Anti-ultraviolet modal fiber composite fabric and preparation method thereof

Abstract

The invention relates to an anti-ultraviolet modal fiber compound fabric and a preparation method thereof, and the compound fabric is prepared from the following raw materials in parts by weight: 35-40 parts of modified modal fiber yarns, 25-35 parts of cotton fiber yarns and 30-35 parts of polylactic acid fiber yarns; the modified modal fiber yarn is obtained after modal fiber yarn is subjected to padding treatment, and a padding solution used for padding treatment comprises a chitosan solution, a pawpaw extract, pectinase, polyethylene glycol, sweet orange essential oil and deionized water. The anti-ultraviolet modal fiber composite fabric is obtained by blending and spinning the modified modal fiber yarns, the cotton fiber yarns and the polylactic acid fiber yarns; wherein the modified modal fiber yarns are obtained by performing padding treatment on the modal fiber yarns by utilizing a padding solution containing substances such as chitosan, a papaya extract and pectinase, and verification proves that the ultraviolet resistance and the anti-pilling performance of the fabric can be remarkably improved by using the modified modal fiber yarns.

Description

Technical Field

[0001] The invention belongs to the technical field of fabrics, and particularly relates to an anti-ultraviolet modal fiber composite fabric and a preparation method thereof. Background Art

[0002] The damage of ultraviolet radiation to human skin has become a focus of public attention. Long-term exposure to ultraviolet rays can lead to skin aging, sunburn and even skin cancer. Therefore, the development of textiles with anti-ultraviolet function has important practical significance.

[0003] Modal fiber is a high wet modulus regenerated cellulose fiber with the advantages of being soft, smooth, and breathable. It is widely used in high-end clothing and household textiles. However, Modal fiber itself does not have UV resistance and is prone to pilling after repeated washing or friction, which limits its application in outdoor protective clothing. In order to prepare a modal fiber composite fabric with both UV resistance and anti-pilling properties, the present invention provides an anti-UV modal fiber composite fabric and a preparation method thereof. Summary of the Invention

[0004] The purpose of the present invention is to provide an anti-ultraviolet modal fiber composite fabric and a preparation method thereof in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] The present invention provides an anti-ultraviolet modal fiber composite fabric. The raw materials for preparing the composite fabric include, by weight, 35 to 40 parts of modified modal fiber yarn, 25 to 35 parts of cotton fiber yarn, and 30 to 35 parts of polylactic acid fiber yarn;

[0007] The modified modal fiber line is obtained by padding the modal fiber line, wherein the padding solution used in the padding treatment includes chitosan solution, papaya extract, pectinase, polyethylene glycol, sweet orange essential oil, and deionized water.

[0008] As a further optimized solution of the present invention, the padding solution includes, by weight, 18 to 25 parts of chitosan solution with a mass concentration of 5 g / L, 12 to 20 parts of papaya extract, 10 to 18 parts of pectinase, 16 to 20 parts of polyethylene glycol, 4 to 6 parts of sweet orange essential oil, and 21 to 30 parts of deionized water.

[0009] As a further optimization scheme of the present invention, the padding treatment is to dip and roll the modal fiber line in the padding solution twice at a temperature of 34 to 40°C, with a rolling rate of 80 to 90%, pre-baking for 5 to 10 minutes at a temperature of 60°C ± 2°C, and baking for 10 to 15 minutes at a temperature of 120°C ± 2°C, and then washing and drying.

[0010] As a further optimization scheme of the present invention, the method for obtaining the papaya extract is to grind the papaya fruit to obtain the papaya homogenate, subject it to ultrasonic extraction, centrifugal treatment, filter and ultrafilter the supernatant to obtain an ultrafiltration product, and then vacuum dry the ultrafiltration product and grind it into powder to obtain the papaya extract.

[0011] As a further optimization scheme of the present invention, ultrasonic extraction is specifically performed under a temperature condition of 6°C±2°C and 250-350W ultrasonic extraction for 15-18 minutes.

[0012] As a further optimization solution of the present invention, the centrifugal treatment is specifically performed at a temperature of 4°C±1°C and a speed of 5000-8000 r / min for 25-35 minutes.

[0013] As a further optimization scheme of the present invention, the filtration and ultrafiltration treatment is specifically as follows: the supernatant is first filtered through a filter with a pore size of 4 μm, and then ultrafiltered through an ultrafiltration membrane with a molecular weight cutoff of 9000 Da to obtain an ultrafiltration product.

[0014] The present invention also provides a method for preparing an UV-resistant modal fiber composite fabric, comprising the following steps: specifically, blending a modified modal fiber yarn, a cotton fiber yarn, and a polylactic acid fiber yarn to obtain a composite fiber yarn, and weaving the composite fiber yarn to obtain an UV-resistant modal fiber composite fabric.

[0015] The beneficial effects of the present invention are:

[0016] The present invention obtains an anti-ultraviolet modal fiber composite fabric by blending modified modal fiber yarn, cotton fiber yarn, and polylactic acid fiber yarn; wherein the modified modal fiber yarn is obtained by padding the modal fiber yarn with a padding solution containing substances such as chitosan, papaya extract, and pectinase. It has been verified that the use of the modified modal fiber yarn can significantly improve the anti-ultraviolet performance and anti-pilling performance of the fabric. DETAILED DESCRIPTION

[0017] 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.

[0018] 1. Materials

[0019] 1. Chitosan solution was prepared by dissolving 5 g of chitosan in 100 ml of 1% acetic acid solution; chitosan and 1% acetic acid solution were purchased from Sinopharm Chemical Reagent Co., Ltd.

[0020] 2. Pectinase was purchased from Sinopharm Chemical Reagent Co., Ltd., with an enzyme activity of 3.4 ± 0.3 U / mg;

[0021] 3. Papain was purchased from Shanghai Bio Biotechnology Co., Ltd., with an enzyme activity of 3.6±0.3U / mg;

[0022] 4. Tibetan papaya (Chaenomeles tibetica yu) is produced in Linzhi City, Tibet Autonomous Region.

[0023] 2. Methods

[0024] In order to explore the effects of modified modal fiber yarn on the UV resistance and anti-pilling properties of composite fabrics, Examples 1-5, a blank group, and Comparative Examples 1-7 were set as follows:

[0025] The preparation method of UV-resistant modal fiber composite fabric comprises the following steps:

[0026] (1) preparing a padding solution: mixing 18-25 parts of a chitosan solution having a mass concentration of 5 g / L, 12-20 parts of a papaya extract, 10-18 parts of a pectinase, 16-20 parts of polyethylene glycol, 4-6 parts of sweet orange essential oil, and 21-30 parts of deionized water to obtain a padding solution;

[0027] The papaya extract is obtained by grinding Tibetan papaya fruit to obtain a papaya homogenate, extracting it at 6°C±2°C (preferably 6°C) and 250-350W (preferably 320W) with ultrasonic force for 15-18 minutes (preferably 16 minutes), then centrifuging the slurry at 4°C±1°C (preferably 4°C) and 5000-8000r / min (preferably 7000r / min) for 25-35 minutes (preferably 30 minutes), collecting the supernatant, filtering it through a filter with a pore size of 4μm, and then ultrafiltration through an ultrafiltration membrane with a molecular weight cutoff of 9000Da to obtain an ultrafiltration product, vacuum drying it, and grinding it into a powder to obtain the papaya extract.

[0028] (2) Modifying the Modal fiber line by using a padding solution: the Modal fiber line is twice dipped and twice rolled in the padding solution at a temperature of 34 to 40° C. (preferably 35° C.), with a rolling rate of 80 to 90% (preferably 87%), pre-baked at a temperature of 60° C.±2° C. for 5 to 10 minutes (preferably 8 minutes), and baked at a temperature of 120° C.±2° C. for 10 to 15 minutes (preferably 12 minutes) to obtain a modified Modal fiber line;

[0029] (3) Weaving to obtain UV-resistant modal fiber composite fabric: modified modal fiber yarn, cotton fiber yarn, and polylactic acid fiber yarn are blended in proportion (35-40 parts of modified modal fiber yarn, 25-35 parts of cotton fiber yarn, and 30-35 parts of polylactic acid fiber yarn) to obtain composite fiber yarn, and the composite fiber yarn is used to weave the UV-resistant modal fiber composite fabric; the surface density of the UV-resistant modal fiber composite fabric is 137 g / m 2 ±5g / m 2 (The surface density of the following examples 1-5, blank group and comparative example 1-7 groups is 137g / m 2 ±5g / m 2 ).

[0030] The difference between Examples 1-3 is only the different composition ratios of the padding solutions, as shown in Table 1:

[0031] Table 1 Component ratios of the composite fabrics and the padding solutions of Examples 1-3

[0032]

[0033] Example 4

[0034] In this embodiment, an anti-ultraviolet modal fiber composite fabric is provided. The raw materials for preparing the composite fabric include, by weight, 37 parts of modified modal fiber yarn, 33 parts of cotton fiber yarn, and 30 parts of polylactic acid fiber yarn; the rest are consistent with Example 2.

[0035] Example 5

[0036] In this embodiment, an anti-ultraviolet modal fiber composite fabric is provided. The raw materials for preparing the composite fabric include, by weight, 40 parts of modified modal fiber yarn, 30 parts of cotton fiber yarn, and 30 parts of polylactic acid fiber yarn; the rest are consistent with Example 2.

[0037] Blank group

[0038] In this blank group, a UV-resistant modal fiber composite fabric is prepared, wherein the raw materials for preparing the composite fabric include, by weight, 37 parts of modal fiber yarn, 33 parts of cotton fiber yarn, and 30 parts of polylactic acid fiber yarn; the only difference from Example 4 is that the modified modal fiber yarn is replaced by an equal weight portion of modal fiber yarn.

[0039] Comparative Example 1

[0040] In this comparative example, the only difference from Example 4 is that the papaya extract is replaced by deionized water in equal parts by weight; the rest remains the same as in Example 4.

[0041] Comparative Example 2

[0042] In this comparative example, the only difference from Example 4 is that pectinase is replaced by deionized water in equal parts by weight; the rest remains the same as in Example 4.

[0043] Comparative Example 3

[0044] In this comparative example, the only difference from Example 4 is that papaya extract is replaced by papain in equal parts by weight; the rest remains the same as in Example 4.

[0045] Comparative Example 4

[0046] In this comparative example, the only difference from Example 4 is that papain was used in equal parts by weight to replace papaya extract and pectinase (papain in equal parts by weight to papaya extract replaced papaya extract; papain in equal parts by weight to pectinase replaced pectinase), and the rest remained consistent with Example 4.

[0047] Comparative Example 5

[0048] In this comparative example, the only difference from Example 4 is that pectinase is replaced by an equal weight portion of papaya extract; the rest remains the same as Example 4.

[0049] Comparative Example 6

[0050] In this comparative example, the only difference from Example 4 is that the papaya extract is replaced by an equal weight portion of pectinase; the rest remains the same as Example 4.

[0051] Comparative Example 7

[0052] In this comparative example, a UV-resistant modal fiber composite fabric is provided. The raw materials for preparing the composite fabric include, by weight, 37 parts of modal fiber yarn, 33 parts of modified cotton fiber yarn, and 30 parts of polylactic acid fiber yarn. The modification method of the cotton fiber yarn is consistent with the modification method of the modal fiber yarn in Example 4 (the padding solution is also consistent with that in Example 4).

[0053] 3. Experiment

[0054] 3.1. Anti-ultraviolet performance test

[0055] The UV protection effect of the composite fabrics prepared in Examples 1-5, a blank group, and Comparative Examples 1-7 was tested using a UV-2000F textile anti-ultraviolet factor tester. According to the standard GB / T 18830-2009 "Evaluation of the UV Protection Performance of Textiles", five points were taken at different locations on each sample to test the transmittance of ultraviolet light with a wavelength of 200-400 nm (TUVA) and the ultraviolet protection factor (UPF) as evaluation criteria for ultraviolet protection performance. Only when the UVA transmittance is less than 5% can it be called an "ultraviolet protection product".

[0056] The higher the UPF value, the better the UV protection performance. Usually, when the UPF value is greater than 40, it means that the fabric has excellent UV protection performance. The test results are shown in Table 2:

[0057] Table 2 Test results of UV resistance of each sample

[0058]

[0059] Experimental conclusion: It can be seen from the above data that the composite fabric of Example 4 has the best anti-ultraviolet performance, and after the modal fiber line is impregnated with a padding solution containing chitosan, papaya extract, and pectinase, the anti-ultraviolet performance of the fabric can be significantly improved. However, after the cotton fiber line is impregnated with a padding solution containing papaya extract and pectinase, the improvement in the anti-ultraviolet performance of the fabric is small. It is speculated that papaya extract and pectinase may have specificity with modal fiber.

[0060] 3.2 Anti-pilling performance test

[0061] Pilling tests were conducted in accordance with GB / T4802.3-2008 "Test Method for Fabric Pilling: Pilling Box Method". At room temperature, each sample was washed in clean water in a washing machine for 60 hours, and then ground 2000 times on a YG(B)511-II rolling box pilling tester. The ground samples were compared with standard samples to determine the pilling degree of the samples. The pilling degree is divided into five levels: 1, 2, 3, 4, and 5. If the level is between two levels, half a level is recorded, such as 1.5, 2.5, 3.5, and 4.5. The smaller the level, the more serious the fabric pilling, and the larger the level, the better the anti-pilling performance. The specific results are shown in Table 3:

[0062] Table 3 Anti-pilling performance test results of each sample

[0063]

[0064]

[0065] Experimental conclusion: It can be seen from the above data that the anti-pilling performance test result of the composite fabric of Example 4 is grade 4, which is the highest among the examples and comparative examples. Example 4 is a fabric with significantly improved anti-pilling performance after the modal fiber line is padded with a padding solution containing chitosan, papaya extract, and pectinase. It was later verified that the padding solution is specifically used to treat the modal fiber to enable the composite fabric to have high anti-pilling performance, indicating that the padding solution containing papaya extract and pectinase has a significant effect on improving the anti-pilling performance of the modal fiber.

[0066] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A UV-resistant modal fiber composite fabric, characterized by: The raw materials for preparing the composite fabric include, by weight, 35 to 40 parts of modified modal fiber yarn, 25 to 35 parts of cotton fiber yarn, and 30 to 35 parts of polylactic acid fiber yarn; The modified modal fiber line is obtained by padding the modal fiber line, wherein the padding solution used in the padding treatment includes chitosan solution, papaya extract, pectinase, polyethylene glycol, sweet orange essential oil, and deionized water.

2. The UV-resistant modal fiber composite fabric according to claim 1, characterized in that: The padding solution comprises, by weight, 18 to 25 parts of chitosan solution with a mass concentration of 5 g / L, 12 to 20 parts of papaya extract, 10 to 18 parts of pectinase, 16 to 20 parts of polyethylene glycol, 4 to 6 parts of sweet orange essential oil, and 21 to 30 parts of deionized water.

3. The UV-resistant modal fiber composite fabric according to claim 1, characterized in that: The padding treatment comprises dipping and padding the modal fiber line in a padding solution at a temperature of 34-40° C., with a padding rate of 80-90%, pre-baking at a temperature of 60° C.±2° C. for 5-10 minutes, and baking at a temperature of 120° C.±2° C. for 10-15 minutes.

4. The UV-resistant modal fiber composite fabric according to claim 1, characterized in that: The papaya extract is obtained by grinding Tibetan papaya fruits to obtain papaya homogenate, subjecting it to ultrasonic extraction and centrifugal treatment, filtering and ultrafiltration of the supernatant to obtain an ultrafiltration product, and vacuum drying the ultrafiltration product and grinding it into powder to obtain the papaya extract.

5. The UV-resistant modal fiber composite fabric according to claim 4, characterized in that: The ultrasonic extraction is specifically carried out under the temperature condition of 6°C±2°C and 250-350W ultrasonic extraction for 15-18 minutes.

6. The UV-resistant modal fiber composite fabric according to claim 4, characterized in that: The centrifugation treatment is specifically performed at a temperature of 4°C ± 1°C and a speed of 5000-8000 r / min for 25-35 minutes.

7. The UV-resistant modal fiber composite fabric according to claim 4, characterized in that: Specifically, the supernatant was filtered through a filter with a pore size of 4 μm, and then ultrafiltered through an ultrafiltration membrane with a molecular weight cutoff of 9000 Da to obtain an ultrafiltration product.

8. A method for preparing the UV-resistant modal fiber composite fabric according to any one of claims 1 to 7, characterized in that: The specific steps are: modified modal fiber yarn, cotton fiber yarn and polylactic acid fiber yarn are blended to obtain composite fiber yarn, and the composite fiber yarn is used to weave the anti-ultraviolet modal fiber composite fabric.

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