Warm-keeping wool wool flocculus with double-effect heat energy conversion and preparation method of wool wool flocculus

Abstract

The warm-keeping wool flock flocculus comprises a photo-thermal conversion layer, a honeycomb bionic microstructure heat preservation layer and a damp-heat conversion layer, the honeycomb bionic microstructure heat preservation layer is a middle layer, and the photo-thermal conversion layer and the damp-heat conversion layer are arranged on the two sides of the honeycomb bionic microstructure heat preservation layer respectively; the content of the photothermal conversion layer is 40%-50%, the content of the honeycomb bionic microstructure thermal insulation layer is 10%-30%, and the content of the damp-heat conversion layer is 30%-50 The invention further discloses a preparation method of the warm-keeping wool wool flocculus with the double-effect heat energy conversion function. The warm-keeping wool flock flocculus with the double-effect heat energy conversion function can effectively achieve the photo-thermal conversion function, the heat insulation function and the moisture absorption and heating function, and the problem that a traditional warm-keeping material is limited in the aspects of the heat insulation performance and the moisture and heat adjusting function is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of thermal insulation materials, relates to a thermal insulation wool flannel with double-effect heat energy conversion, and also relates to a preparation method of the thermal insulation wool flannel with double-effect heat energy conversion. Background Art

[0002] Traditional thermal insulation materials have limitations in terms of thermal insulation and heat and moisture regulation, often failing to meet consumer demands for comfort and versatility. With technological advancements, market demand is increasing for high-performance materials that effectively combine light-to-heat conversion, thermal insulation, and heat and moisture regulation. Therefore, developing new thermal insulation materials with dual-effect thermal energy conversion capabilities is particularly important to enhance overall product performance and user experience. Summary of the Invention

[0003] The purpose of the present invention is to provide a wool flannel with dual-effect heat energy conversion and warmth-keeping function, which can effectively realize light-heat conversion, heat insulation and moisture absorption and heating functions, and solve the problem that traditional thermal insulation materials have limitations in thermal insulation performance and moisture and heat regulation function.

[0004] The second object of the present invention is to provide a method for preparing the above-mentioned wool flannel with double-effect heat energy conversion and warmth retention.

[0005] The first technical solution adopted by the present invention is a warm wool flannel with dual-effect heat energy conversion, comprising a light-heat conversion layer, a honeycomb bionic microstructure insulation layer and a moisture-heat conversion layer. The honeycomb bionic microstructure insulation layer is the middle layer, and the light-heat conversion layer and the moisture-heat conversion layer are on both sides of the honeycomb bionic microstructure insulation layer. Calculated by total mass percentage, the light-to-heat conversion layer is 40%~50%, the honeycomb bionic microstructure insulation layer is 10%~30%, and the moisture-heat conversion layer is 30%~50%.

[0006] The present invention is also characterized in that: The light-to-heat conversion layer has a gram weight of 80-120 g / m² and a thickness of 2-5 mm. It is composed of three layers of flakes, with the middle layer being a far-infrared heating layer, and the far-infrared heating layer being flanked by an upper lightweight wool fiber layer and a lower lightweight wool fiber layer. The upper lightweight wool fiber layer has a gram weight of 20-30 g / m² and a thickness of 1-2 mm. The upper lightweight wool fiber layer is made of wool fibers modified with titanium dioxide particles. The selected wool fibers have a diameter of 20-30 μm and a length of 40-60 mm. The selected titanium dioxide particles have a particle size of 20-100 nm. The specifications and preparation method of the lower lightweight wool fiber layer are the same as those of the upper lightweight wool fiber layer. The far-infrared heating layer has a gram weight of 70-100 g / m² and a thickness of 2-4mm. The far-infrared heating layer is a polyester far-infrared heating fiber prepared by adding 5%-10% ceramic far-infrared heating material to polyester fiber with a diameter of 10-20μm and a length of 30-60mm. The polyester far-infrared heating fiber is one or both of polyester far-infrared fiber and three-dimensional curled far-infrared fiber; the ceramic far-infrared heating material is ZrO2, MgO or Al2O3 nanopowder.

[0007] The honeycomb bionic microstructure insulation layer has a gram weight of 30-70g / m 2 , thickness is 2-5mm; The honeycomb bionic microstructure thermal insulation layer is made of wool fibers with a diameter of 20-30 μm and a fiber length of 40-60 mm. The wool fibers are opened, carded, and laid to obtain a single layer of wool flakes. The single layer of wool flakes is then cut in sequence using a honeycomb structure mold. Finally, a press is used to cut the single layer of wool flakes to form a hollow regular hexagonal shell. The regular hexagonal shell units are arranged continuously in a cycle in the order of "N in odd rows, N-1 in even rows", where N ≥ 3, thereby obtaining a honeycomb bionic microstructure thermal insulation layer.

[0008] The honeycomb-like structure mold is made of lightweight polymer materials such as polystyrene or polyester.

[0009] The weight of the heat-moisture conversion layer is 80-120 g / m² and the thickness is 2-5 mm; The moisture-heat conversion layer is made of a uniform mixture of hydrophilic modified wool fibers and moisture-absorbing and heating fibers. By mass percentage, the hydrophilic modified wool fibers account for 60%-80%, and the moisture-absorbing and heating fibers account for 20%-40%; The hydrophilic modified wool fiber has a diameter of 20-35 μm and a length of 40-60 mm. The hydrophilic modified wool fiber is obtained by using wool fibers with a diameter of 20-30 μm and a length of 40-60 mm as a base material and modified with a hydrophilic agent. The moisture-absorbing and heat-generating fiber is a heat-generating polyacrylonitrile fiber.

[0010] The second technical solution adopted by the present invention is a method for preparing a warm wool flannel with dual-effect heat energy conversion, and the specific steps are as follows: S1. Select polyester far-infrared heating fiber and wool fiber, modify the wool fiber with titanium dioxide, and then composite needle-punch in the order of "light wool fiber layer-far-infrared heating layer-light wool fiber layer" to obtain a light-to-heat conversion layer; S2. Select 100% wool fiber as the base material, cut it through a honeycomb structure-like mold to form a hollow regular hexagonal shell, and obtain a honeycomb bionic microstructure insulation layer; S3, selecting wool fibers and performing hydrophilic finishing on them, and then mixing the hydrophilic finished wool fibers with moisture-absorbing and heat-generating fibers to obtain a moisture-heat conversion layer; S4. The prepared light-to-heat conversion layer, honeycomb bionic microstructure insulation layer and moisture-heat conversion layer are stacked in order of top, middle and bottom, and the three layers of fiber mesh are fixed by needle punching using a needle punching machine to obtain a warm wool flannel with dual-effect heat energy conversion.

[0011] The present invention is also characterized in that: The specific method of S1 is: S1.1. Material selection: Select polyester far-infrared heating fiber, wool fiber, and titanium dioxide with a particle size of 20-100 nm respectively; S1.2. Wool fiber modification: Titanium dioxide nanoparticles and polyurethane emulsion are dissolved in water to form an impregnation solution, wherein the concentration of titanium dioxide nanoparticles in the impregnation solution is 3%-6%, and the concentration of polyurethane emulsion is 5%-10%; Completely immerse the wool fiber in the impregnation solution and react for 60-120 minutes at a reaction temperature of 30-60°C and a bath ratio of 1:5-10; Curing and drying treatment: Take out the wool fibers and use rollers to squeeze out excess water from the wool fibers after the reaction. The roller pressure is 2-5kg / cm². Then, heat treat the treated wool fibers at 100-130°C for 20-60 minutes to obtain a lightweight wool fiber layer. S1.3, Prefabricated single-layer flakes: Fiber opening: The polyester far-infrared heating fiber group and the wool fiber group modified with titanium dioxide are opened separately by an opening machine to obtain loose fibers; Carding to form a web: The loose polyester far-infrared heating fiber and modified wool fiber are combed by a carding machine, and then air-laid by an air-laid machine to form a web, respectively, to obtain a lightweight wool fiber layer with a gram weight of 20-30g / m² and a thickness of 1-2mm, and a far-infrared heating layer with a gram weight of 70-100g / m² and a thickness of 2-4mm; Layered laying: The obtained lightweight wool fiber layer and far-infrared heating layer are stacked in sequence according to the upper lightweight wool fiber layer, the middle far-infrared heating layer, and the lower lightweight wool fiber layer to form a light-to-heat conversion layer with excellent light-to-heat conversion efficiency.

[0012] The specific steps of S2 are: S2.1. Material selection: Select 100% wool fiber as the base material; S2.2, Prefabricated single-layer flakes: Fiber opening: The selected wool fiber mass is opened by an opening machine to obtain dispersed wool fibers; Carding into web: The loosened wool fibers are combed by a carding machine and then passed through an air-laid machine to form a web; Cross-lapping: A single-layer fiber web is cross-lapped to obtain a weight of 100-150g / m 2 , un-needled single-layer flakes with a thickness of 3-6 mm; Introducing bionic honeycomb structure: the unneedled single-layer flakes obtained after cross-laying are sequentially passed through a honeycomb structure mold and cut by a press. The flakes are cut through the honeycomb structure mold to form a hollow regular hexagonal shell. Each unit provides an isolated air layer, and the final weight is 30-70g / m 2 , honeycomb bionic microstructure insulation layer with a thickness of 2-5mm.

[0013] The specific methods of S3 are: S3.1. Preparation of hydrophilic wool fiber Material selection: Select partially descaled wool fiber as the base material, hydrophilic softener and polyvinyl alcohol; Solution preparation: Weigh a portion of descaled wool fiber as A and a hydrophilic finishing agent as B, and set the bath ratio to 1:4-10. Prepare a 20-40g / L hydrophilic finishing agent solution based on the bath ratio, which is called solution C. Disperse polyvinyl alcohol in solution C at a concentration of 1%-10%, and stir evenly to prepare solution D. Hydrophilic treatment: completely immerse some descaled wool fibers in solution D for 10-30 minutes, and set the temperature to 15-30°C; Curing and drying treatment: Take out the wool sample and use rollers to press out excess moisture from the fiber at a roller pressure of 2-5kg / cm²; place the wool sample at a temperature of 40-70°C for curing treatment for 30-60 minutes; place the cured wool fiber in a drying equipment, control the temperature at 30-50°C, and carry out low-temperature drying for 1-2 hours to obtain hydrophilic modified wool fiber; S3.2. Preparation of Moisture-Heat Conversion Layer Material selection: Weigh the moisture-absorbing and heat-generating fiber and the hydrophilic modified wool fiber respectively; Evenly mix: Evenly mix the selected moisture-absorbing and heat-generating fibers and hydrophilic modified wool fibers to improve the evenness of the blended flakes; Prefabricated single-layer flocculants: The evenly mixed hygroscopic and heat-generating fibers and hydrophilic modified wool fibers are opened by an opener to obtain loose fibers; the loose mixed fibers obtained after opening are combed by a carding machine, and then air-laid by an air-laying machine; the single-layer fiber web is cross-lapped to form a non-needled heat-conversion fiber layer with a weight of 80-120g / m² and a thickness of 2-5mm.

[0014] The beneficial effects of the present invention are: The present invention provides a warm wool flannel with dual-effect thermal energy conversion, which can effectively realize light-heat conversion, thermal insulation and moisture absorption and heating functions. By introducing heat-conversion fibers, it solves the limitations of traditional thermal insulation materials in thermal insulation performance and moisture-heat regulation functions, and meets consumers' needs for functional fabrics. At the same time, it innovatively introduces a bionic thermal microstructure. Through the introduction of the simulated honeycomb structure, a large amount of static air storage space is provided for the flannel, further improving the thermal insulation of the flannel. The upper and lower layers of light-heat and moisture-heat dual-efficiency conversion structure design and the intervention of the middle thermal insulation layer enable the flannel to achieve excellent thermal insulation performance as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the warm wool flannel of the present invention; Figure 2 This is a schematic diagram of the structure of the light-to-heat conversion layer of the warm wool flannel of the present invention; Figure 3 This is a schematic diagram of the planar structure of the honeycomb bionic microstructure mold of the warm wool flannel of the present invention; Figure 4 This is a schematic diagram of the honeycomb bionic microstructure mold unit structure of the warm wool flannel of the present invention; Figure 5 It is a schematic diagram of the structure of the honeycomb bionic microstructure insulation layer of the warm wool flannel of the present invention.

[0016] In the figure, 1. Light-to-heat conversion layer, 2. Honeycomb bionic microstructure insulation layer, 3. Moisture-heat conversion layer, 4. Upper lightweight wool fiber layer, 5. Far-infrared heating layer, 6. Upper lightweight wool fiber layer. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Warm wool flannel with double-effect heat energy conversion, such as Figure 1 As shown, it comprises a light-to-heat conversion layer 1, a honeycomb biomimetic microstructure insulation layer 2, and a moisture-heat conversion layer 3. Honeycomb biomimetic microstructure insulation layer 2 serves as the middle layer, flanked by light-to-heat conversion layer 1 and moisture-heat conversion layer 3. By weight, light-to-heat conversion layer 1 accounts for 40%-50%, honeycomb biomimetic microstructure insulation layer 2 for 10%-30%, and moisture-heat conversion layer 3 for 30%-50%. This three-layer design achieves a highly efficient combination of light-to-heat conversion, thermal insulation, and moisture-heat functions, enhancing the warmth performance of the wadding. It also achieves excellent dual-effect heat energy conversion and biomimetic thermal insulation, improving the overall performance of the wool wadding.

[0019] Furthermore, the light-to-heat conversion layer 1 has a gram weight of 80-120 g / m² and a thickness of 2-5 mm; Figure 2As shown, the light-to-heat conversion layer 1 is composed of three layers of flakes, the middle layer is a far-infrared heating layer 5, and the far-infrared heating layer 5 is flanked by an upper lightweight wool fiber layer 4 and a lower lightweight wool fiber layer 6; The upper lightweight wool fiber layer 4 has a weight of 20-30 g / m² and a thickness of 1-2 mm. The upper lightweight wool fiber layer 4 is made of wool fibers modified with titanium dioxide particles. The diameter of the wool fibers is 20-30 μm and the length is 40-60 mm. The particle size of the titanium dioxide particles is 20-100 nm. The specifications and preparation method of the lower lightweight wool fiber layer 6 are the same as those of the upper lightweight wool fiber layer 4. The far-infrared heating layer 5 weighs 70-100 g / m² and has a thickness of 2-4 mm. The far-infrared heating layer 5 is a polyester far-infrared heating fiber prepared by adding 5%-10% of ceramic far-infrared heating material to polyester fiber with a diameter of 10-20 μm and a length of 30-60 mm. The polyester far-infrared heating fiber is one or both of polyester far-infrared fiber and three-dimensional curled far-infrared fiber; the ceramic far-infrared heating material is ZrO2, MgO or Al2O3 nanopowder.

[0020] The photothermal conversion layer 1 is prepared by merging three layers. Through this three-layer composite structure, the upper lightweight wool fiber layer 4 and the lower lightweight wool fiber layer 6, while ensuring basic warmth retention, at the same time introduce a titanium dioxide treatment process to enhance the photothermal conversion effect, acting on the far-infrared heating layer 5 prepared by the middle layer of polyester far-infrared heating fiber, thereby improving the photothermal conversion and the warmth retention performance of the photothermal conversion layer 1. This layer has excellent photothermal conversion efficiency, can effectively absorb heat energy and convert it into far-infrared rays with a wavelength of 4-14μm for release, and can effectively increase the temperature of the human body's surrounding environment by 2-5℃ within 0-40min.

[0021] Furthermore, the honeycomb bionic microstructure insulation layer weighs 30-70g / m2. 2 , with a thickness of 2-5mm; the honeycomb bionic microstructure insulation layer 2 is made of wool fibers with a diameter of 20-30μm and a fiber length of 40-60mm, which are opened, combed, and laid to obtain a single-layer wool flake. The single-layer wool flake obtained after laying has a gram weight of 100-150g / m 2 , with a thickness of 3-6mm. The single-layer wool batting is then cut sequentially through a honeycomb-like structure mold, using a lightweight polymer material such as polystyrene or polyester to prepare the honeycomb-like structure mold. Finally, a press is used to cut the mold to form a hollowed-out regular hexagonal shell. The regular hexagonal shell units are arranged continuously in a cyclical pattern of "N in odd rows, N-1 in even rows," where N ≥ 3, thus forming a honeycomb biomimetic microstructure insulation layer 2. By introducing the biomimetic honeycomb structure, honeycomb units are formed in the wool batting, each providing an insulating air layer, further enhancing the thermal insulation effect.

[0022] The specifications of the honeycomb structure mold can be formulated according to actual conditions. In this application, Figure 3 As shown, a honeycomb structure mold with a length of 100cm-120cm and a width of 80cm-120cm can be selected to cut the single-layer wool flakes, and the honeycomb structure unit in this mold is a regular hexagonal shell with a length of 5-10cm, a width of 1-3cm, and a height of 1-3cm. Figure 4 As shown, the honeycomb structure mold is used to cut a single layer of wool flakes, so that a honeycomb bionic microstructure insulation layer with a length of 100-120 cm, a width of 80-120 cm, and a height of 2-5 mm can be obtained. Figure 5 As shown, the design of 2-5mm height ensures the stability of the hollow structure formed in the subsequent needling process and increases the standing strength of the honeycomb bionic microstructure insulation layer.

[0023] The design of the width and length of the honeycomb structure hexagonal shell unit in the honeycomb bionic microstructure insulation layer 2 ensures the formation of vacant units with stiffness, so as to ensure that the vacant spaces can be preserved in subsequent processes to achieve the storage of still air and improve the overall thermal insulation performance of the flakes.

[0024] Furthermore, the moisture-heat conversion layer 3 has a gram weight of 80-120 g / m² and a thickness of 2-5 mm; the moisture-heat conversion layer 3 is formed by a uniform mixture of hydrophilic modified wool fibers and moisture-absorbing and heat-generating fibers. By weight percentage, the hydrophilic modified wool fibers account for 60%-80%, and the moisture-absorbing and heat-generating fibers account for 20%-40%. Through the synergistic effect between the fibers, the moisture-heat conversion efficiency and the warmth retention effect are improved.

[0025] The hydrophilic modified wool fiber has a diameter of 20-35 μm and a length of 40-60 mm. The hydrophilic modified wool fiber is obtained by modifying a wool fiber with a diameter of 20-30 μm and a length of 40-60 mm as a base material with a hydrophilic agent. The hygroscopic and heat-generating fiber is a heat-generating polyacrylonitrile fiber. In the present invention, Yirebao fiber or WARMWINTER hygroscopic and heat-generating fiber can be selected.

[0026] When absorbing moisture from the human body, the kinetic energy of the water molecules decreases and is converted into heat energy, causing the temperature to rise by 3-7°C within 0-30 minutes, thereby increasing the temperature of the environment around the human body.

[0027] The thermal insulation wool plush flakes with dual-effect heat energy conversion in this application solve the limitations of traditional thermal insulation materials in thermal insulation performance and moisture and heat regulation functions through heat-inducing conversion fibers, and meet consumers' needs for functional fabrics; at the same time, it innovatively introduces bionic thermal insulation microstructures and the introduction of honeycomb structures to provide a large amount of still air storage space for the flakes, further improving the warmth retention of the flakes; the upper and lower layers of light-heat and moisture-heat dual-effect conversion structure design and the intervention of the middle insulation layer enable the flakes to achieve excellent warmth retention performance as a whole.

[0028] The preparation method of the above-mentioned warm wool flannel with dual-effect heat energy conversion comprises the following specific steps: S1. Preparation of the light-to-heat conversion layer: Select polyester far-infrared heating fiber and wool fiber, modify the wool fiber with titanium dioxide, and then perform composite needle punching in the order of "light wool fiber layer-far-infrared heating layer-light wool fiber layer" to obtain the light-to-heat conversion layer. The specific method is as follows: S1.1. Material selection: Polyester far-infrared heating fiber and wool fiber are selected as the base material, titanium dioxide with a particle size of 20-100nm is used as the material to enhance the photothermal conversion efficiency, and polyurethane emulsion is used as the titanium dioxide stabilizer. The materials should also be waterproof. S1.2. Wool fiber modification: Titanium dioxide nanoparticles and polyurethane emulsion are dissolved in water to form an impregnation solution, wherein the concentration of titanium dioxide nanoparticles in the impregnation solution is 3%-6%, and the concentration of polyurethane emulsion is 5%-10%; Completely immerse the wool fiber in the impregnation solution and react for 60-120 minutes at a reaction temperature of 30-60°C and a bath ratio of 1:5-10; Curing and drying treatment: Remove the wool fibers and use rollers to squeeze out excess water from the reacted wool fibers at a roller pressure of 2-5kg / cm². The treated wool fibers are then heat-treated at 100-130°C for 20-60 minutes to ensure the bonding of titanium dioxide with the wool fibers and promote the photothermal properties of titanium dioxide, thus obtaining a lightweight wool fiber layer. S1.3, Prefabricated single-layer flakes: Fiber opening: The polyester far-infrared heating fiber group and the wool fiber group modified with titanium dioxide are opened separately by an opening machine to obtain loose fibers; Carding to form a web: The loose polyester far-infrared heating fiber and modified wool fiber are carded by a carding machine, and then air-laid by an air-laid machine to form a web, respectively, to obtain a lightweight wool fiber layer with a gram weight of 20-30 g / m² and a thickness of 1-2 mm, and a far-infrared heating layer 5 with a gram weight of 70-100 g / m² and a thickness of 2-4 mm; Layered laying: The obtained lightweight wool fiber layer and far-infrared heating layer 5 are stacked in sequence according to the upper lightweight wool fiber layer 4, the middle far-infrared heating layer 5, and the lower lightweight wool fiber layer 6 to form a light-to-heat conversion layer 1 with excellent light-to-heat conversion efficiency.

[0029] S2. Preparation of honeycomb bionic microstructure insulation layer: 100% wool fiber is selected as the base material, and cut through a honeycomb structure-like mold to form a hollow regular hexagonal shell to obtain the honeycomb bionic microstructure insulation layer. The specific steps are as follows: S2.1. Material selection: Select 100% wool fiber as the base material; S2.2, Prefabricated single-layer flakes: Fiber opening: The selected wool fiber mass is opened by an opening machine to obtain dispersed wool fibers; Carding into web: The loosened wool fibers are combed by a carding machine and then passed through an air-laid machine to form a web; Cross-lapping: A single-layer fiber web is cross-lapped to obtain a weight of 100-150g / m 2 , un-needled single-layer flakes with a thickness of 3-6 mm; Introducing bionic honeycomb structure: the unneedled single-layer flakes obtained after cross-laying are sequentially passed through a honeycomb structure mold and cut by a press. The flakes are cut through the honeycomb structure mold to form a hollow regular hexagonal shell. Each unit provides an isolated air layer, and the final weight is 30-70g / m 2 , the thickness of the honeycomb bionic microstructure insulation layer 2 is 2-5mm.

[0030] S3. Preparation of a moisture-heat conversion layer: Wool fibers are selected and subjected to hydrophilic finishing, and then the hydrophilic finished wool fibers are mixed with moisture-absorbing and heat-generating fibers to obtain a moisture-heat conversion layer. The specific method is as follows: S3.1. Preparation of hydrophilic wool fiber Material selection: Select partially descaled wool fibers as the base material, hydrophilic softener and polyvinyl alcohol. The hydrophilic agent can be a hydrophilic finishing agent with an effective substance concentration of 30% as the wool hydrophilic treatment agent, and polyvinyl alcohol as the reinforcing agent. Solution preparation: Weigh a portion of descaled wool fiber as A and a hydrophilic finishing agent as B, and set the bath ratio to 1:4-10. Prepare a 20-40g / L hydrophilic finishing agent solution based on the bath ratio, which is called solution C. Disperse polyvinyl alcohol in solution C at a concentration of 1%-10%, and stir evenly to prepare solution D. Hydrophilic treatment: completely immerse some descaled wool fibers in solution D for 10-30 minutes, and set the temperature to 15-30°C; Curing and drying treatment: Take out the wool sample and use rollers to press out excess moisture from the fiber at a roller pressure of 2-5kg / cm²; place the wool sample at a temperature of 40-70°C for curing treatment for 30-60 minutes; place the cured wool fiber in a drying equipment, control the temperature at 30-50°C, and carry out low-temperature drying for 1-2 hours to obtain hydrophilic modified wool fiber; S3.2. Preparation of Moisture-Heat Conversion Layer Material selection: Weigh the moisture-absorbing and heat-generating fiber and the hydrophilic modified wool fiber respectively; Evenly mix: Evenly mix the selected moisture-absorbing and heat-generating fibers and hydrophilic modified wool fibers to improve the evenness of the blended flakes; Prefabricated single-layer flocculants: The evenly mixed hygroscopic and heat-generating fibers and hydrophilic modified wool fibers are opened by an opener to obtain loose fibers; the loose mixed fibers obtained after opening are combed by a carding machine, and then air-laid by an air-laying machine; the single-layer fiber web is cross-lapped to form a non-needled heat-conversion fiber layer with a weight of 80-120g / m² and a thickness of 2-5mm.

[0031] S4. Needle punching mechanism composite needle punching three-layer fiber layer: the prepared light-heat conversion layer, honeycomb bionic microstructure insulation layer and moisture-heat conversion layer are stacked in order of top, middle and bottom, and the three-layer fiber mesh is fixed by needle punching through a needle punching machine to obtain a warm wool flannel sheet with dual-effect heat energy conversion.

[0032] Example 1 100g of wool fiber with a diameter of 20μm and a length of 55mm and 30g of polyester far-infrared heating fiber with a diameter of 15μm and a length of 52mm were selected as the base material, wherein the polyester far-infrared heating fiber was made by adding 5% ZrO2 nanopowder to polyester far-infrared heating fiber, and titanium dioxide with a particle size of 80nm was used as a material to enhance the light-to-heat conversion efficiency, to prepare a light-to-heat conversion layer 1 with a gram weight of 120g / m² and a thickness of 5mm; 150g of wool fiber with a diameter of 20μm and a length of 55mm was selected as the base material. In the process of preparing the flakes, a honeycomb structure was introduced to prepare a flake with a gram weight of 65g / m 2 , a honeycomb bionic microstructure insulation layer 2 with a thickness of 4 mm; Wool fibers with a diameter of 20 μm and a length of 55 mm were selected and treated with a hydrophilic agent to obtain hydrophilic treated wool fibers with a diameter of 22 μm and a length of 55 mm. 60 g of hydrophilic wool fibers were evenly mixed with 40 g of WARMWINTER moisture-absorbing and heat-generating fibers (produced by Shanghai Qiwei Textile Technology Co., Ltd.) at a weight ratio of 6:4 to prepare a hydrophilic wool fiber with a weight of 90 g / m 2 , a moisture-heat conversion layer 3 with a thickness of 3mm.

[0033] The specific preparation steps of the light-heat conversion layer, the honeycomb bionic microstructure insulation layer and the moisture-heat conversion layer are as follows: (1) Photothermal conversion layer: First, the wool fibers are pre-treated with titanium dioxide nanomaterials to improve the photothermal conversion efficiency. Then, the wool fiber clusters treated with titanium dioxide and the polyester far-infrared heating fiber clusters are opened respectively. The opened fiber bundles are sent to a carding machine for combing. After the fiber bundles are combed into a single fiber state, they are input into an airflow laying machine for airflow netting to form a fiber net with three-dimensional random arrangement of fibers. Finally, an upper lightweight wool fiber layer 4, a mid-to-far infrared heating layer 5, and a lower lightweight wool fiber layer 6 are obtained respectively; Among them, the specific steps of modifying wool fibers by titanium dioxide treatment are as follows: select 100g wool fibers as the substrate, the water-bath ratio is 1:5, add 3% titanium dioxide powder as a material to enhance the photothermal conversion efficiency, and 5% (w / w) polyurethane emulsion as a titanium dioxide stabilizer with certain waterproof properties; dissolve titanium dioxide nanoparticles and polyurethane emulsion in water to form an impregnation solution to prepare a mixed solution A; fully immerse the wool fibers in solution A at a temperature of 50°C for 80 minutes; take out the wool sample, and use a roller pressure of 2kg / cm² to press out excess water in the fiber; then heat-treat the treated wool fibers at 120°C for 50 minutes to ensure the combination of titanium dioxide and wool fibers, while promoting the photothermal properties of titanium dioxide.

[0034] (2) Honeycomb bionic microstructure insulation layer: The wool fiber group is opened and the opened fiber bundle is sent to the carding machine for combing. After the fiber bundle is combed into a single fiber state, it is input into the airflow laying machine for airflow netting to form a three-dimensional randomly arranged fiber net with a gram weight of 100g / m 2 , with a thickness of 4 mm, and then the laid fiber web is sequentially passed through the imitation honeycomb structure mold, wherein the imitation honeycomb structure mold is a regular hexagonal shell with a length of 5 cm, a width of 2 cm, and a height of 2 cm. The regular hexagonal shell units are arranged in a cycle of N in the first row, N-1 in the second row, N in the third row, N-1 in the fourth row... to obtain a imitation honeycomb structure mold with a length of 100 cm and a width of 80 cm.

[0035] Then it is cut by a press to form hollow honeycomb units in the wool flakes. Each unit provides an isolated air layer, resulting in a length of 100 cm, a width of 80 cm, a height of 4 mm, and a gram weight of 65 g / m 2 Honeycomb bionic microstructure insulation layer.

[0036] (3) Moisture-heat conversion layer 3: hydrophilic treatment process for wool fibers: select wool as the base material, select TYW-129 hydrophilic softener (produced by Dongguan Taiyang New Materials Technology Co., Ltd.) with an effective substance concentration of 30% as the wool hydrophilic treatment reagent, and polyvinyl alcohol (PVA) as the reinforcing agent; weigh the wool to 100g, set the bath ratio to 1:5, prepare 25g / L hydrophilic finishing agent solution, disperse polyvinyl alcohol in the hydrophilic finishing agent solution at 3%, and stir evenly to prepare a mixed solution; completely immerse the wool base material in the mixed solution, set the temperature to 30℃, and the time to 25min; take out the treated wool sample, and use a roller pressure of 2kg / cm² to press out excess moisture in the fiber; place the wool sample at 40℃ for curing treatment for 30min to ensure that polyvinyl alcohol and the hydrophilic finishing agent are fully combined; put the cured wool fiber into the drying equipment, control the temperature at 30°C, and perform low-temperature drying for 2 hours; 60 g of hydrophilically treated wool fibers and 40 g of WARMWINTER moisture-absorbing and heat-generating fibers are uniformly mixed, the mixed fiber clusters are loosened, and the loosened fiber bundles are fed into a carding machine for combing. After the fiber bundles are combed into a single fiber state, they are fed into an air-laid machine for air-laying to form a three-dimensional randomly arranged fiber web, thereby obtaining a moisture-heat conversion layer 3.

[0037] Finally, the three-layer fiber web is needle-punched from top to bottom to form the light-heat conversion layer 1, the honeycomb bionic microstructure insulation layer 2, and the moisture-heat conversion layer 3, and the weight of the fiber web is 275g / m 2 , the double-effect heat energy conversion warm wool velvet flakes with a thickness of 10mm achieve excellent double-effect heat energy conversion and bionic insulation effects.

[0038] Example 2 100g of wool fiber with a diameter of 30μm and a length of 50mm and 30g of polyester far-infrared heating fiber with a diameter of 20μm and a length of 60mm were selected as the base material. The polyester far-infrared heating fiber was made of three-dimensional curled far-infrared fiber with 8% MgO nanopowder added. Titanium dioxide with a particle size of 50nm was used as a material to enhance the photothermal conversion efficiency. A photothermal conversion layer 1 with a gram weight of 100g / m² and a thickness of 3mm was prepared. 150g of wool fiber with a diameter of 30μm and a length of 50mm was selected as the base material. In the process of preparing the flakes, a honeycomb structure was introduced to prepare a flake with a gram weight of 70g / m 2 , a honeycomb bionic microstructure insulation layer 2 with a thickness of 5 mm; Wool fibers with a diameter of 30 μm and a length of 51 mm were selected and treated with a hydrophilic agent to obtain hydrophilic treated wool fibers with a diameter of 31 μm and a length of 51 mm. 80 g of hydrophilic wool fibers were evenly mixed with 20 g of Yirebao fibers (produced by Shanghai Zhengjia Milk Silk Technology Co., Ltd.) at a weight ratio of 8:2 to prepare a fiber with a weight of 80 g / m 2 , a moisture-heat conversion layer 3 with a thickness of 2 mm.

[0039] The specific preparation steps of the light-heat conversion layer, the honeycomb bionic microstructure insulation layer and the moisture-heat conversion layer are as follows: (1) Photothermal conversion layer: First, the wool fibers are pre-treated with titanium dioxide nanomaterials to improve the photothermal conversion efficiency. Then, the wool fiber clusters treated with titanium dioxide and the polyester far-infrared heating fiber clusters are opened respectively. The opened fiber bundles are sent to a carding machine for combing. After the fiber bundles are combed into a single fiber state, they are input into an airflow laying machine for airflow netting to form a fiber net with three-dimensional random arrangement of fibers. Finally, an upper lightweight wool fiber layer 4, a mid-to-far infrared heating layer 5, and a lower lightweight wool fiber layer 6 are obtained respectively; Among them, the specific steps of modifying wool fibers by titanium dioxide treatment are as follows: select 100g wool fibers as the substrate, the water bath ratio is 1:10, add 6% titanium dioxide powder as a material to enhance the photothermal conversion efficiency, and 8% (w / w) polyurethane emulsion as a titanium dioxide stabilizer with waterproof properties; dissolve titanium dioxide nanoparticles and polyurethane emulsion in water to form an impregnation solution to prepare a mixed solution A; fully immerse the wool fibers in solution A at a temperature of 30°C for 120 minutes; take out the wool sample, and use a roller pressure of 5kg / cm² to press out excess water in the fiber; then heat-treat the treated wool fibers at 100°C for 60 minutes to ensure the bonding of titanium dioxide and wool fibers, while promoting the photothermal properties of titanium dioxide.

[0040] (2) Honeycomb bionic microstructure insulation layer: The wool fiber group is opened and the opened fiber bundles are sent to the carding machine for combing. After the fiber bundles are combed into a single fiber state, they are input into the airflow laying machine for airflow netting to form a three-dimensional randomly arranged fiber net with a gram weight of 150g / m 2 , with a thickness of 6 mm, and then the laid fiber web is sequentially passed through the imitation honeycomb structure mold, wherein the imitation honeycomb structure mold is a regular hexagonal shell with a length of 8 cm, a width of 3 cm, and a height of 3 cm. The regular hexagonal shell units are arranged in a cycle of N in the first row, N-1 in the second row, N in the third row, N-1 in the fourth row... to obtain a 120 cm long and 120 cm wide imitation honeycomb structure mold.

[0041] Then it is cut by a press to form hollow honeycomb units in the wool flakes. Each unit provides an isolated air layer, resulting in a length of 120cm, a width of 120cm, a height of 5mm, and a gram weight of 70g / m 2 Honeycomb bionic microstructure insulation layer.

[0042] (3) Moisture-heat conversion layer 3: hydrophilic treatment process for wool fibers: select wool as the base material, select SS-64 hydrophilic softener (Dongguan Silicon Soft Biotechnology Co., Ltd.) with an effective substance concentration of 30% as the wool hydrophilic treatment reagent, and polyvinyl alcohol (PVA) as the reinforcing agent; weigh the wool to 100g, set the bath ratio to 1:10, prepare 40g / L hydrophilic finishing agent solution, disperse polyvinyl alcohol in the hydrophilic finishing agent solution at 8%, and stir evenly to prepare a mixed solution; completely immerse the wool base material in the mixed solution, set the temperature to 15℃, and the time to 30min; take out the treated wool sample, and use a roller pressure of 5kg / cm² to press out excess moisture in the fiber; place the wool sample at 70℃ for curing treatment for 50min to ensure that polyvinyl alcohol and the hydrophilic finishing agent are fully combined; put the cured wool fiber into the drying equipment, control the temperature at 50°C, and perform low-temperature drying for 1.5 hours; 80g of hydrophilically treated wool fibers and 20g of Yirebao fibers are evenly mixed, the mixed fiber clusters are loosened, and the loosened fiber bundles are fed into a carding machine for combing. After the fiber bundles are combed into a single fiber state, they are fed into an air-laying machine for air-laying to form a three-dimensional randomly arranged fiber web, thereby obtaining a moisture-heat conversion layer 3.

[0043] Finally, the three-layer fiber web is needle-punched from top to bottom to form the light-heat conversion layer 1, the honeycomb bionic microstructure insulation layer 2, and the moisture-heat conversion layer 3, and the weight is 250g / m 2 , the double-effect heat energy conversion warm wool velvet flakes with a thickness of 9mm achieve excellent double-effect heat energy conversion and bionic insulation effects.

[0044] Example 3 100g of wool fiber with a diameter of 25μm and a length of 60mm and 30g of polyester far-infrared heating fiber with a diameter of 10μm and a length of 30mm were selected as the base material, wherein the polyester far-infrared heating fiber was made by adding 10% Al2O3 nanopowder to polyester far-infrared heating fiber, and titanium dioxide with a particle size of 20nm was used as a material to enhance the light-to-heat conversion efficiency, to prepare a light-to-heat conversion layer 1 with a gram weight of 100g / m² and a thickness of 2mm; 150g of wool fiber with a diameter of 25μm and a length of 60mm was selected as the base material. In the process of preparing the flakes, a honeycomb structure was introduced to prepare a flake with a gram weight of 40g / m 2, a honeycomb bionic microstructure insulation layer 2 with a thickness of 2 mm; Wool fibers with a diameter of 25 μm and a length of 60 mm were selected, and after being treated with a hydrophilic agent, hydrophilic treated wool fibers with a diameter of 26 μm and a length of 60 mm were obtained. 70 g of hydrophilic wool fibers and 30 g of WARMWINTER moisture-absorbing and heat-generating fibers were evenly mixed at a weight ratio of 7:3 to prepare a 100 g / m 2 , a moisture-heat conversion layer 3 with a thickness of 4 mm.

[0045] The specific preparation steps of the light-heat conversion layer, the honeycomb bionic microstructure insulation layer and the moisture-heat conversion layer are as follows: (1) Photothermal conversion layer: First, the wool fibers are pre-treated with titanium dioxide nanomaterials to improve the photothermal conversion efficiency. Then, the wool fiber clusters treated with titanium dioxide and the polyester far-infrared heating fiber clusters are opened respectively. The opened fiber bundles are sent to a carding machine for combing. After the fiber bundles are combed into a single fiber state, they are input into an airflow laying machine for airflow netting to form a fiber net with three-dimensional random arrangement of fibers. Finally, an upper lightweight wool fiber layer 4, a mid-to-far infrared heating layer 5, and a lower lightweight wool fiber layer 6 are obtained respectively; Among them, the specific steps of modifying wool fibers by titanium dioxide treatment are: selecting 100g of wool fibers as the substrate, the water-bath ratio is 1:8, adding 5% titanium dioxide powder as a material to enhance the photothermal conversion efficiency, and 7% (w / w) polyurethane emulsion as a titanium dioxide stabilizer with waterproof properties; dissolving titanium dioxide nanoparticles and polyurethane emulsion in water to form an impregnation solution to prepare a mixed solution A; fully immersing the wool fibers in solution A at a temperature of 60°C for 60 minutes; taking out the wool sample, and pressing the excess water in the fiber with a roller pressure of 4kg / cm²; then heat-treating the treated wool fibers at 130°C for 20 minutes to ensure the combination of titanium dioxide and wool fibers, while promoting the photothermal properties of titanium dioxide.

[0046] (2) Honeycomb bionic microstructure insulation layer: The wool fiber group is opened and the opened fiber bundles are sent to the carding machine for combing. After the fiber bundles are combed into a single fiber state, they are input into the airflow laying machine for airflow netting to form a three-dimensional randomly arranged fiber net with a gram weight of 120g / m 2 , with a thickness of 5 mm, and then the laid fiber web is sequentially passed through the imitation honeycomb structure mold, wherein the imitation honeycomb structure mold is a regular hexagonal shell with a length of 10 cm, a width of 1 cm, and a height of 1 cm. The regular hexagonal shell units are arranged in a cycle of N in the first row, N-1 in the second row, N in the third row, N-1 in the fourth row... to obtain a 100 cm long and 80 cm wide imitation honeycomb structure mold.

[0047] Then it is cut by a press to form hollow honeycomb units in the wool flakes. Each unit provides an isolated air layer, resulting in a length of 110 cm, a width of 90 cm, a height of 2 mm, and a gram weight of 40 g / m 2 Honeycomb bionic microstructure insulation layer.

[0048] (3) Moisture-heat conversion layer 3: hydrophilic treatment process for wool fibers: select wool as the base material, select TYW-129 hydrophilic softener (produced by Dongguan Taiyang New Material Technology Co., Ltd.) with an effective substance concentration of 30% as the wool hydrophilic treatment reagent, and polyvinyl alcohol (PVA) as the reinforcing agent; weigh the wool to 100g, set the bath ratio to 1:8, prepare 20g / L hydrophilic finishing agent solution, disperse polyvinyl alcohol in the hydrophilic finishing agent solution at 10%, and stir evenly to prepare a mixed solution; completely immerse the wool base material in the mixed solution, set the temperature to 20℃, and the time to 25min; take out the treated wool sample, and use a roller pressure of 4kg / cm² to press out excess moisture in the fiber; place the wool sample at 60℃ for curing treatment for 40min to ensure that polyvinyl alcohol and the hydrophilic finishing agent are fully combined; put the cured wool fiber into the drying equipment, control the temperature at 40°C, and perform low-temperature drying for 2 hours; 70 g of hydrophilically treated wool fibers and 30 g of WARMWINTER moisture-absorbing and heat-generating fibers are uniformly mixed, the mixed fiber clusters are loosened, and the loosened fiber bundles are fed into a carding machine for combing. After the fiber bundles are combed into a single fiber state, they are fed into an air-laid machine for air-laying to form a three-dimensional randomly arranged fiber web, thereby obtaining a moisture-heat conversion layer 3.

[0049] Finally, the three-layer fiber web is needle-punched from top to bottom to form the light-heat conversion layer 1, the honeycomb bionic microstructure insulation layer 2, and the moisture-heat conversion layer 3, and the weight is 240g / m 2 , the double-effect heat energy conversion warm wool velvet flakes with a thickness of 7mm achieve excellent double-effect heat energy conversion and bionic insulation effects.

[0050] Example 4 100g of wool fiber with a diameter of 20μm and a length of 55mm and 30g of polyester far-infrared heating fiber with a diameter of 18μm and a length of 55mm were selected as the base material, wherein the polyester far-infrared heating fiber was made by adding 6% ZrO2 nanopowder to polyester far-infrared heating fiber, and titanium dioxide with a particle size of 100nm was used as a material to enhance the light-to-heat conversion efficiency, to prepare a light-to-heat conversion layer 1 with a gram weight of 115g / m² and a thickness of 4mm; 150g of wool fiber with a diameter of 20μm and a length of 55mm was selected as the base material. In the process of preparing the flakes, a honeycomb structure was introduced to prepare a flake with a gram weight of 60g / m 2, a honeycomb bionic microstructure insulation layer 2 with a thickness of 3 mm; Wool fibers with a diameter of 20 μm and a length of 55 mm were selected, and after being treated with a hydrophilic agent, hydrophilic treated wool fibers with a diameter of 22 μm and a length of 55 mm were obtained. 60 g of hydrophilic wool fibers and 40 g of Yirebao fibers were evenly mixed at a weight ratio of 6:4 to prepare a hydrophilic wool fiber with a weight of 90 g / m 2 , a moisture-heat conversion layer 3 with a thickness of 3mm.

[0051] The specific preparation steps of the light-heat conversion layer, the honeycomb bionic microstructure insulation layer and the moisture-heat conversion layer are as follows: (1) Photothermal conversion layer: First, the wool fibers are pre-treated with titanium dioxide nanomaterials to improve the photothermal conversion efficiency. Then, the wool fiber clusters treated with titanium dioxide and the polyester far-infrared heating fiber clusters are opened respectively. The opened fiber bundles are sent to a carding machine for combing. After the fiber bundles are combed into a single fiber state, they are input into an airflow laying machine for airflow netting to form a fiber net with three-dimensional random arrangement of fibers. Finally, an upper lightweight wool fiber layer 4, a mid-to-far infrared heating layer 5, and a lower lightweight wool fiber layer 6 are obtained respectively; Among them, the specific steps of modifying wool fibers by titanium dioxide treatment are: selecting 100g of wool fibers as the substrate, the water-bath ratio is 1:7, adding 4% titanium dioxide powder as a material to enhance the photothermal conversion efficiency, and 10% (w / w) polyurethane emulsion as a titanium dioxide stabilizer with waterproof properties; dissolving titanium dioxide nanoparticles and polyurethane emulsion in water to form an impregnation solution to prepare a mixed solution A; fully immersing the wool fibers in solution A at a temperature of 40°C for 100 minutes; taking out the wool sample, and pressing the excess water in the fiber with a roller pressure of 3kg / cm²; then heat-treating the treated wool fibers at 110°C for 40 minutes to ensure the combination of titanium dioxide and wool fibers, while promoting the photothermal properties of titanium dioxide.

[0052] (2) Honeycomb bionic microstructure insulation layer: The wool fiber group is opened and the opened fiber bundle is sent to the carding machine for combing. After the fiber bundle is combed into a single fiber state, it is input into the airflow laying machine for airflow netting to form a three-dimensional randomly arranged fiber net with a gram weight of 100g / m 2 , with a thickness of 3mm, and then the laid fiber web is sequentially passed through the imitation honeycomb structure mold, wherein the imitation honeycomb structure mold is a regular hexagonal shell with a length of 5cm, a width of 2cm, and a height of 2cm. The regular hexagonal shell units are arranged in a cycle of N in the first row, N-1 in the second row, N in the third row, N-1 in the fourth row... to obtain a 100cm long and 80cm wide imitation honeycomb structure mold.

[0053] Then it is cut by a press to form a hollow honeycomb unit in the wool flakes. Each unit provides an isolated air layer, resulting in a length of 100 cm, a width of 80 cm, a height of 3 mm, and a gram weight of 60 g / m 2 Honeycomb bionic microstructure insulation layer.

[0054] (3) Moisture-heat conversion layer 3: hydrophilic treatment process for wool fibers: select wool as the base material, select TYW-129 hydrophilic softener (produced by Dongguan Taiyang New Materials Technology Co., Ltd.) with an effective substance concentration of 30% as the wool hydrophilic treatment reagent, and polyvinyl alcohol (PVA) as the reinforcing agent; weigh the wool to 100g, set the bath ratio to 1:7, prepare 30g / L hydrophilic finishing agent solution, disperse polyvinyl alcohol in the hydrophilic finishing agent solution at 5%, and stir evenly to prepare a mixed solution; completely immerse the wool base material in the mixed solution, set the temperature to 25℃, and the time to 10min; take out the treated wool sample, and use a roller pressure of 3kg / cm² to press out excess moisture in the fiber; place the wool sample at 50℃ for curing treatment for 60min to ensure that polyvinyl alcohol and the hydrophilic finishing agent are fully combined; put the cured wool fiber into the drying equipment, control the temperature at 45°C, and perform low-temperature drying for 2 hours; 60g of hydrophilically treated wool fibers and 40g of Yirebao fibers are evenly mixed, the mixed fiber clusters are loosened, and the loosened fiber bundles are fed into a carding machine for combing. After the fiber bundles are combed into a single fiber state, they are fed into an air-laid machine for air-laying to form a three-dimensional randomly arranged fiber web, thereby obtaining a moisture-heat conversion layer 3.

[0055] Finally, the three-layer fiber web is needle-punched from top to bottom to form the light-heat conversion layer 1, the honeycomb bionic microstructure insulation layer 2, and the moisture-heat conversion layer 3, and the weight is 265g / m 2 , the double-effect heat energy conversion warm wool velvet flakes with a thickness of 10mm achieve excellent double-effect heat energy conversion and bionic insulation effects.

[0056] Example 5 The raw materials used for the photothermal conversion layer, honeycomb bionic microstructure insulation layer and moisture-heat conversion layer are the same as those in Example 1. The difference from Example 1 is that the specific preparation of the photothermal conversion layer, honeycomb bionic microstructure insulation layer and moisture-heat conversion layer is exactly the same as that in Example 2.

[0057] Example 6 The raw materials used for the photothermal conversion layer, honeycomb bionic microstructure insulation layer and moisture-heat conversion layer are the same as those in Example 1. The difference from Example 1 is that the specific preparation of the photothermal conversion layer, honeycomb bionic microstructure insulation layer and moisture-heat conversion layer is exactly the same as that in Example 3.

Claims

1. A warm wool flannel with double-effect heat energy conversion, characterized in that: It comprises a light-heat conversion layer (1), a honeycomb bionic microstructure thermal insulation layer (2) and a moisture-heat conversion layer (3), wherein the honeycomb bionic microstructure thermal insulation layer (2) is an intermediate layer, and the light-heat conversion layer (1) and the moisture-heat conversion layer (3) are located on both sides of the honeycomb bionic microstructure thermal insulation layer (2); Calculated by total mass percentage, the light-to-heat conversion layer (1) is 40% to 50%, the honeycomb bionic microstructure thermal insulation layer (2) is 10% to 30%, and the moisture-heat conversion layer (3) is 30% to 50%.

2. The warm wool flannel with double-effect heat energy conversion according to claim 1, characterized in that: The light-to-heat conversion layer (1) has a gram weight of 80-120 g / m² and a thickness of 2-5 mm; the light-to-heat conversion layer (1) is composed of three layers of flakes, the middle layer is a far-infrared heating layer (5), and the far-infrared heating layer (5) is provided with an upper light wool fiber layer (4) and a lower light wool fiber layer (6) on both sides thereof; The upper light wool fiber layer (4) has a gram weight of 20-30 g / m² and a thickness of 1-2 mm. The upper light wool fiber layer (4) is made of wool fibers modified with titanium dioxide particles. The diameter of the selected wool fibers is 20-30 μm and the length is 40-60 mm. The particle size of the selected titanium dioxide particles is 20-100 nm. The specifications and preparation method of the lower light wool fiber layer (6) are the same as those of the upper light wool fiber layer (4). The far-infrared heating layer (5) has a gram weight of 70-100 g / m² and a thickness of 2-4 mm. The far-infrared heating layer (5) is a polyester far-infrared heating fiber prepared by adding 5%-10% of a ceramic far-infrared heating material to a polyester fiber with a diameter of 10-20 μm and a length of 30-60 mm. The polyester far-infrared heating fiber is one or both of a polyester far-infrared fiber and a three-dimensional curled far-infrared fiber. The ceramic far-infrared heating material is a ZrO2, MgO or Al2O3 nanopowder.

3. The warm wool flannel with double-effect heat energy conversion according to claim 1 is characterized in that: The honeycomb bionic microstructure thermal insulation layer (2) has a gram weight of 30-70 g / m 2 , thickness is 2-5mm; The honeycomb bionic microstructure thermal insulation layer (2) is prepared by opening, combing and laying wool fibers with a diameter of 20-30 μm and a fiber length of 40-60 mm to obtain a single-layer wool flake, which is then cut in sequence using a honeycomb structure-simulating mold, and finally cut using a press to form a hollow regular hexagonal shell. The regular hexagonal shell units are cyclically and continuously arranged in the order of "Odd-numbered rows of N, Even-numbered rows of N-1", where N≥3, thereby obtaining the honeycomb bionic microstructure thermal insulation layer (2).

4. The warm wool flannel with double-effect heat energy conversion according to claim 3 is characterized in that: The simulated honeycomb structure mold is made of light polymer materials such as polystyrene or polyester.

5. The warm wool flannel with double-effect heat energy conversion according to claim 1, characterized in that: The moisture heat conversion layer (3) has a gram weight of 80-120 g / m² and a thickness of 2-5 mm; The moisture-heat conversion layer (3) is formed by uniformly mixing hydrophilic modified wool fibers and moisture-absorbing and heat-generating fibers, wherein, by weight percentage, the hydrophilic modified wool fibers account for 60%-80% and the moisture-absorbing and heat-generating fibers account for 20%-40%; The hydrophilic modified wool fiber has a diameter of 20-35 μm and a length of 40-60 mm. The hydrophilic modified wool fiber is obtained by using wool fibers with a diameter of 20-30 μm and a length of 40-60 mm as a base material and modified by a hydrophilic agent. The moisture-absorbing and heat-generating fiber is a heat-generating polyacrylonitrile fiber.

6. The method for preparing the warm wool flannel with double-effect heat energy conversion according to any one of claims 1 to 5, characterized in that: The specific steps are as follows: S1. Select polyester far-infrared heating fiber and wool fiber, perform titanium dioxide modification on the wool fiber, and then perform composite needle punching in the order of "light wool fiber layer-far-infrared heating layer-light wool fiber layer" to obtain a light-to-heat conversion layer; S2, selecting 100% wool fiber as the base material, cutting it through a honeycomb structure-like mold to form a hollow regular hexagonal shell, and obtaining a honeycomb bionic microstructure insulation layer; S3, selecting wool fibers and performing hydrophilic finishing, and then mixing the hydrophilic finished wool fibers with moisture absorbing and heating fibers to obtain a moisture-heat conversion layer; S4. The prepared light-to-heat conversion layer, honeycomb bionic microstructure insulation layer and moisture-heat conversion layer are stacked in order of top, middle and bottom, and the three-layer fiber mesh is fixed by needle punching through a needle punching machine to obtain a warm wool flannel with double-effect heat energy conversion.

7. The method for preparing the warm wool flannel with double-effect heat energy conversion according to claim 6, characterized in that: The specific method of S1 is: S1.

1. Material selection: polyester far-infrared heating fiber, wool fiber and titanium dioxide with a particle size of 20-100nm are selected respectively; S1.2, wool fiber modification treatment: dissolving titanium dioxide nanoparticles and polyurethane emulsion in water to form an impregnation solution, wherein the concentration of titanium dioxide nanoparticles in the impregnation solution is 3%-6%, and the concentration of polyurethane emulsion is 5%-10%; Completely immerse the wool fiber in the impregnation solution and react for 60-120 minutes at a reaction temperature of 30-60°C and a bath ratio of 1:5-10; Curing and drying treatment: Take out the wool fiber, use a roller to squeeze out excess water in the wool fiber after the reaction, and the roller pressure is 2-5kg / cm²; then place the treated wool fiber at 100-130°C for heat treatment for 20-60 minutes to obtain a light wool fiber layer; S1.3, Prefabricated single-layer flakes: Fiber opening: The polyester far-infrared heating fiber group and the wool fiber group modified by titanium dioxide are opened separately by an opening machine to obtain loose fibers; Carding and web forming: the loose polyester far-infrared heating fiber and modified wool fiber are carded by a carding machine, and then air-laid by an air-laid machine to obtain a lightweight wool fiber layer with a gram weight of 20-30 g / m² and a thickness of 1-2 mm, and a far-infrared heating layer with a gram weight of 70-100 g / m² and a thickness of 2-4 mm (5); Layered laying: The obtained light wool fiber layer and far-infrared heating layer (5) are stacked in sequence according to the upper light wool fiber layer (4), the middle far-infrared heating layer (5), and the lower light wool fiber layer (6), to form a light-to-heat conversion layer (1) with excellent light-to-heat conversion efficiency.

8. The method for preparing the warm wool flannel with double-effect heat energy conversion according to claim 6, characterized in that: The specific steps of S2 are: S2.

1. Material selection: Select 100% wool fiber as the base material; S2.2, Prefabricated single-layer flakes: Fiber opening: The selected wool fiber mass is opened by an opening machine to obtain dispersed wool fibers; Carding to form a web: The loosened wool fibers are combed by a carding machine, and then air-laid by an air-laid machine; Cross-lapping: The single-layer fiber web is cross-lapped to obtain a weight of 100-150g / m 2 , un-needled single-layer flakes with a thickness of 3-6 mm; Introducing bionic honeycomb structure: the un-needled single-layer flakes obtained after cross-laying are sequentially passed through the imitation honeycomb structure mold and cut by a press. The flakes are cut through the imitation honeycomb structure mold to form a hollow regular hexagonal shell. Each unit provides an isolated air layer, and the final weight is 30-70g / m 2 , the thickness of the honeycomb bionic microstructure insulation layer (2) is 2-5mm.

9. The method for preparing the warm wool flannel with double-effect heat energy conversion according to claim 6, characterized in that: The specific method of S3 is: S3.

1. Preparation of hydrophilic wool fiber Material selection: select partially descaled wool fiber as base material, hydrophilic softener and polyvinyl alcohol; Solution preparation: weigh the weight of some descaled wool fibers as A, the weight of the hydrophilic finishing agent as B, and set the bath ratio to 1:4-10; prepare a 20-40g / L hydrophilic finishing agent solution according to the bath ratio and record it as solution C; disperse polyvinyl alcohol in solution C at a concentration of 1%-10%, and stir evenly to prepare solution D; Hydrophilic treatment: completely immerse part of the descaled wool fiber in solution D for 10-30 minutes, and set the temperature to 15-30℃; Curing and drying treatment: Take out the wool sample, and use a roller to press out excess water from the fiber, with a roller pressure of 2-5kg / cm²; place the wool sample at a temperature of 40-70°C for curing treatment for 30-60 minutes; place the cured wool fiber in a drying device, control the temperature at 30-50°C, and perform low-temperature drying for 1-2 hours to obtain hydrophilic modified wool fiber; S3.

2. Preparation of moisture-heat conversion layer Material selection: Weigh the hygroscopic heat-generating fiber and hydrophilic modified wool fiber respectively; Evenly mix: evenly mix the selected moisture-absorbing and heat-generating fibers and hydrophilic modified wool fibers to improve the evenness of the blended flakes; Prefabricated single-layer flakes: The evenly mixed hygroscopic heat-generating fibers and hydrophilic modified wool fibers are opened by an opener to obtain loose fibers; the loose mixed fibers obtained after opening are combed by a carding machine, and then air-laid by an air-laying machine; the single-layer fiber web is cross-laid to form a non-needled heat-conversion fiber layer with a weight of 80-120g / m² and a thickness of 2-5mm.

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