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CN-121992548-A - Process method for spinning ramie vortex spun yarn in high-proportion color spinning mode

CN121992548ACN 121992548 ACN121992548 ACN 121992548ACN-121992548-A

Abstract

The application relates to the technical field of spinning yarn preparation, and particularly discloses a process method of high-proportion color spinning ramie vortex spun yarns, which comprises the following steps of (1) preparing 70% -75% of ramie fibers and 20% -35% of vinylon as raw materials, (2) oiling treatment, pre-sealing the ramie fibers and vinylon for 2-4 days by using a self-made oiling agent, (3) mixing cotton and carding, mixing the oiled ramie fibers and vinylon, and then carding to obtain cotton slivers, (4) drawing, namely carrying out 2-3 drawing procedures on the cotton slivers, wherein the number of first drawing is 6, the total drawing multiple is 6-7 times, the number of second drawing multiple is 8, the total drawing multiple is 7-9 times, the number of third drawing multiple is 8, and the total drawing multiple is 7-9 times, and (5) vortex spinning, namely drawing, gathering, twisting, winding and shaping the cooked sliver to obtain the high-proportion color spinning ramie vortex spun yarns. The process method provided by the application can obviously improve the spinning performance of the ramie raw material.

Inventors

  • LIU JUNFANG
  • LIU JUNJUAN
  • CAO LIMING
  • XUE XIAOBIN
  • LI ZHIDE
  • YU GUANG
  • WANG JUNJING
  • LIU JINGJING

Assignees

  • 德州华源生态科技有限公司

Dates

Publication Date
20260508
Application Date
20260202

Claims (8)

  1. 1. The process method for spinning the yarn by the vortex of the high-proportion color spinning ramie is characterized by comprising the following steps of: (1) Preparing raw materials, namely 70-75% of ramie fibers and 20-35% of vinylon; (2) Oiling treatment, namely pre-disintegrating the ramie fibers and the vinylon for 2-4 days by using a self-oiling agent; (3) Mixing cotton and carding, namely mixing the oiled ramie fibers with vinylon, and carding to obtain cotton sliver; (4) Drawing, namely drawing the cotton sliver by 2-3 times, wherein the number of first drawing yarns is 6, the total drawing multiple is 6-7 times, the number of second drawing yarns is 8, the total drawing multiple is 7-9 times, the number of third drawing yarns is 8, and the total drawing multiple is 7-9 times to prepare a cooked sliver; (5) Vortex spinning, namely drafting, gathering, twisting and winding the cooked sliver to form the vortex spun ramie yarn with high-proportion color spinning.
  2. 2. The process for spinning ramie vortex spun yarn according to claim 1, wherein the self-oiling agent comprises the following raw materials in percentage by mass: 5 to 10 percent of white vinegar, 2 to 5 percent of soap powder, 1 to 3 percent of modified silicone oil, 0.8 to 1.5 percent of modified resin, 1 to 3 percent of glycerol and water which are added to 100 percent.
  3. 3. The process for spinning ramie vortex spun yarn according to claim 2, wherein the preparation method of the modified silicone oil comprises the following steps: (1) Mixing hydrogen-containing silicone oil and allyl polyether, heating to 120-140 ℃, introducing nitrogen for 2-3h, cooling to 80-90 ℃ after water removal, adding an isopropanol-chloroplatinic acid catalyst, preserving heat for 2-3h, and adsorbing and purifying diatomite to remove the isopropanol-chloroplatinic acid catalyst to obtain hydroxyethoxypropyl silicone oil, wherein the mass ratio of the hydrogen-containing silicone oil to the allyl polyether to the isopropanol-chloroplatinic acid catalyst is 100-110:38-40:0.2-0.4; (2) Mixing hydroxyethoxypropyl silicone oil, KH-560, dimethoxy (methyl) phenyl silane and decamethyl tetrasiloxane uniformly, heating to 80-90 ℃, stirring, adding tetrabutylammonium hydroxide, continuously reacting for 6-7h, adding glacial acetic acid to neutralize the tetrabutylammonium hydroxide, enabling the pH value of the reaction to be 6.5-7.5, heating to 120-130 ℃, and removing byproducts in vacuum to obtain the modified silicone oil.
  4. 4. A process for spinning a ramie vortex spun yarn according to claim 3, characterized in that the mass ratio of the hydroxyethoxypropyl silicon, KH-560, dimethoxy (methyl) phenylsilane and decamethyl tetrasiloxane is 100-110:15-20:10-12:8-10.
  5. 5. The process for spinning ramie vortex spun yarn according to claim 2, wherein the preparation method of the modified resin comprises the following steps: (1) Mixing N-methyl diethanolamine, 1, 4-butanediol and a catalyst, dropwise adding isophorone diisocyanate at 40-50 ℃, and reacting for 2-3 hours under heat preservation to form an isocyanate-terminated prepolymer; (2) Adding p-hydroxyanisole and hydroxyethyl acrylate into isocyanate-terminated prepolymer, heating to 50-60 ℃ for reaction for 2-3h to obtain semi-terminated prepolymer, adding castor oil, heating to 70-80 ℃ for reaction for 6-7h, cooling to 25-27 ℃, adding 1, 3-propane sultone and methanol, and reacting for 24-26h to obtain modified resin.
  6. 6. The process for spinning ramie vortex spun yarn according to claim 5, wherein the mass ratio of the N-methyldiethanolamine, the 1, 4-butanediol and the isophorone diisocyanate is 10:9-12:50-52.
  7. 7. The process for spinning ramie vortex spun yarn according to claim 5, wherein the mass ratio of the para-hydroxyanisole, the hydroxyethyl acrylate, the castor oil, the 1, 3-propane sultone and the methanol is 0.01-0.03:7-10:7-10:10-12:40-50.
  8. 8. The process for spinning ramie vortex spun yarn of claim 5 wherein the catalyst is one or both of bismuth neodecanoate and bismuth isooctanoate.

Description

Process method for spinning ramie vortex spun yarn in high-proportion color spinning mode Technical Field The application relates to the technical field of spinning yarn preparation, in particular to a process method for spinning ramie vortex spinning yarns by high-proportion color spinning. Background Ramie is one of the ancient important fiber crops in China, is originally planted in the southwest area of China, is planted in some places in the middle and downstream of the Yangtze river of the New stone era, and is internationally called as Chinese grass, wherein the yield of the ramie in China is about more than 90% of the yield of the ramie in the whole world. Among various hemp fibers, the ramie fiber is longest, has the greatest strength, is slightly thick, is white in color, has silk-like luster, is good in ventilation, is fast in heat transfer, and has a cool feeling when being worn, and the refined ramie made of the ramie is fine and dry. However, the ramie belongs to natural fibers, the cohesion force between the fibers is small, hairiness, broken ends and the like are easy to occur in the spinning process, at present, the technical improvement of the spinning processing of the ramie is mostly dependent on the modification of special spinning equipment, for example, a compact spinning technology is adopted to optimize the yarn structure and reduce the generation of hairiness, but the problems of high rigidity and easy brittle fracture of the ramie fibers are not fundamentally solved, so that a technological method capable of improving the spinning performance of the ramie raw material is needed. Disclosure of Invention In order to solve the problems in the prior art, the application provides a process method for spinning ramie vortex spinning yarns by high-proportion color spinning. In a first aspect, the application provides a process method for spinning ramie vortex spun yarns by high-proportion color spinning, which adopts the following technical scheme: A process method for spinning ramie vortex spinning yarns by high-proportion color spinning comprises the following steps: (1) Preparing raw materials, namely 70-75% of ramie fibers and 20-35% of vinylon; (2) Oiling treatment, namely pre-disintegrating the ramie fibers and the vinylon for 2-4 days by using a self-oiling agent; (3) Mixing cotton and carding, namely mixing the oiled ramie fibers with vinylon, and carding to obtain cotton sliver; (4) Drawing, namely drawing the cotton sliver by 2-3 times, wherein the number of first drawing yarns is 6, the total drawing multiple is 6-7 times, the number of second drawing yarns is 8, the total drawing multiple is 7-9 times, the number of third drawing yarns is 8, and the total drawing multiple is 7-9 times to prepare a cooked sliver; (5) Vortex spinning, namely drafting, gathering, twisting and winding the cooked sliver to form the vortex spun ramie yarn with high-proportion color spinning. According to the technical scheme, the high-proportion ramie and viscose glue are adopted, on the basis of maximally retaining natural excellent properties of moisture absorption, antibiosis, bacteriostasis and the like of the ramie fibers, the defects of high rigidity and poor extensibility of the ramie fibers are effectively overcome by means of flexibility and cohesion of vinylon, the whole spinnability is improved, the self-made oiling agent can fully permeate the inside of the ramie and vinylon after oiling for 2-4 days, meanwhile, a uniform and stable lubricating film is formed on the surface of the fibers, on the one hand, friction coefficients among the fibers and between the fibers and processing components are remarkably reduced, fiber brittle fracture in high-speed processing is reduced, on the other hand, the moisture absorption and antistatic properties of the fibers are improved, the problems of fiber winding, flying and color point unevenness caused by static electricity are avoided, the spinning process is ensured to be stable, multiple drawing and drafting are realized, the uniform mixing and orientation of the fibers are reduced, the short fibers and neps in the cooked strips are more regular after the drawing, the cohesion is enhanced, the gathering effect of vortex spinning is realized, and the fibers form a compact wrapping structure on the surface of the yarn is reduced. Optionally, the self-made oiling agent comprises the following raw materials in percentage by mass: 5 to 10 percent of white vinegar, 2 to 5 percent of soap powder, 1 to 3 percent of modified silicone oil, 0.8 to 1.5 percent of modified resin, 1 to 3 percent of glycerol and water which are added to 100 percent. Optionally, the preparation method of the modified silicone oil comprises the following steps: (1) Mixing hydrogen-containing silicone oil and allyl polyether, heating to 120-140 ℃, introducing nitrogen for 2-3h, cooling to 80-90 ℃ after water removal, adding an isopropanol-chloroplatinic acid catalyst, preserving he