3472 results about "Ultra fine" patented technology

A closed loop system for increasing yield, reducing post process pollution, reducing energy consumed during and after extraction of fuels or contaminants in formations and for sequestering of carbon dioxide C0₂ from various sources is converted to a critical fluid for use as a flushing and cooling medium. Electrical energy heats a hydrocarbon rich formation resulting in the extraction of hot fluids which are fed to heat exchangers, gas/liquid separator, and steam turbine whereby oil, electric power, carbon dioxide and methane are produced for reuse in the system or for external use. Further, a method for sequestering of carbon dioxide in a formation comprises the steps of injecting CO₂ into the reservoir, flushing with cool pressurized CO₂ for heat removal, infiltrating with ultra-fine low density suspended catalyst particles of dry sodium hydroxide in CO₂, pumping water moistened CO₂ into the reservoir to activate the catalysts, binding the CO₂ with reacting materials and capping the reservoir.

The objective of the present invention is to provide a collagen material that possesses physical properties to an extent that allows suturing while still maintaining the biochemical properties inherently possessed by collagen, and retains its shape for a certain amount of time even after application to the body; its production process; and, a medical material on which it is based, examples of which include a artificial tube for nerve, artificial tube for spinal cord, artificial esophagus, artificial trachea, artificial blood vessel, artificial valve or alternative medical membranes such as artificial endocranium, artificial ligaments, artificial tendons, surgical sutures, surgical prostheses, surgical reinforcement, wound protecting materials, artificial skin and artificial cornea, characterized by filling or having inside a substance having biocompatibility that can be degraded and absorbed in the body into a matrix of a non-woven fabric-like multi-element structure of collagen fibers having ultra-fine fibers of collagen as its basic unit.

A sharpener includes a motor driven shaft with at least one slidably mounted sharpening assembly consisting of a supporting hub structure mounted by its central bore hole on the shaft. The hub structure supports a symmetrically shaped rotating surface containing an ultra fine abrasive material. The rotating surface is pressed with a force of less than 0.2 lb. by a spring action to make sustained rotating abrading contact with a facet of a knife positioned by a knife guide to align the facet into contact with the surface containing the abrasive materials.

Provided are an anode active material for a lithium secondary battery having high reversible capacity and excellent charge/discharge efficiency, comprising a complex composed of ultra-fine Si phase particles and an oxide surrounding the ultra-fine Si phase particles, and a carbon material; and a method for preparing the same. The present invention also provides a method for preparing an anode active material for a lithium secondary battery comprising producing a complex composed of ultra-fine Si particles and an oxide surrounding the ultra-fine Si particles by mixing a silicon oxide and a material having an absolute value of oxide formation enthalpy (ΔH_for) greater than that of the silicon oxide and negative oxide formation enthalpy by a mechanochemical process or subjecting them to a thermochemical reaction to reduce the silicon oxide; and mixing the Si phase-containing oxide complex and carbon material.

Novel, nonagglomerated, engineered, ultra fine Cerium Oxide particles the size of approximately 2 to approximately 10 nm and methods for preparation of the particles. The resultant particles enhance the longevity of cells in culture. Applications of the particles include benefits for wound healing, treating arthritis and joint diseases, anti-aging and the treating of inflammations.

A process for producing an ultrafine-milled whole-grain wheat flour which has the full nutritional value of wheat kernels, while retaining the texture of refined wheat flour and an appearance similar to refined wheat flour, and the products which can be made from the ultrafine-milled whole-grain wheat flour. The process can also be used for producing an ultrafine-milled coarse fraction, which can be used as a replacement and to fortify refined wheat flour. The ultrafine-milled coarse fraction can be used in bakery products, snack products and food products.

A nonwoven web product including ultra-fine fibers is formed utilizing a spunbond apparatus that forms multicomponent fibers by delivering first and second polymer components in a molten state from a spin pack to a spinneret, extruding multicomponent fibers including the first and second polymer components from the spinneret, attenuating the multicomponent fibers in an aspirator, laying down the multicomponent fibers on an elongated forming surface disposed downstream from the aspirator to form a nonwoven web, and bonding portions of at least some of the fibers in the nonwoven web together to form a bonded, nonwoven web product. The multicomponent fibers can include separable segments such as islands-in-the-sea fibers, where certain separated segments become the ultra-fine fibers in the web product. In addition, carbon tubular fibers can be formed by extruding islands-in-the-sea fibers including polyacrylonitrile or pitch sheath segments in the fibers, separating the segments of the fiber, and converting the polyacrylonitrile or pitch to carbon by a carbonization process.

The invention discloses a preselecting method of low-grade magnetic iron ore, comprising the steps of crushing the raw ore of the magnetic iron ore by coarse crushing, intermediate crushing and fine crushing operations, conveying to subject to ultra-fine crushing operation, and then crushing by a high-pressure roller mill, scattering the crushed product by a wet cylindrical sieve, conveying the ore on the cylindrical sieve to the vibrating sieve by a belt to perform wet gradation, conveying the ore on the vibrating sieve to a dry magnetic separator by the belt to discard the waste, returning the ore concentrate of the dry magnetic separator to the high-pressure roller mill to crush the ore concentrate again, perform magnetic separation and discarding tailings of the ore concentrate below the vibrating sieve and the ore concentrate below the cylindrical sieve in a wet coarse grain intermediate-field intensity magnetic separator, and selecting the coarse ore concentrate of the intermediate-field intensity magnetic separator by a grinding separation technology. The invention has the advantages that the invention selects quantities of qualified mine tailings by wet magnetic separation before grinding ore, reduces ore grinding work, reduces ore grinding energy consumption and has high system processing capacity; the invention can be widely used in magnetic ore dressing plant, and in particular suitable for treatment of preselecting low-grade magnetic iron ore with the iron grade lower than or equal to 22%.

The invention discloses a nanometer high temperature resistant thermal insulation and prevention coating. SiO2 aerogel, modified potassium hexatitanate whisker, aluminum silicate fiber, ultra-fine cenosphere, nanometer TiO2 and nanometer Al2O3 are used as a thermal insulation filler. A vacuum thermal insulation layer is formed by nano porous structures of SiO2 aerogel and cenosphere. The aluminum silicate fiber is used as a reinforcing and toughening material. The infrared shading performance of potassium hexatitanate whisker, nanometer TiO2 and nanometer Al2O3 are used as a thermal radiation shielding layer. A silicon resin emulsion and an acrylic emulsion are compounded to be an adhesive. Therefore, the nanometer 600 DEG C temperature resistant thermal insulation and prevention coating is prepared with matching of a variety of functional additives. The nanometer high temperature resistant thermal insulation and prevention coating has the characteristics of scumbling, thermal insulation, waterproofing, anti-crack, anti-corrosion, high temperature resistance, weather-proofing, durability and the like and is applicable to the field of industrial high temperature resistant thermal insulation energy conservation.

The present invention discloses a bidirectional-rotating ball-milling ultra-fine crushing device and the method thereof. The device is arranged with a jacket which is provided with cooling water; a closed material storing warehouse which closes the feeding/discharging material opening is arranged at the lower end of the barrel body; a vacuum pumping valve which is connected with the vacuum pumping device is arranged at random feeding/discharging cover plate on the barrel body; and an inner lining is arranged at the inner surface of the barrel body. The bidirectional-rotating ball-milling ultra-fine crushing method is doing vacuum pumping to the inner side of the barrel body and actuating the transmission device to do ultra-fine crushing when the raw material above 80 mu is added into the barrel body, wherein the rotary speed of the barrel is 40 to 70 rotation/minute and the rotary speed of the inner rotating axle is 20 to 40 rotation/minute; the mass of the grinding ball gradation phi between 5 to 10mm accounts for 35% to 55% of the total grinding ball mass, phi between 10 to 20mm accounts for 25% to 35% of the total grinding ball mass and the phi between 20 to 30mm accounts for 20% to 35% of the total grinding ball mass; and the mass ratio of the material ball is 1:4 to 1:15. The invention has the advantages of short producing time, low energy consumption and reduced producing cost, and the invention overcomes the fine particle problems of easy aggregation to block and fusing-aggregation, etc.

The invention is a technique for strongly integrating a galvanized steel sheet and a resin molded article. A hot-dip galvanized steel sheet “Z18” is immersed in an aqueous solution for aluminum degreasing at 75° C. for 7 minutes, to form roughness having an RSm of 0.8 to 2.3 μm and an Rz of 0.3 to 1.0 μm on the surface. The surface is covered with convex protrusions having a diameter of about 100 nm, and a chromate treatment layer appears in the surface. In other words, three conditions suitable for bonding are satisfied thereby. A resin composition comprising 70 to 97 wt % of polyphenylene sulfide and 3 to 30 wt % of a polyolefin resin is injected onto the surface. The resin composition penetrates into ultra-fine irregularities and is cured in that state, whereby a composite in which the galvanized steel sheet and the resin molded article are strongly integrated is obtained. The shear rupture strength of the composite is extremely high, in excess of 20 MPa.

An innovative optical system and method is disclosed for analyzing and uniquely identifying high-order refractive indices samples in a diverse population of nearly identical samples. The system and method are particularly suitable for ultra-fine materials having similar color, shape and features which are difficult to identify through conventional chemical, physical, electrical or optical methods due to a lack of distinguishing features. The invention discloses a uniquely configured optical system which employs polarized sample light passing through a full wave compensation plate, a linear polarizer analyzer and a quarter wave retardation plate for producing vivid color bi-refringence pattern images which uniquely identify high-order refractive indices samples in a diverse population of nearly visually identical samples. The resultant patterns display very subtle differences between species which are frequently indiscernable by conventional microscopy methods. When these images are analyzed with a trainable with a statistical learning model, such as a soft-margin support vector machine with a Gaussian RBF kernel, good discrimination is obtained on a feature set extracted from Gabor wavelet transforms and color distribution angles of each image. By constraining the Gabor center frequencies to be low, the resulting system can attain classification accuracy in excess of 90% for vertically oriented images, and in excess of 80% for randomly oriented images.

A nonwoven fabric composed of ultra-fine continuous fibers having a mean fineness of not more than 0.5 dtex is prepared. The nonwoven fabric comprises a water-soluble thermoplastic resin in a proportion of not more than 5% by weight relative to the nonwoven fabric, has an absorbing height of not less than 30 mm as determined at 20° C. after 10 minutes based on Byreck method when the nonwoven fabric immersion-treated for 60 minutes in a water of 80° C. is used, and satisfies the following formula: (B)/(A)≧0.25, wherein the symbol (B) represents a tensile strength [N/5 cm] in the longitudinal direction and the lateral direction of the nonwoven fabric and the symbol (A) represents a fabric weight [g/m] of the nonwoven fabric. In the nonwoven fabric, not less than 30% of the surface may be coated with the water-soluble thermoplastic resin. The water-soluble thermoplastic resin may be a water-soluble thermoplastic polyvinyl alcohol, e.g., a modified polyvinyl alcohol containing an ethylene unit in a proportion of 3 to 20 mol %. The present invention provides a nonwoven fabric composed of ultra-fine continuous fibers, having a high flexibility or softness, and having a high mechanical strength even when the fiber diameter is small, and having an excellent water absorbency, as well as a production process and an application thereof.

The dielectric-forming composition according to the invention is characterized by consisting of: composite particles for dielectrics in which part or all of the surfaces of inorganic particles with permittivity of 30 or greater are coated with a conductive metal or a compound thereof, or a conductive organic compound or a conductive inorganic material; and (B) a resin component constituted of at least one of a polymerizable compound and a polymer. In addition, another dielectric-forming composition according to the invention is characterized by containing: ultrafine particle-resin composite particles composed of (J) inorganic ultra fine particles with the average particle size of 0.1 mum or smaller, and (B) a resin component constituted of at least one of a polymerizable compound and a polymer, wherein part or all of the surfaces of the inorganic ultrafine particles (J) are coated with the resin component (B), and the ultrafine particle-resin composite particles contain 20% by weight or more of the inorganic ultrafine particles (J); and inorganic particles with the average particle size of 0.1 to 2 mum and permittivity of 30 or greater, or inorganic composite particles in which a conductive metal or a compound thereof, or a conductive organic compound or a conductive inorganic material is deposited on the part or all of the surfaces of the inorganic particles.

The invention relates to an anti-oil and fire-retardant chlorinated polyethylene sheath material with good weather resistance and a preparation method thereof. The sheath material uses chlorinated polyethylene rubber as main raw material and adds chlorosulfonated polyethylene rubber, triallyl isocyanurate, 1,3-bis (tert-butyl peroxide isopropyl) benzene, trioctyl trimellitate, carbon black, antioxidant 1010, ultra-fine talc powder, antimony trioxide, and high-activity magnesium oxide R-150 according to ratios; the preparation method is as follows: at first, mixing part of the auxiliary agents, then mediating, internal mixing, open mixing, granulating and extruding are carried out on the mixture to form cables, thus the cables are obtained. In the formula, high temperature resistant plasticizer is utilized, various auxiliary agents with appropriate proportions are added into the formula, so that chlorinated polyethylene rubber cable material can reach a high temperature of 105 DEG C, and can be used at the lowest temperature of minus 50 DEG C. The sheath material has the advantages of good anti-aging property, excellent electrical insulation and mechanical property, environmental protection and high flame resistance, thereby being suitable for cold and oil-contaminated severe environment and transmission and distribution circuits of which the current-carrying capacities are large and the rated voltages are at or below 450/750V. Meanwhile, compared with traditional chloroprene rubber cable material, the sheath material has the characteristics of low cost, fast extruding speed and high output benefit.

This invention relates to a suede-like artificial leather using ultra-fine polyester fibers and a polyurethane, and provides a suede-like artificial leather free from the occurrence of specking and having graceful surface appearance and high light fastness. The suede-like artificial leather comprising a fiber-entangled substrate mainly containing ultra-fine polyester fibers with a fiber fineness of 0.7 dtex or less and a polyurethane, and is dyed, and is wherein said polyurethane contains at least one each of yellow pigments, red pigments and blue pigments, and that said artificial leather satisfies all of the following properties (1) through (3) as measured by the methods described in the specification; (1) The infrared reflectance at 850 nm is 60% or more; (2) The surface temperature during light irradiation is 105° C or lower; (3) The light fastness is class 3 or better. Especially since the suede-like artificial leather of this invention has high light fastness, it can be most suitably used for car seats.

The invention provides a kind of super imitation cotton polyester filament, comprising polyester FDY yarn and superfine polyester POY yarn, polyester FDY yarn and superfine polyester POY yarn are composited together through false twist deformation processing, and the polyester FDY yarn has a fineness of 0.5-1.5D, semi-dull polyester FDY yarn with elongation at break of 25%-35%, the semi-dull polyester FDY yarn is a tow composed of several monofilaments, and the cross-sectional shape of the monofilament is cross-shaped; Superfine polyester POY yarn is full-dull superfine polyester POY yarn, the fineness of the full-dull superfine polyester POY yarn is 0.5-1.5D, and the elongation at break is 100%-135%. It is a tow composed of several monofilaments, and the cross-sectional shape of the monofilaments is circular. The beneficial effect of the present invention is that its softness, water absorption, moisture permeability and quick-drying property are all superior to those of pure cotton fiber, which can achieve the purpose of replacing cotton fiber, greatly reducing the dependence of the textile industry on natural cotton, and alleviating The problem of shortage of cotton resources.

A polycrystalline diamond compact for use in cutting operations with a renewable sharp cutting edge, high abrasion resistance and high impact strength. The polycrystalline diamond is a composite composed of a matrix of coarse diamond interspersed with large agglomerated particles of ultra fine diamond. The agglomerated particles produce sharp cutting edges that are protected from impact forces by the overall uniform matrix of coarse diamond crystals. The self-sharpening cutter is highly resistant to spalling and catastrophic fracture.