77 results about "Nanometre" patented technology

Disclosed is a nano-composite material comprising fully separated nano-scaled graphene platelets (NGPs) dispersed in a matrix material, wherein each of the platelets comprises a sheet of graphite plane or multiple sheets of graphite plane and has a thickness no greater than 100 nm and the platelets have an average length, width, or diameter no greater than 500 nm. The graphene plates are present in an amount no less than 15% by weight based on the total weight of the platelets and the matrix material combined. Typically, the nanocomposite is electrically conductive with a bulk conductivity no less than 10 S/cm and more typically no less than 100 S/cm. Highly conductive NGP nanocomposites are particularly useful for fuel cell flow field plate (bipolar plate) and battery electrode applications. Nanocomposites with high NGP proportions can be used in automotive friction plates and aircraft brake components.

The invention provides a high strength organic / inorganic nano composite film layer materials and method for preparation, wherein the composition comprises 10-13% of titanate, 7-17% of silicane coupling agent, 0-6% of silicate ester, 40-65% of alcohol solvent and 1-4% of water. The preparation of the composition consists of using inorganic acid as catalyst, co-hydrolyzing titanate, silicate and silane coupling agent in dimethyl carbinol, coating the obtained paint by rotary, dipping or spraying methods onto the surface of the appliances, finally solidifying 1-3 hours at 135- 150 deg. C.

The present invention represents a radical departure from most conventional macro-scale batch processing methods employed to synthesize and coat colloidal nanoparticles. Synthesis and coating are in series and in-situ, obviating the need for numerous cumbersome, and often expensive intermediate-processing steps. In one embodiment, the invention is a method and apparatus for synthesizing colloidal nanoparticles. In another embodiment, the invention is a method and apparatus for enabling coating of colloidal nanoparticles using an electrophoretic switch for contacting and separating said colloid nanoparticles.

A method of fabricating a patterned polymer film with nanometer scale includes filling particles each having a predetermined size in a pattern provided to a soft polymer mold to prepare an embossed stamp; placing the embossed stamp on a desired polymer film; allowing the embossed stamp placed on the polymer film to stand at temperatures higher than a glass transfer temperature of the polymer film for a predetermined time; and releasing the embossed stamp from the polymer film. Alternatively, the patterned polymer film is obtained by filling particles each having a predetermined size in a pattern provided to a soft polymer mold to prepare an embossed stamp; placing the embossed stamp on a coating layer of a polymer precursor formed on a substrate; curing the coating layer; and releasing the embossed stamp from the cured coating layer.

The invention discloses a lithium-supplementing additive as well as a preparation method and application thereof. The lithium-supplementing additive is of a core-shell structure, a core material is aconductive carbon material, a shell material is lithium oxide, lithium oxide is deposited on the surface of the conductive carbon material, and nano-scale lithium oxide particles form a nano-layer shell. According to the lithium-supplementing additive, lithium oxide is composited with the conductive carbon material and is utilized for supplementing lithium, and the conductive carbon material is utilized for conducting electrons, so that the utilization rate of lithium oxide is increased, and lithium can be well supplemented to an positive electrode or a negative electrode. Furthermore, after lithium is removed from the lithium-supplementing additive, the conductive carbon material can be used as an electrode conducting material, and no impurity is introduced. The lithium-supplementing additive is safe, environmentally friendly and non-toxic, and a foundation is laid for the preparation of high-capacity lithium ion batteries.

Disclosed are a polyethylene nm antibacterial biological couple degradable plastic film and its preparing method. It is comprised of the following components with the mass ratio: starch: photo sensitizer: plasticizer: coupling agent: polyethylene: modifier =10~100:0.1~30:0.5~30:0.3~35:0.1~10:0.5~25:130~26:0.1~53. With antibacterial effect and can be broken down faster by the effects of both light and biologic, the invention has replaced the conventional product with much loss of plastic, it can solve environment pollution existing in the usual plastic film, benefiting for environmental protection. It has the advantaged not existing in the present plastic film, simplified productive technique and low cost.

Highly luminescent nanostructures, particularly highly luminescent quantum dots, comprising a nanocrystal core and thick shells of ZnSe and ZnS, are provided. The nanostructures may have one or more gradient ZnSe_xS_1-x monolayers between the ZnSe and ZnS shells, wherein the value of x decreases gradually from the interior to the exterior of the nanostructure. Also provided are methods of preparing the nanostructures comprising a high temperature synthesis method. The thick shell nanostructures of the present invention display increased stability and are able to maintain high levels of photoluminescent intensity over long periods of time. Also provided are nanostructures with increased blue light absorption.

The invention discloses a super-hydrophobic conformal coating, and a preparation method and an application method thereof. The super-hydrophobic conformal coating is composed of, by mass, 5 to 40% of fluorocarbon resin, 10 to 30% of fluorosilicon resin, 20 to 60% of an organic solvent, 10 to 30% of silica, 1 to 10% of titanium dioxide, 1 to 10% of polytetrafluoroethylene, 0.1 to 0.5% of a catalyst, and 1 to 5% of a curing agent. According to the preparation method, the ingredients are subjected to stirring mixing and ultrasonic uniform dispersion in sequence at a certain ratio. According to the application method, the super-hydrophobic conformal coating is subjected to direct spraying or brush coating onto the surfaces of insulators and outdoor electric power facilities; the thickness of obtained coating layers is controlled to be 0.1 to 0.5mm preferably; and 20 to 60min of normal temperature curing is needed. The preparation method is simple; the cost is low; the super-hydrophobic conformal coating is convenient to use, possesses extremely high hydrophobicity and weatherability, is capable of realizing self cleaning, is a nanometer composite hybrid normal-temperature cured fluorocarbon coating, is capable of realizing stain prevention, pollution flashover prevention, and corrosion prevention of insulators and outdoor electric power facilities effectively, and is promising in application prospect.

The invention discloses magnetically fluorescent bifunctional microsphere and a preparation method thereof. The nanometer microspheres with the magnetically fluorescent function are obtained mainly by wrapping the surfaces of magnetic nanoparticles with polyaniline macromolecules and successfully connecting fluorescent nanometer material quantum dots through functional amino groups at the terminals of the polyaniline macromolecules. The magnetically fluorescent nanometer microspheres have the excellent fluorescence characteristics of the quantum dots and the superparamagnetism of the magnetic particles and can be collected and separated through a simple applied magnetic field. The magnetically fluorescent bifunctional microspheres can be applied to the fields of immunodetection, targeted therapy, cellular seperation and the like.

The invention belongs to the field of inorganic/polymer optic nano composites and particularly relates to a transparent high-refractivity graphene quantum-dot/polymer nano composite film and a preparation method thereof. The composite film is formed by graphene quantum-dot and polymer through ultraviolet curing and thermocuring. Before curing, in each 1mL of polymer monomer, the content of graphene quantum-dot is 0.1-1g. The graphene quantum dots (GQDs) is used as inorganic nano phase, the polymer monomer is used as solvent, the GQDs is synthetized in the polymer monomer by the solvothermal method and then are directly cured to be film by filtering, spraying coating, adding trigger, and double treatment of ultraviolet curing and thermocuring. The transmissivity of the transparent high-refractivity graphene quantum-dot/polymer nano composite film prepared by the film materials ranges from 80% to 95%, refractivity ranges from 1.5 to 2.8, and the transparent high-refractivity graphene quantum-dot/polymer nano composite film can be applied to antireflection coating, optical waveguide materials, optical lenses and other photoelectric fields.

The invention relates to a new textile fabric with self-cleaning, anti-bacterium, mould proofing and radiation-proof functions, which is normal textile fabric through special coating layer process. The hot melt adhesive used in the coating layer accounts for 35 to 85%; the nanometer titanium dioxide power accounts for 1 to 15%; the nanometer mould proofing power accounts for 1 to 15%; the nanometer infrared power accounts for 2 to 8%; the nanometer absorbing material power accounts for 1 to 15%; all the particle sizes of the materials are less than or equal to 35nm. The invention has the advantage of multiple functions.

A process for forming a nano-composite including mixing a first and second thermoplastic polymer in a molten state forming a molten polymer blend. The second polymer is soluble in a first solvent and the first polymer is insoluble in the first solvent. The first polymer forms discontinuous regions in the second polymer. Next, the polymer blend is subjected to extensional flow, shear stress, and heat forming nanofibers where less than about 30% by volume of the nanofibers are bonded to other nanofibers.

Next the polymer blend with nanofibers is cooled and the first intermediate is formed into a pre-consolidation formation. The pre-consolidation formation is then consolidated causing nanofiber movement, randomization, and at least 70% by volume of the nanofibers to fuse to other nanofibers. According to one aspect, the second intermediate is then subjected to the first solvent to the dissolving away at least a portion of the second polymer.

A making method of a composite type biological chip based on a photonic crystal comprises four steps which are preparation of hard substrates, preparation of photonic crystal thin membranes, connection of membranous substrates and surface treatment of the substrates. (1) the preparation of hard substrates: common hard substrates are cleaned by soapy water, washed by de-ionized water and dried, and amino-group or hydroxyl is decorated on the surfaces of the substrates; (2) the preparation of photonic crystal: the nano-microspheres such as specific monodisperse silicon dioxide or polystyrene and the like, which are different in size according to the positions of testing signals, are assembled on the surfaces of the treated substrates to form the photonic crystal thin membrane with the thickness of 20 to 30 microns (3) the connection of membranous substrates: the surface of the photonic crystal thin membrane is laid with a layer of the membranous substrate and the connection is fixed by utilizing the chemisorption or the mutual function between positive and negative charges; (4) the surface treatment of the substrates: by using the methods such chemisorption and the like, chemical groups which can be fixedly connected with biomolecules to be tested are decorated on the membranous layer parts of the surfaces of the composite substrates which are formed in the step (3).

A nano-class magnetic particle-palygorskite composition, which can be magnetically controlled and used for cleaning raw materials, water, air, sewage, etc and preparing target medicines, is composed of palygorskite crystals and magnetic nanoparticles carried by said palygorskite crystal. It is prepared from palygorskite clay through suspending in water, adding Fe salt solution, hydrolytic reaction, dewatering, washing, and reductive calcining.

The invention provides a sensor for detecting penicillin in liquid. A method for preparing the sensor comprises the following steps of: electroplating nanogold on a platinum disk electrode modified by a bilayer lipid membrane; and combining penicillin antibody on the platinum disk electrode modified by the nanogold bilayer lipid membrane to make the platinum disk electrode modified by the nanogold bilayer lipid membrane and combined with the penicillin antibody. The sensor has high sensitivity and an acceptable linear range and can save the time and simplify the operating procedure.

A nano-class inorganic composition modified weatherable acrylic acid-polyester powder paint is prepared from nano-class composition, solidifying agent, assistant, filler, polyester resin and acrylic resin through premixing, fusing-extruding-mixing, cooling, breaking, pulverizing and sieving. Its advantages are high anti-ageing nature, hardness, adhesive and impact strength.

The present invention relates to formulations comprising aluminum nitride nanoparticles, at least one dispersant and at least one aqueous solvent, to the method for obtaining said formulations as well as to their use for obtaining a leveling barrier layer.

The present invention provides semiconductor nanoparticles which emit light at room temperature and include a sulfide or oxide containing zinc, a Group 11 element in the periodic table, and a Group 13 element in the periodic table as a main component or a sulfide or oxide containing a Group 11 element in the periodic table and a Group 13 element in the periodic table as a main component. For example, the semiconductor nanoparticles are represented by Zn_(1-2x)In_xAg_xS (O<x≦0.5).

A coating composition for forming a glossy, inkjet-receptive coating on a substrate includes (a) a cationic polymer, and (b) colloidal silica having an average particle size in the nanometer range.

The invention relates to preparation and application of nanometer multifunctional shell powder coating, and belongs to the field of building coating. The nanometer multifunctional shell powder coatingcomprises, by weight, 100 parts of modified shell powder, 15-25 parts of re-dispersible adhesive powder, 30-40 parts of raw shell powder, 1-5 parts of tourmaline powder, 1-2 parts of pigment and 0.1-0.5 part of defoaming agents. The preparation and the application have the advantages that the nanometer multifunctional shell powder coating has functions of adsorbing and decomposing TVOC (total volatile organic compounds) such as formaldehyde, ammonia gas and benzene, the indoor humidity further can be regulated under 'respiration' effects, accordingly, growth of bacteria can be inhibited, moldcan be prevented in a long-acting manner, and the nanometer multifunctional shell powder coating is beautiful in color, can be widely applied to indoor walls of classrooms, home, offices and the like, is environmentally friendly, is free of pollution, low in production cost and convenient to transport and store and has huge application potential.

The invention provides a preparation method for polyvinyl alcohol/silicon dioxide composite microspheres and belongs to a preparation method for a composite microsphere material. Polyvinyl alcohol and tetraethyl orthosilicate are employed as raw materials, and polyvinyl alcohol/silicon dioxide (PVA/SiO2) composite microspheres are prepared in a water-in-oil system without any surfactants. Tetraethyl orthosilicate is hydrolyzed fully in a PVA solution in an acidic condition, and uniform PVA/SiO2 composite sol is formed; the sol is subjected to dispersion and crosslinking in a water-in-oil system without surfactants, and finally PVA/SiO2 composite microspheres are obtained. The technology is simple, the repeatability is good, energy consumption is low and the cost is low. Surfactant residual and agglomeration of nano inorganic particles in the process of preparing composite microspheres through a traditional emulsification method are avoided. The microspheres are advantaged by regular sphere, high dispersibility and uniform microstructure, and can be used as a drug carrier, an injection-type bone tissue repairing material or a heavy metal ion adsorption material.

The invention provides a nano-porous material pore channel inner surface plasma modification treatment method. The method comprises the step that a nano-porous material is treated in different atmospheres in a normal-temperature and atmospheric-pressure dielectric barrier discharge mode, wherein the output power is controlled to range from 80 w to 110 w, the treatment time ranges from 20 min to 40 min, the alternating current power supply amplitude ranges from 30 KV to 50 KV, and the frequency can be adjusted between 5 KHz and 20 KHz. The nano-porous material treated with plasma is subjected to organic functional modification in pore channels, and the modified nano-porous material can serve as an efficient adsorption material; when the nano-porous material treated with plasma is subjected to metal loading, the metal-loaded nano-porous material can serve as an efficient catalyst.

The invention relates to a particle-size-controllable nano and sub-micron CeO2 preparation method which is characterized by comprising the following steps: by taking cerium nitrate as a solution, adding high molecular surface composite dispersant into the solution, heating the solution to 70-100 DEG C, adding a precipitant solution while stirring in the solution, filtering the precipitate, and then firing at 400-550 DEG C to obtain CeO2 having different particle sizes. The invention has the following advantages: the nano and sub-micron CeO2 prepared by controlling the concentration of the cerium nitrate and controlling the combination and addition of the composite dispersant based on a chemical precipitation method through precipitating, filtering and firing can achieve particle size controllability; the method omits water washing and drying operations; and the preparation method is simple in related equipment and steps, low in cost, low in energy consumption, simple to operate and controllable in particle size.