CN113215702B - Composite spinning process of cotton nitrile yarn - Google Patents
Composite spinning process of cotton nitrile yarn Download PDFInfo
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- CN113215702B CN113215702B CN202110695527.0A CN202110695527A CN113215702B CN 113215702 B CN113215702 B CN 113215702B CN 202110695527 A CN202110695527 A CN 202110695527A CN 113215702 B CN113215702 B CN 113215702B
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- 229920000742 Cotton Polymers 0.000 title claims abstract description 61
- 150000002825 nitriles Chemical class 0.000 title claims abstract description 30
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 238000009987 spinning Methods 0.000 title claims abstract description 14
- 239000000835 fiber Substances 0.000 claims abstract description 124
- 239000000975 dye Substances 0.000 claims abstract description 65
- 238000000034 method Methods 0.000 claims abstract description 44
- 230000000694 effects Effects 0.000 claims abstract description 43
- 239000000988 sulfur dye Substances 0.000 claims abstract description 41
- 125000002091 cationic group Chemical group 0.000 claims abstract description 35
- 238000005406 washing Methods 0.000 claims abstract description 34
- 229920002972 Acrylic fiber Polymers 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 238000004043 dyeing Methods 0.000 claims description 73
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 26
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 6
- 229910052717 sulfur Inorganic materials 0.000 claims description 5
- 239000011593 sulfur Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 244000025254 Cannabis sativa Species 0.000 claims description 3
- 235000015067 sauces Nutrition 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 6
- 239000004744 fabric Substances 0.000 description 23
- 239000005864 Sulphur Substances 0.000 description 15
- 239000000047 product Substances 0.000 description 8
- 150000001768 cations Chemical class 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 5
- 238000005562 fading Methods 0.000 description 5
- 229940097275 indigo Drugs 0.000 description 5
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 5
- 238000004073 vulcanization Methods 0.000 description 4
- 230000002087 whitening effect Effects 0.000 description 4
- 239000003086 colorant Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 238000007378 ring spinning Methods 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- PGYZAKRTYUHXRA-UHFFFAOYSA-N 2,10-dinitro-12h-[1,4]benzothiazino[3,2-b]phenothiazin-3-one Chemical compound S1C2=CC(=O)C([N+]([O-])=O)=CC2=NC2=C1C=C1SC3=CC=C([N+](=O)[O-])C=C3NC1=C2 PGYZAKRTYUHXRA-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- SJEYSFABYSGQBG-UHFFFAOYSA-M Patent blue Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C(=CC(=CC=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1 SJEYSFABYSGQBG-UHFFFAOYSA-M 0.000 description 1
- 239000000980 acid dye Substances 0.000 description 1
- 238000010042 air jet spinning Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000007383 open-end spinning Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000007382 vortex spinning Methods 0.000 description 1
- 238000009976 warp beam dyeing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/34—Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns
- D02G3/346—Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns with coloured effects, i.e. by differential dyeing process
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/24—Polyamides; Polyurethanes
- D06P3/241—Polyamides; Polyurethanes using acid dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/34—Material containing ester groups
- D06P3/52—Polyesters
- D06P3/54—Polyesters using dispersed dyestuffs
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
- D06P3/6025—Natural or regenerated cellulose using vat or sulfur dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
- D06P3/62—Natural or regenerated cellulose using direct dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
- D06P3/66—Natural or regenerated cellulose using reactive dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/70—Material containing nitrile groups
- D06P3/76—Material containing nitrile groups using basic dyes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
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- Woven Fabrics (AREA)
- Artificial Filaments (AREA)
Abstract
The application provides a composite spinning process of cotton nitrile yarns, and belongs to the technical field of products which are mainly characterized by adopting special yarn raw materials. The method is characterized in that cotton fibers and acrylic fibers are used as raw materials, the cotton fibers are dyed by sulfur dyes to form a loose fiber I, the acrylic fibers are dyed by cationic dyes to form a loose fiber II different from the loose fiber in color fastness and brightness, and the loose fiber I and the loose fiber II are blended in proportion to form the cotton nitrile yarn. Be applied to yarn processing with this application, have and wash old effect, and can realize washing more bright-colored special effect and present, have advantages such as can not pollute workshop environment and equipment.
Description
Technical Field
The application relates to a composite spinning process of cotton nitrile yarns, belonging to the technical field of products which are mainly characterized by adopting special yarn raw materials.
Background
Taking the denim which is applied more generally as an example, the denim is high in durability and universality, and in the processing and development process of the denim fabric, the denim fabric is divided into two stages in general:
in the first period: the fabric is woven after the warp yarns are dyed by a sizing and dyeing combined machine by using sulfur dyes, and finally, the clothes product with the jeans washing effect is manufactured in the modes of water washing, stone grinding and the like.
In the second stage: the method comprises the steps of dyeing yarns by using a sulfur dye through a ball warp beam dyeing machine to prepare a fabric or a product, and finally preparing the product with the jean washing effect through methods such as water washing, stone grinding and the like.
However, the above methods have limitations on dyeing raw materials, and the products are single; the use of dyes such as indigo can be seriously retained in the surrounding environment in the dyeing and weaving process, and when the denim is dyed in the workshop, other fabrics can be dyed only if a large amount of cleaning work cannot be carried out or needs to be carried out; based on the demand of market for product diversity, in order to obtain clothes in nostalgic or retro style, the dyed jean fabric is mostly fixed on the surface of the fiber, so that the exterior of the fiber is colored, the inner side of the fiber is always white, the color fastness is low/poor, natural fading is formed in the washing process to form an antique effect, and the antique effect is achieved, but the process and the antique degree are uncontrollable.
Disclosure of Invention
In view of the above, the application provides a composite spinning process for cotton nitrile yarns, which not only introduces various yarns to realize composite blending, but also meets the requirements of old-fashioned yarns and color fastness.
Specifically, the method is realized through the following scheme:
a composite spinning process of cotton nitrile yarn is characterized in that cotton fiber and acrylic fiber are adopted, the cotton fiber is dyed by sulfur dye to form a first loose fiber, the acrylic fiber is dyed by cationic dye to form a second loose fiber which has color fastness and brightness different from those of the first loose fiber, and the first loose fiber and the second loose fiber are blended in proportion to form the cotton nitrile yarn.
The cotton nitrile yarn takes cotton fibers and acrylic fibers as raw materials, two yarn components with different color fastness and vividness, namely a loose fiber I and a loose fiber II, are respectively formed by adopting different dyeing modes, wherein the loose fiber I is formed by dyeing the cotton fibers with sulfur dyes, and the color fastness is relatively poor; the second loose fiber is formed by dyeing acrylic fiber with cationic dye, has high color fastness and fastness, and can be blended with the first loose fiber and the second loose fiber according to a set proportion to form a brand-new cotton acrylic yarn.
In the cotton nitrile yarn, the sulfur dye is impregnated into the cotton fiber, the cationic dye is impregnated into the acrylic fiber, and the two yarn raw materials show the result of dyeing both inside and outside; the dyeing of the sulfur dye forms a darker color of cotton fiber, other dyeings are easy to suppress, the color fastness is not bright, the reflection of the old washing vintage effect can be given, the acrylic fiber dyed by the cationic dye is good in color fastness and high in brightness (such as denim blue), the color fastness and the brightness are matched, the contrast is obvious, the integral color fastness of the yarn can be compensated, after the acrylic fiber is washed, the sulfur part fades with water, the color and the brightness of the cationic dye are not suppressed, the cationic dyeing effect is highlighted, most of the finally left cationic dye is the black yarn when the two parts of the yarn are black, the white washing effect is achieved at the moment, and when the two parts of the yarn have colors except the black color, the colored yarn is the colored yarn, and the more washing and more bright effects are achieved. The washing degree is different, and the washing effect is different, and is considerable relatively based on the colour fastness, through the control of washing degree, realizes the controllability of washing effect.
Further, it is preferable that:
the mass ratio of the first loose fibers to the second loose fibers is 35-50. The proportion of the first loose fiber and the second loose fiber not only meets the physical properties of strong stretching and the like, but also meets the requirements on appearance and color fastness. Although the process can be obtained through a large number of experiments, the workload is obviously very large by considering the influence of other factors, and in the case of selecting the mixture ratio, firstly, the influence of different mixture ratios on the effect of washing old and washing more bright is considered, and the requirement on the dyeing effect mainly comes from two aspects of the matching of different dyeing methods and the matching of the dyeing method and the plant fiber, and is embodied as the proportion problem of the dyeing part of the sulfur dye and the dyeing part of the cation dye, and on the basis, the effect on the physical performance is further considered, so that the effect is better when the mixture ratio of the loose fiber I (cotton fiber dyed by the sulfur dye) and the loose fiber II (acrylic fiber dyed by the cation dye) is controlled to be 35-50-65.
In the dyeing process, the core control parameters are dye concentration, dye liquor pH, treatment temperature and time length, and the applicant controls the dyeing parameters on the basis of selected raw materials so as to meet the requirements on dyeing effect and mechanical performance. Thus, the core parameters for dyeing with cationic dyes and with sulphur dyes are controlled as follows:
the sulfur dye dyeing process comprises the following steps: the usage amount of the sulfur dye is 12-25%, the pH value of the dye solution is 10-13, and the dyeing treatment is carried out for 50-80min at the temperature of 90-120 ℃. Preferably, the sulfur dye dyeing process comprises the following steps: the usage amount of the sulfur dye is 15-21%, the pH value of the dye solution is 11-12.5, and the dyeing treatment is carried out for 55-65min at the temperature of 100-105 ℃. The sulfur dye is any one of sulphur dark blue 3R, sulphur Baolan CV, sulphur red brown B3R, sulphur ash, sulphur yellow brown 5G, sulphur red LGF, sulphur dark green 511, sulphur bright green 7713, sulphur dark brown GD, sulphur grass green 715, sulphur black BR, sulphur blue BRN, sulphur red sauce 3B or sulphur red GGF.
The cationic dye dyeing process comprises the following steps: the dosage of the cationic dye is 0.04-2.0%, the pH of the dye solution is 3-6, and the treatment is carried out for 30-80min at the temperature of 90-145 ℃. Preferably, the cationic dye is a composite dye, the pH value of the dye solution is 4-5, and the treatment is carried out at 100-130 ℃ for 30-50min.
In the above scheme, the following method can be adopted for further improvement: the cotton acrylic yarn is formed by blending a loose fiber I, a loose fiber II and a loose fiber III, the mass ratio of the loose fiber I, the loose fiber II and the loose fiber III is 30-50-25-40, the cotton fiber is dyed by a sulfur dye to form the loose fiber I, the acrylic fiber is dyed by a cationic dye to form the loose fiber II with different color fastness and vividness from the loose fiber II, and the loose fiber III is formed by the natural cotton fiber. More preferably, the mass ratio of the loose fiber I, the loose fiber II and the loose fiber III is 45. The cationic dye dyeing process comprises the following steps: the cationic dye is a composite dye, the dosage is 0.04-2.0%, the pH of the dye solution is 4-5, and the treatment is carried out for 30-50min at 100-130 ℃; a sulfur dye dyeing process: the usage amount of the sulfur dye is 16-20%, the pH value of the dye solution is 11-13, and the dyeing treatment is carried out for 50-65min at the temperature of 90-110 ℃. The disperse fiber dyed by the cation has high color fastness, can supplement the color fastness of the second disperse fiber, and the disperse fiber of the natural cotton fiber is mixed without dyeing, so that the production cost is reduced; the loose fiber dyed by the sulfur dye can be partially faded in water washing treatment, but the fading is limited in the whitening process, and a pollution-free processing process can be realized, so that the yarn forming effect is better.
The processing process of the application is divided into two parts: firstly, dyeing loose fibers: the cotton fiber and the acrylic fiber are respectively matched with different dyeing methods to form two (or three) yarn forming raw materials with high color fastness and poor color fastness, and a foundation is provided for different fibers to present different effects in the subsequent washing and whitening processes; secondly, forming yarns: the yarn forming raw materials form cotton nitrile yarns according to different proportions, the cotton nitrile yarns are woven into fabrics, and parts of the fabrics dyed by the sulfur dyes are dark in color, have no brightness and have an old washing effect; the part dyed by the cationic dye has good color fastness and high color vividness, and the color fastness of the whole fabric is improved by matching the part dyed by the cationic dye and the part; when parts such as vulcanization and the like are faded along with washing, most of the remained parts are cationic dyes, so that the fabric has the effect of being more bright-colored when being washed, the contrast is obvious, and different fabric effects can be formed by different grinding degrees, washing degrees and different yarn ratios.
The cotton fiber is dyed by the sulfur dye, the dry friction coefficient of the formed loose fiber is higher, partial fading can occur in the washing treatment, but the fading is limited in the whitening process, and the pollution-free processing process can be realized, so the spinning effect is better.
After the acrylic fiber is dyed by the cationic dye, the formed loose fiber has high color fastness, is not easy to fade in subsequent washing and whitening, and can be matched with the loose fiber to realize the improvement of the integral color fastness of the yarn.
In order to increase the product type and reduce the production cost, the cotton nitrile yarn can also comprise a third loose fiber, the third loose fiber also takes the cotton fiber as a raw material, the third loose fiber is used as a natural color fiber to be directly formed into yarn together with the first loose fiber and the second loose fiber without a dyeing step, and the first loose fiber, the second loose fiber and the third loose fiber are woven into the denim fabric with various color fastness.
The conventional denim fabric processing process generally adopts a multi-dye mixed dyeing mode, namely yarns or fabrics are subjected to indigo or sulfur dyeing, then are subjected to over dyeing by cationic dye and the like, and then are spun, the effect of the mode before water washing is good, but the more the indigo or sulfur dyeing color is washed, the lighter the indigo or sulfur dyeing color is, the whole denim fabric is in an old grey state along with the increase of the water washing times; in the scheme, the raw material fiber is divided into two parts (when the natural color fiber exists, the raw material fiber is divided into three parts, the third part does not perform a dyeing process), one part of the fiber (cotton fiber) is dyed by cation/sulfur dye, the other part of the fiber (such as acrylic fiber) is dyed by sulfur/cation dye, the formed two (or three) raw materials form yarn, the formed finished product cotton nitrile yarn part has an old washing effect, the color fastness of the part is high, and the integral color fastness is improved; the colour that the dyeing of sulphur dye formed is dark, does not have the vividness, and the colour fastness that the dyeing of cationic dye formed is good, the vividness is high, and both cooperations, the contrast are obvious, and the part fades along with the washing when vulcanizing, and the most that finally leave is cationic dye, and the surface fabric is and washes more bright-colored effect.
Drawings
FIG. 1 is an appearance view of a fabric woven with the yarns of the present application.
Detailed Description
The flow of this example is summarized as follows:
dyeing cotton fibers by using a sulfur dye to form a loose fiber I;
dyeing the acrylic fibers by using a cationic dye to form a second loose fiber;
and blending the loose fiber I and the loose fiber II into cotton polyester dyed yarns.
Wherein, the parameters influencing the effect of the cotton nitrile yarn are divided into the following parts:
(1) The raw materials are mixed.
(2) Influence of dyeing process conditions: (1) different influences of the dyeing process on cotton fibers and acrylic fibers; (2) the effect of different dyeing processes on the finished yarn. Here, the raw materials are combined for comprehensive evaluation.
(3) Selection of yarn forming mode: ring spinning, rotor spinning, air jet spinning and vortex compact spinning.
The following combination cases were analyzed for specific parameters.
Example 1: effect of raw Material composition on Cotton nitrile yarn Properties
In this example, cotton nitrile yarn is divided into two forms:
(1) The loose fibers I and the loose fibers II;
(2) The first loose fiber, the second loose fiber and the third loose fiber.
In the application, the loose fibers are cotton fibers dyed by sulfur dyes, the loose fibers are acrylic fibers dyed by cationic dyes, the loose fibers are cotton fibers in original colors, and the influence of the mixture ratio is compared and analyzed below.
1. The process flow comprises the following steps: the cotton fiber is dyed by sulfur dye to form a first loose fiber, the acrylic fiber is dyed by disperse composite dye to form a second loose fiber, and the first loose fiber and the second loose fiber are spun tightly by vortex to obtain the cotton nitrile yarn.
2. Description of the parameters
(1) 1, loose fiber I: vulcanized black BR 16% (o.w.f), pH 12, 102 ℃,55min; and (5) dyeing black.
(2) And (2) loose fibers: blue X-BL0.0145+ red X-6B0.0275, pH4, 100 ℃,30min; and dyeing purple.
(3) The ring spinning process conditions are as follows: the low-speed vortex spinning is adopted, the speed is controlled at 350m/min, the feeding ratio is 0.97, so that cohesive force is reduced, the glittering effect is increased, and the drafting in the rear zone is properly reduced, so that accidental drafting is controlled.
(4) The proportion of the loose fibers I and the loose fibers II is as follows: the ratio of the first loose fiber to the second loose fiber (mass ratio of the first loose fiber to the second loose fiber) was measured by using, as a representative, 10.
The experimental structure shows that: the characteristics based on different components are more obvious, such as higher fiber color fastness and bright color after cationic dye dyeing, the yarn is suitable for being used as bright yarn and finished cloth, and the effects of fading, old color making, white grinding (which is the requirement of denim yarn on color) and the like are not ideal enough; the color of the sulfur dye is dark, and the color is not bright; the control of the ratio must therefore be very critical, ensuring that both achieve compatibility in appearance and compatibility in physical properties. When the mass ratio of the first loose fiber to the second loose fiber is 30-65-70, the cooperation effect of the first loose fiber and the second loose fiber is better, and particularly when the mass ratio of the first loose fiber to the second loose fiber is 40. The color fastness of the cloth woven by the cotton nitrile yarn is more than level 4, the effects of pocking marks, old washing and the like can be realized on the surface, in the using washing process, when parts such as vulcanization and the like are faded along with washing, most of dyes such as cations and the like are finally left, the contrast is obvious, the fabric has the effect of being more bright and more colorful when being washed, the effect of the vulcanization part is exerted, and the defect of dark color is overcome.
The yarn formed by the application has the effects of dyeing and penetrating through the inside and the outside, while the conventional indigo dyeing only realizes the outer layer dyeing, and the inner core is in a white core state.
Further experiments were carried out on the three-color construction of cotton-polyester series, the ratios (mass ratio) of bulk fiber one, bulk fiber two, 20. A similar trend to dichroism appeared: the mass ratio of the first loose fiber, the second loose fiber and the third loose fiber is 30-50, and the ratio is preferably 45.
Example 2: effect of different dyeing Processes on Cotton-nitrile yarn Properties
Taking the scheme of the loose fiber I and the loose fiber II as an example,
the loose fiber is formed by dyeing cotton fiber with sulfur dye, the loose fiber is formed by dyeing acrylic fiber with cationic dye, the two loose fibers are blended into yarn, and the finished yarn is spun by ring spinning.
The cationic dye adopts composite dye, and the dyeing process of the cationic dye can adopt the following steps: (1) Blue X-BL0.0145+ red X-6B0.0275, pH4, 100 ℃,30min; (2) Blue X-BL 1.23+ red X-GRL0.61, pH4.6, 130 ℃,50min.
The dyeing process of the sulfur dye comprises the following steps: the concentration of the sulfur dye is 10-30% (such as 10%, 12%, 16%, 18%, 20%, 22%, 25%, 30%), the pH of the dye solution is 10-13 (such as 10, 11, 11.5, 12, 12.5, 13), the dyeing treatment is carried out for 50-80min (such as 50min, 55min, 60min, 65min, 70min, 80 min) at 90-120 ℃ (such as 85 ℃,90 ℃, 95 ℃, 100 ℃, 102 ℃, 105 ℃, 110 ℃, 120 ℃), the consumption of the sulfur dye is determined to be 16-20% (owf), the pH of the dye solution is 11-12.5, and the dyeing treatment is carried out for 55-65min at 95-105 ℃.
Wherein the sulfur dye can be selected from any one of commercially available deep blue sulfide 3R, baolan sulfide CV, red brown sulfide B3R, sulfide ash, yellow brown sulfide 5G, red LGF sulfide, dark green sulfide 511, bright green sulfide 7713, dark brown sulfide GD, grass green sulfide 715, black BR sulfide, blue BRN sulfide, red sauce sulfide 3B or red GGF sulfide.
The dyed yarns were subjected to a color fastness test, and the results are shown in table 1.
TABLE 1 color fastness of cotton-acrylic yarns under different dyeing processes
The color fastness of the cloth formed by the yarn is more than 4 grades, the dyeing rates of fibers formed by dyeing different dyes by cotton and nitrile are different, pockmarks (pockmarks are formed at all positions such as dark colors) can exist on the surface of the final cotton nitrile yarn obtained by adopting the method, after weaving is carried out, the effects of returning to the ancient style, washing old style and the like shown in figure 1 can be realized, in the washing process, parts such as vulcanization and the like are faded along with washing, most of the finally remained acid dyes are obvious in contrast, and the fabric has the effect of being more bright-colored when being washed.
Compared with the conventional dyeing (cotton fiber and cotton polyester fiber) mode, the scheme avoids the use of a large amount of sulfur dyes which are easy to discolor, not only solves the biggest problem of waste water in the printing and dyeing field, but also realizes the special effect that the final fabric is more bright when being washed more, while keeping the special effects of the sulfur dyes in the fields of jean yarns and the like through the matching of different fibers and different dyeing methods and the matching property among the dyed fibers.
Claims (6)
1. A composite spinning process of cotton nitrile yarns is characterized by comprising the following steps: the dyeing process is characterized in that cotton fibers and acrylic fibers are used as raw materials, the cotton fibers are dyed by a sulfur dye to form a loose fiber I, the acrylic fibers are dyed by a cationic dye to form a loose fiber II with different color fastness and brightness, the loose fiber I and the loose fiber II are blended according to the mass ratio of 35-50-65 to form cotton nitrile yarns, the cotton nitrile yarns are divided into black yarns and color yarns according to the difference of color composition, the color yarns have the more washing and bright effect, the black yarns have the white washing effect, and the sulfur dye dyeing process comprises the following steps: the usage amount of the sulfur dye is 12-25%, the pH value of the dye solution is 10-13, the dyeing treatment is carried out for 50-80min at the temperature of 90-120 ℃, and the cationic dye dyeing process is as follows: the dosage of the cationic dye is 0.04-2.0%, the pH of the dye solution is 3-6, and the treatment is carried out for 30-80min at the temperature of 90-145 ℃.
2. The composite spinning process of cotton nitrile yarn according to claim 1, wherein the sulfur dye dyeing process comprises the following steps: the usage amount of the sulfur dye is 15-21%, the pH value of the dye solution is 11-12.5, and the dyeing treatment is carried out for 55-65min at the temperature of 100-105 ℃.
3. The composite spinning process of cotton nitrile yarn according to claim 1, wherein the sulfur dye is any one of dark blue sulfide 3R, baolan sulfide CV, red brown sulfide B3R, vulcanized ash, yellow brown sulfide 5G, red sulfur LGF, dark green sulfide 511, bright green sulfide 7713, dark brown sulfide GD, grass green sulfide 715, black BR sulfide, blue BRN sulfide, red sauce sulfide 3B or red GGF sulfide.
4. The composite spinning process of cotton nitrile yarns according to claim 1, characterized in that: the cationic dye is a composite dye, the pH value of the dye solution is 4-5, and the treatment is carried out for 30-50min at the temperature of 100-130 ℃.
5. A composite spinning process of cotton nitrile yarns is characterized by comprising the following steps: the cotton nitrile yarn is formed by blending a loose fiber I, a loose fiber II and a loose fiber III, the mass ratio of the loose fiber I, the loose fiber II and the loose fiber III is 30-50-10-30, the cotton fiber is dyed by a sulfur dye to form the loose fiber I, the acrylic fiber is dyed by a cationic dye to form the loose fiber II with different color fastness and vividness from the loose fiber II, and the loose fiber III is a natural cotton fiber, and the cationic dye dyeing process is as follows: the cationic dye is a composite dye, the dosage is 0.04-2.0%, the pH of the dye solution is 4-5, and the treatment is carried out for 30-50min at 100-130 ℃; a sulfur dye dyeing process: the usage amount of the sulfur dye is 16-20%, the pH value of the dye solution is 11-13, and the dyeing treatment is carried out for 50-65min at the temperature of 90-110 ℃.
6. The composite spinning process of cotton nitrile yarns according to claim 5, characterized in that: the mass ratio of the first loose fiber, the second loose fiber and the third loose fiber is 45.
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Denomination of invention: A Composite Spinning Process for Cotton Nitrile Yarn Effective date of registration: 20231202 Granted publication date: 20221220 Pledgee: Zhejiang Shaoxing Hengxin Rural Commercial Bank Co.,Ltd. Mashan sub branch Pledgor: SHAOXING GUOZHOU TEXTILE NEW MATERIALS CO.,LTD. Registration number: Y2023980068977 |
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