290 results about "Nanostructured titanium" patented technology

Bioactive molecules have been coated on nanotubular structured titanium substrates by molecular plasma deposition. The coatings promote cell adhesion and are particularly suited for orthopedic implants that provide improved bone cell adhesion and new tissue growth. Nanodimensional features on titanium substrates are engineered using electrochemical anodization techniques. The nanostructured surfaces provide superior support for a wide selection of polypeptide coatings.

Nanotubular structured titanium (Ti) substrates have been coated with nanoparticulate hydroxyapatite (nano-HA). The nano-HA surface is highly adherent to the nanotubular Ti surface and is free of microparticles. The nano-HA coated nanotubular Ti surface promotes osteoblast cell adhesion and is particularly suitable for orthopedic and dental implants where deposition of osteoblasts and other proteins is important in bone formation.

Nanomaterials of the JT phase of the titanium oxide TiO_2-x, where 0≦x≦1 having as a building block a crystalline structure with an orthorhombic symmetry and described by at least one of the space groups 59 Pmmn, 63 Amma, 71 Immm or 63 Bmmb. These nanomaterials are in the form of nanofibers, nanowires, nanorods, nanoscrolls and/or nanotubes. The nanomaterials are obtained from a hydrogen titanate and/or a mixed sodium and hydrogen titanate precursor compound that is isostructural to the JT crystalline structure. The titanates are the hydrogenated, the protonated, the hydrated and/or the alkalinized phases of the JT crystalline phase that are obtained from titanium compounds such as titanium oxide with an anatase crystalline structure, amorphous titanium oxide, and titanium oxide with a rutile crystalline structure, and/or directly from the rutile mineral and/or from ilmenite. The titanates are submitted to dynamic thermal treatment in an inert, oxidizing or reducing atmosphere to produce the JT phase of the TiO_2-x, where 0≦x≦1 with an orthorhombic structure.

A nitrogen doped nano-TiO2 modified photocatalytic paint with low content of volatile VOC, and high ultraviolet shielding-absorbing and antibacterial effect is prepared from silicic acrylate emulsion, nitrogen doped nano-TiO2, ordinary nano-TiO2, titanium oxide powder, kaolin, heavy and light calcium carbonate, wallastonite powder, assistant, water, ammonia water, defoaming agent and antimildew agent through proportional mixing, stirring and filtering.

A method of producing medically applicable nanostructured titanium with improved mechanical properties includes performing an equal-channel angular pressing (ECAP) and subsequently performing a surface mechanical attrition treatment (SMAT). By performing the ECAP processing on a titanium sample, an ultrafine grained structure is obtained. The ultrafine grained structure may improve the biocompatibility and mechanical properties of pure titanium. When the SMAT processing is performed on the ultrafine grained structure, a nanostructured surface may be obtained. The SMAT processing may be used to enhance the strength of pure titanium to be used in medically applicable implants.

The invention discloses a carbon-coated nano lithium titanate composite material and a preparation method thereof. The preparation method comprises the following steps: 1, preparing nano lithium titanate, namely, respectively preparing micro emulsions of a lithium source and a titanium source, mixing the two types of micro emulsion, standing, centrifuging, alternatively washing with an organic solvent and water, drying, and performing high-temperature calcinations; 2, performing carbon coating on nano lithium titanate, namely, preparing a solution from an organic carbon source, adding lithium titanate granules prepared in the step 1 into the solution, performing ultrasonic dispersion, performing hydrothermal reaction, cooling after the reaction, alternatively washing with the organic solvent and water, filtering, and drying, thereby obtaining the carbon-coated nano lithium titanate composite material. Refining of lithium titanate can be achieved through a micro emulsion method, the solution can be prepared from the carbon source, and carbon coating of the nano lithium titanate can be achieved through hydrothermal reaction, so that a conductive carbon network which is uniform and dense in combination can be formed on the surface of lithium titanate, the conductivity and the large-power charge/discharge property of an electrode material are remarkably improved, and the carbon-coated nano lithium titanate composite material can be used for preparing lithium ion electric containers and lithium ion batteries.

The invention discloses a multi-prevention EPDM rubber coating and a preparation technology thereof, and raw materials of the coating comprises the following components in proportion by weight: 60-80 of EPDM rubber, 8-12 of teflon resin, 15-25 of SBR, 50-70 of terpene resin, 50-70 of SBS, 4-6 of anti-aging dispersing additives, 15-25 of nanometer calcium carbonate, 4-8 of basic magnesium carbonate, 6-10 of nanometer titanium white, 15-25 of nearsphere silicon micro-powder and 450-550 of solvent. The multi-prevention EPDM rubber coating has the functions of waterproofness, anti-corrosion, inflaming retarding, dust prevention and self-cleaning, the formula constitution is reasonable and can realize homogenous stability of long-term storage, the formula constitution is simple, the raw material proportion is reasonable, thus the defect that padding is easy to separate from rubber component in the coating is eliminated. The preparation technology of the multi-prevention EPDM rubber coating is simple and is suitable for industrial production.

The invention discloses an environment-friendly anti-cracking waterproof agent for concrete and a preparation method thereof. The anti-cracking waterproof agent comprises the following raw materials in percentage by weight: 1%-3% of graphite phase carbon nitride nanosheets, 5%-20% of modified ardealite powder, 10%-30% of ultrafine lithium slag powder, 5%-10% of nano titanium dioxide, 5%-15% of bauxite, 20%-50% of modified bentonite, 5%-15% of a magnesium oxide expanding agent, 1%-5% of zirconium silicone, 5%-15% of an organosilicon water repellent, 0.5%-2% of high alkali resistant water absorbent resin, and 1%-5% of a polycarboxylic acid water reducer. the waterproof agent provided by the invention not only can improve the pore structure of concrete, improve the compactness of concrete andenhance the impermeability of concrete, but also can reduce the risk of shrinkage cracking of concrete by utilizing the micro-expansion characteristic, and improves the crack resistance of concrete under the synergistic action of the waterproof agent and an alkali-aggregate reaction inhibition component; by utilizing the excitation effect of the nano titanium dioxide on the graphite-phase carbonnitride nanosheet, the nano titanium dioxide shows efficient photocatalytic performance under natural light, can effectively degrade harmful components such as nitric oxide in the air, and plays a positive role in purifying the environment.

Provided herein are methods for the controlled, independent modification of the surface of titanium-based materials and compositions generated thereby. The methods allow for the alteration of multiple surface characteristics including generation of precise nanostructures, morphology, crystallography and chemical composition for increased biocompatibility, for example, osseointegration, osseoconduction, cell adhesion, cell proliferation, mechanical properties (e.g. elasticity, modulus, surface texture, porosity), hydrophobicity, hydrophilicity, steric hindrance, anti-inflammatory properties and/or anti-bacterial properties.

The invention provides an environment-friendly ethylene propylene diene monomer (EPDM) rubber waterproof coating and a production method thereof. The coating comprises the following dry materials by the total mass parts of the coating: 80-120 parts of EPDM rubbers, 25-35 parts of SBR, 50-70 parts of terpene resins, 50-70 parts of SBS, 3-7 parts of nanometer zinc oxide, 45-65 parts of nanometer calcium carbonate, 4-10 parts of nanometer titanium dioxide and 430-550 parts of 120# solvent oil. Three kinds of nanoparticles are added to the coating, and through scientific proportioning, the fillers can be uniformly dispersed in the solvents with the rubbers, thus solving the precipitation problem of the coating and greatly improving intermixing. The waterproof coating also has the functions of ozone decomposing, sterilizing and self-cleaning, and meanwhile, the performances of the material are all improved. As the 120# solvent oil is added, the coating has the characteristics of non-toxicity, dust prevention, fouling prevention and self-cleaning.

A composite material modified with nanometer calcium carbonate and used for valve sealing is disclosed. The composite material comprises 60-80 parts by weight of the nanometer calcium carbonate, 20-35 parts by weight of nanometer ceramic powder, 15-20 parts by weight of nanometer titanium dioxide, 20-30 parts by weight of nanometer silicon carbide, 10-18 parts by weight of boron carbide, 6-10 parts by weight of nanometer bentonite, 5-8 parts by weight of talcum powder, 25-30 parts by weight of polytetrafluoroethylene, 20-30 parts by weight of polyurethane resin, 12-16 parts by weight of sodium carboxymethylcellulose, 8-12 parts by weight of glycerol, 8-10 parts by weight of linear type phenol formaldehyde resin and a plurality of auxiliary agents. The composite material can form a dense and hard coating on the surface of a metal valve and plays roles of high strength, high wear resistance, high-temperature resistance, corrosion resistance and ageing resistance, thus improving sealing performance of the valve, effectively prolonging the service lifetime of the metal vale, and broadening the using range of the metal valve.

The invention provides a odorless ethylene propylene diene monomer (EPDM) rubber waterproof coating and a preparation method thereof. The coating comprises the following dry materials by the total mass parts of the coating: 80-120 parts of EPDM rubbers, 25-35 parts of SBR, 50-70 parts of SBS, 50-70 parts of terpene resins, 3-7 parts of nanometer zinc oxide, 45-65 parts of nanometer calcium carbonate, 4-10 parts of nanometer titanium dioxide, 155-215 parts of odorless solvent and 200-300 parts of non-toluene solvent. Three kinds of nanoparticles are added to the coating, and through scientific proportioning, the fillers can be uniformly dispersed in the solvents with the rubbers, thus solving the precipitation problem of the coating and greatly improving intermixing. The content of solid in the coating is improved from 40% to 48%, thus the coating is easy to be thicker during construction. The waterproof coating also has the functions of ozone decomposing, sterilizing and self-cleaning. After the odorless solvent is added, the product has the characteristic of odorlessness and is more environment-friendly, and the quality of the product is further ensured.

The present invention provides a nanostructured metal oxide material for use as a component of an electrode in a lithium-ion or sodium-ion battery. The material comprises a nanostructured titanium oxide or vanadium oxide film on a metal foil substrate, produced by depositing or forming a nanostructured titanium dioxide or vanadium oxide material on the substrate, and then charging and discharging the material in an electrochemical cell from a high voltage in the range of about 2.8 to 3.8 V, to a low voltage in the range of about 0.8 to 1.4 V over a period of about 1/30 of an hour or less. Lithium-ion and sodium-ion electrochemical cells comprising electrodes formed from the nanostructured metal oxide materials, as well as batteries formed from the cells, also are provided.

The invention discloses a non-radiative ceramic tile and a preparation method thereof. The ceramic tile is prepared from the following raw materials in parts by weight: 30-40 parts of river sand, 25-35 parts of pyrophyllite, 16-22 parts of dolomite, 10-15 parts of desulfurized gypsum, 15-20 parts of a calcium magnesium powder, 5-10 parts of aluminum dihydrogen phosphate, 11-19 parts of pitchstone, 3-7 parts of nano titanium dioxide, 22-36 parts of modified clay, 10-15 parts of cullet, 12-18 parts of heavy barium sulfate, 10-15 parts of a bamboo charcoal powder, 8-14 parts of a germanite powder, and 5-10 parts of sawdust. The heavy barium sulfate, the bamboo charcoal powder, the germanite powder and other components in the ceramic tile are in mutual synergic effect, so that radioactive rays harmful to human bodies can be absorbed, and damages caused by the radioactive rays are avoided. The prepared ceramic tile has the advantages of light weight, high strength, good weathering resistance, low water absorption rate, strong corrosion resistance, no radiation, safety, environmental protection, durable service, and broad application prospects.

A new titanium-based implant is disclosed, which is formed by a titanium coating manufactured with biomaterials with applications in osseous implantology. The nanotopographical characteristics of these implants inhibit bacterial adhesion and the formation of a bacterial biofilm on the surface, whilst simultaneously presenting suitable properties for the adhesion, stretching and proliferation of bone-forming cells. Moreover, the invention comprises a method for manufacturing the implant by means of oblique-incidence techniques and the use thereof in osseous implantology.

A chemical wastewater treatment material comprises, by weight, 6-14 parts of ferrous chloride, 3-9 parts of ammonium hydroxide, 7-14 parts of PC (poly carbonate), 4-10 parts of sodium dihydrogen phosphate, 3-11 parts of bacillus subtilis, 6-13 parts of sodium thiosulfate, 8-13 parts of nano titanium dioxide, 4-8 parts of activated carbon, 2.5-9 parts of nano deodorants, 8-14 parts of activator citric acid, 3-10 parts of citric acid, 8-10 parts of sorbitan sesquioleate, 2.5-6 parts of lavender oil, 1.2-4 parts of sodium hexametaphosphate and 9-17 parts of sepiolite. The chemical wastewater treatment material has the advantages that acid and alkaline substances in water can be well neutralized, dissolved oxygen rate of the water can be improved, and water eutrophication can be reduced.

The invention discloses a novel anti-formaldehyde night light printing ink with an anti-formaldehyde function and a night light function. The novel anti-formaldehyde night light printing ink is composed of: 5-10% of a vinyl acetate-acrylic emulsion, 5-10% of styrene-acrylic emulsion, 5-10% of titanium dioxide, 3-5% of bamboo charcoal powder, 1-5% of nano titanium, 3-5% of fluorescent powder, 1% of silver nitrate, 1% of ethanol, and 70-75% of distilled water.

A nanostructured monolithic titanium boride (TiB) material and methods of forming such a material are disclosed and described. This material has a room-temperature four-point flexural strength about three times that of commercially available titanium diboride (TiB₂). The achievement of nanostructured internal microstructural arrangement having a network of interconnected titanium monoboride whiskers affords a very high strength to this material above some of the best ceramic materials available in the market. The material contains a small amount of titanium, but it is largely made of TiB phase with substantially no TiB₂. The nanostructured monolithic titanium boride material can be formed by high temperature processing of a powder precursor having carefully selected weight and size distributions of titanium and titanium diboride powders. Potential applications of this material can include wear resistant components such as die inserts for extrusion dies, nozzles, armor, electrodes for metal refining etc. An important advantage of TiB over other hard ceramics is that TiB can be cut by electro-discharge machining (EDM) without difficulty, unlike most ceramics.

Relating to the air purification field, the invention discloses a zinc sulfide quantum dot coated titanium dioxide air purification material and a preparation method. The preparation process includes:(1) adding nano-titanium dioxide, activated carbon and diatomite into polyethylene glycol to prepare an electrospinning solution; (2) conducting electrospinning to prepare titanium dioxide compositefiber; (3) mixing a zinc salt, an aqueous solution containing carboxymethyl cellulose and an acidic solution containing sulfide to obtain a mixed solution; (4) adding the titanium oxide composite fiber into the mixed solution for reaction, thus obtaining the zinc sulfide quantum dot coated titanium dioxide air purification material. In the composite material prepared by the method provided by theinvention, the formed zinc sulfide quantum dot microspheres are uniform in size, and have high luminous efficiency, photochemical stability and other excellent performance, the stable luminous efficiency can improve the photocatalytic performance of titanium dioxide, and organic pollutants adsorbed on the fiber material can be effectively degraded.