115results about "Dye addition to spinning solution" patented technology

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.

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 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.

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 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.

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 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.

The invention discloses a cool regenerated colored polyamide fiber and a preparation method thereof, and belongs to the technical field of chemical fiber preparation. The preparation method comprises the following steps: firstly, melting and spinning cool master batch, regenerated chinlon chips and other raw materials to prepare cool regenerated chinlon POY (Polyester Pre-Oriented Yarn) fibers; meanwhile, melt spinning is conducted on the color master batch, the regenerated chinlon slices and other raw materials, and stock solution coloring regenerated chinlon POY fibers are prepared; and finally, stranding the two functional POY fibers through a false twist texturing process to prepare the cool regenerated colored chinlon DTY fiber. By means of the step-by-step spinning and plying elasticizing integrated technology, the cool feeling, coloring and regeneration environment-friendly characteristics are combined in the fiber manufacturing stage, and the final product has the comprehensive advantages of being excellent in cool feeling durability, high in color fastness, simplified in production technology and environmentally friendly.

A fiber comprising: A) from 40 wt% to 65 wt%; %, of a recycled polypropylene composition B) ) from 35 wt% to 60 wt% of a propylene homopolymer Wherein the Melt Flow Rate of the recycled polypropylene composition, determined according to the method ISO 1133 (230° C, 2.16 kg), ranges from 5.2 g / 10 min to 23.2 g / 10 min g / 10 min; the sum of the amounts of (A), (B) being referred to the total weight of (A) and (B) is 100.

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

The application discloses a kind of red dyed spandex fiber containing double-hydroxyl red dye and its preparation method, belongs to dye and fiber preparation technical field.The structure formula of double-hydroxyl red dye is.By dissolving double-hydroxyl red dye in solvent C, polyol, isocyanate is added, catalyst or reaction retarder is added or not added to carry out reaction;After reaction, cooling, chain extender is added or not added to the system, end-capping agent is added or not added to stir, stand to defoam, and red polyurethane spandex spinning solution is obtained;Red polyurethane spandex spinning solution is dry spinning again, and red spandex fiber can be obtained.The double-hydroxyl red dye is connected into spandex main chain in the form of covalent bond, the problems such as difficult dyeing of spandex fiber in later period, much wastewater and so on are solved, and the fiber has excellent rubbing fastness and migration resistance.

The invention discloses an anti-aging polyvinyl dyed fiber and a preparation method thereof, belongs to the technical field of polyvinyl fiber processing, and is used for solving the technical problem that the mechanical strength and the anti-aging performance of the polyvinyl dyed fiber in the prior art need to be further improved. The invention relates to a PE-g-MAH (polyethylene-graft-maleic anhydride) anti-aging material, which specifically comprises the following components in parts by weight: 60-70 parts of a polyethylene copolymer, 10-15 parts of PE-g-MAH, 8-12 parts of an anti-aging filler, 1-2 parts of an azo coloring agent and 3-4 parts of an additive. The polyvinyl dyed fiber is prepared by constructing a copolymerization matrix containing functional group modified polyethylene, hyperbranched epoxy modified zinc oxide and a hindered amine composite anti-aging system and taking PE-g-MAH as a compatilizer, so that the mechanical strength of the polyvinyl dyed fiber is effectively improved, and the polyvinyl dyed fiber has excellent anti-aging performance under an ultraviolet aging condition. The excellent mechanical property and extremely low color difference can be kept, and good aging resistance is achieved.

The invention discloses a colorless-phase black master batch, a colorless-phase black fiber and a preparation method of the colorless-phase black master batch, and belongs to the technical field of high polymer material coloring. Aiming at the defects of'dead black 'and'splicing black' technical color cast of the existing carbon black colored product, the master batch comprises a polyamide carrier, a coloring system (carbon black, phthalocyanine blue, permanent violet RL and dye blue 60) and a polymeric dispersant; master batches are prepared through twin-screw extrusion (nine-temperature-zone gradient heating), and the master batches and a carrier are further subjected to composite spinning to obtain colorless-phase black fibers. By means of spectrum complementary absorption of a coloring system, a value a and a value b of a product approach to zero (a is smaller than or equal to 0.1, and b is smaller than or equal to 0.1), an L value is 18-20, and neutral hue and high blackness are achieved; the dye blue 60 endows the transparent layering sense, the process is stable, the adaptability is high, and the method is suitable for the field of high-end products.

The application discloses a blue organic modified dye, a preparation method and application thereof, and belongs to the technical field of dyes and fiber preparation. The structural formula of the blue organic modified dye is. Solvent blue 908 is added into dry tetrahydrofuran, an organic alkali tetrahydrofuran solution and an alkylene oxide tetrahydrofuran solution are added, stirring reaction is carried out, standing is carried out, water is added for filtration, recrystallization is carried out, and the blue organic modified dye is obtained.(a) The blue organic modified dye is dissolved in a solvent A, polyols and isocyanic acid ester are added, a catalyst is added or not, a reaction retarder is added or not, a chain extender is added or not, a blocking agent is added or not, degassing is carried out, filtration is carried out, and a spinning solution is obtained; and(b) the spinning solution is dry spun to form a blue spandex fiber. The dye can solve the problems of difficult late dyeing of the spandex fiber, much wastewater and the like, the dye is combined with the spandex fiber through a chemical bond, and the dye has excellent dry and wet rubbing fastness and excellent migration resistance.

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 color deformation and deformation integrated cholesteric liquid crystal elastomer fiber preparation method and a high-temperature warning device. The preparation method comprises the following steps: preparing a mixture A; placing the mixture A on a heating stage to volatilize a first preset amount of dichloromethane solvent, adding a catalyst DPA, and uniformly stirring at room temperature to obtain a precursor solution; pouring a certain amount of the precursor solution into a needle tube, injecting the precursor solution into the PDMS hose at a preset flow rate by using an injection pump, and reacting in a dark environment until the dichloromethane solvent in the PDMS hose is completely volatilized; the PDMS hose is placed in a UV curing box to be subjected to ultraviolet irradiation, so that the cholesteric liquid crystals in the PDMS hose are subjected to a cross-linking reaction, and the color deformation and deformation integrated cholesteric liquid crystal elastomer fibers are formed in the PDMS hose. By introducing boric acid ester dynamic covalent bond molecules, the interior of the fiber is of a layered spiral structure, the fiber is endowed with more flexible temperature response characteristics, and the fiber can be reversibly deformed in a high-temperature environment along with color change at the same time.

The application discloses a photochromic polyhydroxyaliphatic ester / polylactic acid fiber and a preparation method and application thereof. The photochromic polyhydroxyaliphatic ester / polylactic acid fiber has a skin-core structure, the core layer material comprises a high molecular polymer, a dye and SnO 2‑x wherein 0

The application belongs to the technical field of laser, and relates to a method for manufacturing a PVA / dye flexible random laser based on an electrostatic spinning method. A mixed solution of PVA, ovalbumin, rhodamine dye and Au nano-particles is adopted, the sample size and the morphology of the spinning structure are controlled by controlling the voltage, the spraying distance and the needle tip size in the electrostatic spinning technology process, and then the wavelength and the mode of laser emission and other parameters are adjusted. The design is simple and intuitive, the method is flexible and convenient, the principle is reliable, and the method is easy to realize. The obtained flexible random laser is easy to be coupled with other photon devices, and the quantitative control of the laser property is easy to be realized.

Provided is an apparatus for manufacturing double-sided yarn for artificial turf. According to an embodiment, the apparatus may comprise: a first-liquid supply pipe through which a melted first liquid is supplied; a second-liquid supply pipe which is disposed in a space physically separated from the first-liquid supply pipe and to which a melted second liquid is supplied; and a confluence unit in which the first liquid introduced through the first-liquid supply pipe and the second liquid introduced through the second-liquid supply pipe converge.

The invention discloses a preparation process of a chemically regenerated stock solution colored antibacterial fiber, and belongs to the technical field of spinning. The preparation process comprises the following steps: conveying regenerated semi-dull polyester chips subjected to crystallization and drying treatment and dried coloring antibacterial master batches into a screw extruder in proportion for melting to obtain a spinning melt, then conveying the melt to a spinning manifold, metering the melt by a metering pump, and pressing the melt into a spinning assembly for spinning to form a primary tow; the coloring antibacterial master batch is prepared by melting, blending and extruding an antibacterial agent, a pigment, a dispersing agent and PET slices; the primary tows are subjected to post-heating, air-free area treatment, circular air blowing cooling, bundling and oiling treatment, pre-interlacing, drafting and sizing and winding treatment, and the dope-dyed antibacterial fibers are obtained. According to the method, the color fastness of the fiber is improved, the antibacterial function is integrally improved, the subsequent dyeing and antibacterial finishing links are omitted, and the method has the advantage of environmental protection.

The present invention relates to a colored nylon preparation technology, and disclosed are colored nylon and a preparation method therefor and an application thereof. The colored nylon comprises nylon structure units and chromogenic structure units. The chromogenic structure units comprise dye chromogenic groups. The chromaticity of a supernatant obtained by steaming a mixture of the colored nylon and an organic solvent in a weight ratio of 1:3 does not exceed 10, and the difference in color depth of the colored nylon does not exceed 0.2. The preparation method for the colored nylon comprises: enabling a condensate containing the dye chromogenic groups to be in contact with a nylon monomer for a condensation reaction, so that at least some of the dye chromogenic groups are located between and / or at the ends of the structure units formed from the nylon unit. The colored nylon provided by the present invention has excellent water resistance and organic solvent resistance, high dyeing uniformity and good dyeing stability, low energy consumption and little pollution in the preparation process, and good economic and social benefits.

A polyethylene terephthalate bulked continuous filament is manufactured by steps of melt-spinning, multi-step stretching a polyethylene terephthalate chip and a master batch chip for coloring, passing through a texturing nozzle, cooling, and winding and has an elastic modulus of 1.00E+07 to 5.00E+09Pa at a temperature range of 10° C. to 200° C., the filament being manufactured by steps of melt-spinning a polyethylene terephthalate chip and a master batch chip for coloring, multi-step stretching, passing through a texturing nozzle, cooling, and winding.

This invention relates to the field of medical dressings, and discloses a composite fiber membrane, its preparation method, and its applications. The composite fiber membrane includes a pH-responsive fiber membrane, a hydrophobic fiber membrane distributed on one side of the pH-responsive fiber membrane, and a hydrophilic fiber membrane distributed on the other side of the pH-responsive fiber membrane. The pH-responsive fiber membrane comprises polyethylene oxide, chitosan, and alizarin dye. This composite fiber membrane exhibits good antibacterial effects and unidirectional moisture-wicking function, and can also change color under different pH conditions, showing great promise for application in the field of medical dressings.