Abstract: This invention relates to a fiber reinforced plastic material with improved flexibility and high tensile strength for use in optic cables. The strength member composition comprises a polypropylene based thermoplastic resin, a continuous fiber having a modulus greater than 80 PGa, and talc.

Abstract: The resin-reinforcing fiber of the preset invention is a fiber surface-treated with an epoxidized polydiene resin. The fiber is preferably carbon fiber or glass fiber. The fiber-reinforced resin composite material of the present invention comprises the resin-reinforcing fiber and a matrix resin. The matrix resin is preferably an epoxy thermosetting resin. The resin-reinforcing fiber of the present invention can improve the absorbed energy up to the maximum load (elastic energy) of a fiber-reinforced resin composite material and the absorbed energy after the maximum load (propagation energy) thereof at the same time.

Abstract: An aggregate of carbon-based fine structures in which a plurality of carbon-based fine structures are collected, wherein respective carbon-based fine structures are oriented in the same direction. The above aggregate of carbon-based fine structures is an aggregate of a plurality of carbon-based fine structures in a state they are pulled by one another with strong interaction, and has such a length that allows the improvement of the handleability and workability thereof.

Abstract: The present invention relates to a continuous, multicellular, hollow carbon fiber wherein the fiber structure includes a substantially hollow fiber and multiple internal walls defining multiple integral internal hollow fibers such that the fiber structure comprises a honeycomb-like cross section.

Abstract: There is provided a fiber and method of making a fiber. The fiber has an inner-volume portion having a first outer diameter, a plurality of nanostructures, and one or more first polymers. The nanostructures act as an orientation template for orientation of the one or more first polymers in a direction parallel to a longitudinal axis of the fiber. The fiber has an outer-volume portion having a second outer diameter and one or more second polymers. The outer-volume portion is in contact with and completely encompasses the inner-volume portion. The inner-volume portion has at least one of a tensile modulus and a strength that are higher than at least one of a tensile modulus and a strength of the outer-volume portion.

Abstract: A method of making scrolls is provided that includes providing a tape having a first side and second side wherein the first side of the tape is has an adhesive disposed thereon and the second side of the tape has a release coating disposed thereon, affixing the adhesive to a solid surface, buff-coating exfoliatable particles on the release side of the tape to form a coating; and peeling the tape from the solid surface at an angle. The coating separates from the release side of the tape and curls inwards to form scrolls. The scrolls can include graphite. Also provided is a continuous method of making scrolls and an apparatus.

Abstract: In one example, a method includes defibrillating at least one carbon fiber to form a plurality of carbon fiber filaments, melting pitch to form molten pitch, and mixing the plurality of carbon fiber filaments and the molten pitch to form a substantially homogeneous mixture of carbon fiber filaments. In another example, a method includes mixing a plurality of carbon fiber filaments having a length between about 6.35 millimeters and about 50.8 millimeters in molten pitch to form a substantially homogeneous mixture of carbon fiber filaments within the molten pitch, wherein mixing the plurality of carbon fiber filaments does not substantially change an average length of the plurality of carbon fiber filaments.

Abstract: An object of the present invention is to provide a graphite film, and a graphite composite film both having an excellent thermal diffusivity which can sufficiently manage heat dissipation of electronic instruments, precision instruments and the like, along with an excellent flex resistance which can withstand application to bent portions. Means for Resolution of the present invention is a graphite film exhibiting the number of reciprocal foldings being 10,000 times or more as measured using a rectangular strip test piece having a width of 15 mm until the test piece breaks in a MIT folding endurance test under conditions of: a curvature radius R of the bending clamp being 2 mm; a left-and-right bending angle being 135°; a bending rate being 90 times/min; and a load being 0.98 N.

Abstract: A carbon fiber bundle includes carbon fibers and a copolymerized polyolefin attached to the surface of the carbon fibers. The copolymerized polyolefin contains an aromatic vinyl compound and an acid and/or acid anhydride as copolymerization components. The amount of the copolymerized polyolefin attached is 0.01 to 10 parts by mass per 100 parts by mass of the carbon fiber bundle. The carbon fiber bundle may be used or contained in a random mat, a composite material, and various molded articles.

Abstract: Highly dispersed lithium titanate crystal structures having a thickness of few atomic layers level and the two-dimensional surface in a plate form are supported on carbon nanofiber (CNF). The lithium titanate crystal structure precursors and CNF that supports these are prepared by a mechanochemical reaction that applies sheer stress and centrifugal force to a reactant in a rotating reactor. The mass ratio between the lithium titanate crystal structure and carbon nanofiber is preferably between 75:25 and 85:15. The carbon nanofiber preferably has an external diameter of 10-30 nm and an external specific surface area of 150-350 cm2/g. This composite is mixed with a binder and then molded to obtain an electrode, and this electrode is employed for an electrochemical element.

Abstract: A carbon nanopipe comprising a durable graphitizable carbon wall of tunable thickness of about 10-500 nm formed by exposing a silica fiber network to a carbon precursor vapor and thereby depositing a carbon film onto the silica fiber network at a temperature suitable for complete pyrolysis of the carbon precursor and removing the silica fibers. The atmosphere of the step of depositing is controlled by a two-stage gas manifold wherein stage 1 purges the reaction chamber with pure argon and stage 2 introduces the carbon precursor.

Abstract: The present invention relates to a continuous, carbon fiber with nanoscale features comprising carbon and carbon nanotubes, wherein the nanotubes are substantially aligned along a longitudinal axis of the fiber. Also provided is a polyacrylonitrile (PAN) precursor including about 50% to about 99.9% by weight of a melt-spinnable PAN and about 0.01% to about 10% of carbon nanotubes. Other precursor materials such as polyphenylene sulfide, pitch and solution-spinnable PAN are also provided. The precursor can also include a fugitive polymer which is dissociable from the precursor polymer.

Abstract: Exemplary embodiments provide an intermediate transfer member used for electrophotographic devices, wherein an outermost layer of the intermediate transfer layer can include a plurality of fluoroelastomer-coated carbon nanotubes dispersed in a fluoroplastic matrix to provide desirable surface properties useful for the intermediate transfer member.

Abstract: A method for manufacturing an inorganic-nano structure composite, a method for manufacturing a cabon nanotube composite by using the same, and a carbon nanotube composite manufactured by the same are provided. The method for manufacturing the inorganic-nano structure composite comprises a step of doping pentavalent elements on the nanostructure; and a step of growing the inorganic material from the doping points of the pentavalent elements by dipping the nanostructure on which the pentavalent elements are doped into a precursor solution of the inorganic material, and according to the present invention the pentavalent elements such as nitrogen are doped on the nanostructure and is utilized as the crystallization point of the inorganic material, instead of forming the separate coating layer to the organic-based nanostructure, or binding the binding group to the surface.

Abstract: Methods for the preparation of carbon fiber from polyolefin fiber precursor, wherein the polyolefin fiber precursor is partially sulfonated and then carbonized to produce carbon fiber. Methods for producing hollow carbon fibers, wherein the hollow core is circular- or complex-shaped, are also described. Methods for producing carbon fibers possessing a circular- or complex-shaped outer surface, which may be solid or hollow, are also described.

Abstract: Systems and methods for the formation of nanostructures, including carbon-based nanostructures, are generally described. In certain embodiments, substrate configurations and associated methods are described.

Abstract: A method of dispersing a metal or metal oxide within a CNT or CNT array, comprising exposing the CNT or CNT array to a solution containing a metal compound in a non-aqueous liquid; and removing the non-aqueous liquid from the CNT or CNT array. Nanoparticles were homogenously deposited within millimeter-long carbon nanotube array (CNTA). After modified with nanoparticles, CNTA changes from hydrophobic to hydrophilic. The hydrophilic composite electrodes present ideal capacitive behavior with high reversibility. The novel, nano-architectured composite demonstrates strong promise for high-performance thick and compact electrochemical supercapacitors.

Abstract: Inorganic particulate or whiskers are surface-treated to facilitate receptivity to covalent bonding with a coupling agent. Surface treatment forms reactive groups that enable the inorganic particulate or whiskers to covalently bond to a reactive group of the coupling agent. The coupling agent also contains organofunctional groups, which in some examples may be covalently bonded to a polymer matrix by way of crosslinking or by co-polymerizing the functionalized particulate or whiskers together with polymer precursors. The resulting polymeric materials exhibit markedly improved abrasion resistance as well as other improved properties.

Abstract: Disclosed are aqueous size compositions for inorganic fibers which is based on a specific polymeric film former composition comprising A) at least one low molecular weight polyvinylacetate and/or at least one middle molecular weight polyvinylacetate, and B) at least one low viscosity partially hydrolysed polyvinyl alcohol C) the weight ratio of A) to B) is between 0.5 and 3.0. Also disclosed are fiber strands and fibers having such a sizing thereon, and their use for making hydraulic set board comprising a hydraulic set cement or gypsum core and reinforcing inorganic fibers coated with the dried sizing composition of the invention.

Abstract: Conductive nonwoven webs are disclosed. The nonwoven webs contain pulp fibers combined with conductive fibers. In one embodiment, the webs are made in a wetlaid tissue making process.

Abstract: A fine carbon fiber having linearity, each fiber filament of the carbon fiber having a bending angle of 30° or less with respect to the longitudinal direction of the fiber filament, and including a hollow space extending along its axis, and having an outer diameter of 1 to 1,000 nm, an aspect ratio of 5 to 1,000, and a BET specific surface area of 2 to 2,000 m2/g, wherein the average interlayer distance (d002) of the carbon fiber at a (002) plane is 0.345 nm or less as measured by means of X-ray diffractometry, and the ratio of the peak height (Id) of the band at 1,341 to 1,349 cm?1 in a Raman scattering spectrum of the carbon fiber to that of the peak height (Ig) of the band at 1,570 to 1,578 cm?1 in the spectrum (Id/Ig) is 0.1 to 2. The fiber exhibits excellent dispersibility in a matrix.

Abstract: Provided are a graphite material suitable as an electrode material for nonaqueous electrolyte secondary batteries, a carbonaceous material for battery electrodes, and secondary batteries which exhibit excellent charge-discharge cycle characteristics and excellent severe-current-load characteristics. A graphite material which has specific sizes of optically anisotropic and isotropic structures, a specific content ratio between both structures, and various orientation of crystallization; and a carbonaceous material for battery electrodes which is made using the graphite material and which exhibits a large discharge capacity and a small irreversible capacity with the severe-current-load characteristics and cycle characteristics being kept at high levels.

Abstract: Disclosed is a hybrid porous carbon fiber and a method for fabrication thereof. Such fabricated porous carbon fibers contain a great amount of mesopores as a porous structure readily penetrable by electrolyte. Accordingly, the hybrid porous carbon fibers of the present disclosure are suitable for manufacturing electrodes with high electric capacity.

Abstract: The present invention relates to carbon nanofibers, and more particularly, to a method capable of preparing metal oxide-containing porous carbon nanofibers having a high specific surface area by changing the composition of a spinning solution, which is used in a process of preparing carbon nanofiber by electrospinning, and to metal oxide-containing porous carbon nanofibers prepared by the method, and carbon nanofiber products comprising the same.

Abstract: Disclosed are an inorganic fiber for fiber bundles which suppresses a decrease in the fiber strength due to damage of the fiber during the production of an inorganic fiber bundle for composite materials, avoids contact between the fibers in a fiber bundle during the production of a composite material, and is capable of forming an interface layer with the matrix over the entire surface of the fibers, a method for producing the inorganic fiber for the fiber bundles, and a ceramic-based composite material which uses an inorganic fiber bundle for composite materials including the inorganic fiber for fiber bundles, as a reinforcing fiber and a ceramic as a matrix, and exhibits sufficient strength, sufficient fracture energy and excellent durability when the composite material is subjected to stress in a high temperature oxidizing atmosphere.

Abstract: A method for growing a graphene nanoribbon on an insulating substrate having a cleavage plane with atomic level flatness is provided, and belongs to the field of low-dimensional materials and new materials. The method includes the following steps. Step 1: Cleave an insulating substrate to obtain a cleavage plane with atomic level flatness, and prepare a single atomic layer step. Step 2: Directly grow a graphene nanoribbon on the insulating substrate having regular single atomic steps. In the method, a characteristic that nucleation energy of graphene on the atomic step is different from that on the flat cleavage plane is used, and conditions, such as the temperature, intensity of pressure and supersaturation degree of activated carbon atoms, are adjusted, so that the graphene grows only along a step edge into a graphene nanoribbon of an adjustable size. The method is mainly applied to the field of new-type graphene optoelectronic devices.

Abstract: Techniques for manufacturing an enhanced carbon nanotube (CNT) wire are provided. In one embodiment, an enhanced CNT wire may be manufactured by immersing a metal tip into a CNT colloidal solution, withdrawing the metal tip from the CNT colloidal solution, and then coating the CNT wire with a polymer.

Abstract: The invention is directed to a method of positioning nanoparticles on a patterned substrate. The method comprises providing a patterned substrate with selectively positioned recesses, and applying a solution or suspension of nanoparticles to the patterned substrate to form a wetted substrate. A wiper member is dragged across the surface of the wetted substrate to remove a portion of the applied nanoparticles from the wetted substrate, and leaving a substantial number of the remaining portion of the applied nanoparticles disposed in the selectively positioned recesses of the substrate. The invention is also directed to a method of making carbon nanotubes from the positioned nanoparticles.

Abstract: The invention relates to a method for producing a polysilane-polycarbosilane copolymer solution from which a ceramic material having a ratio of silicon to carbon in the range of 0.8:1.0 to 1.1:1.0 can be obtained after removal of the solvent and pyrolysis, comprising the following steps: generating a chloric raw polysilane/oligosilane containing hydrocarbon groups by means of disproportioning a methylchlorodisilane or a mixture of a plurality of methylchlorodisilanes of the composition Si2MenCl6-n, where n=1-4, wherein the disproportioning takes place by means of a Lewis base as a catalyst, thermally post-cross-linking the raw polysilane/oligosilane into a non-melting polysilane-polycarbosilane copolymer that is soluble in a neutral solvent, and producing said solution by means of dissolving the polysilane-polycarbosilane in a neutral solvent.

Abstract: A device for making a carbon nanotube film includes a substrate and a catalyst layer on the substrate. The catalyst layer has two substantially parallel sides. The present disclosure also provides a method for making a carbon nanotube film. The catalyst layer is annealed at a high temperature in air. The annealed catalyst layer is heated up to a predetermined reaction temperature in a furnace with a protective gas therein. A carbonaceous gas is supplied into the furnace to grow a carbon nanotube array having two substantially parallel side faces. A carbon nanotube film is drawn from the carbon nanotube array. A drawing direction is substantially parallel to the two substantially parallel side faces of the carbon nanotube array.

Abstract: A method for producing ceramic fibers of a composition in the SiC range, starts from a spinning material that contains a polysilane-polycarbosilane copolymer solution. The spinning material is extruded through spinnerets in a dry spinning method and spun through a spinning duct into green fibers, and the green fibers are subsequently pyrolyzed. Accordingly, the polysilane-polycarbosilane solution contains between 75 wt. % and 95 wt. %, in particular between 80 and 90 wt. %, of an indifferent solvent, and the spinnerets have a capillary diameter between 20 and 70 ?m, in particular between 30 and 60 ?m, in particular between 40 and 50 ?m.

Abstract: Disclosed is a carbon-fiber chopped strand, and a manufacturing method of the same. The carbon-fiber chopped strand is composed of single filaments composed of 30,000-120,000 carbon fibers, and a sizing agent content 1-10% by weight that bundles the single filaments; the ratio of maximum diameter (Dmax) in the cross section and minimum diameter (Dmin) is 1.0-1.8, a length along a fiber direction is 3-10 mm, and a repose angle of 10-30°.

Abstract: A spliced fiber tow (40) having a uniform density along its entire length is provided. The spliced fiber tow is manufactured by rarefying the ends (22, 32) of the two fiber tow segments to be joined, aligning the rarefied regions (26, 36) and then applying pressurized gas to entangle the filaments in the rarefied regions. An apparatus (50) for forming the spliced fiber tow includes a pair of rarefying blades (86, 92) and an entanglement element (58).

Abstract: A process of forming a semiconductive carbon nanotube structure includes imposing energy on a mixture that contains metallic carbon nanotubes and semiconductive carbon nanotubes under conditions to cause the metallic carbon nanotubes to be digested or to decompose so that they may be separated away from the semiconductive carbon nanotubes.

Abstract: Provided is a fiber composite for the application of a liquid, including a fibrous member containing a porous carbon material having a specific surface area value by the nitrogen BET method of 10 m2/g or more, and a pore volume by the BJH method of 0.2 cm3/g or more.

Abstract: A carbon fiber composite material having an elastomer and vapor-grown carbon fibers dispersed in the elastomer. The vapor-grown carbon fibers are rigid fibers having an average diameter of 20 to 200 nm, an average length of 5 to 20 micrometers, and an average value of bending indices defined by the following expression (1) of 5 to 15, Bending index=Lx÷D??(1) Lx: length of linear portion of the vapor-grown carbon fiber, and D: diameter of the vapor-grown carbon fiber. The carbon fiber composite material has a dynamic modulus of elasticity (E?) at 150° C. of 30 MPa or more and an elongation at break (EB) of 140% or more.

Abstract: The present disclosure relates to a manufacturing method of a graphene fiber, a graphene fiber manufactured by the same method, and use thereof. The graphene fiber formed by using graphenes of linear pattern can be applied to various fields such as an electric wire and coaxial cable.

Abstract: The present invention relates to a method of fabricating a carbon material and, more particularly, to a method for fabricating graphite having a nano-ribbon shape (hereinafter, referred to as a ‘graphene-controlled nano-graphite’) through a heat treatment of graphene nano-powders, and a graphene-controlled nano-graphite fabricated through the method. The method for fabricating graphene-controlled nano-graphite includes a preparation step of preparing graphene powders and a fabrication step of fabricating graphene-controlled nano-graphite through heat treatment of the graphene powders. The graphene powder may be fabricated by disintegrating crystalline graphite.

Abstract: Permeable composite fibrous catalytic sheets comprised of at least three distinct solid phases. A first solid phase is an electrically conductive phase comprised of randomly oriented electrically conductive carbon fibers. A second solid phase is a 3-dimensional porous network of a non-conductive porous ceramic material. A third phase is comprised of catalytic particles dispersed on said 3-dimensional porous network.

Abstract: A method for producing carbon-containing fibers, in particular carbon fibers and/or the precursor fibers thereof, contains the following steps: a) providing one or more starting material fibers; b) bringing the one or more starting material fibers in contact with at least one treatment fluid, wherein a treatment fluid has at least one silicon compound and has a content of 0-25 wt. % water, in relation to the total weight of the treatment fluid; c) treating the one or more starting material fibers with the treatment fluid during a treatment time having a duration of at least three minutes at a treatment temperature ranging from 126 C to 450 C.

Abstract: A method for fabricating a continuous vapor grown carbon fiber, comprising: (a) providing a substrate which has a catalyst on its surface; (b) placing said substrate in a furnace; (c) loading said furnace with hydrogen, ammonia, or combinations thereof; (d) adjusting a temperature of said furnace to 400° C. to 900° C. to proceed heat treatment for 10 minutes to 2 hours; (e) adding a carbon-containing compound into said furnace; (f) adjusting the ratio of said carbon-containing compound and said hydrogen, ammonia, or combinations thereof; (g) adjusting the temperature of said furnace to 500° C. to 1200° C. to crack said carbon-containing compound, and thereby form a carbon fiber.

Abstract: Methods and devices relating to diodes including single-wall carbon nanotubes (SWCNT) are disclosed according to embodiments of the present invention. According to one embodiment, a diode may include one or more SWCNTs. The SWCNTs may be grouped together in multiple bundles with the SWCNTs being generally aligned parallel to each other in the bundles.

Abstract: Disclosed is a ribbon of graphene less than 3 nm wide, more preferably less than 1 nm wide. In a more preferred embodiment, there are multiple ribbons of graphene each with a width of one of the following dimensions: the length of 2 phenyl rings fused together, the length of 3 phenyl rings fused together, the length of 4 phenyl rings fused together, and the length of 5 phenyl rings fused together. In another preferred embodiment the edges of the ribbons are parallel to each other. In another preferred embodiment, the ribbons have at least one arm chair edge and may have wider widths. The invention further comprises a method of making a ribbon of graphene comprising the steps of: a. placing one or more polyaromatic hydrocarbon (PAH) precursors on a substrate; b. applying UV light to the PAH until one or more intermolecular bonds are formed between adjacent PAH molecules; and c. applying heat to the PAH molecules to increase the number of intermolecular bonds that are formed to create a ribbon of graphene.

Abstract: The invention provides a tow prepreg having improved productivity and performance. In various embodiments, the tow prepreg has 90% or more resin impregnation and a FAW greater than 600 g/m2. A method of making the prepreg by impregnating each continuous reinforcement fiber strand with a thermosetting resin is also disclosed. In various embodiments, the resin is applied to the reinforcement fiber while flattening the fiber between heated rollers positioned in parallel to each other.

Abstract: A yarn includes reinforcing fiber filaments and a resin that is infiltrated into the yarn and can be repeatedly melted and solidified by cooling to room temperature, wherein the filaments of the yarn are at least partially bound to one another by the resin, wherein the yarn contains 2.5 to 25 wt.% of infiltrated resin relative to its total weight, and wherein the infiltrated resin includes a mixture of at least two epoxy resins E1 and E2, E1 having an epoxy value in the range of 2,000 to 2,300 mmol/kg of resin and E2 having an epoxy value in the range of 500 to 650 mmol/kg of resin, and the weight ratio E1:E2 of the epoxy resins E1 and E2 in the mixture is chosen so that the infiltrated resin mixture has an epoxy value between 550 and 2,100 mmol/kg of resin. A preform comprising the yarn, a method for producing the preform and its use in producing a composite are also described.

Abstract: A novel polycrystalline stoichiometric fine SiC fiber substantially free of impurities is produced using a novel pre-ceramic polymer. The pre-ceramic polymer is prepared by reacting a mixture of chlorodisilane, boron trichloride, and a vinyl chlorodisilane with an excess of hexamethyldisilazane to form the pre-ceramic polymer resin, which may then be melt-spun, cured, pyrolyzed and heat-treated to obtain the finished SiC fiber. The manufacturing process for the production of the fine SiC ceramic fiber allows for flexibility with respect to cross-linking, in that low-cost thermal treatments may replace more complex methods, while obtaining fibers with improved materials properties as compared to currently available SiC fibers.

Abstract: In a known process for producing a quartz glass cylinder, a porous soot tube, which is sintered to form the quartz glass cylinder, is produced by depositing SiO2 particles on an outer cylindrical surface of a support, which rotates about the longitudinal axis thereof and has a layer of silicon carbide (SiC layer). In order on this basis to specify a support having a high resistance to fracture, which firstly can easily be removed and which secondly presents a low risk of contamination for the soot body, the invention proposes that the SiC layer is treated at a high temperature in an oxygen-containing atmosphere before the SiO2 particles are deposited, in such a manner that an SiO2 protective layer having a thickness of at least 0.1 ?m is produced by oxidation.

Abstract: A method of manufacturing a thin film, including: mixing carbon nanofibers into an elastomer including an unsaturated bond or a group having affinity to the carbon nanofibers, and dispersing the carbon nanofibers by applying a shear force to obtain a carbon fiber composite material; mixing the carbon fiber composite material and a solvent to obtain a coating liquid; and applying the coating liquid to a substrate to form a thin film.

Abstract: The present invention relates to a continuous, carbon fiber with nanoscale features comprising carbon and carbon nanotubes, wherein the nanotubes are substantially aligned along a longitudinal axis of the fiber. Also provided is a polyacrylonitrile (PAN) precursor including about 50% to about 99.9% by weight of a melt-spinnable PAN and about 0.01% to about 10% of carbon nanotubes. Other precursor materials such as polyphenylene sulfide, pitch and solution-spinnable PAN are also provided. The precursor can also include a fugitive polymer which is dissociable from the precursor polymer.

Abstract: Various embodiments of the present invention pertain to x-ray absorbing compositions that comprise a carbon material associated with an x-ray absorbing material. In some embodiments, the x-ray absorbing material is selected from the group consisting of lead-based compounds, bismuth-based compounds, and combinations thereof. In some embodiments, the carbon material is selected from the group consisting of carbon nanotubes, graphenes, carbon fibers, amorphous carbons, and combinations thereof. In further embodiments, the carbon materials of the present invention may also be treated with a surfactant, an acid, polymers or combinations thereof. In some embodiments, the carbon materials of the present invention may be further associated with a metal oxide. Additional embodiments of the present invention pertain to methods of making the aforementioned x-ray absorbing compositions. Such methods generally include associating a carbon material with an x-ray absorbing material.