Porous high-strength composite non-woven fabric

Abstract

The utility model discloses a porous high-strength composite non-woven fabric which comprises a non-woven fabric body, the non-woven fabric body comprises a first reinforcing layer, a first functional layer, a core layer, a second functional layer and a second reinforcing layer, and the first reinforcing layer, the first functional layer, the core layer, the second functional layer and the second reinforcing layer are sequentially arranged from top to bottom. The temperature-sensitive coatings are arranged on the surfaces of the first reinforcing layer and the second reinforcing layer, the wear-resistant coatings are arranged on the surfaces of the temperature-sensitive coatings, and the air permeability and the moisture absorption of the non-woven fabric can be automatically adjusted according to changes of body temperature by arranging the temperature-sensitive coatings made of poly (N-isopropylacrylamide). Due to the intelligent response characteristic, the non-woven fabric can show the best performance under different temperature conditions. Specifically, when the environment temperature or the body temperature rises, the temperature-sensitive coating layer is subjected to phase change and is converted into a hydrophobic state from a hydrophilic state. The hydrophobicity is beneficial for discharging redundant heat and moisture, so that the air permeability and the heat dissipation effect of the non-woven fabric are improved.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric technology, specifically to a porous high-strength composite nonwoven fabric. Background Technology

[0002] Nonwoven fabric, also known as woven cloth, is a material composed of fibers arranged in a directional or random pattern. It is called "cloth" because it resembles traditional textiles in appearance and some of its properties. However, unlike traditional textiles, nonwoven fabric is not made by weaving or knitting, but rather by bonding fibers together through physical or chemical methods.

[0003] In the application of nonwoven fabrics, there is a special type: porous high-strength composite nonwoven fabric. This type of nonwoven fabric has strong water absorption capacity and a porous structure, making it very popular in many applications. Its porous structure allows it to effectively absorb and release moisture while maintaining high strength, thus exhibiting excellent performance in various environments.

[0004] However, despite the many advantages of porous high-strength composite nonwoven fabrics, they also have some limitations in use. In particular, when such nonwoven fabrics lack a temperature-sensitive coating, they cannot automatically adjust the pore size according to changes in ambient temperature. This means that properties such as air permeability and water absorption remain unchanged regardless of ambient temperature variations. This fixed performance may not meet the needs of certain specific applications, especially those requiring dynamic adjustment of performance based on environmental conditions.

[0005] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes a porous high-strength composite nonwoven fabric to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] Therefore, the specific technical solution adopted by this utility model is as follows:

[0008] A porous high-strength composite nonwoven fabric includes a nonwoven fabric body, which includes a first reinforcing layer, a first functional layer, a core layer, a second functional layer, and a second reinforcing layer. The first reinforcing layer, the first functional layer, the core layer, the second functional layer, and the second reinforcing layer are arranged sequentially from top to bottom. The surfaces of the first reinforcing layer and the second reinforcing layer are provided with a temperature-sensitive coating, and the surface of the temperature-sensitive coating is provided with a wear-resistant coating.

[0009] Furthermore, in order to enhance the tensile strength of the first reinforcing layer and the second reinforcing layer, reinforcing wires are provided on the first reinforcing layer and the second reinforcing layer, and through holes are provided on the surfaces of the first reinforcing layer, the first functional layer, the second reinforcing layer and the second functional layer.

[0010] Furthermore, the first and second reinforcing layers are made of polyester fibers.

[0011] Furthermore, the first and second functional layers are made of bamboo charcoal fiber.

[0012] Furthermore, the core layer is made of high-density polyethylene.

[0013] Furthermore, the thermosensitive coating is composed of poly(N-isopropylacrylamide).

[0014] Furthermore, the wear-resistant coating is made of polyurethane.

[0015] The beneficial effects of this utility model are as follows:

[0016] (1) By applying a temperature-sensitive coating made of poly(N-isopropylacrylamide) (PNIPAM), the nonwoven fabric can automatically adjust its breathability and moisture absorption according to changes in body temperature. This intelligent response characteristic allows the nonwoven fabric to exhibit optimal performance under different temperature conditions. Specifically, when the ambient temperature or body temperature rises, the temperature-sensitive coating undergoes a phase transition, changing from a hydrophilic state to a hydrophobic state. This transition causes water molecules on the coating surface to be repelled, making the coating more hydrophobic. This hydrophobicity helps to expel excess heat and moisture, thereby improving the breathability and heat dissipation of the nonwoven fabric. Conversely, in low-temperature environments, the temperature-sensitive coating retains its hydrophilicity, attracting and retaining water molecules. This hydrophilicity helps to keep the nonwoven fabric warm and moist, thus providing better insulation.

[0017] (2) By setting reinforcing filaments on the first and second reinforcing layers, the stability of the overall structure is further improved, and the tensile and tear resistance of the nonwoven fabric is enhanced. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front view of a porous high-strength composite nonwoven fabric according to an embodiment of the present utility model;

[0020] Figure 2 This is a structural diagram of a porous high-strength composite nonwoven fabric according to an embodiment of the present utility model;

[0021] Figure 3 This is a structural diagram of the first reinforcing layer of a porous high-strength composite nonwoven fabric according to an embodiment of the present utility model.

[0022] In the picture:

[0023] 1. Non-woven fabric body; 2. First reinforcing layer; 3. First functional layer; 4. Core layer; 5. Second functional layer; 6. Second reinforcing layer; 7. Temperature-sensitive coating; 8. Wear-resistant coating; 9. Reinforcing filaments; 10. Through holes. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] According to an embodiment of the present invention, a porous high-strength composite nonwoven fabric is provided.

[0026] Example 1

[0027] like Figure 1-Figure 3As shown, the porous high-strength composite nonwoven fabric according to an embodiment of the present invention includes a nonwoven fabric body 1. The nonwoven fabric body 1 includes a first reinforcing layer 2, a first functional layer 3, a core layer 4, a second functional layer 5, and a second reinforcing layer 6. The first reinforcing layer 2, the first functional layer 3, the core layer 4, the second functional layer 5, and the second reinforcing layer 6 are arranged sequentially from top to bottom. The first reinforcing layer 2 and the second reinforcing layer 6 are made of polyester fiber. Using polyester fiber as the first reinforcing layer 2 and the second reinforcing layer 6 can provide good mechanical strength and durability. A temperature-sensitive coating 7 is provided on the surface of the first reinforcing layer 2 and the second reinforcing layer 6. The first functional layer 3 and the second functional layer 5 are made of bamboo charcoal fiber. The core layer 4 is made of high-density polyethylene. The temperature-sensitive coating 7 is made of poly(N-isopropylacrylamide). The surface of the amine-sensitive coating 7 is provided with a wear-resistant coating 8, which is made of polyurethane. By providing the wear-resistant coating 8 to the temperature-sensitive coating 7, the wear resistance of the nonwoven fabric is enhanced, and the temperature-sensitive material is less susceptible to external mechanical wear or chemical corrosion, thus maintaining its effectiveness for a longer period of time. The first reinforcing layer 2 and the second reinforcing layer 6 are provided with reinforcing filaments 9. By providing the reinforcing filaments 9, the stability of the overall structure can be further improved, and the tensile and tear resistance of the nonwoven fabric can be enhanced. The surfaces of the first reinforcing layer 2, the first functional layer 3, the second reinforcing layer 6, and the second functional layer 5 are provided with through holes 10. The through holes 10 are trapezoidal in shape. The trapezoidal holes can provide a more efficient airflow path, help to disperse pressure, reduce local stress concentration, and thus extend the service life of the nonwoven fabric. The above scheme uses poly(N-isopropylacrylamide) (PNIPAM) as the temperature-sensitive coating material 7, giving the nonwoven fabric temperature-responsive characteristics. Furthermore, by setting the first reinforcing layer 2 and the second reinforcing layer 6, good mechanical strength and durability are provided. By setting bamboo charcoal fiber as the first functional layer 3 and the second functional layer 5, good moisture absorption and breathability, as well as natural antibacterial properties, are provided, helping to improve wearing comfort and reduce bacterial growth. Finally, by using high-density polyethylene as the core layer material 4, the rigidity and certain waterproof performance of the nonwoven fabric are ensured, while maintaining its lightweight characteristics. This composite nonwoven fabric, by combining materials with different properties, can meet the needs of various application scenarios.

[0028] In summary, by utilizing the above-described technical solution of this invention, and by setting a temperature-sensitive coating 7 made of poly(N-isopropylacrylamide) (PNIPAM), the nonwoven fabric can automatically adjust its breathability and moisture absorption according to changes in body temperature. This intelligent response characteristic allows the nonwoven fabric to exhibit optimal performance under different temperature conditions. Specifically, when the ambient temperature or body temperature rises, the temperature-sensitive coating 7 undergoes a phase transition, changing from a hydrophilic state to a hydrophobic state. This transition causes water molecules on the coating surface to be repelled, making the coating more hydrophobic. This hydrophobicity helps to expel excess heat and moisture, thereby improving the breathability and heat dissipation of the nonwoven fabric. Conversely, in low-temperature environments, the temperature-sensitive coating 7 retains its hydrophilicity, attracting and retaining water molecules. This hydrophilicity helps to keep the nonwoven fabric warm and moist, thus providing better insulation.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A porous high-strength composite nonwoven fabric, characterized in that, The nonwoven fabric body (1) includes a first reinforcing layer (2), a first functional layer (3), a core layer (4), a second functional layer (5), and a second reinforcing layer (6). The first reinforcing layer (2), the first functional layer (3), the core layer (4), the second functional layer (5), and the second reinforcing layer (6) are arranged sequentially from top to bottom. The surface of the first reinforcing layer (2) and the second reinforcing layer (6) is provided with a temperature-sensitive coating (7), and the surface of the temperature-sensitive coating (7) is provided with a wear-resistant coating (8).

2. The porous high-strength composite nonwoven fabric according to claim 1, characterized in that, The first reinforcing layer (2) and the second reinforcing layer (6) are provided with reinforcing wires (9), and the surfaces of the first reinforcing layer (2), the first functional layer (3), the second reinforcing layer (6) and the second functional layer (5) are provided with through holes (10).

3. The porous high-strength composite nonwoven fabric according to claim 1, characterized in that, The first reinforcing layer (2) and the second reinforcing layer (6) are made of polyester fiber.

4. The porous high-strength composite nonwoven fabric according to claim 1, characterized in that, The first functional layer (3) and the second functional layer (5) are made of bamboo charcoal fiber.

5. The porous high-strength composite nonwoven fabric according to claim 1, characterized in that, The core layer (4) is made of high-density polyethylene.

6. The porous high-strength composite nonwoven fabric according to claim 1, characterized in that, The thermosensitive coating (7) is composed of poly(N-isopropylacrylamide).

7. The porous high-strength composite nonwoven fabric according to claim 1, characterized in that, The wear-resistant coating (8) is made of polyurethane.

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