50results about "Dye addition to spinning solution" patented technology

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.

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.

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.

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.

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.

Various methods of coloring a stream of polymer melt to produce filaments to a desired and consistent color and luster may include adding one or more colorants to the polymer stream at one or more selected locations in the flow of the stream of the polymer melt before entering and through an extruder. The color of the polymer melt and the extruded filaments may be determined by sensors at selected locations within the extruder and after the filaments have been extruded. A comparison of the sensed color to the desired color may be made and corrective actions may be taken if the color deviates from the desired color. The corrective actions may be to discard some of the polymer melt and / or the extruded filaments, or to make changes to the amount of colorant being added at one or more of the locations in the process.

The invention discloses a cotton fiber direct dye less-water dyeing method based on an electrostatic spinning technology, and belongs to the technical field of textile chemical industry. The traditional cotton fiber dyeing mainly adopts a water bath dipping dyeing method which can generate a large amount of dyeing wastewater, but the method is a green and environment-friendly dyeing technology, and the adopted dyeing process comprises the following steps: by taking a PVA spinning solution as a carrier, depositing micro-nano fibers carrying a cationic modifier polyepichlorohydrin amide and a dye on a cotton fiber net, and carrying out dyeing on the micro-nano fibers to obtain a dyed cotton fiber net; according to the method, colored micro-nano fibers are loaded accurately, then boiling is carried out, a cationic modifier can be released to chemically react with cotton fibers, cationic modification is effectively carried out on the cotton fibers, and binding sites of the cotton fibers and dye are increased; meanwhile, the direct dye is rapidly dyed and fixed by virtue of the directness of the direct dye and the electrostatic attraction between the direct dye and the modified cotton fiber, so that synchronous coloring and ecological fixation are realized. The process can basically realize zero discharge of printing and dyeing wastewater.

The invention belongs to the technical field of anti-counterfeiting fibers, provides a front and back different-color and different-section composite anti-counterfeiting fiber and a preparation method and application thereof, and aims to solve the problems of regularization of anti-counterfeiting characteristics, simplification of information dimensions and insufficient anti-counterfeiting levels caused by periodic dependence of a production process of existing anti-counterfeiting fibers. The anti-counterfeiting fiber is characterized in that the anti-counterfeiting fiber has a non-circular cross section contour, the front and back areas of the anti-counterfeiting fiber respectively present front and back heterochromatic chromatographic matrixes which are distributed aperiodically along the axial direction, and a functional anti-counterfeiting material is dispersed and distributed in at least one color section; according to the preparation method, a double-channel independent aperiodic signal system based on chaotic signal modulation is adopted, and multi-channel space partition co-extrusion molding is carried out. By adopting the technical scheme, the complexity and uncertainty of the anti-counterfeiting feature can be remarkably improved, reverse engineering cracking is effectively prevented, and the anti-counterfeiting safety is improved.

The present invention relates to a kind of core-sheath composite fiber and the profiled fiber and fabric formed by it.The sheath component of the core-sheath composite fiber is easily soluble polyester, and the core component is annular with an opening on the cross section of single fiber, the opening angle is 10°-60°, and the contact of the core component and the sheath component is wavy line shape;The profiled fiber formed by the weight reduction of the core-sheath composite fiber has continuous grooves distributed along the fiber axis on the outer surface.The core-sheath composite fiber of the present invention can be used to prepare fabric, and has excellent loftiness, lightness and water absorption and waterproof properties after weight reduction.

The present invention addresses the problem of providing a colored fiber having excellent heat generation suppression and fastness. The present invention also addresses the problem of providing a method for manufacturing the colored fiber, and a fiber product.　This colored fiber includes fibers and a compound represented by formula (1).

The invention discloses a water-repellent flame-retardant suede fabric and a preparation method thereof, and belongs to the technical field of functional textile materials. The preparation method comprises the following steps: firstly, carrying out melt blending granulation on polyester chips, polydimethylsiloxane chips and an inorganic nano dye according to a specific ratio, so as to prepare the colored water-repellent flame-retardant polyester master batch. And then, by taking the master batch as an'island 'component of the sea-island fiber and soluble polyester as a'sea' component, spinning to obtain the colored water-repellent sea-island fiber. And finally, weaving gray cloth by taking the fiber as a raw material, and sequentially carrying out processes of splitting and shaping, fuzzing, soaking in a sodium silicate solution, heat treatment and the like to form a SiO2 deposition layer on the surface of the fiber and improve the flame retardance so as to obtain a final product. The blended spinning process and the after-finishing process are combined, so that the obtained suede fabric has excellent water repellency and flame retardance at the same time, the specific soft hand feeling and good mechanical property of suede are kept, and the comprehensive performance is excellent.

A manufacturing apparatus for double-sided yarn for artificial turf is provided. In one embodiment, the apparatus may include a first liquid supply pipe to which molten first liquid is supplied, a second liquid supply pipe arranged in a space physically separated from the first liquid supply pipe to which molten second liquid is supplied, and a junction where the first liquid that flowed in through the first liquid supply pipe and the second liquid that flowed in through the second liquid supply pipe merge.

One or more embodiments of the present invention relate to a resin composition which contains at least a polymer (A) and a polymer (B), wherein: the polymer (A) contains one or more monomers that are selected from the group consisting of acrylonitrile, vinyl halides and vinylidene halides; the polymer (B) dissolves in benzyl alcohol; and from 70 parts by mass to 92.5 parts by mass of the polymer (A) and from 7.5 parts by mass to 30 parts by mass of the polymer (B) are contained if the total amount of the polymer (A) and the polymer (B) is taken as 100 parts by mass. The present invention provides a synthetic fiber which is easily dyeable with an acidic dye without requiring use of a special facility or heating to high temperatures.

Spandex fiber compositions are provided that have reduced grain peeling effects. Methods for making and using these compositions are also provided.

The application discloses an antioxidant electrostatic spinning mask cloth and a preparation method thereof, and belongs to the technical field of electrostatic spinning nanofiber membrane materials. The method comprises the following steps: (1) washing cuttle ink sacs, collecting cuttle ink, adding deionized water, mixing and stirring for 4-8 hours, centrifugally collecting melanin precipitates, and then freezing and drying after washing to obtain cuttle melanin particles, wherein the average particle size of the cuttle melanin particles is 100-200 nm; (2) dissolving collagen peptide, the cuttle melanin particles prepared in step (1) and polyvinyl alcohol in an acetic acid solution, ultrasonically homogenizing to obtain a spinning liquid, and then performing electrostatic spinning on the spinning liquid, and finally vacuum drying to obtain the antioxidant electrostatic spinning mask cloth. The method is simple in process, and the prepared product, the mask cloth, is excellent in mechanical properties, and good in moisturizing and antioxidant effects.

The invention relates to the technical field of functional dyes, and particularly discloses a high-weather-resistance blue dye and a preparation method and application thereof.The preparation method of the high-weather-resistance blue dye comprises the following steps that S1, mitoxantrone, 3-bromine-1-amidonaphthalene, a catalyst and an organic solvent are mixed and then heated and stirred for a reaction, a solid is obtained through filtering, and the solid is dried; washing with water and ethanol, and drying to obtain a dye intermediate A; and S2, mixing the dye intermediate A with 2-amino-4 '-methoxybenzophenone, a catalyst and an organic solvent, heating, stirring and reacting, extracting, carrying out rotary evaporation to obtain a solid, recrystallizing, and drying to obtain the high-weather-resistance blue dye. The benzophenone structure is introduced into the anthraquinone dye, so that the light resistance and the heat resistance of the anthraquinone dye are synchronously improved fundamentally.

The invention discloses a high-hollowness warm-keeping colored polyester filament yarn, and relates to the technical field of polyester yarns. According to the section of the filament, a closed honeycomb-like stable structure is formed by sequentially connecting a plurality of arc-shaped filament body units, an internal hollow cavity is defined by the arc-shaped filament body units, and the degree of hollowness reaches up to 50%-85%. Through the design of the arc-shaped filament body unit, stress can be effectively dispersed when the fiber is stressed, so that the fiber has high breaking strength (not lower than 3.5 cN / dtex, preferably 5.2 cN / dtex) and excellent deformation resistance while keeping light weight and high hollowness. The'colored 'characteristic is realized through a stock solution coloring technology, the color fastness is high, and the damage of post-processing to the structure is avoided. Performance tests show that the heat retention property (the heat resistance can reach 0.044 m.K / W or above) and the draping sense (the draping coefficient ranges from 47% to 50%, and the crease recovery angle is 275 degrees or above) of the product are remarkably superior to those of traditional solid and single-hole hollow polyester yarn, the technical contradictions that the high hollowness degree and the high strength are difficult to achieve, and the excellent heat retention property and the ideal draping sense are difficult to achieve at the same time are perfectly solved, and the product is worthy of popularization and application. The fabric is especially suitable for the field of high-end warm-keeping clothes and fashionable dresses.

The invention relates to a compound, a rubber blend containing said compound, a vehicle tire comprising the rubber blend in at least one component, a process for producing the compound and the use of the compound as ageing protectant and / or antiozonant and / or dye. The compound according to the invention has the formula (I) wherein R1 is selected from the group consisting of benzyl groups, 1-phenylalkyl groups with a total of 7 to 18 carbon atoms and linear, branched and cyclic aliphatic C3 to C12 groups.

The invention relates to the technical field of functional dyes, and particularly discloses a high-weather-resistance dye and a preparation method and application thereof.The preparation method of the high-weather-resistance dye comprises the following steps that S1, 5-bromo-4-fluoroisatoic anhydride, 2, 4-dichloro-7-methylquinoline, an alkaline substance and an organic solvent are added into a reaction kettle to be stirred for a reaction, and a mixture is obtained; after the reaction is finished, pouring reaction liquid into ethanol, extracting by using an organic solvent, performing rotary evaporation, and drying to obtain a dye intermediate A; s2, stirring and reacting the dye intermediate A with 1-[(6-ethoxy-3-pyridyl) methyl]-4-piperidylamine, an organic solvent and a catalyst under a heating condition, pouring a reaction solution into water after the reaction is finished, separating, filtering to obtain a solid, recrystallizing, and drying to obtain the high-weather-resistance dye. Through innovative molecular structure design and selection of specific raw material combination, the novel yellow dye with a rigid conjugated skeleton and metal coordination capability is developed, and the defect of poor weather resistance of the dye is effectively overcome.

The material contains traceable particles that hold information about the manufacturing process of the material, which can be used to trace its origin, and provides gaskets that can be used to seal flanged fittings in the food and beverage industry, or to form compression packings used to seal around machinery such as valve shafts and pump shafts. [Solution] A gasket having filaments, comprising a polytetrafluoroethylene (PTFE) matrix and tracer particles 110 selected from fluorescent dye molecules and fluorescent dyes, wherein the tracer particles absorb light and emit light of a specific wavelength detectable by a microscope equipped with a filter set for the specific tracer particles, and the tracer particles are distributed throughout the matrix.

The invention discloses a nanofiber protective film integrated with a fluorescence sensing function as well as a preparation method and application thereof, and belongs to the technical field of functional materials and biosensing. According to the protective film, thermoplastic polyurethane (TPU) serves as a base material, hydrophobic fluorescent dye is embedded in fibers through an electrostatic spinning technology, hydrophilic fluorescent dye is immobilized on the surfaces of the fibers through covalent cross-linking, and an inner and outer double-layer dye loading structure is formed. The structure can generate specific fluorescence response when the snake venom protein is contacted, and multi-dimensional fluorescent fingerprints are formed. The invention also provides a toxin protective garment comprising the protective film, and the toxin protective garment integrates a signal acquisition module, a signal processing module and an early warning module, so that rapid identification and real-time alarm of toxin types can be realized. The invention has the advantages of excellent protection performance, high environmental adaptability and active sensing capability, and is suitable for special operation and outdoor safety protection.