67 results about "Carbon group" patented technology

A low-k precursor reactant compound containing silicon and carbon atoms is flowed into a CVD reaction chamber. High-frequency radio-frequency power is applied to form a plasma. Preferably, the reaction chamber is part of a dual-frequency PECVD apparatus, and low-frequency radio-frequency power is applied to the reaction chamber. Reactive components formed in the plasma react to form low-dielectric-constant silicon carbide (SiC) on a substrate surface. A low-k precursor is characterized by one of: a silicon atom and a carbon—carbon triple bond; a silicon atom and a carbon—carbon double bond; a silicon—silicon bond; or a silicon atom and a tertiary carbon group.

The invention relates to a method for increasing the yield of propylene, and mainly solves the problem that the yield of carbon groups of the propylene is low in the prior art. In the invention, the problem is better solved by the technical scheme that three reaction zones are set, the first fast bed reaction zone is used for preparing olefin through methanol transformation, and the riser reaction zone and the second fast bed reaction zone are connected in series and used for transforming ethylene, hydrocarbons above C4 and unreacted methanol or dimethyl ether; and the technical scheme can be used for the industrial production of low-carbon olefin.

An organic electroluminescence device includes an organic layer disposed between at least one pair of electrodes, wherein the organic layer includes at least one fluorescent compound selected from compounds represented by the following general formulae (1) and (2):

The invention relates to a method for preparing a carbon nano tube enhanced titanium-base compound material by in-suit reaction in order to solve the problems of low uniform dispersion and low structural completeness of a carbon nano tube in the conventional method for preparing the carbon nano tube enhanced titanium-base compound material and pollution to the titanium-base material caused by reaction of a carbon group and a titanium base body. The method comprises the following steps of: adding nickel nitrate hexahydrate and TiH2 powder into an ethanol solution, stirring and evaporating to obtain Ni-TiH2 compound powder; paving the Ni-TiH2 compound powder in a quartz boat, putting the quartz boat into deposition equipment, feeding H2, raising temperature, feeding CH4, and after the deposition is finished, stopping feeding the CH4 so as to obtain carbon nano tube/TiH2 compound power; pressing the carbon nano tube/TiH2 compound power into a block body, sintering, and re-pressing to obtain the carbon nano tube enhanced titanium-base compound material. Carbon nano tubes in the compound material are uniform to disperse and cannot be aggregated; the compound material is high in purity and has a complete structure; and reaction between the titanium and the defected carbon nano tube can be avoided.

A lubricant composition comprising a compound represented by the following formula that can maintain a low friction and a high abrasion resistance on the sliding surface over an extended period of time:

wherein D represents a cyclic group; X's each independently represent a single bond, an NR¹ group (in which R¹ represents a hydrogen atom or a C₁-C₃₀ alkyl group), an oxygen atom, a sulfur atom, a carbonyl group, a sulfonyl group or a divalent linking group comprising these groups in combination; R's each independently represent an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group; m represents an integer of from 2 to 11; and at least one of m groups of R's contains a partly fluorinated hydrocarbon group or a fluorinated carbon group.

The invention pertains to a (per)fluoroelastomer composition comprising:

• at least one (per)fluoroelastomer [fluoroelastomer (A)]; and
• from 0.1 to 30 weight parts, per hundred parts of fluoroelastomer (A), of at least one perfluoropolyether block copolymer [polymer (E)] comprising:
• A) one or more (per)fluoropolyoxyalkylene segment (chain R_t), that is to say a segment comprising recurring units having at least one catenary ether bond and at least one fluorocarbon moiety, and
• B) one or more polyalkylene segment (chain R_a) comprising recurring units of formula:

—(CR₁R₂—CR₃R₄)—

• wherein R₁, R₂, R₃, R₄, equal to or different from each other, are selected from the group consisting of H, halogens (preferably F, Cl); C₁-C₆ (hydro)carbon groups, optionally containing fluorine or other heteroatoms, preferably perfluoroalkyl or (per)fluorooxyalkyl.

The invention relates to a preparation method of a superconductive, thermally-conductive, ultrahigh-strength graphene composite film, which comprises the following steps: step 1, mixing 10%-80% by mass of nanometer graphene and 20%-90% by mass of liquid or powdery bridging carbon groups in a nitrogen-filling mixer at room temperature for 1-10 hours; step 2, pumping the mixed materials into a heating box by a vacuum pump, heating the materials to 100-500 DEG C for 1-20 hours; step 3, after heating, allowing the mixed materials to fall freely into a material distribution zone, uniformly spreading out the mixed materials by a scraper and a material-distributing roller, feeding the materials into a pre-press roller with a controlled pressure of 0.1-1.0 Mpa, pressing the materials tightly with several groups of press rollers so as to pull out a composite film with a thickness less than 100 microns; step 4, scanning the composite film line by line through a laser beam, an electron beam or an ion beam to allow the temperature of the scanned part of the composite film to be above 3000 DEG C so as to realize carbonization, graphitization, crystal growth, and the perfect combination of the molecular skeleton of nanometer graphene and the molecular skeleton of the bridging carbon groups; step 5, trimming the scanned composite film and rolling up. The invention has simple and compact steps, and can realize production with high efficiency by one continuous apparatus.

A composition useful for imparting durable stain repellence and soil release properties to textile substrates, a method for treating textile substrates using such composition, and the textile substrates obtained therefrom. The composition comprises: (A) at least one fluorinated ionisable polyurethane polymer (PUR) being free from perfluoroalkyl chains and comprising at least one fluorinated block comprising a fluoropolyoxyalkene chain, and at least one functional block comprising an hydrocarbon chain (R_HC) having from 2 to 14 carbon atoms, said chain (R_HC) comprising at least one ionisable group, said blocks being linked by urethane moieties of formula (I),

wherein E is a divalent hydrocarbon carbon group; (B) at least one fluorocarbon polymer (F) comprising at least one perfluoroalkyl chain (R_f) linked by one or more ester moiety of formula (II) and/or urethane moiety of formula (III) and/or urea moiety of formula (IV); and (C) at least one crosslinking agent.

The invention discloses a double-carbon-confined iridium nanocluster catalyst and a preparation method and application thereof. The double-carbon-confined iridium nanocluster catalyst is a composite material formed by dispersing iridium nanodots on a carbon matrix, and the carbon matrix is graphene oxide and S-doped mesoporous carbon. Ultra-small nano-sized iridium nanoclusters are prepared through the double confinement effect of two carbon groups, and the aggregation of iridium nano-particles can be effectively prevented. The finally obtained catalyst has large specific surface area, the active sites of the catalyst are increased, the overpotential and Tafel slope of electrolytic water reaction are greatly reduced, the performance of the catalyst is effectively improved, and the catalysthas long service life and good stability. In addition, the preparation method of the catalyst is simple, the raw materials are cheap and readily available, the reserves are abundant, the preparationprocess is simple and easy to operate, and the catalyst is a catalyst with practical value for electrolyzed water.

A film structure for absorbing electromagnetic wave and manufacturing method thereof is provided. The multilayer film structure is composed of a plurality of polymer films and a plurality of permeability films. The polymer films have a multi-film stacking structure and the polymer films are composed of a carbon group compound structure. The permeability films are formed on each surface of the polymer films. Thus, every neighboring permeability films will have magnetic moments in opposite direction, and all the emitted electromagnetic waves will be cancelled by the permeability films, or be reflected in any one of the polymer films until the energies of the electromagnetic waves are consumed, or be absorbed by the carbon group compound structure and be transferred into thermal energy.