127 results about "Single fibre" patented technology

The invention discloses a method and a system for constructing a fiber scale parameterized model of a single-sided weft-knitted fabric, relates to the field of dynamic simulation of weft-knitted fabrics, and solves the problems that an existing knitted fabric simulation system only displays an embroidery pattern in a yarn scale or a fabric scale and lacks a three-dimensional dynamic effect based on a fiber level and the like. The method comprises the steps that the weft-knitted fabric is formed by mutually intermeshing coils, and the number and coordinates of coil control points are set; the simulation of different knitting effects is realized by adjusting the positions of coil control points; based on the single fiber curve model, using a random jitter algorithm to carry out modeling on the fiber bundle, and constructing an untwisted fiber bundle model and a twisted fiber bundle model; a branch model is constructed to simulate the hairiness form of the weft-knitted fabric, and dynamic regulation and control of hairiness characteristics are achieved by adjusting the number of breakpoints, the branch length range and the disturbance amplitude core parameters. Environment parameters are set, an OpenGL illumination function is used for representing the stereoscopic impression of the weft-knitted fabric model, and after the weft-knitted fabric model is rendered, the model is output.

The invention discloses a short-process spinning device and an application method thereof, and relates to the technical field of spinning. The short-process spinning device comprises a loose fiber combing mechanism and a fiber cutting mechanism, the loose fiber combing mechanism is used for combing and dispersing the conveyed endless tows into a single fiber state for multiple times to obtain parallel and straight fibers; the fiber cutting mechanism is arranged on the rear side of the loose fiber combing mechanism and comprises a cutter roller and a conveying curtain, the cutter roller is located on the upper side of the conveying curtain and comprises a cylindrical roller and a spiral blade, and the spiral blade is spirally arranged on the surface of the cylindrical roller; and the spiral blade is used for obliquely cutting parallel and straight fiber groups continuously conveyed by the conveying curtain into short fibers. Continuous sliver forming is achieved through the technological innovation of fiber scattering, fiber combing, fiber cutting and sliver forming, slivers are uniform in thickness and have certain cohesive force, and the fibers are parallel and straight; short fibers can be directly twisted into yarns, and slivering is not needed.

A problem to be addressed by the present invention is to provide a carbon fiber bundle capable of efficiently transiting the tensile strength of the fiber to a carbon fiber-reinforced composite material formed using the carbon fiber bundle, the carbon fiber bundle including a sizing agent added thereto, wherein the tensile strength of resin-impregnated strands (tensile strength A' of resin-impregnated strands) of the carbon fiber bundle is 5.0 GPa or more and 6.0 GPa or less, as evaluated on the basis of JIS R7608 (2007) using Resin Formulation A below; wherein the tensile strength of resin-impregnated strands (tensile strength B' of resin-impregnated strands) of the carbon fiber bundle is 4.7 GPa or more and 5.5 GPa or less, as evaluated on the basis of JIS R7608 (2007) using Resin Formulation B below; wherein the ratio of the tensile strength B' of resin-impregnated strands to the tensile strength A' of resin-impregnated strands is 85% or more; and wherein the single-fiber diameter of the carbon fiber bundle is 6.0 µm or more; Resin Formulation A: "CELLOXIDE (registered trademark)" 2021P, boron trifluoride monoethyl amine, and acetone are used at a ratio of 100:3:4 (parts by mass), and the curing conditions of a normal pressure, a temperature of 125°C, and a time of 30 minutes are used; and Resin Formulation B: "JER (registered trademark)" 828, dicyandiamide, and 3-(3,4-dichlorophenyl)-1,1-dimethylurea are used at a ratio of 100:6.3:2 (parts by mass), and the curing conditions of a normal pressure, a temperature of 130°C, and a time of 90 minutes are used.

Fibrous cleaning material and roller compositions for floor cleaners are provided. The fibrous cleaning material can include a plurality of unit fiber sections. Each unit fiber section in the plurality of unit fiber sections can include a first fine fiber material having a fineness of less than about 1 denier, a second fine fiber material having a fineness of between about 1 and 10 denier, a first bristle material having a fineness of between about 10 and 50 denier, and a second bristle material having a fineness of greater than about 100 denier. A bristle lay of the unit fiber section and a small fiber lay of the unit fiber section can be skew relative to each other.

To provide an artificial leather that has high-quality appearance, and is thin, highly strong, and flexible so as to be easily molded along a shape.SOLUTION: An artificial leather includes, as a main component, fibers including a polyester-based resin as a primary component. The fibers are long fibers. The average single fiber diameter of the fibers is 2.0 μm or more and 7.0 μm or less. The fibers are crimped fibers having curvature of 5 to 20%. The fibers are dispersed as single fibers in the artificial leather.SELECTED DRAWING: Figure 1

The invention discloses a functional regenerated polyester-nylon composite superfine fiber and a preparation method thereof, and belongs to the technical field of composite fibers. The fiber is of a core-skin structure, a core layer is made of modified regenerated polyester containing superfine graphite, polyethylene glycol and an antibacterial additive, and a skin layer is made of modified regenerated chinlon containing a chain extender, a silane coupling agent and an antibacterial additive; the preparation method comprises the steps of regenerated raw material ultrasonic cleaning, melting chain extension, modified melt preparation, composite spinning and post-treatment splitting. The single fiber linear density of the fiber is 0.142-0.150 dtex, the breaking strength is larger than or equal to 6.5 cN / dtex, the thermal decomposition temperature is larger than or equal to 345 DEG C, the antibacterial rate is larger than or equal to 99.2%, the specific surface area is larger than or equal to 15200 cm < 2 > / g, and the fiber is excellent in comprehensive performance and can be used in the field of high-end electronic dust-free cloth. And the utilization rate of regenerated raw materials is not less than 90%.

Provided is a glass cloth having a single fiber diameter of less than 3.0 [mu] m, a thickness of 15 [mu] m or less, a mass of 10 g / m2 or less, and an excellent dielectric loss tangent. The glass cloth contains 50% by mass or more of SiO2 in the composition, the single fiber diameter of either warp or weft constituting the glass cloth is less than 3.0 [mu] m, the thickness of the glass cloth is 15 [mu] m or less, and the mass of the glass cloth is 10 g / m2 or less.

The present application provides a packing for gas-liquid contact, which has high gas-liquid contact efficiency and can be formed of light and low-cost material. The present application uses a composite yarn 44 composed of a single fiber and a wire, a combination of a single fiber yarn 42 composed of only a single fiber and a wire yarn 43 composed of only a wire, or a fabric or a knit formed of all or any combination of the single fiber yarn 42, the wire yarn 43, and the composite yarn 44, to constitute a strip-like material 71 having gaps between yarns 46 and yarns 46; and by alternately performing a mountain fold and a valley fold in a direction intersecting the length direction of the strip-like material 41, forming a bellows shape, and stacking a plurality of the bellows-shaped strip-like materials 41, a packing is formed.

The application discloses an automatic testing system for single-fiber interfacial shear strength, which comprises a single fiber with a resin drop, a clamp assembly for vertically fixing the single fiber and stretching the resin drop, and a testing system for detecting the single-fiber interfacial shear strength; the clamp assembly comprises a fixing frame for fixing two ends of the single fiber and movable along the direction of a single-fiber fixing shaft, and a pair of cutters located on both sides of the connection between the fiber and the resin drop; the testing system comprises a resin drop length acquisition module, a shearing force acquisition module, a motion control module and a calculation module. The application further provides an automatic testing method. The system provided by the application can effectively improve the detection accuracy and efficiency of the single-fiber interfacial shear strength.

The present invention pertains to a composite material comprising (a) at least one type of curable resin and (b) at least one type of aramid single fiber, wherein the average diameter of the aramid single fiber (b) as determined by a centrifugal sedimentation method is less than 2000 nm. According to the present invention, an article having excellent mechanical properties can be produced.

The invention relates to the technical field of polyvinyl alcohol fiber surface modification, and particularly provides a method for preparing hyperbranched polyamide surface modified polyvinyl alcohol fibers through a one-step method and application of the hyperbranched polyamide surface modified polyvinyl alcohol fibers in cement-based materials. The surface modification method comprises the following raw material components: 1 part of polyvinyl alcohol fiber, 1-3 parts of 3, 5-diaminobenzoic acid, 0.1-0.3 part of 4-dimethylaminopyridine and 100 parts of N, N-dimethylformamide. The modification method comprises the following steps: mixing the raw materials, and keeping the constant temperature of 50-80 DEG C to react for 2-5 hours to obtain the surface-modified polyvinyl alcohol fiber. The application comprises the following steps: verifying the change of the interfacial strength between the fiber and the cement-based material before and after modification through a single fiber pull-out sample, and obtaining the change of the mechanical property parameters of the fiber before and after modification through a single fiber tensile test. Compared with unmodified polyvinyl alcohol fibers, the tensile strength and the elongation at break of the surface-modified polyvinyl alcohol fibers disclosed by the invention are respectively improved by 1.1-1.6 times and 1.4-2.2 times; the surface-modified polyvinyl alcohol fiber can enhance the interfacial strength with cement, and the interfacial strength can reach 3.7-6.3 times that of unmodified polyvinyl alcohol fiber; the method can be widely applied to the field of fiber reinforced cement-based composite materials, and has a wide application prospect.

The present application relates to the field of large tow carbon fiber continuous production, and discloses an oiling method of large tow precursor.The method comprises the following steps: dividing the large tow precursor into alternate flat sections and folded and bent sections along the length direction, first oiling the large tow precursor, and controlling the oil content of each section to be the same;second oiling the flat sections of the large tow precursor, and controlling the oil content difference between the flat sections and the folded and bent sections of the large tow precursor to be within 0.1% when the large tow precursor is folded and packed and then unwound.After the large tow precursor is oiled by the oiling method provided by the present application, the large tow precursor is flat and folded and packed, and when the large tow precursor is unwound to an oxidation furnace, the oil content difference between the flat sections and the folded and bent sections of the large tow precursor unwound from the box is within 0.1%, the single fibers of the folded and bent sections of the large tow precursor do not adhere to each other, the large tow precursor is easy to separate, the amount of carbon fiber hair is reduced, the strength of the carbon fiber is improved, the carbon fiber is soft and supple, and does not become hard and brittle.

The invention relates to the technical field of composite non-woven fabrics, and particularly discloses a preparation device of a high-filling-power polyester composite non-woven fabric. The device is characterized by further comprising a working roller, the working roller is arranged in the working table, and the working roller decomposes non-woven fabric polyester fiber bundles into single fibers through high-speed rotation; a carding roller; after the working roller splits and flattens single fibers, the rotating carding roller continuously cards the single fibers, impurities and short fibers can be removed in the process, meanwhile, a worker can start the working motor to drive the movable wheel to rotate, the multiple adjusting plates and the carding roller move at the same time, the closer the carding roller is to the working roller, the more sufficient the carding is, and the carding efficiency is improved. The straightening degree, the separation degree, the parallelism degree and the singularization degree of fibers are remarkably improved, the carding rollers are far away from the working rollers, fiber damage is conveniently reduced, the device is suitable for short fibers and crude fibers so as to improve the carding effect, and it can be conveniently guaranteed that the multiple carding rollers can adjust the carding strength and improve the carding effect according to the non-woven fabric cotton material requirements.

This invention provides a novel false-twist multifilament yarn that has excellent yarn properties such as strength and elongation, and is sufficiently crimped by false-twist processing. When used in clothing or interior goods, it does not naturally disintegrate and can be used under normal conditions. Furthermore, when recycled after use, it can be melted at low temperatures into a resinous substance and molded into a shape that allows it to be pelletized again. [Solution] A false-twist multifilament yarn composed of single fibers formed from a copolymer polyester containing terephthalic acid as an acid component and ethylene glycol and 1,4-butanediol as glycol components, wherein the false-twist multifilament yarn has a breaking strength of 2.0 cN / dtex or more, an elongation at break of 45% or less, a crimping rate of 25-75%, and an elasticity recovery rate of 20-55%.

The application discloses a high-purity and difficult-graphitization viscose-based carbon fiber felt preparation method and equipment, the high-purity and viscose-based carbon fiber felt has impurity element content ratio less than 50ppm, single fiber strength greater than 120Mpa, and graphitization degree less than 85% after 2650 DEG C treatment; the application also provides a high-purity, high-strength and difficult-graphitization viscose-based carbon fiber felt preparation equipment which is composed of a felt inlet air seal section, a heat treatment section, a cooling section, a felt outlet air seal section and a cooling section. The metal impurities in viscose fibers are removed through pickling, the viscose fibers are needled into a felt, impregnated with a catalyst, dried, and then subjected to catalytic dehydration in a micro-negative pressure inert atmosphere, and finally carbonization and graphitization are carried out to obtain the high-purity and high-strength viscose-based carbon fiber felt with low ash content and less tar pollution. The raw materials used in the application are rich, the preparation process is simple, the equipment corrosion is effectively controlled, the high-purity and high-strength product is prepared, and the product production efficiency is greatly improved.

The invention relates to the technical field of functional textile materials, and discloses a sunscreen fabric with a high ultraviolet protection effect and a preparation method thereof.The fabric is prepared from matrix fibers, polyvinyl alcohol, nano inorganic particles, a silane coupling agent and a cross-linking agent; the preparation method comprises the steps of silanization activation pretreatment of matrix fibers, electrostatic spinning coating of a polyvinyl alcohol and nanoparticle composite spinning solution, high-temperature thermal induction chemical anchoring crosslinking and weaving. According to the preparation method, a compact discontinuous nano shielding network is constructed on the surface of a single fiber by utilizing an electrostatic spinning technology, and stable covalent bond combination of a functional layer and a matrix fiber is realized through an epoxy group ring-opening reaction of a silane coupling agent. According to the fabric, efficient ultraviolet protection is achieved, meanwhile, breathable micropores of the fabric are completely reserved, the problems that a traditional coating sunscreen fabric is poor in breathability, stiff in hand feeling and low in washing fastness are effectively solved, and intelligent heat and humidity adjustment can be achieved by introducing temperature-sensitive polyurethane filaments.

A basketball net includes multiple layers of thin strings. Each of the multiple layers of thin strings includes an outer layer formed of a first antibacterial, moisture-wicking fiber and an inner layer including a second antibacterial, moisture-wicking fiber. The outer layer is woven from a first antibacterial, moisture-wicking yarn to form a wall defining a central opening, and at least one thin string is positioned within the central opening. The at least one thin string is formed of a second antibacterial, moisture-wicking yarn. The at least one thin string includes a plurality of thin strings. The plurality of thin strings includes a first thin string formed of the second antibacterial, moisture-wicking yarn and a second thin string including a third antibacterial, moisture-wicking yarn. The plurality of thin strings includes: the first thin string; the second thin string including the third antibacterial, moisture-wicking yarn and at least one single-fiber yarn; and a third thin string formed of a plurality of single-fiber yarns.

A basketball net includes a multi-layer string including each of an outer layer formed of a first antibacterial, moisture-wicking fiber and an inner layer including a second antibacterial, moisture-wicking fiber. The outer layer is woven from a first antibacterial, moisture wicking yarn to form a wall defining a central opening, and at least one string is positioned within the central opening, the at least one string being formed from a second antibacterial, moisture wicking yarn. The at least one string includes a plurality of strings including a first string formed from the second antibacterial, moisture-wicking yarn and a second string including a third antibacterial, moisture-wicking yarn. The plurality of strings include: the first string; said second string comprising said third antimicrobial, moisture-wicking yarn and at least one monofilament yarn; and a third string formed of a plurality of single fiber yarns.

To provide a method for producing a liquid crystal polyester filament that maintains a high strength, high elastic modulus and high heat resistance, has no fibril defects and has an abrasion resistance without causing a problem in weaving property and weaving quality, and in particular, improves a yarn running property of a liquid crystal polyester monofilament having a small single fiber fineness, thereby improving an operating property.SOLUTION: There is provided a method for producing a liquid crystal polyester filament, which has different atmospheric temperatures at an inlet and an outlet of a heat treatment step, when a package of the liquid crystal polyester filament is solid-phase polymerized, and then the solid-phase polymerized liquid crystal polyester filament is unwound from the package and heat-treated without being wound up.SELECTED DRAWING: None

The present invention provides amorphous epoxy fibers with excellent dimensional stability, a fiber structure at least partially comprising such fibers, and a molded article obtained by melting such fibers. The amorphous epoxy fibers have a birefringence value of 0.005 or less. For example, the amorphous epoxy fibers may comprise an amorphous epoxy resin represented by the following general formula. Furthermore, the average fiber diameter of a single fiber of the amorphous epoxy fibers may be 40 μm or less. (Wherein, X is a dihydric phenol residue and n is 20 or greater)#imgabs0#

The split type composite fiber contains a polymer A and a polymer B. On the cross section of the fiber, the polymer A is continuously distributed, the polymer B is divided into large split blocks and small split blocks, and all the split blocks are exposed out of the surface of the fiber; the cross section of the single fiber is provided with 1-3 maximum segmentation blocks with the same area and more than two small segmentation blocks with the area smaller than that of the maximum segmentation blocks; the area of the single maximum segmentation block accounts for 7.5-70.0% of the cross sectional area of the fiber, and the area of the single maximum segmentation block is more than two times of the area of the single small segmentation block. The initial splitting rate of the split type composite fiber is low, chemical agents are not used, the split type composite fiber can be effectively split after physical treatment such as hot water, and the split type composite fiber is fluffy and soft.

The application relates to the technical field of non-woven material preparation, in particular to a preparation process of a high-liquid-absorption spunlace non-woven mask base cloth material, which comprises the following steps: S1. selecting high-liquid-absorption viscose fibers as main raw materials and mixing functional fibers; S2. mixing the high-liquid-absorption viscose fibers and the functional fibers in proportion, carding the mixed fibers into single fiber state through a carding process, and cross-laying to form a fiber web; S3. forming a unique fiber distribution structure through a multi-stage spunlace process, and applying ultrasonic vibration in the spunlace process; and S4. performing hydrophilic treatment on the base cloth after spunlace. By adding hydrophilic nanoparticles in viscose spinning liquid and adopting a dry-wet spinning process, high-liquid-absorption viscose fibers with a multi-leaf structure are prepared, the specific surface area is increased, the liquid absorption capacity of the mask base cloth is further improved, the mask base cloth can fully absorb and carry essence liquid, and the demand of consumers for the skin care effect of the mask is met.

A filter substrate and adhesive filter rod manufacturing process having a plurality of connected adhesive regions or adhesive mechanisms throughout the filter substrate or other biodegradable material (single or multi-fiber), which can improve substrate performance regardless of whether the paper / substrate is curled, embossed, or not, and can be used as a filter rod. Including mechanical strength, filtration capacity for vapor / gas and particulate / solid phases, tar, nicotine and in particular carbon monoxide, sensory neutrality, visual improvement before and after use, and processability of the substrate.

The invention relates to a medical device, in particular a stent or flow diverter, comprising a mesh structure, in particular a self-expandable mesh structure, wherein the mesh structure comprises at least one mesh structure element (10) which is encased, in particular in its entirety, by a nanostructured coating formed from fibrin nanofibres (11, 12), wherein the nanostructured coating has a first layer (L1) which forms a matrix, in particular a felt-like or fleece-like matrix, of interconnected fibrin fibres (11), wherein some fibrin fibres (12) protrude freely beyond the first layer (L1) and form a second layer (L2) comprising a single-fibre structure, in particular a pile-like single-fibre structure, and wherein the nanostructured coating additionally contains a polynucleic acid-based or peptide-base KLF5 inhibitor that is integrated into the first layer (L1) and / or the second layer (L2).

To provide a carbon fiber bundle and a method for manufacturing a carbon fiber bundle that can exhibit high strength without reducing the elastic modulus, even when the diameter of the single fiber is increased. [Solution] A carbon fiber bundle in which multiple carbon fiber single fibers are bundled together, wherein the diameter of the single fibers is 6.5 μm or more and 8.5 μm or less, the strand strength is 4.5 GPa or more, and the strand modulus is 310 GPa or more, or a carbon fiber bundle in which multiple carbon fiber single fibers are bundled together, wherein the diameter of the single fibers is 6.5 μm or more and 8.5 μm or less, the strand strength is 4.5 GPa or more, and the product of the diameter of the single fiber and the strand strength is 31 or more.

The utility model relates to the field of continuous production of large-tow carbon fibers, and discloses an oiling device for large-tow precursors. The device comprises a first oiling groove and a second oiling groove, the first oiling groove is filled with an oiling agent, so that the large-tow precursor is immersed in the oiling agent of the first oiling groove for first oiling, the second oiling groove is provided with a spray head, and the large-tow precursor subjected to first oiling is sprayed out of the oiling agent at intervals through the spray head for second oiling. After the oiling device provided by the utility model is used for oiling the large-tow protofilament, the large-tow protofilament is laid, folded and boxed, and when the large-tow protofilament is unwound and led to an oxidation furnace, the oil content difference between the flat section protofilament and the folded and bent section protofilament unwound from the box is within 0.1%, the folded and bent section protofilament does not generate single fiber adhesion and is easy to separate, and the large-tow protofilament is not easy to deform. The broken filament amount of the carbon fibers is reduced, the strength of the carbon fibers is improved, and the carbon fibers are soft in hand feeling and not hard or brittle.

The present invention provides a carbon fiber, which has excellent tensile strength by having fewer internal defects while being a thick fiber having a single-fiber diameter of 6.0 μm or greater, and can provide the effects of reducing costs while increasing production amount to enhance the yieldability of the carbon fiber.

The present application provides a kind of composite textile filament for fiber reinforced thermoplastic plastic when manufacturing FRP, the formed body that can obtain sufficient inhibition of the orientation disorder of continuous reinforcing fiber, further, the thermoplastic resin that melts is easily penetrated in the single fiber between the continuous reinforcing fiber constituting the core when manufacturing formed body, good formability, the strength of the obtained formed body is high.A kind of composite textile filament for fiber reinforced thermoplastic plastic, characterized in that, on the substantially untwisted fiber bundle formed by at least containing the core (A) of continuous reinforcing fiber (a1) and the sheath (B) formed by thermoplastic short fiber, textile filament (C) is wound by thermoplastic short fiber.

The present disclosure provides a kind of nanofiber thermal conductivity measuring device, the measuring device includes: middle hollow base, first and second side wall are formed around the hollow place and oppositely arranged third and fourth side wall;Two conductive electrodes are formed on the first and second side wall respectively;And support layer, adhesive layer and suspension electrode are sequentially stacked from bottom to top, the suspension electrode is supported on the first and second side wall by support layer, current is applied to the suspension electrode by two conductive electrodes to make it as hot end, the thermal resistance of suspension electrode is greater than the thermal resistance of the nanofiber to be measured, and the two ends of nanofiber are supported on the suspension electrode and the fourth side wall respectively.The suspension electrode in the present disclosure has the characteristics of long electrode length and small current flow area, so it has much greater thermal resistance than conventional single fiber measuring device, and can solve the problem of low signal-to-noise ratio in low thermal conductivity nanofiber thermal conductivity measurement.

A non-invasive, wearable, ambulatory device capable of cardiac defibrillation includes a smart garment to be worn by a patient. The device also includes a plurality of therapeutic electrodes configured to be removably attached to the garment. A plurality of polymer-based ECG sensing electrodes are configured to provide ECG signals based on skin electrical activity of the patient wearing the smart garment. Polymer-based ECG sensing electrodes are formed by applying a conductive polymer fluid to each of a plurality of base fibers to form a plurality of individually conductive polymer coated fibers. The base fibers are single fibers and / or multi-fibers. The plurality of individually conductive polymer coated fibers are assembled into the one or more plurality of polymer-based ECG sensing electrodes. A controller is configured to receive the ECG signals, determine at least one arrhythmia episode based on the received ECG signals, and to cause a defibrillation shock.