A special-shaped cross-section fiber composite fabric, its preparation method and application

Abstract

The present invention provides a special-shaped cross-section fiber composite fabric, a preparation method thereof and an application. The special-shaped cross-section fiber composite fabric comprises an elastic polyurethane polymer layer, a special-shaped cross-section fiber fabric layer, a waterproof and moisture-permeable layer and a hydrophilic group layer which are arranged in sequence. The composite fabric provided by the present invention uses the special-shaped cross-section fiber fabric as the core heat-preserving fabric layer, which is light in texture and good in heat storage effect. The elastic polyurethane polymer layer improves the fabric's resilience, avoids fiber breakage when being stretched, and makes the whole fabric softer. The heat storage and heat preservation effect is improved by 30%. At the same time, multiple functional layers are compounded for multi-effect protection, improving the plump structure and waterproof and moisture-permeable performance of the fabric.

Description

Technical Field

[0001] The present invention belongs to the technical field of textiles, and particularly relates to a profiled cross-section fiber composite fabric, a preparation method thereof, and an application thereof. Background Art

[0002] With the progress of society and the improvement of people's living standards, people's requirements for clothing fabric materials are gradually developing towards functionalization, such as lightweight, comfort, protection, etc. This has led to more refined demands for new fibers, and at the same time, towards differentiation and functionalization, thus promoting the development of various new fiber materials in recent years.

[0003] Outdoor sportswear is required to have good protection and comfort. For autumn and winter clothing, windproof, heat storage, and warmth retention are key attributes. Traditional winter cold protection mostly relies on clothing such as cotton-padded clothes and down jackets, which have the defects of being bulky, cumbersome, and lacking in beauty. Consumers' requirements for the functionality, lightness, and fashionability of textile clothing are getting higher and higher. Relying solely on increasing or decreasing the thickness of clothing to obtain a warming effect can no longer meet people's needs. Therefore, developing clothing fabrics with heat storage, warmth retention, lightness, breathability, comfort, and certain rain and snow protection functionality has become a hot topic in the development of textile warm clothing. Summary of the Invention

[0004] The purpose of the present invention is to provide a profiled cross-section fiber composite fabric, a preparation method thereof, and an application thereof, so that the composite fabric meets the functional requirements of heat storage and insulation and lightweight.

[0005] To achieve the purpose of this invention, the following technical solutions are adopted in the present invention:

[0006] In a first aspect, the present invention provides a profiled cross-section fiber composite fabric, which comprises an elastic polyurethane polymer layer, a profiled cross-section fiber fabric layer, a waterproof and breathable layer, and a hydrophilic group layer arranged in sequence.

[0007] The composite fabric provided by the present invention uses the profiled cross-section fiber fabric as the core heat preservation fabric layer, which is light in texture and has good heat storage effect. It is compounded with the elastic polyurethane polymer layer to improve the strength and softness of the fabric. On the other side of the fabric layer, a waterproof and breathable layer and a hydrophilic group layer are arranged. The protection on both sides of the fabric layer provides multi-effect protection for the heat preservation fabric, enhancing the overall plump structure and waterproof and breathable function of the fabric.

[0008] Preferably, the elastic polyurethane polymer layer comprises an elastic TPE layer and a flexible layer coated on the elastic TPE layer, and the flexible layer is coated on the side of the elastic TPE layer adjacent to the multi-grooved cross-section fiber fabric layer.

[0009] Preferably, the elastic TPE layer is made of profiled cross-section fiber Oxford fabric.

[0010] Preferably, the material of the flexible layer is thermoplastic polyurethane.

[0011] Preferably, the profiled cross-section fiber composite fabric further includes an aerogel particle layer, and the aerogel particle layer is disposed between the elastic polyurethane polymer layer and the multi-grooved cross-section fiber fabric layer.

[0012] Preferably, the waterproof and moisture-permeable layer is a TPE waterproof and moisture-permeable membrane.

[0013] Preferably, the hydrophilic group layer is a skin-friendly siphon material.

[0014] In a second aspect, the present invention provides a method for preparing the profiled cross-section fiber composite fabric described in the first aspect, and the preparation method includes the following steps:

[0015] Respectively prepare a profiled cross-section fiber fabric layer, an elastic polyurethane polymer layer, a waterproof and moisture-permeable layer, and a hydrophilic group layer, and then use a moisture-curing hot melt adhesive to bond and cure and age each layer of the fabric.

[0016] Preferably, the coverage area of the moisture-curing hot melt adhesive is 20-65% of the fabric layer, for example, it can be 20%, 30%, 40%, 50%, 60% or 65%, but is not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0017] Preferably, the dispensing amount of the moisture-curing hot melt adhesive is 3-15 g / m 2 , for example, it can be 3 g / m 2 , 5 g / m 2 , 8 g / m 2 , 10 g / m 2 , 12 g / m 2 or 15 g / m 2 , but is not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0018] Preferably, the temperature of the curing and aging is 45-60 °C, for example, it can be 45 °C, 50 °C, 55 °C or 60 °C, but is not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0019] Preferably, the humidity of the curing and aging is 50-80%, for example, it can be 50%, 60%, 70% or 80%, but is not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0020] Preferably, the time of the curing and aging is 12-48 h, for example, it can be 12 h, 18 h, 24 h, 30 h, 36 h, 42 h or 48 h, but is not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0021] Preferably, the preparation process of the profiled cross-section fiber fabric layer includes:

[0022] (1) Mix polydopamine polymer infrared absorption material, polypyrrole, and ceramicized light-absorbing and heat-storing metal powder with polyester chips, and bake and melt to form a mixed material. Among them, the mass ratio of polydopamine polymer infrared absorption material, polypyrrole, and ceramicized light-absorbing and heat-storing metal powder in the mixed material is 2-12%;

[0023] (2) Mix the mixed material and the spinning solution evenly at a volume ratio of 1:(8-16) to form a mixed material to be melted;

[0024] (3) Spin the mixed material to be melted through a profiled spinneret at a temperature of 205-230°C, cool with air, draw 3-5 times at 105-135°C, and then perform texturing using the air microspray side fluffing process;

[0025] (4) The obtained profiled textured yarn of 50-150D is subjected to ionization electrostatic elimination warping and water jet weaving to obtain a grey cloth base;

[0026] (5) Cold pad-batch desizing and scouring are carried out on the grey cloth. Among them, the concentration of the alkali solution is 2-5 g / L, the dosage of the degreasing agent is 0.5-2%, the temperature is 30-60°C, and then alkali weight reduction treatment, dyeing and finishing, rubbing and washing, and drying on the cylinder are carried out;

[0027] (6) Carry out fluorocarbon waterproof finishing with a coating dosage of 3-8%, and then carry out heat-stable baking and width expanding and setting at 130-180°C and a speed of 30-70 m / min.

[0028] Among them, the mass ratio of polydopamine polymer infrared absorption material, polypyrrole, and ceramicized light-absorbing and heat-storing metal powder in the mixed material is 2-12%, for example, it can be 2%, 4%, 5%, 6%, 8%, 10%, or 12%, but is not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0029] Among them, the volume ratio of the mixed material and the spinning solution is 1:(8-16), for example, it can be 1:8, 1:10, 1:12, 1:14, 1:15, or 1:16, but is not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0030] Among them, the temperature of the spinning is 205-230°C, for example, it can be 205°C, 210°C, 215°C, 220°C, 225°C, or 230°C, but is not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0031] Among them, the temperature of the drawing is 105-135°C, for example, it can be 105°C, 110°C, 115°C, 120°C, 125°C, 130°C or 135°C, but not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0032] Among them, the concentration of the lye is 2-5 g / L, for example, it can be 2 g / L, 3 g / L, 4 g / L or 5 g / L, but not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0033] Among them, the dosage of the degreasing agent is 0.5-2%, for example, it can be 0.5%, 1%, 1.5% or 2%, but not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0034] Among them, the temperature of the cold pad-batch desizing and scouring is 30-60°C, for example, it can be 30°C, 35°C, 40°C, 45°C, 50°C, 55°C or 60°C, but not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0035] Among them, the alkali weight reduction rate of the alkali weight reduction treatment is 5-10%, for example, it can be 5%, 6%, 7%, 8%, 9% or 10%, but not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0036] Among them, the coating dosage of the fluorocarbon waterproof finishing is 3-8%, for example, it can be 3%, 4%, 5%, 6%, 7% or 8%, but not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0037] Among them, the temperature of the baking, stretching and setting is 130-180°C, for example, it can be 130°C, 140°C, 150°C, 160°C, 170°C or 180°C, but not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0038] Among them, the speed of the baking, stretching and setting is 30-70 m / min, for example, it can be 30 m / min, 40 m / min, 50 m / min, 60 m / min or 70 m / min, but not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0039] Preferably, the preparation process of the hydrophilic group layer includes: mixing 10-90% of elastic polyurethane, polyester masterbatch material and hydrophilic ethylene alcohol acrylic polymer, carrying out premixing and melting, adding an antiblocking agent, extruding and blowing to form a film, and then carrying out surface treatment, curing and frosting atomization, and controlling the layer thickness to be 0.03-0.3 mm.

[0040] Among them, the layer thickness is controlled to be 0.03 - 0.3 mm. For example, it can be 0.03 mm, 0.05 mm, 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm or 0.3 mm, but is not limited to the listed values. Other unlisted values within the numerical range are equally applicable.

[0041] In a third aspect, the present invention provides an application of the profiled cross-section fiber composite fabric described in the first aspect, and the profiled cross-section fiber composite fabric is used for the fabric of down garments.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] The composite fabric provided by the present invention uses the profiled cross-section fiber fabric as the core heat-preserving fabric layer, which is light in texture and has good heat storage effect. The elastic polyurethane polymer layer improves the fabric's resilience, avoids fiber breakage when stretched, and makes the overall fabric softer. The heat storage and heat preservation effect is increased by 30%. At the same time, multiple functional layers are compounded for multi-effect protection, improving the plump structure and waterproof and moisture-permeable performance of the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a schematic cross-sectional structure diagram of the profiled cross-section fiber composite fabric provided in Example 1;

[0045] Among them, 1, profiled cross-section fiber fabric layer; 2, aerogel particle layer; 31, elastic TPE layer; 32, flexible layer; 4, waterproof and moisture-permeable layer; 5, hydrophilic group layer;

[0046] Figure 2 is a cross-sectional view of the profiled cross-section fiber provided in Example 1. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0047] The technical solutions of the present invention will be further described below through specific embodiments. Those skilled in the art should understand that the embodiments are only for helping to understand the present invention and should not be regarded as specific limitations on the present invention.

[0048] Example 1

[0049] This example provides a profiled cross-section fiber composite fabric as Figure 1 shown. The profiled cross-section fiber composite fabric includes an elastic polyurethane polymer layer 3, an aerogel particle layer 2, a profiled cross-section fiber fabric layer 1, a waterproof and moisture-permeable layer 4, and a hydrophilic group layer 5 arranged in sequence;

[0050] The elastic polyurethane polymer layer 3 includes an elastic TPE layer 31 and a flexible layer 32 coated on the elastic TPE layer. The elastic TPE layer 31 is made of profiled cross-section fiber Oxford fabric, and the flexible layer 32 is thermoplastic polyurethane;

[0051] The material of the aerogel particle layer 2 is inorganic nano-silica LS125 with a thermal conductivity of 0.018;

[0052] The fiber cross-sectional shape of the special-shaped cross-section fiber fabric layer 1 is as Figure 2 shown;

[0053] The waterproof and moisture-permeable layer 4 is a TPE waterproof and moisture-permeable membrane, and the material is HB 2007 polyurethane;

[0054] The hydrophilic group layer 5 is a skin-friendly siphon material, and the material includes vinyl alcohol-acrylic polymer.

[0055] The preparation method of the special-shaped cross-section fiber composite fabric is as follows:

[0056] (1) Preparation of the multi-groove cross-section fiber fabric:

[0057] (1.1) Mix polydopamine polymer infrared absorption material, polypyrrole, and ceramicized light-absorbing and heat-storing metal powder with polyester chips, and bake and melt to form a mixed material. The mass ratio of polydopamine polymer infrared absorption material, polypyrrole, and ceramicized light-absorbing and heat-storing metal powder in the mixed material is 8%;

[0058] (1.2) Mix the obtained mixed material with the spinning solution at a volume ratio of 1:12 and mix evenly to form a mixed material to be melted;

[0059] (1.3) When the mixed material to be melted passes through a special multi-petal-shaped spinneret, spin at 220 °C, cool with strong wind for pre-shaping, draw 4 times at 120 °C, and then complete texturing by adopting the new process of air micro-spraying for lateral fluffing;

[0060] (1.4) The deformed 100D textured yarn is warped by ionization electrostatic elimination and woven into a grey cloth base by spraying water;

[0061] (1.5) The obtained grey cloth base is treated with 3 g / L lye, 1% degreasing agent, cold pad-batch desizing and scouring at 50 °C for 24 hours, and then subjected to in-vat alkali weight reduction treatment with low liquor ratio, and the alkali weight reduction rate is 8%. After dyeing, finishing, rubbing and color fixing, it is dried by a cylinder;

[0062] (1.6) After the fabric is treated again to wash and remove the surface porous hydrophilic redundant material, it is then subjected to durable fluorocarbon waterproof finishing with a dosage of 5%, and heat-stabilized baking and width expanding and shaping are carried out at a temperature of 150 °C and a speed of 50 m / min to obtain a special-shaped cross-section fiber fabric;

[0063] (2) Preparation of the hydrophilic group layer:

[0064] (2.1) Mechanically mix 50% elastic polyurethane, polyester masterbatch material, and high-temperature ultra-hydrophilic vinyl alcohol-acrylic polymer;

[0065] (2.2) Premix and melt according to the resin softening temperature, add an antiblocking agent, and directly extrude and blow mold into a film;

[0066] (2.3) Treat the film by surface treatment, curing, sandblasting and atomization in 1 - 2 layers, and control the film thickness at 0.1 mm to obtain a film with better extensibility elasticity, tear resistance toughness, and controllable transparent or white shielding performance;

[0067] (3) After the profiled cross - section fiber fabric is loosened by a self - guiding roller, keep it in a tension - free stretching state;

[0068] (4) Use a one - component, solvent - free residue, 100% solid content hot melt adhesive. After vacuum heating at 100 °C to form a glue slurry, evenly coat 40% of the glue liquid on the fabric layer through a precision engraved roller, and control the glue application amount at 10 g / m 2 , coat the aerogel particle solution on the thermoplastic polyurethane layer, and sequentially laminate each layer;

[0069] (5) Use quantum atomization technology to form a colorless three - dimensional microscopic structural group layer outside the overall fabric with a strongly hydrophilic quaternary ammonium water - soluble polymer material, which can accelerate the rapid export of water vapor from the inside to the outside of the body when the fabric gets wet or sweaty;

[0070] (6) Age at 50 °C and 60% humidity for 36 hours to finally obtain a profiled cross - section fiber composite fabric.

[0071] The profiled cross - section fiber composite fabric provided in this embodiment uses the multi - groove cross - section fiber fabric layer as the core thermal insulation fabric layer, which is light in texture and has good heat storage effect; the multi - groove cross - section fiber Oxford fabric is a high - elasticity TPE layer, which can endow the whole with strong resilience, avoiding the breakage of the multi - groove cross - section heat - storage and heat - insulating fibers in the multi - groove cross - section fiber fabric layer when being stretched. Using the thermoplastic polyurethane layer as the flexible layer can make the whole fabric feel softer and not stiff, and the texture is 10% lighter than the conventional hollow yarn and can store more air, with the heat - storage and heat - insulating effect increased by 30%. The elastic polyurethane polymer layer plays a multi - effect protection role for the thermal insulation fabric, improving the overall plump structure and waterproof and moisture - permeable function of the fabric; the aerogel particle layer forms a honeycomb microporous structure, achieving a double - super siphon effect, with 200% more four - way groove surface area than the conventional round yarn. Further, for the ready - made garment fabric with the same yarn thickness, it is 15% lighter in weight and can store more air, achieving the heat - storage and heat - insulating function; the TPE waterproof and moisture - permeable membrane combined with the skin - feeling siphon membrane makes water molecules not easy to pass through, while human sweat vapor can pass through, further improving the waterproof and moisture - permeable performance of the composite fabric; in addition, the hydrophilic group and moisture - curing hot melt adhesive will accelerate the chain - extension reaction when encountering the moisture in the air, forming a high - adhesion structure layer of polyurethane molecular chains, combined with the coating of the waterproof and moisture - permeable glue layer, thus achieving good aging resistance, washability and comfortable durability of wearing.

[0072] Example 2

[0073] This example provides a special-shaped cross-section fiber composite fabric. Compared with Example 1, the aerogel particle layer is not provided, and the rest are the same as those in Example 1.

[0074] Example 3

[0075] This example provides a special-shaped cross-section fiber composite fabric. Compared with Example 1, the skin-feeling siphon material is replaced with a 50D conventional hydrophobic polyester material, and the rest are the same as those in Example 1.

[0076] Comparative Example 1

[0077] This comparative example provides a composite fabric. Compared with Example 1, the special-shaped cross-section fiber fabric layer is replaced with a circular cross-section yarn of the same material.

[0078] Table 1

[0079]

[0080] In summary, the composite fabric provided by the present invention uses a special-shaped cross-section fiber fabric as the core heat-preserving fabric layer, which is thinner and has a good heat storage effect. The elastic polyurethane polymer layer enhances the fabric's resilience, avoids fiber breakage when stretched, and makes the fabric more gentle as a whole. Importantly, the heat storage and insulation effect is increased by 30%. At the same time, this fabric realizes empowerment on the same technical clothing. The composite of multiple functional layers achieves multi-effect protection for consumers, enhancing the plump structure, comfortable touch, and high-efficiency waterproof and moisture permeability of the fabric.

[0081] The applicant declares that the above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention fall within the protection scope and the disclosure scope of the present invention.

Claims

1. A composite fabric of special-shaped cross-section fibers, characterized in that: The composite fabric of special-shaped cross-section fiber comprises an elastic polyurethane polymer layer, an aerogel particle layer, a special-shaped cross-section fiber fabric layer, a waterproof and breathable layer and a hydrophilic group layer arranged in sequence; The special-shaped cross-section fiber fabric layer is a multi-groove cross-section fiber fabric layer, and the raw materials of the special-shaped cross-section fiber fabric layer include polyester and polydopamine polymer infrared absorption materials, polypyrrole, and ceramic light-absorbing and heat-storing metal powder; The elastic polyurethane polymer layer includes an elastic TPE layer and a flexible layer coated on the elastic TPE layer, wherein the flexible layer is coated on one side of the elastic TPE layer adjacent to the special-shaped cross-section fiber fabric layer; the elastic TPE layer is made of multi-groove cross-section fiber Oxford fabric, and the material of the flexible layer is thermoplastic polyurethane; The hydrophilic group layer is a skin-feeling siphon material, and the hydrophilic group layer is prepared by the following method: 10-90% of elastic polyurethane, polyester masterbatch material, and hydrophilic vinyl alcohol acrylic polymer are mixed, pre-mixed and melted, an opening agent is added, and the film is formed by extrusion blow molding, and then surface treatment, aging, and frosting and atomization are performed, and the layer thickness is controlled to be 0.03-0.3 mm; The special-section fiber composite fabric is prepared by the following preparation method: a special-section fiber fabric layer, an elastic polyurethane polymer layer, a waterproof and breathable layer and a hydrophilic group layer are prepared separately, and then each fabric layer is bonded, cured and matured by using moisture-curing hot melt adhesive.

2. The special-section fiber composite fabric according to claim 1, characterized in that: The waterproof and breathable layer is a TPE waterproof and breathable membrane.

3. A method for preparing a composite fabric with a special-shaped cross-section fiber according to claim 1 or 2, characterized in that: The preparation method comprises the following steps: A special-section fiber fabric layer, an elastic polyurethane polymer layer, a waterproof and breathable layer, and a hydrophilic group layer are prepared respectively, and then moisture-curing hot melt adhesive is used to bond, cure, and mature the fabric layers.

4. The preparation method according to claim 3, characterized in that: The coverage area of ​​the moisture-curing hot melt adhesive is 20-65% of the fabric layer, and the amount of adhesive dispensed is 3-15g / m 2 .

5. The preparation method according to claim 3, characterized in that: The curing temperature is 45-60° C., the humidity is 50-80%, and the time is 12-48 hours.

6. The preparation method according to claim 3, characterized in that: The preparation process of the special-shaped cross-section fiber fabric layer includes: (1) Mixing polydopamine polymer infrared absorbing material, polypyrrole and ceramic light absorbing heat storage metal powder with polyester chips, and baking and melting to form a mixed material, wherein the mass proportion of polydopamine polymer infrared absorbing material, polypyrrole and ceramic light absorbing heat storage metal powder in the mixed material is 2-12%; (2) uniformly mixing the mixed material and the spinning solution in a volume ratio of 1:(8-16) to form a mixed melt-to-be-melted material; (3) Spinning the mixed melt material through a special-shaped spinneret at a temperature of 205-230°C, air cooling, and after being stretched 3-5 times at 105-135°C, the material is elasticized by a side fluffing process using air micro-spraying; (4) The obtained 50-150D profiled elastic yarn is subjected to ionization static elimination warping and water jet weaving to obtain a grey fabric base; (5) cold-batch annealing of the grey cloth, wherein the concentration of the alkali solution is 2-5 g / L, the amount of the degreasing agent is 0.5-2%, and the temperature is 30-60°C, followed by alkali reduction treatment, dyeing and coloring, scrubbing and cylinder drying; (6) Perform fluorocarbon waterproof finishing with a coating amount of 3-8%, and then perform heat stabilization baking at 130-180°C and a speed of 30-70 m / min to expand and shape.

7. An application of the special-section fiber composite fabric as claimed in claim 1 or 2, characterized in that: The special-section fiber composite fabric is applied to down clothing fabrics.

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