57 results about "Nanohybrid composite" patented technology

The application of the invention discloses a preparation method of a polypropylene nano composite material, which comprises the following steps of: (1) proportionally fusing and blending inorganic nano particles and maleic anhydride grafted polypropylene on an internal mixer, an open mill or a screw extruder to obtain a reinforcing agent master batch; (2) proportionally fusing and blending a beta crystal type nucleating agent and the maleic anhydride grafted polypropylene on the internal mixer, the open mill or the screw extruder to obtain a flexibilizer master batch; and (3) proportionally diluting and dispersing the reinforcing agent master batch and the flexibilizer master batch in a polypropylene high-polymer substrate, and carrying out injection molding to obtain the polypropylene nano composite material. With the preparation method, the technical problem that the nano particles and the nucleating agent agglomerate in the polypropylene substrate is well solved; when the flexibility of the modified polypropylene material is greatly improved, strength, rigidity, heat deflection temperature and other parameters are also improved to a certain extent, and simultaneously the density of the material is hardly increased so that a series of high-strength, high-flexibility and high-heat resistance modified polypropylene materials can be prepared.

The invention provides a preparation method of an interpenetrating-network-structure water-based polyurethane nano composite material. The preparation method comprises the following steps: 1) carrying out vacuum dehydration treatment on polymer polylol and hydrophilic functional monomer; 2) adding a catalyst and diisocyanate, reacting at room temperature for 0.5-2 hours, heating to 60-80 DEG C, and carrying out the reaction for 1-5 hours while keeping the temperature; 3) cooling to 40-50 DEG C, adding a chain extender, and carrying out the reaction for 2-4 hours while keeping the temperature; 4) heating to 60-70 DEG C, and adding a reactive monomer for termination; 5) cooling to 30-50 DEG C, and adding a neutralizer to regulate the pH value; 6) heating to 60 DEG C, dropwise adding deionized water, and dispersing by stirring; and 7) heating to 60-65 DEG C, dropwise adding an initiator water solution and a nucleation monomer, carrying out programmed heating, and carrying out the reaction while keeping the temperature, thereby obtaining the interpenetrating-network-structure water-based polyurethane nano composite material. The method effectively solves the problem of VOC (volatile organic compound) discharge. The nano composite material has the characteristics in both the core-shell structure and the interpenetrating network structure, and thus, has favorable mechanical properties. The adopted continuous-process synthesis technique is beneficial to enhancing the production efficiency.

The invention discloses a preparation method of a graphene/Fe3O4/polyaniline ternary wave-absorbing composite material, and relates to the technical field of ternary composite conductive material production. The method is characterized in that a process using aniline monomer to directly reduce graphene oxide is used, and the coordination interaction of the graphene oxide and Fe3O4 is used to prepare the graphene/Fe3O4/polyaniline ternary composite material, so that the goal of greenization of the nano composite material preparation and compounding and refinement of the wave-absorbing material structure can be realized. In the composite material, polyaniline organically wraps the surface of the compound of Fe3O4 and graphene to form a specific layer-by-layer assembled structure. The specific surface area is greatly increased by the laminated graphene sheets, and more interfacial polarization and interfaces are caused by the layered structure and the core-shell structure. The prepared ternary composite material is capable of realizing impedance matching and is beneficial to the attenuation effect of electromagnetic waves by the additional interfacial polarization and multiple interfaces caused by the layer-by-layer assembled structure.

The invention relates to a simple and efficient preparation method of a graphene sheet nano composite material. Industrial intercalated graphite is used as a raw material to prepare a graphene sheet with 3-4 graphene single sheets, thickness of 2-4 nm and oxygen content of only 7% through thermal expansion, ultrasonic dispersion and centrifugal drying; and the graphene sheet is then subjected to melt blending with a rubber matrix to prepare an elastic nano composite material with uniformly dispersed graphene sheets. On the premise of stable enhancement on mechanical properties of the composite material, the electric conduction and thermal conductivity of the composite material are also remarkably enhanced. According to the invention, intercalated graphite is used as a main raw material to substitute commonly used chemically synthesized graphite oxide; the method has simple process, high yield and low cost, can produce graphene nano composite material directly through melt blending, and can be applied to industrial production.

The invention relates to the field of preparation of nanometer composite materials, and particularly relates to a preparing method of a nanometer Fe2O3/rGO composite material and applications of the composite material. The preparing method includes steps of: dissolving Fe2SO4-7H2O into a liquid mixture comprising water and glycerol to form a mixed solution A; dispersing graphite oxide into water and performing ultrasonic dispersion to form a solution B; adding the solution B into the mixed solution A, and stirring uniformly to form a mixed solution C; adding the mixed solution C into a high-pressure reactor, putting the high-pressure reactor into a temperature environment having a temperature of 140-180 DEG C, and reacting 8-12 h to obtain a reaction product; and washing the product with aqueous ethanol and water separately for several times, adding the product into a vacuum drying oven having a temperature of 60-100 DEG C, and drying for several hours to obtain the nanometer Fe2O3/rGO composite material. The preparing method has characteristics of cheap and easily available raw materials, low cost, simple and feasible synthesis process, stable product quality and good process repeatability.

The invention provides a red light enhanced core-shell upconversion luminescent nano-carrier and a preparation method therefor. The material has the chemical expression of NaGdF4:Yb,Er,Mn@NaGdF4:Yb@gel, wherein @ represents coating, and gel represents gelatin. The material provided by the invention is technically characterized in that homogeneous and monodisperse nanocrystals are produced by adopting a high-temperature pyrolysis method, which is environment-friendly and is easy and feasible in operation, and hydrophobic surfaces of nanoparticles are coated with gelatin by adopting a self-assembly method, so as to form NaGdF4:Yb,Er,Mn@NaGdF4:Yb@gel, of which the surface is hydrophilic and has a large number of active groups. The nano composite material prepared by the scheme has a red light enhanced luminescence property, maintains relatively strong luminescence total intensity and has a hydrophilic surface with a large number of active groups. The nano-carrier has enhanced red light emission and relatively strong fluorescence intensity and meanwhile has a hydrophilic active surface, thereby being capable of serving as an excellent photosensitizer carrier.

The invention provides a method for preparing a NiO-In2O3 nano composite material. The method specifically comprises the steps: subjecting indium trichloride tetrahydrate and lauryl amine, which serve as raw materials, to a hydrothermal reaction, and carrying out calcining treatment, so as to obtain indium oxide nanospheres; then, laminating flaky nickel oxide to surfaces of the indium oxide microspheres by taking nickel nitrate hexahydrate, hexamethylene tetramine and trisodium citrate as raw materials, thereby finally obtaining the NiO-In2O3 nano composite material. According to the method, the production process is simple, obtained gas-sensitive materials have p-n heterojunctions formed by indium oxide and nickel oxide, show relatively high sensitivity and rapid response and recovery to acetone and can be applied to the field of acetone gas sensors, and thus, novel gas-sensitive materials with high sensitivity are obtained.

The invention provides a nanometer composite material ZnIn2S4@PCN-224 based on ternary sulfide ZnIn2S4 and porphyrin MOFs (Metal-organic Frameworks). The nanometer composite material is prepared by the following steps: firstly dispersing activated PCN-224 into a N,N-dimethyl formamide-glycerol mixed solution, then adding ZnCl2, InCl3.4H2O and TAA and stirring for 0.5-1.5 hours; and performing heatinsulation treatment on a mixed suspension for 8-12 hours at a temperature of 160-200 DEG C, cooling to a room temperature, washing a solid product with distilled water and ethanol, performing centrifugal separation and precipitation, and drying to obtain solid powder, namely the ZnIn2S4@PCN-224. The nanometer composite material ZnIn2S4@PCN-224 provided by the invention has the benefits that theZnIn2S4 is loaded onto the porphyrin metal-organic framework PCN-224 through a solvo-thermal method, so that on one hand, organic pollutants can be better absorbed, and on the other hand, the separation efficiency of photo-generated electrons and holes is remarkably improved, and the photo-catalytic hydrogen production activity is significantly improved.

The invention provides a preparation method for an anti-static modified plastic and relates to the technical field of production of the anti-static plastic. The preparation method comprises the following steps: adding an organosilicone modified ethyl orthosilicate pre-condensed precursor into a quickly stirred mixed system of graphene microchip and carbon nano tube in the manner of spraying, and then fully mixing with plastic particles, extruding and pelletizing, thereby acquiring a synergic anti-static modified plastic. According to the invention, the gathering problem of graphene microchip and carbon nano tube is solved, the introduction of organic groups in OM-SiO2P can endow the carbon nano tube and the plastic substrate with the interface bonding force, the goal of low filling volume required for reaching the anti-static performance index is achieved and the acquired nanometer composite material has ideal mechanical, thermodynamic and wear-resisting properties.

The invention provides an antibacterial active carbon nano composite material. The preparation method comprises the following steps: by taking waste fiber plates as a raw material, charring for 1-1.5 hours at 550-600 DEG C; activating the obtained carbide crushed by introducing vapor at 700-800 DEG C; sieving the activated carbon and dehydrating at constant temperature; then, carrying out TiO2 load on the activated carbon by a sol-gel method; and microwave heating the dried gel under a condition of 500-800w to obtain the antibacterial active carbon nano composite material. The active carbon nano composite material product prepared by the method provided by the invention is high in density, good in thermal stability, high in content of loaded TiO2 and uniform in dispersion of the loaded TiO2, has broad-spectrum antibacterial property, and also has high antibacterial rate, good antibacterial property and durability of antibacterial property.

The invention provides a nanocomposite material and a preparing method and application thereof. The method comprises the following steps of 1, preparing a multi-layer pore structure carbon nanomaterial modified by polydopamine; 2, distributing nano-metal particles on the modified material obtained in the step 1. According to the nanocomposite material and the preparing method and application thereof, the synthetized nanocomposite material can well fix lipase, thus triglyceride is directly detected, and in addition, according to a sensor prepared through the nanocomposite material, a screen-printed electrode is adopted, so that the nanocomposite material has a good industrialized application prospect. The nanocomposite material can well combine lipase, and the screen-printed electrode of which a work electrode is modified with the nanocomposite material shows good sensitivity, selectivity and capacity of resisting disturbance on the detection of triglyceride. Besides, the preparing process of the nanocomposite material is simple, and the screen-printed electrode has the advantages of being flexible, convenient to carry and the like; because of the disadvantages, a triglyceride sensing chip has a wide industrialized application prospect.

The present invention relates to processing of polymer and is especially a kind of composite nano rectorite/thermoplastic polyurethane elastomer material prepared through smelting and blending process. Owing to the surface and interface effect of the nano particle, the composite material of the present invention has its mechanical performance and heat performance superior to those of traditional composite material in the same chemical composition. The composite material is prepared with thermoplastic polyurethane elastomer of different kinds 100-150 weight portions, organic rectorite clay 1-10 weight portions and demolding agent 1-5 weight portions and through simple pollution-less smelting and blending process. The composite material has wide application.

The invention discloses a resin based mesoporous nano composite material, a preparation method and applications thereof, and belongs to the fields of nano composite material synthesis and water treatment. The resin based mesoporous nano composite material is prepared by the following steps: mixing linear high molecular polymers with a certain amount of chloromethyl polystyrene or polyvinyl chloride, dissolving, mixing nano particles into the mixture, and carrying out pre-mixing, cold crystallization hole forming, and crosslinking amination. The nano composite material is in a ball shape, the aperture is 5 to 40 nm; the specific surface area is 50 to 300 m2/g, the negative ion exchange capacity is 0.5 to 3.0 mmol/g, and the mass percentage of nano particles is 1 to 30%. The provided composite material has the characteristics that the hole structure is abundant, the structure is stable, and the synthesis process is easy to control. Moreover, solved are problems that the holes are easily obstructed during the preparation process of the nano composite material, the hole structure is out of order, and the nano particle content is difficult to adjust. The composite material can be effectively applied to engineering application.

The invention discloses a preparation method of a porous carbon base multi-ingredient nanometer composite material. The method comprises the following steps of performing pretreatment on the natural biological materials with finely grade porous structures; using the materials as templates; performing step immersion by metal salt solution and atmosphere calcination treatment; preparing the multi-ingredient nanometer composite material which has the biological template finely grading structure, uses porous carbon as base bodies and carries different-ingredient nanometer units. The method provided by the invention has the advantages that the used templates are from wide easy-to-obtain natural biological materials; in addition, the carbon source can be easily provided; by selecting different metal salt solution and regulating the process parameters of different soaking processes and calcination processes, the control on multiple ingredients and fine micro-nanometer grading structures of final composite materials can be realized. The preparation method provided by the invention has the advantages that the operation is simple; the cost is low; in addition, flexibility and controllability are realized; the prepared nanometer composite material has wide application prospects in the fields of catalysis, sensing, lithium batteries and the like.

The invention relates to the nanometer biomaterial field, in particular to a triblock copolymer PEO-PPO-PEO/calcium phosphate nanometer composite material and a preparation method thereof. The microscopic particles of the nanometer composite material have calcium phosphate coated triblock copolymer PEO-PPO-PEO structure; wherein, the weight percent of triblock copolymer PEO-PPO-PEO is 5-40% of the total weight of the nanometer composite material and the weight percent of calcium phosphate is 60-95% thereof. The nanometer composite material of the invention can be used as drug carrier, has higher drug-loading rate and excellent slow release performance on water-insoluble drugs and has good application prospect in the Biomedical field; the preparation method is characterized of simple process, convenient operation, lower cost and environmentally friendly and can be operated at room temperature.

The invention discloses an intercalation nanocomposite material of a polyaniline or a polyaniline derivative, and inorganic clay by mechanochemical polymerization method. The method comprises the following steps of: (1) placing inorganic clay into a round-bottom flask with a branch port, vacuum-pumping, fully filling with argon, adding aniline or an aniline derivative, wrapping a tin foil out of the round-bottom flask after magnetically stirring, and stewing out of light under normal temperature, to obtain a blending fluid suspension; (2) grinding the blending fluid suspension, adding an oxidizing agent, covering a mortar with a tunnel in a grinding process, introducing argon into one end of the tunnel, continuously grinding, until to become atropurpureus completely; and (3) washing after reaction, filtrating, and vacuum-drying until constant weight, to obtain the intercalation nanocomposite material of inorganic clay. The prepared nanocomposite not only makes polyaniline or the polyaniline derivative have good dispersibility and high mechanical strength, but also raises water solubility and processing temperature of polyaniline or the polyaniline derivative. The method has advantages of simple preparation method and high polymer intercalation rate, and has a practical application meaning.

The invention discloses a preparation method of a chiral helical polyaniline@MOF nano composite material and the application of the composite material to the detection of chiral drug enantiomers and belongs to the technical field of nano composite material and chiral electrochemical sensing detection. The preparation method comprises the following main steps that: cobalt nitrate is mixed with a precursor solution for preparing helical polyaniline; the cobalt nitrate reacts with the precursor solution at a constant temperature of 20 DEG G overnight; an obtained product is added into a 2-methylimidazole solution; a self-assembly reaction is carried out under a normal temperature condition, so that the chiral helical polyaniline@MOF nano composite material can be prepared. A chiral sensor constructed by adopting the composite material is used for sensitively detecting the content of L-tyrosine and D-tyrosine enantiomers. The chiral sensor can be prepared by a simple method; the chiral sensor is easy to operate; and the chiral detection effect of the chiral sensor is remarkable.