Wool fabric anti-pilling finishing agent and preparation method thereof

Abstract

The invention provides a wool fabric anti-pilling finishing agent and a preparation method, and relates to the field of fabric finishing agents, the wool fabric anti-pilling finishing agent comprises a dry material and a wet material, the dry material is obtained by adding a seaweed extract and oleuropein into a mixture of sericin and water and performing microwave treatment, low-temperature drying treatment and crushing treatment on the mixture, and the wet material is obtained by adding the seaweed extract and the oleuropein into the mixture. The wet material is obtained by mixing tea polyphenol, oleanolic acid and water. The anti-pilling finishing agent for the wool fabric, provided by the invention, is prepared from the sericin, the seaweed extract, the oleuropein, the tea polyphenol and the oleanolic acid materials, and the application of the natural materials not only is environment-friendly, but also can enhance the mechanical properties of the wool fabric while improving the anti-pilling property and the antistatic property of the wool fabric; after the anti-pilling finishing agent for the wool fabric is applied to the wool fabric, the wool fabric has the anti-pilling property and the durability.

Description

Technical Field

[0001] The invention belongs to the technical field of fabric finishing agents, and particularly relates to an anti-pilling finishing agent for wool fabrics and a preparation method thereof. Background Art

[0002] Wool fabrics have a soft feel and excellent curl, but they are also more prone to pilling. The finer the wool material, the denser the surface scales. This fine structure makes it easier for wool fibers to entangle with each other, which is one of the causes of pilling. Furthermore, the structure of wool fabrics also affects their pilling properties. For example, fine fibers are more prone to pilling than coarse fibers, and blended fibers are more prone to pilling than other single fibers. When wool fabrics are worn, they come into contact with various surfaces, generating friction. This friction causes the scales on the fiber surface to connect and entangle, ultimately forming pilling. Pilling is particularly noticeable in areas of frequent friction, such as sleeves and pocket openings.

[0003] To this end, wool fabric finishing agents such as water-based polyurethane wool shrinkage preventer, concentrated mercerized wool smoothing agent, wool mercerized smoothing agent SX281, wool mercerized smoothing and softening finishing agent are usually used to make the surface of wool fabric smoother, reduce friction, and reduce the risk of pilling.

[0004] However, the use of these wool finishing agents can cause some damage to wool fibers. While they can improve the feel, gloss, and smoothness of wool fabrics in the short term, long-term use or improper handling can weaken or break wool fibers. Furthermore, for optimal results, these finishing agents typically require specific temperature, pH, and concentration conditions. Improper handling conditions can further damage wool fibers. Furthermore, these finishing agents all suffer from poor biodegradability. Summary of the Invention

[0005] The purpose of the present invention is to provide an anti-pilling finishing agent for wool fabrics and a preparation method in order to solve the above problems.

[0006] The present invention achieves the above-mentioned purpose through the following synthesis process and technical scheme:

[0007] The present invention provides an anti-pilling finishing agent for wool fabrics, which comprises a dry material and a wet material;

[0008] The dry material is obtained by adding sea antler extract and oleuropein to a mixture of sericin and water, and then subjecting the mixture to microwave treatment, low-temperature drying treatment and pulverization treatment;

[0009] The wet material is obtained by mixing tea polyphenols, oleanolic acid and water.

[0010] As a further optimization solution of the present invention, the raw materials for preparing the dry material include, by weight, 6-14 parts of sericin, 12-18 parts of sea moss extract, 5-9 parts of oleuropein and 20-35 parts of water.

[0011] As a further optimized solution of the present invention, the wet material comprises 5-15% tea polyphenols, 3-8% oleanolic acid, and the balance is deionized water, calculated by mass percentage.

[0012] As a further optimization solution of the present invention, the mass ratio of dry material to wet material is 3:(5-7).

[0013] As a further optimization solution of the present invention, the sea antler extract is an enzymatic hydrolysis extract of the sea antler.

[0014] As a further optimization scheme of the present invention, the preparation process of the enzymatic hydrolysis extract of the sea antler is as follows: the dried sea antler is processed into powder, sea antler powder and pepsin are added to the acetic acid aqueous solution, wherein the mass ratio of sea antler powder, pepsin and acetic acid aqueous solution is 7:2:13, after being fully stirred in a constant temperature water bath at 25-30°C, the obtained mixed solution is centrifuged, and the supernatant is collected as the sea antler extract.

[0015] The present invention also provides a method for preparing an anti-pilling finishing agent for wool fabrics, comprising the following steps:

[0016] S1. Dissolve sericin in water, shake on a shaker for 30-50 minutes, then add sea antler extract and oleuropein, stir thoroughly, and then microwave-treat the resulting mixture. Then, perform low-temperature drying and pulverization on the microwave-treated product to obtain a dry material.

[0017] S2. Evenly mixing tea polyphenols, oleanolic acid and water to obtain a wet material;

[0018] S3. Heat the wet material to 30-35°C, then add the dry material into the wet material, and stir thoroughly to obtain the anti-pilling finishing agent.

[0019] As a further optimization scheme of the present invention, in S1, the temperature of the microwave treatment is 55-65°C, the duration is 1.5-3 minutes, the temperature of the low-temperature drying treatment is -45°C--30°C, and the drying time is 40-80 minutes.

[0020] The beneficial effects of the present invention are:

[0021] The anti-pilling finishing agent for wool fabric provided by the present invention is prepared from sericin, sea antler extract, oleuropein, tea polyphenols, and oleanolic acid. The use of natural materials avoids pollution to the environment and greatly reduces damage to wool fibers caused by the application of the anti-pilling finishing agent for wool fabric. Therefore, after the anti-pilling finishing agent is used to impregnate wool fabric, it can not only improve the anti-pilling performance and antistatic performance of the wool fabric, but also enhance the mechanical properties of the wool fabric, so that the wool fabric has both anti-pilling and durability.

[0022] Specifically, a dry material made from materials such as sericin, sea antler extract, and oleuropein, after being dissolved in a wet material, can penetrate into the wool fibers and coat the surface of the wool fibers. This not only smoothes the scales on the wool fiber surface but also forms a protective layer for the wool fibers, thereby reducing the probability of wool fiber clumping, breakage, and static electricity generated by friction. A wet material containing tea polyphenols and oleanolic acid, after being mixed with the dry material, can modify the wool fibers immersed in it. This modification is also carried out during the formation of the wool fiber protective layer, which not only facilitates the penetration of the active ingredients into the wool fibers, thereby strengthening the connection between the protective layer and the wool fibers, but also enhances the mechanical properties of the wool fibers and the protective layer, further improving the durability of the wool fabric. DETAILED DESCRIPTION

[0023] The present application is described in further detail below. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0024] 1. Materials

[0025] (1) Sericin, purchased from Xi'an Bencapsule Biotechnology Co., Ltd.;

[0026] (2) Hairong, purchased from Guangzhou Huaze Supply Chain Management Center;

[0027] (3) Oleuropein, purchased from Shaanxi Yizhimin Plant Technology Co., Ltd.;

[0028] (4) Tea polyphenols, purchased from Shanghai Quanyan Biotechnology Co., Ltd.;

[0029] (4) Oleanolic acid, purchased from Chengdu Zhumo Technology Co., Ltd.;

[0030] (5) Pepsin solution was purchased from Shanghai Shangbao Biotechnology Co., Ltd.

[0031] Unless otherwise specified, the methods used in this example are conventional methods known to those skilled in the art, and the reagents and other materials used are commercially available products unless otherwise specified.

[0032] 2. Methods

[0033] 1. Efficacy testing of anti-pilling finishing agents

[0034] (1) Preparation of anti-pilling finishing agent

[0035] Example 1

[0036] A method for preparing an anti-pilling finishing agent for wool fabrics comprises the following steps:

[0037] S1. Preparing a safflower extract: Processing the dried safflower into a powder, adding safflower powder and pepsin to an acetic acid aqueous solution, wherein the mass ratio of safflower powder, pepsin, and acetic acid aqueous solution is 7:2:13, and stirring the mixture in a constant temperature water bath at 25°C. Centrifuging the mixture and collecting the supernatant as the safflower extract;

[0038] S2. Take 14 parts of sericin, 12 parts of antler extract, 5 parts of oleuropein, and 35 parts of water, by weight, dissolve the sericin in water, shake on a shaker for 30 minutes, then add the antler extract and oleuropein, stir thoroughly, and microwave the resulting mixture at 55° C. for 3 minutes. Then, perform low-temperature drying and pulverization on the microwave-treated product to obtain a dry material. The low-temperature drying temperature is -45° C. and the drying time is 40 minutes.

[0039] S3, preparing a wet material, wherein, by mass percentage, it comprises 5% tea polyphenols, 3% oleanolic acid, and the balance is deionized water;

[0040] S4. Heat the wet material to 30° C., then add the dry material into the wet material with a mass ratio of dry material to wet material being 3:5. Stir thoroughly to obtain an anti-pilling finishing agent.

[0041] Example 2

[0042] A method for preparing an anti-pilling finishing agent for wool fabrics comprises the following steps:

[0043] S1. Preparation of sea antler extract: the method is the same as that in Example 1;

[0044] S2. Take 6 parts of sericin, 18 parts of antler extract, 9 parts of oleuropein, and 20 parts of water by weight, dissolve the sericin in water, shake on a shaker for 50 minutes, then add the antler extract and oleuropein, stir thoroughly, microwave the mixture at 65°C for 1.5 minutes, and then perform low-temperature drying and pulverization on the microwave-treated product to obtain a dry material. The low-temperature drying temperature is -30°C and the drying time is 80 minutes.

[0045] S3, preparing a wet material, wherein, by mass percentage, it comprises 15% tea polyphenols, 8% oleanolic acid, and the balance is deionized water;

[0046] S4. Heat the wet material to 35° C., then add the dry material into the wet material with a mass ratio of dry material to wet material being 3:7. Stir thoroughly to obtain an anti-pilling finishing agent.

[0047] Example 3

[0048] A method for preparing an anti-pilling finishing agent for wool fabrics comprises the following steps:

[0049] S1. Preparation of sea antler extract: the method is the same as that in Example 1;

[0050] S2. Taking 11 parts of sericin, 16 parts of antler extract, 7 parts of oleuropein, and 30 parts of water by weight, dissolve the sericin in water, shake on a shaker for 40 minutes, then add the antler extract and oleuropein, stir thoroughly, and microwave the resulting mixture at 50° C. for 1.5-3 minutes. The microwave-treated product is then subjected to low-temperature drying and pulverization in sequence to obtain a dry material. The low-temperature drying temperature is -40° C. and the drying time is 60 minutes.

[0051] S3, preparing a wet material, wherein, by mass percentage, it comprises 11% tea polyphenols, 6% oleanolic acid, and the balance is deionized water;

[0052] S4. Heat the wet material to 32° C., then add the dry material into the wet material with a mass ratio of dry material to wet material being 1:2. Stir thoroughly to obtain an anti-pilling finishing agent.

[0053] (2) Efficacy testing

[0054] Use 100% wool content fabric as the test object, and cut several fabrics of equal size as samples;

[0055] The anti-pilling finishing agent was diluted to 20 times its volume, and the sample was impregnated with the diluted anti-pilling finishing agent to obtain a sample fabric.

[0056] The sample fabrics corresponding to the anti-pilling finishing agents in Examples 1-3 were prepared through the above operations. The samples were treated with wool mercerizing smoothing agent SX281 to obtain sample fabrics of control group 1. The untreated samples were taken as sample fabrics of control group 2.

[0057] The sample fabrics corresponding to Examples 1-3 and Control Groups 1 and 2 were tested for pilling rate. The testing method was as follows: referring to the standard set forth in GB / T4802.3-2008 "Test Method for Fabric Pilling—Pilling Box Method", the sample fabric was weighed once at room temperature, recorded as M1, and the sample fabric was washed 20 times according to the standard machine washing procedure set by AATCC. The sample fabric was then placed on a YG(B)511-II roller pilling tester for 5000 times, and then a comb was used to remove the pills on the sample fabric. Finally, the fabric was weighed a second time, recorded as M2, and the pilling rate of the sample fabric was calculated based on M1 and M2. The calculation formula is: pilling rate = [(M1-M2) / M1] × 100%.

[0058] The test results of the sample fabrics corresponding to Examples 1-3 and the blank control group are shown in the following table:

[0059]

[0060] From the table above we can see that:

[0061] (1) The pilling rates of the sample fabrics corresponding to Examples 1-3 are all lower than those of Control Groups 1 and 2, that is, the pilling rates of the wool fabrics treated with the anti-pilling finishing agent provided by the present invention are not only lower than those of the untreated wool fabrics, but also lower than those of the wool fabrics treated with the wool mercerizing smoothing agent SX281. The results show that the anti-pilling finishing agents in Examples 1-3 can effectively improve the anti-pilling performance of the wool fabrics and reduce the pilling rate of the fabrics after being used to impregnate the wool fabrics. That is, the anti-pilling finishing agent provided by the present invention has the effect of improving the anti-pilling performance of the wool fabrics, and the improvement effect is slightly better than that of the existing wool mercerizing smoothing agent SX281.

[0062] (2) According to the data comparison of Examples 1-3, it can be seen that the ratio of various raw materials in the wet material and the dry material will affect the use effect of the anti-pilling finishing agent. Based on the data in the above table, the ratio in Example 3 is taken as the optimal ratio.

[0063] In order to further explore the comprehensive effect of the anti-pilling finishing agent provided by the present invention on wool fabrics, multiple performance tests were performed on the sample fabrics corresponding to Example 3, Control Group 1, and Control Group 2. The test items and specific methods are as follows:

[0064] ① Tensile strength test: Cut the sample fabric in half into two long strips. Wash one of the strips 20 times according to the standard machine wash procedure set by AATCC. Then, use a Q800 dynamic mechanical analyzer to test the two sample fabrics in sequence. Set the analyzer frequency to 1Hz and apply stress gradually increasing from 0 at a rate of 5MPa / s. Record the stress change of the sample fabric until the sample breaks. The stress at the breaking point is taken as the sample tensile strength.

[0065] ② Antistatic performance test: According to GB / T 12703.1-2021 "Textiles-Test methods for electrostatic properties Part 1: Corona charging method", the antistatic performance of each sample fabric was tested separately, and the static voltage half-life was used as the test index (excellent: half-life ≤ 10s, good: 10 < half-life ≤ 30, general: 30 < half-life ≤ 60, poor: > 60s).

[0066] The test results are shown in the following table:

[0067]

[0068] It can be seen from the above table that compared with untreated wool fabric, the tensile strength of the wool fabric treated with the wool mercerizing smoothing agent SX281 decreases, while the tensile strength and antistatic properties of the wool fabric treated with the anti-pilling finishing agent provided by the present invention are improved. This result shows that the anti-pilling finishing agent provided by the present invention can not only improve the anti-pilling performance of the wool fabric, but also effectively improve the mechanical properties of the wool fabric, thereby achieving the comprehensive effect of improving the durability of the wool fabric.

[0069] In order to further explore the specific effect of the anti-pilling finishing agent provided by the present invention on wool fabrics, the influence of the composition of dry material and wet material on the efficacy of the anti-pilling finishing agent was further detected.

[0070] 2. The influence of the composition of anti-pilling finishing agent on its efficacy

[0071] (1) Based on Example 3, only the ratio of each component in the dry material was adjusted to set Comparative Examples 1 and 2, wherein the specific ratio of the dry material in each group is shown in the following table:

[0072]

[0073] (2) Based on Example 3, S1 was omitted and the sea antler extract used in S2 was replaced with sea antler water extract, and Comparative Example 3 was set, wherein the preparation method of the sea antler water extract was as follows: the dried sea antler was processed into powder, water was added to the sea antler powder at a mass ratio of 1:5, after fully soaking, the mixture was stirred for 2 hours under the condition of heating in a water bath at 45°C, and finally the mixture was centrifuged, and the supernatant after centrifugation was taken as the sea antler water extract.

[0074] (3) Based on Example 3, only the ratio of each component in the wet material was adjusted to set Comparative Examples 4 and 5, wherein the ratio of tea polyphenols and oleanolic acid in each group of wet materials is shown in the following table:

[0075]

[0076]

[0077] Note: “-” in the table means no addition.

[0078] The anti-pilling finishing agents obtained in Comparative Examples 1-5 were used to prepare corresponding sample fabrics. The preparation method was the same as above. The pilling rate, tensile strength and antistatic performance tests were performed on the corresponding sample fabrics in each group. The test methods were the same as above:

[0079] The test results are shown in the following table:

[0080]

[0081] From the table above we can see that:

[0082] (1) Comparative Examples 1 and 2, since oleuropein and safflower extract were removed from the dry material formula respectively, the corresponding sample fabrics had a higher pilling rate, worse tensile strength, and worse antistatic effect than the sample fabric of Example 3. Among them, the difference in antistatic effect was particularly significant. This result shows that the formula of mixing safflower extract and oleuropein used in the present invention can not only improve the mechanical properties of wool fabrics, but also significantly improve the antistatic performance of wool fabrics. It is inferred that the reason is that the various effective ingredients in safflower extract, mainly collagen, interact with oleuropein in the process of modifying wool fibers and smoothing scales on the surface of wool fibers, thereby forming a protective layer on the surface of wool fibers, effectively enhancing the improvement effect of the anti-pilling finishing agent on the antistatic performance of wool fabrics;

[0083] (2) Comparative Examples 4 and 5, since oleanolic acid and tea polyphenols were removed from the wet material formula respectively, the corresponding sample fabrics had a higher pilling rate, worse tensile strength, and worse antistatic effect than the sample fabric of Example 3. Among them, the most significant thing is that the tensile strength of the sample fabrics corresponding to Comparative Examples 3 and 4 decreased by more than 40% after washing, which is much higher than the 9.4% of Example 3. This result shows that in the anti-pilling finishing agent for wool fabric provided by the present invention, the mixing of oleanolic acid and tea polyphenols can significantly enhance the improvement effect of the anti-pilling finishing agent on the water-resistant performance of wool fabric. It is inferred that the reason is that based on the anti-pilling finishing agent formula provided by the present invention, the mixing of oleanolic acid and tea polyphenols can modify both the wool fiber and the protective layer on its surface, so that the wool fiber and the protective layer can be tightly combined while retaining their own structural strength, thereby achieving the effect of improving the mechanical properties of the wool fabric.

[0084] The above embodiment merely represents one embodiment of the present invention. While the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the scope of the present invention, and such modifications and improvements are all within the scope of protection of the present invention.

Claims

1. An anti-pilling finishing agent for wool fabrics, characterized in that: The anti-pilling finishing agent for wool fabrics includes dry material and wet material; The dry material is obtained by adding sea antler extract and oleuropein to a mixture of sericin and water, and then subjecting the mixture to microwave treatment, low-temperature drying treatment, and pulverization treatment; The wet material is obtained by mixing tea polyphenols, oleanolic acid and water.

2. The anti-pilling finishing agent for wool fabric according to claim 1, characterized in that: By weight, the raw materials for preparing the dry material include 6-14 parts of sericin, 12-18 parts of sea moss extract, 5-9 parts of oleuropein and 20-35 parts of water.

3. The anti-pilling finishing agent for wool fabric according to claim 1, characterized in that: Calculated by mass percentage, the wet material includes 5-15% tea polyphenols, 3-8% oleanolic acid, and the balance is deionized water.

4. The anti-pilling finishing agent for wool fabric according to claim 1, characterized in that: The mass ratio of the dry material to the wet material is 3:(5-7).

5. The anti-pilling finishing agent for wool fabric according to claim 1, characterized in that: The sea antler extract is an enzymatic hydrolysis extract of sea antler.

6. The anti-pilling finishing agent for wool fabric according to claim 5, characterized in that: The preparation process of the sea antler enzymatic hydrolysis extract is as follows: processing the dried sea antler into powder, adding sea antler powder and pepsin to an acetic acid aqueous solution, wherein the mass ratio of sea antler powder, pepsin and acetic acid aqueous solution is 7:2:13, after fully stirring in a constant temperature water bath at 25-30°C, the obtained mixed solution is centrifuged, and the supernatant is collected as the sea antler extract.

7. A method for preparing the anti-pilling finishing agent for wool fabric according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Dissolve sericin in water, shake on a shaker for 30-50 minutes, then add sea antler extract and oleuropein, stir thoroughly, and then microwave-treat the resulting mixture. Then, perform low-temperature drying and pulverization on the microwave-treated product to obtain a dry material. S2. Evenly mixing tea polyphenols, oleanolic acid and water to obtain a wet material; S3. Heat the wet material to 30-35°C, then add the dry material into the wet material, and stir thoroughly to obtain the anti-pilling finishing agent.

8. The method for preparing an anti-pilling finishing agent for wool fabric according to claim 7, characterized in that: In S1, the temperature of the microwave treatment is 55-65° C., the duration is 1.5-3 min, and the temperature of the low-temperature drying treatment is -45° C.--30° C., the drying time is 40-80 min.

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