CN114517419A - Method for pure spinning of kapok fiber dyed by plant turmeric - Google Patents
Method for pure spinning of kapok fiber dyed by plant turmeric Download PDFInfo
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- CN114517419A CN114517419A CN202210230580.8A CN202210230580A CN114517419A CN 114517419 A CN114517419 A CN 114517419A CN 202210230580 A CN202210230580 A CN 202210230580A CN 114517419 A CN114517419 A CN 114517419A
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- 239000000835 fiber Substances 0.000 title claims abstract description 196
- 244000146553 Ceiba pentandra Species 0.000 title claims abstract description 175
- 235000003301 Ceiba pentandra Nutrition 0.000 title claims abstract description 175
- 244000163122 Curcuma domestica Species 0.000 title claims abstract description 52
- 235000003392 Curcuma domestica Nutrition 0.000 title claims abstract description 52
- 235000003373 curcuma longa Nutrition 0.000 title claims abstract description 52
- 235000013976 turmeric Nutrition 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000009987 spinning Methods 0.000 title claims abstract description 36
- 241000196324 Embryophyta Species 0.000 title claims abstract description 27
- 238000004043 dyeing Methods 0.000 claims abstract description 51
- 229920002978 Vinylon Polymers 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000243 solution Substances 0.000 claims abstract description 31
- 238000005406 washing Methods 0.000 claims abstract description 29
- 238000001035 drying Methods 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 19
- 238000004108 freeze drying Methods 0.000 claims abstract description 12
- 239000002253 acid Substances 0.000 claims abstract description 8
- 238000002791 soaking Methods 0.000 claims abstract description 8
- 230000007935 neutral effect Effects 0.000 claims abstract description 7
- 239000012670 alkaline solution Substances 0.000 claims abstract description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 64
- 229960000583 acetic acid Drugs 0.000 claims description 24
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 8
- 239000012362 glacial acetic acid Substances 0.000 claims description 8
- 238000004321 preservation Methods 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 238000005554 pickling Methods 0.000 claims description 2
- 235000013311 vegetables Nutrition 0.000 claims 2
- 239000003929 acidic solution Substances 0.000 claims 1
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 239000000975 dye Substances 0.000 description 68
- 230000000052 comparative effect Effects 0.000 description 8
- 238000007378 ring spinning Methods 0.000 description 7
- 238000005303 weighing Methods 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 6
- 238000004804 winding Methods 0.000 description 6
- 235000011121 sodium hydroxide Nutrition 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000009970 yarn dyeing Methods 0.000 description 3
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
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- 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
-
- 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
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
-
- 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
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/34—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using natural dyestuffs
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/06—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated alcohols, e.g. polyvinyl alcohol, or of their acetals or ketals
-
- 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)
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Abstract
The invention discloses a method for pure spinning kapok fiber dyed by plant turmeric, which comprises the following steps: (1) soaking the kapok fiber in an alkaline solution at normal temperature for 0.5-2 hours, and then washing the kapok fiber with an acid solution to be neutral; (2) freeze-drying the pretreated kapok fiber to remove water; (3) blending the dried kapok fiber and the water-soluble vinylon fiber to obtain blended yarn of the kapok fiber and the water-soluble vinylon fiber; (4) placing the blended yarn of the kapok fiber and the water-soluble vinylon fiber in a dye vat, then adding a turmeric dye for dyeing, dehydrating and drying after dyeing is finished, and obtaining the pure kapok fiber spun yarn. According to the method, through the synergistic effect of the pretreatment, the drying treatment and the dyeing treatment of the kapok fiber, the dye enters the interior of the kapok fiber, so that the color fastness is improved; meanwhile, the method of concomitantly spinning the water-soluble fiber and the kapok fiber into yarn is adopted, the kapok fiber is spun into yarn, and the water-soluble fiber is removed in the subsequent dyeing process, so that the pure kapok fiber spinning yarn is obtained.
Description
Technical Field
The invention relates to the technical field of spinning, in particular to a method for pure spinning kapok fiber dyed by plant turmeric.
Background
Kapok fiber is a plant fiber with excellent performance, is the finest, lightest, highest hollowness and warmest fiber material in natural ecological fiber, has the fineness of only 1/2 of cotton fiber, but has the hollow rate of more than 86 percent, which is 2-3 times of common cotton fiber, but has smooth fiber surface, large rigidity, short fiber length, poor spinnability and difficult pure spinning production, therefore, the kapok fiber is usually blended with cotton, viscose or other cellulose fibers at present, but the original excellent characteristics of the kapok fiber can be reduced to a certain extent after blending. In addition, plant dyeing is gradually adopted in the current kapok fiber or other fiber spinning dyeing, which is trusted by consumers, but the color fastness of a turmeric dyeing product in plant dyeing is low, so that the development of a kapok fiber pure spinning product dyed by plant turmeric is extremely limited. The invention researches a method for spinning kapok fiber by dyeing plant turmeric to solve the problems that the kapok fiber is difficult to spin pure yarn and the turmeric has low dyeing color fastness and the like.
Disclosure of Invention
The invention aims to provide a method for spinning kapok fiber pure yarn by dyeing plant turmeric, which aims to solve the problems that the kapok fiber is difficult to spin the pure yarn, the turmeric has low dyeing color fastness and the like.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for spinning kapok fiber by dyeing plant turmeric comprises the following steps:
(1) kapok fiber pretreatment
Soaking the kapok fiber in an alkaline solution at normal temperature for 0.5-2 hours, and then washing the kapok fiber with an acid solution to be neutral;
(2) drying treatment
Freeze-drying the kapok fiber pretreated in the step (1) to remove water;
(3) blended yarn
Blending the kapok fiber dried in the step (2) with the water-soluble vinylon fiber to obtain blended yarn of the kapok fiber and the water-soluble vinylon fiber;
(4) dyeing process
And (4) placing the blended yarn of the kapok fiber and the water-soluble vinylon fiber prepared in the step (3) in a dye vat, then adding a turmeric dye for dyeing, and dehydrating and drying after dyeing to obtain the pure kapok fiber yarn. Further, the alkaline solution in the step (1) is a NaOH solution, and the concentration is 3-10 g/L; the acid solution is an acetic acid solution, and the solubility is 3-10 g/L.
Further, the freeze-drying temperature in the step (2) is-10 to-100 ℃, and the freeze-drying time is 12 to 24 hours.
Further, the blending ratio of the kapok fiber to the water-soluble vinylon in the step (3) is 1: 0.2-1, and preferably 1: 0.5-1.
Further, the dyeing process in the step (4) specifically comprises the following steps:
(4-1) adding sufficient normal-temperature water into a dye vat, and adding glacial acetic acid and citric acid to adjust the pH value to 4-5;
(4-2) putting the kapok fiber and water-soluble vinylon blended yarn prepared in the step (3) into a dye vat and running for 3-5 min to enable the blended yarn to be completely soaked in the aqueous solution;
(4-3) adding a turmeric dye into the dye vat, running for 5-15 min at room temperature, then heating to 90-95 ℃ at the speed of 0.5-3 ℃/min, and keeping the temperature for 45-60 min;
(4-4) after the heat preservation is finished, quickly discharging the dye liquor, immediately adding cold water with the temperature of 0-10 ℃ into a dye vat to wash for 1-3 times, preferably for 5-10 ℃, then carrying out acid washing for 2-3 times, then washing for 2-3 times with normal-temperature water, and then dehydrating and drying to obtain the kapok fiber pure spinning yarn. In the technical scheme, cold water is added immediately after dyeing is finished for cooling, so that the cavity of the kapok fiber is collapsed, the dye entering the cavity of the kapok fiber can be fixed inside the cavity of the kapok fiber, the dyeing color fastness is improved, but the cold water cooling temperature also needs to be controlled, if the temperature is too low, the collapse of the cavity of the kapok fiber is more severe, and the high hollowness characteristic of the kapok fiber is influenced. The cold water temperature is preferably 5-10 ℃, so that the cavity part of the kapok fiber can be collapsed, the dyeing color fastness is improved, and meanwhile, the cooling temperature only slightly reduces the hollowness, so that the kapok fiber retains the characteristic of high hollowness.
Further, the bath ratio in the step (4-1) is 1: 10-15.
Further, the mass of the turmeric dye added in the step (4-3) accounts for 0.1-3% of the dry mass of the kapok fiber.
Further, an acetic acid solution is adopted during acid washing in the step (4-4), and the concentration of the acetic acid solution is 0.3-0.8 g/L.
The technical scheme provided by the invention mainly solves the problems that kapok fiber is difficult to spin pure yarn and turmeric has low color fastness.
In order to solve the problem that the kapok fiber is difficult to spin pure spun yarn, the invention adopts the water-soluble vinylon fiber to accompany the spinning yarn, so that the kapok fiber becomes the yarn, and then the water-soluble vinylon fiber is removed in the subsequent dyeing process, so that the kapok fiber pure spun yarn can be obtained.
In order to solve the problem of low color fastness of plant turmeric dyeing, firstly, alkaline solution is adopted to soak kapok fiber in a pretreatment stage to swell the kapok fiber, so that on one hand, a wax layer on the surface of the kapok fiber can be removed, the dyeing effect is improved, and on the other hand, the kapok fiber can be swelled, so that the central cavity of the kapok fiber is enlarged, and dye solution can easily enter the fiber cavity; then, freeze drying is adopted to remove moisture of the pretreated kapok fiber, and a cavity of the kapok fiber after swelling can be reserved by the freeze drying method, so that the kapok fiber can be ensured to be slightly deformed under the same action force of a spinning machine and not to be completely flattened in the subsequent blending process, and then the turmeric dye can enter the fiber cavity in the dyeing process, so that the dye uptake and the dyeing effect are improved; in addition, in the dyeing process, the dye liquor temperature is the intensification gradually, the turmeric dyestuff gets into kapok fiber cavity at the gradual heating up in-process, when the dye liquor temperature rose to 90 ~ 95 ℃ the time, the dye liquor got into most kapok fiber cavity, make the inside realization of fibre cavity dye, then after dyeing, discharge dye liquor and add cold water rapidly, the sudden reduction of temperature can make fibre cavity part collapse, make the dyestuff that gets into in the fibre cavity can fix inside kapok fiber cavity, thereby improve the dyeing fastness.
In addition, in the technical scheme provided by the invention, the turmeric dyeing process and the water-soluble fiber removing process are simultaneously carried out, so the dyeing process after the kapok fiber is spun is particularly important. The dyeing is carried out by adopting a slow heating mode, the dye is gradually dyed on the kapok fiber in the slow heating process, and the dye can fully enter the middle cavity of the kapok fiber and is dyed on the inner side of the fiber due to the enlargement of the kapok cavity in the pretreatment process; and then when the temperature of the dye solution rises to above 90 ℃, the water-soluble vinylon fiber starts to dissolve, after dyeing is finished and the water-soluble vinylon fiber is completely dissolved, the dye solution in which the water-soluble vinylon fiber is dissolved is discharged, then cold water is added for washing, the kapok fiber is quickly cooled, the cavity part of the kapok fiber collapses, and then the water-soluble fiber solution and the kapok fiber are fully washed in a floating color mode through subsequent acid washing and water washing procedures, so that the plant turmeric dyed kapok fiber pure spun yarn can be obtained, and the kapok yarn is high in color fastness.
The invention has the beneficial effects that:
according to the method, through the synergistic effect of the pretreatment, the drying treatment and the dyeing treatment of the kapok fiber, the dye enters the interior of the kapok fiber, so that the color fastness is improved; meanwhile, the method of concomitantly spinning the water-soluble fiber and the kapok fiber into the yarn is adopted, so that the kapok fiber is spun into the yarn, and the water-soluble fiber is removed in the subsequent dyeing process, so that the pure kapok fiber spun yarn is obtained, namely the pure kapok yarn, and the breaking strength and the like of the kapok fiber spun yarn meet the use requirements of textiles. In addition, the dyeing process and the water-soluble fiber removing process are simultaneously carried out, so that the working procedures are saved.
Detailed Description
The invention provides a pure kapok fiber spinning method adopting plant turmeric dyeing, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further explained in detail through the following specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Example 1
The embodiment provides a method for pure spinning kapok fiber dyed by plant turmeric, which comprises the following steps:
(1) kapok fiber pretreatment
Weighing 500g of kapok fiber, soaking the kapok fiber in 10g/L of caustic soda solution at normal temperature for 1 hour, and then washing the kapok fiber with 5g/L of acetic acid solution until the kapok fiber is neutral;
(2) drying treatment
Freeze-drying the kapok fiber pretreated in the step (1) at-20 ℃ for 24 hours to remove water;
(3) blended yarn
Blending the treated white kapok fiber and the water-soluble vinylon fiber in a blending ratio of 1:1 on a ring spinning machine to prepare kapok fiber and water-soluble vinylon blended spun yarn, and winding the spun yarn into a cone yarn;
(4) dyeing process
(4-1) adding sufficient normal-temperature water into a dye vat, and adding glacial acetic acid and citric acid to adjust the pH value to 4.5;
(4-2) performing front yarn reversing and bobbin loosening on the cone yarn obtained in the step (3), placing the cone yarn in a dye vat, and running for 5min to enable the blended yarn to be blended
Completely soaking the water solution;
(4-3) adding turmeric dye into a dye vat, wherein the mass of the added turmeric dye accounts for 2% of the dry mass of the kapok fiber, running for 10min at room temperature, then heating to 95 ℃ at the speed of 1 ℃/min, and keeping the temperature for 50 min;
(4-4) after the heat preservation is finished, discharging the dye liquor, immediately adding cold water with the temperature of 10 ℃ into a dye vat to wash for 2 times, 5min each time, using acetic acid solution with the concentration of 0.5g/L to wash for 2 times, 5min each time, then washing for 2 times, 5min each time, then dehydrating, drying, and then pouring and tightening the yarn to obtain the pure kapok yarn.
The kapok yarn prepared by the preparation method of example 1 was tested, and the kapok fiber content in the yarn was 99.9%, the water-soluble vinylon content was 0.1%, the yarn color fastness to washing was grade 4, and the soaping color fastness was grade 3.5.
Example 2
The embodiment provides a method for pure spinning kapok fiber dyed by plant turmeric, which comprises the following steps:
(1) kapok fiber pretreatment
Weighing 500g of kapok fiber, soaking the kapok fiber in 5g/L of caustic soda solution at normal temperature for 1.5 hours, and then washing the kapok fiber with 3g/L of acetic acid solution until the kapok fiber is neutral;
(2) drying treatment
Freeze-drying the kapok fiber pretreated in the step (1) at-60 ℃ for 20h to remove water;
(3) Blended yarn
Blending the treated white kapok fiber and the water-soluble vinylon fiber in a blending ratio of 1:0.8 on a ring spinning machine to prepare kapok fiber and water-soluble vinylon blended roving, and winding the kapok fiber and the water-soluble vinylon blended roving into a cone;
(4) dyeing
(4-1) adding sufficient normal-temperature water into a dye vat, and adding glacial acetic acid and citric acid to adjust the pH value to 4;
(4-2) performing front yarn pouring and bobbin loosening on the cone yarn obtained in the step (3), placing the cone yarn in a dye vat, and operating for 5min to enable the blended yarn to be completely soaked in the aqueous solution;
(4-3) adding turmeric dye into a dye vat, wherein the mass of the added turmeric dye accounts for 3% of the dry mass of the kapok fiber, running for 10min at room temperature, then heating to 90 ℃ at the speed of 2 ℃/min, and keeping the temperature for 60 min;
(4-4) after heat preservation, discharging dye liquor, immediately adding cold water at 5 ℃ into a dye vat to wash for 2 times and 5min each time, pickling for 2 times and 5min each time by using an acetic acid solution of 0.7g/L, then washing for 2 times and 5min each time by using normal-temperature water, then dehydrating, drying, then pouring yarns and tightening a cylinder to obtain the pure kapok yarn roving cylinder yarn, and then continuously roving and spinning to obtain the pure kapok yarn.
The kapok yarn prepared by the preparation method of example 2 was tested, and the kapok fiber content in the yarn was 99.9%, the water-soluble vinylon content was 0.1%, the yarn color fastness to washing was 4.5, and the soaping color fastness was 4.
Example 3
The embodiment provides a method for pure spinning of kapok fiber dyed by plant turmeric, which comprises the following steps:
(1) kapok fiber pretreatment
Weighing 500g of kapok fiber, soaking the kapok fiber in 5g/L of caustic soda solution at normal temperature for 1.5 hours, and then washing the kapok fiber with 3g/L of acetic acid solution until the kapok fiber is neutral;
(2) drying treatment
Freeze-drying the kapok fiber pretreated in the step (1) at-60 ℃ for 20h to remove water;
(3) blended yarn
Blending the treated white kapok fiber and the water-soluble vinylon fiber in a blending ratio of 1:0.5 on a ring spinning machine to prepare kapok fiber and water-soluble vinylon blended spun yarn, and winding the spun yarn into a cone yarn;
(4) dyeing process
(4-1) adding sufficient normal-temperature water into a dye vat, and adding glacial acetic acid and citric acid to adjust the pH value to 4;
(4-2) performing front yarn pouring and bobbin loosening on the cone yarn obtained in the step (3), placing the cone yarn in a dye vat, and operating for 5min to enable the blended yarn to be completely soaked in the aqueous solution;
(4-3) adding turmeric dye into a dye vat, wherein the mass of the added turmeric dye accounts for 3% of the dry mass of the kapok fiber, running for 10min at room temperature, then heating to 90 ℃ at the speed of 2 ℃/min, and keeping the temperature for 60 min;
(4-4) after heat preservation, pressurizing and discharging the dye liquor above the cone yarn, immediately adding cold water with the temperature of 0 ℃ into a dye vat to wash for 2 times, 5min each time, using acetic acid solution with the concentration of 0.5g/L to wash for 2 times, 5min each time, then washing for 3 times, 5min each time, then dehydrating, drying, and then pouring the yarn and tightening the cone to obtain the pure kapok yarn.
The kapok yarn prepared by the preparation method of example 3 was tested, and the kapok fiber content in the yarn was 99.92%, the water-soluble vinylon content was 0.08%, the yarn washing color fastness was 4.5 grade, and the soaping color fastness was 4.5 grade, but the hollowness of the kapok yarn prepared by example 3 was reduced compared with examples 1 and 2.
Comparative example 1
The embodiment provides a method for pure spinning kapok fiber dyed by plant turmeric, which comprises the following steps:
(1) kapok fiber pretreatment
Weighing 500g of kapok fiber, soaking the kapok fiber in 10g/L of caustic soda solution at normal temperature for 1 hour, and then washing the kapok fiber with 5g/L of acetic acid solution until the kapok fiber is neutral;
(2) drying treatment
Drying the kapok fiber pretreated in the step (1) at 100 ℃ for 12h to remove water;
(3) blended yarn
Blending the treated white kapok fiber and the water-soluble vinylon fiber in a blending ratio of 1:1 on a ring spinning machine to prepare kapok fiber and water-soluble vinylon blended spun yarn, and winding the spun yarn into a cone yarn;
(4) dyeing process
(4-1) adding sufficient normal-temperature water into a dye vat, and adding glacial acetic acid and citric acid to adjust the pH value to 4.5;
(4-2) performing front yarn pouring and bobbin loosening on the cone yarn obtained in the step (3), placing the cone yarn in a cone yarn dyeing vat, and running for 5min to enable the blended yarn to be completely soaked in the aqueous solution;
(4-3) adding turmeric dye into the dye vat, wherein the mass of the added turmeric dye accounts for 2% of the dry mass of the kapok fiber, running for 10min at room temperature, then heating to 95 ℃ at the speed of 1 ℃/min, and preserving heat for 50 min;
(4-4) after the heat preservation is finished, discharging the dye liquor, immediately adding cold water with the temperature of 10 ℃ into a dye vat to wash for 2 times, 5min each time, using acetic acid solution with the concentration of 0.5g/L to wash for 2 times, 5min each time, then washing for 2 times, 5min each time, then dehydrating, drying, and then pouring and tightening the yarn to obtain the pure kapok yarn.
The kapok yarn prepared by the preparation method of the comparative example 1 is detected, the kapok fiber content in the yarn is 99.8%, the water-soluble vinylon content is 0.1%, the washing color fastness of the yarn is 2.5 grade, and the soaping color fastness is 2 grade. According to the comparative example, a high-temperature drying method is adopted after the kapok fiber is pretreated, and the cavity of the kapok fiber gradually collapses and shrinks in the high-temperature drying process, so that the dyeing effect is influenced.
Comparative example 2
The embodiment provides a method for pure spinning kapok fiber dyed by plant turmeric, which comprises the following steps:
(1) weighing 500g of kapok fiber;
(2) blended yarn
Blending kapok fiber and water-soluble vinylon fiber in a blending ratio of 1:1 on a ring spinning machine to prepare kapok fiber and water-soluble vinylon blended spun yarn, and winding the spun yarn into cone yarn;
(3) Dyeing
(3-1) adding sufficient normal-temperature water into a dye vat, and adding glacial acetic acid and citric acid to adjust the pH value to 4.5;
(3-2) performing front yarn pouring and bobbin loosening on the cone yarn obtained in the step (2), placing the cone yarn in a cone yarn dyeing vat, and operating for 5min to enable the blended yarn to be completely soaked in the aqueous solution;
(3-3) adding turmeric dye into a dye vat, wherein the mass of the added turmeric dye accounts for 2% of the dry mass of the kapok fiber, running for 10min at room temperature, then heating to 95 ℃ at the speed of 1 ℃/min, and keeping the temperature for 50 min;
(3-4) after the heat preservation is finished, discharging the dye liquor, immediately adding cold water with the temperature of 10 ℃ into a dye vat to wash for 2 times, 5min each time, using acetic acid solution with the concentration of 0.5g/L to wash for 2 times, 5min each time, then washing for 2 times, 5min each time, then dehydrating, drying, and then pouring and tightening the yarn to obtain the pure kapok yarn.
The kapok yarn prepared by the preparation method of the comparative example 2 is detected, and the kapok fiber content in the yarn is 99.8%, the water-soluble vinylon content is 0.1%, the washing color fastness of the yarn is 3.5 grade, and the soaping color fastness is 3 grade.
Comparative example 3
The embodiment provides a method for pure spinning kapok fiber dyed by plant turmeric, which comprises the following steps:
(1) Weighing 500g of kapok fiber;
(2) blended yarn
Blending kapok fiber and water-soluble vinylon fiber in a blending ratio of 1:1 on a ring spinning machine to prepare kapok fiber and water-soluble vinylon blended spun yarn, and winding the spun yarn into cone yarn;
(3) dyeing process
(3-1) adding sufficient normal-temperature water into a dye vat, and adding glacial acetic acid and citric acid to adjust the pH value to 4.5;
(3-2) performing front yarn pouring and bobbin loosening on the cone yarn obtained in the step (2), placing the cone yarn in a cone yarn dyeing vat, and running for 5min to enable the blended yarn to be completely soaked in the aqueous solution;
(3-3) adding turmeric dye into a dye vat, wherein the mass of the added turmeric dye accounts for 2% of the dry mass of the kapok fiber, running for 10min at room temperature, then heating to 95 ℃ at the speed of 1 ℃/min, and keeping the temperature for 50 min;
(3-4) after the heat preservation is finished, discharging the dye liquor when the temperature of the dye liquor is reduced to 50 ℃, washing the dye liquor for 2 times with normal-temperature water in a dye vat, 5min each time, washing the dye liquor for 2 times with 0.5g/L acetic acid solution, 5min each time, washing the dye liquor for 2 times again, 5min each time, dehydrating, drying, and then pouring and tightening the yarn to obtain the pure kapok yarn.
The kapok yarn prepared by the preparation method of the comparative example 2 is detected, the kapok fiber content in the yarn is 99.8%, the water-soluble vinylon content is 0.1%, the washing color fastness of the yarn is 2.5 grade, and the soaping color fastness is 2 grade.
Comparative example 4
The embodiment provides a method for pure spinning kapok fiber dyed by plant turmeric, which adopts the kapok fiber to directly spin and comprises the following steps:
(1) weighing 500g of kapok fiber;
(2) spinning on a ring spinning machine to prepare the kapok fiber pure yarn.
The yarn is difficult to form by the method, and the spinnability of the kapok fiber is poor.
The parts which are not described in the invention can be realized by adopting or referring to the prior art.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (8)
1. A method for spinning kapok fiber by dyeing plant turmeric is characterized by comprising the following steps:
(1) kapok fiber pretreatment
Soaking the kapok fiber in an alkaline solution at normal temperature for 0.5-2 hours, and then washing the kapok fiber with an acid solution to be neutral;
(2) drying treatment
Freeze-drying the kapok fiber pretreated in the step (1) to remove water;
(3) blended yarn
Blending the kapok fiber dried in the step (2) with the water-soluble vinylon fiber to obtain blended yarn of the kapok fiber and the water-soluble vinylon fiber;
(4) Dyeing
And (4) placing the blended yarn of the kapok fiber and the water-soluble vinylon fiber prepared in the step (3) in a dye vat, then adding a turmeric dye for dyeing, and dehydrating and drying after dyeing to obtain the pure kapok fiber yarn.
2. The method for spinning kapok fiber dyed by plant turmeric according to claim 1, wherein in the step (1), the alkaline solution is NaOH solution, and the concentration is 3-10 g/L; the acidic solution is an acetic acid solution, and the solubility is 3-10 g/L.
3. The method for spinning kapok fiber dyed by plant turmeric according to claim 1, wherein the freeze-drying temperature in the step (2) is-10 to-100 ℃, and the freeze-drying time is 12 to 24 hours.
4. The pure kapok fiber spinning method adopting vegetable turmeric dyeing according to claim 1, characterized in that the blending ratio of the kapok fiber and the water-soluble vinylon in the step (3) is 1: 0.2-1.
5. The method for spinning kapok fiber dyed by plant turmeric according to claim 1, wherein the dyeing process in the step (4) is specifically as follows:
(4-1) adding sufficient normal-temperature water into a dye vat, and adding glacial acetic acid and citric acid to adjust the pH value to 4-5;
(4-2) putting the kapok fiber and water-soluble vinylon blended yarn prepared in the step (3) into a dye vat and running for 3-5 min to enable the blended yarn to be completely soaked in the aqueous solution;
(4-3) adding a turmeric dye into the dye vat, running for 5-15 min at room temperature, then heating to 90-95 ℃ at the speed of 0.5-3 ℃/min, and keeping the temperature for 45-60 min;
(4-4) after the heat preservation is finished, quickly discharging the dye liquor, immediately adding cold water with the temperature of 0-10 ℃ into a dye vat to wash for 1-3 times, pickling for 2-3 times, then washing for 2-3 times with normal-temperature water, and then dehydrating and drying to obtain the kapok fiber pure spinning yarn.
6. The pure kapok fiber spinning method adopting vegetable turmeric dyeing according to claim 5, wherein the bath ratio in the step (4-1) is 1: 10-15.
7. The pure kapok fiber spinning method adopting plant turmeric dyeing according to claim 5, characterized in that the mass of the turmeric dye added in the step (4-3) accounts for 0.1-3% of the dry mass of the kapok fiber.
8. The method for spinning kapok fiber dyed by plant turmeric according to claim 5, wherein an acetic acid solution is adopted during acid washing in the step (4-4), and the concentration of the acetic acid solution is 0.3-0.8 g/L.
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