Treatment process of apocynum venetum fiber

Abstract

The invention discloses a treatment process of apocynum venetum fibers, and belongs to the technical field of textile dyeing and finishing. The method comprises the following steps: carrying out microwave pretreatment on apocynum venetum bast, and synchronously completing fiber degumming and dyeing processing in a single-bath environment by adopting the synergistic effect of a chemical and composite biological enzyme combined degumming system and reactive dye and accurately controlling process parameters such as pH value, temperature and time. An alkali and composite biological enzyme combined degumming system is innovatively adopted to realize efficient degumming, and meanwhile, an active dye with a colloid affinity group is introduced, so that a cellulose structure exposed in the degumming process is synchronously colored. Compared with a traditional step-by-step treatment process, the process has the advantages that consumed time is shortened by about 40%, water and energy are saved by about 50%, the residual gum rate of the obtained fiber is smaller than or equal to 5%, and various color fastness reaches level 3 or above. The method breaks through the technical bottlenecks of high energy consumption and long flow of the traditional process, and provides an innovative solution for green processing of the apocynum venetum fiber.

Description

Technical Field

[0001] The present invention relates to the technical field of textile printing and dyeing, and particularly relates to a processing technology for apocynum fibers. Background Art

[0002] Currently, in the textile industry, for the processing of apocynum fiber fabrics, degumming is usually carried out first to remove impurities, natural pigments, etc. on the fibers, and then the dyeing process is carried out. Multiple chemical auxiliaries, such as caustic soda and hydrogen peroxide, are generally used in the degumming process for degumming and bleaching, which takes a long time and requires a large amount of water for multiple water washes; the dyeing process is another subsequent stage, and it is necessary to reconfigure the dye liquor, adjust appropriate temperature, pH value and other conditions to achieve the dyeing effect. The whole process has cumbersome steps, high energy consumption, and multiple processing operations are likely to cause certain damage to the properties of apocynum fibers, affecting the final quality of the fabric, such as a decrease in strength and a deterioration in handfeel.

[0003] The problems existing in the processing technology of apocynum fiber fabrics are as follows: low production efficiency: the degumming and dyeing processes in two steps result in a long processing cycle for the whole fabric, which is not conducive to rapid production and delivery.

[0004] Large resource consumption: a large amount of water, auxiliaries, and repeated processing, heating, and water washing processes increase the production cost and do not conform to the development trend of environmental protection and energy conservation.

[0005] Large fiber damage: multiple processing links are likely to cause damage to the strength of apocynum fibers, reducing the wearing performance of the fabric. Summary of the Invention

[0006] The present invention provides a processing technology for apocynum fibers, which solves the problems of low production efficiency, large resource consumption, and easy fiber damage existing in the processing of existing apocynum fiber fabrics, realizes one-bath degumming-dyeing, improves product quality, reduces energy consumption and production cost at the same time, and reduces the adverse impact on the environment.

[0007] A processing technology for apocynum fibers is characterized in that the processing technology includes: S1, putting apocynum bast into an alkali solution, performing microwave treatment and then washing and drying to obtain pretreated apocynum; S2, putting the pretreated apocynum in S1 into a composite alkali solution, heating, adding a composite bio-enzyme and an oxidant, and continuing to process for a certain time; S3, cooling the solution in step S2, adding a bio-enzyme, a reactive dye, salt, and alkali, heating, washing and drying to obtain colored apocynum fibers; Preferably, the base in S1 is sodium hydroxide with a concentration of 1 - 5 g / L, the microwave treatment temperature is 30 - 80 °C, the treatment is carried out at a power of 600 W for 10 - 60 minutes, the liquor ratio is 1:(20 - 40), washed with water until neutral, and dried in an oven to constant weight to obtain pretreated apocynum venetum; Preferably, the components of the composite alkali solution in S2 are 2% - 6% NaOH, 1% - 5% Na2SiO3, 1% - 5% Na2SO3, the liquor ratio is 1:(10 - 50), and treated in a water bath at 80 - 100 °C for 1 - 3 hours; the dosage of the composite alkaloid in S2 is 15% - 30%, the dosage of the oxidant is 10% - 20%, and treated in a water bath at 80 - 100 °C for 0.5 - 1.5 hours; Preferably, the composite bio - enzyme includes the following components: pectinase, hemicellulase, ligninase, laccase; the oxidant is hydrogen peroxide; Preferably, S3 includes: cooling to 40 - 60 °C, adding 5 - 15 g / L of neutral pectinase, after holding for 15 minutes, adding 1 - 10% reactive dye, adding 20 - 60 g / L of NaCl after 15 minutes, heating to 70 - 90 °C, adding 5 - 20 g / L of Na2CO3, continuing to dye for 20 - 40 minutes, then taking out the fiber, soaping and drying to obtain the colored apocynum venetum fiber.

[0008] Compared with the prior art, the beneficial effects of the present invention are: The degumming and dyeing one - bath synchronous treatment process of apocynum venetum fiber in the embodiments of the present disclosure, the treatment process, the raw apocynum venetum goes through processes such as microwave pretreatment → water washing → drying → degumming + dyeing → soaping → drying, and the treatment process of the present invention has the following beneficial effects: Improve production efficiency: The present invention uses microwave to pretreat apocynum venetum, which can promote the removal of impurities and is beneficial to the subsequent degumming process; the present invention combines degumming and dyeing into one bath, greatly shortening the processing flow and time of apocynum venetum fiber, and can effectively improve production efficiency.

[0009] Reduce resource consumption: Reduce multiple water washings, and reduce the consumption of water, chemical auxiliaries and energy (such as water and electricity for heating).

[0010] Protect fiber properties: Avoid problems such as loss of strength and poor hand feeling caused by the repeated influence of chemical substances and high temperature on the fiber during traditional multiple processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A process block diagram of the treatment of apocynum venetum fiber showing an embodiment of the present disclosure.

[0012] Figure 2Test result graph of the influence of Apocynum venetum pretreatment methods on the color effect of fibers.

[0013] Figure 3 Test result graph of the influence of dye types on the color effect of Apocynum venetum fibers. Detailed implementation manners

[0014] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified.

[0015] The term "exemplary" used herein means "serving as an example, embodiment, or illustration". Any embodiment described herein as "exemplary" does not have to be construed as superior or better than other embodiments.

[0016] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following detailed implementation manners. Those skilled in the art should understand that the present disclosure can also be implemented without some specific details. In some instances, methods, means, elements, and circuits well-known to those skilled in the art are not described in detail so as to highlight the gist of the present disclosure.

[0017] As Figure 1 shown, a processing technology for Apocynum venetum fibers, the processing technology includes: Example 1: Selection of pretreatment methods in the one-bath process of Apocynum venetum degumming and dyeing S1. Put Apocynum venetum bast into a 5 g / L NaOH solution with a bath ratio of 1:40, then place the samples in an ultrasonic and microwave reactor and treat them at a temperature of 30-80 °C for 30 minutes, wash with water until neutral, and then dry them in an oven at 60 °C to constant weight to obtain pretreated Apocynum venetum; S2. Put 2 g of the pretreated Apocynum venetum fibers in step S1 into 0.1 g of NaOH, 0.05 g of Na2SiO3, 0.05 g of Na2SO3, with a bath ratio of 1:40, and treat them in a 95 °C water bath for 1.5 hours; then add 20% composite bio-enzyme and 10% H2O2, and treat them in a 95 °C water bath for 1 hour; S3. Cool the degumming liquid in S2 to 60 °C, add 5 g / L neutral pectinase, keep warm for 15 minutes, then add 1% reactive blue M-2GN, add 20 g / L of NaCl after 15 minutes, continue dyeing for 15 minutes, raise the temperature to 80 °C, add 10 g / L of Na2CO3, continue dyeing for 30 minutes, then take out the fibers, wash with soap and dry to obtain the colored Apocynum venetum fibers, and the dyeing results are as Figure 2 shown; the above percentages are all based on the weight of Apocynum venetum bast.

[0018] As Figure 2 shown, in this embodiment and the following K / S values, the Ultra Scan PRO colorimetric and color matching instrument D 65 standard light source was used and measured at a 10° viewing angle. Among them, the temperature on the abscissa is the processing temperature in the ultrasonic and microwave reactor. The K / S value on the ordinate is an important index in color and dyeing, used to evaluate the dyeing performance of dyes. The larger the K / S value, the darker the color on the surface of the solid sample, that is, the higher the concentration of the colored substance and the better the dyeing performance of the dye.

[0019] Example 2: Selection of enzymes in the one-bath process of degumming and dyeing of Apocynum venetum S1. Put the Apocynum venetum bast into a 5 g / L NaOH solution with a liquor ratio of 1:40, then place the samples in a 600 W microwave reactor at 50 °C for 30 minutes, wash with water until neutral, and then dry them in an oven at 60 °C to constant weight to obtain pretreated Apocynum venetum. S2. Put 2 g of the pretreated Apocynum venetum fibers in step S1 into 0.1 g of NaOH, 0.05 g of Na2SiO3, 0.05 g of Na2SO3, with a liquor ratio of 1:40, and treat them in a 95 °C water bath for 1.5 hours; then add 20% composite bio-enzyme and 10% H2O2, and treat them in a 95 °C water bath for 1 hour; use three kinds of composite bio-enzymes to carry out one-bath degumming and dyeing treatment on Apocynum venetum to explore the performance of the dyed Apocynum venetum fibers. The three composite bio-enzymes are: A, B, and C. Among them, the components of A are pectinase, hemicellulase, ligninase, and laccase with a mass ratio of 6:2:1:1, the components of B are pectinase, hemicellulase, ligninase, and laccase with a mass ratio of 8:1:0.5:0.5, and the components of C are pectinase, hemicellulase, ligninase with a mass ratio of 7:1.5:1.5. S3. Cool the degumming solution in S2 to 60 °C, add 5 g / L neutral pectinase, add 1% reactive blue M-2GN after keeping warm for 15 minutes, add 20 g / L of NaCl after 15 minutes, continue dyeing for 15 minutes, raise the temperature to 80 °C, add 10 g / L of Na2CO3, continue dyeing for 30 minutes, then take out the fibers, wash with soap and dry to obtain the dyed Apocynum venetum fibers. The dyeing results are shown in Table 1.

[0020] In this embodiment and the following, the fiber strength was tested according to GB5881-86 "Test Method for Breaking Strength of Ramie Single Fibers", the residual gum rate was tested according to GB / T 5881-2024 "Test Methods for Physical and Chemical Properties of Ramie", and the color fastness was tested with reference to GB / T3921-2008 "Textiles - Tests for color fastness - Color fastness to soaping" and GB / T 3920-2008 "Textiles - Tests for color fastness - Color fastness to rubbing".

[0021] Table 1 Comparison of the properties of ramie fibers after degumming and dyeing with different composite bio-enzymes ; Table 2 Comparison of the color fastness of ramie fibers after degumming and dyeing with different composite bio-enzymes ; Example 3: Selection of dyes in the one-bath process of ramie degumming and dyeing S1. Put ramie bast into a 5 g / L NaOH solution with a bath ratio of 1:40. Then place the samples in a 600 W microwave reactor and treat them at a temperature of 50 °C for 30 minutes. Wash with water until neutral, and then dry them in an oven at 60 °C to constant weight to obtain pretreated ramie; S2. Put 2 g of the pretreated ramie fibers in Step S1 into 0.1 g of NaOH, 0.05 g of Na2SiO3, 0.05 g of Na2SO3, with a bath ratio of 1:40, and treat them in a water bath at 95 °C for 1.5 hours; then add 20% composite bio-enzyme B and 10% H2O2, and treat them in a water bath at 95 °C for 1 hour; S3. Cool the degumming solution in S2 to 60 °C, add 5 g / L of neutral pectinase, keep warm for 15 minutes, and then add 1% of the dyes, which are: WNN Black (a), S-G Black (b), Cationic Brilliant Blue (c), Reactive Blue KN-G (d), Reactive Light Yellow K-2G (e), Reactive Yellow K-RN (f), Reactive Blue M-2GN (g). After 15 minutes, add 20 g / L of NaCl and continue dyeing for 15 minutes. Raise the temperature to 80 °C, add 10 g / L of Na2CO3, continue dyeing for 30 minutes, then take out the fibers, wash them with soap and dry them to obtain the colored ramie fibers. The dyeing results are as Figure 3 shown.

[0022] The embodiments of the present disclosure have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other ordinary skill in the art in this technical field to understand the disclosed embodiments.

Claims

1. A processing technology for apocynum venetum fiber, characterized in that, The described processing technology includes: S1. Put the apocynum venetum bast into an alkali solution, perform microwave treatment, then wash, dry, and obtain pretreated apocynum venetum. S2. Put the pretreated apocynum venetum in S1 into a compound alkali solution, after heat treatment, add compound bio - enzyme and oxidant, and continue the treatment for a certain period of time. S3. Cool down the solution in step S2, add bio - enzyme, reactive dye, salt, and alkali, perform heat treatment, then wash and dry to obtain colored apocynum venetum fiber.

2. The processing technology of a kind of apocynum fiber according to claim 1, characterized in that The alkali in S1 is sodium hydroxide with a concentration of 1 - 5 g / L, the microwave treatment temperature is 30 - 80 °C, treat with a power of 600 W for 10 - 60 minutes, the bath ratio is 1:(20 - 40), wash until neutral, and dry in an oven to constant weight to obtain pretreated apocynum venetum.

3. The processing technology of a kind of apocynum venetum fiber according to claim 1, characterized in that, The components of the compound alkali solution in S2 are 2% - 6% NaOH, 1% - 5% Na2SiO3, 1% - 5% Na2SO3, the bath ratio is 1:(10 - 50), perform water - bath treatment at 80 - 100 °C for 1 - 3 hours; the dosage of the compound alkaloid in S2 is 15% - 30%, the dosage of the oxidant is 10% - 20%, perform water - bath treatment at 80 - 100 °C for 0.5 - 1.5 hours.

4. The processing technology of apocynum venetum fiber according to claim 3, characterized in that, The described compound bio - enzyme includes the following components: pectinase, hemicellulase, ligninase, laccase; the oxidant is hydrogen peroxide.

5. The processing technology of a kind of apocynum venetum fiber according to claim 1, characterized in that, Step S3 includes: cool down to 40 - 60 °C, add 5 - 15 g / L neutral pectinase, after keeping warm for 15 minutes, add 1 - 10% reactive dye, add 20 - 60 g / L of NaCl after 15 minutes, raise the temperature to 70 - 90 °C, add 5 - 20 g / L of Na2CO3, continue dyeing for 20 - 40 minutes, then take out the fiber, perform soaping and drying to obtain colored apocynum venetum fiber.

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