CN107938052B

CN107938052B - Online preparation method of hydrophobic yarn of embedded composite spinning

Info

Publication number: CN107938052B
Application number: CN201711325234.3A
Authority: CN
Inventors: 曹根阳; 杨冯丽; 徐卫林; 李文斌; 柯贵珍
Original assignee: Wuhan Textile University
Current assignee: Wuhan Textile University
Priority date: 2017-12-13
Filing date: 2017-12-13
Publication date: 2020-08-07
Anticipated expiration: 2037-12-13
Also published as: CN107938052A

Abstract

The invention relates to an on-line preparation method of hydrophobic yarns of embedded composite yarns, and belongs to the technical field of textile processing. The invention utilizes the characteristic that the embedded composite spinning method has the characteristic that the filament tightly wraps the short fiber, a modification device is arranged at the running path of the viscose filament between a filament tube and a front roller on a ring spinning frame, and a drying device is arranged at the running path of the spun yarn between the front roller and a spun yarn tube. The modifying device applies modifying liquid to the viscose filament yarn, the drying device dries the spun yarn formed by twisting, the viscose filament yarn is wrapped on the outer side of the cotton roving in a space spiral manner, and the modifying liquid on the viscose filament yarn is transferred to the cotton fiber in contact with the viscose filament yarn to prepare the hydrophobic yarn. The invention changes the conventional method for subsequent modification of the existing yarn or fabric, synchronously carries out spinning and modification, shortens the production period, saves the production cost and simplifies the operation steps.

Description

Online preparation method of hydrophobic yarn of embedded composite spinning

Technical Field

The invention relates to an on-line preparation method of hydrophobic yarns of embedded composite yarns, and belongs to the technical field of textile processing.

Background

The embedded composite spinning is a novel multifunctional spinning technology. For example, the publication time of the Chinese publication "journal of textile" is 6 months in 2010, and the article name is "analysis of the principle of the efficient short-flow embedded composite spinning technology", the principle of the technology is that two cotton rovings are respectively drafted by a rear roller, a middle roller and a front roller, two filaments directly pass through the front roller, one filament and one cotton roving form a twisting triangular area at the front nip of the front roller to be spun into a spun yarn, the other filament and the other cotton roving form another twisting triangular area at the front nip of the front roller to be spun into another spun yarn, the filaments in the two spun yarns are distributed on the outer side, and short fiber strands are wrapped inside. The two spun yarns form a third twisting triangular area and are twisted at the triangular area to form a spun yarn. Therefore, the embedded composite spinning method has the characteristic that the filament tightly wraps the short fiber, and the spinning method can greatly improve the fiber utilization rate, the yarn strength and the yarn quality. The method has the disadvantage that if special performance is required to be endowed to the yarn, a modification procedure is required to be added in the yarn post-finishing procedure.

In order to improve the moisture absorption, quick drying and wet and hot comfort performance of moisture absorption fibers such as viscose, cotton and the like, there is a report of preparing moisture absorption and wicking yarns by modifying the moisture absorption fibers, for example, the publication of Chinese publication 'cotton textile technology' has publication time of 2007 year 5, the article name is 'design and development of moisture absorption and quick drying function pure viscose yarn', the document introduces blending of viscose fibers with hydrophobic finish and unmodified viscose fibers, and designs and develops a novel structure pure viscose yarn with hydrophobic outer layer and hydrophilic inner layer. The yarn prepared by the method can effectively discharge water to the outside, and the yarn can be proved to have the performance of moisture absorption and pleasant feeling. The method has the disadvantages that the two steps of fiber modification and spinning are asynchronous, the production period is prolonged, the production link is complicated, and the production cost is increased.

Disclosure of Invention

In view of the above problems, the present invention provides an on-line preparation method of hydrophobic yarn for embedded composite spinning, and in order to achieve the above object, the technical solution is as follows:

an on-line preparation method of hydrophobic yarn of embedded composite spinning is aimed at embedded composite spinning, and includes that a modification device is arranged in the running path of a first viscose filament yarn and a second viscose filament yarn on a ring spinning frame, the modification device is composed of a flow control device and a wetting device, a drying device is arranged between a front roller and a ring bobbin on the ring spinning frame, the first viscose filament yarn and the second viscose filament yarn are applied with modification liquid by the modification device and then run to the front roller, and are converged with a first cotton roving and a second cotton roving which run to the front roller after being drafted by a back roller and a middle roller, the first viscose filament yarn applied with the modification liquid and the first cotton roving are twisted at the front jaw of the front roller to form first spun yarn, the second viscose filament yarn applied with the modification liquid and the second cotton roving are twisted at the front jaw of the front roller to form second spun yarn, and the first spun yarn, And twisting the second spun yarn to form a third spun yarn, and drying and winding the third spun yarn on a spun yarn tube by using a drying device. The hydrophobic finishing agent is prepared by blending absolute ethyl alcohol and polysiloxane, and the mass ratio of the absolute ethyl alcohol to the polysiloxane is 95:5-65: 35.

Due to the adoption of the technical scheme, the invention utilizes the characteristic that the embedded composite spinning method has the tight wrapping of the short fibers by the filaments, and the polyester filaments are modified by the modifying device in the embedded spinning process and then twisted with the cotton roving to obtain the yarn with the hydrophobic function. The viscose filament yarn is a hydrophilic filament yarn, the surface of the first viscose filament yarn and the surface of the second viscose filament yarn are fully covered with the modifying liquid after the modifying liquid is applied to the first viscose filament yarn and the second viscose filament yarn by the modifying device, when the viscose filament yarn and the cotton roving which are fully covered with the modifying liquid are mutually wound at the front jaw due to twisting, the viscose filament yarn is spirally wrapped at the outer side of the cotton roving in space, and the modifying liquid on the surface of the viscose filament yarn can be partially transferred to the cotton fibers which are in contact with the viscose filament yarn. Because the modifying solution is composed of absolute ethyl alcohol and polyorganosiloxane, the content of the ethyl alcohol is over 65 percent, and the ethyl alcohol has good infiltration performance, when the modifying solution on the viscose filament yarn is contacted with the cotton fiber, the ethyl alcohol can drive the polyorganosiloxane to transfer to the cotton fiber direction, the first spun yarn formed by the first twisting triangular area presents a state that one section of the viscose filament yarn is one section of the cotton fiber at the length direction side, and the modifying solution on the viscose filament yarn is transferred to the cotton fiber contacted with the viscose filament yarn. Since the process of forming the second yarn coincides with the first yarn, the second yarn also assumes the same state as the first yarn in the longitudinal direction. The first spun yarn and the second spun yarn form a third twisting triangular space due to twisting, the third spun yarn is obtained after twisting, because the first spun yarn and the second spun yarn are spirally wound, the contacted part can be transferred by the modification liquid, the modification liquid on the viscose filament yarn in the first spun yarn can be transferred to the second spun yarn contacted with the first spun yarn, the modification liquid on the second spun yarn can be transferred to the first spun yarn contacted with the second spun yarn, and the hydrophobic performance of the obtained third spun yarn is effectively improved compared with the unmodified cotton/viscose blended yarn of the embedded composite spun yarn.

The invention changes the hydrosolvent selected in the conventional modified solution into the organic solvent ethanol, and takes the volatile property of the ethanol as the solvent of the modified solution; the drying device provided by the invention further accelerates the volatilization speed of ethanol, and realizes the purpose of quickly drying yarns, which cannot be realized by adopting water as a solvent in the conventional process. Therefore, the third spun yarn is dried by the drying device, and the ethanol is volatilized to leave only the modified substance, so that the third spun yarn is wound on the spun yarn bobbin in a dried state. Compared with the conventional process for modifying the yarns after spinning, the method does not need to increase modification equipment, and achieves the aims of reducing the production cost and the production period. Compared with the unmodified cotton/viscose blended yarn of the embedded composite spinning, the hydrophobicity of the yarn is effectively improved.

Drawings

Fig. 1 is a schematic diagram of the working principle of the present invention.

Fig. 2 is a schematic view of the twisting state of the yarn of the present invention.

Detailed Description

The invention is described in further detail below with reference to the figures and the embodiments, see the figures.

An online preparation method of hydrophobic yarns of embedded composite spinning is characterized in that a modification device 3 is arranged in a running path of a first viscose filament yarn 1 and a second viscose filament yarn 2 on a ring spinning frame, the modification device 3 is composed of a flow control device and a wetting device, the flow control device can adopt an injection pump or a peristaltic pump, the wetting device adopts a sponge wetting device, the flow control device is connected with the wetting device through a hose, the flow control device adjusts the flowing speed of a modified liquid, the wetting device applies the modified liquid to the two viscose filament yarns, a hydrophobic finishing agent is prepared by blending absolute ethyl alcohol and polysiloxane, and the mass ratio of the absolute ethyl alcohol to the polysiloxane is 95:5-65: 35. The flow rate of the flow control device in the modification device 3 is 40-70 drops/min, a drying device 6 is arranged between a front roller 4 and a ring bobbin 7 on a ring spinning frame, the drying device 6 can adopt an infrared radiation heater or a resistance heater, the first viscose filament yarn 1 and the second viscose filament yarn 2 are applied with the modification liquid by the modification device 3 and then run to the front roller 4, and are converged with a first cotton roving 10 and a second cotton roving 11 which run to the front roller 4 after being drafted by a back roller 9 and a middle roller 8, the first viscose filament yarn 1 and the first cotton roving 10 which are applied with the modification liquid form a twisting triangular area at the front jaw of the front roller and are twisted to form a first spun yarn 12, the second viscose filament yarn 2 and the second cotton roving 11 which are applied with the modification liquid form another twisting triangular area at the front jaw of the front roller and are twisted to form a second spun yarn 13, the first spun yarn 12, the second viscose filament yarn 2 and the second spun yarn 11 are, The second spun yarn 13 is twisted by a third twisting triangular area to form a third spun yarn 5, and the third spun yarn 5 is dried and wound on a spun yarn tube 7 by a drying device, wherein the drying temperature is 30-60 ℃.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The method is as described above.

Example 1

A modification device is arranged in a running path of a first viscose filament yarn and a second viscose filament yarn on a ring spinning frame, the modification device is composed of a flow control device and a wetting device, the flow control device adopts an injection pump, the wetting device adopts a sponge wetting device, the flow control device is connected with the wetting device through a hose, the flow control device adjusts the flowing speed of the modification liquid, the wetting device applies the modification liquid to the two viscose filament yarns, a hydrophobic finishing agent is prepared from absolute ethyl alcohol and polysiloxane, and the mass ratio of the absolute ethyl alcohol to the polysiloxane is 95: 5. The flow rate of a flow control device in the modification device is 40 drops/min, a drying device is arranged between a front roller and a ring bobbin on a ring spinning frame, the drying device adopts a resistance heater, the first viscose filament yarn and the second viscose filament yarn are applied with the modification liquid by the modification device and then run to the front roller, and are converged with the first cotton roving and the second cotton roving which run to the front roller after being drafted by a back roller and a middle roller, the first viscose filament yarn applied with the modification liquid and the first cotton roving form a twisting triangular area at a front jaw of the front roller and form first spun yarn, the second viscose filament yarn applied with the modification liquid and the second cotton roving form another twisting triangular area at the front jaw of the front roller and form second spun yarn, the first spun yarn and the second spun yarn are twisted by a third twisting triangular area to form third spun yarn, and the third spun yarn is dried and wound on the ring bobbin by the drying device, the drying temperature is 30 ℃. The prepared yarn was tested for its hydrophobic properties, and the specific test results are shown in table 1.

Example 2

A modification device is arranged in a running path of a first viscose filament yarn and a second viscose filament yarn on a ring spinning frame, the modification device is composed of a flow control device and a wetting device, the flow control device adopts a peristaltic pump, the wetting device adopts a sponge wetting device, the flow control device is connected with the wetting device through a hose, the flow control device adjusts the flowing speed of the modification liquid, the wetting device applies the modification liquid to the two viscose filament yarns, a hydrophobic finishing agent is prepared from absolute ethyl alcohol and polysiloxane, and the mass ratio of the absolute ethyl alcohol to the polysiloxane is 85: 15. The flow rate of a flow control device in the modification device is 50 drops/min, a drying device is arranged between a front roller and a ring bobbin on a ring spinning frame, the drying device adopts an infrared radiation heater, the first viscose filament yarn and the second viscose filament yarn are applied with the modification liquid by the modification device and then run to the front roller, and are converged with the first cotton roving and the second cotton roving which run to the front roller after being drafted by a back roller and a middle roller, the first viscose filament yarn applied with the modification liquid and the first cotton roving form a twisting triangular area at a front jaw of the front roller and form first spun yarn, the second viscose filament yarn applied with the modification liquid and the second cotton roving form another twisting triangular area at the front jaw of the front roller and form second spun yarn, the first spun yarn and the second spun yarn are twisted by a third twisting triangular area to form third spun yarn, and the third spun yarn is dried and wound on the ring bobbin by the drying device, the drying temperature is 40 ℃. The prepared yarn was tested for its hydrophobic properties, and the specific test results are shown in table 1.

Example 3

A modification device is arranged in a running path of a first viscose filament yarn and a second viscose filament yarn on a ring spinning frame, the modification device is composed of a flow control device and a wetting device, the flow control device adopts an injection pump, the wetting device adopts a sponge wetting device, the flow control device is connected with the wetting device through a hose, the flow control device adjusts the flowing speed of the modification liquid, the wetting device applies the modification liquid to the two viscose filament yarns, a hydrophobic finishing agent is prepared from absolute ethyl alcohol and polysiloxane, and the mass ratio of the absolute ethyl alcohol to the polysiloxane is 75: 25. The flow rate of a flow control device in the modification device is 60 drops/min, a drying device is arranged between a front roller and a ring bobbin on a ring spinning frame, the drying device adopts a resistance heater, the first viscose filament yarn and the second viscose filament yarn are applied with the modification liquid by the modification device and then run to the front roller, and are converged with the first cotton roving and the second cotton roving which run to the front roller after being drafted by a back roller and a middle roller, the first viscose filament yarn applied with the modification liquid and the first cotton roving form a twisting triangular area at the front jaw of the front roller and form first spun yarn, the second viscose filament yarn applied with the modification liquid and the second cotton roving form another twisting triangular area at the front jaw of the front roller and form second spun yarn, the first spun yarn and the second spun yarn are twisted by a third twisting triangular area to form third spun yarn, and the third spun yarn is dried and wound on the ring bobbin by the drying device, the drying temperature is 50 ℃. The prepared yarn was tested for its hydrophobic properties, and the specific test results are shown in table 1.

Example 4

A modification device is arranged in a running path of a first viscose filament yarn and a second viscose filament yarn on a ring spinning frame, the modification device is composed of a flow control device and a wetting device, the flow control device adopts a peristaltic pump, the wetting device adopts a sponge wetting device, the flow control device is connected with the wetting device through a hose, the flow control device adjusts the flowing speed of the modification liquid, the wetting device applies the modification liquid to the two viscose filament yarns, a hydrophobic finishing agent is prepared from absolute ethyl alcohol and polysiloxane, and the mass ratio of the absolute ethyl alcohol to the polysiloxane is 65: 35. The flow rate of a flow control device in the modification device is 70 drops/min, a drying device is arranged between a front roller and a ring bobbin on a ring spinning frame, the drying device adopts an infrared radiation heater, the first viscose filament yarn and the second viscose filament yarn are applied with the modification liquid by the modification device and then run to the front roller, and are converged with the first cotton roving and the second cotton roving which run to the front roller after being drafted by a back roller and a middle roller, the first viscose filament yarn applied with the modification liquid and the first cotton roving form a twisting triangular area at a front jaw of the front roller and form first spun yarn, the second viscose filament yarn applied with the modification liquid and the second cotton roving form another twisting triangular area at the front jaw of the front roller and form second spun yarn, the first spun yarn and the second spun yarn are twisted by a third twisting triangular area to form third spun yarn, and the third spun yarn is dried and wound on the ring bobbin by the drying device, the drying temperature is 60 ℃. The prepared yarn was tested for its hydrophobic properties, and the specific test results are shown in table 1.

In order to compare the technical advantages of the scheme, a group of unmodified cotton/viscose blended yarns are prepared by an embedded composite spinning method to serve as a comparison sample, and then four groups of modified cotton/viscose blended yarns are prepared according to the embodiment 1-4, five groups of yarns are baked for 2min at the temperature of 130 ℃, then five groups of yarns are boiled and dried, and are placed in a constant-temperature and constant-humidity environment for 24 hours, the temperature in the constant-temperature and constant-humidity environment is 20 ℃, the relative humidity is 65%, and the surface contact angles of the five groups of samples are tested under the condition, the test method is that the five groups of yarn samples are respectively and closely arranged into samples with the size of 1cm × 3cm and are placed on a contact angle tester, 2.5 mu l of water drops are recorded to the samples, and the surface contact angles after a certain time, and specific test results are shown in a table 1:

TABLE 1 surface contact Angle of the yarns

Since polyorganosiloxane is a hydrophobic substance, the produced yarn has increased hydrophobic properties. As can be seen from the data in Table 1, the larger the amount of polyorganosiloxane used, the larger the surface contact angle of the yarn, and the better the effect of the in-line modification.

Claims

1. An on-line preparation method of hydrophobic yarn of embedded composite spinning is characterized in that: the method is characterized in that a modifying device (3) is arranged in a running path from a first viscose filament yarn (1) to a second viscose filament yarn (2) to a front roller (4) on a ring spinning frame, the modifying device (3) is used for applying a hydrophobic finishing agent to the first viscose filament yarn (1) and the second viscose filament yarn (2), a drying device (6) is arranged between the front roller (4) and a ring bobbin (7) on the ring spinning frame, the first viscose filament yarn (1) and the second viscose filament yarn (2) run to the front roller (4) after being applied with the hydrophobic finishing agent through the modifying device (3), and are converged with a first cotton roving (10) and a second cotton roving (11) which run to the front roller (4) after being drafted by a rear roller (9) and a middle roller (8), the first viscose filament yarn (1) and the first cotton roving (10) applied with the hydrophobic finishing agent are twisted at a front jaw of the front roller (4) to form a first spun yarn (12), the second viscose filament yarn (2) and the second cotton roving yarn (11) which are applied with the hydrophobic finishing agent are twisted at a front jaw of a front roller (4) to form a second spun yarn (13), the first viscose filament yarn (1) and the second viscose filament yarn (2) are respectively wrapped and wound on the outer sides of the first cotton roving yarn (10) and the second cotton roving yarn (11) in a space spiral shape, the hydrophobic finishing agent on the surfaces of the viscose filament yarns is partially transferred to cotton fibers which are in contact with the viscose filament yarns, the first spun yarn (12) and the second spun yarn (13) are twisted to form a third spun yarn (5) with a hydrophobic function, and the third spun yarn (5) is dried and wound on a spun yarn tube (7) through a drying device (6); the hydrophobic finishing agent is prepared by blending absolute ethyl alcohol and polysiloxane, and the mass ratio of the absolute ethyl alcohol to the polysiloxane is 65: 35.

2. The on-line preparation method of the embedded composite spun hydrophobic yarn as claimed in claim 1, wherein: the modifying device (3) is composed of a flow control device and a wetting device.