A down jacket fabric containing graphene fiber and preparation method thereof

Abstract

The invention relates to the technical field of functional fabric preparation, and discloses a down jacket fabric containing graphene fibers and a preparation method thereof. The invention comprises the following steps: mixing graphene oxide and gelatin, and subjecting the mixture to vacuum freeze-drying treatment to form a porous aerogel; then modifying the composite graphene oxide aerogel; and grafting tetraphenylethylene onto the composite aerogel, thereby improving the thermal insulation performance and wear resistance of the fabric. The invention also comprises the following steps: modifying nano-silicon dioxide, grafting hydroxyl-terminated polybutadiene onto the nano-silicon dioxide; the hydroxyl-terminated polybutadiene contains hydroxyl groups at both ends, thereby improving the dispersion performance of the nano-silicon dioxide in a finishing liquid and preventing agglomeration; and the hydroxyl-terminated polybutadiene contains an alkyl long chain structure in its molecular structure, which has good flexibility and phase change energy storage performance, thereby further improving the thermal insulation performance and wear resistance of the fabric.

Description

Technical Field

[0001] The present invention relates to the technical field of functional fabric preparation, and in particular to a down jacket fabric containing graphene fibers and a preparation method thereof. Background Art

[0002] Nylon fabrics are widely favored in down jacket production due to their exceptional lightness and warmth. However, despite their many advantages, nylon's antibacterial properties are poor, making it ineffective in inhibiting bacterial growth. Furthermore, nylon's thermal insulation is considered average, which may not provide adequate thermal protection in cold weather. Therefore, research and development of down jacket fabrics with far-infrared thermal insulation and antibacterial properties is crucial to enhance the functionality and safety of down jackets.

[0003] As an emerging functional material, graphene's unique structure gives it excellent far-infrared emission and antibacterial properties, making it a promising material for enhancing the functionality of down jacket fabrics. Despite its excellent performance as a functional material, graphene, as an inorganic nanopowder, has poor dispersibility in solutions and is prone to aggregation, hindering its application in the textile industry.

[0004] Chinese patent document CN 113995189 A discloses a method for preparing graphene antibacterial down jacket fabric. The method includes treating graphene with gallic acid or citric acid, adding an adhesive, and then adhering the modified graphene to viscose fiber or polytetrafluoroethylene fiber through heat pressing. Finally, the graphene antibacterial down jacket fabric is blended with natural fibers. However, gallic acid or citric acid are both weak acids, and the active groups on the graphene surface are very few, resulting in poor reactivity between them. Therefore, it is difficult to effectively modify graphene using gallic acid or citric acid, and the performance of the prepared down jacket fabric still needs to be further improved. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the object of the present invention is to provide a down jacket fabric containing graphene fibers and a preparation method thereof.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A method for preparing down jacket fabric containing graphene fibers comprises the following steps:

[0008] S1. Preparation of graphene composite fibers

[0009] Modified graphene oxide, maleic anhydride grafted SEBS and nylon chips are mixed and extruded into granules to obtain masterbatches, which are then melt-spun to obtain graphene composite fibers.

[0010] In this step, the mass ratio of modified graphene oxide, maleic anhydride grafted SEBS and nylon chips is 3-6:1-2:100. In some embodiments of the present invention, for example, 3:1:100, 3:1.5:100, 4:1:100, 4:2:100, 6:1:100, and 6:2:100 can be selected, but it is not limited to the listed values. Other unlisted values ​​within the numerical range are also applicable.

[0011] Specifically, the preparation method of the modified graphene oxide is as follows:

[0012] S11, ultrasonically dispersing graphene oxide in deionized water, adding sodium carboxymethyl cellulose, stirring and mixing uniformly, then adding gelatin, stirring at 85-90° C. for 2-4 hours, and ultrasonically dispersing for 30-60 minutes, vacuum freeze-drying, grinding and sieving to obtain a composite graphene oxide aerogel;

[0013] S12, dispersing the composite graphene oxide aerogel in an ethanol aqueous solution, then adding vinyltriethoxysilane thereto, stirring at room temperature for 1-2 hours, filtering, washing, and drying to obtain a vinyl-modified composite aerogel;

[0014] S13. Dispersing the vinyl-modified composite aerogel in toluene, then adding tetraphenylethylene and benzoyl peroxide thereto, heating and stirring at 70-90° C. for reaction for 3-5 hours, and after the reaction is completed, filtering, washing, drying, grinding and sieving to obtain modified graphene oxide.

[0015] On the basis of the above technical solution, specifically, in step S11, the mass ratio of graphene oxide, sodium carboxymethyl cellulose and gelatin is 10-15:4-8:5-10. For example, 10:4:5, 10:6:8, 10:8:10, 12:4:5, 12:4:8, 12:6:8, 12:8:10, 15:4:5, 15:5:10, and 15:8:10 can be selected, but the values ​​are not limited to the listed values. Other values ​​not listed within the numerical range are also applicable.

[0016] On the basis of the above technical solution, specifically, in step S12, the mass ratio of the composite graphene oxide aerogel and vinyltriethoxysilane is 10-15:1-3, for example, 10:1, 10:2, 10:3, 12:1, 12:2, 12:3, 15:1, 15:2, 15:3 can be selected, but is not limited to the listed values, and other values ​​not listed within the numerical range are also applicable.

[0017] On the basis of the above technical solution, specifically, in step S13, the mass ratio of the vinyl-modified composite aerogel, tetraphenylethylene and benzoyl peroxide is 8-12:3-6:0.5-1. For example, 8:3:0.5, 8:5:0.8, 8:6:1, 10:3:0.5, 10:5:0.8, 10:5:1, 12:6:0.5, and 12:6:1 can be selected, but are not limited to the listed values. Other values ​​not listed within the numerical range are also applicable.

[0018] In this step, graphene oxide and gelatin are mixed and subjected to vacuum freeze-drying to form a porous aerogel. At the same time, sodium carboxymethyl cellulose is added to improve the pore size distribution of the aerogel, thereby improving the thermal insulation effect of the aerogel. The composite graphene oxide aerogel is then double-bond modified, and tetraphenylethylene is grafted onto the composite aerogel through an addition reaction between the double bonds. Tetraphenylethylene contains a large amount of aromatic structures, which can significantly enhance the absorption of ultraviolet light, visible light, and near-infrared short-wave regions, thereby achieving a better thermal insulation effect.

[0019] S2. Preparation of fabric base cloth

[0020] The graphene composite fiber and polyester fiber are mixed, and then interwoven with warp and weft yarns to obtain the fabric base cloth.

[0021] In this step, the mass ratio of the graphene composite fiber to the polyester fiber is 1-2:1-2, for example, 1:1, 1:2, 1.5:1, 1.5:2, 2:1, 2:1.5 can be selected, but is not limited to the listed values, and other values ​​not listed within the numerical range are also applicable.

[0022] In this step, the linear density of the warp yarn is 15-20 tex, and the linear density of the weft yarn is 15-20 tex; the specific weaving process is: the warp yarn and the weft yarn are interwoven one above and one below each other into a plain weave, the warp yarn density is 360-365 yarns / 10 cm, and the weft yarn density is 325-330 yarns / 10 cm.

[0023] S3. Preparation of down jacket fabric

[0024] The fabric base fabric is padded in a finishing liquid, and then the padded fabric base fabric is baked, washed, and dried to obtain a down jacket fabric, wherein the finishing liquid comprises the following components in parts by weight: 60-80 parts of an aqueous polyurethane emulsion, 4-8 parts of a blocked isocyanate cross-linking agent, 2-4 parts of modified nano-silica, 2-4 parts of polyhexamethylene biguanide hydrochloride, 0.5-1 part of sodium dodecylbenzenesulfonate, and 10-15 parts of deionized water.

[0025] In this step, the preparation method of modified nano-silica is as follows:

[0026] S31, dispersing 8-12 parts of nano-silica in an ethanol aqueous solution, then adding 1-3 parts of vinyltriethoxysilane thereto, stirring at room temperature for 1-2 hours, filtering, washing, and drying to obtain vinyl-modified nano-silica;

[0027] S32. Disperse vinyl-modified nano-silica in an organic solvent, DMF, and then add terminal hydroxyl polybutadiene and benzoyl peroxide thereto. Heat and stir the mixture at 60-80°C for 2-5 hours. After the reaction is completed, filter, wash, dry, grind and sieve to obtain modified nano-silica.

[0028] On the basis of the above technical solution, specifically, in step S32, the mass ratio of vinyl-modified nano-silica, terminal hydroxyl polybutadiene and benzoyl peroxide is 5-10:2-4:0.5-1, for example, 5:2:0.5, 5:3:0.8, 5:4:1, 8:2:0.5, 8:3:0.8, 8:4:0.8, 8:4:1, 10:3:0.5, 10:4:1 can be selected, but is not limited to the listed values, and other values ​​not listed within the numerical range are also applicable.

[0029] On the basis of the above technical solution, the padding liquid rate of the fabric base cloth after padding treatment is 70-80%.

[0030] On the basis of the above technical solution, the baking temperature is 120-150°C and the drying time is 3-5 minutes.

[0031] In this step, the nano-silica is modified to graft terminal hydroxyl polybutadiene onto the nano-silica. The terminal hydroxyl polybutadiene contains hydroxyl groups at both ends, which can improve the dispersion performance of the nano-silica in the finishing liquid and avoid agglomeration. The terminal hydroxyl polybutadiene contains an alkyl long chain structure in its molecular structure. The alkyl long chain structure has good flexibility and phase change energy storage performance, further improving the thermal insulation performance of the fabric. When the fabric fiber rubs against other objects, the alkyl long chain structure on the fabric surface undergoes extrusion, denaturation and other movements, thereby reducing the friction coefficient of the fabric fiber, preventing fabric loss, and further improving the wear resistance of the fabric.

[0032] In this step, polyhexamethylene biguanide hydrochloride mainly plays an antibacterial role.

[0033] In this step, the blocked isocyanate crosslinker can coexist stably with active groups such as hydroxyl and amino groups for a long time at room temperature. After heat treatment, the isocyanate crosslinker releases -NCO groups and reacts with hydroxyl, amino and other groups to form crosslinks, so that the active ingredients in the finishing liquid can be firmly attached to the surface of the fabric. After the fabric is washed many times, the active ingredients on its surface will not be easily peeled off, so that the fabric can maintain excellent functionality for a long time.

[0034] The present invention also provides a down jacket fabric containing graphene fibers prepared by the above preparation method.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] (1) The down jacket fabric containing graphene fibers provided by the present invention is prepared by mixing graphene oxide and gelatin, and then subjecting the mixture to a vacuum freeze-drying process to form a porous aerogel. Meanwhile, sodium carboxymethyl cellulose is added to improve the pore size distribution of the aerogel, thereby improving the thermal insulation effect of the aerogel. The composite graphene oxide aerogel is then double-bonded, and tetraphenylethylene is grafted onto the composite aerogel through an addition reaction between the double bonds. The tetraphenylethylene contains a large amount of aromatic structures, which can significantly enhance the absorption of ultraviolet light, visible light, and near-infrared short-wave regions, thereby achieving a better thermal insulation effect. At the same time, the presence of the aromatic structure also improves the wear resistance of the fabric to a certain extent.

[0037] (2) The present invention modifies nano-silica and grafts terminal hydroxyl polybutadiene onto the nano-silica. The two ends of the terminal hydroxyl polybutadiene contain hydroxyl groups, which can improve the dispersion performance of the nano-silica in the finishing liquid and avoid agglomeration; the terminal hydroxyl polybutadiene molecular structure contains an alkyl long chain structure, which has good flexibility and phase change energy storage performance, further improving the thermal insulation performance of the fabric; when the fabric fiber and other objects rub against each other, the alkyl long chain structure on the fabric surface undergoes extrusion, denaturation and other movements, thereby reducing the friction coefficient of the fabric fiber, preventing fabric loss, and further improving the wear resistance of the fabric.

[0038] (3) The blocked isocyanate crosslinker provided by the present invention can coexist stably with active groups such as hydroxyl and amino groups for a long time at room temperature. After heat treatment, the isocyanate crosslinker releases -NCO groups and reacts with hydroxyl, amino and other groups to form crosslinks, so that the effective ingredients in the finishing liquid can be firmly attached to the surface of the fabric. After the fabric is washed many times, the effective ingredients on its surface will not be easily peeled off, so that the fabric can maintain excellent functionality for a long time. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below through specific preferred embodiments, but the present invention is not limited to the following embodiments.

[0040] It should be noted that, unless otherwise specified, all chemical reagents involved in the present invention were purchased through commercial channels.

[0041] The graphene oxide used in the present invention has a CAS number of 1034343-98-0, a thickness of 0.55-1.2 nm, and a layer number of 1-3 layers, which is purchased from Hubei Xinyuhong Biomedical Technology Co., Ltd.; the model of maleic anhydride grafted SEBS is XYJ12902, which is purchased from Dongguan Xingyuan Chemical Co., Ltd.; the model of nylon chips is PA6; the polyester fiber is purchased from Hangzhou Yongxing Chemical Fiber Co., Ltd.; the model of water-based polyurethane emulsion is PU667, which is purchased from Nanjing Chuhai New Materials Technology Co., Ltd.; the model of blocked isocyanate crosslinker is JL-WEB, which is purchased from Suzhou Jinyunlai Textile Auxiliary Agent Co., Ltd.; the average particle size of nanosilica is 60 nm; the CAS number of polyhexamethylene biguanide hydrochloride is 32289-58-0, which is purchased from Hubei Yamade Biomedicine Co., Ltd.; the CAS number of hydroxy-terminated polybutadiene is 69102-90-5, which is purchased from Hubei Xinyuhong Biomedical Technology Co., Ltd.

[0042] Example 1

[0043] A method for preparing down jacket fabric containing graphene fibers comprises the following steps:

[0044] S1, mixing 3 parts of modified graphene oxide, 1 part of maleic anhydride grafted SEBS and 100 parts of nylon chips, extruding and granulating to obtain a masterbatch, and then melt-spinning to obtain a graphene composite fiber;

[0045] Wherein, the preparation method of modified graphene oxide is as follows:

[0046] 10 g of graphene oxide was ultrasonically dispersed in 150 g of deionized water, 4 g of sodium carboxymethyl cellulose was added, and the mixture was stirred and mixed uniformly. Subsequently, 5 g of gelatin was added, and the mixture was stirred at 85°C for 4 h, and ultrasonically dispersed for 30 min. The mixture was freeze-dried in a vacuum and ground through a 1200 mesh sieve to obtain a composite graphene oxide aerogel.

[0047] 10 g of composite graphene oxide aerogel was dispersed in 100 mL of 80 wt% ethanol aqueous solution, and then 1 g of vinyltriethoxysilane was added thereto. The mixture was stirred at room temperature for 1 h, filtered, washed, and dried to obtain a vinyl-modified composite aerogel.

[0048] 8 g of vinyl-modified composite aerogel was dispersed in 100 mL of toluene, and then 3 g of tetraphenylethylene and 0.5 g of benzoyl peroxide were added thereto. The mixture was heated and stirred at 70°C for 5 h. After the reaction was completed, the modified graphene oxide was obtained by filtration, washing, drying, and grinding through a 1200 mesh sieve.

[0049] S2. The graphene composite fiber and the polyester fiber are mixed in a mass ratio of 1:1, and then interwoven by warp and weft, wherein the linear density of the warp is 20 tex and the linear density of the weft is 15 tex; the specific weaving process is: the warp and weft are interwoven with each other in a plain weave manner, with a warp density of 360 yarns / 10 cm and a weft density of 325 yarns / 10 cm, to obtain a fabric base fabric;

[0050] S3, padding the fabric base fabric in the finishing liquid, the bath ratio is 1-20, the padding liquid rate of the fabric base fabric after the padding treatment is 75%, and then baking the fabric base fabric after the padding treatment at a baking temperature of 120° C. and a drying time of 5 min, then washing with deionized water, and then drying at 60° C. to obtain a down jacket fabric, wherein the finishing liquid comprises the following components in parts by weight: 60 parts of an aqueous polyurethane emulsion, 4 parts of a blocked isocyanate crosslinker, 2 parts of modified nano-silica, 2 parts of polyhexamethylene biguanide hydrochloride, 0.5 parts of sodium dodecylbenzenesulfonate, and 10 parts of deionized water;

[0051] The preparation method of modified nano-silica is as follows:

[0052] 8 g of nano-silica was dispersed in 100 mL of 80 wt% ethanol aqueous solution, and then 1 g of vinyl triethoxysilane was added thereto. The mixture was stirred at room temperature for 1 h, filtered, washed, and dried to obtain vinyl-modified nano-silica.

[0053] 5 g of vinyl-modified nano-silica was dispersed in 100 mL of organic solvent DMF, and then 2 g of terminal hydroxyl polybutadiene and 0.5 g of benzoyl peroxide were added thereto. The mixture was heated and stirred at 60°C for 5 h. After the reaction was completed, the mixture was filtered, washed, dried, and ground through a 1200 mesh sieve to obtain modified nano-silica.

[0054] Example 2

[0055] A method for preparing down jacket fabric containing graphene fibers comprises the following steps:

[0056] S1, mixing 6 parts of modified graphene oxide, 2 parts of maleic anhydride grafted SEBS and 100 parts of nylon chips, extruding and granulating to obtain a masterbatch, and then melt-spinning to obtain a graphene composite fiber;

[0057] Wherein, the preparation method of modified graphene oxide is as follows:

[0058] 12 g of graphene oxide was ultrasonically dispersed in 150 g of deionized water, 6 g of sodium carboxymethyl cellulose was added, and the mixture was stirred and mixed uniformly. Subsequently, 8 g of gelatin was added, and the mixture was stirred at 90°C for 2 h, and ultrasonically dispersed for 60 min. The mixture was freeze-dried in a vacuum and ground through a 1200 mesh sieve to obtain a composite graphene oxide aerogel.

[0059] 15 g of composite graphene oxide aerogel was dispersed in 100 mL of 80 wt% ethanol aqueous solution, and then 3 g of vinyltriethoxysilane was added thereto. The mixture was stirred at room temperature for 1 h, filtered, washed, and dried to obtain a vinyl-modified composite aerogel.

[0060] 10 g of vinyl-modified composite aerogel was dispersed in 100 mL of toluene, and then 5 g of tetraphenylethylene and 0.8 g of benzoyl peroxide were added thereto. The mixture was heated and stirred at 90°C for 3 h. After the reaction was completed, the modified graphene oxide was obtained by filtering, washing, drying, and grinding through a 1200 mesh sieve.

[0061] S2. The graphene composite fiber and the polyester fiber are mixed in a mass ratio of 1.5:1, and then interwoven by warp and weft, wherein the linear density of the warp yarn is 20 tex and the linear density of the weft yarn is 15 tex; the specific weaving process is: the warp yarn and the weft yarn are interwoven with each other in a plain weave manner, the warp yarn density is 360 yarns / 10 cm, and the weft yarn density is 325 yarns / 10 cm, to obtain a fabric base fabric;

[0062] S3, padding the fabric base fabric in the finishing liquid, the bath ratio is 1-20, the padding liquid rate of the fabric base fabric after the padding treatment is 75%, and then baking the fabric base fabric after the padding treatment at a baking temperature of 120° C. and a drying time of 5 min, then washing with deionized water, and then drying at 60° C. to obtain a down jacket fabric, wherein the finishing liquid comprises the following components in parts by weight: 80 parts of an aqueous polyurethane emulsion, 6 parts of a blocked isocyanate crosslinker, 4 parts of modified nano-silica, 4 parts of polyhexamethylene biguanide hydrochloride, 1 part of sodium dodecylbenzenesulfonate, and 15 parts of deionized water;

[0063] The preparation method of modified nano-silica is as follows:

[0064] 12 g of nano-silica was dispersed in 100 mL of 80 wt% ethanol aqueous solution, and then 3 g of vinyltriethoxysilane was added thereto. The mixture was stirred at room temperature for 2 h, filtered, washed, and dried to obtain vinyl-modified nano-silica.

[0065] 8 g of vinyl-modified nano-silica was dispersed in 100 mL of organic solvent DMF, and then 3 g of terminal hydroxyl polybutadiene and 0.8 g of benzoyl peroxide were added thereto. The mixture was heated and stirred at 80°C for 2 h. After the reaction was completed, the mixture was filtered, washed, dried, and ground through a 1200 mesh sieve to obtain modified nano-silica.

[0066] Example 3

[0067] A method for preparing down jacket fabric containing graphene fibers comprises the following steps:

[0068] S1, mixing 4 parts of modified graphene oxide, 1.5 parts of maleic anhydride grafted SEBS and 100 parts of nylon chips, extruding and granulating to obtain a masterbatch, and then melt-spinning to obtain a graphene composite fiber;

[0069] Wherein, the preparation method of modified graphene oxide is as follows:

[0070] 15 g of graphene oxide was ultrasonically dispersed in 150 g of deionized water, 8 g of sodium carboxymethyl cellulose was added, and the mixture was stirred and mixed uniformly. Subsequently, 10 g of gelatin was added, and the mixture was stirred at 90°C for 2 h, and ultrasonically dispersed for 60 min. The mixture was freeze-dried in a vacuum and ground through a 1200 mesh sieve to obtain a composite graphene oxide aerogel.

[0071] 12 g of composite graphene oxide aerogel was dispersed in 100 mL of 80 wt% ethanol aqueous solution, and then 2 g of vinyltriethoxysilane was added thereto. The mixture was stirred at room temperature for 1 h, filtered, washed, and dried to obtain a vinyl-modified composite aerogel.

[0072] 12 g of vinyl-modified composite aerogel was dispersed in 100 mL of toluene, and then 6 g of tetraphenylethylene and 1 g of benzoyl peroxide were added thereto. The mixture was heated and stirred at 80°C for 4 h. After the reaction was completed, the modified graphene oxide was obtained by filtering, washing, drying, and grinding through a 1200 mesh sieve.

[0073] S2. The graphene composite fiber and the polyester fiber are mixed in a mass ratio of 1:1.5, and then interwoven by warp and weft, wherein the linear density of the warp yarn is 20 tex and the linear density of the weft yarn is 15 tex; the specific weaving process is: the warp yarn and the weft yarn are interwoven with each other in a plain weave manner, the warp yarn density is 360 yarns / 10 cm, and the weft yarn density is 325 yarns / 10 cm, to obtain a fabric base fabric;

[0074] S3, padding the fabric base fabric in the finishing liquid, the bath ratio is 1-20, the padding liquid rate of the fabric base fabric after the padding treatment is 75%, and then baking the fabric base fabric after the padding treatment at a baking temperature of 150° C. and a drying time of 3 min, then washing with deionized water, and then drying at 60° C. to obtain a down jacket fabric, wherein the finishing liquid comprises the following components in parts by weight: 70 parts of an aqueous polyurethane emulsion, 5 parts of a blocked isocyanate crosslinker, 3 parts of modified nano-silica, 2 parts of polyhexamethylene biguanide hydrochloride, 0.8 parts of sodium dodecylbenzenesulfonate, and 12 parts of deionized water;

[0075] The preparation method of modified nano-silica is as follows:

[0076] 10 g of nano-silica was dispersed in 100 mL of 80 wt% ethanol aqueous solution, and then 2 g of vinyl triethoxysilane was added thereto. The mixture was stirred at room temperature for 2 h, filtered, washed, and dried to obtain vinyl-modified nano-silica.

[0077] 10 g of vinyl-modified nano-silica was dispersed in 100 mL of organic solvent DMF, and then 4 g of terminal hydroxyl polybutadiene and 1 g of benzoyl peroxide were added thereto. The mixture was heated and stirred at 80°C for 2 h. After the reaction was completed, the mixture was filtered, washed, dried, and ground through a 1200 mesh sieve to obtain modified nano-silica.

[0078] Comparative Example 1

[0079] A method for preparing down jacket fabric containing graphene fibers comprises the following steps:

[0080] S1, mixing 3 parts of graphene oxide, 1 part of maleic anhydride grafted SEBS and 100 parts of nylon chips, extruding and granulating to obtain a masterbatch, and then melt-spinning to obtain a graphene composite fiber;

[0081] S2. The graphene composite fiber and the polyester fiber are mixed in a mass ratio of 1:1, and then interwoven by warp and weft, wherein the linear density of the warp is 20 tex and the linear density of the weft is 15 tex; the specific weaving process is: the warp and weft are interwoven with each other in a plain weave manner, with a warp density of 360 yarns / 10 cm and a weft density of 325 yarns / 10 cm, to obtain a fabric base fabric;

[0082] S3. The fabric base cloth is immersed in the finishing liquid with a bath ratio of 1-20, and the liquid padding rate of the fabric base cloth after the padding treatment is 75%. The fabric base cloth after the padding treatment is then baked at a baking temperature of 120°C and a drying time of 5 minutes. The fabric base cloth is then washed with deionized water and then dried at 60°C to obtain a down jacket fabric, wherein the finishing liquid comprises the following components in parts by weight: 60 parts of aqueous polyurethane emulsion, 4 parts of blocked isocyanate crosslinking agent, 2 parts of nano-silica, 2 parts of polyhexamethylene biguanide hydrochloride, 0.5 parts of sodium dodecylbenzenesulfonate, and 10 parts of deionized water.

[0083] Compared with Example 1, in Comparative Example 1, graphene oxide and nano-silicon dioxide were not modified.

[0084] Comparative Example 2

[0085] A method for preparing down jacket fabric containing graphene fibers comprises the following steps:

[0086] S1, mixing 3 parts of graphene oxide, 1 part of maleic anhydride grafted SEBS and 100 parts of nylon chips, extruding and granulating to obtain a masterbatch, and then melt-spinning to obtain a graphene composite fiber;

[0087] S2. The graphene composite fiber and the polyester fiber are mixed in a mass ratio of 1:1, and then interwoven by warp and weft, wherein the linear density of the warp is 20 tex and the linear density of the weft is 15 tex; the specific weaving process is: the warp and weft are interwoven with each other in a plain weave manner, with a warp density of 360 yarns / 10 cm and a weft density of 325 yarns / 10 cm, to obtain a fabric base fabric;

[0088] S3, padding the fabric base fabric in the finishing liquid, the bath ratio is 1-20, the padding liquid rate of the fabric base fabric after the padding treatment is 75%, and then baking the fabric base fabric after the padding treatment at a baking temperature of 120° C. and a drying time of 5 min, then washing with deionized water, and then drying at 60° C. to obtain a down jacket fabric, wherein the finishing liquid comprises the following components in parts by weight: 60 parts of an aqueous polyurethane emulsion, 4 parts of a blocked isocyanate crosslinker, 2 parts of modified nano-silica, 2 parts of polyhexamethylene biguanide hydrochloride, 0.5 parts of sodium dodecylbenzenesulfonate, and 10 parts of deionized water;

[0089] The preparation method of modified nano-silica is as follows:

[0090] 8 g of nano-silica was dispersed in 100 mL of 80 wt% ethanol aqueous solution, and then 1 g of vinyl triethoxysilane was added thereto. The mixture was stirred at room temperature for 1 h, filtered, washed, and dried to obtain vinyl-modified nano-silica.

[0091] 5 g of vinyl-modified nano-silica was dispersed in 100 mL of organic solvent DMF, and then 2 g of terminal hydroxyl polybutadiene and 0.5 g of benzoyl peroxide were added thereto. The mixture was heated and stirred at 60°C for 5 h. After the reaction was completed, the mixture was filtered, washed, dried, and ground through a 1200 mesh sieve to obtain modified nano-silica.

[0092] Compared with Example 1, in Comparative Example 2, the graphene oxide was not modified.

[0093] Comparative Example 3

[0094] A method for preparing down jacket fabric containing graphene fibers comprises the following steps:

[0095] S1, mixing 3 parts of modified graphene oxide, 1 part of maleic anhydride grafted SEBS and 100 parts of nylon chips, extruding and granulating to obtain a masterbatch, and then melt-spinning to obtain a graphene composite fiber;

[0096] Wherein, the preparation method of modified graphene oxide is as follows:

[0097] 10 g of graphene oxide was ultrasonically dispersed in 150 g of deionized water, 4 g of sodium carboxymethyl cellulose was added, and the mixture was stirred and mixed uniformly. Subsequently, 5 g of gelatin was added, and the mixture was stirred at 85°C for 4 h, and ultrasonically dispersed for 30 min. The mixture was freeze-dried in a vacuum and ground through a 1200 mesh sieve to obtain a composite graphene oxide aerogel.

[0098] 10 g of composite graphene oxide aerogel was dispersed in 100 mL of 80 wt% ethanol aqueous solution, and then 1 g of vinyltriethoxysilane was added thereto. The mixture was stirred at room temperature for 1 h, filtered, washed, and dried to obtain a vinyl-modified composite aerogel.

[0099] 8 g of vinyl-modified composite aerogel was dispersed in 100 mL of toluene, and then 3 g of tetraphenylethylene and 0.5 g of benzoyl peroxide were added thereto. The mixture was heated and stirred at 70°C for 5 h. After the reaction was completed, the modified graphene oxide was obtained by filtration, washing, drying, and grinding through a 1200 mesh sieve.

[0100] S2. The graphene composite fiber and the polyester fiber are mixed in a mass ratio of 1:1, and then interwoven by warp and weft, wherein the linear density of the warp is 20 tex and the linear density of the weft is 15 tex; the specific weaving process is: the warp and weft are interwoven with each other in a plain weave manner, with a warp density of 360 yarns / 10 cm and a weft density of 325 yarns / 10 cm, to obtain a fabric base fabric;

[0101] S3. The fabric base cloth is immersed in the finishing liquid with a bath ratio of 1-20, and the liquid padding rate of the fabric base cloth after the padding treatment is 75%. The fabric base cloth after the padding treatment is then baked at a baking temperature of 120°C and a drying time of 5 minutes. The fabric base cloth is then washed with deionized water and then dried at 60°C to obtain a down jacket fabric, wherein the finishing liquid comprises the following components in parts by weight: 60 parts of aqueous polyurethane emulsion, 4 parts of blocked isocyanate crosslinking agent, 2 parts of nano-silica, 2 parts of polyhexamethylene biguanide hydrochloride, 0.5 parts of sodium dodecylbenzenesulfonate, and 10 parts of deionized water.

[0102] Compared with Example 1, Comparative Example 3 did not perform modification treatment on the nano-silicon dioxide.

[0103] Comparative Example 4

[0104] A method for preparing down jacket fabric containing graphene fibers comprises the following steps:

[0105] S1, mixing 3 parts of modified graphene oxide, 1 part of maleic anhydride grafted SEBS and 100 parts of nylon chips, extruding and granulating to obtain a masterbatch, and then melt-spinning to obtain a graphene composite fiber;

[0106] Wherein, the preparation method of modified graphene oxide is as follows:

[0107] 10 g of graphene oxide was ultrasonically dispersed in 150 g of deionized water, 4 g of sodium carboxymethyl cellulose was added, and the mixture was stirred and mixed evenly. Subsequently, 5 g of gelatin was added, and the mixture was stirred at 85°C for 4 h, and then ultrasonically dispersed for 30 min. The mixture was vacuum freeze-dried and ground through a 1200 mesh sieve to obtain modified graphene oxide.

[0108] S2. The graphene composite fiber and the polyester fiber are mixed in a mass ratio of 1:1, and then interwoven by warp and weft, wherein the linear density of the warp is 20 tex and the linear density of the weft is 15 tex; the specific weaving process is: the warp and weft are interwoven with each other in a plain weave manner, with a warp density of 360 yarns / 10 cm and a weft density of 325 yarns / 10 cm, to obtain a fabric base fabric;

[0109] S3, padding the fabric base fabric in the finishing liquid, the bath ratio is 1-20, the padding liquid rate of the fabric base fabric after the padding treatment is 75%, and then baking the fabric base fabric after the padding treatment at a baking temperature of 120° C. and a drying time of 5 min, then washing with deionized water, and then drying at 60° C. to obtain a down jacket fabric, wherein the finishing liquid comprises the following components in parts by weight: 60 parts of an aqueous polyurethane emulsion, 4 parts of a blocked isocyanate crosslinker, 2 parts of modified nano-silica, 2 parts of polyhexamethylene biguanide hydrochloride, 0.5 parts of sodium dodecylbenzenesulfonate, and 10 parts of deionized water;

[0110] The preparation method of modified nano-silica is as follows:

[0111] 8 g of nano-silica was dispersed in 100 mL of 80 wt% ethanol aqueous solution, and then 1 g of vinyl triethoxysilane was added thereto. The mixture was stirred at room temperature for 1 h, filtered, washed, and dried to obtain vinyl-modified nano-silica.

[0112] 5 g of vinyl-modified nano-silica was dispersed in 100 mL of organic solvent DMF, and then 2 g of terminal hydroxyl polybutadiene and 0.5 g of benzoyl peroxide were added thereto. The mixture was heated and stirred at 60°C for 5 h. After the reaction was completed, the mixture was filtered, washed, dried, and ground through a 1200 mesh sieve to obtain modified nano-silica.

[0113] Compared with Example 1, in Comparative Example 4, the graphene oxide aerogel was not grafted with tetraphenylethylene.

[0114] The fabrics prepared in Examples 1-3 and Comparative Examples 1-4 were subjected to performance tests. The fabric sample size was 300 mm × 300 mm. The specific steps were as follows:

[0115] Thermal storage and heating performance test: Fabric samples were tested in an environment of 20°C and 65% relative humidity. A xenon arc lamp was used as the irradiation light source. The sample was irradiated with 500W light at a distance of 50cm above the center of the sample for 15 minutes. The sample temperature was measured with a temperature sensor, and the sample temperature after 15 minutes of irradiation was recorded.

[0116] Then, the fabric samples were washed 50 times using the washing method of a washing color fastness tester as a reference, and the thermal storage and heating performance of the fabric samples were retested; the test results are shown in Table 1.

[0117] Table 1 Thermal storage performance test results

[0118]

[0119]

[0120] Wear resistance test: refer to GB / T 21196-2007 "Determination of abrasion resistance of fabrics by Martindale method" standard, use YG401 flat grinding instrument under standard three-level atmospheric pressure, with pressure hammer of 250g and 240 grains / cm 2 Sandpaper, revolution number 300, use analytical balance to weigh the mass before and after grinding, calculate the mass wear loss (mg);

[0121] Then, the fabric samples were washed 50 times using the washing method of the washing color fastness tester as a reference, and the wear resistance of the fabric samples was retested; the test results are shown in Table 2.

[0122] Table 2 Wear resistance test results

[0123]

[0124] Antibacterial performance test: According to the test method of GB / T 20944.3-2008 "Evaluation of antibacterial properties of textiles Part 3: Oscillation method", the fabric samples prepared in Examples 1-3 were tested for antibacterial properties, and the test bacteria were Escherichia coli;

[0125] Then, the fabric samples were washed 50 times using the washing method of a washing color fastness tester as a reference, and the antibacterial properties of the fabric samples were retested; the test results are shown in Table 3.

[0126] Table 3 Antibacterial performance test results

[0127]

[0128] It can be seen from Table 3 that the fabric prepared by the present invention still has good antibacterial properties after being washed multiple times.

[0129] Finally, it should be noted that the above embodiments do not limit the present invention in any form. Those skilled in the art will appreciate that modifications and improvements can be made based on the present invention. Therefore, any modifications or improvements made without departing from the spirit of the present invention are intended to fall within the scope of protection claimed in the present invention.

Claims

1. A method for preparing down jacket fabric containing graphene fiber, characterized in that: The steps include: S1, mixing modified graphene oxide, maleic anhydride grafted SEBS and nylon chips, extruding and granulating to obtain masterbatch, and then melt spinning to obtain graphene composite fibers; S2, mixing the graphene composite fiber and the polyester fiber, and then interweaving the warp yarn and the weft yarn to obtain a fabric base cloth; S3, padding the fabric base fabric in a finishing solution, and then baking, washing, and drying the padded fabric base fabric to obtain a down jacket fabric, wherein the finishing solution comprises the following components in parts by weight: 60-80 parts of an aqueous polyurethane emulsion, 4-8 parts of a blocked isocyanate crosslinker, 2-4 parts of modified nano-silica, 2-4 parts of polyhexamethylene biguanide hydrochloride, 0.5-1 part of sodium dodecylbenzenesulfonate, and 10-15 parts of deionized water; Wherein, in step S1, the preparation method of modified graphene oxide is as follows: S11, ultrasonically dispersing graphene oxide in deionized water, adding sodium carboxymethyl cellulose, stirring and mixing uniformly, then adding gelatin, stirring at 85-90° C. for 2-4 hours, and ultrasonically dispersing for 30-60 minutes, vacuum freeze-drying, grinding and sieving to obtain a composite graphene oxide aerogel; S12, dispersing the composite graphene oxide aerogel in an ethanol aqueous solution, then adding vinyltriethoxysilane thereto, stirring at room temperature for 1-2 hours, filtering, washing, and drying to obtain a vinyl-modified composite aerogel; S13, dispersing the vinyl-modified composite aerogel in toluene, then adding tetraphenylethylene and benzoyl peroxide thereto, heating and stirring at 70-90° C. for a reaction of 3-5 hours, and after the reaction is completed, filtering, washing, drying, grinding and sieving to obtain modified graphene oxide; In step S3, the preparation method of modified nano-silica is as follows: S31, dispersing 8-12 parts of nano-silica in an ethanol aqueous solution, then adding 1-3 parts of vinyltriethoxysilane thereto, stirring at room temperature for 1-2 hours, filtering, washing, and drying to obtain vinyl-modified nano-silica; S32. Disperse vinyl-modified nano-silica in an organic solvent, DMF, and then add terminal hydroxyl polybutadiene and benzoyl peroxide thereto. Heat and stir the mixture at 60-80°C for 2-5 hours. After the reaction is completed, filter, wash, dry, grind and sieve to obtain modified nano-silica.

2. The preparation method according to claim 1, characterized in that In step S11, the mass ratio of graphene oxide, sodium carboxymethyl cellulose and gelatin is 10-15:4-8:5-10.

3. The preparation method according to claim 1, characterized in that In step S12, the mass ratio of the composite graphene oxide aerogel to vinyltriethoxysilane is 10-15:1-3.

4. The preparation method according to claim 1, characterized in that In step S13, the mass ratio of the vinyl-modified composite aerogel, tetraphenylethylene and benzoyl peroxide is 8-12:3-6:0.5-1.

5. The preparation method according to claim 1, characterized in that In step S1, the mass ratio of modified graphene oxide, maleic anhydride grafted SEBS and nylon chips is 3-6:1-2:

100.

6. The preparation method according to claim 1, characterized in that In step S2, the mass ratio of the graphene composite fiber to the polyester fiber is 1-2:1-2.

7. The preparation method according to claim 1, characterized in that In step S32, the mass ratio of vinyl-modified nano-silica, hydroxyl-terminated polybutadiene and benzoyl peroxide is 5-10:2-4:0.5-1.

8. A down jacket fabric containing graphene fibers prepared by the preparation method according to any one of claims 1 to 7.

Images