the bridge deck pavement structure can be suitable for bridge engineering in high-temperature and rainy areas.

The invention discloses an anti-aging and anti-electromagnetic shielding cable and a preparation method thereof, and belongs to the field of high voltage and the technical field of materials, the anti-aging and anti-electromagnetic shielding cable structurally contains a polyurethane-polyethylene copolymer and a flame-retardant and anti-electromagnetic sheet composite carrier, contains a polyurethane chain segment which is connected with a polyethylene main chain through a covalent bond, has no interface separation risk, and has good anti-aging and anti-electromagnetic shielding effects. Polyethylene is resistant to acid, alkali and salt mist, a carbamate group in a polyurethane chain segment can capture free radicals generated by photooxidation and thermal oxidation of polyethylene, aging is delayed from the molecular level, and the flame-retardant anti-electromagnetic sheet composite carrier endows the cable with good aging resistance and anti-electromagnetic shielding characteristics; the lamellar structure of the sheet-shaped carrier can block heat transfer and combustible volatilization, and the lamellar structure and the sheet-shaped carrier synergistically improve the flame-retardant efficiency; the introduction of the flaky composite carrier not only endows functional characteristics, but also can be used as a rigid reinforcement phase, so that the wear resistance and the extrusion resistance of the cable are improved, and the loss of the cable in the dragging and construction processes is reduced.

The application relates to the field of ceramic materials, and particularly discloses high-thermal-conductivity alumina ceramics and a preparation process thereof. The high-thermal-conductivity alumina ceramics are prepared from 50-70 parts of alumina powder, 40-50 parts of alumina fiber, 8-15 parts of a sintering aid, 0.7-1.5 parts of a dispersant and 0.2-0.3 parts of a binder, wherein the sintering aid is beryllium-zirconium composite fiber. The high-thermal-conductivity alumina ceramics have excellent thermal conductivity and mechanical properties, and have important application prospects in the field of heat dissipation of high-performance electronic devices. In addition, the preparation process can reduce the sintering temperature of the alumina ceramics, form a more uniform and refined grain system in the alumina ceramics, and significantly improve the thermal conductivity of the alumina ceramics.

The invention belongs to the technical field of ceramic preparation, and particularly relates to a method for preparing a high-performance ceramic rod by isostatic pressing, which comprises the following steps of: performing isostatic pressing treatment on polyvinyl alcohol serving as an adhesive, aluminum isopropoxide serving as a filling agent and raw materials to form a primary green body; and performing surface spraying on the basis of permeation, hydrolysis and sintering of the primary green body to obtain a to-be-sintered green body, and performing sintering and surface polishing to obtain the ceramic rod. The defect that a green body is damaged due to existing isostatic pressing treatment is overcome, the hard damage of an isostatic pressing mold is effectively reduced by combining the adhesiveness of polyvinyl alcohol and a flexible silica gel material, meanwhile, the performance of a secondary isostatic pressing green body is improved by means of sintering curing pretreatment, and the service life of the secondary isostatic pressing mold is prolonged. Therefore, the overall performance and the yield of the ceramic rod are ensured.

The application provides a high-thermal-conductivity diamond / copper composite material and an SPS sintering process thereof, raw material pretreatment: selecting three kinds of monocrystalline diamond particles with different particle sizes, mixing the titanium-plated diamond obtained after vacuum titanium plating treatment; solid dry powder mixing: uniformly mixing a solid additive and graphene modified copper powder to prepare a copper-based composite dry powder; nitrogen intermittent airflow suspension dispersion: adding the titanium-plated diamond into a sealed covering tank to make the titanium-plated diamond suspended and dispersed in the sealed covering tank; atomization covering makes the copper-based composite dry powder uniformly covered on the surface of the titanium-plated diamond to obtain composite particles; vacuum low-temperature degreasing to obtain the composite particles after degreasing, and SPS sintering demolding to obtain the high-thermal-conductivity diamond / copper composite material. The coating is uniform and dense, has no exposure and no agglomeration, and significantly reduces porosity and interface thermal resistance; the proportioning is accurate, the degreasing is thorough, and there is no residue; the generation of brittle phases is inhibited, and the interface combination is excellent; the thermal conductivity is stable and greater than 700 W / (m*K), and the density is greater than or equal to 99%.

The present application relates to the field of composite ceramics, and aims to provide a new B4C-cBN composite ceramic with good mechanical properties and thermal conductivity, and a preparation method thereof, which comprises the following steps: S100, mixing boron carbide 5-9 parts, cubic boron nitride 1-5 parts and sintering additives to obtain a mixture; S200, obtaining the B4C-cBN composite ceramic through a sintering process; the sintering temperature is 1400-1550 DEG C; the sintering pressure is 4.9-5.5 GPa; and the sintering time is 1-3 h. The reason why aluminum and cobalt are selected as sintering additives is that the melting point of aluminum is low, and a liquid phase formed in the sintering process can effectively fill the pores through capillary action, thereby promoting the sintering process. Aluminum reacts with cubic boron nitride to form aluminum nitride, which can inhibit the conversion of cubic boron nitride into hexagonal boron nitride. Cobalt has oxygen affinity and can play a purifying role of "deoxidation and degassing", thereby reducing pores, improving density and improving the sintering performance of the composite ceramic. The optimal raw material ratio and sintering parameters are determined, so that the mechanical properties and thermal conductivity of the composite ceramic are both excellent.

The invention relates to an enzyme-loaded porous gel capable of being quickly reconstructed, a preparation method and a flow microreactor, amphiphilic nanoparticles are used as a stabilizer, bubbles are introduced into a polymer solution and polymerization crosslinking is induced to form a uniform porous gel structure with an adjustable pore diameter, the amphiphilic nanoparticles can be adsorbed on a gas-liquid interface to stabilize the bubbles, and the porous gel structure can be quickly reconstructed. Enzyme molecules can be loaded on the surface to form a porous reaction medium with catalytic activity. The obtained porous gel has good mechanical strength, controllable aperture and porosity, and can realize rapid reconstruction of a porous structure, so that the application scene of a microreactor is widened, and the effective service cycle of enzyme is remarkably prolonged when the microreactor is blocked.