A three-dimensional wrinkled flower texture composite fabric and its preparation method

Abstract

The present invention belongs to the technical field of fabrics, and specifically discloses a three-dimensional wrinkled texture composite fabric and a preparation method thereof. The three-dimensional wrinkled texture composite fabric comprises a lining cloth, a core layer and a surface cloth which are sequentially arranged from the inside to the outside. The core layer comprises a three-dimensional texture pattern formed by 3D printing with a modified polyamic acid sol as a raw material and a coating layer coated on the three-dimensional texture pattern by electrospinning with a magnetic fiber spinning solution as a raw material. The composite fabric provided by the present invention has obvious improvements in peel strength and wash fastness, and has a long texture life, providing a theoretical basis for further improving the comprehensive performance of the three-dimensional wrinkled texture composite fabric.

Description

Technical Field

[0001] The present invention belongs to the technical field of fabrics, and particularly relates to a three-dimensional wrinkled texture composite fabric and a preparation method thereof. Background Art

[0002] The texture of fabrics is usually recreated by traditional manual printing, tie-dyeing, batik, painting and modern computer printing on the surface. Most of this texture is visual. Only the texture with three-dimensional structure is a comprehensive texture of vision and touch. Among them, the wrinkled pattern changes the two-dimensional space of the fabric texture surface into a three-dimensional space, with a three-dimensional form, making the original plain and smooth fabric transformed into a new style with rich layers, interesting changes and full of vitality.

[0003] However, at present, the three-dimensional wrinkled texture is mainly reflected in the sewing process of clothing or the film laminating and stamping process of fabrics. The former has the problem of long processing time, while the latter has problems such as short texture life and poor wash resistance. Summary of the Invention

[0004] In order to solve the above problems, the primary object of the present invention is to provide a three-dimensional wrinkled texture composite fabric and a preparation method thereof.

[0005] The specific technical solution of the present invention includes:

[0006] The present invention provides a three-dimensional wrinkled texture composite fabric, which includes a lining cloth, a core layer and a surface cloth arranged in sequence from inside to outside. The core layer includes a three-dimensional texture pattern formed by 3D printing with a modified polyamic acid sol as a raw material and a coating layer coated on the three-dimensional texture pattern by electrospinning with a magnetic fiber spinning solution as a raw material.

[0007] As a further optimized scheme of the present invention, the preparation method of the modified polyamic acid sol is to first disperse water-soluble polyamic acid and an aqueous solution of water-soluble peroxotitanic acid in deionized water, add triethylamine, and stir until the polyamic acid is completely dissolved to obtain the modified polyamic acid sol.

[0008] As a further optimized scheme of the present invention, the dosage of the aqueous solution of water-soluble peroxotitanic acid is 2-6% of the total volume of the modified polyamic acid sol.

[0009] As a further optimized scheme of the present invention, the magnetic fiber spinning solution, by weight percentage, includes 50-70% of N,N-dimethylformamide, 10-20% of polyurethane, 5-10% of magnetic powder, 1-10% of antibacterial powder, 1-5% of coupling agent and 1-5% of dispersant.

[0010] As a further optimization scheme of the present invention, the bacteriostatic powder includes 70-80% of soy lecithin and 20-30% of astragalus alkaloid microparticles by mass percentage.

[0011] The present invention also provides a preparation method of the three-dimensional wrinkled texture composite fabric as described in any one of the above, including the following steps:

[0012] (1) Load the prepared modified polyamic acid sol into a 3D printer, and according to the three-dimensional texture pattern preset in the 3D printer, uniformly spray the modified polyamic acid sol at high pressure on the surface of the lining cloth through a 3D printing nozzle to form a three-dimensional texture pattern;

[0013] (2) Melt the prepared magnetic fiber spinning solution, and spray it through a spinneret hole onto the surface of the three-dimensional texture pattern obtained in step (1) to form a coating layer, thus completing the setting of the core layer on the lining cloth. Subsequently, cover the surface cloth on the coating layer and perform a preliminary heat setting operation;

[0014] (3) After the preliminary heat setting operation, irradiate with an ultraviolet light source with a wavelength of 405 nm above the surface cloth, and at the same time set a strong magnetic field of 6000-10000 Gauss on the side of the lining cloth away from the core layer for magnetization treatment for 30-60 minutes to obtain a composite fabric;

[0015] (4) Place the composite fabric in a kneading machine for kneading, and repeat the operations of soaking in clear water, rinsing, drying and kneading twice to obtain the three-dimensional wrinkled texture composite fabric.

[0016] As a further optimization scheme of the present invention, in the step (2), the printing parameters of the 3D printer are that the inner diameter of the nozzle is 150-200 μm, the air pressure is 0.1-0.3 MPa, the printing speed is 5-8 mm / s, the nozzle height is 250-300 μm, and the light intensity is 100-200 mw / cm 2 .

[0017] As a further optimization scheme of the present invention, in the step (2), the specific process parameters of the spinneret hole spraying are that the voltage magnitude is 15-20 kV, the receiving distance is 15-20 cm, and the spraying speed is 5-10 ml / h.

[0018] As a further optimization scheme of the present invention, in the step (2), the specific process parameters of the preliminary heat setting operation are a temperature of 100-110 °C, a pressure of 1-5 MPa, and a treatment time of 15-30 minutes.

[0019] In summary, the beneficial effects of the present invention are:

[0020] The present invention uses an aqueous solution of water-soluble peroxotitanic acid to modify water-soluble polyamic acid to obtain a modified polyamic acid sol. Using the modified polyamic acid sol as a raw material, a three-dimensional texture pattern is formed by 3D printing. In addition, a magnetic fiber spinning solution is used as a raw material, and an electrostatic spinning is used to coat a film layer on the three-dimensional texture pattern, thereby obtaining a composite fabric obtained by laminating a core layer, a lining fabric, and a face fabric. The composite fabric has obvious improvements in peel strength and wash fastness, and has a long texture life, providing a theoretical basis for further improving the comprehensive performance of the three-dimensional wrinkled texture composite fabric. Detailed Embodiments

[0021] The following further describes the present application in detail. It is necessary to point out here that the following specific embodiments are only used to further illustrate the present application and cannot be construed as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Example 1

[0023] This example provides a three-dimensional wrinkled texture composite fabric, including a lining fabric, a core layer, and a face fabric arranged in sequence from the inside to the outside;

[0024] The preparation method of the three-dimensional wrinkled texture composite fabric is as follows:

[0025] (1) Preparation of the modified polyamic acid sol: Dispersing water-soluble polyamic acid and an aqueous solution of water-soluble peroxotitanic acid in deionized water, adding triethylamine, and stirring until the polyamic acid is completely dissolved. The stirring time is 2 h to obtain the modified polyamic acid sol. The dosage of the aqueous solution of water-soluble peroxotitanic acid is 2% of the total volume of the modified polyamic acid sol;

[0026] (2) Loading the prepared modified polyamic acid sol into a 3D printer, and according to the three-dimensional texture pattern preset in the 3D printer, the modified polyamic acid sol is uniformly sprayed on the surface of the lining fabric at high pressure through a 3D printing nozzle to form a three-dimensional texture pattern. The printing parameters of the 3D printer are that the inner diameter of the nozzle is 150 μm, the air pressure is 0.1 MPa, the printing speed is 5 mm / s, the nozzle height is 250 μm, and the light intensity is 100 mw / cm 2 ;

[0027] (3) Preparation of magnetic fiber spinning solution: First, 70% by mass of soybean lecithin and 30% by mass of astragalus alkaloid particles are mixed evenly to obtain an antibacterial powder. Then, 60% by mass of N, N - dimethylformamide, 20% by mass of polyurethane, 5% by mass of magnetic powder, 5% by mass of antibacterial powder, 2% by mass of silane coupling agent, and 3% by mass of dispersant NNO are weighed. The polyurethane, magnetic powder, antibacterial powder, silane coupling agent, and dispersant NNO are dispersed into N, N - dimethylformamide, and stirred for 2 h to obtain the magnetic fiber spinning solution;

[0028] (4) The prepared magnetic fiber spinning solution is melted and sprayed through a spinneret onto the surface of the three - dimensional texture pattern to form a coating layer, thus completing the setting of the core layer on the lining fabric. The specific process parameters for spraying through the spinneret are as follows: the voltage is 15 kV, the receiving distance is 15 cm, and the spraying speed is 5 ml / h. Subsequently, the surface fabric is covered on the coating layer, and a preliminary heat - setting operation is carried out. The specific process parameters for the preliminary heat - setting operation are a temperature of 110 °C, a pressure of 2 MPa, and a treatment time of 15 min;

[0029] (5) After the preliminary heat - setting operation, ultraviolet light with a wavelength of 405 nm is irradiated above the surface fabric, and at the same time, a strong magnetic field of 10000 Gauss is set on the side of the lining fabric far from the core layer for magnetization treatment for 30 min, then the three - dimensional wrinkled texture composite fabric can be obtained.

[0030] Example 2

[0031] This example provides a three - dimensional wrinkled texture composite fabric, including a lining fabric, a core layer, and a surface fabric arranged in sequence from the inside to the outside;

[0032] The preparation method of the three - dimensional wrinkled texture composite fabric is as follows:

[0033] (1) Except that the dosage of the water - soluble peroxotitanic acid aqueous solution is 4% of the total volume of the modified polyamic acid sol, the rest of step (1) is the same as in Example 1;

[0034] (2) Except that the printing parameters of the 3D printer are as follows: the inner diameter of the nozzle is 200 μm, the air pressure is 0.3 MPa, the printing speed is 8 mm / s, the height of the nozzle is 300 μm, and the light intensity is 200 mw / cm 2 outside, the rest of step (2) is the same as in Example 1;

[0035] (3) Except that 80% by mass percentage of soy lecithin and 20% by mass percentage of astragalus alkaloid microparticles are mixed evenly to obtain an antibacterial powder; and then 70% by mass percentage of N, N-dimethylformamide, 10% by mass percentage of polyurethane, 10% by mass percentage of magnetic powder, 5% by mass percentage of the antibacterial powder, 2% by mass percentage of silane coupling agent and 3% by mass percentage of dispersant NNO are weighed, step (3) is the same as Example 1;

[0036] (4) Except that the specific process parameters of the spinneret spraying are that the voltage is 20 kV, the receiving distance is 20 cm, the spraying speed is 10 ml / h, and then the surface cloth is covered on the film layer and a preliminary heat setting operation is carried out. The specific process parameters of the preliminary heat setting operation are a temperature of 100 °C, a pressure of 5 MPa, and a treatment time of 30 min, the rest of step (4) is the same as Example 1;

[0037] (5) After the preliminary heat setting operation, irradiate with a 405 nm ultraviolet light source above the surface cloth, and at the same time set a strong magnetic field of 6000 Gauss on the side of the lining cloth away from the core layer for magnetization treatment for 45 min, then the three-dimensional wrinkled texture composite fabric can be obtained.

[0038] Example 3

[0039] This example provides a three-dimensional wrinkled texture composite fabric, including a lining cloth, a core layer and a surface cloth arranged in sequence from the inside to the outside;

[0040] The preparation method of the three-dimensional wrinkled texture composite fabric is as follows.

[0041] (1) Except that the dosage of the water-soluble peroxotitanic acid aqueous solution is 6% of the total volume of the modified polyamic acid sol, the rest of step (1) is the same as Example 1;

[0042] (2) Except that the printing parameters of the 3D printer are that the inner diameter of the nozzle is 17 μm, the air pressure is 0.3 MPa, the printing speed is 8 mm / s, the nozzle height is 300 μm, and the light intensity is 200 mw / cm 2 outside, the rest of step (2) is the same as Example 1;

[0043] (3) Except that 75% by mass percentage of soy lecithin and 25% by mass percentage of astragalus alkaloid microparticles are mixed evenly to obtain an antibacterial powder; and then 50% by mass percentage of N, N-dimethylformamide, 15% by mass percentage of polyurethane, 10% by mass percentage of magnetic powder, 10% by mass percentage of the antibacterial powder, 3% by mass percentage of silane coupling agent and 2% by mass percentage of dispersant NNO are weighed, the rest of step (3) is the same as Example 1;

[0044] (6) Except that the specific process parameters for spraying through the spinneret holes are a voltage of 17.5 kV, a receiving distance of 17.5 cm, and a spraying speed of 7.5 ml / h. Subsequently, the surface fabric is covered on the film layer, and a preliminary heat setting operation is carried out. The specific process parameters for the preliminary heat setting operation are a temperature of 105 °C, a pressure of 3 MPa, and a treatment time of 23 min. The rest of step (4) is the same as in Example 1;

[0045] (7) After the preliminary heat setting operation, irradiate with ultraviolet light source with a wavelength of 405 nm above the surface fabric, and at the same time, set a strong magnetic field of 8000 Gauss on the side of the inner fabric away from the core layer for magnetization treatment for 60 min, then the three-dimensional wrinkled texture composite fabric can be obtained.

[0046] Comparative Example 1

[0047] This comparative example provides a three-dimensional wrinkled texture composite fabric, including an inner fabric, a core layer, and a surface fabric arranged in sequence from the inside to the outside;

[0048] For the preparation method of the three-dimensional wrinkled texture composite fabric, except for step (1), disperse water-soluble polyamic acid in deionized water, add triethylamine, and stir until the polyamic acid is completely dissolved. The stirring time is 2 h to obtain a polyamic acid sol;

[0049] In step (2), load the prepared polyamic acid sol into a 3D printer. According to the three-dimensional texture pattern preset in the 3D printer, spray the modified polyamic acid sol evenly at high pressure on the surface of the inner fabric through the 3D printing nozzle to form a three-dimensional texture pattern. The rest of the steps are the same as in Example 2.

[0050] Comparative Example 2

[0051] This comparative example provides a three-dimensional wrinkled texture composite fabric, including an inner fabric, a core layer, and a surface fabric arranged in sequence from the inside to the outside;

[0052] For the preparation method of the three-dimensional wrinkled texture composite fabric, except for step (1), disperse water-soluble polyamic acid and titanium dioxide in deionized water, add triethylamine, and stir until the polyamic acid is completely dissolved. The stirring time is 2 h to obtain a modified polyamic acid sol. The dosage of titanium dioxide is the same as the dosage of the water-soluble peroxotitanic acid aqueous solution used in Example 2; the rest of the steps are the same as in Example 2.

[0053] Comparative Example 3

[0054] This comparative example provides a three-dimensional wrinkled texture composite fabric, including an inner fabric, a core layer, and a surface fabric arranged in sequence from the inside to the outside;

[0055] The preparation method of the three-dimensional wrinkled flower texture composite fabric is the same as that of Example 2 in the remaining steps, except that after the preliminary heat setting operation in step (5), the fabric is irradiated with ultraviolet light with a wavelength of 405 nm from above the surface fabric for 45 minutes to obtain the three-dimensional wrinkled flower texture composite fabric.

[0056] Comparative Example 4

[0057] This comparative example provides a preparation method of a three-dimensional wrinkled flower texture composite fabric, including a lining cloth, a core layer and a surface cloth arranged in sequence from the inside to the outside;

[0058] For the preparation method of the three-dimensional wrinkled flower texture composite fabric, except for the preparation of the polyester fiber spinning solution in step (3), first mix 70% by mass percentage of soybean lecithin and 30% by mass percentage of astragalus alkaloid particles to obtain an antibacterial powder, and then weigh 60% by mass percentage of N, N-dimethylformamide, 25% by mass percentage of polyurethane, 5% by mass percentage of antibacterial powder, 2% by mass percentage of silane coupling agent and 3% by mass percentage of dispersant NNO. Disperse polyurethane, antibacterial powder, silane coupling agent and dispersant NNO into N, N-dimethylformamide and stir for 2 h to obtain the polyester fiber spinning solution;

[0059] In step (5), after the preliminary heat setting operation, irradiate the surface fabric with ultraviolet light with a wavelength of 405 nm from above for 45 minutes to obtain the three-dimensional wrinkled flower texture composite fabric, and the rest is the same as Example 2.

[0060] Comparative Example 5

[0061] This comparative example provides a three-dimensional wrinkled flower texture composite fabric, including a lining cloth, a core layer and a surface cloth arranged in sequence from the inside to the outside;

[0062] For the preparation method of the three-dimensional wrinkled flower texture composite fabric, except for the preparation of the polyester fiber spinning solution in step (3), first mix 70% by mass percentage of soybean lecithin and 30% by mass percentage of astragalus alkaloid particles to obtain an antibacterial powder, and then weigh 60% by mass percentage of N, N-dimethylformamide, 25% by mass percentage of polyurethane, 5% by mass percentage of antibacterial powder, 2% by mass percentage of silane coupling agent and 3% by mass percentage of dispersant NNO. Disperse polyurethane, antibacterial powder, silane coupling agent and dispersant NNO into N, N-dimethylformamide and stir for 2 h to obtain the polyester fiber spinning solution, and the rest is the same as Example 2.

[0063] Comparative Example 6

[0064] This comparative example provides a three-dimensional wrinkled flower texture composite fabric, including a lining cloth, a core layer and a surface cloth arranged in sequence from the inside to the outside;

[0065] Preparation method of three-dimensional wrinkled flower texture composite fabric. Except for the preparation of magnetic fiber spinning solution in step (3), 80% by mass percentage of glycerol and 20% by mass percentage of astragalus alkaloid particles are mixed evenly to obtain an antibacterial powder. Then, in addition to weighing 70% by mass percentage of N, N-dimethylformamide, 10% by mass percentage of polyurethane, 10% by mass percentage of magnetic powder, 5% by mass percentage of antibacterial powder, 2% by mass percentage of silane coupling agent and 3% by mass percentage of dispersant NNO, the remaining steps are the same as those in Example 2.

[0066] Comparative Example 7

[0067] This comparative example provides a three-dimensional wrinkled flower texture composite fabric, including a lining cloth, a core layer and a surface cloth arranged in sequence from the inside to the outside;

[0068] Preparation method of three-dimensional wrinkled flower texture composite fabric. Except for the preparation of magnetic fiber spinning solution in step (3), 80% by mass percentage of glycerol and 20% by mass percentage of astragalus alkaloid particles are mixed evenly to obtain an antibacterial powder. Then, weigh 70% by mass percentage of N, N-dimethylformamide, 10% by mass percentage of polyurethane, 10% by mass percentage of magnetic powder, 5% by mass percentage of antibacterial powder, 2% by mass percentage of silane coupling agent and 3% by mass percentage of dispersant NNO;

[0069] After the preliminary heat setting operation in step (5), irradiate with an ultraviolet light source with a wavelength of 405 nm above the surface cloth for 45 min, and then the three-dimensional wrinkled flower texture composite fabric can be obtained. The rest is the same as that in Example 2.

[0070] Verification test

[0071] The fabric samples prepared in Examples 1-3 and Comparative Examples 1-7 are subjected to peel strength test, wash fastness test and antibacterial performance test. In addition, a commercially available three-dimensional wrinkled flower texture composite fabric is used to conduct a wash fastness test together with the fabric samples of the present invention, and then the three-dimensional wrinkled flower texture states of the surface of the control group fabric and the fabric samples of the present invention are observed respectively.

[0072] Peel strength test: Refer to the standard FZ / T01085—2010 "Test Method for Peel Strength of Hot Melt Adhesive Lining Cloth", and conduct a peel strength test. In this test, an electronic single fiber strength tester is used to test the peel strength between the inner knitted fabric and the outer knitted fabric. Among them, the sample size is 15 mm × 100 mm, the gauge length is 10 mm, and the tensile speed is 100 mm / min. Each sample is tested 3 times according to the standard, and the average value is taken as the final data.

[0073] Washing fastness test: It was tested by a fully automatic shrinkage rate tester. The specimens were respectively placed in a horizontal drum washing machine to simulate the process of washing clothes in a washing machine, and the washing time was 40 min. At present, there is no clear classification standard for the washing fastness of coated fabrics. However, according to the literature and materials consulted, it is found that in the relevant standard FZ / T 72016-2012, it is stipulated that the appearance quality of knitted composite clothing fabrics after washing is not allowed to have surface blistering, degumming, cracking, and shrinkage and wrinkling. That is, in this invention, after the specimens were washed 50 times respectively, the peel strength test of the specimens was carried out. Each sample was tested 3 times, and the average value was taken as the final data.

[0074] Antibacterial performance test: The detection basis of the antibacterial test method is GB / T 20944.2-2007 "Evaluation of antibacterial properties of textiles - Part 2: Absorption method". The test strains are Staphylococcus aureus ATCC No.6538 (Gram-positive bacterium), Escherichia coli 8099 (Gram-negative bacterium), and Candida albicans ATCC No.10231 (Candida). According to the standard, the fabrics of the standard cloth, Examples 1-3, and Comparative Examples 1-7 were respectively cut into pieces of 18 mm×18 mm, and 0.4 g of each was weighed for the antibacterial test, and the antibacterial rate was calculated (antibacterial rate = (number of live bacteria at 0 h - number of live bacteria after culturing for 18 h) / number of live bacteria at 0 h).

[0075] The results are shown in Table 1.

[0076] Table 1. Statistical table of test results

[0077] ;

[0078] As can be seen from Table 1, by comparing the data results of Examples 1-3 and Comparative Examples 1-7, it can be known that in this application, a modified polyamic acid sol is prepared by modifying water-soluble polyamic acid with an aqueous solution of water-soluble peroxotitanic acid. Using the modified polyamic acid sol as the raw material, a three-dimensional texture pattern is formed by 3D printing. In addition, using a magnetic fiber spinning solution as the raw material, an electrostatic spinning coating layer is coated on the three-dimensional texture pattern. In this way, a composite fabric obtained by compounding the core layer with the lining cloth and the surface cloth has a significant improvement in peel strength and washing fastness;

[0079] In addition, because the magnetic fiber spinning solution contains antibacterial powder and the fabric is magnetized during the fabric preparation process, from the data comparison, magnetizing the composite fabric helps to improve the antibacterial performance of the composite fabric. And from the comparison between Comparative Examples 6-7 and Example 2, adding soybean lecithin to the antibacterial powder can promote the effect of the magnetizing treatment, and the two cooperate synergistically to further improve the antibacterial performance of the composite fabric.

[0080] Finally, after conducting a wash fastness test on a commercially available composite fabric with a three-dimensional crinkled texture (control group) and the fabric samples of Examples 1-3 of the present invention together and then observing, it was found that the three-dimensional crinkled texture state of the fabric samples of Examples 1-3 of the present invention was intact, while incomplete phenomena such as the fading and breaking of the crinkled texture pattern occurred in the control group. Thus, it can be seen that the three-dimensional crinkled texture composite fabric of the present invention has the characteristics of a long texture life and wash resistance. The present invention provides a theoretical basis for further improving the comprehensive performance of the three-dimensional crinkled texture composite fabric.

[0081] The above embodiments merely represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, several improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A three-dimensional wrinkled texture composite fabric, characterized in that: The invention comprises a lining, a core layer and a surface fabric arranged in sequence from the inside out, wherein the core layer comprises a three-dimensional texture pattern formed by 3D printing using a modified polyamic acid sol as a raw material, and a coating layer coated on the three-dimensional texture pattern by electrostatic spinning using a magnetic fiber spinning solution as a raw material, and the coating layer is subjected to magnetization treatment; Magnetic powder is added to the components of the magnetic fiber spinning solution used to prepare the coating layer, and the modified polyamic acid sol is a polyamic acid sol modified by a water-soluble peroxytitanic acid aqueous solution.

2. The three-dimensional wrinkled texture composite fabric according to claim 1, characterized in that: The modified polyamic acid sol is prepared by first dispersing water-soluble polyamic acid and a water-soluble peroxytitanic acid aqueous solution in deionized water, adding triethylamine, and stirring until the polyamic acid is completely dissolved to obtain the modified polyamic acid sol.

3. The three-dimensional wrinkled texture composite fabric according to claim 2, characterized in that: The amount of the water-soluble peroxytitanic acid aqueous solution is 2-6% of the total volume of the modified polyamic acid sol.

4. The three-dimensional wrinkled texture composite fabric according to claim 1, characterized in that: The magnetic fiber spinning solution comprises, by weight percentage, 50-70% N,N-dimethylformamide, 10-20% polyurethane, 5-10% magnetic powder, 10% antibacterial powder, 1-5% coupling agent and 1-5% dispersant.

5. The three-dimensional wrinkled texture composite fabric according to claim 4, characterized in that: The antibacterial powder comprises, by weight percentage, 70-80% of soybean lecithin and 20-30% of astragalus alkaloid microparticles.

6. A method for preparing a three-dimensional wrinkled texture composite fabric according to any one of claims 1 to 5, characterized in that: The following steps are involved: (1) The prepared modified polyamic acid sol is loaded into a 3D printer, and according to the three-dimensional texture pattern pre-set in the 3D printer, the modified polyamic acid sol is uniformly sprayed on the surface of the lining through the 3D printing nozzle at high pressure to form a three-dimensional texture pattern; (2) Melting the prepared magnetic fiber spinning solution and spraying it onto the surface of the three-dimensional texture pattern obtained in step (1) through the spinneret to form a coating layer, thereby completing the arrangement of the core layer on the lining fabric, and then covering the surface fabric on the coating layer for preliminary heat setting operation; (3) After the initial heat setting operation, an ultraviolet light source with a wavelength of 405 nm is used to irradiate the top of the surface fabric, and at the same time, a strong magnetic field of 6000-10000 Gauss is set on the side of the lining away from the core layer for magnetization treatment for 30-60 minutes, thereby obtaining the three-dimensional wrinkled texture composite fabric.

7. The method for preparing a three-dimensional wrinkled texture composite fabric according to claim 6, characterized in that: In step (1), the printing parameters of the 3D printer are: nozzle inner diameter of 150-200 μm, air pressure of 0.1-0.3 MPa, printing speed of 5-8 mm / s, nozzle height of 250-300 μm, and light intensity of 100-200 mw / cm 2 .

8. The method for preparing a three-dimensional wrinkled texture composite fabric according to claim 6, characterized in that: In the step (2), the specific process parameters of the spinneret injection are a voltage of 15-20 kV, a receiving distance of 15-20 cm, and a spraying speed of 5-10 ml / h.

9. The method for preparing a three-dimensional wrinkled texture composite fabric according to claim 6, characterized in that: In the step (2), the specific process parameters of the preliminary heat setting operation are a temperature of 100-110°C, a pressure of 1-5 MPa, and a processing time of 15-30 min.