Active warm-keeping functional fiber as well as preparation method and application thereof

Abstract

The invention provides an active warm-keeping functional fiber and a preparation method and application thereof, and belongs to the technical field of functional fibers. Comprising a matrix fiber, the matrix fiber is doped with a nano montmorillonite-conductive polymer composite material, and the doping amount of the nano montmorillonite-conductive polymer composite material in the matrix fiber is 1-3%; in the nano-montmorillonite-conductive polymer composite material, the mass ratio of nano-montmorillonite to a conductive polymer is (1: 9)-(9: 1). The functional fiber has hydrophilic, antistatic and far-infrared emission functions, and is a preferable thermal insulation material.

Description

Technical Field

[0001] The present application relates to an active thermal insulation functional fiber and a preparation method and application thereof, belonging to the technical field of functional fibers. Background Art

[0002] With the growing consumer demand for functional textiles, knitted fabrics that combine comfort, health protection, and intelligent features have become a research hotspot in the textile field. Traditional thermal insulation fabrics often rely on increasing thickness or fluffiness to improve thermal insulation, but such methods often result in heavy fabrics with poor breathability, making it difficult to meet the needs of modern clothing for lightweight and multifunctionality. Although the introduction of technologies such as far-infrared emitting materials and antistatic finishing agents in recent years has provided new directions for the development of functional fabrics, existing products still have the following significant shortcomings:

[0003] 1) Functional singularity and performance balance

[0004] Existing knitted fleece fabrics often focus on a single function (such as warmth or antistatic properties), making it difficult to achieve synergistic benefits of hydrophilicity, antistatic properties, and far-infrared warmth. For example, while some far-infrared ceramic powder materials can improve warmth retention, their hydrophobic properties can easily lead to reduced moisture absorption, affecting wearing comfort. Conventional antistatic agents (such as quaternary ammonium salts) are easily lost after repeated washing, lack durability, and can reduce emission efficiency due to charge interference when compounded with far-infrared materials.

[0005] 2) The contradiction between thinness and functional durability

[0006] To achieve lightweighting, existing technologies often compromise by reducing fabric weight or reducing the amount of functional additives added, resulting in unstable far-infrared emissivity (typically below 75%) or insufficient warmth retention. Furthermore, thin fabrics have shortcomings in pilling resistance and abrasion resistance, limiting their application in high-frequency wear scenarios.

[0007] 3) Limitations of processing technology

[0008] Traditional functional finishing methods often rely on step-by-step impregnation or coating, which is not only cumbersome and energy-intensive, but also prone to uneven distribution of functional components. For example, far-infrared sizing can easily clog fabric pores after application, leading to decreased hydrophilicity; while high-temperature curing processes can damage the fiber structure, affecting the fabric's softness and elastic recovery.

[0009] 4) Environmental friendliness defects

[0010] Some antistatic finishing agents contain heavy metals or difficult-to-degrade organic matter, which do not meet green textile standards; at the same time, the bonding strength between functional additives and the substrate is insufficient, resulting in an increased risk of microplastic release during the washing process, making it difficult to meet sustainable development requirements.

[0011] In response to the above problems, developing a technology for preparing yarns with structural design and composite functions has become a key direction to break through the technical bottlenecks in the industry. Summary of the Invention

[0012] In view of this, the first purpose of the applicant is to provide a functional fiber that actively keeps warm. The functional fiber that actively keeps warm has both hydrophilic and antistatic properties and far-infrared emission properties. While maintaining the light and thin characteristics of the corresponding fabric, it can also achieve efficient integration of hydrophilic, antistatic and far-infrared active warming functions.

[0013] Specifically, this application is implemented through the following solutions:

[0014] A functional fiber for active thermal insulation comprises a matrix, wherein the matrix is ​​doped with a nano-montmorillonite-conductive polymer composite material, wherein the doping amount of the nano-montmorillonite-conductive polymer composite material in the matrix fiber is 1-3%; and in the nano-montmorillonite-conductive polymer composite material, the mass ratio of the nano-montmorillonite to the conductive polymer is 1:9-9:1.

[0015] By introducing a nano-montmorillonite-conductive polymer composite into the matrix, the unique microporous structure and composition of the nano-montmorillonite-conductive polymer composite fully absorbs heat dissipated by the human body, causing the material to heat up. Simultaneously, it radiates higher-energy far-infrared radiation, enhancing warmth and promoting blood circulation through the temperature-rise effect. The conductive polymer is a highly conductive material, and since it is polymerized within the montmorillonite as a template, its temperature resistance and stability are improved, preventing performance degradation caused by migration during washing. The matrix and the nano-montmorillonite-conductive polymer composite impart antistatic and far-infrared properties to the fiber. The nano-montmorillonite-conductive polymer composite is added to the matrix fiber at a dosage of 1-3%. Too low a dosage of the nano-montmorillonite-conductive polymer composite can compromise the fiber's hydrophilic, antistatic, and far-infrared emitting active warmth properties. Too high a dosage can impair spinning performance and cause the powder to agglomerate.

[0016] Furthermore, as a preference:

[0017] In the nano-montmorillonite-conductive polymer composite, the mass ratio of nano-montmorillonite to conductive polymer is 1 to 4:1. As the proportion of nano-montmorillonite increases, the antistatic performance of the nano-montmorillonite-conductive polymer composite decreases slightly, while the far-infrared performance significantly improves. However, when the proportion of nano-montmorillonite further increases, the antistatic performance decreases, while the far-infrared performance does not improve. More preferably, the mass ratio of nano-montmorillonite to conductive polymer in the nano-montmorillonite-conductive polymer composite is 2:1.

[0018] The conductive polymer is an ion conductive polymer, more preferably, the conductive polymer is a PEO alkali metal system or a polyether anion double salt system. More preferably, in the conductive polymer, the molar ratio of the polymer to the alkali metal or salt is 0.5 to 5.5:100.

[0019] The matrix fiber is PET fiber.

[0020] The particle size of the nano-montmorillonite-conductive polymer composite material is 60 to 500 nm, preferably 60 to 400 nm, and most preferably 60 to 300 nm. The particle size of the powder material affects the spinning performance. If the particle size is too large, the yarn will break, drift, and the spinning will be uneven.

[0021] The nano-montmorillonite is sodium-based modified montmorillonite.

[0022] The second object of the applicant is to provide a method for preparing the above-mentioned active warmth-maintaining functional fiber, which comprises the following steps:

[0023] Step 1: immersing montmorillonite in a sodium hydroxide solution, stirring, grinding, and drying to obtain nano-montmorillonite powder;

[0024] Step 2: Add the conductive polymer to the organic solvent and stir thoroughly to form a sol, then add the nano-montmorillonite powder and continue stirring. Under the induction of ion polarization, the conductive ion polymer will pass through the micropores of the nano-montmorillonite or entangle with it to form a gel. The gel is freeze-dried, and the dried product is subjected to high-temperature treatment under oxygen-free conditions and then ground to obtain a nano-montmorillonite-conductive polymer composite material. The high-temperature treatment temperature is 180-300°C.

[0025] Step three: premixing the nano-montmorillonite-conductive polymer composite material with the matrix material, extruding and granulating to obtain a masterbatch, and melt-spinning the masterbatch and the matrix material to obtain a functional fiber.

[0026] The above process first adopts the intercalation polymerization method to prepare the nano-montmorillonite-conductive polymer composite material, and then blends, extrudes granulation and melts and spins to obtain functional fibers that can actively keep warm.

[0027] Preferred:

[0028] In step 1, the stirring rate is 100-800 r / m.

[0029] After being stirred evenly, the mixture is added into a liquid phase grinding device for grinding. During the grinding process, as the particle size decreases, the surface of the montmorillonite is gradually hydroxylated and reacts with sodium hydroxide. After drying, sodium-based nano-montmorillonite is obtained.

[0030] In step 2, high temperature treatment is performed at 200-220°C.

[0031] In step three,

[0032] Premixing can be carried out in a premixer at a speed of 100 to 300 rpm.

[0033] Extrusion granulation can be carried out using a twin-screw extruder at a temperature of 260-280°C.

[0034] The melt spinning temperature is 270-290℃. In melt spinning, the matrix material is fed by a single screw, and the masterbatch is fed separately by weight. The amount of masterbatch added is 3-10%.

[0035] The fineness of functional fibers is 0.5 to 5D.

[0036] The third objective of the applicant is to provide the use of the aforementioned functional fibers in lightweight knitted velvet fabrics, characterized in that the functional fibers are used in the base or top yarns of the lightweight knitted velvet fabrics, with the functional fibers comprising 10-100% of the base or top yarns. By incorporating fibers containing nano-montmorillonite-conductive polymer composite functional materials, velvet fabrics for home textiles and apparel products are endowed with stable, permanent hydrophilic, antistatic, and far-infrared emitting active warmth-retaining properties, thus avoiding the drawback of weakening the antibacterial and far-infrared emitting properties of the fabrics due to immersion in water or washing.

[0037] Preferably, the functional fiber accounts for 40-80% of the base or top yarn. As the proportion of hydrophilic, antistatic, and far-infrared emitting active thermal insulation fibers in the top or bottom yarn increases, the hydrophilic, antistatic, and far-infrared emitting active thermal insulation functions are significantly improved. However, when the proportion of the functional fiber in the top or bottom yarn reaches 80%, it can basically cover the entire fabric. Further increasing the proportion does not significantly change the hydrophilic, antistatic, and far-infrared emitting active thermal insulation functions.

[0038] The specific application process is as follows:

[0039] Functional fibers are mixed with polyester fibers. Part of the polyester fibers and functional fibers constitute the surface yarn / base yarn, and the remaining polyester fibers are used as the base yarn / surface yarn. Through weaving, dyeing, shaping, raising, shaping and rolling, a light and thin knitted velvet fabric is obtained.

[0040] In the weaving process, the grey fabric is woven on a weft knitting circular machine using 22 needles in two rows. The threading method is three threads and one empty thread, that is, one empty thread is passed through after every three yarns. The bottom yarn accounts for 30-50% of the fabric weight, the surface yarn accounts for 40-60%, and the middle yarn accounts for 10%. The finished product weighs 80-120g / m 2 .

[0041] Preferably, the width is 30 inches, the surface yarn is 150D / 288F DTY semi-gloss flat polyester, the bottom yarn is 100D / 96F high-elastic polyester, and the binding yarn is 100D / 96F high-elastic polyester. The bottom yarn accounts for 40% of the fabric weight, the surface yarn accounts for 50% of the fabric weight, and the binding yarn accounts for 10% of the fabric weight.

[0042] In the dyeing process, the bath ratio is controlled at 1:10-1:20, glacial acetic acid is added after the cloth is fed, the concentration of glacial acetic acid is 0.2-1 g / L, and the working bath pH is 3-5;

[0043] Dyeing is divided into five stages:

[0044] The first stage: heating to 125-135℃, heating rate of 1-2℃ / min, keeping warm for 30-50min;

[0045] The second stage: cool down to 75-85℃ at a rate of 1.5-2.5℃ / min, keep warm for 10 minutes, add soda ash and hydrosulfite, the dosage of which is 2-4g / L;

[0046] The third stage: continue to cool to 35-45℃, controlling the rate at 1-2℃ / min, and then drain;

[0047] The fourth stage: continue to add glacial acetic acid to the water, the concentration of glacial acetic acid is 0.2-1g / L, and adjust the fabric surface to neutral;

[0048] The fifth stage: overflow water washing and batch water washing, the time is 10 to 30 minutes.

[0049] The pigments used for dyeing include disperse dyes, such as disperse red and disperse gray.

[0050] The dyeing adopts a high-temperature and high-pressure overflow dyeing machine.

[0051] In the shaping process, the temperature is 200-230° C., and the processing speed is 25-30 m / min; more preferably, the temperature is 210° C., and the processing speed is 30 m / min.

[0052] The raising process is continuous raising process.

[0053] In the shaping roller softening process, the temperature is 170-220° C., the processing speed is 20-30 m / min, 10-30 g / L of ternary copolymerized amino silicone oil is added to the shaping roller, and the roller pressure is controlled at 0.35-0.4 MPa.

[0054] The post-processing involves combing and trimming the fleece using a calendering machine and shearing machine. The calendering machine's rollers are operated at a temperature of 160-190°C and a speed of 750-950 rpm. The raised fleece is further combed and trimmed using the calendering machine and shearing machine. The calendering machine uses angular rollers rotating at a high speed of approximately 170°C to comb and trim the fleece, ensuring uniform orientation and angle. The shearing machine then uses a combination of circular and flat blades to trim the fleece.

[0055] The above application method can design the fabric structure through a unique weaving process, giving it a unique appearance and feel, while maintaining anti-static and warmth-retaining functions on the basis of being lightweight and thin.

[0056] Compared with the existing technology, the technical solution of the present invention has the following beneficial effects:

[0057] The functional fibers and velvet fabrics provided by the present invention have hydrophilic antistatic and far-infrared emitting active warming functions, and their functions are based on the incorporation of nano-montmorillonite-conductive polymer composite functional materials into high molecular polymer fibers. They can not only ensure the long-term antistatic and far-infrared warming effects of the fibers and velvet fabrics, but also avoid defects such as weakening of the antistatic and far-infrared warming functions of the fabrics due to immersion in water or washing. In addition, a unique weft knitting process is used to design light and thin knitted velvet fabrics with a special appearance and feel, so that consumers can take into account both health and fashion while using textiles. They are particularly suitable for the development of home textiles and clothing products.

[0058] The preparation method of the fiber with hydrophilic antistatic and far-infrared emitting active warmth-keeping functions and the light and thin knitted velvet fabric of the present invention is simple, the raw material cost is low, and the industrial production is satisfied. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0060] Figure 1 SEM image of the functional fiber for active warmth preservation in this application;

[0061] Figure 2 This is a schematic diagram of the appearance of the knitted velvet fabric prepared in this application. DETAILED DESCRIPTION

[0062] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, the technical solutions in the embodiments of this application will be further described in detail below in conjunction with the drawings in the embodiments of this application. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit the technical solutions of this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of this application.

[0063] This embodiment is divided into two parts. Examples 1 to 9 provide functional fibers that can actively retain warmth, while Examples 10 to 18 provide applications of functional fibers, namely, weaving them into lightweight, knitted fleece fabrics. Each solution is described below with reference to specific examples.

[0064] Example 1

[0065] This embodiment provides a functional fiber that can actively keep warm and has both hydrophilic antistatic and far-infrared emitting functions.

[0066] The preparation steps are as follows:

[0067] 1) Preparation of sodium-based montmorillonite nanopowder: Montmorillonite was dissolved in a 1 mol / L sodium hydroxide solution with a montmorillonite mass fraction of 10%. The mixture was stirred at a rate of 600 rpm. After uniform stirring, the mixture was added to a liquid phase grinding apparatus for grinding. During the grinding process, as the particle size decreased, the surface of the montmorillonite gradually became hydroxylated and reacted with sodium hydroxide. After drying, sodium-based nano-montmorillonite was obtained. The drying temperature was 140°C, the drying time was 4 hours, and the particle size was 80 nm.

[0068] 2) Nano-montmorillonite-conductive polymer composite material: Sodium-based nano-montmorillonite is added to a polymer poly (3,4-ethylenedioxythiophene) (PEDOT)-lithium ion conductive ion polymer solution and continuously stirred. Under the induction of ion polarization, the conductive ion polymer will pass through the micropores of the nano-montmorillonite or entangle with it to form a gel. The gel is dried and the product obtained after drying is subjected to high-temperature treatment at 180°C under anaerobic conditions.

[0069] The mass ratio of sodium-based nano-montmorillonite to ion-conductive polymer is 1:9.

[0070] In the ion-conducting polymer, the molar ratio of poly(3,4-ethylenedioxythiophene) to lithium ions is 5:100.

[0071] 3) Antistatic Far-Infrared Polyester Fiber: Sodium-based nano-montmorillonite-conductive ion polymer was premixed with PET resin powder at a 30% mass ratio at a premixer speed of 200 rpm. Functional PET masterbatch was extruded and pelletized through a twin-screw extruder at a twin-screw processing temperature of 270°C. PET chips and the masterbatch were then co-spun to produce functional fibers. The PET chips were fed through a single-screw extruder at a screw temperature of 275°C. The masterbatch was fed separately by weight at a masterbatch addition level of 5% at a spinning temperature of 285°C. The resulting fiber had a specification of 150D / 288F and contained a sodium-based nano-montmorillonite-conductive ion polymer composite material content of 1.5% by weight.

[0072] The fiber spinning was normal, but during the dyeing experiment, it was found that ion conductive polymer migrated into the dye cup when dyeing at 130℃. This was due to the excessively high content of conductive polymer in the preparation of nano-montmorillonite-conductive polymer composite materials.

[0073] Example 2

[0074] This embodiment provides a functional fiber that can actively keep warm and has both hydrophilic antistatic and far-infrared emitting functions.

[0075] The preparation steps are as follows:

[0076] 1) Preparation of sodium-based montmorillonite nanopowder: Montmorillonite was dissolved in a 1 mol / L sodium hydroxide solution with a montmorillonite mass fraction of 10%. The mixture was stirred at a rate of 600 rpm. After uniform stirring, the mixture was added to a liquid phase grinding apparatus for grinding. During the grinding process, as the particle size decreased, the surface of the montmorillonite gradually became hydroxylated and reacted with sodium hydroxide. After drying, sodium-based nano-montmorillonite was obtained. The drying temperature was 140°C, the drying time was 4 hours, and the particle size was 80 nm.

[0077] 2) Nano-montmorillonite-conductive polymer composite material: Sodium-based nano-montmorillonite is added to a polymer poly (3,4-ethylenedioxythiophene) (PEDOT)-lithium ion conductive ion polymer solution and continuously stirred. Under the induction of ion polarization, the conductive ion polymer will pass through the micropores of the nano-montmorillonite or entangle with it to form a gel. The gel is dried and the product obtained after drying is subjected to high-temperature treatment at 180°C under anaerobic conditions.

[0078] The mass ratio of sodium-based nano-montmorillonite to ion-conductive polymer is 1:4.

[0079] In the ion-conducting polymer, the molar ratio of poly(3,4-ethylenedioxythiophene) to lithium ions is 5:100.

[0080] 3) Antistatic Far-Infrared Polyester Fiber: Sodium-based nano-montmorillonite and conductive ion polymer were premixed with PET resin powder at a 30% mass ratio at a premixer speed of 200 rpm. PET masterbatch with antistatic far-infrared properties was produced through a twin-screw extruder at a processing temperature of 270°C. PET chips and the masterbatch were then co-spun to produce functional fibers. The PET chips were fed through a single-screw extruder at a screw temperature of 275°C. The masterbatch was fed separately by weight at a 5% masterbatch addition, and the spinning temperature was 285°C. The resulting fiber had a specification of 150D / 288F, and the mass content of the sodium-based nano-montmorillonite-conductive ion polymer composite material was 1.5%.

[0081] The fiber spinning was normal, but during the dyeing experiment, it was found that ion conductive polymer still migrated into the dye cup when dyeing at 130℃. This was due to the excessively high content of conductive polymer in the preparation of nano-montmorillonite-conductive polymer composite materials.

[0082] Example 3

[0083] This embodiment provides a functional fiber that can actively keep warm and has both hydrophilic antistatic and far-infrared emitting functions.

[0084] The preparation steps are as follows:

[0085] 1) Preparation of sodium-based montmorillonite nanopowder: Montmorillonite was dissolved in a 1 mol / L sodium hydroxide solution with a montmorillonite mass fraction of 10%. The mixture was stirred at a rate of 600 rpm. After uniform stirring, the mixture was added to a liquid phase grinding apparatus for grinding. During the grinding process, as the particle size decreased, the surface of the montmorillonite gradually became hydroxylated and reacted with sodium hydroxide. After drying, sodium-based nano-montmorillonite was obtained. The drying temperature was 140°C, the drying time was 4 hours, and the particle size was 80 nm.

[0086] 2) Nano-montmorillonite-conductive polymer composite material: Sodium-based nano-montmorillonite is added to a polymer poly (3,4-ethylenedioxythiophene) (PEDOT)-lithium ion conductive ion polymer solution and continuously stirred. Under the induction of ion polarization, the conductive ion polymer will pass through the micropores of the nano-montmorillonite or entangle with it to form a gel. The gel is dried and the product obtained after drying is subjected to high-temperature treatment at 180°C under anaerobic conditions.

[0087] The mass ratio of sodium-based nano-montmorillonite to ion-conductive polymer is 1:1.

[0088] In the ion-conducting polymer, the molar ratio of poly(3,4-ethylenedioxythiophene) to lithium ions is 5:100.

[0089] 3) Antistatic Far-Infrared Polyester Fiber: Sodium-based nano-montmorillonite and conductive ion polymer were premixed with PET resin powder at a 30% mass ratio at a premixer speed of 200 rpm. PET masterbatch with antistatic far-infrared properties was produced through a twin-screw extruder at a processing temperature of 270°C. PET chips and the masterbatch were then co-spun to produce functional fibers. The PET chips were fed through a single-screw extruder at a screw temperature of 275°C. The masterbatch was fed separately by weight at a 5% masterbatch addition, and the spinning temperature was 285°C. The resulting fiber had a specification of 150D / 288F, and the mass content of the sodium-based nano-montmorillonite-conductive ion polymer composite material was 1.5%.

[0090] The fiber spinning is normal. In the dyeing experiment, the dyeing is normal when dyed at 130℃ in the dye cup, and the mechanical properties are normal.

[0091] Example 4

[0092] This embodiment provides a functional fiber that can actively keep warm and has both hydrophilic antistatic and far-infrared emitting functions.

[0093] The preparation steps are as follows:

[0094] 1) Preparation of sodium-based montmorillonite nanopowder: Montmorillonite was dissolved in a 1 mol / L sodium hydroxide solution with a montmorillonite mass fraction of 10%. The mixture was stirred at a rate of 600 rpm. After uniform stirring, the mixture was added to a liquid phase grinding apparatus for grinding. During the grinding process, as the particle size decreased, the surface of the montmorillonite gradually became hydroxylated and reacted with sodium hydroxide. After drying, sodium-based nano-montmorillonite was obtained. The drying temperature was 140°C, the drying time was 4 hours, and the particle size was 80 nm.

[0095] 2) Nano-montmorillonite-conductive polymer composite material: Sodium-based nano-montmorillonite is added to a polymer poly (3,4-ethylenedioxythiophene) (PEDOT)-lithium ion conductive ion polymer solution and continuously stirred. Under the induction of ion polarization, the conductive ion polymer will pass through the micropores of the nano-montmorillonite or entangle with it to form a gel. The gel is dried and the product obtained after drying is subjected to high-temperature treatment at 180°C under anaerobic conditions.

[0096] The mass ratio of sodium-based nano-montmorillonite to ion-conductive polymer is 2:1.

[0097] In the ion-conducting polymer, the molar ratio of poly(3,4-ethylenedioxythiophene) to lithium ions is 5:100.

[0098] 3) Antistatic Far-Infrared Polyester Fiber: Sodium-based nano-montmorillonite and conductive ion polymer were premixed with PET resin powder at a 30% mass ratio at a premixer speed of 200 rpm. PET masterbatch with antistatic far-infrared properties was produced through a twin-screw extruder at a processing temperature of 270°C. PET chips and the masterbatch were then co-spun to produce functional fibers. The PET chips were fed through a single-screw extruder at a screw temperature of 275°C. The masterbatch was fed separately by weight at a 5% masterbatch addition, and the spinning temperature was 285°C. The resulting fiber had a specification of 150D / 288F, and the mass content of the sodium-based nano-montmorillonite-conductive ion polymer composite material was 1.5%.

[0099] The fiber spinning is normal. In the dyeing experiment, the dyeing is normal when dyed at 130℃ in the dye cup, and the mechanical properties are normal.

[0100] Example 5

[0101] This embodiment provides a functional fiber that can actively keep warm and has both hydrophilic antistatic and far-infrared emitting functions.

[0102] The preparation steps are as follows:

[0103] 1) Preparation of sodium-based montmorillonite nanopowder: Montmorillonite was dissolved in a 1 mol / L sodium hydroxide solution with a montmorillonite mass fraction of 10%. The mixture was stirred at a rate of 600 rpm. After uniform stirring, the mixture was added to a liquid phase grinding apparatus for grinding. During the grinding process, as the particle size decreased, the surface of the montmorillonite gradually became hydroxylated and reacted with sodium hydroxide. After drying, sodium-based nano-montmorillonite was obtained. The drying temperature was 140°C, the drying time was 4 hours, and the particle size was 80 nm.

[0104] 2) Nano-montmorillonite-conductive polymer composite material: Sodium-based nano-montmorillonite is added to a polymer poly (3,4-ethylenedioxythiophene) (PEDOT)-lithium ion conductive ion polymer solution and continuously stirred. Under the induction of ion polarization, the conductive ion polymer will pass through the micropores of the nano-montmorillonite or entangle with it to form a gel. The gel is dried and the product obtained after drying is subjected to high-temperature treatment at 180°C under anaerobic conditions.

[0105] The mass ratio of sodium-based nano-montmorillonite to ion-conductive polymer is 4:1.

[0106] In the ion-conducting polymer, the molar ratio of poly(3,4-ethylenedioxythiophene) to lithium ions is 5:100.

[0107] 3) Antistatic Far-Infrared Polyester Fiber: Sodium-based nano-montmorillonite and conductive ion polymer were premixed with PET resin powder at a 30% mass ratio at a premixer speed of 200 rpm. PET masterbatch with antistatic far-infrared properties was produced through a twin-screw extruder at a processing temperature of 270°C. PET chips and the masterbatch were then co-spun to produce functional fibers. The PET chips were fed through a single-screw extruder at a screw temperature of 275°C. The masterbatch was fed separately by weight at a 5% masterbatch addition, and the spinning temperature was 285°C. The resulting fiber had a specification of 150D / 288F, and the mass content of the sodium-based nano-montmorillonite-conductive ion polymer composite material was 1.5%.

[0108] The fiber spinning is normal. In the dyeing experiment, the dyeing is normal when dyed at 130℃ in the dye cup, and the mechanical properties are normal.

[0109] Example 6

[0110] This embodiment provides a functional fiber that can actively keep warm and has both hydrophilic antistatic and far-infrared emitting functions.

[0111] The preparation steps are as follows:

[0112] 1) Preparation of sodium-based montmorillonite nanopowder: Montmorillonite was dissolved in a 1 mol / L sodium hydroxide solution with a montmorillonite mass fraction of 10%. The mixture was stirred at a rate of 600 rpm. After uniform stirring, the mixture was added to a liquid phase grinding apparatus for grinding. During the grinding process, as the particle size decreased, the surface of the montmorillonite gradually became hydroxylated and reacted with sodium hydroxide. After drying, sodium-based nano-montmorillonite was obtained. The drying temperature was 140°C, the drying time was 4 hours, and the particle size was 80 nm.

[0113] 2) Nano-montmorillonite-conductive polymer composite material: Sodium-based nano-montmorillonite is added to a polymer poly (3,4-ethylenedioxythiophene) (PEDOT)-lithium ion conductive ion polymer solution and continuously stirred. Under the induction of ion polarization, the conductive ion polymer will pass through the micropores of the nano-montmorillonite or entangle with it to form a gel. The gel is dried and the product obtained after drying is subjected to high-temperature treatment at 180°C under anaerobic conditions.

[0114] The mass ratio of sodium-based nano-montmorillonite to ion-conductive polymer is 9:1.

[0115] In the ion-conducting polymer, the molar ratio of poly(3,4-ethylenedioxythiophene) to lithium ions is 5:100.

[0116] 3) Antistatic Far-Infrared Polyester Fiber: Sodium-based nano-montmorillonite and conductive ion polymer were premixed with PET resin powder at a 30% mass ratio at a premixer speed of 200 rpm. PET masterbatch with antistatic far-infrared properties was produced through a twin-screw extruder at a processing temperature of 270°C. PET chips and the masterbatch were then co-spun to produce functional fibers. The PET chips were fed through a single-screw extruder at a screw temperature of 275°C. The masterbatch was fed separately by weight at a 5% masterbatch addition, and the spinning temperature was 285°C. The resulting fiber had a specification of 150D / 288F, and the mass content of the sodium-based nano-montmorillonite-conductive ion polymer composite material was 1.5%.

[0117] The fiber spinning is normal. In the dyeing experiment, the dyeing is normal when dyed at 130℃ in the dye cup, and the mechanical properties are normal.

[0118] The antistatic function of garter fabrics woven from the fiber samples of Examples 3 to 6 was compared and tested. Under the same conditions, the mass ratio of sodium-based nano-montmorillonite to ion-conductive polymer was preferably 1 to 4:1, and the best effect was achieved when the mass ratio of sodium-based nano-montmorillonite to ion-conductive polymer was 2:1 (i.e., Example 4).

[0119] Example 7

[0120] This embodiment provides a functional fiber that can actively keep warm and has both hydrophilic antistatic and far-infrared emitting functions.

[0121] The preparation steps are as follows:

[0122] 1) Preparation of sodium-based montmorillonite nanopowder: Montmorillonite was dissolved in a 1 mol / L sodium hydroxide solution with a montmorillonite mass fraction of 10%. The mixture was stirred at a rate of 600 rpm. After uniform stirring, the mixture was added to a liquid phase grinding apparatus for grinding. During the grinding process, as the particle size decreased, the surface of the montmorillonite gradually became hydroxylated and reacted with sodium hydroxide. After drying, sodium-based nano-montmorillonite was obtained. The drying temperature was 140°C, the drying time was 4 hours, and the particle size was 80 nm.

[0123] 2) Nano-montmorillonite-conductive polymer composite material: Sodium-based nano-montmorillonite is added to a polymer poly (3,4-ethylenedioxythiophene) (PEDOT)-lithium ion conductive ion polymer solution and continuously stirred. Under the induction of ion polarization, the conductive ion polymer will pass through the micropores of the nano-montmorillonite or entangle with it to form a gel. The gel is dried and the product obtained after drying is subjected to high-temperature treatment at 220°C under anaerobic conditions.

[0124] The mass ratio of sodium-based nano-montmorillonite to ion-conductive polymer is 2:1.

[0125] In the ion-conducting polymer, the molar ratio of poly(3,4-ethylenedioxythiophene) to lithium ions is 5:100.

[0126] 3) Antistatic Far-Infrared Polyester Fiber: Sodium-based nano-montmorillonite and conductive ion polymer were premixed with PET resin powder at a 30% mass ratio at a premixer speed of 200 rpm. The mixture was extruded through a twin-screw extruder to produce a PET masterbatch with antistatic and far-infrared properties. The twin-screw processing temperature was 270°C. The functional fiber was then prepared by composite spinning of PET chips. The masterbatch content was 5%, the PET screw temperature was 275°C, and the spinning temperature was 285°C. The resulting fiber had a specification of 150D / 288F, and the mass content of the sodium-based nano-montmorillonite-conductive ion polymer composite material was 1.5%.

[0127] The fiber spinning was normal, but when doing dyeing experiments, it dyed normally when dyed at 130℃ in the dye cup, and the mechanical properties were normal.

[0128] Example 8

[0129] This embodiment provides a functional fiber that can actively keep warm and has both hydrophilic antistatic and far-infrared emitting functions.

[0130] The preparation steps are as follows:

[0131] 1) Preparation of sodium-based montmorillonite nanopowder: Montmorillonite was dissolved in a 1 mol / L sodium hydroxide solution with a montmorillonite mass fraction of 10%. The mixture was stirred at a rate of 600 rpm. After uniform stirring, the mixture was added to a liquid phase grinding apparatus for grinding. During the grinding process, as the particle size decreased, the surface of the montmorillonite gradually became hydroxylated and reacted with sodium hydroxide. After drying, sodium-based nano-montmorillonite was obtained. The drying temperature was 140°C, the drying time was 4 hours, and the particle size was 80 nm.

[0132] 2) Nano-montmorillonite-conductive polymer composite material: Sodium-based nano-montmorillonite is added to a polymer poly (3,4-ethylenedioxythiophene) (PEDOT)-lithium ion conductive ion polymer solution and continuously stirred. Under the induction of ion polarization, the conductive ion polymer will pass through the micropores of the nano-montmorillonite or entangle with it to form a gel. The gel is dried and the product obtained after drying is subjected to high-temperature treatment at 260°C under anaerobic conditions.

[0133] The mass ratio of sodium-based nano-montmorillonite to ion-conductive polymer is 2:1.

[0134] In the ion-conducting polymer, the molar ratio of poly(3,4-ethylenedioxythiophene) to lithium ions is 5:100.

[0135] 3) Antistatic Far-Infrared Polyester Fiber: Sodium-based nano-montmorillonite and conductive ion polymer were premixed with PET resin powder at a 30% mass ratio at a premixer speed of 200 rpm. The mixture was extruded through a twin-screw extruder to produce a PET masterbatch with antistatic and far-infrared properties. The twin-screw processing temperature was 270°C. The functional fiber was then prepared by composite spinning of PET chips. The masterbatch content was 5%, the PET screw temperature was 275°C, and the spinning temperature was 285°C. The resulting fiber had a specification of 150D / 288F, and the mass content of the sodium-based nano-montmorillonite-conductive ion polymer composite material was 1.5%.

[0136] The fiber spinning was normal, but when doing dyeing experiments, it dyed normally when dyed at 130℃ in the dye cup, and the mechanical properties were normal.

[0137] Example 9

[0138] This embodiment provides a functional fiber that can actively keep warm and has both hydrophilic antistatic and far-infrared emitting functions.

[0139] The preparation steps are as follows:

[0140] 1) Preparation of sodium-based montmorillonite nanopowder: Montmorillonite was dissolved in a 1 mol / L sodium hydroxide solution with a montmorillonite mass fraction of 10%. The mixture was stirred at a rate of 600 rpm. After uniform stirring, the mixture was added to a liquid phase grinding apparatus for grinding. During the grinding process, as the particle size decreased, the surface of the montmorillonite gradually became hydroxylated and reacted with sodium hydroxide. After drying, sodium-based nano-montmorillonite was obtained. The drying temperature was 140°C, the drying time was 4 hours, and the particle size was 80 nm.

[0141] 2) Nano-montmorillonite-conductive polymer composite material: Sodium-based nano-montmorillonite is added to a polymer poly (3,4-ethylenedioxythiophene) (PEDOT)-lithium ion conductive ion polymer solution and continuously stirred. Under the induction of ion polarization, the conductive ion polymer will pass through the micropores of the nano-montmorillonite or entangle with it to form a gel. The gel is dried, and the product obtained after drying is subjected to high-temperature treatment at 300°C under anaerobic conditions.

[0142] The mass ratio of sodium-based nano-montmorillonite to ion-conductive polymer is 2:1.

[0143] In the ion-conducting polymer, the molar ratio of poly(3,4-ethylenedioxythiophene) to lithium ions is 5:100.

[0144] 3) Antistatic Far-Infrared Polyester Fiber: Sodium-based nano-montmorillonite and conductive ion polymer were premixed with PET resin powder at a 30% mass ratio at a premixer speed of 200 rpm. The mixture was extruded through a twin-screw extruder to produce a PET masterbatch with antistatic and far-infrared properties. The twin-screw processing temperature was 270°C. The functional fiber was then prepared by composite spinning of PET chips. The masterbatch content was 5%, the PET screw temperature was 275°C, and the spinning temperature was 285°C. The resulting fiber had a specification of 150D / 288F, and the mass content of the sodium-based nano-montmorillonite-conductive ion polymer composite material was 1.5%.

[0145] The fiber spinning was normal, but when doing dyeing experiments, it dyed normally when dyed at 130℃ in the dye cup, and the mechanical properties were normal.

[0146] The fiber samples of Examples 4, 7, 8, and 9 were woven and the antistatic properties of the fabrics were evaluated. During the preparation of the composite material, the temperature of the high temperature treatment was appropriately controlled at 180-300°C, and the best effect was achieved when the high temperature treatment temperature was 220°C (i.e., Example 7). The microscopic properties of the fibers were as follows: Figure 1 As shown, the components are evenly distributed.

[0147] The above are all preliminary evaluations of purely functional fiber fabrics.

[0148] Example 10

[0149] This embodiment provides a light and thin knitted velvet fabric, the preparation process of which includes: weaving, dyeing, shaping, raising, shaping and rolling.

[0150] 1) A weft knitting circular loom was used with a width of 30 inches and a weaving process of 22 needles in 2 rows, with a threading pattern of AABB followed by three holes and one gap. A functional fiber (the fiber obtained in Example 7) with hydrophilic, antistatic, and far-infrared emitting properties and active warmth retention was mixed with a conventional polyester fiber of the same specification for the face yarn of the fabric, with the mass fraction of the functional fiber in the face yarn being 10%.

[0151] Yarn weaving specifications:

[0152] Ordinary polyester: 150D / 288F DTY semi-gloss flat, functional polyester: 150D / 288F DTY; base yarn: 100D / 96F high elastic, binding yarn: 100D / 96F high elastic; gram weight controlled at 100g per square meter.

[0153] 2) The dyeing process uses a high-temperature and high-pressure overflow dyeing machine, the dye bath ratio is controlled at 1:15, the dye is selected as a disperse dye (disperse gray), glacial acetic acid is added after the cloth is fed, and the dosage is controlled at 0.5g / L to ensure that the working bath pH is 4. The entire dyeing process is divided into five stages. The first stage is to heat the temperature to 130℃, the heating rate is controlled at 1.5℃ / min, and then keep warm for 40min. The second stage is to cool from 130℃ to 80℃, the rate is controlled at 2℃ / min, the temperature is controlled for 10min, soda ash and insurance powder are added, the dosage of soda ash and insurance powder is 3g / L to ensure the fastness of the product. The third stage is to continue to cool to 40℃, the rate is controlled at 1.5℃ / min, and then drain. The fourth stage is to continue to feed water and add 0.6g / L of glacial acetic acid to adjust the pH value of the cloth surface and control the pH value of the cloth surface at 7. The fifth stage is overflow water washing and batch water washing, and the control time is 20min.

[0154] 3) The shaping step is a drying process, the temperature setting needs to be controlled at 170°C and the speed is controlled at 30m / min.

[0155] 4) The napping step is a continuous napping method, using 8 serially connected napping machines to continuously nap the fabric, of which the first 3 are 36-roller napping machines for the purpose of loosening, the middle 4 are 24-roller napping machines for napping, and the last one is set to 36 rollers for combing. At the same time, the clockwise and counterclockwise parameter ratios of the napping machine are strictly controlled, and the front combing extension line of the fabric needs to be completely broken to obtain a velvet fabric with a nap height of 5 mm.

[0156] 5) The shaping and rolling process is a process that provides the fabric with a certain dimensional stability and soft feel. By adding 30g / L concentration of ternary copolymer amino silicone oil (Dow Chemical) in the shaping machine rolling groove, the rolling pressure is controlled at 0.4MPa, the temperature is controlled at 170℃, and the speed is controlled at 30m / min, a light and thin knitted velvet fabric with a certain dimensional stability and feel is obtained.

[0157] Table 1: Hydrophilic antistatic and far infrared emitting active thermal insulation properties of the fabric obtained in this example

[0158] Test items Test results Test Basis Triboelectric voltage 2200V GB / T 12703.5-2010 Far infrared emissivity 0.80 GB / T 30127-2013 Far infrared radiation warming 1.8℃ GB / T 30127-2013 .

[0159] Example 11

[0160] This embodiment provides a light and thin knitted velvet fabric, the preparation process of which includes: weaving, dyeing, shaping, raising, shaping and rolling.

[0161] 1) A weft knitting circular loom was used with a width of 30 inches and a weaving process of 22 needles in two rows, with a threading pattern of AABB followed by three holes and one gap. A functional fiber (the fiber obtained in Example 7) with hydrophilic, antistatic, and far-infrared emitting properties and active warmth retention was mixed with a conventional polyester fiber of the same specification for the face yarn of the fabric, with the mass fraction of the functional fiber in the face yarn being 20%.

[0162] Yarn weaving specifications:

[0163] Ordinary polyester: 150D / 288F DTY semi-gloss flat, functional polyester: 150D / 288F DTY; base yarn: 100D / 96F high elastic, binding yarn: 100D / 96F high elastic; gram weight controlled at 100g per square meter.

[0164] 2) The dyeing process uses a high-temperature and high-pressure overflow dyeing machine, the dye bath ratio is controlled at 1:15, the dye is selected as a disperse dye (disperse gray), glacial acetic acid is added after the cloth is fed, and the dosage is controlled at 0.5g / L to ensure that the working bath pH is 4. The entire dyeing process is divided into five stages. The first stage is to heat the temperature to 130℃, the heating rate is controlled at 1.5℃ / min, and then keep warm for 40min. The second stage is to cool from 130℃ to 80℃, the rate is controlled at 2℃ / min, the temperature is controlled for 10min, soda ash and insurance powder are added, the dosage of soda ash and insurance powder is 3g / L to ensure the fastness of the product. The third stage is to continue to cool to 40℃, the rate is controlled at 1.5℃ / min, and then drain. The fourth stage is to continue to feed water and add 0.6g / L of glacial acetic acid to adjust the pH value of the cloth surface and control the pH value of the cloth surface at 7. The fifth stage is overflow water washing and batch water washing, and the control time is 20min.

[0165] 3) The shaping step is a drying process, the temperature setting needs to be controlled at 170°C and the speed is controlled at 30m / min.

[0166] 4) The napping step is a continuous napping method, using 8 serially connected napping machines to continuously nap the fabric, of which the first 3 are 36-roller napping machines for the purpose of loosening, the middle 4 are 24-roller napping machines for napping, and the last one is set to 36 rollers for combing. At the same time, the clockwise and counterclockwise parameter ratios of the napping machine are strictly controlled, and the front combing extension line of the fabric needs to be completely broken to obtain a velvet fabric with a nap height of 5 mm.

[0167] 5) The shaping and rolling process is a process that provides the fabric with a certain dimensional stability and soft feel. By adding 30g / L concentration of ternary copolymer amino silicone oil (Dow Chemical) in the shaping machine rolling groove, the rolling pressure is controlled at 0.4MPa, the temperature is controlled at 170℃, and the speed is controlled at 30m / min, a light and thin knitted velvet fabric with a certain dimensional stability and feel is obtained.

[0168] Table 2: Hydrophilic antistatic and far infrared emitting active thermal insulation properties of the fabric obtained in this example

[0169] Test items Test results Test Basis Triboelectric voltage 1800V GB / T 12703.5-2010 Far infrared emissivity 0.82 GB / T 30127-2013 Far infrared radiation warming 2.3℃ GB / T 30127-2013 .

[0170] Example 12

[0171] This embodiment provides a light and thin knitted velvet fabric, the preparation process of which includes: weaving, dyeing, shaping, raising, shaping and rolling.

[0172] 1) A weft knitting circular loom was used with a width of 30 inches and a weaving process of 22 needles in 2 rows, with a threading pattern of AABB followed by three holes and one gap. A functional fiber (the fiber obtained in Example 7) with hydrophilic, antistatic, and far-infrared emitting properties and active warmth retention was mixed with a conventional polyester fiber of the same specification for the face yarn of the fabric, with the mass fraction of the functional fiber in the face yarn being 40%.

[0173] Yarn weaving specifications:

[0174] Ordinary polyester: 150D / 288F DTY semi-gloss flat, functional polyester: 150D / 288F DTY; base yarn: 100D / 96F high elastic, binding yarn: 100D / 96F high elastic; gram weight controlled at 100g per square meter.

[0175] 2) The dyeing process uses a high-temperature and high-pressure overflow dyeing machine, the dye bath ratio is controlled at 1:15, the dye is selected as a disperse dye (disperse gray), glacial acetic acid is added after the cloth is fed, and the dosage is controlled at 0.5g / L to ensure that the working bath pH is 4. The entire dyeing process is divided into five stages. The first stage is to heat the temperature to 130℃, the heating rate is controlled at 1.5℃ / min, and then keep warm for 40min. The second stage is to cool from 130℃ to 80℃, the rate is controlled at 2℃ / min, the temperature is controlled for 10min, soda ash and insurance powder are added, the dosage of soda ash and insurance powder is 3g / L to ensure the fastness of the product. The third stage is to continue to cool to 40℃, the rate is controlled at 1.5℃ / min, and then drain. The fourth stage is to continue to feed water and add 0.6g / L of glacial acetic acid to adjust the pH value of the cloth surface and control the pH value of the cloth surface at 7. The fifth stage is overflow water washing and batch water washing, and the control time is 20min.

[0176] 3) The shaping step is a drying process, the temperature setting needs to be controlled at 170°C and the speed is controlled at 30m / min.

[0177] 4) The napping step is a continuous napping method, using 8 serially connected napping machines to continuously nap the fabric, of which the first 3 are 36-roller napping machines for the purpose of loosening, the middle 4 are 24-roller napping machines for napping, and the last one is set to 36 rollers for combing. At the same time, the clockwise and counterclockwise parameter ratios of the napping machine are strictly controlled, and the front combing extension line of the fabric needs to be completely broken to obtain a velvet fabric with a nap height of 5 mm.

[0178] 5) The shaping and rolling process is a process that provides the fabric with a certain dimensional stability and soft feel. By adding 30g / L concentration of ternary copolymer amino silicone oil (Dow Chemical) in the shaping machine rolling groove, the rolling pressure is controlled at 0.4MPa, the temperature is controlled at 170℃, and the speed is controlled at 30m / min, a light and thin knitted velvet fabric with a certain dimensional stability and feel is obtained.

[0179] Table 3: Hydrophilic antistatic and far infrared emitting active thermal insulation properties of the fabric obtained in this example

[0180] Test items Test results Test Basis Triboelectric voltage 1100V GB / T 12703.5-2010 Far infrared emissivity 0.86 GB / T 30127-2013 Far infrared radiation warming 2.9℃ GB / T 30127-2013 .

[0181] Example 13

[0182] This embodiment provides a light and thin knitted velvet fabric, the preparation process of which includes: weaving, dyeing, shaping, raising, shaping and rolling.

[0183] 1) A weft knitting circular loom was used with a width of 30 inches and a weaving process of 22 needles in 2 rows, with a threading pattern of AABB followed by three holes and one gap. The surface yarn of the fabric was a blend of a functional fiber with hydrophilic, antistatic, and far-infrared emitting properties (the fiber obtained in Example 7) and a conventional polyester fiber of the same specification, with the mass fraction of the functional fiber in the surface yarn being 60%.

[0184] Yarn weaving specifications:

[0185] Ordinary polyester: 150D / 288F DTY semi-gloss flat, functional polyester: 150D / 288F DTY; base yarn: 100D / 96F high elastic, binding yarn: 100D / 96F high elastic; gram weight controlled at 100g per square meter.

[0186] 2) The dyeing process uses a high-temperature and high-pressure overflow dyeing machine, the dye bath ratio is controlled at 1:15, the dye is selected as a disperse dye (disperse gray), glacial acetic acid is added after the cloth is fed, and the dosage is controlled at 0.5g / L to ensure that the working bath pH is 4. The entire dyeing process is divided into five stages. The first stage is to heat the temperature to 130℃, the heating rate is controlled at 1.5℃ / min, and then keep warm for 40min. The second stage is to cool from 130℃ to 80℃, the rate is controlled at 2℃ / min, the temperature is controlled for 10min, soda ash and insurance powder are added, the dosage of soda ash and insurance powder is 3g / L to ensure the fastness of the product. The third stage is to continue to cool to 40℃, the rate is controlled at 1.5℃ / min, and then drain. The fourth stage is to continue to feed water and add 0.6g / L of glacial acetic acid to adjust the pH value of the cloth surface and control the pH value of the cloth surface at 7. The fifth stage is overflow water washing and batch water washing, and the control time is 20min.

[0187] 3) The shaping step is a drying process, the temperature setting needs to be controlled at 170°C and the speed is controlled at 30m / min.

[0188] 4) The napping step is a continuous napping method, using 8 serially connected napping machines to continuously nap the fabric, of which the first 3 are 36-roller napping machines for the purpose of loosening, the middle 4 are 24-roller napping machines for napping, and the last one is set to 36 rollers for combing. At the same time, the clockwise and counterclockwise parameter ratios of the napping machine are strictly controlled, and the front combing extension line of the fabric needs to be completely broken to obtain a velvet fabric with a nap height of 5 mm.

[0189] 5) The shaping and rolling process is a process that provides the fabric with a certain dimensional stability and soft feel. By adding 30g / L concentration of ternary copolymer amino silicone oil (Dow Chemical) in the shaping machine rolling groove, the rolling pressure is controlled at 0.4MPa, the temperature is controlled at 170℃, and the speed is controlled at 30m / min, a light and thin knitted velvet fabric with a certain dimensional stability and feel is obtained.

[0190] Table 4: Hydrophilic antistatic and far infrared emitting active thermal insulation properties of the fabric obtained in this example

[0191] Test items Test results Test Basis Triboelectric voltage 600V GB / T 12703.5-2010 Far infrared emissivity 0.89 GB / T 30127-2013 Far infrared radiation warming 3.3℃ GB / T 30127-2013 .

[0192] Example 14

[0193] This embodiment provides a light and thin knitted velvet fabric, the preparation process of which includes: weaving, dyeing, shaping, raising, shaping and rolling.

[0194] 1) A weft knitting circular loom was used with a width of 30 inches and a weaving process of 22 needles in 2 rows, with a threading pattern of AABB followed by three holes and one gap. The surface yarn of the fabric was a blend of a functional fiber (the fiber obtained in Example 7) having hydrophilic, antistatic, and far-infrared emitting properties and a conventional polyester fiber of the same specification, with the mass fraction of the functional fiber in the surface yarn being 80%.

[0195] Yarn weaving specifications:

[0196] Ordinary polyester: 150D / 288F DTY semi-gloss flat, functional polyester: 150D / 288F DTY; base yarn: 100D / 96F high elastic, binding yarn: 100D / 96F high elastic; gram weight controlled at 100g per square meter.

[0197] 2) The dyeing process uses a high-temperature and high-pressure overflow dyeing machine, the dye bath ratio is controlled at 1:15, the dye is selected as a disperse dye (disperse gray), glacial acetic acid is added after the cloth is fed, and the dosage is controlled at 0.5g / L to ensure that the working bath pH is 4. The entire dyeing process is divided into five stages. The first stage is to heat the temperature to 130℃, the heating rate is controlled at 1.5℃ / min, and then keep warm for 40min. The second stage is to cool from 130℃ to 80℃, the rate is controlled at 2℃ / min, the temperature is controlled for 10min, soda ash and insurance powder are added, the dosage of soda ash and insurance powder is 3g / L to ensure the fastness of the product. The third stage is to continue to cool to 40℃, the rate is controlled at 1.5℃ / min, and then drain. The fourth stage is to continue to feed water and add 0.6g / L of glacial acetic acid to adjust the pH value of the cloth surface and control the pH value of the cloth surface at 7. The fifth stage is overflow water washing and batch water washing, and the control time is 20min.

[0198] 3) The shaping step is a drying process, the temperature setting needs to be controlled at 170°C and the speed is controlled at 30m / min.

[0199] 4) The napping step is a continuous napping method, using 8 serially connected napping machines to continuously nap the fabric, of which the first 3 are 36-roller napping machines for the purpose of loosening, the middle 4 are 24-roller napping machines for napping, and the last one is set to 36 rollers for combing. At the same time, the clockwise and counterclockwise parameter ratios of the napping machine are strictly controlled, and the front combing extension line of the fabric needs to be completely broken to obtain a velvet fabric with a nap height of 5 mm.

[0200] 5) The shaping and rolling process is a process that provides the fabric with a certain dimensional stability and soft feel. By adding 30g / L concentration of ternary copolymer amino silicone oil (Dow Chemical) in the shaping machine rolling groove, the rolling pressure is controlled at 0.4MPa, the temperature is controlled at 170℃, and the speed is controlled at 30m / min, a light and thin knitted velvet fabric with a certain dimensional stability and feel is obtained.

[0201] Table 5: Hydrophilic antistatic and far infrared emitting active thermal insulation properties of the fabric obtained in this example

[0202] Test items Test results Test Basis Triboelectric voltage 500V GB / T 12703.5-2010 Far infrared emissivity 0.92 GB / T 30127-2013 Far infrared radiation warming 3.7℃ GB / T 30127-2013 Crowe value 0.6599 GB / T 11048-2008 Warmth retention rate 49.17％ GB / T 11048-2008 .

[0203] Example 15

[0204] This embodiment provides a light and thin knitted velvet fabric, the preparation process of which includes: weaving, dyeing, shaping, raising, shaping and rolling.

[0205] 1) A weft knitting circular loom was used with a width of 30 inches and a weaving process of 22 needles in 2 rows, with a threading pattern of AABB followed by three holes and one gap. A functional fiber (the fiber obtained in Example 7) with hydrophilic, antistatic, and far-infrared emitting properties and active warmth retention was mixed with a conventional polyester fiber of the same specification for the face yarn of the fabric, with the mass fraction of the functional fiber in the face yarn being 100%.

[0206] Yarn weaving specifications:

[0207] Ordinary polyester: 150D / 288F DTY semi-gloss flat, functional polyester: 150D / 288F DTY; base yarn: 100D / 96F high elastic, binding yarn: 100D / 96F high elastic; gram weight controlled at 100g per square meter.

[0208] 2) The dyeing process uses a high-temperature and high-pressure overflow dyeing machine, the dye bath ratio is controlled at 1:15, the dye is selected as a disperse dye (disperse gray), glacial acetic acid is added after the cloth is fed, and the dosage is controlled at 0.5g / L to ensure that the working bath pH is 4. The entire dyeing process is divided into five stages. The first stage is to heat the temperature to 130℃, the heating rate is controlled at 1.5℃ / min, and then keep warm for 40min. The second stage is to cool from 130℃ to 80℃, the rate is controlled at 2℃ / min, the temperature is controlled for 10min, soda ash and insurance powder are added, the dosage of soda ash and insurance powder is 3g / L to ensure the fastness of the product. The third stage is to continue to cool to 40℃, the rate is controlled at 1.5℃ / min, and then drain. The fourth stage is to continue to feed water and add 0.6g / L of glacial acetic acid to adjust the pH value of the cloth surface and control the pH value of the cloth surface at 7. The fifth stage is overflow water washing and batch water washing, and the control time is 20min.

[0209] 3) The shaping step is a drying process, the temperature setting needs to be controlled at 170°C and the speed is controlled at 30m / min.

[0210] 4) The napping step is a continuous napping method, using 8 serially connected napping machines to continuously nap the fabric, of which the first 3 are 36-roller napping machines for the purpose of loosening, the middle 4 are 24-roller napping machines for napping, and the last one is set to 36 rollers for combing. At the same time, the clockwise and counterclockwise parameter ratios of the napping machine are strictly controlled, and the front combing extension line of the fabric needs to be completely broken to obtain a velvet fabric with a nap height of 5 mm.

[0211] 5) The shaping and rolling process is a process that provides the fabric with a certain dimensional stability and soft feel. By adding 30g / L concentration of ternary copolymer amino silicone oil (Dow Chemical) in the shaping machine rolling groove, the rolling pressure is controlled at 0.4MPa, the temperature is controlled at 170℃, and the speed is controlled at 30m / min, a light and thin knitted velvet fabric with a certain dimensional stability and feel is obtained.

[0212] Table 6: Hydrophilic antistatic and far infrared emitting active thermal insulation properties of the fabric obtained in this example

[0213] Test items Test results Test Basis Triboelectric voltage 500V GB / T 12703.5-2010 Far infrared emissivity 0.92 GB / T 30127-2013 Far infrared radiation warming 3.8℃ GB / T 30127-2013 .

[0214] Examples 10 to 15 respectively verify the effect of the amount of functional fiber added to the noodle yarn on the fabric performance. The results show that as the amount of functional fiber in the noodle yarn increases, the hydrophilic antistatic and far-infrared emission active warmth-keeping functions of the corresponding fabric are significantly improved. However, when its proportion in the noodle yarn reaches 60% (Example 13), it can basically cover the entire fabric. Further increasing its proportion to more than 80% (Examples 14 and 15), the hydrophilic antistatic and far-infrared emission active warmth-keeping functions do not change much. At this time, continuing to increase the amount of antistatic far-infrared functional yarn, its antistatic and far-infrared effects do not increase, indicating that when the proportion reaches 80%, the functional fiber has achieved full coverage of the fabric and the performance has been maximized. Therefore, the proportion of functional fiber in the noodle yarn is appropriately controlled at 60-80%, with 80% (Example 14) being the best.

[0215] Example 16

[0216] This embodiment provides a light and thin knitted velvet fabric, the preparation process of which includes: weaving, dyeing, shaping, raising, shaping and rolling.

[0217] 1) A weft knitting circular loom was used with a width of 30 inches and a weaving process of 22 needles in 2 rows, with a threading pattern of AABB followed by three holes and one gap. The surface yarn of the fabric was a blend of a functional fiber (the fiber obtained in Example 7) having hydrophilic, antistatic, and far-infrared emitting properties and a conventional polyester fiber of the same specification, with the mass fraction of the functional fiber in the surface yarn being 80%.

[0218] Yarn weaving specifications:

[0219] Ordinary polyester: 150D / 288F DTY semi-gloss flat, functional polyester: 150D / 288F DTY; base yarn: 100D / 96F high elastic, binding yarn: 100D / 96F high elastic; gram weight controlled at 80g per square meter.

[0220] 2) The dyeing process uses a high-temperature and high-pressure overflow dyeing machine, the dye bath ratio is controlled at 1:15, the dye is selected as a disperse dye (disperse gray), glacial acetic acid is added after the cloth is fed, and the dosage is controlled at 0.5g / L to ensure that the working bath pH is 4. The entire dyeing process is divided into five stages. The first stage is to heat the temperature to 130℃, the heating rate is controlled at 1.5℃ / min, and then keep warm for 40min. The second stage is to cool from 130℃ to 80℃, the rate is controlled at 2℃ / min, the temperature is controlled for 10min, soda ash and insurance powder are added, the dosage of soda ash and insurance powder is 3g / L to ensure the fastness of the product. The third stage is to continue to cool to 40℃, the rate is controlled at 1.5℃ / min, and then drain. The fourth stage is to continue to feed water and add 0.6g / L of glacial acetic acid to adjust the pH value of the cloth surface and control the pH value of the cloth surface at 7. The fifth stage is overflow water washing and batch water washing, and the control time is 20min.

[0221] 3) The shaping step is a drying process, the temperature setting needs to be controlled at 170°C and the speed is controlled at 30m / min.

[0222] 4) The napping step is a continuous napping method, using 8 serially connected napping machines to continuously nap the fabric, of which the first 3 are 36-roller napping machines for the purpose of loosening, the middle 4 are 24-roller napping machines for napping, and the last one is set to 36 rollers for combing. At the same time, the clockwise and counterclockwise parameter ratios of the napping machine are strictly controlled, and the front combing extension line of the fabric needs to be completely broken to obtain a velvet fabric with a nap height of 5 mm.

[0223] 5) The shaping and rolling process is a process that provides the fabric with a certain dimensional stability and soft feel. By adding 30g / L concentration of ternary copolymer amino silicone oil (Dow Chemical) in the shaping machine rolling groove, the rolling pressure is controlled at 0.4MPa, the temperature is controlled at 170℃, and the speed is controlled at 30m / min, a light and thin knitted velvet fabric with a certain dimensional stability and feel is obtained.

[0224] Table 7: Hydrophilic antistatic and far infrared emitting active thermal insulation properties of the fabric obtained in this example

[0225]

[0226]

[0227] Example 17

[0228] This embodiment provides a light and thin knitted velvet fabric, the preparation process of which includes: weaving, dyeing, shaping, raising, shaping and rolling.

[0229] 1) A weft knitting circular loom was used with a width of 30 inches and a weaving process of 22 needles in 2 rows, with a threading pattern of AABB followed by three holes and one gap. The surface yarn of the fabric was a blend of a functional fiber (the fiber obtained in Example 7) having hydrophilic, antistatic, and far-infrared emitting properties and a conventional polyester fiber of the same specification, with the mass fraction of the functional fiber in the surface yarn being 80%.

[0230] Yarn weaving specifications:

[0231] Ordinary polyester: 150D / 288F DTY semi-gloss flat, functional polyester: 150D / 288F DTY; base yarn: 100D / 96F high elastic, binding yarn: 100D / 96F high elastic; gram weight controlled at 120g per square meter.

[0232] 2) The dyeing process uses a high-temperature and high-pressure overflow dyeing machine, the dye bath ratio is controlled at 1:15, the dye is selected as a disperse dye (disperse gray), glacial acetic acid is added after the cloth is fed, and the dosage is controlled at 0.5g / L to ensure that the working bath pH is 4. The entire dyeing process is divided into five stages. The first stage is to heat the temperature to 130℃, the heating rate is controlled at 1.5℃ / min, and then keep warm for 40min. The second stage is to cool from 130℃ to 80℃, the rate is controlled at 2℃ / min, the temperature is controlled for 10min, soda ash and insurance powder are added, the dosage of soda ash and insurance powder is 3g / L to ensure the fastness of the product. The third stage is to continue to cool to 40℃, the rate is controlled at 1.5℃ / min, and then drain. The fourth stage is to continue to feed water and add 0.6g / L of glacial acetic acid to adjust the pH value of the cloth surface and control the pH value of the cloth surface at 7. The fifth stage is overflow water washing and batch water washing, and the control time is 20min.

[0233] 3) The shaping step is a drying process, the temperature setting needs to be controlled at 170°C and the speed is controlled at 30m / min.

[0234] 4) The napping step is a continuous napping method, using 8 serially connected napping machines to continuously nap the fabric, of which the first 3 are 36-roller napping machines for the purpose of loosening, the middle 4 are 24-roller napping machines for napping, and the last one is set to 36 rollers for combing. At the same time, the clockwise and counterclockwise parameter ratios of the napping machine are strictly controlled, and the front combing extension line of the fabric needs to be completely broken to obtain a velvet fabric with a nap height of 5 mm.

[0235] 5) The shaping and rolling process is a process that provides the fabric with a certain dimensional stability and soft feel. By adding 30g / L concentration of ternary copolymer amino silicone oil (Dow Chemical) in the shaping machine rolling groove, the rolling pressure is controlled at 0.4MPa, the temperature is controlled at 170℃, and the speed is controlled at 30m / min, a light and thin knitted velvet fabric with a certain dimensional stability and feel is obtained.

[0236] Table 8: Hydrophilic antistatic and far infrared emitting active thermal insulation properties of the fabric obtained in this example

[0237]

[0238]

[0239] Combined with Example 14 and compared with Examples 16 to 17, the influence of fabric weight was verified by further testing the Kroger value and the warmth retention rate. The results showed that when the weight was 100 grams, the Kroger value and the warmth retention rate exceeded the national standard requirements. When the weight was 80 grams, 100 grams and 120 grams were compared for style evaluation, it was found that when the weight was 100 grams (Example 14), the feel and style were the best (see Figure 2 ).

[0240] Example 18

[0241] This embodiment provides a light and thin knitted velvet fabric, the preparation process of which includes: weaving, dyeing, shaping, raising, shaping and rolling.

[0242] 1) A weft knitting circular loom was used with a width of 30 inches and a weaving process of 22 needles in 2 rows, with a threading pattern of AABB followed by three holes and one gap. A functional fiber (the fiber obtained in Example 7) with hydrophilic, antistatic, and far-infrared emitting properties and active warmth retention was mixed with a conventional polyester fiber of the same specification as the base yarn of the fabric, with the mass fraction of the functional fiber in the base yarn being 80%.

[0243] Yarn weaving specifications:

[0244] Ordinary polyester: 150D / 288F DTY semi-gloss flat, functional polyester: 100D / 96F high elastic; base yarn: 100D / 96F high elastic, binding yarn: 100D / 96F high elastic; gram weight is controlled at 100g per square meter.

[0245] 2) The dyeing process uses a high-temperature and high-pressure overflow dyeing machine, the dye bath ratio is controlled at 1:15, the dye is selected as a disperse dye (disperse gray), glacial acetic acid is added after the cloth is fed, and the dosage is controlled at 0.5g / L to ensure that the working bath pH is 4. The entire dyeing process is divided into five stages. The first stage is to heat the temperature to 130℃, the heating rate is controlled at 1.5℃ / min, and then keep warm for 40min. The second stage is to cool from 130℃ to 80℃, the rate is controlled at 2℃ / min, the temperature is controlled for 10min, soda ash and insurance powder are added, the dosage of soda ash and insurance powder is 3g / L to ensure the fastness of the product. The third stage is to continue to cool to 40℃, the rate is controlled at 1.5℃ / min, and then drain. The fourth stage is to continue to feed water and add 0.6g / L of glacial acetic acid to adjust the pH value of the cloth surface and control the pH value of the cloth surface at 7. The fifth stage is overflow water washing and batch water washing, and the control time is 20min.

[0246] 3) The shaping step is a drying process, the temperature setting needs to be controlled at 170°C and the speed is controlled at 30m / min.

[0247] 4) The napping step is a continuous napping method, using 8 serially connected napping machines to continuously nap the fabric, of which the first 3 are 36-roller napping machines for the purpose of loosening, the middle 4 are 24-roller napping machines for napping, and the last one is set to 36 rollers for combing. At the same time, the clockwise and counterclockwise parameter ratios of the napping machine are strictly controlled, and the front combing extension line of the fabric needs to be completely broken to obtain a velvet fabric with a nap height of 5 mm.

[0248] 5) The shaping and rolling process is a process that provides the fabric with a certain dimensional stability and soft feel. By adding 30g / L concentration of ternary copolymer amino silicone oil (Dow Chemical) in the shaping machine rolling groove, the rolling pressure is controlled at 0.4MPa, the temperature is controlled at 170℃, and the speed is controlled at 30m / min, a light and thin knitted velvet fabric with a certain dimensional stability and feel is obtained.

[0249] Table 9: Hydrophilic antistatic and far infrared emitting active thermal insulation properties of the fabric obtained in this example

[0250] Test items Test results Test Basis Triboelectric voltage 500V GB / T 12703.5-2010 Far infrared emissivity 0.92 GB / T 30127-2013 Far infrared radiation warming 3.7℃ GB / T 30127-2013 Crowe value 0.8768 GB / T 11048-2008 Warmth retention rate 54.62％ GB / T 11048-2008 .

[0251] In this embodiment, under the specifications of 80% functional fiber and 100g weight, the results show that compared with the application of functional fiber to the surface yarn (Example 14) under the same conditions, the active warmth preservation effect is best when the functional fiber is used for the base yarn. This is because the base yarn has a wider coverage rate, while the surface yarn may have air holes due to the special process, which leads to the actual coverage rate being lower than that of the base yarn.

[0252] The above-described embodiments merely represent several feasible implementation methods of the present invention. The description thereof is relatively specific and detailed, but it should not be understood as limiting the scope of the invention. The embodiments are not intended to limit the scope of protection in the claims of the present invention. For those skilled in the art, various modifications and improvements can be made without departing from the concept of the present invention. Any equivalent implementation or modification that does not depart from the scope of the present invention should be included in the technology of the present invention.

Claims

1. A functional fiber for active warmth retention, characterized by: The invention comprises a matrix, wherein the matrix is ​​doped with a nano-montmorillonite-conductive polymer composite material, wherein the doping amount of the nano-montmorillonite-conductive polymer composite material in the matrix fiber is 1-3%; and in the nano-montmorillonite-conductive polymer composite material, the mass ratio of the nano-montmorillonite to the conductive polymer is 1:9-9:

1.

2. The functional fiber with both hydrophilicity and antistatic properties and far-infrared emission for active warmth retention according to claim 1, characterized in that: The mass ratio of nano-montmorillonite to conductive polymer is 1~4:

1.

3. The functional fiber with both hydrophilicity and antistatic properties and far-infrared emission for active warmth retention according to claim 1, characterized in that: The conductive polymer is an ion conductive polymer.

4. The functional fiber having both hydrophilicity and antistatic properties and far-infrared emission for active warmth retention according to any one of claims 1 to 3, characterized in that: The matrix is ​​PET, the particle size of the nano-montmorillonite-conductive polymer composite material is 60-500nm, the nano-montmorillonite is sodium-modified montmorillonite, and the conductive polymer is a PEO alkali metal system or a polyether anion double salt system.

5. A method for preparing the active warmth-keeping functional fiber according to claim 1, characterized in that: Here are the steps: Step 1: immersing montmorillonite in a sodium hydroxide solution, stirring, grinding, and drying to obtain nano-montmorillonite powder; Step 2: Add the conductive polymer to the organic solvent and stir thoroughly to form a sol, then add the nano-montmorillonite powder and continue stirring to form a gel, freeze-dry the gel, treat it at a high temperature of 180-300°C, and grind it to obtain a nano-montmorillonite-conductive polymer composite material; Step three: premixing the nano-montmorillonite-conductive polymer composite material with the matrix material, extruding and granulating to obtain a masterbatch, and melt-spinning the masterbatch and the matrix material to obtain a functional fiber.

6. The method for preparing an active thermal insulation functional fiber according to claim 5, characterized in that: In step 2, high temperature treatment is performed at 200-220°C.

7. The method for preparing an active thermal insulation functional fiber according to claim 5, characterized in that: In step 3, the extrusion granulation temperature is 260-280° C., the melt spinning temperature is 270-290° C., and the fineness of the functional fiber is 0.5-5D.

8. Use of the active warmth-retaining functional fiber according to claim 1 in light and thin knitted fleece fabrics, characterized in that: The functional fiber is used in the base yarn or the surface yarn of a light and thin knitted velvet fabric, and the proportion of the functional fiber in the base yarn or the surface yarn is 10-100%.

9. Application of the active warmth-retaining functional fiber according to claim 8 in light and thin knitted fleece fabrics, characterized in that: Functional fibers are mixed with polyester fibers. Part of the polyester fibers and functional fibers constitute the surface yarn / base yarn, and the remaining polyester fibers are used as the base yarn / surface yarn. Through weaving, dyeing, shaping, raising, shaping and rolling, a light and thin knitted velvet fabric is obtained. In the weaving process, the grey fabric is woven on a weft knitting circular machine using 22 needles in 2 rows, with the threading method being AABB first and then three empty and one empty. The bottom yarn accounts for 30-50% of the fabric weight, the surface yarn 40-60%, and the binding yarn 10%. The finished product weighs 80-120g / m 2 ; In the dyeing process, the bath ratio is controlled at 1:10-20, glacial acetic acid is added after the cloth is fed, the concentration of glacial acetic acid is 0.2-1 g / L, and the working bath pH is 3-5; Dyeing is divided into five stages: Stage 1: Heat to 125-135°C at a rate of 1-2°C / min, and keep warm for 30-50 minutes; The second stage: cool down to 75-85℃ at a rate of 1.5-2.5℃ / min, keep warm for 10 minutes, add soda ash and hydrosulfite, the dosage of which is 2-4g / L. The third stage: continue to cool to 35-45℃, controlling the rate at 1-2℃ / min, and then drain; Stage 4: Continue adding water and adding glacial acetic acid, the concentration of glacial acetic acid is 0.2~1g / L, and adjust the fabric surface to neutral; The fifth stage: overflow water washing and batch water washing, the time is 10~30min, In the shaping process, the temperature is 200-230°C and the processing speed is 25-30 m / min; In the shaping roller softening process, the temperature is 170-220° C., the processing speed is 20-30 m / min, 10-30 g / L of ternary copolymerized amino silicone oil is added to the shaping roller, and the roller pressure is controlled at 0.35-0.4 MPa.

10. Application of the active warmth-keeping functional fiber according to claim 8 or 9 in light and thin knitted fleece fabrics, characterized in that: The shaping and calendering process also includes post-processing: combing and trimming by using a calendering machine and a shearing machine. The temperature of the calendering machine's roller is 160-190°C, and the rotation speed is 750rpm-950rpm.

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