Dyeing process of high-light-resistance soybean protein fiber fabric

Abstract

The invention provides a dyeing process of a high-light-resistance soybean protein fiber fabric, which is characterized in that for a fabric made of soybean protein fibers, in the dyeing process flow, KCN CF type reactive dye is selected, a staged heating process is adopted, salt and alkali are added in a low-temperature stage, and then heating and heat preservation are performed; wherein the temperature in the low-temperature stage is controlled to be 30-45 DEG C. By adjusting the pretreatment process of the soybean protein fibers, the soybean protein fibers have better whiteness, so that subsequent dyeing processing treatment is facilitated; a specific reactive dye and a specific dyeing process are adopted for dyeing so as to achieve the effect of uniform dyeing. A specific after-finishing process is adopted, so that the performance of the fabric is improved.

Description

Technical Field

[0001] The invention relates to the field of dyeing and weaving, and in particular to a dyeing process for highly light-resistant soybean protein fiber fabrics. Background Art

[0002] In recent years, people have become increasingly concerned about environmental protection. Green and low-carbon development has become a global trend. Countries and organizations around the world are actively integrating the development of new materials with green and low-carbon economies. Soy protein fiber, a regenerated plant protein fiber, is highly regenerative. Its low cost and high added value make it a truly green product for the new century.

[0003] The main raw material of soy protein fiber is soybeans from nature, which are relatively abundant resources, and the production and processing process is relatively environmentally friendly, non-toxic and harmless, and will not pollute the environment. Therefore, it is known as the "green fiber of the new century."

[0004] Soy protein fiber monofilament is thin and has a low specific gravity. It has a soft feel, a light texture, and a cashmere-like feel. The fabric has a certain smoothness, a silk-like luster, and excellent drape. It also has moisture absorption, warmth retention, and antibacterial properties. The fabric is extremely comfortable to wear and is a functional fiber for making high-value-added clothing and home textiles.

[0005] Soy protein fiber uses soybean waste meal after oil extraction as raw material. The globulin in it is purified using biotechnology. After a series of treatments, it is supplemented with polymers such as hydroxyl and amino groups to form a protein spinning solution of a certain concentration. It is then wet-spun, curled, heat-set, and cut to produce the fiber.

[0006] Soy protein fiber is primarily composed of soy protein and polyvinyl alcohol. Its natural color is light yellow and difficult to completely remove during pre-treatment, making it difficult to dye the fabric into lighter colors. It can be dyed in both acidic and alkaline conditions, has good acid resistance, but poor heat resistance. It will yellow and discolor when exposed to temperatures exceeding 120°C, so careful temperature control is required during dyeing and post-treatment.

[0007] In the actual dyeing process, it was found that soybean fiber fabrics are prone to uneven dyeing and poor sunlight fastness. Summary of the Invention

[0008] The present invention aims to overcome the above-mentioned defects, screen out the dye that is most suitable for dyeing soybean protein fiber, and perform different screening processes according to the differences in dye types. In addition, by adjusting the pre-treatment process, dyeing process and post-treatment process of soybean protein fiber, the problems of uneven dyeing and poor sunlight fastness are solved, meeting the needs of dyeing fabrics with light colors, smooth colors, bright colors and good sunlight fastness.

[0009] The present invention provides a dyeing process for soybean protein fiber fabrics with high light resistance, which is characterized in that: for fabrics made of soybean protein fiber, KCN CF type reactive dyes are selected in the dyeing process, a staged heating process is adopted, and salt and alkali are added in the low temperature stage before heating and heat preservation;

[0010] Among them, the temperature in the low temperature stage is controlled at 30-45℃.

[0011] Furthermore, the dyeing process provided by the present invention is also characterized in that:

[0012] The above-mentioned insulation refers to the temperature being controlled at 60-70°C.

[0013] Furthermore, the dyeing process provided by the present invention is also characterized in that:

[0014] The dyeing process is as follows:

[0015] S1.40℃ add salt when dyeing;

[0016] S2. Add base at 15 min;

[0017] S3. Raise the temperature to 60-70℃ and keep warm for 55-65 minutes.

[0018] Furthermore, the dyeing process provided by the present invention is also characterized in that:

[0019] The KCN CF type reactive dye is selected from KCN Yellow CF-COM, KCN Red CF-4BL, KCN Navy CF-COM or the like.

[0020] In addition, the present invention also provides a dyeing process for highly light-resistant soybean protein fiber fabrics, which is characterized in that: for fabrics made of soybean protein fiber, KYE CN type reactive dyes are selected in the dyeing process, and the temperature is kept at 85-95°C for 55-65 minutes.

[0021] Furthermore, the dyeing process is characterized in that:

[0022] The KYE CN type reactive dye is selected from KYR Yellow CN-EX, KYR Red CN-3B, KYR Blue CN-MG or the like.

[0023] Furthermore, the dyeing process is characterized in that:

[0024] An auxiliary agent, Kayaku Buffer NFP or the like, is also added.

[0025] In addition, the above two dyeing processes are also characterized in that:

[0026] Before the dyeing process, the fabric is subjected to a scouring bleaching + reduction re-bleaching treatment.

[0027] In addition, the above two dyeing processes are also characterized in that:

[0028] After dyeing, the fabric is treated with anti-UV auxiliaries.

[0029] The above finishing process is: 35-40℃, heat preservation for 10-20min. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 , comparative experimental results of KCN CF type reactive dye dyeing process;

[0031] Figure 2 , Comparative test results for KYE CN type reactive dyeing auxiliaries. DETAILED DESCRIPTION

[0032] The present invention is susceptible to various modifications and embodiments, and thus specific embodiments are illustrated and described in the accompanying drawings. However, this is not intended to limit the present invention to specific embodiments, but rather should be understood to encompass all modifications, equivalents, and even substitutes that fall within the spirit and technical scope of the present invention.

[0033] The dyeing process of the highly light-resistant soybean protein fiber fabric of this embodiment adopts the following two schemes:

[0034] Option 1: Use KCN CF reactive dyes and adopt a staged heating process. Add salt and alkali in the low-temperature stage before heating and holding. The low-temperature stage is controlled at 30-45°C. Holding temperature means controlling the temperature at 60-70°C.

[0035] The dyeing process is as follows:

[0036] S1.30-45℃ before dyeing and adding salt;

[0037] S2. Add base at 10-15 min;

[0038] S3. Raise the temperature to 60-70℃ and keep warm for 55-65 minutes.

[0039] Option 2: Use KYE CN reactive dyes and keep them at 85-95°C for 55-65 minutes. You can also add auxiliary agents such as Kayaku Buffer NFP, Kayasliele pH 509, or their equivalents.

[0040] To improve the dyeing effect, for both processes, the fabric undergoes a scouring and bleaching treatment followed by a reduction and re-bleaching treatment before dyeing. After dyeing, the fabric is treated with an anti-UV additive and then subjected to a post-finishing treatment at 35-40°C for 10-20 minutes.

[0041] The best experimental examples are as follows:

[0042] S1. Dyeing materials: 40S soy protein fiber 50%, Indian organic cotton 50%;

[0043] S2. Grey fabric pre-treatment

[0044] Soy protein fiber is beige in color and is processed through a process of refining, bleaching and reduction bleaching.

[0045] drug dose Hydrogen peroxide 30% 8.0% owf soda ash 2g / L KayatectorE 1g / L SunmoralSM-18EZ 2g / L Reduction and re-bleaching: hydrosulfite 3g / L soda ash 2g / L

[0046] S3. Dyeing of soybean protein fiber

[0047] Scheme 1. Use KCN CF type reactive dyes for dyeing. For example, in this embodiment, the three primary colors of KCN YellowCF-COM, KCN Red CF-4BL, and KCN Navy CF-COM can be used for color synthesis, and the following process is adopted:

[0048] When adding salt at 40℃, you can usually use Glauber's salt - add alkali for 15 minutes - keep warm at 60℃ for 60 minutes, and then wash with water, neutralize with acid, soap and dry.

[0049] Scheme 2: KYE CN reactive dyes, KYR Ellow CN-EX, KYR Red CN-3B, and KYR Blue CN-MG primary colors, are dyed at 95°C for 60 minutes, followed by high-temperature soaping, washing, and drying. The auxiliary agent Kayaku Buffer NFP is used in the process.

[0050] The processes not specifically described above, such as water washing, acid neutralization, soap washing, etc., all adopt traditional processes in this field and do not need to be customized.

[0051] S4. Use the anti-UV additive SHINEGUARD to perform post-finishing treatment on the fabric. A possible post-finishing process is: 40℃*20min - dehydration - drying.

[0052] Comparative Example 1: Traditional scouring and bleaching process before dyeing

[0053] drug dose Hydrogen peroxide 30% 8.0% owf soda ash 2g / L KayatectorE 1g / L SunmoralSM-18EZ 2g / L

[0054] The whiteness of the original soybean protein fiber and organic cotton blended fabric (hereinafter referred to as fabric) was 12.3.

[0055] After adopting the traditional refining and bleaching process (Comparative Example 1), the whiteness of the fabric is 21.7.

[0056] After scouring, bleaching and re-bleaching (the best experimental example), the fabric whiteness reached 27.5.

[0057] Obviously, the best experimental solution can make the fabric achieve better whiteness, which is beneficial to subsequent dyeing and finishing.

[0058] Comparative Example 2. Using other dyes

[0059] Direct dyes: Direct Red 80, Direct Blue 86, and Direct Yellow 12 are available, but are not limited to these dyes. These dyes have a high dye uptake rate, but can result in uneven dyeing, uneven fabrics, and poor wash fastness.

[0060] Disperse dyes: Examples include but are not limited to Disperse Red 60, Disperse Blue 56, and Disperse Yellow 42. These dyes offer good color fastness, but may result in uneven dyeing and uneven fabrics. Acid dyes: Examples include but are not limited to Acid Red 18, Acid Blue 113, and Acid Yellow 36. These dyes offer good color fastness, but may result in uneven dyeing and uneven fabrics.

[0061] Comparative Example 3. Adjusting the dyeing process for KCN CF type reactive dyes

[0062] Example 3-1. Dyeing at 60℃ - add alkali after 15 minutes - maintain temperature for 60 minutes;

[0063] Example 3-2. Add Glauber's Salt to the dye at 40°C - after 20 minutes, start heating to 60°C - add alkali and keep warm for 60 minutes;

[0064] Example 3-3. Add Glauber's salt to dye at 40℃ - keep warm at 80℃ for 10 minutes - cool down to 60℃, add alkali and keep warm for 60 minutes.

[0065] The comparison results are as follows Figure 1 As shown in the experimental results,

[0066] After adding the mirabilite additive, the dyeing properties of the best experimental example, example 3-2, and example 3-3 were better than that of example 3-1;

[0067] Comparative Example 3-2, Example 3-3, and the best experimental example show that the dyeing temperature is a variable that can affect the dyeing effect. Since Example 3-3 was dyed at 80°C, it can be observed that the dyeing uniformity of Example 3-3, Example 3-2, and the best experimental example is poor.

[0068] It can be found from comparative example 3-2 and the best experimental example that the timing of adding alkali is different. Obviously, the timing of adding alkali is also a variable that can affect the dyeing effect. The dyeing property, levelness and smoothness of the fabric surface of the best experimental example sample are better than those of the other three groups of samples.

[0069] Therefore, when KCN CF type reactive dyes are selected, the process of the best experimental example is adopted, and the fabric is dyed after water washing, acid neutralization, soap washing and drying. The color is bright, the dyeing is uniform and there is no color spot, the cloth surface is smooth, and the dyeing effect is the best.

[0070] Comparative Example 4. Different auxiliaries were selected for the KYE CN type reactive dye solution.

[0071] Example 4-1.Kayaku BufferP-7;

[0072] Example 4-2.Kayasliele pH509;

[0073] Example 4-3.KayaslieleAC-608;

[0074] The results are as follows Figure 2 As shown in the figure, the experimental results show that the group with Kayasliele pH509 showed the best level dyeing, followed by Kayaku Buffer NFP, and the other two auxiliaries showed average level dyeing effects (but Kayasliele pH509 has been discontinued); and after the above dye screening, the three primary colors of KYRYellow CN-EX, KYR Red CN-3B, and KYR Blue CN-MG were finally determined. The dyeing process was kept at 95℃ for 60 minutes, and Kayaku Buffer NFP was added to adjust the auxiliaries. After high-temperature soaping, washing, and drying, the fabric showed bright color, good level dyeing, no color flowers, and no unevenness.

[0075] Comparative Example 5. UV additive treatment process

[0076] The results are shown in the following table:

[0077]

[0078] As can be seen from the above, anti-UV additives can effectively improve the sunlight fastness of fabrics. One possible additive is the anti-UV additive SHINEGUARD. After the fabrics were treated with anti-UV additives, their sunlight fastness was found to increase by 0.5-1 level.

[0079] Among them, after dyeing with KYR CN type reactive dyes and adding anti-UV auxiliaries, the sunlight fastness of the fabric can reach level 4 or even level 4.5, with bright color, smooth fabric surface and good dyeing uniformity, meeting the requirements of good level dyeing and good sunlight fastness.

[0080] Functions and effects of the embodiment:

[0081] This example adjusts the soy protein fiber pretreatment process to achieve better whiteness for subsequent dyeing. A specific reactive dye and dyeing process are used to achieve uniform dyeing. A specific post-finishing process is used to improve the fabric's sunlight fastness.

[0082] While the above description focuses on the embodiments, this is merely illustrative and does not limit the present invention. Persons skilled in the art will readily appreciate that various modifications and applications not illustrated above are possible without departing from the essential characteristics of the embodiments. For example, the various components specifically illustrated in the embodiments may be implemented with modifications. Furthermore, any differences associated with such modifications and applications should be construed as being within the scope of the present invention as defined in the appended claims.

Claims

1. A dyeing process for highly light-resistant soybean protein fiber fabric, characterized by: For fabrics made of soy protein fiber, KCN CF type reactive dyes are selected in the dyeing process, and a staged heating process is adopted. Salt and alkali are added at the low temperature stage before heating and keeping warm. Among them, the temperature in the low temperature stage is controlled at 30-45℃.

2. The dyeing process according to claim 1, wherein: The insulation refers to controlling the temperature at 60-70°C.

3. The dyeing process according to claim 1, wherein: The dyeing process is as follows: S1.30-45℃ before dyeing and adding salt; S2. Add base at 10-15 min; S3. Raise the temperature to 60-70℃ and keep warm for 55-65 minutes.

4. The dyeing process according to claim 1, wherein: The KCN CF type reactive dye is selected from KCN Yellow CF-COM, KCN Red CF-4BL, KCN Navy CF-COM or the like.

5. A dyeing process for highly light-resistant soybean protein fiber fabric, characterized by: For fabrics made of soybean protein fiber, KYE CN type reactive dyes are selected in the dyeing process, and the temperature is kept at 85-95℃ for 55-65 minutes.

6. The dyeing process according to claim 5, wherein: The KYE CN type reactive dye is selected from KYRYellow CN-EX, KYR Red CN-3B, KYR Blue CN-MG or the like.

7. The dyeing process according to claim 5, wherein: An auxiliary agent selected from Kayasliele pH509, KayakuBufferNFP or the like is also added.

8. The dyeing process according to any one of claims 1 to 7, wherein: Before the dyeing process, the fabric is subjected to a scouring bleaching + reduction re-bleaching treatment.

9. The dyeing process according to any one of claims 1 to 7, wherein: After dyeing, the fabric is treated with anti-UV auxiliaries.

10. The dyeing process according to claim 9, wherein: The post-finishing process is: 35-40°C, heat preservation for 10-20 minutes.

Images