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111 results about "Micro nanoparticles" patented technology

Preparation method of in-situ micro-nano Al2O3 particle reinforced aluminum-based composite material

PendingCN120041711AMicro nanoAl powder
The invention relates to an aluminum-based composite material, in particular to a preparation method of an in-situ micro-nano Al2O3 particle reinforced aluminum-based composite material. The preparation method comprises the following steps: carrying out ball-milling pre-dispersion on silica powder, calcined kaolin and aluminum powder according to a specified ratio, stirring an Al-Si alloy melt at a semi-solid temperature, adding ball-milling mixed powder, heating to a temperature above an Al-Si alloy liquidus, dispersing reactant powder by using a blade-tray integrated stirring device, heating, carrying out heat preservation, carrying out heat preservation, and carrying out vacuum drying to obtain the aluminum-silicon alloy. And reacting to generate in-situ micro-nano Al2O3 particles, cooling, supplementing alloy elements, refining, and pouring to obtain the in-situ micro-nano Al2O3 particle reinforced composite material. According to the blade-tray integrated stirring device, mechanical stirring and the rolling and impacting effects of the ceramic balls are combined, the problem of one-time dispersion of micro-nano reactant powder is effectively solved, meanwhile, passivation of edges and corners of micron particles is achieved, and the comprehensive performance of in-situ particle reinforced aluminum matrix composites is improved.
Owner:JIANGSU UNIV

Micro-nano particle reinforced nickel-based ultralow-melting-point wear-resistant brazing filler metal as well as preparation method and application thereof

The invention belongs to the technical field of brazing materials, and particularly relates to micro-nano particle reinforced nickel-based ultralow-melting-point wear-resistant brazing filler metal and a preparation method and application thereof. The invention provides micro-nano particle reinforced nickel-based ultralow-melting-point wear-resistant brazing filler metal. The micro-nano particle reinforced nickel-based ultralow-melting-point wear-resistant brazing filler metal comprises 94-99 parts of ultralow-melting-point nickel-based brazing filler metal and 1-6 parts of micro-nano particles. The ultralow-melting-point nickel-based brazing filler metal contains B, Si, In, Sn and Cu elements at the same time, and the melting temperature of the brazing filler metal can be cooperatively reduced; and meanwhile, the micro-nano particles are added, so that the strengthening and abrasion increasing effects on the nickel-based brazing filler metal can be effectively guaranteed, and meanwhile the flowability of the brazing filler metal is not affected. Therefore, through component design of the nickel-based brazing filler metal and synergistic cooperation of the micro-nano particles, the melting point of the brazing filler metal can be remarkably reduced, the brazing filler metal can be endowed with excellent hardness and wear resistance, and the technical bottlenecks that traditional nickel-based brazing filler metal is high in melting temperature and poor in wear resistance and brazed diamond is subjected to thermal damage are solved; and the method has a wide application prospect in brazing of diamond tools.
Owner:HENAN MECHANICAL & ELECTRICAL VOCATIONAL COLLEGE

Preparation method and application of composite piezoelectric catalytic material NaNbO3-BiFeO3 for rapidly degrading antibiotics

The invention relates to a preparation method and application of a composite piezoelectric catalytic material NaNbO3-coated BiFeO3 for rapidly degrading antibiotics, NaNbO3 is flaky crystal grains with [001] crystallographic orientation prepared by a two-step molten salt method, and BiFeO3 is micro-nano particles prepared by a coprecipitation method. Composite micro-nano BiFeO3 powder and [001] oriented NaNbO3 flaky grains form a heterojunction, conversion of mechanical energy and electric energy of the material is achieved under the ultrasonic vibration condition, inductive charges are generated on the surface of the material, and photon-generated carriers move reversely under driving of a built-in electric field. According to the invention, the piezoelectric catalytic degradation capability of the BiFeO3 and NaNbO3 composite piezoelectric catalytic materials with different proportions on four antibiotics, namely oxytetracycline, levofloxacin, carbamazepine and paracetamol in different time periods is researched. When the mass ratio of the BiFeO3 to the NaNbO3 composite material is 1: 3, the oxytetracycline degradation rate within 30 min can reach 78.2%, the oxytetracycline degradation rate within 120 min can reach 91.8%, and the piezoelectric electro-catalysis characteristic is rapid and efficient. The method disclosed by the invention has important significance in developing a high-efficiency piezoelectric catalyst for degrading antibiotics.
Owner:XINJIANG AGRI UNIV

High-toughness antibacterial hemostatic chitosan hydrogel dressing and preparation method thereof

The invention belongs to the technical field of medical materials, and relates to a high-toughness antibacterial hemostatic chitosan hydrogel dressing and a preparation method thereof. According to the invention, vinyl rare earth cerium oxide micro-nano particles are introduced into a polymer network as a cross-linking agent, the chitosan hydrogel dressing with excellent mechanical properties and antibacterial and hemostatic functions is successfully constructed, when the micro-nano particles are subjected to external stress, energy can be dissipated through mechanisms such as deformation, unwrapping, chain slippage and the like, so that the chitosan hydrogel dressing is prepared. Therefore, the hydrogel dressing is endowed with excellent strength, toughness and cyclic load resistance.
Owner:NINGBO MEDSUN MEDICAL

Metal sulfide nanoparticle slow-release activator for sewage treatment and preparation method of metal sulfide nanoparticle slow-release activator

The invention relates to the technical field of sewage treatment, in particular to a metal sulfide nanoparticle slow-release activator for sewage treatment and a preparation method of the metal sulfide nanoparticle slow-release activator for sewage treatment. The surface of the core layer is coated with the porous silicon dioxide membrane shell layer; the citric acid modifier is loaded on a core-shell interface; according to the invention, metal sulfide (such as FeS, MoS2, WS2 and the like) micro-nano particles are used as a solid-phase slow-release activator, so that the core problem of a traditional homogeneous activation system is radically solved. Firstly, the metal sulfide exists in the form of a solid phase and can directly contact and react with permanganate without an additional dissolving step, so that the problem of complicated process operation caused by poor solubility of activating agents such as sulfite is thoroughly avoided, and the process of reclaimed water treatment is simplified. The problem of poor continuous oxidation effect of a traditional homogeneous system is thoroughly solved.
Owner:SHANDONG ZHENGYUAN YEDA TECH CO LTD

Dispersion distribution method for micro-nano multi-scale mixed SiC particle reinforced phase in aluminum matrix composite and composite

The invention discloses a dispersion distribution method for a micro-nano multi-scale mixed SiC particle reinforced phase in an aluminum-based composite material and the composite material, and relates to the technical field of metal-based composite material preparation. The method comprises the following steps: firstly, carrying out ultrasonic cleaning, ultrasonication and two-stage high-temperature oxidation treatment on SiC particles, and generating an oxidation film on the surfaces of the particles; ball-milling and mixing the treated micron and nano SiC particles and micron pure magnesium particles according to a specific proportion, and pressing into a precast block; then preparing an aluminum alloy melt, cooling to a solid-liquid two-phase region, carrying out semi-solid stirring, and adding the preheated precast block; and finally, raising the temperature to be above a liquidus, rewarming, stirring and molding by casting. Through the synergistic effect of ultrasonic physical dispersion, high-temperature oxidation surface modification and magnesium-induced semi-solid stirring, the problems that micro-nano particles are prone to agglomeration, wettability is poor and interface reaction is difficult to control are effectively solved, multi-scale uniform dispersion distribution of a reinforced phase in an aluminum matrix is achieved, and the comprehensive performance of the composite material is remarkably improved.
Owner:QINGHAI UNIVERSITY

High-performance super-hydrophobic coating

The invention discloses a high-performance super-hydrophobic coating, and relates to the technical field of coating preparation. The high-performance super-hydrophobic coating comprises a composite resin matrix composed of polyurethane and polyethersulfone, and zinc selenide nanoparticles and hydrophobic modified inorganic micro-nanoparticles used for constructing a super-hydrophobic surface are dispersed in the composite resin matrix. Polyether sulfone has good tolerance, can significantly improve the thermal stability and structural strength of the coating in a high-temperature environment, and can be blended and crosslinked with a polyurethane network to form a more stable multiphase composite system, enhance the crack resistance and peel strength of the coating, and effectively improve the adhesive force; the zinc selenide nanoparticles can effectively absorb ultraviolet rays and protect the organic resin matrix from being damaged by ultraviolet radiation. The high-performance super-hydrophobic coating provided by the invention is suitable for outdoor severe environments with high temperature, strong ultraviolet radiation and chemical corrosion risk, and long-term stable protection can be provided for outdoor equipment by coating the surface of the outdoor equipment with the high-performance super-hydrophobic coating to form a protective coating.
Owner:ZHUHAI POWER SUPPLY BUREAU GUANGDONG POWER GIRD CO

Preparation of zinc zoledronate micro-nanoparticle adjuvant and use thereof as vaccine adjuvant

Disclosed is a zinc zoledronate micro-nanoparticle adjuvant, which contains zinc and zoledronic acid and optionally contains a phosphate and aluminum. The preparation method therefor comprises performing mixed precipitation on a soluble salt solution containing zinc ions, zoledronic acid, and sodium hydroxide. The adjuvant can be used to prepare vaccines, etc.
Owner:XIAMEN UNIV +1

Micro-nano geotechnical robot geological disaster multi-source information fusion early warning system

The invention discloses a micro-nano rock-soil robot geological disaster multi-source information fusion early warning system which is characterized by comprising a micro-nano rock-soil robot cluster, a wireless energy supply system, electromagnetic modified micro-nano particles, a data transmission and control module, an injection deployment system, a main control unit, an information fusion analysis module and an early warning module. The early warning system can realize multi-dimensional and multi-scale information monitoring of geological disasters, has high timeliness, accuracy and reliability, is suitable for application scenes of landslide, slope collapse, tunnel deformation, tailing dam safety monitoring and the like, and provides technical support for early warning and risk assessment of geological disasters.
Owner:WUHAN UNIV

Double-barrier self-lubricating anti-coking composite coating and preparation method thereof

The invention provides a double-barrier self-lubricating anti-coking composite coating and a preparation method thereof, and belongs to the technical field of boiler anti-coking coatings. The composite coating comprises a bottom layer and a surface layer, the bottom layer is of a porous structure, and the bottom layer is made of an alloy material; the surface layer comprises a coating layer located on the bottom layer and an embedded layer embedded in the porous structure of the bottom layer, and the surface layer is made of a micro-nano ceramic composite material. The porous bottom layer coating provides implantation for the surface layer ceramic particles, the micro-nano particles of the surface layer can be physically embedded into pores of the bottom layer porous material, the binding force between the surface layer ceramic particles and a base body is increased, the service life of the coating is prolonged, and a microcosmic composite material coating interface is formed by the multi-element corrosion-resistant alloy and the micro-nano ceramic material.
Owner:XIAN THERMAL POWER RES INST CO LTD

Mask preparation method and patterning method

The embodiment of the invention provides a mask preparation method and a patterning method. The mask preparation method comprises the following steps: providing a substrate, a template and micro-nano particles; assembling micro-nano particles on the first surface or the second surface to form a micro-nano particle layer; the template and the substrate are stacked, so that the micro-nano particle layer is located between the first surface and the second surface; pressing the template and the substrate; the template is separated from the substrate, so that a patterned micro-nano particle array located on the substrate is obtained, and the pattern of the micro-nano particle array is consistent with the preset transfer printing pattern; and modifying the micro-nano particle array to obtain a mask layer which is tightly combined with the substrate. According to the mask preparation method and the patterning method disclosed by the invention, the mask is prepared by adopting the micro-nano particles, and the patterning transfer printing is carried out by adopting the template, so that the mask preparation method and the patterning method do not depend on complicated light paths and equipment, have the advantages of low cost, high preparation speed and low equipment requirement, and can replace a traditional photoresist mask to a certain extent.
Owner:TSINGHUA UNIVERSITY

In-situ doped ZnO paper-based insulating material and preparation method thereof

The invention discloses an in-situ doped ZnO paper-based insulating material and a preparation method thereof, and belongs to the technical field of paper-based special materials in paper industry. The method disclosed by the invention comprises the following steps: mixing and stirring zinc chloride and water to obtain a zinc chloride hydrated eutectic solvent; then soaking the porous base paper in a zinc chloride hydrated deep-eutectic solvent for swelling treatment to obtain gelatinized base paper; immersing the gelatinized raw paper into an ethanol / water anti-solvent system for regeneration treatment to obtain regenerated raw paper; then dipping the regenerated raw paper in alkali liquor for in-situ deposition treatment to obtain raw paper with ZnO micro-nano particles loaded and doped on the surface; and performing post-treatment on the body paper with the surface loaded and doped with the ZnO micro-nano particles to obtain the in-situ doped ZnO paper-based insulating material. According to the method disclosed by the invention, in-situ doping of the ZnO micro-nano particles is successfully realized in the densified base paper, and the dielectric property is further remarkably improved by cooperating with the densification effect.
Owner:SHAANXI UNIV OF SCI & TECH

A foam alkali-activated cementitious material and a method of making the same

The application provides a foamed alkali-activated cementitious material, which is composed of an intermediate layer and surface layers covering the upper and lower surfaces of the intermediate layer, and the intermediate layer and the surface layers comprise the following raw materials: 30-50 parts by mass of blast furnace slag, 12-18 parts by mass of low-calcium fly ash, 9-15 parts by mass of alkaline magnesium slag, 10-15 parts by mass of alkali activator, 6-8 parts by mass of foaming agent and 3-5 parts by mass of foam stabilizer; the surface layer further comprises 1.5-5 parts by mass of functional catalyst, and the functional catalyst is gel-like micro-nano TiO2 particles. The application utilizes fly ash, magnesium slag and slag and other types of solid waste to prepare building materials with the ability to degrade formaldehyde. Compared with traditional porous foamed materials, the foamed alkali-activated cementitious material prepared by using aluminum powder as a foaming agent has the advantage of utilizing industrial by-products, and the excess aluminum powder not only produces a dense and uniform pore structure, but also is conducive to the adsorption of formaldehyde gas and the improvement of mechanical strength.
Owner:CHINA UNIV OF GEOSCIENCES (BEIJING)

Silicon carbide / molybdenum alloy gap filling and low-temperature connection process based on metal slurry

The invention discloses a silicon carbide / molybdenum alloy gap filling and low-temperature connection process based on metal slurry, and belongs to the field of material connection. The nickel-based micro-nano slurry is composed of nickel-based micro-nano particles and an organic auxiliary agent, and is formed after vacuum stirring and defoaming. The nickel-based micro-nano particles comprise Ni nano particles, NiCr micro particles and Si nano particles. The method comprises the following steps: firstly, uniformly coating nickel-based micro-nano slurry on a silicon carbide / molybdenum alloy connecting surface; secondly, vacuum sintering is conducted in a tubular furnace, the silicon carbide / molybdenum alloy connector is obtained, and the connector has high strength and heat conductivity. The Si nanoparticles are added, so that the wettability of the nickel-based micro-nano slurry and a silicon carbide base material is enhanced, a connection joint obtained after sintering has higher strength and thermal conductivity, the brush coating process can be adopted to cope with various special-shaped structures, connection gaps of the special-shaped structures are filled compactly, and the connection joint with excellent mechanical property and thermal property is obtained.
Owner:XIAMEN UNIV +1

Super-hydrophobic composite hydrogel as well as gradient assembly preparation method and application thereof

PendingCN121045620ACoatingsCelluloseMeth-
The invention belongs to the technical field of super-hydrophobic gel, and particularly relates to super-hydrophobic composite hydrogel as well as a gradient assembly preparation method and application thereof. The method comprises the following steps: (1) copolymerizing isopropyl acrylamide, acrylamide, methyl methacrylate and hydroxypropyl methyl cellulose to prepare a hydrogel substrate, and then immersing the substrate into a solution containing poly (4-bromomethyl styrene) to carry out n-alkylation surface modification; (2), SiO2 (at) PDA micro-nano particle powder and perfluorosilane modified halloysite nanotube powder are prepared respectively; and (3) stretching the modified hydrogel substrate, sequentially coating the SiO2 (at) PDA micro-nano particles on the surface of the hydrogel substrate to form a middle layer, then coating the perfluorosilane modified halloysite nanotube powder, and carrying out rolling treatment to form an outer surface layer, thereby finally obtaining the super-hydrophobic composite hydrogel.
Owner:YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST

Lignin-based pesticide controlled release micro-nanoparticles with multiple stimuli response and preparation method thereof

The present application belongs to the technical field of agricultural bio-based slow-release carriers and pesticide formulations, and relates to a kind of lignin-based pesticide controlled-release micro-nanoparticles with multiple stimuli response and a preparation method thereof, lignin and hydrochloric acid dopamine are dissolved in buffer solution in proportion, an oxidizing agent is added thereto, stirred and reacted to obtain a lignin-polydopamine composite solution, which is purified by dialysis in water, dried to obtain a lignin-polydopamine solid powder; the lignin-polydopamine solid powder and abamectin are mixed in an organic solvent in a mass ratio of 1-5:1, then water is added in portions while stirring, the polarity of the system is changed, and the lignin-polydopamine micro-nanoparticle drug-loaded particles loaded with abamectin are precipitated, which are dried to obtain the present application. The abamectin delivery system has multiple environmental responsiveness, long-acting leaf adhesion function and controllable release characteristics.
Owner:QILU UNIVERSITY OF TECHNOLOGY (SHANDONG ACADEMY OF SCIENCES)

Catalytic membrane capable of repeatedly self-growing active layer as well as preparation method and application of catalytic membrane

The invention discloses a catalytic membrane capable of repeatedly self-growing an active layer. A flaky solid of a layered double hydroxide micro / nano active layer is self-grown in situ on a geopolymer inorganic membrane; the invention also discloses a preparation method and application of the catalytic membrane. According to the catalytic membrane, the layered double hydroxide active layer with the micro / nano structure is subjected to in-situ hydro-thermal synthesis, the multifunctional catalytic membrane with the repeatable self-growing active layer is obtained, the repeatable and self-growing active layer can be achieved for multiple times, and micro / nano particles are not prone to falling off from a carrier in the using process.
Owner:HENAN BUILDING MATERIALS RES & DESIGN LNSTITUTE CO LTD +2

A double barrier self-lubricating anti-coking composite coating and a preparation method thereof

The present disclosure provides a double-barrier self-lubricating anti-coking composite coating and a preparation method thereof, and belongs to the technical field of boiler anti-coking coating. The composite coating comprises a bottom layer and a surface layer. The bottom layer is of a porous structure and is formed of an alloy material. The surface layer comprises a cladding layer on the bottom layer and an embedded layer embedded in the porous structure of the bottom layer, and the surface layer is formed of a micro-nano ceramic composite material. The porous bottom layer coating provides a "bedding" for the surface layer ceramic particles. The micro-nano particles of the surface layer can be physically embedded in the pores of the porous material of the bottom layer, thereby increasing the bonding force between the surface layer ceramic particles and the substrate, prolonging the service life of the coating, and forming a micro composite material coating interface by the multi-element corrosion-resistant alloy and the micro-nano ceramic material.
Owner:XIAN THERMAL POWER RES INST CO LTD

Functional nanomaterials based on choline phosphate-cell membrane interaction and applications thereof

The present application relates to the technical field of medicine, in particular to a functional nanomaterial based on choline phosphate-cell membrane interaction and application thereof.The present application modifies manganese mineralized black phosphorus nanomaterial by bio-inspired polymer pGluCP adsorption, which retains the excellent biocompatibility and photothermal performance of BP, and at the same time, pGluCP enhances the 'chassis' effect of the material, captures tumor-related antigens, and can simultaneously capture water-soluble antigens and water-insoluble membrane antigens and form pathogen-like micro-nanoparticles, which is helpful for antigen delivery and APC presentation, and provides a feasible tool for capturing non-water-soluble membrane antigens, which is a major challenge.MnBP and pGluCP synergistically act, and can realize the personalized conversion of autologous tumors to vaccine production and delivery.
Owner:THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL UNIV (GUANGZHOU RESPIRATORY CENT)

Resistance-increasing in-situ gel deep profile control agent and preparation method thereof

The invention belongs to the technical field of oil-gas field development and recovery efficiency improvement, and particularly relates to a resistance-increasing type in-situ gel deep profile control agent and a preparation method thereof. The resistance-increasing type in-situ gel deep profile control agent is prepared from the following raw materials in percentage by weight: 3 to 8 percent of water-soluble functional monomer, 0.5 to 2 percent of functional micro-nano particles, 0.3 to 1 percent of gelling control agent and the balance of water. The profile control agent reacts in a stratum to form three-dimensional network structure gel with functional micro-nano particles as crosslinking nodes, so that the temperature resistance is greatly improved, the dehydration rate at the constant temperature of 120 DEG C for 90 days is lower than 10%, and the profile control agent can be used for deep profile control of oil reservoirs at the high temperature of 120 DEG C.
Owner:CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD +2

Electret film, power generation device, and electronic apparatus

The embodiment of the invention provides an electret film, a power generation device and electronic equipment, and belongs to the technical field of electrets. The electret thin film comprises an electret substrate, a first hole structure and first micro-nano particles. The first pore structure is arranged on the electret substrate and is used for accommodating the first micro-nano particles; at least one surface of the electret substrate is provided with first micro-nano particles. According to the electret film, the power generation device and the electronic equipment provided by the embodiment of the invention, the energy collection efficiency can be improved, so that the endurance time of the electronic equipment is prolonged.
Owner:HUAWEI TECH CO LTD

A method for determining the surface charge density of micro- and nanoparticles

This invention discloses a method for determining the surface charge density of micro / nano particles. The method first uses light scattering technology to determine the critical agglomeration concentration of micro / nano particles at a given electrolyte type and temperature. Then, under this concentration condition, the resultant force of electrostatic repulsion and long-range molecular attraction between particles is calculated, and the particle surface potential under this condition is determined. Finally, the surface charge density of the particles is obtained based on the obtained surface potential. This invention can accurately calculate the surface charge density of micro / nano particles by determining the critical agglomeration concentration using a laser scattering instrument, eliminating the need to separately measure the outer surface area of ​​the particles in a gaseous medium and the number of surface charges in a liquid medium before calculating the surface charge density.
Owner:SOUTHWEST UNIV

Multi-dynamic-bond cross-linked organic silicon resin, multifunctional low-surface-energy anti-icing and deicing coating composition and preparation method of multifunctional low-surface-energy anti-icing and deicing coating composition

The invention provides a multi-dynamic-bond cross-linked organic silicon resin, a multifunctional low-surface-energy anti-icing and deicing coating composition and a preparation method of the multi-dynamic-bond cross-linked organic silicon resin and the multifunctional low-surface-energy anti-icing and deicing coating composition. The finishing paint is also prepared by mixing the organic silicon resin serving as a resin matrix with the modified photo-thermal micro-nano particles. The coating composition can endow a base material with excellent photo-thermal conversion performance and super-hydrophobic performance, does not influence the original mechanical property and use performance of the base material, and can effectively solve the problems of insufficient mechanical stability and poor environmental adaptability of a super-hydrophobic coating in the prior art. And the requirements of fluoride-free environmental protection, stable anti-icing / deicing and long-term service on the coating material are met.
Owner:SICHUAN UNIV

Serum containing encapsulated niaouli essential oil

PCT designated stageWO2025155269A1Cosmetic preparationsToilet preparationsAlternative treatmentMicro nanoparticles
The invention relates to serum containing encapsulated niaouli essential oil. In the preparation of said serum, firstly niaouli essential oil is encapsulated and then the obtained micro / nanoparticles are loaded into the serum carrier system. The serum containing encapsulated niaouli essential oil, which is the subject of the invention, contains olive oil, caprylic / capric triglyceride, cyclopentasiloxane, isopropyl myristate and encapsulated niaoulii essential oil. The serum containing encapsulated niaouli essential oil is used as a new alternative treatment method for eczema treatment.
Owner:ANADOLU UNIVSI +1

Flame-retardant radiation refrigeration film with excellent durability and preparation method thereof

The invention relates to a flame-retardant radiation refrigeration film with excellent durability and a preparation method thereof, the radiation refrigeration film is a layered film with a micro-nano porous structure formed by mutual crosslinking of flame-retardant and weather-resistant resin fibers, and inorganic micro-nano particles are uniformly coated in the flame-retardant and weather-resistant resin fibers. The flame-retardant radiation refrigeration film with excellent durability provided by the invention has excellent radiation refrigeration performance and thermal stability, on one hand, strong molecular vibration in a 8-13-micron wave band region can be provided, the emission capability of an atmospheric window wave band is enhanced, and on the other hand, the inorganic micro-nano particles have efficient sunlight scattering capability, so that the radiation refrigeration film has excellent radiation refrigeration performance and thermal stability. And the emissivity of an atmospheric window wave band can be improved, and the refrigeration performance of the fiber membrane is further enhanced. On the other hand, high stability, including flame retardance, ultraviolet resistance and chemical corrosion resistance, of the fiber skeleton is provided, and the fiber skeleton can be used for a long time in a severe environment and has a good market application prospect.
Owner:WUHAN UNIV OF TECH

Micro-nano particle for composite electroplating and preparation method thereof

PendingCN121317720AGrapheneNanowireGel based
The invention relates to a micro-nano particle for composite electroplating and a preparation method of the micro-nano particle. The micro-nano particle sequentially comprises a microsphere, a gel layer and a nanowire from inside to outside, the nanowires are distributed on the surface of the gel layer; the gel layer comprises pH sensitive gel and / or temperature sensitive gel. According to the method, the gel component is introduced during preparation of the micro-nano particles, and the property of gel is changed by adjusting local environment conditions in the electroplating process on the basis of the sensitive characteristic of the gel material to external environment change, so that the deposition behavior of the micro-nano particles is regulated in real time, and a plating layer is endowed with complex performance; and a new solution is provided for preparation of the high-performance composite electroplated layer.
Owner:AVIC BEIJING INST OF AERONAUTICAL MATERIALS +1

A lignin micro-nanoparticle preparation device based on microflow atomization

ActiveCN224672691UAir pumpPhysical chemistry
The utility model belongs to the field of biomass material processing, for a kind of lignin micro-nano particle preparation device based on micro-flow atomization technology, it include: reaction kettle and install the pneumatic atomization spray head in reaction kettle top, the high-speed stirring paddle is installed in the bottom of reaction kettle, the bottom edge in reaction kettle is equipped with pH sensor;Reaction kettle side is equipped with feed inlet, feed inlet and metering feed pump one are connected by pipeline one, and the bottom of reaction kettle is equipped with discharge outlet with side wall junction;Pneumatic atomization spray head is connected with high-pressure gas transmission pump by pipeline two, and pneumatic atomization spray head is connected with metering feed pump two by pipeline three;Pneumatic atomization spray head, metering feed pump one, metering feed pump two, high-speed stirring paddle, pH sensor, high-pressure gas transmission pump are electrically connected with electric control system module.The technology can achieve lignin dissolution, atomization and particle forming continuous operation, and the obtained micro-nano particle has good monodispersity, high surface activity, low color and other characteristics, which provides an efficient preparation means for the development of bio-based functional materials.
Owner:HUAYAN INT COSMETICS RES INST BAIYUN MEIWAN BAIYUN DISTRICT GUANGZHOU +1

Highly tensile and highly conductive hydrogels with layered structures, their preparation methods and applications

ActiveCN119286001BSensorsDiagnostic recording/measuringStretchable electronicsPolymer science
The application discloses a kind of high tensile high conductive hydrogel with layered structure and its preparation method and application.The method mixes PVA, PEDOT:PSS with EGaIn microparticles, and is prepared by the way of gravity settlement and electrostatic adsorption auxiliary settlement, and the hydrogel with layered structure is obtained.By controlling the proportion of PVA, PEDOT:PSS solution and EGaIn microparticles, the conductive hydrogel with layered structure prepared shows good conductive capacity and mechanical behavior, and can work normally under larger strain and stress conditions, and has wide application prospect in the field of flexible stretchable electronic devices.
Owner:NANJING UNIV OF SCI & TECH

Preparation method of particle-self-supporting coupling oxygen evolution electrode for electrooxidation induction material local phase change

The invention provides a preparation method of a particle-self-supporting coupling oxygen evolution electrode for local phase change of an electrooxidation induced material, which comprises the following steps: firstly, constructing a flaky cobalt structure on the surface of foamed nickel by using an electrochemical deposition technology to form a three-dimensional conductive skeleton with a high specific surface area so as to provide more adsorption sites for subsequent particle loading; meanwhile, hydroxyl generated by surface hydrolysis is used for participating in subsequent reaction; secondly, carboxyl on the surface of the micro-nano particle material and hydroxyl on the surface of the substrate are subjected to a bonding reaction through ultrasonic induction, interaction between the carboxyl and the hydroxyl is enhanced, and loading of the particles on the substrate is achieved; and finally, long-time electrooxidation treatment is carried out on the particle-loaded electrode, the synergistic effect between the particles and the cobalt electroplated layer is excited, interface reaction between the particles and the cobalt electroplated layer is promoted, the microstructure of the material is obviously changed, and a firmer new phase is formed between the particles and the substrate.
Owner:SHAANXI HENGHUI HYDROGEN ENERGY INNOVATION CENT CO LTD +1

Multi-source geological information in-situ intelligent sensing system of micro-nano geotechnical robot

The invention discloses a multi-source geological information in-situ intelligent sensing system of a micro-nano geotechnical robot. The system comprises a micro-nano rock-soil robot cluster, an energy supply unit, electromagnetic modified micro-nano particles, a main control unit and an injection-production system. The micro-nano rock-soil robot is composed of a micro-nano sensor, a power supply, a communication module and a control module, and the sensor can be a temperature sensor, a ground stress sensor, a fluid pressure sensor, a microbial sensor, an ion concentration sensor and a pH value sensor according to monitoring requirements so as to realize monitoring and acquisition of multi-source geological information. And the main control unit processes the monitoring data by using a machine learning technology and comprehensively reconstructs underground information. The system can realize multi-dimensional monitoring of geological information, and promotes research and application in the fields of deep engineering construction, underground resource mining and environmental evaluation.
Owner:WUHAN UNIV