Skin-friendly and wrinkle-resistant fabric and preparation method thereof

Abstract

The present invention belongs to the field of anti-wrinkle finishing technology, and provides a skin-friendly anti-wrinkle fabric and a preparation method thereof, wherein the components and their mass concentrations in the anti-wrinkle finishing liquid are: 50-75g / L tetracarboxylic acid ethylenedithiol disuccinate ether, 8-12g / L trimethylolpropane, 30-70g / L catalyst, 0.6-2g / L N, N'-bis-palmitoyl ethylenediamine sodium diacetate, 0.4-0.8g / L hexadecyltrimethylammonium bromide, 2-4g / L cerium sulfate, and the solvent is water; the preparation method of the skin-friendly anti-wrinkle fabric is to immerse cotton fabric in the anti-wrinkle finishing liquid for anti-wrinkle padding, pre-baking and baking. The anti-wrinkle finishing liquid of the present invention is cheaper and easier to obtain than butanetetracarboxylic acid BTCA. After being finished with the finishing liquid of the present invention, the tensile breaking strength of the cotton fabric can be significantly improved, which significantly improves the strength reduction problem of the current anti-wrinkle finishing fabric, and has broad application prospects and market prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-wrinkle finishing, and in particular to a skin-friendly anti-wrinkle fabric and a preparation method thereof. Background Art

[0002] Cotton fabric is the most important natural fiber in the textile industry. It boasts excellent softness, moisture absorption, breathability, comfort, and skin-friendliness, making it widely used in clothing, decorative fabrics, and industrial fabrics. However, pure cotton fabric also suffers from poor wrinkle resistance. It easily wrinkles during dyeing and finishing, as well as during daily wear, and its smooth appearance cannot be maintained, affecting its performance and the consumer's wearing experience.

[0003] Cotton fabrics wrinkle easily because cotton fibers consist of two distinct regions: crystalline and amorphous. The crystalline region accounts for approximately two-thirds of the total fiber. The crystalline region has a high degree of lateral order, with tightly packed, regularly arranged macromolecular chains. This region can deform slightly under the influence of external forces or water molecules, but recovers upon removal. In contrast, the amorphous region has a relatively low degree of lateral order, resulting in weaker hydrogen bonds. This leads to hydrogen bond breakage and relative slippage of macromolecular chains under the influence of external forces and water molecules, resulting in hydrogen bonds being re-formed at new hydroxyl sites. Even after the force is removed, these chains are difficult to return to their original positions, resulting in wrinkles. Anti-wrinkle finishing of cotton fabrics is an essential functional finishing method for improving their wearability. Chemical crosslinking is the most common method for anti-wrinkle finishing of cotton fabrics. This method achieves its wrinkle-resistant properties by reacting a crosslinking agent with hydroxyl groups on adjacent molecular chains within the fiber, forming covalent bridges.

[0004] Commonly used chemical cross-linking agents for cotton fabrics can be divided into two categories: formaldehyde finishing agents and formaldehyde-free finishing agents. Formaldehyde finishing agents are mainly N-methylol resin finishing agents. This type of finishing agent has high reactivity and excellent cross-linking effect, but the ether bond formed is easily hydrolyzed and broken to release free formaldehyde, which is harmful to human health. Formaldehyde-free finishing agents mainly include dialdehydes, polyurethanes, silicones, polycarboxylic acids, etc. Among the many polycarboxylic acid finishing agents, butanetetracarboxylic acid BTCA has a better anti-wrinkle finishing effect, but it has the disadvantages of high cost, yellowing of fabrics due to high finishing temperature, and large damage to fabrics resulting in large strength loss, which hinders its industrial application. Tetracarboxylic acid ethanedithiol disuccinate ether is a tetracarboxylic acid that can be obtained by heating a dihydric thiol with maleic acid in an aqueous solution. It has the following structural formula (I):

[0005]

[0006] Formula (I)

[0007] Tetracarboxylic acid ethylenedithiol disuccinate ether and butanetetracarboxylic acid BTCA contain the same number of carboxyl groups. The presence of dithiols makes the molecular chain longer, increasing flexibility after cross-linking. This makes it a promising alternative to butanetetracarboxylic acid BTCA as a new anti-wrinkle agent. Its anti-wrinkle properties have also been demonstrated by a research institute at Donghua University, which has published a corresponding paper, "Synthesis of Tetracarboxylic Acid ethylenedithiol Disuccinate and Anti-wrinkle Finishing of Cotton Fabrics" [Printing and Dyeing (2018, No. 10)]. However, this study only provided preliminary validation of the anti-wrinkle properties of tetracarboxylic acid ethylenedithiol disuccinate ether. The optimized fabric finishing conditions were: ρ(MASESMA) 100 g / L, a molar ratio of the catalyst sodium hypophosphite to the carboxyl group in the finishing solution of 0.5 (65 g / L), two dips and two pads, drying at 80°C for 3 min, and baking at 160°C for 90 s. After one standard wash, the treated fabric achieved a wrinkle recovery angle of 251°, a tear strength retention of 53.9%, and a whiteness of 115.38. Using a two-bath process with the addition of 20g / L of softener, the wrinkle recovery angle reached 275° and a tear strength retention of 69.3%. While the wrinkle recovery angle achieved both initially and after one standard wash was good, the tear strength retention was still lower than that achieved with current anti-wrinkle treatments, requiring further improvement. Summary of the Invention

[0008] The purpose of the present invention is to provide a skin-friendly and anti-wrinkle fabric and a preparation method thereof in response to the above-mentioned problems. The present invention uses tetracarboxylic acid ethylenedithiol disuccinate ether as an anti-wrinkle agent and optimizes and improves the finishing liquid formula to significantly improve the tensile breaking strength of cotton fabrics. This significantly improves the strength reduction problem of current anti-wrinkle finished fabrics and has broad application prospects and market prospects.

[0009] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0010] The invention discloses an anti-wrinkle finishing liquid. The components and their mass concentrations in the anti-wrinkle finishing liquid are as follows: 50-75 g / L of tetracarboxylic acid ethylenedithiol disuccinate ether, 8-12 g / L of trimethylolpropane, 30-70 g / L of catalyst, 0.6-2 g / L of sodium N,N'-bispalmitoylethylenediamine diacetate, 0.4-0.8 g / L of hexadecyltrimethylammonium bromide, 2-4 g / L of cerium sulfate, and water as the solvent.

[0011] In the present invention, preferably, the components and mass concentrations of the anti-wrinkle finishing liquid are: 60 g / L tetracarboxylic acid ethylenedithiol disuccinate ether, 10 g / L trimethylolpropane, 60 g / L catalyst, 1.2 g / L sodium N,N'-bispalmitoylethylenediamine diacetate, 0.5 g / L hexadecyltrimethylammonium bromide, 3 g / L cerium sulfate, and the solvent is water.

[0012] In the present invention, preferably, the catalyst is one or more of sodium hypophosphite, disodium hydrogen phosphate, and sodium dihydrogen phosphate.

[0013] In the present invention, preferably, the anti-wrinkle finishing liquid is prepared by fully dissolving tetracarboxylic acid ethylenedithiol disuccinate ether in hot water at 45-80°C, then adding trimethylolpropane, a catalyst, sodium N,N'-bispalmitoylethylenediamine diacetate, hexadecyltrimethylammonium bromide and cerium sulfate and stirring uniformly.

[0014] The present invention also provides a preparation method of skin-friendly and wrinkle-resistant fabrics, comprising the following steps: immersing cotton fabric in an anti-wrinkle finishing liquid for anti-wrinkle padding, pre-baking and baking; the anti-wrinkle finishing liquid comprises the following components and their mass concentrations: 50-75 g / L of tetracarboxylic acid ethylenedithiol disuccinate ether, 8-12 g / L of trimethylolpropane, 30-70 g / L of catalyst, 0.6-2 g / L of sodium N,N'-bispalmitoylethylenediamine diacetate, 0.4-0.8 g / L of hexadecyltrimethylammonium bromide, 2-4 g / L of cerium sulfate, and the solvent is water.

[0015] In the present invention, preferably, the anti-wrinkle padding is two-dipping and two-padding, and the rolling rate is 80-90%.

[0016] In the present invention, preferably, the pre-baking temperature is 80-100° C., and the pre-baking time is 3-5 minutes; the baking temperature is 155-165° C., and the baking time is 1-3 minutes.

[0017] In the present invention, preferably, the cotton fabric is pure cotton fabric or a blended / interwoven fabric with a cotton content of more than 80 wt%.

[0018] The present invention also protects the skin-friendly and wrinkle-resistant fabric prepared by the preparation method.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0020] 1. The microstructure of cotton fiber is formed by the aggregation of dozens of cellulose macromolecules to form microfibrils with a transverse size of about 4 to 10 nm, which are then aggregated into fibrils with a transverse size of 10 to 25 nm, and the arrangement of fibrils forms cotton fibers. The present invention uses tetracarboxylic acid ethylenedithiol disuccinate as the main component of the anti-wrinkle liquid. The compounded surfactants N,N'-bispalmitoylethylenediamine sodium diacetate and hexadecyltrimethylammonium bromide can increase the diffusion of tetracarboxylic acid ethylenedithiol disuccinate so that it can better adhere to and combine with cotton fabrics, which is beneficial for its penetration into the non-crystalline area of ​​the microfibrils, increasing the effective contact and reaction between tetracarboxylic acid ethylenedithiol disuccinate and the non-crystalline area, and can achieve an increase in the wrinkle recovery angle with a smaller amount of tetracarboxylic acid ethylenedithiol disuccinate; and a smaller amount of The use of tetracarboxylic acid ethylenedithiol disuccinate ether reduces its reaction points with the surface of microfibrils, thereby reducing the damage of the esterification reaction to the tear strength of cotton fabrics; the addition of trimethylolpropane can change the cross-linking spatial structure state of tetracarboxylic acid ethylenedithiol disuccinate ether and the hydroxyl groups in cotton fibers, which can improve the tear strength of cotton fabrics. By controlling the amount of catalyst cerium sulfate, the reaction degree of trimethylolpropane can be controlled, and some of the alcoholic hydroxyl groups of trimethylolpropane can be retained, so that the hydrophilicity and skin-friendliness of the cotton fabric will not be lost too much due to the large-scale reaction of hydroxyl groups.

[0021] 2. Compared with butanetetracarboxylic acid BTCA, which is also a tetracarboxylic acid, the tetracarboxylic acid ethanedithiol disuccinate ether of the present invention is cheaper and more readily available, and has broad application and market prospects. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In the present invention, the cotton content of the cotton fabric is above 80wt%, and the remaining fibers can be selected from polyester, spandex, nylon, and other synthetic or natural fibers as needed, all of which can achieve the technical effects of the present invention. In the following examples, for the convenience of comparison, the cotton fabric formed by weaving a pure cotton fabric containing 100wt% cotton is used for finishing.

[0024] In addition, tetracarboxylic acid ethanedithiol disuccinic acid ether was synthesized according to the literature “Synthesis of tetracarboxylic acid ethanedithiol disuccinic acid ether and anti-wrinkle finishing of cotton fabrics”.

[0025] Example 1

[0026] The anti-wrinkle finishing liquid contains the following components and their mass concentrations: 50 g / L tetracarboxylic acid ethylenedithiol disuccinate, 8 g / L trimethylolpropane, 30 g / L disodium hydrogen phosphate, 0.6 g / L sodium N,N'-bispalmitoyl ethylenediamine diacetate, 0.4 g / L hexadecyltrimethylammonium bromide, and 2 g / L cerium sulfate. The solvent is water. After the tetracarboxylic acid ethylenedithiol disuccinate is fully dissolved in 45°C hot water, trimethylolpropane, disodium hydrogen phosphate, sodium N,N'-bispalmitoyl ethylenediamine diacetate, hexadecyltrimethylammonium bromide, and cerium sulfate are added and stirred until uniformly distributed, the anti-wrinkle finishing liquid is obtained.

[0027] The cotton fabric is immersed in the anti-wrinkle finishing liquid and subjected to two dipping and two padding, with a padding rate of 80%, and then pre-baked and baked; the pre-baking temperature is 80°C and the pre-baking time is 5 minutes; the baking temperature is 155°C and the baking time is 3 minutes, and then standard washing and drying are performed.

[0028] Example 2

[0029] The anti-wrinkle finishing liquid contains the following components and their mass concentrations: 60 g / L tetracarboxylic acid ethylenedithiol disuccinate, 10 g / L trimethylolpropane, 60 g / L sodium hypophosphite, 1.2 g / L sodium N,N'-bispalmitoyl ethylenediamine diacetate, 0.5 g / L hexadecyltrimethylammonium bromide, and 3 g / L cerium sulfate. The solvent is water. After the tetracarboxylic acid ethylenedithiol disuccinate is fully dissolved in hot water at 75°C, trimethylolpropane, sodium hypophosphite, sodium N,N'-bispalmitoyl ethylenediamine diacetate, hexadecyltrimethylammonium bromide, and cerium sulfate are added and stirred until uniformly distributed, the anti-wrinkle finishing liquid is obtained.

[0030] The cotton fabric is immersed in the anti-wrinkle finishing liquid and subjected to two dipping and two padding, with the padding rate being 85%, and then pre-baking and baking; the pre-baking temperature is 90°C and the pre-baking time is 4 minutes; the baking temperature is 160°C and the baking time is 2 minutes, and then standard washing and drying are performed.

[0031] Example 3

[0032] The anti-wrinkle finishing liquid contains the following components and their mass concentrations: 75 g / L tetracarboxylic acid ethylenedithiol disuccinate, 12 g / L trimethylolpropane, 70 g / L sodium dihydrogen phosphate, 2 g / L sodium N,N'-bispalmitoyl ethylenediamine diacetate, 0.8 g / L hexadecyltrimethylammonium bromide, and 4 g / L cerium sulfate. The solvent is water. After the tetracarboxylic acid ethylenedithiol disuccinate is fully dissolved in hot water at 75°C, trimethylolpropane, sodium dihydrogen phosphate, sodium N,N'-bispalmitoyl ethylenediamine diacetate, hexadecyltrimethylammonium bromide, and cerium sulfate are added and stirred until uniformly distributed, the anti-wrinkle finishing liquid is obtained.

[0033] The cotton fabric is immersed in the anti-wrinkle finishing liquid for double dipping and double padding, with a padding rate of 90%, and then pre-baked and baked; the pre-baking temperature is 100°C, the pre-baking time is 3 minutes; the baking temperature is 165°C, the baking time is 1 minute, and it is washed and dried in a standard manner.

[0034] Comparative Example 1

[0035] The anti-wrinkle finishing liquid contains the following components and their mass concentrations: 60 g / L tetracarboxylic acid ethylenedithiol disuccinate, 60 g / L sodium hypophosphite, 1.2 g / L sodium N,N'-bispalmitoyl ethylenediamine diacetate, 0.5 g / L hexadecyltrimethylammonium bromide, and 3 g / L cerium sulfate. The solvent is water. After the tetracarboxylic acid ethylenedithiol disuccinate is fully dissolved in 75°C hot water, the sodium hypophosphite, sodium N,N'-bispalmitoyl ethylenediamine diacetate, hexadecyltrimethylammonium bromide, and cerium sulfate are added and stirred until uniformly mixed to obtain the anti-wrinkle finishing liquid.

[0036] The cotton fabric is immersed in the anti-wrinkle finishing liquid and subjected to two dipping and two padding, with the padding rate being 85%, and then pre-baking and baking; the pre-baking temperature is 90°C and the pre-baking time is 4 minutes; the baking temperature is 160°C and the baking time is 2 minutes, and then standard washing and drying are performed.

[0037] Comparative Example 2

[0038] The anti-wrinkle finishing liquid contains the following components and their mass concentrations: 60 g / L tetracarboxylic acid ethylenedithiol disuccinate, 10 g / L trimethylolpropane, 60 g / L sodium hypophosphite, 1.2 g / L sodium sulfate, 0.5 g / L hexadecyltrimethylammonium bromide, and 3 g / L cerium sulfate. The solvent is water. After the tetracarboxylic acid ethylenedithiol disuccinate is fully dissolved in 75°C hot water, trimethylolpropane, sodium hypophosphite, sodium sulfate, hexadecyltrimethylammonium bromide, and cerium sulfate are added and stirred until uniformly distributed, the anti-wrinkle finishing liquid is obtained.

[0039] The cotton fabric is immersed in the anti-wrinkle finishing liquid and subjected to two dipping and two padding, with the padding rate being 85%, and then pre-baking and baking; the pre-baking temperature is 90°C and the pre-baking time is 4 minutes; the baking temperature is 160°C and the baking time is 2 minutes, and then standard washing and drying are performed.

[0040] Comparative Example 3

[0041] The anti-wrinkle finishing liquid contains the following components and their mass concentrations: 60 g / L tetracarboxylic acid ethylenedithiol disuccinate, 10 g / L trimethylolpropane, 60 g / L sodium hypophosphite, 1.2 g / L sodium N,N'-bispalmitoylethylenediamine diacetate, and 3 g / L cerium sulfate. The solvent is water. The tetracarboxylic acid ethylenedithiol disuccinate is fully dissolved in hot water at 75°C, and then trimethylolpropane, sodium hypophosphite, sodium N,N'-bispalmitoylethylenediamine diacetate, and cerium sulfate are added and stirred until uniformly distributed to obtain the anti-wrinkle finishing liquid.

[0042] The cotton fabric is immersed in the anti-wrinkle finishing liquid and subjected to two dipping and two padding, with the padding rate being 85%, and then pre-baking and baking; the pre-baking temperature is 90°C and the pre-baking time is 4 minutes; the baking temperature is 160°C and the baking time is 2 minutes, and then standard washing and drying are performed.

[0043] Comparative Example 4

[0044] The anti-wrinkle finishing liquid contains the following components and their mass concentrations: 60 g / L tetracarboxylic acid ethylenedithiol disuccinate, 10 g / L trimethylolpropane, 60 g / L sodium hypophosphite, 1.2 g / L sodium N,N'-bispalmitoyl ethylenediamine diacetate, 0.5 g / L octyl polyoxyethylene decyl ammonium chloride, and 3 g / L cerium sulfate. The solvent is water. After the tetracarboxylic acid ethylenedithiol disuccinate is fully dissolved in 75°C hot water, trimethylolpropane, sodium hypophosphite, sodium N,N'-bispalmitoyl ethylenediamine diacetate, octyl polyoxyethylene decyl ammonium chloride, and cerium sulfate are added and stirred until uniformly distributed, thereby obtaining the anti-wrinkle finishing liquid.

[0045] The cotton fabric is immersed in the anti-wrinkle finishing liquid and subjected to two dipping and two padding, with the padding rate being 85%, and then pre-baking and baking; the pre-baking temperature is 90°C and the pre-baking time is 4 minutes; the baking temperature is 160°C and the baking time is 2 minutes, and then standard washing and drying are performed.

[0046] Comparative Example 5

[0047] The anti-wrinkle finishing liquid contains the following components and their mass concentrations: 60 g / L tetracarboxylic acid ethylenedithiol disuccinate, 10 g / L trimethylolpropane, 60 g / L sodium hypophosphite, 1.2 g / L sodium N,N'-bispalmitoyl ethylenediamine diacetate, and 0.5 g / L hexadecyltrimethylammonium bromide. The solvent is water. After the tetracarboxylic acid ethylenedithiol disuccinate is fully dissolved in 75°C hot water, trimethylolpropane, sodium hypophosphite, sodium N,N'-bispalmitoyl ethylenediamine diacetate, and hexadecyltrimethylammonium bromide are added and stirred until uniformly mixed to obtain the anti-wrinkle finishing liquid.

[0048] The cotton fabric was immersed in the anti-wrinkle finishing liquid and subjected to two dipping and two padding, with a padding rate of 85%, and then pre-baked and baked; the pre-baking temperature was 90°C and the pre-baking time was 4 minutes; the baking temperature was 160°C and the baking time was 2 minutes, and then standard washing and drying were performed.

[0049] Performance testing:

[0050] The cotton fabrics treated in Examples 1-3 and Comparative Examples 1-5 were cut and their properties were tested according to the following standards:

[0051] 1. Wrinkle recovery angle

[0052] The test was conducted according to AATCC 66-2008 “Fabric Wrinkle Recovery: Recovery Angle Method”.

[0053] 2. Tearing strength

[0054] The test was carried out according to ASTM D1424-1996 “Determination of the tear strength of fabrics by the impact pendulum method”, and then the tear strength retention rate was calculated.

[0055] The performance test results of the cotton fabrics obtained in Examples 1-3 and Comparative Examples 1-5 are shown in the following table.

[0056] Table 1 Initial performance test results.

[0057]

[0058] As can be seen from Table 1 above, the skin-friendly, wrinkle-resistant fabrics prepared in Examples 1-3 exhibit excellent wrinkle resistance and high tear strength retention. In Comparative Example 2, sodium sulfate replaced sodium N,N'-bispalmitoylethylenediamine diacetate in the finishing solution, and cetyltrimethylammonium bromide was absent in the finishing solution of Comparative Example 3. The wrinkle recovery angle and tear strength retention of the cotton fabric decreased significantly, indicating that the combination of the two surfactants significantly impacts performance. In Comparative Example 4, octylpolyoxyethylenedecylammonium chloride replaced cetyltrimethylammonium bromide in the finishing solution. The wrinkle recovery angle and tear strength retention of the cotton fabric decreased somewhat, but were still lower than those of Examples 1-3, indicating that not all surfactants achieve the same effect; different surfactants produce different finishing effects. The finishing solution used in Comparative Example 1 lacked trimethylolpropane, and Comparative Example 5 lacked cerium sulfate, indicating that trimethylolpropane also has a certain impact on the wrinkle recovery angle and tear strength retention of cotton fabric. The above experiments prove that the present invention can significantly improve the wrinkle recovery angle and strength retention rate of cotton fabrics by compounding the finishing liquid mainly composed of tetracarboxylic acid tetracarboxylic acid ethanedithiol disuccinate ether.

[0059] The above description is a detailed description of the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. Any equivalent changes or modifications completed under the technical spirit suggested by the present invention should fall within the patent scope covered by the present invention.

Claims

1. An anti-wrinkle finishing liquid, characterized in that: The components and their mass concentrations in the anti-wrinkle finishing liquid are: 50-75 g / L tetracarboxylic acid ethylenedithiol disuccinate ether, 8-12 g / L trimethylolpropane, 30-70 g / L catalyst, 0.6-2 g / L sodium N,N'-bispalmitoylethylenediamine diacetate, 0.4-0.8 g / L hexadecyltrimethylammonium bromide, 2-4 g / L cerium sulfate, and the solvent is water.

2. The anti-wrinkle finishing liquid according to claim 1, characterized in that The components and mass concentrations of the anti-wrinkle finishing liquid are as follows: 60 g / L of tetracarboxylic acid ethylenedithiol disuccinate ether, 10 g / L of trimethylolpropane, 60 g / L of catalyst, 1.2 g / L of sodium N,N'-bispalmitoylethylenediamine diacetate, 0.5 g / L of hexadecyltrimethylammonium bromide, and 3 g / L of cerium sulfate. The solvent is water.

3. The anti-wrinkle finishing liquid according to claim 1, characterized in that The catalyst is one or more of sodium hypophosphite, disodium hydrogen phosphate, and sodium dihydrogen phosphate.

4. The anti-wrinkle finishing liquid according to claim 1, characterized in that The anti-wrinkle finishing liquid is prepared by fully dissolving tetracarboxylic acid ethylenedithiol disuccinate ether in hot water at 45-80°C, then adding trimethylolpropane, a catalyst, sodium N,N'-bispalmitoylethylenediamine diacetate, hexadecyltrimethylammonium bromide and cerium sulfate and stirring evenly.

5. A method for preparing skin-friendly and wrinkle-resistant fabrics, characterized in that: The following steps are involved: The cotton fabric is first immersed in the anti-wrinkle finishing liquid according to any one of claims 1 to 4 for anti-wrinkle padding, and then pre-baked and baked.

6. The preparation method according to claim 5, characterized in that: The anti-wrinkle padding is a double-dipping and double-rolling process, with a rolling rate of 80-90%.

7. The preparation method according to claim 5, characterized in that: The pre-baking temperature is 80-100° C., and the pre-baking time is 3-5 minutes; the baking temperature is 155-165° C., and the baking time is 1-3 minutes.

8. The preparation method according to claim 5, characterized in that: The cotton fabric is pure cotton fabric or blended / interwoven fabric with a cotton content of more than 80 wt%.

9. The skin-friendly and wrinkle-resistant fabric prepared by the preparation method according to any one of claims 5 to 8.

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