234results about "Dye addition to spinning solution" patented technology

The invention belongs to the technical field of functional fibers, and relates to colored multi-groove type regenerated polyester staple fibers and a preparation method thereof. The preparation method comprises the following steps: carrying out melt blending on the regenerated polyester and the color master batch, and spinning by a multi-groove spinneret plate to obtain the colored multi-groove regenerated polyester staple fiber. The cross section of the fiber is of a multi-groove structure, the linear density of the fiber is 3.33-11.11 dtex, the linear density deviation rate is-8%-8%, the breaking strength of the fiber is 3.3-4.5 cN / dtex, the elongation at break is 28.2-43.5%, the content of super-long fibers is 0-3 mg / 100 g, the defect content is 5-50 mg / 100 g, the crimp number is 9-13 / 25 mm, the crimp rate is 10%-16%, the fiber forming degree is larger than or equal to 85%, and the color fastness is larger than or equal to 4. The colored multi-groove type regenerated polyester staple fiber prepared by the method has good mechanical properties, color fastness and forming degree, ensures the quality of regenerated polyester, realizes efficient regeneration and utilization of waste polyester, can be applied to preparation of various clothing products, and has good development prospects.

The invention discloses a chitosan polyphenol composite spinning method and application of the chitosan polyphenol composite spinning method in artificial hair, and belongs to the technical field of bio-based spinning. According to the chitosan / punicalagin (CS / PL) colored composite fiber and the preparation method thereof, punicalagin and chitosan are subjected to mixed spinning through a wet spinning method, the chitosan / punicalagin (CS / PL) colored composite fiber is prepared, the degradability, biocompatibility and antibacterial property of chitosan are reserved, the composite fiber can be endowed with natural brown yellow, and the mechanical performance of the fiber is improved. The chitosan / punicalagin composite fiber prepared by the invention has excellent anti-swelling performance, mechanical performance, flexibility and flame retardancy which are obviously superior to those of commercially available artificial hair.

The invention relates to the technical field of polymer dye synthesis, in particular to a polymer coloring agent based on a binary acid chromophoric monomer, a color master batch, a fiber and a preparation method of the polymer coloring agent. The structural formula of the diacid chromophoric monomer is as follows: # imgabs0. The chromophoric monomer has extremely high thermal stability, and can maintain the chemical structural integrity and chromophoric performance in a high-temperature environment (250 DEG C). The heat-resistant characteristic is mainly derived from a highly stable aromatic skeleton formed by a parent nucleus through an expanded conjugated system and a rigid plane structure, and heat vibration energy is effectively dispersed; in addition, a thermal stable group (an all-carbon skeleton) is introduced through side chain modification to form a steric hindrance effect, and molecular movement at high temperature is inhibited. Due to the unique heat resistance of the monomer, the monomer can be completely matched with a high-temperature processing window (240-300 DEG C) of a polyester melt polymerization process, and a polymer-dye composite system with a stable structure is constructed through covalent bonding in ester exchange and polycondensation processes.

A waste polymer recycling process may include: (1) obtaining waste polymer (e.g., waste solution dyed carpet yarn); (2) pelletizing the waste polymer; (3) obtaining green and clear polymer; (4) providing an extrusion line that includes a dosing system, an extruder, a spinning machine, and a color sensor; (5) using the dosing system to dose a first amount of the pelletized waste polymer, a second amount of the green polymer (e.g., a second amount to offset a color of the first amount of the pelletized waste polymer), and a third amount of the clear polymer into the extruder; (6) forming the extruded polymer combination into carpet yarn using the spinning machine; (7) using the color sensor to determine a color of the carpet yarn and (8) using the dosing system to adjust at least one of the amount of pelletized waste polymer, green polymer, and / or clear polymer introduced into the extruder.

The invention discloses a poly (butylene succinate) composite fiber and a preparation method thereof. The preparation method comprises the following steps: 1) dissolving the photochromic dye, the antioxidant A and the ultraviolet light absorber in an oil-soluble solvent to obtain an oil-phase solution; 2) adding the oil phase solution into an aqueous solution containing an emulsifier, and emulsifying to obtain an oil-in-water emulsion; adjusting the pH value of the emulsion to 3-8 and the temperature to 20-100 DEG C; (3) adding a capsule wall material and a magnetic substance into water, adding the mixture into the emulsion at a constant speed, putting the mixture into an external magnetic field with controllable strength, and keeping the temperature at 20-90 DEG C for 0.3-5 hours to obtain the photochromic microcapsule with a shell with a special structure; and 4) adding the photochromic microcapsule into a spinning solution of the poly (butylene succinate) fiber, and then spinning to obtain the poly (butylene succinate) composite fiber.

The invention relates to a colored flame-retardant polyester fiber with efficient flame-retardant characteristic and a preparation method thereof.The preparation method comprises the steps that firstly, a PDI derivative with the end group being-NH2 is added into ethyl alcohol dispersion liquid of alpha-ZrP, alpha-ZrP-PDI colored efficient flame-retardant molecules obtained through a reaction are blended with a polyester chip powder matrix, and colored efficient flame-retardant master batches are obtained; and finally, blending the colored high-efficiency flame-retardant master batch and polyester chips, and carrying out melt spinning to obtain the colored flame-retardant polyester fiber. The limit oxygen index of the colored flame-retardant polyester fiber is greater than or equal to 32%, the vertical combustion grade is V0, the breaking strength is greater than or equal to 4.7 cN / dtex, and the washing color fastness at 60 DEG C is above grade 4. The alpha-ZrP and the PDI amino derivative react to form an ordered layered stacking structure, so that the flame-retardant effect is remarkably improved; the prepared colored flame-retardant polyester fiber not only has excellent flame retardance, but also has uniform color distribution and good mechanical strength.

This invention provides an in-situ polymerized yarn and its preparation method, relating to the field of yarn textile technology. The preparation method of this in-situ polymerized yarn includes the following steps: S1. Mixing a polymer, solvent colorant, and complexing agent in a specific ratio to obtain a spinning solution; S2. Simultaneously performing electrospinning, carding, and embedding to obtain a colored nanofiber / cotton composite sliver; S3. Drawing and spinning the sliver to produce yarn. By using colored nanofibers composited with a cotton web, the finishing process is eliminated to reduce contamination. The selection of polydimethyldiallyl ammonium chloride as a complexing agent in the spinning solution increases the volume occupied by the cross-linked structure formed by the complexing agent and dye, enhancing the cohesion with the polymer and improving its color fastness.

The present disclosure provides a photochromic thermal insulation fiber including a core layer and a sheath layer covering the core layer. The core layer includes about 99 parts by weight to 100 parts by weight of polypropylene and about 0.4 parts by weight to 0.6 parts by weight of a photochromic dye. The sheath layer includes about 98 parts by weight to 99 parts by weight of nylon and about 1 part by weight to 2 parts by weight of a near-infrared reflecting dye.

The invention relates to a preparation method of anti-dripping colored flame-retardant polyester fibers. The preparation method comprises the following steps: firstly, carrying out reaction on alpha-ZrP subjected to micromolecule amine pre-supported intercalation treatment and a PDI amino derivative to obtain alpha-ZrP-PDI anti-dripping colored flame-retardant molecules; then blending the alpha-ZrP-PDI anti-molten-drop colored flame-retardant molecules with a polyester chip powder matrix to obtain anti-molten-drop colored flame-retardant master batches, finally blending the anti-molten-drop colored flame-retardant master batches with polyester chips, and performing melt spinning to obtain the anti-molten-drop colored flame-retardant polyester fiber. And the PDI amino derivative is a PDI derivative with a terminal group of-NH2. According to the preparation method, the alpha-ZrP is subjected to pre-supporting intercalation treatment by adopting small molecule amine to increase the interlayer spacing of the alpha-ZrP, and then the pretreated alpha-ZrP reacts with the PDI amino derivative to form alpha-ZrP-PDI molten-drop-resistant colored flame-retardant molecules, so that the flame retardance and the molten-drop resistance of the polyester fiber are remarkably improved.

The present invention relates to a dope dyed polyethylene yarn and a functional fabric including the same, and more particularly, to a dope dyed polyethylene yarn having excellent color uniformity and a functional fabric including the same.A dope dyed polyethylene yarn according to the present invention contains a pigment, wherein L*, a* and b* measured under the following measurement condition satisfy the following expression: [Measurement condition]a measurement region is formed by winding the dope dyed polyethylene yarn around a planar substrate, computer color matching (CCM) is measured in the measurement region, and the CCM is measured at least n times (n is a natural number of 50 or more) every time the dope dyed polyethylene yarn is wound around the substrate 70 turns,(Cmax-Cmin) / Caver×1⁢0⁢0≤1⁢5[Expression]wherein Cmax, Cmin, and Caver represent maximum, minimum, and average values of any one selected from L*, a*, and b*, respectively.

A textile mill (100) includes a testing and recipe finalization station (104), pretreatment application machinery (106), dye application machinery (114), and a post-dye processing station (124). An associated process involves applying a pretreatment to the cellulosic fabric for cationizing the cellulosic fabric and applying a dye treatment to the cellulosic fabric. A recipe for the dyeing process includes a predetermined concentration of a cationizing agent of the pretreatment based at least in part on a desired concentration of the dyeing component. A two-stage drying and curing process for the pretreatment and other processing equipment and parameters are also described that ensure a high-quality dyeing process with reduced environmental impacts.

The invention discloses a yellow polyester color master batch as well as a preparation method and application thereof, and belongs to the technical field of polymer dye synthesis. The preparation method of the yellow polyester color master batch comprises the following steps: in the presence of a catalyst, carrying out prepolymerization reaction on a yellow monomer containing diester groups, dibasic acid and dihydric alcohol to obtain a prepolymer; and carrying out vacuum polycondensation on the prepolymer. The method is simple to operate and suitable for industrial production. The obtained yellow polyester color master batch has excellent migration resistance and color fastness, also has good thermal stability and polyester compatibility, can effectively reduce color migration of fiber products, and significantly improves color fastness and coloring uniformity.

The invention discloses a blue macromolecular polyester color master batch, a spinning product and a preparation method of the spinning product, and belongs to the technical field of macromolecular dye synthesis. The preparation method of the blue macromolecular polyester color master batch comprises the following steps: carrying out esterification reaction on a blue monomer containing diester groups, colorless binary acid and colorless dihydric alcohol in the presence of a catalyst to obtain a prepolymer; and carrying out condensation polymerization on the prepolymer under a vacuum condition. The preparation method is simple and easy to operate, a blue monomer is introduced into a macromolecular chain through a chemical reaction, and a color development part is embedded into the macromolecular chain through a covalent bond, so that the dye has higher migration resistance and color fastness compared with a small molecular dye, and the pollution to the environment during processing and use is reduced; the obtained blue polymer polyester color master batch has good thermal stability and good compatibility with polyester, can be directly used for polyester melt spinning, and can be subjected to transesterification with a polyester matrix during melt spinning, so that color migration is reduced, and the color fastness and coloring uniformity of a product are improved.

The invention discloses thermochromic dye as well as preparation and application thereof, and belongs to the technical field of fine chemical engineering. The preparation method comprises the following steps: firstly, taking a fluorane dye as a raw material, and introducing an amino group into a fluorane dye structure by utilizing a reaction between lactone and alkyl diamine; and then preparing the thermochromic dye by utilizing the aldehyde amine reaction between the amino fluorane dye and the benzyloxy hydroxy benzaldehyde. The parent structure of the prepared thermochromic dye fluorane is connected with an alkyl chain and a benzylbenzaldehyde structure through a stable covalent bond, and latent heat of phase change comes from Van der Waals force between methylene on the alkyl chain and conformation overturning energy of the alkyl chain in the structure. And two benzene rings in the benzyloxy hydroxy benzaldehyde structure are used for hindering temperature crystallization below the melting point, so that the material melting and crystallization processes are regulated and controlled.

A method for controlling fiber cross-alignment in a nanofiber membrane, comprising: providing a multiple segment collector in an electrospinning device including a first and second segment electrically isolated from an intermediate segment positioned between the first and second segment, collectively presenting a cylindrical structure, rotating the cylindrical structure around a longitudinal axis proximate to an electrically charged fiber emitter; electrically grounding or charging edge conductors circumferentially resident on the first and second segment, maintaining intermediate collector electrically neutral; dispensing electrospun fiber toward the collector, the fiber attaching to edge conductors and spanning the separation space between edge conductors; attracting electrospun fiber attached to the edge conductors to the surface of the cylindrical structure, forming a first fiber layer; increasing or decreasing rotation speed of the cylindrical structure to alter the angular cross-alignment relationship between aligned nanofibers in adjacent layers, the rotation speed being altered to achieve a target relational angle.

The present application belongs to the technical field of colored ultrahigh molecular weight polyethylene fiber, and relates to an ultrahigh molecular weight polyethylene colored fiber and a preparation method and application thereof. The preparation method is as follows: in the feeding stage of preparing ultrahigh molecular weight polyethylene through polymerization reaction of ethylene, inorganic dye microcapsules with a wall material of polyolefin are added to a reaction kettle, and after the polymerization reaction is completed, ultrahigh molecular weight polyethylene after in-situ polymerization and coloring is obtained, and then the ultrahigh molecular weight polyethylene after in-situ polymerization and coloring is subjected to gel spinning, so that the ultrahigh molecular weight polyethylene colored fiber is obtained. The gel spinning includes a hot drawing stage, the melting point of the wall material of the inorganic dye microcapsules is greater than the temperature of the polymerization reaction and less than the temperature of the hot drawing, and the inorganic dye microcapsules are mainly broken in the hot drawing stage. The ultrahigh molecular weight polyethylene colored fiber has high color fastness. The ultrahigh molecular weight polyethylene colored fiber can be applied to medical equipment.

A fabricating method of a heat-insulating and UV-resistant fabric includes the following steps. A melt-spinning step is performed on a raw material to form a plurality of fibers, in which the raw material includes a near-infrared reflecting masterbatch, the near-infrared reflecting masterbatch includes a near-infrared reflecting dye, and when a content of the fibers is 100 wt%, a content of the near-infrared reflecting dye is 0.5 wt% to 1.0 wt%. The fibers are weaved to form the heat-insulating and UV-resistant fabric. A post-processing dyeing step is performed on the heat-insulating and UV-resistant fabric.

A fabricating method of a heat-insulating and UV-resistant fabric includes the following steps. A melt-spinning step is performed on a raw material to form a plurality of fibers, in which the raw material includes a near-infrared reflecting masterbatch, the near-infrared reflecting masterbatch includes a near-infrared reflecting dye, and when a content of the fibers is 100 wt %, a content of the near-infrared reflecting dye is 0.5 wt % to 1.0 wt %. The fibers are weaved to form the heat-insulating and UV-resistant fabric. A post-processing dyeing step is performed on the heat-insulating and UV-resistant fabric.

A method of manufacturing an artificial turf fiber includes extruding a polymer mixture through at least one fiber profile opening of an extrusion plate to form an artificial turf fiber, where the fiber profile opening includes first and second end portion openings and a curved middle portion opening has at least one spine opening proximate to at least one end portion opening, allowing the extruded polymer mixture to travel along a distance between the fiber profile opening to a quenching unit, where the at least one spine opening is sized and positioned such that a net polymer mass flow in the extruded polymer mixture from a position of the spine opening to the at least one end portion of the fiber proximate the spine opening occurs before the fiber is quenched, and quenching the extruded polymer mixture in the quenching unit to form the artificial turf fiber.

A textile product including an information unit (90) that is provided in a predetermined shape on a textile fabric provided with a yarn (normal yarn(97)) that does not absorb light having a specific wavelength λ other than a visible light region, using a functional yarn (invisible yarn (96)) that absorbs light having the specific wavelength λ as a peak wavelength.

The problem to be solved by the invention is to provide a core-sheath composite monofilament for a screen gauze, the core-sheath composite monofilament having excellent abrasion resistance when woven into a high-definition mesh fabric and excellent anti-halation effects when forming a printing pattern on a screen without requiring a dyeing process. This core-sheath composite monofilament for a screen gauze satisfies requirements (a) to (c). (a) The reflectance in the entire region having an optical wavelength of 300 to 450 nm is 20.0% or less. (b) Only the core section contains a light-absorbing agent. (c) The breaking strength is between 7.0 cN / dtex and 9.0 cN / dtex.

Systems for producing M yarns, wherein M≥1, include N extruders, M spin stations, and a processor, wherein N>1. Each extruder includes a thermoplastic polymer having a color, hue, and / or dyability characteristic, which are different from each other. Each spin station produces one yarn comprising at least one bundle of filaments. Each spin station comprises at least one spinneret through which filaments are spun from at least two molten thermoplastic polymer streams received by the respective spin station and N spin pumps upstream of the spinneret for the respective spin station. Each spin pump is paired with one of the N extruders. The processor is in electrical communication with the N*M spin pumps and is configured to adjust the volumetric flow rate of the polymers pumped from each spin pump to achieve a ratio of the polymers to be included in each M yarn.

The invention relates to a self-colored recycled bicomponent PES yam production method suitable for use in outdoor textile materials.

The invention relates to a multifunctional monofilament capable of fading. More specifically, the present invention relates to a fadable multifunctional monofilament having a skin-core structure comprising an active substance or a functional filler. The invention further relates to a preparation method of the monofilament material and application of the monofilament material to brush materials such as toothbrushes.

This invention relates to a manufacturing technology for colored nylon, and more particularly to colored nylon, its manufacturing method, and its use. The colored nylon of this invention contains nylon structural units and color-developing structural units, the color-developing structural units contain dye color-developing groups, the chromaticity of the supernatant liquid obtained by mixing the colored nylon and an organic solvent in a weight ratio of 1:3 and steaming is 10 or less, and the difference in color intensity of the colored nylon is 0.2 or less. The manufacturing method of the colored nylon of this invention includes the step of bringing a condensate containing dye color-developing groups into contact with a nylon monomer to carry out a condensation reaction so that at least a portion of the dye color-developing groups are located between and / or at the ends of structural units formed by nylon units. The colored nylon according to this invention has excellent water resistance and organic solvent resistance, high dye uniformity, excellent dye stability, and furthermore, its manufacturing process consumes little energy, produces little pollution, and offers great economic and social benefits.

The invention belongs to the technical field of fiber materials, and relates to a method for preparing a flame-retardant PA66 film and a PA66 fiber with high color fastness. The method for preparing the flame-retardant PA66 film and the PA66 fiber with high color fastness is as follows: first, PA66 salt and dye molecule AM ​​are used as raw materials, and AM-PA66 salt is prepared by physical blending method, and then AM-PA66 salt is prepared by solid phase polymerization method to obtain AM-PA66 masterbatch, and finally AM-PA66 masterbatch and PA66 slices are mixed evenly, and melt extruded and then cooled to form a flame-retardant PA66 film with high color fastness; or, finally, AM-PA66 masterbatch and PA66 slices are mixed evenly, and melt extruded and then cooled to form a flame-retardant PA66 film with high color fastness. The product obtained by the present invention not only has high leveling rate, but also improves mechanical properties, and also has good flame retardancy.

The present invention refers to a method and device for the preparation of microfibres and nanofibres based on hyaluronic acid and / or a water-soluble metal or non-metal salt thereof or a mixture of salts and / or a derivative of hyaluronic acid by method of dry spinning, and two-dimensional or three-dimensional fibrous materials from this microfibres and nanofibres. The resulting 2D or 3D materials can be for example in the shape of layer or cotton wool. Furthermore, the present invention refers to a device for performing this method, that contains an extrusion part containing a pass-through channel, that has an inlet opening for feeding the spinning solution and a dispensing opening for dispensing the spinning solution and furthermore the device contains an air nozzle, the air outlet opening of which is arranged to direct the exiting air into the area surrounding the dispensing opening of the extrusion part parallel to the axis of the dispensing opening of the extrusion part.