Durable antibacterial flame-retardant micron filament composite superfine fiber fabric

Abstract

The invention relates to the technical field of fiber fabrics, and discloses a durable antibacterial flame-retardant micron filament composite superfine fiber fabric, which comprises a middle layer, an outer surface layer is arranged on the outer layer of the middle layer, an inner skin-friendly layer is arranged on the inner layer of the middle layer, and an outer surface layer is arranged on the outer layer of the middle layer. The middle layer comprises a superfine fiber fabric base layer, a first acid and alkali resistant layer, a waterproof breathable layer and a first antibacterial layer, and the superfine fiber fabric base layer, the first acid and alkali resistant layer, the waterproof breathable layer and the first antibacterial layer are sequentially connected from inside to outside. Through the scientific design of the three-layer composite structure, efficient integration of multiple functions is achieved; the multi-layer structure enables the fabric to have the multiple characteristics of antibiosis, flame retardance, acid and alkali resistance, static resistance, water resistance, breathability and the like at the same time, the protection requirement under the complex environment is met, the overall design guarantees high performance, meanwhile, through reasonable interlayer matching and technological treatment, the fabric keeps good flexibility and wearing comfort, and the fabric is suitable for being used in a large-scale production line. The device is suitable for various scenes such as industrial protection and outdoor operation.

Description

Technical Field

[0001] The invention relates to the technical field of fiber fabrics, in particular to a durable antibacterial and flame-retardant micron silk composite ultrafine fiber fabric. Background Art

[0002] In scenarios such as industrial protection and outdoor operations, the functional requirements for fabrics are becoming increasingly diversified. Not only are basic protective properties such as antibacterial, flame retardant, and acid and alkali resistant required, but additional functions such as antistatic, waterproof and breathable are also required. However, protective fabrics in existing technologies often have the problem of single function: for example, traditional flame retardant fabrics focus on improving flame retardant properties, but lack effective antibacterial and acid and alkali resistant designs; although some antibacterial fabrics can inhibit the growth of microorganisms, they perform poorly in key protection indicators such as flame retardancy and antistatic; this functional limitation leads to the need for users to stack multiple layers of fabrics with different functions to meet the needs in complex environments, which not only increases the burden of wearing, but may also affect the overall protection effect due to mutual constraints between layers. At the same time, most products of existing composite fabric interlayer connection technology use ordinary glue bonding or simple weaving composite, which are prone to delamination and wrinkling after repeated washing, seriously affecting the structural stability and functional durability of the fabric; in addition, in terms of the balance between function and comfort, existing technologies are difficult to strike a balance: for example, acid and alkali resistant fabrics often adopt a closed structure to ensure protective performance, resulting in poor air permeability and stuffiness when wearing; some wear-resistant fabrics lack the necessary flexibility due to their hard material or unreasonable structural design, which greatly reduces the comfort of close fitting; these problems make existing fabrics unable to cope with complex scenarios due to incomplete functions in actual applications, or difficult to meet long-term use needs due to unstable structure and poor comfort. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems of existing industrial protection and outdoor work fabrics having single function, easy failure of interlayer connections, and difficulty in balancing function and comfort. The present invention provides a long-lasting antibacterial and flame-retardant micron silk composite ultrafine fiber fabric.

[0004] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: A durable antibacterial and flame-retardant micron silk composite ultrafine fiber fabric, comprising an intermediate layer, the outer layer of the intermediate layer is provided with an outer surface layer, the inner layer of the intermediate layer is provided with an inner skin-friendly layer, the intermediate layer comprises an ultrafine fiber fabric base layer, a first acid and alkali resistant layer, a waterproof and breathable layer and a first antibacterial layer, the ultrafine fiber fabric base layer, the first acid and alkali resistant layer, the waterproof and breathable layer and the first antibacterial layer are sequentially connected from the inside to the outside, the first acid and alkali resistant layer comprises a fabric body and air holes, the air holes are provided on the surface of the fabric body, the first antibacterial layer comprises a nano metal oxide coating and polyester filaments, the nano metal oxide coating is provided on the surface of the polyester filaments The outer surface layer includes an antistatic layer and a wear-resistant layer, the antistatic layer and the wear-resistant layer are connected in sequence from the inside to the outside, the wear-resistant layer is the outermost layer, the wear-resistant layer includes an aramid flame retardant layer and wear-resistant protrusions, the wear-resistant protrusions are arranged on the outer layer of the aramid flame retardant layer, the inner skin-friendly layer includes a second acid and alkali proof layer, a functional layer, a second antibacterial layer and a nitrile cotton flame retardant layer, the second acid and alkali proof layer, the functional layer, the second antibacterial layer and the nitrile cotton flame retardant layer are connected in sequence from the outside to the inside, the nitrile cotton flame retardant layer is the innermost layer, the layers of the intermediate layer, between the intermediate layer and the outer surface layer, and between the intermediate layer and the inner skin-friendly layer are all connected by hot melt adhesive, and the hot melt adhesive is polyurethane hot melt adhesive.

[0005] Furthermore, the microfiber fabric base layer is blended from micron-grade ultrafine polyester fibers and nylon fibers, which not only retains the delicate texture of the microfibers, but also forms a stable support network through the three-dimensional interwoven structure between the fibers, so that the base layer can still maintain a uniform thickness when subjected to multi-layer composite pressure.

[0006] Furthermore, the fabric body of the first acid and alkali resistant layer is woven from polytetrafluoroethylene fibers, has the characteristics of being resistant to strong acids and alkalis, high and low temperatures, and can effectively resist chemical corrosion in industrial environments.

[0007] Furthermore, the waterproof and breathable layer is a polyetherester waterproof and breathable film, which can not only block the penetration of liquid water but also allow water vapor emitted by the human body to pass freely.

[0008] Furthermore, the nano metal oxide coating of the first antibacterial layer is a nano zinc oxide coating or a nano copper oxide coating, and the polyester filaments are interwoven to form a grid structure, which not only provides more exposed interfaces for the antibacterial components but also reduces the air permeability obstruction of the waterproof and breathable layer.

[0009] Furthermore, the antistatic layer is made of weft-woven conductive fibers, which are carbon fibers or metal conductive fibers, ensuring that the conductive fibers can maintain electrical connection when the fabric is stretched and deformed, thereby avoiding local areas where the antistatic performance fails.

[0010] Furthermore, the aramid flame retardant layer of the wear-resistant layer is woven with para-aramid fibers, the wear-resistant protrusions are made of polyurethane material and are hemispherical, and the wear-resistant protrusions are distributed in an equidistant matrix on the outer layer of the aramid flame retardant layer, thereby reducing the actual contact area between the fabric and the contact object and improving its wear resistance.

[0011] Furthermore, the second acid- and alkali-proof layer of the inner skin-friendly layer has the same material and structure as the first acid- and alkali-proof layer, and the interlayer bonding force is enhanced through the hydrogen bonding between fibers to avoid stratification during repeated friction.

[0012] Furthermore, the functional layer includes an anti-ultraviolet sublayer, a sweat-absorbing sublayer and an anti-mite sublayer, and is arranged in sequence from the outside to the inside, wherein the anti-ultraviolet sublayer is woven with polyester fiber containing nano-titanium dioxide; the sweat-absorbing sublayer is a pure cotton fiber layer, and the natural hollow structure of cotton fiber has excellent moisture absorption capacity; the anti-mite sublayer is made of a blend of wormwood fiber and cotton fiber, and the natural volatile oil components contained in wormwood fiber can destroy the nervous system of mites while retaining the soft touch of cotton fiber.

[0013] Furthermore, the second antibacterial layer is a nano-silver antibacterial fabric, which is woven from viscose fiber containing nano-silver particles. The moisture absorption and breathability of viscose fiber ensure that the nano-silver particles can fully contact with the microorganisms on the skin surface, while avoiding excessive release of metal ions; the acrylic-cotton flame-retardant layer is made of a blend of acrylic fiber and cotton fiber and then flame-retardant finishing. The acrylic fiber has self-extinguishing properties after phosphate flame-retardant finishing, and the cotton fiber ensures skin-friendliness.

[0014] Compared with the prior art, the present invention provides a durable antibacterial and flame-retardant micron-silk composite ultrafine fiber fabric, which has the following beneficial effects: 1. This long-lasting antibacterial and flame-retardant micron-silk composite ultrafine fiber fabric achieves efficient integration of multiple functions through the scientific design of a three-layer composite structure; the microfiber base layer in the middle layer provides stable support for the fabric, and the combination of the first acid and alkali resistant layer and the waterproof and breathable layer not only resists acid and alkali erosion but also ensures breathability and moisture removal. The first antibacterial layer forms a long-lasting antibacterial barrier through the nano-metal oxide coating; the anti-static layer and the wear-resistant layer in the outer layer work synergistically to release static charges to avoid safety hazards, and the aramid flame retardant layer and wear-resistant bumps enhance the flame retardant performance and wear life; the second acid and alkali resistant layer of the inner skin-friendly layer and the middle layer form two-way protection, the functional layer's UV protection, sweat absorption, and anti-mite layer enhance next-to-skin comfort, and the second antibacterial layer and the nitrile cotton flame retardant layer further enhance the antibacterial and flame retardant effects; this multi-layer structure enables the fabric to have multiple properties such as antibacterial, flame retardant, acid and alkali resistant, anti-static, waterproof and breathable, meeting the protection needs in complex environments.

[0015] 2. This long-lasting antibacterial and flame-retardant micron-silk composite ultrafine fiber fabric uses polyurethane hot-melt adhesive for interlayer bonding to ensure that each layer is firmly connected and washable, avoiding delamination that affects performance. The material selection and structural design of each functional layer take into account both functionality and practicality. For example, the air permeability design of the first acid and alkali proof layer balances protection and breathability. The hemispherical bumps of the wear-resistant layer reduce the friction area and improve wear resistance. The blended fiber of the inner skin-friendly layer takes into account both protection and skin-friendliness. The overall design ensures high performance while maintaining good flexibility and wearing comfort through reasonable interlayer matching and process treatment. It is suitable for various scenarios such as industrial protection and outdoor work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional image showing the outer side of the overall outer structural layer of the present invention; Figure 2 A three-dimensional image showing the outer structural layer of the present invention as a whole, close to the inner layer; Figure 3 A three-dimensional exploded view of the overall outer structural layer of the present invention is shown; Figure 4 A three-dimensional exploded view of the structure of the intermediate layer and the wear-resistant layer of the present invention is shown; Figure 5 A three-dimensional exploded view of the skin-friendly layer structure of the present invention is shown; Figure 6 A three-dimensional diagram showing the waterproof and breathable layer structure of the present invention; Figure 7 A three-dimensional diagram showing the structure of the first antibacterial layer of the present invention; Figure 8 A three-dimensional diagram showing the detailed structure of the first acid- and alkali-proof layer of the present invention; Figure 9 A three-dimensional diagram of the functional layer structure of the present invention is shown.

[0017] In the figure: 1. Middle layer; 11. Microfiber fabric base layer; 12. First acid and alkali proof layer; 121. Fabric body; 122. Breathable holes; 13. Waterproof and breathable layer; 14. First antibacterial layer; 141. Nano-metal oxide coating; 142. Polyester filament; 2. Outer layer; 21. Antistatic layer; 22. Wear-resistant layer; 221. Aramid flame retardant layer; 222. Wear-resistant bumps; 3. Inner skin-friendly layer; 31. Second acid and alkali proof layer; 32. Functional layer; 33. Second antibacterial layer; 34. Nitrile cotton flame retardant layer. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1:

[0019] like Figures 1-4 and Figure 6-Figure 8 As shown, a durable antibacterial and flame-retardant micron silk composite ultrafine fiber fabric comprises an intermediate layer 1, wherein the intermediate layer 1 comprises an ultrafine fiber fabric base layer 11, a first acid and alkali proof layer 12, a waterproof and breathable layer 13 and a first antibacterial layer 14, forming a gradient protection structure, wherein the ultrafine fiber fabric base layer 11, the first acid and alkali proof layer 12, the waterproof and breathable layer 13 and the first antibacterial layer 14 are sequentially connected from the inside to the outside, the first acid and alkali proof layer 12 comprises a fabric body 121 and air holes 122, and the air holes 122 are arranged on the surface of the fabric body 121, forming a "fabric body + air holes" composite structure, and the fabric body 1 21 serves as a basic skeleton to provide an acid- and alkali-proof barrier, while the regularly distributed air holes 122 on the surface overcome the airtightness defects of traditional acid- and alkali-proof materials, allowing air circulation while blocking corrosive media. The first antibacterial layer 14 includes a nano-metal oxide coating 141 and polyester filaments 142. The nano-metal oxide coating 141 is provided on the surface of the polyester filaments 142, which form a supporting skeleton. The nano-metal oxide coating 141 on its surface forms a molecular-level antibacterial interface, which can destroy microbial cell membranes through physical contact, achieving long-term antibacterial effect. The microfiber fabric base layer 11 is a blend of micron-grade ultrafine polyester fibers and nylon fibers. The ultrafine polyester fibers impart excellent morphological stability and wrinkle resistance to the fabric, while the toughness and elasticity of the nylon fibers compensate for the brittleness of the polyester fibers. After the two fibers are blended, they are made into a plain weave fabric using a high-precision air-jet weaving process. This not only retains the delicate texture of the microfibers, but also forms a stable support network through the three-dimensional interwoven structure between the fibers. This allows the base layer to maintain a uniform thickness even when subjected to multiple layers of composite pressure, providing a reliable structural foundation for the overall fabric. The fabric body 121 of the first acid- and alkali-resistant layer 12 is woven from polytetrafluoroethylene fibers, which are resistant to strong acids and alkalis, high and low temperatures, and can effectively resist chemical corrosion in industrial environments. Laser micromachining technology is used to create ventilation holes 122 on the surface of the fabric body, which improves air circulation while ensuring that the acid- and alkali-resistant performance is not affected, thereby avoiding the stuffiness associated with traditional acid- and alkali-resistant fabrics. The waterproof and breathable layer 13 is a polyetherester waterproof and breathable film designed with a special island-in-the-sea fiber structure to form microporous channels. The diameter of these micropores is smaller than the smallest water droplet but larger than water vapor molecules, achieving the reverse function of "waterproof but not breathable" - it can block liquid water penetration while allowing water vapor emitted by the human body to pass freely. It is tightly bonded to the first acid and alkali resistant layer through a hot pressing composite process, and the seams are sealed using ultrasonic welding technology to ensure perfect waterproof performance. The nano-metal oxide coating 141 of the first antibacterial layer 14 is a nano-zinc oxide coating or a nano-copper oxide coating. These two metal oxides generate hydroxyl radicals through photocatalysis, which can destroy the protein structure on the bacterial cell membrane and improve the antibacterial rate against common pathogens such as Escherichia coli and Staphylococcus aureus. The nano-metal oxide coating 141 is evenly coated on the surface of the polyester filaments 142 using a padding and baking process, which ensures the effective contact area of ​​the antibacterial component without affecting the flexibility of the fiber. The polyester filaments 142 are interwoven to form a grid structure, which not only provides more exposed interfaces for the antibacterial component but also reduces the air permeability of the waterproof and breathable layer. like Figures 1-4 As shown, the outer layer of the middle layer 1 is provided with an outer layer 2, and the outer layer 2 includes an antistatic layer 21 and a wear-resistant layer 22. The antistatic layer 21 and the wear-resistant layer 22 are connected in sequence from the inside to the outside. The wear-resistant layer 22 is the outermost layer. The wear-resistant layer 22 includes an aramid flame retardant layer 221 and wear-resistant convex points 222. The wear-resistant convex points 222 are provided on the outer layer of the aramid flame retardant layer 221. The aramid flame retardant layer 221 provides basic flame retardant performance. The wear-resistant convex points 222 distributed on its surface reduce the friction area between the fabric and the outside world through point contact, greatly improving the wear life. The outer layer 2 can maintain a light and thin thickness while taking into account the triple protection of antistatic, flame retardancy and wear resistance. The antistatic layer 21 is made of weft-woven conductive fibers, which are carbon fibers or metal conductive fibers. High-strength polyester filaments are used as the warp yarns, and the conductive fibers are weft-woven. The conductive fibers are made of highly conductive carbon fibers or metal-plated fibers. The corona discharge effect between the fibers rapidly releases static charges on the surface of the fabric, stabilizing the surface resistance. The weaving process uses a special interval arrangement to ensure that the conductive fibers maintain electrical connection when the fabric is stretched and deformed, avoiding localized areas where the antistatic performance fails. The aramid flame-retardant layer 221 of the wear-resistant layer 22 is woven from para-aramid fibers, and the wear-resistant protrusions 222 are made of polyurethane and are hemispherical. The wear-resistant protrusions 222 are arranged in an equidistant matrix on the outer layer of the aramid flame-retardant layer 221. These protrusions do not melt or drip in flames, but only carbonize, effectively slowing the spread of flames. This protrusion design reduces the actual contact area between the fabric and the object being touched, thereby improving its wear resistance. Example 2:

[0020] like Figure 1-Figure 5 and Figure 9 As shown, the inner layer of the middle layer 1 is provided with an inner skin-friendly layer 3, which includes a second acid- and alkali-proof layer 31, a functional layer 32, a second antibacterial layer 33, and a nitrile-cotton flame-retardant layer 34. The second acid- and alkali-proof layer 31, the functional layer 32, the second antibacterial layer 33, and the nitrile-cotton flame-retardant layer 34 are arranged from the outside to the inside, with the nitrile-cotton flame-retardant layer 34 being the innermost layer. The nitrile-cotton flame-retardant layer 34 directly contacts the skin, ensuring safety while maximizing wearing comfort. This not only continues the protective performance of the middle layer, but also achieves a synergistic effect of skin-friendliness, antibacterial properties, and flame retardancy through the optimization of the functional sublayers. The second acid-base resistant layer 31 of the inner skin-friendly layer 3 has the same material and structure as the first acid-base resistant layer 12, forming a two-way acid-base resistant protection for the middle layer. The second acid-base resistant layer 12 is directly connected to the microfiber base layer 11 of the middle layer 1, and the interlayer bonding force is enhanced through the hydrogen bonding between the fibers, thereby preventing delamination during repeated friction. The functional layer 32 includes an ultraviolet protection sublayer, a sweat absorption sublayer, and an anti-mite sublayer, which are arranged in order from the outside to the inside. The ultraviolet protection sublayer is woven from polyester fiber containing nano-titanium dioxide; the sweat absorption sublayer is a pure cotton fiber layer. The natural hollow structure of cotton fiber has excellent moisture absorption capacity, which can quickly absorb sweat from the skin surface and transfer it to the outer layer through diffusion; the anti-mite sublayer is blended with wormwood fiber and cotton fiber. The natural volatile oil component in wormwood fiber can damage the nervous system of mites while retaining the soft touch of cotton fiber. The second antibacterial layer 33 is a nano-silver antibacterial fabric woven from viscose fibers containing nano-silver particles. The nano-silver particles bind to the sulfur groups in bacterial cell membranes, disrupting the cellular respiratory enzyme system, achieving a broad-spectrum antibacterial effect and significantly inhibiting fungi and viruses. The moisture-absorbing and breathable properties of viscose fibers ensure that the nano-silver particles can fully contact microorganisms on the skin surface while preventing excessive release of metal ions. The acrylic-cotton flame-retardant layer 34 is a blend of acrylic and cotton fibers that have been flame-retardant finished. The acrylic fibers are flame-retardant finished with phosphate esters to make them self-extinguishing, while the cotton fibers ensure skin-friendliness. The layers of the middle layer 1, the middle layer 1 and the outer layer 2, and the middle layer 1 and the inner skin-friendly layer 3 are all connected by hot melt adhesive. The hot melt adhesive is a polyurethane hot melt adhesive with excellent water washability and high and low temperature stability. The interlayer bonding is achieved by a roller pressing laminating machine. The dispensing process is used in the bonding process to form a glue point matrix on the surface of the fabric, which not only ensures the bonding strength, but also avoids the decrease in air permeability due to full coverage of the adhesive layer.

[0021] Preparation process of each layer of the durable antibacterial and flame-retardant micron silk composite ultrafine fiber fabric: Middle layer 1: Microfiber fabric base 11: Made of a blend of microfine polyester fiber and nylon fiber, it is made into a plain weave fabric through air-jet weaving technology, and has good flexibility and support; First acid and alkali proof layer 12: The fabric body 121 is woven with polytetrafluoroethylene fibers, and the surface is processed with air holes 122 by laser punching technology, which can not only block acid and alkali corrosion but also ensure breathability; Waterproof and breathable layer 13: Made of polyetherester waterproof and breathable film, connected to the first acid and alkali proof layer through hot pressing and laminating process; The first antibacterial layer 14 is made of polyester filaments 142 interwoven into a grid structure, and a nano zinc oxide coating 141 is formed on the fiber surface through a padding-baking process; Outer layer 2: Antistatic layer 21: Carbon fibers are woven into the polyester filament base fabric in the weft direction, and the surface resistance is stabilized after antistatic finishing; Wear-resistant layer 22: Aramid flame retardant layer 221 is made of para-aramid fabric; polyurethane wear-resistant bumps 222 are formed on its surface through a molding process and arranged in a matrix to improve wear resistance; Inner skin-friendly layer 3: The second acid-base protection layer 31 is made of the same material as the first acid-base protection layer 12, forming a two-way protection for the middle layer; Functional layer 32: UV protection sub-layer: woven from polyester fiber containing 5% nano titanium dioxide; Sweat-wicking sublayer: pure cotton twill; Anti-mite layer: blend of mugwort fiber and cotton fiber; Second antibacterial layer 33: Made of viscose fiber woven with nano-silver particles to improve the antibacterial rate against Escherichia coli and Staphylococcus aureus; Acrylic cotton flame retardant layer 34: Acrylic fiber and cotton fiber are blended and then treated with phosphate flame retardant finishing to improve the oxygen limiting index while maintaining the skin-friendly properties of cotton fiber; Composite process: Polyurethane hot melt adhesive is used between each layer and bonded by a roller laminating machine at 120℃ and 0.3MPa.

Claims

1. A durable antibacterial and flame-retardant micron-silk composite ultrafine fiber fabric, comprising an intermediate layer (1), characterized in that: The outer layer of the intermediate layer (1) is provided with an outer surface layer (2), and the inner layer of the intermediate layer (1) is provided with an inner skin-friendly layer (3), forming a three-layer gradient composite structure of "outer protection - middle function - inner skin-friendly"; The intermediate layer (1) comprises a microfiber fabric base layer (11), a first acid-alkali resistant layer (12), a waterproof breathable layer (13) and a first antibacterial layer (14), wherein the microfiber fabric base layer (11), the first acid-alkali resistant layer (12), the waterproof breathable layer (13) and the first antibacterial layer (14) are sequentially connected from the inside to the outside; The first acid- and alkali-resistant layer (12) comprises a fabric body (121) and ventilation holes (122), wherein the ventilation holes (122) are arranged on the surface of the fabric body (121); The first antibacterial layer (14) comprises a nano-metal oxide coating (141) and polyester filaments (142), wherein the nano-metal oxide coating (141) is disposed on the surface of the polyester filaments (142); The outer surface layer (2) comprises an antistatic layer (21) and a wear-resistant layer (22), wherein the antistatic layer (21) and the wear-resistant layer (22) are sequentially connected from the inside to the outside, and the wear-resistant layer (22) is the outermost layer; The wear-resistant layer (22) comprises an aramid flame-retardant layer (221) and wear-resistant convex points (222), wherein the wear-resistant convex points (222) are arranged on the outer layer of the aramid flame-retardant layer (221); The inner skin-friendly layer (3) includes a second acid-base resistant layer (31), a functional layer (32), a second antibacterial layer (33) and a nitrile cotton flame retardant layer (34), wherein the second acid-base resistant layer (31), the functional layer (32), the second antibacterial layer (33) and the nitrile cotton flame retardant layer (34) are arranged in sequence from the outside to the inside, and the nitrile cotton flame retardant layer (34) is the innermost layer; The various layers of the intermediate layer (1), the intermediate layer (1) and the outer layer (2), and the intermediate layer (1) and the inner skin-friendly layer (3) are all connected by hot melt adhesive, and the hot melt adhesive is a polyurethane hot melt adhesive, which achieves stable connection between the layers while retaining a breathable channel.

2. The durable antibacterial and flame-retardant micron-silk composite ultrafine fiber fabric according to claim 1, characterized in that: The microfiber fabric base layer (11) is made of a blend of micron-grade microfine polyester fibers and nylon fibers.

3. The durable antibacterial and flame-retardant micron-silk composite ultrafine fiber fabric according to claim 1, characterized in that: The fabric body (121) of the first acid- and alkali-resistant layer (12) is woven from polytetrafluoroethylene fibers.

4. The durable antibacterial and flame-retardant micron-silk composite ultrafine fiber fabric according to claim 1, characterized in that: The waterproof and breathable layer (13) is a polyetherester waterproof and breathable film.

5. The durable antibacterial and flame-retardant micron-silk composite ultrafine fiber fabric according to claim 1, characterized in that: The nano metal oxide coating (141) of the first antibacterial layer (14) is a nano zinc oxide coating or a nano copper oxide coating, and the polyester filaments (142) are interwoven to form a grid structure.

6. The durable antibacterial and flame-retardant micron-silk composite ultrafine fiber fabric according to claim 1, characterized in that: The antistatic layer (21) is made of weft-woven conductive fibers, and the conductive fibers are carbon fibers or metal conductive fibers.

7. The durable antibacterial and flame-retardant micron-silk composite ultrafine fiber fabric according to claim 1, characterized in that: The aramid flame retardant layer (221) of the wear-resistant layer (22) is woven with para-aramid fibers, the wear-resistant convex points (222) are made of polyurethane material and are hemispherical, and the wear-resistant convex points (222) are distributed in an equidistant matrix arrangement on the outer layer of the aramid flame retardant layer (221).

8. The durable antibacterial and flame-retardant micron-silk composite ultrafine fiber fabric according to claim 1, characterized in that: The second acid- and alkali-resistant layer (31) of the inner skin-friendly layer (3) is made of the same material and structure as the first acid- and alkali-resistant layer (12).

9. The durable antibacterial and flame-retardant micron-silk composite ultrafine fiber fabric according to claim 1, characterized in that: The functional layer (32) comprises an ultraviolet protection sublayer, a sweat absorption sublayer and an anti-mite sublayer, and is arranged in sequence from the outside to the inside, wherein the ultraviolet protection sublayer is woven with polyester fiber containing nano-titanium dioxide; the sweat absorption sublayer is a pure cotton fiber layer; and the anti-mite sublayer is made of a blend of wormwood fiber and cotton fiber.

10. The durable antibacterial and flame-retardant micron-silk composite ultrafine fiber fabric according to claim 1, characterized in that: The second antibacterial layer (33) is a nano-silver antibacterial fabric woven from viscose fibers containing nano-silver particles, and the acrylic-cotton flame-retardant layer (34) is made by blending acrylic fibers and cotton fibers and then undergoing flame-retardant finishing.

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