65 results about "Advanced materials" patented technology

The invention provides a graphene oxide and aramid nanofiber hybrid modified chopped fiber reinforced flexible polymer thermal protection material as well as a preparation method and application thereof, and belongs to the field of advanced materials. Aiming at the problems of huge modulus difference, poor interface compatibility and serious stress concentration between fibers and a flexible matrix, a hybrid interface phase composed of graphene oxide and aramid nanofibers is constructed, so that an inert surface microstructure of the chopped fibers is improved, and a multi-scale mechanical interlocking structure is promoted to be formed between the fibers and the flexible matrix; the modulus mismatch between the fiber and a rubber matrix is effectively relieved, and more uniform and efficient stress transfer of an interface area is realized. In the processes of tensile deformation, dynamic loading, high-temperature ablation and the like, the hybrid interface phase can keep tight interface combination between the fibers and the flexible matrix, the ablation anti-scouring performance and mechanical performance of the flexible composite material are remarkably improved, especially the flexible ablation performance in the high-dynamic and deformation state, and the flexible composite material has good application prospects.

The invention discloses a composite coating diaphragm and a preparation method thereof and a secondary battery, the composite coating diaphragm comprises a base membrane and a composite functional coating compounded on the surface of the base membrane, the composite functional coating comprises a first functional coating relatively close to the base membrane and a second functional coating relatively far away from the base membrane, the porosity of the first functional coating is smaller than that of the second functional coating, and the raw material components of the first functional coating comprise modified nanocellulose obtained by double-grafting cis-1, 4-polybutadiene and polyethylene glycol chain segments and gas-phase aluminum oxide. By constructing a diaphragm coating with a gradient pore structure and combining an advanced material modification technology, the composite coating diaphragm integrates high thermal stability, excellent electrolyte wettability and low-temperature adaptability, and can still keep stable structure and interface characteristics under an extreme temperature working condition; therefore, the method has good expandability and industrial application prospects, and is suitable for development and application requirements of high-performance lithium ion batteries and next-generation energy storage devices.

The invention relates to the technical field of laser welding, and discloses a laser welding device for a shock absorber pin, which comprises a mounting bottom plate, a limiting baffle plate, a fixed toothed plate, a rotating gear, a limiting end shock absorber pin, an inserting end shock absorber pin, a laser welder, a clamping assembly, a driving assembly and a circulating assembly, according to the device, through the meshing structure of the circulating assembly and the gear, revolution and autorotation of a workpiece to be welded are conducted synchronously, the laser welding device is driven to move synchronously in cooperation with the driving assembly, laser does not need to surround the workpiece, uniform girth welding can be completed, and welding seams are continuous and regular; the welding precision and connection stability are remarkably improved, advanced material preparation and continuous operation are supported through the circulating layout, workpieces to be welded can be synchronously replaced in the welding process, shutdown waiting is not needed, and meanwhile the production efficiency can be greatly improved.

The utility model discloses a fixture for rotor processing, which relates to the field of industrial equipment processing equipment and comprises a device main body, an open slot is arranged in the device main body in a penetrating manner, a placement plate is arranged at one end of the device main body, an expansion sleeve is movably arranged in the open slot, a limiting block is movably arranged in the expansion sleeve, and the limiting block is movably arranged in the device main body. One end of the inner diameter of the expansion sleeve changes from small to large, a rotating shaft matched with the limiting block is arranged in the expansion sleeve, one end of the rotating shaft is connected with a connecting plate, a placement groove is formed in the end, away from the device body, of the connecting plate, and a control motor matched with the rotating shaft is arranged in the placement groove. By adopting innovative structural design and advanced materials, the machining precision and stability of the rotor are improved. The equipment performance is guaranteed, the defective rate is reduced, the product quality is further improved, waste in production is reduced, the production cost is effectively reduced, and industrial production is promoted to a higher level.

Provided is a sacrificial composition. The sacrificial composition comprises a polymer (A) that undergoes acid-catalyzed decomposition, a compound (B) that generates an acid by heat, and a solvent (C), wherein the compound (B) that generates the acid by heat consists of a carboxylic acid and a base, and a content of the compound (B) is 1 to 60 parts by mass based on 100 parts by mass of the polymer (A). The sacrificial composition may exhibit at least one of properties as an advanced material or as a high performance material. The sacrificial composition may be used in the nanotechnology process to make semiconductor device / display device application, for example semiconductor chip, or a liquid crystal, quantum dot, OLED display fabricated on a substrate controlled by semiconductors.

The invention relates to the technical field of spacecrafts, in particular to a spacecraft defense material and a preparation method thereof, and designs a structure capable of effectively absorbing and dispersing impact energy on microscopic and macroscopic scales by utilizing computer simulation and an advanced material modeling technology. A base material with high strength, high toughness, light weight and corrosion resistance is selected, nanofibers, nanoparticles or nanosheet layers are embedded into the base material by utilizing a nanotechnology so as to enhance the mechanical property and the impact resistance of the base material, and the shape, the structure and the performance of the material are accurately controlled by adopting an advanced manufacturing technology. The prepared materials are stacked, bonded or mechanically connected together to form a final defense structure, and the structure is strictly tested. By combining a nanotechnology, composite material engineering and an additive manufacturing defense material, the deep requirement of a space exploration task is met, and the safety of astronauts and the smooth completion of the task are ensured.

The invention relates to the technical field of advanced materials, integrated circuits and microelectronic devices, and provides an atomic layer Van der Waals heterojunction-based sensing, storage and calculation integrated device and a preparation method thereof. The device comprises a substrate, a first gate electrode, a first two-dimensional Van der Waals alternating magnetic material layer, a second gate electrode, a first two-dimensional Van der Waals ferromagnetic material layer, a two-dimensional Van der Waals insulating material layer, a second two-dimensional Van der Waals ferromagnetic material layer, a third gate electrode and a second two-dimensional Van der Waals alternating magnetic material layer which are sequentially stacked from bottom to top, and a fourth gate electrode and an encapsulation layer. According to the invention, the integration of the sensing of optical signals, the nonvolatile storage of information and the logic calculation function is realized in a single device unit, and the sensing, storage and calculation integrated function of a single device constructed by an atomic layer is realized. On the basis, by combining and interconnecting a plurality of device units, basic logic functions such as an AND gate, an OR gate and a NOT gate can be further realized, and a solid foundation is laid for expanding application scenarios.

This invention relates to a method for testing the fracture toughness of anisotropic eccentrically loaded single-sided notched tensile specimens, comprising: S1, establishing a two-dimensional plane stress model of anisotropic material ESET specimens; S2, mesh generation; S3, calculating displacement, strain, and stress field to obtain the stress intensity factor K and compliance C under different initial crack lengths and anisotropic material parameters; S4, establishing crack length calculation formulas and stress intensity factor calculation formulas based on compliance under different eccentric loading rates, initial crack lengths, and anisotropic material parameters. This invention allows for rapid and accurate measurement of crack length simply by measuring the deformation of the material under external force; it reliably extends the application range of standardized eccentrically loaded single-sided notched tensile specimens from traditional isotropic metals to modern advanced materials such as composite materials, additive manufacturing alloys, and rolled plates, while ensuring the calculation accuracy under anisotropic conditions.

The application provides a poly(dimethyl diphenyl imide) siloxane / phenolic based double network hybrid resin and a preparation method and application thereof, and belongs to the field of advanced material technology. The application firstly provides a copolymer for preparing an ablative thermal protection hybrid resin, and the structure of the copolymer is shown as formula I. Then, the hybrid resin prepared from the copolymer is provided. The copolymer shown as formula I and the phenolic resin in the hybrid resin of the application have good compatibility, and the copolymer is uniformly distributed in the phenolic resin; and the hybrid resin is graphitized and ceramized in the ablative process, and has excellent ablative resistance. The application provides a new idea and method for preparing a new ablative resistant hybrid phenolic resin through copolymerization, and a new ablative resistant hybrid resin which is expected to meet the increasingly severe flight environment in the future is prepared.

This invention relates to a formulation for preparing an optical layer containing a metal oxide. The formulation can exhibit at least one of the properties of an advanced material or a high-performance material. The formulation can be used in nanotechnology processes to fabricate semiconductor device / display applications, such as semiconductor chips, or liquid crystal, quantum dot, and OLED displays fabricated on semiconductor-controlled substrates.

The application discloses a system and a method for accelerating the degradation of solid nuclear waste, aiming at eliminating radioactive hazards from the root. The system comprises an inner barrier, an intermediate filling layer and an outer barrier. The inner barrier is made of functional parallel nanotube material, the outer barrier is a titanium alloy container, and the intermediate filling layer is nanotube grade graphene powder. The method is to wrap the solid nuclear waste in the inner barrier, assemble it through the intermediate filling layer and the outer barrier, and then store it in a deep geological environment. Through the strong parallel force field created by the inner barrier and the parallel wave particle flow in the environment, the energy is gathered to deconstruct the cross superposition operation state of the basic particles of the nuclear radiation source. The scheme combines advanced material science, photon physics and philosophical thought, realizes the complete elimination of radioactive hazards, provides the possibility for the transformation and reuse of solid nuclear waste, and has environmental protection and innovation.

The application belongs to the field of advanced material technology, and relates to a method for preparing large-size room-temperature ferromagnetic graphene based on stress engineering, ferromagnetic graphene and application thereof. The method is as follows: 3 or more layers of copper-based graphene are folded densely by a mechanical method, and then at least 10 cycles of rapid cooling and heating are performed, and the ferromagnetic graphene is obtained; the process of rapid cooling and heating is as follows: the copper-based graphene after being folded densely is placed in a cold trap environment of 70-120K for cooling, and then is rapidly placed in an environment of room temperature and above for heating. Through the pretreatment method of mechanical folding and continuous rapid cooling and heating, strong and tough ferromagnetic property is observed in large-size graphene (centimeter scale), and the Curie temperature is 100K to room temperature and above. The ferromagnetic graphene in the application is applied to the fields of flexible electronic devices and wearable artificial intelligence.

The application provides a kind of chopped fiber reinforced flexible polymer thermal protection material by graphene oxide and aramid nanofiber hybrid modification and its preparation method and use, belongs to the field of advanced materials.Aiming at the problem that the modulus difference between fiber and flexible matrix is huge, the interface compatibility is poor, and the stress concentration is serious, by constructing the hybrid interface phase composed of graphene oxide and aramid nanofiber, the microstructure of the inert surface of the chopped fiber is improved, the multi-scale mechanical interlocking structure between the fiber and the flexible matrix is promoted, the modulus mismatch between the fiber and the rubber matrix is effectively relieved, and the uniform and efficient stress transfer in the interface area is realized.In the process of tensile deformation, dynamic load and high temperature ablation, the hybrid interface phase can keep the close interface bonding between the fiber and the flexible matrix, significantly improve the ablation and erosion resistance of the flexible composite material and the mechanical properties, especially the flexible ablation performance under high dynamic and deformation state, and has good application prospect.

The composition can be used for a negative photosensitive composition, and the composition can exhibit characteristics of at least one advanced material or high-performance material. The compositions may be used in nanotechnology processes to fabricate semiconductor / display devices, such as liquid crystal, quantum dot or OLED displays fabricated on substrates and controlled by semiconductors. A negative-type photosensitive composition comprising (I) a polysiloxane, (II) an acrylic polymer, (III) a compound comprising two or more (meth) acryloyloxy groups, (IV) a polymerization initiator, (V) a thiol compound comprising at least two thiol groups, and (VI) a solvent wherein component (II) has a glass transition temperature of 0 to 60 DEG C.

The invention discloses a pavement repairing composite material and a preparation process and an application process thereof, the pavement repairing composite material provided by the invention comprises an interface agent and a repairing material, the interface agent comprises SBS modified asphalt, water, an emulsifier, a defoaming agent, a stabilizer, an anti-stripping agent and SBR latex; the repairing material comprises single-component glue, aggregate and reinforced fibers, and the two components cooperate to achieve the integrated repairing effect of strong bonding, high bearing, crack resistance and durability. When in use, the asphalt pavement pit slot repairing work can be quickly completed by brushing the interface agent and filling the repairing material. Advanced materials and technologies are adopted for repairing the damaged position of the asphalt pavement, disease aggravation is prevented, it is guaranteed that the repaired pavement is smooth and durable, and the original bearing capacity and driving comfort of the pavement are restored.

The utility model discloses a wear-resistant anti-aging vacuum roller, which belongs to the technical field of vacuum rollers and comprises a workbench, a fixing plate fixedly mounted at the top of the workbench, a rotating shaft rotatably mounted in the fixing plate, a vacuum roller body fixedly mounted on the outer side of the rotating shaft, and a mounting shell mounted on the outer side of the vacuum roller body in a sleeving manner. An anti-aging layer is fixedly mounted on the outer side of the mounting shell, a wear-resistant layer is fixedly mounted on the outer side of the anti-aging layer, four sliding frames are slidably mounted in the vacuum roller body, moving blocks are slidably mounted in the four sliding frames, inserting blocks are fixedly mounted on one sides of the four moving blocks, and moving rods are fixedly mounted on the other sides of the four moving blocks. The whole vacuum roller device does not need to be disassembled complexly, the maintenance time is greatly shortened, upgrading and reconstruction of the vacuum roller are facilitated, more advanced materials and technologies are adopted in time, the performance and competitiveness of equipment are improved, large-scale replacement of the whole vacuum roller is not needed, and the cost and difficulty of equipment upgrading are reduced.

This invention relates to the field of petroleum engineering equipment and advanced materials processing technology, specifically to an anti-galling toothed connection structure suitable for titanium alloy oil casing, comprising interlocking female and male threads. Through parametric design of tooth width and groove dimensions, female and male thread angles and tooth heights, the galling phenomenon caused by high temperature and friction during processing is reduced, the risk of stress concentration is lowered, sealing and connection reliability are improved, thread engagement accuracy is guaranteed, and combined with surface treatment processes, the overall sealing and connection strength is enhanced. It is suitable for extreme environments such as deep wells, ultra-deep wells and offshore oil and gas extraction.

The application discloses a method for improving the strength and toughness of duplex stainless steel based on alternating powder laying in additive manufacturing, and belongs to the field of metal additive manufacturing and advanced material design. In the method, duplex stainless steel powder and austenitic stainless steel powder are respectively laid on different layers for forming through an alternating powder laying strategy. After laser melting and solidification, a composite structural material with alternating arrangement of ferrite and austenite is directly obtained. Meanwhile, the method retains the characteristics of laser powder bed fusion forming materials, i.e. fine grain structure and high density dislocation, and can realize the synergistic improvement of strength and elongation without subsequent heat treatment, with the yield strength being greater than or equal to 700 MPa and the elongation being greater than or equal to 25%, which is significantly higher than the standard value of ASTM 240.

The application relates to a microfluidic chip with a substrate surface functional modification and a crystallization control method, which solves the technical problem of how to apply the microfluidic chip to precisely control the crystallization process, and comprises a substrate and a cover plate, the substrate is provided with patterned SAMs, the cover plate comprises an upper layer and a lower layer, the upper layer is provided with a gas passage and a gas containing chamber, the upper layer is provided with a gas input through hole, a gas output through hole, a liquid input through hole and a liquid output through hole, the lower layer is provided with a liquid passage and a reaction chamber, the lower layer of the cover plate is bonded with the substrate, and the patterned SAMs are located in the reaction chamber. The application is suitable for precise preparation of drug crystals, biological materials, ceramic materials, nanometer materials and optical elements, and can be widely applied to the pharmaceutical industry, biomedical engineering, advanced material synthesis and other industries.

The present invention relates to a top coating composition comprising polymer (A), surfactant (B) and solvent (S). The polymer (A) comprises a side chain comprising a fused aromatic ring. The surfactant (B) comprises an aliphatic hydrocarbon portion (B1) and an alkylene oxide portion (B2). the solvent (S) comprises water (S1). The composition can be used for a top coat composition, which can exhibit at least one of properties of advanced material or high performance material. The composition can be used in the nanotechnology process to make semiconductor device / display device application, for example liquid crystal, quantum dot or OLED display fabricated on a substrate, and controlled by semiconductors.

The invention provides a special free radical plasticizing-activating agent, low-temperature forming high-temperature-resistant polyimide resin prepared based on the special free radical plasticizing-activating agent, a preparation method and application, and belongs to the technical field of advanced materials. On the basis of an integrated molecular design thought with the synergistic effect of viscosity reduction, flow increase and low-temperature crosslinking, a low-viscosity polyimide oligomer capable of generating free radicals is introduced to serve as a free radical plasticizing-activating agent; in the heating process, free radicals generated in situ promote synergistic copolymerization of terminal alkynyl and internal alkynyl, so that the system has both low-temperature processability and high-temperature stability. The polyimide resin disclosed by the invention has low-temperature efficient curing and excellent heat resistance and mechanical properties, and breaks through the bottleneck that the traditional polyimide resin is difficult to balance between process temperature and high-temperature thermal stability, so that the polyimide resin has a wide application market in the fields of aerospace, electronic packaging, heat resistance and thermal protection composite materials.

The invention relates to a method, apparatus, and product for manufacturing lithium-ion batteries, employing a novel z-fold assembly approach with an integrated separator-anode structure. The method involves coating separator layers directly onto both sides of an anode sheet, forming a unified structure that is folded into a z-pattern with cathode sheets positioned between the folds. This innovative assembly technique eliminates the need for a separate separator layer and the die-cutting step for the anode, reducing the number of layers in the assembly process and streamlining manufacturing. By removing the necessity for separate separator placement, the invention reduces production complexity, minimizes risks of misalignment, and enhances assembly precision. The z-fold approach further optimizes the manufacturing workflow by minimizing scrap rates, increasing production speed, and simplifying operations. The integrated separator is composed of advanced materials, including polymers and ceramic-polymer hybrids, offering superior thermal stability, ionic conductivity, and mechanical strength. The invention also introduces an automated apparatus that integrates dual-sided coating, z-folding, and cathode placement processes. Equipped with precision alignment sensors and robust quality control systems, the apparatus ensures scalable, high-efficiency industrial production. Batteries produced using this approach exhibit enhanced cycling stability, reduced internal resistance, and higher energy density, coupled with significant improvements in safety and manufacturing efficiency. The invention is compatible with various battery chemistries, including lithium-ion, and supports applications in consumer electronics, electric vehicles, aviation, and energy storage systems.

The invention relates to a substrate surface functionalization modified micro-fluidic chip and a crystallization control method, and solves the technical problem of how to use the micro-fluidic chip to accurately control the crystallization process, the substrate comprises a substrate and a cover plate, the substrate is provided with patterned SAMs, the cover plate comprises an upper layer and a lower layer, the upper layer is provided with a gas channel and a gas accommodating chamber, and the lower layer is provided with a gas outlet. The upper layer is provided with a gas input through hole, a gas output through hole, a liquid input through hole and a liquid output through hole, the lower layer is provided with a liquid channel and a reaction chamber, the lower layer of the cover plate is bonded with the substrate, and the patterned SAMs are located in the reaction chamber. The method is suitable for precise preparation of drug crystals, biological materials, ceramic materials, nanometer materials and optical elements, and can be widely applied to the industries of pharmacy, biomedical engineering, advanced material synthesis and the like.

The application discloses a system and method for coal grading refining and atomic recombination for high-end material, and belongs to the field of coal clean conversion and advanced material manufacturing. The method first converts coal into light aromatic hydrocarbons and a standardized active refined residual carbon with a specific hydrogen-carbon ratio and microstructure under mild conditions through the synergistic effect of high-frequency electromagnetic field, mechanical wave field and strong centrifugal force field. Then, the residual carbon is mixed with self-produced hydrogen-rich gas and activated and decomposed into active carbon species in plasma. Finally, the active species are directionally synthesized into preset high-end materials in a programmable multi-physical field environment. The system correspondingly comprises a hydrogenation refining unit, an activation and decomposition unit, a directional synthesis unit and an intelligent control unit. The application solves the world-wide problem of high energy consumption and poor selectivity in directly synthesizing materials from complex coal through atomicization by creatively preparing a standardized active precursor and realizing deep coupling of two-stage processes, and realizes high-value and materialized utilization of coal resources with almost zero emission.

The invention discloses a metamaterial with an evanescent shear modulus and a topological optimization design method of the metamaterial, and belongs to the technical field of aerospace structures and advanced material design. The method comprises the following steps: establishing a design domain of a periodic unit cell and discretizing; constructing a topological optimization mathematical model taking a relaxation function as an optimization target, and converting the problem of maximizing the ratio of the bulk modulus to the shear modulus, which is difficult to process directly, into a weighted optimization problem which can be solved steadily; predicting equivalent performance in combination with an energy-based homogenization method, and performing iterative solution by adopting an improved moving asymptote method and a novel floating projection function; and through error verification and parameterization reconstruction, outputting a geometric model with a clear boundary. According to the method, novel metamaterials such as two-dimensional quasi-single-mode / dual-mode and three-dimensional quasi-three-mode metamaterials with extremely high B / G ratio can be designed, seamless connection from optimization design to additive manufacturing is guaranteed, and an innovative material design solution is provided for high-performance vibration isolation and acoustic regulation and control components in the aerospace field.

A formulation for preparing an optical layer, preferably a particle-free optical layer, preferably to be used for nanoimprint lithography, more preferably to be used for direct UV nanoimprint lithography comprises compound A and a metal oxide precursor. Compound A is represented by the formula:X (NO2−)n, wherein X and n are defined herein. The formulation may exhibit at least one of properties as an advanced material or as a high performance material. The formulation may be used in the nanotechnology process to make semiconductor device / display device application, for example semiconductor chip, or a liquid crystal, quantum dot, OLED display fabricated on a substrate controlled by semiconductors.

The application provides a tungsten-based alloy and a preparation method and application thereof, and belongs to the technical field of advanced materials. The preparation method of the tungsten-based alloy comprises the following steps: uniformly mixing tungsten powder, refractory metal powder except tungsten and carbon powder to obtain mixed powder; reducing the mixed powder under a reducing atmosphere and at a temperature of 1900-2500 DEG C to obtain the tungsten-based alloy; and the mass percentage content of the carbon powder is greater than or equal to 0.35% based on the mass of the mixed powder. The preparation method of the tungsten-based alloy can improve the hardness of the tungsten-based alloy.

The application provides an epoxy composite material which can be repaired and reprocessed under conditions below the glass transition temperature, a preparation method and application thereof, and belongs to the field of advanced materials. The epoxy resin containing imine bonds and VU dynamic covalent bonds is used as a matrix, and a shaped composite material is prepared through continuous fiber reinforcement. The composite material has good initial interlaminar shear strength and repair capacity, can be hot-pressed and repaired under conditions below the glass transition temperature, and the fibers can be recycled without damage. The composite material prepared by the application has significant advantages in composite material repair, service life extension, secondary processing, recycling and reprocessing, recycling, and resource saving and environmental protection, and has great potential and broad application prospects in the field of composite materials.

The invention discloses a high-conversion-rate process and system for continuously synthesizing bis (diethylamino) silane by a gas phase method, and belongs to the technical field of fine chemical engineering and advanced material preparation. The process takes dichlorosilane and diethylamine as raw materials, and comprises the following steps: carrying out system inerting pretreatment; accurately metering the raw materials according to a specific molar ratio of (1: (4.0-5.0)), gasifying and mixing; the mixed gas is subjected to a continuous gas-phase reaction at 60-70 DEG C (preferably 65 DEG C), and solid byproducts are suspended through enhanced heat transfer and stirring; continuously discharging the reaction slurry through liquid level control, and removing solids through two-stage online filtration (containing nanoscale fine filtration); and finally, continuously rectifying the filtrate under reduced pressure to obtain a high-purity product. According to the method, solvent pollution is thoroughly eliminated, the bottlenecks of easy blockage and difficult continuity of a gas phase method are overcome through precise temperature control and an online solid removal technology, and the conversion rate gt of dichlorosilane is realized; the product purity is gt; 99.9% stable continuous production is achieved, and the high-end semiconductor process requirements are met.