39 results about "Acrylic fiber" patented technology

The present application relates to the technical field of ultra-fine denier fiber spinning, and particularly relates to an ultra-fine denier acrylic high-count pure spinning yarn and a preparation method thereof, comprising (1) a picking process; (2) a doubling process; (3) a roving process; (4) a spinning process; and (5) a winding process; wherein the picking process is sequentially performed in a disc grabber, a multi-warehouse cotton mixer, an opening and cleaning machine, a cotton box and a carding machine, and a spraying device is additionally installed at the rear of the beater of the disc grabber; and the opening and cleaning machine adopts a carding needle type beater. The present application improves the picking process in the preparation method of the ultra-fine denier acrylic high-count pure spinning yarn, reduces the static electricity accumulation of the ultra-fine denier acrylic high-count pure spinning yarn in the spinning process, avoids the fiber damage of the ultra-fine denier acrylic fiber caused by single strength, and improves the spinnability of the ultra-fine denier acrylic fiber.

The application discloses a multi-stage stretching and heat setting acrylic filament preparation equipment and process, which comprises a multi-stage stretching structure, the multi-stage stretching structure is connected with a waste liquid treatment structure and is used for treating and recycling the waste liquid, a heat setting structure is installed on the upper side of the multi-stage stretching structure and is used for heat setting treatment of the acrylic filament, a heat energy recovery treatment assembly is connected with the heat setting structure and the waste liquid treatment structure and is used for recycling and reprocessing high-temperature heat energy, the multi-stage stretching structure comprises a bottom box, a first pretreatment assembly, a wet heat stretching assembly, a heat roller stretching assembly and an air cooling assembly are installed on the upper side of the bottom box, the wet heat stretching assembly is arranged on the right side of the first pretreatment assembly, the heat roller stretching assembly is arranged on the right side of the wet heat stretching assembly, and the air cooling assembly is arranged on the right side of the heat roller stretching assembly, the multi-stage stretching and heat setting acrylic filament preparation equipment and process are treated through multi-stage filtration, so that the waste water treatment effect is ensured, the treated waste water is stored in a liquid storage tank and is recycled finally.

The present invention relates to acrylic fiber for artificial hair, the acrylic fiber being configured from an acrylic copolymer, while having a torsional rigidity of 0.3 to 2.0 mg∙cm2 and a dry heat shrinkage of 30% to 70% if subjected to a dry heat treatment at 90°C to 180°C for 30 minutes. In addition, one or more embodiments of the present invention relate to acrylic crimped fiber for artificial hair, the acrylic crimped fiber being configured from an acrylic copolymer, while having a number of crimps of 10 or more per 10 cm and a crimp height of 1.5 mm or more, wherein at least two crimps among 10 consecutive crimps are different from each other in the crimp width, crimp height and crimp direction.

A protective textile used for manufacturing personal protective equipment includes at least three yarns. A first composite yarn includes a tungsten core, a sheath made of a polyester filaments covering the tungsten core, and an outer layer comprising a plurality of para-aramid filaments wrapped around the sheath. A second composite yarn has a spandex core with polyester wound around it. A third yarn is made of fire-resistant spun acrylic. All three yarns are combined into a single feed to manufacture the protective textile, which can be formed into a glove or a sleeve. A fourth yarn made of a rubber core wrapped in a double covering of polyester may be used in the cuffs of the glove / sleeve for additional elasticity. A fifth yarn having a spandex core covered with fire-resistant spun acrylic fiber may be used in the palm of the sleeve for additional coverage and elasticity.

The utility model discloses a steam condensate water supplement pipeline for evaporative condensate tank, including condensate pipe, first gate valve, second gate valve, check valve, one end of condensate pipe is communicated with the export end of steam condensing pump, and the other end is communicated with the desalted water input pipeline of evaporative condensate tank, first gate valve, second gate valve, check valve are set gradually on condensate pipe. The utility model discloses a pipeline is added to the evaporative condensate tank at the steam condensing pump export, because the quality of the steam condensate water of acrylic fibre recovery device is better, and the nature is similar with desalted water, when finding that evaporative condensate tank liquid level is too low, replaces desalted water with steam condensate water, and is supplemented to evaporative condensate tank, can save the desalted water amount greatly, and the production cost is reduced.

The utility model discloses an acrylic fiber pure textile fabric pretreatment device for an aircraft cabin, and relates to the technical field of textile fabric pretreatment. The device comprises a first mounting frame, a second mounting frame and a third mounting frame, a brushing mechanism is rotatably arranged on the first mounting frame and the second mounting frame, driving mechanisms are arranged on the first mounting frame and the second mounting frame, acrylic fabric penetrates through the brushing mechanism, a singeing mechanism is arranged on the third mounting frame, and a singeing mechanism is arranged on the third mounting frame. Cleaning mechanisms are arranged on the first mounting frame and the second mounting frame, and the brushing mechanisms are in transmission connection with the cleaning mechanisms. When the supporting shaft rotates, the first gear fixed to the supporting shaft drives the second gear meshed with the first gear to rotate, then the fixing rod and the first cleaning needle are driven to rotate, impurities wound on the rolling brush are stripped, the phenomenon that the brushing effect is affected by yarn ends is prevented, non-stop cleaning is achieved, and the practicability and flexibility of the device are improved.

The invention relates to an acrylic fiber that is flame- and fire-resistant, can be processed into textiles, has improved comfort properties, does not release toxic gases during combustion, possesses moisture absorption capability, and exhibits antibacterial properties; and to a method in which process steps are optimized to enable homogeneous amidoximation reactions in the products and reduce the number of processing steps.

This invention provides a method for producing modacrylic fibers that allows for the recycling of modacrylic fiber products by dissolving modacrylic fiber products in an organic solvent to prepare a low-viscosity spinning stock solution, and then stably performing wet spinning using the obtained spinning stock solution. [Solution] A method for producing modacrylic fiber, comprising the steps of: dissolving a modacrylic fiber product in a solvent containing an organic solvent to obtain a spinning stock; and wet spinning the spinning stock, wherein the solvent further contains a surfactant, the surfactant is at least one selected from the group consisting of cationic surfactants and amphoteric surfactants, and the content of the surfactant is 0.1 parts by mass or more and 1.5 parts by mass or less per 100 parts by mass of the modacrylic fiber product.

This invention belongs to the field of polymer fiber materials technology and discloses a fatigue-resistant and highly elastic nylon-acrylic blended core-spun yarn and its preparation method. The core yarn comprises nylon resin, acrylic resin, a synergistically modified topological network elastomer, 1,3,5-tris(hydroxymethyl)benzene, zirconium chloride, and deionized water; wherein the synergistically modified topological network elastomer is a three-dimensional dynamic topological network structure synergistically constructed from dopamine, octa(3-aminopropyl)silsesquioxane, and 2,5-dihydroxyterephthalaldehyde. The preparation method includes mixing, melt blending spinning, and coating spinning steps. By constructing a network structure with multiple dynamic crosslinking and topological confinement synergistic effects, and introducing small organic molecules with multi-hydroxyl structures, energy dissipation and reversible structural reconstruction under cyclic loading are achieved, thereby significantly improving the fatigue resistance, elastic recovery performance, and structural stability of the core-spun yarn. This material is suitable for high-durability textiles and functional fibers.

This application relates to the field of functional fabrics, specifically disclosing a moisture-wicking and breathable fabric and its preparation method. The moisture-wicking and breathable fabric comprises a face layer and an inner layer bonded together. The face layer is woven from a first blended yarn, which is a blend of fibers with the following weight percentages: 52-56% acrylic fiber, 18-22% viscose fiber, 10-14% cupro fiber, and 12-16% spandex fiber. The inner layer is woven from a second blended yarn, which is a blend of fibers with the following weight percentages: 58.5-62.5% acrylic fiber, 10-15% viscose fiber, 11.5-15.5% spandex fiber, 8-12% cupro fiber, and 3-4% wool. The preparation method involves bonding the face layer and the inner layer together. The fabric obtained in this application has good moisture-wicking, breathability, and warmth retention; it remains smooth and does not easily deform after long-term use, making it suitable for close-fitting clothing.

An acrylic fiber membrane was produced using an electrospinning process. This membrane was doped with different sulphonated petcoke (SPC) loads, and the optimal electrospinning conditions (injection flow rate, voltage, injected volume, and electrode spacing) were identified. The membranes were characterized, and their performance in removing cations such as sodium from aqueous matrices was evaluated.

Ultraviolet blocking modacrylic fibers contain an anionic surfactant in an amount of 0.03 wt % or more. The ultraviolet protection factor (UPF) rating value of the ultraviolet blocking modacrylic fibers measured according to JIS L 1925: 2019 is UPF15 or more. Thus, ultraviolet blocking modacrylic fibers that are less likely to be discolored and have excellent ultraviolet blocking properties, an ultraviolet blocking fabric and a fiber product containing the ultraviolet blocking modacrylic fibers, and a method for manufacturing the ultraviolet blocking modacrylic fibers are provided.

The present application relates to the technical field of friction material preparation, and particularly relates to a preparation method of acrylic pulp and aramid hybrid reinforced friction material, which comprises the following preparation steps: mixing weighed reinforcing fibers, friction performance regulators, binders and powder fillers to obtain a friction material mixture; the binders comprise nitrile rubber powder and phenolic resin powder, and the reinforcing fibers comprise acrylic pulp, aramid pulp, carbon ceramic fibers and mineral fibers; the friction material mixture is loaded into a mold and hot-pressed to form a friction material blank; the friction material blank is placed in an oven and gradient heat-treated to obtain the friction material. The organic fiber hybrid network formed by the acrylic pulp and the aramid pulp, in combination with the rigid support of the carbon ceramic fibers and the mineral fibers and the close packing of the gradient graded powder fillers, significantly reduces the wear rate and prolongs the service life.

This invention provides an antistatic fabric based on modified acrylic fiber and its preparation process, belonging to the field of textile fabric technology. The process includes the following steps: first, preparing modified acrylic fiber and organosilicon quaternary ammonium salt modified CNW; then, mixing and stirring the modified acrylic fiber, DMF, and organosilicon quaternary ammonium salt modified CNW to obtain a spinning solution; mixing anhydrous ethanol and organosilicon quaternary ammonium salt modified CNW, and ultrasonically treating to obtain a dispersion; in a conjugate electrospinning device, feeding the spinning solution and dispersion into two sets of needles respectively, and electrospinning the spinning solution to form nanofibers under the action of a high-voltage electric field; feeding cotton yarn into the electric field region, causing the nanofibers to spirally wind around the surface of the cotton yarn and form a coating shell; and electrostatically spraying the dispersion to deposit the organosilicon quaternary ammonium salt modified CNW onto the surface of the coating shell; collecting and winding to obtain a fiber core-spun yarn, and weaving the fiber core-spun yarn to obtain the antistatic fabric. This invention can improve the antistatic performance of the fabric while also possessing certain antibacterial properties.

The utility model relates to the technical field of yarn dyeing, and concretely relates to a dyeing vat for acrylic yarn dyeing, which comprises a dyeing vat, a yarn cage arranged in the dyeing vat, a first semicircular base and a second semicircular base of the yarn cage, a hollow structure in the first semicircular base and the second semicircular base, a bobbin tube for supporting a bobbin at equal distances and connected to the top of the first semicircular base and the second semicircular base, a communication between the bobbin tube and the corresponding first semicircular base and second semicircular base, and a liquid injection port for liquid discharge arranged on the outer periphery of the bobbin tube. The yarn dyeing mechanism composed of the yarn cage and the dyeing vat provides a dyeing vat assembly with convenient feeding and discharging for the dyeing processing of acrylic yarn. Based on the yarn cage that can be opened in half, the yarn cage can be opened at the middle part that is not easy to contact and operate in the whole round state, which facilitates workers to better set a bobbin on the bobbin tube in the middle part of the yarn cage, reduces the difficulty of bobbin setting, and improves the efficiency of bobbin setting.

A protective textile used for manufacturing personal protective equipment includes at least three yarns. A first composite yarn includes a tungsten core, a sheath made of a polyester filaments covering the tungsten core, and an outer layer comprising a plurality of para-aramid filaments wrapped around the sheath. A second composite yarn has a spandex core with polyester wound around it. A third yarn is made of fire-resistant spun acrylic. All three yarns are combined into a single feed to manufacture the protective textile, which can be formed into a glove or a sleeve. A fourth yarn made of a rubber core wrapped in a double covering of polyester may be used in the cuffs of the glove / sleeve for additional elasticity. A fifth yarn having a spandex core covered with fire-resistant spun acrylic fiber may be used in the palm of the sleeve for additional coverage and elasticity.

The present invention relates to a novel dyeing method involving surface modification that enables the dyeing of acrylic fibers with anionic and cationic paints.

The present invention provides a fabric that can sustain a cooling effect for an extended period of time through evaporative cooling, and a fabric product using the same. [Solution] The fabric 1 of this invention comprises a surface layer 2, a back layer 3, and an intermediate layer 4 disposed between them. In the fabric, both the surface layer and the back layer are composed of surface yarns 21 or back layer yarns 31 made of fiber yarns that constitute the outer layer by coating the outer circumference of a water-absorbing fiber yarn, which has a polyester fiber yarn or acrylic fiber yarn as a core material, with a fiber yarn made of a mixture of polyester and silicon dioxide aerogel as a water-non-water-absorbing fiber. The intermediate layer is composed of middle layer yarns 41 that include hydrophilic fiber yarns. The surface layer, intermediate layer, and back layer are formed to be held together integrally using connecting yarns 51 made of water-absorbing fiber yarns.

The invention relates to a method comprising the modifications carried out in the coagulation and washing processes, which are process steps for obtaining acrylic fibers with improved wear values and mechanical strength properties, and to the acrylic fiber products obtained by this method.

This application discloses a method for preparing sodium propylene sulfonate using a composite catalyst, belonging to the technical field of sodium propylene sulfonate preparation. The method includes the following steps: uniformly mixing sodium sulfite with recycled water to obtain a sodium sulfite solution; adding a composite catalyst to 3-chloropropylene, followed by dropwise addition of the sodium sulfite solution, heating to 45-55°C to initiate the reaction, then controlling the temperature at 45-50°C for 0.5-1.5 hours, allowing the mixture to settle, and condensing and recovering the tail gas during the reaction; subjecting the reaction solution obtained from the reaction step to coarse dehydration and refined dehydration sequentially to obtain dehydrated material, and condensing and recovering the water vapor generated during the two dehydration processes; centrifuging the dehydrated material to obtain sodium chloride solid and centrifugal mother liquor; and post-processing the centrifugal mother liquor to obtain sodium propylene sulfonate. This method achieves efficient, low-consumption, and clean production of sodium propylene sulfonate, improving its yield and purity, and meeting the synthesis requirements of acrylic fibers.

The present application belongs to the technical field of high-performance acrylic fiber preparation, and provides a passive cooling fiber and a preparation method thereof. The present application prepares a dyeing functional additive, integrates a color-producing group, a functional group for realizing infrared radiation cooling and a chain segment for forming a fiber skeleton on a molecular chain. Specifically, first, a dye molecule containing a specific functional group is chemically modified to become a polymerizable monomer. Then, through controllable polymerization and efficient grafting reaction, the dye monomer, a flexible polymer chain segment with high infrared emissivity and a polymer chain segment capable of forming a stable matrix are combined into one. In the fiber preparation stage, the additive is blended with conventional fiber-forming polymers to prepare a spinning dope, and the passive cooling fiber is prepared through a wet spinning process. The color of the prepared fiber is derived from covalent bonding, so it has excellent washing and light fastness, and at the same time, has efficient passive cooling performance.

This invention proposes a temperature-controlled textile fabric and its preparation method. The fabric material includes acrylic temperature-controlled yarn and nylon-spandex yarn. The acrylic temperature-controlled yarn contains 5%-10% by mass of a thermosensitive phase change material. The thermosensitive phase change material includes a NIPAAm-polyethylene glycol diacrylate-sodium alginate ternary copolymer phase change material. In this invention, the oxygen-containing groups in the polyethylene glycol diacrylate of the phase change material crosslink with the hydroxyl groups in NIPAAm and the amino groups in sodium alginate to form a three-dimensional network structure of hydrogel spheres. Simultaneously, the functional groups on the surface of the phase change material have a strong binding force with the acrylic fibers, increasing the fabric's temperature control and washability.

The application discloses a kind of preparation methods of dry process acrylic staple fiber nonwoven fabric, comprising the following steps: S1 polymer including polyacrylonitrile is prepared into spinning solution with solvent, and primary fiber is spun using dry process with nitrogen as exchange medium;S2 primary fiber is washed, drawn, curled, oiled, cut, and dry process acrylic staple fiber is prepared by drying;S3 staple fiber is first opened mixed and carded into web, and is made into fluffy web according to random arrangement, and then is made into dry process acrylic staple fiber nonwoven fabric by mechanical puncture reinforcement.The dry process acrylic staple fiber is first opened mixed and carded into web, and is made into fluffy web according to random arrangement, and then is made into nonwoven fabric product with higher porosity in horizontal and vertical directions and uniform pore size distribution, good water absorption and water permeability, high strength, strong deformation resistance, soft texture and relatively fluffy structure, which meets the needs of downstream customer industrial environment.

The application provides a functional fiber and a preparation method and application thereof in adsorbing hydrogen sulfide gas, and relates to the technical field of adsorptive materials. Firstly, the acrylic fiber is aminated to load amine group functional groups on the fiber, so that the fiber has anion exchange performance; then metal ion exchange is performed to load metal ions on the fiber; finally, a coordination reaction between the metal ions and organic ligands is utilized to form a porous metal organic framework on the fiber, thereby obtaining the functional fiber. The functional fiber contains active metal sites and can adsorb hydrogen sulfide gas. Meanwhile, the functional fiber has a porous structure, so that the adsorption capacity of hydrogen sulfide gas can be further improved. When the functional fiber is used for adsorbing hydrogen sulfide gas, the fiber material itself has excellent hydrogen sulfide gas adsorption performance, and it is not necessary to perform alkali and oxide pretreatment loading before adsorption.

This invention provides a method for producing modacrylic fibers that allows for the recycling of modacrylic fiber products by dissolving modacrylic fiber products in an organic solvent to prepare a low-viscosity spinning stock solution, and then stably performing wet spinning using the obtained spinning stock solution. [Solution] A method for producing modacrylic fibers, comprising: a washing step of contacting a modacrylic fiber product with water or steam at a temperature exceeding 100°C under pressurized conditions; a dissolution step of dissolving the modacrylic fiber product obtained in the washing step in an organic solvent to obtain a spinning stock; and a step of wet spinning the spinning stock.

The application belongs to the technical field of textile fabrics, and particularly discloses a colored acrylic dye-free outdoor fabric, which is used to solve the problem of how to realize the ultraviolet resistance of the fabric, effectively avoid aging and color fading, and ensure the aesthetic property; specifically comprises a fabric main body, a colored acrylic layer is arranged on the fabric main body, polyester filaments are arranged in the colored acrylic layer, and a polyurethane varnish layer is arranged on the outside of the colored acrylic layer; on one hand, the colored acrylic layer, the polyester filaments and the ultraviolet resistance coating can realize the ultraviolet resistance of the fabric, effectively avoid aging and color fading, and ensure the aesthetic property; on the other hand, the setting of the nylon fiber layer, the spandex fiber layer and the colored acrylic short fiber layer can improve the elasticity of the fabric, so that the fabric can still maintain a good state under frequent use and complex environment, and the service life of the fabric can be prolonged.

This utility model relates to the field of plying machine technology and discloses a plying machine for processing high flame-retardant acrylic yarn, comprising: a plying assembly, the plying assembly including a worktable, a pay-off turntable movably connected to the left side of the top of the worktable, an integrated yarn spool fixedly installed on the top of the worktable, a take-up roller provided on the right side of the top of the worktable, and first flanges fixedly installed on the front and rear sides of the take-up roller; and a disassembly assembly, the disassembly assembly including a drive motor, a lead screw fixedly connected to the output end of the bottom of the drive motor, a screw block threadedly connected to the surface of the lead screw, and connecting rods movably connected to the left and right sides of the screw block. By setting up the disassembly assembly, the disassembly and assembly of the take-up roller can be realized, thereby facilitating the operator to quickly disassemble and assemble the take-up roller. At the same time, different lengths of take-up rollers can be replaced according to usage needs, improving the flexibility and convenience of equipment use and making it convenient for operators to use.

The present application relates to a kind of fiber-based mislayered laminated decorative sheet and its manufacturing process, belong to environmental protection decorative material technical field.It is especially related to a kind of fiber-based mislayered laminated decorative sheet and its manufacturing process, which is composed of square plate body and the thin edge of ladder, suspended thin edge extending from plate body outward, thin edge of ladder and suspended thin edge are adjacent arrangement;And the plate body, thin edge of ladder and suspended thin edge are all with polyester fiber and acrylic fiber as base material hot melt cold-pressing forming, by with fiber base material pressing forming fiber-based mislayered laminated decorative sheet with thin edge of ladder and suspended thin edge, so that through the buckling between thin edge of ladder and suspended thin edge can quickly realize assembly, and then simplify installation difficulty, can be applicable to ground, wall and ceiling installation.

The application provides a good color fixing performance acrylic yarn and a preparation method thereof, and the preparation method comprises the following steps: S1, hydrolysis treatment of the acrylic yarn in sodium hydroxide solution to obtain pretreated acrylic yarn; S2, grafting treatment of the pretreated acrylic yarn in finishing liquid to obtain modified acrylic yarn, the finishing liquid is prepared by dissolving methyl acrylate modified chitosan in acetic acid aqueous solution and adding ammonium persulfate, wherein the concentration of the methyl acrylate modified chitosan is 5-15 g / L, and the amount of the ammonium persulfate is 1.0-4.0% of the mass of the methyl acrylate modified chitosan; S3, dyeing of the modified acrylic yarn in a dye solution and then ultraviolet irradiation treatment to obtain the final product; the dye solution comprises 1.0-2.0% of bifunctional crosslinking agent, 0.5-1.0% of photoinitiator and 1-4% of cationic dye, in percentage relative to the weight of the yarn. The application realizes covalent bond combination of the dye and the fiber, and significantly improves the color fastness.