Antifibrillation finishing method of tussah silk knitted fabric

Abstract

The invention discloses an antifibrillating finishing method of tussah silk knitted fabric. The method comprises the following steps: degumming the tussah silk knitted fabric by adopting a dipping process for pretreatment; performing acid treatment on the pretreated tussah silk fabric; carrying out crosslinking treatment on the tussah silk fabric subjected to acid treatment; carrying out reaction termination treatment on the cross-linked fabric; carrying out anti-fuzzing and anti-pilling treatment on the fabric subjected to the reaction termination treatment; the fabric obtained after anti-pilling treatment is subjected to setting finishing through a high-temperature setting machine, and the tussah silk fabric which is good in anti-pilling property, good in abrasion resistance and small in strength loss is obtained. According to the process, the problems of white frost, fuzzing, pilling and the like of the tussah silk fabric in the wearing and using process can be solved, and the bad appearance of the tussah silk fabric in the wearing and using process is effectively improved.

Description

Technical Field

[0001] This invention relates to an antigen-fiberizing finishing method for tussah silk knitted fabrics, belonging to the technical field of finishing and modification application of tussah silk materials and their fabrics. Background Technology

[0002] Tussah silk fiber possesses excellent moisture absorption and wicking properties, breathability, and resistance to acid and alkali solvents, and is currently used in clothing and home textiles. Tussah silk fabrics have a natural, jewel-like soft luster and a unique style. However, during daily use and washing, tussah silk fabrics are prone to fibrillation, where fine fibrils peel off from the fiber surface. Under friction, this can easily cause pilling and fuzzing, resulting in localized whitening of the fabric surface and affecting its appearance. To address this issue, a glutaraldehyde-based finishing method has been developed to improve the insufficient cohesion between tussah silk fibrils, which leads to their peeling and subsequent fiber breakage, thereby enhancing the sustainable functionality of tussah silk fabrics.

[0003] Traditional singeing and shearing processes cause significant damage to the surface fibers of fabrics. Coating methods lack durability, and surface coatings significantly affect the fabric's moisture permeability, breathability, and hand feel. Patent application CN120158934A proposes a composite finishing process using polyurethane or acrylic resin as a crosslinking agent, combined with bio-enzyme pretreatment and plasma treatment, to improve the pilling resistance of knitted fabrics. However, this method has high processing costs and complex procedures, making it unsuitable for industrial production.

[0004] Tussah silk fibers are composed of amphiphilic amino acids. The polar residues in the chain segments provide a large number of reaction sites. Glutaraldehyde, which is commonly used in industrial production, is used as a cross-linking finishing agent to form a covalent cross-linking network between fibroin fibrils and between sericin and fibroin fibrils inside the fiber, thereby enhancing the cohesion between fibroin fibrils and the bonding effect of sericin on fibroin. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to use glutaraldehyde molecular modification technology to solidify the fibers in tussah silk fabric, reduce fibrillation, improve the appearance of the fabric, improve the pilling and fuzzing grade of the fabric, while maintaining the original softness, moisture permeability and breathability of the fabric, reducing production costs and simplifying the process.

[0006] The present invention specifically adopts the following technical solutions to solve the above problems; A method for antigen-fibrillating finishing of tussah silk knitted fabrics includes the following steps: Step 1): Pre-treat the tussah silk fabric by degumming using an impregnation process; Step 2): Acid treatment is applied to the pretreated tussah silk fabric; Step 3): Cross-link the acid-treated tussah silk fabric; Step 4): The cross-linked fabric is subjected to a reaction termination treatment; Step 5): Perform anti-pilling treatment on the fabric after the termination reaction treatment; Step 6): The fabric treated with anti-pilling and anti-fuzzing agents is then set and finished using a high-temperature setting machine.

[0007] Preferably, in step 1), the pretreatment solution used in the soaking process includes 0.2-1% sodium carbonate, 0.1-1% soap solution, 0.1-1% penetrant and the balance water, with the water to tussah silk fabric bath ratio of 10-100:1; the temperature of the pretreatment solution is 90-100℃ and the treatment time is 30-60 min.

[0008] Preferably, in step 2), the acid treatment uses at least one of glacial acetic acid, dilute hydrochloric acid, and citric acid, with a pH of 5-7; the acid treatment temperature is 40-60℃, and the time is 5-10 min.

[0009] Preferably, in step 3), the crosslinking agent used in the crosslinking treatment is glutaraldehyde, with a pH of 3-8, a crosslinking treatment time of 30-300 min, and a temperature of 20-60℃.

[0010] Preferably, in step 3), the pH of the crosslinking treatment is adjusted by glacial acetic acid, dilute hydrochloric acid, or citric acid.

[0011] Preferably, in step 4), the reaction termination treatment uses ethanolamine, sodium borohydride, or glycine with a mass concentration of 1-2% and a pH of 8-9; the reaction termination treatment temperature is 30-50°C, the time is 5-10 min, and after the reaction termination treatment, the mixture is treated with water at 20°C for 5-10 min.

[0012] Preferably, in step 4), the pH of the reaction termination treatment is adjusted by sodium carbonate, sodium bicarbonate, or sodium hydroxide.

[0013] Preferably, in step 5), the anti-pilling treatment uses an anti-pilling agent whose effective component is modified colloidal polysilicic acid with a concentration of 10~50g / L, a temperature of 20~50℃, and a treatment time of 5~20min; after the anti-pilling treatment, a horizontal rolling mill is used for one dip and one roll, with a roll residue rate of 50~70%.

[0014] Preferably, in step 6), the shaping and finishing process is divided into two stages: pre-drying and baking. The pre-drying stage is: drying in a hot air environment of 80~100℃ for 180~300s, and the baking stage is: baking at 130~160℃ for 60~150s.

[0015] Preferably, in step 6), the tussah silk fabric in the finishing process needs to be over-stretched, and the over-feeding is achieved by adjusting the speed difference of the guide rollers before and after the high-temperature finishing machine by 10-20%.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. It can effectively reduce "white frost" and "pilling" on fabrics during wear and use, and has low yellowing and excellent washability.

[0017] 2. While improving the appearance and smoothness of tussah silk, it has almost no impact on the moisture absorption and hydrophilicity of tussah silk. Attached Figure Description

[0018] Figure 1 A comparison chart of the pilling and fuzzing levels of tussah silk fabrics before and after finishing in Example 1; Figure 2 This is a comparison diagram of the fibrillation of tussah silk fabric before and after finishing in Example 1. Detailed Implementation

[0019] To make the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0020] The anti-pilling agent used in the examples is a commercially available product, and its active ingredient is modified colloidal polysilicic acid.

[0021] Example 1 A method for antigen-fibrillating finishing of tussah silk knitted fabrics includes the following steps: 1. Pre-treat the tussah silk knitted fabric with a pre-treatment solution consisting of 0.1% sodium carbonate, 0.3% soap solution, and 0.1% JFC by mass concentration, and treat at 98 ℃ for 30 min to obtain the pre-treated tussah silk fabric. 2. The pretreated tussah silk fabric is pickled in glacial acetic acid with pH=5.5 at 50℃ for 5 minutes. 3. The acid-treated tussah silk was subjected to cross-linking treatment. The cross-linking solution was glutaraldehyde with a pH of 5 and a mass concentration of 0.5%, and the cross-linking treatment was carried out at 50 ℃ for 30 min. 4. The cross-linked fabric is subjected to a termination treatment. The termination solution is 1.5% sodium borohydride, 0.1% JFC and 0.1% sodium carbonate by mass concentration. It is treated at 40 ℃ for 10 min. After the termination reaction is completed, it is treated in a constant temperature water bath at 20 ℃ for 10 min to obtain the antigen-fiberized fabric. 5. The antigen-fiberized fabric is subjected to anti-pilling treatment. The anti-pilling agent is modified colloidal polysilicic acid with a mass concentration of 10 g / L. The fabric is treated at 40 ℃ for 10 min to obtain anti-pilling fabric. 6. The fabric after anti-pilling treatment is processed using a horizontal rolling mill with a roll-off rate of 60%. Then, by adjusting the speed difference between the guide rollers before and after the high-temperature setting machine, the overfeed is made to 20%. The fabric is pre-dried at 80℃ for 180 s and then baked at 150℃ for 180 s to obtain the finished fabric.

[0022] The fibrillated microfibrils on the surface of the tussah silk fabric prepared above are significantly reduced, and it has mechanical properties, water absorption, washability, and anti-pilling properties. The results are shown in Table 1.

[0023] Example 2 A method for antigen-fibrillating finishing of tussah silk knitted fabrics includes the following steps: The tussah silk knitted fabric was pretreated with a pretreatment solution consisting of 0.1% sodium carbonate, 0.2% soap solution, and 0.2% JFC by mass concentration, and treated at 98 ℃ for 30 min to obtain the pretreated tussah silk fabric. 2. The pretreated tussah silk fabric is pickled in glacial acetic acid with pH=6 at 50℃ for 5 minutes. 3. The acid-treated tussah silk was subjected to cross-linking treatment. The cross-linking solution was glutaraldehyde with a pH of 6 and a mass concentration of 1%, and the cross-linking treatment was carried out at 50 ℃ for 60 min. 4. The cross-linked fabric is subjected to a termination treatment. The termination solution is 1% sodium borohydride, 0.2% JFC and 0.2% sodium carbonate. The treatment is carried out at 50 ℃ for 10 min. After the termination reaction is completed, it is treated in a constant temperature water bath at 20 ℃ for 5 min to obtain the antigen-fiberized fabric. 5. The antigen-fiberized fabric is subjected to anti-pilling treatment. The anti-pilling agent is modified colloidal polysilicic acid with a mass concentration of 30 g / L. The fabric is treated at 50 ℃ for 10 min to obtain anti-pilling fabric. 6. The fabric after anti-pilling treatment is processed using a horizontal rolling mill with a roll-off rate of 65%. Then, by adjusting the speed difference between the guide rollers before and after the high-temperature setting machine, the overfeed is made to 10%. The fabric is pre-dried at 80℃ for 240 s and then baked at 160℃ for 90 s to obtain the finished fabric.

[0024] The fibrillated microfibers on the surface of the tussah silk fabric prepared above were significantly reduced, and the fabric exhibited mechanical properties, water absorption, washability, and anti-pilling properties, as shown in Table 1.

[0025] Example 3 A method for antigen-fibrillating finishing of tussah silk knitted fabrics includes the following steps: 1. Pre-treat the tussah silk knitted fabric with a pre-treatment solution consisting of 0.1% sodium carbonate, 0.3% soap solution, and 0.2% JFC by mass concentration, and treat at 98 ℃ for 30 min to obtain the pre-treated tussah silk fabric. 2. The pretreated tussah silk fabric is pickled in glacial acetic acid with pH=5.5 at 50℃ for 5 minutes. 3. The acid-treated tussah silk was subjected to cross-linking treatment. The cross-linking solution was glutaraldehyde with a pH of 7 and a mass concentration of 0.5%, and the cross-linking treatment was carried out at 50 ℃ for 30 min. 4. The cross-linked fabric is subjected to a termination treatment. The termination solution is 2% sodium borohydride, 0.1% JFC and 0.2% sodium carbonate. The treatment is carried out at 40 ℃ for 15 min. After the termination reaction is completed, it is treated in a constant temperature water bath at 20 ℃ for 5 min to obtain the antigen-fiberized fabric. 5. The antigen-fiberized fabric is subjected to anti-pilling treatment. The anti-pilling agent is modified colloidal polysilicic acid with a mass concentration of 50 g / L. The fabric is treated at 40 ℃ for 15 min to obtain anti-pilling fabric. 6. The fabric after anti-pilling treatment is processed using a horizontal rolling mill with a roll-off rate of 55%. Then, by adjusting the speed difference between the guide rollers before and after the high-temperature setting machine, the overfeed is made to 15%. The fabric is pre-dried at 80℃ for 180 s and then baked at 140℃ for 180 s to obtain the finished fabric.

[0026] The fibrillated microfibers on the surface of the modified tussah silk fabric prepared above were significantly reduced, and it had mechanical properties, water absorption, washability, and anti-pilling properties. The results are shown in Table 1.

[0027] Example 4 A method for antigen-fibrillating finishing of tussah silk knitted fabrics includes the following steps: 1. Pre-treat the tussah silk knitted fabric with a pre-treatment solution consisting of 0.3% sodium carbonate, 0.3% soap solution, and 0.1% JFC by mass concentration, and treat at 98 ℃ for 30 min to obtain the pre-treated tussah silk fabric. 2. The pretreated tussah silk fabric is pickled in glacial acetic acid with pH=5 at 50℃ for 5 minutes. 3. The acid-treated tussah silk was subjected to cross-linking treatment. The cross-linking solution was glutaraldehyde with a pH of 8 and a mass concentration of 0.5%, and the cross-linking treatment was carried out at 50 ℃ for 60 min. 4. The cross-linked fabric is subjected to a termination treatment. The termination solution is 1.5% sodium borohydride, 0.1% JFC and 0.1% sodium carbonate by mass concentration. It is treated at 50 ℃ for 15 min. After the termination reaction is completed, it is treated in a constant temperature water bath at 20 ℃ for 10 min to obtain the antigen-fiberized fabric. 5. The antigen-fiberized fabric is subjected to anti-pilling treatment. The anti-pilling agent is modified colloidal polysilicic acid with a mass concentration of 40 g / L. The fabric is treated at 40 ℃ for 10 min to obtain anti-pilling fabric. 6. The fabric after anti-pilling treatment is processed using a horizontal rolling mill with a roll-off rate of 70%. Then, by adjusting the speed difference between the guide rollers before and after the high-temperature setting machine, the overfeed is made to 20%. The fabric is pre-dried at 80℃ for 100 seconds and then baked at 150℃ for 90 seconds to obtain the finished fabric.

[0028] The fibrillated microfibers on the surface of the tussah silk fabric prepared above were significantly reduced, and the fabric exhibited mechanical properties, water absorption, washability, and anti-pilling properties, as shown in Table 1.

[0029] Table 1. Performance Comparison of Tussah Silk Fabrics Before and After Finishing

Claims

1. A method for antigenic fibrillation finishing of tussah silk knitted fabric, characterized by, The method comprises the following steps: Step 1): degumming pretreatment of tussah silk fabric by using immersion process; Step 2): acid treatment of the pretreated tussah silk fabric; Step 3): crosslinking treatment of the acid-treated tussah silk fabric; Step 4): termination reaction treatment of the crosslinking-treated fabric; Step 5): anti-pilling treatment of the termination reaction-treated fabric; Step 6): setting finishing of the anti-pilling treated fabric by using a high-temperature setting machine.

2. The antigenic fibrillation finishing method of the silk of the wild silkworm according to claim 1, characterized in that, In the step 1), the pretreatment solution used in the immersion process comprises 0.2-1% of sodium carbonate, 0.1-1% of soap solution, 0.1-1% of penetrant, and the rest of water in terms of mass concentration; the bath ratio of water to tussah silk fabric is 10-100:1; the temperature of the pretreatment solution is 90-100 DEG C, and the treatment time is 30-60 min.

3. The antigenic fibrillation finishing method of the silk of the wild silkworm according to claim 1, characterized in that, In the step 2), the acid treatment uses at least one of glacial acetic acid, dilute hydrochloric acid, and citric acid, and the pH is 5-7; the temperature of the acid treatment is 40-60 DEG C, and the time is 5-10 min.

4. The antigenic fibrillation finishing method of the silk of the wild silkworm according to claim 1, characterized in that, In the step 3), the crosslinking agent used in the crosslinking treatment is glutaraldehyde, the pH is 3-8, the crosslinking treatment time is 30-300 min, and the temperature is 20-60 DEG C.

5. The antigenic fibrillation finishing method of the silk of the wild silkworm according to claim 1, characterized in that, In the step 3), the pH of the crosslinking treatment is adjusted by using glacial acetic acid, dilute hydrochloric acid, or citric acid.

6. The antigenic fibrillation finishing method of the silk of the wild silkworm of claim 1, characterized by, In the step 4), the termination reaction treatment uses 1-2% of ethanolamine, sodium borohydride, or glycine in terms of mass concentration and with a pH of 8-9; the temperature of the termination reaction treatment is 30-50 DEG C, the time is 5-10 min, and after the termination reaction treatment, the fabric is treated with 20 DEG C water for 5-10 min.

7. The antigenic fibrillation finishing method of the silk of the wild silkworm of claim 1, characterized by, In the step 4), the pH of the termination reaction treatment is adjusted by using sodium carbonate, sodium bicarbonate, or sodium hydroxide.

8. The antigenic fibrillation finishing method of the silk of the wild silkworm of claim 1, characterized by, In the step 5), the anti-pilling agent used in the anti-pilling treatment has a modified colloidal polysilicic acid as an effective component, a concentration of 10-50 g / L, and a temperature of 20-50 DEG C, and the treatment time is 5-20 min; after the anti-pilling treatment, the fabric is subjected to one-dip-one-roll by using a horizontal padder with a rolling rate of 50-70%.

9. The antigenic fibrillation finishing method of the silk of the wild silkworm of claim 1, characterized in that, In the step 6), the setting finishing is divided into two stages of pre-drying and baking, wherein the pre-drying stage is drying at 80-100 DEG C hot air environment for 180-300 s, and the baking stage is baking at a temperature of 130-160 DEG C for 60-150 s.

10. The antigenic fibrillation finishing method of the silk of the wild silkworm of claim 1, characterized in that, In the step 6), the tussah silk fabric is overfed during the setting finishing process, and the overfeeding is realized by adjusting the speed difference between the guide rollers before and after the high-temperature setting machine to 10-20%.

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