摘要:
A fiber bundle is provided that strikes an excellent balance among the properties and performance of the web and articles manufactured using this web, the productivity, processability, and cost. The fiber bundle comprising continuous fibers aligned in one direction is characterized in that the continuous fibers have crimps that form peaks and valleys in the width direction of the fiber bundle, and these crimps have a characteristic value A, defined as the absolute value of a slope with respect to the length direction of the fiber bundle of a straight line that connects the vertex of the peak with the vertex of the valley of adjacent crimps present in a single continuous fiber, of at least 0.3.
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 melt-spinning process and a melt-spinning apparatus produce a crimped yarn. By means of a spinning device, a filament bundle is generated from a thermoplastic polymer, is drawn after cooling and is compressed into a yarn plug in a stuffing chamber. The yarn plug is opened up into a crimped yarn and wound into a bobbin. In order to obtain as high a crimp resistance of the yarn as possible, amorphous fractions in the molecular structure of the yarn material are avoided after drawing. This is achieved by means of relaxation treatment after drawing and before compression, a minimum yarn pull force of >0.05 cN/dtex with a relaxation temperature in the range of 120° C. to 245° C. being maintained.
摘要:
A composite article may include a matrix and a plurality of fibers embedded in the matrix. Each one of the fibers has a fiber length and a fiber geometry. The fiber geometry of at least a portion of the fibers may vary along the fiber length.
摘要:
This woven/knit fabric contains composite yarn comprising a multifilament yarn A2 and a multifilament yarn B2, which satisfies the following conditions (1) to (3): (1) the ratio (WA2/DA2) of the yarn length of the multifilament fiber A2 during absorption of moisture and humidity (WA2) to the yarn length of the multifilament yarn A2 under conditions of 20° C. and 65% humidity (DA2) is 1.02 to 1.30; (2) the ratio (WA2/DB2) of the yarn length of the multifilament yarn A2 during absorption of moisture and humidity (WA2) to the yarn length of the multifilament yarn B2 under conditions of 20° C. and 65% humidity (DB2) is 0.9 to 1.1; and (3) the drying shrinkage stress (DS value) of the multifilament yarn A2 is 0.08 cN/dtex or more.
摘要:
A steel cord (10) adapted for the reinforcement of rubber products, the steel cord comprises a core (12) and a layer of filaments (14) with round cross-sections twisted around the core (12). The core (12) comprises a flat wire at a waveform, which lies in the plane of the flat wire. The wire is obtainable by first crimping a round wire and thereafter flattening the crimped wire. The filaments of the layer do not substantially contact each other to make spaces between each other to insure adequate rubber penetration into the cords. The steel cord has improvements on elongation at break.
摘要:
A method of manufacturing a guidewire having a discrete length. The method includes the steps of feeding a first end of a corewire into an extrusion device, gripping the first end of the corewire with a gripping apparatus, and extruding a first extrusion material onto an outer surface of the corewire while the gripping apparatus pulls the corewire through the extrusion device to form an extrusion jacket on the outer surface of the corewire. The corewire has a predetermined length corresponding to a length of the guidewire.
摘要:
A nanoscale heterostructure tellurium-based nanowire structure, including a rod-like tellurium nanowire structure and a metal telluride agglomeration connected to the rod-like nanowire structure. The metal telluride agglomeration may have an octahedral shape or a platelet shape. The agglomeration structures are selected from the group comprising lead telluride, cadmium telluride, bismuth telluride, and combinations thereof.
摘要:
The invention pertains to a method for making a polymer-additive composite particle from a dope by jet spinning the dope to obtain a pulp, fibril or fibrid, wherein the solvent of the dope is selected from N-methyl-2-pyrrolidone, N,N′-dimethylformamide, N,N′-dimethylacetamide, tetramethylurea, and 4 to 75 wt % of a composition consisting of 2 to 95 wt % of a para-aramid polymer and 5-98 wt % of a solid additive material, to a total of 100 wt %, and wherein the aramid polymer is dissolved in the solvent; or coagulating the dope by means of a rotor-stator apparatus in which the polymer solution is applied through the stator on the rotor so that the precipitating polymer-additive composite particle is subjected to shear forces while they are in a plastic deformable stage.
摘要:
The present invention relates to thermoset resin fiber components, composite materials including thermoset resin fiber components, composite articles manufactured using such composite materials and methodologies for manufacturing same. The thermoset resin fiber components may include a single fiber of thermoset resin or a plurality of fibers commingled together. The properties and characteristics of the thermoset resin used are chosen according to the material to be produced therefrom. The thermoset fiber components may be woven into reinforcement fibers to form prepregs. Thermoplastic fibers may be commingled and co-woven with the thermoset fiber components.