Heat-storage warm-keeping down-locking layered fabric and down jacket

Abstract

The invention provides a heat-storage warm-keeping down-locking layered fabric and a down jacket. The heat-storage warm-keeping down-locking layered fabric sequentially comprises a skin-friendly layer, a liner cloth layer and a heat-storage warm-keeping down-locking layer from inside to outside, and the heat-storage warm-keeping down-locking layer is prepared by napping a heat-storage warm-keeping fabric; yarns for weaving the heat-storage and warm-keeping fabric are heat-storage and warm-keeping fiber / hollow polyester fiber / wool fiber blended yarns; the heat-storage warm-keeping fiber comprises polyester and a heat storage agent, and the preparation method of the heat storage agent comprises the following steps: firstly loading a polyethylene glycol / nano molybdenum disulfide composite material by adopting porous silicon dioxide microspheres, then mixing with a mixture containing silica sol and nano metal silver, and performing vacuum drying to obtain the heat storage agent. The heat-storage warm-keeping down-locking layered fabric has excellent heat-storage warm-keeping effects, can lock down, has a good antibacterial effect, and has a very good application effect when being used as a lining fabric of a down jacket.

Description

Technical Field

[0001] The invention relates to the technical field of textile fabrics, and in particular to a heat-storing, warm-keeping, and down-locking layered fabric and a down jacket. Background Art

[0002] Compared to other cold-weather clothing, down jackets hold a distinct advantage in the market due to their lightweight and warm properties. Suitable for a variety of occasions, from daily commuting to outdoor activities and polar expeditions, their lightweight and warm qualities make them a winter must-have. Technological advancements have led to a greater variety of down jacket designs, offering both warmth and style, making them an essential winter wardrobe necessity.

[0003] As a crucial component of down jackets, the structure and performance of fabrics significantly impact the comfort and durability of down jackets. Currently, down jackets' warmth relies primarily on the down's fluffy structure, which locks in air and forms an insulating layer. However, using a lining with heat-storage properties can further store heat emitted by the human body, preventing it from being lost through conduction and effectively enhancing the jacket's warmth. Furthermore, because the down inside down jackets is very fine and light, it easily escapes through gaps in the fabric. Therefore, to effectively prevent down leakage and reduce down retention, which can impact warmth retention, down jacket fabrics must have down-locking properties.

[0004] Therefore, preparing fabrics that can both lock down and store heat and keep warm can effectively improve the product performance of down jackets. Summary of the Invention

[0005] The purpose of the present invention is to provide a heat-storing, warm-keeping, down-locking layered fabric and a down jacket. The heat-storing, warm-keeping, down-locking layered fabric has excellent heat-storing and warm-keeping effects, can lock down, and has good antibacterial effects. When used as the inner layer fabric of a down jacket, it has a good application effect.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A heat-storage, heat-insulating, and heat-locking velvet layered fabric, comprising, from the inside out, a skin-friendly layer, a lining layer, and a heat-storage, heat-insulating, and heat-locking velvet layer; the heat-storage, heat-insulating, and heat-locking velvet layer is prepared by napping the heat-storage, heat-insulating, and heat-insulating fabric; the yarn used to weave the heat-storage, heat-insulating, and heat-insulating fabric is a blended yarn of heat-storage, heat-insulating, and heat-insulating fiber / hollow polyester fiber / wool fiber; The blending ratio of the heat-storage and heat-retaining fiber / hollow polyester fiber / wool fiber blended yarn is 20-40%, the blending ratio of the hollow polyester fiber is 30-50%, and the blending ratio of the wool fiber is 20-30%. The heat-storage and thermal insulation fiber comprises the following raw materials in the following weight percentages: 96.7-97.5% polyester and 2.5-3.3% heat storage agent. The preparation method of the heat storage agent comprises the following steps: firstly using porous silica microspheres to load polyethylene glycol / nano-molybdenum disulfide composite materials, then mixing the composite materials with a mixture containing silica sol and nano-metal silver, and obtaining the heat storage agent after vacuum drying.

[0007] Preferably, the molecular weight of the polyethylene glycol is 4000-6000; the particle size of the nano-molybdenum disulfide is 5-15 nm; the particle size of the porous silica microspheres is 0.5-1.5 μm; and in the polyethylene glycol / nano-molybdenum disulfide composite material, the mass ratio of polyethylene glycol to nano-molybdenum disulfide is 10-15:0.5-1.

[0008] Preferably, the solid content of the silica sol is 25-30%, the particle size of silicon dioxide in the silica sol is 20-50 nm; the particle size of the nano-metal silver is 10-30 nm, and the mass ratio of the silica sol to the nano-metal silver in the mixture is 100:0.5-1; The amount of the silica sol used is 25-30% of the mass of the porous silica microspheres.

[0009] Preferably, the preparation method of the heat storage agent specifically comprises the following steps: (1) Add polyethylene glycol to water, heat it to 60-70°C, then add nano-molybdenum disulfide and sodium carboxymethyl cellulose, and disperse them by ultrasonication while stirring to obtain a polyethylene glycol / nano-molybdenum disulfide mixed dispersion; In the polyethylene glycol / nano-molybdenum disulfide mixed dispersion, the mass fraction of the polyethylene glycol is 10-15%; the mass fraction of the nano-molybdenum disulfide is 0.5-1%; and the mass fraction of the sodium carboxymethyl cellulose is 0.5-1%. (2) spraying a portion of the polyethylene glycol / nano-MoS2 mixed dispersion onto the porous silica microspheres while stirring them, and after the polyethylene glycol / nano-MoS2 mixed dispersion is completely adsorbed by the porous silica microspheres, vacuum drying is performed at 40-45°C to remove moisture; (3) Repeat step (2) until the polyethylene glycol / nano-MoS2 mixed dispersion is sprayed completely, and then vacuum-dry to remove moisture, thereby obtaining porous silica microspheres loaded with polyethylene glycol / nano-MoS2 composite materials; The mass of the polyethylene glycol / nano-molybdenum disulfide mixed dispersion is 2.4 to 3.2 times the mass of the porous silica microspheres; (4) Adding nano-metal silver to the silica sol, and performing ultrasonic dispersion while stirring to obtain a mixture; adding the mixture to the porous silica microspheres loaded with polyethylene glycol / nano-molybdenum disulfide composite material obtained by the treatment in step (3), mixing evenly, and then standing, and then placing it at 40-45° C. and vacuum drying for 60-80 hours while stirring, and obtaining the thermal storage agent after dispersion.

[0010] Preferably, the preparation method of the heat-storage and thermal insulation fiber includes the following steps: after the polyester and the heat storage agent are evenly mixed, a twin-screw extruder is used for blending, melt extrusion and granulation, and then melt spinning is carried out, and then the heat-storage and thermal insulation fiber is obtained through annular air cooling, winding, bundling, drawing, tension heat setting, curling, oiling, relaxation heat setting, and cutting.

[0011] Preferably, the linear density of the heat-storage and heat-retaining fiber is 50-80 dtex, and the length is 38-51 mm; the linear density of the hollow polyester fiber is 20-28 dtex, and the length is 38-51 mm.

[0012] Preferably, the weight of the heat storage and warmth locking fleece layer is 200-230 g / m 2 The skin-friendly layer is one of cotton fiber fabric, modal fabric, and Tencel fabric, and the weight of the skin-friendly layer is 120~160g / m 2 The bile cloth layer is nylon bile cloth or polyester bile cloth, and the weight of the bile cloth layer is 150~180g / m 2 .

[0013] Preferably, the preparation method of the heat storage and warmth retaining fiber / hollow polyester fiber / wool fiber blended yarn comprises the following steps: The heat-storage and thermal insulation fiber, hollow polyester fiber and wool fiber are weighed according to the ratio, and then the cotton is cleaned and carded to prepare the heat-storage and thermal insulation fiber strips and hollow polyester fiber / wool fiber mixed strips; the heat-storage and thermal insulation fiber strips and hollow polyester fiber / wool fiber mixed strips are then drawn together to obtain mixed fiber strips; and then the fibers are processed in sequence through coarse yarn, spun yarn, winding and doubling to obtain the heat-storage and thermal insulation fiber / hollow polyester fiber / wool fiber blended yarn.

[0014] Preferably, the method for preparing the heat-storing, warmth-retaining and velvet-locking layered fabric comprises the following steps: The heat storage and warmth retaining fiber / hollow polyester fiber / wool fiber blended yarn is warp-woven to obtain a fabric; the obtained fabric is then dyed and finished to obtain the heat storage and warmth retaining fabric; Then, one side of the heat-storage and warmth-keeping fabric is subjected to a napping treatment to obtain the heat-storage and warmth-keeping velvet layer; The side of the heat-storage, warmth-keeping and locking fleece layer that has not been napped is hot-pressed with the lining cloth layer using dot-shaped hot melt adhesive, and then the side of the composite fabric away from the heat-storage, warmth-keeping and locking fleece layer is hot-pressed with the skin-friendly layer using dot-shaped hot melt adhesive.

[0015] As a general inventive concept, the present invention also provides a down jacket, comprising an outer fabric, an inner fabric, and a down layer arranged between the outer fabric and the inner fabric, wherein the inner fabric is the heat-storing, warmth-keeping, and down-locking layered fabric, and the napped side of the heat-storing, warmth-keeping, and down-locking layered fabric faces the down layer.

[0016] The beneficial effects of the present invention are: The present invention is to enhance the thermal insulation and heat storage performance of the fabric. When preparing the thermal insulation and heat lock velvet layer, a blended yarn prepared from thermal insulation fiber, hollow polyester fiber, and wool fiber is used. A thermal storage agent is added to the thermal insulation fiber. The thermal storage agent uses porous silica microspheres as the load body, and a large amount of polyethylene glycol / nano-molybdenum disulfide composite material is loaded in its internal pores. Polyethylene glycol is used as a thermal storage material and has a high phase change latent heat, which can store a large amount of thermal energy. After being mixed and compounded with nano-molybdenum disulfide, the thermal conductivity of polyethylene glycol can be effectively improved, and the storage and release rate of heat can be accelerated. At the same time, nano-molybdenum disulfide can also enhance the stability of polyethylene glycol, so that the thermal storage agent can reflect better thermal storage performance. Nano-molybdenum disulfide can also absorb light energy and convert it into heat energy, thereby improving the thermal storage effect of the layered fabric of the thermal insulation and heat lock velvet.

[0017] Furthermore, the present invention uses silica sol to coat porous silica microspheres loaded with a polyethylene glycol / nano-molybdenum disulfide composite material. After drying, the porous silica microspheres can be sealed, and the nano-silver in the silica sol can be relatively evenly dispersed on the surface of the porous silica microspheres. This, combined with the nano-silver on the surface of the porous silica microspheres, allows the resulting thermal storage agent to have a heat storage effect while also having high antibacterial properties, and imparts excellent antibacterial properties to the layered fabric of the heat-storing, warm-keeping, and lock-in velvet. The addition of nano-silver can also improve the thermal conductivity of the thermal storage agent, thereby accelerating the thermal storage agent's absorption and release rate of heat.

[0018] The yarn used to weave the heat-storage and heat-insulating fabric of the present invention is a blended yarn of heat-storage and heat-insulating fiber / hollow polyester fiber / wool fiber. After the fibers are mixed and woven, the resulting fabric has a good heat-storage and heat-insulating effect. After being napped, the napped side of the fabric has a velvet-locking effect. The skin-friendly layer is further combined with the heat-storage and heat-insulating velvet layer to prepare a layered fabric, which effectively improves the wearing comfort of the resulting fabric. A lining layer is provided between the skin-friendly layer and the heat-storage and heat-insulating velvet layer, which makes the structure of the heat-storage and heat-insulating velvet layer more stable and has better windproof performance. When the heat-storage and heat-insulating velvet layered fabric obtained by the present invention is used as the inner fabric of a down jacket, it has a good warming effect and is highly comfortable. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] Example 1: Preparation of heat-storage and heat-retaining fiber.

[0021] A heat-storage and warmth-retaining fiber comprises the following raw materials in percentage by weight: 96.7% polyester and 3.3% heat storage agent.

[0022] The preparation method of the heat-storage and thermal insulation fiber includes the following steps: after the polyester and the heat storage agent are evenly mixed, the blending and melt-extrusion granulation are carried out using a twin-screw extruder, and then melt-spinning is carried out, and then the heat-storage and thermal insulation fiber is obtained through ring-blowing cooling, winding, bundling, drawing, tension heat setting, curling, oiling, relaxation heat setting, and cutting.

[0023] The preparation method of the heat storage agent specifically comprises the following steps: (1) Polyethylene glycol 6000 was added to water, and the temperature was raised to 70°C. Nano-molybdenum disulfide (particle size of 5-15 nm) and sodium carboxymethyl cellulose were then added. The mixture was ultrasonically dispersed for 4 h while stirring to obtain a polyethylene glycol / nano-molybdenum disulfide mixed dispersion. In the polyethylene glycol / nano-molybdenum disulfide mixed dispersion, the mass fraction of polyethylene glycol 6000 was 12%; the mass fraction of nano-molybdenum disulfide was 0.6%; and the mass fraction of sodium carboxymethyl cellulose was 0.5%.

[0024] (2) While stirring the porous silica microspheres (particle size of 0.5-1.5 μm), a portion of the polyethylene glycol / nano-MoS2 mixed dispersion was sprayed into the porous silica microspheres. After the polyethylene glycol / nano-MoS2 mixed dispersion was completely adsorbed by the porous silica microspheres, the mixture was placed in a vacuum dryer at 45°C to remove moisture.

[0025] (3) Repeat step (2) until the polyethylene glycol / nano-MoS2 mixed dispersion is sprayed completely, and then vacuum-dry to remove moisture, thereby obtaining porous silica microspheres loaded with polyethylene glycol / nano-MoS2 composite materials; The total mass of the polyethylene glycol / nano-molybdenum disulfide mixed dispersion used is 3.2 times the mass of the porous silica microspheres.

[0026] (4) Adding nano-metal silver (with a particle size of 10-30 nm) to silica sol with a solid content of 30% (the particle size of silica in the silica sol is 20-50 nm), with a mass ratio of silica sol to nano-metal silver being 100:0.8, and performing ultrasonic dispersion while stirring to obtain a mixture, wherein the amount of silica sol used is 25% of the mass of the porous silica microspheres; adding the mixture to the porous silica microspheres loaded with polyethylene glycol / nano-molybdenum disulfide composite material obtained by the treatment in step (3), mixing evenly, and then standing for 6 hours, and then placing it at 45°C and vacuum drying for 80 hours while stirring, to obtain the heat storage agent after dispersion.

[0027] Example 2: Preparation of heat-storage and warmth-retaining fiber.

[0028] A heat-storage and heat-retaining fiber comprises the following raw materials in percentage by weight: 97.5% polyester and 2.5% heat storage agent.

[0029] The preparation method of the heat-storage and thermal insulation fiber includes the following steps: after the polyester and the heat storage agent are evenly mixed, the blending and melt-extrusion granulation are carried out using a twin-screw extruder, and then melt-spinning is carried out, and then the heat-storage and thermal insulation fiber is obtained through ring-blowing cooling, winding, bundling, drawing, tension heat setting, curling, oiling, relaxation heat setting, and cutting.

[0030] The preparation method of the heat storage agent specifically comprises the following steps: (1) Polyethylene glycol 6000 was added to water, and the temperature was raised to 70°C. Nano-molybdenum disulfide (particle size of 5-15 nm) and sodium carboxymethyl cellulose were then added. The mixture was ultrasonically dispersed for 3 h while stirring to obtain a polyethylene glycol / nano-molybdenum disulfide mixed dispersion. In the polyethylene glycol / nano-molybdenum disulfide mixed dispersion, the mass fraction of polyethylene glycol 6000 was 15%; the mass fraction of nano-molybdenum disulfide was 1%; and the mass fraction of sodium carboxymethyl cellulose was 1%.

[0031] (2) While stirring the porous silica microspheres (particle size of 0.5-1.5 μm), a portion of the polyethylene glycol / nano-MoS2 mixed dispersion was sprayed into the porous silica microspheres. After the polyethylene glycol / nano-MoS2 mixed dispersion was completely adsorbed by the porous silica microspheres, the mixture was placed in a vacuum dryer at 45°C to remove moisture.

[0032] (3) Repeat step (2) until the polyethylene glycol / nano-MoS2 mixed dispersion is sprayed completely, and then vacuum-dry to remove moisture, thereby obtaining porous silica microspheres loaded with polyethylene glycol / nano-MoS2 composite materials; The total mass of the polyethylene glycol / nano-molybdenum disulfide mixed dispersion used is 2.4 times the mass of the porous silica microspheres.

[0033] (4) Adding nano-metal silver (with a particle size of 10-30 nm) to silica sol with a solid content of 25% (the particle size of silica in the silica sol is 20-50 nm), with a mass ratio of silica sol to nano-metal silver being 100:0.5, and performing ultrasonic dispersion while stirring to obtain a mixture, wherein the amount of silica sol used is 30% of the mass of the porous silica microspheres; adding the mixture to the porous silica microspheres loaded with polyethylene glycol / nano-molybdenum disulfide composite material obtained by the treatment in step (3), mixing evenly, and then standing for 6 hours, and then placing it at 45°C and vacuum drying for 60 hours while stirring, to obtain the heat storage agent after dispersion.

[0034] Example 3: Preparation of heat-storage and warmth-retaining fiber.

[0035] A heat-storage and heat-retaining fiber comprises the following raw materials in percentage by weight: 97% polyester and 3% heat-storage agent.

[0036] The preparation method of the heat-storage and thermal insulation fiber includes the following steps: after the polyester and the heat storage agent are evenly mixed, the blending and melt-extrusion granulation are carried out using a twin-screw extruder, and then melt-spinning is carried out, and then the heat-storage and thermal insulation fiber is obtained through ring-blowing cooling, winding, bundling, drawing, tension heat setting, curling, oiling, relaxation heat setting, and cutting.

[0037] The preparation method of the heat storage agent specifically comprises the following steps: (1) Add polyethylene glycol 4000 to water, heat it to 60 °C, then add nano-molybdenum disulfide (particle size 5-15 nm) and sodium carboxymethyl cellulose, and disperse it ultrasonically while stirring for 3 h to obtain a polyethylene glycol / nano-molybdenum disulfide mixed dispersion; in the polyethylene glycol / nano-molybdenum disulfide mixed dispersion, the mass fraction of polyethylene glycol is 10%; the mass fraction of nano-molybdenum disulfide is 0.5%; and the mass fraction of sodium carboxymethyl cellulose is 0.8%.

[0038] (2) While stirring the porous silica microspheres (particle size of 0.5-1.5 μm), a portion of the polyethylene glycol / nano-MoS2 mixed dispersion was sprayed into the porous silica microspheres. After the polyethylene glycol / nano-MoS2 mixed dispersion was completely adsorbed by the porous silica microspheres, the mixture was placed in a vacuum dryer at 43°C to remove moisture.

[0039] (3) Repeat step (2) until the polyethylene glycol / nano-MoS2 mixed dispersion is sprayed completely, and then vacuum-dry to remove moisture, thereby obtaining porous silica microspheres loaded with polyethylene glycol / nano-MoS2 composite materials; The total mass of the polyethylene glycol / nano-molybdenum disulfide mixed dispersion used is 3 times the mass of the porous silica microspheres.

[0040] (4) Adding nano-metal silver (with a particle size of 10-30 nm) to silica sol with a solid content of 25% (the particle size of silica in the silica sol is 20-50 nm), with a mass ratio of silica sol to nano-metal silver being 100:1, and performing ultrasonic dispersion while stirring to obtain a mixture, wherein the amount of silica sol used is 28% of the mass of the porous silica microspheres; adding the mixture to the porous silica microspheres loaded with polyethylene glycol / nano-molybdenum disulfide composite material obtained by the treatment in step (3), mixing evenly, and then standing for 4 hours, and then placing it at 45°C and vacuum drying for 70 hours while stirring, to obtain the thermal storage agent after dispersion.

[0041] Example 4: A heat-storage, warmth-keeping, and heat-locking fleece layer, comprising, from the inside to the outside, a skin-friendly layer, a lining layer, and a heat-storage, warmth-keeping, and heat-locking fleece layer. The heat-storage, warmth-keeping, and heat-locking fleece layer is prepared by napping the heat-storage, warmth-keeping, and heat-locking fleece fabric. The weight of the heat-storage, warmth-keeping, and heat-locking fleece layer is 212 g / m 2 The skin-friendly layer is made of modal fabric, and the weight of modal fabric is 130g / m 2 The bile layer is nylon bile cloth, and the weight of nylon bile cloth is 160g / m 2 .

[0042] The yarn used to weave the heat-storage and thermal insulation fabric is a blended yarn of heat-storage and thermal insulation fiber / hollow polyester fiber / wool fiber; in the blended yarn of heat-storage and thermal insulation fiber / hollow polyester fiber / wool fiber, the blending ratio of the heat-storage and thermal insulation fiber is 40%, the blending ratio of the hollow polyester fiber is 30%, and the blending ratio of the wool fiber is 30%.

[0043] Among them, the heat-storage and heat-insulating fiber is prepared by the method in Example 1, and the linear density of the heat-storage and heat-insulating fiber is 60 dtex and the length is 38 mm; the linear density of the hollow polyester fiber is 28 dtex and the length is 51 mm.

[0044] The preparation method of the heat storage and warmth retaining fiber / hollow polyester fiber / wool fiber blended yarn comprises the following steps: The heat-storage and thermal insulation fiber, hollow polyester fiber and wool fiber are weighed according to the ratio, and then the cotton is cleaned and carded to prepare the heat-storage and thermal insulation fiber strips and hollow polyester fiber / wool fiber mixed strips; the heat-storage and thermal insulation fiber strips and hollow polyester fiber / wool fiber mixed strips are then drawn together to obtain mixed fiber strips; and then the fibers are processed in sequence through coarse yarn, spun yarn, winding and doubling to obtain the heat-storage and thermal insulation fiber / hollow polyester fiber / wool fiber blended yarn.

[0045] The preparation method of the heat-storing, warmth-retaining and velvet-locking layered fabric comprises the following steps: The heat storage and warmth retaining fiber / hollow polyester fiber / wool fiber blended yarn is warp-woven to obtain a fabric; the obtained fabric is then dyed and finished to obtain the heat storage and warmth retaining fabric; Then, one side of the heat-storage and warmth-keeping fabric is subjected to a napping treatment to obtain the heat-storage and warmth-keeping velvet layer; The side of the heat-storage, warmth-keeping and locking fleece layer that has not been napped is hot-pressed with the lining cloth layer using dot-shaped hot melt adhesive, and then the side of the composite fabric away from the heat-storage, warmth-keeping and locking fleece layer is hot-pressed with the skin-friendly layer using dot-shaped hot melt adhesive.

[0046] Example 5: A heat-storage, warmth-keeping, and heat-locking fleece layer, comprising, from the inside to the outside, a skin-friendly layer, a lining layer, and a heat-storage, warmth-keeping, and heat-locking fleece layer. The heat-storage, warmth-keeping, and heat-locking fleece layer is prepared by napping the heat-storage, warmth-keeping, and heat-locking fleece fabric. The weight of the heat-storage, warmth-keeping, and heat-locking fleece layer is 200 g / m 2 The skin-friendly layer is made of modal fabric, and the weight of modal fabric is 130g / m 2 The bile layer is nylon bile cloth, and the weight of nylon bile cloth is 160g / m 2 .

[0047] The yarn used to weave the heat-storage and thermal insulation fabric is a blended yarn of heat-storage and thermal insulation fiber / hollow polyester fiber / wool fiber; in the blended yarn of heat-storage and thermal insulation fiber / hollow polyester fiber / wool fiber, the blending ratio of the heat-storage and thermal insulation fiber is 30%, the blending ratio of the hollow polyester fiber is 50%, and the blending ratio of the wool fiber is 20%.

[0048] Among them, the heat-storage and heat-insulating fiber is prepared by the method in Example 1, and the linear density of the heat-storage and heat-insulating fiber is 60 dtex and the length is 38 mm; the linear density of the hollow polyester fiber is 28 dtex and the length is 51 mm.

[0049] The preparation method of the heat-storage and heat-retaining fiber / hollow polyester fiber / wool fiber blended yarn and the preparation method of the heat-storage and heat-retaining velvet layered fabric are basically the same as those in Example 4.

[0050] Example 6: A heat-storage, warmth-keeping, and lock-in velvet layered fabric, comprising, from the inside to the outside, a skin-friendly layer, a lining layer, and a heat-storage, warmth-keeping, and lock-in velvet layer. The heat-storage, warmth-keeping, and lock-in velvet layer is prepared by napping the heat-storage, warmth-keeping, and lock-in velvet fabric. The weight of the heat-storage, warmth-keeping, and lock-in velvet layer is 230 g / m 2 The skin-friendly layer is made of modal fabric, and the weight of modal fabric is 130g / m 2 The bile layer is nylon bile cloth, and the weight of nylon bile cloth is 160g / m 2 .

[0051] The yarn used to weave the heat-storage and thermal insulation fabric is a blended yarn of heat-storage and thermal insulation fiber / hollow polyester fiber / wool fiber; in the blended yarn of heat-storage and thermal insulation fiber / hollow polyester fiber / wool fiber, the blending ratio of the heat-storage and thermal insulation fiber is 25%, the blending ratio of the hollow polyester fiber is 45%, and the blending ratio of the wool fiber is 30%.

[0052] Among them, the heat-storage and heat-insulating fiber is prepared by the method in Example 2, and the linear density of the heat-storage and heat-insulating fiber is 80 dtex and the length is 38 mm; the linear density of the hollow polyester fiber is 20 dtex and the length is 51 mm.

[0053] The preparation method of the heat-storage and heat-retaining fiber / hollow polyester fiber / wool fiber blended yarn and the preparation method of the heat-storage and heat-retaining velvet layered fabric are basically the same as those in Example 4.

[0054] Example 7: A heat-storage, warmth-keeping, and lock-in velvet layered fabric, comprising, from the inside to the outside, a skin-friendly layer, a lining layer, and a heat-storage, warmth-keeping, and lock-in velvet layer. The heat-storage, warmth-keeping, and lock-in velvet layer is prepared by napping the heat-storage, warmth-keeping, and lock-in velvet fabric. The weight of the heat-storage, warmth-keeping, and lock-in velvet layer is 230 g / m 2 The skin-friendly layer is made of modal fabric, and the weight of modal fabric is 130g / m 2 The bile layer is nylon bile cloth, and the weight of nylon bile cloth is 160g / m 2 .

[0055] The yarn used to weave the heat-storage and thermal insulation fabric is a blended yarn of heat-storage and thermal insulation fiber / hollow polyester fiber / wool fiber; in the blended yarn of heat-storage and thermal insulation fiber / hollow polyester fiber / wool fiber, the blending ratio of the heat-storage and thermal insulation fiber is 20%, the blending ratio of the hollow polyester fiber is 50%, and the blending ratio of the wool fiber is 30%.

[0056] Among them, the heat-storage and heat-insulating fiber is prepared by the method in Example 2, and the linear density of the heat-storage and heat-insulating fiber is 80 dtex and the length is 38 mm; the linear density of the hollow polyester fiber is 20 dtex and the length is 51 mm.

[0057] The preparation method of the heat-storage and heat-retaining fiber / hollow polyester fiber / wool fiber blended yarn and the preparation method of the heat-storage and heat-retaining velvet layered fabric are basically the same as those in Example 4.

[0058] Example 8: A heat-storage, warmth-keeping, and heat-locking fleece layer, comprising, from the inside to the outside, a skin-friendly layer, a lining layer, and a heat-storage, warmth-keeping, and heat-locking fleece layer. The heat-storage, warmth-keeping, and heat-locking fleece layer is prepared by napping the heat-storage, warmth-keeping, and heat-locking fleece fabric. The weight of the heat-storage, warmth-keeping, and heat-locking fleece layer is 212 g / m 2 The skin-friendly layer is made of modal fabric, and the weight of modal fabric is 130g / m 2 The bile layer is nylon bile cloth, and the weight of nylon bile cloth is 160g / m 2 .

[0059] The yarn used to weave the heat-storage and thermal insulation fabric is a blended yarn of heat-storage and thermal insulation fiber / hollow polyester fiber / wool fiber; in the blended yarn of heat-storage and thermal insulation fiber / hollow polyester fiber / wool fiber, the blending ratio of the heat-storage and thermal insulation fiber is 35%, the blending ratio of the hollow polyester fiber is 40%, and the blending ratio of the wool fiber is 25%.

[0060] Among them, the heat-storage and heat-insulating fiber is prepared by the method in Example 3, and the heat-storage and heat-insulating fiber has a linear density of 50 dtex and a length of 38 mm; the hollow polyester fiber has a linear density of 20 dtex and a length of 51 mm.

[0061] The preparation method of the heat-storage and heat-retaining fiber / hollow polyester fiber / wool fiber blended yarn and the preparation method of the heat-storage and heat-retaining velvet layered fabric are basically the same as those in Example 4.

[0062] Example 9: A down jacket comprises an outer fabric, an inner fabric, and a down layer arranged between the outer fabric and the inner fabric, wherein the inner fabric is the heat-storing, warmth-keeping, and down-locking layered fabric of any one of Examples 4 to 8, and the napped side of the heat-storing, warmth-keeping, and down-locking layered fabric faces the down layer.

[0063] Comparative Example 1: Different from Example 8, when preparing the heat storage agent in the heat storage and thermal insulation fiber, nano molybdenum disulfide is not used. The preparation method of the heat storage agent specifically includes the following steps: (1) Add polyethylene glycol 4000 to water, heat it to 60°C, then add sodium carboxymethyl cellulose, and disperse it ultrasonically for 3 hours while stirring to obtain a polyethylene glycol dispersion; in the polyethylene glycol dispersion, the mass fraction of polyethylene glycol 4000 is 10%; the mass fraction of sodium carboxymethyl cellulose is 0.8%.

[0064] (2) While stirring the porous silica microspheres (particle size of 0.5-1.5 μm), a portion of the polyethylene glycol dispersion is sprayed into them. After the polyethylene glycol dispersion is completely adsorbed by the porous silica microspheres, it is placed in a vacuum dryer at 43°C to remove moisture.

[0065] (3) Repeat step (2) until the polyethylene glycol dispersion is sprayed completely, and then remove the water by vacuum drying to obtain porous silica microspheres loaded with polyethylene glycol; The total mass of the polyethylene glycol dispersion used is 3 times the mass of the porous silica microspheres.

[0066] (4) Adding nano-metal silver (with a particle size of 10-30 nm) to silica sol with a solid content of 25% (the particle size of silica in the silica sol is 20-50 nm), with a mass ratio of silica sol to nano-metal silver being 100:1, and performing ultrasonic dispersion while stirring to obtain a mixture, wherein the amount of silica sol used is 28% of the mass of the porous silica microspheres; adding the mixture to the porous silica microspheres loaded with polyethylene glycol obtained by the treatment in step (3), mixing evenly, and then standing for 4 hours, and then vacuum drying at 45°C for 70 hours to obtain the heat storage agent.

[0067] Comparative Example 2: The difference from Example 8 is that when preparing the heat storage agent in the heat storage and warmth fiber, nano molybdenum disulfide (particle size of 5-15 nm) is replaced by nano molybdenum trioxide (particle size of 5-15 nm).

[0068] The remaining preparation steps are basically the same as those in Example 8.

[0069] Comparative Example 3: The difference from Example 8 is that when preparing the heat storage agent in the heat storage and warmth fiber, nano molybdenum disulfide (particle size of 5-15 nm) is replaced by nano titanium dioxide (particle size of 5-15 nm).

[0070] The remaining preparation steps are basically the same as those in Example 8.

[0071] Comparative Example 4: The difference from Example 8 is that when preparing the heat storage agent in the heat storage and warmth fiber, nano molybdenum disulfide (particle size of 5-15 nm) is replaced by nano zinc oxide (particle size of 5-15 nm).

[0072] The remaining preparation steps are basically the same as those in Example 8.

[0073] Comparative Example 5: The difference from Example 8 is that the heat storage agent in the heat storage and warmth retaining fiber is replaced with porous silica microspheres.

[0074] Performance testing: The thermal insulation rates of the heat-storage, heat-retaining, and heat-locking fleece fabrics in Examples 4-8 were tested according to the method in GB / T 35762-2017. The antibacterial properties of the heat-storage, heat-retaining, and heat-locking fleece fabrics were tested according to GB / T 20944.3-2008, Evaluation of Antibacterial Properties of Textiles, Part 3: Oscillation Method. The specific test results are shown in Table 1.

[0075] Table 1 Performance test results of heat-storing, warmth-retaining and velvet-locking layered fabrics Insulation rate / % Escherichia coli inhibition rate / % Staphylococcus aureus inhibition rate / % Example 4 35.9 96.6 97.3 Example 5 35.0 95.2 96.3 Example 6 33.0 95.9 95.9 Example 7 33.3 96.4 97.5 Example 8 33.9 96.0 96.6 Comparative Example 1 28.8 95.6 96.0 Comparative Example 2 30.2 95.9 96.8 Comparative Example 3 29.7 96.5 97.0 Comparative Example 4 29.4 96.3 96.8 Comparative Example 5 22.2 95.7 96.3 As shown in Table 1, the layered fabric of heat-storage, heat-insulating and lock-in velvet prepared in the embodiment of the present invention has high heat-insulating and antibacterial properties. As shown by comparison between Comparative Example 1 and Example 8, if the heat storage agent used does not contain nano-molybdenum disulfide, the heat-insulating performance of the fabric is significantly reduced. As shown by comparison between Comparative Examples 2 to 4, if the nano-molybdenum disulfide in the heat storage agent is replaced by nano-molybdenum trioxide, nano-titanium dioxide, and nano-zinc oxide, the heat-insulating effect is reduced. It can be seen that nano-molybdenum disulfide and polyvinyl alcohol have an excellent synergistic effect. As shown by comparison between Comparative Example 1 and Example 8, if the heat storage agent is replaced by porous silica microspheres, the heat-insulating performance of the fabric is significantly reduced.

[0076] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A heat-storing, warm-keeping, and velvet-locking layered fabric, characterized in that: The heat-storage and heat-insulating layered fabric comprises, from the inside to the outside, a skin-friendly layer, a lining layer, and a heat-storage and heat-insulating layer. The heat-storage and heat-insulating layer is prepared by napping the heat-storage and heat-insulating fabric. The yarn used to weave the heat-storage and heat-insulating fabric is a blended yarn of heat-storage and heat-insulating fiber / hollow polyester fiber / wool fiber. The blending ratio of the heat-storage and heat-retaining fiber / hollow polyester fiber / wool fiber blended yarn is 20-40%, the blending ratio of the hollow polyester fiber is 30-50%, and the blending ratio of the wool fiber is 20-30%. The heat-storage and thermal insulation fiber comprises the following raw materials in the following weight percentages: 96.7-97.5% polyester and 2.5-3.3% heat storage agent. The preparation method of the heat storage agent comprises the following steps: firstly using porous silica microspheres to load polyethylene glycol / nano-molybdenum disulfide composite materials, then mixing the composite materials with a mixture containing silica sol and nano-metal silver, and obtaining the heat storage agent after vacuum drying.

2. The heat-storing, warmth-retaining, and lock-in velvet layered fabric according to claim 1, characterized in that: The molecular weight of the polyethylene glycol is 4000-6000; the particle size of the nano-molybdenum disulfide is 5-15 nm; the particle size of the porous silica microspheres is 0.5-1.5 μm; and in the polyethylene glycol / nano-molybdenum disulfide composite material, the mass ratio of polyethylene glycol to nano-molybdenum disulfide is 10-15:0.5-1.

3. The heat-storing, warmth-retaining, and lock-in velvet layered fabric according to claim 1, characterized in that: The solid content of the silica sol is 25-30%, the particle size of silicon dioxide in the silica sol is 20-50 nm; the particle size of the nano-metal silver is 10-30 nm, and the mass ratio of the silica sol to the nano-metal silver in the mixture is 100:0.5-1; The amount of the silica sol used is 25-30% of the mass of the porous silica microspheres.

4. The heat-storing, warmth-retaining, and lock-in velvet layered fabric according to any one of claims 1 to 3, characterized in that: The preparation method of the heat storage agent specifically comprises the following steps: (1) Add polyethylene glycol to water, heat it to 60-70°C, then add nano-molybdenum disulfide and sodium carboxymethyl cellulose, and disperse them by ultrasonication while stirring to obtain a polyethylene glycol / nano-molybdenum disulfide mixed dispersion; In the polyethylene glycol / nano-molybdenum disulfide mixed dispersion, the mass fraction of the polyethylene glycol is 10-15%; the mass fraction of the nano-molybdenum disulfide is 0.5-1%; and the mass fraction of the sodium carboxymethyl cellulose is 0.5-1%. (2) spraying a portion of the polyethylene glycol / nano-MoS2 mixed dispersion onto the porous silica microspheres while stirring them, and after the polyethylene glycol / nano-MoS2 mixed dispersion is completely adsorbed by the porous silica microspheres, vacuum drying is performed at 40-45°C to remove moisture; (3) Repeat step (2) until the polyethylene glycol / nano-MoS2 mixed dispersion is sprayed completely, and then vacuum-dry to remove moisture, thereby obtaining porous silica microspheres loaded with polyethylene glycol / nano-MoS2 composite materials; The mass of the polyethylene glycol / nano-molybdenum disulfide mixed dispersion is 2.4 to 3.2 times the mass of the porous silica microspheres; (4) Adding nano-metal silver to the silica sol, and performing ultrasonic dispersion while stirring to obtain a mixture; adding the mixture to the porous silica microspheres loaded with polyethylene glycol / nano-molybdenum disulfide composite material obtained by the treatment in step (3), mixing evenly, and then standing, and then placing it at 40-45° C. and vacuum drying for 60-80 hours while stirring, and obtaining the thermal storage agent after dispersion.

5. The heat-storing, warmth-retaining, and lock-in velvet layered fabric according to any one of claims 1 to 3, characterized in that: The preparation method of the heat-storage and heat-insulating fiber comprises the following steps: uniformly mixing polyester and a heat-storage agent, performing blending, melt extrusion and granulation by a twin-screw extruder, then performing melt spinning, and finally performing ring-blowing cooling, winding, bundling, drawing, tension heat setting, curling, oiling, relaxation heat setting, and cutting to obtain the heat-storage and heat-insulating fiber.

6. The heat-storing, warmth-retaining, and lock-in velvet layered fabric according to any one of claims 1 to 3, characterized in that: The heat storage and warmth retaining fiber has a linear density of 50-80 dtex and a length of 38-51 mm; the hollow polyester fiber has a linear density of 20-28 dtex and a length of 38-51 mm.

7. The heat-storing, warmth-retaining, and lock-in velvet layered fabric according to any one of claims 1 to 3, characterized in that: The weight of the heat storage and warmth locking fleece layer is 200-230 g / m 2 The skin-friendly layer is one of cotton fiber fabric, modal fabric, and Tencel fabric, and the weight of the skin-friendly layer is 120~160g / m 2 The bile cloth layer is nylon bile cloth or polyester bile cloth, and the weight of the bile cloth layer is 150~180g / m 2 .

8. The heat-storing, warmth-retaining, and lock-in velvet layered fabric according to any one of claims 1 to 3, characterized in that: The preparation method of the heat storage and warmth retaining fiber / hollow polyester fiber / wool fiber blended yarn comprises the following steps: The heat-storage and thermal insulation fiber, hollow polyester fiber and wool fiber are weighed according to the ratio, and then the cotton is cleaned and carded to prepare the heat-storage and thermal insulation fiber strips and hollow polyester fiber / wool fiber mixed strips; the heat-storage and thermal insulation fiber strips and hollow polyester fiber / wool fiber mixed strips are then drawn together to obtain mixed fiber strips; and then the fibers are processed in sequence through coarse yarn, spun yarn, winding and doubling to obtain the heat-storage and thermal insulation fiber / hollow polyester fiber / wool fiber blended yarn.

9. The heat-storing, warmth-retaining, and lock-in velvet layered fabric according to any one of claims 1 to 3, characterized in that: The preparation method of the heat-storing, warmth-retaining and velvet-locking layered fabric comprises the following steps: The heat storage and warmth retaining fiber / hollow polyester fiber / wool fiber blended yarn is warp-woven to obtain a fabric; the obtained fabric is then dyed and finished to obtain the heat storage and warmth retaining fabric; Then, one side of the heat-storage and warmth-keeping fabric is subjected to a napping treatment to obtain the heat-storage and warmth-keeping velvet layer; The side of the heat-storage, warmth-keeping and locking fleece layer that has not been napped is hot-pressed with the lining cloth layer using dot-shaped hot melt adhesive, and then the side of the composite fabric away from the heat-storage, warmth-keeping and locking fleece layer is hot-pressed with the skin-friendly layer using dot-shaped hot melt adhesive.

10. A down jacket comprising an outer fabric, an inner fabric, and a down layer disposed between the outer fabric and the inner fabric, characterized in that: The inner layer fabric is a heat-storing, warmth-keeping, and down-locking layered fabric according to any one of claims 1 to 9, and the napped side of the heat-storing, warmth-keeping, and down-locking layered fabric faces the down layer.