Low-temperature dyeing process for camel hair
Through the low-temperature dyeing method that combines reversible dyes with bio-based auxiliaries, the problem of easy fading of camel hair after dyeing is solved, a high color fastness and environmentally friendly camel hair dyeing process is achieved, and the dyeing quality and efficiency are improved.
Patent Information
- Application Number
- CN202511023293.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-24
- Publication Date
- 2025-10-14
AI Technical Summary
Camel hair easily fades after dyeing due to washing and exposure to light, resulting in poor color fastness and unable to meet consumers' demand for diverse colors and styles.
The low-temperature dyeing method uses a combination of reversible dyes and bio-based auxiliaries, including steps such as cleaning, soaking, stirring, fixing, and drying. Biocatalysts are used to treat waste dye liquor and optimize the dyeing process to improve color fastness and environmental friendliness.
It improves the color fastness of camel hair dyed products, ensures durability under conditions such as washing, friction and light, reduces environmental pollution, simplifies the production process, and improves dyeing quality and efficiency.
Smart Images
Figure CN120776598A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of dye and textile processing technology, in particular to a low-temperature dyeing process of camel hair. BACKGROUND
[0002] Camel hair is a special animal fiber produced on the body of a camel, which has the characteristics of not being prone to felting, smooth surface, soft and fluffy hand feeling, good warmth retention, etc. However, the fiber morphology structure is not uniform, the root is thin and the tip is thick, which leads to poor cohesion between fibers during spinning, poor felting of textiles, and easy deformation of clothing products after wearing. The quality of white is the highest but the quantity is very small, yellow and apricot yellow are the second, apricot yellow is the most common, and the deeper the color, the worse the quality. It is mainly used for making high-grade outerwear fabrics, blankets, carpets, etc. Dyeing camel hair is mainly because camel hair itself is mostly brown yellow and other darker colors, and the processed textiles have monotonous color and single variety. Through dyeing, the products can present colorful colors to meet the needs of different consumers for color and style and meet the increasingly diversified aesthetic needs of consumers.
[0003] However, the dyed camel hair is prone to fading under the conditions of washing and light. SUMMARY
[0004] The present application provides a low-temperature dyeing method of camel hair, which solves the problem that dyed camel hair is prone to fading under the conditions of washing and light.
[0005] To achieve the above purpose, the present application is implemented by the following technical scheme: a low-temperature dyeing method of camel hair, comprising the following steps:
[0006] Place the camel hair fiber in deionized water for cleaning, and dry the cleaned camel hair fiber at room temperature;
[0007] Prepare a dyeing solution, which comprises 1-5 g / L of reversible dye, 5-10 g / L of bio-based auxiliary agent and deionized water, and the pH value of the dyeing solution is 6-7;
[0008] Soak the camel hair fiber in the dyeing solution, and then stir the dyeing solution;
[0009] Perform fixation treatment on the camel hair fiber after stirring, reduce the temperature of the dyeing solution, add a fixing agent and stir;
[0010] Finally, wash the camel hair fiber after adding the fixing agent and stirring with deionized water until the water is transparent, and then dry.
[0011] Preferably, when cleaning in the deionized water, the temperature of the deionized water is 30℃, the cleaning time is 30 minutes, and the camel hair fiber is dried to a moisture content of not more than 10%.
[0012] Preferably, the reversible dye includes acid dyes or vat dyes, the bio-based auxiliary agent uses sodium alginate, and the molecular weight of sodium alginate ranges from 50,000 to 200,000 g / mol.
[0013] Preferably, when the dyeing solution is stirred, the dyeing temperature is 30-40℃, the stirring speed is 60-80 rpm, and the duration of dyeing is 30-60 minutes.
[0014] Preferably, the soaking time is 30-45 minutes, when stirred, the dyeing temperature is 30-40℃, the stirring speed is 60-80 rpm, and the duration is 30-60 minutes.
[0015] Preferably, after the dyeing solution temperature is reduced to 20-25℃, a fixing agent is added, and the fixing agent is stirred for 10-15 minutes.
[0016] Preferably, when the deionized water is used for cleaning, the conductivity of the deionized water is less than 0.1 μS / cm.
[0017] Preferably, the drying includes the following steps:
[0018] The camel hair fibers that have been cleaned are removed by a centrifuge;
[0019] The camel hair fibers that have been removed are laid flat on a drying rack, and water is evaporated by using an air circulation device;
[0020] The camel hair fibers are turned over periodically during the evaporation process, and after the process is completed, the dried camel hair fibers are placed in a sealed and dry container.
[0021] The method further includes the following steps:
[0022] The finished dyeing solution that has been dyed is collected, and a biological catalyst is added;
[0023] The dyeing solution to which the biological catalyst has been added is stirred uniformly, and is placed in a cool place for 36-48 hours of reaction;
[0024] After the reaction is completed, the reacted dyeing solution is filtered, and then the filtered dyeing solution is purified.
[0025] The biological catalyst includes one or more combinations of amylase, protease, and cellulase, and the concentration of the biological catalyst is 1-5 g / L.
[0026] The present application provides a camel hair low-temperature dyeing method. The method has the following beneficial effects:
[0027] 1、The present application improves the color fastness of cashmere dyeing products by using reversible dyes combined with bio-based auxiliaries, ensuring durability under different conditions such as washing, rubbing and light.
[0028] 2、The present application reduces environmental pollution during the dyeing process by using reversible dyes and bio-based auxiliaries, and introduces a biological catalyst to treat waste dyeing liquid, promotes the renewable use of resources, realizes the protection of environmental characteristics, and effectively reduces wastewater discharge.
[0029] 3、The present application optimizes the dyeing and fixing operation process, combines the reduction of dyeing liquid temperature and the addition of fixing agent, simplifies the traditional dyeing process, realizes the efficient production process, and improves the dyeing quality and efficiency.
[0030] 4、The present application removes moisture by centrifuge and promotes drying of fibers using air circulation equipment, combined with regular measures to turn the fibers, ensuring uniform drying of cashmere fibers, and realizing the effect of reducing the risk of mold and deformation. BRIEF DESCRIPTION OF DRAWINGS
[0031] Figure 1 The method flowchart of the present application is a low-temperature dyeing method for cashmere. DETAILED DESCRIPTION
[0032] In order to better understand the above technical solutions, the technical solutions of the present application will be described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0033] Please refer to the drawings Figure 1 The present application provides a low-temperature dyeing method for cashmere, comprising the following steps:
[0034] Place the cashmere fibers in deionized water and dry the washed cashmere fibers at room temperature;
[0035] Prepare the dyeing liquid, which includes 1-5 g / L reversible dyes, 5-10 g / L bio-based auxiliaries and deionized water, and the pH value of the dyeing liquid is 6-7;
[0036] Soak the cashmere fibers in the dyeing liquid, and then stir the dyeing liquid;
[0037] The cashmere fibers after stirring are subjected to fixing treatment, the temperature of the dyeing liquid is reduced and the fixing agent is added and stirred;
[0038] Finally, the camel hair fiber is washed with deionized water after adding the fixing agent and stirring until the water is transparent, and finally dried.
[0039] Specifically, washing camel hair fibers in deionized water can effectively remove dirt and impurities on the fiber surface, thereby improving the uniformity and color fastness of subsequent dyeing. After washing, the camel hair fibers are placed at room temperature to dry, which helps the natural evaporation of moisture inside the fibers, reduces the moisture content, and improves the dyeing effect.
[0040] The dye solution contains 1-5g / L of reversible dye, 5-10g / L of bio-based auxiliaries, and deionized water. This ensures good stability at a pH of 6-7. The reversible dye can effectively bond with the fiber at low temperatures, while the bio-based auxiliaries help improve the permeability of the dye.
[0041] Soaking camel hair fiber in dye solution and stirring it can ensure that the dye is fully in contact with the fiber, allowing the dye to evenly penetrate into the fiber and achieve high-quality dyeing effect;
[0042] The camel hair fiber is fixed after stirring. By lowering the temperature of the dye solution and adding a fixing agent, the combination of dye and fiber is strengthened. The optimization of the duration of the fixing process can maximize the color fastness.
[0043] Finally, the camel hair fibers, after adding the fixing agent and stirring, are washed with deionized water to remove the unbound residual dye and fixing agent until the water is transparent, thereby ensuring the quality of the dyed product. At the same time, it ensures that the drying process of the final product has good ventilation conditions, effectively avoiding deformation and damage of the fiber.
[0044] By using a combination of reversible dyes and bio-based auxiliaries, effective dyeing of camel hair fibers at low temperatures can be achieved. Reversible dyes combine with the active sites of camel hair fibers during the dyeing process to ensure good dyeing effects, while bio-based auxiliaries can enhance the permeability and adhesion of dyes, improve dyeing uniformity and color fastness. In the color fixing process, the addition of fixing agents combines with the dyes to form stable chemical bonds, making the dyed camel hair fibers less likely to fade during use.
[0045] When washing in deionized water, the temperature of the deionized water is 30° C., and the washing is carried out for 30 minutes. The camel hair fiber is then dried until the moisture content is no more than 10%.
[0046] Specifically, when washing in deionized water, it helps to effectively remove dirt and impurities on the surface of camel hair fibers, ensuring that the dye can penetrate evenly during the subsequent dyeing process. At the same time, drying the camel hair fibers to a moisture content of no more than 10% can reduce the uneven dyeing caused by excessive moisture during the dyeing process. This process ensures that the fibers are fully prepared, thereby improving the dyeing effect and color fastness.
[0047] The reversible dye includes an acid dye or a vat dye, the bio-based auxiliary agent is sodium alginate, and the molecular weight of the sodium alginate ranges from 50,000 to 200,000 g / mol.
[0048] Specifically, the reversible dye is selected as an acid dye or a vat dye, which can effectively bind with the cashmere fiber in a low-temperature environment, ensuring the stability and uniformity of the dyeing effect, and the bio-based auxiliary agent is selected as sodium alginate, which can effectively enhance the interaction between the dye and the fiber, improve the permeability and adhesion of the dyeing, ensure the environmental protection characteristics of the dyeing process, and improve the color fastness and quality of the dyeing product.
[0049] When the dyeing solution is stirred, the dyeing temperature is 30-40℃, the stirring speed is 60-80 rpm, and the dyeing duration is 30-60 minutes.
[0050] Specifically, stirring the dyeing solution can ensure that the dye is uniformly dispersed in the dyeing solution and fully penetrates into the cashmere fiber, optimizing the uniformity and depth of the dyeing, and improving the stability of the dyeing effect. By controlling the temperature and stirring speed, the phenomenon of uneven dyeing caused by dye precipitation or aggregation can be effectively prevented, thereby improving the color fastness of the final product.
[0051] The soaking time is 30-45 minutes, the dyeing temperature is 30-40℃, the stirring speed is 60-80 rpm, and the duration is 30-60 minutes.
[0052] Specifically, during the dyeing process, soaking helps to ensure that the dye can fully penetrate into the cashmere fiber, achieving uniform dyeing. Meanwhile, stirring after soaking ensures uniform distribution of the dye in the liquid, further promoting the interaction between the dye and the fiber, optimizing the dyeing effect and color fastness, and effectively improving the stability of the dyeing process to ensure the consistency of the dyeing quality.
[0053] After reducing the temperature of the dyeing solution to 20-25℃, a fixing agent is added, and the fixing agent is stirred for 10-15 minutes.
[0054] Specifically, after reducing the temperature of the dyeing solution to 20-25℃, adding the fixing agent and stirring for 10-15 minutes can effectively promote the combination of the fixing agent with the dye and the fiber, improve the color fastness, and by controlling the temperature reduction, the migration rate of the dye can be reduced, making the fixing agent better play its fixing role, ensuring the color stability and durability of the dyeing product. Stirring optimizes the dispersibility and uniformity of the fixing agent, thereby further strengthening the combination effect with the fiber and improving the overall quality of the finished product.
[0055] When washing with deionized water, the conductivity of the deionized water is less than 0.1 μS / cm.
[0056] Specifically, when washing the cashmere fibers with deionized water, the conductivity of the deionized water is required to be less than 0.1 μS / cm, which ensures that the deionized water can effectively remove the ionic contaminants and other impurities on the surface of the fibers, prevent interference with the adsorption of dyes in subsequent dyeing, and better maintain the physical and chemical properties of the cashmere fibers during the washing process, thereby improving the uniformity and fastness of the final dyeing effect.
[0057] The drying includes the following steps:
[0058] The washed cashmere fibers are placed in a centrifugal machine to remove the water;
[0059] The dried cashmere fibers are placed in a sealed and dry container.
[0060] The cashmere fibers are periodically turned over during the evaporation process, and after the end, the dried cashmere fibers are placed in a sealed and dry container.
[0061] Specifically, the washed cashmere fibers are placed in a centrifugal machine to remove the water by centrifugal action, which can effectively reduce the residual water in the fibers and shorten the subsequent drying time. The dried cashmere fibers are placed on a drying rack and an air circulation device is used to promote water evaporation, increase the surface area of the fibers, and make the cashmere fibers more easily contact with the surrounding air, thereby improving the rate of water evaporation. The cashmere fibers are periodically turned over during the evaporation process to ensure that each part is evenly exposed to the air, preventing some fibers from being wet due to uneven water evaporation. Finally, the dried cashmere fibers are placed in a sealed and dry container to prevent moisture absorption and external contamination, maintain a dry state, ensure the stability of the fibers during storage, avoid the impact of moisture on the product, and ensure the uniformity of the cashmere fibers through the above steps, effectively remove the water, reduce the risk of mold growth, and improve the storage stability of the cashmere fibers.
[0062] The method further includes the following steps:
[0063] The dyed solution is collected and a biological catalyst is added;
[0064] The dyed solution with the added biological catalyst is stirred uniformly and placed in a cool place for 36-48 hours of reaction;
[0065] After the reaction is completed, the reacted dyed solution is filtered, and then the filtered dyed solution is purified.
[0066] Specifically, first, the dyeing solution that has been dyed is collected, and a biological catalyst is added. The biological catalyst can specifically decompose waste dye molecules through biochemical reactions, thereby effectively removing harmful substances in the dyeing solution. Then, the dyeing solution with the added biological catalyst is stirred uniformly and placed in a cool place for 36-48 hours. During the reaction time, the biological catalyst begins to react with the waste dye, thereby achieving effective treatment of the dyeing solution. After the reaction is complete, the reacted dyeing solution is filtered to remove solid residues and unreacted dyes. Subsequently, purification treatment is performed to ensure that the dyeing solution meets the standard for renewable use, thereby effectively reducing waste dyes in the dyeing solution, improving resource recycling rate, and reducing environmental pollution.
[0067] The biological catalyst includes one or more combinations of amylase, protease, and cellulase, and the concentration of the biological catalyst is 1-5 g / L.
[0068] Specifically, the biological catalyst includes amylase, protease, and cellulase, which have specific catalytic capabilities and can effectively degrade different types of waste dyes. Amylase can decompose starch substances, protease can degrade protein-based dyes, and cellulase is suitable for degrading cellulose substances. By combining these enzymes, effective treatment of multiple waste dyes in the same reaction system can be achieved, increasing the broad applicability of the treatment process and significantly optimizing the treatment process of used dyeing solution, thereby improving resource recovery rate and renewability.
[0069] Example 1
[0070] A low-temperature dyeing method for camel hair, comprising the following steps:
[0071] The camel hair fibers are placed in deionized water at a temperature of 30°C for cleaning, and the cleaning time is 30 minutes. After cleaning, the camel hair fibers are placed in a room temperature to dry until the moisture content is not higher than 10%.
[0072] A dyeing solution is prepared, including 1 g / L of reversible dyes, which are acid dyes, 5 g / L of biological-based auxiliaries, which are sodium alginate with a molecular weight of 50,000 g / mol, and deionized water, so that the pH value of the dyeing solution is 6.
[0073] The cleaned camel hair fibers are soaked in the dyeing solution and stirred, the dyeing temperature is 30°C, the stirring speed is 60 rpm, the soaking time is 30 minutes, and the stirring duration is 30 minutes.
[0074] The temperature of the dyeing solution is reduced to 20°C, a dye fixing agent is added and stirred for 10 minutes.
[0075] Finally, the treated camel hair fibers are washed with deionized water until the water is transparent.
[0076] The washed pashmina fibers are placed in a centrifuge to remove water, then laid flat on a drying rack, water evaporation is promoted using air circulation equipment, and the fibers are periodically turned over, and finally the dried fibers are placed in a sealed and dry container.
[0077] The dyebath after dyeing is collected, a biocatalyst is added, the biocatalyst includes a combination of amylase, protease and cellulase, the biocatalyst concentration is 1 g / L, it is stirred uniformly, and it is placed in a cool place to react for 40 hours, after the reaction is completed, the dyebath after reaction is filtered and purified to ensure the standard of renewable use.
[0078] Example 2
[0079] A low-temperature dyeing method of pashmina, comprising the following steps:
[0080] The pashmina fibers are washed in deionized water at a temperature of 30°C for 30 minutes, and then dried at room temperature until the moisture content is not higher than 10%.
[0081] A dyebath is prepared, including reversible dyes with a concentration of 2.5 g / L, the reversible dyes are acid dyes, 7 g / L of bio-based auxiliary, the bio-based auxiliary is sodium alginate, the molecular weight of the sodium alginate is 100,000 g / mol, and deionized water, so that the pH value of the dyebath is 6.5.
[0082] The washed pashmina fibers are soaked in the dyebath and stirred, the dyeing temperature is 32°C, the stirring speed is 70 rpm, the soaking time is 35 minutes, and the stirring duration is 40 minutes.
[0083] The temperature of the dyebath is reduced to 22°C, a fixing agent is added and stirred for 12 minutes.
[0084] Finally, the treated pashmina fibers are washed with deionized water until the water is transparent.
[0085] The washed pashmina fibers are placed in a centrifuge to remove water, then laid flat on a drying rack, water evaporation is promoted using air circulation equipment, and the fibers are periodically turned over, and finally the dried fibers are placed in a sealed and dry container.
[0086] The dyebath after dyeing is collected, a biocatalyst is added, the biocatalyst includes a combination of amylase, protease and cellulase, the biocatalyst concentration is 3 g / L, it is stirred uniformly, and it is placed in a cool place to react for 42 hours, after the reaction is completed, the dyebath after reaction is filtered and purified to ensure the standard of renewable use.
[0087] Example 3
[0088] A method for low-temperature dyeing of pashmina, comprising the steps of:
[0089] The pashmina fibers are placed in deionized water at a temperature of 30°C for cleaning for a period of 30 minutes. After cleaning, the pashmina fibers are left to dry at room temperature until the moisture content is not more than 10%.
[0090] A dyeing solution is prepared comprising a reversible dye at a concentration of 5 g / L, the reversible dye being an acid dye, a bio-based auxiliary at a concentration of 9 g / L, the bio-based auxiliary being sodium alginate having a molecular weight of 200,000 g / mol, and deionized water, such that the pH of the dyeing solution is 7.
[0091] The cleaned pashmina fibers are immersed in the dyeing solution and agitated, the dyeing temperature being 35°C, the agitation speed being 80 rpm, the immersion time being 40 minutes, and the duration of agitation being 50 minutes.
[0092] The temperature of the dyeing solution is reduced to 25°C, a fixing agent is added and agitated for 15 minutes.
[0093] Finally, the treated pashmina fibers are washed with deionized water until the wash water is clear.
[0094] The cleaned pashmina fibers are placed in a centrifuge to remove water, then laid flat on a drying rack, water evaporation is facilitated using air circulation equipment, and the fibers are periodically turned over, and finally the dried fibers are placed in a sealed and dry container.
[0095] The dyeing solution after dyeing is collected, a bio-catalyst is added, the bio-catalyst comprising a combination of amylase, protease and cellulase, the bio-catalyst having a concentration of 5 g / L, it is stirred until uniform and left to react in the shade for 36 hours, after the reaction is complete, the reacted dyeing solution is filtered and purified to ensure the standard for renewable use.
[0096] Comparative Example 1
[0097] The difference with Example 1 is the absence of a bio-based auxiliary.
[0098] Comparative Example 2
[0099] The difference with Example 1 is the absence of the addition of a bio-catalyst.
[0100] Comparative Example 3
[0101] The difference with Example 1 is that the deionized water is turbid during the deionized water treatment.
[0102] Comparative Example 4
[0103] The difference with Example 1 is that the reversible dye is replaced by a direct dye.
[0104] Performance test of dyed camel hair:
[0105] Test sample: dyed camel hair of each example and comparative example above.
[0106] Washing fastness test
[0107] Test method: the sample was soaked in washing solution at 40℃ for 30 minutes, then washed and compared with grey scale.
[0108] According to GB / T3921-2013 "Determination of washing fastness of textiles".
[0109] Rubbing fastness test
[0110] Test method: dry rubbing method and wet rubbing method were used for test, and the rubbing times were 100 times;
[0111] According to GB / T3920-2013 "Determination of rubbing fastness of textiles".
[0112] Light fastness test
[0113] Test method: the sample was irradiated by ultraviolet light for 48 hours, and the change after dyeing was observed;
[0114] According to ISO105-B02.
[0115] Fastness rating: according to the rating standard of GB / T250, the effect was quantified from 0 to 5 levels, in which 0 level was the lowest and 5 level was the highest.
[0116] In the above test, three parallel tests were made for each sample, and the test results were averaged. The test results are shown in Table 1.
[0117] Table 1: comparison table of performance test results
[0118] Sample Washing colour fastness Dry rubbing colour fastness Wet rubbing colour fastness Lighting colour fastness Example 1 4 4 3 4 Example 2 5 5 4 4 Example 3 5 5 5 5 Comparative Example 1 2 2 2 2 Comparative Example 2 3 2 1 2 Comparative Example 3 2 2 2 3 Comparative Example 4 3 2 2 2
[0119] According to the low-temperature dyeing method of camel hair in examples 1-3, we found that the reversible dyes used had good fastness performance in deionized water at pH 6, especially the acid reversible dyes in examples 1-3, which showed good light resistance and washing resistance during the dyeing process of camel hair, which indicated that they had excellent fastness.
[0120] Further, for the dyed samples of examples 1-3, the washing resistance and mechanical properties were improved to some extent, and the experimental results showed that the reversible dyes in examples 1-3 had significantly improved color fastness, for example, the washing resistance of the sample of example 1 was significantly better than that of the comparative sample without the same dye, therefore, the reversible dyes in examples 1-3 played a significant role in improving the washing resistance of camel hair.
[0121] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since numerous changes, modifications, substitutions and variations can be made thereto without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.
Claims
1. A camel hair low-temperature dyeing method, characterized in that: The following steps are involved: Washing the camel hair fiber in deionized water, and then drying the washed camel hair fiber at room temperature; Prepare a dye solution, the dye solution comprising 1-5 g / L of a reversible dye, 5-10 g / L of a bio-based auxiliary agent and deionized water, wherein the pH value of the dye solution is 6-7; soaking the camel hair fiber in the dye solution, and then stirring the dye solution; Performing a color fixing treatment on the stirred camel hair fiber, lowering the temperature of the dye solution, adding a color fixing agent, and stirring; Finally, the camel hair fiber after adding the fixing agent and stirring is washed with deionized water until the water is transparent, and finally dried.
2. A camel hair low-temperature dyeing method according to claim 1, characterized in that, When washing in the deionized water, the temperature of the deionized water is 30° C., and the washing is carried out for 30 minutes. The camel hair fibers are then dried until the moisture content is no more than 10%.
3. A camel hair low-temperature dyeing method according to claim 1, characterized in that, The reversible dye includes an acid dye or a reducing dye, and the bio-based auxiliary agent is sodium alginate, and the molecular weight of the sodium alginate ranges from 50,000 to 200,000 g / mol.
4. A camel hair low-temperature dyeing method according to claim 1, characterized in that, When the dye solution is stirred, the dyeing temperature is 30-40° C., the stirring speed is 60-80 rpm, and the dyeing duration is 30 to 60 minutes.
5. A camel hair low-temperature dyeing method according to claim 1, characterized in that, The soaking time is 30 to 45 minutes. During stirring, the dyeing temperature is 30 to 40° C., the stirring speed is 60 to 80 rpm, and the duration is 30 to 60 minutes.
6. A camel hair low-temperature dyeing method according to claim 1, characterized in that, The dyeing solution temperature is lowered to 20-25° C. and a fixing agent is added, and the adding of the fixing agent and stirring are continued for 10-15 minutes.
7. A camel hair low-temperature dyeing method according to claim 1, characterized in that, When the deionized water is used for cleaning, the conductivity of the deionized water is less than 0.1 μS / cm.
8. A camel hair low-temperature dyeing method according to claim 1, characterized in that, The drying comprises the following steps: The camel hair fibers that have been cleaned are passed through a centrifuge to remove moisture; The camel hair fibers after moisture removal are spread flat on an air drying rack and the moisture is evaporated by using air circulation equipment; Turn the camel hair fiber regularly during the evaporation process, and place the dried camel hair fiber in a sealed and dry container after completion.
9. A camel hair low-temperature dyeing method according to claim 1, characterized in that, The method further comprises the following steps: Collect the dye solution that has been dyed and add a biocatalyst; Stir the dye solution with the biocatalyst evenly and place it in a cool place to react for 36 to 48 hours; After the reaction is completed, the dye solution after the reaction is filtered, and then the filtered dye solution is purified.
10. A camel hair low-temperature dyeing method according to claim 9, characterized in that: The biocatalyst comprises one or more combinations of amylase, protease and cellulase, and the concentration of the biocatalyst is 1-5 g / L.