71 results about "Materials science and technology" patented technology

The invention belongs to the crossing field of artificial intelligence and material informatics, discloses a multi-layer material knowledge graph construction method and system based on a large model, and solves the problems of low utilization rate of multi-modal information, flat knowledge representation, uncontrollable quality and insufficient entity alignment precision in the prior art. The method comprises the following steps: analyzing material science and technology literatures, extracting multi-modal information of texts, tables and images, and preprocessing the multi-modal information into structured data; constructing a three-layer semantic framework of a concept term layer, a material entity layer and a material data layer; extracting knowledge by a large model layer by layer to generate a triple, and performing multi-dimensional quality evaluation and dynamic threshold filtering; entity fusion is realized by adopting hybrid alignment of semantic embedding and literal similarity and large model discrimination, and an atlas is maintained by combining incremental updating and version management. According to the method, knowledge integrity and accuracy are improved, entity heterogeneous scenes in the material field are adapted, whole-process automation is achieved, and high-quality knowledge support is provided for material research and development and data sharing.

The invention belongs to the technical field of material science, and relates to a generation method of a material formula, a target material, an automobile structural part, a vehicle, a device, a medium and electronic equipment. The method comprises the following steps: acquiring target performance data of a target material to be prepared; and inputting the target performance data into a pre-trained material large model, so that the material large model outputs formula data for preparing the target material and corresponding process data. The formula data and the process data of the preparation method are reversely deduced according to the target performance data required by the target material by utilizing the large material model, the large model is introduced into the field of material science, and the generation method of the reverse material formula realizing'target performance driving 'is provided without relying on a large number of manual experiment trials and errors; and the advantages of strong generalization ability and reasoning ability of the large material model are exerted, so that the research and development efficiency and success rate of new materials are improved, and the application scenarios of the large material model are enriched.

The invention relates to the technical field of computational material science, in particular to a high-entropy ceramic phase change strengthened silver-based electric contact material component screening method, which comprises the following steps of: firstly, based on first principle calculation and Monte Carlo molecular dynamics simulation, combining experimental data correction, and screening out a (MgCoNiCuZn) O component proportion of which the phase change temperature is close to a silver melting point and the single-phase enthalpy value is high; secondly, dynamically simulating wetting behaviors of liquid silver and O with different component proportions (MgCoNiCuZn) through molecular dynamics, and selecting a component proportion with the best wettability with the liquid silver in combination with phase boundary energy calculation and wetting angle experimental verification; and finally, preparing a sample based on spark plasma sintering, actually measuring a wetting angle by using a seat drop method, and feeding back and correcting simulation parameters to form closed-loop optimization. The method is suitable for wettability collaborative optimization screening of a rare earth element doped high-entropy oxide system and liquid metal, proper components can be efficiently and accurately screened out, and the performance of the silver-based electric contact material is improved.

The invention discloses a recycled concrete permeability detection system and method, and relates to the technical field of material science, and the system comprises an electric field auxiliary module which applies a preset voltage gradient through an electric field auxiliary device, obtains initial ion concentration distribution data and a current change signal from a recycled concrete sample, and obtains a reference parameter of a permeation process; the modeling and simulation module is used for constructing a pore structure model by adopting a finite element simulation method according to the reference parameters, fusing an ion migration rate and a non-uniform distribution characteristic, and determining a dynamic regulation and control scheme under the action of an electric field; according to the recycled concrete permeability detection system and method, dynamic regulation and control and real-time monitoring of ion permeability behaviors are achieved, the barrier property evaluation precision of recycled concrete is remarkably improved, and efficient technical support is provided for durability optimization of engineering materials.

The invention relates to the technical field of material science, in particular to a porous liquid material based on an MIL-100 (Fe) base, preparation of the porous liquid material and application of the porous liquid material in extraction coupling oxidative desulfurization. The porous liquid material based on the MIL-100 (Fe) base is successfully prepared by compounding the MIL-100 (Fe) metal organic framework and the ionic liquid. The material not only retains the high specific surface area and excellent pore structure characteristics of MOF, but also shows liquid characteristics, the fluidity and adaptability of the material in the extraction process are remarkably improved, and the material is especially suitable for the continuous multi-stage extraction process in the industry; and the material can realize high-efficiency sulfide molecular adsorption and oxidative desulfurization reaction under wider operation conditions. Compared with a traditional solid MOF material, the material has remarkable advantages in the desulfurization process, including higher desulfurization rate (more than 90%), higher reaction speed and excellent cycle stability.

The invention discloses a training method, device and equipment of a hydrogen terminal diamond structure-spectrum-effect relationship prediction model and a readable storage medium, and relates to the technical field of material science. Comprising the following steps: firstly, obtaining structure parameters of the hydrogen terminal diamond, and carrying out first-principle high-throughput calculation on the structure parameters to obtain property parameters of the hydrogen terminal diamond; constructing a relevance data set between the structure parameters and the property parameters; then carrying out infrared spectrum calculation on the structure parameters of the hydrogen terminal diamond to obtain spectrum data of the hydrogen terminal diamond; constructing a mapping data set between the structural parameters and the spectral data; and finally, based on the relevance data set and the mapping data set, training a hydrogen terminal diamond structure-spectrum-effect relationship prediction model. According to the scheme, the high efficiency and accuracy of hydrogen terminal diamond structure-spectrum-effect relationship prediction are remarkably improved.

The invention discloses construction and application of a biosensor based on an efficient antifouling interface and dual signal amplification, and belongs to the technical fields of optical / electric analytical chemistry, biosensing and material science. According to the invention, the electrode interface is modified with polyaniline doped with polytannic acid as an antifouling film, so that non-specific adsorption of interfering biomolecules in a complex medium is resisted; euTb-MOF is prepared as an efficient luminous body, Tb < 3 + > can transfer energy of Tb < 3 + > and ligand to Eu < 3 + >, and effective signal self-enhancement is realized; according to the EuTb-MOF, the reduction of S2O8 < 2-> is promoted by utilizing the reversible conversion of valence states of Co < 2 + > / Co < 3 + > and Fe < 2 + > / Fe < 3 + > and the synergistic catalysis of Ag NPs, so that the electrochemical luminescence signal of the EuTb-MOF is further improved. Based on the above strategy, the constructed biosensor has high detection sensitivity and precision and long service life, the linear range is 10 fM to 100 nM, and the detection limit is as low as 3.62 fM.

This invention relates to the field of materials science and technology, specifically to an X-ray diffraction measurement system for silicon wafer oxide layers. The system includes a detector body for measuring dislocations in the silicon wafer oxide layer, a support stage fixed to the front of the detector body, and a support box for carrying the silicon wafer material. It also includes a transfer mechanism located on top of the support stage and a transmission component located on the left side of the top of the support stage for transporting the support box containing the silicon wafer material. This invention improves transmission stability by using magnetic attraction to limit the position of the support box carrying the silicon wafer material during transmission. It also facilitates the limiting of support boxes of different sizes, thereby facilitating the transmission of silicon wafer materials of different sizes and enabling the detection of silicon wafer materials of different specifications. Furthermore, the cooperation between the transmission component and the transfer mechanism facilitates the transmission of support boxes of different specifications, making it convenient for practical use.

The invention discloses a high-performance latent curing solvent-free adhesive for bonding an EPDM (Ethylene-Propylene-Diene Monomer) heat insulation layer and a carbon fiber composite material, and belongs to the technical field of advanced high polymer material science. Comprising the following components: epoxy-terminated modified hydroxyl-terminated rubber, epoxy resin, a curing agent and a vulcanizing agent, the epoxy-terminated modified hydroxyl-terminated polybutadiene rubber comprises the following components: isophorone diisocyanate (IPDI), hydroxyl-terminated polybutadiene rubber (HTPB), epoxy resin and a catalyst. Compared with adhesives widely used in the spaceflight industry in China at present, the high-performance latent-curing solvent-free adhesive has the characteristics of high adhesive strength and latent curing solvent-free property, the adhesive does not need to be prepared at present, the high-performance latent-curing solvent-free adhesive only needs to be coated on an EPDM heat insulation layer, is subjected to heating and pre-curing, and is covered with a release film to form a self-adhesive sheet, so that the self-adhesive sheet is formed; and during use, the release film covering the surface is torn off, the EPDM heat insulation layer is attached to the carbon fiber composite material, hot-pressing vulcanization is performed, and bonding is completed.

This utility model discloses an amorphous component placement device for a horizontal magnetic furnace, relating to the field of materials science and technology. The utility model includes a limiting frame, with a connecting plate slidably connected to the inner wall of the limiting frame. A placement mechanism is provided on the connecting plate, and a picking mechanism is provided on the limiting frame. The placement mechanism includes a sliding groove. By incorporating a clamping plate, and with a spring in a compressed state, the spring rebounds, pushing the sliding plate towards the placement box. Simultaneously, the sliding plate slides on a fixed rod, causing the clamping plate to move. The clamping plate then causes a slider to slide within the sliding groove. Through the clamping plate that can clamp the placement box, the placement box containing the amorphous components is fixed in position, ensuring the stability of the components within the furnace and guaranteeing the uniformity of the heating process, thereby improving the heating effect and component performance.

This invention belongs to the field of materials science and technology, and discloses a machine learning-based method and related apparatus for optimizing the mechanical properties of cyanate ester / quartz fiber. Using a trained neural network prediction model, it recommends the tensile modulus and tensile strength targets of cyanate ester corresponding to the tensile strength target of the cyanate ester / quartz fiber composite material. Using the trained machine learning model, it recommends the composition and process parameters of the cyanate ester corresponding to the tensile modulus and tensile strength targets. The recommended cyanate ester composition and process parameters are then screened to obtain the cyanate ester composition and process parameters corresponding to the tensile strength target of the cyanate ester / quartz fiber composite material. This invention can utilize limited production line data, reduce the number of experiments and costs, rapidly optimize cyanate ester performance, and thus obtain high-performance composite materials.

The invention discloses a manufacturing method for recrystallizing semiconductor material silicon carbide, belongs to the technical field of material science, and aims to solve the problems that a material'dead zone 'possibly occurs, the cost is high, the technology is complex and difficult, and the rejection rate is relatively high when silicon carbide crystals are manufactured by a silicon carbide differential high-temperature vapor deposition method. Comprising the following steps that 1, 4-5 kg of 24-mesh high-purity silicon carbide, 2-3 kg of 100-mesh high-purity silicon carbide and 1-2 kg of differential silicon carbide are selected; 2, the high-purity silicon carbide selected in the step 1 is mixed and put into an electric furnace, and 2-3 kg of 100-mesh monocrystalline silicon is laid at the bottom of the electric furnace; 3, the temperature is increased to 1100 DEG C and kept for 1 h, then the temperature is increased to 1600-2200 DEG C, and heat preservation is conducted for 24-48 h; and 4, blowing out the furnace and discharging. The method is low in cost, simple in technology and high in economic benefit.

The invention provides a novel composite material and a preparation method thereof, and relates to the technical field of material science. The novel composite material is prepared from the following raw materials in percentage: 43.2 to 43.6 percent of magnesium oxide, 14.6 to 14.8 percent of magnesium chloride, 0.02 to 0.1 percent of citric acid and 41.7 to 41.9 percent of water. Wherein the magnesium oxide, the magnesium chloride and the water jointly react to generate 7Mg (OH) 2. MgC l 2.8 H2O, the raw material composition further comprises fibers and a filler, the fibers are filled according to 15%-20% of the total amount of the magnesium oxide, the magnesium chloride, the citric acid and the fibers, and the filler is filled according to the amount smaller than 10% of the total amount of the magnesium oxide, the magnesium chloride, the citric acid and the fibers. According to the invention, a novel composite material with excellent performance is successfully developed by optimizing the raw material ratio and the preparation method, the composite material is formed by compounding a plurality of inorganic and organic raw materials, not only has excellent mechanical properties, wear resistance and corrosion resistance, but also is simple and efficient in preparation method, and has relatively high industrial application value.

The utility model belongs to the technical field of material science, and particularly relates to a low-temperature co-fired ceramic dielectric material forming performance testing device which comprises a workbench, a fixing plate is fixedly installed on the side face of one end of the workbench, a fixing support is fixedly installed on the side face of the fixing plate, and a supporting plate is fixedly installed on the side face of the fixing support. A motor is fixedly installed at the top of the supporting plate, the output end of the motor penetrates through the interior of the fixing support and is fixedly provided with a threaded rod, a nut is installed outside one end of the threaded rod in a threaded mode, a first moving block is fixedly installed outside the nut, and fixing rods are fixedly installed at the two ends of one side of the fixing support. The motor drives the threaded rod to rotate, the threaded rod drives the first moving block to move, the first moving block drives the second moving block, and the second moving block moves to drive the clamp to move, so that the effect of fixing the detected object is achieved, and the consistency and reliability of the test result of the detected object are effectively improved.

This invention relates to the field of materials science and technology, and discloses a method for optimizing the composition of a chemical nickel plating solution for ceramic substrates. The method includes: analyzing target ratio combinations of key variables to establish an initial nickel plating solution; plating a preset ceramic substrate using the initial nickel plating solution, and recording the current pH value during the initial nickel plating process; analyzing the pH adjustment parameters of the initial nickel plating solution, marking the comprehensive lifetime score of the initial nickel plating solution under the pH adjustment parameters to determine the failure point of the initial nickel plating solution; performing nickel plating on the ceramic substrate using the initial nickel plating solution to obtain a nickel-plated ceramic substrate; identifying the critical load for plating peeling off the nickel-plated ceramic substrate to determine the adhesion of the nickel-plated ceramic substrate; analyzing the conductivity and corrosion resistance of the nickel-plated ceramic substrate; outputting the composition optimization parameters of the initial nickel plating solution; and performing composition optimization of the nickel plating solution based on the composition optimization parameters. This invention can improve the optimization effect of the nickel plating solution composition.

The present invention relates to the field of materials science and technology, and specifically relates to a high-strength cemented carbide and its preparation method and application, which includes the following steps: S1: Weigh the raw materials of tungsten carbide, cobalt, tantalum carbide, niobium carbide, titanium carbide, yttrium oxide, nickel, and trace strengthening elements according to a preset weight to form a mixture A; S2: Place the mixture A in a wet ball milling device for ball milling treatment; S3: Perform drying treatment on the ball-milled slurry; S4: Perform plasma activation treatment on the dried powder; S5: Press the activated powder to form a dense green compact; S6: Perform two-stage sintering treatment on the green compact in a vacuum sintering furnace; S7: After sintering is completed, perform cooling treatment; In the present invention, by optimizing the alloy formula and innovating the preparation process, the hardness, toughness, and high-temperature resistance of the high-strength cemented carbide are improved, and at the same time, the production process is simplified, and the overall performance and application versatility of the material are enhanced.

The present invention discloses an α-Fe2O3 / RGO / mpg-C3N4 nanocomposite material and its preparation method and application, belonging to the field of materials science and technology. The mpg-C3N4 material is modified in terms of morphology control, element doping, and heterostructure construction, and a Z-type heterojunction photocatalyst with a solid electron mediator is synthesized based on the mpg-C3N4. By controlling the synthesis conditions, a large specific surface area, visible light response, non-toxic and environmentally friendly α-Fe2O3 / RGO / mpg-C3N4 nanocomposite material is prepared. This nanocomposite material overcomes the inherent shortcomings of single semiconductors g-C3N4 and α-Fe2O3, such as small specific surface area, low charge carrier separation efficiency, and limited visible light absorption capacity. The structure and properties of the nanocomposite material are characterized by XPS, XRD, SEM, TEM, FT-IR, BET, UV-vis DRS, and Zeta potential analysis, proving the successful preparation of the material. It was used to photocatalytically degrade the explosive 2,4,6-trinitrotoluene. A series of exploratory experiments showed that under 12 hours of illumination, the photodegradation rate of TNT by 10wt% α-Fe2O3 / RGO / mpg-C3N4 nanocomposite material can reach 99.57%, which is better than other materials and methods.

This application discloses a method for obtaining the detonation velocity and detonation pressure of energetic materials based on atomic-scale dynamics, relating to the field of materials science and technology. The method includes: acquiring an initial configuration file of the energetic material to be tested, and performing dynamic processing on the initial configuration file using a materials simulation model to generate a first training dataset; iteratively training the potential function using the first training dataset to obtain a structure file corresponding to each generation of training; sampling and screening the structure files, and calculating the accuracy adjustment parameters corresponding to the sampled and screened structure files using first-principles calculation software; adjusting the parameters of the materials simulation model using the accuracy adjustment parameters, and using the adjusted materials simulation model to generate a second training dataset from the structure files obtained from each generation of training and the first training dataset; and predicting the performance of the energetic material to be tested based on the potential function trained on the second training dataset. A general method for predicting material properties that balances accuracy and efficiency is proposed.

The invention discloses a hard ceramic coating stress solving method, device and equipment and a medium, relates to the technical field of materials science, and aims to accurately capture the influence of a microstructure on the hard ceramic coating stress and improve the solving precision of the hard ceramic coating stress. The method comprises the steps that effective sampling point coordinates in at least one unit material area are obtained according to a microstructure image of the hard ceramic coating, and the microstructure image is used for presenting various detail features of the surface of the hard ceramic coating; the coordinates of the effective sampling points in the at least one unit material area are input into a pre-trained mechanical property analysis model, mechanical property parameters of the at least one unit material area are obtained through solving of the mechanical property analysis model, and the mechanical property analysis model comprises an auxiliary solving network and a parameter solving network; and calculating the stress value of the hard ceramic coating according to the mechanical property parameters of the at least one unit material area.

The invention belongs to the technical field of environmental engineering and material science, and particularly relates to a hydroxyl-containing zinc zeolite imidazole framework material as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a zinc precursor and an imidazole ligand in proportion by adopting a mechanochemical method, mechanically grinding under the assistance of a small amount of water, washing and drying. The obtained material is of a microporous structure, the specific surface area is 500-2000 m < 2 > / g, the particle size is 20 nm-50 [mu] m, and the defect rate is high. The method has the advantages that the preparation process is green, environment-friendly, rapid, efficient and suitable for mass production, and the coordination capability can be enhanced through the synergistic effect of hydroxyl and imidazole groups of the residual raw materials. The obtained material can be used for heavy metal ion adsorption, especially has high removal rate and high adsorption capacity (50-600 mg / g) for radioactive uranium elements, and has wide application prospects in the field of environmental restoration.

The invention discloses a preparation method of a high-zinc small-wall-thickness aluminum alloy profile for aviation, and belongs to the technical field of material science. Preparation: preparing a high-zinc aluminum alloy cast ingot; after two-stage homogenizing annealing, saw cutting and turning are conducted, and after heating, extrusion forming is conducted; and after two-stage solid solution quenching treatment, pre-stretching is conducted, then two-stage aging treatment is conducted, and a T76511-state profile, namely the high-zinc small-wall-thickness aluminum alloy profile for aviation, is obtained. According to the method, the two-stage homogenizing annealing and two-stage solid solution heat treatment processes are adopted, so that the structure property of the profile is more uniform and stable, and it is guaranteed that all properties of a final product meet standard requirements. The prepared high-zinc small-wall-thickness aluminum alloy profile has the advantages of being high in strength, good in corrosion resistance, resistant to corrosion and the like, the average tensile strength of the high-zinc small-wall-thickness aluminum alloy profile is 635 MPa which is 21 MPa higher than the product standard requirement, the average yield strength of the high-zinc small-wall-thickness aluminum alloy profile can reach 610 MPa which is 24 MPa higher than the product standard requirement, the requirement of amphibious aircrafts of special models for high-performance aluminum alloy materials is met, and the high-zinc small-wall-thickness aluminum alloy profile can be widely applied to the field of aerospace.

The invention discloses a method for improving anti-settling property of electronic paste, which belongs to the technical field of material science and comprises the following steps: step 1, mixing a diluent, a dispersing agent and a silicon coupling agent in proportion to obtain a mixture I; 2, infiltrating inorganic powder into the mixture I in the step 1 to obtain a mixture II; step 3, adding epoxy resin and phenolic resin into the mixture 2 in the step 2 to obtain a mixture 3; and step 4, uniformly dispersing the mixture 3 in the step 3 into slurry with good fluidity through a high-speed dispersion machine. The electronic paste prepared by the invention has excellent anti-settling property, and the settling volume fraction of the product within 60 days is reduced from 1.5% to 0.6% on the basis of keeping the original rheological property; the method for preparing the electronic paste has the advantage of simplicity in operation and is suitable for large-scale production.

The invention discloses a self-repairing micro-capsule solution and a preparation method thereof, and relates to the technical field of material science, the self-repairing micro-capsule solution is composed of a carrier, a repairing agent, a catalyst and an organic solvent, and the self-repairing micro-capsule solution is prepared by stirring raw materials in a specific proportion in a polymerization reactor and then filtering. The ink-jet printing insulating ink contains a self-repairing microcapsule solution, mono-or multi-functional acrylate, a photoinitiator, an auxiliary agent and a pigment, and is prepared by mixing, stirring, grinding and filtering. The ink can be cured into an insulating protective film on the surfaces of a printed circuit board, a ceramic substrate and the like under the conditions of UV illumination and heating. The protective film has a self-repairing function, and if micron-sized scratches or cracks appear on the protective film, the protective film can be repaired through directional UV illumination and heating. Meanwhile, the ink has excellent adhesion to a base material, and a formed insulating coating film has good thermal shock resistance and good insulation reliability, can effectively meet the electronic packaging process requirements, and has a good application prospect.

The invention discloses a bionic graphene induced down fiber / chitosan uranium adsorbent, and a method and application thereof, and belongs to the technical field of material science. The preparation method comprises the following steps: firstly, carrying out cyano grafting subsequent oximation modification on crushed down feather fibers, and then reacting with chitosan / graphene oxide under different conditions to prepare the bionic graphene induced down feather fiber / chitosan uranium adsorbent. Graphene oxide with excellent photo-thermal conversion capacity is introduced into a system in a doping mode, so that the photo-thermal conversion capacity and adsorption capacity of the material are improved, and the uranium adsorbent with more excellent adsorption performance is prepared. The advantages of the porous structure and the rigid specific surface area of aerogel are combined, the preparation route is simple, the complexity of the system in design and processing is reduced, and an effective way is expected to be provided for solving the contradiction between the high adsorption performance and the excellent photo-thermal conversion capacity of the uranium adsorption material.

This utility model discloses a forging stress detection device, relating to the field of materials science and technology. The device includes a base with a support frame fixedly connected to its top. A fixing mechanism is mounted on the base, and a detection mechanism is mounted on the support frame. The fixing mechanism includes a limiting ring, with a threaded rod rotatably connected to the inner wall of the limiting ring. By incorporating a soft pad, rotating a knob causes the threaded rod to rotate, which in turn moves a threaded cylinder downwards along the threaded rod. This threaded cylinder then pulls a connecting rod downwards, which in turn pulls the moving blocks closer together. The soft pad, which clamps and fixes the forging, effectively isolates it from external vibrations and the vibrations of the testing equipment, preventing displacement due to insufficient fixation and ensuring the accuracy of the test results.

The invention discloses a method for analyzing mechanical properties of a silane coupling agent reinforced copper-prepreg interface, belongs to the technical field of material science, and is suitable for interface combination optimization of a copper foil and a prepreg in a PCB (Printed Circuit Board). The method comprises the following steps: (1) establishing a prepreg and silane coupling agent cross-linked network model; (2) establishing a copper substrate model and carrying out surface treatment; (3) constructing an inorganic-organic composite interface; (4) enabling the cross-linked network to be in full contact with the copper substrate by compressing the script, and optimizing relaxation to be balanced; (5) applying a tensile force through a tensile script, and recording a stress-strain curve; and (6) comparing curves of different coupling agent systems, and analyzing the interface strengthening micromechanism. The method has the advantage of high-throughput screening, multiple systems can be evaluated in parallel within several days, the efficiency is improved by more than one order of magnitude compared with a traditional experimental period (2-4 weeks per kind), actual reagents do not need to be used, and the research and development cost and the environmental risk are reduced.

The invention relates to the technical field of computational material science, and provides a conductive carbon black primary particle three-dimensional molecular model construction method, which comprises the following steps: S1, obtaining structural characterization parameters of conductive carbon black; s2, constructing a two-dimensional aromatic hydrocarbon molecular monomer sample model based on the structural characterization parameters; s3, constructing two-dimensional aromatic hydrocarbon molecular monomer models in batches based on the two-dimensional aromatic hydrocarbon molecular monomer sample models; s4, constructing a three-dimensional molecular model based on the two-dimensional aromatic hydrocarbon molecular monomer model; s5, the constructed three-dimensional molecular model is optimized; and S6, verifying the constructed three-dimensional molecular model. According to the method, the three-dimensional molecular model of the conductive carbon black is constructed on the basis of the obtained structural characterization parameters of the conductive carbon black, the disordered and bent graphite lamellar structure in the conductive carbon black is effectively represented, multilayer nested structure modeling of the conductive carbon black is realized, and the real microstructure of the conductive carbon black can be reflected more accurately.

This invention belongs to the fields of powder metallurgy and materials science and technology, specifically disclosing a preparation process for a high-wear-resistant WC-based composite material. The process involves preparing WC powder, second-phase powder, and graphene material; adding the graphene material to a dispersion medium and performing ultrasonic dispersion; mixing the graphene dispersion with the WC powder and second-phase powder and ball milling; drying the mixture using a vacuum rotary evaporation drying process; and densifying it using a hot-pressing sintering process. This invention enables the WC-based composite material to simultaneously achieve high hardness and high fracture toughness; effectively inhibits oxidative wear of the WC-based composite material at high temperatures, improving its high-temperature wear resistance; and achieves uniform and stable dispersion of the graphene reinforcing phase in the WC matrix, avoiding agglomeration, thereby fully utilizing its strengthening and lubrication effects. The composite material prepared by this invention is particularly suitable for use as high-speed cutting tools, high-temperature molds, and high-temperature moving parts in aerospace applications, and has broad application prospects.

This invention relates to the field of materials science and technology, and discloses the application of zwitterionic polymer injectable hydrogels as vitreous substitutes. Zwitterionic monomers selected from CBUIA, CBUTA, CBOH, CBMA, or MPC are dissolved in an aqueous phase, and polymerization is initiated by an initiator to obtain a hydrogel. After swelling equilibrium, the zwitterionic polymer injectable hydrogel is obtained. This invention uses initiator-initiated free radical polymerization of monomers and prepares physically cross-linked pure zwitterionic hydrogels through multi-hydrogen bond interactions or chain entanglement. The pure zwitterionic hydrogel with injectable properties is prepared through swelling equilibrium. It exhibits good biocompatibility, which is beneficial for improving the affinity of this zwitterionic polymer-based hydrogel vitreous substitute to the vitreous cavity, reducing adverse reactions after implantation. Furthermore, the preparation method is simple and the conditions are mild, making it more suitable for large-scale promotion and use as a vitreous substitute in ocular surgery, and it exhibits excellent biofouling resistance.

This invention discloses a rare-earth element-doped tellurate scintillation glass thin film, its preparation method, and its applications. It belongs to the field of materials science and technology, using tellurate glass as a substrate and uniformly co-doping with Eu. 3+ Ions and Yb 3+ Ions; the tellurate scintillation glass film has a thickness of approximately 80 nm to 200 nm. The tellurate scintillation glass film obtained by this invention has a uniform thickness and is defect-free, exhibiting high efficiency in Eu scintillation. 3+ →Yb 3+ Its energy down-conversion properties enable it to be used as a near-infrared luminescent or down-conversion material, and it has superior performance potential in areas such as serving as a spectral conversion layer to improve the light response of silicon-based solar cells or as a near-infrared micro scintillator.