Bidirectional heating, heat insulation, moisture absorption, deodorization and warm keeping wool flocculus

Abstract

The utility model discloses a two-way heating, heat-insulating, moisture-absorbing, odor-resistant and warm-keeping wool flocculus which sequentially comprises an outer aerogel film, a far infrared heating and warm-keeping layer, an inner aerogel film and a moisture-absorbing, odor-resistant, heating and warm-keeping layer from top to bottom, and the far infrared heating and warm-keeping layer is connected with the moisture-absorbing, odor-resistant, heating and warm-keeping layer through a needling process. The outer aerogel film and the far-infrared heating and warm-keeping layer are bonded together through hot air melting; and the inner aerogel film is bonded with the far-infrared heating and warm-keeping layer and the moisture-absorbing and odor-resistant heating and warm-keeping layer through hot air melting. According to the bi-directional heating, heat insulation, moisture absorption, deodorization and warm keeping wool flocculus, heating raw materials can be obtained from the environment and the human body at the same time, the warm keeping performance is enhanced through the bi-directional synchronous effect, and peculiar smell absorption and sweat conduction can be conducted through the innermost warm keeping layer; in addition, due to the design of the two layers of aerogel films, the wool flocculus can isolate the generated heat in the flocculus, so that a human body can continuously feel warm and comfortable.

Description

Technical Field

[0001] The utility model belongs to the technical field of wool flake design, and in particular relates to a two-way heat-generating, heat-insulating, moisture-absorbing, deodorizing and warm-keeping wool flake. Background Art

[0002] Wool fiber is a commonly used natural fiber material. Due to its natural properties, excellent moisture absorption, warmth retention, and wear resistance, it is widely used in clothing such as wadding and knitwear, and home furnishings such as carpets and curtains. However, existing wool wadding on the market generally has problems such as easy shrinkage and deformation, insufficient moisture absorption, and easy odor generation. These problems are particularly prominent in high-intensity exercise or long-term wear. In addition, traditional thermal insulation materials often rely on increasing thickness to achieve a warming effect, which not only limits the flexibility and portability of the clothing, but also affects the wearer's freedom of movement and overall comfort. How to improve warmth retention while maintaining comfort and breathability has become an urgent problem that needs to be solved.

[0003] A Chinese patent (application number: 202120659133.5, publication number: CN 216100747 U, publication date: 2022.03.22) discloses a thermal insulation and flame retardant batting felt based on porous polyimide fiber, comprising an outer protective layer, an outer thermal insulation layer, an intermediate thermal insulation layer, an inner thermal insulation layer and an inner protective layer arranged in sequence from top to bottom, wherein the inner protective layer and the outer protective layer are composed of pure porous polyimide fiber; the outer protective layer, the outer thermal insulation layer, the intermediate thermal insulation layer, the inner thermal insulation layer and the inner protective layer are bonded together with polyimide resin; the thermal insulation and flame retardant batting felt adopts a five-layer structure, which improves the thermal insulation performance while having excellent flame retardant properties; however, the flexibility of the polyimide fiber may be limited, especially after forming a multi-layer structure, the flexibility of the entire batting felt may be insufficient. This will affect its comfort in some application scenarios that need to fit the curves of the human body. Utility Model Content

[0004] The utility model aims to provide a two-way heat-generating, heat-insulating, moisture-absorbing, deodorizing and warm-keeping woolen wadding, which solves the problems of low wearing comfort and poor warmth-keeping performance of existing woolen waddings.

[0005] The technical solution adopted by the utility model is a two-way heating, heat-insulating, moisture-absorbing, deodorizing and warm-keeping wool sheet, which comprises, from top to bottom, an outer aerogel film, a far-infrared heating and thermal insulation layer, an inner aerogel film and a moisture-absorbing and deodorizing heating and thermal insulation layer. The far-infrared heating and thermal insulation layer and the moisture-absorbing and deodorizing heating and thermal insulation layer are connected by a needle punching process, and the outer aerogel film and the far-infrared heating and thermal insulation layer are bonded together by hot air melting; the inner aerogel film, the far-infrared heating and thermal insulation layer and the moisture-absorbing and deodorizing heating and thermal insulation layer are bonded together by hot air melting.

[0006] The utility model is also characterized in that:

[0007] A plurality of holes are provided on both the outer aerogel film and the inner aerogel film, and the holes are evenly distributed on the aerogel film. The holes of the outer aerogel film and the inner aerogel film are staggered in the horizontal direction.

[0008] The far-infrared heating and thermal insulation layer is made of a uniform blend of wool fiber, far-infrared heating fiber, aerogel fiber and ES fiber. The thickness of the far-infrared heating and thermal insulation layer is 3.5-6.5mm, and the square meter weight is 80-120g / m 2 .

[0009] The far-infrared heating fiber has a fineness of 1.2-1.7D, a length of 25-50mm, and a density of 1.3-1.5g / cm 3 The aerogel fiber is a porous nanostructured aerogel fiber with a fineness of 1.2-1.7D and a density of 0.02-0.5g / cm 3 , length is 25-50mm.

[0010] The moisture-absorbing, deodorizing, and heat-insulating layer is evenly blended with wool fiber, moisture-absorbing and heat-insulating fiber, bamboo charcoal fiber, and ES fiber. The thickness is 3.0-6.0mm, and the weight per square meter is 60-100g / m 2 .

[0011] The fineness of wool fiber is 1.2-1.7D, the length is 45-65mm, and the density is 1.0-1.4g / cm 3 ; ES fiber has a fineness of 1.5-2.5D and a length of 30-60mm.

[0012] The hygroscopic and heat-generating fiber is a hygroscopic and heat-generating viscose staple fiber with a fineness of 1.3D-1.5D, a length of 25-50mm, and a density of 1.4-1.6g / cm 3 ; Bamboo charcoal fiber is polyester-based bamboo charcoal short fiber, the fineness of bamboo charcoal fiber is 1.2-1.7D, and the length is 30-50mm.

[0013] The outer aerogel film and the inner aerogel film are both inorganic aerogel nanofilms, the thickness of the outer aerogel film and the inner aerogel film are both 50-400 μm, and the porosity is both 40%-80%.

[0014] The beneficial effects of the utility model are:

[0015] The bidirectional heat-generating, heat-insulating, moisture-absorbing, deodorizing and warm-keeping wool wadding of the utility model can obtain heat-generating materials from the environment and the human body at the same time, enhance the thermal insulation performance through bidirectional synchronous action, and can use the innermost moisture-absorbing, deodorizing and heat-generating thermal insulation layer to absorb odor and conduct sweat, thereby improving wearing comfort; in addition, the design of the two layers of aerogel film enables the wool wadding to isolate the generated heat in the wadding, and has good breathability, so that the human body can continue to feel warm and comfortable, and can maintain body temperature for a long time in extreme environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the bidirectional heat-generating, heat-insulating, moisture-absorbing, deodorizing and warm-keeping wool wadding of the present invention;

[0017] Figure 2 This is a working principle diagram of the bidirectional heat-generating, heat-insulating, moisture-absorbing, deodorizing and warm-keeping wool wadding of the utility model;

[0018] Figure 3 This is a schematic diagram of the connection between aerogel fibers and other mixed fibers in the bidirectional heat-insulating, moisture-absorbing, deodorizing and warm-keeping wool sheet of the utility model.

[0019] In the figure: 1. Outer aerogel film; 2. Far-infrared heating and thermal insulation layer; 3. Inner aerogel film; 4. Moisture-absorbing, deodorizing, heating and thermal insulation layer; 5. Far-infrared heating fibers that absorb short-wave energy from the environment; 6. Far-infrared rays; 7. Heat released by the human body; 8. Sweat produced by human skin or humidity between the fabric and the skin; 9. Heat released by the moisture-absorbing heating fibers; 10. Wool fibers; 11. Mixed far-infrared heating fibers, wool fibers, and ES fibers. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0021] Example 1

[0022] The utility model discloses a two-way heat-insulating, moisture-absorbing, deodorizing and warm-keeping woolen wadding. Figure 1 As shown, from top to bottom are the outer aerogel film 1, the far-infrared heating and thermal insulation layer 2, the inner aerogel film 3 and the hygroscopic and deodorizing heating and thermal insulation layer 4, among which the far-infrared heating and thermal insulation layer 2 and the hygroscopic and deodorizing heating and thermal insulation layer 4 are treated with a needle punching process, and the hygroscopic and deodorizing heating and thermal insulation layer 4 is treated with a moisture absorbing and perspiration wicking finishing agent, and the outer aerogel film 1 and the far-infrared heating and thermal insulation layer 2 are melted and bonded together by hot air; the inner aerogel film 3 and the far-infrared heating and thermal insulation layer 2 and the hygroscopic and deodorizing heating and thermal insulation layer 4 are melted and bonded together by hot air.

[0023] Example 2

[0024] Furthermore, multiple holes are provided on the outer aerogel film 1 and the inner aerogel film 3, and the area of ​​the holes is 0.5-10 cm 2 The holes are evenly distributed across the aerogel film, accounting for 8-16% of the unit area, addressing the poor air permeability of the aerogel film. To ensure thermal insulation, the holes in the outer aerogel film 1 and the inner aerogel film 3 are staggered horizontally.

[0025] The far-infrared heating and thermal insulation layer 2 is made of a uniform blend of wool fiber, far-infrared heating fiber, aerogel fiber and ES fiber, with a thickness of 3.5-6.5mm and a square meter weight of 80-120g / m 2 Wool fiber accounts for 50%-70% of the total weight, far-infrared heating fiber accounts for 10%-30%, aerogel fiber accounts for 10%-20%, and ES fiber accounts for 1%-5%. Wool fiber provides basic thermal insulation, while the addition of aerogel fiber enhances this performance. The far-infrared heating fiber enables the wadding to absorb shortwave energy from the environment, causing the body to heat up. After hot air treatment, the ES fiber becomes adhesive, allowing the aerogel film to adhere to the wadding.

[0026] The moisture-absorbing, deodorizing, heating and thermal insulation layer 4 is made of a uniform blend of wool fiber, moisture-absorbing and heating fiber, bamboo charcoal fiber and ES fiber, with a thickness of 3.0-6.0mm and a square meter weight of 60-100g / m 2 Among them, wool fiber accounts for 50%-70%, moisture-absorbing and heat-generating fiber accounts for 10%-30%, bamboo charcoal fiber accounts for 10%-20%, and ES fiber accounts for 1%-5%.

[0027] Hygroscopic, heat-generating fibers absorb sweat and convert the kinetic energy of water molecules into heat, achieving a heating effect. Bamboo charcoal fiber has excellent adsorption properties, effectively absorbing and decomposing odors through its pores. Its excellent hygroscopicity also creates a sense of comfort. Furthermore, the moisture-wicking finish is a cross-linked polymer compound finish. The finish has a solids content of 30% or greater, a pH of 6.0-8.0, and a concentration of 3%-4%. Conventional impregnation is generally used to allow the finish to penetrate the fibers of the odor-absorbing and water-conducting layer. This layer, treated with the moisture-wicking finish, absorbs and transfers sweat produced by the human skin, or moisture between the fabric and the skin, allowing water molecules to be quickly absorbed.

[0028] Example 3

[0029] Furthermore, the outer aerogel film 1 and the inner aerogel film 3 are both inorganic aerogel nanofilms, made of one or more of silicon dioxide, titanium dioxide, aluminum oxide, zirconium oxide, and cerium oxide, and are made by a sol-gel method and a freeze-drying process. The obtained aerogel film has a thickness of 50-400 μm, a porosity of 40%-80%, and a thermal conductivity of 0.012-0.024 W / m*K, and has an excellent thermal insulation effect.

[0030] The wool fiber is 100% washed wool raw material without impurities, white wool cotton, the wool fiber fineness is 1.2-1.7D, the length is 45-65mm, and the density is 1.0-1.4g / cm 3 The wool fibers are treated with low-temperature plasma. The particles in the plasma bombard the surface of the wool fibers with a thickness of 4nm-10nm, breaking the chemical bonds between the molecules on the fiber surface, achieving a descaling effect and improving the shrinkage resistance of the wool fibers. The descaling rate is 0.2%-0.9%. The radio frequency power is 150-200W, which enables the wool fibers to produce more high-energy particles with less damage. The gas used is oxygen with a flow rate of 10-30L / min, which can improve the hydrophilicity of the wool fibers. The contact angle of the treated wool fibers is reduced by 10-40°, and the friction coefficient is 0.2-0.5.

[0031] Example 4

[0032] Furthermore, the far-infrared heating fiber is a far-infrared functional fiber energy storage heating cotton, the fiber fineness is 1.2-1.7D, the length is 25-50mm, and the density is 1.3-1.5g / cm 3 The fiber has a non-circular cross-section and is impregnated with 15%-35% far-infrared ceramic powder or other far-infrared radioactive materials. The particle size is 80nm-10mm. This allows the fiber to absorb short-wave energy and radiate far-infrared radiation. These far-infrared rays resonate with water molecules in human cells, promoting blood circulation and promoting heat generation. Its far-infrared emissivity is greater than 0.6, and the wavelength of the radiated far-infrared radiation is 4-16μm.

[0033] Aerogel fibers are made of organic materials such as polyester, wool, polyamide, etc., with a density of 0.02-0.5g / cm 3 The fiber has a fineness of 1.2-1.7D and a length of 25-50mm. Aerogel fibers are porous nanostructured fibers with a pore size of 50-60 nanometers. Their nano-grid structure makes it difficult for absorbed heat to radiate or conduct away, resulting in a thermal conductivity of 0.015-0.035W / m*K. Due to their low density, aerogel fibers must be wrapped in other fibers to ensure smooth opening.

[0034] ES fiber is an ES composite staple fiber, a two-component core-skin composite fiber composed of PET / PE or PP / PE, with a fiber fineness of 1.5-2.5D and a length of 30-60mm. After the ES fibers in the flakes are treated with hot air, a portion of the cortex melts and acts as a bond, while the rest remains in a fibrous state. Therefore, during the preparation of the flakes, the four-layer structure is stacked in sequence and placed in an electric hot air drying oven, with the outer aerogel film placed on the bottom layer. Hot air is applied at 130-160°C for 1-3 minutes, and gravity is used to melt the ES fibers in the upper layer and bond them to the inner and outer aerogel films in the lower layers, thus achieving the structural design of the flakes without damaging the aerogel film.

[0035] Example 5

[0036] Furthermore, the hygroscopic heat-generating fiber is a hygroscopic heat-generating viscose staple fiber, the fiber fineness is 1.3D-1.5D, the length is 25-50mm, and the density is 1.4-1.6g / cm 3 Viscose fiber adopts a cross-shaped or triangular spinneret design. The fiber forms a cross-shaped or triangular cross-section during the spinning process to increase the specific surface area of ​​the fiber. At the same time, hydrophilic heat-generating masterbatch made of water-soluble powder and functional powder is added during the spinning process. The particle size is 0.2-5mm, the addition amount is 15%-35%, and the fiber regain rate is 15%-25%.

[0037] Bamboo charcoal fiber is a polyester-based bamboo charcoal staple fiber with a fineness of 1.2-1.7D and a length of 30-50mm. It is made from natural bamboo charcoal nanopowder through a melt spinning process and has many excellent properties of bamboo charcoal. The content of bamboo charcoal nanopowder is 4%-13%. The fiber has a hexagonal molecular structure, a hard and fine porous texture, and an air-dry density of 0.8-1.4g / cm 3 The anti-pilling and anti-fuzzing effects are level 4-4.5, and the pH value is 8-9.

[0038] The aerogel fibers in the far-infrared heating and thermal insulation layer 2 are located in the mixed fibers of wool fibers, far-infrared heating fibers and ES fibers in a "dumpling-shaped" structure, and the shape is close to a circular or elliptical structure;

[0039] The bidirectional heat-insulating, moisture-absorbing, deodorizing and warm-keeping wool sheet of the present invention has an outer aerogel film 1 and an inner aerogel film 3 both with excellent thermal insulation performance, with holes on the surface, and its double-layer staggered arrangement design enables it to improve air permeability while ensuring the thermal insulation effect.

[0040] like Figure 2As shown, the far-infrared heating insulation layer 1 contains fibers with far-infrared heating effect. The far-infrared heating fibers absorb short-wave energy 5 in the environment, thereby radiating 4-16μm far-infrared rays 6. These far-infrared rays can resonate with water molecules in human cells, thereby promoting blood circulation and human body heating.

[0041] The moisture-absorbing, odor-resistant, heat-generating, and thermal insulation layer (4) is closest to the skin and contains natural bamboo charcoal fibers, which effectively absorb and decompose odors through their pores. Thanks to the bamboo charcoal fibers' excellent moisture absorption properties and the use of a moisture-wicking finish, they absorb and transfer sweat or moisture between the fabric and the skin (8). The moisture-absorbing, heat-generating fibers convert the absorbed water molecules into heat (9) and release it, providing a heat-generating and warming effect while keeping the garment dry and comfortable.

[0042] While the heat 7 generated by the human body and the heat 9 released by the moisture-absorbing, heating fibers are partially blocked by the inner aerogel film 3, the remaining heat is further insulated by the wool fibers and aerogel fibers in the far-infrared heating and thermal insulation layer 1, as well as the outer aerogel film 1, achieving excellent warmth retention. The four layers of bidirectionally heating, heat-insulating, moisture-absorbing, deodorizing, and warming wool flakes work in pairs, achieving simultaneous bidirectional heat generation and long-lasting warmth.

[0043] Example 6

[0044] The two-way heating, heat-insulating, moisture-absorbing, deodorizing and warm-keeping wool sheet of this embodiment comprises, from top to bottom, an outer aerogel film 1, a far-infrared heating and thermal insulation layer 2, an inner aerogel film 3 and a moisture-absorbing, deodorizing and warm-keeping layer 4, wherein the far-infrared heating and thermal insulation layer 2 and the moisture-absorbing, deodorizing and warm-keeping layer 4 are treated with a needle-punching process, the moisture-absorbing, deodorizing and warm-keeping layer 4 is treated with a moisture-absorbing and perspiration-wicking finishing agent, and the inner aerogel film 3, the far-infrared heating and thermal insulation layer 2, and the moisture-absorbing, deodorizing and warm-keeping layer 4 are melt-bonded together by hot air.

[0045] The outer aerogel film 1 and the inner aerogel film 3 both have an area of ​​1.5 cm 2 The holes are evenly distributed on the aerogel film, and the hole area per unit area accounts for 10%. The holes of the outer aerogel film 1 and the inner aerogel film 3 are staggered in the horizontal direction when placed.

[0046] The far-infrared heating and thermal insulation layer 2 is made of a uniform blend of wool fiber, far-infrared heating fiber, aerogel fiber and ES fiber, with a thickness of 4.5mm and a square meter weight of 95g / m 2 Among them, wool fiber accounts for 60%, far-infrared heating fiber accounts for 20%, aerogel fiber accounts for 15%, and ES fiber accounts for 5%.

[0047] The moisture-absorbing, deodorizing, heating and thermal insulation layer 4 is made of a uniform blend of wool fiber, moisture-absorbing and heating fiber, bamboo charcoal fiber and ES fiber, with a thickness of 3.5mm and a square meter weight of 80g / m 2 Among them, wool fiber accounts for 60%, moisture-absorbing and heat-generating fiber accounts for 20%, bamboo charcoal fiber accounts for 15%, and ES fiber accounts for 5%.

[0048] The aerogel film is made of silicon dioxide through a sol-gel method and a freeze-drying process. The obtained aerogel film has a thickness of 200 μm, a porosity of 60%, and a thermal conductivity of 0.012 W / m*K.

[0049] The wool fiber is 100% washed wool raw material without impurities, white wool cotton, the wool fiber fineness is 1.5D, the length is 50mm, and the density is 1.4g / cm 3 The wool fibers were treated with low-temperature plasma to remove scales, with a descaling rate of 0.5%. The radio frequency power was 150W, the gas used was oxygen, and the flow rate was 10L / min.

[0050] The far-infrared heating fiber is a far-infrared functional fiber energy storage heating cotton with a fiber fineness of 1.7D, a length of 39mm, and a density of 1.5g / cm 3 , having a non-circular cross-sectional shape, is made by adding 15% far-infrared ceramic powder into the fiber by an impregnation method, with a particle size of 80nm and a far-infrared emissivity of 0.7.

[0051] Aerogel fibers are made of wool fibers with a density of 0.1 g / cm 3 The fiber has a fineness of 1.2D and a length of 30 mm; the particle pore size is 50 nanometers and the thermal conductivity is 0.015 W / m*K.

[0052] ES fiber is a composite staple fiber made of PET / PE, with a fiber fineness of 1.5D and a length of 40mm. During the flake preparation process, the four layers are stacked in sequence and placed in an electric hot air drying oven, with the outer aerogel film placed at the bottom layer and subjected to hot air at 140°C for 2 minutes.

[0053] The hygroscopic and heat-generating fiber is a hygroscopic and heat-generating viscose staple fiber with a fiber fineness of 1.4D, a length of 38mm, and a density of 1.5g / cm 3 The viscose fiber adopts a cross-shaped spinneret design, and the fiber forms a cross-shaped cross section during the spinning process. At the same time, hydrophilic heat-generating masterbatch is added during the spinning process. The particle size is 2mm, the addition amount is 22%, and the fiber regain rate is 20%.

[0054] Bamboo charcoal fiber is polyester-based bamboo charcoal short fiber with a fineness of 1.5D and a length of 40mm. It is made from natural bamboo charcoal nanopowder through a melt spinning process. The content of bamboo charcoal nanopowder is 10%, and the air-dry density is 1.1g / cm 3 , the anti-pilling effect is level 4, and the pH value is 8.

[0055] like Figure 3 As shown, the aerogel fibers in the far-infrared heating and thermal insulation layer are located in the wool fibers 10, the mixed fibers of the far-infrared heating fibers and the ES fibers in a "dumpling-shaped" structure, that is, the mixed far-infrared heating fibers, wool fibers and ES fibers 11 are formed, and the shape is close to a circular structure. Every 30g of the mixed fiber raw materials are evenly divided into 6 parts, and each gram of the mixed fibers except the aerogel fibers wraps 0.4g of aerogel fibers.

Claims

1. Two-way heat-insulating, moisture-absorbing, deodorizing and warm wool flakes, characterized by: From top to bottom, the outer aerogel film (1), the far-infrared heating and thermal insulation layer (2), the inner aerogel film (3) and the hygroscopic and deodorizing heating and thermal insulation layer (4) are sequentially arranged. The far-infrared heating and thermal insulation layer (2) and the hygroscopic and deodorizing heating and thermal insulation layer (4) are connected by a needle punching process. The outer aerogel film (1) and the far-infrared heating and thermal insulation layer (2) are melted and bonded together by hot air. The inner aerogel film (3) and the far-infrared heating and thermal insulation layer (2) and the hygroscopic and deodorizing heating and thermal insulation layer (4) are melted and bonded together by hot air.

2. The two-way heat-insulating, moisture-absorbing, deodorizing and warm-keeping wool sheet according to claim 1, characterized in that: The outer aerogel film (1) and the inner aerogel film (3) are both provided with a plurality of holes, and the holes are evenly distributed on the aerogel film. The holes of the outer aerogel film (1) and the inner aerogel film (3) are staggered in the horizontal direction.

3. The two-way heat-insulating, moisture-absorbing, deodorizing and warm-keeping wool sheet according to claim 1, characterized in that: The far-infrared heating and heat-insulating layer (2) is formed by uniformly blending wool fiber, far-infrared heating fiber, aerogel fiber and ES fiber. The far-infrared heating and heat-insulating layer (2) has a thickness of 3.5-6.5 mm and a grammage per square meter of 80-120 g / m 2 .

4. The two-way heat-insulating, moisture-absorbing, deodorizing and warm-keeping wool sheet according to claim 3, characterized in that: The far-infrared heating fiber has a fineness of 1.2-1.7D, a length of 25-50 mm, and a density of 1.3-1.5 g / cm 3 The aerogel fiber is a porous nanostructured aerogel fiber with a fineness of 1.2-1.7D and a density of 0.02-0.5g / cm 3 , length is 25-50mm.

5. The two-way heat-insulating, moisture-absorbing, deodorizing and warm-keeping wool sheet according to claim 1, characterized in that: The moisture-absorbing, deodorizing, heating and heat-insulating layer (4) is made of a uniform blend of wool fiber, moisture-absorbing and heating fiber, bamboo charcoal fiber and ES fiber, with a thickness of 3.0-6.0 mm and a grammage per square meter of 60-100 g / m 2 .

6. The two-way heat-generating, heat-insulating, moisture-absorbing, deodorizing and warm-keeping wool sheet according to claim 3 or 5, characterized in that: The wool fiber has a fineness of 1.2-1.7D, a length of 45-65mm, and a density of 1.0-1.4g / cm 3 ; The ES fiber has a fineness of 1.5-2.5D and a length of 30-60mm.

7. The two-way heat-insulating, moisture-absorbing, deodorizing and warm-keeping wool sheet according to claim 5, characterized in that: The hygroscopic and heat-generating fiber is a hygroscopic and heat-generating viscose staple fiber, and the fineness of the hygroscopic and heat-generating fiber is 1.3D-1.5D, the length is 25-50mm, and the density is 1.4-1.6g / cm 3 The bamboo charcoal fiber is a polyester-based bamboo charcoal short fiber, the fineness of the bamboo charcoal fiber is 1.2-1.7D, and the length is 30-50mm.

8. The two-way heat-insulating, moisture-absorbing, deodorizing and warm-keeping wool sheet according to claim 1, characterized in that: The outer aerogel film (1) and the inner aerogel film (3) are both inorganic aerogel nanofilms. The thickness of the outer aerogel film (1) and the inner aerogel film (3) are both 50-400 μm, and the porosity is both 40%-80%.

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