Bio-based tencel splitting agent as well as preparation method and application thereof

Abstract

The invention provides a bio-based tencel splitting agent and a preparation method and application thereof, and the bio-based tencel splitting agent comprises an acid agent, a bio-enzyme, a bio-based surfactant, an antacid, a stabilizer and water. The bio-based tencel splitting agent can realize splitting treatment of tencel fabric by applying a one-step one-bath method, and has the advantages of uniform splitting effect, mild treatment condition, less sewage discharge, short process time and low temperature, not only can greatly reduce energy consumption, but also can achieve the optimal splitting effect on the premise of protecting fiber strength, and has good application prospects. The tencel fabric subjected to splitting treatment is easier to dye, and has the characteristics of being green, environment-friendly, high in safety and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of textile auxiliaries, and specifically relates to a bio-based Tencel fiber opening agent and a preparation method and application thereof. Background Art

[0002] Tencel fiber is a special high wet modulus regenerated cellulose fiber. Its molecular structure is a simple carbohydrate, which can be completely decomposed in the soil and has no pollution to the environment. It usually adopts solvent spinning technology. The amine oxide solvent used in production is completely harmless to the human body, almost completely recyclable and can be reused. The cellulose molecules contained in the raw pulp in production do not undergo chemical changes, and there are no by-products or waste discharged outside the factory. It is an environmentally friendly or green fiber.

[0003] The dry strength of Tencel is slightly lower than that of polyester, but significantly higher than that of general viscose fibers. Its wet strength is significantly improved over that of viscose, and it has very high rigidity, good dimensional stability after washing (shrinkage is only 2%), and high hygroscopicity. The cross section of Tencel fibers is round or oval, and smooth in the longitudinal direction. Therefore, the fabrics made of it have the luster of silk, the soft feel of cotton, and the smooth drape and flow. At the same time, due to its good spinnability, it can be spun purely, or interwoven and blended with cotton, linen, silk, wool, chemical fiber and other fibers. The variety of fabrics is very popular among people.

[0004] Tencel is a solvent-spun regenerated cellulose fiber that contains fibril structures. These fibril structures can be "opened" under certain conditions, splitting the fibrils along the fiber axis to reveal finer microfibrils, which are then peeled off into multiple ultra-fine fibers with extremely low single-line density. They have a soft feel and excellent hydrophobic and moisture-conducting properties, thereby enriching the style diversity of the fabric and meeting the requirements of subsequent dyeing and finishing. This special treatment process is called fiber opening. The fiber opening treatment of Tencel usually involves the following steps: (1) Wet expansion: Tencel fibers will undergo significant axial expansion in a wet environment because the volume of cellulose increases after absorbing water; (2) Mechanical friction: Using mechanical action, such as friction or special machinery and equipment, to apply external force to the wet Tencel fabric, causing the fibril structure on the fiber surface to break; (3) Chemical or enzyme treatment: Sometimes chemical reagents or enzyme treatment are used in combination to help separate the fibrils, accelerate the fiber opening process or control the degree of fiber opening; (4) Subsequent treatment: After fiber opening, subsequent treatments such as cleaning and shaping may be required to stabilize the new structure of the fabric and remove unnecessary fiber fragments.

[0005] At present, there are many studies and reports on fiber opening treatment. For example, CN102644202A discloses a fibrillation treatment method for Tencel fabrics, the treatment method comprising the steps of: (a) adding 2-4% by weight of a fiber opening agent to the dye liquor during the roll dyeing of the Tencel fabric blank, heating to 90-98°C under alkaline conditions, and heat preservation for 80-160 minutes; (b) cooling the dye liquor to 55-65°C, adding cellulase for 40-60 minutes, taking out the Tencel fabric blank after fibrillation treatment and drying; although the invention realizes the fibrillation of Tencel fabrics, it still has the following defects: first, sodium hydroxide is used as a fiber opening agent in the process, and the alkalinity of sodium hydroxide is relatively high. Fibers such as polyester and cuprammonia silk are not resistant to strong alkali, so its application is subject to certain restrictions; second, the fiber opening bath ratio of the invention is 1:10-1:40, the bath ratio is large, the water consumption is high, it is not conducive to environmental protection, and the energy saving effect is poor.

[0006] For another example, CN107675485A discloses a modal acid pre-fiber opening process, which includes the following steps: adding sulfuric acid into a machine cylinder at room temperature; heating and maintaining the water bath at room temperature; heating and maintaining the temperature again; cooling to complete the pre-treatment; the invention performs acid treatment on modal before fiber opening by heating twice and cooling once; however, the sulfuric acid used in the invention is highly corrosive and oxidizing, and the process time is long and the temperature is high, which will not only damage the fiber opening equipment, but also make the fiber opening effect difficult to control, which will destroy the fiber strength and affect the stability of product quality.

[0007] For another example, CN103243506A discloses a method for making brushed Tencel fabric, comprising the following steps: when roller-dyeing the Tencel fabric blank, adding 2-4% by weight of a fiber opener to the dye liquor, heating to 90-98°C under alkaline conditions, and keeping warm for 80-160 minutes; cooling the dye liquor to 55-65°C, adding cellulase for treatment for 40-60 minutes, taking out the fibrillated Tencel fabric and brushing it twice, and after brushing, printing and dyeing, steaming, color fixing, washing, drying, impregnating with a softener, qualitative analysis, and drying; the method provided by the invention needs to be processed in two steps, the process time is long, the temperature is high, and the energy-saving effect is poor.

[0008] Therefore, in response to the above technical problems, it is urgent to develop a bio-based Tencel fiber opening agent with excellent fiber opening effect, green and environmental protection, and mild processing conditions. Summary of the invention

[0009] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a bio-based Tencel fiber opening agent and a preparation method and application thereof. The bio-based Tencel fiber opening agent can achieve fiber opening treatment of Tencel fabrics using a one-step one-bath method, and the effect is uniform and consistent, the treatment conditions are mild, the sewage discharge is small, the process time is short, the temperature is low, and the energy consumption is greatly reduced. The optimal fiber opening effect is achieved under the premise of protecting the fiber strength, and the Tencel fabric after the fiber opening treatment also has an excellent dyeing effect.

[0010] To achieve this object, the present invention adopts the following technical solutions:

[0011] In a first aspect, the present invention provides a bio-based Tencel fiber opener, which comprises an acid agent, a biological enzyme, a bio-based surfactant, an antacid, a stabilizer and water.

[0012] Research has found that Tencel is a regenerated cellulose fiber. Taking advantage of the fact that cellulose fiber has a large swelling degree in acidic media, firstly, adding an acid agent can dissolve cellulose and lignin, thereby eroding the fiber epidermis or surface; secondly, after being fibrillated by acid treatment, the fiber hairiness in the yarn will come out and will also be weakly fibrillated, producing fine and dense fluff on the cloth surface, which is easy to entangle and pilling. By adding biological enzymes and using biological enzymes to decompose these fine fluffs, cellulose will be decomposed into its monomer glucose and dissolved in water, making the cloth surface and fiber surface smooth and flat, which is convenient for subsequent dyeing and finishing; thirdly, adding bio-based surfactants as raw materials, removing some oils, waxes and slurries remaining in the weaving process during the fiber opening process, increasing the permeability and lubricity of the working fluid, reducing friction between fabrics, preventing cracking and wear marks, and also improving the product's acid, alkali, electrolyte and high temperature resistance stability. And there is no adverse effect on the equipment during the working fluid treatment process; secondly, an antacid is added, because the antacid has excellent heat resistance, chemical resistance, wear resistance and good mechanical properties, and has high environmental protection and safety. The optimum pH of the enzyme is generally 4.5-6.5. Acidic substances may affect its activity under strong acid conditions, especially the activity after long-term storage, thereby affecting its fiber opening effect. The antacid forms peripheral protection for the biological enzyme by changing the microenvironment of the biological enzyme, improves the pH stability of the enzyme, and enables it to maintain activity for a long time under acidic conditions; finally, a stabilizer is added. The addition of the stabilizer in the fiber opening agent provided by the present invention can improve the stability of the biological enzyme, change the solvent environment, and affect the charge distribution on the protein surface, thereby stabilizing the protein structure. This stabilization effect can improve the tolerance of the biological enzyme in this formula system to temperature and pH changes;

[0013] In summary, through the reasonable combination of the above-mentioned components, the bio-based Tencel fiber opening agent provided by the present invention can be used to achieve the fiber opening treatment of Tencel fabrics by a one-step one-bath method, and the effect is uniform and consistent, the treatment conditions are mild, the sewage discharge is small, the process time is short, and the temperature is low. It can not only greatly reduce energy consumption, but also achieve the optimal fiber opening effect while protecting the fiber strength, so that the Tencel fabric after the fiber opening treatment is easier to dye, and it also has the characteristics of green environmental protection and high safety.

[0014] Preferably, based on 100% total weight, the amounts of the various components contained in the bio-based Tencel fiber opening agent are as follows:

[0015]

[0016] Wherein, the dosage of the inorganic strong acid can be 0.5%, 0.6%, 0.7%, 0.9%, 1.1%, 1.3%, 1.5%, 1.7%, 1.9% or 2%, etc.

[0017] The amount of the organic acid can be 1%, 2%, 4%, 6%, 8%, 10%, 12%, 14%, 16%, 18% or 20%, etc.

[0018] As a preferred technical solution of the present invention, on the one hand, if the total amount of inorganic strong acid and organic acid is too low, it is easy to cause insufficient fiber opening, resulting in poor hand feel and poor subsequent dyeing and finishing effects; on the other hand, if the total amount of inorganic strong acid and organic acid is too high, the acidity of the fiber opening agent is too high, the activity of the biological enzyme is reduced during long-term storage, and the fiber opening treatment is prone to excessive fiber opening, which damages the fiber strength, affects the strength of the subsequent fabric, and is prone to breakage and holes.

[0019] The dosage of the biological enzyme can be 5%, 10%, 15%, 20%, 25%, 30% or 35%; on the one hand, if the dosage of the biological enzyme is less than 5%, it is easy to cause incomplete removal of the hairiness on the surface of the fabric, affecting the subsequent processing of the fabric; on the other hand, if the dosage of the biological enzyme is higher than 35%, it is easy to cause serious damage to the fiber strength, poor fabric strength, easy breakage and holes, and lead to excessively high raw material costs.

[0020] The bio-based surfactant may be used in an amount of 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9% or 10%, etc.

[0021] The dosage of the antacid can be 0.1%, 0.2%, 0.4%, 0.6%, 0.8%, 1%, 1.2%, 1.4%, 1.6%, 1.8% or 2, etc.

[0022] The amount of the stabilizer can be 3%, 5%, 7%, 9%, 11%, 13%, 15%, 17%, 19% or 20%, etc.

[0023] Preferably, the inorganic strong acid includes sulfuric acid and / or hydrochloric acid, and more preferably sulfuric acid.

[0024] Preferably, the organic acid comprises any one of citric acid, acetic acid or apple cider vinegar or a combination of at least two thereof, more preferably citric acid.

[0025] Preferably, the mass percentage of the biological enzyme in the bio-based Tencel fiber opener is 10-20%.

[0026] Preferably, the biological enzymes include cellulase and / or ligninase.

[0027] Preferably, the biological enzyme comprises any one of endo-β-glucanase, exo-β-glucanase, 3β-glucosidase, laccase or xylanase, or a combination of at least two thereof.

[0028] Preferably, the bio-based surfactant includes any one of tall oil modified bio-based surfactants, alkyl glycoside bio-based surfactants, cardanol polyoxyethylene ether bio-based surfactants or natural oil sulfonated oil bio-based surfactants, or a combination of at least two thereof, and is further preferably cardanol polyoxyethylene ether bio-based surfactants and / or natural oil sulfonated oil bio-based surfactants.

[0029] Preferably, the antacid comprises polyamideimide.

[0030] Preferably, the stabilizer comprises sodium chloride.

[0031] Preferably, the water comprises deionized water.

[0032] In a second aspect, the present invention provides a method for preparing the bio-based Tencel fiber opening agent as described in the first aspect, the preparation method comprising: mixing an acid agent, a biological enzyme, a bio-based surfactant, an antacid, a stabilizer and water to obtain the bio-based Tencel fiber opening agent.

[0033] Preferably, the preparation method specifically comprises: adding a stabilizer to water, stirring and mixing at 400-600 rpm (e.g., 400 rpm, 450 rpm, 500 rpm, 550 rpm or 600 rpm, etc.) for 20-40 min (e.g., 20 min, 25 min, 30 min, 35 min or 40 min, etc.), then adding a biological enzyme, a bio-based surfactant and an antacid, stirring at 400-600 rpm (e.g., 400 rpm, 450 rpm, 500 rpm, 550 rpm or 600 rpm, etc.), stirring and mixing ... Finally, the acid agent is added, and the stirring and mixing is continued at 400-600 rpm (for example, 400 rpm, 450 rpm, 500 rpm, 550 rpm or 600 rpm) for 10-30 min (for example, 10 min, 15 min, 20 min, 25 min or 30 min, etc.) to obtain the fiber opening agent.

[0034] In a third aspect, the present invention provides a method for using the bio-based Tencel fiber opening agent as described in the first aspect, the method comprising: soaking Tencel fabric in an aqueous solution of the bio-based Tencel fiber opening agent as described in the first aspect for fiber opening treatment, taking it out, and completing the use of the bio-based Tencel fiber opening agent.

[0035] The aqueous solution of the bio-based Tencel fiber opener is obtained by directly diluting the bio-based Tencel fiber opener with cold water.

[0036] Preferably, the concentration of the bio-based Tencel fiber opener in the aqueous solution of the bio-based Tencel fiber opener is 2 to 6 g / L, for example, 2 g / L, 2.5 g / L, 3 g / L, 3.5 g / L, 4 g / L, 4.5 g / L, 5 g / L, 5.5 g / L or 6 g / L, and more preferably 3 to 4 g / L.

[0037] Preferably, the bath ratio of the fiber opening treatment is 1:(3-20), for example, 1:3, 1:4, 1:5, 1:7, 1:9, 1:11, 1:13, 1:15, 1:17, 1:19 or 1:20, and more preferably 1:(10-15).

[0038] Preferably, the temperature of the fiber opening treatment is 50-80°C, for example, 50°C, 55°C, 60°C, 65°C, 70°C, 75°C or 80°C, and more preferably 55-65°C.

[0039] Preferably, the fiber opening treatment time is 30 to 60 min, for example, 30 min, 35 min, 40 min, 45 min, 50 min, 55 min or 60 min, etc., more preferably 30 to 45 min.

[0040] Preferably, the step of washing with cold water is also included after taking out.

[0041] In a fourth aspect, the present invention provides a fiber-opened Tencel fabric, wherein the fiber-opened Tencel fabric is obtained by fiber-opening treatment with the bio-based Tencel fiber-opening agent as described in the first aspect.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] The bio-based Tencel fiber opening agent provided by the present invention comprises an acid agent, a bio-enzyme, a bio-based surfactant, an antacid, a stabilizer and water. By combining the above components, the obtained bio-based Tencel fiber opening agent can be used to open the Tencel fabric by a one-step one-bath method, and the effect is uniform and consistent, the treatment conditions are mild, the sewage discharge is small, the process time is short, and the temperature is low. It can not only greatly reduce energy consumption, but also achieve the best fiber opening effect under the premise of protecting the fiber strength, so that the Tencel fabric after the fiber opening treatment is easier to dye, and it also has the characteristics of being green, environmentally friendly, and highly safe. DETAILED DESCRIPTION

[0044] The technical solution of the present invention is further described below by specific implementation methods. It should be understood by those skilled in the art that the embodiments are only to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0045] The following specific implementation methods involve some raw material information as follows:

[0046] (A) Acid

[0047] A-1: 98% concentrated sulfuric acid, produced by Sinopharm;

[0048] A-2: Citric acid, produced by Suzhou Xuhang.

[0049] (B) Biological enzymes

[0050] B-1: endo-β-glucanase, produced by Wuhan Wanrong;

[0051] B-2: exo-β-glucanase, produced by Wuhan Wanrong;

[0052] B-3: 3β-glucosidase, produced by Shanghai Hongshun Biological;

[0053] B-4: laccase, produced by Henan Kangzhiwang Biological;

[0054] B-5: xylanase, produced by Jiangsu Yihaotian Biological.

[0055] (C) Bio-based surfactants

[0056] C-1: Cardanol polyoxyethylene ether, produced by Changzhou Naisu Biological, brand name NSS1305;

[0057] C-2: Cardanol polyoxyethylene ether, produced by Changzhou Naisu Biological, brand name NSS1305A;

[0058] C-3: Cardanol polyoxyethylene ether, produced by Changzhou Naisu Biological, brand name NSS1308;

[0059] C-4: natural sulfonated oil, specifically natural sulfonated rapeseed oil, produced by Qingdao Incobio Biotechnology;

[0060] C-5: natural sulfonated oil, specifically natural sulfonated castor oil, produced by Zhuhai Tiantai;

[0061] C-6: Sulfonated natural oil, specifically sulfated natural neatsfoot oil, produced by Shanghai Chengde.

[0062] (D) Antacid: Polyamide-imide (PAI) emulsion, produced by Likalong, Dongguan City.

[0063] (E) Stabilizer: Sodium chloride (NaCl), produced by Changzhou Shanglian.

[0064] (F) Water: deionized water.

[0065] Examples 1 to 9 and Comparative Examples 1 to 5

[0066] Examples 1 to 9 and Comparative Examples 1 to 5 respectively provide a bio-based Tencel fiber opening agent, with a total mass of 100 g, and the components and amounts thereof are shown in Table 1 and Table 2;

[0067] In Tables 1 and 2, the dosage units of each component are "g";

[0068] Table 1

[0069]

[0070] Table 2

[0071]

[0072]

[0073] The preparation method of the bio-based Tencel fiber opening agent provided in Examples 1 to 9 and Comparative Examples 1 to 5 comprises the following steps:

[0074] After adding water to a 2kg stainless steel chemical barrel, add a stabilizer, start the mixer at a speed of 500 rpm, stir for 30 minutes, wait until the solid is completely dissolved, add the bio-enzyme, bio-based surfactant and antacid, continue to stir and homogenize at a speed of 500 rpm for 20 minutes, finally add the acid agent, continue to stir and homogenize at a speed of 500 rpm for 20 minutes, and obtain the bio-based Tencel fiber opening agent.

[0075] Performance Test:

[0076] (1) Storage stability of biological enzymes:

[0077] by The enzyme activity of OL-682 is used as the reference standard value, and the enzyme activity ratio of the bio-based Tencel fiber opener is calculated. The larger the ratio, the better the biological enzyme activity.

[0078] Storage environment: Store in a sealed container at 25°C in a cool environment. The enzyme activity test method refers to QB2583-2003. The enzyme activity ratio is calculated according to the following formula:

[0079]

[0080] Among them, U0 represents The enzyme activity of OL-682, U1 represents the enzyme activity of bio-based Tencel fiber opener.

[0081] The stability of the bio-based Tencel fiber opening agents provided in Examples 1 to 9 and Comparative Examples 1 to 5 at different storage times was tested according to the above test method, and the test results are shown in Table 3;

[0082] Table 3

[0083]

[0084]

[0085] (2) Fiber opening effect:

[0086] First, the Tencel fabric is subjected to a fiber-opening treatment, and the specific method includes: placing the Tencel fabric into an aqueous solution of a fiber-opening agent for fiber-opening, and taking it out to obtain the Tencel fabric after fiber-opening;

[0087] Among them, fiber opening process 1: bath ratio is 1:10, the concentration of fiber opening agent is 3g / L, the temperature is 60℃, and the treatment time is 30min; fiber opening process 2: bath ratio is 1:10, the concentration of fiber opening agent is 3g / L, the temperature is 80℃, and the treatment time is 45min;

[0088] Since Tencel fabric will lose weight during the fiber opening process, the weight loss rate (%) and weight change rate (%) are used to observe the changes of Tencel fabric before and after fiber opening to determine the degree of damage to the fabric. The weight loss rate and weight change rate are calculated according to the following formula:

[0089]

[0090] Where W0 and W1 represent the dry weight of Tencel fabric before and after fiber opening, respectively, and L a0 and L a1 Respectively represent the longitudinal length of Tencel fabric before and after fiber opening, L b0 and L b1 They represent the transverse lengths of the Tencel fabric before and after fiber opening;

[0091] Secondly, the opened Tencel fabric is dyed with reactive dyes; wherein the dyeing process is as follows: bath ratio is 1:20, reactive dye is 3BS 0.5% (owf), sodium sulfate is 60 g / L, and soda ash is 20 g / L; dyeing temperature is 60°C, and dyeing time is 45 min;

[0092] Finally, the dyeing effect of the open-fiber Tencel fabric was observed after dyeing. The color was measured with a DATACOLOR-800 colorimeter under D65 light source and 10° field of view. The K / S value (depth value) and EV value (uniformity) of the sample at the maximum absorption wavelength were recorded, and the average value of the four color measurement results was taken as the dyeing depth value and dyeing uniformity of the sample. Among them, the larger the K / S value, the deeper the dyeing depth; the smaller the EV value, the more uniform the dyed cloth surface.

[0093] The fiber opening agents provided in Examples 1 to 9 and Comparative Examples 1 to 5 were tested according to the above test method, and the test results are shown in Table 4;

[0094] Table 4

[0095]

[0096] From the data in Tables 3 and 4, we can see that:

[0097] The higher the temperature, the higher the weight loss rate of Tencel fabric after opening. The Tencel opening effect is significant, and the effect of strong acid sulfuric acid is more obvious than that of medium-strong acid citric acid. However, the suitable temperature of the enzyme is 50-60℃. As the temperature rises, the enzyme activity will decrease. At 80℃, the biological enzyme activity decreases, and there are colored defects on the surface of the fabric, which affects the EV.

[0098] The better the fiber opening effect, the larger the K / S value, the better the fabric dyeing depth, which means the higher the dye uptake; when the weight loss rate is close to or exceeds 20%, the unit area weight of the fabric is significantly reduced, the appearance and feel of the fabric tend to be silky, light and soft, and the rich, glutinous and delicate style of Tencel fabric will be lost.

[0099] The specific analysis is as follows:

[0100] ① After one year of storage, the enzyme activity change rate of the bio-based Tencel fiber opening agent provided in Examples 1 to 4 was less than 10%, and the enzyme activity ratio was still greater than 100, which can fully meet the production requirements for enzyme dosage and has a good fiber opening effect on Tencel fabrics.

[0101] ② Comparing the data of Example 1 and Examples 5 to 6, it can be seen that in Example 5, due to the relatively large amount of inorganic strong acid used, the acidity is enhanced, which in turn makes the enzyme activity change rate after one year of storage higher, the enzyme activity ratio is lower, the weight loss rate of the fabric after fiber opening increases, and the fiber opening effect becomes worse; while in Example 6, due to the relatively low amount of inorganic strong acid used, although the enzyme activity change rate is lower, it will lead to insufficient fiber opening of the Tencel fabric and too low dyeing depth.

[0102] ③ Comparing the data of Example 1 and Example 7, it can be seen that whether or not to add organic acid has little effect on the change of enzyme activity, but not adding organic acid will lead to poor fiber opening effect and reduced dyeing depth.

[0103] ④ Comparing the data of Example 1 and Examples 8 to 9, it can be seen that the dosage of the biological enzyme in Example 8 is relatively too low, resulting in a low enzyme activity ratio and a large EV value after fiber opening, which does not meet the product requirements; while the dosage of the biological enzyme in Example 9 is relatively too high, resulting in an excessively high enzyme activity ratio and an increased weight loss rate of the fabric after fiber opening, which also does not meet the product requirements, and the raw material cost is too high.

[0104] ⑤ Comparing the data of Example 1 and Comparative Examples 1 to 7, it can be seen that no acid agent was added in Comparative Example 1, resulting in the product being unable to open the fibers, the dyeing depth being too low, and not meeting the requirements; no biological enzyme was added in Comparative Example 2, resulting in an uneven surface of the fabric, colored spots, and a large EV value; no surfactant was added in Comparative Example 3, resulting in an uneven surface of the fabric, colored spots, and a large EV value; no antacid was added in Comparative Example 4, resulting in a too rapid decrease in enzyme activity and a large EV value; no stabilizer was added in Comparative Example 5, resulting in a too rapid decrease in enzyme activity.

[0105] The applicant declares that the present invention illustrates a bio-based Tencel fiber opening agent and its preparation method and application through the above-mentioned embodiments, but the present invention is not limited to the above-mentioned embodiments, that is, it does not mean that the present invention must rely on the above-mentioned embodiments to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. A bio-based Tencel fiber opening agent, characterized in that: The bio-based Tencel fiber opening agent comprises an acid agent, a biological enzyme, a bio-based surfactant, an antacid, a stabilizer and water.

2. The bio-based Tencel fiber opening agent according to claim 1, characterized in that: Based on the total weight of 100%, the amounts of the various components contained in the bio-based Tencel fiber opening agent are as follows:

3. The bio-based Tencel fiber opening agent according to claim 2, characterized in that: The inorganic strong acid includes sulfuric acid and / or hydrochloric acid, preferably sulfuric acid; Preferably, the organic acid comprises any one of citric acid, acetic acid or apple cider vinegar or a combination of at least two thereof, more preferably citric acid.

4. The bio-based Tencel fiber opening agent according to any one of claims 1 to 3, characterized in that: The mass percentage of the biological enzyme in the bio-based Tencel fiber opening agent is 10-20%; Preferably, the biological enzymes include cellulase and / or ligninase; Preferably, the biological enzyme comprises any one of endo-β-glucanase, exo-β-glucanase, 3β-glucosidase, laccase or xylanase, or a combination of at least two thereof.

5. The bio-based Tencel fiber opening agent according to any one of claims 1 to 4, characterized in that: The bio-based surfactant includes any one of tall oil modified bio-based surfactants, alkyl glycoside bio-based surfactants, cardanol polyoxyethylene ether bio-based surfactants or natural oil sulfonated oil bio-based surfactants, or a combination of at least two thereof, preferably cardanol polyoxyethylene ether bio-based surfactants and / or natural oil sulfonated oil bio-based surfactants; Preferably, the antacid comprises polyamideimide; Preferably, the stabilizer comprises sodium chloride; Preferably, the water comprises deionized water.

6. A method for preparing the bio-based Tencel fiber opening agent according to any one of claims 1 to 5, characterized in that: The preparation method comprises: mixing an acid agent, a biological enzyme, a bio-based surfactant, an antacid, a stabilizer and water to obtain the bio-based Tencel fiber opening agent.

7. The preparation method according to claim 6, characterized in that: The preparation method specifically comprises: adding a stabilizer into water, stirring and mixing at 400-600 rpm for 20-40 minutes, then adding a biological enzyme, a bio-based surfactant and an antacid, continuing to stir and mix at 400-600 rpm for 10-30 minutes, and finally adding an acid agent, continuing to stir and mix at 400-600 rpm for 10-30 minutes to obtain the bio-based Tencel fiber opening agent.

8. A method for using the bio-based Tencel fiber opening agent according to any one of claims 1 to 5, characterized in that: The method of use comprises: soaking the Tencel fabric in the aqueous solution of the bio-based Tencel fiber opening agent as claimed in any one of claims 1 to 5 for fiber opening treatment, taking it out, and completing the use of the bio-based Tencel fiber opening agent.

9. The method of use according to claim 8, characterized in that: The concentration of the bio-based Tencel fiber opener in the aqueous solution of the bio-based Tencel fiber opener is 2 to 6 g / L, preferably 3 to 4 g / L; Preferably, the bath ratio of the fiber opening treatment is 1:(3-20), more preferably 1:(10-15); Preferably, the temperature of the fiber opening treatment is 50 to 80°C, more preferably 55 to 65°C; Preferably, the fiber opening treatment time is 30 to 60 minutes, more preferably 30 to 45 minutes; Preferably, the step of washing with cold water is also included after taking out.

10. A fiber-opened Tencel fabric, characterized in that: The opened Tencel fabric is obtained by opening the fabric with the bio-based Tencel fiber opening agent as claimed in any one of claims 1 to 5.

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