Dyed silk yarn and method for producing the same

Abstract

The application discloses dyed silk floss and a preparation method thereof. The silk floss dyeing method is as follows: (1) adding ganoderma spore powder into dilute acetic acid, treating at 80-90 DEG C for 0.5-1 hour, then adding ammonia water, and adjusting the system PH to 6-7 to obtain a ganoderma spore powder dyeing solution. Preferably, the ganoderma spore powder is broken-walled ganoderma spore powder, and further preferably, the broken-walled treatment time is 15-25 minutes; (2) adding degummed silk floss into the ganoderma spore powder dyeing solution, heating and impregnating, then taking out to obtain dyed silk floss. The application provides a silk floss dyeing method based on ganoderma spore powder, and first obtains colored silk floss without high-temperature and high-pressure expansion treatment.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of textile dyeing and finishing, and relates to a silk floss dyeing method based on ganoderma spore powder. BACKGROUND

[0002] Dyed silk floss has certain application requirements, and the applicant has previously disclosed a plurality of preparation methods of biological dyed silk floss and has formed certain production. Among them, CN111286998A discloses adding spore powder into water to obtain a spore powder suspension; performing wall breaking treatment and ultrasonic treatment on the spore powder suspension to obtain a spore powder treatment liquid; immersing silk floss pieces in an aqueous solution of a swelling agent and then performing high-temperature and high-pressure treatment, and then washing to obtain expanded silk floss; adding the washed expanded silk floss into the spore powder treatment liquid and performing oscillation treatment to complete the dyeing of the silk floss. Since the applicant disclosed the dyed silk floss, the feedback has been quite good, but there are still some problems to be solved, such as the lack of products of deep coffee-colored silk floss due to the limitation of dyes; in addition, whether it is the above-mentioned spore powder dyeing or spore powder dyeing such as Sanghuang spore powder, at present, high-temperature and high-pressure expansion is required before good dyeing effect can be obtained, which increases the production difficulty and cost. SUMMARY

[0003] In view of the above situation, the application provides a silk floss dyeing method based on ganoderma spore powder, which first obtains colored silk floss without high-temperature and high-pressure expansion treatment.

[0004] The application adopts the following technical scheme:

[0005] A dyed silk floss, and a preparation method thereof, includes the following steps: adding degummed silk floss into a ganoderma spore powder dyeing liquid, heating and immersing, and then taking out to obtain dyed silk floss.

[0006] In the application, the preparation method of the ganoderma spore powder dyeing liquid is as follows: adding ganoderma spore powder into dilute acetic acid, treating at 80-90 DEG C for 0.5-1 hour, then adding ammonia water to adjust the system PH to 6-7 to obtain the ganoderma spore powder dyeing liquid. Preferably, the ganoderma spore powder is broken wall ganoderma spore powder, and further preferably, the wall breaking treatment time is 15-25 minutes.

[0007] In the application, the immersion time is 60-100 minutes, and the temperature is 90-95 DEG C. The prior art needs to immerse the silk floss pieces in an aqueous solution of a swelling agent and then perform high-temperature and high-pressure treatment, and then wash to obtain expanded silk floss; and then dye, referring to the previous technical scheme of the applicant, in this way, a product with good dyeing effect can be obtained, the application omits the expansion step, directly uses degummed silk floss for dyeing to obtain dyed silk floss, and has quite good dyeing effect.

[0008] In the present application, the ratio of the ganoderma lucidum spore powder and dilute acetic acid is 0.2-0.5 g:10 mL; the ratio of the silk and the ganoderma lucidum spore dyeing solution is 1 g:10-20 mL. Preferably, the ratio of the ganoderma lucidum spore powder and dilute acetic acid is 0.3-0.4 g:10 mL; the ratio of the silk and the ganoderma lucidum spore dyeing solution is 1 g:15-18 mL.

[0009] The spore powder is obtained by collecting the spores ejected from the tracheae of ganoderma lucidum after the fruiting body is matured, and contains rich polysaccharides, alkaloids, organic germanium and terpenoids and other components. The ganoderma lucidum spore wall is tough and is composed of chitin, cellulose, lignin and the like. These high molecular components are insoluble in water and resistant to acid and alkali, pressure and high temperature, so that the effective substances of the spores are covered. Therefore, the ganoderma lucidum spores are broken. The existing breaking methods include biological method, chemical method, physical method and mechanical method. The present application adopts the mechanical method to directly crush the spores by mechanical actions such as rolling, extruding and impacting, which is simple in operation and has a relatively ideal breaking effect.

[0010] The prior art uses mixed rare earth as a mordant to help the ganoderma lucidum pigment molecules form a stable coordination bond with the silk fibers, thereby improving the dyeing rate, color fastness and other dyeing parameter indexes. The present application overcomes the prejudice of the prior art and does not use a mordant, and further does not need to dye the fluffy degummed silk pieces. Instead, the present application directly uses the ganoderma lucidum spore powder to dye the degummed silk, thereby overcoming the problem of using a swelling agent in the ganoderma lucidum dyeing process, simplifying the production process and improving the process controllability. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a photo of the dyed silk based on the ganoderma lucidum spore powder. DETAILED DESCRIPTION

[0012] The silk dyeing method based on the ganoderma lucidum spore powder disclosed in the present application is as follows:

[0013] (1) The ganoderma lucidum spore powder is added into dilute acetic acid and treated at 80-90℃ for 0.5-1 hour, then ammonia water is added to adjust the system PH to 6-7, thereby obtaining a ganoderma lucidum spore dyeing solution. Preferably, the ganoderma lucidum spore powder is broken wall ganoderma lucidum spore powder, and further preferably, the breaking wall treatment time is 15-25 minutes.

[0014] (2) The degummed silk is added into the ganoderma lucidum spore dyeing solution, heated and immersed, then taken out, thereby obtaining dyed silk.

[0015] In the present application, the WZJ-6B cell wall breaking machine of Tianfang Machinery is used for breaking wall treatment. The prior art uses metal mordant or elymus nutans as a dyeing aid to improve the dyeing effect. In the present application, the dyeing method does not contain a mordant and other dyeing aids.

[0016] The technical solutions of the present application will be further illustrated below in combination with the drawings and specific examples. Unless otherwise specified, the various reagents, materials, instruments, etc. used in the following examples can be obtained by commercial means, wherein the silk is a non-swelled degummed silk, which is a conventional existing mulberry silk product; the ganoderma spore powder is from Ruifeng Agriculture, and is not broken. After the dyeing of the examples and comparative examples is completed, the silk is taken out of the dyeing solution, subjected to conventional sterilization (irradiation), washed with water, and dried to obtain the silk dyed with ganoderma spore powder.

[0017] Example One

[0018] (1) After the ganoderma spore powder is washed and dried, it is added to a cell wall breaking machine for treatment for 20 minutes to obtain broken wall powder; 35 g of the broken wall powder is added to 1 L of dilute acetic acid (1.5 wt%) and subjected to conventional stirring at 90°C for 1 hour, and then ammonia water (28 wt%) is added to adjust the PH of the system to 6.5 to obtain a ganoderma spore powder dyeing solution;

[0019] (2) 10 g of degummed silk is added to 150 mL of the ganoderma spore powder dyeing solution, immersed at 95°C for 70 minutes, and then taken out and dried to obtain dyed silk.

[0020] Figure Figure 1 The real object photo of the ganoderma spore powder-based dyed silk prepared in Example One is a deep coffee color, and it can be seen that the present application still achieves excellent technical effects of dyeing without the mordant or assistant such as elymus nutans that are considered necessary in the prior art.

[0021] Example Two

[0022] (1) After the ganoderma spore powder is washed and dried, it is added to a cell wall breaking machine for treatment for 15 minutes to obtain broken wall powder; 35 g of the broken wall powder is added to 1 L of dilute acetic acid (1.5 wt%) and subjected to conventional stirring at 90°C for 1 hour, and then ammonia water (28 wt%) is added to adjust the PH of the system to 6.5 to obtain a ganoderma spore powder dyeing solution;

[0023] (2) 10 g of degummed silk is added to 150 mL of the ganoderma spore powder dyeing solution, immersed at 95°C for 70 minutes, and then taken out and dried to obtain dyed silk.

[0024] Example Three

[0025] (1) After the ganoderma spore powder is washed and dried, it is added to a cell wall breaking machine for treatment for 25 minutes to obtain broken wall powder; 35 g of the broken wall powder is added to 1 L of dilute acetic acid (1.5 wt%) and subjected to conventional stirring at 90°C for 1 hour, and then ammonia water (28 wt%) is added to adjust the PH of the system to 6.5 to obtain a ganoderma spore powder dyeing solution;

[0026] (2) 10 g degummed silk was added into 150 mL Ganoderma lucidum spore powder dyeing solution, immersed at 95℃ for 70 minutes, then taken out and dried, to obtain dyed silk.

[0027] Comparative Example One

[0028] (1) After Ganoderma lucidum spore powder was washed and dried, it was added into a cell wall breaking machine for 10 minutes to obtain broken wall powder; 35 g of the broken wall powder was added into 1 L dilute acetic acid (1.5 wt%) and treated at 90℃ for 1 hour under normal stirring, then ammonia water (28 wt%) was added to adjust the pH of the system to 6.5, to obtain Ganoderma lucidum spore powder dyeing solution;

[0029] (2) 10 g degummed silk was added into 150 mL Ganoderma lucidum spore powder dyeing solution, immersed at 95℃ for 70 minutes, then taken out and dried, to obtain dyed silk.

[0030] The rubbing fastness was tested according to GB / T3920-2008 Textiles Color Fastness Test Rubbing Fastness, and the results were as follows:

[0031] As can be seen from the table, the silk dyed by the dyeing method according to the present application does not need a mordant, and the rubbing fastness meets the standard for real silk dyeing; and the present application avoids the problem of using an expanding agent.

[0032] Comparative Example One

[0033] (1) 7 g broken wall Ganoderma lucidum spore powder was added into 400 mL distilled water and 100 mL ethanol at room temperature to obtain a spore powder suspension;

[0034] (2) The pH value of 140 mL spore powder treatment solution of step (1) was adjusted to 6, then 10 g expanded silk was added (the preparation method is referred to CN111286998A), and after shock treatment, it was normally dried to complete the dyeing of the silk, the shock treatment time was 7 hours, and the temperature was 37℃, which was the dyeing condition.

[0035] Comparative Example Two

[0036] On the basis of Comparative Example One, the shock treatment temperature was increased to 90℃ to complete the dyeing of the silk.

[0037] The dyed silk obtained by Comparative Example One and Comparative Example Two had poor dyeing effect, especially the dry rubbing was less than 3 levels.

[0038] Example Four

[0039] (1) After the Ganoderma lucidum spore powder is washed and dried, it is added into a cell wall breaking machine for treatment for 20 minutes to obtain a broken wall powder; 40 g of the broken wall powder is added into 1 L of dilute acetic acid (1.5 wt%) and treated at 90°C for 1 hour under normal stirring, then ammonia water (28 wt%) is added to adjust the PH of the system to 6.5 to obtain a Ganoderma lucidum spore powder dyeing solution;

[0040] (2) 10 g of degummed silk is added into 150 mL of the Ganoderma lucidum spore powder dyeing solution, immersed at 95°C for 70 minutes, then taken out and dried to obtain dyed silk.

[0041] Example Five

[0042] (1) After the Ganoderma lucidum spore powder is washed and dried, it is added into a cell wall breaking machine for treatment for 15 minutes to obtain a broken wall powder; 35 g of the broken wall powder is added into 1 L of dilute acetic acid (1.5 wt%) and treated at 90°C for 1 hour under normal stirring, then ammonia water (28 wt%) is added to adjust the PH of the system to 7.0 to obtain a Ganoderma lucidum spore powder dyeing solution;

[0043] (2) 10 g of degummed silk is added into 150 mL of the Ganoderma lucidum spore powder dyeing solution, immersed at 90°C for 70 minutes, then taken out and dried to obtain dyed silk.

[0044] Example Six

[0045] (1) After the Ganoderma lucidum spore powder is washed and dried, it is added into a cell wall breaking machine for treatment for 25 minutes to obtain a broken wall powder; 35 g of the broken wall powder is added into 1 L of dilute acetic acid (1.5 wt%) and treated at 90°C for 1 hour under normal stirring, then ammonia water (28 wt%) is added to adjust the PH of the system to 6.5 to obtain a Ganoderma lucidum spore powder dyeing solution;

[0046] (2) 12 g of degummed silk is added into 150 mL of the Ganoderma lucidum spore powder dyeing solution, immersed at 95°C for 80 minutes, then taken out and dried to obtain dyed silk.

[0047] The prior art uses spore powder to dye expanded silk pieces, and the richness of the color is still lack of coffee color. The application develops a new dyeing method according to the application requirement, and deep coffee color silk is obtained for the first time.

Claims

1. A method for preparing dyed silk, comprising the following steps: (1) washing and drying Ganoderma spore powder, and then adding it into a cell wall breaking machine for 20 minutes to obtain broken wall powder; adding 35 g of the broken wall powder into 1.5 wt% 1 L dilute acetic acid, stirring and treating at 90°C for 1 hour, and then adding 28 wt% ammonia water to adjust the pH of the system to 6.5 to obtain a Ganoderma spore powder dyeing solution; (2) adding 10 g of degummed silk into 150 mL of the Ganoderma spore powder dyeing solution, immersing at 95°C for 70 minutes, and then taking out and drying to obtain dyed silk.

2. Dyed silk prepared by the method for preparing dyed silk according to claim 1.

3. Use of the dyed silk according to claim 2 in the preparation of colored silk fabrics. ​ ​

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