Search

CN-121381242-B - Production method of waterproof nylon yarn

CN121381242BCN 121381242 BCN121381242 BCN 121381242BCN-121381242-B

Abstract

The invention relates to the technical field of textile, in particular to a production method of waterproof nylon yarns. The production method of the waterproof nylon yarn comprises the following steps of sequentially carrying out plasma treatment and silane coupling agent modification on nylon filaments to obtain modified nylon filaments, mixing the modified nylon filaments and polyester elastic filaments, sequentially carrying out merging, twisting and network treatment to obtain composite filaments, soaking the composite filaments in fluorine-free composite waterproof finishing liquid to carry out finishing to obtain the waterproof filaments, and sequentially carrying out first curing and second curing on the waterproof filaments to obtain the waterproof nylon yarn after post treatment. The invention constructs a complete process system comprising fiber surface cooperative modification, yarn structure optimization, multifunctional fluorine-free composite finishing and gradient curing crosslinking, and finally obtains the high-quality waterproof nylon yarn with durable waterproof performance, excellent mechanical property, soft hand feeling and environmental friendliness.

Inventors

  • LIN SHENG
  • You Julan
  • HUANG CHUNLIN

Assignees

  • 江西申华新材料有限公司

Dates

Publication Date
20260508
Application Date
20251208

Claims (7)

  1. 1. The production method of the waterproof nylon yarn is characterized by comprising the following steps of: S1, sequentially carrying out plasma treatment and silane coupling agent modification on nylon filaments to obtain modified nylon filaments; S2, mixing the modified nylon filaments and the polyester elastic filaments, and sequentially performing combination, twisting and network treatment to obtain composite filaments; S3, soaking the composite filament in a fluorine-free composite waterproof finishing liquid to finish the composite filament, wherein in S3, the fluorine-free composite waterproof finishing liquid comprises 9-9.5% of polyether modified polysiloxane, 3.8-4.2% of nano silicon dioxide dispersion liquid, 3.2-3.4% of aziridine cross-linking agent, 1.6-1.8% of xanthan gum, 4.5-5.5% of polyether modified silicone oil and 0.75-0.85g/L of penetrating agent JFC; S4, sequentially performing first curing and second curing on the waterproof filaments, and performing post-treatment to obtain the waterproof nylon yarn, wherein in S4, the temperature of the first curing is 112-114 ℃ and the time is 9-10min, and the temperature of the second curing is 136-138 ℃ and the time is 11-12min.
  2. 2. The method for producing the waterproof nylon yarn according to claim 1, wherein in the step S1, the plasma treatment process parameters are that the working gas is a mixed gas of argon and oxygen, the volume fraction of the oxygen is 6-7%, the pressure is 0.07-0.08MPa, the power is 42-48W, and the treatment time is 9-11S.
  3. 3. The method for producing the waterproof nylon yarn according to claim 1, wherein in S1, the treatment liquid adopted by the modification of the silane coupling agent is an ethanol solution of KH-560, the mass fraction of KH-560 in the ethanol solution of KH-560 is 1.9-2.1%, the modification temperature of the silane coupling agent is 36-38 ℃ and the modification time is 16-19min.
  4. 4. The method for producing waterproof nylon yarn according to claim 1, wherein in S2, the mass ratio of the modified nylon filaments to the polyester elastic filaments is 78-82:18-22, the twist degree of twisting is 395-405 twists/m, and the speed is 920-980m/min.
  5. 5. The method for producing waterproof nylon yarn according to claim 1, wherein in S2, the network point density of the network treatment is 48-55/m and the network pressure is 0.45-0.55MPa.
  6. 6. The method according to claim 5, wherein in S3, the pH value of the fluorine-free composite waterproof finishing liquid is 5.4-5.6.
  7. 7. The method for producing waterproof nylon yarn according to claim 1, wherein in S3, the bath ratio of the finishing is 1:29-31, the temperature is 49-51 ℃ and the time is 32-34min.

Description

Production method of waterproof nylon yarn Technical Field The invention relates to the technical field of textile, in particular to a production method of waterproof nylon yarns. Background The nylon (polyamide fiber) has the characteristics of high strength, good wear resistance, excellent elasticity and the like, and is widely applied to the fields of clothing, home textiles, industrial textiles and the like. With the rise of consumer demand for functional textiles, the market demand for waterproof nylon yarns is growing. The existing production method of the waterproof nylon yarn mainly comprises a surface coating method and a fiber blending method. The surface coating method is to coat a single waterproof agent (such as fluorine-containing compound) on the surface of nylon yarn, but the waterproof agent is not firmly combined with the fiber, the waterproof performance is rapidly reduced after repeated washing, the coating is easy to cause stiff hand feeling of the yarn, and the fiber blending method realizes waterproof by blending nylon fiber and fiber with excellent waterproof performance, but has the defects of uneven dispersion of waterproof components, loose yarn structure and poor waterproof uniformity. In addition, part of the methods adopt a single type waterproof finishing agent, so that the durability, wear resistance and soft hand feeling of the waterproof are difficult to be simultaneously achieved, and the application range of the product is limited. Therefore, the development of the waterproof nylon yarn production method with good waterproof durability, soft hand feeling and excellent strength has important significance. Disclosure of Invention Aiming at the problems in the prior art, the invention provides a production method of waterproof nylon yarn, which is characterized in that a set of complete process system comprising fiber surface collaborative modification, yarn structure optimization, multifunctional fluorine-free composite finishing and gradient curing crosslinking is constructed, and finally, the high-quality waterproof nylon yarn with lasting waterproof performance, excellent mechanical performance, soft hand feeling and environmental friendliness is obtained. In order to achieve the above purpose, the invention provides a production method of waterproof nylon yarn, which comprises the following steps: S1, sequentially carrying out plasma treatment and silane coupling agent modification on nylon filaments to obtain modified nylon filaments; S2, mixing the modified nylon filaments and the polyester elastic filaments, and sequentially performing combination, twisting and network treatment to obtain composite filaments; s3, soaking the composite filaments in a fluorine-free composite waterproof finishing liquid for finishing to obtain waterproof filaments; s4, sequentially performing first curing and second curing on the waterproof filaments, and performing post-treatment to obtain the waterproof nylon yarn. Preferably, in S1, the technological parameters of the plasma treatment are that the working gas is a mixed gas of argon and oxygen, the volume fraction of the oxygen is 6-7%, the pressure is 0.07-0.08MPa, the power is 42-48W, and the treatment time is 9-11S. Preferably, in S1, the treatment fluid adopted for modifying the silane coupling agent is ethanol solution of KH-560, the mass fraction of KH-560 in the ethanol solution of KH-560 is 1.9-2.1%, the modifying temperature of the silane coupling agent is 36-38 ℃ and the modifying time is 16-19min. Preferably, in S2, the mass ratio of the modified nylon filaments to the polyester elastic filaments is 78-82:18-22, the twist degree of twisting is 395-405 twists/m, and the speed is 920-980m/min. Preferably, in S2, the network point density of the network treatment is 48-55/m, and the network pressure is 0.45-0.55MPa. Preferably, in S3, the fluorine-free composite waterproof finishing liquid comprises the following components: 9-9.5% of polyether modified polysiloxane, 3.8-4.2% of nano silicon dioxide dispersion liquid, 3.2-3.4% of aziridine crosslinking agent, 1.6-1.8% of xanthan gum, 4.5-5.5% of polyether modified silicone oil and 0.75-0.85g/L of penetrating agent JFC. Preferably, in the S3, the pH value of the fluorine-free composite waterproof finishing liquid is 5.4-5.6. Preferably, in S3, the bath ratio of the finishing is 1:29-31, the temperature is 49-51 ℃ and the time is 32-34min. Preferably, in S4, the temperature of the first curing is 112-114 ℃ and the time is 9-10min. Preferably, in S4, the second curing temperature is 136-138 ℃ and the time is 11-12min. The beneficial effects of the invention are as follows: 1. The invention provides a production method of waterproof nylon yarn, which comprises the following steps of sequentially carrying out plasma treatment and silane coupling agent modification on nylon filaments to obtain modified nylon filaments, mixing the modified nylon filaments and polyester elastic filam