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30530 results about "Carbon black" patented technology

Carbon black (subtypes are acetylene black, channel black, furnace black, lamp black and thermal black) is a material produced by the incomplete combustion of heavy petroleum products such as FCC tar, coal tar, or ethylene cracking tar. Carbon black is a form of paracrystalline carbon that has a high surface-area-to-volume ratio, albeit lower than that of activated carbon. It is dissimilar to soot in its much higher surface-area-to-volume ratio and significantly lower (negligible and non-bioavailable) polycyclic aromatic hydrocarbon (PAH) content. However, carbon black is widely used as a model compound for diesel soot for diesel oxidation experiments. Carbon black is mainly used as a reinforcing filler in tires and other rubber products. In plastics, paints, and inks, carbon black is used as a color pigment.

Carbon black

A carbon black with organic groups in which the organic groups are linked to the black via a sulfide- and / or polysulfide bridge. Furthermore, a method of producing the black of the invention is described in which carbon black and compounds of the general formula R-Sy-R are reacted. The carbon blacks of the invention can be used as filler, UV stabilizer, conductivity black and pigment.
Owner:DEGUSSA AG

Ink, ink-jet recording process, recording unit, ink cartridge and ink-jet recording apparatus

An ink comprising particles of self-dispersing carbon black having at least one hydrophilic group at the surface thereof, and calcium in an aqueous medium. The ink can form images excellent in fastness properties such as water fastness and light fastness and character quality, and can be stably ejected from a recording head irrespective of printing environment.
Owner:CANON KK

Preparation method of wet process mixed natural rubber material

The invention relates to a preparation method of a wet process mixed natural rubber material. The method comprises the following steps of: preparing slurry and soaking 15-40 percent of dry white carbon black in 60-85 percent of deionized water; adding a coupling agent and a surfactant, uniformly mixing, grinding, preparing latex mixed liquor, extracting natural latex and adding white carbon black water dispersoid into the latex; stirring and mixing to obtain a latex mixed liquor, flocculating and adding acetic acid into the mixed liquor; performing rubber washing and dehydration by using a rubber washing machine and feeding to a rubber pelletizer for pelletizing; and feeding rubber particles into a box drying cabinet for drying. The preparation method has the advantages of simple machining process, small equipment investment, realization of various ideal performances with the most ordinary white carbon black, low dust pollution in the entire production process and energy saving. A tire manufactured with the method has small rolling resistance, low heat generation, high tensile strength, high tearing strength and high rubber material ageing resistance. Mixing of the white carbon black is performed in a liquid phase, so that the dispersivity and uniformity are enhanced.
Owner:ZHUZHOU ANBAOLINFENG NEW MATERIALS

Drilling fluid, drill-in fluid, completition fluid, and workover fluid additive compositions containing thermoset nanocomposite particles; and applications for fluid loss control and wellbore strengthening

In one aspect, this invention relates to the use of thermoset nanocomposite particles as components of drilling fluid, drill-in fluid, completion fluid, and workover fluid additive packages to reduce fluid losses to a formation and / or to enhance a wellbore strength. In another aspect, this invention relates to the use particles of specific gravity ranging from about 0.75 to about 1.75 as components of drilling fluid, drill-in fluid, completion fluid, and workover fluid additive packages to reduce fluid losses to a formation and / or to enhance a wellbore strength. Using embodiments of the invention, reduction of fluid loss and / or enhancement of wellbore strength may be achieved while working with water-based, oil-based, invert emulsion, or synthetic drilling muds. The currently most preferred embodiments of the invention use substantially spherical thermoset nanocomposite particles, possessing a specific gravity from approximately 1.02 to approximately 1.15 wherein the matrix is a terpolymer of styrene, ethylvinylbenzene and divinylbenzene, and wherein carbon black particles possessing a length that is less than about 0.5 microns in at least one principal axis direction are incorporated as a nanofiller.
Owner:SUN DRILLING PRODS

Process for abstracting earth silicon, oxide of alumina and gallium oxide from high-alumina flying ash

A method for extracting silicon dioxide, alumina and gallium oxide from high-alumina fly ash relates to the technology fields of environmental mineralogy and material, chemical industry and metallurgy. The method comprises the main steps as follows: causing the high-alumina fly ash to react with sodium hydroxide solution; filtering the solution; introducing CO2 to the filtrate for full gelation; cleaning, purifying, drying, grinding and calcining the silica gel after gel filtration to obtain finished white carbon black; adding limestone and a sodium carbonate solution into the filter mass after the reaction and filtration of the high-alumina fly ash and the sodium hydroxide solution; ball grinding the mixture into raw slurry; dissolving out the clinker obtained by baking the raw slurry; subjecting the filtrate to deep desiliconization to obtain sodium aluminate extraction liquid; filtrating the sodium aluminate extraction liquid after subjecting the sodium aluminate extraction liquid to carbon dioxide decomposition; baking the aluminum hydroxide after washing the filter mass to form the aluminum hydroxide product; and extracting the gallium oxide from the carbon dioxide decomposition mother solution and desiliconized solution. The method has the advantages of low material price, simple operating procedures, low investment, low production cost, low energy consumption and less slag.
Owner:TSINGHUA UNIV +1

Array type ultra-thin submissive force sensor and preparation method thereof

The invention relates to an array-type compliant force sensor and a method of preparation thereof, and belongs to the technical field of a force sensor. The sensor comprises upper and lower poles which are enclosed into one piece, and a conduction macromolecule sensitive film compressed between the poles, and a front end circuit connected with the upper and lower poles through signal lines. The conduction macromolecule sensitive film primarily adopts the conduction macromolecule sensitive film having the compressive resistance effect consisting of graphitized carbon black as the conduction phase, single-component silastic as the insulation phase, and nanometer SiO2 dispersant. The upper and lower poles are a plurality of poles made on the substrate of the film by making use of flexible printed circuit board process and signal lines connected with each strip-shaped pole. The upper and lower strip-shaped poles are crossed and constitute an N*N sensitive cell array with the conduction macromolecule sensitive film. The signal lines are gathered to form led-out closely spaced cables. The invention has the characteristics of fine and thin structure, good flexibility, large range, high precision and high resolution.
Owner:TSINGHUA UNIV

Interpenetrating networks of carbon nanostructures and nano-scale electroactive materials

An interpenetrating network assembly with a network of connected flakes of nano-scale crystalline carbon and nano-scale particles of an electroactive material interconnected with the carbon flakes is provided. The network assemblies are particularly suited for energy storage applications that use metal oxide electroactive materials and a single charge collector or a source and drain. Interpenetrating networks of graphene flakes and metal oxide nanosheets can form independent pathways between source and drain. Nano-scale conductive materials such as metal nanowires, carbon nanotubes, activated carbon or carbon black can be included as part of the conductive network to improve charge transfer.
Owner:RGT UNIV OF CALIFORNIA
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