Technological method for improving fuzzing and pilling of skin-friendly elastic fabric

Abstract

The invention relates to the technical field of composite fiber materials, in particular to a technological method for improving fuzzing and pilling of skin-friendly stretch fabric. The method comprises the following steps: step 1: (1) covering 40D spandex with chinlon DTY 70D / 68F in an air manner, and twisting for 280-320 T / m to obtain warp yarns; (2) covering 40D spandex with chinlon DTY 70D / 68F in an air manner, and twisting the chinlon DTY 70D / 68F to 280-320 T / m to obtain weft yarns a; dTY 70D / 48F gauze-free yarns are used as weft yarns b; weft yarns a and weft yarns b in a ratio of (1.5-2.5): 1 are used as weft yarns; (3) weaving the warp yarns and the weft yarns to obtain gray fabric; 2, after the gray fabric is connected, desizing and pre-shaping are conducted in sequence, and a fabric A is obtained; 3, the fabric A is dyed and then placed in the waterproof finishing liquid to be padded, and a finished product is shaped; the skin-friendly elastic fabric is obtained.

Description

Technical Field

[0001] The invention relates to the technical field of composite fiber materials, in particular to a process for improving the pilling of skin-friendly elastic fabrics. Background Art

[0002] As people's living standards continue to improve and their demands for health and comfort increase, stretch fabric, a fabric with excellent stretchability and resilience that is widely used in sportswear, underwear and other products, has become popular for its comfortable wearing experience and ability to maintain the shape of clothing.

[0003] The main components of chemical fiber stretch fabrics are polyester, nylon, spandex, etc. Since chemical fibers have low adhesion between fibers and high fiber strength, they have good bending resistance, torsion resistance and wear resistance. These characteristics cause the fibers to easily slip out when subjected to external friction, forming small ball-like protrusions, and once formed, they are not easy to fall off quickly. In addition, chemical fiber fabrics will generate static electricity during friction, and static electricity will entangle together to form balls. In addition, fabrics with loose tissue structure are more likely to allow fibers to protrude from the surface and form pills. Improper weaving methods or defects in the weaving process may also cause pilling. From the consumer's perspective, long-term friction when wearing, improper washing methods, and improper drying methods will aggravate the pilling of chemical fiber stretch fabrics.

[0004] At present, the common practice of weaving and dyeing factories for skin-friendly stretch fabrics is to use empty-wrapped yarn to weave, which meets customer needs and has qualified test results, but pilling occurs during the wearing process of consumers. If machine-wrapped yarn is used for weaving, pilling will be significantly improved, but for customers, the cost will increase, and for consumers, the hand feel is hard and uncomfortable to wear. Although corresponding waterproofing agents and softeners are added in the overall process to increase the water-repellent properties of the fabric and improve the hand feel of chemical fiber fabrics, the fabric will have pilling problems when it is made into clothing later. Pilling occurs during the use and wearing process of consumers, leading to consumer returns. This increases the cost of the enterprise and reduces the relevance between the enterprise and consumers.

[0005] In summary, it is of great significance to prepare a skin-friendly stretch fabric. Summary of the invention

[0006] The object of the present invention is to provide a process for improving the pilling of skin-friendly stretch fabrics, so as to solve the problems raised in the above-mentioned background technology.

[0007] A process for improving pilling of skin-friendly stretch fabrics, comprising the following steps:

[0008] Step 1: (1) nylon DTY 70D / 68F is wrapped with 40D spandex and twisted by 280-320 T / m to obtain warp yarn; (2) nylon DTY 70D / 68F is wrapped with 40D spandex and twisted by 280-320 T / m to obtain weft yarn a; DTY 70D / 48F mesh-free yarn is used as weft yarn b; weft yarn a and weft yarn b are used as weft yarn in a ratio of 1.5-2.5:1; (3) the warp yarn and the weft yarn are woven to obtain grey cloth;

[0009] Step 2: After the grey fabric is joined, desizing and pre-forming are performed in sequence to obtain fabric A;

[0010] Step 3: After dyeing fabric A, place it in a waterproof finishing liquid for padding and finalizing the finished product to obtain a skin-friendly stretch fabric.

[0011] More optimally, in step 1, the width of the grey cloth is 140±5cm, and the weight is 206-226g / m 2 ; The warp density is 158~160T / inch, and the weft density is 145~148T / inch.

[0012] More optimally, in step 2, in the desizing process, the temperature is 90-100°C and the speed is 30-40 m / min; in the pre-forming process, firstly, the pre-forming is performed at a speed of 15-20 m / min in a 2-3 g / L antioxidant solution; then, the pre-forming is performed at a speed of 20-25 m / min at 185-195°C;

[0013] The output width of the fabric A is 1 to 2 cm wider than that of the grey fabric.

[0014] In a further embodiment, the antioxidant is a hydrazine derivative preparation.

[0015] More optimally, in step 3, the process parameters for shaping the finished product are a temperature of 170-180° C., 5-10 overfeeds, and an air volume of 45-50%; and a rolling rate of 70-80%.

[0016] More optimally, the waterproof finishing liquid includes the following raw materials: 30-70 g / L of waterproof agent, 15-25 g / L of softener, 5-7 g / L of finishing agent, 4-6 g / L of antistatic agent, 0.5-1 g / L of penetrant, and the solvent is deionized water. Among them, the formula is a fluorine-containing waterproof finishing liquid; the waterproof agent is a fluorine-based waterproof and oil-proof agent; the finishing agent is a quaternary ammonium salt formaldehyde-free color fixing agent.

[0017] More optimally, the waterproof finishing liquid includes the following raw materials: waterproofing agent 30-70g / L, softening agent 8-10g / L, penetrant 0.5-1g / L, antistatic agent 4-6g / L, cross-linking agent 7-9g / L, anti-bend agent 7-9g / L, stiffening agent 6-8g / L, and the solvent is deionized water. Among them, the formula is a fluorine-free waterproof finishing liquid, the waterproofing agent is an organic silicon waterproofing agent; the cross-linking agent is a textile curing agent; the anti-bend agent is JF-503 anti-bend agent; and the stiffening agent is an environmentally friendly stiffening agent.

[0018] In the plan, the use of softeners is reduced, and the use of anti-slip agents and cross-linking agents is increased. Cross-linking agents and stiffening agents can improve pilling, but the dosage should not be too high, so as not to affect the feel and cause new problems such as additive spots.

[0019] More optimally, the softener is a silicone softener; and the penetrant is a non-ionic penetrant.

[0020] Step 1: (1) adding octamethylcyclotetrasiloxane, tetraethylammonium hydroxide and 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane to tetrahydrofuran, reacting at 100-120° C. for 4-6 hours to obtain modified siloxane; (2) adding methacrylic acid and modified siloxane to tetrahydrofuran, reacting at 150-165° C. for 3-5 hours, purifying and drying to obtain modified silicone oil;

[0021] Step 2: under a nitrogen atmosphere, adding isophorone diisocyanate, zinc complex glycerol, and dibutyltin dilaurate to tetrahydrofuran, reacting at 60-80° C. for 1-2 hours, then adding ethylene glycol and reacting at 40-60° C. for 1-2 hours to obtain intermediate A; adding hydroxyethyl methacrylate and reacting at 50-70° C. for 2-3 hours to obtain a polyurethane prepolymer;

[0022] Step 3: Under a nitrogen atmosphere, react the modified silicone oil and the polyurethane prepolymer at 40-60° C. for 2-4 hours, filter and purify to obtain an antistatic agent.

[0023] More optimally, the modified siloxane comprises the following components: by mass, 12 to 14 parts of octamethylcyclotetrasiloxane, 0.02 to 0.04 parts of tetraethylammonium hydroxide, 1 to 2 parts of 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane, and 40 to 50 parts of tetrahydrofuran;

[0024] The modified silicone oil comprises the following components: 1 to 2 parts of methacrylic acid, 6 to 9 parts of modified siloxane, and 30 to 40 parts of tetrahydrofuran, by mass.

[0025] The polyurethane prepolymer comprises the following components: by weight, 9 to 12 parts of isophorone diisocyanate, 2 to 3 parts of zinc complex glycerol, 0.1 to 0.3 parts of dibutyltin dilaurate, 50 to 60 parts of tetrahydrofuran, 1 to 2 parts of ethylene glycol, and 3 to 4 parts of hydroxyethyl methacrylate;

[0026] The raw materials of the antistatic agent include modified silicone oil and polyurethane prepolymer in a mass ratio of 10 to 12:1.

[0027] In the scheme, a waterproofing agent solution obtained by mixing polyurethane-modified silicone with other reagents in a specific amount produces synergy to improve the anti-pilling, waterproof, softness, wear resistance and antistatic properties of the fabric. Acrylic groups, metal complexes and their metal elements are introduced to increase product stability, durability, antifouling, antibacterial and antistatic properties, and further improve the anti-pilling and waterproof properties of the fabric.

[0028] Among them, polyurethane-modified silicone is widely used in fabric preparation because it can synergistically improve the waterproofness, wear resistance and antistatic properties of fabrics. However, in long-term applications, phenomena such as insufficient waterproofness and antistatic properties will still occur, which will greatly reduce the service life of the product and cause pilling, seriously affecting the user's experience of the product.

[0029] In order to solve this problem, this solution introduces acrylic groups multiple times to increase the compatibility of the two and the cross-linking degree of the product, solve the problem of loose fabric tissue, and after acrylic modification, it can also improve the overall antibacterial, flexibility, and anti-fouling properties of the fabric, which can further enhance the user's experience of the fabric. Most importantly, the polyurethane prepolymer modified with acrylic acid has higher chemical stability and can resist the erosion of chemicals such as acids, alkalis, and solvents, solving the problem of insufficient stability of the fabric in long-term use, and further enhancing the durability, antistatic, and anti-pilling properties of the fabric.

[0030] Among them, in order to further enhance the antistatic performance, this solution uses copper elements and metal complexes to synergistically enhance the antistatic and water and oil repellent properties of the product, and further enhance the anti-pilling and waterproof properties of the fabric.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The proposal uses grey fabric woven on a Tsudakoma water-jet loom. The overall organizational structure shows a plain weave on the front and a floating weave on the back. This fabric not only exhibits the comfort of a four-sided stretch fabric, but also has skin-friendly functionality on the back. The overall texture of the fabric presents horizontal stripes. Through post-finishing technology, the finished product can improve pilling and meet customer requirements and consumer needs.

[0033] 2. The solution simplifies the process flow, improves production efficiency, and immerses the fabric in an antioxidant for finishing during the heat setting process. Under this condition, the elasticity of the fabric can be ensured, the slippage and entanglement of the fibers when subjected to external forces can be reduced, and the high-temperature yellowing of the grey fabric during heat setting can be avoided, thereby ensuring the quality of the finished fabric and improving the pilling of the finished fabric.

[0034] 3. In the scheme, polyurethane-modified silicone and other reagents are used to prepare a waterproofing agent solution in a specific ratio, and the synergistic effect between the components is utilized to significantly improve the anti-pilling, waterproof, softness, wear resistance and antistatic properties of the fabric. The introduction of acrylic groups, metal complexes and their metal elements further enhances the stability, durability, antifouling, antibacterial and antistatic properties of the fabric, thereby achieving a comprehensive improvement in the anti-pilling and waterproof properties of the fabric. DETAILED DESCRIPTION

[0035] 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 them. 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.

[0036] It should be noted that the following parts are by mass, and all raw material purchase manufacturers involved in the present invention are not subject to any special restrictions and are exemplified as follows: In the following examples, the code name of the hydrazine derivative preparation is D2522-3g / L; the CAS number of zinc-complexed glycerol is 16754-68-0.

[0037] Embodiment 1: A process for improving pilling of skin-friendly stretch fabrics, comprising the following steps:

[0038] Step 1: Preparation of antistatic agent: (1) Add 13 parts of octamethylcyclotetrasiloxane, 0.03 parts of tetraethylammonium hydroxide, and 1.5 parts of 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane to 45 parts of tetrahydrofuran, and react at 110°C for 5 hours to obtain modified siloxane; (2) Add 1.5 parts of methacrylic acid and 7.5 parts of modified siloxane to 35 parts of tetrahydrofuran, and react at 160°C for 4 hours, purify, and dry to obtain modified silicone oil; (3) Under nitrogen atmosphere, add 10.5 parts of isophorone Diisocyanate, 2.5 parts of zinc complex glycerol, and 0.2 parts of dibutyltin dilaurate are added to 55 parts of tetrahydrofuran, and reacted at 70°C for 1.5 hours, followed by adding 1.5 parts of ethylene glycol and reacting at 50°C for 1.5 hours to obtain intermediate A; 3.5 parts of hydroxyethyl methacrylate are added and reacted at 60°C for 2.5 hours to obtain a polyurethane prepolymer; (4) under a nitrogen atmosphere, the modified silicone oil and the polyurethane prepolymer are reacted at 50°C for 3 hours, the mass ratio of the modified silicone oil to the polyurethane prepolymer being 11:1, filtered and purified to obtain an antistatic agent;

[0039] Step 2: (1) Wrap nylon DTY 70D / 68F with 40D spandex and twist it at 300 T / m to obtain warp yarn; (2) Wrap nylon DTY 70D / 68F with 40D spandex and twist it at 300 T / m to obtain weft yarn a; use DTY 70D / 48F mesh-free yarn as weft yarn b; use weft yarn a and weft yarn b in a ratio of 2:1 as weft yarn; (3) Weft yarn and weft yarn are woven to obtain grey fabric, the width of the grey fabric is 140 cm, and the weight is 216 g / m 2 ; Warp density is 159T / inch, weft density is 146T / inch;

[0040] Step 3: After the grey cloth is joined, it is desized at 95°C at a speed of 35 m / min, and then immersed in a 2.5 g / L antioxidant solution at a speed of 18 m / min; then it is pre-shaped at a speed of 22 m / min at 190°C to obtain fabric A, and the width of fabric A is 1.5 cm wider than that of the grey cloth;

[0041] Step 4: After dyeing fabric A, immerse it in a waterproof finishing liquid with a 75% immersion rate, and shape the finished product under the conditions of 175° C., 8 overfeeds, and an air volume of 48% to obtain a skin-friendly stretch fabric.

[0042] In this technical solution, the waterproof finishing liquid includes the following raw materials: 50g / L waterproofing agent, 9g / L softening agent, 0.8g / L penetrant, 5g / L antistatic agent, 8g / L cross-linking agent, 8g / L anti-bending agent, 7g / L stiffening agent, and the solvent is deionized water.

[0043] The above-mentioned waterproofing agent is a silicone waterproofing agent, model ET-4328; the softening agent is a silicone softening agent, model TD; the penetrant is a non-ionic penetrant, model Goon1018; the cross-linking agent is a textile curing agent, model JB-5030; the anti-falling agent is a JF-503 anti-falling agent, model JF-503; the stiffening agent is an environmentally friendly stiffening agent, model Y-7011CZ.

[0044] Embodiment 2: A process for improving pilling of skin-friendly stretch fabrics, comprising the following steps:

[0045] Step 1: Preparation of antistatic agent: (1) Add 13 parts of octamethylcyclotetrasiloxane, 0.03 parts of tetraethylammonium hydroxide, and 1.5 parts of 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane to 45 parts of tetrahydrofuran, and react at 110°C for 5 hours to obtain modified siloxane; (2) Add 1.5 parts of methacrylic acid and 7.5 parts of modified siloxane to 35 parts of tetrahydrofuran, and react at 160°C for 4 hours, purify, and dry to obtain modified silicone oil; (3) Under nitrogen atmosphere, add 10.5 parts of isophorone Diisocyanate, 2.5 parts of zinc complex glycerol, and 0.2 parts of dibutyltin dilaurate are added to 55 parts of tetrahydrofuran, and reacted at 70°C for 1.5 hours, followed by adding 1.5 parts of ethylene glycol and reacting at 50°C for 1.5 hours to obtain intermediate A; 3.5 parts of hydroxyethyl methacrylate are added and reacted at 60°C for 2.5 hours to obtain a polyurethane prepolymer; (4) under a nitrogen atmosphere, the modified silicone oil and the polyurethane prepolymer are reacted at 50°C for 3 hours, the mass ratio of the modified silicone oil to the polyurethane prepolymer being 11:1, filtered and purified to obtain an antistatic agent;

[0046] Step 2: (1) Wrap nylon DTY 70D / 68F with 40D spandex and twist it at 300 T / m to obtain warp yarn; (2) Wrap nylon DTY 70D / 68F with 40D spandex and twist it at 300 T / m to obtain weft yarn a; use DTY 70D / 48F mesh-free yarn as weft yarn b; use weft yarn a and weft yarn b in a ratio of 2:1 as weft yarn; (3) Weft yarn and weft yarn are woven to obtain grey fabric, the width of the grey fabric is 140 cm, and the weight is 216 g / m 2 ; Warp density is 159T / inch, weft density is 146T / inch;

[0047] Step 3: After the grey cloth is joined, it is desized at 90°C at a speed of 30 m / min, and then immersed in a 2g / L antioxidant solution at a speed of 15 m / min; then it is pre-shaped at a speed of 20 m / min at 185°C to obtain fabric A, and the width of fabric A is 1 cm wider than that of the grey cloth;

[0048] Step 4: After dyeing fabric A, immerse it in a waterproof finishing liquid with a 70% immersion rate, and shape the finished product under the conditions of 170° C., 5 overfeeds, and an air volume of 45% to obtain a skin-friendly stretch fabric.

[0049] In this technical solution, the waterproof finishing liquid includes the following raw materials: 30g / L waterproofing agent, 8g / L softening agent, 0.5g / L penetrant, 4g / L antistatic agent, 7g / L cross-linking agent, 7g / L anti-bending agent, 6g / L stiffening agent, and the solvent is deionized water.

[0050] The above-mentioned waterproofing agent is a silicone waterproofing agent, model ET-4328; the softening agent is a silicone softening agent, model TD; the penetrant is a non-ionic penetrant, model Goon1018; the cross-linking agent is a textile curing agent, model JB-5030; the anti-falling agent is a JF-503 anti-falling agent, model JF-503; the stiffening agent is an environmentally friendly stiffening agent, model Y-7011CZ.

[0051] Embodiment 3: A process for improving pilling of skin-friendly stretch fabrics, comprising the following steps:

[0052] Step 1: Preparation of antistatic agent: (1) Add 13 parts of octamethylcyclotetrasiloxane, 0.03 parts of tetraethylammonium hydroxide, and 1.5 parts of 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane to 45 parts of tetrahydrofuran, and react at 110°C for 5 hours to obtain modified siloxane; (2) Add 1.5 parts of methacrylic acid and 7.5 parts of modified siloxane to 35 parts of tetrahydrofuran, and react at 160°C for 4 hours, purify, and dry to obtain modified silicone oil; (3) Under nitrogen atmosphere, add 10.5 parts of isophorone Diisocyanate, 2.5 parts of zinc complex glycerol, and 0.2 parts of dibutyltin dilaurate are added to 55 parts of tetrahydrofuran, and reacted at 70°C for 1.5 hours, followed by adding 1.5 parts of ethylene glycol and reacting at 50°C for 1.5 hours to obtain intermediate A; 3.5 parts of hydroxyethyl methacrylate are added and reacted at 60°C for 2.5 hours to obtain a polyurethane prepolymer; (4) under a nitrogen atmosphere, the modified silicone oil and the polyurethane prepolymer are reacted at 50°C for 3 hours, the mass ratio of the modified silicone oil to the polyurethane prepolymer being 11:1, filtered and purified to obtain an antistatic agent;

[0053] Step 2: (1) Wrap nylon DTY 70D / 68F with 40D spandex and twist it at 300 T / m to obtain warp yarn; (2) Wrap nylon DTY 70D / 68F with 40D spandex and twist it at 300 T / m to obtain weft yarn a; use DTY 70D / 48F mesh-free yarn as weft yarn b; use weft yarn a and weft yarn b in a ratio of 2:1 as weft yarn; (3) Weft yarn and weft yarn are woven to obtain grey fabric, the width of the grey fabric is 140 cm, and the weight is 216 g / m 2; Warp density is 159T / inch, weft density is 146T / inch;

[0054] Step 3: After the grey fabrics are joined, they are desized at 100°C at a speed of 40 m / min, and then immersed in a 3 g / L antioxidant solution at a speed of 20 m / min; then they are pre-shaped at a speed of 25 m / min at 195°C to obtain fabric A, and the width of fabric A is 2 cm wider than that of the grey fabric;

[0055] Step 4: After dyeing fabric A, immerse it in a waterproof finishing liquid with a immersion rate of 80%. The finished product is shaped under the conditions of 180° C., 10 overfeeds, and an air volume of 50% to obtain a skin-friendly stretch fabric.

[0056] In this technical solution, the waterproof finishing liquid includes the following raw materials: 70g / L waterproofing agent, 10g / L softening agent, 1g / L penetrant, 6g / L antistatic agent, 9g / L cross-linking agent, 9g / L anti-bending agent, 8g / L stiffening agent, and the solvent is deionized water.

[0057] The above-mentioned waterproofing agent is a silicone waterproofing agent, model ET-4328; the softening agent is a silicone softening agent, model TD; the penetrant is a non-ionic penetrant, model Goon1018; the cross-linking agent is a textile curing agent, model JB-5030; the anti-falling agent is a JF-503 anti-falling agent, model JF-503; the stiffening agent is an environmentally friendly stiffening agent, model Y-7011CZ.

[0058] Embodiment 4: A process for improving pilling of skin-friendly stretch fabrics, comprising the following steps:

[0059] Step 1: Preparation of antistatic agent: (1) Add 13 parts of octamethylcyclotetrasiloxane, 0.03 parts of tetraethylammonium hydroxide, and 1.5 parts of 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane to 45 parts of tetrahydrofuran, and react at 110°C for 5 hours to obtain modified siloxane; (2) Add 1.5 parts of methacrylic acid and 7.5 parts of modified siloxane to 35 parts of tetrahydrofuran, and react at 160°C for 4 hours, purify, and dry to obtain modified silicone oil; (3) Under nitrogen atmosphere, add 10.5 parts of isophorone Diisocyanate, 2.5 parts of zinc complex glycerol, and 0.2 parts of dibutyltin dilaurate are added to 55 parts of tetrahydrofuran, and reacted at 70°C for 1.5 hours, followed by adding 1.5 parts of ethylene glycol and reacting at 50°C for 1.5 hours to obtain intermediate A; 3.5 parts of hydroxyethyl methacrylate are added and reacted at 60°C for 2.5 hours to obtain a polyurethane prepolymer; (4) under a nitrogen atmosphere, the modified silicone oil and the polyurethane prepolymer are reacted at 50°C for 3 hours, the mass ratio of the modified silicone oil to the polyurethane prepolymer being 11:1, filtered and purified to obtain an antistatic agent;

[0060] Step 2: (1) Wrap nylon DTY 70D / 68F with 40D spandex and twist it at 300 T / m to obtain warp yarn; (2) Wrap nylon DTY 70D / 68F with 40D spandex and twist it at 300 T / m to obtain weft yarn a; use DTY 70D / 48F mesh-free yarn as weft yarn b; use weft yarn a and weft yarn b in a ratio of 2:1 as weft yarn; (3) Weft yarn and weft yarn are woven to obtain grey fabric, the width of the grey fabric is 140 cm, and the weight is 216 g / m 2 ; Warp density is 159T / inch, weft density is 146T / inch;

[0061] Step 3: After the grey cloth is joined, it is desized at 95°C at a speed of 35 m / min, and then immersed in a 2.5 g / L antioxidant solution at a speed of 18 m / min; then it is pre-shaped at a speed of 22 m / min at 190°C to obtain fabric A, and the width of fabric A is 1.5 cm wider than that of the grey cloth;

[0062] Step 4: After dyeing fabric A, immerse it in a waterproof finishing liquid with a 75% immersion rate, and shape the finished product under the conditions of 175° C., 8 overfeeds, and an air volume of 48% to obtain a skin-friendly stretch fabric.

[0063] In this technical solution, the waterproof finishing liquid includes the following raw materials: 50g / L waterproofing agent, 20g / L softening agent, 6g / L finishing agent, 5g / L antistatic agent, 0.8g / L penetrant, and the solvent is deionized water.

[0064] The above-mentioned waterproofing agent is a fluorine-based waterproof and oil-proofing agent, model TG-410HN; the softening agent is a silicone softener, model TD; the finishing agent is a quaternary ammonium salt formaldehyde-free fixing agent, model Yinfang No. 3; the penetrating agent is a non-ionic penetrating agent, model Goon1018.

[0065] Comparative Example 1: Based on Example 1, a skin-friendly stretch fabric is prepared using the existing process, and the other processes remain unchanged, specifically:

[0066] Step 1: Preparation of antistatic agent: (1) Add 13 parts of octamethylcyclotetrasiloxane, 0.03 parts of tetraethylammonium hydroxide, and 1.5 parts of 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane to 45 parts of tetrahydrofuran, and react at 110°C for 5 hours to obtain modified siloxane; (2) Add 1.5 parts of methacrylic acid and 7.5 parts of modified siloxane to 35 parts of tetrahydrofuran, and react at 160°C for 4 hours, purify, and dry to obtain modified silicone oil; (3) Under nitrogen atmosphere, add 10.5 parts of isophorone Diisocyanate, 2.5 parts of zinc complex glycerol, and 0.2 parts of dibutyltin dilaurate are added to 55 parts of tetrahydrofuran, and reacted at 70°C for 1.5 hours, followed by adding 1.5 parts of ethylene glycol and reacting at 50°C for 1.5 hours to obtain intermediate A; 3.5 parts of hydroxyethyl methacrylate are added and reacted at 60°C for 2.5 hours to obtain a polyurethane prepolymer; (4) under a nitrogen atmosphere, the modified silicone oil and the polyurethane prepolymer are reacted at 50°C for 3 hours, the mass ratio of the modified silicone oil to the polyurethane prepolymer being 11:1, filtered and purified to obtain an antistatic agent;

[0067] Step 2: (1) Wrap nylon DTY 70D / 68F with 40D spandex and twist it at 300 T / m to obtain warp yarn; (2) Wrap nylon DTY 70D / 68F with 40D spandex and twist it at 300 T / m to obtain weft yarn a; use DTY 70D / 48F mesh-free yarn as weft yarn b; use weft yarn a and weft yarn b in a ratio of 2:1 as weft yarn; (3) Weft yarn and weft yarn are woven to obtain grey fabric, the width of the grey fabric is 140 cm, and the weight is 216 g / m 2 ; Warp density is 159T / inch, weft density is 146T / inch;

[0068] Step 3: After the grey fabric is joined, it is desized at 95°C at a speed of 35 m / min, then re-refined at 55°C, WCD dried at 85°C, and then pre-shaped at 180°C at a speed of 22 m / min to obtain fabric A. The width of fabric A is 1.5 cm wider than that of the grey fabric;

[0069] Step 4: After dyeing fabric A, immerse it in a waterproof finishing liquid with a 75% immersion rate, and shape the finished product under the conditions of 175° C., 8 overfeeds, and an air volume of 48% to obtain a skin-friendly stretch fabric.

[0070] In this technical solution, the waterproof finishing liquid includes the following raw materials: 50g / L waterproofing agent, 9g / L softening agent, 0.8g / L penetrant, 5g / L antistatic agent, 8g / L cross-linking agent, 8g / L anti-bending agent, 7g / L stiffening agent, and the solvent is deionized water.

[0071] The above-mentioned waterproofing agent is a silicone waterproofing agent, model ET-4328; the softening agent is a silicone softening agent, model TD; the penetrant is a non-ionic penetrant, model Goon1018; the cross-linking agent is a textile curing agent, model JB-5030; the anti-falling agent is a JF-503 anti-falling agent, model JF-503; the stiffening agent is an environmentally friendly stiffening agent, model Y-7011CZ.

[0072] Comparative Example 2: Based on Example 1, no metal complex is introduced in the preparation process of the antistatic agent, and the other processes remain unchanged, specifically:

[0073] Step 1: Preparation of antistatic agent: (1) Add 13 parts of octamethylcyclotetrasiloxane, 0.03 parts of tetraethylammonium hydroxide, and 1.5 parts of 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane to 45 parts of tetrahydrofuran, and react at 110°C for 5 hours to obtain modified siloxane; (2) Add 1.5 parts of methacrylic acid and 7.5 parts of modified siloxane to 35 parts of tetrahydrofuran, and react at 160°C for 4 hours, purify, and dry to obtain modified silicone oil; (3) Under nitrogen atmosphere, add 10.5 parts of isoflurane; (4) adding 1.5 parts of hydroxyethyl methacrylate to 50°C for 2.5 hours to obtain a polyurethane prepolymer; (5) reacting the modified silicone oil and the polyurethane prepolymer at 50°C for 3 hours under a nitrogen atmosphere; the mass ratio of the modified silicone oil to the polyurethane prepolymer is 11:1; filtering and purifying to obtain an antistatic agent;

[0074] Step 2: (1) Wrap nylon DTY 70D / 68F with 40D spandex and twist it at 300 T / m to obtain warp yarn; (2) Wrap nylon DTY 70D / 68F with 40D spandex and twist it at 300 T / m to obtain weft yarn a; use DTY 70D / 48F mesh-free yarn as weft yarn b; use weft yarn a and weft yarn b in a ratio of 2:1 as weft yarn; (3) Weft yarn and weft yarn are woven to obtain grey fabric, the width of the grey fabric is 140 cm, and the weight is 216 g / m 2 ; Warp density is 159T / inch, weft density is 146T / inch;

[0075] Step 3: After the grey cloth is joined, it is desized at 95°C at a speed of 35 m / min, and then immersed in a 2.5 g / L antioxidant solution at a speed of 18 m / min; then it is pre-shaped at a speed of 22 m / min at 190°C to obtain fabric A, and the width of fabric A is 1.5 cm wider than that of the grey cloth;

[0076] Step 4: After dyeing fabric A, immerse it in a waterproof finishing liquid with a 75% immersion rate, and shape the finished product under the conditions of 175° C., 8 overfeeds, and an air volume of 48% to obtain a skin-friendly stretch fabric.

[0077] In this technical solution, the waterproof finishing liquid includes the following raw materials: 50g / L waterproofing agent, 9g / L softening agent, 0.8g / L penetrant, 5g / L antistatic agent, 8g / L cross-linking agent, 8g / L anti-bending agent, 7g / L stiffening agent, and the solvent is deionized water.

[0078] The above-mentioned waterproofing agent is a silicone waterproofing agent, model ET-4328; the softening agent is a silicone softening agent, model TD; the penetrant is a non-ionic penetrant, model Goon1018; the cross-linking agent is a textile curing agent, model JB-5030; the anti-falling agent is a JF-503 anti-falling agent, model JF-503; the stiffening agent is an environmentally friendly stiffening agent, model Y-7011CZ.

[0079] Comparative Example 3: Based on Example 1, acrylic acid is not added during the preparation of the antistatic agent, and the other processes remain unchanged, specifically:

[0080] Step 1: Preparation of antistatic agent: (1) Add 13 parts of octamethylcyclotetrasiloxane, 0.03 parts of tetraethylammonium hydroxide, and 1.5 parts of 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane to 45 parts of tetrahydrofuran, react at 110°C for 5 hours, purify and dry to obtain modified silicone oil; (2) Under nitrogen atmosphere, add 8.5 parts of isophorone diisocyanate, 2.5 parts of zinc complex glycerol, and 0.2 parts of dibutyltin dilaurate to 55 parts of tetrahydrofuran, react at 70°C for 1.5 hours, then add 1.5 parts of ethylene glycol and react at 50°C for 1.5 hours to obtain polyurethane prepolymer; (3) Under nitrogen atmosphere, react modified silicone oil and polyurethane prepolymer at 50°C for 3 hours, the mass ratio of modified silicone oil to polyurethane prepolymer is 11:1, filter and purify to obtain antistatic agent;

[0081] Step 2: (1) Wrap nylon DTY 70D / 68F with 40D spandex and twist it at 300 T / m to obtain warp yarn; (2) Wrap nylon DTY 70D / 68F with 40D spandex and twist it at 300 T / m to obtain weft yarn a; use DTY 70D / 48F mesh-free yarn as weft yarn b; use weft yarn a and weft yarn b in a ratio of 2:1 as weft yarn; (3) Weft yarn and weft yarn are woven to obtain grey fabric, the width of the grey fabric is 140 cm, and the weight is 216 g / m 2 ; Warp density is 159T / inch, weft density is 146T / inch;

[0082] Step 3: After the grey cloth is joined, it is desized at 95°C at a speed of 35 m / min, and then immersed in a 2.5 g / L antioxidant solution at a speed of 18 m / min; then it is pre-shaped at a speed of 22 m / min at 190°C to obtain fabric A, and the width of fabric A is 1.5 cm wider than that of the grey cloth;

[0083] Step 4: After dyeing fabric A, immerse it in a waterproof finishing liquid with a 75% immersion rate, and shape the finished product under the conditions of 175° C., 8 overfeeds, and an air volume of 48% to obtain a skin-friendly stretch fabric.

[0084] In this technical solution, the waterproof finishing liquid includes the following raw materials: 50g / L waterproofing agent, 9g / L softening agent, 0.8g / L penetrant, 5g / L antistatic agent, 8g / L cross-linking agent, 8g / L anti-bending agent, 7g / L stiffening agent, and the solvent is deionized water.

[0085] The above-mentioned waterproofing agent is a silicone waterproofing agent, model ET-4328; the softening agent is a silicone softening agent, model TD; the penetrant is a non-ionic penetrant, model Goon1018; the cross-linking agent is a textile curing agent, model JB-5030; the anti-falling agent is a JF-503 anti-falling agent, model JF-503; the stiffening agent is an environmentally friendly stiffening agent, model Y-7011CZ.

[0086] Comparative Example 4: Based on Example 1, the antistatic agent is purchased from the existing source, and the other processes remain unchanged, specifically:

[0087] Step 1: (1) Wrap nylon DTY 70D / 68F with 40D spandex and twist it at 300 T / m to obtain warp yarn; (2) Wrap nylon DTY 70D / 68F with 40D spandex and twist it at 300 T / m to obtain weft yarn a; use DTY 70D / 48F mesh-free yarn as weft yarn b; use weft yarn a and weft yarn b in a ratio of 2:1 as weft yarn; (3) Weft yarn and weft yarn are woven to obtain grey fabric, the width of the grey fabric is 140 cm, and the weight is 216 g / m 2 ; Warp density is 159T / inch, weft density is 146T / inch;

[0088] Step 2: After the grey cloth is joined, it is desized at 95°C at a speed of 35 m / min, and then immersed in a 2.5 g / L antioxidant solution at a speed of 18 m / min; then it is pre-shaped at a speed of 22 m / min at 190°C to obtain fabric A, and the width of fabric A is 1.5 cm wider than that of the grey cloth;

[0089] Step 3: After dyeing fabric A, immerse it in a waterproof finishing liquid with a 75% immersion rate, and shape the finished product under the conditions of 175° C., 8 overfeeds, and an air volume of 48% to obtain a skin-friendly stretch fabric.

[0090] In this technical solution, the waterproof finishing liquid includes the following raw materials: 50g / L waterproofing agent, 9g / L softening agent, 0.8g / L penetrant, 5g / L antistatic agent, 8g / L cross-linking agent, 8g / L anti-bending agent, 7g / L stiffening agent, and the solvent is deionized water.

[0091] The above-mentioned waterproofing agent is a silicone waterproofing agent, model ET-4328; the softening agent is a silicone softening agent, model TD; the penetrant is a non-ionic penetrant, model Goon1018; the cross-linking agent is a textile curing agent, model JB-5030; the anti-falling agent is a JF-503 anti-falling agent, model JF-503; the antistatic agent is a colorless antistatic agent, model JL-WTA; the stiffening agent is an environmentally friendly stiffening agent, model Y-7011CZ.

[0092] Test 1: The skin-friendly stretch fabric prepared in Examples 1 and 4 was subjected to basic performance tests: (1) Anti-pilling rating test A: Using the circular trajectory A method of GB / T4802.1-2008, the pressure was 590 cN, the fuzzing was 150 times, and the pilling was 150 times, and the pilling was tested and rated; (2) Anti-pilling rating test B: Using the modified Martindale method of GB / T4802.2-2008, wool abrasive, The load mass is 415±2g, the friction number is 2500 revolutions, and the pilling is tested and rated; (3) Anti-pilling rating test C: GB / T4802.1-2008 circular trajectory A method is added, the pressure is 590cN, the pilling is 300 times, the pilling is 300 times, and the pilling is tested and rated; (4) Anti-pilling rating test D: After the above experiments are completed, all wash tests are added to test and rate the pilling;

[0093] Result analysis: In experiment A, the pressure was 590 cN, the fuzzing was 150 times, and the pilling was 150 times. The pilling test results of Example 1 and Example 4, in which the fluorine-free and fluorine-containing waterproofing agents were added, were all at level 4 or above.

[0094] In experiment B, wool abrasive was used, the load mass was 415±2g, the friction number was 2500 revolutions, and the pilling test results of Example 1 and Example 4 with fluorine-free and fluorine-containing water-repellent added were both at level 4 or above;

[0095] In experiment C, the pressure was 590 cN, the pilling was 300 times, and the pilling was 300 times. The pilling test results of Example 1 and Example 4 with the addition of fluorine-free and fluorine-containing water-repellents were all at level 4 or above.

[0096] In Experiment D, after Experiment C, all post-washing tests were added. The pilling test results of Example 1 and Example 4, which were added with fluorine-free and fluorine-containing waterproofing agents respectively, were 3.5 or above, and the fitting results were qualified.

[0097] Test experiment 2: The skin-friendly stretch fabric prepared in Example 1 and Comparative Examples 1 to 4 was subjected to basic performance tests: (1) Antistatic performance test: The skin-friendly stretch fabric prepared in Example 1 and Comparative Examples 1 to 4 was tested for antistatic performance with an ohmmeter before and after the friction number was 2500 revolutions. The test was performed again after one year of use. The results are shown in Table 1;

[0098]

[0099] Table 1

[0100] Result analysis: According to the data analysis in Table 1, it can be seen that the introduction of metal complexes in the scheme effectively improves the antistatic performance, and the repeated introduction of acrylic acid can effectively improve the durability of the antistatic performance and achieve an improvement in the overall performance of the product.

[0101] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A process for improving pilling of skin-friendly stretch fabrics, characterized in that: The following steps are involved: Step 1: (1) nylon DTY 70D / 68F is wrapped with 40D spandex and twisted by 280-320 T / m to obtain warp yarn; (2) nylon DTY 70D / 68F is wrapped with 40D spandex and twisted by 280-320 T / m to obtain weft yarn a; DTY 70D / 48F mesh-free yarn is used as weft yarn b; weft yarn a and weft yarn b are used as weft yarn in a ratio of 1.5-2.5:1; (3) the warp yarn and the weft yarn are woven to obtain grey cloth; Step 2: After the grey fabric is joined, desizing and pre-forming are performed in sequence to obtain fabric A; Step 3: After dyeing fabric A, place it in a waterproof finishing liquid for padding and finalizing the finished product to obtain a skin-friendly stretch fabric.

2. A process for improving pilling of skin-friendly stretch fabric according to claim 1, characterized in that: In step 1, the width of the grey cloth is 140±5cm and the weight is 206-226g / m 2 ; The warp density is 158~160T / inch, and the weft density is 145~148T / inch.

3. The process for improving pilling of skin-friendly stretch fabric according to claim 1, characterized in that: In step 2, in the desizing process, the temperature is 90-100° C. and the speed is 30-40 m / min; in the pre-setting process, the pre-setting is firstly performed at a speed of 15-20 m / min in a 2-3 g / L antioxidant solution; and then at a speed of 20-25 m / min, the pre-setting is performed at 185-195° C.; The output width of the fabric A is 1 to 2 cm wider than that of the grey fabric.

4. The process for improving pilling of skin-friendly stretch fabric according to claim 1, characterized in that: In step 3, the process parameters for finalizing the finished product are as follows: temperature of 170-180° C., 5-10 overfeeds, air volume of 45-50%; and the rolling rate of the rolling is 70-80%.

5. The process for improving pilling of skin-friendly stretch fabric according to claim 1, characterized in that: The waterproof finishing liquid comprises the following raw materials: 30-70 g / L of waterproofing agent, 15-25 g / L of softening agent, 5-7 g / L of finishing agent, 4-6 g / L of antistatic agent, 0.5-1 g / L of penetrant, and the solvent is deionized water.

6. The process for improving pilling of skin-friendly stretch fabric according to claim 1, characterized in that: The waterproof finishing liquid comprises the following raw materials: 30-70 g / L of waterproofing agent, 8-10 g / L of softening agent, 0.5-1 g / L of penetrant, 4-6 g / L of antistatic agent, 7-9 g / L of cross-linking agent, 7-9 g / L of anti-bumping agent, 6-8 g / L of stiffening agent, and the solvent is deionized water.

7. The process for improving pilling of skin-friendly stretch fabric according to claim 5, characterized in that: The waterproofing agent includes a fluorine-based water- and oil-proofing agent or an organic silicon waterproofing agent; the softening agent is an organic silicon softening agent; and the penetrating agent is a non-ionic penetrating agent.

8. The process for improving pilling of skin-friendly stretch fabric according to claim 5, characterized in that: The specific preparation process of the antistatic agent is as follows: Step 1: (1) adding octamethylcyclotetrasiloxane, tetraethylammonium hydroxide and 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane to tetrahydrofuran, reacting at 100-120° C. for 4-6 hours to obtain modified siloxane; (2) adding methacrylic acid and modified siloxane to tetrahydrofuran, reacting at 150-165° C. for 3-5 hours, purifying and drying to obtain modified silicone oil; Step 2: under a nitrogen atmosphere, adding isophorone diisocyanate, zinc complex glycerol, and dibutyltin dilaurate to tetrahydrofuran, reacting at 60-80° C. for 1-2 hours, then adding ethylene glycol and reacting at 40-60° C. for 1-2 hours to obtain intermediate A; adding hydroxyethyl methacrylate and reacting at 50-70° C. for 2-3 hours to obtain a polyurethane prepolymer; Step 3: Under a nitrogen atmosphere, react the modified silicone oil and the polyurethane prepolymer at 40-60° C. for 2-4 hours, filter and purify to obtain an antistatic agent.

9. A process for improving pilling of skin-friendly stretch fabric according to claim 8, characterized in that: The modified siloxane comprises the following components: by mass, 12 to 14 parts of octamethylcyclotetrasiloxane, 0.02 to 0.04 parts of tetraethylammonium hydroxide, 1 to 2 parts of 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane, and 40 to 50 parts of tetrahydrofuran; The modified silicone oil comprises the following components: 1 to 2 parts of methacrylic acid, 6 to 9 parts of modified siloxane, and 30 to 40 parts of tetrahydrofuran, by mass. The polyurethane prepolymer comprises the following components: by weight, 9 to 12 parts of isophorone diisocyanate, 2 to 3 parts of zinc complex glycerol, 0.1 to 0.3 parts of dibutyltin dilaurate, 50 to 60 parts of tetrahydrofuran, 1 to 2 parts of ethylene glycol, and 3 to 4 parts of hydroxyethyl methacrylate; The raw materials of the antistatic agent include modified silicone oil and polyurethane prepolymer in a mass ratio of 10 to 12:1.

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