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1080 results about "Nanoparti cles" patented technology

A self-healing optical film and its preparation method

This case relates to a self-healing optical film and its preparation method. The optical film is made by adding a nanoparticle suspension to PET masterbatch as the main material during its melt extrusion process, resulting in a cast sheet. After biaxial stretching, a self-healing coating liquid is coated online, followed by shaping and cooling. The nanoparticle suspension includes nano-titanium oxide, MAH-PET polymer, ATO nanoparticles, and titanate coupling agent. The self-healing coating liquid is produced by core-shell emulsion polymerization, forming a nano-silica hard core and an acrylate functional monomer polymer soft shell. This invention adds the nanoparticle suspension by in-situ feeding in the middle of the extruder, reducing steps, improving dispersion uniformity, and making the film surface smoother. Then, the self-healing coating liquid is applied online after longitudinal stretching and before transverse stretching, forming a film on the film surface, improving the hardness and scratch resistance of the film material, enabling rapid self-healing at room temperature, strong stability, and avoiding the occurrence of rainbow patterns.
Owner:扬州博恒新能源材料科技有限公司

Doped-nanoparticle photochromic heterostructures

ActiveUS12509624B1Tenebresent compositionsLuminescent compositionsSemiconductor NanoparticlesNanoparti cles
Some variations provide a photochromic heterostructure comprising: first semiconductor nanoparticles that have an average first-nanoparticle effective diameter from 1 nanometer to 20 nanometers, wherein the first semiconductor nanoparticles are not doped; and second semiconductor nanoparticles that have an average second-nanoparticle effective diameter from 1 nanometer to 60 nanometers, wherein the second semiconductor nanoparticles are doped with one or more transition metals, wherein the second semiconductor nanoparticles have a bandgap energy that is higher than the bandgap energy of the first semiconductor nanoparticles, and wherein the first semiconductor nanoparticles and the second semiconductor nanoparticles are in physical contact with each other. The disclosed photochromic heterostructure is especially useful when lower-energy light excites lower-energy-bandgap first nanoparticles to cause higher-energy-bandgap, doped second nanoparticles to photodarken. If the first nanoparticles were not present, the doped second nanoparticles would require higher-energy light to cause darkening. Examples demonstrate embodiments of the invention.
Owner:HRL LAB

Fe3O4 magnetic nanoparticle with carboxyl-rich surface, preparation method and application

The invention discloses a preparation method of Fe3O4 magnetic nanoparticles rich in carboxyl groups on the surface, which comprises the following steps: modifying Fe3O4 nanoparticles by using polyethylene glycol and silicon dioxide to enhance the dispersity and biocompatibility of the magnetic nanoparticles, modifying the surfaces of PEG-Fe3O4 coated SiO2 nanoparticles by using a silane coupling agent containing silane groups and unsaturated double bonds to obtain the magnetic nanoparticles rich in carboxyl groups on the surface, and modifying the magnetic nanoparticles rich in carboxyl groups on the surface by using a silane coupling agent containing silane groups and unsaturated double bonds to obtain the magnetic nanoparticles rich in carboxyl groups on the surface. Then octavinyl-POSS and double bonds on the surfaces of the nano particles are subjected to click modification to form an octahedral cage, 4-mercaptobenzoic acid and double bonds are further subjected to click modification, the surfaces of the nano particles are rich in carboxyl, and a polymer brush rich in carboxyl is constructed. Compared with a conventional streptavidin coupling method, a high-density polymer chain provides a large number of carboxyl active binding sites, so that the streptavidin coupling amount is increased, the antibody coupling rate is increased, and a solution is provided for applications such as high-sensitivity biological detection, efficient targeted drug delivery and stable immunoassay.
Owner:NANOMICS BIOTECHNOLOGY CO LTD

Magnetic nanoparticle relaxation time detection method and environmental parameter detection method

The invention belongs to the technical field related to nanometer material testing, and discloses a magnetic nanoparticle relaxation time detection method and an environmental parameter detection method, and the method comprises the following steps: applying an excitation magnetic field around a to-be-detected target mixed with magnetic nanoparticles; obtaining magnetization response generated by the magnetic nanoparticles in any direction of the magnetic field plane, and obtaining phase lag corresponding to any order harmonic term of the magnetization response; according to the function relationship between the phase lag corresponding to any harmonic term and the Brown relaxation time of the magnetic nanoparticles, solving and obtaining the Brown relaxation time of the magnetic nanoparticles; wherein the function relationship comprises a correction term introduced by magnetic dipole interaction of the magnetic nanoparticles. The magnetic dipole interaction among the magnetic nanoparticles is introduced, relaxation time detection of particle space distribution under an external magnetic field is corrected, the interference of the magnetic dipole interaction on the magnetic nanoparticle Brown relaxation time detection process can be effectively reduced, and accurate estimation of the magnetic nanoparticle Brown relaxation time is realized.
Owner:HUAZHONG UNIV OF SCI & TECH

NiO / Fe2VO4-based nanocomposite electrode

ActiveUS12469843B2Solid electrolytesHybrid capacitorsComposite electrodeNanoparti cles
A nanocomposite electrode including a substrate, a binding compound, a conductive additive, and NiO / Fe2VO4 nanoparticles. The NiO / Fe2VO4 nanoparticles have a substantially spherical shape. A mixture of the binding compound, the conductive additive and the NiO / Fe2VO4 nanoparticles, is at least partially coated on a first surface of the substrate. A method of making the NiO / Fe2VO4 nanoparticles is described.
Owner:IMAM ABDULRAHMAN BIN FAISAL UNIV

System and method for removing microparticles and nanoparticles from water using gelatinous zooplankton mucus

A method for removing particles from water, the method comprising: supplying gelatinous zooplankton mucus to water comprising particles; allowing formation of particle aggregates in the water by allowing interaction between the particles in the water and the gelatinous zooplankton mucus; removing the particle aggregates from the water by passing the water comprising particle aggregates through a filter configured to receive water comprising particle aggregates and further filter the water; and exiting filtered water from the filter. A system for removing particles from water with the aforementioned method is also provided. Additional embodiments of the system and method for removing particles from water are disclosed herein.
Owner:OFEK ESHKOLOT RES & DEV +3

Nanoimprint adhesive and preparation method thereof

The invention discloses a nanoimprint adhesive and a preparation method thereof, the nanoimprint adhesive is prepared from the following raw materials: an optical monomer, an acrylate prepolymer, a modified acrylate prepolymer, nanoparticles, a photoinitiator, a coupling agent and a diluent, the structural general formula of the optical monomer is shown in the specification, R1 is methyl or hydrogen, R2 is methyl or hydrogen, and R3 is methyl or hydrogen. And the difference between the refractive index of the nanoparticles and the refractive index of the optical monomer is greater than 0.4. According to the nanoimprint adhesive provided by the invention, the optical monomer and the nanoparticles have a synergistic effect, so that the refractive index of the cured nanoimprint adhesive can reach 1.7-1.8. The optical monomer can participate in curing together with other components to form a macromolecular or cross-linked network, so that the cured colloid can realize higher structural strength, nanoimprint demoulding is facilitated, the micro-nano structure is kept intact during demoulding, and the colloid is not easy to remain; and when a reliability test is carried out, the micro-nano structure on the cured colloid can be kept relatively complete, so that the production yield can be improved.
Owner:ZHUHAI MOJIE TECH CO LTD

Intelligent preparation system and process of composite antibacterial material with synergistic interaction of nanoparticles

The invention discloses an intelligent preparation system and process for a composite antibacterial material with synergistic interaction of nanoparticles, and relates to the field of preparation of composite antibacterial materials. The raw material pretreatment module integrates a nano particle purification unit, a base material modification unit and an antibacterial agent dispersion unit, so that the purity and the dispersity are improved; the intelligent proportioning and mixing module consists of a five-channel metering pump, a dynamic mixer and a concentration monitoring device and is used for accurately controlling the component proportion; the reaction synthesis module comprises a constant-temperature reaction kettle, a pressure control system and an inert gas protection unit, and stable reaction is guaranteed; the performance online detection module is used for testing the antibacterial property, the mechanical property and the microstructure; the intelligent regulation and control module optimizes process parameters through an algorithm; the product post-processing module comprises a filtering unit, a drying unit and a sterile packaging unit to ensure the product quality. The antibacterial performance and stability are improved, the antibacterial aging is prolonged, energy consumption is reduced, efficient, green and intelligent preparation of the composite antibacterial material is achieved, and industrial technology upgrading is promoted.
Owner:SHUCHENG COUNTY XIANGYUN BAMBOO & WOOD CRAFT CO LTD

Nanoparticles encapsulating soluble biologics, therapeutics, and imaging agents

An “inverse” precipitation route to precipitate aqueous soluble species with copolymers as nanoparticles having a hydrophilic, polar core and a less polar shell is described.
Owner:THE TRUSTEES OF PRINCETON UNIV

Method for low-temperature one-step synthesis of strong magnetic hydrophobic fe3o4 nanoparticles, fe3o4 nanoparticles and application

The application relates to a method for one-step synthesis of strong magnetic hydrophobic Fe3O4 nanoparticles at low temperature and the Fe3O4 nanoparticles and application, and belongs to the technical field of nano material preparation. The method comprises the following steps: adding a ferrous sulfate solution into a mixed solution of sodium hydroxide and sodium nitrate, heating and stirring to react, adding oleic acid in the reaction process, and obtaining black Fe3O4 crystals after the reaction is completed. The saturation magnetization of the obtained strong magnetic hydrophobic Fe3O4 nanoparticles can reach 85.69 emu / g at most, and the water contact angle can reach 148.95 DEG. The one-step synthesis reaction only needs to use oleic acid as a regulator, avoids an extreme high-temperature and high-pressure environment, does not need to use a toxic chemical solvent, the condition is mild, the process is simple, the operation condition is easy to control, and the method has a wide application prospect.
Owner:CENT SOUTH UNIV

Surface modified hepatocyte targeting molecule-based ferroferric oxide nanoparticle as nuclear magnetic resonance imaging contrast agent as well as preparation method and application of surface modified hepatocyte targeting molecule-based ferroferric oxide nanoparticle as nuclear magnetic resonance imaging contrast agent

The invention discloses a preparation method of a nuclear magnetic resonance imaging contrast agent based on surface hepatocyte targeting molecule modification ferroferric oxide nanoparticles, which comprises the following steps: synthesizing ferroferric oxide nanoparticles (Fe3O4 NPs) by a thermal decomposition method, and connecting the Fe3O4 NPs with a ligand dopamine-PEG2000-EOB carrying hepatocyte targeting molecules by a ligand exchange method to obtain the nuclear magnetic resonance imaging contrast agent. The nanoparticles Fe3O4-EOB-PEG capable of carrying out selective T2 nuclear magnetic resonance imaging on the hepatocytes are formed. The method is simple and easy to operate, the controllability of the preparation process is high, the biocompatibility of the obtained product is good, T2 signals of hepatocytes can be remarkably improved, the good early diagnosis effect on liver tumors is achieved, and wide application prospects are achieved.
Owner:ZHONGNAN HOSPITAL OF WUHAN UNIV

Low-smoke halogen-free aging-resistant insulated cable and preparation method thereof

The invention discloses a low-smoke halogen-free aging-resistant insulated cable and a preparation method thereof, belongs to the technical field of cable preparation, and is used for solving the technical problem that the smoke suppression performance and the aging resistance of a sheath layer of an insulated cable in the prior art need to be further improved. The preparation method specifically comprises the following steps: mixing polypropylene, SBS-g-MAH, modified nanoparticles, a flame-retardant modified monomer, an initiator and an auxiliary additive, adding the mixture into a double-screw extruder, melting the mixture, extruding the melt mixture and coating the melt outside a wrapping layer to form a sheath layer, thereby obtaining the insulated cable. The modified POSS and the phenolic resin are mixed to prepare the modified microspheres, and the nickel acetate solution is further introduced for complexing deposition to obtain the modified nanoparticles, so that not only are the smoke suppression performance and the flame retardant performance of the insulated cable sheath layer improved, but also the mechanical performance and the thermal aging resistance of the cable sheath layer are improved.
Owner:广东广缆电缆实业有限公司

Preparation method of Ag-Fe3O4 composite SERS (Surface Enhanced Raman Scattering) substrate and application in detection of trace pollutants in water

The invention belongs to the technical field of SERS (Surface Enhanced Raman Scattering) detection, and relates to a preparation method of an Ag-Fe3O4 composite SERS substrate and application of the Ag-Fe3O4 composite SERS substrate in monitoring trace pollutants in water. Based on a plasma-semiconductor synergistic enhancement mechanism, cubic Fe3O4 nano particles with exposed {100} crystal faces are synthesized through a hydrothermal method, and the cubic Fe3O4 nano particles and Ag nano particles are subjected to ultrasonic-stirring to construct the Schottky heterojunction. The substrate creatively realizes dual-channel enhancement: the local surface plasmon resonance effect of Ag nanoparticles generates electromagnetic enhancement, the narrow band gap of Fe3O4 promotes photo-induced electrons to be transferred to Ag, an interface electric field is formed, and the polarizability of adsorption molecules is remarkably increased. When the probe is applied to detection of trace pollutants in a water body, the probe molecule RB is anchored on the surface of Fe3O4 through carboxyl, and the HOMO energy level of the probe molecule RB and the valence band top of Fe3O4 generate resonance charge transfer, so that the Raman cross section is improved. The detection limit of RB under 0.25 mW laser is increased by several orders of magnitude compared with that of a single Ag substrate.
Owner:LIAONING UNIVERSITY

Numerical simulation method for preparing organic nanoparticles through microfluidics and preparation method of organic nanoparticles

The invention discloses a numerical simulation method for preparing organic nanoparticles by microfluidics and a preparation method of the organic nanoparticles. The method comprises the following steps: S1, obtaining three microchannel structures with different forms; and S2, performing numerical simulation of the nucleation-growth-aggregation process of the organic nanoparticles in the micro-fluidic chip according to the three micro-channel structures with different forms. By adopting the technical scheme provided by the invention, the influence of structural parameters such as the structure, the flow velocity and the flow velocity ratio and hydrodynamic parameters on the particle size and uniformity of the organic nanoparticles is quantitatively analyzed through numerical simulation.
Owner:NORTH CHINA ELECTRIC POWER UNIV

Gallium-based alloy composite working medium and preparation method thereof

The invention relates to the technical field of heat exchange, and particularly discloses a gallium-based alloy composite working medium and a preparation method thereof.The gallium-based alloy composite working medium comprises a main heat transfer fluid and nano particles dispersed in the main heat transfer fluid, and the main heat transfer fluid is liquid gallium-based alloy; the nano particle comprises a metal core, a non-metal shell layer coated outside the metal core and a carbon nano material layer coated outside the non-metal shell layer. The carbon nanomaterial is modified on the surface of the non-metal shell layer, the dispersion condition of nanoparticles in liquid metal is effectively improved, and meanwhile, the carbon nanomaterial can effectively mask silicon hydroxyl on the surface of the non-metal shell layer and prevent self-polymerization tendency between the non-metal shell layers by modifying the surface of the non-metal shell layer.
Owner:江淮前沿技术协同创新中心

Hardening liquid, hardened film, preparation method of hardened film and polaroid

The invention provides hardening liquid, a hardening film, a preparation method of the hardening film and a polaroid, and relates to the field of optical film materials. The hardening liquid is prepared from the following components in parts by weight: 10 to 60 parts of hydroxy acrylic resin, 40 to 80 parts of polyurethane modified acrylate, 5 to 40 parts of acrylate monomers, 1 to 8 parts of an initiator, 1 to 15 parts of a curing agent, 50 to 200 parts of a high-boiling-point solvent, 50 to 200 parts of a low-boiling-point solvent, 5 to 40 parts of nano particles and 0.01 to 0.2 part of a flatting agent, wherein the boiling point of the high-boiling-point solvent is 100 to 200 DEG C, and the boiling point of the low-boiling-point solvent is 60 to 90 DEG C. The high-hardness and low-warpage transparent hard coating film provided by the invention has the advantages of high pencil hardness, low warpage, excellent wear resistance, excellent adhesive force and low haze, is high in process adaptability, and has shallow MD (machine direction) stripes after rolling.
Owner:CHENGDU RAYBOCH MATERIAL TECH CO LTD

Method and system for preparing IL-12 slow-release hydrogel based on nanoparticles

PendingCN121059771APeptide/protein ingredientsAerosol deliveryNanoparticle ComplexNanoparti cles
The invention relates to the technical field of preparation of IL-12 slow-release hydrogel, in particular to a preparation method and system of IL-12 slow-release hydrogel based on nanoparticles, and the preparation method comprises the following steps: obtaining high-quality nanoparticles, carrying out irradiation sterilization on the high-quality nanoparticles to obtain sterilized nanoparticles, obtaining a drug-loaded nanoparticle compound, and preparing a hydrogel base material solution; the method comprises the following steps: obtaining an optimal mixing ratio, confirming divalent cation parameters, preparing a crosslinking solution, preliminarily mixing the crosslinking solution and a hydrogel precursor solution to obtain an initial mixed solution, detecting the initial mixed solution to obtain crosslinking performance parameters, and if the crosslinking performance parameters meet preset standard crosslinking performance parameter interval conditions, determining that the hydrogel is in the crosslinking state. If not, taking the initial mixed solution corresponding to the optimal crosslinking performance parameter as the optimal IL-12 slow-release hydrogel, and completing the preparation of the IL-12 slow-release hydrogel based on the nanoparticles based on the optimal IL-12 slow-release hydrogel. The in-vivo and in-vitro slow release effect of the IL-12 can be improved.
Owner:THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV

Low-viscosity multi-type emulsion composition

To provide a multi-type emulsion composition and a preparation method thereof.SOLUTION: Disclosed herein are a multi-type emulsion composition and a preparation method thereof. The emulsion composition is a composition in which a water part and an oil part are mixed and emulsified, the water part includes a non-amphipathic nanoparticle dispersion, the oil part includes an emulsion and the emulsion includes an oil phase or silicone phase as an external phase, the emulsion composition includes the water part as a continuous phase and the oil part as a dispersed phase, and the dispersed phase is surrounded by the non-amphipathic nanoparticles.SELECTED DRAWING: Figure 1
Owner:AMOREPACIFIC CORP

Dual-signal-amplification lanthanide oxide electrochemiluminescence aptamer sensor for detecting acetamiprid, and preparation method and application of dual-signal-amplification lanthanide oxide electrochemiluminescence aptamer sensor

The invention relates to a lanthanide oxide electrochemiluminescence aptamer sensor with dual signal amplification for detecting acetamiprid as well as a preparation method and application of the lanthanide oxide electrochemiluminescence aptamer sensor. According to the sensor, terbium-doped europium oxide (Eu2O3: Tb < 3 + >) modified by gold nanoparticles (Au NPs) is used as a luminous body, and the electrochemical luminescence performance can be remarkably improved through multiple mechanisms: on one hand, the Au NPs can effectively promote generation of more sulfate free radicals; on the other hand, the surface defect passivation effect and the efficient synergistic effect of energy transfer jointly achieve effective amplification of signals. In addition, the wool ball-shaped Ag NPs is used as a plasma resonance signal amplification source, so that the ECL intensity of the sensor is further enhanced. The prepared electrochemical luminescence sensor with the dual signal amplification effect is used for detecting acetamiprid (ACE), has a wide linear range and a low detection limit, and has a wide application prospect in detection of acetamiprid residues in a water environment.
Owner:CHANGZHOU NUOJUN ELECTRONIC TECHNOLOGY CO LTD

A method for rapidly detecting BaP in edible oil based on LLE-SERS modified silver nanomaterial

The application belongs to the technical field of food safety detection, and specifically discloses a method for detecting BaP in edible oil by using CTAB modified silver nanomaterial based on LLE-SERS, which comprises the following steps: preparing Ag nanoparticle sol, preparing CTAB functionalized Ag nanoparticle sol, SERS detection of BaP standard aqueous solution with different concentrations, fitting a standard curve, extracting BaP and performing SERS detection. The synthetic raw materials of the surface CTAB functionalized Ag nanoparticles used in the application are simple, and the coverage degree of the ligand molecules CTAB on the surface of the Ag nanoparticles can be controlled and adjusted. The CTAB as the surface ligand can directly capture and enrich BaP molecules. The detection method is high in stability, and can effectively avoid the problem that different batches of samples produce different effects in the Raman test.
Owner:XIAMEN UNIV

Self-cleaning flexible SERS (Surface Enhanced Raman Scattering) blotting membrane for selectively detecting trace microcystin

The invention provides a preparation method and application of a high-sensitivity imprinted membrane for selectively detecting microcystic toxins (MC-LR) in water based on surface enhanced Raman scattering. The preparation method comprises the following steps: step 1, preparation of silver nanocubes; step 2, preparation of Ag NCs-coated TiO2 nanoparticles; step 3, preparation of an Ag NCs-coated TiO2 / PDMS composite membrane; according to the invention, a membrane technology, an SERS technology and MIT are combined, so that the prepared product has excellent physical and chemical properties of a PDMS membrane, high sensitivity of an SERS detection technology and high selectivity of MIT; the invention provides a new method for SERS detection and widens the application range.
Owner:HAINAN NORMAL UNIV

Flexible lead-free piezoelectric composite film and preparation method thereof, and electronic device

ActiveUS20260033241A1Core shell nanoparticlesThin membrane
A method for preparing a flexible lead-free piezoelectric composite film, in which a rare-earth-doped SrSbxSc2-xTaCl2O8 precursor powder is prepared and coated with a BaTiO3 shell to form core-shell nanoparticles, and the core-shell nanoparticles are dispersed in a polyvinylidene fluoride (PVDF) matrix to obtain the flexible lead-free piezoelectric composite film. An electronic device including such piezoelectric composite film is also provided.
Owner:TWENTY FOUR HOURS INTERNATIONAL PTE LTD

Near-infrared two-region aggregation-induced emission probe, nanoparticle, and preparation method and application of near-infrared two-region aggregation-induced emission probe and nanoparticle

The invention discloses a near-infrared two-region aggregation-induced emission probe, nanoparticles, a preparation method and application, and relates to the technical field of fluorescent molecular probes. The structural formula of the near-infrared two-region aggregation-induced emission probe is shown in the specification, wherein X1, X2 and Y are respectively and independently selected from one of O, S, Se and Te; r1, R2 and R3 are respectively and independently selected from one of H, F, cyano, trifluoromethyl and saturated alkane. The probe provided by the invention has relatively high luminous efficiency, photo-thermal efficiency and active oxygen generation capability in an aggregation state, and can realize fluorescence, photo-acoustic and photo-thermal multi-mode imaging and photo-thermal / photodynamic synergistic treatment.
Owner:SHENZHEN UNIV +1

Nanoparticles for synergistically treating tumors and preparation method thereof

The invention discloses nanoparticles for synergistically treating tumors and a preparation method of the nanoparticles, and relates to the technical field of preparation of drugs containing inorganic active ingredients. The nanoparticles are composite nanoparticles Mo-PDA prepared by mixing and reacting inorganic active ingredients of phosphomolybdic acid Mo-POM and dopamine; the preparation method comprises the following steps: taking Mo-POM (phosphomolybdic acid), then loading Mo-PDA-coated GOx nanoparticles with a spherical structure formed by glucose oxidase (GOx), and carrying out mixing reaction by taking Mo-POM, adding deionized water, then adding dopamine, continuously stirring for 1 hour, and continuously reacting for 14-18 hours at the temperature of 150-170 DEG C. According to the preparation method disclosed by the invention, PDA is combined with Mo-containing polyacid salt and externally loaded with glucose oxidase (GOx), so that the PTT-modified CDT-hunger nanoparticle Mo-PDA-GOx for cooperatively treating tumors is synthesized, and the PTT-modified CDT-hunger nanoparticle Mo-PDA-GOx has excellent photo-thermal conversion efficiency which reaches 67.2%. The nanoparticles effectively exert synergistic treatment, and the treatment effect on tumors is improved.
Owner:JINLIN MEDICAL COLLEGE

Blending type nanometer fireproof material, fireproof pre-reaction liquid and preparation method and application of blending type nanometer fireproof material and fireproof pre-reaction liquid

The invention relates to a blending type nano fireproof material, a fireproof pre-reaction solution and a preparation method and application thereof, and the blending type nano fireproof material comprises organic nanoparticles and organic / inorganic hybrid nanoparticles; each organic nanoparticle comprises a first core layer, a first flame-retardant layer and a first bridging layer, the first bridging layer is coated on the first flame-retardant layer, and the first flame-retardant layer is coated on the first core layer; each organic / inorganic hybrid nanoparticle comprises a second core layer, a cross-linking layer, a second flame-retardant layer and a second bridging layer, the second bridging layer is coated on the second flame-retardant layer, the second flame-retardant layer is coated on the cross-linking layer, and the cross-linking layer is coated on the second core layer. According to the invention, the defect that a fireproof layer material in the prior art cannot meet the ultraviolet test is overcome, and the defects of bubbles, gummosis, blackening, low material hardness, poor low temperature resistance and the like of the fireproof layer are avoided.
Owner:ANHUI WEIHAO SPECIAL GLASS

Surface-modified aluminum oxide nanoparticles as well as preparation method and application thereof

The invention provides surface-modified aluminum oxide nanoparticles as well as a preparation method and application thereof, and belongs to the technical field of nanoparticles and 3D printing materials. The alumina nanoparticle has a core-shell structure, an inner core is an alumina nanoparticle, and a shell layer is prepared by carrying out hydrolytic polycondensation on an organic silicon oligomer containing a photosensitive group and other organic silicon monomers. The surface-modified aluminum oxide nanoparticles are obtained by adding an organic silicon monomer containing a photosensitive group and other organic silicon monomers into an aluminum oxide nanoparticle dispersion liquid and carrying out hydrolytic polycondensation. The finally prepared modified aluminum oxide nano particles have nano sizes, have good dispersibility and stability in various photoactive diluents, and have low viscosity and high photoactivity, the preparation process is simple, the cost is low, and the method is suitable for industrial production. The mullite material with excellent mechanical properties and a complex topological structure can be prepared in batches through a 3D printing technology, and the market value is huge.
Owner:SOUTH CHINA UNIV OF TECH +1

Surface-modified transition metal oxide nanoparticles, method of making the same, and curable composition and article including the same

A method of making surface-functionalized transition metal oxide nanoparticles comprises: providing a sol comprising transition metal oxide nanoparticles dispersed in an aqueous liquid medium having a pH of less than or equal to 3.5, combining the sol with an extractant composition comprising at least one carboxylic acid and at least one organic amine, and a water-immiscible organic solvent, and separating at least a portion of the organic phase from the aqueous phase and then at least partially removing the water-immiscible organic solvent. The carboxylic acid has from 6 to 30 atoms. The organic amine is represented by the formula R2R3NH, wherein R2 is a hydrocarbyl group having from 6 to 30 carbon atoms, and R3 is H or an alkyl group having from 1 to 4 carbon atoms. The at least one organic amine is present in an amount sufficient raise the pH to at least 5, thereby forming discrete separable aqueous and organic phases. A surface-modified nanoparticle composition, a curable composition and an article comprising the same are also disclosed.
Owner:3M INNOVATIVE PROPERTIES CO

Highly dispersible radical scavenger with low elution and reversible regenerability, and electrode composition comprising same

The present invention relates to a highly dispersible organic-inorganic hybrid nanoparticle radical scavenger having excellent low elution characteristics and reversible regenerability and to an electrode composition comprising same, the highly dispersible organic-inorganic hybrid nanoparticle radical scavenger comprising nanoparticles in which an oxide of cerium (Ce) and silicon (Si) and an oxide of at least one metal (M) selected from transition metals and lanthanides are combined, wherein the nanoparticles have at least one functional group selected from an alkylsulfonic acid group and a fluoroalkylsulfonic acid group.
Owner:DANKOOK UNIV CHEONAN CAMPUS IND ACADEMIC COOP FOUND

A method and device for manipulating nanoparticles based on the principle of acoustic streaming suppression

The present application relates to the technical field of nanomanipulation, and more particularly to a method and device for manipulating nanoparticles based on the principle of acoustic streaming suppression, the method comprising the following steps: S1. setting a microfluidic chip with a cavity; S2. establishing a target standing wave acoustic field in the cross section of the cavity, wherein the sound pressure node plane of the target standing wave acoustic field is parallel to the adjacent side wall of the cavity; S3. introducing a fluid containing nanoparticles into the cavity, and the nanoparticles can be driven to the sound pressure node region under the action of acoustic radiation force and form a stable aggregation cluster; the device comprises a microfluidic chip, the microfluidic chip is provided with a cavity, and the surface of the microfluidic chip is provided with an acoustic wave driving structure, and the sound pressure node plane of the standing wave acoustic field generated by the acoustic wave driving structure is parallel to the adjacent side wall of the cavity. The present application can realize the directional or point manipulation of nanoparticles under the action of actively suppressing acoustic streaming interference.
Owner:GUANGDONG UNIV OF TECH

A method for detecting salmonella typhimurium based on magnetic covalent organic framework and aptamer modified gold nanoparticles

This invention discloses a method for detecting *Salmonella typhimurium* based on magnetic covalent organic frameworks and aptamer-modified gold nanoparticles, belonging to the field of food safety technology. The method uses a magnetic covalent organic framework as a capture probe to capture *Salmonella typhimurium* present in the detection system. After incubation, the magnetic covalent organic framework-*Salmonella typhimurium* complex is collected by magnetic separation. Then, aptamer-modified gold nanoparticles are added, and after incubation, the complex formed by the magnetic covalent organic framework-*Salmonella typhimurium* complex and the aptamer-modified gold nanoparticles is collected by magnetic separation. Finally, a TPE-4A / hydrogen peroxide substrate solution is added, and the absorbance and / or fluorescence intensity are measured. Color parameters are extracted using a smartphone. This method is simple to operate, highly sensitive, and highly specific. Three detection modes work together for self-testing, resulting in accurate and reliable results.
Owner:JILIN UNIVERSITY