Processing technology of mulberry silk fabric clothes resistant to repeated machine washing and free of deformation

Abstract

The invention belongs to the technical field of mulberry silk fabric processing, and particularly relates to a processing technology of mulberry silk fabric clothes resistant to repeated machine washing and free of deformation. The preparation method comprises the following steps: firstly, soaking and depositing a layer of sinapic acid in a nylon wire, then soaking the nylon wire in a mixed ethanol solution consisting of 1-heptanethiol and a photoinitiator for grafting reaction, and finally depositing a layer of N-trimethyl chitosan to prepare a modified nylon wire, so that the winding and entangling phenomena during weaving are reduced, and the mulberry silk and the modified nylon wire in a mass ratio of (20-29): (71-80) are adopted to prepare the mulberry silk / modified nylon composite material. Yarn splicing, high twisting and preshrinking are carried out in a ring spinning mode to form composite silk threads, woven garment pieces are degummed, preshrinked and shaped through steam firstly, and then the mulberry silk fabric garment is woven, so that the garment has excellent wear resistance and is not prone to deformation.

Description

Technical Field

[0001] The invention belongs to the technical field of mulberry silk fabric processing, and in particular relates to a processing technology for mulberry silk fabric clothing which is resistant to repeated machine washing and does not deform. Background Art

[0002] Mulberry silk is one of the earliest animal fibers used by humans. It has the advantages of being strong, soft, moisture-absorbent, breathable, and skin-friendly. However, mulberry silk fabrics are easily deformed, not wear-resistant, and easy to breed bacteria. Therefore, in order to further enhance the performance of mulberry silk fabrics and expand the application field of mulberry silk fabrics, the original fiber preparation method and functional finishing method can be used for modification. The original fiber preparation method mainly changes the original properties of the fiber through various methods to produce modified fibers with specific properties. The original fiber preparation method introduces new functional fibers, giving silk products functionality from the fiber raw material level; the functional finishing method is based on the original fiber preparation, and the fabric obtains specific functionality through subsequent treatment. The functional finishing method is relatively simple to operate, but it introduces more chemical reagents, and the fabric needs to be subjected to a more sophisticated impurity removal process later.

[0003] The Chinese invention patent with publication number CN109468724B discloses a production process of a graphene nylon composite fiber and mulberry silk interwoven fabric. The specific steps are: the weave is a five-piece satin weave, the finished product warp density is 129.6 strands / cm, the finished product weft density is 47 strands / cm, the finished product width is 108cm, and the finished product weight is 83.7g / m 2 ; 70D / 68F single-layer graphene nylon composite fiber DTY is wound onto the surface of 20D low-temperature spandex to obtain a 1200-1500T / m, 2S2Z coated weft; 23dtex mulberry silk f1 T0 warp is interwoven with the above-mentioned coated weft to obtain a fabric; the fabric finishing process is: wet heat initial shaping, pretreatment, initial scouring to remove part of the silk, rescouring to remove the remaining sericin and low-temperature re-shaping on a tentering setting machine in an overfeeding manner; the fabric is printed or dyed to obtain a finished product. However, the prior art has the technical problem that the wear resistance and water washing deformation of clothing products are not improved by improving the raw materials of mulberry silk fabrics. Summary of the invention

[0004] The purpose of the present invention is to provide a processing technology for mulberry silk fabric clothing that can withstand repeated machine washing without deformation, which is used to solve the technical problem that the prior art has not improved the wear resistance and washing deformation of clothing products by improving the raw materials of mulberry silk fabrics.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A processing technology for producing mulberry silk fabric clothing that is resistant to repeated machine washing and does not deform, comprising the following steps:

[0007] S1, spinning mulberry silk and modified nylon yarn in a ring spinning manner, twisting in a Z direction, twisting at 900 to 1000 twists per meter, and pre-shrinking them into composite yarns;

[0008] S2, the composite silk thread is used as warp and weft yarn, and the garment pieces are knitted with an 18-needle flat knitting machine, and the garment pieces are soaked in deionized water at 40-50° C. for 30-50 minutes, and then steam degummed at a pressure of 0.3-0.5 MPa and a temperature of 140-150° C. for 60-75 minutes, and pre-shrinked and high-temperature fixed to obtain mulberry silk fabrics;

[0009] S3. Make clothing from mulberry silk fabrics through a 24-needle sewing process.

[0010] Preferably, the mulberry silk in S1 is of 5A grade, the average diameter of the modified nylon yarn is 12-18 μm, and the breaking strength is 6-7 cN / dtex.

[0011] Preferably, the mass ratio of mulberry silk to modified nylon yarn in S1 is 71-80:20-29.

[0012] Preferably, the average fineness of the composite yarn in S1 is 14-17 tex.

[0013] Preferably, the method for preparing the modified nylon yarn in S1 comprises the following steps:

[0014] S11, soaking the nylon yarn in a pretreatment solution at 70-80° C. for 0.5-1 h, and washing with 1-2 wt % acetic acid until the pH value is 4-5 for pretreatment;

[0015] S12, soaking the pretreated nylon yarn in a 6-7 g / L sinapinic acid solution for 0.5-1 h, taking it out and adding it to a mixed ethanol solution consisting of 2-4 g / L 1-heptyl mercaptan and 0.01-0.03 g / L photoinitiator, irradiating it with an ultraviolet lamp for 0.5-1 h, and drying it to obtain the grafted nylon yarn;

[0016] S13, dissolving 1-2 g of N-trimethyl chitosan in 1-2 L of deionized water at 50-60° C., soaking the grafted nylon filaments for 30-40 min, taking out and drying at 50-60° C. to obtain modified nylon filaments.

[0017] Preferably, the pretreatment solution in S11 is composed of 8-10 g / L sodium hydroxide solution, 5-7 g / L dodecyl polyoxyethylene ether, 5-10 g / L sodium dodecyl sulfonate, and 0.5-1 g / L dibutyltin dilaurate.

[0018] Preferably, the bath ratio of the nylon yarn to the mustard acid solution in S11 is 1:150-200.

[0019] Preferably, the photoinitiator in S12 is any one or more combinations of benzoin isopropyl ether, benzophenone, and isopropylthioxanthone.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] 1. The present invention adopts mulberry silk and modified nylon yarn in a mass ratio of 20-29:71-80, and uses ring spinning to assemble yarn, high twist, and pre-shrink into composite silk thread. The knitted garment pieces are first pre-shrinked and shaped by steam degumming, and then knitted to obtain mulberry silk fabric clothing. The modified nylon yarn has high strength and stability. The composite silk thread structure made of mulberry silk and modified nylon yarn enables the modified nylon yarn to disperse stress and maintain good shape stability when the composite silk thread is subjected to external force, thereby reducing the wear degree of mulberry silk fiber, so that the clothes have excellent wear resistance and non-deformation performance.

[0022] 2. The present invention first soaks the nylon thread to deposit a layer of sinapinic acid, then soaks it in a mixed ethanol solution consisting of 1-heptyl mercaptan and a photoinitiator to carry out a grafting reaction, and finally deposits a layer of modified nylon thread made of N-trimethyl chitosan, thereby reducing the tangled yarn phenomenon during weaving, and by grafting 1-heptyl mercaptan, a protective film is constructed on the surface of the nylon thread, so that the nylon thread has excellent wear resistance and stain resistance. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Embodiment 1, a processing technology of a mulberry silk fabric garment that can withstand repeated machine washing without deformation, comprising the following steps:

[0025] S1, mulberry silk and modified nylon yarn with an average diameter of 12.8 μm and a breaking strength of 6.5 cN / dtex are ring-spun at a mass ratio of 80:20, with a twist direction of Z and a high twist of 1000 twists per meter, and pre-shrunk into a composite yarn with an average fineness of 15.9 tex;

[0026] S2, the composite silk thread is used as warp and weft yarn, and the garment pieces are knitted with an 18-needle flat knitting machine. The garment pieces are soaked in deionized water at 40°C for 30 minutes, and then steam degummed at a pressure of 0.5 MPa and a temperature of 140°C for 60 minutes, and pre-shrinked and high-temperature fixed to obtain mulberry silk fabrics;

[0027] S3. Make clothing from mulberry silk fabrics through a 24-needle sewing process.

[0028] The method for preparing the modified nylon yarn of this embodiment comprises the following steps:

[0029] S11, after preparing a pretreatment solution with 10 g / L sodium hydroxide solution, 6 g / L dodecyl polyoxyethylene ether, 5 g / L sodium dodecyl sulfonate, and 1 g / L dibutyltin dilaurate, immerse the nylon thread in the pretreatment solution at 80° C. for 0.5 h at a bath ratio of 1:150, and pickle with 2 wt % acetic acid until the pH is 4 for pretreatment;

[0030] S12, soaking the pretreated nylon yarn in a 7 g / L sinapinic acid solution for 1 hour, taking it out and adding it into a mixed ethanol solution consisting of 4 g / L 1-heptyl mercaptan and 0.01 g / L benzoin isopropyl ether photoinitiator, irradiating it with an ultraviolet lamp for 1 hour, and drying it to obtain a grafted nylon yarn;

[0031] S13, dissolving 2 g of N-trimethyl chitosan in 1 L of deionized water at 50° C., soaking the grafted nylon filaments for 30 minutes, taking out and drying at 50° C. to obtain modified nylon filaments.

[0032] Embodiment 2, a processing technology of a mulberry silk fabric garment that can withstand repeated machine washing without deformation in this embodiment, comprises the following steps:

[0033] S1, mulberry silk and modified nylon yarn with an average diameter of 14.1 μm and a breaking strength of 6.8 cN / dtex are spun in a ring spinning method at a mass ratio of 80:20, with a twist direction of Z and a high twist of 900 twists per meter, and pre-shrunk into a composite yarn with an average fineness of 16.7 tex;

[0034] S2, the composite silk thread is used as warp and weft yarn, and the garment pieces are knitted with an 18-needle flat knitting machine. The garment pieces are soaked in deionized water at 40°C for 30 minutes, and then steam degummed at a pressure of 0.5 MPa and a temperature of 140°C for 60 minutes, and pre-shrinked and high-temperature fixed to obtain mulberry silk fabrics;

[0035] S3. Make clothing from mulberry silk fabrics through a 24-needle sewing process.

[0036] The method for preparing the modified nylon yarn of this embodiment comprises the following steps:

[0037] S11, after preparing a pretreatment solution with 10 g / L sodium hydroxide solution, 6 g / L dodecyl polyoxyethylene ether, 6 g / L sodium dodecyl sulfonate, and 0.8 g / L dibutyltin dilaurate, immerse the nylon thread in the pretreatment solution at 80° C. for 0.5 h at a bath ratio of 1:160, and pickle with 2 wt % acetic acid until the pH is 4 for pretreatment;

[0038] S12, soaking the pretreated nylon filaments in a 6 g / L sinapinic acid solution for 0.5 h, taking out and adding them into a mixed ethanol solution consisting of 4 g / L 1-heptyl mercaptan and 0.02 g / L benzophenone photoinitiator, irradiating them with an ultraviolet lamp for 1 h, and drying them to obtain grafted nylon filaments;

[0039] S13, dissolving 1.2 g of N-trimethyl chitosan in 1 L of deionized water at 50° C., soaking the grafted nylon filaments for 30 minutes, taking out and drying at 50° C. to obtain modified nylon filaments.

[0040] Embodiment 3, a processing technology of a mulberry silk fabric garment that can withstand repeated machine washing without deformation in this embodiment, comprises the following steps:

[0041] S1, mulberry silk and modified nylon yarn with an average diameter of 15.6 μm and a breaking strength of 6.6 cN / dtex are spun in a ring spinning method at a mass ratio of 80:20, with a twist direction of Z and a high twist of 950 twists per meter, and pre-shrunk into a composite yarn with an average fineness of 15.4 tex;

[0042] S2, the composite silk thread is used as warp and weft yarn, and the garment pieces are knitted with an 18-needle flat knitting machine. The garment pieces are soaked in deionized water at 40°C for 50 minutes, and then steam degummed at a pressure of 0.5 MPa and a temperature of 150°C for 70 minutes, and pre-shrinked and high-temperature fixed to obtain mulberry silk fabrics;

[0043] S3. Make clothing from mulberry silk fabrics through a 24-needle sewing process.

[0044] The method for preparing the modified nylon yarn of this embodiment comprises the following steps:

[0045] S11, after preparing a pretreatment solution of 9 g / L sodium hydroxide solution, 7 g / L dodecyl polyoxyethylene ether, 5 g / L sodium dodecyl sulfonate, and 0.5 g / L dibutyltin dilaurate, immerse the nylon thread in the pretreatment solution at 70° C. for 1 h at a bath ratio of 1:170, and pickle with 2 wt % acetic acid until the pH is 5 for pretreatment;

[0046] S12, soaking the pretreated nylon filaments in a 6.5 g / L sinapinic acid solution for 1 h, taking out and adding them into a mixed ethanol solution consisting of 4 g / L 1-heptyl mercaptan and 0.02 g / L benzophenone photoinitiator, irradiating them with an ultraviolet lamp for 1 h, and drying them to obtain grafted nylon filaments;

[0047] S13, dissolving 1.8 g of N-trimethyl chitosan in 1 L of deionized water at 50° C., soaking the grafted nylon filaments for 30 minutes, taking out and drying at 50° C. to obtain modified nylon filaments.

[0048] Embodiment 4, a processing technology of a mulberry silk fabric garment that can withstand repeated machine washing without deformation in this embodiment, comprises the following steps:

[0049] S1. Splice mulberry silk and modified nylon yarn with an average diameter of 12.8 μm and a breaking strength of 6.5 cN / dtex in a mass ratio of 75:25 by ring spinning, with a twist direction of Z and a high twist of 1000 twists per meter, and pre-shrink them into a composite yarn with an average fineness of 15.9 tex;

[0050] S2, the composite silk thread is used as warp and weft yarn, and the garment pieces are knitted with an 18-needle flat knitting machine. The garment pieces are soaked in deionized water at 40°C for 40 minutes, and then steam degummed at a pressure of 0.35 MPa and a temperature of 140°C for 75 minutes, and pre-shrinked and high-temperature fixed to obtain mulberry silk fabrics;

[0051] S3. Make clothing from mulberry silk fabrics through a 24-needle sewing process.

[0052] The method for preparing the modified nylon yarn of this embodiment comprises the following steps:

[0053] S11, after preparing a pretreatment solution with 10 g / L sodium hydroxide solution, 6 g / L dodecyl polyoxyethylene ether, 5 g / L sodium dodecyl sulfonate, and 1 g / L dibutyltin dilaurate, immerse the nylon thread in the pretreatment solution at 80° C. at a bath ratio of 1:180 for 0.5 h, and pickle with 2 wt % acetic acid until the pH is 4 for pretreatment;

[0054] S12, soaking the pretreated nylon yarn in a 7 g / L sinapinic acid solution for 1 hour, taking it out and adding it into a mixed ethanol solution consisting of 4 g / L 1-heptyl mercaptan and 0.01 g / L benzoin isopropyl ether photoinitiator, irradiating it with an ultraviolet lamp for 1 hour, and drying it to obtain a grafted nylon yarn;

[0055] S13, dissolving 1.5 g of N-trimethyl chitosan in 1 L of deionized water at 60° C., soaking the grafted nylon filaments for 30 min, taking out and drying at 50° C. to obtain modified nylon filaments.

[0056] Embodiment 5, a processing technology of a mulberry silk fabric garment that can withstand repeated machine washing without deformation according to this embodiment, comprises the following steps:

[0057] S1, mulberry silk and modified nylon yarn with an average diameter of 12.8 μm and a breaking strength of 6.5 cN / dtex are ring-spun at a mass ratio of 71:29, with a twist direction of Z and a high twist of 1000 twists per meter, and pre-shrunk into a composite yarn with an average fineness of 14.2 tex;

[0058] S2, the composite silk thread is used as warp and weft yarn, and the garment pieces are knitted with an 18-needle flat knitting machine. The garment pieces are soaked in deionized water at 40°C for 30 minutes, and then steam degummed at a pressure of 0.5 MPa and a temperature of 150°C for 70 minutes, and pre-shrinked and high-temperature fixed to obtain mulberry silk fabrics;

[0059] S3. Make clothing from mulberry silk fabrics through a 24-needle sewing process.

[0060] The method for preparing the modified nylon yarn of this embodiment comprises the following steps:

[0061] S11, after preparing a pretreatment solution with 8 g / L sodium hydroxide solution, 6 g / L dodecyl polyoxyethylene ether, 5 g / L sodium dodecyl sulfonate, and 0.6 g / L dibutyltin dilaurate, immerse the nylon thread in the pretreatment solution at 80°C for 0.5 h at a bath ratio of 1:190, and pickle with 2 wt % acetic acid until the pH is 4.5 for pretreatment;

[0062] S12, soaking the pretreated nylon yarn in a 6.8 g / L sinapinic acid solution for 1 h, taking it out and adding it into a mixed ethanol solution consisting of 4 g / L 1-heptylthiol and 0.01 g / L isopropylthioxanthone photoinitiator, irradiating it with an ultraviolet lamp for 1 h, and drying it to obtain a grafted nylon yarn;

[0063] S13, dissolving 1 g of N-trimethyl chitosan in 2 L of deionized water at 55° C., soaking the grafted nylon filaments for 30 min, taking out and drying at 55° C. to obtain modified nylon filaments.

[0064] Embodiment 6, a processing technology of a mulberry silk fabric garment that can withstand repeated machine washing without deformation in this embodiment, comprises the following steps:

[0065] S1, mulberry silk and modified nylon yarn with an average diameter of 12.8 μm and a breaking strength of 6.5 cN / dtex are ring-spun at a mass ratio of 80:20, with a twist direction of Z and a high twist of 1000 twists per meter, and pre-shrunk into a composite yarn with an average fineness of 15.9 tex;

[0066] S2, the composite silk thread is used as warp and weft yarn, and the garment pieces are knitted with an 18-needle flat knitting machine. The garment pieces are soaked in deionized water at 40°C for 30 minutes, and then steam degummed at a pressure of 0.4 MPa and a temperature of 150°C for 60 minutes, and pre-shrinked and high-temperature fixed to obtain mulberry silk fabrics;

[0067] S3. Make clothing from mulberry silk fabrics through a 24-needle sewing process.

[0068] The method for preparing the modified nylon yarn of this embodiment comprises the following steps:

[0069] S11, after preparing a pretreatment solution with 10 g / L sodium hydroxide solution, 6 g / L dodecyl polyoxyethylene ether, 5 g / L sodium dodecyl sulfonate, and 1 g / L dibutyltin dilaurate, immerse the nylon thread in the pretreatment solution at 70° C. at a bath ratio of 1:200 for 0.5 h, and pickle with 2 wt % acetic acid until the pH is 4 for pretreatment;

[0070] S12, soaking the pretreated nylon yarn in a 7 g / L sinapinic acid solution for 1 h, taking it out and adding it into a mixed ethanol solution consisting of 4 g / L 1-heptylthiol and 0.03 g / L isopropylthioxanthone photoinitiator, irradiating it with an ultraviolet lamp for 1 h, and drying it to obtain a grafted nylon yarn;

[0071] S13, dissolving 2 g of N-trimethyl chitosan in 1 L of deionized water at 50° C., soaking the grafted nylon filaments for 30 minutes, taking out and drying at 50° C. to obtain modified nylon filaments.

[0072] Comparative Example 1: The difference between this comparative example and Example 1 is that the garment pieces are first woven into clothes and then subjected to high-temperature degumming treatment.

[0073] Comparative Example 2: The difference between this comparative example and Example 1 is that the modified nylon yarn is replaced by nylon 6 fiber.

[0074] Performance Testing

[0075] According to the standards specified in FZ / T 43015-2021 "Mulberry Silk Knitted Garments", the products of each embodiment and comparative example were sent to a testing agency for testing. The test results are shown in Table 1 below:

[0076] Table 1

[0077]

[0078]

[0079] It can be seen from the data shown in the above table that the dimensional change rate of the samples obtained in each embodiment is less than -7.0 in the vertical direction and less than -6.0 in the horizontal direction. In comparative example 1, the clothes are first woven and then subjected to high-temperature degumming treatment, so that the sample shrinks slightly after 70 times of water washing, indicating that the processing technology of the present invention has the ability to make the clothes have excellent wear resistance and non-deformation properties.

[0080] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0081] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A processing technology for producing mulberry silk fabric clothing that is resistant to repeated machine washing and does not deform, characterized in that: The steps include: S1. Splicing mulberry silk and modified nylon yarn by ring spinning, twisting in Z direction, twisting at 900-1000 twists per meter, and pre-shrinking into composite yarn; S2, the composite silk thread is used as warp and weft yarn, and the garment pieces are knitted with an 18-needle flat knitting machine, and the garment pieces are soaked in deionized water at 40-50° C. for 30-50 minutes, and then steam degummed at a pressure of 0.3-0.5 MPa and a temperature of 140-150° C. for 60-75 minutes, and pre-shrinked and high-temperature fixed to obtain mulberry silk fabrics; S3. Make clothing from mulberry silk fabrics through a 24-needle sewing process.

2. The processing technology of the mulberry silk fabric clothing that can withstand repeated machine washing and does not deform according to claim 1, characterized in that: The mulberry silk in S1 is of 5A grade, the average diameter of the modified nylon yarn is 12-18 μm, and the breaking strength is 6-7 cN / dtex.

3. The processing technology of the mulberry silk fabric clothing that can withstand repeated machine washing without deformation according to claim 1 is characterized in that: The mass ratio of mulberry silk to modified nylon yarn in S1 is 71-80:20-29; the average fineness of the composite yarn is 14-17 tex.

4. The processing technology of the mulberry silk fabric clothing that can withstand repeated machine washing without deformation according to claim 1 is characterized in that: The method for preparing the modified nylon yarn in S1 comprises the following steps: S11, soaking the nylon yarn in a pretreatment solution at 70-80° C. for 0.5-1 h, and washing with 1-2 wt % acetic acid until the pH value is 4-5 to obtain a pretreated nylon yarn; S12, soaking the pretreated nylon yarn in a 6-7 g / L sinapinic acid solution for 0.5-1 h, taking it out and adding it to a mixed ethanol solution consisting of 2-4 g / L 1-heptyl mercaptan and 0.01-0.03 g / L photoinitiator, irradiating it with an ultraviolet lamp for 0.5-1 h, and drying it to obtain the grafted nylon yarn; S13, dissolving 1-2 g of N-trimethyl chitosan in 1-2 L of deionized water at 50-60° C., soaking the grafted nylon filaments for 30-40 min, taking out and drying at 50-60° C. to obtain modified nylon filaments.

5. The processing technology of the mulberry silk fabric clothing that can withstand repeated machine washing without deformation according to claim 4 is characterized in that: The pretreatment solution in S11 is composed of 8-10 g / L sodium hydroxide solution, 5-7 g / L dodecyl polyoxyethylene ether, 5-10 g / L sodium dodecyl sulfonate, and 0.5-1 g / L dibutyltin dilaurate.

6. The processing technology of the mulberry silk fabric clothing that can withstand repeated machine washing without deformation according to claim 4 is characterized in that: The bath ratio of the nylon filament to the mustard acid solution in S11 is 1:150-200, and the photoinitiator in S12 is any one or more combinations of benzoin isopropyl ether, benzophenone, and isopropylthioxanthone.

Images