摘要:
[Problems] To provide a vapor-grown carbon fiber aggregate, wherein the carbon fiber has a structure of two or more tubular graphene layers and of which the central portion in cross section of the fiber is hollow, has a little unevenness in the structure and exhibits excellent electric conductivity.[Means for Solution] A vapor-grown carbon fiber aggregate, wherein the carbon fiber has a structure of two or more tubular graphene layers and of which the central portion in cross section of the fiber is hollow, the average outer fiber diameter of the carbon fibers is from 10 to 300 nm, and not less than 70% of the whole number of the carbon fibers have hollow diameters of from 2 to 20 nm and hollow diameter/outer fiber diameter ratios of from 1.4 to 20%.
摘要:
A dragline excavator system has a support assembly, a hoist coupler assembly suspended from the support assembly, a bucket assembly suspended from the hoist coupler assembly, a sheave assembly supported by the hoist coupler assembly, a drag coupler assembly, and at least one dump rope operatively connected to the drag coupler assembly and the bucket assembly. The at least one dump rope extends through the sheave assembly. The at least one dump rope is formed of at least one fiber made from at least one of high modulus polyethylene (HMPE), poly-p-phenylenebenzobisoxazole (PBO), liquid crystal polymer (LCP), aromatic polyamide (Aramid), polyester, nylon, polyolefin, polypropylene (PP), carbon, and glass.
摘要:
A process for preparing a PANOX fiber comprising: obtaining an acrylonitrile copolymer, wherein the copolymer contains at least about 2% by weight itaconic acid comonomer; forming a spin dope from the copolymer; wet spinning the spin dope to obtain gelled filaments; contacting the gelled filaments with ammonia activator in an aqueous imbibation bath; bundling the gelled filaments to obtain a fiber; removing solvent from the fiber; drawing the fiber; densifying the fiber by heating the fiber up to about 400 degrees C. for a time of about 15 minutes in a rapid densification zone; and withdrawing a PANOX fiber from the densification zone.
摘要:
The present invention relates to a collagen fiber construct composed of single collagen fibers, which is sterilized with alcohol and via irradiation and not populated with cells, wherein the single collagen fibers are isolated from collagen-containing tissue from mammals. The present invention also relates to a method for manufacturing a collagen fiber construct composed of single collagen fibers, which is sterilized with alcohol and via irradiation and is not populated with cells, wherein the single collagen fibers are isolated from collagen-containing tissue from rat tails. Finally, there is also described the use of the collagen fiber constructs as xenoimplants.
摘要:
Helically stranded thermoplastic polymer composite cable (10) includes a single wire (2) defining a center longitudinal axis, a first multiplicity of thermoplastic polymer composite wire (4) helically stranded around the single wire (2), and a second multiplicity of polymer composite wire (6) helically stranded around the first multiplicity of thermoplastic polymer composite wire (4). The helically stranded thermoplastic polymer composite cable (10) may be used as intermediate articles that are later incorporated into final articles, such as electrical power transmission cables, including underwater tethers and underwater umbilicals. Methods of making and using the helically stranded thermoplastic polymer composite cables are also described.
摘要:
A nanofiber yarn assembly including a longitudinally extending core for the yarn assembly and, twisted about the core, at least one ribbon of multiple nanofibers. The yarn assembly can be formed by drawing a longitudinally extending core for the yarn assembly through a concentric core-spinning zone, and, as the core travels through the core-spinning zone, twisting at least one ribbon of multiple nanofibers about the travelling core. Apparatus is also disclosed.
摘要:
The present invention introduces a process of spinning bast fibers through health preserving. Various examples include health preserving bast fibers; opening and cleaning, and carding the health preserved bast fibers, and drawing the carded health preserved bast fibers into bast fiber strips; health preserving said bast fiber strips; and spinning the health preserved fiber strips into yarn. Examples of the present invention also introduce a kind of yarn made by such processes. Examples of the present invention further introduce a process of blended spinning bast fiber with other fibers through health preserving, and the yarn made by such processes. Examples of the present invention realize low end breakage rates, and high efficiency, so as to achieve high quality products.
摘要:
Disclosed are a polyester fiber having excellent antibacterial performance, deodorizing performance, and stain resistance together with sufficient durability; a method for producing the same; a cloth; a textile product; and a polyester formed article. The polyester fiber, cloth, or polyester formed article has a pH of less than 7.0 achieved by subjecting a polyester fiber, a cloth, or a polyester formed article containing a polyester copolymerized with an ester-forming metal sulfonate compound and/or an ester-forming phosphonium sulfonate compound to an acid treatment, or alternatively by applying a processing liquid having a pH of less than 7.0 to a polyester fiber, a cloth, or a polyester formed article.
摘要:
A high-strength cable having a twisted layer of non-metallic reinforcing elements in outer coatings is disclosed. The reinforcing elements include coating elements, fiber elements of copolyparaphenylene-3,4′-oxydiphenyleneterephthalic amide disposed in the coating elements, and filling materials filled between the fiber elements, respectively. The lateral compression stress of the fiber elements of the copolyparaphenylene-3,4′-oxydiphenyleneterephthalic amide is 75 cN/dtex or more.
摘要:
Composite reinforcement (R-2) capable of adhering directly to a diene rubber matrix, which can be used as reinforcing element for a tire, comprising: one or more reinforcing thread(s) (20), for example a carbon steel cord; a first layer (21) of a thermoplastic polymer, the glass transition temperature of which is positive, for example 6,6 polyamide, covering said thread or said threads; a second layer (22) of a composition comprising an unsaturated thermoplastic stirene (“TPS”) elastomer, the glass transition temperature of which is negative, for example an SB (stirene/butadiene) or SBS (stirene/butadiene/stirene) block copolymer, as well as a poly(p-phenylene ether) (“PPE”), covering the first layer (21). Process for manufacturing such a composite reinforcement and rubber article or semi-finished product, especially a tire, incorporating such a composite reinforcement.