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CN-121976340-A - Vortex spinning elastic composite yarn core-spun yarn and preparation process thereof

CN121976340ACN 121976340 ACN121976340 ACN 121976340ACN-121976340-A

Abstract

The application relates to the field of core spun yarns, and particularly discloses an vortex spinning elastic composite yarn core spun yarn and a preparation process thereof. A preparation method of the vortex spinning elastic composite yarn core-spun yarn comprises the following steps of (1) compounding elastic fibers and skeleton fibers to obtain elastic composite yarns, (2) combining short fibers, blowing-carding and drawing to obtain pretreated short fibers, (3) carrying out vortex spinning on the pretreated short fibers and the elastic composite yarns to obtain the vortex spinning elastic composite yarn core-spun yarn, wherein the denier of the elastic composite yarn is 25D-40D, the twist is 850-1400 twists/m, and the yarn count of the vortex spinning elastic composite yarn core-spun yarn is 16-40. The core-spun yarn has the characteristics of high elasticity and high stiffness.

Inventors

  • LI YUBIN
  • ZHANG SHOURONG
  • AI YINGJIE
  • GENG XIAONAN
  • ZHANG HAICHAO
  • LIU MINGZHE

Assignees

  • 德州华源生态科技有限公司

Dates

Publication Date
20260505
Application Date
20260129

Claims (8)

  1. 1. The preparation method of the vortex spinning elastic composite yarn core-spun yarn is characterized by comprising the following steps of: (1) Compounding elastic fiber and skeleton fiber to obtain elastic composite yarn; (2) Combining the short fibers, carding and drawing to obtain pretreated short fibers; (3) Vortex spinning the pretreated short fibers and the elastic composite yarn to obtain vortex spun elastic composite yarn core-spun yarn; the denier of the elastic composite yarn is 25D-40D, and the twist is 850-1400 twists/m; the yarn count of the vortex spinning elastic composite yarn core-spun yarn is 16-40.
  2. 2. The method for preparing the vortex spun elastic composite yarn core-spun yarn according to claim 1, wherein the mass ratio of the elastic fiber to the skeleton fiber is 1:1-1.2, and the mass ratio of the elastic composite yarn to the short fiber is 0.480-0.528:1.
  3. 3. The method for preparing the vortex spun elastic composite yarn core-spun yarn according to claim 1, wherein the elastic fiber is spandex, the skeleton fiber is at least one of nylon and terylene, and the short fiber is at least one of cellulose fiber and protein fiber.
  4. 4. The method for preparing the vortex spun elastic composite yarn core spun yarn of claim 1, wherein the skeleton fiber is pretreated by: (1) Adding the aqueous polyurethane dispersion and the carboxylated carbon nanotubes into water, uniformly mixing, and shearing at a high speed for 5-30min to obtain an impregnating solution; (2) And (3) after the skeleton fiber is subjected to low-temperature oxygen plasma treatment, adding the skeleton fiber into the impregnating solution for soaking, and drying at 100 ℃ for 5-7min and 120 ℃ for 3-5 min.
  5. 5. The method for preparing the vortex spun elastic composite yarn core-spun yarn of claim 4, wherein the mass ratio of the skeleton fiber, the aqueous polyurethane dispersion and the carboxylated carbon nanotubes is 1:0.05-0.08:0.005.
  6. 6. The method for preparing the vortex spun elastic composite yarn core spun yarn of claim 1, wherein the short fiber is pretreated by: Adding the short fibers into the mixed solution, soaking for 1-2h at 50-60 ℃, and drying.
  7. 7. The method for preparing the vortex spun elastic composite yarn core-spun yarn of claim 6, wherein the method for preparing the mixed liquor comprises the following steps: Adding dodecyl trimethyl ammonium chloride, polyoxyethylene stearate and polyethylene glycol into water, and uniformly stirring to obtain a mixed solution, wherein the mass ratio of the dodecyl trimethyl ammonium chloride to the polyoxyethylene stearate to the polyethylene glycol is 1-3:0.5-1:0.5-1.
  8. 8. A vortex spun elastic composite yarn core spun yarn characterized in that it is produced by the method of any one of claims 1 to 7.

Description

Vortex spinning elastic composite yarn core-spun yarn and preparation process thereof Technical Field The application relates to the field of core spun yarns, in particular to vortex spinning elastic composite yarn core spun yarns and a preparation process thereof. Background The vortex spinning core spun yarn combines the high-speed, high-efficiency and high-quality vortex spinning with the structural designability and functional compounding of the core spun yarn tightly, and produces the yarn with high added value, excellent performance, excellent appearance and strong functionality. Compared with the traditional ring spinning core spun yarn, the yarn has remarkable advantages in hairiness, uniformity, production efficiency and hand feeling style, and is an ideal yarn choice for developing novel fabrics. The traditional vortex spinning core spun yarn mainly comprises polyester or nylon, and the spandex has too high elasticity and is not suitable for processing in the high-speed drafting process of vortex spinning, so that the traditional vortex spinning core spun yarn cannot endow yarn with elasticity, and cannot produce yarn with high elasticity and high stiffness, and the high elasticity and high stiffness of the fabric cannot be realized. Therefore, there is a need for a covering yarn with excellent elasticity and stiffness that can achieve high elasticity and high stiffness of the fabric. Disclosure of Invention In order to improve the elasticity and stiffness of the yarn, the application provides vortex spun elastic composite yarn core spun yarn and a preparation process thereof. In a first aspect, the application provides an vortex spun elastic composite yarn core-spun yarn, which adopts the following technical scheme: the preparation method of the vortex spun elastic composite yarn core-spun yarn comprises the following steps: (1) Compounding elastic fiber and skeleton fiber to obtain elastic composite yarn; (2) Combining the short fibers, carding and drawing to obtain pretreated short fibers; (3) Vortex spinning the pretreated short fibers and the elastic composite yarn to obtain vortex spun elastic composite yarn core-spun yarn; the denier of the elastic composite yarn is 25D-40D, and the twist is 850-1400 twists/m; the yarn count of the vortex spinning elastic composite yarn core-spun yarn is 16-40. By adopting the technical scheme, the elastic fiber and the skeleton fiber are compounded into the stable elastic composite yarn under the twist of 850-1400 twists/m, so that the elastic fiber is prevented from retraction and position deviation in advance due to over-stretching in vortex spinning high-speed drafting, the elastic composite yarn is enabled to be precisely controlled and uniformly coated, the high efficiency and stability of vortex spinning are improved, the core spun yarn with excellent elasticity and stiffness is produced, and the limitation of the traditional technology is broken through. Optionally, the mass ratio of the elastic fiber to the skeleton fiber is 1:1-1.2, and the mass ratio of the elastic composite yarn to the short fiber is 0.480-0.528:1. Optionally, the elastic fiber is spandex, the skeleton fiber is at least one of nylon and terylene, and the short fiber is at least one of cellulose fiber and protein fiber. Optionally, the skeletal fibers are pretreated by: (1) Adding the aqueous polyurethane dispersion and the carboxylated carbon nanotubes into water, uniformly mixing, and shearing at a high speed for 5-30min to obtain an impregnating solution; (2) And (3) after the skeleton fiber is subjected to low-temperature oxygen plasma treatment, adding the skeleton fiber into the impregnating solution for soaking, and drying at 100 ℃ for 5-7min and 120 ℃ for 3-5 min. Optionally, the mass ratio of the skeleton fiber, the aqueous polyurethane dispersion and the carboxylated carbon nanotubes is 1:0.05-0.08:0.005. By adopting the technical scheme, the water volatilization promotes the aqueous polyurethane dispersion to be fused into a continuous solid film, the carboxylated carbon nano tube is firmly embedded on the surface of the skeleton fiber, the carbon nano tube has extremely high modulus and strength, the stiffness of the elastic composite yarn can be indirectly improved, the carbon nano tube has larger specific surface area and rich surface chemical sites, and stronger mechanical interlocking and chemical bonding effect can be formed with the molecular chains of the elastic fiber and the short fiber, so that the bonding strength among the skeleton fiber, the elastic fiber and the short fiber is improved, and the stiffness of the covering yarn is further improved. Optionally, the short fibers are pretreated by: Adding the short fibers into the mixed solution, soaking for 1-2h at 50-60 ℃, and drying. Optionally, the preparation method of the mixed solution comprises the following steps: Adding dodecyl trimethyl ammonium chloride, polyoxyethylene stearate and polyethylene gl