High-wear-resistance flame-retardant tear-resistant polyester fabric and preparation method thereof

Abstract

The invention discloses a highly wear-resistant flame-retardant tear-resistant polyester fabric and a preparation method thereof, and belongs to the technical field of furniture fabrics, and the highly wear-resistant flame-retardant tear-resistant polyester fabric is composed of a three-layer structure which sequentially comprises a surface layer, a middle layer and a bottom layer. The preparation method comprises the following steps: S1, blending the high-strength aramid fiber and the elastic polyester bicomponent fiber in proportion, weaving into a surface fabric, and carrying out hot air stentering treatment; s2, preparing a middle buffer layer, adding silicon-based aerogel particles into polyester-based bonding resin, stirring and dispersing for 15 minutes, and uniformly coating on the surface layer by using multi-nozzle spraying equipment; s3, carrying out alcohol swelling treatment on the low-density high-elasticity polyester woven bottom layer fabric for 20-40 minutes; s4, sequentially overlapping the surface layer fabric, the middle buffer layer and the low-density high-elasticity polyester woven bottom layer fabric by adopting a polydopamine modified polyurethane binder; and S5, cooling the hot-pressed fabric to normal temperature, performing tension shaping and shearing treatment, and packaging to obtain a finished product. The beneficial effects comprise that through structure optimization and multi-component cooperation, coordination and unification of high wear resistance, excellent flame resistance and excellent tear resistance are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of furniture fabrics, and more particularly to a highly wear-resistant, flame-retardant, and tear-resistant polyester fabric and a preparation method thereof. Background Art

[0002] The development of highly wear-resistant, flame-retardant, and tear-resistant polyester sofa fabrics stems from the demand for improved overall performance in terms of durability, safety, and comfort. As a frequently used piece of furniture, sofa fabrics must withstand long-term pressure, friction, and stretching, while also meeting fire safety regulations and ensuring a soft touch and easy cleanability.

[0003] Early sofa fabrics were mostly made of cotton, linen or ordinary polyester. Although they have a certain degree of softness, they have obvious defects: ordinary polyester fabrics are not wear-resistant enough and are prone to pilling and local wear after long-term use; although traditional flame retardant treatments can improve fire resistance, they will make the fabric feel stiff and reduce breathability, affecting the user experience; in addition, existing fabrics have weak tear resistance and are prone to cracks when scratched by children, scraped by pets, or accidentally pulled, shortening the service life of the sofa.

[0004] Since the 21st century, as the furniture industry's demand for functional fabrics has escalated, the industry has begun experimenting with improving the performance of sofa fabrics through fiber modification and structural optimization. For example, high-strength fiber blends have been used to enhance wear resistance, while flame-retardant coatings have been introduced. However, existing technologies still face key challenges: improving flame retardancy and tear resistance often comes at the expense of softness and breathability. Furthermore, some wear-resistant fabrics, due to their high fiber density, have a rough feel, failing to meet the core requirement of a comfortable sofa. Summary of the Invention

[0005] The object of the present invention is to provide a highly wear-resistant, flame-retardant and tear-resistant polyester fabric and a preparation method thereof, so as to solve the problems raised in the above background technology.

[0006] Technical solution: The fabric is composed of a three-layer structure, including a surface layer, a middle layer and a bottom layer in sequence; The surface layer is a fabric layer formed by interweaving high-strength aramid fibers and elastic polyester bicomponent fibers, with a fiber weaving density of 140×85 fibers / 10cm and a fiber interweaving angle of 50 to 60 degrees; The intermediate layer comprises a composite buffer layer of a silicon-based aerogel microporous filler, wherein the aerogel filler has a particle size of 50 to 150 nanometers and the filler accounts for 3 to 5% of the mass of the intermediate layer; The bottom layer is woven from low-density high-elastic polyester fibers with a linear density of 0.5 to 0.8 dtex. The bottom layer is swollen with alcohol to form a microporous structure with a volume share of 20% to 35%.

[0007] The surface layer, the middle layer and the bottom layer are compounded by a thermally reversible cross-linking adhesive. The adhesive is a polydopamine-modified polyurethane elastomer with a melting point of 160 to 180° C. and a cross-linking density of 0.8 to 1.2 mmol / g.

[0008] Preferably, the high-strength aramid fiber has a single-filament breaking strength of 3.2 to 3.6 cN / dtex and an elongation at break of 2.5% to 4.0%.

[0009] Preferably, the elastic polyester fiber has a tensile resilience of more than 95% and a melting point of 235 to 245°C.

[0010] Preferably, the aerogel filler is a silicon-based aerogel modified by a silane coupling agent, and has a porosity of more than 90%.

[0011] Preferably, the polydopamine-modified polyurethane elastomer has a peel strength of not less than 150 N / 5 cm and has heat-induced self-healing bonding properties.

[0012] Preferably, the overall air permeability of the fabric is 4500 to 6500 g / m 2 ·After 24 hours, the softness at room temperature is 0.015 to 0.030N.

[0013] Preferably, the method comprises the following steps: S1. High-strength aramid fiber and elastic polyester bicomponent fiber are blended and woven into a surface fabric with a weave density of 140 × 85 fibers / 10 cm and an interweaving angle of 50 to 60 degrees. The fabric is then subjected to a hot air tentering treatment at a temperature of 190 to 200°C for 90 to 120 seconds. S2. Prepare the intermediate buffer layer by adding silica-based aerogel particles having a particle size of 50 to 150 nm to a polyester-based binder resin, stirring and dispersing for 15 minutes, and applying the mixture evenly to the surface using a multi-nozzle spraying device to a thickness of 30 to 50 microns, and drying at room temperature for 30 minutes. S3. The low-density, high-elasticity polyester woven base fabric is swollen with alcohol for 20 to 40 minutes and dried to form a 20% to 35% microporous structure; S4. The surface fabric, the intermediate buffer layer and the low-density, high-elasticity polyester woven bottom fabric are laminated sequentially using a polydopamine-modified polyurethane binder, and the hot pressing conditions are a temperature of 170°C, a pressure of 0.4 MPa, and a time of 10 minutes; S5. The hot-pressed fabric is cooled to room temperature, tension-set and sheared before being rolled into finished products.

[0014] Preferably, after the aerogel composite coating is applied in S2, a low-temperature cross-linking treatment is further performed, and the treatment conditions are a temperature of 90 to 110° C. and a time of 10 to 20 minutes.

[0015] Preferably, after S5 is completed, the obtained fabric is subjected to low-temperature plasma surface treatment, with treatment parameters of power of 150 to 250 W and treatment time of 30 to 60 seconds.

[0016] Compared with the prior art, the advantages of the present invention are: (1) The present invention significantly improves the flame retardancy of polyester fabrics while maintaining their softness by introducing a phosphorus-nitrogen synergistic flame retardant and a heat-resistant silicone elastomer into the fabric. Vertical burning tests show that the carbonization length of the fabric is less than 5 cm, and the softness reduction rate is controlled within 10%. This solves the problem of improved flame retardancy but significantly reduced softness in the prior art.

[0017] (2) The present invention utilizes a highly oriented, high-strength polyester fiber interwoven reinforcement structure, which, in conjunction with a multi-layer microgrid support layer, enhances the fabric's tear resistance and wear life. Test results show that the fabric's tear strength is increased by 35%, and after 10,000 abrasion tests, the surface remains undamaged, meeting the demands of high-frequency use under extreme conditions.

[0018] (3) The present invention improves structural and thermal stability by combining a thermosetting polyester modified resin coating with an aerogel buffer interlayer. The fabric maintains dimensional stability in a continuous dry heat environment at 150°C, with a deformation rate of less than 2%. It also has excellent resistance to thermal shock and is suitable for high-temperature exposure scenarios such as industrial protection and military and police equipment.

[0019] (4) This invention introduces plasma pretreatment combined with coating curing technology to improve surface adhesion and finishing agent penetration efficiency. After surface modification, the contact angle of the fabric is controlled to be above 105°, which provides primary hydrophobicity, effectively inhibits dirt adsorption and static electricity accumulation, and extends the service life of the fabric in complex outdoor environments.

[0020] (5) This invention uses a halogen-free, environmentally friendly flame retardant system that does not release halogen, formaldehyde, or other toxic gases. It also uses a low-smoke enhancer and a cross-linked anti-migration agent to improve flame retardancy while reducing potential harm to the environment and human health. The product has been tested for toxic gas release and complies with EU REACH standards, demonstrating excellent ecological compatibility and green manufacturing suitability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall process of the method for preparing a highly wear-resistant, flame-retardant and tear-resistant polyester fabric of the present invention. DETAILED DESCRIPTION

[0022] Example Examples 1-3 Example 1: A highly wear-resistant, flame-retardant, and tear-resistant polyester fabric is composed of a three-layer structure, including a surface layer, a middle layer, and a bottom layer in sequence; The surface layer is a fabric layer formed by interweaving high-strength aramid fiber and elastic polyester bicomponent fiber, with a fiber weaving density of 140×85 fibers / 10cm and a fiber interweaving angle of 50 to 60 degrees; The middle layer comprises a composite buffer layer of a silicon-based aerogel microporous filler, the aerogel filler has a particle size of 50 to 150 nanometers, and the filler accounts for 3% to 5% of the mass of the middle layer; The bottom layer is woven from low-density, high-elastic polyester fibers with a linear density of 0.5 to 0.8 dtex. The bottom layer is swollen with alcohol to form a microporous structure with a volume share of 20% to 35%.

[0023] The surface layer, the middle layer and the bottom layer are compounded by a thermally reversible cross-linking adhesive. The adhesive is a polydopamine-modified polyurethane elastomer with a melting point of 160 to 180° C. and a cross-linking density of 0.8 to 1.2 mmol / g.

[0024] The single-filament breaking strength of high-strength aramid fiber is 3.2 to 3.6 cN / dtex, and the breaking elongation is 2.5% to 4.0%.

[0025] The tensile resilience of elastic polyester fiber is above 95% and its melting point is 235 to 245°C.

[0026] The aerogel filler is a silicon-based aerogel modified by a silane coupling agent, and its porosity is above 90%.

[0027] The peel strength of the polydopamine-modified polyurethane elastomer is not less than 150N / 5cm, and it has heat-induced self-healing bonding properties.

[0028] The overall air permeability of the fabric is 4500 to 6500g / m 2 ·After 24 hours, the softness at room temperature is 0.015 to 0.030N.

[0029] A method for preparing a highly wear-resistant, flame-retardant, and tear-resistant polyester fabric comprises the following steps: S1. High-strength aramid fiber and elastic polyester bicomponent fiber are blended and woven into a surface fabric with a weave density of 140 × 85 fibers / 10 cm and an interweaving angle of 50 to 60 degrees. The fabric is then subjected to a hot air tentering treatment at a temperature of 190 to 200°C for 90 to 120 seconds. S2. Prepare the intermediate buffer layer by adding silica-based aerogel particles having a particle size of 50 to 150 nm to a polyester-based binder resin, stirring and dispersing for 15 minutes, and applying the mixture evenly to the surface using a multi-nozzle spraying device to a thickness of 30 to 50 microns, and drying at room temperature for 30 minutes. S3. The low-density, high-elasticity polyester woven base fabric is swollen with alcohol for 20 to 40 minutes and dried to form a 20% to 35% microporous structure; S4. The surface fabric, the intermediate buffer layer, and the low-density, high-elasticity polyester woven bottom fabric were laminated sequentially using a polydopamine-modified polyurethane adhesive. The hot pressing conditions were a temperature of 170°C, a pressure of 0.4 MPa, and a time of 10 minutes. S5. The hot-pressed fabric is cooled to room temperature, tension-set and sheared before being rolled into finished products.

[0030] In S2, the aerogel composite coating is further subjected to a low-temperature cross-linking treatment after application, with the treatment conditions being a temperature of 90 to 110° C. and a time of 10 to 20 minutes.

[0031] After S5 is completed, the obtained fabric is subjected to low-temperature plasma surface treatment, with treatment parameters of power 150 to 250 W and treatment time 30 to 60 seconds.

[0032] Example 2: The difference from Example 1 is that the amount of flame retardant finishing agent used is increased to 210g / m 2 ; The surface coating system was adjusted to polyester / aerogel composite coating with an application amount of 140g / m 2 ; The grid reinforcement structure is supported by interwoven ultra-high molecular weight polyethylene fibers (UHMWPE), with a spacing of 10 μm.

[0033] The test results are as follows: Carbonization length: 3.6cm; Tear strength: 48N (warp), 45N (weft); Softness retention rate: 87%; Thermal deformation rate: 1.5%.

[0034] Example 3: The difference from Example 2 is that the plasma treatment power is 800 W and the time is extended to 60 seconds; The contact angle is further increased to 112.7°, and the anti-fouling performance is enhanced; The curing temperature was increased to 150°C for 100 seconds to improve adhesion.

[0035] Other properties remained similar, with only a slight decrease in softness to 85%.

[0036] Comparative Examples 1-3 Comparative Example 1: Using conventional flame-retardant polyester fabric technology, polyester fabric: 75D / 36F ordinary polyester yarn; The flame retardant is a brominated halogen-containing flame retardant, with an application amount of 150g / m 2 ; No mesh reinforcement layer; The coating is unmodified polyurethane, with an application amount of 80g / m 2 ; No plasma treatment, only surface padding; Test results are as follows: Char length: 7.8 cm; Tear strength: 30 N (warp), 28 N (weft); Wear resistance: 9,000 times; Softness retention rate: 95%; Contact angle: 78°; There is a significant halogen odor, and the toxicity release exceeds the standard.

[0037] Comparative Example 2: Use the raw materials of Example 2, but do not perform plasma surface treatment, directly perform padding treatment.

[0038] Test results: slightly lower tear strength, 41 N (warp), 39 N (weft); Surface contact angle drops to 85°, easy to adsorb dust; Char length increases to 5.6 cm; Coating adhesion decreases, peeling occurs after five washes.

[0039] Comparative Example 3: Use all parameters of Example 2, but cancel the grid reinforcement structure of the intermediate layer.

[0040] Test results: tear strength decreases to 36 N (warp), 33 N (weft); Overall fabric softness increases to 94%, but wear resistance decreases to 11,000 times; Poor structure stability, thermal deformation rate increases to 3.4%.

[0041] To determine the performance coordination of treated examples and comparative examples on polyester fabric, including flame retardant, tear resistance, softness, wear resistance, thermal deformation rate, etc. The following comparative experiments are designed, and the experimental steps are as follows: Experimental preparation The experimental objects are as follows: Example 2: Polyester fabric containing a grid reinforcement layer, the surface coating is a polyester / aerogel composite coating, and plasma treatment is added.

[0042] Example 3: The same as Example 2, but surface modification is performed under different plasma treatment conditions.

[0043] Comparative Example 1: Conventional flame-retardant polyester fabric, using bromine-containing halogen flame retardant, coating is unmodified polyurethane.

[0044] Comparative Example 2: Use the materials of Example 2, but remove the plasma surface treatment.

[0045] Experimental instruments and equipment: Flame retardant performance test: oxygen index tester Tear strength test: Tear tester (ASTM D2261 standard) Softness test: Softness tester Wear resistance test: wear tester Thermal deformation test: Thermal deformation tester (ASTMD648 standard) Surface contact angle test: contact angle meter The chemical reagents are as follows: Oxygen atmosphere: high purity oxygen Aqueous solution: for contact angle testing and surface treatment Solvents: Solvent-free formulation chemical additives for coating treatment The experimental environment is as follows: Temperature: room temperature (25°C) Humidity: Standard humidity (50%RH) The experimental steps are as follows: Material pretreatment: Each experimental object was first cleaned with water to remove surface impurities and then naturally dried to room temperature.

[0046] According to the process requirements in the examples and comparative examples, the fabrics were treated as follows: Example 2 and Example 3: A plasma treatment device was used to treat the samples at a power of 800 W for 60 seconds (Example 2) and 120 seconds (Example 3), respectively.

[0047] Comparative Example 1: Conventional flame-retardant polyester fabric was directly used without any surface treatment.

[0048] Comparative Example 2: Example 2 was treated without plasma surface treatment.

[0049] Flame retardant performance test: Use an oxygen index tester to measure the oxygen index (OI) of each material and record its combustion performance under standard conditions. The flame retardant grade is evaluated based on the oxygen index results.

[0050] Tear Strength Test: The tear strength of each sample is tested using a tear meter to ensure that the tear resistance of the materials is compared under the same test conditions.

[0051] The test results are expressed in terms of the tear strength in the warp and weft directions (unit: N).

[0052] Softness test: Use a softness tester to measure the softness of the material, record the softness retention rate of each sample, and consider the change in flexibility of the material under extreme conditions.

[0053] Wear resistance test: Use a wear tester to conduct friction and wear tests, calculate the number of wears for each sample, and record the wear resistance performance.

[0054] Thermal deformation test: The thermal deformation rate of the material is measured using a thermal deformation tester to evaluate the morphological changes of different materials under high temperature conditions (unit: %).

[0055] Surface contact angle test: The surface contact angle of each sample is tested using a contact angle measuring instrument to record the surface hydrophobicity and anti-fouling performance of the material.

[0056] The experimental data is shown in Table 1:

[0057] Table 1 The experimental conclusions and analysis are as follows: Flame retardant performance: The oxygen index of Example 2 and Example 3 is significantly higher than that of Comparative Example 1 and Comparative Example 2, indicating that they are superior to traditional materials in terms of flame retardant performance. This is because the plasma surface treatment enhances the flame retardant performance of the polyester fabric, especially in Example 3, with a higher oxygen index, showing stronger flame retardant ability.

[0058] Tear strength: Example 2 and Example 3 perform outstandingly in the tear strength test, significantly higher than Comparative Example 1 and Comparative Example 2, especially in the warp direction. The increased grid reinforcement layer and plasma treatment effectively improve the tear resistance of the material, indicating that they have a significant advantage in strengthening the protective performance.

[0059] Softness: The softness retention rate of Comparative Example 1 is 95%, showing the best performance, but the softness of Example 2 and Example 3 also performs well, at 87% and 85% respectively. Although relatively low, considering its improvement in flame retardant and tear resistance, this slight decrease in softness is acceptable and still provides a comfortable wearing experience.

[0060] Wear resistance: Example 2 and Example 3 perform superiorly in wear resistance, with wear times of 15,000 times and 14,800 times respectively, significantly higher than Comparative Example 1 and Comparative Example 2, showing their application advantages in high friction environments.

[0061] Thermal deformation rate: Example 2 and Example 3 are superior to Comparative Example 1 and Comparative Example 2 in terms of thermal deformation rate, indicating that they can maintain better morphological stability under high temperature conditions, suitable for various high temperature environments.

[0062] Surface contact angle: The surface contact angle of Example 2 and Example 3 is higher, indicating that they have strong water resistance and anti-fouling performance, suitable for use in harsh environments.

[0063] In order to determine the thermal insulation performance of the examples and comparative examples in a high temperature environment, stability in a UV aging environment, waterproof and breathable properties in a hot and humid environment, and dimensional stability and performance retention after washing, the following comparative experiments were designed. The experimental steps are as follows: The experimental items are prepared as follows: Experimental samples: Example 2, Example 3, Comparative Example 1 and Comparative Example 2 Experimental instruments and equipment: heat flow meter (thermal resistivity test) UV aging box (UV-A340nm) Hydrostatic pressure tester (waterproofness) Water vapor permeability tester (JISL1099A1 method) Hot water washing equipment (standard wash times setting) Dimensional stability testing tools (cutting and measuring tools) Experimental environment: normal temperature and humidity, UV test is carried out in the standard UV-A band Washing is carried out at 40℃ water temperature, using non-alkaline detergent, and 10 washing cycles per group The experimental steps are as follows: 1. Thermal insulation performance test (thermal resistance R value) Place the sample on the heat flow meter test platform, heat one side to 75°C, and maintain the other side at 20°C; Measure the heat flow under the temperature difference on both sides of the material and calculate its thermal resistance per unit area (R, unit: m 2 K / W); The greater the thermal resistance, the better the thermal insulation performance.

[0064] The UV aging stability test is as follows: Place the sample in a UV-A aging box, set the wavelength to 340nm and 0.89W / m 2 Strength, aging time is 72 hours; Test the color difference ΔE and tensile strength decrease percentage of the samples before and after aging; The smaller the color difference and the less the intensity drop, the better the UV resistance.

[0065] 3. The waterproof and breathable test is as follows: Waterproofness: Use a hydrostatic pressure tester to apply water pressure to the sample and measure the water column height (unit: mmH2O) of its water resistance; Water vapor permeability: Use a water vapor permeability tester to measure the water vapor permeability per unit area within 24 hours (unit: g / m 2 24 hours); Having both high waterproofness and high moisture permeability is an important indicator of high-quality functional fabrics.

[0066] 4. Dimensional stability test (washing resistance) is as follows: Each sample was cut into 100 × 100 mm and subjected to 10 standard washes; After washing, air dry the dishes, measure the dimensional changes, and record the shrinkage (%); At the same time, its softness and thermal resistance are tested to see if they have decreased significantly to evaluate the functional retention.

[0067] The experimental data are shown in Table 2:

[0068] Table 2 The experimental conclusions and analysis are as follows: Thermal insulation performance: The thermal resistance values ​​of Example 2 and Example 3 are both higher than that of the comparative example samples, indicating that they have better thermal insulation performance under the same thickness conditions and are suitable for high-temperature operations or winter warmth-keeping scenarios.

[0069] Anti-UV aging: After plasma surface modification and co-coating with inorganic sunscreen additives, the color difference ΔE of the example sample after UV aging is small (<2), and the tensile strength decreases by less than 10%, indicating that it can still maintain good mechanical properties under long-term UV radiation.

[0070] The comparative samples showed significant color difference and strength degradation after aging, indicating that they have poor stability and are difficult to use in long-term outdoor environments.

[0071] Waterproof and breathable: Examples 2 and 3 showed high hydrostatic pressure (>11,000 mmH2O) and high moisture permeability (>3,000 g / m 2 24h), taking into account both waterproof and breathable, which is the ideal requirement for high-performance clothing fabrics; The moisture permeability and waterproofness of Comparative Example 1 are both relatively low, and are not suitable for use in humid or sports environments.

[0072] Dimensional stability and washability: Examples 2 and 3 showed shrinkage rates of less than 2% after multiple washes, with high functional retention rates and retaining their original softness and thermal insulation properties, indicating that their post-finishing process properly addressed durability. The shrinkage rate of the comparative example is high, and the performance decline is obvious. There is a risk of performance degradation during long-term use.

[0073] The above shows and describes the basic principles, main features and advantages of the present invention; those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected; the scope of protection claimed in the present invention is defined by the attached claims and their equivalents.

Claims

1. A highly wear-resistant, flame-retardant and tear-resistant polyester fabric, characterized in that: The fabric is composed of a three-layer structure, including a surface layer, a middle layer and a bottom layer in sequence; The surface layer is a fabric layer formed by interweaving high-strength aramid fibers and elastic polyester bicomponent fibers, with a fiber weaving density of 140×85 fibers / 10cm and a fiber interweaving angle of 50 to 60 degrees; The intermediate layer comprises a composite buffer layer of a silicon-based aerogel microporous filler, wherein the aerogel filler has a particle size of 50 to 150 nanometers and the filler accounts for 3% to 5% of the mass of the intermediate layer; The bottom layer is woven from low-density high-elastic polyester fibers with a linear density of 0.5 to 0.8 dtex. The bottom layer is swollen with alcohol to form a microporous structure with a volume share of 20% to 35%.

2. The surface layer, the middle layer and the bottom layer are compounded by a thermoreversible cross-linking adhesive, wherein the adhesive is a polydopamine-modified polyurethane elastomer with a melting point of 160 to 180°C and a cross-linking density of 0.8 to 1.2 mmol / g.

3. The highly wear-resistant, flame-retardant and tear-resistant polyester fabric according to claim 1, characterized in that: The high-strength aramid fiber has a single-filament breaking strength of 3.2 to 3.6 cN / dtex and a breaking elongation of 2.5% to 4.0%.

4. The highly wear-resistant, flame-retardant and tear-resistant polyester fabric according to claim 1, characterized in that: The elastic polyester fiber has a tensile resilience of more than 95% and a melting point of 235 to 245°C.

5. The highly wear-resistant, flame-retardant and tear-resistant polyester fabric according to claim 1, characterized in that: The aerogel filler is a silicon-based aerogel modified by a silane coupling agent, and has a porosity of more than 90%.

6. The highly wear-resistant, flame-retardant and tear-resistant polyester fabric according to claim 1, characterized in that: The polydopamine-modified polyurethane elastomer has a peel strength of not less than 150N / 5cm and has heat-induced self-repairing bonding properties.

7. The highly wear-resistant, flame-retardant and tear-resistant polyester fabric according to claim 1, characterized in that: The overall air permeability of the fabric is 4500 to 6500 g / m 2 ·After 24 hours, the softness at room temperature is 0.015 to 0.030N.

8. A method for preparing highly wear-resistant, flame-retardant and tear-resistant polyester fabric, characterized in that: The following steps are involved: S1. High-strength aramid fiber and elastic polyester bicomponent fiber are blended and woven into a surface fabric with a weave density of 140 × 85 fibers / 10 cm and an interweaving angle of 50 to 60 degrees. The fabric is then subjected to a hot air tentering treatment at a temperature of 190 to 200°C for 90 to 120 seconds. S2. Prepare the intermediate buffer layer by adding silica-based aerogel particles having a particle size of 50 to 150 nm to a polyester-based binder resin, stirring and dispersing for 15 minutes, and applying the mixture evenly to the surface using a multi-nozzle spraying device to a thickness of 30 to 50 microns, and drying at room temperature for 30 minutes. S3. The low-density, high-elasticity polyester woven base fabric is swollen with alcohol for 20 to 40 minutes and dried to form a 20% to 35% microporous structure; S4. The surface fabric, the intermediate buffer layer and the low-density, high-elasticity polyester woven bottom fabric are laminated sequentially using a polydopamine-modified polyurethane binder, and the hot pressing conditions are a temperature of 170°C, a pressure of 0.4 MPa, and a time of 10 minutes; S5. The hot-pressed fabric is cooled to room temperature, tension-set and sheared before being rolled into finished products.

9. The method for preparing a highly wear-resistant, flame-retardant and tear-resistant polyester fabric according to claim 7, characterized in that: After the aerogel composite coating is applied in S2, a low-temperature cross-linking treatment is further performed, with the treatment conditions being a temperature of 90 to 110° C. and a time of 10 to 20 minutes.

10. The method for preparing a highly wear-resistant, flame-retardant and tear-resistant polyester fabric according to claim 7, characterized in that: After S5 is completed, the obtained fabric is subjected to low-temperature plasma surface treatment, with treatment parameters of power 150 to 250 W and treatment time 30 to 60 seconds.

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