41 results about "Prepared Material" patented technology

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 discloses a continuous flexible conductive material preparation device and method.The device comprises a continuous flexible material, a guide roller and a conductive coating assembly, the assembly is sequentially provided with a tackifying unit, a powdering unit, a curing unit, a chemical plating unit and a post-processing unit in the material conveying direction, the center lines of conveying channels of all the units are collinear, and the interface gap is smaller than or equal to 2 mm. The micro-nano metal powder seed source is planted through the powdering device, rapid growth and closing of the micro-nano metal powder seed source are achieved through chemical plating after solidification, a compact conductive network is constructed, and a finished product is obtained.The short-process, rapid, efficient and environment-friendly preparation of the continuous flexible high-conductivity material can be achieved, the prepared material is low in cost, good in conductivity and high in durability, material transmission deviation is avoided, and the continuous flexible high-conductivity material can be obtained. The method improves the compactness of the coating and the consistency of products, recovers redundant adhesion liquid and catalyst particles, reduces the production cost, and is suitable for preparation of continuous flexible conductive materials such as conductive yarns, fabrics and films.

The application belongs to the field of high polymer materials, and discloses a volatile-preventing and string-preventing high-barrier butyl rubber septum material and a preparation method thereof. The material comprises, by weight, butyl rubber 90-110 parts, modified sheet layer filler 5-12 parts, silane coupling agent containing dynamic bond 2-5 parts, polyisobutylene core-fluorine-containing hydrophobic shell core-shell microsphere 1-3 parts, vulcanizing agent 1.5-3 parts, vulcanization accelerator 0.8-2 parts, and activator 3-5 parts. By constructing a triple synergistic structure of "sheet layer directional barrier-dynamic interface plugging-matrix hydrophobic network interception", the penetration and stringing of volatile organic components in the sealing system are effectively inhibited. The preparation method comprises the steps of sheet layer filler modification, rubber matrix mixing, dynamic vulcanization and post-molding vulcanization, and has high controllability. The prepared material has excellent gas barrier property, puncture resistance and low-temperature elasticity, and is suitable for chromatographic sample bottle sealing systems.

The application belongs to the technical field of material preparation, and particularly relates to a light-heat material with an antireflection coating and a preparation method thereof. Micron or nanometer magnetic particles are used as the core, and inorganic materials with antireflection function are used as the functional coating to coat the surface of the magnetic particles; wherein the functional coating is metal oxide or non-metal oxide with light reflection inhibiting function. The method is simple in operation, mild in reaction condition, and the prepared material has an antireflection coating, which can reduce the energy loss in the form of diffuse reflection on the surface of the material in the light-heat conversion process, and shows high energy conversion efficiency. In addition, the coating material is stable in chemical property, so that the prepared composite particles have certain oxidation resistance, and can be widely applied in the fields of paint and water treatment chemical industry.

The present invention relates to the technical field of polymer materials, and particularly to a non-polar resin composite material, a preparation method therefor, and a use thereof. Specifically, disclosed in the present invention is a non-polar resin composite material, comprising, in parts by weight, the following components: 90-110 parts of a non-polar resin, 0.1-2 parts of a green organic pigment, 0.5-3 parts of a yellow organic pigment, 0.1-0.5 parts of a light stabilizer, and 0.5-3 parts of water. The present invention provides a non-polar resin composite material in which no pre-colored masterbatch is used. The material has a highly saturated yellow-green color and can avoid significant discoloration of yellow-green organic pigments under light conditions. The present invention can achieve good dispersion of pigments in a system without pretreatment of the pigments in the earlier stage, resulting in few pigment spots on the surface of the prepared material. The present invention can be applied to the manufacturing of food contact products and household appliances.

This invention relates to the field of spray drying technology, and more particularly to a spray dryer for enzymatic powdered oil processing. The dryer includes a shell, with a raw material box for storing powdered oil materials fixedly connected to the side wall of the shell. A conduit is fixedly connected to the top of the raw material box, and a pump body is fixedly connected to the top end of the conduit. A spray drying mechanism is located at the center of the top of the shell, and the end of the pump body's suction pipe extends into the interior of the spray drying mechanism. This invention utilizes a flexible inner cylinder within the drying tower to vibrate and dislodge materials adhering to the inner wall. Simultaneously, the centrifugal force generated by the high-speed rotation of the conical column drives the spring rod and movable push rod to continuously rotate along the inner wall of the annular limiting groove, achieving a squeezing and collision effect between the movable push rod and the elastic limiting block. This effectively dislodges the materials adhering to the inner wall, allowing the materials to fully contact the hot air for drying, improving the drying effect and ensuring the quality of the prepared materials.

The application discloses a kind of Pd single atom modified two-dimensional WO3 Nanosheet for hydrogen rapid detection under high humidity, preparation method and application, the material is synthesized by electrostatic assembly method, using chelating agent to the surface modification of WO3 Nanosheet, subsequently join Pd species, cleverly utilize the electrostatic interaction between Pd species and WO3 surface, so that the migration of Pd species in the prepared material can be effectively controlled when high temperature treatment, finally obtain the Pd single atom modified two-dimensional WO3 Nanosheet material for hydrogen rapid detection under high humidity.The sample prepared by the application improves the selectivity and sensing stability to hydrogen, even under high humidity conditions (90%RH), 20ppm hydrogen still has good gas sensitive sensing performance (2250) at working temperature of 100 DEG C.

The invention discloses a strong-acid-corrosion-resistant carbon-loaded platinoid all-alloy nano material and a preparation method thereof, and relates to the technical field of new energy materials. The preparation method of the carbon-loaded platinoid all-alloy nano material comprises the following steps: dispersing a carbon carrier in a solvent, adding platinum and copper precursors, dispersing, and adsorbing at constant temperature to obtain a suspension mixed solution; drying by distillation, drying and grinding to obtain a solid compound; calcining in an inert atmosphere, and cooling to obtain a carbon-supported platinoid material; and carrying out strong acid corrosion treatment, washing, drying and grinding to obtain the strong acid corrosion resistant carbon-loaded platinoid all-alloy nano material. The prepared material can keep the crystal structure stable in a strong acid environment and has excellent acid corrosion resistance, and the platinum-copper nano material takes platinum as a solvent and copper as a solute to form a complete alloy phase with the atomic ratio of copper to platinum being greater than or equal to 1: 1. When the material is used as an oxygen reduction catalyst, the atom utilization rate of platinum is high, and meanwhile, the oxygen reduction reaction catalytic activity and long-term stability of the material are remarkably improved.

The application discloses a kind of FeCoNi nanoparticle loaded yeast-derived carbon composite wave-absorbing materials and preparation method thereof.The method uses yeast as biomass carbon source, and yeast-derived carbon is obtained by hydrothermal carbonization;Then, the three-metal precursor salt (Fe2+, Co2+, Ni2+) is dissolved in the solvent according to a certain mass ratio with yeast-derived carbon, and FeCoNi nanoparticles are in-situ loaded on the surface of yeast-derived carbon by hydrothermal impregnation method, and the composite wave-absorbing material is obtained after drying and inert atmosphere heat treatment.The FeCoNi nanoparticles in the obtained material are uniformly dispersed on the surface of carbon material, and the synergistic effect of dielectric loss and magnetic loss is utilized to achieve excellent electromagnetic wave absorption performance.The method is simple, low in cost, and requires small equipment, and the prepared material is environmentally friendly, sustainable, and has strong controllability, etc., and is suitable for radar stealth field.

The application relates to a breathable rubber material for protecting harmful chemical reagents and a preparation method and application thereof, and belongs to the technical field of harmful chemical reagent protection materials. The breathable rubber material for protecting harmful chemical reagents provided by the application comprises a protection layer, an adsorption layer and a close-fitting layer which are sequentially connected and are bonded through hot melt glue between two adjacent layers; the adsorption layer comprises, in terms of weight fractions, 45-75 parts of rubber latex, 30-50 parts of adsorption particles, 0.5-2.5 parts of an anti-aging agent, 0.5-3 parts of sulfur, 0.5-5 parts of zinc oxide, 0.1-3 parts of a vulcanization accelerator, 0.1-1 part of an alkaline pH regulator and 0.01-0.1 part of a stabilizer. The adsorption layer of the breathable rubber material adopts rubber aerogel loaded adsorption particles, and is combined with the protection layer and the close-fitting layer, so that the prepared material is more excellent in breathability, good in adsorption performance and resistant to rubbing and machine washing, the breathability, chemical reagent protection performance and practicability of the rubber protection material are effectively improved, and the breathable rubber material can be widely applied to the field of protective clothing.

The application relates to the technical field of wave-absorbing materials, in particular to a wide-band calcium ferrite wave-absorbing material and a preparation method and application thereof. 1.8 La 0.2‑x Ce x Fe2O5, wherein 0<=x<0.14. The application solves the problems of narrow absorption frequency band and low efficiency of the oxide wave-absorbing material by adjusting the composition and dielectric properties of the material through La and Ce double-element co-doping, and the prepared material has the advantages of wide absorption frequency band and high absorption intensity.

The application discloses a method for preparing sodium ferrous silicate based on differential scanning calorimetry data and determining step-by-step calcination parameters, relates to the technical field of secondary batteries (sodium ion batteries), and aims to provide a step-by-step calcination preparation method for sodium ferrous silicate, a positive electrode material of a sodium ion battery. The method is based on data such as a scanning rate, an endothermic enthalpy, a number of endothermic peaks and start and end temperatures provided by DSC testing of raw material precursors, and proposes parameters such as temperature and time length of step-by-step calcination. The method has the advantages of reasonable steps, strong pertinence, efficient reaction and flexibility. The method does not require a protective atmosphere, is simple to operate and easy to control, and the prepared material is less agglomerated and less impure, so that the development and application of sodium ferrous silicate are facilitated.

The application belongs to the field of sodium ion battery materials, and particularly relates to a preparation method of biomass-based hard carbon active material. Biomass is pretreated by acid or alkali to obtain pretreated biomass, and then first-stage carbonization treatment is carried out to obtain first-stage carbon material. The first-stage carbon material is dispersed in a modification liquid containing reinforcing agent A and reinforcing agent B, and is modified under mechanical reinforcement, and then solid-liquid separation is carried out to obtain modified material. The reinforcing agent A is a compound containing at least one element of N, P and S. The reinforcing agent B is a carbonate source capable of providing carbonate ions. The modified material is subjected to second-stage carbonization to obtain the hard carbon active material. The application also includes the material prepared by the preparation method and the application of the material in sodium ion batteries. The technical scheme of the application has excellent universality, and can improve the fast charging and low-temperature performance of the prepared material.

The application provides a silicon-oxygen material with controllable surface oxygen components, a preparation method thereof and application thereof in lithium ion batteries, and belongs to the technical field of materials. The silicon-oxygen material is obtained by molten salt etching of a silicon alloy phase material. The preparation method is as follows: a molten salt system with a specific composition is kept at a suitable temperature for heat preservation etching together with the silicon alloy phase material, and after washing, separation and drying, a two-dimensional silicon-oxygen material with an accurately controllable surface oxygen component content can be obtained. By adjusting the composition (cations and their ratio) of the molten salt system, the surface chemical activity of the silicon-based material in the etching process can be effectively adjusted, and then the process of introducing oxygen to the surface and the accurate control of the final oxygen component content can be realized. Through this method, the structure-activity relationship between the surface oxygen component of the silicon-oxygen material and the electrochemical performance thereof can be systematically explored and established. The method has the advantages of strong universality, simple process, low temperature and low energy consumption, the prepared material has a sheet structure, and is suitable for negative electrode materials of high-performance lithium ion batteries.

The application discloses a preparation method and application of high-stable shaped hydrotalcite and derived composite metal oxide. The application obtains high-purity hydrotalcite powder by using a clean process technology, and then prepares a series of high-stable shaped hydrotalcite and derived composite metal oxide by introducing a low-concentration high-molecular stabilizer in a shaping process, optimizing process parameters such as a peptizing agent concentration, a kneading paste and a quick-release powder ratio, a water powder ratio, a hydrotalcite adding amount and the like by using a granulation continuous manufacturing technology. The application solves the problems of easy generation of byproduct impurities, low shaping strength, small specific surface and poor stability in the preparation process of the hydrotalcite and the derived composite metal oxide. The preparation process is simple, the prepared material has a higher specific surface and excellent compression crushing strength, and has good structure stability in a reaction process without obvious powder dropping and dissolving. The material can be applied to important environmental chemical industry, petroleum chemical industry and fine chemical industry processes and is easy to recycle and reuse.

The present application relates to the technical field of metal plastic working, in particular to a high-strength 7xxx series aluminum alloy coil profile for consumer electronic products and a preparation method and application thereof. The chemical composition of the aluminum alloy coil profile is as follows: Zn: 6.2-8.2%, Mg: 2.0-2.8%, Cu: 0.1-0.5%, Mn: 0.01-0.05%, Cr: 0.01-0.05%, Zr: 0.08-0.20%, Y: 0.10-0.25%, Si: ≤0.05%, Fe: ≤0.08%, and the rest is Al and inevitable impurities. The present application solves the problems of poor welding performance, large color difference on the anodized surface, insufficient brightness and low yield strength of the existing 7xxx series aluminum alloy by optimizing the alloy component ratio and cooperating with the customized whole-process process. The prepared material has excellent mechanical properties, the yield strength is more than 550 MPa, the welding performance is excellent, the surface after anodization is high in brightness and uniform, and the processing adaptability is good. The coil profile can be widely applied to appearance parts of consumer electronic products such as smart phones and smart wearable devices, and meets the needs of product lightness and high performance.

The application provides a Ti3C2T x Ag composite particle reinforced copper-based self-lubricating material and a preparation method thereof, and relates to the technical field of metal matrix composite materials. The method comprises the following steps: etching Ti3AlC2 powder to obtain multilayer Ti3C2T x particles; then, silver particles are plated on the surfaces of the Ti3C2T x particles by a chemical plating process to obtain Ti3C2T x Ag composite particles; and finally, the composite particles are mixed with copper-based powder, and the mixture is formed and sintered by a powder metallurgy process to obtain Ti3C2T x Ag composite particle reinforced copper-based self-lubricating material. The application solves the problems of easy agglomeration of Ti3C2T x and silver particles in the matrix and uneven dispersion by constructing a core-shell structure of the reinforcing phase, realizes lubrication synergy of the two at different temperatures, and has the advantages of simple operation, economy, good repeatability, excellent tribological performance of the prepared material, and widened application of copper-based composite materials.

The application provides a preparation method of graphite mixed with hard carbon, and comprises the following steps: preparing a hard carbon precursor powder, crushing the hard carbon precursor into micron-level particles, cleaning the hard carbon precursor particles with anhydrous ethanol, and then drying; pressing the obtained hard carbon precursor powder into a sheet through a tablet press and continuously applying a first pressure; taking the prepared hard carbon sheet as a sandwich layer, and stacking the layers in the order of graphite block-hard carbon layer-graphite block; applying a second pressure to the prepared stacked material; carbonizing the prepared material under the protection of N2 to obtain a graphite-hard carbon-graphite laminated composite material; and crushing the carbonized material to obtain powder particles. The application realizes the expansion of the interlayer spacing of the composite material through the laminated mixed structure, thereby reducing the resistance of lithium ions during embedding and de-embedding, improving the kinetic performance, and realizing the fast charging performance.

The application belongs to the technical field of nano inorganic materials, and relates to a universal preparation method of two-dimensional mesoporous nitrogen-doped carbon composite materials. A positively charged chitosan oligosaccharide and a negatively charged SiO2 nanosphere dispersion liquid are uniformly mixed to obtain a mixed liquid, then an aqueous solution of two-dimensional nanosheets is added under stirring, and after room temperature stirring, freeze-drying, high-temperature treatment in an inert atmosphere and template removal, the two-dimensional mesoporous nitrogen-doped carbon composite material is obtained. The preparation method provided by the application is simple, convenient to operate, has few steps and low cost; the method is universal, different two-dimensional mesoporous nitrogen-doped carbon composite materials can be obtained by replacing different two-dimensional substrates. Moreover, the method has good controllability and repeatability, and can realize accurate control of mesoporous pore size and nanosheet thickness; the prepared material also has good electrochemical performance.

The application provides a melamine / ammonium polyphosphate synergistic flame-retardant flexible composite phase change material and a preparation method and application thereof, and the preparation method comprises the following steps: heating and melting paraffin wax, adding olefin block copolymer, then adding expanded graphite, melamine and ammonium polyphosphate to form a synergistic flame-retardant system, and preparing the composite phase change material through a melt blending process.The prepared composite phase change material simultaneously realizes the comprehensive performance of anti-leakage, heat-induced flexibility, high thermal conductivity and high efficiency of flame retardation, and the thermal conductivity is up to 1.12 W·m ‑1 ·K ‑1 , and the phase change enthalpy is up to 114.5 J / g; the preparation process of the application is simple and the conditions are controllable, the prepared material considers the energy storage density, thermal conductivity efficiency, flexibility adaptability and flame-retardant safety, is suitable for efficient thermal management under high rate working conditions of lithium batteries, can effectively inhibit the temperature rise of the battery and reduce the risk of thermal runaway, and has a good engineering application prospect.

This invention belongs to the field of new material preparation technology, specifically disclosing a high-wear-resistant rubber track material and its preparation method. The high-wear-resistant rubber track material, by weight, is prepared from the following raw materials: 60-100 parts nitrile rubber, 20-50 parts NV rubber-plastic alloy, 30-80 parts silica, 10-30 parts kaolin, 5-20 parts dioctyl terephthalate, 1-8 parts zinc oxide, 0.5-2 parts stearic acid, 0.5-5 parts antioxidant, 0.5-2 parts microcrystalline wax, 1-5 parts PEG4000, 0.5-5 parts coupling agent, 0.5-2 parts vulcanizing agent, and 2-8 parts accelerator. The rubber track material provided by this invention is mainly composed of NBR+PVC blend material. By combining functional additives and optimizing the preparation process, the prepared material is suitable for making tracks, meeting the requirements of wear resistance, no black mark, and excellent overall performance.

This invention belongs to the field of water treatment and environmental remediation technology, and discloses a method for removing uranium-rich defect-laden fluorine-doped cobalt tetroxide, its preparation, and its application. Fluorine is in-situ doped in bulk through a hydrothermal reaction. After calcination, crystalline bulk fluorine-doped cobalt tetroxide is obtained. Then, low-temperature argon plasma bombardment is applied to create abundant oxygen vacancy defects on the material surface without damaging the bulk crystal structure. The combined process of this invention simultaneously achieves a significant improvement in the material's conductivity and precise enrichment of highly active surface sites. It exhibits excellent conductivity and catalytic activity, achieving a maximum uranium removal efficiency of 99.2% in water. Its performance is stable within the pH range of 3-9, and the removal efficiency remains at 97.4% after 10 cycles. The preparation process of this invention is simple, controllable, and low-cost. The prepared material is suitable for the efficient purification of radioactive water bodies such as uranium-containing wastewater and uranium-containing groundwater from the nuclear industry, and has broad prospects for industrial application.

This invention belongs to the field of functional materials and electromagnetic wave absorbing materials, specifically disclosing a bimagnetic metal-carbon nanocomposite microwave absorbing material and its preparation method. Using a bimetallic Prussian blue analogue as a precursor, this invention prepares the bimagnetic metal-carbon nanocomposite microwave absorbing material through Joule heating treatment. Addressing the problems of easy agglomeration of metal particles, limited interface quantity, and complex preparation processes in existing technologies, this invention employs Joule heating technology to effectively inhibit the agglomeration and growth of metal nanoparticles at high temperatures, ensuring uniform dispersion of metal nanoparticles within a carbon matrix and forming abundant heterogeneous interfaces. The preparation method of this invention is simple, has a short cycle time, and low cost. The prepared material exhibits small metal particle size and abundant interface structures, demonstrating excellent microwave absorption performance in the 2-18 GHz frequency range, with a minimum reflection loss of -49.82 dB and an effective absorption bandwidth exceeding 7.0 GHz.

This invention relates to an AgNPs-Bi3NbTiO9 composite SERS substrate material, its preparation method, and its application in the detection of organic molecules, belonging to the field of surface-enhanced Raman spectroscopy and functional composite materials technology. This invention prepares a Bi3NbTiO9 support via a molten salt method and combines it with an ascorbic acid in-situ reduction strategy to uniformly load silver nanoparticles onto its surface, achieving a synergistic effect of plasma enhancement and interfacial charge transfer. The prepared material exhibits good structural stability and a high-density "hot spot" distribution, demonstrating excellent Raman enhancement performance for 4-mercaptobenzoic acid molecules. Experimental results show that this composite substrate has stronger signal enhancement and better uniformity than a single Ag substrate, achieving highly sensitive detection of target molecules at the ppm level in river water. The material preparation method described in this invention is simple, reproducible, and suitable for the rapid detection of trace organic pollutants in environmental water bodies.

The present application relates to the technical field of micro-nano functional material preparation, in particular to a silicon-iron composite micro-nano reduction functional material large-scale production method and system. The present application realizes large-scale production through the steps of raw material pretreatment, quantitative conveying, micro-nano shearing grinding under nitrogen protection, water cooling temperature control regulation, slurry internal circulation homogenization, etc. The designed production system includes raw material bin, quantitative feeding unit, micro-nano particle shearing grinding unit, and matched mill water cooling temperature control unit, nitrogen protection unit and slurry internal circulation unit. The present application solves the problems of low production capacity, difficulty in accurately controlling particle size, material oxidation and deterioration, and unstable product performance in the prior art. The prepared material has iron content > 70%, particle size d50 < 300 nm (image counting method), and system single-day production capacity > 20 tons. The material has the advantages of high reduction activity, strong production stability, and controllable cost, and can be widely applied in the fields of environmental governance, catalytic reaction, etc., and has significant industrialization value.

This invention discloses a modified calcium hydroxide-based piezoelectric catalytic material, its preparation method, and its applications, belonging to the field of inorganic non-metallic material preparation technology. The material is prepared by introducing a sulfur-containing surfactant during the synthesis of calcium hydroxide. The sulfur element in the material exists in the form of -SO3 groups and possesses piezoelectric catalytic activity. This method is mild and simple to operate, enabling intrinsically piezoelectric non-pyroelectric Ca(OH)2 to acquire highly efficient piezoelectric catalytic activity. This enriches the types of piezoelectric catalytic materials, fills the research gap in calcium-based piezoelectric catalytic materials, and has significant theoretical and applied value. The prepared material has multiple advantages, including high activity, good stability, strong environmental adaptability, low raw material cost, and environmentally friendly sources, showing broad application prospects in environmental catalysis fields such as wastewater treatment.