Nickel conductive pearl point four-way stretch fabric and processing technology thereof

Abstract

The invention belongs to the technical field of fabrics, and provides a nylon conductive pearl point four-way stretch fabric and a processing technology thereof.The processing technology comprises the following steps that S1, raw material pretreatment is conducted, specifically, white conductive filaments serve as raw materials, after plasma treatment, the white conductive filaments are modified with a silane coupling agent, and surface modified conductive fibers are obtained; s2, yarn preparation, wherein the surface modified conductive fibers, chinlon and spandex serve as raw materials, and various kinds of yarn are prepared through a twisting machine; s3, warping, drawing and drafting and reed-making are carried out; s4, weaving; s5, carrying out preshrinking treatment and pre-shaping; s6, desizing and dyeing; and S7, softening and shaping to obtain the nylon conductive pearl point four-way stretch fabric. According to the fabric, efficient combination of the conductive fibers and the chinlon / spandex is achieved through the plasma activation and silane coupling agent modification technology, the four-side elastic comfort is kept, meanwhile, lasting and stable conductive performance and durability are achieved, and the comprehensive performance of the functional fabric is remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of fabric technology, specifically relating to a nylon conductive pearl dot four-way stretch fabric and its processing technology. Background Technology

[0002] The development of functional textile fabrics is an important direction for technological upgrading in the textile industry. Among them, fabrics with both elasticity and conductivity are in high demand in fields such as special protective clothing, medical textiles, and the electronics industry. These fabrics typically use nylon and spandex as the base materials. Nylon provides excellent abrasion resistance and strength, while spandex gives the fabric high resilience and wearing comfort. However, ordinary nylon-spandex fabrics themselves are not conductive and are prone to static electricity accumulation during use. This can lead to dust accumulation, discomfort, and even the risk of electrostatic discharge in sensitive environments, affecting the precision of electronic equipment or causing safety accidents.

[0003] To impart conductivity to fabrics, existing technologies primarily employ two approaches: one is to incorporate metal-based conductive fibers, such as stainless steel fibers, silver-plated fibers, or carbon fibers, during the spinning or weaving stage; the other is to apply conductive coatings, such as conductive polymers like polypyrrole and polyaniline, during the fabric finishing stage. While these methods can improve fabric conductivity to some extent, they have significant limitations. Metal-based conductive fibers differ considerably in physical properties from nylon and spandex, leading to fiber breakage or detachment during weaving and daily use due to repeated stretching, resulting in poor conductivity durability. Furthermore, the stiff feel of metal fibers affects the fabric's softness and drape, reducing wearing comfort. Conductive coating methods often face problems such as weak adhesion between the coating and fibers, poor resistance to washing and abrasion, and significant degradation of conductivity after repeated washing. Additionally, the coating can clog fabric pores, affecting breathability and elastic recovery.

[0004] Furthermore, the processing technology of existing conductive fabrics is complex, often involving multiple coating steps, high-temperature heat treatment, or composite processes. This not only results in high production costs but also makes process control difficult, easily leading to quality problems such as uneven conductivity, excessive fabric shrinkage, or insufficient color fastness. Particularly when conductive fibers are introduced into the yarn through twisting or wrapping, ensuring the conductive component is evenly distributed and continuous during subsequent warping and weaving processes, forming a stable bond with the base fibers, while maintaining the overall dimensional stability and performance of the fabric, remains a challenge that existing technologies have not effectively addressed. Therefore, there is an urgent need in this field for a new technical solution that, through optimizing raw material composition, innovating process parameters, and developing preparation methods, achieves durable and stable conductive functionality while maintaining the high elasticity and comfort of nylon fabrics.

[0005] Therefore, it is necessary to design a four-way stretch fabric with conductive pearl dots. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies, a four-way stretch fabric with conductive pearl dots and its processing technology is provided.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A processing technology for a nylon conductive pearl dot four-way stretch fabric includes the following steps: S1. Raw material pretreatment: White conductive wire is used as raw material. After plasma treatment, it is modified with silane coupling agent to obtain surface-modified conductive fiber. S2. Yarn preparation: Using surface-modified conductive fibers, nylon and spandex as raw materials, various yarns are prepared by twisting machine; wherein, the first warp and the first weft are made by twisting nylon and spandex, the second warp is made by twisting nylon and surface-modified conductive fibers, the second weft is nylon, and the third weft is made by twisting nylon and surface-modified conductive fibers. S3. Warping, warping and heddle threading: Using the first and second warp yarns as raw materials, warping is performed according to a total of 9240 warp yarns, with the warping length being 105-115% of the length of the greige fabric; the multiple warped heads are combined into one head by a warping machine; the combined head is then threaded and heddled. S4. Weaving: Using the warp yarns prepared in step S3 and the first weft yarn, second weft yarn, and third weft yarn prepared in step S2 as raw materials, weaving is carried out on a water jet loom to obtain the grey fabric. S5. Pre-shrinking treatment and pre-forming: The greige fabric is pre-shrinked using a desizing working solution; the pre-shrinked greige fabric is then pre-formed. S6. Desizing and dyeing: The pre-shaped fabric is desized in a dyeing vat; the desized fabric is then dyed using an overflow dyeing machine. S7. Softening and Shaping: The fabric dyed in step S6 is softened and shaped by applying a setting liquid through padding to obtain a four-way stretch fabric with conductive pearl dots.

[0008] Preferably, the specific steps of the raw material pretreatment are as follows: first, the white conductive wire is placed in a plasma treatment device and surface activated under an argon atmosphere. The plasma power is 500-1000 watts and the treatment time is 5-15 minutes. Then, the activated white conductive wire is immersed in a silane coupling agent solution with a mass concentration of 1-5% and reacted at 50-80°C for 10-30 minutes. After being removed and dried, surface-modified conductive fiber is obtained.

[0009] Preferably, the white conductive filament has a fineness of 15-25 denier and a volume resistivity of less than 1.0 × 10⁻⁶. 3 Ω·cm; Preferably, the silane coupling agent is an aminosilane coupling agent, and the aminosilane coupling agent is γ-aminopropyltriethoxysilane.

[0010] Preferably, the mass ratio of nylon to spandex in the first warp and first weft yarns is 85:15 to 90:10; the mass ratio of nylon to surface-modified conductive fiber in the second warp yarn is 95:5 to 97:3; and the mass ratio of nylon to surface-modified conductive fiber in the third weft yarn is 95:5 to 97:3.

[0011] Preferably, the nylon has a fineness of 70-150 denier and a single filament count of 48-136; the spandex has a fineness of 20-40 denier.

[0012] Preferably, the tension applied when the surface-modified conductive fiber is twisted with nylon is 10-20 Newtons.

[0013] Preferably, in the process of threading and beating the reed, the threading is carried out in a 1, 2, 3, 4, 5, 6 sequential threading manner, the beating density is 20-22 teeth / cm, and 2 warp yarns are threaded into each reed.

[0014] Preferably, in the pre-shrinking process, the fabric traveling speed is controlled at 20-30 meters per minute, and the rolling mill pressure is maintained at 2-3 kilograms; The pre-shrinking treatment is carried out at a temperature of 85-95℃; the desizing working solution includes: sodium hydroxide 50-70 g / L, desizing agent 15-25 g / L, refining emulsifier 15-25 g / L, and penetrant 3-7 g / L.

[0015] Preferably, the pre-shrinked fabric is pre-formed in a hot air tenter frame under the following conditions: temperature 180-200℃, speed 20-30 m / min, and overfeed rate 3-5%. The desizing solution for the desizing treatment contains 30-50 g / L sodium hydroxide, 10-15 g / L desizing agent, 8-12 g / L refining emulsifier, and 3-7 g / L penetrant; the desizing temperature for the desizing treatment is 90-100℃, and the time is 25-35 minutes. The dyeing solution contains 0.2-0.4 wt% Acid Yellow, 1.5-2.5 wt% Acid Black, 3-5 g / L pH buffer, and 2-4 g / L leveling agent; After the dyeing is completed, a soaping and color-fixing treatment is performed. The soaping solution contains 2-4 g / L of soaping agent, the treatment temperature is 70-80℃, and the treatment time is 15-25 minutes.

[0016] Preferably, in the softening and setting process, the setting liquid contains 35-45 g / L of waterproofing agent, 15-25 g / L of waterproofing auxiliary agent, 8-12 g / L of crosslinking agent, and 3-7 g / L of penetrant, and the softening and setting is carried out at 160-180°C; During the soft shaping process, the machine speed is 25-35 meters per minute, the air volume is 1400-1600 cubic feet per minute, and the overfeed rate is 6-10%.

[0017] The present invention also provides a nylon conductive pearl dot four-way stretch fabric, which is obtained by the processing technology of the aforementioned nylon conductive pearl dot four-way stretch fabric.

[0018] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows: This invention significantly improves the interfacial bonding between conductive fibers and nylon / spandex matrix by treating white conductive fibers with plasma and then modifying them with a silane coupling agent. The plasma treatment introduces active groups onto the surface of the conductive fibers, while the silane coupling agent, through its unique bifunctional structure, binds to the conductive fiber surface at one end and forms a strong connection with the nylon macromolecular chain at the other end. This structure effectively improves the dispersibility and bonding strength of the conductive fibers in the yarn system.

[0019] The yarn structure design employed in this invention enables surface-modified conductive fibers to form a stable three-dimensional conductive network within the fabric. By distributing the conductive fibers in different yarns along the warp and weft directions and controlling their distribution density, multidirectional conductive pathways are achieved. This structure ensures both the uniformity of conductivity in the fabric and avoids negatively impacting its mechanical properties and comfort due to excessive concentration of conductive fibers.

[0020] The processing technology of this invention effectively solves the problem of dimensional instability that easily occurs in the processing of conductive fabrics by organically combining pre-shrinking treatment, pre-forming, and desizing. Pre-shrinking treatment allows the fibers to shrink sufficiently, pre-forming gives the fabric initial morphological stability, and desizing removes impurities while maintaining the fabric size. The synergistic effect of these three processes ensures that the final fabric has excellent dimensional stability and smooth appearance.

[0021] This invention employs a dyeing process that first penetrates at low temperatures and then fixes at high temperatures, followed by a soaping and color-fixing treatment. This allows the fabric to achieve good color fastness while maintaining conductivity and elastic recovery. This gentle yet effective treatment method is particularly suitable for conductive and elastic fabrics that are sensitive to processing conditions.

[0022] The fabric of this invention achieves efficient bonding between conductive fibers and nylon / spandex through plasma activation and silane coupling agent modification technology. While retaining the comfort of four-way stretch, it imparts long-lasting and stable conductivity and durability, significantly improving the overall performance of functional fabrics. Detailed Implementation

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In specific embodiments of the present invention, the sources of various main raw materials are briefly described as follows: γ-aminopropyltriethoxysilane: Nanjing Herun Coupling Agent Co., Ltd., CAS No.: 919-30-2; Sodium hydroxide: Xinjiang Zhongtai Chemical Co., Ltd., CAS No.: 1310-73-2; Desizing agent: Guangzhou Runqi Textile Printing and Dyeing Raw Materials Co., Ltd., Model: BS-80; Refining emulsifier: Nanjing Qixia Mountain Printing and Dyeing Auxiliaries Factory, Model: Acidic Leveling Agent CSP-812; Penetrant: Zhejiang Chuanhua Chemical Group, Model: Penetrant TF-JFC; Acid Yellow dye and Acid Black dye: Zhejiang Longsheng Group Co., Ltd.; pH buffer: Zhejiang Transfar Chemical Group, Model: TF-620 series; Leveling agent: Zhejiang Chuanhua Chemical Group, model: TF-212 series; Soap detergent: Zhejiang Chuanhua Chemical Group, model: TF-153 series; Waterproofing agent: Zhejiang Chuanhua Chemical Group, fluorine-free waterproofing agent TF-501GS; Waterproofing agent: Zhejiang Transfar Chemical Group, model TranSoft TF-4900; Crosslinking agent: Foshan Fangrun Tiancheng Technology Co., Ltd., model LA-50M.

[0025] The present invention will be described in detail below through examples and comparative examples, but the scope of protection of the present invention is not limited to these examples. Unless otherwise specified, the chemical reagents and raw materials used in the following examples and comparative examples are all conventional commercially available products.

[0026] Example 1: This embodiment provides a processing technology for a four-way stretch fabric with conductive pearl dots, including the following steps: S1. Raw material pretreatment: White conductive wire is used as raw material. The fineness of the white conductive wire is 25 denier, and the volume resistivity is less than 1.0×10⁻⁶. 3Ω·cm; First, the white conductive wire is placed in a plasma treatment device and surface activated under an argon atmosphere. The plasma power is 1000 watts and the treatment time is 10 minutes. Then, the activated white conductive wire is immersed in a 3% silane coupling agent solution and reacted at 65°C for 20 minutes. After removal and drying, surface-modified conductive fiber is obtained. The silane coupling agent is an aminosilane coupling agent, specifically γ-aminopropyltriethoxysilane. S2. Yarn Preparation: Using surface-modified conductive fibers, nylon, and spandex as raw materials, various yarns are prepared by a twisting machine: the first warp and first weft yarns are made by twisting nylon and spandex; the second warp yarn is made by twisting nylon and surface-modified conductive fibers; the second weft yarn is nylon; and the third weft yarn is made by twisting nylon and surface-modified conductive fibers. The mass ratio of nylon to spandex in the first warp and first weft yarns is 85:15; the mass ratio of nylon to surface-modified conductive fibers in the second warp yarn is 95:5; and the mass ratio of nylon to surface-modified conductive fibers in the third weft yarn is 95:5. The nylon has a fineness of 110 denier and 92 filaments; the spandex has a fineness of 30 denier; and the tension applied when the surface-modified conductive fibers are twisted with the nylon is 15 Newtons. S3. Warping, warping and heddle threading: Using the first and second warp yarns as raw materials, warping is performed according to a total of 9240 warp yarns, with the warping length being 110% of the greige fabric length. After warping, multiple warp heads are combined into one warp head by a warping machine. The combined warp head is then threaded and reed using a heddle threading method with the heddles threaded in a 1-2-3-4-5-6 sequence. The reed density is 21 teeth / cm, with 2 warp yarns threaded into each reed. S4. Weaving: Using the warp yarns prepared in step S3 and the first weft yarn, second weft yarn, and third weft yarn prepared in step S2 as raw materials, weaving is carried out on a water jet loom to obtain the grey fabric. S5. Pre-shrinking and pre-setting: The greige fabric is pre-shrinked using a desizing solution comprising: 60 g / L sodium hydroxide, 20 g / L desizing agent, 20 g / L scouring emulsifier, and 5 g / L penetrant. The fabric travel speed is controlled at 25 m / min, the rolling press pressure is maintained at 2.5 kg, and the treatment temperature is 90℃. The pre-shrinked greige fabric is then pre-set in a hot air tenter frame at 190℃, a speed of 25 m / min, and an overfeed rate of 4%. S6. Desizing and Dyeing: The pre-shaped fabric is desized in a dye bath. The desizing solution contains 40 g / L sodium hydroxide, 12.5 g / L desizing agent, 10 g / L scouring emulsifier, and 5 g / L penetrant. The desizing temperature is 95℃, and the time is 30 minutes. The desized fabric is then dyed using an overflow dyeing machine. The dye solution contains 0.3 wt% acid yellow, 2.0 wt% acid black, 4 g / L pH buffer, and 3 g / L leveling agent. After dyeing, a soaping and color-fixing treatment is performed. The soaping solution contains 3 g / L soaping agent. The treatment temperature is 75℃, and the treatment time is 20 minutes. S7. Softening and Shaping: The fabric dyed in step S6 is softened and shaped by applying a setting liquid through padding. The setting liquid contains 40 g / L of waterproofing agent, 20 g / L of waterproofing auxiliary agent, 10 g / L of crosslinking agent, and 5 g / L of penetrant. The machine speed is 30 m / min, the air volume is 1500 cubic feet / min, the overfeed rate is 8%, and the setting temperature is 170℃, resulting in a nylon conductive pearl dot four-way stretch fabric.

[0027] This embodiment also provides a nylon conductive pearl dot four-way stretch fabric, which is obtained by the processing technology of the aforementioned nylon conductive pearl dot four-way stretch fabric.

[0028] Example 2: This embodiment provides a processing technology for a four-way stretch fabric with conductive pearl dots, including the following steps: S1. Raw material pretreatment: White conductive wire is used as raw material, the fineness of which is 15 denier and the volume resistivity is less than 1.0×10⁻⁶. 3 Ω·cm; First, the white conductive wire is placed in a plasma treatment device and surface activated under an argon atmosphere. The plasma power is 500 watts and the treatment time is 15 minutes. Then, the activated white conductive wire is immersed in a 5% silane coupling agent solution and reacted at 50°C for 30 minutes. After removal and drying, surface-modified conductive fiber is obtained. The silane coupling agent is an aminosilane coupling agent, specifically γ-aminopropyltriethoxysilane. S2. Yarn Preparation: Using surface-modified conductive fibers, nylon, and spandex as raw materials, various yarns are prepared by a twisting machine: the first warp and first weft yarns are made by twisting nylon and spandex; the second warp yarn is made by twisting nylon and surface-modified conductive fibers; the second weft yarn is nylon; and the third weft yarn is made by twisting nylon and surface-modified conductive fibers. The mass ratio of nylon to spandex in the first warp and first weft yarns is 87:13; the mass ratio of nylon to surface-modified conductive fibers in the second warp yarn is 96:4; and the mass ratio of nylon to surface-modified conductive fibers in the third weft yarn is 96:4. The nylon has a fineness of 150 denier and 48 filaments; the spandex has a fineness of 40 denier; and the tension applied when the surface-modified conductive fibers are twisted with the nylon is 10 Newtons. S3. Warping, warping and heddle threading: Using the first and second warp yarns as raw materials, warping is performed according to a total of 9240 warp yarns, with the warping length being 115% of the greige fabric length; the multiple warped heads are combined into one head by a warping machine; the combined head is then threaded and heddle threaded, with the heddles threaded in a 1, 2, 3, 4, 5, 6 sequential pattern, and the heddle density being 22 teeth / cm, with 2 warp yarns threaded into each heddle; S4. Weaving: Using the warp yarns prepared in step S3 and the first weft yarn, second weft yarn, and third weft yarn prepared in step S2 as raw materials, weaving is carried out on a water jet loom to obtain the grey fabric. S5. Pre-shrinking and pre-setting: The greige fabric is pre-shrinked using a desizing solution, which includes: sodium hydroxide 70 g / L, desizing agent 15 g / L, scouring emulsifier 25 g / L, and penetrant 3 g / L. The fabric travel speed is controlled at 30 m / min, the rolling press pressure is maintained at 2 kg, and the treatment temperature is 95℃. The pre-shrinked greige fabric is then pre-set in a hot air tenter frame at a temperature of 200℃, a speed of 20 m / min, and an overfeed rate of 5%. S6. Desizing and Dyeing: The pre-shaped fabric is desized in a dyeing vat. The desizing solution contains 50 g / L sodium hydroxide, 10 g / L desizing agent, 12 g / L scouring emulsifier, and 3 g / L penetrant. The desizing temperature is 100℃, and the time is 25 minutes. The desized fabric is then dyed using an overflow dyeing machine. The dye solution contains 0.4 wt% acid yellow, 1.5 wt% acid black, 5 g / L pH buffer, and 2 g / L leveling agent. After dyeing, a soaping and color-fixing treatment is performed. The soaping solution contains 4 g / L soaping agent. The treatment temperature is 70℃, and the treatment time is 25 minutes. S7. Softening and Shaping: The fabric dyed in step S6 is softened and shaped by applying a setting liquid through padding. The setting liquid contains 45 g / L of waterproofing agent, 15 g / L of waterproofing auxiliary agent, 12 g / L of crosslinking agent, and 3 g / L of penetrant. The machine speed is 25 m / min, the air volume is 1600 cubic feet / min, the overfeed rate is 6%, and the setting temperature is 180℃, resulting in a nylon conductive pearl dot four-way stretch fabric.

[0029] This embodiment also provides a nylon conductive pearl dot four-way stretch fabric, which is obtained by the processing technology of the aforementioned nylon conductive pearl dot four-way stretch fabric.

[0030] Example 3: This embodiment provides a processing technology for a four-way stretch fabric with conductive pearl dots, including the following steps: S1. Raw material pretreatment: White conductive wire is used as raw material. The fineness of the white conductive wire is 20 denier, and the volume resistivity is less than 1.0 × 10⁻⁶. 3Ω·cm; First, the white conductive wire is placed in a plasma treatment device and surface activated under an argon atmosphere. The plasma power is 750 watts and the treatment time is 5 minutes. Then, the activated white conductive wire is immersed in a 1% silane coupling agent solution and reacted at 80°C for 10 minutes. After being removed and dried, surface-modified conductive fiber is obtained. The silane coupling agent is an aminosilane coupling agent, specifically γ-aminopropyltriethoxysilane. S2. Yarn Preparation: Using surface-modified conductive fibers, nylon, and spandex as raw materials, various yarns are prepared by a twisting machine: the first warp and first weft yarns are made by twisting nylon and spandex; the second warp yarn is made by twisting nylon and surface-modified conductive fibers; the second weft yarn is nylon; and the third weft yarn is made by twisting nylon and surface-modified conductive fibers. The mass ratio of nylon to spandex in the first warp and first weft yarns is 90:10; the mass ratio of nylon to surface-modified conductive fibers in the second warp yarn is 97:3; and the mass ratio of nylon to surface-modified conductive fibers in the third weft yarn is 97:3. The nylon has a fineness of 70 denier and 136 filaments; the spandex has a fineness of 20 denier; and the tension applied when the surface-modified conductive fibers are twisted with the nylon is 20 Newtons. S3. Warping, warping, and heddle threading: Using the first and second warp yarns as raw materials, warping is performed according to a total of 9240 warp yarns, with the warping length being 105% of the greige fabric length. After warping, multiple warp heads are combined into one warp head using a warping machine. The combined warp head is then threaded and reed using heddle threading in a 1-2-3-4-5-6 sequence, with a reed density of 20 teeth / cm, and 2 warp yarns threaded into each reed. S4. Weaving: Using the warp yarns prepared in step S3 and the first weft yarn, second weft yarn, and third weft yarn prepared in step S2 as raw materials, weaving is carried out on a water jet loom to obtain the grey fabric. S5. Pre-shrinking and pre-setting: The greige fabric is pre-shrinked using a desizing solution comprising: 50 g / L sodium hydroxide, 25 g / L desizing agent, 15 g / L scouring emulsifier, and 7 g / L penetrant. The fabric travel speed is controlled at 20 m / min, the rolling press pressure is maintained at 3 kg, and the treatment temperature is 85℃. The pre-shrinked greige fabric is then pre-set in a hot air tenter frame at 180℃, a speed of 30 m / min, and an overfeed rate of 3%. S6. Desizing and Dyeing: The pre-shaped fabric is desized in a dyeing vat. The desizing solution contains 30 g / L sodium hydroxide, 15 g / L desizing agent, 8 g / L scouring emulsifier, and 7 g / L penetrant. The desizing temperature is 90℃, and the time is 35 minutes. The desized fabric is then dyed using an overflow dyeing machine. The dye solution contains 0.2 wt% acid yellow, 2.5 wt% acid black, 3 g / L pH buffer, and 4 g / L leveling agent. After dyeing, a soaping and color-fixing treatment is performed. The soaping solution contains 2 g / L soaping agent. The treatment temperature is 80℃, and the treatment time is 15 minutes. S7. Softening and Shaping: The fabric dyed in step S6 is softened and shaped by applying a setting liquid through padding. The setting liquid contains 35 g / L of waterproofing agent, 25 g / L of waterproofing auxiliary agent, 8 g / L of crosslinking agent, and 7 g / L of penetrant. The machine speed is 35 m / min, the air volume is 1400 cubic feet / min, the overfeed rate is 10%, and the setting temperature is 160℃, resulting in a nylon conductive pearl dot four-way stretch fabric.

[0031] This embodiment also provides a nylon conductive pearl dot four-way stretch fabric, which is obtained by the processing technology of the aforementioned nylon conductive pearl dot four-way stretch fabric.

[0032] Comparative Example 1: In this comparative example, the similarities with Example 1 will not be repeated, and the differences are as follows: Unmodified white conductive wires were used directly without plasma and silane coupling agent treatment.

[0033] Comparative Example 2: In this comparative example, the similarities with Example 2 will not be repeated, and the differences are as follows: The yarn structure is changed so that the surface-modified conductive fibers are only set in the warp direction, and the weft direction does not contain conductive fibers, with a distribution density of 2 fibers per square centimeter.

[0034] Comparative Example 3: In this comparative example, the similarities with Example 3 will not be repeated, and the differences are as follows: The pre-shrinking and pre-forming steps are omitted, and desizing and dyeing are carried out directly after weaving.

[0035] Comparative Example 4: In this comparative example, the similarities with Example 1 will not be repeated, and the differences are as follows: No leveling agent is used in the dyeing process, and the soaping and color-fixing treatment temperature is changed to 60℃ for 10 minutes.

[0036] Comparative Example 5: In this comparative example, the similarities with Example 2 will not be repeated, and the differences are as follows: No cross-linking agent is used in the softening and setting step, and the setting temperature is changed to 140℃ with an overfeed rate of 2%.

[0037] Performance test results and analysis: Fabric samples from three examples and five comparative examples were tested, and the results are shown in the table below. Test indicators included surface resistivity, elastic recovery rate, color fastness (dry and wet rubbing), and dimensional stability (warp and weft shrinkage after washing). The test methods adopted industry-standard practices: surface resistivity was measured using the triboelectric charge method according to GB / T 12703.1-2008, the standard for testing electrostatic properties; elastic recovery rate was determined according to GB / T 18318-2009, the test method for elasticity and resilience of textiles; color fastness was tested according to GB / T 3920-2008, the test method for color fastness to rubbing of textiles; and dimensional stability was performed according to GB / T 8628-2001, the method for determining dimensional changes after washing and drying of textiles. All tests were conducted under standard conditions of 20°C and 65% humidity. Specific test results are shown in Table 1.

[0038] As shown in Table 1, the fabrics of the three embodiments are superior to the comparative example in terms of surface resistivity, elastic recovery, color fastness, and dimensional stability. The surface resistivity of Examples 1, 2, and 3 is all below 10. 5 The resistivity of Comparative Example 1 was significantly higher than that of the original example (Ω / sq), while Comparative Example 1, which did not use surface-modified conductive fibers, showed a significant increase. This indicates that plasma and silane coupling agent treatment effectively improved the interfacial bonding between the conductive fibers and the matrix, forming a stable three-dimensional conductive network, thus confirming the improved interface and uniform conductivity. The elastic recovery rates of the examples were all higher than 90%, while Comparative Examples 3 and 5 showed decreased recovery rates due to the omission of pre-shrinking or alteration of softening parameters. This demonstrates that the process combination of the present invention effectively maintains the elasticity of the fabric.

[0039] Table 1 Analysis of test results: Test results show that, in terms of color fastness, all examples achieved grade 4 or higher, while Comparative Example 4 had poor color fastness due to improper dyeing parameters, confirming the positive impact of the dyeing process of low-temperature penetration followed by high-temperature fixing on color fastness. Regarding dimensional stability, the shrinkage rates of all examples were below 1.5%, while Comparative Example 3 had a higher shrinkage rate due to the omission of pre-shrinking and pre-forming, highlighting the synergistic effect of these processes on dimensional stability. Overall, the examples achieved a balance between conductivity, elasticity, and durability by optimizing raw materials and process parameters.

[0040] This invention modifies the surface of conductive fibers using plasma and silane coupling agents, and combines optimized textile process parameters to achieve stable and durable conductivity, excellent color fastness, and dimensional stability while maintaining the high elasticity of the fabric.

[0041] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A processing technology of nitrile conductive pearl dot stretch fabric, characterized in that, The method comprises the following steps: S1, raw material pretreatment: taking white conductive wire as raw material, modifying the same with silane coupling agent after plasma treatment to obtain surface modified conductive fiber; S2, yarn preparation: taking surface modified conductive fiber, polyamide fiber and spandex as raw materials, a plurality of yarns are prepared by a twisting machine; wherein the first warp yarn and the first weft yarn are twisted by the polyamide fiber and the spandex, the second warp yarn is twisted by the polyamide fiber and the surface modified conductive fiber, the second weft yarn is the polyamide fiber, and the third weft yarn is twisted by the polyamide fiber and the surface modified conductive fiber; S3, warping, doubling and threading: taking the first warp yarn and the second warp yarn as raw materials, warping is performed according to the total warp count of 9240, and the warping length is 105-115% of the length of the gray cloth; the plurality of disc heads after warping are combined into one disc head by a doubling machine; and the combined disc head is threaded and reeded; S4, weaving: taking the warp yarn prepared in step S3 and the first weft yarn, the second weft yarn and the third weft yarn prepared in step S2 as raw materials, weaving is performed on a water jet loom to obtain a gray cloth; S5, preshrinking and pre-setting: the gray cloth is subjected to preshrinking treatment with a desizing working solution; and the preshrunk gray cloth is subjected to pre-setting; S6, desizing and dyeing: the set gray cloth is subjected to desizing treatment in a dye vat; and the desized gray cloth is subjected to dyeing with an overflow dyeing machine; S7, soft setting: the dyed gray cloth in step S6 is subjected to soft setting by applying a setting solution through the impregnation method to obtain a spandex conductive pearl point four-way stretch fabric.

2. The processing technology of the nitrile conductive pearl dot four-way stretch fabric according to claim 1, characterized in that, The specific steps of the raw material pretreatment are as follows: first, the white conductive wire is placed in a plasma treatment device and subjected to surface activation in an argon atmosphere, the plasma power is 500-1000 watts, and the treatment time is 5-15 minutes; then, the activated white conductive wire is immersed in a silane coupling agent solution with a mass concentration of 1-5% and reacted at 50-80℃ for 10-30 minutes, and then dried to obtain the surface modified conductive fiber.

3. The processing technology of the nitrile conductive pearl dot four-way stretch fabric according to claim 1, characterized in that, The white conductive filament has a fineness of 15-25 denier and a volume resistivity of less than 1.0 x 10 3 Ω-cm.

4. The processing technology of the nitrile conductive pearl dot four-way stretch fabric according to claim 1, characterized in that, The silane coupling agent is an amino silane coupling agent, and the amino silane coupling agent is gamma-aminopropyl triethoxysilane.

5. The processing technology of the nitrile conductive pearl dot four-way stretch fabric according to claim 1, characterized in that, The mass ratio of the polyamide fiber to the spandex in the first warp yarn and the first weft yarn is 85:15 to 90:10; the mass ratio of the polyamide fiber to the surface modified conductive fiber in the second warp yarn is 95:5 to 97:3; and the mass ratio of the polyamide fiber to the surface modified conductive fiber in the third weft yarn is 95:5 to 97:

3. The polyamide fiber has a fineness of 70-150 denier and a single filament count of 48-136; The spandex has a fineness of 20-40 denier; The tension applied when twisting the surface modified conductive fiber and the polyamide fiber is 10-20 newtons.

6. The processing technology of the nitrile conductive pearl dot four-way stretch fabric according to claim 1, characterized in that, In the threading and reeding, the threading is performed in the order of 1, 2, 3, 4, 5 and 6, the reeding density is 20-22 teeth per centimeter, and 2 warp yarns are threaded into each reed.

7. The processing technology of the nitrile conductive pearl dot four-way stretch fabric according to claim 1, characterized in that, In the preshrinking, the cloth running speed is controlled at 20-30 meters per minute, and the roll pressure is maintained at 2-3 kilograms; The preshrinking is performed at a temperature of 85-95℃; and the desizing working solution comprises: sodium hydroxide 50-70 grams per liter, desizing agent 15-25 grams per liter, scouring emulsifier 15-25 grams per liter, and penetrating agent 3-7 grams per liter.

8. The processing technology of the nitrile conductive pearl dot four-way stretch fabric according to claim 1, characterized in that, The pre-shrinked fabric is pre-formed in a hot air tenter frame under the following conditions: temperature 180-200℃, speed 20-30 m / min, and overfeed rate 3-5%. The desizing solution for the desizing treatment contains 30-50 g / L sodium hydroxide, 10-15 g / L desizing agent, 8-12 g / L refining emulsifier, and 3-7 g / L penetrant; the desizing temperature for the desizing treatment is 90-100℃, and the time is 25-35 minutes. The dyeing solution contains 0.2-0.4 wt% Acid Yellow, 1.5-2.5 wt% Acid Black, 3-5 g / L pH buffer, and 2-4 g / L leveling agent; After the dyeing is completed, a soaping and color-fixing treatment is performed. The soaping solution contains 2-4 g / L of soaping agent, the treatment temperature is 70-80℃, and the treatment time is 15-25 minutes.

9. The processing technology of the nitrile conductive pearl dot four-way stretch fabric according to claim 1, characterized in that, In the softening and setting process, the setting liquid contains 35-45 g / L of waterproofing agent, 15-25 g / L of waterproofing auxiliary agent, 8-12 g / L of crosslinking agent, and 3-7 g / L of penetrant, and the softening and setting process is carried out at 160-180°C; During the soft shaping process, the machine speed is 25-35 meters per minute, the air volume is 1400-1600 cubic feet per minute, and the overfeed rate is 6-10%.

10. A nylon conductive pearl dot four-way stretch fabric, obtained by the processing technology of the nylon conductive pearl dot four-way stretch fabric according to any one of claims 1 to 9.

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