A multi-scenario thermal and moisture comfort functional knitted fabric and preparation method thereof

Abstract

The present application discloses a multi-scenario thermal and moisture comfort functional knitted fabric and a preparation method thereof, comprising a fabric body suitable for multiple scenarios, the fabric body having a clothing surface and a skin-contacting surface, the fabric body comprising at least two yarns including a first yarn and a second yarn, wherein one yarn is a light-absorbing heat-generating yarn; the denier of the first yarn is different from the denier of the second yarn, and is divided into coarse yarn and fine yarn, and the coarse yarn and fine yarn form a difference in contact distance with the outside, and the light-absorbing heat-generating yarn is distributed in the corresponding area of ​​the fabric body according to preset conditions, thereby forming a fabric body having a thermal comfort function of absorbing and converting radiation energy into heat energy and a differential moisture conduction capacity of ≥100% on both sides of the liquid water fabric. The present invention can adapt to the use of a variety of different scenarios, including a low metabolism stage, a high metabolism stage, and a post-exercise recovery stage, and different stages play different roles, which can effectively improve the comfort of wearing.

Description

Technical Field

[0001] The present invention belongs to the technical field of textile fabrics, and specifically relates to a multi-scenario thermal and moisture comfort functional knitted fabric with liquid water fabric that absorbs light and generates heat, and differentiated moisture conduction and quick drying on both sides, and a preparation method thereof. Background Art

[0002] With the improvement of living standards, consumers have diversified their lives, which has led to the need to quickly switch between multiple life, leisure and work scenes. Therefore, there is a strong demand for functional fabrics that can adapt to the needs of multiple scenes. Especially for autumn and winter fabrics, how to balance warmth and heat dissipation, sports and aesthetics are the hot topics in recent research.

[0003] About warmth: Patent 202011623625.5, "A five-layer hollow warm cotton-polyester fleece fabric and weaving method" discloses a five-layer hollow warm cotton-polyester fleece fabric, which consists of a first surface layer, a second surface layer and an air layer connecting the first surface layer and the second surface layer; the first surface layer includes a first yarn and a second yarn, the connecting yarn is connected to the second yarn, and the first yarn is arranged on the side away from the air layer; the second surface layer includes a third yarn and a fourth yarn. The above-mentioned warm fabric is achieved by increasing the thickness of the fabric, but the increase in thickness often brings about an increase in the weight of the clothing, and also brings visual bloating. There has been extensive research on how to improve the warmth of the material per unit thickness. For example, hollow polyester fiber has the characteristics of thermal insulation and lightweight. The finishing process after the fleece treatment increases the thickness of the fabric while allowing the fabric to carry more static air, thereby enhancing the warmth retention of the fabric. The larger the air volume contained in the clothing fabric, the less heat is lost through conduction and the better the warmth retention effect. Since air has a poor barrier effect on radiant heat, it is usually necessary to increase the fiber volume in the thermal insulation material or use materials that have infrared reflection or absorption functions. By reducing the air flow in its internal structure, using materials with large specific surface area can better hinder air flow and reduce heat dissipation.

[0004] Regarding heat dissipation: It is well known that heat dissipation needs to be enhanced during exercise. When the excess heat generated during exercise accumulates in the body, sweating occurs. A large number of previous studies have also conducted extensive research on the effect of sweat transfer properties in fabrics on comfort.

[0005] Patent application 201922433023.2, "A unidirectional moisture-conducting fabric" discloses a unidirectional moisture-conducting fabric including a waterproof inner layer, a unidirectional moisture-conducting point, a fabric inner layer, a fabric surface layer and a hydrophilic outer layer. The waterproof inner layer and the unidirectional moisture-conducting point are located in the innermost layer and in contact with the human body; the waterproof inner layer is composited to the inner side of the fabric inner layer through a printing process as a unidirectional moisture-conducting point; the hydrophilic outer layer is composited to the outermost side of the fabric surface layer through a dipping-rolling-baking-curing process; thereby achieving the unidirectional moisture-conducting function.

[0006] Patent application 201710056898.8, "An elastic water-absorbent quick-drying knitted fabric and its use", discloses a knitted fabric with a surface layer and an inner layer; the yarns of the surface layer and the inner layer are both polyester elastic fibers; at least one path of the inner layer in a tissue cycle is composed of two different knitting actions, part A and part B, and the part B is formed by a non-loop knitting action; the water absorption rate of the knitted fabric is less than 3 seconds, the water absorption diffusion area ratio of the surface layer and the inner layer is greater than 3.0, and the water retention rate of the inner layer is less than 20%.

[0007] Patent application 201811027306.0, "A multifunctional one-way moisture-conducting fabric", discloses a multifunctional one-way moisture-conducting double-sided knitted mesh cloth. The inner layer of the fabric uses polyethylene yarn or polyethylene composite fiber yarn, such as polyethylene / polyamide, polyethylene / polyester, polyethylene / polypropylene, and forms a mesh structure through a loop weaving method; the outer layer uses yarn with good water absorption, such as cotton yarn, linen yarn, regenerated cellulose fiber yarn, polyester yarn, woven into a plain weave structure; the surface area of ​​the outer layer of the fabric is larger than that of the inner layer, and it has a cool, smooth, one-way moisture-conducting function.

[0008] Life often involves rapid scene transitions, such as (1) the transition between a warm shopping mall and a cold street; (2) the transition between a sports venue and a lounge; (3) the stuffy kitchen and a comfortable living room, etc. Scene transitions are often accompanied by rapid changes in temperature, so it is extremely necessary to develop a piece of clothing made of fabrics that is suitable for multiple scene environments and can balance warmth and heat dissipation for the human body. Although a large number of warmth and perspiration solutions have been studied in the prior art, there are few reports on how to achieve a balance between the heat dissipation requirements in a high metabolic state and the warmth requirements in a low metabolic state in a multi-scene life mode. Summary of the invention

[0009] The technical problem to be solved by the present invention is to provide a multi-scenario thermal and moisture comfort functional knitted fabric and a preparation method thereof.

[0010] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0011] A multi-scenario thermal and moisture comfort functional knitted fabric comprises a fabric body suitable for multiple scenarios, the fabric body having a clothing surface and a skin-contacting surface, the fabric body comprising at least two types of yarns including a first yarn and a second yarn, wherein one of the yarns is a light-absorbing heat-generating yarn; the denier of the first yarn is different from the denier of the second yarn, and the first yarn is divided into a coarse yarn and a fine yarn; the coarse yarn and the fine yarn have a structural relationship D 粗 :D 细 ≥1.2,F 粗 :F 细 ≤0.9, D 粗Indicates the denier of the roving, D 细 Indicates the denier of the spun yarn, F 粗 Indicates the number of filaments in the roving, F 细 Indicates the number of filaments in the spun yarn; the fabric body has several unit cycle structures woven by coarse yarn and spun yarn. In one unit cycle structure, the coarse yarn and the spun yarn are 2.0≥m 粗 :n 细 ≥0.3 ratio interval arrangement, and m 粗 ≤2.0, n 细 Indicates the number of spun yarns, m 粗 It represents the number of coarse yarns, and the contact distances between the coarse yarns and the fine yarns and the outside are differentiated; a functional layer that absorbs radiation energy and converts it into thermal energy is formed by weaving the first yarn and the second yarn in the fabric body, thereby forming a fabric body having a thermal comfort function of absorbing radiation energy and converting it into thermal energy and a differentiated moisture conduction capacity (OWTC) of liquid water on both sides of the fabric ≥100%.

[0012] As a further solution, the ratio of the water conductivity of the roving to the water conductivity of the spun yarn is LP 细 :LP 粗 ≥1.2.

[0013] As a further solution, the fabric body is a weft-knitted plain weave structure, the first yarn is a coarse yarn, and the first yarn is a light-absorbing heat-generating yarn; or the second yarn is a fine yarn, and the second yarn is a light-absorbing heat-generating yarn.

[0014] As a further solution, the fabric body is a basic double-sided structure, and the basic double-sided structure means that the clothing surface and the skin-contacting surface of the fabric body have the same tissue structure, the first yarn is a coarse yarn, and the first yarn is a light-absorbing heat-generating yarn, and the light-absorbing heat-generating yarn as the first yarn is distributed on the clothing surface and the skin-contacting surface of the fabric body; or the second yarn is a fine yarn, and the second yarn is a light-absorbing heat-generating yarn, and the light-absorbing heat-generating yarn as the second yarn is distributed on the clothing surface and the skin-contacting surface of the fabric body.

[0015] As a further solution, the content of the light-absorbing heat-generating yarn in the fabric body is greater than 10%, and preferably the content of the light-absorbing heat-generating yarn in the fabric body is greater than 25%.

[0016] As a further solution, the light-absorbing heat-generating yarn is arranged on the clothing surface or the skin-contacting surface of the fabric body, and the coverage rate is greater than 20%. Preferably, the coverage rate of the light-absorbing heat-generating yarn on the clothing surface or the skin-contacting surface is greater than 30%.

[0017] As a further solution, the light-absorbing heat-generating yarn is one or more of acrylic, polyester and nylon yarns that have light-absorbing heat-generating function by adding light-absorbing substances.

[0018] As a further solution, the clothing surface and / or the skin-contacting surface of the fabric body is subjected to a hair effect treatment such as brushing, sanding and fleecing to form a plush layer.

[0019] A method for preparing a multi-scenario thermal and moisture comfort functional knitted fabric comprises the following steps:

[0020] A first yarn and a second yarn with different denier numbers are selected to form a coarse yarn and a fine yarn, the first yarn or the second yarn is a light-absorbing heat-generating yarn, and a fabric body having a thermal comfort function of absorbing radiation energy and converting it into heat energy and a differential moisture conduction capacity (OWTC) of liquid water on both sides of the fabric of ≥100% is formed by weaving the first yarn and the second yarn, and the light-absorbing heat-generating yarn is distributed on the clothing surface or the skin-contacting surface of the fabric body;

[0021] The first yarn and the second yarn have a corresponding structural relationship: D 粗 :D 细 ≥1.2,F 粗 :F 细 ≤0.9, D 粗 Indicates the denier of the roving, D 细 Indicates the denier of the spun yarn, F 粗 Indicates the number of filaments in the roving, F 细 Indicates the number of filaments in the spun yarn; the fabric body has several unit cycle structures woven by coarse yarn and spun yarn. In one unit cycle structure, the coarse yarn and the spun yarn are 2.0≥m 粗 :n 细 ≥0.3 ratio interval arrangement, and m 粗 ≤2.0, n 细 Indicates the number of spun yarns, m 粗 It indicates the number of coarse yarns. Through the size relationship between coarse yarns and fine yarns, the contact distances between coarse yarns and fine yarns and the outside are differentiated, resulting in differentiated moisture conduction capabilities on both sides of the fabric body.

[0022] The obtained fabric body has a one-way moisture conduction capacity OWTC≥100%; the liquid evaporation rate for synthetic fiber fabric is ≥1.0 ml / hr, and the liquid evaporation rate for cellulose fiber blended fabric is ≥0.5 ml / hr.

[0023] The fabric of the present invention can be widely used in various clothing, and has the following different functions during wearing: the fabric body absorbs radiation energy and converts it into heat energy, and uses the generated heat energy to increase the temperature of the fabric surface; it also has a moisture comfort function: using the difference in the contact distance between the coarse yarn and the fine yarn and the outside, the fabric has the functions of differential transmission and quick drying on both sides; the fabric has the following different functions during wearing: in the low metabolism stage, the heat loss in the form of radiation is reduced, and converted into heat energy to improve the warming effect of the fabric per unit thickness; in the high metabolism stage, the differential moisture conduction of the fabric facilitates the discharge of sweat from the body surface to the surface of the fabric, improves the dryness of the inner bottom of the fabric, and uses the higher surface temperature of the fabric to achieve the effect of increasing the evaporation rate of liquid water; in the recovery stage after exercise, using differential moisture conduction and increasing the temperature of the fabric is more conducive to shortening the drying process of the fabric, reducing the time of the uncomfortable feeling of dampness and coldness after exercise, thereby improving the comfort of wearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the principle structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0026] Figure 3 This is a comparative test curve of the light-heat storage performance of Example 1 of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of Example 2 of the present invention. DETAILED DESCRIPTION

[0028] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] When people wear clothes, they will experience many different scenarios. The common scenarios are shown in Table 1 below:

[0030] Table 1

[0031]

[0032] In the above definition, low-intensity exercise can usually be considered as walking or small-scale exercise, and the amount of exercise usually does not reach the level of sweating. High-intensity exercise, such as playing ball, running, etc., forms liquid sweat on the human skin.

[0033] As can be seen from the table above, assuming that environmental factors remain unchanged, how to achieve a higher warmth retention effect with a lower fabric weight and thickness; keep the inner surface of the fabric dry when sweating and achieve heat dissipation through rapid and effective evaporation; and evaporate the moisture in the fabric as quickly as possible during the recovery period. To achieve this goal, improving the thermal resistance of the fabric is the key. Specific analysis principle: (1) Under the premise that environmental conditions remain unchanged and the fabric thickness remains unchanged or decreases, the total amount of heat transferred by convection and conduction remains basically unchanged. Even when the thickness decreases, the conduction heat dissipation will be further enhanced. Therefore, reducing heat dissipation, especially reducing the radiation heat dissipation of the fabric, is one of the feasible methods; (2) At the same time, using energy conversion materials to absorb the radiation energy in the environment and convert it into perceptible heat energy to improve the warmth retention effect is another way; (3) After sweating, the fabric contains water. The presence of this liquid water destroys the original thermal insulation properties of the fabric, reduces the thermal resistance and enhances the heat dissipation effect. However, this property makes people feel damp and sticky during the recovery stage of stopping exercise, which often causes colds. Therefore, the differentiated moisture conduction function of the two sides of the fabric and the increased temperature enhance the evaporation of sweat, further shorten the drying time of the fabric, and thus reduce the water content in the fabric more quickly during the recovery phase of exercise, which is the third key point.

[0034] For this purpose, as attached Figure 1 As shown, the present application provides a multi-scenario thermal and moisture comfort functional knitted fabric, including a fabric body 1 suitable for multiple scenarios, the fabric body 1 having a clothing surface and a skin-contacting surface, the fabric body including at least two kinds of yarns including a first yarn Y1 and a second yarn Y2, wherein one of the yarns is a light-absorbing heat-generating yarn; the denier number of the first yarn Y1 is different from the denier number of the second yarn Y2, and is divided into a coarse yarn and a fine yarn; the coarse yarn and the fine yarn have a structural relationship D 粗 :D 细 ≥1.2,F 粗 :F 细 ≤0.9, D 粗 Indicates the denier of the roving, D 细 Indicates the denier of the spun yarn, F 粗 Indicates the number of filaments in the roving, F 细 Indicates the number of filaments in the spun yarn; the fabric body has several unit cycle structures woven by coarse yarn and spun yarn. In one unit cycle structure, the coarse yarn and the spun yarn are 2.0≥m 粗 :n 细 ≥0.3 ratio interval arrangement, and m 粗 ≤2.0, n 细 Indicates the number of spun yarns, m 粗Indicates the number of rovings, and the rovings and spun yarns form a difference in contact distance with the outside; the first yarn Y1 and the second yarn are woven into the fabric body to form a functional layer that absorbs and converts radiation energy into heat energy, thereby forming a fabric body with a thermal comfort function that can absorb and convert radiation energy into heat energy and a differential moisture conduction capacity (OWTC) of ≥100% on both sides of the liquid water fabric. The light-absorbing heat-generating yarn can mainly absorb infrared radiation.

[0035] The fabric body is formed by weaving light-absorbing heating yarn, which receives infrared radiation from the external environment or the human body. At the same time, since the yarns are of different thicknesses, when there is sweat on the skin surface, the coarse yarn has a greater chance of contacting the liquid and transferring it, while the fine yarn has a lower chance of contacting the skin. Therefore, liquid water will diffuse from the coarse yarn to the fine yarn; the liquid water on the clothing surface evaporates together in the coarse yarn and the fine yarn, so the moisture evaporation of the fabric of this structure forms a difference on both sides of the fabric, resulting in differential transfer of liquid water between the two surfaces of the fabric. Another advantage is that since the coarse yarn is separated by the fine yarn, water on the skin-contacting surface can diffuse through the fine yarn, thereby reducing the chance of the skin contacting the yarn and being wetted, thereby improving the feeling of dryness.

[0036] The ratio of the water conductivity of the coarse yarn to the water conductivity of the fine yarn is LP 细 :LP 粗 ≥1.2. Within this ratio limit, the overall water conductivity can be ensured.

[0037] As for the specific structure of the fabric, the fabric body can be a weft-knitted plain weave structure, the first yarn Y1 is a coarse yarn, and the first yarn Y1 is a light-absorbing heat-generating yarn; or the second yarn Y2 is a fine yarn, and the second yarn Y2 is a light-absorbing heat-generating yarn.

[0038] Or the fabric body is a basic double-sided structure, and the basic double-sided structure means that the clothing surface and the skin-contacting surface of the fabric body have the same tissue structure, and the first yarn Y1 is a coarse yarn, and the first yarn Y1 is a light-absorbing heat-generating yarn, and the light-absorbing heat-generating yarn as the first yarn Y1 is distributed on the clothing surface and the skin-contacting surface of the fabric body; or the second yarn Y2 is a fine yarn, and the second yarn Y2 is a light-absorbing heat-generating yarn, and the second yarn Y2 is a light-absorbing heat-generating yarn, and is distributed on the clothing surface and the skin-contacting surface of the fabric body.

[0039] In addition, the light-absorbing heating yarn is a yarn such as acrylic, polyester or nylon that achieves the light-absorbing heating function by adding light-absorbing substances, or a blended yarn of the above materials, preferably infrared light-absorbing heating yarn and full-spectrum heat-absorbing yarn. In order to ensure the light-absorbing heating yarn has the effect of heating and warming and accelerating evaporation in the final product, the coverage rate of the light-absorbing heating yarn on the clothing surface or skin-contacting surface of the fabric body is greater than 20%, preferably 30%, or the content in the fabric body is greater than 10%, preferably greater than 25%. In this way, the infrared light-absorbing heating yarn can absorb radiation energy in the fabric significantly enough and convert radiation into heat energy to achieve the effect of raising the temperature of the fabric.

[0040] In general, the light-absorbing and heat-generating yarn can be distributed inside the fabric body, on the clothing surface or the skin-contacting surface, or on different surfaces at the same time. It is preferably applied to the inner surface of underwear products and to the outer surface of outerwear fabrics to help more effectively absorb infrared radiation energy from the human body or the sun.

[0041] The light-absorbing heating yarn is made of acrylic, polyester or nylon yarns that achieve the function of light-absorbing heating by adding light-absorbing substances, or blended yarns of the above materials with other fibers and cotton, etc. Its characteristics are compared with the weft-knitted plain fabrics made of ordinary polyester yarns of the same specifications. The light-absorbing heating yarn and the same specification fabrics are exposed to light for 20 minutes according to GB / T 18319-2019 standard. The average temperature is at least 1.5°C higher than the polyester reference sample

[0042] As a further solution, the clothing surface and / or the skin-contacting surface of the fabric body is subjected to a hair effect treatment such as brushing, sanding and fleecing to form a plush layer.

[0043] In the above scheme, by defining the structural relationship between coarse yarn and fine yarn, and the relationship between the spacing arrangement of coarse yarn and fine yarn during weaving, taking the basic weft-knitted plain fabric structure as an example, in a unit cycle organization, the coarse yarn and fine yarn are 2.0≥m 粗 :n 粗 ≥0.3 intervals, and m 粗 ≤2.0, n 粗 ≤6.0. The ratio of the water conductivity of the roving and yarn to the water conductivity of the spun yarn is LP 细 :LP 粗 ≥1.2, and D 粗 :D 细 ≥1.2,F 粗 :F 细 ≤0.9. By limiting this specific ratio, the transfer of liquid water in the fabric can be better controlled, the focus of moisture on the skin-contacting surface can be reduced, and the dry feeling of the skin can be improved.

[0044] In addition, for specific weaving, a method for preparing a multi-scenario thermal and moisture comfort functional knitted fabric comprises the following steps:

[0045] A first yarn Y1 and a second yarn Y2 with different deniers are selected to form a coarse yarn and a fine yarn. The first yarn Y1 or the second yarn Y2 is a light-absorbing heat-generating yarn. The first yarn Y1 and the second yarn Y2 are woven to form a fabric body having a thermal comfort function of absorbing radiation energy and converting it into heat energy and a differential moisture conduction capacity (OWTC) of liquid water on both sides of the fabric of ≥100%. The light-absorbing heat-generating yarn is distributed on the clothing surface or the skin-contacting surface of the fabric body.

[0046] The first yarn Y1 and the second yarn Y2 have a corresponding structural relationship: D 粗 :D 细 ≥1.2,F 粗 :F 细 ≤0.9, D 粗 Indicates the denier of the roving, D 细 Indicates the denier of the spun yarn, F 粗 Indicates the number of filaments in the roving, F 细 Indicates the number of filaments in the spun yarn; the fabric body has several unit cycle structures woven by coarse yarn and spun yarn. In one unit cycle structure, the coarse yarn and the spun yarn are 2.0≥m 粗 :n 细 ≥0.3 ratio interval arrangement, and m 粗 ≤2.0, n 细 Indicates the number of spun yarns, m 粗 It indicates the number of coarse yarns. Through the size relationship between coarse yarns and fine yarns, the contact distances between coarse yarns and fine yarns and the outside are differentiated, resulting in differentiated moisture conduction capabilities on both sides of the fabric body.

[0047] The obtained fabric body has a one-way moisture conduction capacity OWTC≥100%; the liquid evaporation rate for synthetic fiber fabric is ≥1.0 ml / hr, and the liquid evaporation rate for cellulose fiber blended fabric is ≥0.5 ml / hr.

[0048] The following is an illustration with specific embodiments.

[0049] Embodiment 1

[0050] As attached Figure 2 and 3 As shown, the fabric body is woven by the first yarn Y1 being polyester 75D / 30F coarse yarn and the second yarn Y2 being polyester 50D / 60F fine yarn to form a single-sided plain fabric. The fine yarn is a light-absorbing heat-generating yarn and the coarse yarn is a non-light-absorbing heat-generating yarn. The ratio of the yarn water-conducting capacity of the coarse yarn to the yarn water-conducting capacity of the fine yarn is LP 细 :LP 粗 ≥1.2, and D 粗 :D 细=1.5, satisfies the condition of being greater than 1.2, F 粗 :F 细 =0.5, which satisfies the condition of less than 0.9. In a unit cycle organization, the coarse yarn and the spun yarn are 2.0≥m 粗 :n 细 ≥0.3, in this embodiment, m 粗 =1,n 细 =1, forming a fabric body with multi-scenario thermal comfort function and liquid water fabric two-side differential moisture conduction capacity (OWTC) ≥ 100%. At this time, the light-absorbing heat-generating yarn (spun yarn, i.e., the second yarn Y2) in the fabric body is 72%, and the light-absorbing heat-generating yarn is distributed on both the clothing surface and the skin-contacting surface, and the coverage rate on both the clothing surface and the skin-contacting surface is 52%.

[0051] According to GB / T 18319-2019 standard, the heat storage test was carried out for 20 minutes of continuous illumination as follows:

[0052] Comparative sample: The first yarn Y1 and the second yarn Y2 are both made of polyester 75D / 30F roving woven into a plain weft knitted structure fabric. The heat storage test data of the comparative sample is as follows in Table 2:

[0053] Table 2

[0054]

[0055]

[0056] The thermal storage test data of Example 1 of the present application is shown in Table 3 below:

[0057] Table 3

[0058]

[0059] From the above experimental data, it can be seen that the performance of the yarn is first determined by the plain weft knitted structure. Compared with the weft knitted plain fabric made of ordinary polyester yarn of the same specification, the average temperature of the fabric of the same specification of the light-absorbing heat-generating yarn is 2.5°C higher than the temperature of the polyester reference sample after 20 minutes of illumination according to the GB / T 18319-2019 standard, which meets the requirement of being at least 1.5°C higher.

[0060] Since the light-absorbing and heat-generating yarn can receive light radiation from the environment or the human body, whether it is on the skin-contacting side or the clothing side of the fabric, the fabric body absorbs the radiation energy and converts it into heat energy, and at the same time uses the generated heat energy to increase the temperature of the fabric body surface, thereby improving the evaporation efficiency and achieving the purpose of quick drying.

[0061] At the same time, since the yarns are thick or thin, when there is sweat on the skin surface, the thick yarn has a greater chance of contacting the liquid and transferring it, while the thin yarn has a lower chance of contacting the skin. Therefore, the liquid water will diffuse from the thick yarn to the thin yarn; on the fabric clothing surface, the liquid water evaporates in the thick yarn and the thin yarn together, so the moisture evaporation of the fabric of this structure forms a difference on both sides of the fabric, resulting in differential transfer of liquid water between the two surfaces of the fabric. Another advantage is that since the thick yarn is separated by the thin yarn, the water on the skin-contacting surface needs to diffuse through the thin yarn, thereby reducing the chance of the skin contacting and being wetted by the yarn and increasing the feeling of dryness, realizing the function of differential transfer of liquid water on both sides of the fabric and quick drying.

[0062] In this example, the knitted fabric was measured according to the standard AATCC 195 "Liquid Moisture Management Properties of Textile Fabrics". The one way transport capability (OWTC) of the fabric body measured this time was 205%.

[0063] In this example, the knitted fabric is tested according to standard AATCC 201 and its liquid water evaporation rate is 1.32 ml / hr.

[0064] Embodiment 2

[0065] like Figure 4 As shown, the fabric body is woven by the first yarn Y1: polyester 50D / 48F coarse yarn and the second yarn Y2: polyester 40D / 72F fine yarn to form a double-sided plain fabric. Among them, the fine yarn is light-absorbing and heat-generating yarn. In this example: the ratio of the yarn water conductivity of the coarse yarn to the yarn water conductivity of the fine yarn is LP 细 :LP 粗 ≥1.2, and D 粗 :D 细 =1.25,F 粗 :F 细 =0.667, all within the limit. In a unit cycle organization, the coarse yarn and the fine yarn are 2.0≥m 粗 :n 细 ≥0.3, in this embodiment, m 粗 =1,n 细 =1, forming a fabric body with thermal comfort function and liquid water fabric two-side differential moisture conduction capacity (OWTC) ≥ 100%. At this time, the light-absorbing heating yarn in the fabric body is 68%, and the light-absorbing heating yarn is distributed on the clothing surface and the skin-contacting surface of the fabric body, and the coverage rate is 48%.

[0066] In this example, the knitted fabric was measured according to the standard AATCC 195 "Liquid Moisture Management Properties of Textile Fabrics". The one-way moisture transport capability (OWTC) of the fabric body measured this time was 270%. In this example, the knitted fabric was tested according to the standard AATCC 201 and its liquid water evaporation rate was 1.21 ml / hr.

[0067] Similarly, a heat storage test was performed for 20 minutes in accordance with GB / T 18319-2019. Since the light-absorbing heat-generating yarn can receive light radiation from the environment or the human body whether it is on the skin-contacting side of the fabric or the clothing side. The fabric body absorbs the radiation energy and converts it into heat energy, and uses the generated heat energy to increase the surface temperature of the fabric body. Compared with the weft-knitted plain fabric made of ordinary polyester yarn of the same specification, the average temperature of the light-absorbing heat-generating yarn fabric of the same specification in accordance with GB / T 18319-2019 standard for 20 minutes is at least 1.5°C higher than that of the polyester reference sample.

[0068] To sum up, the fabric itself has the following different functions during wearing: in the low metabolism stage, it reduces the loss of heat in the form of radiation and converts it into heat energy to improve the warmth retention effect of the fabric per unit thickness; in the high metabolism stage, the differential moisture conduction of the fabric facilitates the discharge of sweat from the body surface to the surface of the fabric, improves the dryness of the inner bottom of the fabric, and increases the evaporation rate of liquid water; in the recovery stage after exercise, the use of differential moisture conduction and increased fabric temperature is more conducive to shortening the fabric drying process and reducing the uncomfortable feeling of dampness and coldness after exercise.

[0069] It should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-scenario thermal and moisture comfort functional knitted fabric, comprising a fabric body suitable for multiple scenarios, the fabric body having a clothing surface and a skin-contacting surface, characterized in that: The fabric body includes at least two kinds of yarns including a first yarn and a second yarn, wherein one of the yarns is a light-absorbing heat-generating yarn; the denier of the first yarn is different from the denier of the second yarn, and is divided into coarse yarn and fine yarn; the coarse yarn and the fine yarn have a structural relationship D 粗 : D 细 ≥1.2, F 粗 : F 细 ≤0.9, D 粗 Indicates the denier of the roving, D 细 Indicates the denier of the spun yarn, F 粗 Indicates the number of filaments in the roving, F 细 Indicates the number of filaments in the spun yarn; the fabric body has several unit cycle structures woven by coarse yarn and spun yarn. In one unit cycle structure, the coarse yarn and the spun yarn are 2.0≥m 粗 :n 细 ≥0.3 ratio interval arrangement, and m 粗 ≤2.0, n 细 Indicates the number of spun yarns, m 粗 It represents the number of coarse yarns, and the contact distances between the coarse yarns and the spun yarns and the outside are differentiated; the first yarn and the second yarn are woven into the fabric body to form a functional layer that absorbs radiation energy and converts it into thermal energy, so as to obtain a fabric body having a thermal comfort function of absorbing radiation energy and converting it into thermal energy and a one-way moisture conduction capacity OWTC≥100%, the one-way moisture conduction capacity of the fabric body being measured according to standard AATCC 195, and the clothing surface and / or the skin-contacting surface of the fabric body being brushed, sanded and grabbed to form a plush layer.

2. The multi-scenario thermal and moisture comfort functional knitted fabric according to claim 1, characterized in that: The fabric body is a weft-knitted plain weave structure, the first yarn is a coarse yarn, and the first yarn is a light-absorbing heat-generating yarn; or the second yarn is a fine yarn, and the second yarn is a light-absorbing heat-generating yarn.

3. The multi-scenario thermal and moisture comfort functional knitted fabric according to claim 1, characterized in that: The fabric body is a basic double-sided structure, and the basic double-sided structure means that the clothing surface and the skin-contacting surface of the fabric body have the same tissue structure, the first yarn is a coarse yarn, and the first yarn is a light-absorbing heat-generating yarn, and the light-absorbing heat-generating yarn as the first yarn is distributed on the clothing surface and the skin-contacting surface of the fabric body; or the second yarn is a fine yarn, and the second yarn is a light-absorbing heat-generating yarn, and the light-absorbing heat-generating yarn as the second yarn is distributed on the clothing surface and the skin-contacting surface of the fabric body.

4. The multi-scenario thermal and moisture comfort functional knitted fabric according to claim 3, characterized in that: The content of the light-absorbing heat-generating yarn in the fabric body is greater than 10%.

5. The multi-scenario thermal and moisture comfort functional knitted fabric according to claim 4, characterized in that: The light-absorbing and heat-generating yarn is arranged on the clothing surface or the skin-contacting surface of the fabric body, and the coverage rate is greater than 20%.

6. A method for preparing the multi-scenario thermal and moisture comfort functional knitted fabric according to claim 1, characterized in that: The following steps are involved: A first yarn and a second yarn with different deniers are selected to form a coarse yarn and a fine yarn, the first yarn or the second yarn is a light-absorbing heat-generating yarn, and a fabric body having a thermal comfort function of absorbing radiation energy and converting it into heat energy and a unidirectional moisture conduction capacity of ≥100% is formed by weaving the first yarn and the second yarn, and the light-absorbing heat-generating yarn is distributed on the clothing surface or the skin-contacting surface of the fabric body; The first yarn and the second yarn have a corresponding structural relationship: D 粗 : D 细 ≥1.2, F 粗 : F 细 ≤0.9, D 粗 Indicates the denier of the roving, D 细 Indicates the denier of the spun yarn, F 粗 Indicates the number of filaments in the roving, F 细 Indicates the number of filaments in the spun yarn; the fabric body has several unit cycle structures woven by coarse yarn and spun yarn. In one unit cycle structure, the coarse yarn and the spun yarn are 2.0≥m 粗 :n 细 ≥0.3 ratio interval arrangement, and m 粗 ≤2.0, n 细 Indicates the number of spun yarns, m 粗 It indicates the number of coarse yarns. Through the size relationship between coarse yarns and fine yarns, the contact distances between coarse yarns and fine yarns and the outside are differentiated, resulting in differentiated moisture conduction capabilities on both sides of the fabric body.

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