27 results about "Nanoparticle coating" patented technology

The invention discloses a magnetoelectric stent for realizing bone repair under external field driving and a preparation method and application thereof.The stent comprises a stent body based on a triple-period minimal curved surface structure and a magnetoelectric nano-particle coating, and the stent body comprises a convoluted and / or through hole structure; and the magnetoelectric nanoparticle coating is loaded on the inner surface of at least part of the pore structure. The magnetoelectric stent is suitable for providing better mechanical support for the early stage of bone repair of large-area bone defects, meanwhile, under the synergistic effect of magnetoelectric stimulation, osteogenesis and angiogenesis coupling can be promoted, and bone defect repair under the complex conditions of oral clinical alveolar bone vertical bone increment and systemic diseases such as inflammation and the like is achieved.

The invention provides a preparation method of a hydrophobic silver nanoparticle doped coating, which comprises the following specific steps: preparing silicon shell silver chloride nanoparticles (AgCl (at) SiO2NPs) by taking cetyltrimethylammonium chloride (CTAC), silver nitrate, sodium chloride and tetraethyl orthosilicate (TEOS) as raw materials through a one-pot method, and introducing carbon-carbon double bonds by 3-(methacryloyloxy) propyltrimethoxysilane (MPS) under an acidic condition. In the subsequent distillation-precipitation polymerization process, 4-chloromethyl styrene (VBC) is grafted with chloromethyl, and finally, perfluoropolyether methyl acrylate (PFPEMA) is introduced through atom transfer radical polymerization (ATRP) to form AgCl (at) SiO2-F NPs. Nanoparticles are added into polydimethylsiloxane (PDMS) to be evenly mixed, a silica gel catheter is used for pulling and curing to form the hydrophobic nanoparticle coating SR-F. The hydrophobic nanoparticle coating SR-F is mature in step, firm in film and good in hydrophobicity, and experimental results show that the coating has long-acting antibacterial ability.

This invention discloses a method for preparing a lignin-coated cellulose nanofiber sodium-ion battery separator, relating to the fields of electrochemistry and battery separator technology. The preparation method includes: pretreating bamboo particles using a hydrothermal method; subsequently, nano-sizing the bamboo particles using a mechanical dissociation method to obtain a lignin-coated cellulose nanofiber suspension; and then forming a thin film from the lignin-coated cellulose nanofibers using a vacuum filtration method. The lignin nanoparticle-coated cellulose preparation process used in this invention is direct, simple, efficient, and environmentally friendly, eliminating the need for chemical reagents such as acids and alkalis to remove hemicellulose and lignin. Furthermore, the lignin nanoparticle coating effectively improves the diffusion rate of sodium ions during charge and discharge, as well as the discharge specific capacity and cycle stability.

The invention belongs to the technical field of nano biological materials, and particularly relates to a preparation method of cell membrane coated nanoparticles based on solvent equilibrium and sulfydryl anchoring. According to the method, sulfydryl-containing lipid is doped into a membrane system, so that the sulfydryl-containing lipid and the surface of a substrate form a covalent anchor bond to enhance the membrane-substrate binding force, and a small amount of organic solvent is added to improve the fluidity of the lipid and promote spontaneous fusion and uniform spreading of a membrane layer on the surfaces of particles. And centrifuging and washing to obtain the cell membrane nanoparticles with completely coated surfaces. According to the method, high-energy ultrasonic or extrusion treatment is not needed, stable coating can be realized on the premise of maintaining complete composition of membrane protein and lipid, and the adhesion stability of a membrane layer in a high-salt and shearing environment is remarkably improved. The method is suitable for various nano substrates and different morphological structures, and the obtained particles show higher antibody titer and excellent safety in an anti-alpha-hemolysin vaccine model. The invention provides a mild and efficient bionic nano material construction strategy with wide applicability.

A composition for light filtering, the composition comprising: a base material comprising a HEMA-based material; a plurality of metal nanoparticles dispersed in the base material, wherein the plurality of metal nanoparticles exhibit a peak light absorption value in the range of about 500 nm to about 600 nm; an anchoring mechanism dispersed in the base material, the anchoring mechanism comprising methacryloyl-derived monomer; and a nanoparticle coating material disposed on at least a portion of the plurality of metal nanoparticles.

The invention belongs to the technical field of dielectric materials, and particularly relates to a composite dielectric film and a preparation method and application thereof. Through a nano-particle coating technology and an optimized formula, the breakdown voltage and the breakdown strength of the composite film are improved while the high dielectric constant and the low loss of the film are ensured; the interface bonding between the BT particles and the PP matrix is good, the uniform distribution of the nano filler is ensured, the performance stability of the film is improved, and the film has excellent stability and durability especially in a high electric field environment. The preparation process is simplified, a one-step film forming process is adopted, traditional multi-step operation is avoided, the production efficiency is improved, and the production cost is reduced; the technological process is simple, the controllability is high, the application requirements of electronic devices on miniaturization, high energy efficiency and high performance are met, and industrial popularization of high-performance dielectric materials is promoted; the thin film capacitor is compatible with various applications, and is suitable for high-performance thin film capacitor requirements of filtering, power electronics, new energy equipment and the like.

The purpose of this invention is to provide a composite particle that singly blocks both ultraviolet light and infrared light at the same time, has good dispersibility and photothermal effect, and is highly safe. The present invention relates to a long ellipsoid-shaped composite particle comprising a Au nanorod, a Pt nanoparticle coating layer containing Pt nanoparticles provided on the surface of the Au nanorod, and a Au nanooutermost layer provided on the surface of the Pt nanoparticle coating layer.

The application provides a noble metal nanoparticle coating production line and coating process of a three-way catalyst, which comprises a rack, a stepping conveyor, a clamping and coating mechanism, a pressurized cylinder, a slurry supply system and a vacuum pump, a breakable connecting assembly is arranged between the push block and the clamping block of the clamping and coating mechanism, the carrier horizontally placed is conveyed to the coating station through the stepping conveyor, the two ends of the carrier are sealed and clamped by the two clamping blocks, and then the independent coating of the left and right halves is sequentially completed, the quantitative slurry is sent into the material cavity of the one-side clamping block during each coating, the push block is driven by the pressurized cylinder to push the slurry into the carrier channel under positive pressure, the vacuum pump on the other side is started to establish negative pressure, and under the action of the positive pressure pushing and the negative pressure adsorption, the slurry is uniformly coated on the inner wall of the corresponding half channel, the online and turnover-free bidirectional coating of the carrier on the conveying line is realized, the production efficiency is significantly improved, the equipment structure is simplified, and the cost is reduced.

The invention provides high-strength resin concrete with compactness enhanced through magnetic attraction and a preparation method of the high-strength resin concrete, and belongs to the technical field of concrete. The high-strength resin concrete with the compactness enhanced through magnetic attraction is prepared from the following raw materials in parts by weight: 77 to 81 parts of common basalt stones, 8.5 to 10.5 parts of magnetic Fe2O3-loaded small-particle-size basalt stones, 8 to 9.6 parts of epoxy resin, 2 to 2.4 parts of a curing agent and 0.5 part of Fe3O4-SiO2. According to the high-strength resin concrete with the compactness enhanced through magnetic attraction, based on the continuous grading theory, the prepared epoxy resin concrete has the advantages of being large in stacking density, low in porosity, high in strength and high in abrasion resistance through a nanoparticle coating and loading technology, and the compactness is enhanced through magnetic introduction; damage detection of the internal structure of the material is simpler and more convenient, nondestructive detection of the material can be completed, and the method has a great application prospect.

The invention relates to a gradient piezoelectric buffer layer, a preparation method and a solid-state battery. The gradient piezoelectric buffer layer comprises a sodium bismuth titanate nanoparticle coating layer, a lithium phosphate ion conduction layer and a PVDF-ZnO composite electrolyte layer which are arranged in a stacked mode. The preparation raw materials of the sodium bismuth titanate nanoparticle coating layer comprise a sodium source, a bismuth source, a titanium source, a mineralizer and a ternary positive electrode material. According to the invention, a three-layer structure of piezoelectric buffer layer-ion conduction layer-piezoelectric composite electrolyte is constructed, the volume change of the electrode is dynamically compensated by using the inverse piezoelectric effect of the piezoelectric material, and stress regulation and ion transmission are synchronously realized. Compared with a traditional passive buffering strategy, the method has the advantages that the interface impedance can be reduced, the cycling stability is remarkably improved, and technical support is provided for industrialization of high-energy-density (greater than or equal to 400Wh / kg) solid-state batteries.

A colon-targeted delivery system, a preparation method and application thereof, comprising amifostine, pectin and chitosan; through a chemical amidation reaction, carboxyl in the pectin and amino in the amifostine are connected through an amide bond to form a nanoparticle core PEC-AMF, and the chitosan and the pectin form a nanoparticle coating layer through electrostatic interaction to synthesize CS / PEC-AMF nanoparticles; the colon-targeted delivery system in the application realizes precise and controlled drug release by means of the step-by-step change of pH values in the gastrointestinal tract environment and the catalysis of pectinase in the colon; experiments prove that the delivery system has excellent stability in the stomach and small intestine, and can rapidly release amifostine in the colon, thereby effectively protecting the intestinal epithelium and immune cells from damage caused by radiotherapy, while the pectin regulates the intestinal microecology, protects the normal tissues of the colorectum and does not affect the effect of radiotherapy on tumors.

A display device includes a display module, a glass substrate, a buffer film, and a light blocking layer, the buffer film includes a base film and a nanoparticle coating layer provided on at least one surface of the base film, and the nanoparticle coating layer includes a binder and a plurality of nanoparticles. Therefore, the display device according to one or more embodiments may have excellent durability and visibility.

The application discloses a kind of nanoparticle coating loaded urinary system implants and its application, belong to the field of biomedicine.The urinary system implant includes support carrier and nanoparticle coating loaded on the support carrier, the siRNA of targeting TGF-β1 gene is contained in the nanoparticle coating, and the siRNA is wrapped in nanoparticle.The siRNA can be transfected to ureter tissue and inhibit the expression of TGF-β1, to inhibit the occurrence of ureteral stricture.The application combines RNA interference technology and nanoparticle delivery system by urinary system implant, and the effect of the urinary system implant loaded with TGF-β1-siRNA nanoparticle complex for inhibiting ureteral stricture is verified by in-vivo and in-vitro experiments, can effectively inhibit the formation of ureteral stricture around urinary system implant, and has wide clinical application prospect.

The present application relates to a kind of hygroscopic material and its preparation method and application, belong to artificial weather modification catalyst technical field, to solve at least one of the problems such as poor hygroscopicity, poor catalytic performance, low dispersion performance of the hygroscopic material prepared by existing method.The present application forms composite structure by coating nanomaterial on the surface of hygroscopic core.Nanoparticle coating layer can not only effectively inhibit the caking behavior of hygroscopic core in storage and transportation environment, but also promote the hygroscopicity of hygroscopic core to absorb moisture and deliquesce in advance.In addition, the presence of oxide coating layer enhances the chemical stability and durability of the material, so that the hygroscopic material of the present application can maintain high catalytic activity under different climate conditions, and the stability of traditional catalyst in long-term use is improved.The hygroscopic material of this composite structure can be flexibly adjusted according to the type, thickness and interaction of nanomaterial and hygroscopic core, so as to realize the precise control of catalytic performance, and significantly improve the catalytic effect.

The invention relates to the technical field of compressors, and discloses a coating for a compressor. The coating comprises graphite, carbon fibers and nanoparticles. The coating is formed by mixing graphite, carbon fibers and nanoparticles, so that the coating has better self-lubricating performance, and the friction resistance of the coating can be effectively improved. The coating is applied to the compressor, and a uniform and compact protective coating can be formed on the surface of a base body. The coating has low friction coefficient and high wear resistance, and can reduce the friction and wear of the surface of the substrate under the working condition of high rotating speed, thereby prolonging the maintenance period and service life of the compressor. The invention further discloses the coating for the compressor, the compressor and a method for forming the coating on the surface of the base body.

To provide: an article which includes a thin film interference pigment and a coating including a colored selectively absorbing nanoparticles, where the article can exhibit a change in hue, lightness and / or chroma compared to the thin film interference pigment alone; and methods of making the same.SOLUTION: An article comprises: a thin film interference pigment 12; and a coating 10 including colored selectively absorbing nanoparticles 14 on the thin film interference pigment.SELECTED DRAWING: Figure 22

The application discloses a preparation method of a heterojunction diode light-emitting rod driven by a button cell, and belongs to the field of photoelectric and lighting devices. The preparation method comprises the following stages: coating of a light-emitting layer; taking an aluminum rod, coating the surface of the aluminum rod with conductive silver paste or lithium fluoride film, placing the aluminum rod on the zinc oxide nanoparticle coating in the length direction of the light-emitting film, and winding the light-emitting film into a barrel shape in the width direction; using a cover plate to seal the end of the cylindrical structure, plugging a button cell into the beginning end of the barrel-shaped structure, and using a second cover plate to seal the end of the cylindrical structure; the negative electrode of the button cell is connected with the aluminum electrode, and the positive electrode of the button cell is connected with the linear silver electrode. The method overcomes the shortcomings of the lack of P type of inorganic semiconductor materials and the lack of N type of organic semiconductor materials, utilizes transfer printing and coating processes, has low production cost, and the product is flexible, bendable and convenient to carry.

The application discloses an intrinsic flame-retardant high-strength aramid protective fabric and a preparation method thereof, and belongs to the technical field of protective fabrics. The aramid protective fabric comprises a first thin layer and a second thin layer, and the second thin layer is loaded on the outer surface of the first thin layer. The first thin layer is a single-layer fabric structure, the outer layer region and the inner layer region thereof are alternately connected through surface-back stitching or double-sided organization, and a plurality of micro-channels for unidirectional moisture conduction are formed therebetween; the second thin layer is a zirconium-magnesium@SiO2 core-shell nanoparticle coating generated in situ and mediated by extract of Taiping flower, and is anchored to the surface of the first thin layer; the magnesium element and the zirconium element in the coating form a functional gradient distribution along the thickness direction of the first thin layer, the mass concentration of the zirconium element in the outer layer region is higher than that in the inner layer region, and the mass concentration of the magnesium element in the inner layer region is higher than that in the outer layer region. The aramid protective fabric has excellent flame-retardant performance, broad-spectrum antibacterial and mildew-proof performance, high washing resistance and good thermal-wet comfort.

The invention provides a precious metal nanoparticle coating production line and a coating process for a three-way catalytic converter, the precious metal nanoparticle coating production line for the three-way catalytic converter comprises a rack, a stepping conveyor, a clamping coating mechanism, a pressurizing cylinder, a slurry supply system and a vacuum pump, and a disconnectable connecting assembly is arranged between a push block and a clamping block of the clamping coating mechanism; a transversely-arranged carrier is conveyed to a coating station through a stepping conveyor, two ends of the carrier are sealed and clamped through two clamping blocks, then independent coating of a left half part and a right half part is completed in sequence, quantitative slurry is firstly fed into a material cavity of the clamping block on one side during coating every time, a pressing air cylinder drives a pushing block to push the slurry into a carrier hole channel under positive pressure, and then the slurry is conveyed to a coating station through a conveying belt. And then the vacuum pump on the opposite side is started to build negative pressure, under the action of positive pressure pushing and negative pressure adsorption, the slurry is evenly coated on the inner wall of the hole channel of the corresponding half section, online and overturning-free bidirectional coating of the carrier on a conveying line is achieved, the production efficiency is remarkably improved, meanwhile, the equipment structure is simplified, and the cost is reduced.

The present invention relates to novel aqueous tannin nanoparticle dispersions, to a method for their preparation and to the use of the aqueous tannin nanoparticle dispersions, particularly in tannin nanoparticle coatings. Tannin nanoparticles (TNPs) are prepared by dissolution of water-insoluble tannins in an organic solvent or a mixture of organic solvent and water, followed by nanoprecipitation or solvent-exchange to obtain the tannin nanoparticle dispersions.

The invention discloses a magnetoelectric stent for realizing bone repair under external field driving and a preparation method and application thereof.The stent comprises a stent body based on a triple-period minimal curved surface structure and a magnetoelectric nano-particle coating, and the stent body comprises a convoluted and / or through hole structure; and the magnetoelectric nanoparticle coating is loaded on the inner surface of at least part of the pore structure. The magnetoelectric stent is suitable for providing better mechanical support for the early stage of bone repair of large-area bone defects, meanwhile, under the synergistic effect of magnetoelectric stimulation, osteogenesis and angiogenesis coupling can be promoted, and bone defect repair under the complex conditions of oral clinical alveolar bone vertical bone increment and systemic diseases such as inflammation and the like is achieved.

A spray nozzle comprising an orifice member is described, wherein the orifice member is provided with a nanoparticle-laden resistive material. Further, the nanoparticle-loaded resistive material is physically formed to provide a measurable wear characteristic parameter that can be measured by energizing the nanoparticle-loaded resistive material and reflect the operational performance status of the nozzle. Embodiments of the present invention facilitate forming, applying, and updating spray nozzle operational performance models to accommodate different spray nozzle instances.

The invention discloses a humidity response type high-reflection strong-convection composite nanofiber cooling fabric and a preparation method thereof, and relates to the technical field of fiber manufacturing. The humidity response type high-reflection severe-convection composite nanofiber cooling fabric comprises an electrostatic fabric substrate and a reflection nanoparticle coating, wherein the surface of the electrostatic fabric substrate is coated with the reflection nanoparticle coating; a penetrating notch is formed in the electrostatic textile fabric base. Through the high-reflection material and the strong convection design, the cooling fabric capable of effectively reflecting solar radiation and enhancing convection flow of heat energy is obtained, so that the temperature of a human body in a hot environment is reduced, the sensible temperature of the human body can be maintained in an optimal physiological interval, the comfort of the human body is improved, and body health is guaranteed. The high-reflection and strong-convection fabric provided by the invention can provide efficient heat management performance, and the use of the fabric can reduce the dependence on traditional cooling equipment such as an air conditioner, so that the energy consumption and carbon emission are reduced.

The present invention aims to provide a composite particle that simultaneously blocks both ultraviolet light and infrared light with a single particle, has good dispersibility and photothermal effect, and is highly safe.The present invention relates to a prolate ellipsoidal composite particle that includes Au nanorods, a Pt nanoparticle coating layer containing Pt nanoparticles provided on the surface of the Au nanorods, and an Au nano outermost layer provided on the surface of the Pt nanoparticle coating layer.

The application provides a method for surface modification of carbon fibers or metal sheets, surface-modified carbon fibers or metal sheets prepared by the method, a preparation method for carbon fiber / metal sheet / polypropylene composites, and carbon fiber / metal sheet / polypropylene composites prepared by the method. In the application, a series of reactions of oxidation-polymerization-deposition of polyphenol compounds occur in an electrochemical system to form a polyphenol nanoparticle coating. The polyphenol induces polypropylene crystallization, beta nucleating agent crystallization and interface lateral crystal formation of polypropylene, so that a multiple mechanical interlocking structure is formed at the interface of the composite, the interface performance of the composite is significantly improved, and the mechanical performance of the composite is significantly improved. The application is simple to operate and conducive to industrial implementation.

Polymeric nanoparticle composites and methods for making and using the same are provided. Nanoparticle coatings and methods for making and using the same are also provided. Further, methods for synthesizing alkylated reduced graphene oxide nanoparticles are provided.

The invention relates to the technical field of alloys, in particular to an aluminum alloy for a vehicle body framework of a new energy passenger vehicle and a preparation method of the aluminum alloy. According to the alloy, on an aluminum-magnesium-silicon substrate, multi-element microalloying is carried out, and specially-made zirconium-rare earth oxide and carbon nanoparticles are introduced for strengthening. The preparation method comprises the following steps: firstly synthesizing nanoparticles, then smelting, carrying out two-stage homogenization, carrying out hot extrusion forming, and finally carrying out solid solution quenching and welding seam area nanoparticle coating treatment on the profile. The components and the process are effectively coordinated, so that the material has high strength, high plasticity, excellent welding performance and exfoliation corrosion resistance at the same time, the problems of high-plasticity inversion and welding softening of a traditional automobile body framework aluminum alloy are successfully solved, and a high-performance material solution is provided for light weight of new energy automobiles.