CN112522968A - Method for improving rubbing fastness of dark cashmere fabric - Google Patents
Method for improving rubbing fastness of dark cashmere fabric Download PDFInfo
- Publication number
- CN112522968A CN112522968A CN202011403855.0A CN202011403855A CN112522968A CN 112522968 A CN112522968 A CN 112522968A CN 202011403855 A CN202011403855 A CN 202011403855A CN 112522968 A CN112522968 A CN 112522968A
- Authority
- CN
- China
- Prior art keywords
- temperature
- cashmere
- improving
- dyeing
- added
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000000085 cashmere Anatomy 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 55
- 239000004744 fabric Substances 0.000 title claims abstract description 16
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 74
- 238000004043 dyeing Methods 0.000 claims abstract description 52
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000005406 washing Methods 0.000 claims abstract description 36
- 230000008569 process Effects 0.000 claims abstract description 33
- 239000003513 alkali Substances 0.000 claims abstract description 21
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims abstract description 20
- 235000019253 formic acid Nutrition 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 239000000080 wetting agent Substances 0.000 claims abstract description 16
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 27
- 235000017550 sodium carbonate Nutrition 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000002518 antifoaming agent Substances 0.000 claims description 8
- 239000012752 auxiliary agent Substances 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 230000003472 neutralizing effect Effects 0.000 claims description 4
- KRMAZPGDYXHYMX-UHFFFAOYSA-N lanatin Natural products O1C(=O)C=CC2=C1C(C=CO1)=C1C=C2OCC=C(C)C KRMAZPGDYXHYMX-UHFFFAOYSA-N 0.000 claims description 3
- 239000013530 defoamer Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 abstract description 41
- 238000007667 floating Methods 0.000 abstract description 5
- 238000006386 neutralization reaction Methods 0.000 abstract description 2
- 239000000975 dye Substances 0.000 description 42
- 238000005299 abrasion Methods 0.000 description 5
- 238000001238 wet grinding Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000009837 dry grinding Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000004044 disperse dyeing Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- -1 hydrogen ions Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000985 reactive dye Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- 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
- D06P1/38—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 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
- 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
- D06P1/44—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 insoluble pigments or auxiliary substances, e.g. binders
- D06P1/445—Use of auxiliary substances before, during or after dyeing or printing
-
- 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
- D06P3/14—Wool
- D06P3/148—Wool 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
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
- D06P5/04—After-treatment with organic compounds
-
- 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
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
- D06P5/10—After-treatment with compounds containing metal
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Coloring (AREA)
Abstract
The invention relates to a method for improving the rubbing fastness of dark cashmere fabric, which comprises the steps of pretreatment, dyeing, alkali washing and neutralization, wherein the alkali washing is 2 times of alkali washing, the amount of soda is less than that of the second time for the first time, when the amount of formic acid is A mol, 0.4-0.6A mol of soda is added in the alkali washing for the first time, the temperature is increased to 80-85 ℃, the operation is 20-25 min, the liquid is emptied after the temperature is reduced, 0.5-1 g/L wetting agent is added, the temperature is increased to 45-50 ℃, the operation is 20-40 min, the second time of alkali washing is carried out after the emptying, the amount of soda for the second time is 0.2-0.5A mol, the temperature is increased to 80-85 ℃, the operation is 20-25 min, and then the temperature is reduced to 30-35 ℃ for washing once; in the industrial cashmere dyeing process, the method improves the fastness of the dye by improving the dyeing process and selecting a proper dyeing assistant, and reduces the loss of cashmere fibers as much as possible when removing the floating color in the post-treatment so as to improve the wear-resistant color fastness of the dyed cashmere.
Description
Technical Field
The invention relates to the field of cashmere processing, in particular to a method for improving the rubbing fastness of dark cashmere fabric.
Background
The cashmere fiber is the finest of animal fibers, has uniform fineness and small density, has the average fineness of 15-16 mu m, is closely arranged in spinning and weaving, has good cohesive force and good heat retention property. The cross section of cashmere fiber is mostly regular round, and compared with other fibers, cashmere has the advantages of natural luster, softness, purity, gorgeous appearance and the like. The cashmere fiber is suitable for being processed into knitwear with plump hand feeling, softness and good elasticity because of large crimp number, crimp rate and crimp recovery rate. The cashmere fabric has the characteristics of soft hand feeling, plump suede, good heat retention, strong moisture absorption, natural and soft luster, comfortable wearing and the like, and is an ideal and good product for pursuing high-grade and perfect clothes.
However, the dye concentration of the cashmere dark products is high and exceeds the color absorption amount of the fibers, so that the oversaturation phenomenon is generated to generate loose color, the cashmere dark products are easy to loosen under the action of external force (by friction or pressure), the color fastness index cannot meet the requirement, and the quality of the cashmere dark products is influenced. Therefore, many dyeing manufacturers are eagerly seeking a technology for improving the deep color fastness of cashmere for many years.
In the prior art, part of methods for improving the rubbing fastness of dark cashmere fabrics are as follows:
CN103952926A discloses a dyeing formula and a process for improving the color fastness of dark cashmere products, which adopts a microwave pretreatment and an auxiliary agent addition method to improve the color fastness. After microwave treatment, the scale layer on the surface of the cashmere fiber is etched, so that the main barrier for preventing the dye from entering the fiber is damaged, and the dye can enter the fiber more easily and more. Therefore, the dye remained on the surface of the fiber is relatively reduced, the washing fastness and the rubbing fastness of the cashmere fabric are improved to a certain extent, and the dry grinding and the wet grinding can reach more than level 4. Although the method can effectively improve the rubbing fastness, the pretreatment is carried out by a microwave method before dyeing, and because cashmere needs to be produced in large scale in industrial production and the existing microwave device cannot meet the continuous production process in large scale, the microwave pretreatment mode is not suitable for industrial cashmere dyeing.
CN1607294 discloses a dyeing technology for improving the color fastness of cashmere fiber and products thereof, and the technological process of the disperse dyeing is as follows: firstly, pretreating cashmere by using a low-temperature assistant, then adding a dyeing assistant, finishing a dyeing process, and then carrying out post-treatment by adopting a mode of alkali washing twice, wherein the first time is as follows: adjusting the pH value to 8.0-8.5 by ammonia water or soda ash at the temperature of 40 ℃, running for 10 minutes, heating at the speed of 5 ℃/min, raising the temperature to 80 ℃, treating for 20 minutes at constant temperature, and then cooling to 30 ℃ for washing; and (3) for the second time: adjusting the pH value to 8.0-8.5 by using sodium carbonate, operating for 10 minutes, adding a soaping agent, heating at 5 ℃/min, raising the temperature to 85 ℃, carrying out constant-temperature treatment for 20 minutes, and then cooling to 30 ℃ for washing. And finally neutralizing with acetic acid. The cashmere obtained by the scheme has the wash fastness of more than 3 grade and the water fastness of more than 4 grade, but the wear fastness is still obviously lower, and the cashmere is subjected to dry grinding of 3-4 grade and wet grinding of 2-3 grade. More than 3 grades are required for wet grinding to be qualified products, and more than 4 grades are required for dry grinding and wet grinding to be excellent products. Therefore, the wear resistance fastness of the cashmere obtained by the dyeing process needs to be further improved.
Pom winter et al in "dyeing process for improving color fastness of dark cashmere products" point out that "dyeing of fibers with dyes can generally be divided into three processes: (1) the dye diffuses from the liquor to the surface of the fibre and dyes the surface of the fibre, a process known as adsorption. (2) The dye adsorbed on the surface of the fiber diffuses into the fiber until the dyeing equilibrium or substantial equilibrium, a process known as dye diffusion in the fiber. (3) The dye and the fiber are fixed on the fiber through chemical reaction. The absorption and diffusion of the dye are mainly determined by the structure of the dye and the structure and performance of the surface of the fiber, and are influenced by a plurality of factors including equipment, the dye, dyeing auxiliaries, dyeing processes (including pH value, temperature, heating rate, holding time and the like) and fiber performance, and if the factors cannot be scientifically controlled, the appearance quality (color, leveling property) and the inherent quality (permeability and color fastness) of the product are directly influenced. Therefore, only by scientifically and reasonably testing the factors, the dyeing quality can be ensured, and the product grade can be improved. According to the principle, the low-temperature surfactant is added in the cashmere dyeing process to improve the wettability of cashmere fibers, so that scale layers are swelled, the fiber structure becomes loose, the surface tension of a dye bath is reduced, dyes are adsorbed by cashmere as soon as possible and are diffused and permeated into the fibers, meanwhile, the dyes and the fibers have sufficient reaction fixation time by adjusting the dyeing process, the dye uptake is increased, meanwhile, the after-finishing process is added, so that the dyes which are not fixed are thoroughly removed, the combination of the fixed dyes and the fibers is firmer, and the color fastness of the cashmere fibers and products thereof is improved. "
The data show that the improvement of the wear-resistant color fastness of cashmere from the perspective of the dyeing process mainly comprises two aspects, namely a dyeing process and a post-treatment process. Improved dyeing processes and auxiliaries to make the bond of the fixed dye to the fiber more robust, the post-treatment enables the unfixed dye to be completely removed. In the dyeing process, the dye, the dyeing assistant and the low-temperature dyeing process play main roles, and the currently widely used reactive dye lanatin has good dyeing performance. Zeli et al, in the research on the fastness to perspiration of cashmere dyed with Lannasu red series dyes, used in the low temperature dyeing process, effectively improved the fastness to perspiration of cashmere. Therefore, in the existing process, the post-treatment is very important to improve the abrasion-resistant color fastness of cashmere.
Disclosure of Invention
The invention provides a method for improving the rubbing fastness of dark cashmere fabric, which improves the fastness of dye by improving the dyeing process and selecting a proper dyeing assistant in the cashmere dyeing process of industrial production, and reduces the loss of cashmere fiber as much as possible during removing floating color in post-treatment so as to improve the wear-resistant color fastness of dyed cashmere.
The invention realizes the purpose through the following technical scheme:
a method of improving the crockfastness of dark cashmere fabrics, said method comprising the steps of:
(1) pretreatment: adding a wetting agent into a dye vat with a bath ratio of 1: 5-10, wherein the adding amount is 0.5-1 g/L, heating to 45-50 ℃, running for 20-40 minutes, emptying, and then cleaning with clear water once;
(2) the dyeing process comprises the following steps: adding 0.5-1.0 g/L of defoaming agent into a dye vat with a bath ratio of 1: 5-10, adjusting the pH value of the solution to 4-4.3 by adding formic acid, adding formic acid A in a molar ratio, stirring for 10-15 min, continuously adding 2-3% of low-temperature dyeing auxiliary agent and 3% of lanatine dye, operating for 10-15 min, heating to 85-90 ℃ at a speed of 1.5 ℃/min, and operating for 60-75 min;
(3) alkali washing: emptying liquid of the dyed cashmere obtained in the step (2), adding clear water at a bath ratio of 1: 5-10, adding 0.4-0.6A mol of soda ash, heating to 80-85 ℃, running for 20-25 min, emptying the liquid after cooling, adding 0.5-1 g/L wetting agent for washing, carrying out secondary alkali washing after emptying, adding 0.2-0.4A times of soda ash, heating to 80-85 ℃, running for 20-25 min, cooling to 30-35 ℃, and washing for once;
(4) neutralizing: adjusting pH to 7 with formic acid, heating to 40 deg.C, running for 10min, draining, and washing again.
Further, in the alkali washing process in the step (2), 0.3A mol of soda ash is dissolved in water at the temperature of 35-45 ℃, a soda ash aqueous solution with the mass fraction of 40-50% is prepared, and the soda ash aqueous solution is added into a dye vat in a dropwise adding mode within 30-40 min.
Further, the wetting agent is ULTRAVON CN.
Further, the low-temperature dyeing auxiliary agent is MIRALAN LTD.
Further, the defoamer is ALBAFLOW CIR.
Further, the dyeing process comprises the following steps: adding 1.0g/L of defoaming agent into a dye vat with a bath ratio of 1:6, adjusting the pH value of the solution to 4 by adding formic acid, adding formic acid A in a molar ratio, stirring for 10-15 min, continuously adding 3% of low-temperature dyeing auxiliary agent and 3% of lanatin dye, operating for 15min, heating to 85-90 ℃ at a speed of 1.5 ℃/min, and operating for 75 min.
Further, the alkali washing process comprises the following steps: after liquid of dyed cashmere is emptied, clear water is added, the bath ratio is 1:6, 0.5A mol of soda ash is added, the temperature is increased to 80 ℃, the operation is carried out for 20min, the liquid is emptied after the temperature is reduced, 1g/L of wetting agent is added, the temperature is increased to 45-50 ℃, the operation is carried out for 20-40 min, the second alkali washing is carried out after the emptying, 0.2A mol of soda ash is added, the temperature is increased to 80-85 ℃, the operation is carried out for 20-25 min, and then the temperature is reduced to 30-35 ℃ for washing once.
In the present application, the wetting agent ULTRAVON CN, which is a highly efficient wetting agent, has a strong wetting efficiency, and has low foam, is added during dyeing. After the cashmere is treated by the wetting agent, the scale layer can be swelled, so that the dye can enter the fiber, and the low-foam wetting agent can reduce the surface tension of the liquid, so that the dye can be adsorbed by the cashmere and diffused into the fiber as soon as possible.
In the dyeing process, a defoaming agent ALBAFLOW CIR is added for removing air in bath liquid, and has the functions of wetting and penetration, so that the dye is uniformly distributed on the cashmere fiber and further penetrates into the fiber. During the dyeing process, the defoaming agent is added to ensure that the dyeing is uniform. If the dye is not uniformly adsorbed on the surface of the fiber, partial flooding with high dye concentration is serious, and when the flooding is removed by washing with alkali, the added alkali is excessive for the fiber with low dye concentration. At this time, in the portion where the dye concentration is low, the excessive alkali fineness may cause damage to the fiber, resulting in a decrease in abrasion resistance. Therefore, the addition of the defoaming agent during dyeing is very helpful for uniform dyeing and improvement of abrasion resistance fastness.
During dyeing, formic acid is added to adjust the pH value of the bath liquid to be 4-4.3, and too low or too high pH value can reduce the fixation rate of the dye, so that the wear resistance fastness is reduced.
In the alkaline cleaning process, alkaline cleaning is carried out twice, and the purpose of the alkaline cleaning is to remove formic acid in the bath solution on one hand and remove flooding on the other hand. During the alkaline washing process, it is important to add a proper amount of soda ash. In the prior art, in order to completely remove the flooding, the pH value of the bath liquid is controlled to be 8.0-8.5 when the soda ash is added. However, in the range of the pH value of 8.0-8.5, excessive soda is easily caused, and the cashmere fibers are damaged by the excessive soda, so that the wear-resistant color fastness is reduced. When pH valueWhen the concentration is 8.0, that is, the concentration of hydrogen ions [ H ]+]＝10-8mol/L, thus [ OH+]＝10-6mol/L, sodium carbonate dissociation constant of 1.78X 10-4Thus, sodium carbonate was added at a concentration of 10-6/(1.78×10-4)＝0.56×10-2The mass of soda ash added to a bath of mol/L, for example 100L, is 0.56X 10-2mol/L × 106 × 100 ═ 59.36 g. When the pH is 8.5, [ OH ]+]＝3.2×10-6mol/L, sodium carbonate dissociation constant of 1.78X 10-4Thus, the concentration of sodium carbonate added was (3.2X 10)-6)/(1.78×10-4)＝1.79×10-2mol/L, the mass of soda added in 100L bath is 1.79 multiplied by 10-2mol/L×106×100＝189.74g。
Therefore, in the actual production, the pH value is controlled to be 8.0-8.5, the soda ash is added into 100L of bath liquid in an amount of 59.36-189.74 g, and the amount difference of the added soda ash is very large. Different workers or different production batches can therefore cause the cashmere to have completely different wear-resistance.
In the application, the amount of the soda ash is determined by the amount of formic acid, and when A mol of formic acid is added in the first alkali washing, the amount of the soda ash is 0.4-0.6A mol, and the first alkali washing is mainly used for neutralizing the formic acid in the bath liquid. And during the second step of alkaline washing, adding 0.2-0.5A mol of soda ash and adding a wetting agent. This is done to neutralize formic acid floating on the fibers, on the one hand, and to remove the floating color, on the other hand. And the mode of dropwise adding the soda solution is adopted, so that the problems that the excessive part of soda causes large layout floating amount and the reduction of the wear-resistant color fastness can be avoided. Meanwhile, the pH value of the solution after adding the sodium carbonate twice is also between 8.0 and 8.5.
Compared with the prior art, the invention has the following beneficial effects:
1. the color fixation is firmer by improving the formula of the auxiliary agent in the dyeing process.
2. And the addition of the soda twice is adopted, and the amount of the added soda is accurately calculated, so that the excessive soda is prevented from being added, and the damage to the fibers is reduced. Not only the color fastness to abrasion is improved from the viewpoint of removing the flooding, but also the color fastness to abrasion is improved by reducing the damage of the fiber by controlling the using amount of the soda ash.
Detailed Description
Example 1
A method for improving the rubbing fastness of dark cashmere fabric comprises the steps of dyeing cashmere into black, pretreating loose cashmere in the first step, adding 100kg of cashmere and 600L of clear water into a dye vat, adding 300g of wetting agent ULTRAVON CN, heating to 45-50 ℃, running for 40 minutes, emptying, and cleaning once with clear water; adding 600L of clear water into a dye vat, adding 300g of defoaming agent ALBAFLOW CIR, adjusting the pH value of bath liquid to be 4-4.3 by adding formic acid, adding 1.3kg of formic acid (26.26 mol) at the moment, stirring for 15min, continuously adding 2kg of low-temperature dyeing auxiliary agent MIRALAN LTD and 3kg of black lanner dye, heating to 85 ℃ at the speed of 1.5 ℃/min after running for 15min, and running for 75 min; the third step is alkaline washing, wherein after the dyed cashmere is emptied, 800L of clear water is added, 12.26 moles of soda are added, namely 1.3kg of soda is added, 1.3kg of soda is dissolved in water, a soda water solution with the mass fraction of 40-50% is prepared, the soda water solution is added into a dye vat in a dropping mode within 30-40 min, the temperature is increased to 80 ℃, the operation is carried out for 25min, the liquid is emptied after the temperature is reduced, then 500g/L of wetting agent is added, the temperature is increased to 45-50 ℃, the operation is carried out for 20-40 min, the secondary alkaline washing is carried out after the emptying, 0.65kg of soda is added, the temperature is increased to 80 ℃, the operation is carried out for 25min, and then the temperature is reduced to 30-35 ℃ for washing once; and the fourth step is neutralization, the pH value is adjusted to 7 by formic acid, the temperature is raised to 40 ℃, after 10min of operation, the liquid is emptied, washed once again, and dried to obtain black cashmere.
After the dyeing and finishing by the process, the friction color fastness of the cashmere is tested by the method in GB/T3920. The resulting crocking fastness was grade 4.
Comparative example 2
The same parameters and procedures as in example 1 except for the components in the table give the following crockfastness:
the foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (7)
1. A method for improving the rubbing fastness of dark cashmere fabric is characterized by comprising the following steps:
pretreatment: adding a wetting agent into a dye vat with a bath ratio of 1: 5-10, wherein the adding amount is 0.5-1 g/L, heating to 45-50 ℃, running for 20-40 minutes, emptying, and then cleaning with clear water once;
the dyeing process comprises the following steps: adding 0.5-1.0 g/L defoaming agent into a dye vat with a bath ratio of 1: 5-10, adjusting the pH value of bath liquid to be 4-4.3 by adding formic acid, adding formic acid A in a molar ratio, stirring for 10-15 min, continuously adding 2-3% low-temperature dyeing auxiliary agent and 3% lanonine dye, operating for 10-15 min, heating to 85-90 ℃ at a speed of 1.5 ℃/min, and operating for 60-75 min;
alkali washing: emptying liquid of the dyed cashmere obtained in the step (2), adding clear water at a bath ratio of 1: 5-10, adding 0.4-0.6A mol of soda ash, heating to 80-85 ℃, running for 20-25 min, emptying the liquid after cooling, adding 0.5-1 g/L of wetting agent for washing, carrying out secondary alkali washing after emptying, adding 0.2-0.4A mol of soda ash, heating to 80-85 ℃, running for 20-25 min, cooling to 30-35 ℃, and washing for once;
neutralizing: adjusting pH to 7 with formic acid, heating to 40 deg.C, running for 10min, draining, and washing again.
2. The method for improving the rubbing fastness of the dark cashmere fabric according to claim 1, characterized in that in the alkali washing process in the step (2), A mol of soda is dissolved in water at a temperature of 35-45 ℃, a 40-50% by mass of soda aqueous solution is prepared, and the soda aqueous solution is added into a dye vat in a dropping manner within 30-40 min.
3. The method for improving the crockfastness of dark cashmere fabrics according to claim 1, wherein said wetting agent is ULTRAVON CN.
4. The method for improving the rubbing fastness of dark cashmere fabric according to claim 1, characterized in that the low temperature dyeing assistant is MIRALAN LTD.
5. The method of claim 1, wherein the defoamer is ALBAFLOW CIR.
6. The method for improving the rubbing fastness of dark cashmere fabrics according to claim 1, characterized in that the dyeing process comprises: adding 1.0g/L of defoaming agent into a dye vat with a bath ratio of 1:6, adjusting the pH value of the solution to 4 by adding formic acid, adding formic acid A in a molar ratio, stirring for 10-15 min, continuously adding 3% of low-temperature dyeing auxiliary agent and 3% of lanatin dye, operating for 15min, heating to 85-90 ℃ at a speed of 1.5 ℃/min, and operating for 75 min.
7. The method for improving the rubbing fastness of the dark cashmere fabric according to claim 1, wherein the alkali washing process comprises the following steps: after liquid of dyed cashmere is emptied, clear water is added, the bath ratio is 1:6, 0.5A mol of soda ash is added, the temperature is increased to 80 ℃, the operation is carried out for 20min, the liquid is emptied after the temperature is reduced, 1g/L of wetting agent is added, the temperature is increased to 45-50 ℃, the operation is carried out for 20-40 min, the second alkali washing is carried out after the emptying, 0.2A mol of soda ash is added, the temperature is increased to 80-85 ℃, the operation is carried out for 20-25 min, and then the temperature is reduced to 30-35 ℃ for washing once.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011403855.0A CN112522968A (en) | 2020-12-02 | 2020-12-02 | Method for improving rubbing fastness of dark cashmere fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011403855.0A CN112522968A (en) | 2020-12-02 | 2020-12-02 | Method for improving rubbing fastness of dark cashmere fabric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112522968A true CN112522968A (en) | 2021-03-19 |
Family
ID=74997474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011403855.0A Pending CN112522968A (en) | 2020-12-02 | 2020-12-02 | Method for improving rubbing fastness of dark cashmere fabric |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112522968A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113668268A (en) * | 2021-09-13 | 2021-11-19 | 张家港扬子染整有限公司 | Dyeing process of superfine wool dark black wool tops |
| CN114438803A (en) * | 2022-01-26 | 2022-05-06 | 内蒙古工业大学 | Cashmere fiber dyeing and deepening method and deepening agent |
| CN114507995A (en) * | 2021-12-29 | 2022-05-17 | 浙江羊绒世家服饰股份有限公司 | Dyeing process for cashmere knitted garment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607294A (en) * | 2003-10-16 | 2005-04-20 | 内蒙古鄂尔多斯羊绒集团有限责任公司 | Dyeing technology for improving color fastness of cashmere fiber and its products |
| CN101289812A (en) * | 2008-05-23 | 2008-10-22 | 常熟市亨时特染织有限公司 | Dyeing process for silk and pashm blended yarn |
| CN108330705A (en) * | 2018-03-02 | 2018-07-27 | 宁夏荣昌绒业集团有限公司 | Cashmere staple in bulk Machine Washable product and preparation method thereof |
| CN109235076A (en) * | 2018-08-27 | 2019-01-18 | 江苏阳光股份有限公司 | A kind of natural dye dying technique of fleece fabrics |
-
2020
- 2020-12-02 CN CN202011403855.0A patent/CN112522968A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607294A (en) * | 2003-10-16 | 2005-04-20 | 内蒙古鄂尔多斯羊绒集团有限责任公司 | Dyeing technology for improving color fastness of cashmere fiber and its products |
| CN101289812A (en) * | 2008-05-23 | 2008-10-22 | 常熟市亨时特染织有限公司 | Dyeing process for silk and pashm blended yarn |
| CN108330705A (en) * | 2018-03-02 | 2018-07-27 | 宁夏荣昌绒业集团有限公司 | Cashmere staple in bulk Machine Washable product and preparation method thereof |
| CN109235076A (en) * | 2018-08-27 | 2019-01-18 | 江苏阳光股份有限公司 | A kind of natural dye dying technique of fleece fabrics |
Non-Patent Citations (3)
| Title |
|---|
| 中国纺织工程学会: "《纺织科学技术学科发展报告》", 31 March 2018, 中国科学技术出版社 * |
| 王箴: "《化工辞典》", 30 April 1985, 化学工业出版社出版 * |
| 董永春: "《纺织助剂化学与应用》", 31 July 2007, 中国纺织出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113668268A (en) * | 2021-09-13 | 2021-11-19 | 张家港扬子染整有限公司 | Dyeing process of superfine wool dark black wool tops |
| CN114507995A (en) * | 2021-12-29 | 2022-05-17 | 浙江羊绒世家服饰股份有限公司 | Dyeing process for cashmere knitted garment |
| CN114438803A (en) * | 2022-01-26 | 2022-05-06 | 内蒙古工业大学 | Cashmere fiber dyeing and deepening method and deepening agent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112522968A (en) | Method for improving rubbing fastness of dark cashmere fabric | |
| CN101363158A (en) | Dyeing and finishing technology of blended fabric of tenel and cotton | |
| WO2021003943A1 (en) | Dyeing and finishing process for highly elastic polyester composite fabric | |
| CN109371721A (en) | Complete cotton knitted fabric dyeing production technology | |
| CN111455700B (en) | Cationic polyester fabric dyeing and finishing method | |
| CN101413207B (en) | Dyeing and finishing process for sea silk fabric | |
| CN110952347A (en) | Method for improving active dyeing depth of pure cotton fabric | |
| CN111058316A (en) | Alkaline pad dyeing method for chinlon 56 and cellulose fiber blended fabric | |
| CN111910446A (en) | Polyester-cotton blended yarn dyeing process | |
| CN111172791A (en) | Enzyme dyeing one-bath dyeing process for cotton fabric | |
| CN114351336A (en) | Regenerated polyester super-hydrophilic quick-drying knitted fabric and preparation method thereof | |
| CN109629268A (en) | A kind of dyeing and printing process of diacetate fiber and zein fiber High-elasticity fabric | |
| CN110629566A (en) | Cheese dyeing method for improving color vividness of modified cellulose fiber blended yarns | |
| CN111254724A (en) | Dyeing process of woven wool, application of woven wool and wool textile | |
| CN110952348A (en) | Processing method for improving dyeing depth of cation modified piece-dyed fabric | |
| CN113062131B (en) | Short-flow processing technology for polyester-cotton knitted fabric | |
| CN112878069B (en) | Polyamide fabric dyeing process with high dye-uptake | |
| CN113957731A (en) | Process for improving fastness of soaping solution of cellulose fiber and polyester blended deep color fabric | |
| CN113215838A (en) | Rayon dyeing process in low-temperature environment | |
| CN110219184A (en) | A kind of salt-free cold-rolling heap staining method not boiling drift cotton fiber | |
| CN111424443A (en) | Short-process dyeing and finishing process for polyester-nylon viscose fabric | |
| CN114150518B (en) | Airflow vat dyeing processing technology for single-component easy-dyeing PTT fiber pure-spun fabric | |
| CN115559134B (en) | Dyeing and finishing process of five-surface fabric | |
| CN115506162A (en) | Nylon dyeing process for improving color light stability | |
| CN114703662B (en) | Finishing processing method for skin-friendly jean garment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 310051 building 7, 188 BINKANG Road, Binjiang District, Hangzhou City, Zhejiang Province Applicant after: Zhejiang cashmere family Clothing Co.,Ltd. Address before: No. 188, BINKANG Road, Binjiang District, Hangzhou City, Zhejiang Province 310051 Applicant before: Zhejiang cashmere family Clothing Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210319 |
|
| RJ01 | Rejection of invention patent application after publication |