Phase change microcapsule fabric for perspiration and cooling protective clothing and operation method

Abstract

The invention relates to the field of cooling of human body protective clothing, in particular to a cooling fabric based on phase change microcapsules. The cooling fabric comprises a polyester fiber layer, a phase change microcapsule layer and a PTFE waterproof breathable film layer. The polyester fiber layer is made of skin-friendly polyester fibers, has excellent moisture absorption and sweat releasing performance and can improve wearing comfort. The phase-change microcapsule layer is formed by uniformly embedding microcapsules coated with a phase-change material into the textile structure, and absorbs heat and generates phase change when the environment temperature rises, so that the temperature of the fabric is reduced; the PTFE waterproof breathable film layer has waterproof and breathable functions, can prevent external liquid from permeating, allows water vapor to permeate, and enhances environmental adaptability. By optimizing the spinning method of the phase-change microcapsules, the phase-change heat exchange efficiency can be improved while the air permeability of the fabric is kept, and the cooling performance of the fabric at high temperature is ensured. The fabric can be widely applied to high-temperature work clothes, outdoor sportswear and intelligent temperature control textiles, and has the advantages of being high in temperature adjusting capacity, comfortable, breathable and the like.

Description

Technical Field

[0001] The present invention relates to a phase change microcapsule fabric for sweat - discharging and cooling protective clothing, belonging to the field of human protective clothing cooling. Background Art

[0002] Clothes worn in high - temperature, strenuous exercise or extreme environments should not only have good breathability and sweat - discharging performance, but also have a certain temperature control and adjustment ability to improve the wearing comfort and protection effect. Traditional cooling clothing mainly relies on moisture - absorbing and sweat - wicking materials, ventilation design or cooling devices. However, these methods have certain limitations. For example, moisture - absorbing and quick - drying fabrics can only achieve cooling through water evaporation, and the cooling effect is greatly affected by environmental humidity. Active cooling devices (such as fans, water - cooling systems) have problems such as large weight and high energy consumption. Therefore, how to improve its intelligent temperature control function while maintaining the lightweight and softness of the fabric has become one of the key research directions for current protective clothing fabrics.

[0003] Currently, some patents and technologies have been applied to the field of intelligent temperature - controlled clothing. For example, Patent CN112982748A, "An intelligent temperature - controlled textile and its preparation method", uses intelligent temperature - regulating fibers to adjust the temperature through moisture - absorption heat - release or evaporation heat - absorption. However, this technology is only applicable to mild environmental temperature difference adjustment and is difficult to achieve long - term effective temperature control. Patent CN109573214A, "Adaptive temperature - controlled fabric based on phase - change materials", uses the heat - absorption and heat - release characteristics of phase - change materials for temperature adjustment. However, the microcapsule encapsulation material used in CN109573214A is relatively thin and the structure is not stable enough. When the fabric is subjected to repeated friction, stretching or washing, the microcapsules are prone to rupture, resulting in the leakage of phase - change materials and affecting durability. Patent CN108729632A, "A phase - change energy - storage fiber and its preparation method", realizes temperature control through internal energy - storage microcapsules in the fiber, that is, encapsulating phase - change microcapsules inside the fiber. This encapsulation method makes the phase - change material completely embedded in the fiber, reducing the gaps between fibers, making it difficult for moisture and heat to be quickly discharged, causing local accumulation, reducing the breathability of the fabric, and affecting the actual application effect of the fabric. In addition, some cooling fabrics on the market mainly use single - layer phase - change materials or coating technologies, which may have problems such as low utilization rate of phase - change materials and decreased breathability of the fabric, and cannot meet the requirements of long - term efficient cooling and comfort.

[0004] In view of the above situation, the present invention provides a phase change microcapsule fabric for sweat-absorbing and cooling protective clothing. Through a multi-layer composite structure design, the phase change microcapsules are evenly distributed in the middle layer. At the same time, by combining the moisture absorption and sweat discharge function of the polyester fiber layer and the waterproof and breathable characteristics of the PTFE film layer, a temperature control regulation with rapid response is achieved, enhancing the cooling effect and wearing comfort. This fabric can not only absorb excess heat in a high-temperature environment and reduce the skin surface temperature, but also release the stored heat when the temperature drops, providing a continuous temperature regulation function. In addition, this fabric has excellent breathability, waterproofness and washability, and is suitable for various application scenarios such as sportswear, outdoor protective clothing and high-temperature work clothing. Summary of the Invention

[0005] The purpose of the present invention is to design a phase change microcapsule fabric for sweat-absorbing and cooling protective clothing, which helps to promote the combination and application of phase change material technology and cooling protective clothing.

[0006] An embodiment of the present application provides a phase change microcapsule fabric for sweat-absorbing and cooling protective clothing, which is composed of three parts: a polyester fiber layer, a phase change microcapsule layer and a PTFE waterproof and breathable film layer:

[0007] Among them, the polyester fiber layer 1 is composed of a skin-friendly layer 1-1, a breathable microchannel layer 1-2, an internal moisture transmission layer 1-3, a fiber structure layer 1-4, and an outer surface layer 1-5 from bottom to top in sequence; the phase change microcapsule layer 2 is composed of an adhesive layer 2-1, a porous breathable textile matrix layer 2-2, a phase change material layer 2-3, and a shell protection layer 2-4 from bottom to top in sequence; the PTFE waterproof and breathable film layer 3 is composed of an adhesive layer 3-1, a strengthening layer 3-2, a microporous PTFE layer 3-3, and a protective coating 3-4 from bottom to top in sequence.

[0008] The antibacterial skin-friendly layer 1-1 in the polyester fiber layer 1 is woven from modal fiber added with nano silver; a breathable microchannel layer 1-2 is provided on the surface of the skin-friendly layer 1-1, and the breathable microchannel layer 1-2 is made of polytetrafluoroethylene (PTFE) film; an internal moisture transmission layer 1-3 is provided on the surface of the breathable microchannel layer 1-2, and the internal moisture transmission layer 1-3 is woven from polyethylene terephthalate (PET) fiber and nylon fiber; a fiber structure layer 1-4 is provided on the surface of the internal moisture transmission layer 1-3, and the fiber structure layer 1-4 is woven from profiled polyethylene terephthalate (PET) fiber; an outer surface layer 1-5 is provided on the fiber structure layer 1-4, and the outer surface layer 1-5 is woven from polyester fiber.

[0009] The adhesive layer 2-1 in the phase change microcapsule layer 2 is made of polyurethane adhesive; a porous breathable textile matrix layer 2-2 is provided on the surface of the adhesive layer 2-1, and the porous breathable textile matrix layer 2-2 is woven and formed by warp-knitted mesh nylon fabric; a phase change material layer 2-3 is provided on the surface of the porous breathable textile matrix layer 2-2, and the phase change material layer 2-3 is formed by uniformly distributing paraffin phase change microcapsules; a shell protection layer 2-4 is provided on the surface of the phase change material layer 2-3, and the shell protection layer 2-4 is made by depositing and coating silica particles.

[0010] The adhesive layer 3-1 in the PTFE waterproof and breathable membrane layer 3 is made of silicone; a reinforcing layer 3-2 is provided on the surface of the adhesive layer 3-1, and the reinforcing layer 3-2 is woven and formed by polyester mesh cloth; a microporous PTFE layer 3-3 is provided on the surface of the reinforcing layer 3-2, and the microporous PTFE layer 3-3 is made of microporous structure PTFE; a protective coating 3-4 is provided on the surface of the microporous PTFE layer 3-3, and the protective coating 3-4 is made of ultra-thin PTFE.

[0011] In the phase change microcapsule fabric, the connection between the polyester fiber layer 1 and the phase change microcapsule layer 2 adopts a high molecular hot melt bonding process; the connection between the phase change microcapsule layer 2 and the PTFE waterproof and breathable membrane layer 3 is coated with a high molecular silicone resin as an adhesive and bonded by a dot coating bonding process.

[0012] In the polyester fiber layer 1, the connection between the antibacterial skin-friendly layer 1-1 and the breathable microchannel layer 1-2 adopts a combination of physical interlayer adhesion and dot hot pressing bonding; the connection between the breathable microchannel layer 1-2 and the internal moisture transmission layer 1-3 uses a low-viscosity polyurethane resin as an adhesive and is bonded by a micro glue dot coating; the connection between the internal moisture transmission layer 1-3 and the fiber structure layer 1-4 adopts a high-temperature hot melt composite process; the connection between the fiber structure layer 1-4 and the outer surface 1-5 adopts an ultrasonic composite pressing process.

[0013] In the phase change microcapsule layer 2, the connection between the adhesive layer 2-1 and the porous breathable textile matrix layer 2-2 is bonded by a polyurethane adhesive coating; the connection between the porous breathable textile matrix layer 2-2 and the phase change material layer 2-3 adopts a microcapsule embedding and fixing technology; the connection between the phase change material layer 2-3 and the shell protection layer 2-4 adopts a silica particle deposition and coating process.

[0014] In the PTFE waterproof and breathable membrane layer 3, the connection between the adhesive layer 3-1 and the reinforcing layer 3-2 uses an organic silicone coating as an adhesive and is bonded by a low-temperature curing process; the connection between the reinforcing layer 3-2 and the microporous PTFE layer 3-3 adopts a hot melt lamination composite process; the connection between the microporous PTFE layer 3-3 and the protective coating 3-4 adopts an ultra-thin PTFE sol spraying process. Description of the Drawings

[0015] Appendix Figure 1This is the overall structure diagram of the phase change microcapsule fabric;

[0016] Attached Figure 1 The reference numbers in the figure are as follows: 1. Polyester fiber layer, 1-1. Skin-friendly layer, 1-2. Breathable microchannel layer, 1-3. Internal moisture transmission layer, 1-4. Fiber structure layer, 1-5. Outer surface, 2. Phase change microcapsule layer, 2-1. Adhesive layer, 2-2. Porous breathable textile matrix layer, 2-3. Phase change material layer, 2-4. Outer shell protective layer, 3. PTFE waterproof and breathable membrane layer, 3-1. Adhesive layer, 3-2. Reinforcement layer, 3-3. Microporous PTFE layer, 3-4. Protective coating.

[0017] Attached Figure 2 is a structural diagram of the polyester fiber layer 1;

[0018] Attached Figure 2 The label names in the figure are as follows: 1-1. Skin-friendly layer, 1-2. Breathable microchannel layer, 1-3. Internal moisture transmission layer, 1-4. Fiber structure layer, 1-5. Outer surface.

[0019] Attached Figure 3 is a structural diagram of the phase change microcapsule layer 2;

[0020] Attached Figure 3 The reference numerals in the description are as follows: 2-1. Adhesive layer, 2-2. Porous breathable textile base layer, 2-3. Phase change material layer, 2-4. Outer shell protective layer.

[0021] Attached Figure 4 It is a structural diagram of the PTFE waterproof and breathable membrane layer 3;

[0022] Attached Figure 4 The reference numerals in the figure are as follows: 3-1. Adhesive layer, 3-2. Reinforcement layer, 3-3. Microporous PTFE layer, 3-4. Protective coating layer. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] As attached Figure 1 As shown, the phase change microcapsule fabric includes: a polyester fiber layer 1, a phase change microcapsule layer 2, and a polytetrafluoroethylene (PTFE) membrane layer 3.

[0025] As attached Figure 2 As shown, the polyester fiber layer 1 includes: a skin-friendly layer 1-1, a breathable microchannel layer 1-2, an internal moisture transmission layer 1-3, a fiber structure layer 1-4, and an outer surface layer 1-5.

[0026] When using the protective clothing, when sweat contacts the surface of the fabric, the antibacterial and skin-friendly layer 1-1 immediately absorbs the sweat. At this time, the modal fiber structure in the antibacterial and skin-friendly layer 1-1 absorbs moisture and swells, the humidity on the fiber surface increases, and the local heat capacity increases, thereby reducing the instantaneous temperature of the skin; the sweat diffuses along the fiber direction and is quickly transmitted to the next breathable microchannel layer 1-2 to keep the skin-friendly layer relatively dry and avoid a sticky feeling; the breathable microchannel layer 1-2 transfers the moisture absorbed by the antibacterial and skin-friendly layer 1-1 to the upper layer through the microporous structure to ensure that moisture does not accumulate inside the modal fiber, further improving the sweating rate; the internal moisture transmission layer 1-3 disperses the moisture transmitted by the breathable microchannel layer 1-2 to the fiber structure layer 1-4. At this time, the moisture temporarily stays in the breathable microchannel layer 1-2 to form a micron-scale water film, temporarily storing part of the moisture to prevent the moisture from instantly accumulating in the internal moisture transmission layer 1-3 and affecting the overall sweating efficiency; at the same time, due to the strong moisture conduction ability of the internal moisture transmission layer 1-3, the internal moisture transmission layer 1-3 has a lower humidity than the breathable microchannel layer 1-2; this humidity gradient causes a pressure difference to form in the microporous structure of the breathable microchannel layer 1-2, pushing the water vapor to diffuse towards the moisture transmission layer 1-3, thereby accelerating the moisture transmission; when the fiber structure layer 1-4 absorbs moisture and swells, the gap between the profiled polyester fiber PET and the nylon fiber temporarily increases, which helps to improve the diffusion speed and breathability of the moisture; after the profiled polyester fiber PET and the nylon fiber absorb moisture, the surface hydrophilicity of the fiber structure layer 1-4 is enhanced, and a thin water film may be formed, which helps the moisture to flow outwards and further improves the conduction effect of the moisture in the fabric; during the final sweating process, the sweat finally enters the outer surface 1-5. The outer surface 1-5 contacts the air through tiny fiber gaps, helping the water vapor to evaporate into the external air and keeping the fabric dry; at this time, no moisture accumulates on the fabric surface, making the wearer feel comfortable and refreshed.

[0027] When the use of the protective clothing ends, the polyester fibers in the polyester fiber layer 1 have strong moisture absorption and store a lot of water. After the heat is released, the water in the fibers will be released through evaporation; as the temperature changes, the water gradually escapes from the inside of the polyester fibers, keeping the polyester fiber layer 1 dry; the microscopic structure on the surface of the polyester fibers can take away the water through natural air circulation; the polyester fibers will return to their original shape at high temperatures, ensuring the comfort and stability of the fabric; the polyester fiber layer 1 will not be structurally damaged due to temperature changes, and the restored fibers can continue to perform the functions of moisture absorption and breathability.

[0028] As shown in the Figure 3 appendix, the phase change microcapsule layer 2 includes: an adhesive layer 2-1, a porous breathable textile matrix layer 2-2, a phase change material layer 2-3, and a shell protection layer 2-4.

[0029] When using the protective clothing, sweat does not directly contact the adhesive layer 2-1. The main function of the adhesive layer is to firmly bond the various sub-layers of the phase change microcapsule layer 2 together to ensure the structural stability, enabling the phase change microcapsule layer to completely transfer moisture and heat; sweat is transferred to the porous breathable textile matrix layer 2-2 in the form of water vapor; this layer is woven from warp-knitted mesh nylon fabric and has good breathability and support. The water vapor diffuses and is transferred to the phase change material layer 2-3 through the capillary action of the matrix layer; when the sweat reaches the phase change material layer, the phase change material (such as paraffin) in the microcapsules begins to absorb heat and melt. In this process, the phase change material absorbs and stores heat from the surrounding environment (including sweat), achieving the effect of reducing the skin temperature; at the same time, the sweat transfers moisture to the phase change material layer in the form of water vapor through evaporation, and this layer will convert the water vapor into liquid, thereby storing energy and achieving cooling; the evaporation of sweat and the melting process of the phase change material occur simultaneously in the phase change material layer, increasing the cooling effect of the fabric; the outer shell protection layer 2-4 is formed by the deposition of silica particles to protect the phase change material from the influence of the external environment; during the phase change process, sweat enters the outer shell protection layer through the microcapsules of the phase change material, but the main function of the outer shell is to ensure the stability of the phase change material and prevent its leakage.

[0030] When the use of the protective clothing ends, as the temperature in the phase change microcapsule layer 2 gradually decreases, the phase change material (such as paraffin) in the phase change microcapsule layer 2 begins to release the stored heat; since the freezing point of the phase change material is set according to the material's characteristics, when the temperature is lower than this point, the phase change material gradually solidifies from the liquid state to the solid state and releases the previously stored heat to help maintain the body temperature stability of the wearer.

[0031] As shown in the Figure 4 attachment, the PTFE waterproof and breathable film layer 3 includes: an adhesive layer 3-1, a reinforcing layer 3-2, a microporous PTFE layer 3-3, and a protective coating 3-4.

[0032] When using the protective clothing, the adhesive layer 3-1 is made of silicone rubber and has good flexibility, enabling the film layer to maintain flexibility and durability during movement. The adhesive layer 3-1 is mainly used to firmly bond the reinforcing layer 3-2, the microporous PTFE layer 3-3, and the protective coating 3-4 together, ensuring the stability of the structure and avoiding delamination between layers during the use of the fabric. The reinforcing layer 3-2 is made of polyester mesh material, and its main function is to provide mechanical strength to prevent the PTFE film from being damaged by external forces such as stretching and friction. By providing additional support, the reinforcing layer 3-2 allows moisture to evenly pass through the microporous PTFE layer 3-3, ensuring the discharge of internal sweat and preventing the intrusion of external moisture. The microporous PTFE layer 3-3 and the protective coating 3-4 block the entry of moisture through the PTFE characteristics while allowing internal water vapor to pass through, effectively preventing the intrusion of external liquids from affecting the cooling performance of the phase change microcapsule layer 2 and accelerating the discharge of sweat to keep the body dry.

[0033] When the use of the protective clothing ends, in the polytetrafluoroethylene (PTFE) film layer 3, the PTFE film has a self-cleaning function, and its surface will naturally drain water through the superhydrophobic effect after contact with water. Even after experiencing a large amount of sweat or rain contact, the micropores of the PTFE film layer can still effectively discharge water vapor and restore its breathable function. The micropores of the PTFE film will rearrange and restore their pore diameters after contact with water, ensuring smooth sweat gas discharge while blocking the penetration of external liquids.

Claims

1. A phase change microcapsule fabric for perspiration and cooling protective clothing, characterized in that: The invention comprises a polyester fiber layer (1), a phase change microcapsule layer (2), and a polytetrafluoroethylene (PTFE) membrane layer (3), wherein the upper surface of the polyester fiber layer (1) is provided with a phase change microcapsule layer (2) and a polytetrafluoroethylene (PTFE) membrane layer (3) in order from bottom to top; the polyester fiber layer (1) is composed of an antibacterial skin-friendly layer (1-1), a moisture transmission layer (1-3) inside a breathable microchannel layer (1-2), a fiber structure layer (1-4), and an outer surface (1-5) in order from bottom to top; the phase change microcapsule layer (2) is composed of an adhesive layer (2-1), a porous breathable textile base layer (2-2), a phase change material layer (2-3), and an outer shell protective layer (2-4) in order from bottom to top; and the PTFE waterproof breathable membrane layer (3) is composed of an adhesive layer (3-1), a reinforcement layer (3-2), a microporous PTFE layer (3-3), and a protective coating (3-4) in order from bottom to top.

2. The phase change microcapsule fabric for perspiration and cooling protective clothing according to claim 1, characterized in that: The antibacterial skin-friendly layer (1-1) in the polyester fiber layer (1) is woven from modai fibers added with nanosilver; a breathable microchannel layer (1-2) is provided on the surface of the skin-friendly layer (1-1), and the breathable microchannel layer (1-2) is made of a polytetrafluoroethylene (PTFE) membrane; an internal moisture transmission layer (1-3) is provided on the surface of the breathable microchannel layer (1-2), and the internal moisture transmission layer (1-3) is woven from polyethylene terephthalate (PET) fibers and nylon fibers; a fiber structure layer (1-4) is provided on the surface of the internal moisture transmission layer (1-3), and the fiber structure layer (1-4) is woven from special-shaped polyethylene terephthalate (PET) fibers; and the fiber structure layer (1-4) is provided with an outer surface (1-5), and the outer surface (1-5) is woven from polyester fibers.

3. The phase change microcapsule fabric for perspiration and cooling protective clothing according to claim 1, characterized in that: The adhesive layer (2-1) in the phase change microcapsule layer (2) is made of polyurethane adhesive; a porous breathable textile base layer (2-2) is provided on the surface of the adhesive layer (2-1), and the porous breathable textile base layer (2-2) is woven by warp-knitted mesh nylon fabric; a phase change material layer (2-3) is provided on the surface of the porous breathable textile base layer (2-2), and the phase change material layer (2-3) is formed by uniformly distributed paraffin phase change microcapsules; and an outer shell protective layer (2-4) is provided on the surface of the phase change material layer (2-3), and the outer shell protective layer (2-4) is made by deposition and coating of silicon dioxide particles.

4. The phase change microcapsule fabric for perspiration and cooling protective clothing according to claim 1, characterized in that: The adhesive layer (3-1) in the PTFE waterproof and breathable membrane layer (3) is made of organic silica gel; the surface of the adhesive layer (3-1) is provided with a reinforcing layer (3-2), and the reinforcing layer (3-2) is woven from a polyester mesh cloth; the surface of the reinforcing layer (3-2) is provided with a microporous PTFE layer (3-3), and the microporous PTFE layer (3-3) is made of microporous structure PTFE; the surface of the microporous PTFE layer (3-3) is provided with a protective coating (3-4), and the protective coating (3-4) is made of ultra-thin PTFE.

5. The phase change microcapsule fabric for perspiration and cooling protective clothing according to claim 1, characterized in that: In the phase-change microcapsule fabric, the polyester fiber layer (1) and the phase-change microcapsule layer (2) are connected by a polymer hot-melt bonding process; the phase-change microcapsule layer (2) and the PTFE waterproof and breathable membrane layer (3) are connected by coating with a polymer silicone resin as an adhesive and bonding by a dot coating bonding process.

6. The phase change microcapsule fabric for perspiration and cooling protective clothing according to claim 1, characterized in that: In the polyester fiber layer (1), the antibacterial skin-friendly layer (1-1) and the breathable microchannel layer (1-2) are connected by physical interlayer adhesion combined with point-shaped hot pressing bonding; the breathable microchannel layer (1-2) and the internal moisture transmission layer (1-3) are connected by low-viscosity polyurethane resin as an adhesive and by micro-glue dot coating bonding; The internal moisture transmission layer (1-3) and the fiber structure layer (1-4) are connected by a high-temperature hot-melt composite process; and the fiber structure layer (1-4) and the outer surface (1-5) are connected by an ultrasonic composite pressing process.

7. The phase change microcapsule fabric for perspiration and cooling protective clothing according to claim 1, characterized in that: In the phase-change microcapsule layer (2), the bonding layer (2-1) and the porous breathable textile substrate layer (2-2) are bonded by a polyurethane adhesive coating; The porous breathable textile base layer (2-2) and the phase change material layer (2-3) are connected by using a microcapsule embedded fixing technology; the phase change material layer (2-3) and the outer shell protective layer (2-4) are connected by using a silicon dioxide particle deposition coating process.

8. The phase change microcapsule fabric for perspiration and cooling protective clothing according to claim 1, characterized in that: In the PTFE waterproof and breathable membrane layer (3), the connection between the adhesive layer (3-1) and the reinforcement layer (3-2) adopts an organic silicone coating as an adhesive and is bonded using a low-temperature curing process; the connection between the reinforcement layer (3-2) and the microporous PTFE layer (3-3) adopts a hot-melt lamination composite process; and the connection between the microporous PTFE layer (3-3) and the protective coating (3-4) adopts an ultra-thin PTFE sol spraying process.

9. The method for operating a phase-change microcapsule fabric for perspiration-wicking and temperature-reducing protective clothing according to claim 1, characterized in that: When sweat contacts the surface of the fabric, the antibacterial skin-friendly layer (1-1) immediately absorbs the sweat. At this time, the modal fiber structure in the antibacterial skin-friendly layer (1-1) absorbs moisture and expands, the humidity on the fiber surface increases, and the local heat capacity increases, thereby reducing the instantaneous temperature of the skin; the sweat diffuses along the modal fiber direction and is quickly transferred to the next breathable microchannel layer (1-2), so as to keep the antibacterial skin-friendly layer (1-1) relatively dry and avoid a sticky feeling; The breathable microchannel layer (1-2) transfers the moisture absorbed by the antibacterial skin-friendly layer (1-1) to the upper layer through its microporous structure, ensuring that moisture does not accumulate inside the modal fiber, further improving the perspiration rate; the internal moisture transmission layer (1-3) disperses the moisture transferred from the breathable microchannel layer (1-2) to the fiber structure layer (1-4), at which time the moisture is temporarily retained in the breathable microchannel layer (1-2), forming a micron-level water film, temporarily storing part of the moisture, and preventing the moisture from instantly accumulating in the internal moisture transmission layer (1-3), affecting the overall perspiration efficiency; at the same time, because the internal moisture transmission layer (1-3) has a strong conductivity The internal moisture transfer layer (1-3) has a lower humidity than the breathable microchannel layer (1-2). This humidity gradient causes a pressure difference to form in the microporous structure of the breathable microchannel layer (1-2), pushing water vapor to diffuse to the moisture transfer layer (1-3), thereby accelerating moisture transfer. When the fiber structure layer (1-4) absorbs moisture and expands, the gap between the shaped polyester fiber (PET) and the nylon fiber temporarily increases, which helps to improve the diffusion speed and air permeability of moisture. After the shaped polyester fiber (PET) and the nylon fiber absorb moisture, the surface hydrophilicity of the fiber structure layer (1-4) is enhanced, forming a thin layer of water The membrane helps moisture flow to the outer layer and further improves the conduction effect of moisture in the fabric; when the wearer's body temperature is too high, the phase change material layer (2-3) absorbs excess heat and begins to melt to store heat; the adhesive layer (3-1) is made of organic silicone and has good flexibility, so that the membrane layer can maintain flexibility and durability during exercise; the adhesive layer (3-1) is mainly used to firmly bond the reinforcement layer (3-2), the microporous PTFE layer (3-3) and the protective coating (3-4) together to ensure the stability of the structure and avoid interlayer peeling during the use of the fabric; the reinforcement layer (3-2) is made of The polyester mesh material is used to provide mechanical strength and prevent the PTFE membrane from being damaged by external forces (such as stretching, friction, etc.); the reinforcement layer (3-2) provides additional support to allow moisture to pass through the microporous PTFE layer (3-3) evenly, thereby ensuring the discharge of internal sweat and preventing the intrusion of external moisture; the microporous PTFE layer (3-3) and the protective coating (3-4) block the entry of moisture through the characteristics of PTFE, while allowing internal water vapor to pass through, thereby effectively preventing the intrusion of external liquids from affecting the cooling performance of the phase change microcapsule layer (2), while accelerating the discharge of sweat and keeping the body dry.

10. The method for restoring a phase-change microcapsule fabric for perspiration-wicking and temperature-reducing protective clothing according to claim 1, characterized in that: In the polyester fiber layer (1), the polyester fiber has strong hygroscopicity. After the heat is released, the moisture in the fiber will be released by evaporation. As the temperature changes, the moisture gradually escapes from the inside of the polyester fiber, keeping the polyester fiber layer (1) dry. The microstructure on the surface of the polyester fiber can carry away the moisture through natural air circulation. The polyester fiber will restore its original shape at high temperatures to ensure the comfort and stability of the fabric. The polyester fiber layer (1) will not be structurally damaged by temperature changes. Therefore, the restored fiber can continue to perform the functions of moisture absorption and breathability. In the phase change microcapsule layer (2), the phase change material usually has a specific phase change temperature range. When the temperature is lower than this range, the phase change material changes from liquid to solid and releases heat. When the temperature is higher than this range, the material melts into liquid and absorbs heat. The phase change material in the phase change microcapsule layer (2) achieves energy storage and The invention releases energy and regulates the body temperature of the wearer; due to the presence of the outer shell protective layer (2-4), it can effectively protect the phase change material, prevent its loss, and ensure the stability of the heat storage and release process, while ensuring the high efficiency and durability of the phase change process; in the polytetrafluoroethylene (PTFE) film layer (3), the PTFE film has a self-cleaning function, and its surface will naturally drain water through the super-hydrophobic effect after contact with water; even after a large amount of sweat or rainwater contact, the micropores of the PTFE film layer can still effectively discharge water vapor and restore its breathability; the high temperature resistance and chemical resistance of the PTFE film prevent it from aging or degrading after long-term use; when the ambient temperature changes, the polytetrafluoroethylene (PTFE) film layer (3) continues to maintain its waterproof and breathable properties and will not be affected; the micropores of the PTFE film will rearrange and restore their pore size after contact with water, ensuring smooth sweat discharge while blocking the penetration of external liquids.

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