Preparation method of light and thin microporous breathable wear-resistant composite fabric

Abstract

The invention relates to the technical field of fabric preparation, in particular to a preparation method of a light and thin microporous breathable wear-resistant composite fabric, comprising the following steps: S1, mixing chinlon chips with modified zinc acetate, and performing melt spinning, lapping and hot rolling reinforcement to obtain an outer fabric; s2, performing melt spinning, spinning and weaving on polyester chips to obtain an inner-layer fabric; s3, spraying a first finishing liquid to the surface of the outer-layer fabric to obtain a finished outer-layer fabric; s4, coating the inner-layer fabric with a polyurethane hot melt adhesive, and performing hot pressing to obtain a pressed fabric; s5, soaking the laminated fabric in the second finishing liquid for multiple times to obtain the wear-resistant composite fabric. The wear resistance of the outer-layer fabric is improved through the first finishing liquid, the softness of the wear-resistant composite fabric is improved through the second finishing liquid, and modified zinc acetate is eluted, so that a microporous structure appears on the outer-layer fabric, and the air permeability and wear resistance of the wear-resistant composite fabric are ensured.

Description

Technical Field

[0001] This invention relates to the field of fabric preparation technology, specifically to a method for preparing a lightweight, microporous, breathable, and wear-resistant composite fabric. Background Technology

[0002] Fabric is the material used to make clothing. There are many types of fabrics, and most fabrics used to make clothing are characterized by comfort, sweat absorption, and breathability. As people pay more and more attention to health and sports, the wear and tear on everyday clothing is gradually increasing; especially for consumers who love fitness and outdoor sports, their requirements for the abrasion resistance of clothing fabrics are getting higher and higher.

[0003] The existing methods to improve the abrasion resistance of fabrics mainly involve forming an abrasion-resistant coating on the fabric surface. However, in addition to abrasion resistance, outdoor clothing fabrics also need to have good breathability. Abrasion-resistant finishing can reduce the breathability of clothing fabrics, affecting their comfort. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a method for preparing a lightweight, microporous, breathable, and wear-resistant composite fabric.

[0005] The technical solution of this invention is: a method for preparing a lightweight, microporous, breathable, and wear-resistant composite fabric, comprising the following steps: S1. Nylon chips are mixed with modified zinc acetate and placed in a screw extruder. After melting at 250~260℃, they are melt-spun to obtain nylon fibers. The nylon fibers are laid on a spinning screen to form a fiber web, which is then hot-rolled to reinforce the web and obtain the outer fabric. The modified zinc acetate content accounts for 4~8% of the nylon chip mass. S2. The polyester chips are placed in a screw extruder and heated to melt at 280~290℃. Then, they are melt-spun to obtain polyester fibers. The polyester fibers are then spun to obtain polyester yarn. The polyester yarn is then woven by a loom to obtain the inner fabric. S3. Spray the first finishing liquid onto the surface of the outer fabric. After spraying, keep the outer fabric at 50-60℃ for 20-30 minutes and then dry it to obtain the finished outer fabric. The spraying volume of the first finishing liquid is 50-60 mL / cm². 2 ; S4. Apply polyurethane hot melt adhesive to the inner layer fabric, then place the finished outer layer fabric on the inner layer fabric, and hot press for 40~60s to obtain the pressed fabric; wherein, the mass ratio of the outer layer fabric to the inner layer fabric is 1:0.8~1. S5. Immerse the pressed fabric in the second finishing solution multiple times, with each immersion lasting 40-60 minutes. Weigh the pressed fabric after each immersion. Then keep the pressed fabric at 80-90℃. After each immersion, when the weight of the pressed fabric decreases by M, proceed with the next immersion. Continue until M ≤ 25% to complete the immersion. Then wash and dry the fabric to obtain the wear-resistant composite fabric. The values ​​of M conform to the following relationship: Where M is the weight reduction of the pressed fabric; M1 is a constant, ranging from 0.5 to 0.6; n is the number of immersions; and Δm is the rate of change of the weight reduction of the pressed fabric, ranging from 10 to 20%.

[0006] Note: The above-mentioned abrasion-resistant composite fabric uses nylon non-woven fabric as the outer layer, and the abrasion resistance of the outer layer is improved by the first finishing solution. Polyester textile fabric is used as the inner layer, and the softness of the abrasion-resistant composite fabric is improved by the second finishing solution. The second finishing solution can wash away the modified zinc acetate in the outer layer, so that a microporous structure appears on the outer layer, ensuring the breathability and abrasion resistance of the abrasion-resistant composite fabric and improving the comfort of the fabric.

[0007] Further, in step S1, the method for preparing the modified zinc acetate includes the following steps: S1-1. Add polydimethylsiloxane to n-hexane and stir for 10-15 minutes to obtain a mixture; wherein the mass ratio of polydimethylsiloxane to n-hexane is 1:5-7. S1-2. Add zinc acetate to the mixture, then ultrasonically disperse for 5-10 minutes to obtain a mixed slurry; wherein the amount of zinc acetate added accounts for 10-20% of the mass of the mixture. S1-3. Heat the mixed slurry at 70~80℃ until all the liquid in the mixed slurry evaporates. Then, keep the remaining solid at 100~110℃ for 60~120 minutes to obtain modified zinc acetate. Note: The above method modifies zinc acetate with polydimethylsiloxane, which improves the compatibility between zinc acetate and nylon. At the same time, it can form a hydrophobic layer on zinc acetate, preventing the zinc acetate from decomposing under the action of the first finishing solution.

[0008] Furthermore, in step S1, the temperature during hot rolling reinforcement is 105~155℃, and the pressure is 0.5~3MPa.

[0009] Note: The above hot-rolling reinforcement parameters can fully reinforce the fiber web and ensure the strength of the outer fabric.

[0010] Further, in step S3, the first finishing solution comprises the following components by weight: 15-20 parts acrylic acid, 1-3 parts ammonium persulfate, 5-10 parts nano calcium carbonate, 4-8 parts polyvinyl alcohol, 2-4 parts 2-hydroxybenzophenone, and 70-80 parts deionized water.

[0011] Note: The first finishing liquid can form a polyacrylic acid coating on the outer fabric to improve the abrasion resistance of the outer fabric. Since there is a hydrophobic layer on the surface of the modified zinc acetate, the first finishing liquid will not form a coating on the modified zinc acetate, thus avoiding the inability to wash off the modified zinc acetate and causing blockage of the microporous structure.

[0012] Further, in step S3, the area already sprayed when the first finishing liquid is sprayed is recorded as S0, and the total area of ​​the outer fabric is recorded as S1. At the same time as the first finishing liquid is sprayed, an ultraviolet lamp is used to irradiate the outer fabric. The initial irradiation power of the ultraviolet lamp is 300~400W, the irradiation distance is 50~60cm, and for every 1 / 3 of S0 increases by S1, the irradiation power of the ultraviolet lamp increases by 80~100W until S0=S1. Then the power of the ultraviolet lamp begins to remain constant and continues to irradiate for 10~15 minutes, after which the irradiation is completed.

[0013] Explanation: Ultraviolet irradiation can effectively cure the first finishing liquid, thereby improving the adhesion between the polyacrylic coating and the outer fabric. Furthermore, gradually increasing the irradiation power of the ultraviolet lamp allows the first finishing liquid to fully absorb ultraviolet light, ensuring the strength of the polyacrylic coating while reducing damage to the outer fabric from the ultraviolet lamp.

[0014] Furthermore, in step S4, the coating thickness of the polyurethane hot melt adhesive is 0.05~0.10mm.

[0015] Note: Limiting the coating thickness can ensure the strength of the abrasion-resistant composite fabric and prevent cracking during use.

[0016] Furthermore, in step S4, the hot pressing pressure is 2~4MPa and the temperature is 120~150℃.

[0017] Note: Limiting the hot-pressing parameters allows the polyurethane hot melt adhesive to fully cure, ensuring the bonding strength between the outer and inner fabric layers.

[0018] Furthermore, the second finishing solution comprises, by weight, the following components: 10-20 parts polyacrylamide, 2-6 parts sodium laurylate, 1-3 parts sodium hydroxide, 5-10 parts polypropylene glycol, and 90-100 parts deionized water.

[0019] Explanation: Sodium laurate in the second finishing solution can dissolve the hydrophobic layer on the modified zinc acetate, allowing the zinc acetate to dissolve in the second finishing solution and creating a microporous structure on the outer fabric. At the same time, polyacrylamide and polyacrylic acid coating can form a cross-linked network under the action of zinc acetate, improving the softness of the wear-resistant composite fabric.

[0020] The beneficial effects of this invention are: (1) The present invention uses nylon non-woven fabric as the outer layer fabric and improves the wear resistance of the outer layer fabric by the first finishing liquid. It uses polyester textile fabric as the inner layer fabric and improves the softness of the wear-resistant composite fabric by the second finishing liquid. The second finishing liquid can wash away the modified zinc acetate in the outer layer fabric, so that a microporous structure appears on the outer layer fabric, ensuring the breathability and wear resistance of the wear-resistant composite fabric and improving the comfort of the fabric.

[0021] (2) The present invention can form a polyacrylic acid coating on the outer fabric by means of the first finishing liquid to improve the wear resistance of the outer fabric. Since there is a hydrophobic layer on the surface of the modified zinc acetate, the first finishing liquid will not form a coating on the modified zinc acetate. Then, the hydrophobic layer on the modified zinc acetate is dissolved by the second finishing liquid, so that the zinc acetate can be dissolved in the second finishing liquid, so that a microporous structure appears on the outer fabric, avoiding the blockage of micropores on the surface of the wear-resistant composite fabric. Detailed Implementation

[0022] To further illustrate the methods and effects of this invention, the technical solution of this invention will be clearly and completely described below in conjunction with experiments.

[0023] Example 1: A method for preparing a lightweight, microporous, breathable, and abrasion-resistant composite fabric, comprising the following steps: S1. Nylon chips are mixed with modified zinc acetate and placed in a screw extruder. After melting at 255°C, they are melt-spun to obtain nylon fibers. The nylon fibers are laid on a spinning screen to form a fiber web, which is then hot-rolled to reinforce the web and obtain the outer fabric. The modified zinc acetate accounts for 6% of the mass of the nylon chips. The hot-rolling temperature is 130°C and the pressure is 1.5 MPa. The nylon chips are nylon 6 chips. S2. The polyester chips are placed in a screw extruder, heated and melted at 285°C, and then melt-spun to obtain polyester fibers. The polyester fibers are then spun to obtain polyester yarn, which is then woven on a loom to obtain the inner fabric. S3. Spray the first finishing liquid onto the surface of the outer fabric. After spraying, keep the outer fabric at 55℃ for 25 minutes and then dry it to obtain the finished outer fabric. The spraying volume of the first finishing liquid is 55 mL / cm². 2The area sprayed with the first finishing liquid is denoted as S0, and the total area of ​​the outer fabric is denoted as S1. At the same time as the first finishing liquid is sprayed, the outer fabric is irradiated with ultraviolet lamps. The initial irradiation power of the ultraviolet lamps is 350W, and the irradiation distance is 55cm. For every 1 / 3 of S0 increases in S1, the irradiation power of the ultraviolet lamps increases by 90W until S0=S1. At this point, the power of the ultraviolet lamps remains constant and continues to irradiate for 12 minutes, after which the irradiation is completed. S4. Apply polyurethane hot melt adhesive to the inner layer fabric, then place the finished outer layer fabric on the inner layer fabric, and hot press for 50 seconds to obtain the pressed fabric; wherein, the mass ratio of the outer layer fabric to the inner layer fabric is 1:0.9; the coating thickness of the polyurethane hot melt adhesive is 0.08mm; the hot pressing pressure is 3MPa and the temperature is 135℃. S5. The pressed fabric is immersed in the second finishing solution multiple times, with each immersion time being 50 minutes. After each immersion, the pressed fabric is weighed. Then, the pressed fabric is kept at 85°C. After each immersion, the weight of the pressed fabric is reduced by M before the next immersion is carried out. The immersion is completed when M ≤ 25%. The fabric is then washed and dried to obtain the wear-resistant composite fabric. The values ​​of M conform to the following relationship: Where M represents the weight reduction of the pressed fabric; M1 is a constant with a value of 0.55; n is the number of immersions; and Δm is the rate of change of the weight reduction of the pressed fabric, with a value of 15%. The method for preparing the modified zinc acetate includes the following steps: S1-1. Polydimethylsiloxane is added to n-hexane and stirred for 12 minutes to obtain a mixture; wherein the mass ratio of polydimethylsiloxane to n-hexane is 1:6. S1-2. Add zinc acetate to the mixture, then ultrasonically disperse for 8 minutes to obtain a mixed slurry; wherein the amount of zinc acetate added accounts for 15% of the mass of the mixture. S1-3. Heat the mixed slurry at 75°C until all the liquid in the mixed slurry evaporates, and then keep the remaining solid at 105°C for 90 minutes to obtain modified zinc acetate. The first finishing solution, by weight, includes the following components: 18 parts acrylic acid, 2 parts ammonium persulfate, 8 parts nano calcium carbonate, 6 parts polyvinyl alcohol, and 75 parts deionized water; the second finishing solution, by weight, includes the following components: 15 parts polyacrylamide, 4 parts sodium laurylate, 2 parts sodium hydroxide, 8 parts polypropylene glycol, 3 parts 2-hydroxybenzophenone, and 95 parts deionized water.

[0024] Example 2: This example is basically the same as Example 1, except that the amount of modified zinc acetate added accounts for 4% of the mass of nylon chips.

[0025] Example 3: This example is basically the same as Example 1, except that the amount of modified zinc acetate added accounts for 8% of the mass of nylon chips.

[0026] Example 4: This example is basically the same as Example 1, except that the mass ratio of polydimethylsiloxane to n-hexane is 1:5.

[0027] Example 5: This example is basically the same as Example 1, except that the mass ratio of polydimethylsiloxane to n-hexane is 1:7.

[0028] Example 6: This example is basically the same as Example 1, except that the amount of zinc acetate added accounts for 10% of the mass of the mixture.

[0029] Example 7: This example is basically the same as Example 1, except that the amount of zinc acetate added accounts for 20% of the mass of the mixture.

[0030] Example 8: This example is basically the same as Example 1, except that the first finishing solution includes the following components by weight: 15 parts acrylic acid, 1 part ammonium persulfate, 5 parts nano calcium carbonate, 4 parts polyvinyl alcohol, 2 parts 2-hydroxybenzophenone, and 70 parts deionized water.

[0031] Example 9: This example is basically the same as Example 1, except that the first finishing solution includes the following components by weight: 20 parts acrylic acid, 3 parts ammonium persulfate, 10 parts nano calcium carbonate, 8 parts polyvinyl alcohol, 4 parts 2-hydroxybenzophenone, and 80 parts deionized water.

[0032] Example 10: This example is basically the same as Example 1, except that the spraying volume of the first finishing liquid is 50 mL / cm. 2 .

[0033] Example 11: This example is basically the same as Example 1, except that the spraying volume of the first finishing liquid is 60 mL / cm. 2 .

[0034] Example 12: This example is basically the same as Example 1, except that the area sprayed when the first finishing liquid is sprayed is recorded as S0, and the total area of ​​the outer fabric is recorded as S1. At the same time as the first finishing liquid is sprayed, an ultraviolet lamp is used to irradiate the outer fabric. The initial irradiation power of the ultraviolet lamp is 300W, the irradiation distance is 50cm, and for every 1 / 3 of S0 increases, the irradiation power of the ultraviolet lamp increases by 80W.

[0035] Example 13: This example is basically the same as Example 1, except that the area sprayed when the first finishing liquid is sprayed is recorded as S0, and the total area of ​​the outer fabric is recorded as S1. At the same time as the first finishing liquid is sprayed, an ultraviolet lamp is used to irradiate the outer fabric. The initial irradiation power of the ultraviolet lamp is 400W, the irradiation distance is 60cm, and for every 1 / 3 of S0 increases, the irradiation power of the ultraviolet lamp increases by 100W.

[0036] Example 14: This example is basically the same as Example 1, except that the second finishing liquid includes the following components by weight: 10 parts polyacrylamide, 2 parts sodium laurylate, 1 part sodium hydroxide, 5 parts polypropylene glycol, and 90 parts deionized water.

[0037] Example 15: This example is basically the same as Example 1, except that the second finishing liquid includes the following components by weight: 20 parts polyacrylamide, 6 parts sodium laurylate, 3 parts sodium hydroxide, 10 parts polypropylene glycol, and 100 parts deionized water.

[0038] Example 16: This example is basically the same as Example 1, except that M1 is 0.5.

[0039] Example 17: This example is basically the same as Example 1, except that M1 is 0.6.

[0040] Example 18: This example is basically the same as Example 1, except that Δm is 10%.

[0041] Example 19: This example is basically the same as Example 1, except that Δm is 20%.

[0042] Comparative Example 1: Referring to Example 1, the modified zinc acetate was replaced with zinc acetate.

[0043] Comparative Example 2: Referring to Example 1, the first finishing liquid was not sprayed onto the surface of the outer fabric.

[0044] Comparative Example 3: Referring to Example 1, the irradiation power of the ultraviolet lamp was kept constant at 350W.

[0045] Comparative Example 4: Referring to Example 1, the second finishing solution was replaced with a commercially available finishing solution.

[0046] Comparative Example 5: Referring to Example 1, the weight reduction of the pressed fabric was kept constant at 55% each time it was kept warm.

[0047] Experimental Example: The abrasion resistance and air permeability of the abrasion-resistant composite fabrics prepared in each embodiment and comparative example were tested. Abrasion resistance was tested according to GB / T 21196.2-2007 with a load pressure of 9 kPa. Air permeability was tested according to GB / T 5453-1997. The specific investigation is as follows: Experiment Example 1: Investigating the effects of the amount of modified zinc acetate added and preparation parameters on the properties of abrasion-resistant composite fabrics. Using Examples 1-7 and Comparative Example 1 as experimental comparisons, the wear-resistant composite fabric properties under different amounts of modified zinc acetate and preparation parameters are shown in Table 1 below: Table 1. Abrasion-resistant composite fabric properties under different amounts of modified zinc acetate and preparation parameters.

[0048] As shown in Table 1, compared with Examples 1, 2, and 3, the wear resistance of the wear-resistant composite fabric gradually decreased and the air permeability gradually increased with the increase of the amount of modified zinc acetate added. This may be because the addition of modified zinc acetate forms a microporous structure that improves air permeability, but it also leads to a decrease in the strength of the outer fabric. The wear-resistant composite fabric of Example 1 has the best overall performance. Therefore, the amount of modified zinc acetate added in Example 1 is the optimal.

[0049] Compared with Examples 1, 4, 5, 6, and 7: The wear-resistant composite fabric of Example 1 has the highest number of wear cycles and air permeability, indicating that the wear-resistant composite fabric of Example 1 has the best wear resistance and air permeability. This may be because under the modified zinc acetate preparation parameters of Example 1, the compatibility between the outer fabric and the modified zinc acetate is the best, and a uniform microporous structure can be formed. Therefore, the modified zinc acetate preparation parameters selected in Example 1 are optimal.

[0050] Compared with Comparative Example 1, after replacing the modified zinc acetate with zinc acetate, the wear resistance and air permeability of the wear-resistant composite fabric both decreased. This may be because the unmodified zinc acetate has poor compatibility with the outer fabric, and the unmodified zinc acetate will be washed away by the first finishing liquid, resulting in the blockage of the microporous structure.

[0051] Experiment Example 2: Investigating the effects of the composition and spraying amount of the first finishing liquid on the performance of abrasion-resistant composite fabrics. Using Examples 1, 8-11, and Comparative Example 2 as experimental comparisons, the abrasion-resistant composite fabric properties under different compositions and spray amounts of the first finishing liquid are shown in Table 2 below: Table 2. Abrasion-resistant composite fabric performance under different components and spraying amounts of the first finishing liquid.

[0052] As shown in Table 2, compared with Examples 1, 8, 9, 10, and 11, the wear-resistant composite fabric of Example 1 has the highest number of wear cycles and air permeability, indicating that the wear-resistant composite fabric of Example 1 has the best wear resistance and air permeability. This may be because the outer fabric can form a uniform wear-resistant coating under the composition and spraying amount of the first finishing liquid in Example 1. Therefore, the composition and spraying amount of the first finishing liquid selected in Example 1 are optimal.

[0053] Compared with Comparative Example 2, Example 1 shows that without spraying the first finishing liquid onto the surface of the outer fabric, the number of abrasion-resistant composite fabric cycles is significantly reduced. This may be because the outer fabric of Example 1 cannot form an abrasion-resistant coating. Therefore, the abrasion-resistant composite fabric preparation method selected in Example 1 is optimal.

[0054] Experiment Example 3: Investigating the effect of ultraviolet irradiation power on the properties of wear-resistant composite fabrics. Using Examples 1, 12, 13 and Comparative Example 3 as experimental comparisons, the wear-resistant composite fabric properties under different ultraviolet irradiation powers are shown in Table 3 below: Table 3. Abrasion-resistant composite fabric properties under different UV irradiation powers

[0055] As shown in Table 3, compared with Examples 1, 12, and 13, the wear-resistant composite fabric of Example 1 has the highest number of wear cycles and air permeability, indicating that the wear-resistant composite fabric of Example 1 has the best wear resistance and air permeability. This may be because under the ultraviolet irradiation power of Example 1, the first finishing liquid can be fully cured and form a coating. Therefore, the ultraviolet irradiation power selected in Example 1 is optimal.

[0056] Compared with Comparative Example 3, the abrasion resistance and breathability of the abrasion-resistant composite fabric decreased after the irradiation power of the ultraviolet lamp was kept constant. This may be because the first finishing liquid failed to cure fully. Therefore, the ultraviolet lamp irradiation method selected in Example 1 is the optimal one.

[0057] Experiment Example 4: Investigating the effects of the composition of the second finishing solution and impregnation parameters on the performance of abrasion-resistant composite fabrics. Using Examples 1, 14-19 and Comparative Examples 4-5 as experimental comparisons, the abrasion-resistant composite fabric properties under different components and impregnation parameters of the second finishing solution are shown in Table 4 below: Table 4. Abrasion-resistant composite fabric performance under different components and impregnation parameters of the second finishing solution.

[0058] As shown in Table 4, compared with Examples 1, 14, 15, 16, 17, 18, and 19, the abrasion-resistant composite fabric of Example 1 has the highest abrasion resistance and air permeability, indicating that the abrasion-resistant composite fabric of Example 1 has the best abrasion resistance and air permeability. This may be because the modified zinc acetate can be fully washed away under the composition of the second finishing liquid and the impregnation parameters of Example 1. Therefore, the composition of the second finishing liquid and the impregnation parameters selected in Example 1 are optimal.

[0059] Compared with Comparative Example 4, in Example 1, after replacing the second finishing liquid with a commercially available finishing liquid, the abrasion resistance and breathability of the abrasion-resistant composite fabric both decreased. This may be because the commercially available finishing liquid cannot fully wash away the modified zinc acetate and form a cross-linked structure with the abrasion-resistant coating on the outer fabric. Therefore, the second finishing liquid selected in Example 1 has a better composition.

[0060] Compared with Comparative Example 5, in Example 1, after each heat treatment until the weight reduction of the pressed fabric was constant, the abrasion resistance and breathability of the abrasion-resistant composite fabric both decreased. This may be because the modified zinc acetate was not fully washed away. Therefore, the impregnation method selected in Example 1 is better.

Claims

1. A method for preparing a lightweight, microporous, breathable, and wear-resistant composite fabric, characterized in that, Includes the following steps: S1. Nylon chips are mixed with modified zinc acetate and placed in a screw extruder. After melting at 250~260℃, they are melt-spun to obtain nylon fibers. The nylon fibers are laid on a spinning screen to form a fiber web, which is then hot-rolled to reinforce the web and obtain the outer fabric. The modified zinc acetate content accounts for 4~8% of the nylon chip mass. S2. The polyester chips are placed in a screw extruder and heated to melt at 280~290℃. Then, they are melt-spun to obtain polyester fibers. The polyester fibers are then spun to obtain polyester yarn. The polyester yarn is then woven by a loom to obtain the inner fabric. S3. Spray the first finishing liquid onto the surface of the outer fabric. After spraying, keep the outer fabric at 50-60℃ for 20-30 minutes and then dry it to obtain the finished outer fabric. The spraying volume of the first finishing liquid is 50-60 mL / cm². 2 ; S4. Apply polyurethane hot melt adhesive to the inner layer fabric, then place the finished outer layer fabric on the inner layer fabric, and hot press for 40~60s to obtain the pressed fabric; wherein, the mass ratio of the outer layer fabric to the inner layer fabric is 1:0.8~1. S5. Immerse the pressed fabric in the second finishing solution multiple times, with each immersion lasting 40-60 minutes. Weigh the pressed fabric after each immersion. Then keep the pressed fabric at 80-90℃. After each immersion, when the weight of the pressed fabric decreases by M, proceed with the next immersion. Continue until M ≤ 25% to complete the immersion. Then wash and dry the fabric to obtain the wear-resistant composite fabric. The values ​​of M conform to the following relationship: Where M is the weight reduction of the pressed fabric; M1 is a constant, ranging from 0.5 to 0.6; n is the number of immersions; and Δm is the rate of change of the weight reduction of the pressed fabric, ranging from 10 to 20%.

2. The method for preparing a lightweight, microporous, breathable, and wear-resistant composite fabric according to claim 1, characterized in that, In step S1, the method for preparing the modified zinc acetate includes the following steps: S1-1. Add polydimethylsiloxane to n-hexane and stir for 10-15 minutes to obtain a mixture; wherein the mass ratio of polydimethylsiloxane to n-hexane is 1:5-7. S1-2. Add zinc acetate to the mixture, then ultrasonically disperse for 5-10 minutes to obtain a mixed slurry; wherein the amount of zinc acetate added accounts for 10-20% of the mass of the mixture. S1-3. Heat the mixed slurry at 70~80℃ until all the liquid in the mixed slurry evaporates, and then keep the remaining solid at 100~110℃ for 60~120 minutes to obtain modified zinc acetate.

3. The method for preparing a lightweight, microporous, breathable, and wear-resistant composite fabric according to claim 1, characterized in that, In step S1, the temperature during hot rolling reinforcement is 105~155℃ and the pressure is 0.5~3MPa.

4. The method for preparing a lightweight, microporous, breathable, and wear-resistant composite fabric according to claim 1, characterized in that, In step S3, the first finishing solution comprises the following components by weight: 15-20 parts acrylic acid, 1-3 parts ammonium persulfate, 5-10 parts nano calcium carbonate, 4-8 parts polyvinyl alcohol, 2-4 parts 2-hydroxybenzophenone, and 70-80 parts deionized water.

5. The method for preparing a lightweight, microporous, breathable, and wear-resistant composite fabric according to claim 1, characterized in that, In step S3, the area sprayed with the first finishing liquid is recorded as S0, and the total area of ​​the outer fabric is recorded as S1. While the first finishing liquid is being sprayed, an ultraviolet lamp is used to irradiate the outer fabric. The initial irradiation power of the ultraviolet lamp is 300~400W, and the irradiation distance is 50~60cm. For every 1 / 3 of S0 increases by S1, the irradiation power of the ultraviolet lamp increases by 80~100W until S0=S1. At this point, the power of the ultraviolet lamp begins to remain constant and continues to irradiate for 10~15 minutes, after which the irradiation is completed.

6. The method for preparing a lightweight, microporous, breathable, and wear-resistant composite fabric according to claim 1, characterized in that, In step S4, the coating thickness of the polyurethane hot melt adhesive is 0.05~0.10mm.

7. The method for preparing a lightweight, microporous, breathable, and wear-resistant composite fabric according to claim 1, characterized in that, In step S4, the hot pressing pressure is 2~4MPa and the temperature is 120~150℃.

8. The method for preparing a lightweight, microporous, breathable, and wear-resistant composite fabric according to claim 1, characterized in that, The second finishing solution comprises the following components by weight: 10-20 parts polyacrylamide, 2-6 parts sodium laurylate, 1-3 parts sodium hydroxide, 5-10 parts polypropylene glycol, and 90-100 parts deionized water.

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