A home wear fabric containing mulberry silk and a preparation method thereof

Abstract

The present application relates to the technical field of fabric, in particular to a home wear fabric containing mulberry silk and a preparation method thereof.The present application prepares a blended yarn by blending mulberry silk short fibers with carbon sphere modified polylactic acid short fibers, and prepares the fabric through weaving and finishing.The carbon sphere modified polylactic acid short fibers are prepared by introducing alkyl chains into solid nanometer carbon spheres to modify polylactic acid.The fabric prepared by the present application has both the softness and air permeability of mulberry silk and the mechanical properties and durability of polylactic acid, and has high air permeability, excellent anti-pilling property, good elasticity and wrinkle resistance, is comfortable to wear and durable, and meets the requirements of high-end home wear for comfort, functionality and environmental protection.

Description

Technical Field

[0001] This invention relates to the field of fabric technology, and in particular to a homewear fabric containing mulberry silk and its preparation method. Background Technology

[0002] As people's demands for comfort and functionality in loungewear continue to increase, the research and development of loungewear fabrics is gradually moving towards higher breathability, softness, durability, and environmental friendliness. Mulberry silk, as a natural fiber, has become the preferred material for high-end loungewear fabrics due to its unique luster, soft touch, and excellent breathability and moisture absorption. However, mulberry silk also has some drawbacks, such as poor pilling resistance, insufficient mechanical properties, easy wrinkling, and relatively low durability, which limits its widespread application in everyday loungewear. Furthermore, the high price of mulberry silk also increases the production cost of the fabric.

[0003] Polylactic acid (PLA) is a bio-based polymer material derived from renewable resources (such as corn starch). It possesses excellent mechanical properties, antibacterial properties, and biodegradability, aligning with current trends towards green and environmentally friendly practices. The application of PLA fibers in the textile industry is gradually increasing, offering advantages such as high strength, good durability, and some wrinkle resistance. However, PLA fibers themselves are relatively soft, have a stiff hand feel, and their breathability and moisture absorption are inferior to natural fibers, affecting their comfort performance in loungewear fabrics. Furthermore, PLA fibers are prone to brittleness during prolonged wear and washing, exhibiting limited elastic recovery.

[0004] Blending mulberry silk with polylactic acid (PLA) to create loungewear fabrics combines the advantages of both, such as the softness and breathability of mulberry silk and the mechanical properties and durability of PLA. However, this blend also has significant drawbacks. First, the substantial differences in the physical and chemical properties of mulberry silk and PLA result in poor compatibility, leading to issues like fiber separation or insufficient interfacial bonding after blending. Second, the stiffness of PLA may weaken the softness of mulberry silk, while the wrinkle-prone nature of mulberry silk may affect the wrinkle resistance of the blended fabric. Furthermore, the blended fabric still falls short in terms of pilling resistance and elastic recovery, making it difficult to meet the dual requirements of comfort and durability for high-end loungewear. Summary of the Invention

[0005] In view of this, the purpose of this invention is to propose a homewear fabric containing mulberry silk and its preparation method, which solves the problems of poor wrinkle resistance, insufficient pilling resistance and elastic recovery ability of mulberry silk and polylactic acid blended fabrics, while taking into account the high breathability, durability and environmental protection of the fabric, and meeting the needs of high-end homewear for comfort and functionality.

[0006] To achieve the above objectives, the present invention provides a homewear fabric containing mulberry silk, which is obtained by blending mulberry silk short fibers and carbon ball modified polylactic acid short fibers to obtain blended yarn, and then by weaving and finishing.

[0007] Furthermore, the blending ratio of the mulberry silk short fiber and carbon ball modified polylactic acid short fiber is any one of 60 / 40, 70 / 30 and 80 / 20.

[0008] Furthermore, the preparation method of the carbon sphere modified polylactic acid short fiber is as follows:

[0009] S1: Disperse amino-containing solid carbon nanospheres in N,N-dimethylformamide, sonicate for 20-40 min, add palmitic acid, heat to 110-130℃, stir for 4-6 h, centrifuge, wash, and vacuum dry to obtain alkyl chain modified solid carbon nanospheres.

[0010] S2: Add polylactic acid to N,N-dimethylformamide, heat to 110-130℃, stir for 20-40 min, then add alkyl chain modified solid carbon nanospheres, sonicate for 20-40 min, heat to 148-152℃, stir and reflux for 2.5-3.5 h, rotary evaporate, wash, and vacuum dry to obtain carbon sphere modified polylactic acid;

[0011] S3: Carbon ball modified polylactic acid is prepared into long filaments by melt spinning machine, and then cut into carbon ball modified polylactic acid short fibers.

[0012] Preferably, in step S1, the solid carbon nanospheres containing amino groups have an average particle size of 400-600 and an amino content of 4%-5%.

[0013] Preferably, in step S1, the weight ratio of the amino-containing solid carbon nanospheres, N,N-dimethylformamide, and palmitic acid is 1.5-2.5:15-25:0.1-0.3.

[0014] Preferably, in step S2, the weight ratio of polylactic acid, N,N-dimethylformamide and alkyl chain modified solid carbon nanospheres is 40-60:400-600:1.5-2.5.

[0015] Preferably, the intrinsic viscosity of polylactic acid in step S2 is 1.1-1.3 dL / g.

[0016] Preferably, the fineness of the mulberry silk short fibers is 1.2-1.6 dtex and the length is 35-40 mm.

[0017] Preferably, the carbon ball modified polylactic acid short fibers have a fineness of 1.6-2.0 dtex and a length of 35-40 mm.

[0018] Furthermore, the present invention also provides a method for preparing a loungewear fabric containing mulberry silk, comprising the following steps:

[0019] (1) Cut the silkworm silk fibers into short silkworm silk fibers;

[0020] (2) Mix mulberry silk short fibers and carbon ball modified polylactic acid short fibers, open, card, draw, roving, and spinning to obtain blended yarn;

[0021] (3) The blended yarn is woven on a high-needle, high-density circular knitting machine to obtain a coarse fabric.

[0022] (4) Add the coarse fabric to the finishing solution, treat it at 30-40℃ for 40-50 minutes, and then fix it at 140-150℃ for 3-8 minutes to obtain a homewear fabric containing mulberry silk.

[0023] Preferably, the twist coefficient of the blended yarn in step (2) is 300-340 and the fineness is 12.4-16.8 tex.

[0024] Preferably, in step (3), the warp density of the coarse fabric is 50-70 threads / cm, the weft density is 28-36 threads / cm, and the weight is 142-189 g / m². 2 .

[0025] Preferably, in step (4), the ratio of the coarse fabric to the finishing liquid is 1:15-25.

[0026] Preferably, the finishing solution in step (4) is an aqueous softener solution with a concentration of 1.5wt%-2.5wt%, and the softener is polydimethylsiloxane.

[0027] Preferably, the heat setting temperature in step (4) is 140-150℃ and the time is 3-8 min.

[0028] The beneficial effects of this invention are:

[0029] This invention provides a homewear fabric containing mulberry silk and its preparation method. The fabric has high breathability and excellent anti-pilling properties, is comfortable and durable to wear, and has good elasticity, which can quickly restore its shape after wearing, reducing the need for ironing. At the same time, it exhibits a good balance between flexibility and a certain degree of stiffness, which can maintain the shape of the fabric and provide a comfortable wearing experience.

[0030] This invention introduces modified solid carbon nanospheres into polylactic acid (PLA), then blends them with silk to form yarn. After weaving and finishing, a homewear fabric containing silk is obtained. The PLA with modified solid carbon nanospheres significantly improves the fabric's anti-pilling, wrinkle recovery, and mechanical properties. This invention utilizes the cross-linking effect between the amino groups on the surface of the solid carbon nanospheres and PLA to improve the fabric's elasticity and wrinkle resistance. Furthermore, the ball-bead effect of the carbon nanospheres enhances the fabric's anti-pilling properties. At the same time, the grafting of alkyl chains effectively regulates the balance between flexibility and stiffness, and improves breathability and structural stability. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0032] In the specific embodiments of this invention, the softener is polydimethylsiloxane, purchased from Shandong Luxin Chemical Co., Ltd., product number lx-201; the solid carbon nanospheres with amino groups on the surface are purchased from Shanghai Aladdin Biochemical Technology Co., Ltd., with an average particle size of 520 nm and an amino content of 4.87%; the solid carbon nanospheres with carboxyl groups on the surface are purchased from Shanghai Aladdin Biochemical Technology Co., Ltd., with an average particle size of 510 nm and a carboxyl content of 4.67%; and the polylactic acid is purchased from NatureWorks, with an intrinsic viscosity of 1.204 dL / g.

[0033] Example 1:

[0034] (1) Cut mulberry silk fibers with a fineness of 1.2 dtex into short mulberry silk fibers with a length of 35 mm;

[0035] (2) 1.5g of solid carbon nanospheres with amino groups on the surface were dispersed in 15g of N,N-dimethylformamide, sonicated for 20min, and then 0.1g of palmitic acid was added. The temperature was raised to 110℃, and the reaction was stirred for 4h. After centrifugation, washing, and vacuum drying, alkyl chain modified solid carbon nanospheres were obtained.

[0036] (3) Add 40g of polylactic acid to 400g of N,N-dimethylformamide, heat to 110℃, stir for 20min, then add 1.5g of alkyl chain modified solid carbon nanospheres, sonicate for 20min, heat to 148℃, stir and reflux for 2.5h, rotary evaporate, wash, and vacuum dry to obtain carbon sphere modified polylactic acid;

[0037] (4) Carbon ball modified polylactic acid is prepared into filaments with a fineness of 1.6 dtex by melt spinning machine, and then cut into carbon ball modified polylactic acid short fibers with a length of 35 mm.

[0038] (5) Mix mulberry silk short fibers and carbon ball modified polylactic acid short fibers at a blending ratio of 80 / 20, open, card, draw, roving, and spinning to obtain a blended yarn with a twist coefficient of 300 and a fineness of 12.4 tex.

[0039] (6) The blended yarn is woven on a high-needle, high-density circular knitting machine to obtain a warp density of 50 threads / cm, a weft density of 28 threads / cm, and a weight of 142g / m². 2 Coarse fabric;

[0040] (7) Add the coarse fabric to water at a bath ratio of 1:15 and add a softener at a concentration of 1.5wt%. Treat at 30℃ for 40 minutes and then set at 140℃ for 3 minutes to obtain a home wear fabric containing mulberry silk.

[0041] Example 2:

[0042] (1) Cut mulberry silk fibers with a fineness of 1.4 dtex into short mulberry silk fibers with a length of 38 mm;

[0043] (2) 2g of solid carbon nanospheres with amino groups on the surface were dispersed in 20g of N,N-dimethylformamide, sonicated for 30min, and then 0.2g of palmitic acid was added. The temperature was raised to 120℃, and the reaction was stirred for 5h. After centrifugation, washing, and vacuum drying, alkyl chain modified solid carbon nanospheres were obtained.

[0044] (3) Add 50g of polylactic acid to 500g of N,N-dimethylformamide, heat to 120℃, stir for 30min, then add 2g of alkyl chain modified solid carbon nanospheres, sonicate for 30min, heat to 150℃, stir and reflux for 3h, rotary evaporate, wash, and vacuum dry to obtain carbon sphere modified polylactic acid.

[0045] (4) Carbon ball modified polylactic acid is prepared into filaments with a fineness of 1.8 dtex by melt spinning machine, and then cut into carbon ball modified polylactic acid short fibers with a length of 38 mm.

[0046] (5) Mix mulberry silk short fibers and carbon ball modified polylactic acid short fibers at a blending ratio of 70 / 30, open, card, draw, roving, and spinning to obtain a blended yarn with a twist coefficient of 320 and a fineness of 14.5 tex;

[0047] (6) The blended yarn is woven on a high-needle, high-density circular knitting machine to obtain a warp density of 60 threads / cm, a weft density of 32 threads / cm, and a weight of 165g / m². 2 Coarse fabric;

[0048] (7) Add the coarse fabric to water at a bath ratio of 1:20 and add a softener at a concentration of 2wt%. Treat at 35℃ for 45 minutes and then set at 145℃ for 5 minutes to obtain a home wear fabric containing mulberry silk.

[0049] Example 3:

[0050] (1) Cut mulberry silk fibers with a fineness of 1.6 dtex into short mulberry silk fibers with a length of 40 mm;

[0051] (2) 2.5g of solid carbon nanospheres with amino groups on the surface were dispersed in 25g of N,N-dimethylformamide, sonicated for 40min, and then 0.3g of palmitic acid was added. The temperature was raised to 130℃, and the reaction was stirred for 6h. After centrifugation, washing, and vacuum drying, alkyl chain modified solid carbon nanospheres were obtained.

[0052] (3) Add 60g of polylactic acid to 600g of N,N-dimethylformamide, heat to 130℃, stir for 40min, then add 2.5g of alkyl chain modified solid carbon nanospheres, sonicate for 40min, heat to 152℃, stir and reflux for 3.5h, rotary evaporate, wash, and vacuum dry to obtain carbon sphere modified polylactic acid;

[0053] (4) Carbon ball modified polylactic acid is prepared into filaments with a fineness of 2.0 dtex by melt spinning machine, and then cut into carbon ball modified polylactic acid short fibers with a length of 40 mm.

[0054] (5) Mix mulberry silk short fibers and carbon ball modified polylactic acid short fibers at a blending ratio of 60 / 40, open, card, draw, roving, and spinning to obtain a blended yarn with a twist coefficient of 340 and a fineness of 16.8 tex.

[0055] (6) The blended yarn is woven on a high-needle, high-density circular knitting machine to obtain a warp density of 70 threads / cm, a weft density of 36 threads / cm, and a weight of 189 g / m². 2 Coarse fabric;

[0056] (7) Add the coarse fabric to water at a bath ratio of 1:25 and add a softener at a concentration of 2.5wt%. Treat at 40℃ for 50 minutes and then set at 150℃ for 8 minutes to obtain a homewear fabric containing mulberry silk.

[0057] Comparative Example 1:

[0058] The difference between Comparative Example 1 and Example 2 is that the solid carbon nanospheres with amino groups on the surface in step (2) are replaced with solid carbon nanospheres with carboxyl groups on the surface.

[0059] The specific steps are as follows:

[0060] (1) Cut mulberry silk fibers with a fineness of 1.4 dtex into short mulberry silk fibers with a length of 38 mm;

[0061] (2) Disperse 2g of solid carbon nanospheres with carboxyl groups on the surface in 20g of N,N-dimethylformamide, sonicate for 30min, add 0.2g of palmitic acid, heat to 120℃, stir for 5h, centrifuge, wash, and vacuum dry to obtain modified solid carbon nanospheres.

[0062] (3) Add 50g of polylactic acid to 500g of N,N-dimethylformamide, heat to 120℃, stir for 30min, then add 2g of modified solid carbon nanospheres, sonicate for 30min, heat to 150℃, stir and reflux for 3h, rotary evaporate, wash, and vacuum dry to obtain carbon sphere modified polylactic acid.

[0063] (4) Carbon ball modified polylactic acid is prepared into filaments with a fineness of 1.8 dtex by melt spinning machine, and then cut into carbon ball modified polylactic acid short fibers with a length of 38 mm.

[0064] (5) Mix mulberry silk short fibers and carbon ball modified polylactic acid short fibers at a blending ratio of 70 / 30, open, card, draw, roving, and spinning to obtain a blended yarn with a twist coefficient of 320 and a fineness of 14.4 tex;

[0065] (6) The blended yarn is woven on a high-needle, high-density circular knitting machine to obtain a warp density of 60 threads / cm, a weft density of 32 threads / cm, and a weight of 164 g / m². 2 Coarse fabric;

[0066] (7) Add the coarse fabric to water at a bath ratio of 1:20 and add a softener at a concentration of 2wt%. Treat at 35℃ for 45 minutes and then set at 145℃ for 5 minutes to obtain a home wear fabric containing mulberry silk.

[0067] Comparative Example 2:

[0068] The difference between Comparative Example 2 and Example 2 is that the alkyl chain modified solid carbon nanospheres in step (3) are replaced with solid carbon nanospheres with amino groups on the surface;

[0069] The specific steps are as follows:

[0070] (1) Cut mulberry silk fibers with a fineness of 1.4 dtex into short mulberry silk fibers with a length of 38 mm;

[0071] (2) Add 50g of polylactic acid to 500g of N,N-dimethylformamide, heat to 120℃, stir for 30min, then add 2g of solid carbon nanospheres with amino groups on the surface, sonicate for 30min, heat to 150℃, stir and reflux for 3h, rotary evaporate, wash, and vacuum dry to obtain carbon sphere modified polylactic acid.

[0072] (3) Carbon ball modified polylactic acid is prepared into filaments with a fineness of 1.8 dtex by melt spinning machine, and then cut into carbon ball modified polylactic acid short fibers with a length of 38 mm.

[0073] (4) Mix mulberry silk short fibers and carbon ball modified polylactic acid short fibers at a blending ratio of 70 / 30, open, card, draw, roving, and spinning to obtain a blended yarn with a twist coefficient of 320 and a fineness of 14.3 tex;

[0074] (5) The blended yarn is woven on a high-needle, high-density circular knitting machine to obtain a warp density of 60 threads / cm, a weft density of 32 threads / cm, and a weight of 164 g / m². 2 Coarse fabric;

[0075] (6) Add the coarse fabric to water at a ratio of 1:20 and add a softener at a concentration of 2wt%. Treat at 35℃ for 45 minutes and then set at 145℃ for 5 minutes to obtain a homewear fabric containing mulberry silk.

[0076] Comparative Example 3:

[0077] The difference between Comparative Example 3 and Example 2 is that the amount of palmitic acid used in step (2) is adjusted to 1g;

[0078] The specific steps are as follows:

[0079] (1) Cut mulberry silk fibers with a fineness of 1.4 dtex into short mulberry silk fibers with a length of 38 mm;

[0080] (2) 2g of solid carbon nanospheres with amino groups on the surface were dispersed in 20g of N,N-dimethylformamide, sonicated for 30min, and then 1g of palmitic acid was added. The temperature was raised to 120℃, and the reaction was stirred for 5h. After centrifugation, washing, and vacuum drying, alkyl chain modified solid carbon nanospheres were obtained.

[0081] (3) Add 50g of polylactic acid to 500g of N,N-dimethylformamide, heat to 120℃, stir for 30min, then add 2g of alkyl chain modified solid carbon nanospheres, sonicate for 30min, heat to 150℃, stir and reflux for 3h, rotary evaporate, wash, and vacuum dry to obtain carbon sphere modified polylactic acid.

[0082] (4) Carbon ball modified polylactic acid is prepared into filaments with a fineness of 1.8 dtex by melt spinning machine, and then cut into carbon ball modified polylactic acid short fibers with a length of 38 mm.

[0083] (5) Mix mulberry silk short fibers and carbon ball modified polylactic acid short fibers at a blending ratio of 70 / 30, open, card, draw, roving, and spinning to obtain a blended yarn with a twist coefficient of 320 and a fineness of 14.5 tex;

[0084] (6) The blended yarn is woven on a high-needle, high-density circular knitting machine to obtain a warp density of 60 threads / cm, a weft density of 32 threads / cm, and a weight of 165g / m². 2 Coarse fabric;

[0085] (7) Add the coarse fabric to water at a bath ratio of 1:20 and add a softener at a concentration of 2wt%. Treat at 35℃ for 45 minutes and then set at 145℃ for 5 minutes to obtain a home wear fabric containing mulberry silk.

[0086] Comparative Example 4:

[0087] The difference between Comparative Example 4 and Example 2 is that polylactic acid and alkyl chain modified solid carbon nanospheres were directly mixed and then melt-spun.

[0088] The specific steps are as follows:

[0089] (1) Cut mulberry silk fibers with a fineness of 1.4 dtex into short mulberry silk fibers with a length of 38 mm;

[0090] (2) Alkyl chain modified solid carbon nanospheres and carbon sphere modified polylactic acid are mixed at a weight ratio of 2:50, and then filaments with a fineness of 1.8 dtex are prepared by melt spinning machine, and then carbon sphere modified polylactic acid short fibers with a length of 38 mm are cut.

[0091] (3) Mix mulberry silk short fibers and carbon ball modified polylactic acid short fibers at a blending ratio of 70 / 30, open, card, draw, roving, and spinning to obtain a blended yarn with a twist coefficient of 320 and a fineness of 14.6 tex;

[0092] (4) The blended yarn is woven on a high-needle, high-density circular knitting machine to obtain a warp density of 60 threads / cm, a weft density of 32 threads / cm, and a weight of 167g / m². 2 Coarse fabric;

[0093] (5) Add the coarse fabric to water at a bath ratio of 1:20 and add a softener at a concentration of 2wt%. Treat at 35℃ for 45 minutes and then set at 145℃ for 5 minutes to obtain a home wear fabric containing mulberry silk.

[0094] Performance testing:

[0095] Air permeability: Different locations of the fabrics prepared in the examples and comparative examples were selected and tested using an air permeability meter according to GB / T 5453-1997. The air permeability of different locations of the samples was obtained and the average value was taken. The results are shown in Table 1.

[0096] Anti-pilling and anti-fuzzing properties: The fabrics prepared in the examples and comparative examples were cut into squares with a side length of 15cm and tested using a fabric abrasion tester. According to GB / T4802.2-2008, wool abrasive was used, and subjective rating was performed after 2000 abrasion cycles. The results are shown in Table 1.

[0097] Wrinkle recovery: The wrinkle recovery angle of the fabrics prepared according to the horizontal method test examples and comparative examples in GB / T 3819-1997 "Textiles - Determination of Wrinkle Recovery of Fabrics - Recovery Angle Method" was tested 5 times in each weft direction, and the average value was calculated. The results are shown in Table 1.

[0098] Rigidity and flexibility: According to GB / T 18318.1-2009, the bending length of the fabrics prepared in the examples and comparative examples was measured, and the bending resistance length of the fabric was calculated to evaluate the rigidity and flexibility of the samples. The results are shown in Table 1.

[0099]

[0100] Data Analysis:

[0101] As can be seen from the data of Examples 1-3 in Table 1, the homewear fabric containing mulberry silk prepared by the present invention has both high breathability and anti-pilling properties, and high wrinkle recovery, indicating that it has good elasticity. At the same time, the bending length is moderate, indicating that it has a certain degree of stiffness while having good flexibility, and can provide a good wearing experience while maintaining the shape of the fabric.

[0102] As can be seen from the data in Table 1 of Example 2 and Comparative Example 1, the amino groups on the surface of the solid carbon nanospheres can effectively improve the anti-pilling and anti-fuzzing properties of the fabric, and further improve the wrinkle recovery and bending length. This is mainly because the amino groups on the surface of the solid carbon nanospheres provide grafting sites for alkyl chains on the one hand, and cross-link with polylactic acid on the other hand. The solid carbon nanospheres cross-linked in polylactic acid can play a ball-bead effect, while the alkyl chains are interwoven in the molecular chains of polylactic acid, thereby enhancing the flexibility and slippage of the molecular chains, improving the elasticity and wrinkle resistance of the fabric, and improving the mechanical properties and durability of the fabric.

[0103] As can be seen from the data in Example 2 and Comparative Example 2 in Table 1, the grafting of alkyl chains can improve the breathability and wrinkle recovery of the fabric, and regulate the balance between softness and stiffness. This is mainly because the grafting of alkyl chains prevents the excessive cross-linking of solid carbon nanospheres in polylactic acid on the one hand, and on the other hand, it intersperses in the molecular chain, enhancing the flexibility of the molecular chain, thereby effectively regulating the softness and stiffness.

[0104] As can be seen from the data in Example 2 and Comparative Example 3 in Table 1, excessive grafting of palmitic acid leads to a decrease in the anti-pilling and anti-bending length of the fabric. This is mainly because excessive grafting of palmitic acid makes it difficult for solid carbon nanospheres to be grafted into polylactic acid, resulting in a decrease in the dispersion of solid carbon nanospheres in polylactic acid. This weakens the rolling effect and cross-linking effect of solid carbon nanospheres, leading to a decrease in the interaction force between polylactic acid molecular chains, a decrease in the mechanical properties and structural stability of the fabric, and ultimately affecting the anti-pilling and anti-bending performance.

[0105] As can be seen from the data in Example 2 and Comparative Example 4 in Table 1, the direct mixing of polylactic acid and alkyl chain modified solid carbon nanospheres followed by melt spinning leads to a decrease in anti-pilling and anti-bending length. This is mainly because the compatibility between polylactic acid and alkyl chains is poor, and the alkyl chains are difficult to fully extend, thus hindering the cross-linking of polylactic acid and the amino groups on the surface of solid carbon nanospheres, which in turn leads to the reinforcing effect of solid carbon nanospheres in polylactic acid.

[0106] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

Claims

1. A loungewear fabric containing mulberry silk, characterized in that, The yarn is obtained by blending mulberry silk short fibers and carbon ball modified polylactic acid short fibers to obtain blended yarn, and then by weaving and finishing. The blending ratio of the mulberry silk short fiber and carbon ball modified polylactic acid short fiber is any one of 60 / 40, 70 / 30 and 80 / 20; The preparation method of the carbon ball modified polylactic acid short fiber is as follows: S1: Disperse amino-containing solid carbon nanospheres in N,N-dimethylformamide, sonicate for 20-40 min, add palmitic acid, heat to 110-130℃, stir for 4-6 h, centrifuge, wash, and vacuum dry to obtain alkyl chain modified solid carbon nanospheres. S2: Add polylactic acid to N,N-dimethylformamide, heat to 110-130℃, stir for 20-40 min, then add alkyl chain modified solid carbon nanospheres, sonicate for 20-40 min, heat to 148-152℃, stir and reflux for 2.5-3.5 h, rotary evaporate, wash, and vacuum dry to obtain carbon sphere modified polylactic acid; S3: Carbon ball modified polylactic acid is prepared into long filaments by melt spinning machine, and then cut into carbon ball modified polylactic acid short fibers; In step S1, the solid carbon nanospheres containing amino groups have an average particle size of 400-600 nm and an amino content of 4%-5%. In step S1, the weight ratio of amino-containing solid carbon nanospheres, N,N-dimethylformamide, and palmitic acid is 1.5-2.5:15-25:0.1-0.

3. In step S2, the weight ratio of polylactic acid, N,N-dimethylformamide, and alkyl chain modified solid carbon nanospheres is 40-60:400-600:1.5-2.

5. The intrinsic viscosity of polylactic acid in step S2 is 1.1-1.3 dL / g; The carbon sphere modified polylactic acid short fibers have a fineness of 1.6-2.0 dtex and a length of 35-40 mm.

2. The loungewear fabric containing mulberry silk according to claim 1, characterized in that, The fineness of the mulberry silk short fibers is 1.2-1.6 dtex, and the length is 35-40 mm.

3. A method for preparing a loungewear fabric containing mulberry silk according to claim 1, characterized in that, Includes the following steps: (1) Cut the silkworm silk fibers into short silkworm silk fibers; (2) Mix mulberry silk short fibers and carbon ball modified polylactic acid short fibers, open, card, draw, roving, and spinning to obtain blended yarn; (3) The blended yarn is woven on a high-needle, high-density circular knitting machine to obtain a coarse fabric. (4) Add the coarse fabric to the finishing solution, treat it at 30-40℃ for 40-50 minutes, and then fix it at 140-150℃ for 3-8 minutes to obtain a homewear fabric containing mulberry silk.

4. The method for preparing home wear fabric containing mulberry silk according to claim 3, characterized in that, In step (2), the twist coefficient of the blended yarn is 300-340 and the fineness is 12.4-16.8 tex.

5. The method for preparing home wear fabric containing mulberry silk according to claim 3, characterized in that, In step (3), the warp density of the coarse fabric is 50-70 threads / cm, the weft density is 28-36 threads / cm, and the weight is 142-189 g / m². 2 .

6. The method for preparing home wear fabric containing mulberry silk according to claim 3, characterized in that, In step (4), the ratio of the coarse fabric to the finishing solution is 1:15-25.

7. The method for preparing home wear fabric containing mulberry silk according to claim 3, characterized in that, In step (4), the finishing solution is an aqueous softener solution with a concentration of 1.5wt%-2.5wt%, and the softener is polydimethylsiloxane.

8. The method for preparing home wear fabric containing mulberry silk according to claim 3, characterized in that, In step (4), the heat setting temperature is 140-150℃ and the time is 3-8 minutes.

Images