126 results about "Advanced materials" patented technology

The invention belongs to the field of advanced materials, and particularly relates to super-flexible and ultrathin hybrid glass and a low-temperature large-area preparation method thereof, and the hybrid glass comprises the following raw materials: oligomeric silsesquioxane, inorganic nanoparticles and a high-molecular polymer porous film. The ultra-flexible and ultra-thin hybrid glass prepared by the invention can be processed and formed at room temperature or lower temperature, compared with the existing commercial ultra-thin glass, the flexibility of the ultra-thin hybrid glass is remarkably improved, the ultra-thin hybrid glass is thinner, the problem that the traditional glass is fragile and the technical challenge in a thinning process are overcome, and the ultra-flexible and ultra-thin hybrid glass has good application prospects. The electronic equipment can be lightened and thinned, and the service life of the electronic equipment can be prolonged.

The invention belongs to the field of advanced materials, and particularly relates to polyimide resin with low curing temperature and high heat resistance and a preparation method thereof. According to the invention, pararosaniline is introduced into the molecular chain structure of the phenylacetylene-terminated polyimide resin, and the curing temperature of the phenylacetylene-terminated polyimide resin is reduced by changing the spatial distortion degree of the polyimide molecular chain and introducing free radicals to catalyze the curing process. The polyimide resin can be cured and molded at a relatively low temperature, and keeps excellent heat resistance and mechanical properties. The forming temperature of the high-performance polyimide and the composite material thereof is effectively reduced, so that the manufacturing difficulty and cost are reduced, and the preparation method has important application prospects.

The invention provides a phase change enhanced ablation-resistant modified liquid silicone rubber material as well as a preparation method and application thereof, and belongs to the field of advanced materials. According to the invention, paraffin is adopted as a phase change filler, so that the ablation resistance and heat insulation performance of the expanded ceramic liquid silicone rubber material are remarkably improved, and the prepared silicone rubber composite material has the advantages of low density, low ablation surface temperature, strong carbon layer and high heat absorption capacity. The phase-change reinforced modified expanded ceramic flexible ablation-resistant material further improves the ablation resistance and high-temperature heat insulation performance of a liquid silicone rubber material, and has a good application prospect in the fields of aerospace thermal protection, building heat insulation and the like.

The invention discloses a hafnium hybrid carbon-rich polysiloxane flexible ablation material as well as a preparation method and application thereof, and belongs to the field of advanced materials. According to the invention, a hafnium hybrid carbon-rich siloxane system is designed; in the ablation process, on one hand, a continuous stable carbon skeleton is constructed through a phenyl / vinyl carbon-rich structure; on the other hand, an Hf-O-Si structure is introduced into a polysiloxane main chain, so that formation of SiHfOC composite ceramic at high temperature is promoted, the ablation resistance of the flexible polysiloxane material is remarkably improved, and the flexible polysiloxane material can be used as a base material of a flexible thermal protection coating, a structural part and the like and has a very good application prospect in the field of thermal protection materials.

The invention provides a continuous annealing process method for cooperatively regulating and controlling the shape of an ultrathin and wide precise foil, and relates to the technical field of advanced material processing frontier. According to the continuous annealing process method for synergistically regulating and controlling the shape of the ultrathin and wide precise foil, micron-sized precise foils with different marks, the specification of 0.02-0.2 mm and the width of more than 600mm are selected for continuous annealing, and the preparation process comprises the following steps: putting a cold-rolled and cleaned ultrathin and wide foil coiled material into a continuous annealing furnace for annealing treatment, and the method can be suitable for regulating and controlling the structure properties and the plate shapes of various ultrathin precise foils. The method can effectively control the abnormal growth of crystal grains, realizes the fine grain structure of the foil, improves the surface quality and the mechanical property of the ultrathin precise foil, fills the technical defects of the plate shape consistency and the structure property of the ultrathin and wide precise foil after annealing, and has positive significance in promoting the development of the key technical industry in China.

The invention relates to the technical field of spot welding optimization, in particular to a spot welding optimization method and system based on spacing constraint, and the method comprises the following steps: obtaining welding current flow direction data in the manufacturing of a safety box body, analyzing the distribution condition of current between welding spots, monitoring the surface and surrounding temperatures of the welding spots, and analyzing the heat-conducting property of metal. And identifying the energy diffusion state between the welding spots to obtain the energy distribution characteristics of the welding spots. According to the method, the layout and spacing of the welding spots are adjusted through the heat conduction performance of metal of the safety box body, the stability and consistency of the welding process are further improved, material stress and deformation caused by uneven heating are reduced, temperature changes after welding are analyzed, the welding sequence and path can be optimized, the overheating risk is reduced, and the welding quality is improved. The overall strength and durability of the structure are improved, the welding quality and efficiency are remarkably improved, and the structure is particularly suitable for complex assemblies and advanced materials in the high-standard production environment.

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 provides a method for improving heat conductivity and electric breakdown strength of a polyimide film, and relates to the field of advanced materials.The method comprises the steps that heat conduction filler is pretreated through an aminated siloxane coupling agent, so that amino active sites are formed on the surface, and then a polymer nano brush of a special structure is constructed on the surface of the filler; by utilizing the multi-layer effects of good compatibility, entanglement, hydrogen bonds, pi-pi accumulation and the like of the nano brush and a polyimide matrix, uniform dispersion and strong interface construction of the nano filler are realized, and the thermal conductivity of the polyimide film is greatly improved under the condition of low additive amount; meanwhile, based on the anti-breakdown characteristic of the inorganic nanofiller, the electric breakdown strength of the polyimide film is improved.

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.

The invention discloses a temperature self-adjusting material and application thereof, and belongs to the technical field of advanced materials, heat management and light management, the temperature self-adjusting material comprises a radiation refrigeration inorganic coating and a thermosensitive coating; the radiation refrigeration inorganic coating comprises inorganic high-reflectivity nanoparticles and an inorganic silicate adhesive; the thermosensitive coating is prepared from 2-phenylamino-3-methyl diethylaminofluoroalkane, acrylic resin and benzoyl peroxide. The invention further discloses a preparation method of the thermosensitive coating. The photo-thermal management capacity of the building material is optimized by introducing the radiation refrigeration coating and the thermosensitive coating with the self-adjusting capacity on the surface of the building base material, the building material is endowed with different optical capacity expressions at different temperatures, and therefore the adjustable radiation refrigeration / solar heating function is achieved.

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.

The present invention discloses a method and system for predicting ultra-high cycle fatigue life based on load frequency effect, which belongs to the technical field of material fatigue life prediction. Taking into account the influence of load frequency effect on the crack initiation life and crack propagation life of materials, correction functions related to load frequency are introduced into the life models of crack initiation and propagation, respectively, and the corrected crack initiation and propagation life models are integrated to obtain an ultra-high cycle fatigue total life model, which can accurately predict the ultra-high cycle fatigue life of materials with load frequency effect. For engineering materials whose ultra-high cycle fatigue life is not related to load frequency, the method of the present invention can fall back to the original method that does not consider the influence of frequency. The present invention has a certain universality and can predict the ultra-high cycle fatigue life of materials with similar characteristics at different frequencies, make full use of experimental data of different frequencies in existing literature to understand the ultra-high cycle fatigue characteristics of materials, and provide theoretical support for the practical engineering application and promotion of advanced materials.

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 invention discloses a method for multi-dimensional uniform deformation of a micro-nano structure, belongs to the technical field of advanced material processing and manufacturing, and solves the problems of product structure distortion and out-of-control precision of a nano-scale structure caused by low shrinkage rate and non-uniform sintering process densification in the prior art. The method comprises the following steps: uniformly mixing matrix powder, an activator and a morphology stabilizer to obtain a mixture, and carrying out micro-injection molding on the mixture to obtain a pre-amplified micro-nano structure; performing segmented degreasing on the pre-amplified micro-nano structure, performing gradient sintering, and performing hot isostatic pressing treatment to obtain a multi-dimensional uniformly-deformed micro-nano structure; wherein the matrix powder comprises metal powder and / or ceramic powder, the activating agent is eutectic alloy with the melting point smaller than or equal to 200 DEG C, and the morphology stabilizing agent is rare earth metal oxide and / or transition metal oxide. The invention has the advantages of high shrinkage rate, uniform shrinkage and high mechanical strength.

The application discloses a kind of MEMS device architecture, including cap layer, device layer and substrate layer, cap layer and device layer are bonded, the whole after bonding is bonded with substrate layer, cap layer is manufactured based on first silicon substrate, cavity structure is provided at the bottom of cap layer, high-depth groove structure is provided in cap layer, groove wall of high-depth groove structure is provided with silicon dioxide film, high-depth groove structure is filled with polycrystalline silicon and deposited, the upper surface of first silicon substrate is provided with silicon dioxide layer;Device layer is made based on SOI wafer, including the first silicon structure layer consisting of top layer silicon, buried oxide layer and the second silicon structure layer consisting of back substrate silicon;Substrate layer includes second silicon substrate, bottom cavity is provided on the top surface of second silicon substrate, exhaust hole is opened on the bottom surface of second silicon substrate.The application combines deep groove etching, polycrystalline silicon slot filling and bonding technology, utilizes advanced materials such as SOI wafer and polyimide layer, and realizes excellent signal isolation and flexibility of various MEMS IMU applications.

The present invention relates to a formulation for preparing an optical layer containing a metal oxide or mixture of metal oxides. 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 a Liquid crystal display (LCD), Light emitting diode display (LED display), organic light emitting display (OLED), micro-LED display, quantum dot display (QLED), AR display, VR display, MR display, plasma (PDP) display, electroluminescent (ELD) display fabricated on a substrate controlled by semiconductors.

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 present invention relates to a formulation for preparing an optical layer containing a metal oxide. 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 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 present invention relates to a formulation for preparing an optical layer containing a metal oxide. 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 invention belongs to an advanced material technology, and relates to a proton conductor and a preparation method thereof. The invention discloses a novel medium and low temperature perovskite type proton conductor, which is a barium-based perovskite type proton conductor, and is specifically BaN < 1-x > M < x > O < 3-delta >, N is a pentavalent metal including one or more of Nb < 5 + > and Ta < 5 + >; m is one or more of trivalent metals including Al < 3 + >, Ga < 3 + >, In < 3 + >, Sc < 3 + >, Y < 3 + >, Sm < 3 + >, Eu < 3 + >, Gd < 3 + >, Dy < 3 + >, Ho < 3 + >, Er < 3 + >, Tm < 3 + >, Yb < 3 + > and Lu < 3 + >; 0.5 lt; xlt; 1, the electrolyte material has low proton conduction activation energy in a medium-low temperature region. According to the invention, the high-concentration trivalent metal element with the concentration of 50-100% is utilized to form seepage conduction in the electrolyte and reduce the proton capture effect caused by the low-valence metal element, and the pentavalent element is utilized to reduce excessive generation of oxygen vacancies and maintain the structural stability, so that the material with good ionic conductivity in the medium-low temperature region is finally obtained.

The technology described herein is directed towards phase-change material-based (e.g., chalcogenide) radio frequency components that can be used in unit cells of a reconfigurable intelligent surface. A multi-state tunable capacitive element for reconfigurable operation is described, in which phase-change material operates as a switching element to controllably vary capacitance of each unit cell. The multi-state tunable capacitive element can be made of multiple subcircuits in which capacitors of various values can be selectively switched in or out to vary the capacitance of the multi-state tunable capacitive element, resulting in a phase change of a unit cell with respect to reflecting or refracting an electromagnetic wave. By arranging the subcircuits with capacitors of different values, and actuating each one in or out of the overall capacitive element, an analog-like variable capacitor is provided to provide more granular phase shift control of cells of a reconfigurable intelligent surface.

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.