Multifunctional anti-static knitted fabric and preparation method of finished fabric

Abstract

The application provides a multifunctional anti-static knitted fabric, which is a three-dimensional breathable organization formed by a double-needle bed weaving system, and specifically shows a honeycomb jacquard structure penetrating the whole fabric, comprising a surface layer, an intermediate layer and a bottom layer arranged in sequence; wherein the bottom layer is a skin contact side; the surface layer is an anti-static and antibacterial layer; the intermediate layer is an elastic and quick-drying hollow layer; and the bottom layer is a dynamic temperature regulating layer. The scheme meets the safety protection needs of industrial workers, and improves the wearing comfort and practicality.

Description

Technical Field

[0001] This invention belongs to the field of functional textile technology, and specifically relates to a method for preparing a multifunctional antistatic knitted fabric and the finished fabric. Background Technology

[0002] As industrial workers demand greater comfort in their workwear, knitted fabrics, due to their softness and breathability, are increasingly being used in the field. Taking the polyester-cotton blend antistatic knitted fabric used by Sinopec in summer as an example, it achieves a cost-effectiveness advantage through the combination of polyester fibers (abrasion resistance) and cotton fibers (moisture absorption and skin-friendliness). However, some frontline employees in high-temperature, high-humidity, and strong UV-exposed work areas have reported problems such as stuffiness, insufficient comfort, and poor lightfastness due to sun exposure. Therefore, developing multifunctional antistatic knitted fabrics with adaptive adjustment of individual thermal and humidity comfort is of great significance.

[0003] Currently, the most common heat and moisture comfort textile fabrics on the market have the following shortcomings: (1) Imbalance of heat and moisture under humid conditions Most fabrics exhibit good thermal and moisture resistance when dry, but their thermal resistance decreases significantly and their moisture resistance increases when soaked with sweat, leading to an imbalance between heat dissipation and heat production, resulting in a sticky and cold feeling. In particular, natural fibers (such as cotton) dry slowly after absorbing moisture, while synthetic fibers (such as ordinary polyester) dry quickly but have poor moisture absorption.

[0004] (2) Insufficient adaptability to dynamic environments Existing fabrics do not respond well to dynamic factors such as friction and stretching during exercise. For example, during strenuous exercise, the fabric becomes heavier due to the accumulation of sweat, the capillary effect weakens, resulting in a decrease in the moisture wicking rate and an inability to maintain a stable microenvironment.

[0005] (3) Defect of single function Cooling fabrics: Fibers that rely on mineral fillers (mica, jade) have good thermal conductivity, but excessive addition will reduce mechanical properties; cooling additives such as menthol have poor durability.

[0006] One-way moisture-wicking fabric: Some products rely on the finishing water-repellent layer, which is prone to failure after multiple washes and may cause backflow due to improper structural design. Summary of the Invention

[0007] The purpose of the embodiments in this specification is to provide a method for preparing a multifunctional antistatic knitted fabric and the finished fabric.

[0008] To solve the above-mentioned technical problems, the embodiments of this application are implemented in the following ways: In a first aspect, this application provides a multifunctional antistatic knitted fabric, which is a three-dimensional breathable structure formed by a double needle bed knitting system. The three-dimensional breathable structure is specifically manifested as a honeycomb jacquard structure that runs through the entire fabric, including a top layer, a middle layer and a bottom layer stacked in sequence; wherein, the bottom layer is the side that comes into contact with the skin. The surface layer is an antistatic and antibacterial layer; The middle layer is an elastic, quick-drying hollow layer; The bottom layer is a dynamic temperature-regulating layer.

[0009] In one embodiment, the surface layer is made of organic conductive fibers and regenerated cellulose yarns through a twisting process to form conductive yarns, which are embedded in a honeycomb jacquard structure at a spacing of 0.7-1.0 cm. The composite ratio of organic conductive fiber and regenerated cellulose yarn is 97%-99% : 1%-3%; Organic conductive fibers include carbon black-based nylon conductive fibers or carbon black-based polyester conductive fibers; Regenerated cellulose yarn includes one or more of bamboo fiber, lyocell fiber, and seaweed fiber.

[0010] In one embodiment, the intermediate layer is made of ammonia-free mechanical elastic fiber, which is composed of PBT and PET composite. The ammonia-free mechanical elastic fiber adopts a double helix structure, and the cross-section of the ammonia-free mechanical elastic fiber has a figure-eight groove.

[0011] In one embodiment, the bottom layer is made of multifunctional polyester fiber, which is polyester fiber with PCM phase change microcapsules and cooling masterbatch embedded inside, accounting for 8-12%; wherein, the particle size of PCM phase change microcapsules is ≤5μm, and the particle size of cooling masterbatch is ≤8μm; the yarn count of multifunctional polyester fiber is 40D~75D. The cross-section of the multifunctional polyester fiber is cross-shaped, and the surface is grooved.

[0012] In one embodiment, the multifunctional polyester fiber is prepared by low-temperature co-spinning; During the spinning stage, segmented temperature control is adopted for the masterbatch pre-melting zone, blending zone, and spinneret. Specifically, the masterbatch pre-melting zone is 165-175℃, the blending zone is 180-190℃, and the spinneret is 185-195℃. The moisture content is controlled to be ≤50ppm, the spinning speed is 2700-3500m / min, the spinneret length-to-diameter ratio is 2.5:1, and the spinneret is set to a cross shape.

[0013] In one embodiment, the transverse density of the multifunctional antistatic knitted fabric is set to 25-40 warp rows / 5cm, and the longitudinal density is set to 18-31 transverse rows / 5cm; the embedding spacing of the organic conductive fibers in the multifunctional antistatic knitted fabric is 0.7-1.0cm.

[0014] In one embodiment, the number of fabric loops in the bottom layer is less than the number of fabric loops in the top layer.

[0015] Secondly, this application provides a method for manufacturing a multifunctional antistatic knitted finished fabric based on the multifunctional antistatic knitted fabric of the first aspect, comprising: The pretreatment process aims to remove spinning oil, protect the temperature-sensitive structure of PCM phase change microcapsules, and improve wettability. The dyeing process employs a two-bath dyeing method, first dyeing the intermediate and bottom layers, and then dyeing the surface layer. Post-processing for self-healing coatings, including microencapsulated siloxane prepolymers, with a roll-off rate of 70%, 160℃×30 s, and a crack healing rate of >90%.

[0016] In one embodiment, the dyeing process for the intermediate and bottom layers uses 3% (owf) nano-disperse dye, pH 5.0, liquor ratio 1:10, 110°C × 30 min, wherein the heating rate is 1.5°C / min.

[0017] In one embodiment, during the dyeing process, when dyeing the surface layer, vinyl sulfone-type reactive dye (2% owf) is used for simultaneous treatment with a quaternary ammonium salt modifier and / or neutral adsorption is used followed by alkali fixation.

[0018] As can be seen from the technical solutions provided in the embodiments of this specification above, this solution achieves differential moisture absorption, wicking and moisture transfer and diffusion, and a significant difference in the number and specific surface area of ​​moisture-absorbing and moisture-wicking fibers per unit volume between the inner and outer layers through the innovation of raw materials, the optimized design of the organizational structure, the different configurations of different raw material components in the layer structure, and reasonable dyeing and finishing processes. This ultimately enables the fabric to adaptively adjust personal thermal and moisture comfort, achieve dynamic temperature control, and have high light fastness. It overcomes the problems of traditional summer antistatic knitted fabrics, such as stuffiness, insufficient comfort, single function, poor antibacterial durability, and poor light fastness. While meeting the safety protection needs of industrial workers, it also improves wearing comfort and practicality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A structural schematic diagram of the multifunctional antistatic knitted fabric provided in this application; Figure 2Dynamic temperature control curve of the multifunctional antistatic knitted fabric provided in this application; Figure 3 A schematic diagram of moisture management for the multifunctional antistatic knitted fabric provided in this application. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0022] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0023] Various modifications and variations can be made to the specific embodiments described in this application without departing from the scope or spirit of this application, as will be apparent to those skilled in the art. Other embodiments derived from this application will be obvious to those skilled in the art. This application specification and embodiments are merely exemplary.

[0024] The terms “include,” “including,” “have,” “contain,” etc., used in this article are all open-ended terms, meaning that they include but are not limited to.

[0025] Unless otherwise specified, "parts" in this application refers to parts by weight.

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] Reference Figure 1 It shows a structural schematic diagram of the multifunctional antistatic knitted fabric applicable to the embodiments of this application.

[0028] like Figure 1 As shown, the multifunctional antistatic knitted fabric has a structure of three-dimensional breathable organization formed by a double needle bed knitting system. The three-dimensional breathable organization is specifically manifested as a honeycomb jacquard structure that runs through the entire fabric, which may include: a top layer 1, a middle layer 2 and a bottom layer 3 stacked in sequence; wherein, the bottom layer 3 is the side that comes into contact with the skin. Surface layer 1 is an antistatic and antibacterial layer; Intermediate layer 2 is an elastic, quick-drying hollow layer; The bottom layer 3 is a dynamic temperature control layer.

[0029] Specifically, three-dimensional breathable fabric refers to a three-dimensional structure formed by a double needle bed knitting system. This fabric is specifically realized as a honeycomb jacquard structure, which is composed of hexagonal units arranged by interlacing yarns. The spatial characteristic of three-dimensional breathable fabric is a three-dimensional spaced structure, specifically manifested as an air gap formed by the front and back needle bed knitting layers (top layer 1 / middle layer 2 / bottom layer 3).

[0030] Among them, the three-dimensional breathable structure achieves hexagonal honeycomb units through the interlacing of yarns and the shifting of pick-up needles. Specifically, it includes: shifting the unwoven pick-up needle position one stitch to the left in each row to form an interlaced honeycomb texture; or using a cycle of two knit stitches + one pick-up needle, combined with a row-by-row offset process to form a three-dimensional concave-convex effect.

[0031] The three-dimensional breathable structure formed by the double needle bed knitting system is as follows: three layers are knitted sequentially on the front and back needle beds, and the yarn interlacing is controlled by picking up and shifting needles, ultimately forming a three-dimensional spaced knitted fabric that combines breathability and antistatic function.

[0032] In one embodiment, the surface layer 1 is made of organic conductive fibers and regenerated cellulose yarns through a twisting process to form conductive yarns, which are embedded in a honeycomb jacquard structure at a spacing of 0.7-1.0 cm. The composite ratio of organic conductive fiber and regenerated cellulose yarn is 97%-99% : 1%-3%; Organic conductive fibers include carbon black-based nylon conductive fibers or carbon black-based polyester conductive fibers; Regenerated cellulose yarn includes one or more of bamboo fiber, lyocell fiber, and seaweed fiber.

[0033] Specifically, organic conductive fibers have good electrical conductivity; under standard conditions (20℃, 65% relative humidity), their resistivity is generally around 10 Ω·cm. 2 -10 8 The resistivity remains constant within the range of Ω•cm, is largely unaffected by humidity, and maintains stable conductivity under various environmental conditions. The organic conductive fiber is prepared using a core-sheath composite spinning method, where carbon black is uniformly dispersed in a fiber-forming polymer, and then the mixture is spun into conductive fibers with a specified yarn count of 20D. Organic conductive fibers can be made from carbon black-based nylon or polyester. Both carbon black-based nylon and polyester conductive fibers exhibit good conductivity stability and durability, maintaining excellent antistatic properties even after repeated washing.

[0034] Regenerated cellulose yarn possesses characteristics such as high moisture absorption and regain, high water retention, and excellent antibacterial effects. The preparation method for regenerated cellulose yarn involves obtaining regenerated cellulose fibers through physical or chemical methods, then processing the fibers through processes such as mixing and opening, drawing and roving, spinning, and twisting to obtain 32-40 count regenerated cellulose yarn. Regenerated cellulose yarn includes one or more of bamboo fiber, lyocell fiber, and seaweed fiber. Bamboo fiber contains a class of phenolic compounds called "bamboo quinone" (or bamboo kun), which belongs to anthraquinone derivatives. It can disrupt the cell wall and cell membrane structure of bacteria, interfering with the metabolic processes of microorganisms, thereby inhibiting or killing various pathogenic bacteria. Lyocell fiber supports thermoregulation through moisture management; its structure can regulate the absorption and release of moisture, helping to improve wearing comfort and the body's natural thermoregulation. Simultaneously, lyocell fiber effectively absorbs sweat, thereby reducing moisture on the fiber surface and effectively inhibiting bacteria. Seaweed fiber is rich in minerals and vitamins, such as calcium, magnesium, zinc, and vitamin E. These components not only nourish the skin, but its unique fiber structure also absorbs and locks in moisture, forming a moisturizing film that helps maintain the skin's moisture balance. Furthermore, seaweed fiber possesses natural antibacterial properties, inhibiting bacterial growth and reproduction, providing a healthier and more comfortable experience for the wearer. Regenerated cellulose yarn can be flexibly combined with bamboo fiber, lyocell fiber, and seaweed fiber according to actual needs and application scenarios, thus meeting the requirements of different environments.

[0035] Conductive yarn is made from organic conductive fibers and regenerated cellulose fibers through a twisting process. The twisting parameters can be set to 55 twists / 10cm, and the composite ratio of organic conductive fibers and regenerated cellulose fibers is set according to actual needs. The double-needle bed knitting parameters are as follows: The front needle bed (outer layer 1 knitting) is configured with a full-size needle bed, using conductive yarns spaced 0.7-1.0cm apart. A staggered honeycomb texture structure is formed by picking up needles one stitch to the left in each row. The back needle bed simultaneously knits the middle layer 2 and the bottom layer 3, connecting them to the outer layer 1 through tucking or extension yarns to construct a three-dimensional spaced structure.

[0036] In this embodiment, the surface layer 1 is made of a composite of regenerated cellulose yarn and organic conductive fibers. This not only improves the overall comfort of the fabric but also effectively inhibits bacterial growth, providing users with a healthier and safer wearing experience. Simultaneously, during the weaving process, the precise control of the embedding spacing of this composite yarn ensures a uniform distribution of conductivity, further enhancing the fabric's antistatic effect.

[0037] In one embodiment, the intermediate layer 2 is made of ammonia-free mechanical elastic fiber, which is composed of PBT (Polybutylene terephthalate) and PET (Polyethylene terephthalate). The ammonia-free mechanical elastic fiber adopts a double helix structure, and the cross-section of the ammonia-free mechanical elastic fiber has a figure-eight groove.

[0038] Specifically, ammonia-free mechanical elastic fiber is a new type of elastic fiber composed of PBT and PET. It achieves its elastic function through a unique double-helix structure, providing excellent elasticity without the need for added spandex. This fiber has a cotton-like feel, with a cross-section featuring V-shaped grooves that wick moisture outwards, keeping the skin dry and improving its moisture-wicking and quick-drying properties. The yarn count of this fiber is 40D~75D, and its elastic recovery rate is 10% higher than that of ordinary mechanical elastic fibers, while also possessing a superior cotton-like feel.

[0039] In one embodiment, the bottom layer 3 is made of multifunctional polyester fiber, which is polyester fiber embedded with PCM phase change microcapsules and cooling masterbatch, accounting for 8-12%; wherein, the particle size of PCM phase change microcapsules is ≤5μm, and the particle size of cooling masterbatch is ≤8μm. The cross-section of the multifunctional polyester fiber is cross-shaped, and the surface is grooved.

[0040] Among them, the multifunctional polyester fiber is prepared by low-temperature co-spinning; During the spinning stage, segmented temperature control is adopted for the masterbatch pre-melting zone, blending zone, and spinneret. Specifically, the masterbatch pre-melting zone is 165-175℃, the blending zone is 180-190℃, and the spinneret is 185-195℃. The moisture content is controlled to be ≤50ppm, the spinning speed is 2700-3500m / min, the spinneret length-to-diameter ratio is 2.5:1, and the spinneret is set to a cross shape.

[0041] Specifically, the bottom layer 3 uses a multifunctional polyester fiber that combines continuous cooling, dynamic temperature control, and quick drying. The preparation method involves low-temperature blending and spinning (185±5℃) to obtain a specified yarn count of 40D~75D. During the spinning stage, PCM phase change microcapsules (particle size ≤5μm) are mixed into the cooling polyester masterbatch (≤8μm) at a ratio of 8–12%. The melting temperature is 185±5℃ to protect the temperature-sensitive components of the PCM. The moisture content is controlled to ≤50ppm to prevent microcapsule hydrolysis and rupture. The spinning speed is 2700-3500m / min to reduce shear force damage to the microcapsules. The spinneret's length-to-diameter ratio is 2.5:1 to reduce melt flow resistance. The spinneret is cross-shaped; this special cross-sectional structure and surface grooves form numerous capillaries. Once the body sweats, these capillaries can utilize capillary action to quickly transport absorbed sweat from the skin surface to the outer layer of the fabric. Furthermore, the cooling masterbatch lowers the initial perceived temperature, and the irregular cross-section design of the fiber increases the contact area for cooling, accelerating sweat evaporation; the PCM microcapsules regulate temperature fluctuations by absorbing / releasing latent heat, delaying temperature rise, and the dual effects extend the duration of the cooling sensation by 2 to 3 times. Thus, a multifunctional polyester fiber is achieved, combining continuous cooling, long-lasting temperature control, and quick drying.

[0042] A multifunctional antistatic knitted fabric, with the bottom layer 3 made of multifunctional polyester fiber that combines continuous cooling, long-lasting temperature control, and quick drying. Its key technologies and solutions are as follows: (1) Add polyvinyl alcohol / starch mixed slurry (concentration 14~15%) as a pre-coating to enhance the strength of the microcapsule wall; (2) Segmented temperature control is adopted: masterbatch pre-melting zone (170℃) → blending zone (185℃) → spinneret (190℃); (3) Dispersion uniformity: Cooling masterbatch particle size ≤ 8 μm, PCM microcapsule particle size ≤ 5 μm, to prevent spinning head breakage; (4) The twin-screw extruder uses high meshing thread elements to improve the uniformity of mixing.

[0043] The performance comparison results of the fibers after adopting the above technologies are shown in Table 1 below.

[0044] Table 1. Comparison of properties and technical characteristics of multifunctional fibers

[0045] In one embodiment, the transverse density of the multifunctional antistatic knitted fabric is set to 25-40 warp rows / 5cm, and the longitudinal density is set to 18-31 transverse rows / 5cm; the embedding spacing of the organic conductive fibers in the multifunctional antistatic knitted fabric is 0.7-1.0cm.

[0046] Specifically, the multifunctional antistatic knitted fabric features a three-dimensional breathable structure (honeycomb jacquard) using a double-needle bed knitting system to create a three-dimensional interleaved structure. The outer layer (1), middle layer (2), and bottom layer (3) are knitted sequentially through front and back needle beds. The 20D organic conductive fibers in the outer layer (1) are embedded at a spacing of 0.7-1.0 cm, ensuring a continuous and effective static dissipation network across the entire fabric surface. This guarantees the antistatic effect while avoiding the excessive use of conductive fibers that could negatively impact comfort and cost. Setting the warp density to 25-40 rows / 5cm and the weft density to 18-31 rows / 5cm balances the fabric's breathability, elasticity, stability, and overall weight, achieving three-dimensional breathability and comfortable wear.

[0047] In one embodiment, the number of yarn loops in the bottom layer 3 is less than the number of yarn loops in the top layer 1. The side with fewer yarn loops is applied to the bottom layer 3, which is the side in contact with the skin, while the side with more yarn loops is applied to the top layer 1. By using yarns of different thicknesses and structures on the front and back of the fabric, a pressure difference in moisture is created between the inner and outer surfaces, accelerating the moisture wicking speed of the fabric and improving its quick-drying properties.

[0048] In one embodiment, during the weaving process of the multifunctional antistatic knitted fabric, different tensions are applied to the yarns of the top layer 1, the middle layer 2, and the bottom layer 3 to enhance the texture contrast of the three-dimensional honeycomb jacquard structure.

[0049] The bottom layer 3 of the multifunctional antistatic knitted fabric achieves dynamic temperature control, while the three-dimensional breathable structure enables dynamic moisture management through differential capillary effect. Its working mechanism is as follows: (1) Dynamic temperature control stage ① Initial contact stage The bottom layer of cooling masterbatch preferentially acts on the initial contact stage, and the irregular fiber cross-section design increases the contact cooling area to achieve a rapid temperature drop.

[0050] ② Transition phase After the cooling effect weakens, the PCM phase change microcapsules initiate the phase change process, absorb excess heat, prevent the temperature from rising again, and form a smooth transition.

[0051] ③Temperature stabilization stage PCM phase change microcapsules continuously regulate the temperature, keeping it stable within a comfortable range, resulting in an instant cooling sensation followed by sustained temperature stability.

[0052] Based on the above mechanism, a dynamic temperature control curve is plotted, such as... Figure 2 As shown in the figure. This curve is based on the phase change threshold design of PCM phase change microcapsules (e.g., 28°C) to ensure that the temperature is always dynamically balanced around the comfort point.

[0053] (2) Moisture management mechanisms, such as Figure 3 As shown.

[0054] ① Sweat conduction (bottom layer 3) It uses multifunctional polyester fibers that combine continuous cooling, long-lasting temperature control, and quick drying to form the bottom three-mesh structure. The surface tension gradient guides the directional transmission of liquid sweat, and the gaps between the fibers form microchannels to ensure rapid moisture wicking.

[0055] ② Sweat distribution layer (middle layer 2) The capillary pressure difference between different fibers creates a differential effect, and sweat spontaneously migrates from the bottom layer 3 to the middle layer 2. The three-dimensional structure provides force to accelerate the transmission.

[0056] ③ Sweat treatment layer (top layer 1) It uses regenerated cellulose fiber yarn (wet regain ≥13%), integrates natural antibacterial components (antibacterial rate >70%), and has a large specific surface area to promote rapid evaporation.

[0057] This structure achieves a composite moisture regulation effect through: ① gradient surface energy design to establish sweat transmission dynamics; ② multi-scale pores to regulate gas-liquid two-phase flow; and ③ synergistic effects of functional materials: an inner layer for quick drying, a middle layer for buffering (preventing back osmosis), and an outer layer for locking in moisture (maintaining a dry skin zone).

[0058] The multifunctional antistatic knitted fabric provided in this application can adaptively adjust personal thermal and moisture comfort, and the fabric has dynamic temperature control, long-lasting coolness, good breathability, excellent antibacterial properties, superior antistatic properties, and high light fastness.

[0059] This application also provides a method for manufacturing a multifunctional antistatic knitted finished fabric based on the multifunctional antistatic knitted fabric provided in the above embodiments, including the following steps: The pretreatment process aims to remove spinning oil, protect the temperature-sensitive structure of PCM phase change microcapsules, and improve wettability. The dyeing process uses a two-bath dyeing method, first dyeing the intermediate layer 2 and the bottom layer 3, and then dyeing the surface layer 1. Post-processing for self-healing coatings, including microencapsulated siloxane prepolymers, with a roll-off rate of 70%, 160℃×30 s, and a crack healing rate of >90%.

[0060] Specifically, the pretreatment process employs plasma activation technology and ultrasonic-assisted cleaning technology.

[0061] Among them, plasma activation technology: In a radio frequency plasma device, using argon as the working gas, the fibers are treated for 3 minutes at a power of 150W and a pressure of 200Pa. This reduces the fiber surface contact angle through a combination of physical sputtering and chemical etching, while simultaneously introducing oxygen-containing polar groups. The processing temperature (≤60℃) ensures the structural integrity of the PCM phase change microcapsules. This technology, using argon plasma treatment (150W / 3min), effectively reduces the fiber surface contact angle, removes the hydrophobic layer through physical sputtering and chemical etching, and introduces polar groups to improve wettability. This technology has been proven to improve dyeing uniformity without damaging the PCM phase change microcapsule structure.

[0062] Ultrasonic-assisted cleaning process: The process involves treating the sample in an ultrasonic cleaning tank for 10-20 minutes. A cleaning solution containing 0.5% nonionic surfactant and 0.2% sodium citrate at 45°C is prepared, utilizing cavitation to decompose the oil molecules. After rinsing, the residual oil content is ≤0.5mg / m³. 2 The overall energy consumption is reduced by 20% compared to traditional processes. Ultrasonic cleaning is introduced into the pretreatment process; its cavitation effect can specifically decompose the molecular chains of spinning oils, achieving a 40% increase in oil removal rate and a 20% reduction in overall energy consumption compared to traditional processes. This process achieves cleaning through mechanical vibration, avoiding damage to temperature-sensitive phase change materials caused by high temperatures or strong chemical reagents.

[0063] The interval between the two process stages is controlled within 30 minutes, and the fiber moisture content is maintained at 12-15%. The advantages of the composite process are that dry plasma treatment and wet ultrasonic cleaning complement each other, which not only ensures the stability of the PCM phase change threshold (DSC melting peak temperature difference ≤1℃), but also reduces the COD value of wastewater by 35%, which meets the requirements of green manufacturing.

[0064] The production process of microencapsulated siloxane prepolymers includes the following steps: First, a low-viscosity, highly reactive siloxane prepolymer is selected as the core material, and a polyurethane / nano-silica hybrid wall material or urea-formaldehyde resin wall material is used as the encapsulation material. Microcapsules are prepared by in-situ polymerization (suitable for polyurethane wall materials) or interfacial polymerization (suitable for urea-formaldehyde resin wall materials), controlling key parameters such as reaction temperature and stirring speed. In the post-processing stage, washing, drying, and particle size control (such as ultrasonic dispersion or homogenization) ensure that the microcapsules reach the nanoscale. The microcapsules are uniformly dispersed in a coating matrix (such as epoxy resin). When cracks appear in the coating, the stress at the crack tip triggers the microcapsule rupture, releasing the siloxane prepolymer which polymerizes under the action of a catalyst, filling the crack and curing, achieving a repair effect with a healing rate >90%.

[0065] In one embodiment, when dyeing the intermediate layer 2 and the bottom layer 3 in the dyeing process, 3% (owf) nano-disperse dye is used, pH 5.0, liquor ratio 1:10, 110℃×30 min, wherein the heating rate is 1.5℃ / min.

[0066] In one embodiment, during the dyeing process, when dyeing the surface layer 1, vinyl sulfone-type reactive dye (2% owf) and quaternary ammonium salt modifier are used for simultaneous treatment and / or neutral adsorption followed by gradient alkali fixation is used.

[0067] In the simultaneous treatment of vinyl sulfone dyes and quaternary ammonium salt modifiers, the quaternary ammonium salt modifiers can enhance the hydrophilicity of the fibers and promote uniform dye adsorption. This method can improve the light fastness of the fabric.

[0068] In the process of neutral adsorption followed by gradient alkali fixation, the risk of color variation caused by alkali sensitivity in vinyl sulfone dyes can be significantly reduced by first neutralizing the dye (avoiding direct high pH leading to dye aggregation) and then adding alkali in stages. Gradual addition of sodium sulfate (e.g., 20 g / L each time) can maintain the stability of the dye liquor and prevent dye flocculation caused by a sudden drop in sodium ion concentration. This method can improve leveling and fixation rate; strict control of the gradient addition of the dyeing accelerator (sodium sulfate) prevents color variation.

[0069] The two methods mentioned above are solutions to different problems, but they can improve the overall staining effect through synergy.

[0070] The post-dyeing process uses supercritical CO2 water washing (120℃, 20 MPa), saving 100% of water and achieving a color fastness of ≥4 grade. By using supercritical CO2 to replace traditional water washing, zero water consumption is achieved while ensuring color fastness.

[0071] Example 1 A multifunctional antistatic knitted fabric includes a top layer 1, a middle layer 2, and a bottom layer 3 stacked in sequence.

[0072] The outer layer 1 is made of organic conductive fiber and regenerated cellulose yarn with a composite ratio of 97%:3% through a twisting process to form conductive yarn. The conductive yarn is embedded in the honeycomb jacquard structure with a spacing of 0.7cm. The organic conductive fiber is carbon black-based nylon conductive fiber, and the regenerated cellulose yarn is bamboo fiber.

[0073] The intermediate layer 2 is made of ammonia-free mechanical elastic fiber, which is composed of PBT and PET. The ammonia-free mechanical elastic fiber adopts a double helix structure and the cross-section of the ammonia-free mechanical elastic fiber is a figure-eight groove.

[0074] The bottom layer 3 uses multifunctional polyester fiber, which consists of PCM phase change microcapsules and cooling masterbatch embedded inside the polyester fiber, accounting for 8% of the total. Among them, the particle size of PCM phase change microcapsules is ≤5μm, and the particle size of cooling masterbatch is ≤8μm. The yarn count of the multifunctional polyester fiber is 75D. The cross-section of the multifunctional polyester fiber is cross-shaped, and the surface is grooved.

[0075] The preparation method of the above-mentioned multifunctional antistatic knitted fabric includes the following steps: Step 1: Surface preparation: 97% carbon black-based nylon conductive fiber and 3% bamboo fiber are twisted into conductive yarn. The twisting parameters are 55 twists / 10cm. The conductive yarn is embedded in the honeycomb jacquard structure at a spacing of 0.7cm.

[0076] The preparation method of carbon black-based nylon conductive fiber is as follows: Carbon black is uniformly dispersed in the fiber-forming polymer using a core-sheath composite spinning method, and then the mixture is spun into carbon black-based nylon conductive fiber with a specified yarn count of 20D using spinning equipment. The preparation method of bamboo fiber is as follows: Raw bamboo fiber is obtained through physical or chemical methods, and then the raw bamboo fiber is processed through mixing and opening → drawing and roving → spinning and twisting processes to obtain 40-count bamboo fiber.

[0077] Step 2, Preparation of the intermediate layer: It is made of ammonia-free mechanical elastic fiber. The preparation method is based on PBT and PET composite, adopts a double helix structure, and obtains a specified yarn count of 40D.

[0078] Step 3: Preparation of the bottom layer: Low-temperature blending spinning (185±5℃) yields a specified yarn count of 75D. During the spinning stage, PCM phase change microcapsules (particle size ≤5μm) are mixed into the cooling polyester masterbatch (≤8μm) at a ratio of 8%. The melting temperature is 185±5℃ to protect the temperature-sensitive components of the PCM. The moisture content is controlled to ≤50ppm to prevent microcapsule hydrolysis and rupture. The spinning speed is 2700m / min to reduce shear force damage to the microcapsules. The spinneret's length-to-diameter ratio is 2.5:1 to reduce melt flow resistance. The spinneret is designed as a cross shape.

[0079] A three-dimensional spaced structure is formed using a double-needle bed knitting system. The top, middle, and bottom layers are knitted sequentially through the front and rear needle beds to obtain a multifunctional antistatic knitted fabric. The 20D carbon black-based nylon conductive fibers are embedded with a spacing of 0.7cm. The fabric's warp density is set to 28 rows / 5cm, and the weft density is set to 20 rows / 5cm. Furthermore, the number of stitches in the bottom layer is less than that in the top layer.

[0080] The multifunctional antistatic knitted fabric prepared as described above is used to produce a multifunctional antistatic knitted finished fabric that conforms to human wear through pretreatment, dyeing and finishing processes, and post-finishing processes. The finished product has a weight of 180 g / m². 2The specific preparation method includes the following steps: (1) Pretreatment process The objective is to remove spinning oil, protect the temperature-sensitive structure of PCM phase change microcapsules, and improve wettability.

[0081] A combined process of plasma activation technology and ultrasonic-assisted cleaning is employed.

[0082] Among them, ① plasma activation technology: In a radio frequency plasma device, argon is used as the working gas, and the fiber is treated for 3 minutes under a power of 150W and a pressure of 200Pa. The contact angle of the fiber surface is reduced through the dual action of physical sputtering and chemical etching, while oxygen-containing polar groups are introduced. The processing temperature (≤60℃) ensures the structural integrity of the PCM phase change microcapsules.

[0083] ② Ultrasonic assisted cleaning process: The ultrasonic cleaning tank is used for 10 minutes. A cleaning solution containing 0.5% nonionic surfactant and 0.2% sodium citrate at 45°C is prepared to decompose the oil molecular chain by utilizing the cavitation effect.

[0084] The interval between the two process stages is controlled within 30 minutes, and the fiber moisture content is maintained at 12-15%.

[0085] (2) Dyeing process Two-bath dyeing: The two-bath method is used, first dyeing the intermediate and bottom layers, and then dyeing the surface layer.

[0086] When dyeing the intermediate and bottom layers, 3% (owf) nano-disperse dye was used, pH 5.0, liquor ratio 1:10, 110℃×30 min, and heating rate 1.5℃ / min.

[0087] When dyeing the surface layer, use vinyl sulfone type reactive dye (2% owf) and quaternary ammonium salt modifier for simultaneous treatment.

[0088] The post-dyeing process uses supercritical CO2 water washing (120℃, 20 MPa).

[0089] (3) Finishing process For self-healing coatings, including microencapsulated siloxane prepolymers, with a roll-off rate of 70%, 160°C × 30 s, crack healing rate >90%.

[0090] The multifunctional antistatic knitted fabric prepared in the example was subjected to comprehensive performance testing, and the comprehensive performance test data table is shown in Table 1.

[0091] Table 1. Comprehensive Performance Test Data of Multifunctional Antistatic Knitted Fabrics

[0092] Example 2 A multifunctional antistatic knitted fabric includes a top layer 1, a middle layer 2, and a bottom layer 3 stacked in sequence.

[0093] The outer layer 1 is made of organic conductive fiber and regenerated cellulose yarn with a composite ratio of 98%:2% through a twisting process to form conductive yarn. The conductive yarn is embedded in the honeycomb jacquard structure at a 1cm interval. The organic conductive fiber is carbon black-based polyester conductive fiber, and the regenerated cellulose yarn is lyocell fiber.

[0094] The intermediate layer 2 is made of ammonia-free mechanical elastic fiber, which is composed of PBT and PET. The ammonia-free mechanical elastic fiber adopts a double helix structure and the cross-section of the ammonia-free mechanical elastic fiber is a figure-eight groove.

[0095] The bottom layer 3 uses multifunctional polyester fiber, which consists of PCM phase change microcapsules and cooling masterbatch embedded inside the polyester fiber, accounting for 10% of the total. Among them, the particle size of the PCM phase change microcapsules is ≤5μm, and the particle size of the cooling masterbatch is ≤8μm. The yarn count of the multifunctional polyester fiber is 40D. The cross-section of the multifunctional polyester fiber is cross-shaped, and the surface is grooved.

[0096] The preparation method of the above-mentioned multifunctional antistatic knitted fabric includes the following steps: Step 1: Surface preparation: 98% carbon black-based polyester conductive fibers and 2% lyocell fibers are twisted to form conductive yarn. The twisting parameters are 55 twists / 10cm. The conductive yarn is embedded in the honeycomb jacquard structure at 1cm intervals.

[0097] The preparation method of carbon black-based polyester conductive fiber is as follows: Carbon black is uniformly dispersed in the fiber-forming polymer using a core-sheath composite spinning method, and then the mixture is spun into carbon black-based polyester conductive fiber with a specified yarn count of 20D using spinning equipment. The preparation method of lyocell fiber is as follows: Raw lyocell fiber is obtained through physical or chemical methods, and then the raw lyocell fiber is processed through mixing and opening → drawing and roving → spinning and twisting processes to obtain 32-count lyocell fiber.

[0098] Step 2, Preparation of the intermediate layer: It is made of ammonia-free mechanical elastic fiber. The preparation method is based on PBT and PET composite, adopts a double helix structure, and obtains a specified yarn count of 75D.

[0099] Step 3: Preparation of the bottom layer: Low-temperature blending spinning (185±5℃) yields a specified yarn count of 40D. During the spinning stage, PCM phase change microcapsules (particle size ≤5μm) are mixed into the cooling polyester masterbatch (≤8μm) at a ratio of 10%. The melting temperature is 185±5℃ to protect the temperature-sensitive components of the PCM. The moisture content is controlled to ≤50ppm to prevent microcapsule hydrolysis and rupture. The spinning speed is 3500m / min to reduce shear force damage to the microcapsules. The spinneret has an aspect ratio of 2.5:1 to reduce melt flow resistance. The spinneret is designed as a cross shape.

[0100] A three-dimensional spaced structure is formed using a double-needle bed knitting system. The top, middle, and bottom layers are knitted sequentially through the front and rear needle beds to obtain a multifunctional antistatic knitted fabric. The 20D carbon black-based polyester conductive fibers are embedded with a spacing of 1cm. The fabric's warp density is set to 25 rows / 5cm, and the weft density is set to 31 rows / 5cm. Furthermore, the number of stitches in the bottom layer is less than that in the top layer.

[0101] The multifunctional antistatic knitted fabric prepared above is used to produce a multifunctional antistatic knitted finished fabric that conforms to human wear through pretreatment, dyeing and finishing processes, and post-finishing processes. The finished product has a weight of 200 g / m². 2 The specific preparation method includes the following steps: (1) Pretreatment process The objective is to remove spinning oil, protect the temperature-sensitive structure of PCM phase change microcapsules, and improve wettability.

[0102] A combined process of plasma activation technology and ultrasonic-assisted cleaning is employed.

[0103] Among them, ① plasma activation technology: In a radio frequency plasma device, argon is used as the working gas, and the fiber is treated for 3 minutes under a power of 150W and a pressure of 200Pa. The contact angle of the fiber surface is reduced through the dual action of physical sputtering and chemical etching, while oxygen-containing polar groups are introduced. The processing temperature (≤60℃) ensures the structural integrity of the PCM phase change microcapsules.

[0104] ② Ultrasonic assisted cleaning process: The ultrasonic cleaning tank is used for 20 minutes. A cleaning solution containing 0.5% nonionic surfactant and 0.2% sodium citrate at 45°C is prepared to decompose the oil molecular chain by utilizing the cavitation effect.

[0105] The interval between the two process stages is controlled within 30 minutes, and the fiber moisture content is maintained at 12-15%.

[0106] (2) Dyeing process Two-bath dyeing: The two-bath method is used, first dyeing the intermediate and bottom layers, and then dyeing the surface layer.

[0107] When dyeing the intermediate and bottom layers, 3% (owf) nano-disperse dye was used, pH 5.0, liquor ratio 1:10, 110℃×30 min, and heating rate 1.5℃ / min.

[0108] When dyeing the surface layer, a neutral adsorption process is first used, followed by gradient alkali addition for color fixation.

[0109] The post-dyeing process uses supercritical CO2 water washing (120℃, 20 MPa).

[0110] (3) Finishing process For self-healing coatings, including microencapsulated siloxane prepolymers, with a roll-off rate of 70%, 160°C × 30 s, crack healing rate >90%.

[0111] Example 3 A multifunctional antistatic knitted fabric includes a top layer 1, a middle layer 2, and a bottom layer 3 stacked in sequence.

[0112] The outer layer 1 is made of organic conductive fiber and regenerated cellulose yarn with a composite ratio of 99%:1% through a twisting process to form conductive yarn. The conductive yarn is embedded in the honeycomb jacquard structure at a spacing of 0.8cm. The organic conductive fiber is carbon black-based polyester conductive fiber, and the regenerated cellulose yarn is seaweed fiber.

[0113] The intermediate layer 2 is made of ammonia-free mechanical elastic fiber, which is composed of PBT and PET. The ammonia-free mechanical elastic fiber adopts a double helix structure and the cross-section of the ammonia-free mechanical elastic fiber is a figure-eight groove.

[0114] The bottom layer 3 uses multifunctional polyester fiber, which consists of PCM phase change microcapsules and cooling masterbatch embedded inside the polyester fiber, accounting for 12% of the total. Among them, the particle size of PCM phase change microcapsules is ≤5μm, and the particle size of cooling masterbatch is ≤8μm. The yarn count of the multifunctional polyester fiber is 55D. The cross-section of the multifunctional polyester fiber is cross-shaped, and the surface is grooved.

[0115] The preparation method of the above-mentioned multifunctional antistatic knitted fabric includes the following steps: Step 1: Surface preparation: 99% carbon black-based polyester conductive fiber and 1% seaweed fiber are twisted together to form conductive yarn. The twisting parameters are 55 twists / 10cm. The conductive yarn is embedded in the honeycomb jacquard structure at a spacing of 0.8cm.

[0116] The preparation method of carbon black-based polyester conductive fiber is as follows: Carbon black is uniformly dispersed in the fiber-forming polymer using a core-sheath composite spinning method, and then the mixture is spun into carbon black-based polyester conductive fiber with a specified yarn count of 20D using spinning equipment. The preparation method of seaweed fiber is as follows: Raw seaweed fiber is obtained through physical or chemical methods, and then the raw seaweed fiber is processed through mixing and opening → drawing and roving → spinning and twisting processes to obtain 36-count seaweed fiber.

[0117] Step 2, Preparation of the intermediate layer: It is made of ammonia-free mechanical elastic fiber. The preparation method is based on PBT and PET composite, adopts a double helix structure, and obtains a specified yarn count of 55D.

[0118] Step 3: Preparation of the bottom layer: Low-temperature blending spinning (185±5℃) yields a specified yarn count of 55D. During the spinning stage, PCM phase change microcapsules (particle size ≤5μm) are mixed into the cooling polyester masterbatch (≤8μm) at a ratio of 12%. The melting temperature is 185±5℃ to protect the temperature-sensitive components of the PCM. The moisture content is controlled to ≤50ppm to prevent microcapsule hydrolysis and rupture. The spinning speed is 3000m / min to reduce shear force damage to the microcapsules. The spinneret has an aspect ratio of 2.5:1 to reduce melt flow resistance. The spinneret is designed as a cross shape.

[0119] A three-dimensional spaced structure is formed using a double-needle bed knitting system. The top, middle, and bottom layers are knitted sequentially through the front and rear needle beds to obtain a multifunctional antistatic knitted fabric. The 20D carbon black-based polyester conductive fibers are embedded with a spacing of 0.8cm. The fabric's warp density is set to 40 rows / 5cm, and the weft density is set to 18 rows / 5cm. Furthermore, the number of stitches in the bottom layer is less than that in the top layer.

[0120] The multifunctional antistatic knitted fabric prepared as described above is used to produce a multifunctional antistatic knitted finished fabric that conforms to human wear through pretreatment, dyeing and finishing processes, and post-finishing processes. The finished product has a weight of 180 g / m². 2 The specific preparation method includes the following steps: (1) Pretreatment process The objective is to remove spinning oil, protect the temperature-sensitive structure of PCM phase change microcapsules, and improve wettability.

[0121] A combined process of plasma activation technology and ultrasonic-assisted cleaning is employed.

[0122] Among them, ① plasma activation technology: In a radio frequency plasma device, argon is used as the working gas, and the fiber is treated for 3 minutes under a power of 150W and a pressure of 200Pa. The contact angle of the fiber surface is reduced through the dual action of physical sputtering and chemical etching, while oxygen-containing polar groups are introduced. The processing temperature (≤60℃) ensures the structural integrity of the PCM phase change microcapsules.

[0123] ② Ultrasonic assisted cleaning process: The ultrasonic cleaning tank is used for 15 minutes. A cleaning solution containing 0.5% nonionic surfactant and 0.2% sodium citrate at 45°C is prepared to decompose the oil molecular chain by utilizing the cavitation effect.

[0124] The interval between the two process stages is controlled within 30 minutes, and the fiber moisture content is maintained at 12-15%.

[0125] (2) Dyeing process Two-bath dyeing: The two-bath method is used, first dyeing the intermediate and bottom layers, and then dyeing the surface layer.

[0126] When dyeing the intermediate and bottom layers, 3% (owf) nano-disperse dye was used, pH 5.0, liquor ratio 1:10, 110℃×30 min, and heating rate 1.5℃ / min.

[0127] When dyeing the surface layer, vinyl sulfone type reactive dye (2% owf) is used for simultaneous treatment with quaternary ammonium salt modifier, followed by neutral adsorption and then gradient alkali fixation.

[0128] The post-dyeing process uses supercritical CO2 water washing (120℃, 20 MPa).

[0129] (3) Finishing process For self-healing coatings, including microencapsulated siloxane prepolymers, with a roll-off rate of 70%, 160°C × 30 s, crack healing rate >90%.

[0130] This application achieves significant differences in the number and specific surface area of ​​moisture-absorbing and wicking fibers per unit volume between the inner and outer layers through innovative raw materials, optimized organizational structure, different configurations of different raw material components in the layered structure, and reasonable dyeing and finishing processes. This results in fabrics that adaptively adjust personal thermal and moisture comfort, provide dynamic temperature control, and have high light fastness. It overcomes the problems of traditional summer antistatic knitted fabrics, such as stuffiness, insufficient comfort, limited functionality, poor antibacterial durability, and poor light fastness. This meets the safety protection needs of industrial workers while improving wearing comfort and practicality.

[0131] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0132] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

Claims

1. A multifunctional antistatic knitted fabric, characterized in that, The fabric is a three-dimensional breathable structure formed by a double needle bed knitting system. Specifically, the three-dimensional breathable structure is a honeycomb jacquard structure that runs through the entire fabric, including a top layer (1), a middle layer (2), and a bottom layer (3) that are stacked in sequence; wherein, the bottom layer (3) is the side that comes into contact with the skin. The surface layer (1) is an antistatic and antibacterial layer; The intermediate layer (2) is an elastic quick-drying hollow layer; The bottom layer (3) is a dynamic temperature control layer.

2. The multifunctional antistatic knitted fabric according to claim 1, characterized in that, The surface layer (1) is made of organic conductive fibers and regenerated cellulose yarn through a twisting process to form conductive yarn, which is embedded in the honeycomb jacquard structure at a spacing of 0.7-1.0 cm. The composite ratio of the organic conductive fiber and the regenerated cellulose yarn is 97%-99% : 1%-3%; The organic conductive fiber includes carbon black-based nylon conductive fiber or carbon black-based polyester conductive fiber. The regenerated cellulose yarn includes one or more of bamboo fiber, lyocell fiber, and seaweed fiber.

3. The multifunctional antistatic knitted fabric according to claim 1, characterized in that, The intermediate layer (2) is made of ammonia-free mechanical elastic fiber, which is composed of PBT and PET composite; The ammonia-free mechanical elastic fiber adopts a double helix structure, and the cross-section of the ammonia-free mechanical elastic fiber has a figure-eight groove.

4. The multifunctional antistatic knitted fabric according to claim 1, characterized in that, The bottom layer (3) is made of multifunctional polyester fiber, which is polyester fiber with PCM phase change microcapsules and cooling masterbatch embedded inside, accounting for 8-12%; wherein, the particle size of PCM phase change microcapsules is ≤5μm, and the particle size of cooling masterbatch is ≤8μm; the yarn count of the multifunctional polyester fiber is 40D~75D. The cross-section of the multifunctional polyester fiber is cross-shaped, and the surface is provided with grooves.

5. The multifunctional antistatic knitted fabric according to claim 4, characterized in that, The multifunctional polyester fiber is prepared by low-temperature co-spinning. During the spinning stage, segmented temperature control is adopted for the masterbatch pre-melting zone, blending zone, and spinneret. Specifically, the masterbatch pre-melting zone is 165-175℃, the blending zone is 180-190℃, and the spinneret is 185-195℃. The moisture content is controlled to be ≤50ppm, the spinning speed is 2700-3500m / min, the spinneret length-to-diameter ratio is 2.5:1, and the spinneret is set to a cross shape.

6. The multifunctional antistatic knitted fabric according to claim 1, characterized in that, The multifunctional antistatic knitted fabric has a warp density of 25-40 rows / 5cm and a weft density of 18-31 rows / 5cm; the organic conductive fibers are embedded in the multifunctional antistatic knitted fabric at a spacing of 0.7-1.0cm.

7. The multifunctional antistatic knitted fabric according to claim 1, characterized in that, The number of fabric loops in the bottom layer (3) is less than the number of fabric loops in the top layer (1).

8. A method for manufacturing a multifunctional antistatic knitted finished fabric based on the multifunctional antistatic knitted fabric as described in any one of claims 1-7, characterized in that, include: The pretreatment process aims to remove spinning oil, protect the temperature-sensitive structure of PCM phase change microcapsules, and improve wettability. The dyeing process uses a two-bath dyeing method, first dyeing the intermediate layer (2) and the bottom layer (3), and then dyeing the surface layer (1); Post-processing for self-healing coatings, including microencapsulated siloxane prepolymers, with a roll-off rate of 70%, 160℃×30 s, and a crack healing rate of >90%.

9. The method for manufacturing the multifunctional antistatic knitted fabric according to claim 8, characterized in that, In the dyeing process, when dyeing the intermediate layer (2) and the bottom layer (3), 3% (owf) of nano-disperse dye is used, pH 5.0, liquor ratio 1:10, 110℃×30 min, and the heating rate is 1.5℃ / min.

10. The method for manufacturing the multifunctional antistatic knitted fabric according to claim 8, characterized in that, In the dyeing process, when dyeing the surface layer (1), vinyl sulfone type reactive dye (2% owf) is used for simultaneous treatment with quaternary ammonium salt modifier and / or neutral adsorption is used followed by alkali fixation.

Images