97 results about "Copper matrix composites" patented technology

The invention discloses a regulation and control method and a preparation method of in-situ ceramic particles of a copper-based composite material. The method comprises the following steps: weighing according to a reaction equation and a reaction molar ratio; the molar ratio coefficient is changed, trace alloy is added, and the size and morphology of in-situ particles are regulated and controlled; the copper-based pre-dispersed in-situ ceramic intermediate alloy reinforcer is prepared through powder mixing, cold pressing and sintering; crushing the reinforcer, remelting, stirring and casting; and after the cast alloy is subjected to heat treatment, the high-performance in-situ particle reinforced copper-based composite material is prepared. According to the obtained in-situ ceramic intermediate alloy reinforcer, pre-dispersion of ceramic particles in a copper matrix can be achieved, and good combination of the particles and the matrix is achieved by adding the copper-based pre-dispersion in-situ ceramic intermediate alloy reinforcer into a molten matrix alloy; interface pores caused by sharp corners, surface pollution and the like of the heterogeneous particles in an external addition method are avoided, and the strengthening effect of the heterogeneous particles is weakened.

The invention discloses a method for detecting pesticide based on a colorimetric sensing array of a copper-based MOF composite material, and relates to the technical field of pesticide detection.The method comprises the steps that a Co, Zn and Cu-MOF (VB2) composite nano-enzyme material with peroxidase-like activity and laccase-like activity is prepared; before and after a pesticide analyte to be detected is added, the peroxidase-like activity and laccase-like activity of the Co, Zn and Cu-MOF (VB2) composite nano-enzyme material catalyze different substrates in a neutral environment, so that catalytic products have different colorimetric responses to detect the pesticide analyte to be detected. The method can be used for simultaneously distinguishing and detecting five pesticides including carbendazim, pendimethalin, thiophanate-methyl, triadimefon and acetamiprid, and has the advantages of simplicity and convenience in operation and high detection speed.

The invention discloses a high-strength and high-conductivity nickel-loaded reduced graphene oxide reinforced copper-based composite material and a preparation method thereof, and belongs to the technical field of metal-based composite materials. The method comprises the following steps: firstly, preparing nickel-loaded reduced graphene oxide powder, then atomizing the nickel-loaded reduced graphene oxide powder, adding the atomized nickel-loaded reduced graphene oxide powder into a copper melt, and applying a synergistic effect of an alternating magnetic field and a direct-current electric field to realize enhanced phase directional alignment and interface strengthening; and finally, through homogenizing annealing, circular machining of'multi-pass cold drawing deformation and intermediate annealing ', rotary swaging and low-temperature aging treatment, the composite material which is uniform in structure and tight in interface bonding is obtained. The material has high strength and high conductivity, the tensile strength of the material is not lower than 700 MPa, the conductivity of the material is not lower than 80% IACS, and the material is suitable for high-requirement electrical materials and electronic interconnection and aerospace conductor components.

The invention discloses a method for evaluating and strengthening interface characteristics of a copper-based composite material, and relates to the technical field of copper-based composite materials. A soil solution and carbon quantum dots are prepared, and the carbon quantum dots are added into the soil solution; the method comprises the following steps: simulating a corrosion process of copper-based composite materials with different aluminum contents in soil solutions with different carbon quantum dot contents, and carrying out polarization curve and electrochemical impedance spectroscopy analysis on the corroded copper-based composite materials by adopting an electrochemical workstation to obtain charge transfer resistance and impedance modulus values of the copper alloy composite materials; meanwhile, SEM, EDS and three-dimensional surface contour analysis are combined, and the surface morphology and roughness of the copper-based composite material are obtained; according to the method, the electrochemical method and the corrosion surface characterization method are combined, the change of the surface and interface characteristics of the copper-based composite material corresponding to different matching materials can be rapidly evaluated, so that the purpose of protecting the alloy material is achieved, and aluminum and carbon quantum dots are found to be capable of synergistically promoting the protection of the copper-based composite material.

The invention relates to the field of friction materials, in particular to a preparation method of a high-temperature and high-strength copper alloy-based composite material for an alloy-reinforced high-iron brake pad. The high-temperature and high-strength copper alloy-based composite material for the high-iron brake lining is prepared by using a matrix alloy strengthening method, a high-temperature and high-strength Cu-Ni-Al alloy is strengthened by using an alloying element Si, and the Cu-Ni-Al-Si alloy is used as a matrix material; feCu30 is used as a matrix strengthening component; crFe and SiO2 are used as friction increasing components; graphite (flake) and MoS2 are used as anti-attrition components. The Cu-Ni-Al-Si alloy powder is prepared from the following raw materials in percentage by mass: 40 to 60 percent by weight of Cu-Ni-Al-Si alloy powder, 20 to 35 percent by weight of FeCu30 powder, 5 to 15 percent by weight of CrFe powder, 5 to 20 percent by weight of graphite powder, 0.5 to 5 percent by weight of MoS2 powder and 0.5 to 5 percent by weight of SiO2 powder. After the raw material powder is uniformly mixed, cold press molding is carried out, and hot pressed sintering is carried out under a vacuum condition. Compared with a commercial pure copper-based composite material and a Cu-Ni-Al-based composite material, the hardness and the strength of the high-temperature and high-strength Cu-Ni-Al-Si-based composite material are improved, and the friction coefficient stability and the wear resistance are remarkably improved.

The invention discloses a graphene quantum dot reinforced copper-based composite material and a preparation method thereof. The preparation method of the graphene quantum dot reinforced copper-based composite material comprises the following steps: (1) taking itaconic acid and ethidene diamine as precursors, synthesizing graphene quantum dots GQDs through a hydrothermal method, and centrifuging, dialyzing and freeze-drying to obtain GQDs powder; (2) preparing the graphene quantum dot GQDs powder into GQDs / Cu2O composite powder through a molecular-level blending method; and (3) the GQDs / Cu2O composite powder is annealed and reduced into GQDs / Cu composite powder in the Ar / H atmosphere, then vacuum ball milling and spark plasma sintering treatment are conducted, and the block GQDs / Cu composite material is prepared. The method disclosed by the invention is green, safe and low in cost, and the prepared composite material is uniform in GQDs dispersion and strong in interface bonding, has excellent conductivity and corrosion resistance, and is suitable for the fields of electronics, electrics, aerospace and the like.

The invention provides a copper-based composite material performance prediction method based on a space-time attention mechanism, and the method comprises the steps: obtaining a microstructure diagram and stress-strain data through molecular dynamics simulation, extracting topological features through a diagram attention network, and dynamically adjusting the parameters of a time sequence convolution network; a cross-space-time attention module is constructed, and bidirectional feedback fusion of space feature screening and time sequence feature optimization is realized; and finally, carrying out dimensionality reduction and nonlinear transformation on the fused features through a full-connection layer, and outputting performance prediction values such as yield strength and Young modulus. According to the method, the precision and reliability of performance prediction of the copper-based composite material can be improved, and efficient and accurate theoretical support is provided for material design and performance optimization.

The utility model provides a kind of fine-grained high-temperature molybdenum copper-based composite material heat treatment temperature control furnace, it is related to temperature control furnace technical field, including furnace body and furnace door, the outside surface of furnace body is fixedly installed air inlet pipe and exhaust pipe, solenoid valve one and solenoid valve two are set on air inlet pipe and air outlet pipe;In the utility model, by fixedly installing filter box at the end of exhaust pipe away from furnace body, filter box cooperates with bearing filter frame and activated carbon layer to filter and handle waste gas generated during heat treatment process, which contains particulate matter, volatile organic compounds and possibly harmful metal compounds and other components, avoid waste gas directly discharging to pollute surrounding environment, also prevent waste gas from affecting air quality in workshop, protect the health of operating personnel and the normal operation of other equipment, help to maintain good production environment, and also convenient to disassemble bearing filter frame by screw rod, clamping block and fixed block and other structures, convenient to replace activated carbon layer in later period.

The invention discloses a preparation method of a graphene copper-based composite material, and belongs to the technical field of copper-based composite materials. The method comprises the following steps: (1) carrying out surface pretreatment on a copper foil; (2) dropwise adding the graphene dispersion liquid on the surface of the copper foil, and drying the copper foil after the graphene dispersion liquid is freely diffused until the graphene dispersion liquid covers the surface of the copper foil; (3) stacking the copper foils in a manner that a graphene layer is arranged between two layers of copper foils, and then sequentially carrying out cold pressing and hot pressing to obtain a hot-pressed composite material; (4) annealing the hot-pressed composite material to obtain an annealed composite material; (5) carrying out cold rolling on the annealed composite material to obtain a rolled composite material; and (6) the rolled composite material is subjected to annealing treatment, and the graphene copper-based composite material is obtained. On the basis of simplifying the preparation process and reducing the preparation demand conditions, the graphene is promoted to effectively and fully exert the strengthening effect, and the comprehensive performance of the composite material in multiple aspects is improved.

The invention relates to the field of copper-based composite materials, and discloses a high-temperature-resistant copper / graphene composite wire and a preparation method and application thereof. The preparation method provided by the invention comprises the following steps: S1, by taking a dispersion strengthened copper wire as a processing object, growing graphene on the surface of the dispersion strengthened copper wire to prepare a composite unit; s2, bundling and assembling a plurality of composite units prepared in the step S1 to obtain an assembly, then loading the assembly into a dispersion strengthened copper pipe, carrying out vacuum sealing on two ends, and then carrying out plastic deformation treatment and intermediate annealing treatment to prepare a multi-core composite wire; s3, taking the multi-core composite wire prepared in S2 as a new processing object, and repeatedly executing S1 and S2 to obtain a composite wire; and S4, carrying out annealing treatment on the composite wire rod finally obtained in the step S3 to obtain the high-temperature-resistant copper / graphene composite wire. According to the copper / graphene composite wire prepared through the preparation method, collaborative optimization of high temperature resistance, high strength and high conductivity is achieved.

The invention relates to the technical field of copper alloys, in particular to a high-strength and high-conductivity C19400 copper-based composite material and a preparation method thereof. The method mainly comprises the steps that copper powder, iron powder, copper-phosphorus alloy, modified nano TiC and copper-cerium alloy powder are mixed and then subjected to high-energy ball milling, and the high-strength and high-conductivity C19400 copper-based composite material is obtained through vacuum drying, compression molding, pressure sintering and double-stage aging treatment, and the modified nano TiC is subjected to rare earth Ce precursor coating and weak oxidation heat treatment, so that the high-strength and high-conductivity C19400 copper-based composite material is obtained. And a cerium dioxide film layer is formed on the surface in situ, so that the dispersibility of nano TiC and the interface bonding between the nano TiC and a copper matrix can be improved. Through matching of the raw materials and the preparation steps, the effects of precipitation strengthening, dispersion strengthening and interface strengthening can be effectively coordinated, and the strength, the conductivity and the structure stability of the material are improved.

The invention discloses a high-strength, high-conductivity and high-wear-resistance nickel-plated short carbon fiber reinforced copper-based composite material and a preparation method thereof, and belongs to the technical field of metal-based composite materials. The preparation method comprises the following steps: carrying out surface roughening, sensitization and activation pretreatment on short carbon fibers, and then carrying out chemical nickel plating to form a nickel layer; mixing the nickel-plated short carbon fiber with oxygen-free copper zirconium CuZr0. 1 alloy powder, and carrying out cold press molding; and the copper-based composite material is subjected to rapid vacuum hot pressing sintering for 30-60 min at the temperature of 800-900 DEG C and the axial pressure of 30-50 MPa, the obtained copper-based composite material has high strength, high conductivity (80% IACS or above) and excellent wear resistance (the wear rate is smaller than or equal to 1.1 * 10 <-5 > mm < 3 > / m), and the technical problems that a traditional carbon fiber / copper-based composite material is poor in interface bonding and low in conductivity are solved. The method is suitable for high-performance conductive wear-resistant parts in the fields of aerospace, traffic rails and the like.

The invention discloses a material for an electromagnetic rail gun guide rail and a preparation method and application thereof, and belongs to the technical field of copper-based composite materials. The invention relates to a material for a guide rail of an electromagnetic rail gun. The material comprises a 5-20nm nano precipitated phase dispersed and distributed in a copper matrix; the MXene lamellas are continuously distributed on the grain boundary, and the nanometer MAX phase is distributed in the grain; and the nano precipitated phase, the MXene sheet layer and the nano MAX phase form a continuous reinforced network. The Cu-Ti-Be-Co alloy serves as a matrix, and unification of high strength and high conductivity is achieved through the synergistic effect of nanometer precipitated phase strengthening and MAX and MXene strengthening. The yield strength of the composite material reaches more than 700MPa and the conductivity is greater than or equal to 80% IACS (International Annealed Copper Standard) by regulating and controlling the interface combination of MAX and MXene with a matrix and the size and distribution of a nano precipitated phase, and the composite material is suitable for the fields of high-load electromagnetic guide rails, electromagnetic rail guns and the like.

The invention discloses a method for preparing a nano copper-based composite material through two-step sintering, and belongs to the technical field of copper-based composite material preparation, Cu-Ti powder and B powder are used as original powder, precursor powder is obtained through high-energy ball milling, and a TiB2 / Cu composite material is prepared through the two-step sintering method. According to the method for preparing the nano-copper-based composite material through the two-step sintering, the nano-particles are formed through low-temperature sintering, sintering densification is achieved under the condition that the nano-particles are sintered at high temperature to inhibit grain coarsening, and the key technical problem that base body nano-grains grow up in the traditional high-temperature sintering process is solved; the mechanical property of the copper-based composite material is remarkably improved through the obtained nanocrystalline copper matrix and the nanometer dispersion particles together.

The application relates to the application field of metal powder metallurgy technology and discloses a copper-based composite material metal block capable of resisting impact energy and a preparation process and application thereof. The copper-based composite material metal block is used in impact and collision process tests, and impact energy absorption, reduction or elimination is realized by self-pulverization and disintegration. Raw materials of the copper-based composite material capable of resisting impact energy include, in percentage by mass, 1-95% of atomized copper powder, 0-95% of electrolytic copper powder, 1-15% of tin powder, 1-2% of molybdenum disulfide, 0-3% of graphite, 0-7% of phenolic resin, 0-1% of lithium stearate and 0-1% of magnesium stearate. The above raw materials are mixed, secondarily pressed, sintered and electroplated to form the copper-based composite material. When encountering an impacted metal barrier section, the metal block can absorb the counter-impact energy and disintegrate by itself, so that the running speed instantaneously drops to zero, the metal fragment splashing phenomenon does not occur, and the copper-based composite material does not contain lead metal, so that the whole impact and collision process is harmless to the surrounding environment.

The invention belongs to the technical field of copper-based composite materials, and particularly relates to a copper-based composite material with a reinforced phase of a three-dimensional continuous net structure and a preparation method and application of the copper-based composite material. According to the preparation method of the copper-based composite material, raw material components such as sponge titanium, silicon blocks and pure copper particles are weighed firstly, then part of the pure copper particles, all the sponge titanium and the silicon blocks are prepared into a mother alloy thin strip with a dispersed Ti5Si3 reinforced phase, and the mother alloy thin strip is crushed into particles; next, a copper-based composite melt obtained after smelting of the remaining pure copper particles and the mother alloy particles is poured into a directional gradient cooling device to be cooled, a three-dimensional net-shaped Ti5Si3 reinforced phase structure is formed in the copper-based composite material by regulating and controlling the solidification condition of the copper-based composite melt and controlling the dosage of raw material components, distribution of the Ti5Si3 reinforced phase is controlled, and the strength of the copper-based composite material is improved. The strength, the hardness and the conductivity of the copper-based composite material are improved, meanwhile, the plasticity is also considered, and the copper-based composite material is excellent in comprehensive performance.

The invention discloses a preparation method of an in-situ nitrogen-doped graphene reinforced copper-based composite material based on external pyrolysis, and relates to the technical field of metal-based composite material preparation. The method specifically comprises the following steps that copper powder is placed in a heating device, and a solid nitrogen-containing carbon source is placed in an external pyrolysis device; after the system is vacuumized and cleaned, inert gas and hydrogen are introduced, and the heating device is heated to a specific temperature and is subjected to heat preservation. An external pyrolysis device is started, the temperature is increased to the pyrolysis temperature, a nitrogen-carbon-containing small molecule precursor is generated and conveyed into a heating device, in-situ growth is conducted on the surface of the copper powder, and high-dispersion composite powder is prepared; and sintering the powder to obtain the densified high-dispersion nitrogen-doped graphene / copper composite block material. According to the method, the in-situ uniform growth of the nitrogen-doped graphene on the surface of the copper powder is realized through a solid nitrogen-containing carbon source external pyrolysis technology in combination with a synergistic mechanism of copper powder regulation and control, precursor directional transportation and in-situ doping growth, and a new way is provided for controllable synthesis of the copper-based composite material.

The invention relates to the technical field of electrical contact materials, in particular to a copper-based electrical contact composite material for enhancing electric conductivity and heat conductivity through cobalt-mediated interface engineering and a preparation method of the copper-based electrical contact composite material. (2) adding the deoiled copper powder and a conductive polymer into an initiator solution or a buffer solution; (3) filtering and collecting the polymer and the cobalt-coated copper powder; (4) drying the collected composite material precursor; and (5) carrying out hot pressing or pressing sintering to obtain the modified copper-based electrical contact material. A conductive polymer and cobalt ions are complexed and assembled on the surface of copper powder, then high-temperature sintering is performed to obtain the copper-based composite material, and cobalt catalyzes formation of high-quality graphene; the heteroatom-doped graphene is prepared through high-temperature carbonization of the conductive polymer, and the carrier concentration and the interface energy band structure of the material are optimized; and the cobalt bridging copper-carbon interface reduces electron and phonon scattering and improves the electrical conductivity and thermal conductivity of the composite material.

This invention discloses a multi-layered, coaxially aligned diamond particle-reinforced copper-based composite material and its preparation method. The method includes forming a uniform array of V-shaped through-holes on a copper foil using laser processing, mechanical punching, or etching to obtain a copper foil template; embedding diamond particles into the V-shaped through-holes on the copper foil template skeleton; stacking multiple layers of the copper foil template skeleton through interlayer alignment and filling the interlayer gaps with copper powder to form a diamond / copper skeleton preform; and densifying the preform to finally obtain a composite material with preferential thermal conductivity channels in the thickness direction. This invention effectively solves the problems of low out-of-plane thermal conductivity, easy particle agglomeration, and poor structural integrity in copper and diamond composite materials. Furthermore, it allows for array densification or gradient aperture design to optimize heat flow paths according to application requirements.

This invention belongs to the field of copper-based composite materials, and particularly relates to a copper-graphene composite material, its preparation method, and preparation equipment. The copper-graphene composite material preparation equipment provided by this invention includes: a furnace body; a lifting device disposed within the furnace body, the lifting device being equipped with a fixing fixture for vertically fixing a copper rod; a heat-resistant sleeve for placing the copper rod, the lower opening of the heat-resistant sleeve being provided with a fastening clamp; an electromagnetic induction coil disposed within the furnace body, the electromagnetic induction coil being able to electromagnetically induction heat the copper rod in the heat-resistant sleeve above the fastening clamp during the up-and-down movement of the lifting device; and a cooling pool disposed within the furnace body and located below the electromagnetic induction coil, the cooling pool being able to cool the copper rod passing downward through the induction coil during the up-and-down movement of the lifting device. The equipment provided by this invention can be used to prepare macroscopic copper-graphene composite materials, and the preparation process is short, efficient, and economical.

The present invention discloses a soluble copper-based composite material, which is a sheet material with a thickness of 4 to 10 μm and is composed of 60 to 90 wt% of copper powder, 8 to 38 wt% of a binder and 2 to 5 wt% of a conductive agent; the binder is sodium alginate, the copper powder is composed of two different copper powders with particle sizes of 0.2 μm and 1.1 μm respectively in a weight ratio of 1 to 5:1, and the conductive agent is one or more of carbon nanotubes, carbon black and graphene; the preparation method and application of the composite material are also disclosed; the composite material of the present invention is intended to replace traditional copper foil, and its water-soluble property enables complete self-destruction of electrical devices in an aqueous environment, greatly improving the safety of the equipment. The composite material of the present invention has excellent bonding performance with electrode materials and a large contact area, thereby effectively improving the effective capacity of lithium batteries.

The application discloses a high-speed imaging system and method suitable for an extreme high-temperature and strong radiation environment, the system adopts ZrO2-Y2O3 thermal barrier ceramic, graphene reinforced copper-based composite material and molybdenum alloy packaging to form a multistage heat flow regulation system; meanwhile, an anti-radiation CMOS image sensor based on an SOI process is introduced, and an interference type optical filter structure is supplemented to shield thermal radiation interference, so that the system can stably work at a high temperature of 2000 DEG C and a radiation environment of >=10 6 Rad(Si). The application discloses a high-speed imaging system and method suitable for an extreme high-temperature and strong radiation environment, which is suitable for image acquisition tasks under extreme working conditions such as aerospace, nuclear energy industry and deep space exploration, and has significant technical advantages and industrial promotion prospects.

The invention belongs to the technical field of metal material preparation, and particularly relates to a laser cladding method for preparing a copper-based composite material coating on a copper alloy substrate. Comprising the following steps that chromium diboride and graphite serve as strengthening phases and are mixed with Cu powder, and Cu-based composite powder is obtained in a powder mixing and ball milling mode in sequence; the Cu-based composite powder comprises the following components in percentage by volume: 0vol.%-1vol.% of graphite, 1vol.%-5vol.% of chromium diboride and the balance of Cu, and the total amount is 100%; and the Cu-based composite powder is cladded on the surface of the copper alloy in a laser cladding mode, and the copper-based composite material coating is obtained. According to the method, the copper-coated graphite powder, the chromium diboride powder and the Cu powder serve as raw materials, the copper-based composite material coating is successfully prepared on the copper alloy substrate through the laser cladding technology, the performance of the surface of the copper alloy can be improved, and a more economical scheme can be provided for repairing a damaged mobile electric contact part.

The invention aims to solve the problem that the copper SLM printing machinability is poor, so that the performance of the copper SLM is seriously influenced. The preparation method comprises the following steps that S1, material preparation is conducted, specifically, high-purity copper powder and high-purity lanthanum hexaboride powder are mixed, and evenly-mixed powder is obtained; s2, the mixed powder is subjected to additive manufacturing forming through the selective laser melting technology; and S3, linear cutting is conducted, specifically, linear cutting is conducted on the printed lanthanum hexaboride / copper composite material workpiece in a linear cutting mode, and the lanthanum hexaboride / copper composite material is obtained. The preparation complexity and cost of the lanthanum hexaboride / copper composite material are greatly reduced, the prepared lanthanum hexaboride / copper composite material is good in compounding effect, high in strength and toughness and high in conductivity, and new possibility is developed for wide industrial application.

The invention discloses a preparation method of a high-densification and high-thermal-conductivity diamond copper-based composite material. The preparation method comprises the following steps: weighing the following components in percentage by mass: 15-49 wt% of diamond single crystal particle powder; 1 to 5 wt.% of silver powder; the preparation method comprises the following steps: mixing the components, putting the uniformly mixed diamond single crystal particle powder, copper powder and silver powder into a vacuum hot pressing sintering furnace, sintering at 962-1085 DEG C to obtain a composite material, and uniformly filling gaps in the composite material with semisolid copper and liquid silver in the sintering process; by adding a small amount of silver powder, the diamond and the copper matrix can be better fused, and improvement of the density of the composite material is facilitated; vacuum sintering is adopted, on one hand, the preparation speed of the composite material is increased, and on the other hand, the silver powder is melted through heating in an extremely short time, gaps are fully filled, and the density of the composite material is improved; as the thermal conductivity of silver is better than that of pure copper, the thermal conductivity of the composite material is further improved after pores are fully filled.

The present invention relates to a copper-based composite material based on carbon nanotubes, its preparation method, and application, and belongs to the technical field of copper-based composite materials. The preparation method of the present invention comprises the following steps: stirring and mixing an aqueous solution of copper powder and a dispersion of carbon nanotubes, allowing the mixture to stand, separating the layers, stirring again, allowing the mixture to stand, separating the solid and the liquid, and then mixing the mixture in a planetary ball mill to obtain a CNT / Cu composite powder. The CNT / Cu composite powder is then subjected to cold pressing and hot pressing sintering to obtain the copper-based composite material based on carbon nanotubes. The present invention effectively improves the problem of poor wettability at the interface between carbon nanotubes and copper, and has broad application prospects in the field of friction materials requiring high friction stability and high wear resistance.

The utility model discloses a high heat conduction composite refractory brick assembly for hydrogen production reformer lining relates to refractory material technical field. The utility model discloses a refractory brick, the high heat conduction mechanism is provided in the refractory brick, the refractory brick both sides all are provided with the mounting mechanism, the high heat conduction mechanism includes the hollow slot of setting in the refractory brick inside, the support plate of fixed connection in the hollow slot inside and the high heat conduction pipe of fixed connection in the hollow slot inside, the mounting mechanism includes the spacing rod of setting in the refractory brick one side. The utility model discloses through spiral high heat conduction pipe design, significantly prolongs the heat flow path and increases the contact area with the refractory brick base body, cooperates the high heat conduction characteristic of copper base composite material, realizes the heat rapid, even transmission to the reaction tube area, and this structure solves the problem of low efficiency of traditional linear heat conduction groove thoroughly, effectively eliminates the circumferential temperature difference of furnace tube, guarantees the catalytic reaction uniformity, and greatly improves the methane conversion efficiency.

The application provides an AlCrCuFeNi high-entropy alloy particle reinforced copper-based composite material, and a preparation method of the material. 15.38 Cr 15.38 Cu 15.38 Fe 15.38 Ni 38.48 ; the high-entropy alloy particles and copper powder are ball-milled to obtain a mixture; wherein the mass percentage of the high-entropy alloy particles is 10-50 wt.%; and the mixture is subjected to spark plasma sintering to obtain the AlCrCuFeNi high-entropy alloy particle reinforced copper-based composite material, and the sintering temperature is 573K-733K. The technical scheme of the application can improve the strength of the composite material while maintaining high electrical conductivity, and the finally obtained composite material exhibits excellent mechanical and electrical properties, and has a wide application prospect.

This invention discloses a copper-based MOF photocatalyst, its preparation method, and its application, belonging to the field of catalyst preparation. This invention pertains to the synthesis of copper-based MOF compounds constructed using defect engineering strategies and their application in photocatalysis to directly convert carbon dioxide into the multi-carbon product acetone. Specifically, it relates to the preparation and application of copper-based MOF composite materials with specific triatomic sites (NH2-Cu-NH2) for the direct conversion of carbon dioxide into the high-value C3 product acetone under visible light irradiation at room temperature.

The invention relates to the technical field of crystalline porous materials, in particular to a fluorine ion doped copper-based MOF composite material and a preparation method and application thereof.The preparation method comprises the steps that 2, 3, 4-trifluorophenol, formaldehyde and CM MOF are subjected to a gas-phase polymerization reaction in a gas-phase polymerization reactor at the temperature of 70-100 DEG C under normal pressure, and F3 / CM MOF is obtained after the reaction is conducted for 10-20 h. According to the fluorine ion doped copper-based MOF composite material, the unique cubic structure mode and the pore structure of CM MOF are utilized, Cu sites and fluorine ions are organically combined, an F3 / CM MOF material is prepared, protection and fluorination effects on the open metal Cu sites can be achieved through introduction of F ions, the structural stability of the CM MOF is promoted, and adsorption of ethylene oxide gas is achieved.