Bionic protective fabric

Abstract

The invention discloses a bionic protective fabric, and belongs to the technical field of protective fabrics. According to the technical scheme, the bionic protective fabric comprises base cloth, the base cloth is composed of binding areas and surface and inner layered areas, the binding areas are distributed in a grid shape, the surface and inner layered areas are distributed in a block-shaped dispersing mode, each surface and inner layered area is composed of a surface layer and an inner layer, warp yarns and weft yarns of the surface layer are small elastic yarns, and warp yarns and weft yarns of the inner layer are large elastic yarns. The elastic elongation of the large-elasticity yarn is larger than that of the small-elasticity yarn, the inner layer shrinks, the surface layer arches outwards to form a protrusion, and a hard coating is arranged on the surface of the protrusion. The bionic protective fabric not only has good wear resistance, breathability, softness, scratch resistance and cutting resistance, but also has skin appearances of animals such as bionic snakes, lizards, crocodiles and the like, and can be widely applied to the field of clothing.

Description

Technical Field

[0001] The invention belongs to the technical field of protective fabrics, and in particular relates to a bionic protective fabric. Background Art

[0002] With the continuous advancement of science and technology, people's requirements for the performance and functionality of protective materials are constantly increasing. In certain specific fields, such as healthcare, industrial manufacturing, and military protection, the requirements for protective fabrics are even more stringent. Traditional protective materials have limitations in terms of softness, breathability, and protective performance. Therefore, it is necessary to develop a new type of bionic protective fabric to meet the needs of different application scenarios. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the present invention provides a bionic protective fabric that is not only wear-resistant, breathable, soft, scratch-resistant and cut-resistant, but also has the appearance of bionic snake, lizard, crocodile and other animal skins.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a bionic protective fabric, the bionic protective fabric including a base fabric, the base fabric consisting of a joining area and an inner and outer layered area, the joining area is distributed in a grid shape, the inner and outer layered area is dispersed in blocks, the inner and outer layered area consists of a surface layer and an inner layer, the warp and weft yarns of the surface layer are small elastic yarns, the warp and weft yarns of the inner layer are large elastic yarns, the elastic elongation of the large elastic yarn is greater than the elastic elongation of the small elastic yarn, the inner layer contracts and the surface layer arches outward to form a bulge, and the surface of the bulge is provided with a hard coating.

[0005] Furthermore, the elastic elongation of the small elastic yarn is not greater than 30%, the elastic elongation of the large elastic yarn is not less than 30%, and the difference between the elastic elongation of the small elastic yarn and the large elastic yarn is 55% to 75%.

[0006] Furthermore, the smallest unit of the grid is a regular rhombus or a regular hexagon.

[0007] Furthermore, the area of ​​the smallest unit of the grid is not less than 3mm 2 .

[0008] Furthermore, the projection area of ​​the protrusion is 60% to 75% of the area of ​​the smallest unit of the grid; the projection area of ​​the hard coating is 90% to 100% of the projection area of ​​the protrusion; and the thickness of the hard coating is not less than 0.5 mm.

[0009] Furthermore, the hardness of the hard coating is not less than 30HD.

[0010] Furthermore, the raw materials of the hard coating include thermosetting resin and reinforcement.

[0011] A method for preparing the above-mentioned bionic protective fabric comprises the following steps:

[0012] (1) Using small elastic yarn as the warp and weft yarn of the surface layer and large elastic yarn as the warp and weft yarn of the inner layer to weave a base fabric, and then performing a waterproof and oil-proof treatment on the base fabric;

[0013] (2) preparing a thermosetting prepolymer;

[0014] (3) immersing the protrusions of the base fabric after the waterproof and oil-proof treatment obtained in step (1) into the thermosetting prepolymer prepared in step (2) so that the protrusions of the base fabric are fully covered, the immersion time is 10 to 20 seconds, and a base fabric-resin composite is obtained;

[0015] (4) The base fabric-resin composite prepared in step (3) is placed in a heat curing machine to heat cure the resin at a curing temperature of 70 to 130° C., thereby forming a bionic protective fabric covered with a hard coating.

[0016] In step (2), the preparation of the thermosetting prepolymer comprises the following steps:

[0017] (21) Surface treatment of inorganic powders;

[0018] (22) Prepare a curing agent solution; add dicyandiamide powder, 2-ethyl-4-methylimidazole, and dimethylformamide to a container, and heat in a water bath at 50-70°C while stirring until the powder is completely dissolved;

[0019] (23) Antioxidation, dispersion and wetting of inorganic powder; adding antioxidant, anti-settling dispersant and surface-treated inorganic powder to the curing agent solution obtained in step (22) and stirring thoroughly and evenly;

[0020] (24) Preparing a thermosetting preform doped with inorganic powder; mechanically stirring and uniformly mixing the anti-oxidant, moistened and dispersed inorganic powder and thermosetting resin, and ultrasonically treating to remove excess bubbles, standing at room temperature for 24 to 36 hours, and then slowly stirring to obtain a thermosetting preform doped with inorganic powder.

[0021] Wherein, the surface treatment method of the inorganic powder in step (21) is as follows: prepare a silane coupling agent treatment agent, and prepare the silane coupling agent and deionized water in a ratio of 1:10 to 20 to obtain a silane coupling agent treatment agent, and set aside; weigh an appropriate amount of inorganic powder, add a sufficient amount of silane coupling agent treatment agent, stir to make it fully contact, and the stirring time is 2 to 5 minutes; dry, put the treated inorganic powder into an oven for drying, the drying temperature is 80 to 100°C, and the drying time is 1 to 3 hours; the silane coupling agent is γ-glycidyloxypropyltrimethoxysilane, γ-aminopropyltriethoxysilane or γ-methacryloxypropyltrimethoxysilane.

[0022] The proportions of the raw materials in steps (22) and (23) are as follows: 3 to 5 parts of dicyandiamide powder, 1 to 2 parts of 2-ethyl-4-methylimidazole, 10 to 13 parts of formamide, 1 to 3 parts of antioxidant, and 9 to 18 parts of anti-settling dispersant.

[0023] Wherein, in step (24), the mass ratio of the inorganic powder after anti-oxidation, wetting and dispersion to the thermosetting resin is 2:5-10.

[0024] A textile comprises the above-mentioned bionic protective fabric.

[0025] Compared with existing technologies, the present invention offers significant advantages: By stitching a double-layered structure, the base fabric comprises two distinct regions: a front and back layered area and a stitched area. The front and back layered areas are distributed in blocks, while the stitched areas are arranged in a grid pattern. Small elastic yarns are used as the front warp and weft, while large elastic yarns are used as the back warp and weft. By achieving an elastic elongation of 55-75%, the back layer contracts and the front layer arches outward, forming ridges. A hard coating is applied to the ridges, giving the fabric a skin-like appearance resembling that of snakes, lizards, crocodiles, and other animals. Furthermore, the fabric exhibits air permeability of no less than 50 mm / s, abrasion resistance of no less than 10,000 revolutions, wrinkle resistance of no less than Class 3, and a softness of no more than 40 mm. The present invention ensures that the projected area of ​​the hard coating accounts for no less than 60% of the area of ​​the smallest unit of the grid pattern, the hard coating has a thickness of no less than 0.5 mm, and a hardness of no less than 30 HD, resulting in a biomimetic fabric with cut resistance of no less than Class A3. It can be used to make protective clothing, protective gloves, protective neckbands, protective sleeves, shoe upper materials and other textiles. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is the organizational structure diagram of the base fabric of Example 1;

[0027] Figure 2 This is a physical picture of the base fabric of Example 1;

[0028] Figure 3 This is a physical picture of the bionic protective fabric of Example 1;

[0029] Figure 4 This is a partial enlarged view of the bionic protective fabric of Example 1;

[0030] Figure 5 This is the organizational structure diagram of the base fabric of Example 2;

[0031] Among them, 1, 2, 3, 4... represent the outer warp and outer weft, Ⅰ, Ⅱ, Ⅲ, Ⅳ... represent the inner warp and inner weft, ■ is the warp point of the outer weave, For the economic organization point of the organization, To put it into the longitude and latitude table, The outer weft and inner warp are interwoven. DETAILED DESCRIPTION

[0032] The bionic protective fabric of the present invention is composed of a base fabric and a hard coating arranged on the surface of the base fabric. The base fabric is composed of a joining area and an inner and outer layered area. The joining area is distributed in a grid shape, and the inner and outer layered areas are dispersed in blocks. The inner and outer layered areas are composed of a surface layer and an inner layer. The inner layer shrinks and the surface layer arches outward to form a bulge.

[0033] The warp and weft yarns of the outer layer are low-elastic yarns, while the warp and weft yarns of the inner layer are high-elastic yarns. The elastic elongation of the low-elastic yarns is 30% to 45% of that of the high-elastic yarns, with the elastic elongation of the low-elastic yarns being no greater than 30% and that of the high-elastic yarns being no less than 30%. There is a significant difference in elastic elongation between the low-elastic yarns and the high-elastic yarns. The magnitude of this difference determines the size of the bionic protective fabric's raised surface, which in turn determines its bionic appearance and excellent softness. A greater difference in elastic elongation between the low-elastic yarns and the high-elastic yarns results in a more pronounced raised surface and reduced softness. A smaller difference in elastic elongation between the low-elastic yarns and the high-elastic yarns results in a less pronounced raised surface and improved softness. Preferably, the elastic elongation of the low-elastic yarns is no greater than 30%, while that of the high-elastic yarns is no less than 30%, with the difference in elastic elongation between the low-elastic yarns and the high-elastic yarns being 55% to 75%.

[0034] In the present invention, the raised surface appearance style can be achieved by joining two layers of tissue, the surface tissue and the inner tissue can be plain weave, the small elastic yarn at the joining point is on the raised surface of the bionic protective fabric, and the large elastic yarn is on the back of the bionic protective fabric.

[0035] In the present invention, the raw material of the low-elastic yarn is one or more of cotton, wool, nylon, and polyester fibers. Preferably, the fineness of the low-elastic yarn is 20 to 80 deniers. When the fineness of the low-elastic yarn is greater than 80 deniers, the height of the protrusions in the thickness direction increases, making the fabric thicker and reducing its softness. When the fineness of the low-elastic yarn is less than 20 deniers, the height of the protrusions in the thickness direction decreases, and the protrusion height does not meet the requirements, which is not conducive to surface coating. The raw material of the high-elastic yarn is one or more of diene elastic fiber, polyurethane fiber, polybutylene terephthalate fiber, polyether ester elastic fiber, polytrimethylene terephthalate fiber, or composite elastic fiber.

[0036] The protrusions are distributed in blocks, each coated with a hard coating made from a thermosetting resin and reinforcements. This coating not only enhances the appearance of animal skin, such as snakes, lizards, and crocodiles, but also improves the wear and cut resistance of the bionic protective fabric. The hard resin coating is independent of each other, ensuring breathability. Furthermore, the protrusions extend through the thickness of the fabric, resulting in a low flexural modulus when the bionic protective fabric is bent, resulting in a soft and grippy feel.

[0037] In the present invention, the raw materials of the hard coating include a thermosetting resin and a reinforcement. The thermosetting resin is an epoxy resin, an unsaturated polyester resin, a phenolic resin, a furan resin, a silicone resin, a polyurethane resin, a polyimide resin, a urea-formaldehyde resin, or a melamine-formaldehyde resin. The reinforcement is one or more of an inorganic powder, a short fiber, and a nanomaterial. The inorganic powder is one or more of silicon carbide, silicon nitride, silicon dioxide, aluminum silicate, titanium dioxide, boron carbide, aluminum oxide, aluminum hydroxide, calcium carbonate, talc, calcined kaolin, wollastonite, mica powder, and montmorillonite; the short fiber is one or more of carbon fiber, glass fiber, basalt fiber, boron fiber, ceramic fiber, and metal fiber; and the nanomaterial is one or more of carbon nanotubes and graphene oxide.

[0038] Example 1

[0039] The bionic protective fabric of this embodiment is prepared by the following steps:

[0040] (1) Prepare the base fabric and perform waterproof and oil-proof treatment

[0041] 90s cotton yarn with an elastic elongation of 6% was selected as the small elastic yarn, and 60D circular cross-section polyurethane filament with an elastic elongation of 65% was selected as the large elastic yarn. Figure 1 The base fabric is woven by weaving a double-layer structure;

[0042] The number of warp yarns in the weft yarn cycle of the double-layer structure is 32, and the number of weft yarns in the weft yarn cycle is 32. The structure of the surface layer and the inner layer is plain weave. The surface warp and surface weft of the surface layer are small elastic yarns, and the inner warp and inner weft of the inner layer are large elastic yarns. The arrangement ratio of the surface warp to the inner warp is 1:1, and the arrangement ratio of the surface weft to the inner weft is 1:1. The surface layer and the inner layer are connected by a junction point. The junction point is formed by lifting the inner warp and interweaving with the surface weft. Multiple junction points on the fabric form a junction area. The junction area is grid-shaped. The smallest unit of the grid is a regular rhombus, and the area of ​​the regular rhombus is 4.06mm. 2 ;

[0043] The surface treatment is carried out using a six-carbon waterproof and oil-proof agent, in which the volume ratio of deionized water to the waterproof and oil-proof agent is 50:10; the treatment method is as follows: the base fabric is immersed in the waterproof and oil-proof agent for 10 seconds, then taken out, dried at 90°C, and then placed in an oven for setting and baking at a temperature of 100°C for 75 seconds to obtain a waterproof and oil-proof treated base fabric; the surface of the base fabric forms scattered protrusions such as Figure 2 As shown, the skin framework of animals such as bionic snakes, lizards, and crocodiles is presented.

[0044] (2) Preparation of thermosetting prepolymer

[0045] (21) Inorganic powder surface treatment: Prepare a silane coupling agent treatment agent, and prepare the silane coupling agent γ-glycidyloxypropyltrimethoxysilane and deionized water in a volume ratio of 1:15 to obtain a silane coupling agent treatment agent, and set aside; weigh the inorganic powder alumina particles, add the silane coupling agent treatment agent, and stir to make them fully contact, and the stirring time is 2 minutes; put the treated inorganic powder into an oven for drying, the drying temperature is 90°C, and the drying time is 1.5 hours;

[0046] (22) Prepare the curing agent solution: add dicyandiamide powder, 2-ethyl-4-methylimidazole, and dimethylformamide into a container and heat in a water bath at 65°C while stirring until the powder is completely dissolved;

[0047] (23) Antioxidant, dispersion and wetting of inorganic powder: Add antioxidant, anti-settling dispersant and surface treated inorganic powder to the curing agent solution and stir thoroughly and evenly;

[0048] (24) Preparing a resin preform doped with inorganic powder: mechanically stirring and uniformly mixing the inorganic powder after anti-oxidation, wetting and dispersion with the thermosetting resin epoxy resin, and ultrasonically removing excess bubbles, standing at room temperature for 30 hours, and then slowly stirring to obtain a thermosetting resin preform doped with inorganic powder;

[0049] The proportions of the above raw materials are as follows: 4 parts of dicyandiamide powder, 1 part of 2-ethyl-4-methylimidazole, 10 parts of dimethylformamide, 1 part of antioxidant, 9 parts of anti-settling dispersant, and 40 parts of alumina particles as inorganic powder.

[0050] (3) Preparation of base fabric-resin composite

[0051] The protrusions of the base fabric were immersed in a thermosetting resin liquid so that the protrusions of the base fabric were covered according to the projection area requirements of the hard coating. The immersion time was 15 seconds to obtain a base fabric-resin composite.

[0052] (4) Preparation of bionic protective fabrics

[0053] The base fabric-resin composite obtained in step (3) is placed in a heat curing machine to heat cure the resin to form a bionic protective fabric covered with a hard coating. The curing temperature is 100°C. The hard coating is distributed as follows Figure 3 and Figure 4 shown.

[0054] Example 2

[0055] The bionic protective fabric of this embodiment is prepared by the following steps:

[0056] (1) Prepare the base fabric and perform waterproof and oil-proof treatment

[0057] 140D14f nylon 66 with an elastic elongation of 15% is selected as the small elastic yarn, and 140D PTT / PET parallel composite fiber with an elastic elongation of 90% is selected as the large elastic yarn. Figure 5 The base fabric is woven by weaving a double-layer structure;

[0058] The number of warp yarns in the weft yarn cycle of the double-layer structure is 32, and the number of weft yarns in the weft yarn cycle is 64. The structure of the surface layer and the inner layer is plain weave. The surface warp and surface weft of the surface layer are small elastic yarns, and the inner warp and inner weft of the inner layer are large elastic yarns. The arrangement ratio of the surface warp to the inner warp is 1:1, and the arrangement ratio of the surface weft to the inner weft is 1:1. The surface layer and the inner layer are connected by a junction point, and the junction point is formed by lifting the inner warp and interweaving with the surface weft. Multiple junction points on the fabric form a junction area, and the junction area is grid-shaped. The smallest unit of the grid is a regular hexagon, and the area of ​​the regular hexagon is 5.63mm 2 ;

[0059] The surface treatment is performed using a hexacarbon waterproof and oil-proof agent, wherein the volume ratio of deionized water to the waterproof and oil-proof agent is 50:10. The treatment method is as follows: the base fabric is immersed in the waterproof and oil-proof agent for 10 seconds, then removed, dried at 90°C, and then placed in an oven for setting and baking at 100°C for 75 seconds to obtain a waterproof and oil-proof treated base fabric.

[0060] (2) Preparation of thermosetting prepolymer

[0061] (21) Surface treatment of inorganic powder: prepare a silane coupling agent treatment agent, and prepare the silane coupling agent γ-glycidyloxypropyltrimethoxysilane and deionized water in a ratio of 1:15 to obtain a silane coupling agent treatment agent, and set aside for use; weigh the inorganic powder, add the silane coupling agent treatment agent, and stir to ensure full contact, and the stirring time is 2 minutes; put the treated inorganic powder into an oven for drying, the drying temperature is 90°C, and the drying time is 1.5 hours;

[0062] (22) Prepare the curing agent solution: add dicyandiamide powder, 2-ethyl-4-methylimidazole, and dimethylformamide into a container and heat in a water bath at 65°C while stirring until the powder is completely dissolved;

[0063] (23) Antioxidation, dispersion and wetting of inorganic powder: Add antioxidant, anti-settling dispersant and surface treated inorganic powder to the curing agent solution and stir thoroughly and evenly.

[0064] (24) Preparing a resin preform doped with inorganic powder: mechanically stirring and uniformly mixing the inorganic powder after anti-oxidation, wetting and dispersion with the thermosetting resin epoxy resin, and ultrasonically removing excess bubbles, standing at room temperature for 30 hours, and then slowly stirring to obtain a thermosetting resin preform doped with inorganic powder;

[0065] The proportions of the above raw materials are as follows: 4 parts of dicyandiamide powder, 1 part of 2-ethyl-4-methylimidazole, 10 parts of dimethylformamide, 1 part of antioxidant, 9 parts of anti-settling dispersant, and 40 parts of alumina particles as inorganic powder.

[0066] (3) Preparation of base fabric-resin composite

[0067] The protrusions of the base fabric were immersed in a thermosetting resin liquid so that the protrusions of the base fabric were covered according to the projected area of ​​the hard coating. The immersion time was 15 seconds, and a base fabric-resin composite was obtained.

[0068] (4) Preparation of bionic protective fabrics

[0069] The base fabric-resin composite obtained in step (3) is placed in a heat curing machine to heat cure the resin to form a bionic protective fabric covered with a hard coating, and the curing temperature is 100°C.

[0070] Example 3

[0071] This embodiment is the same as embodiment 1, except that 15% of 70D nylon 66 is used as the small elastic yarn, and 70D PTT / PET parallel composite fiber with an elastic elongation of 70% is used as the large elastic yarn.

[0072] Comparative Example 1

[0073] The same as Example 1, except that the small elastic yarn is a 60D circular cross-section polyurethane filament with an elastic elongation of 25%; the large elastic yarn is a 60D circular cross-section polyurethane filament with an elastic elongation of 65%.

[0074] Comparative Example 2

[0075] The same as Example 1, except that the small elastic yarn is 90s cotton yarn with an elastic elongation of 6%; the large elastic yarn is 50D circular cross-section polyurethane filament with an elastic elongation of 90%.

[0076] Comparative Example 3

[0077] The same as Example 1, except that step (4) uses light curing.

[0078] Comparative Example 4

[0079] The method is the same as Example 1, except that the raw material of the hard coating is epoxy resin without any inorganic powder.

[0080] The parameters of the protrusions and hard coatings of Examples 1 to 3 are shown in Table 1, the parameters of the protrusions and hard coatings of Comparative Examples 1 to 4 are shown in Table 2, and the comprehensive performance results of Examples 1 to 3 and Comparative Examples 1 to 4 are shown in Table 3.

[0081] Table 1 Parameters of protrusions and hard coatings of Examples 1 to 3

[0082]

[0083] Table 2 Parameters of protrusions and hard coatings of Comparative Examples 1 to 4

[0084]

[0085] Table 3 Comprehensive performance results of Examples 1 to 3 and Comparative Examples 1 to 4

[0086]

[0087] As can be seen from Tables 1 to 3, the bionic protective fabrics of Examples 1-3 can achieve bionic skin of animals such as snakes, lizards, and crocodiles, with air permeability of not less than 50 mm / s, wear resistance of not less than 10,000 revolutions, wrinkle resistance of not less than level 3, softness (bending length) of not more than 40 mm, and cut resistance of the bionic fabric of not less than level A3. The comprehensive performance meets the requirements of protective fabrics.

[0088] In Comparative Example 1, the difference in elastic elongation between the small elastic yarn and the large elastic yarn is 40%, the height of the protrusion is too low, the projected area of ​​the protrusion accounts for a small proportion of the base fabric, the surface area of ​​the protrusion is too small, the hard coating is applied, and the wear resistance and cut resistance are poor; the hard coating has low restraint on the yarn, the yarn is relatively free, and the yarn is easily deformed after being subjected to force, resulting in poor wrinkle resistance.

[0089] In Comparative Example 2, the difference in elastic elongation between the small elastic yarn and the large elastic yarn is close to 90%, the height of the formed protrusions is too high, the projected area of ​​the protrusions accounts for too much of the base fabric, and the surface area of ​​the protrusions is too large, resulting in the coating thickness being too high. Considering softness, the coating proportion is reduced to 75%, and the hard coating does not adequately cover the protrusions, affecting wear resistance and cut resistance; the hard coating has a high degree of restraint on the yarn, the yarn is relatively constrained, and it is difficult for the yarn to return to its original state after being subjected to force, resulting in poor wrinkle resistance.

[0090] In Comparative Example 3, light curing resulted in a higher hardness of the hard coating layer, a slow light curing speed, and the liquid resin easily diffused into the bonding area, resulting in poor air permeability and softness.

[0091] In Comparative Example 4, the coating hardness is 12HD, resulting in poor wear resistance, wrinkle resistance, and cut resistance.

[0092] The test methods for various performance parameters in the present invention are as follows:

[0093] (1) Breathability

[0094] Tested according to GB / T5453-1997 standard.

[0095] (2) Wear resistance

[0096] Tested according to GB / T 21196-2007 standard.

[0097] (3) Anti-wrinkle

[0098] According to the washing method specified in GB / T 13769-2009, the appearance of the non-coated surface was evaluated after washing three times.

[0099] (4) Softness

[0100] Tested according to GB / T 18318.1-2009 standard.

[0101] (5) Cut resistance

[0102] Tested according to ANSI / ISEA 105-2016 standards.

Claims

1. A bionic protective fabric, characterized in that: The bionic protective fabric includes a base fabric, which consists of a joining area and an inner and outer layered area. The joining area is distributed in a grid shape, and the inner and outer layered area is dispersed in blocks. The inner and outer layered area consists of a surface layer and an inner layer. The warp and weft yarns of the surface layer are small elastic yarns, and the warp and weft yarns of the inner layer are large elastic yarns. The elastic elongation of the large elastic yarn is greater than the elastic elongation of the small elastic yarn. The inner layer contracts and the surface layer arches outward to form a bulge, and the surface of the bulge is provided with a hard coating.

2. The bionic protective fabric according to claim 1, characterized in that: The elastic elongation of the small elastic yarn is not more than 30%, the elastic elongation of the large elastic yarn is not less than 30%, and the difference between the elastic elongation of the small elastic yarn and the large elastic yarn is 55% to 75%.

3. The bionic protective fabric according to claim 1, characterized in that: The smallest unit of the grid is a regular rhombus or a regular hexagon.

4. The bionic protective fabric according to claim 1, characterized in that: The area of ​​the smallest unit of the grid is not less than 3mm 2 .

5. The bionic protective fabric according to claim 1, characterized in that: The projection area of ​​the protrusion is 60% to 75% of the area of ​​the smallest unit of the grid; the projection area of ​​the hard coating is 90% to 100% of the projection area of ​​the protrusion; and the thickness of the hard coating is not less than 0.5 mm.

6. The bionic protective fabric according to claim 1, characterized in that: The hardness of the hard coating is not less than 30HD.

7. The bionic protective fabric according to claim 1, characterized in that: The raw materials of the hard coating layer include thermosetting resin and reinforcement.

8. A method for preparing the bionic protective fabric according to any one of claims 1 to 7, characterized in that: The steps include: (1) Using small elastic yarn as the warp and weft yarn of the surface layer and large elastic yarn as the warp and weft yarn of the inner layer to weave a base fabric, and then performing a waterproof and oil-proof treatment on the base fabric; (2) preparing a thermosetting prepolymer; (3) immersing the protrusions of the base fabric after the waterproof and oil-proof treatment obtained in step (1) into the thermosetting prepolymer prepared in step (2) so that the protrusions of the base fabric are fully covered, the immersion time is 10 to 20 seconds, and a base fabric-resin composite is obtained; (4) The base fabric-resin composite prepared in step (3) is placed in a heat curing machine to heat cure the resin at a curing temperature of 70 to 130° C., thereby forming a bionic protective fabric covered with a hard coating.

9. A textile, characterized in that The bionic protective fabric comprises the bionic protective fabric according to any one of claims 1 to 7.

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