326results about How to "Improve dyeing uniformity" patented technology

The invention relates to polyester DTY fiber and a preparation method thereof. The preparation method comprises: metering a modified polyester melt, extruding, cooling, oiling, and winding to preparethe polyester POY fiber. According to the present invention, during the cooling, the longitudinal height is maintained, and the cross section area of the slow cooling chamber is increased while the plate surface temperature of the spinning plate is maintained by using the thermal insulation method; the material of the fiber is the modified polyester, the molecular chain of the modified polyester comprises a terephthalic acid chain segment, an ethylene glycol chain segment and a diol chain segment having the branched chain, the structure formula of the diol chain segment having the branched chain is defined in the specification, R1 and R2 are respectively and independently selected from straight chain alkylidene with a carbon atom number of 1-3, R3 is selected from alkyl with a carbon atomnumber of 1-5, and R4 is selected from alkyl with a carbon atom number of 2-5; the chromatic aberration [delta]E of the prepared fiber is less than 0.200; and the preparation process is simple and reasonable, and the obtained fiber has excellent performance.

The invention relates to polyester FDY fiber and a preparation method thereof. The preparation method comprises: metering a modified polyester melt, extruding, cooling, oiling, drawing, carrying out heat setting, and winding to prepare the polyester FDY fiber, wherein the unchanged longitudinal height is maintained during the cooling, the cross section area of the slow cooling chamber is increasedwhile the plate surface temperature of the spinning plate is maintained by using the thermal insulation method. According to the present invention, the material of the fiber is the modified polyester, the molecular chain of the modified polyester comprises a terephthalic acid chain segment, an ethylene glycol chain segment and a diol chain segment having the branched chain, the structure formulaof the diol chain segment having the branched chain is defined in the specification, R1 and R2 are respectively and independently selected from straight chain alkylidene with a carbon atom number of 1-3, R3 is selected from alkyl with a carbon atom number of 1-5, and R4 is selected from alkyl with a carbon atom number of 2-5; the chromatic aberration [delta]E of the prepared fiber is less than 0.200; and the preparation process is simple and reasonable, and the prepared fiber has excellent performance.

The invention relates to a continuous type colored loose fiber machining device, and belongs to the technical field of loose fiber dyeing. The continuous type colored loose fiber machining device comprises a spray-rolling type drying machine, a coiling roller, a cold-batch fixation device, cotton conveying rollers, a spray-rolling type washing machine, a conveyor belt and a squeezing device in sequence. Loose fibers are subjected to spraying dyeing by being horizontally clamped by a transmission component of the spray-rolling type drying machine, the coiling roller is arranged on the rear portion of a lower guide belt of the spray-rolling type drying machine and coils the dyed loose fibers to be loose fiber coils, the loose fiber coils are transferred to the cold-batch fixation device for cold-batch fixation, the loose fiber coils are conveyed to the spray-rolling type washing machine through the cotton conveying rollers, spray washing is carried out on the cotton conveying rollers when the cotton conveying rollers are conveyed by being horizontally clamped through the transmission component of the spray-rolling type washing machine, the washed loose fibers fall down on the conveyor belt behind the spray-rolling type washing machine under the gravity of the loose fibers themselves, and the loose fibers are conveyed to the squeezing device for dewatering. The continuous type colored loose fiber machining device can continuously produce colored loose fibers, and greatly lower processing cost.

The invention relates to a hair dye, especially a natural plant hair dye. Wherein, it is formed by mixed A and B solutions; A agent is formed by agent and metal chelant, while the agent can be guar gum, polyquaternary ammonium salt or glycol cellulose, and the chelant can be soluble ferric salt or ferrous salt; B agent contains pomegranate bark extractive and glycol cellulose; while it also can contain logwood extractive as color agent. The invention has short dye time, uniform dye and washing resistance, nearly without side effects.

The invention relates to a copolyester melt direct-spinning controllable multiple differential shrinkage composite fiber and a preparation method thereof. Terephthalic acid and ethylene glycol serve as raw materials, a third component of polyethylene glycol, a fourth component of diethylene glycol and a fifth component of pentaerythritol are added for copolymerization, a copolyester melt is prepared, pressurized through a melt pipeline and a pressurizing pump, conveyed to a spinning box, divided into two ways through two metering pumps, sent into a spinning assembly and a spinneret plate for extrusion and cooled and solidified to form two bundles of yarn, FDY (fully drawn yarn) is obtained after oiling wheel oiling, pre-interlacing, drawing and heat setting of one of the two bundles of yarn, the other bundle of yarn is oiled through an oil spraying nozzle and then led to two yarn guiding disks to obtain POY (polyester pre-oriented yarn), the FDY and the POY are input into a yarn doubling device and a main interlacing device simultaneously for composition, and the composite fiber is obtained after ultra-high-speed winding molding. The composite fiber adopts the better fine three-dimensional multi-layer structure and is large in potential controllable hot-shrinkage rate difference, good in fluffiness, hygroscopicity, air permeability, moisture retention, chromaticity and high color rendering uniformity, multiple in product function and high in additional value.

The invention relates to a method for dyeing wool / copper ammonia fiber blended fabrics. A bath process for dyeing is realized by adopting Lanasol dyes produced by US Huntsman Textile Effects (China) Co. Ltd. In the dyeing process, Abairun C is added as an anti-wrinkle lubricant and Abaixiao FFC-01 is added as a penetration enhancer. The method comprises the steps of dyeing and post treatment: (1) dyeing: putting the wool / copper ammonia fiber blended fabrics into an overflow dyeing machine, adding glacial acetic acid, the Abaixiao FFC-01, the Abairun C, glauber salt and the Lanasol dyes, keeping the temperature of 90+ / -2 DEG C for 20-30 minutes, cooling to 70+ / -2 DEG C, adding calcined soda and keeping the temperature for 50-70 minutes; and (2) post treatment: putting the dyed wool / copper ammonia fiber blended fabrics in soaping agent 209, adding calcined soda, treating at 80-90 DEG C for 20-30 minutes, putting in glacial acetic acid after rinsing and treating at 40+ / -2 DEG C for 10 minutes. The bath ratio in the dyeing process is 1:15-20, and the bath ratio in the post treatment process is 1:15-1:20. The invention has the advantages of good dyeing effect, good color fastness and little damage to the fabrics in the dyeing process.

The invention discloses a dispersion-reduction dyeing process for a cotton-polyester blended fabric. The dispersion-reduction dyeing process comprises a disperse dyestuff treating procedure and a vat dye treating procedure which are successively carried out. The disperse dyestuff treating procedure comprises dyeing, reduction cleaning, washing and pickling; the vat dye treating procedure comprises dip padding with a vat dye suspension, dip padding with a reducing solution, steaming, oxidation, soaping, hot washing and drying; in the disperse dyestuff treating procedure, a disperse dyestuff microcapsule method is used for dyeing; and in the vat dyestuff treating procedure, vat dye wet rapid-steaming pad dyeing process is employed. The dispersion-reduction dyeing process for the cotton-polyester blended fabric has the advantages of good level dyeing effect, small chromatic aberration and high color fastness, and is simple in process.

The invention discloses a disperse dye composition, which consists of an original dye and an aid, wherein the original dye consists of any 2-4 kinds of dyes selected from 0-2 kinds of dyes shown as a general formula (I), 0-2 kinds of dyes shown as a general formula (II), 0-2 kinds of dyes shown as a general formula (III) and 0-2 kinds of dyes shown as a general formula (IV), wherein R1, R4, R6 and R8 in the formula (I), formula (II), formula (III) and formula (IV) are independently hydrogen, methyl or methoxy; when R2 is hydrogen, R3 is 2-nitrobenzophenone or 2,4-dinitrophenyl; when R2 is methyl, ethide or cyanoethyl, R3 is benzyl or 2-methyl benzyl; R5 and R7 are independently hydrogen, nitryl, methyl or ethyl; and R9 is methyl, ethyl, benzyl, 2-methyl benzyl or 2-nitrobenzophenone. The invention further discloses a dyeing method for a dacron. The disperse dye composition provided by the invention has the advantages of high dispersing property and high oxygen resistance.

The invention discloses a printing and dyeing process which comprises the following steps: (1) preprocessing; (2) dyeing, namely putting a preprocessed fabric into a dyeing solution, heating the dyeing solution to 45-55 DEG C at speed of 1-2 DEG C / min, and keeping the temperature for 20-40 minutes; adding sodium chloride, heating to 60-70 DEG C at the speed of 1-2 DEG C / min, and keeping the temperature for 20-40 minutes; adding sodium carbonate, heating to 80-90 DEG C at speed of 0.2-1 DEG C / min, and keeping the temperature for 20-40 minutes; finally cooling at the speed of 1-2 DEG C / min to finish the dyeing process; (3) post-processing. According to the printing and dyeing process, the dye-uptake rate and the dye-uptake process are adjusted to be optimal through controlling temperature ranges in the dyeing process, so that a printed and dyed product is good in dyeing uniformity and high in color fastness. The printing and dyeing process is simple, can realize large-scale industrialization production and bring good economic benefits to enterprises, and has a wide prospect.

The invention discloses a dyeing and finishing process for a polyester blended fiber fabric. The process comprises the following steps of 1, pretreatment, wherein the polyester blended fiber fabric is sequentially subjected to scouring, bleaching and enzyme washing; 2, mercerizing and sizing, wherein the fabric is subjected to padding of alkali liquor under the room temperature for pre-sizing; 3, dyeing, wherein the fabric is soaked into dye liquor formed by disperse dyes, dyeing is performed under the temperature of 30-40 DEG C, temperature is increased to 90-110 DEG C at the heating rate being 0.8-1 DEG C / min, washing is performed through warm water, infrared ray pre-heating is performed, and then hot-blast air drying is performed; padding is performed again under the room temperature to reduce the suspended solid dye liquor formed by dyes, a reduction solution is subjected to padding, steam reduction and oxidation are performed, washing is performed through warm water, soaping is performed, and then washing and drying are performed; 4, after-treatment, wherein soft and flame-proof treatment is performed in sequence. According to the dyeing and finishing process for the polyester blended fiber fabric, the touch feeling, elasticity and other properties of the fabric are improved remarkably, dyeing is uniform, the color fastness is high, and the color is full.

A mould-proof plant fiber fabric is made from the following raw materials by weight: 7-9 parts of nanometer chitin, 2-3 parts of modified starch PT, 1-1.5 parts of lavender essential oil, 6-8 parts of plastic starch, 2-4 parts of jade power, 75-80 parts of alginate fiber, 70-80 parts of 1-ethyl-3-methyl imidazole acetate, 20-30 parts of 1-ethyl-3-methyl imidazole perchlorate, 6-9 parts of reed fiber, 3-5 parts of menthol crystals, 3-4 parts of huge tail eucalypti leaf, 5-8 parts of bamboo charcoal powder, 9-12 parts of water, and 0.2-0.5 part of spinning auxiliaries. According to the mould-proof plant fiber fabric, the alginate fiber is utilized to re-make cellulose fiber, so that the resource is saved, the performance of the alginate fiber is improved, and the far infrared ray emitting performance of the alginate fiber is reserved; the nanometer chitin modified plastic starch is added to the mould-proof plant fiber fabric, so that the strength of the fiber fabric is enhanced, the hand feeling is improved, and the waterproof property is enhanced; the mint grass, huge tail eucalypti leaf, jade power and bamboo charcoal powder are added to the mould-proof plant fiber fabric, so that the fabric has mould-proof and anti-bacterial properties.

The invention relates to a chemical fiber and a manufacturing method thereof, in particular to a full-dull daiamid 6 fiber added with titanium dioxide and a manufacturing method thereof. The full-dull daiamid 6 fiber and the manufacturing method thereof which have less polymer degradation, even yarn levelness, less filoplume and uniform dyeing aim at solving the disadvantages of easy degradation of high polymer fusant, poor evenness of the yarn levelness, high fluctuation of oiling rate, easy occurrence of more filoplume, bad uniformity of dyeing, etc. The invention mainly has the technical proposal that daiamid 6 particle with more than or equal to 1.6% of TiO2 is taken as raw material, treated by melt spinning and cross air blasting through twice of rectification and oiling, and is wound; finally, the full-dull daiamid 6 fiber is obtained.

The invention relates to a loose fiber dyeing process and belongs to technical field of fiber dyeing. The process sequentially includes: grabbing cotton, forming nets, soaking, mangling, forming rolls, cold piling, unrolling, washing, squeezing, splitting, spreading and drying. Squeezed loose fibers are fed to the spreading procedure after splitting, the loose fibers are squeezed at the squeezing force of 3-15kg / cm<2> under the premise of not damaging the fibers, the squeezed dyed fibers are directly fed through a lower conveying belt to an eight-cage dryer or a loose fiber high-frequency dryer for drying. By the process, the defects that continuous production cannot be performed and machining efficiency is low in conventional technologies are overcome, the defects that of uneven dyeing, low drying efficiency, large energy consumption and the like when the loose fibers are dried in a net structure are overcome, fiber damage is low during processing, and the quality of the finished fibers is guaranteed.

The invention relates to a loose stock dyeing device and belongs to the technical field of stock dyeing devices. The loose stock dyeing device comprises a cotton grabbing device, a net forming device, a steeping device, a mangle device, a coiling device, a cold-batch fixation device, a uncoiling device, a washing device, a squeezing device, a splitting device and a drying device, wherein the cotton grabbing device, the net forming device, the steeping device, the mangle device, the coiling device, the cold-batch fixation device, the uncoiling device, the washing device, the squeezing device, the splitting device and the drying device are sequentially arranged. A loose stock net after squeezing is sent to the splitting device to be split and sent to the drying device to be dried. According to the technical scheme, the defects that continuous production cannot be performed and processing efficiency is low in the prior art are overcome, and the defects that dyeing is uneven, drying efficiency is low and energy consumption is large in drying loose stock with a net-shaped structure are overcome. In the processing process, stock damage is little, and the quality of finished stock products is ensured.

The invention relates to a spray-rolling type loose fiber cold-batch dyeing process, and belongs to the technical field of loose fiber dyeing. The spray-rolling type loose fiber cold-batch dyeing process comprises the steps of spray-rolling type dyeing, coiling and batching fixation, cotton blanket type loose fibers are conveyed to a spray-rolling type dyeing device and horizontally conveyed by a guide belt, after a plurality of groups of spray-rolling dye with alternative squeezing and spraying, the loose fibers are coiled to be loose fiber coils, the loose fiber coils are subjected to the batching fixation at the room temperature for 10-12 hours to complete loose fiber dyeing, the spray-rolling type dyeing process comprises the steps of squeezing, spraying, squeezing, spraying, squeezing, spraying, squeezing, spraying, squeezing and spraying, in the squeezing process, the squeezing force on the loose fibers is 3-15 kg per square centimeters, and in the spraying process, the spraying amount of dyeing liquid is 1.5-2 times the conveying amount of the loose fibers. The spray-rolling type loose fiber cold-batch dyeing process can be used for continuous production, dyeing is even, and cost can be lowered to 1 / 3-1 / 5 of the original cost.

The invention relates nano composite polyester blending high-speed spinning method, comprising the following steps: drying the nano composite antibiosis polyester mother granule, mixing the mother granule and polyester, melting, spinning, cooling, supplying fuel, high-speed stretching, winding and getting the nano composite antibiosis polyester. The invention provides the method of spinning new pattern nano composite antibiosis polyester. The method is simple process flow, low cost, high product quality, good bacteria repellency and long-acting.

The invention discloses a polyester-cotton disperse dye, and a reactive dye one-bath process dyeing method. The reactive dye one-bath process dyeing method comprise following steps: a dyeing solution is prepared at normal temperature; pH value of the dyeing solution is adjusted to 4 to 6; polyester-cotton fabric is immersed; the temperature is increased to 95 to 105 DEG C at a rate of 2 to 3 DEG C / min, and then is increased to 130 to 150 DEG C at a rate of 1 to 2 DEG C / min; suction filtration of the dyeing solution and isolation of disperse dye microcapsules are carried out, and continuous dyeing is carried out for 15 to 25min; the temperature is reduced to 85 to 95 DEG C at a rate of 1.5 to 2.5 DEG C / min; and primary water washing, soaping, afterwashing, and drying are carried out. The dyeing solution comprise, 0.5 to 1.5%owf of a reactive dye, 30 to 40g / L of anhydrous sodium sulfate, 1.5 to 3.5g / L of a pH buffering agent, 0.5 to 5%owf of disperse dye microcapsule, and 0.1 to 3g / L of a dyeing auxiliary. The reactive dye one-bath process dyeing method is simple; period is short; fixation rate is high; and levelling properties are excellent.

The present invention relates to a composition based on a light- and / or heat-stabilized polyamide, comprising at least one stabilizer with at least one hindered amine function. Said invention also relates to yarns, fibres, filaments and / or articles obtained from said composition.

The invention belongs to the technical field of dyeing and finishing, relating to a method for improving the cationized modification evenness of cotton fabrics. The method comprises the following steps: (1) preparing modified solution by utilizing modifier containing reactive groups and cationic groups, placing the cotton fabrics in the modified solution, heating the solution to the temperature of between 85 and 95 DEG C, and preserving the temperature for 20 to 30 minutes; and (2) cooling the mixture system obtained in the step (1) to the temperature of between 30 and 40 DEG C, adding caustic soda in the mixture system to ensure that the concentration of the mixture system in the solution reaches 0.5 to 1g / L, reacting for 20 to 30 minutes, and taking out and washing the cotton fabrics with water. The double-temperature modification process ensures that the cationic modifier is diffused and homogenized in the high-temperature neutral condition, and reacts and combines with the cotton fibers in the low-temperature strong alkali condition, thus reducing modifying unevenness caused by hydrolysis loss and excessive reaction velocity of the modifier in the high-temperature alkali condition, or reducing the problem of poor modifying evenness and penetration of the modifier in the low temperature condition.

The invention relates to a polyester blended fiber, and in particular relates to the polyester blended fiber and a preparation method thereof. The polyester blended fiber is prepared by modified polyester and polyamide through blending and melt spinning, wherein the modified polyester accounts for 60-95% of total quantity of the blended fiber in weight percentage, and the polyamide accounts for 5-40% of total quantity of the blended fiber in weight percentage. The glass-transition temperature of the modified polyester blended fiber is 50-75 DEG C, the dye-uptake rate of acid dyes under normal pressure is 85-99%, the dyeing uniformity is in 4-5 level, the moisture regain is 1.2-2.8% and the volume resistivity is 1.0*10<9>-5.0*10<12> Omega.cm. The polyester blended fiber can be dyed to have dark color by acid dyes at normal temperature and under normal pressure, the fiber and the fabric have soft handfeel and good moisture absorption property, and the problems of poor dyeing uniformity of the modified polyester complex fiber prepared by a combined melt spinning method and color difference of the fabrics are solved.

The invention discloses a polyester-cotton microcapsule disperse reactive dye one-bath dyeing technology. The technology comprises the steps of: S1, polyester dyeing: dipping a to-be-dyed polyester-cotton fabric in a dye solution containing microcapsule disperse dye, conducting heat preservation at 65-75DEG C, then performing heat preservation at 110-130DEG C, and carrying out cooling to 30-40DEG C, using chitosan to serve as the carrier of the disperse dye, and then conducting crosslinking curing; S2. cotton dyeing: adding a quaternary ammonium salt cationic etherifying agent, carrying out stirring reaction, then adding a reactive dye, performing heat preservation at 55-65DEG C, adding an organic solvent, conducting heat preservation at 70-90DEG C, then adding organic amine and sodium carbonate, and performing heat preservation at 60-100DEG C; and S3, aftertreatment: performing cooling to room temperature, and then carrying out primary washing, soaping and after-washing. The polyester-cotton microcapsule disperse reactive dye one-bath dyeing technology provided by the invention has the advantages of simple process, little pollution, wide dye applicability, uniform coloring, high color fixation rate and good level-dyeing properties.

The invention provides a preparation method of a solvent-based dyeable wet polyurethane resin, comprising the following steps: introducing a group into polyurethane molecules to let the reacted polyurethane contain the group; and then establishing chemical bond between the polyurethane resin and dye molecules. The invention mainly aims at the problem that difficulty in coloring polyurethane and low color fastness after coloring in the existing dyeing process of non-figured islands-in-sea microfiber synthetic leather. The invention discloses a synthesis and preparation method of the polyurethane resin with good dyeing performance and obviously improved dyeing color fastness. According to the invention, after dyeing the non-figured islands-in-sea microfiber synthetic leather prepared by using the resin, the color fastness is raised 0.5-1.5 grade as against that of conventional polyurethane, the color is bright, the dyeing uniformity is raised, the dye application amount is reduced, the dyeing technology is simplified, and the invention has high application value and economic value.

The invention relates to a spray coloring stack dying process for cotton woven fabrics, Gray fabrics are dyed by adopting a reactive dye, an accelerating agent and an alkaline agent. The spray coloring stack dying process for cotton woven fabrics is characterized in that pre-processed gray fabrics are wound to two parallel fabric guide rollers, wherein one end of the gray fabrics is wound on the first fabric guide roller, and the other end of the gray fabrics is wound on the second fabric guide roller so that the gray fabrics between the two fabric guide rollers are in a flat condition; and spray heads are arranged on the front or / and the back of the flat gray fabrics opposite to the gray fabrics, and are used for applying a reactive dye water solution, an accelerating agent water solution and an alkaline agent water solution to the gray fabrics. In the process, the cotton woven fabrics and the dyeing solutions are in the ultralow proportion in weight of 1:1 to 1:1.5, the dye, and the accelerating agent and the alkaline agent are applied in a continuous and circular spray mode, and are stacked in a container in a temperature controlled condition so that more than 90% of the dye can be in linking reaction with the cotton fibers sufficiently. The spray coloring stack dying process for cotton woven fabrics has the advantages of high dyeing efficiency, low exhaust, no color differences among the front, middle and back parts as well as the left, middle and right parts, and flat dyed fabrics without color embossing.

The invention discloses a disperse reactive dye one-bath two-step dip dyeing method for polyester cotton fabric. The method comprises the following steps: S1, pretreatment: padding a polyester cotton fabric to be dyed in a finishing liquid, conducting two dipping and two rolling, pre-drying at 60-80 DEG C, baking at 120-140 DEG C, washing with cold water and drying; S2, polyester dyeing: immersing the polyester in a disperse dye, insulating at 65-75 C, and insulating at 110-130 DEG C; S3, cotton dyeing: adding a quaternary ammonium salt cationic etherifying agent, stirring for reaction, adding a reactive dye, insulating at 70-80 DEG C, adding a dyeing auxiliary, insulating, adding soda ash, and insulating at 60-100 DEG C; and S4, posttreatment: conducting an initial washing, soaping and post washing. The disperse reactive dye one-bath two-step dip dyeing method for polyester cotton fabric has the advantages of simple process, easy industrial implementation, wide dye application, uniform coloration, high fixation rate and good levelness.

The invention discloses a disperse dye and reactive dye one-bath dyeing process of polyester cotton, and the disperse dye and reactive dye one-bath dyeing process comprises the following steps: preparing a dye liquor comprising 0.5-2% of a reactive dye, 10-30 g / L of sodium sulfate, 1-3 g / L of a pH buffering agent, 0.5% -5% of disperse dye microcapsules and 0.1% -3 g / L of dyeing aids, adjusting thepH of the dye liquor to 4-6, immersing the polyester cotton according to the bath ratio of 1: 10-30, heating to 80-90 DEG C at a rate of 2-3 DEG C / min, keeping the temperature for 5-15 minutes, thenheating to 130-140 DEG C at a rate of 1.5-2.5 DEG C / min, keeping the temperature for 25-35 minutes, cooling to 70-80 DEG C, and keeping the temperature for 5-15 min. The disperse dye and reactive dyeone-bath dyeing process has high production efficiency, the process flow is short, and dyes are wide in application range, uniform in coloring, high in color fastness and good in leveling property.

The invention relates to an industrial polyester filament for a high-strength ultra-low-elongation safety belt and a production method of the industrial polyester filament. The production method comprises the following steps of: A) high-viscosity polyester chip preparation; B) high-viscosity polyester chip impurity removal; C) melt spinning; and D) drafting, heat setting and winding. The number of the industrial polyester filaments produced by adopting the method is 72-144F, the fineness is 1100-2222dtex, the breaking strength can reach more than 7.80cN / dtex, the fixed-load elongation can reach 4-6 percent under a condition of 11.1KN and the controllable oil content is lower than 0.30-0.60 percent. The industrial polyester filament for the high-strength ultra-low-elongation safety belt and the production method of the industrial polyester filament have the beneficial effects that the breaking strength of the safety belt which is provided by using the obtained industrial polyester filaments can reach 35KN and is much higher than the breaking strength being 28-33KN of the existing safety belt, the physical and mechanical performance is good and the industrial polyester filament is an optimum raw material for producing front-row safety belts; the weaving performance is good, the dyeing uniformity of the safety belt is good due to lower fiber oil content, the gloss is stable, and chromatic aberration and stains do not exist; the waste polyester fibers can be recycled, the energy is saved, the environment is protected and the operating cost is reduced; and the operation is simple to conduct, the process flow is short, the automation level is high and the development space is very great.

The invention relates to polyester DTY fiber and a preparation method thereof. The preparation method comprises: metering a modified polyester melt, extruding, cooling, oiling, winding to prepare polyester POY fiber, and carrying out fiber conduction pipe, network, heating drawing, false twisting, heat setting and winding molding on the polyester POY fiber to obtain the polyester DTY fiber. According to the present invention, during the cooling, the longitudinal height is maintained, and the cross section area of the slow cooling chamber is increased while the plate surface temperature of thespinning plate is maintained by using the thermal insulation method; the material of the polyester POY fiber is the modified polyester with the molecular chain including a terephthalic acid chain segment, an ethylene glycol chain segment and a diol chain segment having the branched chain, the structure formula of the diol chain segment having the branched chain is defined in the specification, R1and R2 are respectively and independently selected from straight chain alkylidene with a carbon atom number of 1-3, R3 is selected from alkyl with a carbon atom number of 1-5, and R4 is selected fromalkyl with a carbon atom number of 2-5; and the preparation method is simple, and the chromatic aberration [delta]E of the prepared fiber is less than 0.200.

The invention provides a sea mud-containing multifunctional polyester fiber and a preparation method thereof. The fiber is prepared from the following raw materials in percentage by weight: 70 to 95 percent of polyester chip, 2 to 18 percent of sea mud powder, 0.3 to 2 percent of a staphylea bumalda seed extract, 1 to 3.5 percent of a Blumea aromatica (Wall. )DC. extract, 1.6 to 5 percent of a flemingia philippinensis extract and 0.1 to 1.5 percent of a coupling agent. All the raw materials are treated and blended in various ways and then are conveyed into melt spinning equipment by a conventional melt spinning method for blend spinning, so that the sea mud-containing multifunctional polyester fiber is obtained; the sea mud-containing multifunctional polyester fiber is strong in fragrance and high in skin friendliness, has functions of resisting bacteria, removing odor, preventing ultraviolet rays, killing acarus, expelling mosquitoes, protecting the skin and the health, is good in effect, can work for a long time, shows higher spinnability, hygroscopicity, breathability, dyeing uniformity and mechanical property, is excellent in serviceability, and can be widely applied. Therefore, sea mud resources are fully used, and the sea mud-containing multifunctional polyester fiber has extremely high economic value and environmental protection value.

The invention discloses a dyeing process of a micro-denier acrylic fiber wool top. The dyeing process comprises the following steps: (1) adding 0.6 part by mass of sodium persulfate, 1.3 parts by mass of tristyrylphenol polyoxyethylene ether sulfonated ammonium, 2.1 parts by mass of dibutyl phthalate, 1.8 parts by mass of garden balsam extract, 9 parts by mass of natural plant pigment, 22 parts by mass of water, 0.7 parts by mass of sodium pyrophosphate and 2.4 parts by mass of cocoanut fatty acid diethanolamide and stirring the raw materials evenly; (2) soaking the wool top to a dye vat for 50 minutes; (3) drying the soaked wool top at 75 DEG C; (4) immersing the dried wool top into clean water and rinsing for 5 minutes; and (5) taking out the rinsed wool top and naturally airing. According to the dyeing process of the micro-denier acrylic fiber wool top, the color fastness of the dyed wool top is high; the dyeing uniformity is good; and dyeing defect is avoided.

The invention discloses a dyeing technology of antistatic wool tops. The dyeing technology comprises the following steps: 1) adding the following materials into a dye vat in parts by weight: 3.1 parts of ethylene glycol monobutyl ether, 1.2 parts of dodecyl dimethyl betaine, 2.3 parts of hexamethoxy methyl melamine, 28 parts of water, 4.5 parts of butyl methacrylate, 10 parts of natural plant pigment, 1.6 parts of hydroxypropyl methyl cellulose, and 1.4 parts of polyoxyethylene sorbitan fatty acid ester, and uniformly stirring; 2) soaking the wool tops in the dye vat for 50 min; 3) drying the soaked wool tops at the temperature of 65 DEG C; 4) soaking the dried wool tops in clean water for rinsing for 25 min; 5) taking out the rinsed wool tops, and naturally airing. According to the dyeing technology of antistatic wool tops, the color fastness of the dyed wool tops is high, the dyeing uniformity is good, and the dyeing defect is avoided.