402 results about "Nano hybrid" patented technology

Methods of using nanohybrid-containing fluids in a well are provided. The methods include the steps of: (a) forming or providing a well fluid comprising a nanohybrid; and (b) introducing the well fluid into a well. The methods can be used in various applications, such as in drilling, completion, or intervention operations.

The invention relates to nano optical functional materials, especially relates to an organic functional luminescent carbon quantum dots with high luminescent efficiency, a preparation method therefor and applications thereof. The preparation method employs a single-step pyrolysis synthesis method: organic compounds with a low decomposition temperature (150-300 DEG C) is heated at a temperature of 150-350 DEG C (the organic compounds are generally heated for 1-360min and heating methods comprise organic pyrolysis, hydrothermal method and the like) and subjected to a pyrolytic reaction; organic functional luminescent carbon quantum dots are obtained after post-treatment and purification. Surfaces of carbon quantum dots are modified with organosilane or organic high-molecular compounds with acylamino to form the organic functional luminescent carbon quantum dots. The organic functional luminescent carbon quantum dots can be used as luminescent functional materials, optical functional nano hybrid composite materials or used as biological living cell imaging materials.

The invention relates to the technical fields of photoelectricity and chemical industry, in particular to a low-stress epoxy/organic silicon/POSS nano hybrid material, and a preparation method and application thereof. The epoxy/organic silicon/POSS nano hybrid material comprises (a) an epoxy resin, (b) a polyorganosiloxane, (c) a cage-type polysilsesquioxane (POSS), (d) an epoxy hardener, (e) non-essential silane oxycompound and (f) non-essential assistants, wherein the polyorganosiloxane contains epoxy groups and silane oxygen groups. The cured nano hybrid system has excellent reticular cross-linked structure and does not have microphase separation. The epoxy/organic silicon/POSS nano hybrid material has the advantages of high mechanical strength, favorable heat resistance, favorable cohesive property, high chemical stability, favorable ultraviolet aging resistance, favorable optical transparency and other excellent properties, has the functions of low internal stress and pressure buffer, and can be used as an LED packaging material, optical protection material, circuit protection coating material, adhesive paint and the like.

The present invention relates to one kind of super thin no-halogen less-smoke fireproof organic-inorganic composite paint and its preparation process. The composite paint is compounded with heat resistant organic and inorganic nanometer hybridized resin, organic resin, heat resistant pigment, heat resistant filler, carbon forming agent, foaming agent, catalyst, assistant, etc. In case of fire, the components of the paint synergy to swell, foam, isolate oxygen, delay heat transfer and inhibit fire spread. The fireproof paint may be used to form coating of controllable thickness in 0.2-2 mm, has fire resisting limit of 30-200 min, excellent heat resisting performance, excellent fire retarding performance, high fireproof performance, high anticorrosion performance and other advantages.

The invention belongs to the technical field of chemical engineering, more specifically relates to an epoxy/organosilicon/inorganic nano-hybrid material and a preparation method thereof. The epoxy/organosilicon/inorganic nano-hybrid material is made from epoxy resin, organosilicon resin, acidic inorganic nano-particles, unnecessary organic epoxy silane, an unnecessary adjuvant and the like. The components are hybridized and cured in situ under catalytic action of the inorganic nano-particles by simple physical mixing to obtain the epoxy/organosilicon/inorganic nano-hybrid material. The production and preparation processes are environment-friendly, energy-saving, simple and easy for control, and no solvent is used in the processes. The epoxy/organosilicon/inorganic nano-hybrid material prepared by the method has the characteristics of good bonding property, high mechanical strength, high shear strength and excellent machinability of the epoxy resin, and has the characteristics of strong heat resistance, good insulatibity, strong elasticity, strong ageing resistance and good transparence of the organosilicon resin. The epoxy/organosilicon/inorganic nano-hybrid material can be taken as an adhesive, an insulating material, printing ink, a coating material, a solder mask material of a printed circuit, an optical protection material, an LED encapsulation material, an optoelectronic conversion material and the like.

The invention discloses a preparation method of a flexible transparent conducting polymer thin film with antibacterial properties, and belongs to the technical field of nanocomposite materials. The preparation method comprises the steps: preparing stably dispersed graphene oxide (GO) colloid by a Hummers method at first; next, performing surface modification on the graphene oxide under the electrostatic adsorption action of poly(diallyldimethylammonium chloride) (PDDA) and preparing a nanowire/graphene nano hybrid material by a method of inducing the growth of silver nanowires in situ, and then further preparing a silver nanowire/graphene/polyvinyl alcohol thin film by a solution casting method. The thin film has the characteristics of antibiosis, high electricconductivity, high lighttransmittance, flexibility and the like, and is expected to be applied to a plurality of fields such as biosensing and nano-devices; and therefore, the flexible transparent conducting polymer thin film with antibacterial properties has a wide application prospect.

The present invention features nanohybrid drug delivery composition which combines both passive and active targeting for the prevention and treatment of disease. The composition is shell-encapsulated multivalent polymeric scaffold with a therapeutic agent and targeting agent attached thereto.

The invention discloses a hybrid nanomaterial of a melamine chemically-modified graphene oxide and a preparation method of the hybrid nanomaterial. The preparation method mainly comprises the two steps of graphite oxide preparation and functionalized graphene hybrid nanomaterial preparation. According to the invention, organic covalence and non-covalence technologies are perfectly combined, the thermal stability of the synthesized hybrid nanomaterial is greatly improved as comparison with that of the unmodified graphene oxide, and the load of melamine modified on the graphene oxide can be adjusted through the change of the reaction temperature, thus the effective control for the dispersing performance of the functionalized hybrid material in a solvent is realized. In addition, the preparation method is simple and efficient in synthesis step, simple in after-treatment and easy for realizing large-scale preparation; and due to the introduction of the melamine as a flame retardant, the nanomaterial is particularly suitable for being used as nanofiller to prepare a high-heat-resistant flame-retardant polymer nano composite. Therefore, the nanomaterial has better application prospects and economic benefits.

The invention relates to a lignin-based bio-carbon/silicon dioxide multi-scale nano hybrid material and a preparation method thereof. The method comprises the steps of (1) purifying to obtain purified lignin solution; (2) carrying out hybridization to obtain a hybridized solution; (3) ageing to obtain an aged solution; (4) filtering to obtain a lignin/silicon dioxide hybrid material; and (5) drying and carrying out thermal treatment to obtain thelignin-based bio-carbon/silicon dioxide multi-scale nano hybrid material. Compared with the prior art, the lignin-based bio-carbon/silicon dioxide multi-scale nano hybrid material has the beneficial effects that (1) the hybridized nano silicon dioxide particles are smaller and more uniform in size and not easy to reunite, and the hydrophobicity is increased; (2) the lignin-based bio-carbon/silicon dioxide multi-scale nano hybrid material has higher constitutive property and higher pore volume; (3) the lignin-based bio-carbon/silicon dioxide multi-scale nano hybrid material is renewable, lignin is converted into a dispersible nano carbon material to maximize the value while production cost of nano silicon dioxide is reduced; and (4) the lignin-based bio-carbon/silicon dioxide multi-scale nano hybrid material can be applied to the fields of adsorption, catalysis, sensing, energy and polymer enhancement.

The invention relates to a functional graphene-doped epoxy resin conductive adhesive and a preparation method thereof, belonging to the technical field of conductive adhesives. The preparation method comprises the following steps: preparing a stably-dispersed graphene oxide colloid (GO) by a Hummers process, and inducing the growth of silver nanowires in situ on the GO laminae to prepare the silver nanowire/graphene nano hybrid material. The in-situ assembly of the silver nanowires and graphene generates a synergistic effect, so that the prepared nano composite material has very high conductivity and processing stability, avoids the phenomenon of aggregation of graphene in the epoxy resin, and can be uniformly dispersed as a filler in the epoxy resin to prepare the conductive adhesive with excellent conductivity. On the basis of the high conductivity of the graphene and silver nanowires, the conductivity and bonding strength of the adhesive are enhanced under given technological conditions; and the adhesive is especially suitable for conductive packaging and bonding of high-end refined electronic and electric apparatus components, and has wide application prospects.

The invention belongs to the technical field of organic/inorganic hybrid composite materials and discloses a lignin-based graphene/zinc oxide hybrid composite material and a preparation method and application thereof. The method comprises the following steps of: dissolving lignin into water, carrying out heating in an alkaline condition, adding an active agent for reaction and then adding a carboxylated reagent solution for constant-temperature reaction to obtain carboxylated lignin; adding a zinc salt to a carboxylated lignin water solution, carrying out heating reaction, adding a weak acid reagent, stirring the weak acid reagent evenly and drying the mixture to obtain a carboxylated lignin and zinc salt compound; and carrying out high-temperature calcination to obtain the lignin-based graphene/zinc oxide hybrid composite material. In the process of the preparation method, an active functional group of the carboxylated lignin and zinc ions form a chemical bond effect to form a precursor; and a lignin-based graphene/zinc oxide nano hybrid composite structure is prepared through high-temperature calcination; and the lignin-based graphene/zinc oxide nano hybrid composite structure has a potential application prospect in the fields of a super capacitor, a lithium-ion battery and photocatalysis.

The present invention relates to an AC voltage-driven light emitting device having a single active layer of a core-shell structure (p-i-n structure) in which intrinsic semiconductor nanocrystals, exciton combination centers, are uniformly and isotropically distributed around p-type polymer particles, and n-type small molecular particles surround the semiconductor nanocrystals and p-type polymer, and a manufacturing method thereof. An active layer of a core-shell structure using a polymer-semiconductor nano hybrid in the light-emitting device has an inversion symmetry characteristic showing the same current-voltage characteristic during application of a voltage in a forward direction and a reverse direction. Therefore, due to this inversion symmetry characteristic, the light emitting can be driven by even an AC voltage. Also, since the device can be driven by an AC voltage, limitations of an existing DC voltage-driven organic light emitting diode, that is, destruction or a defect of the device by an overcurrent and generation of a dark spot by degradation of local constituent organic materials are solved.

The invention relates to a nano hybrid material modified organosilicone heat-conductive electronic pouring sealant for an electronic product and a preparation method of the sealant. The preparation method comprises the following steps: adding vinyl polydimethylsiloxane, an organosilicone nano hybrid material and surface modified heat-conductive filler into a vacuum kneading machine, and dehydrating and blending for 50-100 minutes to obtain a base material at the temperature of 100-145 DEG C and the vacuum degree of (-0.07)-(-0.09)MPa; adding a hydrogen containing silicone oil crosslinking agent and a crosslinking inhibitor into the base material at the normal temperature, and fully stirring for 20-40 minutes to prepare a component A; adding a platinum catalyst into the base material, and fully stirring for 20-40 minutes to prepare a component B; and then uniformly blending the components A and B in equal weight, and defoaming for 6-12 minutes at the vacuum degree of 0.05-0.07MPa to obtain the nano modified organosilicone heat-conductive electronic pouring sealant. The pouring sealant has relatively low viscosity and good mobility. The heat conductivity coefficient is 0.6-0.85w/m.k. The cured product has good mechanical performance and electrical performance and can be cured at the normal temperature or the high temperature. The pouring sealant can be widely applied to packaging electronic elements, integrated circuit boards, circuit modules, LED (Light Emitting Diode) chips and the like.

The invention discloses a terminated short fluorocarbon chain hyperbranched nano hybrid leather super-hydrophobic coating material and a preparation method thereof. The preparation method includes: mixing mercaptoethanol and fluorinated acrylate, and dropwise adding azodiisobutyronitrile for reaction to obtain oligomeric short fluorocarbon chain monohydric alcohol; adding nano SiO2 into a silane coupling agent, adding methyl N, N-dihydroxyethyl-3-amino-propionate to obtain terminated hydroxyl superbranched nano hybrid polymer; mixing polyester or polyether polyol and isophorone diisocyanate for reaction to obtain NCO terminated polyurethane prepolymer PU; dissolving oligomeric short fluorocarbon chain monohydric alcohol into ethyl acetate,, dropping the NCO terminated polyurethane prepolymer PU, and adding the terminated hydroxyl superbranched nano hybrid polymer for reaction to obtain the coating material. The problem that existing solvent-type polyurethane has serious potential safety hazards and easily polluts environment and high in cost and the problem of low waterproofness of waterborne polyurethane are solved.

The invention discloses a preparation method and application of a highly crosslinked 3D (Three-dimensional) printing photosensitive resin containing POSS (Polyhedral Oligomeric Silsesquioxane). The photosensitive resin is prepared from the components in parts by weight: 10 to 70 parts of prepolymer, 30 to 80 parts of diluents, 1 to 5 parts of photoinitiators and 0.5 to 10 parts of POSS, wherein the POSS is provided with one or more R groups with acrylic ester structures. According to the photosensitive resin for 3D printing provided by the invention, during a photocuring 3D printing process, the POSS is connected with a polymer matrix through a chemical bond and physical crosslinking, so that a real organic-inorganic nanometer hybrid material is formed. The highly crosslinked 3D printing photosensitive resin containing the POSS provided by the invention has higher heat deformation temperature, is widely applied to a high-temperature environment, and has a more excellent mechanical property.

The invention discloses a preparation method of an inorganic nano-hybrided and positively-charged polyelectrolyte complex pervaporation membrane. An inorganic nanoparticle hybrided anionic polyelectrolyte aqueous solution is prepared; a cationic polyelectrolyte aqueous solution with pH (potential of hydrogen) being 5.8-10.0 is prepared; the inorganic nanoparticle hybrided anionic polyelectrolyte aqueous solution is dropwise added to the cationic polyelectrolyte aqueous solution, and an inorganic nano-hybrided and positively-charged polyelectrolyte complex is obtained; the complex is dispersed in a monobasic acid aqueous solution, filtered and left to stand for defoaming, a polysulfone ultrafiltration membrane is coated with the complex through a film wiping knife, and the inorganic nano-hybrided and positively-charged polyelectrolyte complex pervaporation membrane is obtained after drying. The inorganic nano-hybrided and positively-charged polyelectrolyte complex with different composition can be obtained by doping inorganic nanoparticles at different mass percentages and adjusting the pH value of the cationic polyelectrolyte solution. The prepared inorganic nano-hybrided and positively-charged polyelectrolyte complex pervaporation membrane has excellent separation performance and high stability.

The invention belongs to the technical field of polyurethane materials and discloses a polyurethane elastomer containing a polyether polyol/nano-SiO2 hybrid material as well as a preparation method and application of the polyurethane elastomer. The elastomer comprises the following components in parts by weight: 25-80 parts of polyether polyol/nano-SiO2 hybrid materials, 9-64 parts of diisocyanate, 100 parts of polyether polyol, 0-5 parts of chain extenders, 0.1-2 parts of defoaming agents and 3-18 parts of curing agents. The polyurethane elastomer containing the polyether polyol/nano-SiO2 hybrid material can be used for solving the problem that the nanoparticles are bad to aggregate and disperse and improving the consistency of nano-SiO2 and a polyurethane matrix, so that the thermal properties and the mechanical properties such as the maximum thermal weight loss temperature, the tensile strength, the hardness and the elongation at break of the prepared elastomer are remarkably improved and the polyurethane elastomer containing the polyether polyol/nano-SiO2 hybrid material can be widely applied to the fields of mines, metallurgy, mechanical parts, vehicles and shoe materials.

The invention discloses a (Si@MnO)@C/RGO nanometer hybrid material integrating positive/negative cyclic effects and a preparation method and application thereof. The preparation method comprises the following steps of preparing normal hexane solution through chemical replacement reaction, adding Si and RGO to obtain precursor solution, and carrying out thermal treatment on a precursor in the inert atmosphere to obtain the (Si@MnO)@C/RGO nanometer hybrid material provided by the invention. The preparation method has the advantages of simplicity, mass production, easiness in obtaining raw materials and lower cost, the aggregation of (Si@MnO)@C particles in a preparation process is avoided, and meanwhile, the (Si@MnO)@C particles can be uniformly inserted between two-dimensional graphene nanosheet layers, so that the aggregation of the (Si@MnO)@C particles in a cyclic process can be stopped. When the (Si@MnO)@C/RGO nanometer hybrid material is applied to a cathode material of a lithium ion battery, the (Si@MnO)@C/RGO nanometer hybrid material shows the excellent rate capability and the high rate cycle performance.

The invention discloses a preparation method of a pH-responsive graphene /polymer nanometer hybrid material. The preparation method comprises the following steps: under the protection of inert gas of argon or nitrogen, carrying out an esterification reaction by using a reversible addition-breakage chain transfer polymerization chain transfer agent of hydroxyl and terminal carboxyl on the surface of graphene oxide to obtain a macromolecular chain transfer agent for reversible addition-breakage chain transfer polymerization; and then, carrying out reversible addition-breakage chain transfer polymerization under initiation of azodiisobutyronitrile to obtain the pH-responsive grapheme/polymethylacrylic acid-N,N-lignocaine ethyl ester nanometer hybrid material. The graphene oxide/polymer nanometer hybrid material not only ensures that the dispersibility of graphene in water is greatly improved but also has pH responsiveness, and can be widely applied to the fields of drug controlled release carriers, biosensors, intelligent nanometer materials and the like. The preparation method is simple and easy, and industrial production of materials can be realized, so that the method has good popularization and application values.

The invention belongs to the technical field of composite materials with combined structural and functional performance, and relates to a hybrid modified composite material with a high-conductivity and high-toughness structure and a preparation method of the hybrid modified composite material. The composite material adopts a lamination structure formed by n nanohybrid modified continuous fiber enhancement layers (3) and (n-1) layers of organic-nano porous toughening films (4) through staggered laying. The composite material is prepared through steps as follows: determination of material types; preparation of nanohybrid modified continuous fibers or fabric; preparation of the organic-nano porous toughening films (4); preparation of the hybrid modified composite material with the high-conductivity and high-toughness structure. According to the hybrid modified composite material with the high-conductivity and high-toughness structure and the preparation method of the hybrid modified composite material, conductivity and toughness of the composite material are further improved, and the lightning-proof and electrostatic-shielding requirements of the aeronautical composite material are met.

The invention discloses a polyamide/oligomeric silsesquioxane nano-hybrid material and a preparation method thereof. The polyamide/oligomeric silsesquioxane nano-hybrid material is in a star-shaped molecular chain structure and has excellent flow properties and good comprehensive properties. In the invention, the problems of incompatibility of flow properties, thermal/mechanical properties and other properties of the existing polyamide are solved, the material and preparation method of the invention can be widely applied to automobiles, electrical equipment, mechanical parts, textile machinery, paper manufacturing machinery and the like, and especially can be applied to the manufacture of large complex thin-walled elements with higher requirements for surface gloss.

The invention belongs to the technical field of nano hybrid materials and particularly relates to a nano cobalt phosphide-porous carbon nanofiber flexible membrane and a preparation method thereof. The nano cobalt phosphide-porous carbon nanofiber flexible membrane is prepared by: growing cobalt oxide nanoparticles in situ on porous carbon nanofibers having novel pore structure and converting theresultant to cobalt phosphide via gaseous reaction. The preparation method comprises: preparing a polyacrylonitrile/polystyrene nanofiber membrane via an electrospinning process; preparing a porous carbon nanofiber flexible membrane with novel pore structure by high-temperature carbonization; growing cobalt oxide nanoparticles in situ on the porous carbon nanofibers via a one-step hydrothermal process; converting the cobalt oxide nanoparticles into cobalt phosphide nanoparticles via gaseous reaction. The nano cobalt phosphide-porous carbon nanofiber flexible membrane and the preparation methodthereof have the advantages that operations are simple, the conditions are mild, the membrane is suitable for large-scale production, and the cobalt phosphide-porous carbon nanofiber hybrid materialprepared herein is an efficient flexible all-pH hydrogen evolution reaction catalyst membrane material.

The invention discloses a fiber surface modification method capable of adaptively constructing interaction for base bodies with different properties and an application thereof. Nano SiO2 hybrid particles of which the surfaces are grafted with two polymer chain segments with different properties are adopted, and active hydroxyls on the surfaces of the particles form chemical bond combination with a reinforcing material so as to play strong interaction. In the process of compounding the reinforcing material with polymer base bodies with different properties, the binary polymer chain segment grafted on the surface of nano SiO2 can form active diffusion and entanglement or conduct a chemical reaction with a base body having relatively good compatibility with the binary polymer chain segment so as to enhance the interface bonding strength; in the presence of nano SiO2, the surface roughness of fiber can be improved to a certain extent, and the mechanical locking effect with the base body is enhanced; and the nano SiO2 also can serve as a new focal point of stress to initiate microcracks so as to prevent expansion of large cracks and remarkably absorb external impact energy and crack propagation energy, a multi-dimensional reinforcing system of a fiber-nano SiO2-base body is formed, and the strength of a polymer-based composite material is improved.