438 results about "Disperse dye" patented technology

The invention provides a method for preparing an alkali-resistant liquid disperse dye by an anti-solvent crystallization method, which comprises the following steps: dissolving an alkali-resistant disperse dye solid in a low-boiling-point solvent, ultrasonically heating to destroy the crystal structure of the dye, and filtering to obtain a dye solution; dissolving a crystal control agent and a dispersing agent in a high-boiling-point solvent to obtain an anti-solvent; slowly adding the dye solution into the anti-solvent, stirring, cooling, and removing the low-boiling-point solvent after dye crystals are stable; the anti-solvent method is applied to preparation of the alkali-resistant liquid disperse dye for the first time, and compared with a traditional grinding method, the method has the advantages of low energy consumption, simple equipment and less pollution; the prepared alkali-resistant liquid disperse dye has the advantages that the particle size can be as low as 130nm, the storage stability is good, the deep dyeing property is improved compared with that of the conventional alkali-resistant liquid disperse dye, the dye utilization rate is high, the dyeing soaping fastness is higher than level 4, the dyeing COD value is reduced compared with that of the conventional dye with the same strength, the use is convenient, and the dyeing process is simplified.

The invention relates to the technical field of data processing, in particular to a liquid disperse dye for polyester fabrics and a use method thereof, and the dye comprises an azo or anthraquinone disperse dye main agent subjected to superfine grinding, a nonionic and anionic compound dispersant system, a fiber plasticizer and a stabilizer. According to the preparation method, molecular dynamics simulation and mesoscale dissipative particle dynamics simulation are combined, the synergistic effect of a dispersant adsorption configuration and double electric layer potential is quantified, and a nonlinear association rule of dynamic particle size control and dispersion stability is established; a multi-physics field coupling model is adopted to integrate fiber humidity, temperature gradient and pressure distribution parameters, and cross-scale collaborative optimization of microscopic interface action and macroscopic process parameters is achieved. According to the method, repetitive experiment iteration is replaced by digital design, the formula development period is remarkably shortened, the dyeing uniformity and the batch-to-batch reproducibility are improved, and the method is suitable for continuous dyeing production of high-density and superfine polyester fabrics.

The invention belongs to the technical field of textile production, and relates to an active disperse dye and a dyeing process. The reactive disperse dye comprises a dye matrix and a bis-aziridine chain segment grafted on the dye matrix, and-OCH2-is introduced to an aromatic ring para-position of the bis-aziridine chain segment as an electron-donating group. A dyeing process: after active disperse dye is dissolved, dyeing the textile; the textile consists of more than one of natural fibers and synthetic fibers; the dyeing temperature is 85-100 DEG C, and the dyeing temperature is higher than Tg of the synthetic fibers. According to the invention, a '-OCH2-' electron-donating group is introduced in the para-position of an aromatic ring of a diaziridine chain segment, and the conjugation effect and the induction effect of the group reduce the activation energy of C-N bond breakage, so that carbene can be efficiently generated without depending on a high-temperature or acid-base environment; the problems that in the prior art, the condition for generating carbene through a diaziridine chain segment is harsh, and the color fastness of the dyed textile is low when supercritical CO2 fluid is adopted for dyeing are solved.

The invention discloses a low-temperature one-bath dyeing process for a cotton-polyester blended fabric, which comprises the following steps: soaking the cotton-polyester blended fabric in an aqueous solution of a basic ionic liquid for pretreatment to obtain a pretreated fabric with liquid; mixing the pretreated fabric with the liquid with a reactive dye and a disperse dye, and then carrying out supercritical CO2 fluid dyeing to obtain a dyed fabric; the alkaline ionic liquid contains hydrophobic alkyl and is alkaline, alkaline anions and cellulose hydroxyl form a hydrogen bond network during pretreatment, a cellulose crystalline region is destroyed, and therefore the dye uptake is increased; during dyeing, the alkaline ionic liquid is used as a surfactant to be distributed on an interface of water and CO2 fluid to form a reverse emulsion, so that a microenvironment for the reactive dye to dye cotton fibers is provided; furthermore, alkaline anions of the alkaline ionic liquid can be subjected to exchange reaction with CO2 to generate carbonate, so that the polarity of a microenvironment is enhanced to be alkaline, the reaction activity of the reactive dye and the cotton fibers is improved, and the dye uptake is improved.

The invention provides a treatment device for wastewater generated after dyeing of a high-elasticity fabric. The treatment device comprises a coarse filter tank; the adjusting tank is arranged on one side of the coarse filtering tank. According to the treatment device for wastewater generated after dyeing of the high-elasticity fabric, fiber impurities, yarn broken ends and large-particle suspended solids are accurately intercepted from the coarse filtering tank of the pretreatment module, disperse dyes and colloid impurities are efficiently adsorbed and settled in the reaction tank, the sedimentation tank and the air floatation tank by means of a specially-made coagulant and coagulant aid combination, and the high-elasticity fabric is obtained. An anaerobic and aerobic biological reaction tank of the biochemical treatment module is used for deeply degrading organic pollutants in wastewater, and a fine filtering tank and a disinfecting tank of the deep treatment module are used for ensuring that the water is clear and transparent and the biological safety reaches the standard; various pollution indexes such as chromaticity, suspended matters, organic matters and microorganisms of the wastewater can be accurately attacked, so that the treated wastewater stably reaches or even is superior to the discharge standard, the purification efficiency is greatly improved, and the energy-saving and emission-reducing concept is met.

The invention provides high-grinding-efficiency color paste, a preparation method thereof and dispersed ink, and belongs to the technical field of dispersed ink, and the high-grinding-efficiency color paste comprises the following components in percentage by weight: 15%-30% of disperse dye toner, 15%-25% of a dispersing agent, 5%-15% of resin ammonium salt, 10%-20% of a dissolution promoting mixture, 0.5%-2% of a wetting agent and the balance of water; the dispersing agent comprises a hyperbranched polymer and a sodium naphthalene sulfonate improved polymer; the hyperbranched polymer takes a benzene ring as a center, hydrophobic groups and hydrophilic groups on a branched chain are randomly distributed, the hydrophilic groups of the branched chain comprise carboxylate and sulfonate, and the hydrophobic groups of the branched chain comprise alkane, ester and aryl. According to the invention, the hyperbranched polymer and the sodium naphthalene sulfonate improved polymer are mixed with the dispersing agent, so that the problem of abrupt change of ink viscosity can be avoided when the content of ink toner is relatively high, thereby obtaining the color paste with strong dispersion and high stability, and further obtaining the dispersed ink with good stability.

The invention discloses a polyester fabric printing process, which relates to the technical field of printing processes, and is characterized by comprising the following steps: fabric impurity removal, modification treatment, corona punching, color paste preparation, printing preparation, fabric printing, steaming process, and drying and shaping. The printing process of the polyester fabric is simple and orderly in steps and high in production efficiency, thread knot impurities and fine particle impurities adhered to the surface of the polyester fabric can be removed, the surface of the polyester fabric is guaranteed to be smooth and clean, water is not needed for impurity removal, water-free cleaning is achieved, and the printing process is simple and convenient. The disperse dye can be more tightly wrapped on the surface of the fabric through the film-forming characteristic of the adhesive, the washing operation is avoided, the water consumption is reduced, and the dye utilization rate is high, so that the generation of printing wastewater is reduced, the environmental pollution is reduced, and the requirements of environmental protection and sustainability are met.

The invention provides coating-free thermal sublimation ink and a preparation method thereof, the thermal sublimation ink comprises disperse dye color paste, an organic solvent, a surfactant and a water-soluble synthetic polymer, the water-soluble synthetic polymer is polyvinyl alcohol, and the content of the polyvinyl alcohol is 0.1-0.8% by mass; the organic solvent comprises a first organic solvent, the first organic solvent is dihydric alcohol, and the content of the dihydric alcohol is 10-20% by mass; the content ratio of dihydric alcohol to polyvinyl alcohol is (15: 1)-(150: 1). The ink has good transfer printing rate, definition, printing fluency and excellent standby performance.

The present application relates to a PDLC dimming film, consisting of a first transparent conductive substrate, a second transparent conductive substrate, and a dimming layer sandwiched between the first transparent conductive substrate and the second transparent conductive substrate. The dimming layer comprises at least two polymer-dispersed dye liquid crystal layers and a transparent conductive spacer layer disposed between the polymer-dispersed dye liquid crystal layers; the transparent conductive spacer layer consists of a first conductive layer, a second conductive layer, and a transparent base material layer sandwiched between the first conductive layer and the second conductive layer; and the sides of the first conductive layer and the second conductive layer facing away from the transparent base material layer respectively fit the polymer-dispersed dye liquid crystal layers. The present technical solution solves the problems in existing PDLC dimming films such as a low contrast ratio of visible light transmittance and off-state light leakage.

An aqueous ink for textile printing includes a disperse dye, a first dispersant selected from the group consisting of an alkali metal salt of an aromatic sulfonic acid, an alkali metal salt of an aromatic sulfonic acid-formalin condensate, an alkali metal salt of a beta-naphthalenesulfonic acid, and an alkali metal salt of a beta-naphthalenesulfonic acid-formalin condensate, and a second dispersant selected from the group consisting of an alkali metal salt of an aromatic sulfonic acid-formalin condensate and an alkali metal salt of a beta-naphthalenesulfonic acid-formalin condensate. The second dispersing agent is a copolymer of acrylate and alkylene oxide.

The invention discloses a preparation method and application of a multicolor double-dyed antibacterial polyester-cotton fabric, and the preparation method comprises the following steps: S1, mixing a polyester-cotton fabric, a disperse dye and a solvent, and carrying out high-temperature and high-pressure treatment to obtain a dyed polyester-cotton fabric; s2, dipping the dyed polyester-cotton fabric in a cyanuric chloride solution, and carrying out a first heating reaction to obtain a cyanuric chloride grafted polyester-cotton fabric; and S3, dipping the cyanuric chloride grafted polyester-cotton fabric in a sodium copper chlorophyllin aqueous solution, and carrying out a second heating reaction to obtain the multicolor double-dyed antibacterial polyester-cotton fabric. By controlling the process conditions of the polyester high-temperature and high-pressure dyeing process, the content of hydroxyl exposed on the surface of cotton fiber in the fabric is effectively increased while dyeing is performed, so that more sodium copper chlorophyllin is grafted on the surface of the fabric through cyanuric chloride, and the polyester-cotton fabric with diversified colors, excellent antibacterial effect and good toughness is obtained.

The invention relates to the technical field of dye preparation data processing, in particular to a liquid disperse dye suitable for high-temperature and high-pressure dyeing and a preparation method thereof.The dye comprises a composite dye matrix, a dispersion stabilizing system and a solvent medium, disperse black dye is formed by compounding disperse purple 93, disperse orange 288 and disperse blue 291 in the ratio of 1, and the disperse black dye is a liquid disperse dye suitable for high-temperature and high-pressure dyeing. And a nano-scale dispersion system is constructed by combining the synergistic effect of hexadecylamine / octadecylamine polyoxyethylene ether and lauryl amine polyoxyethylene ether. According to the preparation method, on the basis of a dynamic behavior prediction model, micelle formation dynamic data in a premixing stage, viscosity and particle size associated data in a shearing stage and thixotropic index change data in a homogenizing stage are integrated, and a surfactant proportion optimization instruction is generated; according to the invention, the stability of the dispersoid structure is controlled, the dyeing uniformity and color fastness are improved, and the wastewater COD discharge load and the production cost are reduced.

The invention provides a polylactic acid material environment-friendly skin-friendly natural antibacterial double-layer fabric and a preparation method thereof, and belongs to the technical field of fabrics. Polylactic acid long fibers, combed long stapled cotton yarns and antibacterial spandex are combined, a double-sided circular knitting machine is adopted for weaving, grey cloth is woven according to a designed organization structure, the grey cloth is subjected to pre-shaping, hair removal through cellulase, dyeing through reactive dye and disperse dye, liquid ammonia finishing is conducted after drying is conducted through loose drying equipment, and the antibacterial fabric is obtained. During shaping, soft oil finishing and preshrinking finishing are carried out, and the polylactic acid material environment-friendly skin-friendly natural antibacterial double-layer fabric is prepared. The polylactic acid fiber is combined with high-quality cotton yarn and antibacterial spandex, and meanwhile, the polylactic acid material environment-friendly skin-friendly natural antibacterial double-layer fabric is prepared through the special design of a weaving method and the working procedures of enzyme washing treatment, liquid ammonia treatment, silicone oil treatment and the like.

The invention belongs to the field of dyes, and particularly relates to an alkali-washable disperse dye containing carboxylic ester and a phthalic diamide structure and a preparation method of the alkali-washable disperse dye. The invention provides an alkali-washable disperse dye containing carboxylic ester and a phthalic diamide structure, the structural general formula of the alkali-washable disperse dye containing carboxylic ester and the phthalic diamide structure is as follows: # imgabs0. The invention also provides a preparation method of the alkali-washable disperse dye containing carboxylic ester and the phthalic diamide structure, and the preparation method comprises the following steps: preparation of a coupling component, preparation of a diazonium salt solution, and coupling reaction. According to the alkali-washable disperse dye containing the carboxylic ester and phthalic diamide structure, carboxylic ester groups with high polarity exist in the dye structure, the affinity of the dye on polyester fibers can be improved, and therefore the alkali-washable disperse dye is endowed with excellent washing performance and has wide application prospects.

The invention provides a washing-free digital dyeing adhesive with a disperse dye one-way loading function and a preparation method of the washing-free digital dyeing adhesive. The washing-free digital dyeing adhesive is prepared by taking dibutyltin dilaurate as a catalyst, isophorone diisocyanate, polyadipic acid-1, 4-butanediol ester, hydroxyl-terminated polyoxy silane, 2, 2-dimethylolbutanoic acid, 1, 4-butanediol ester, 1, 4-butanediol ester, hydroxyl-terminated polyoxy silane, 2, 2-dimethylolbutanoic acid, 1, 4-butanediol ester, 1, 4-butanediol sequentially carrying out polycondensation and chain extension reaction on 1, 4-butanediol, and then adding 2-diacetylmonoxime for terminating; and finally, neutralizing to obtain the organic silicon modified waterborne polyurethane emulsion. The adhesive is applied to digital jet dyeing of disperse dyes of polyester fabrics, the procedures of reduction cleaning and water washing can be omitted, the color yield of the dyed fabrics is improved by 14-20% compared with that of pure dye ink jet dyeing, the dry rubbing fastness is improved by 2 levels, the wet rubbing fastness is improved to 1 level, and the adhesive has a wide application prospect.

The utility model discloses a grinding device for disperse dye production, and relates to the technical field of disperse dye grinding. The grinding device for disperse dye production comprises a bottom plate, a grinding box is fixedly connected to the upper surface of the bottom plate, a discharging assembly and a grinding assembly are fixedly connected to the inner wall of the grinding box, two sliding grooves are formed in the inner wall of the right side of the grinding box, a filter plate is arranged in the grinding box, and two sliding rods are fixedly connected to the surface of the right side of the filter plate; the right ends of the two sliding rods extend into the two sliding grooves correspondingly, springs are fixedly connected to the surfaces of the upper sides and the lower sides of the sliding rods correspondingly, and the opposite ends of the two springs are fixedly connected with the inner walls of the upper sides and the lower sides of the sliding grooves correspondingly. And after grinding, disperse dye with large particles can be conveyed into the collecting assembly through the obliquely arranged filter plate, so that the situation that the whole mass is reduced due to the fact that the dye with the large particles is mixed with normal dye after being processed is avoided.

The invention belongs to the technical field of textile materials, and relates to an environment-adaptive multi-spectrum camouflage cloak and a preparation method thereof. Comprising a cloak body, the cloak body is made of composite fabric, the composite fabric sequentially comprises a wear-resistant layer, a waterproof layer and a close-fitting layer from outside to inside, and the surface of the wear-resistant layer is sequentially coated with a thermochromic dye layer, a far infrared plating layer and a visible light hiding layer from bottom to top; the thermochromic dye layer is formed by compounding disperse dye and bistable thermochromic microcapsules, and the visible light stealth layer is prepared from photonic crystal gel; and the far infrared plating layer is prepared from an indium tin oxide film. The desert camouflage is switched below 5 DEG C, the woodland camouflage is switched above 60 DEG C, and different regional environments are matched; according to efficient multi-spectrum camouflage, the color difference between the visible light band and the background is smaller than or equal to 1.95, three emissivity levels are formed in the infrared band, and the thermal imaging detection probability is reduced.

The present invention provides a dark red disperse dye, which comprises a dye composition and an auxiliary agent, the weight ratio of the dye composition to the auxiliary agent is 1: 0.5-5, and the dye composition comprises the following components by weight: 35-85% of a component A composed of one or two of compounds represented by a formula (I); 5-40% of a component B composed of a compound represented by a formula (II); the component C is composed of one or two of the compounds shown in the formula (III), and the auxiliary agent is selected from one or a mixture of more of a dispersing agent, a dispersing agent and a surfactant. # imgabs0 # wherein X is chlorine or bromine, # imgabs1 # imgabs2 # wherein R and R'are each independently a methyl group or a benzyl group and are different.

The invention provides a disperse dye composition, a disperse dye and a preparation method and application thereof. The disperse dye composition provided by the invention has excellent lifting power and color fastness. The disperse dye composition comprises the following components: a component A shown as a formula (I): # imgabs0 # in the formula (I), wherein X represents halogen; the component B is shown as a formula (II) and / or a formula (III); the component C is shown as a formula (IV); the component D is shown as a formula (V); the component E is selected from one or a combination of more than two of the following formulae (VI)-(VII): # imgabs 4 # and # imgabs 5 #, wherein X1 represents-H,-Cl or-Br; in the formula, R1 represents-H or-NHCOCH3; r < 2 > and R < 3 > respectively and independently represent-CH < 2 > COOCH < 3 >,-CH < 2 > C < 6 > H < 5 > or-C < 2 > H < 4 > COOCH < 2 > COCH < 3 >.

The invention relates to a partition control method based on a polymerized disperse dye liquid crystal dimming film, and belongs to the technical field of dimming films. The method comprises the steps that voltage control is conducted on conducting layers of the dimming device through a voltage adjusting device, the conducting layers are composed of a first conducting layer and a second conducting layer, each conducting layer comprises a plurality of independent control areas, and the first conducting layer and the second conducting layer are each provided with an electrode unit and are electrically connected with electrodes of the voltage adjusting device. The voltage adjusting device is based on phase angle control of an alternating current power supply, and the effective value of the input voltage is changed by adjusting the trigger conduction angle of the electrode unit in the independent control area, so that fine regulation and control of the light transmittance and haze of the dimming film are realized. The method solves the problems of step abrupt change and power grid sensitivity of traditional dimming film partition control, realizes accurate partition control, improves the consistency of the dimming effect, and reduces the complexity and cost of the system.

Provided is an ink jet recording method having excellent ejecting stability and capable of recording a fluorescent-colored image with an excellent color developability and abrasion resistance. The ink jet recording method includes a recording step of ejecting an aqueous ink from a recording head of an ink jet system and applying the aqueous ink to a recording medium and a heating step of heating the recording medium applied with the aqueous ink at a temperature TH (° C.). The aqueous ink contains a first resin particle and a second resin particle, the first resin particle is dyed with at least one fluorescent dye selected from the group consisting of a basic dye, a disperse dye and an oil-soluble dye, and contains a cyano group-containing unit, and the second resin particle does not include any coloring material therein.

The invention provides a dyeable high-temperature-resistant modified meta-position aramid fiber and a preparation method thereof. The modified meta-aramid fiber is mainly prepared from a spinning solution prepared from m-phenylenediamine, methyl 3, 5-diaminobenzoate, 3, 3 '-diaminodiphenyl sulfone and an isophthaloyl dichloride copolymer through dry spinning, and the dye uptake of a disperse dye is not lower than 85%; the thermal decomposition temperature is not less than 400 DEG C. The preparation method comprises the following steps. S1, fully continuous polymerization; s2, continuously neutralizing and conveying; s3, direct spinning; and S4, fiber forming and post-treatment. The method has the advantages that (1) the quality difference between batches in the traditional intermittent method is eliminated, and the uniformity and stability of the product performance are realized; and the preparation process is compact, the production efficiency is high and the energy consumption is low. And (2) the dyeing performance of the prepared fiber is obviously improved, the inherent high-temperature-resistant characteristic of the aramid fiber is maintained, and the mechanical property is excellent. And (3) the application range of the meta-position aramid fiber is expanded.

The invention relates to the technical field of spectral analysis, in particular to a disperse dye component spectral analysis and identification system based on trace detection, which comprises a wave band interception module, a perturbation extraction module, a spectrum curve identification turning point recording fluctuation direction and a continuous extraction main peak core area expansion two-side generation analysis area, a phase shifting module is used for analyzing a curve fragment lifting relation and a turning sequence to generate a trajectory diagram; and a dye locking module is used for extracting a dye component with the highest matching degree by matching trajectory features to generate a candidate set. According to the method, a core peak area is locked through the fluctuation direction and continuity of a curve turning point, secondary wave crests are discriminated through an adjacent slowly-changing section, a disturbance sequence is formed by combining a mass center offset ratio and curvature connection, a curve fragment lifting relation and a turning sequence are analyzed to generate track mapping, and dye components are screened through track arrangement and offset symmetric matching. And the frequency distribution interval continuity and peak value overlapping verification ensure reliable identification.

The application discloses a low-temperature one-bath dyeing process for polyester-cotton blended fabric, which comprises the following steps: soaking the polyester-cotton blended fabric in an aqueous solution of alkaline ionic liquid for pretreatment to obtain a pretreated fabric with liquid; then mixing the pretreated fabric with liquid with reactive dyes and disperse dyes, and then performing supercritical CO2 fluid dyeing to obtain dyed fabric; the alkaline ionic liquid contains hydrophobic alkyl groups and has alkalinity; during the pretreatment, the alkaline anions form a hydrogen bond network with the hydroxyl groups of cellulose, thereby destroying the crystalline region of cellulose and increasing the dyeing rate; during the dyeing, the alkaline ionic liquid is distributed on the interface between water and CO2 fluid as a surfactant to form an inverse emulsion, thereby providing a microenvironment for the dyeing of cotton fibers by the reactive dyes; in addition, the alkaline anions of the alkaline ionic liquid can exchange with CO2 to generate carbonates, so that the polarity of the microenvironment is enhanced to be alkaline, and the reactivity of the reactive dyes and cotton fibers is improved, thereby improving the dyeing rate.

The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a method for dyeing polyimide yarn with double dyes. Comprising the following steps: (1) injecting dispersed dye liquor into a coloring device, adsorbing the dispersed dye liquor by polyimide yarns in a winding process, and winding the polyimide yarns into loose cone yarns after extrusion and coating treatment; (2) performing steaming color fixation treatment on the slack cone yarns in the step (1), then performing reduction cleaning and water washing, dehydrating and drying to obtain polyimide primarily-dyed yarns; (3) the cationic dye liquor is injected into a coloring device, the polyimide primarily-dyed yarn adsorbs the cationic dye liquor in the winding process, and the polyimide primarily-dyed yarn is wound into loose cone yarn after being extruded and smeared; (4) performing steaming color fixation treatment on the slack cone yarns in the step (3), then performing soaping and water washing, and performing dehydration and drying to obtain double-dye dyed polyimide yarns; a two-step dyeing process is adopted, firstly, the disperse dye is used for primary dyeing, then the cationic dye is used for deepening dyeing, and the prepared polyimide dyed yarn is high in dyeing depth and good in dyeing fastness.

According to the easy-to-dye spandex and the preparation method thereof provided by the invention, the polyether ester polyol with a specific structure is added into a diol raw material in a spandex preparation process, so that a molecular soft segment of the prepared spandex fiber contains a specific aromatic group-polyether block structure. Compared with conventional spandex, the easy-to-dye spandex has the advantages that the dye-uptake rate and the color fixing capacity of the spandex to disperse dyes and acid dyes can be increased under the condition that the mechanical property of the spandex is not lost. By adjusting the mass ratio of the aromatic group-polyether block structure in the spandex molecule soft segment, the spandex has better alkali resistance under the condition of sufficient dye uptake and fixation rate.

The present application relates to a kind of acrylic fabric dyeing and finishing process, including low temperature adding disperse dye, and glacial acetic acid is used to dye fabric, when the dosage of disperse dye exceeds 2.0%, it needs to be reduced twice cleaning, when the dosage of dye is 0.5%~2.0%, it needs to be reduced once cleaning, remove surface attached disperse dye;When the dosage of dye is 0.5% or less, it does not need to be reduced cleaning, after completing reduction cleaning, adding organic acid to fabric for acid neutralization treatment, dehydration after tank, opening, setting.The present application can realize energy saving and time saving in dyeing process, improve the turnover rate of dyeing vat, can satisfy full color system dyeing, high dye uptake, bright color, high color fastness, good cloth surface quality.After dyeing, the hand feeling is softer than conventional polyester.

The invention relates to a bright-color gradient-color safety belt and a production process thereof, and relates to the technical field of fabric production processes, and the bright-color gradient-color safety belt comprises a gradient-color woven belt and a color optimization finishing agent, the color optimization finishing agent comprises the following components in parts by mass: 20-30 parts of nano disperse dye, 10-15 parts of an ultraviolet light absorber, 5-10 parts of mesoporous silica, 15-20 parts of a color fixing agent, 5-8 parts of an organic silicon softening agent, 2-4 parts of a fluorescent whitening agent, 1-2 parts of a pH buffering agent and 30-40 parts of a solvent. The production process comprises the following steps: weaving more than two yarns with different colors to obtain a gradient yarn-dyed woven belt; the preparation method comprises the following steps: removing impurities, flattening to obtain a treated braid, padding the treated braid in a color optimization finishing agent, washing with water, fixing color, shaping in cold water, drying after treatment, packaging and storing to obtain the gradient color safety belt with bright color. The gradient color safety belt has the effect of improving the optical performance, the color fastness and the structural stability of the gradient color safety belt, and has a good safety protection function and durability.

The invention relates to the technical field of water-based gravure ink, in particular to a preparation process of water-based gravure ink. The existing technical problems of high environmental load, poor wettability and sewage generation of water-based gravure ink are solved. The preparation method comprises the following steps: carrying out polymerization cross-linking reaction on a water-based acrylic polymer and a hydrophilic caprylic capric triglyceride monomer mixture to obtain a cross-linked emulsion; the preparation method comprises the following steps: carrying out mixing dispersion treatment on a disperse dye, the emulsion, an organic solvent, a surfactant, deionized water and an auxiliary agent, grinding, filtering, and introducing a modified polyether composition to obtain the water-based gravure ink. The fineness of the water-based gravure ink is lt; the glossiness is 0.5 mu m and the glossiness is gt; the tinting strength is 100%, and the adhesion fastness is 99%; the VOC content is 0%; the storage stability is 4 years; the surface tension is 15mN / m; in the preparation process, the COD (Chemical Oxygen Demand) of the wastewater is 2mg / L, and the chromaticity is 1 degree.

The invention discloses a dyeing and finishing process for polyester warp knitted super-soft fabrics, and the specific steps are as follows: pre-setting, napping, resetting, dyeing, cleaning, heat setting, inspection, and packaging; wherein disperse dyes are used in a co-bath with softeners, dispersants, and carriers during dyeing, and the carrier is obtained by mixing benzyl benzoate, alkyl polyglucoside, sucrose fatty acid ester, and propylene glycol alginate according to a mass ratio of 8-10:3-4:2-3:1-2. The invention shortens the process flow, reduces production energy consumption, greatly improves production efficiency, can be discharged from the cylinder at 60°C, does not produce wrinkles and other problems, and reduces the water and electricity consumption of this part, and has a better application prospect.