Preparation method of soft skin-friendly embroidery textile

Abstract

The invention provides a preparation method of a soft and skin-friendly embroidery textile, and belongs to the technical field of textile fabrics, the preparation method comprises the following steps: step (1) spinning: uniformly mixing cotton fibers, modal fibers and modified silk fibers, and processing by adopting a ring spinning process to obtain blended yarns; (2) weaving: weaving the blended yarns by adopting a circular knitting machine in a double-rib warp knitting structure to obtain gray fabric; (3) finishing: adding the gray fabric into the fabric finishing liquid for dipping, pre-drying, baking, washing and drying to obtain a finished fabric; and embroidering the finished fabric by adopting an embroidery machine to obtain the finished fabric. Wherein the modified silk fiber is prepared from a silk protein solution, modified graphene and a chitosan composition through wet spinning. The prepared embroidery textile is soft, skin-friendly and good in air permeability, and has good antibacterial performance and washing resistance.

Description

Technical Field

[0001] The present invention belongs to the technical field of textile fabrics, and particularly relates to a preparation method of a soft and skin-friendly embroidered textile. Background Art

[0002] With the continuous improvement of people's pursuit of quality of life, traditional textiles are increasingly unable to meet the market demand. Especially for textiles that directly contact the skin, such as underwear, baby clothes, and bedding, textile fabrics that are soft, skin-friendly, and have good air permeability are becoming more and more popular among people. Traditional skin-friendly textile fabrics mainly use natural fibers such as cotton, silk, and wool, as well as regenerated cellulose fibers such as lyocell, modal, and bamboo fiber as raw materials. These materials are widely used because of their good softness, air permeability, and hygroscopicity, and can provide an excellent tactile experience for the wearer. Among them, cotton fiber is famous for its soft touch, hygroscopicity, and warmth retention, and is an ideal choice for making underwear, T-shirts and other skin-contact clothes. Silk fiber is highly favored in high-end clothing and bedding because of its smooth feel and bright luster. Modal fiber has good drapability, softness, and hygroscopicity, and can be used as a substitute for natural fibers. Bamboo fiber is suitable for making summer clothes, underwear, and home textiles, with good moisture absorption and air permeability, and can provide people with a cool and comfortable wearing experience.

[0003] In the prior art, there are many different methods to improve the softness and skin-friendliness of textile fabrics. One is in the selection of raw materials. By using cotton fiber, silk fiber, wool fiber, modal fiber, lyocell fiber, bamboo fiber, etc., the natural softness and comfort of these raw materials are used to achieve the purpose. The second is in the spinning technology. Processes such as ring spinning can be used to produce finer and more uniform yarns, thereby increasing the softness of the fabric. The third is in the post-treatment technology. By using enzyme washing to decompose the fluff on the fiber surface, the fabric becomes smoother. It can also be treated with a softener to form a protective film on the fiber surface, reducing friction and enhancing softness. In addition, physical treatment methods such as sanding and raising can also change the surface characteristics of the fabric, making it softer and more skin-friendly.

[0004] However, these above methods also have certain limitations and disadvantages that need to be improved. For example, natural fibers are often relatively expensive, and the production process has a long cycle and a large impact on the environment. The effects achieved by existing spinning and post-treatment technologies are relatively limited, and the stability is also poor, which cannot meet the high requirements of people for textiles. Physical treatment methods such as sanding and raising will weaken the durability of the fabric, shorten the service life, and are not conducive to energy conservation and emission reduction. Therefore, there is an urgent need for a new preparation method of soft and skin-friendly textiles, which can improve the softness, skin-friendliness, air permeability and other properties of textiles, while making the textiles more durable and the performance more stable. Summary of the Invention

[0005] The object of the present invention is to provide a method for preparing a compliant and skin-friendly embroidered textile. By using self-made modified silk fibers in combination with cotton fibers and modal fibers to make a blended yarn, the embroidered textile can be made more compliant and skin-friendly, and has certain antibacterial properties.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a method for preparing a compliant and skin-friendly embroidered textile, comprising the following steps:

[0008] Step (1) Spinning: Mix 30 - 50 parts by weight of cotton fibers, 20 - 30 parts by weight of modal fibers, and 10 - 20 parts by weight of modified silk fibers evenly, and process them by the ring spinning process to obtain a blended yarn; the modified silk fibers are prepared by wet spinning using a silk fibroin solution, a modified graphene and chitosan composition.

[0009] Step (2) Weaving: Weave the blended yarn obtained in step (1) on a circular knitting machine with a double rib warp knitting structure to obtain a grey fabric.

[0010] Step (3) Finishing: Immerse the grey fabric obtained in step (2) in a fabric finishing solution for 30 - 40 min, dip and roll twice, then pre-dry for 130 - 170 s, then cure for 40 - 50 s, wash 2 - 4 times, and dry to obtain a finished fabric; embroider on the finished fabric using an embroidery machine to embroider a pattern at one time to obtain the compliant and skin-friendly embroidered textile.

[0011] Preferably, the preparation method of the modified silk fibers comprises the following steps:

[0012] Add 10 - 20 parts by weight of silkworm cocoons and 100 - 150 parts by weight of sodium carbonate aqueous solution to a closed reaction kettle, heat and stir, filter, wash with water, and dry to obtain degummed silk; add 5 - 15 parts by weight of degummed silk to 80 - 100 parts by weight of lithium bromide aqueous solution, heat and stir, centrifuge, take the supernatant for dialysis, and concentrate under reduced pressure to obtain a silk fibroin solution.

[0013] Add 2 - 5 parts by weight of aminopropyl double-capped polydimethylsiloxane and 10 - 15 parts by weight of graphene oxide to 150 - 250 parts by weight of ethanol aqueous solution, heat and stir, filter, and dry to obtain modified graphene.

[0014] 1-2 parts by weight of modified graphene and 1-3 parts by weight of chitosan composition are added to 40-60 parts by weight of silk fibroin solution, ultrasonicated, concentrated under reduced pressure, and then an aqueous calcium chloride solution is added, followed by heating and stirring to obtain a raw spinning solution; the chitosan composition is composed of a chitosan quaternary ammonium salt and carboxymethyl chitosan in a weight ratio of 1:1-2; the raw spinning solution is wet-spun to obtain modified silk fibers.

[0015] The modified silk fibers prepared by the above method are used in combination with cotton fibers and modal fibers to make blended yarns, which not only make the embroidered textiles softer and more skin-friendly, but also endow the embroidered textiles with good antibacterial properties, wrinkle resistance and washability.

[0016] In the preparation process of the modified silk fibers, the present invention first degums the silkworm cocoons in a sodium carbonate solution, and then dissolves the degummed silk with a lithium bromide solution to form a silk fibroin solution, which provides a basis for subsequent functional modification and spinning. Next, the present invention modifies graphene oxide with aminopropyl-terminated polydimethylsiloxane. The amino group in aminopropyl-terminated polydimethylsiloxane can react with the carboxyl group on the surface of graphene oxide to undergo an amidation reaction, thereby introducing siloxane groups and enhancing its dispersibility and compatibility. The modified graphene can not only improve the mechanical strength of the fiber, but also enhance the antibacterial properties and stability of the fiber. At the same time, the present invention also enhances the antibacterial ability and compatibility of chitosan by using a specific chitosan composition.

[0017] Finally, the present invention adds the modified graphene and chitosan composition to the silk fibroin solution and converts it into fibers by wet spinning technology. Calcium chloride is used as a coagulant in the coagulation bath to promote the recrystallization of protein molecules to form a fiber structure. The drawing process makes the molecular chains inside the fiber more orderly arranged, improving the mechanical strength and wrinkle resistance of the fiber; the modified silk fibers not only maintain the softness and luster of natural silk, but also possess excellent antibacterial, wrinkle resistance and washability. After blending with cotton fibers and modal fibers, the overall comfort and functionality of the textiles are further improved, meeting the requirements of high-end embroidered textiles.

[0018] Furthermore, the preparation method of the modified silk fibers includes the following steps:

[0019] Add 10 - 20 parts by weight of silk cocoons and 100 - 150 parts by weight of 0.02 - 0.04 mol / L sodium carbonate aqueous solution into a closed reaction kettle, stir at 95 - 100 °C and 100 - 200 rpm for 30 - 50 min, filter, wash with water 2 - 4 times, and dry to obtain degummed silk; add 5 - 15 parts by weight of degummed silk into 80 - 100 parts by weight of 9 - 9.5 mol / L lithium bromide aqueous solution, stir at 55 - 65 °C and 100 - 200 rpm for 1 - 3 h, centrifuge, take the supernatant and place it in a dialysis bag with a molecular weight cut-off of 4000 - 5000 Da and dialyze with water for 70 - 80 h, change water once every 20 - 25 h, and concentrate under reduced pressure to 12 - 16 wt% of the mass before concentration under reduced pressure to obtain silk protein solution;

[0020] Add 2 - 5 parts by weight of ammonia - propyl - terminated polydimethylsiloxane and 10 - 15 parts by weight of graphene oxide into 150 - 250 parts by weight of 60 - 70 wt% ethanol aqueous solution, stir at 80 - 90 °C and 150 - 300 rpm for 1 - 5 h, filter, and dry to obtain modified graphene;

[0021] Add 1 - 2 parts by weight of modified graphene and 1 - 3 parts by weight of chitosan composition into 40 - 60 parts by weight of silk protein solution, ultrasonicate at an ultrasonic power of 100 - 200 W and an ultrasonic frequency of 25 - 40 kHz for 30 - 40 min, concentrate under reduced pressure to 40 - 50 wt% of the mass before concentration under reduced pressure, then add 2 - 3 mol / L calcium chloride aqueous solution, stir at 80 - 90 °C and 150 - 300 rpm for 2 - 4 h to obtain the raw spinning solution; the chitosan composition is composed of chitosan quaternary ammonium salt and carboxymethyl chitosan in a weight ratio of 1:1 - 2; the concentration of calcium ions in the raw spinning solution is 0.2 - 0.4 mol / L; perform wet spinning on the raw spinning solution, with an extrusion speed of 10 - 15 mL / h, soak in water for 2 - 4 min after extrusion, then draw at 1.1 - 1.6 times, and dry to obtain modified silk fibers.

[0022] Preferably, the fabric finishing solution comprises the following raw materials: polyethylene glycol 400, tris(hydroxymethyl)aminomethane, Tween 60, sodium gluconate, 3 - (2,3 - epoxypropoxy)propyltrimethoxysilane, dodecyl bis(hydroxyethyl)methylammonium chloride, sodium dodecyl sulfate, disodium lauryl polyoxyethylene ether sulfosuccinate, and water.

[0023] The present invention also uses the above fabric finishing liquid to finish and process greige cloth. The synergistic effect of various components can further improve the softness, wrinkle resistance and washability of embroidered textiles. Among them, the epoxy group in 3-(2,3-epoxypropoxy)propyltrimethoxysilane can react with the hydroxyl group or other active groups on the fiber to form covalent bonds, thereby enhancing the crosslinking density between fibers. This crosslinking not only improves the wrinkle resistance of the fabric, but also enhances its washability, because the crosslinking points reduce the relative movement of fibers during washing; dodecyldihydroxyethylmethylammonium chloride can adsorb on the fiber surface to form a lubricating film, reduce the friction between fibers, significantly improve the softness of the fabric, and also help to limit the relative movement of fiber molecular chains, improving the wrinkle resistance of the fabric. In addition, the formed protective layer is also beneficial to improving the stability and washability of the fabric; disodium laureth sulfosuccinate can cooperate with sodium dodecyl sulfate to better exert emulsifying, dispersing and penetrating abilities. The two can reduce the surface tension of the liquid, help the finishing liquid better penetrate into the fiber interior, ensure that each component is evenly distributed on the entire fabric, thereby enhancing the finishing effect, and can also assist other components to form a stable dispersion system to ensure the quality of the finishing liquid.

[0024] In addition, polyethylene glycol 400, as a non-ionic surfactant, has good water solubility and lubricity, can form a protective film on the fiber surface, reduce the friction between fibers, thereby improving the softness of the fabric, and polyethylene glycol 400 can also help other components better disperse and penetrate into the fiber interior, enhancing the overall treatment effect; tris(hydroxymethyl)aminomethane, as a buffer, maintains the pH value of the finishing liquid stable. This stable pH environment helps to improve the stability and uniformity of the finishing liquid, thereby better exerting the role of improving the fabric properties; Tween 60 can help other components in the finishing liquid better disperse and penetrate into the fiber structure, promote the interaction between each component and the fiber, enhance the finishing effect, and at the same time Tween 60 can also increase the softness and hydrophilicity of the fabric, further improving the wearing comfort; sodium gluconate, as a chelating agent, can prevent ions in water from interfering with the finishing process, ensure the stability and effectiveness of the finishing liquid, and can also assist other components to better play their roles, further enhancing the softness and washability of the fabric.

[0025] Furthermore, the fabric finishing liquid is composed of the following raw materials in parts by weight:

[0026] 2-4 parts by weight of polyethylene glycol 400, 0.8-1.2 parts by weight of tris(hydroxymethyl)aminomethane, 1-1.5 parts by weight of Tween 60, 1-1.5 parts by weight of sodium gluconate, 1-2 parts by weight of 3-(2,3-epoxypropoxy)propyltrimethoxysilane, 0.5-1 part by weight of dodecyldihydroxyethylmethylammonium chloride, 1-3 parts by weight of sodium dodecyl sulfate, 1-3 parts by weight of disodium laureth sulfosuccinate, 200-300 parts by weight of water.

[0027] Preferably, in step (1), the ring spinning process includes bale opening, carding, drawing, drawing and roving, combing, slubbing, spinning and winding.

[0028] Preferably, in step (1), the linear density of the blended yarn is 50-60S, and the twist factor of the blended yarn is 250-350.

[0029] Preferably, in step (2), the coil length of the blended yarn is 23-28 cm / 100G.

[0030] Preferably, in step (2), the gram weight of the grey cloth is 150-180 g / m 2 .

[0031] Preferably, in step (3), the solid-liquid ratio of the grey cloth to the fabric finishing liquid is 1 kg:12-15 L.

[0032] Preferably, in step (3), the squeeze ratio of the two-bath two-roll process is 85-95%.

[0033] Preferably, in step (3), the temperature of the impregnation is 55-60 °C; the temperature of the pre-drying is 95-105 °C; the temperature of the curing is 145-155 °C.

[0034] Compared with the prior art, the advantages and beneficial effects of the present invention are:

[0035] 1. The present invention provides a method for preparing a soft and skin-friendly embroidered textile. By using a self-made modified silk fiber combined with cotton fiber and modal fiber to make a blended yarn, the modified silk fiber is prepared by wet spinning with a silk protein solution, a modified graphene and a chitosan composition, so that the embroidered textile is more soft and skin-friendly and has certain antibacterial properties; the present invention also uses a specific fabric finishing liquid to finish the grey cloth, further improving the softness and washability of the embroidered textile.

[0036] 2. The present invention adds a modified graphene and chitosan composition to silk fibroin solution and obtains modified silk fibers by wet spinning technology. Among them, the modified graphene can improve the mechanical strength of the fibers, and enhance the antibacterial property and stability of the fibers. By using a specific chitosan composition, the antibacterial ability and compatibility of chitosan are enhanced. The modified silk fibers not only maintain the softness and luster of natural silk, but also possess excellent antibacterial, wrinkle-resistant and wash-resistant properties. When blended with cotton fibers and modal fibers, the overall comfort and functionality of the textiles are further improved.

[0037] 3. The fabric finishing solution adopted by the present invention further improves the softness, wrinkle resistance and wash resistance of embroidered textiles through the synergistic effect of various components. Among them, 3-(2,3-epoxypropoxy)propyltrimethoxysilane enhances the crosslinking density between fibers, improving the wrinkle resistance and wash resistance. Dodecyldihydroxyethylmethylammonium chloride can adsorb on the fiber surface to form a lubricating film, reducing the friction between fibers, significantly improving the softness of the fabric, and also helping to limit the relative movement of fiber molecular chains, improving the wrinkle resistance of the fabric. Disodium laureth sulfosuccinate can cooperate with sodium dodecyl sulfate to better exert emulsifying, dispersing and penetrating abilities, ensuring that each component is evenly distributed throughout the fabric, thereby enhancing the finishing effect. Detailed implementation manners

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0039] Cotton fiber, fiber length: 28 mm, fineness: 1.80 dtex.

[0040] Modal fiber, fiber length: 40 mm, fineness: 1.60 dtex.

[0041] Aminopropyl-terminated polydimethylsiloxane, average molecular weight: 2500.

[0042] Graphene oxide, monolayer, average sheet diameter: 0.5 - 5 μm, average thickness: 0.8 - 1.2 nm.

[0043] Chitosan quaternary ammonium salt, degree of substitution: ≥90%, degree of deacetylation: ≥85%, viscosity (1% aqueous solution, 25°C): 50 - 150 mPa·s.

[0044] Carboxymethyl chitosan, degree of substitution: ≥75%, degree of deacetylation: ≥80%, viscosity (1% aqueous solution, 25°C): 100 - 200 mPa·s.

[0045] Example 1

[0046] This example provides a method for preparing a compliant and skin-friendly embroidered textile, which includes the following steps:

[0047] Step (1) Spinning: Mix 40 parts by weight of cotton fibers, 25 parts by weight of modal fibers, and 15 parts by weight of modified silk fibers evenly, and process them through the ring spinning process to obtain a blended yarn. The ring spinning process includes blowing, carding, drawing, drawing and roving, combing, slubbing, spinning, and winding; among them, the linear density of the blended yarn is 55S, and the twist factor of the blended yarn is 300;

[0048] Step (2) Weaving: Weave the blended yarn obtained in step (1) on a circular knitting machine with a double rib warp knitting structure to obtain a grey fabric; among them, the coil length of the blended yarn is 25 cm / 100G, and the gram weight of the grey fabric is 160 g / m 2 ;

[0049] Step (3) Finishing: Add the grey fabric obtained in step (2) to the fabric finishing solution, impregnate it at 56 °C for 35 min, the solid-liquid ratio of the grey fabric to the fabric finishing solution is 1 kg:14 L, dip and roll twice, the squeezing rate is 90%, then pre-dry it at 100 °C for 150 s, and then cure it at 150 °C for 45 s, wash it 3 times, and dry it to obtain the finished fabric; Use an embroidery machine to embroider on the finished fabric to embroider the pattern at one time to obtain the compliant and skin-friendly embroidered textile.

[0050] The fabric finishing solution is composed of the following raw materials in parts by weight:

[0051] 2.5 parts by weight of polyethylene glycol 400, 1 part by weight of tris(hydroxymethyl)aminomethane, 1.2 parts by weight of Tween 60, 1.3 parts by weight of sodium gluconate, 1.5 parts by weight of 3-(2,3-epoxypropoxy)propyltrimethoxysilane, 0.8 part by weight of dodecyldihydroxyethylmethylammonium chloride, 2 parts by weight of sodium dodecyl sulfate, 2 parts by weight of sodium lauryl polyoxyethylene ether sulfosuccinate, 250 parts by weight of water.

[0052] The preparation method of the modified silk fiber includes the following steps:

[0053] Add 15 parts by weight of silkworm cocoons and 135 parts by weight of 0.03 mol / L sodium carbonate aqueous solution to a closed reaction kettle, stir at 100 °C and 150 rpm for 40 min, filter, wash with water 3 times, and dry to obtain degummed silk; add 10 parts by weight of degummed silk to 90 parts by weight of 9.3 mol / L lithium bromide aqueous solution, stir at 60 °C and 150 rpm for 2 h, centrifuge, take the supernatant and place it in a dialysis bag with a molecular weight cut-off of 4500 Da and dialyze with water for 72 h, changing the water once every 24 h, and concentrate under reduced pressure to 15 wt% of the mass before concentration under reduced pressure to obtain a silk protein solution;

[0054] Add 3.5 parts by weight of ammonia-propyl terminated polydimethylsiloxane and 12.5 parts by weight of graphene oxide to 200 parts by weight of 65 wt% ethanol aqueous solution, stir at 85 °C and 200 rpm for 2.5 h, filter, and dry to obtain modified graphene;

[0055] Add 1.5 parts by weight of modified graphene and 2 parts by weight of chitosan composition to 50 parts by weight of silk protein solution, sonicate at an ultrasonic power of 150 W and an ultrasonic frequency of 30 kHz for 35 min, concentrate under reduced pressure to 45 wt% of the mass before concentration under reduced pressure, then add 2.5 mol / L calcium chloride aqueous solution, and stir at 85 °C and 200 rpm for 2.5 h to obtain a raw spinning solution; the chitosan composition is composed of chitosan quaternary ammonium salt and carboxymethyl chitosan in a weight ratio of 1:1.5; the concentration of calcium ions in the raw spinning solution is 0.3 mol / L; perform wet spinning on the raw spinning solution, with an extrusion speed of 12 mL / h, soak in water for 3 min after extrusion, then draw by 1.3 times, and dry to obtain modified silk fibers.

[0056] Example 2

[0057] This example provides a method for preparing a soft and skin-friendly embroidered textile, which includes the following steps:

[0058] Step (1) Spinning: Mix 30 parts by weight of cotton fibers, 20 parts by weight of modal fibers, and 10 parts by weight of modified silk fibers evenly, and process them by ring spinning process to obtain a blended yarn. The ring spinning process includes opening, carding, drawing, drawing-in, combing, roving, spinning, and winding; among them, the linear density of the blended yarn is 50S, and the twist factor of the blended yarn is 250;

[0059] Step (2) Weaving: Weave the blended yarn obtained in step (1) on a circular knitting machine with a double rib warp knitting structure to obtain a grey cloth; among them, the coil length of the blended yarn is 23 cm / 100G, and the gram weight of the grey cloth is 150 g / m 2 ;

[0060] Step (3) Finishing: Add the greige fabric obtained in step (2) into the fabric finishing solution, impregnate it at 55°C for 30 min, the solid-liquid ratio of the greige fabric to the fabric finishing solution is 1 kg: 12 L, dip and roll twice, the liquor pick-up rate is 85%, then place it in a pre-drying at 95°C for 130 s, and then place it in a curing at 145°C for 40 s, wash it twice with water, and dry it to obtain the finished fabric; Use an embroidery machine to embroider on the finished fabric, and embroider the pattern at one time to obtain the compliant and skin-friendly embroidered textile.

[0061] The fabric finishing solution is composed of the following raw materials in parts by weight:

[0062] 2 parts by weight of polyethylene glycol 400, 0.8 parts by weight of tris (hydroxymethyl) aminomethane, 1 part by weight of Tween 60, 1 part by weight of sodium gluconate, 1 part by weight of 3-(2,3-epoxypropoxy) propyltrimethoxysilane, 0.3 parts by weight of dodecyl bis (2-hydroxyethyl) methyl ammonium chloride, 1 part by weight of sodium dodecyl sulfate, 1 part by weight of sodium lauryl polyoxyethylene ether sulfosuccinate, 200 parts by weight of water.

[0063] The preparation method of the modified silk fiber is the same as that in Example 1.

[0064] Example 3

[0065] This example provides a method for preparing a compliant and skin-friendly embroidered textile, which includes the following steps:

[0066] Step (1) Spinning: Mix 50 parts by weight of cotton fiber, 30 parts by weight of modal fiber, and 20 parts by weight of modified silk fiber evenly, and process them by ring spinning process to obtain blended yarn. The ring spinning process includes blowing-carding, carding, drawing, drawing and roving, combing, slubbing, spinning, and winding; Among them, the linear density of the blended yarn is 60S, and the twist factor of the blended yarn is 350;

[0067] Step (2) Weaving: Weave the blended yarn obtained in step (1) on a circular knitting machine with a double rib warp knitting structure to obtain a greige fabric; Among them, the coil length of the blended yarn is 28 cm / 100G, and the gram weight of the greige fabric is 180 g / m 2 ;

[0068] Step (3) Finishing: Add the greige fabric obtained in step (2) into the fabric finishing solution, impregnate it at 60°C for 40 min, the solid-liquid ratio of the greige fabric to the fabric finishing solution is 1 kg: 15 L, dip and roll twice, the liquor pick-up rate is 95%, then place it in a pre-drying at 105°C for 170 s, and then place it in a curing at 155°C for 50 s, wash it 4 times with water, and dry it to obtain the finished fabric; Use an embroidery machine to embroider on the finished fabric, and embroider the pattern at one time to obtain the compliant and skin-friendly embroidered textile.

[0069] The fabric finishing liquid is composed of the following raw materials in parts by weight:

[0070] 4 parts by weight of polyethylene glycol 400, 1.2 parts by weight of tris(hydroxymethyl)aminomethane, 1.5 parts by weight of Tween 60, 1.5 parts by weight of sodium gluconate, 2 parts by weight of 3-(2,3-epoxypropoxy)propyltrimethoxysilane, 0.7 parts by weight of dodecyldihydroxyethylmethylammonium chloride, 3 parts by weight of sodium dodecyl sulfate, 3 parts by weight of disodium laureth sulfosuccinate, 300 parts by weight of water.

[0071] The preparation method of the modified silk fiber is the same as that in Example 1.

[0072] Comparative Example 1

[0073] The difference between this comparative example and Example 1 is that the preparation method of the modified silk fiber is different, specifically as follows: The preparation method of the modified silk fiber includes the following steps:

[0074] Add 15 parts by weight of silkworm cocoons and 135 parts by weight of 0.03 mol / L sodium carbonate aqueous solution into a closed reaction kettle, stir at 100 °C and 150 rpm for 40 min, filter, wash with water 3 times, and dry to obtain degummed silk; add 10 parts by weight of degummed silk into 90 parts by weight of 9.3 mol / L lithium bromide aqueous solution, stir at 60 °C and 150 rpm for 2 h, centrifuge, take the supernatant and place it in a dialysis bag with a molecular weight cut-off of 4500 Da and dialyze with water for 72 h, change water once every 24 h, and concentrate under reduced pressure to 15 wt% of the mass before concentration under reduced pressure to obtain silk protein solution;

[0075] Add 2 parts by weight of chitosan composition into 50 parts by weight of silk protein solution, sonicate at an ultrasonic power of 150 W and an ultrasonic frequency of 30 kHz for 35 min, concentrate under reduced pressure to 45 wt% of the mass before concentration under reduced pressure, then add 2.5 mol / L calcium chloride aqueous solution, stir at 85 °C and 200 rpm for 2.5 h to obtain the raw spinning solution; the chitosan composition is composed of chitosan quaternary ammonium salt and carboxymethyl chitosan in a weight ratio of 1:1.5; the concentration of calcium ions in the raw spinning solution is 0.3 mol / L; carry out wet spinning on the raw spinning solution, the extrusion speed is 12 mL / h, soak in water for 3 min after extrusion, then draw at 1.3 times, and dry to obtain the modified silk fiber.

[0076] Comparative Example 2

[0077] The difference between this comparative example and Example 1 is that the preparation method of the modified silk fiber is different, specifically as follows: The preparation method of the modified silk fiber includes the following steps:

[0078] Add 15 parts by weight of silkworm cocoons and 135 parts by weight of 0.03 mol / L sodium carbonate aqueous solution into a closed reaction kettle, stir at 100 °C and 150 rpm for 40 min, filter, wash with water 3 times, and dry to obtain degummed silk; add 10 parts by weight of degummed silk into 90 parts by weight of 9.3 mol / L lithium bromide aqueous solution, stir at 60 °C and 150 rpm for 2 h, centrifuge, take the supernatant and place it in a dialysis bag with a molecular weight cut-off of 4500 Da, dialyze with water for 72 h, change water once every 24 h, and concentrate under reduced pressure to 15 wt% of the mass before concentration under reduced pressure to obtain silk protein solution;

[0079] Add 3.5 parts by weight of ammonia propyl double-capped polydimethylsiloxane and 12.5 parts by weight of graphene oxide into 200 parts by weight of 65 wt% ethanol aqueous solution, stir at 85 °C and 200 rpm for 2.5 h, filter, and dry to obtain modified graphene;

[0080] Add 1.5 parts by weight of modified graphene into 50 parts by weight of silk protein solution, ultrasonicate at an ultrasonic power of 150 W and an ultrasonic frequency of 30 kHz for 35 min, concentrate under reduced pressure to 45 wt% of the mass before concentration under reduced pressure, then add 2.5 mol / L calcium chloride aqueous solution, stir at 85 °C and 200 rpm for 2.5 h to obtain the raw spinning solution; the concentration of calcium ions in the raw spinning solution is 0.3 mol / L; carry out wet spinning on the raw spinning solution, the extrusion speed is 12 mL / h, soak in water for 3 min after extrusion, then draw by 1.3 times, and dry to obtain modified silk fiber.

[0081] Comparative Example 3

[0082] The difference between this comparative example and Example 1 is that the preparation method of the modified silk fiber is different, specifically as follows: the preparation method of the modified silk fiber includes the following steps:

[0083] Add 15 parts by weight of silkworm cocoons and 135 parts by weight of 0.03 mol / L sodium carbonate aqueous solution into a closed reaction kettle, stir at 100 °C and 150 rpm for 40 min, filter, wash with water 3 times, and dry to obtain degummed silk; add 10 parts by weight of degummed silk into 90 parts by weight of 9.3 mol / L lithium bromide aqueous solution, stir at 60 °C and 150 rpm for 2 h, centrifuge, take the supernatant and place it in a dialysis bag with a molecular weight cut-off of 4500 Da, dialyze with water for 72 h, change water once every 24 h, and concentrate under reduced pressure to 15 wt% of the mass before concentration under reduced pressure to obtain silk protein solution;

[0084] 1.5 parts by weight of graphene oxide and 2 parts by weight of carboxymethyl chitosan were added to 50 parts by weight of silk fibroin solution, and ultrasonicated for 35 min under the conditions of ultrasonic power of 150 W and ultrasonic frequency of 30 kHz, and then concentrated under reduced pressure to 45 wt% of the mass before concentration under reduced pressure. Then, 2.5 mol / L calcium chloride aqueous solution was added, and stirred at 85 °C and 200 rpm for 2.5 h to obtain a raw material spinning solution; the concentration of calcium ions in the raw material spinning solution was 0.3 mol / L; the raw material spinning solution was wet-spun, the extrusion speed was 12 mL / h, soaked in water for 3 min after extrusion, and then drawn 1.3 times and dried to obtain modified silk fibers.

[0085] Comparative Example 4

[0086] The difference between this comparative example and Example 1 is that the modified silk fibers were replaced with silk fibers, specifically as follows: The preparation method of the silk fibers includes the following steps:

[0087] 15 parts by weight of silkworm cocoons and 135 parts by weight of 0.03 mol / L sodium carbonate aqueous solution were added to a closed reaction kettle, stirred at 100 °C and 150 rpm for 40 min, filtered, washed with water 3 times, and dried to obtain degummed silk; 10 parts by weight of degummed silk were added to 90 parts by weight of 9.3 mol / L lithium bromide aqueous solution, stirred at 60 °C and 150 rpm for 2 h, centrifuged, and the supernatant was placed in a dialysis bag with a molecular weight cut-off of 4500 Da and dialyzed with water for 72 h, changing the water once every 24 h, and concentrated under reduced pressure to 15 wt% of the mass before concentration under reduced pressure to obtain silk fibroin solution;

[0088] 50 parts by weight of silk fibroin solution was ultrasonicated for 35 min under the conditions of ultrasonic power of 150 W and ultrasonic frequency of 30 kHz, concentrated under reduced pressure to 45 wt% of the mass before concentration under reduced pressure, then 2.5 mol / L calcium chloride aqueous solution was added, and stirred at 85 °C and 200 rpm for 2.5 h to obtain a raw material spinning solution; the concentration of calcium ions in the raw material spinning solution was 0.3 mol / L; the raw material spinning solution was wet-spun, the extrusion speed was 12 mL / h, soaked in water for 3 min after extrusion, and then drawn 1.3 times and dried to obtain silk fibers.

[0089] Comparative Example 5

[0090] The difference between this comparative example and Example 1 is that the formulation of the fabric finishing solution is different, specifically as follows: The fabric finishing solution is composed of the following raw materials in parts by weight:

[0091] 2.5 parts by weight of polyethylene glycol 400, 1 part by weight of tris(hydroxymethyl)aminomethane, 1.2 parts by weight of Tween 60, 1.3 parts by weight of sodium gluconate, 0.8 part by weight of dodecyldihydroxyethylmethylammonium chloride, 2 parts by weight of sodium dodecyl sulfate, 2 parts by weight of disodium laureth sulfosuccinate, 250 parts by weight of water.

[0092] Comparative Example 6

[0093] The difference between this comparative example and Example 1 is that the formulation of the fabric finishing liquid is different, specifically as follows: The fabric finishing liquid is composed of the following raw materials in parts by weight:

[0094] 2.5 parts by weight of polyethylene glycol 400, 1 part by weight of tris(hydroxymethyl)aminomethane, 1.2 parts by weight of Tween 60, 1.3 parts by weight of sodium gluconate, 1.5 parts by weight of 3-(2,3-epoxypropoxy)propyltrimethoxysilane, 2 parts by weight of sodium dodecyl sulfate, 2 parts by weight of disodium laureth sulfosuccinate, 250 parts by weight of water.

[0095] Comparative Example 7

[0096] The difference between this comparative example and Example 1 is that the formulation of the fabric finishing liquid is different, specifically as follows: The fabric finishing liquid is composed of the following raw materials in parts by weight:

[0097] 2.5 parts by weight of polyethylene glycol 400, 1 part by weight of tris(hydroxymethyl)aminomethane, 1.2 parts by weight of Tween 60, 1.3 parts by weight of sodium gluconate, 1.5 parts by weight of 3-(2,3-epoxypropoxy)propyltrimethoxysilane, 0.8 part by weight of dodecyldihydroxyethylmethylammonium chloride, 2 parts by weight of sodium dodecyl sulfate, 250 parts by weight of water.

[0098] Comparative Example 8

[0099] The difference between this comparative example and Example 1 is that the formulation of the fabric finishing liquid is different, specifically as follows: The fabric finishing liquid is composed of the following raw materials in parts by weight:

[0100] 2.5 parts by weight of polyethylene glycol 400, 1 part by weight of tris(hydroxymethyl)aminomethane, 1.2 parts by weight of Tween 60, 1.5 parts by weight of 3-(2,3-epoxypropoxy)propyltrimethoxysilane, 0.8 part by weight of dodecyldihydroxyethylmethylammonium chloride, 2 parts by weight of sodium dodecyl sulfate, 2 parts by weight of disodium laureth sulfosuccinate, 250 parts by weight of water.

[0101] Performance Test

[0102] Perform performance tests on the soft and skin-friendly embroidered textiles obtained in Examples 1-3 and Comparative Examples 1-8 of the present application, and the test results are shown in Table 1.

[0103] (1) The softness of the above-mentioned embroidered textiles was measured by the hand-touch method recognized in the textile field, and multiple people graded and scored, and the average value was taken; the higher the score, the better the softness. Among them, "++++" indicates the best, "+" indicates the worst, and the more '+' indicates the better the softness.

[0104] (3) Refer to the standard GB / T 3819-1997 "Textiles - Determination of fabric crease recovery - Recovery angle method" to measure the wrinkle resistance of the above-mentioned embroidered textiles; measure the wrinkle resistance of the above-mentioned embroidered textiles after repeated washing 20 times, and evaluate its washability.

[0105] (3) Refer to the standard GB / T 20944.3-2008 "Textiles - Evaluation of antibacterial properties - Part 3: Oscillation method" to measure the antibacterial properties of embroidered textiles. Among them, the test strains are: Staphylococcus aureus ATCC 6538 and Escherichia coli ATCC8739.

[0106] Table 1: Performance test results of embroidered textiles

[0107]

[0108] It can be seen from the above test results that the soft, skin-friendly embroidered textiles prepared in Examples 1-3 have good softness, wrinkle resistance, antibacterial properties and washability. In particular, the embroidered textiles corresponding to Example 3 have the most prominent comprehensive performance. This is because the present invention can effectively improve the softness, wrinkle resistance, antibacterial properties and washability of embroidered textiles by using self-made modified silk fibers and fabric finishing liquids.

[0109] In contrast, since Comparative Examples 1-8 did not adopt the necessary technical solutions, their corresponding performance tests were significantly worse than those of Examples 1-3. In Comparative Examples 1-4, modified silk fibers prepared by a specific method were not used, and in Comparative Examples 5-8, fabric finishing liquids with specific formulations were not used. It can be seen from the results that this led to a decline in the comprehensive performance of the embroidered textiles. The above experimental results further prove the importance of the technical solutions defined in the present invention for its technical effects.

[0110] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A method for preparing soft and skin-friendly embroidery textiles, characterized in that: The steps include: Step (1) Spinning: 30-50 parts by weight of cotton fiber, 20-30 parts by weight of modal fiber, and 10-20 parts by weight of modified silk fiber are uniformly mixed, and processed by a ring spinning process to obtain a blended yarn; the modified silk fiber is prepared by wet spinning a silk protein solution, a modified graphene and a chitosan composition; Step (2) weaving: the blended yarn obtained in step (1) is weaved using a circular knitting machine with an interlock warp knitting structure to obtain a grey cloth; Step (3) finishing: adding the grey cloth obtained in step (2) into the fabric finishing liquid and immersing it for 30-40 minutes, dipping and rolling it twice, then pre-baking it for 130-170 seconds, baking it for 40-50 seconds, washing it with water for 2-4 times, and drying it to obtain the finished fabric; using an embroidery machine to embroider on the finished fabric to obtain the soft and skin-friendly embroidered textile; The fabric finishing liquid comprises the following raw materials: Macrogol 400, tris(hydroxymethyl)aminomethane, Tween 60, sodium gluconate, 3-(2,3-epoxypropyloxy)propyltrimethoxysilane, dodecyl bis(hydroxyethyl)methylammonium chloride, sodium lauryl sulfate, disodium lauryl polyoxyethylene ether sulfosuccinate and water.

2. The method for preparing the soft and skin-friendly embroidered textile according to claim 1, characterized in that: The fabric finishing liquid is composed of the following raw materials in parts by weight: 2-4 parts by weight of polyethylene glycol 400, 0.8-1.2 parts by weight of tris(hydroxymethyl)aminomethane, 1-1.5 parts by weight of Tween 60, 1-1.5 parts by weight of sodium gluconate, 1-2 parts by weight of 3-(2,3-epoxypropoxy)propyltrimethoxysilane, 0.5-1 parts by weight of dodecylbishydroxyethylmethylammonium chloride, 1-3 parts by weight of sodium lauryl sulfate, 1-3 parts by weight of disodium lauryl polyoxyethylene ether sulfosuccinate, and 200-300 parts by weight of water.

3. The method for preparing the soft and skin-friendly embroidered textile according to claim 1, characterized in that: The method for preparing the modified silk fiber comprises the following steps: 10-20 parts by weight of silk cocoons and 100-150 parts by weight of sodium carbonate aqueous solution are added to a closed reaction kettle, heated and stirred, filtered, washed with water, and dried to obtain degummed silk; 5-15 parts by weight of degummed silk are added to 80-100 parts by weight of lithium bromide aqueous solution, heated and stirred, centrifuged, the supernatant is dialyzed, and concentrated under reduced pressure to obtain silk protein liquid; Add 2-5 parts by weight of aminopropyl dicapped polydimethylsiloxane and 10-15 parts by weight of graphene oxide to 150-250 parts by weight of ethanol aqueous solution, heat and stir, filter, and dry to obtain modified graphene; 1-2 parts by weight of modified graphene and 1-3 parts by weight of a chitosan composition are added to 40-60 parts by weight of a silk protein solution, ultrasonicated, concentrated under reduced pressure, and then a calcium chloride aqueous solution is added, heated and stirred to obtain a raw spinning solution; the chitosan composition is composed of chitosan quaternary ammonium salt and carboxymethyl chitosan in a weight ratio of 1:1-2; the raw spinning solution is wet-spun to obtain modified silk fibers.

4. The method for preparing the soft and skin-friendly embroidered textile according to claim 3, characterized in that: The method for preparing the modified silk fiber comprises the following steps: 10-20 parts by weight of silk cocoons and 100-150 parts by weight of 0.02-0.04 mol / L sodium carbonate aqueous solution are added to a closed reactor, stirred at 95-100° C. and 100-200 rpm for 30-50 min, filtered, washed with water 2-4 times, and dried to obtain degummed silk; 5-15 parts by weight of degummed silk are added to 80-100 parts by weight of 9-9.5 mol / L lithium bromide aqueous solution, stirred at 55-65° C. and 100-200 rpm for 1-3 h, centrifuged, and the supernatant is placed in a dialysis bag with a molecular weight cutoff of 4000-5000 Da and dialyzed with water for 70-80 h, the water is changed every 20-25 h, and the decompression concentration is carried out to 12-16 wt% of the mass before decompression concentration to obtain a silk protein solution; Add 2-5 parts by weight of aminopropyl dicapped polydimethylsiloxane and 10-15 parts by weight of graphene oxide to 150-250 parts by weight of 60-70 wt% ethanol aqueous solution, stir at 80-90° C. and 150-300 rpm for 1-5 hours, filter, and dry to obtain modified graphene; 1-2 parts by weight of modified graphene and 1-3 parts by weight of chitosan composition are added to 40-60 parts by weight of silk protein solution, ultrasonically treated for 30-40 minutes at an ultrasonic power of 100-200 W and an ultrasonic frequency of 25-40 kHz, concentrated under reduced pressure to 40-50 wt% of the mass before reduced pressure concentration, then added with 2-3 mol / L calcium chloride aqueous solution, stirred for 2-4 hours at 80-90° C. and 150-300 rpm to obtain a raw spinning solution; the chitosan composition is composed of chitosan quaternary ammonium salt and carboxymethyl chitosan in a weight ratio of 1:1-2; the concentration of calcium ions in the raw spinning solution is 0.2-0.4 mol / L; the raw spinning solution is wet-spun at an extrusion speed of 10-15 mL / h, soaked in water for 2-4 minutes after extrusion, then pulled 1.1-1.6 times, and dried to obtain modified silk fibers.

5. The method for preparing the soft and skin-friendly embroidered textile according to claim 1, characterized in that: In step (1), the ring spinning process includes cleaning, carding, drawing, slivering and winding, combing, roving, spun yarn and winding.

6. The method for preparing the soft and skin-friendly embroidered textile according to claim 1, characterized in that: In step (1), the linear density of the blended yarn is 50-60S, and the twist coefficient of the blended yarn is 250-350.

7. The method for preparing the soft and skin-friendly embroidered textile according to claim 1, characterized in that: In step (2), the weight of the grey cloth is 150-180 g / m 2 .

8. The method for preparing the soft and skin-friendly embroidered textile according to claim 1, characterized in that: In step (3), the solid-liquid ratio of the grey cloth to the fabric finishing liquid is 1kg:12-15L.

9. The method for preparing the soft and skin-friendly embroidered textile according to claim 1, characterized in that: In step (3), the impregnation temperature is 55-60°C; the pre-baking temperature is 95-105°C; and the baking temperature is 145-155°C.

10. A soft and skin-friendly embroidered textile, characterized in that: Prepared according to the method described in any one of claims 1 to 9.

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