Patent Application
20240052563
This application claims the benefit and priority of Chinese Patent Application No. 202210971203.X filed on Aug. 15, 2022, the disclosure of which is incorporated by reference herein in its entirety as part of the present application.
The present disclosure relates to the technical field of textiles, in particular to a method for dyeing and finishing a textile and a textile.
With a continuous improvement of people's living standards, consumers have increasingly higher requirements on the comfort, hygiene and other multi-functional characteristics of household textiles, and hope that textiles have a function of deodorization.
In order to make textiles have the function of deodorization, deodorizing fibers are usually used as a raw material of textile. The deodorization of existing deodorizing fibers is realized by modifying fibers, for example, by introducing a functional group with a deodorization function into molecular chain of fibers. The deodorization function is imparted by the functional group(s), while the existence of functional group would change characteristics of the fibers. If the fibers are woven into a cloth by a conventional dyeing and finishing process, it may not only adversely affect the color fastness and water washing resistance, but also make the functional group fall off and fail. Therefore, a new targeted dyeing and finishing method is needed.
The present disclosure provides a method for dyeing and finishing a deodorizing fiber textile, wherein a dyeing treatment is performed in stages, and various auxiliaries for dyeing are added in batches, so as to reduce the damage of a dyeing alkali agent to the deodorizing functional group on the fiber in the dyeing process as much as possible, and thereby solve a problem that the actual deodorizing performance of a deodorizing fiber textile is greatly reduced after dyeing with dyeing alkali agent having strong alkalinity in the prior art.
Provided is a method for dyeing and finishing a deodorizing fiber textile, comprising the following steps:
In some embodiments, the method further comprises a bleaching pretreatment step prior to the step S1, the bleaching pretreatment step comprising
In some embodiments, in step S4, washing and finishing the dyed textile comprises adding deionized water to the glacial acetic acid and adjusting a pH value of the resulting system to be in a range of 4.5-5.5 to obtain a washing solution, then immersing the dyed textile in the washing solution for 10-30 min, and finally washing off the glacial acetic acid on the textile with deionized water.
In some embodiments, the first part of the dyeing alkali agent accounts for 25%-40% by weight of the total amount of the dyeing alkali agent, and the second part of the dyeing alkali agent accounts for 60%-75% by weight of the total amount of the dyeing alkali agent.
In some embodiments, the step S2 is performed by adding the protective additive at an interval of 10-20 min after adding the dye, and then adding the first part of the dyeing alkali agent at an interval of 10-20 min.
In some embodiments, the first temperature is in a range of 30-45° C., and the first time is in a range of 5-15 min; the second temperature is in a range of 55-70° C., and the second time is in a range of 5-15 min; the third time is in a range of 50-60 min; the first heating rate is in a range of 0.5-2° C./min; and the pH value of the bath liquid during the third time period is in a range of 10-10.5.
In some embodiments, the first temperature is 40° C., and the first time is 15 min; the second temperature is 60° C., and the second time is 5 min; the third time is 60 min; and the first heating rate is 1° C./min.
In some embodiments, the method further comprises in step S1, measuring a hardness of the bath liquid during the first time period, and optionally adding a complexing agent to reduce the hardness of the bath liquid to be not more than 100 ppm according to measurement results.
In some embodiments, the protective additive is sodium sulfate.
In another aspect, the present disclosure provides a deodorizing fiber textile which is obtained by dyeing and finishing according to the method of the present disclosure.
In the method for dyeing and finishing a deodorizing fiber textile according to the present disclosure, sodium carbonate with weak alkalinity is used as a dyeing additive to dye the textile, and is added in two batches in the dyeing process, so as to reduce the damage to the deodorizing group(s) on the fiber caused by the dyeing process as much as possible, and finally ensure the deodorizing performance of the textile and improve the product quality.
FIGURE shows a process flow chart of the dyeing process of the method for dyeing and finishing a deodorizing fiber textile according to an embodiment of the present disclosure.
The present disclosure is further described below in conjunction with specific examples. It should be understood that these examples are only intended to illustrate the present disclosure and not to limit the scope of the present disclosure. In addition, it should be understood that upon reading the present disclosure, those skilled in the art could make various changes or modifications to the present disclosure and these equivalent changes or modifications also fall within the scope defined by the claims of the present disclosure.
A method for dyeing and finishing a deodorizing fiber textile is provided. In the method, sodium carbonate is used as the dyeing alkali agent which is divided into two parts, i.e. a first part, and a second part. The method comprises the following steps:
Firstly, a bleaching pretreatment is carried out below, which comprises the following processes:
PreS1: a bleaching liquid which is a solution comprising 0.1-1 g/L of a degreaser, 0.1-1 g/L of a penetrant and 0.1-1 g/L of a complexing agent is prepared, and the pH value of the bleaching liquid is adjusted to be in a range of 9-9.5 by adding a pH regulator (sodium carbonate and/or hydrogen peroxide, the amount of hydrogen peroxide does not exceed 2 g/L, because an excessive amount of hydrogen peroxide would easily damage the deodorizing group(s) during the bleaching pretreatment).
PreS2: the textile is boiled and bleached in the bleaching liquid at a temperature of 70-80° C. for 5-100 min, obtaining a bleached textile.
PreS3: the bleached textile is subjected to washing with hot water with a temperature of 50-60° C. for 10-20 min firstly, then to washing with clean water at room temperature, and further to washing with a glacial acetic acid aqueous solution (with a concentration of 0.1-1 g/L), and finally to washing with deionized water to wash off the glacial acetic acid, to obtain a textile to be treated.
As shown in FIGURE, the textile to be treated is then subjected to a dyeing and finishing process, which comprises the following steps:
S1: under the condition that a bath liquid is heated to a first temperature, and the textile to be treated is immersed in the bath liquid for a first time. In some embodiments of the present disclosure, the bath liquid is generally a conventional tap water. At this stage, in addition to ensuring a full infiltration of the textile to be treated, it is also necessary to measure the hardness of the bath liquid and optionally add a complexing agent thereto to reduce the hardness of the bath liquid to not greater than 100 ppm according to measurement results, considering the high hardness of tap water in some areas, in order to prevent metal ions in the water from damaging the textile and adversely affecting the dyeing effect.
S2: at the first temperature, a dye, a protective additive and a first part of dyeing alkali agent are added sequentially to the bath liquid at a certain interval, and then the immersing is maintained for a second time.
S3: the bath liquid is heated to a second temperature at a first heating rate, then a second part of dyeing alkali agent is added thereto, and the immersing is maintained for a third time, and then the textile is taken out.
S4, the textile is washed and finished to obtain a dyed and finished textile.
In steps S2 and S3, the dye, the protective additive, the first part of dyeing alkali agent and the second part of dyeing alkali agent were added in batches and in stages at a certain time interval because the fibers with the deodorizing group may be affected by dyeing alkali agent in the dyeing process, resulting in the decline of deodorization performance of the textile. Therefore, the dyeing alkali agent is divided into two parts, and only sodium carbonate (Na2CO3) with weak alkalinity is used as the dyeing alkali agent, and alkali agents with stronger alkalinity are not used. The fiber textile is firstly pretreated with the protective additive at a lower temperature and dyed with color in some degree to form a certain protective layer, and then the textile is fully dyed with the second part of dyeing alkali agent at the second temperature to eliminate the influence of dyeing process on deodorization performance. In this process, the protective additive is to not only promote the coloring of the dye and improve the color fastness, but also protect the background color of deodorizing fiber.
In some embodiments, the first part of the dyeing alkali agent accounts for 25%-40% by weight of the total amount of the dyeing alkali agent, and the second part of the dyeing alkali agent accounts for 60%-75% by weight of the total amount of the dyeing alkali agent. In some embodiments, in step S2, the dye, the protective additive and the first part of dyeing alkali agent are added sequentially to the bath liquid at a certain interval is performed by adding the protective additive at an interval of 10-20 min after adding the dye, and then adding the first part of dyeing alkali agent at an interval of 10-20 min. In some embodiments, the first temperature is in a range of 30-45° C., and the first time is in a range of 5-15 min; the second temperature is in a range of 55-70° C., and the second time is in a range of 5-15 min; the third time is in a range of 50-60 min, and the first heating rate is in a range of 0.5-2° C./min. In some embodiments, the pH value of the bath liquid during the third time period is in a range of 10-10.5.
In some embodiments of the present disclosure, in step S4, the textile is washed and finished as follows: deionized water is added to glacial acetic acid and the pH value of the resulting system is adjusted to be in a range of 4.5-5.5 to obtain a washing solution; the dyed textile is immersed in the washing solution for 10-30 min, and finally the acetic acid on the dyed textile is washed off with deionized water.
Finally, a deodorizing fiber textile is obtained after being dyed and finished according to the method of the disclosure.
In some embodiments, a liquor ratio of the textile to be dyed to the dyeing solution is set to be 1:10 to 1:20, which could be selected according to actual situation. Generally, the liquor ratio of light color system is set to be higher, while the liquor ratio of dark color system is set to be lower.
In some specific embodiments, the protective additive is anhydrous sodium sulfate powder.
In the following examples, added amounts of materials in bleaching liquid/bath are described by concentrations of the materials in the bleaching liquid/bath.
Materials for examples below
Anhydrous sodium sulfate powder (Na2SO4 powder) was a conventional chemical on the market.
Sodium carbonate (Na2CO3) was a conventional chemical on the market.
Glacial acetic acid (acetic acid, CH3COOH) was a conventional chemical on the market.
The degreaser was KF-1206, purchased from Zhejiang Kefeng silicone Co., Ltd., China.
The penetrant was KF-1185D, purchased from Zhejiang Kefeng silicone Co., Ltd., China.
The complexing agent was KF-55, purchased from Zhejiang Kefeng silicone Co., Ltd., China.
A method for dyeing and finishing a deodorizing fiber textile, in which sodium carbonate was used as the dyeing alkali agent, and was divided into two parts, a first part accounting for 1/3, a second part accounting for 2/3, was performed as follows:
Firstly, a bleaching pretreatment was carried out by the following processes:
PreS1: a bleaching liquid which is a solution consisting of 0.5 g/L of the degreaser, 0.5 g/L of the penetrant and 0.5 g/L of the complexing agent was prepared, then 2 g/L of sodium carbonate and 0.5 g/L of hydrogen peroxide were added thereto as a pH regulator, and the pH value of the bleaching liquid was adjusted to be in a range of 9-9.5.
PreS2: the textile was boiled and bleached in the bleaching liquid for 60 min at a temperature of 76±2° C.
PreS3: the textile was washed, firstly with a hot water with a temperature of 60° C. for 10 min, then with a clean water at room temperature, subsequently with a glacial acetic acid aqueous solution (with a concentration of 0.5 g/L), and finally with water to wash off the acetic acid, to obtain a textile to be treated.
Then, the textile to be treated was subjected to the dyeing and finishing as follows:
S1: under the condition that a bath liquid was heated to 40° C., the textile to be treated was immersed in the bath liquid for 10 min.
S2: 0.120% of reactive red 3B S and 0.005% of reactive yellow 3RS dye (wherein the percentage of the dyes is a mass percentage based on the mass of the textile to be dyed) were added to the bath liquid, then 10 g/L of anhydrous sodium sulfate was added at an interval of 15 min, then a first part, i.e., 1/3 of sodium carbonate was added at an interval of 15 min, and then the immersing was maintained for 5 min.
S3: the bath liquid was heated to 60° C. at a heating rate of 1° C./min, then a second part, i.e., the remaining ⅔ of sodium carbonate was added thereto, and then the immersing was maintained for 60 min, during which the pH value of the bath liquid was controlled in a range of 10-10.5, to obtain a dyed textile.
S4, the dyed textile was washed and finished as follows: deionized water was added to glacial acetic acid and the pH value of the resulting system was adjusted to be in a range of 4.5-5.5 to obtain a washing solution, then the dyed textile was immersed in the washing solution for 20 min, and finally the acetic acid on the dyed textile was washed off with deionized water, obtaining a pink textile.
Different from Example 1, the dye used in the method for dyeing and finishing a deodorizing fiber textile in this example was a compound dye of 0.025% of reactive light yellow ED-3G and 0.045% of reactive yellow 3RS (wherein the percentage of the dyes is a mass percentage based on the mass of the textile to be dyed), and the dyeing alkali agent was used in an amount of 5 g/L, and divided into two parts, with a first part accounting for 25% and a second part accounting for 75%; and the method was performed as follows:
Firstly, a bleaching pretreatment was carried out by the following processes:
PreS1: a bleaching liquid which is a solution consisting of 0.1 g/L of the degreaser, 0.1 g/L of the penetrant and 0.1 g/L of the complexing agent was prepared, then 0.5 g/L of sodium carbonate and 2 g/L of hydrogen peroxide were added thereto as a pH regulator, and the pH value of the bleaching liquid was adjusted to be in a range of 9-9.5.
PreS2: the textile was boiled and bleached in the bleaching liquid for 50 min at a temperature of 80° C.
PreS3: the textile was washed, firstly with a hot water with a temperature of 60° C. for 10 min, then with a clean water at room temperature, and finally with a glacial acetic acid aqueous solution (with a concentration of 0.1 g/L), and finally with water to wash off the acetic acid, to obtain a textile to be treated.
Then, the textile to be treated was subjected to the dyeing and finishing as follows:
S1: under the condition that a bath liquid was heated to 30° C., the textile to be treated was immersed in the bath liquid for 5 min.
S2: the dye was added to the bath liquid, then 5 g/L anhydrous sodium sulfate was added at an interval of 10 min, then a first part, i.e., 25% of sodium carbonate was added at an interval of 10 min, and then the immersing was maintained for 5 min.
S3: the bath liquid was heated to 55° C. at a heating rate of 0.5° C./min, then a second part, i.e., the remaining 75% of sodium carbonate was added thereto, and then the immersing was maintained for 50 min, during which the pH value of the bath liquid was controlled in a range of 10-10.5, to obtain a dyed textile.
S4, the dyed textile was washed and finished as follows: deionized water was added to glacial acetic acid and the pH value of the resulting system was adjusted to be in a range of 4.5-5.5 to obtain a washing solution, then the dyed textile was immersed in the washing solution for 10 min, and finally the acetic acid on the dyed textile was washed off with deionized water, obtaining a light yellow textile.
Different from Example 1, the dye used in the method for dyeing and finishing a deodorizing fiber textile in this example was 0.150% of KN-R brilliant blue (wherein the percentage of the dye is a mass percentage based on the mass of the textile to be dyed), and the dyeing alkali agent was used in an amount of 5 g/L, and was divided into two parts, with a first part accounting for 40% and a second part accounting for 60%; and the method was performed as follows:
Firstly, a bleaching pretreatment was carried out by the following processes:
PreS1: a bleaching liquid which is a solution consisting of 1 g/L of the degreaser, 1 g/L of the penetrant and 1 g/L of the complexing agent was prepared, then 2 g/L of sodium carbonate and 1.5 g/L of hydrogen peroxide were added thereto as a pH regulator, and the pH value of the bleaching liquid was adjusted to be in a range of 9-9.5.
PreS2: the textile was boiled and bleached in the bleaching liquid for 100 min at a temperature of 70° C.
PreS3: the textile was washed, firstly with a hot water with a temperature of 50° C. for 20 min, then with a clean water at room temperature, and finally with a glacial acetic acid aqueous solution (with a concentration of 1 g/L), and finally with water to wash off the acetic acid, to obtain a textile to be treated.
Then, the textile to be treated was subjected to the dyeing and finishing as follows:
S1: under the condition that a bath liquid was heated to 45° C., the textile to be treated was immersed in the bath liquid for 10 min, and the KF-55 was added thereto, and the immersing was maintained for 5 min.
S2: the dye was added to the bath liquid, then 10 g/L of anhydrous sodium sulfate was added at an interval of 20 min, then a first part, i.e., 40% of sodium carbonate was added at an interval of 20 min, and then the immersing was maintained for 5 min.
S3: the bath liquid was heated to 70° C. at a heating rate of 2° C./min, then a second part, i.e., the remaining 60% of sodium carbonate was added thereto, and then the immersing was maintained for 50 min, during which the pH value of the bath liquid was controlled in a range of 10-10.5, to obtain a dyed textile.
S4, the dyed textile was washed and finished as follows: deionized water was added to glacial acetic acid and the pH value of the resulting system was adjusted to be in a range of 4.5-5.5 to obtain a washing solution, then the dyed textile was immersed in the washing solution for 30 min, and finally the acetic acid on the dyed textile was washed off with deionized water, obtaining a light blue textile.
Different from Example 1, the dye used in the method for dyeing and finishing a deodorizing fiber textile in this example was a mixture of 0.23% of LB-GD reactive blue, 0.41% of 3BS reactive red and 0.66% of 3RS reactive yellow (wherein the percentage of the dyes is a mass percentage based on the mass of the textile to be dyed), and the dyeing alkali agent was used in an amount of 12 g/L, and was divided into two parts, with a first part accounting for ⅓ and a second part accounting for ⅔; and the method was performed as follows:
Firstly, a bleaching pretreatment was carried out by the following processes:
PreS1: a bleaching liquid which is solution consisting of 0.5 g/L of the degreaser, 0.5 g/L of the penetrant and 0.5 g/L of the complexing agent was prepared, then 2 g/L of sodium carbonate was added thereto as a pH regulator, and the pH value of the bleaching liquid was adjusted to be in a range of 9-9.5.
PreS2: the textile was boiled and bleached in the bleaching liquid for 60 min at a temperature of 76±2° C.
PreS3: the textile was washed, firstly with a hot water with a temperature of 60° C. for 10 min, then with a clean water at room temperature, and finally with a glacial acetic acid aqueous solution (with a concentration of 0.5 g/L), and finally with water to wash off the acetic acid, to obtain a textile to be treated.
Then, the textile to be treated was subjected to the dyeing and finishing as follows:
S1: under the condition that a bath liquid was heated to 40° C., the textile to be treated was immersed in the bath liquid for 10 min, and KF-55 was added thereto to reduce the hardness of the bath liquid to be not greater than 100 ppm, and then the immersing was maintained for 5 min.
S2: the dye was added to the bath liquid, then 30 g/L of anhydrous sodium sulfate was added at an interval of 15 min, then a first part, i.e., ⅓ of sodium carbonate was added at an interval of 15 min, and then the immersing was maintained for 5 min.
S3: the bath liquid was heated to 60° C. at a heating rate of 1° C./min, then a second part, i.e., the remaining ⅔ of sodium carbonate was added thereto, and then the immersing was maintained for 50 min, during which the pH value of the bath liquid was controlled in a range of 10-10.5, to obtain a dyed textile.
S4, the dyed textile was washed and finished as follows: deionized water was added to glacial acetic acid and the pH value of the resulting system was adjusted to be in a range of 4.5-5.5 to obtain a washing solution, then the dyed textile was immersed in the washing solution for 20 min, and finally the acetic acid on the dyed textile was washed off with deionized water, obtaining a brown textile.
Different from Example 4, the dye used in the method for dyeing and finishing a deodorizing fiber textile in this example was a mixture of 0.68% of LB-GD reactive blue, 0.75% of 3BS reactive red and 0.84% of 3RS reactive yellow (wherein the percentage of the dyes is a mass percentage based on the mass of the textile to be dyed), and the dyeing alkali agent was used in an amount of 15 g/L, and the method was performed as follows:
The textile to be treated was subjected to the dyeing and finishing as follows:
S1: under the condition that a bath liquid was heated to 40° C., the textile to be treated was immersed in the bath liquid for 10 min, and KF-55 was added thereto to reduce the hardness of the bath liquid to be not greater than 100 ppm, and then the immersing was maintained for 5 min.
S2: the dye was added to the bath liquid, then 30 g/L of anhydrous sodium sulfate was added at an interval of 15 min, then a first part, i.e., ⅓ of sodium carbonate was added at an interval of 15 min, and then the immersing was maintained for 5 min.
S3: the bath liquid was heated to 60° C. at a heating rate of 1° C./min, then a second part, i.e., the remaining ⅔ of sodium carbonate was added thereto, and then the immersing was maintained for 55 min, during which the pH value of the bath liquid was controlled in a range of 10-10.5, to obtain a dyed textile.
S4, the dyed textile was washed and finished as follows: deionized water was added to glacial acetic acid and the pH value of the resulting system was adjusted to be in a range of 4.5-5.5 to obtain a washing solution, then the dyed textile was immersed in the washing solution for 30 min, and finally the acetic acid on the dyed textile was washed off with deionized water, obtaining a gray textile.
Different from Example 4, the dye used in the method for dyeing and finishing a deodorizing fiber textile in this example was a mixture of 7% of LS-2N reactive black, 0.5% of L-BNN reactive red and 0.2% of L-BNN reactive yellow (wherein the percentage of the dyes is a mass percentage based on the mass of the textile to be dyed), and the dyeing alkali agent was used in an amount of 25 g/L, and the method was performed as follows:
The textile to be treated was subjected to the dyeing and finishing as follows:
S1: under the condition that a bath liquid was heated to 40° C., the textile to be treated was immersed in the bath liquid for 10 min, and KF-55 was added thereto to reduce the hardness of the bath liquid to be not greater than 100 ppm, and then the immersing was maintained for 5 min.
S2: the dye was added to the bath liquid, then 30 g/L of anhydrous sodium sulfate was added at an interval of 15 min, then a first part, i.e., ⅓ of sodium carbonate was added at an interval of 15 min, and then the immersing was maintained for 5 min.
S3: the bath liquid was heated to 60° C. at a heating rate of 1° C./min, then a second part, i.e., the remaining ⅔ of sodium carbonate was added thereto, and then the immersing was maintained for 60 min, during which the pH value of the bath liquid was controlled in a range of 10-10.5, to obtain a dyed textile.
S4, the dyed textile was washed and finished as follows: deionized water was added to glacial acetic acid and the pH value of the resulting system was adjusted to be in a range of 4.5-5.5 to obtain a washing solution, then the dyed textile was immersed in the washing solution for 30 min, and finally the acetic acid on the dyed textile was washed off with deionized water, obtaining a black textile.
The obtained textiles were subjected to property tests as follows:
Materials and Machine
The textiles to be tested had a size of 30 cm×30 cm.
The detergent used was prepared according to AATCC1993 standard detergent WOB phosphorus-free formula specified in Appendix A of GB/T 8629-2001.
The washing machine used was a household automatic spin-drying washing machine with a pulsator diameter of about 34 cm, a dehydration speed of about 1200 r/min and a volume of washing bucket of 60 L, and was a conventional model on the market.
S1.1, 2 g/L of the detergent and tap water were added to a washing machine, with a liquor ratio of 1:30 and a water temperature of 40° C.±3° C.; S1.2, the textile was added to the washing machine, washed for 5 min and then dehydrated;
S1.3, the textile was washed with tap water for 2 min at room temperature, taken out and dehydrated, and then washed with tap water at room temperature for another 2 min and dehydrated.
The above three steps S1.1, S1.2 and S1.3 were conducted as a cycle and counted as one washing. In this test, the deodorization performance of textiles was tested after washing 50 times.
The test for deodorization performance was conducted according to GB/T 33610.1-2019, in which ammonia solution and acetic acid were used as the odor chemical component respectively.
The following samples were used as controls:
Control sample 1, which was prepared by a conventional dyeing process as follows: sodium hydroxide (NaOH) was used as the dyeing alkali agent; the 0.150% of KN-R brilliant blue dye (wherein the percentage of the dye is a mass percentage based on the mass of the textile to be dyed), 5 g/L of dyeing alkali agent, 10 g/L of anhydrous sodium sulfate and deionized water were mixed under stirring to be uniform to obtain a dyeing liquid, and then a textile to be treated was immersed in the dyeing liquid, with a liquor ratio of 1:10; then the dyeing liquid was heated to 80° C. and the immersing was maintained for 60 min; then the textile was taken out and washed, obtaining the control sample 1.
Control sample 2, which was obtained by directly weaving the deodorizing fiber raw material (Mystery of The Sea®—Freshcot® instant deodorization fiber, purchased from Qingdao Niximi Biotechnology Co., Ltd., China) into a 30 cm×30 cm textile.
The results are shown in Table 1.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202210971203. X | Aug 2022 | CN | national |
