CN118895587A - A method for preparing polyamide 56 stretch yarn - Google Patents

A method for preparing polyamide 56 stretch yarn Download PDF

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Publication number
CN118895587A
CN118895587A CN202411238586.5A CN202411238586A CN118895587A CN 118895587 A CN118895587 A CN 118895587A CN 202411238586 A CN202411238586 A CN 202411238586A CN 118895587 A CN118895587 A CN 118895587A
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China
Prior art keywords
polyamide
plate
friction
preparation
friction plate
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CN202411238586.5A
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Chinese (zh)
Inventor
孙朝续
刘修才
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Cathay R&D Center Co Ltd
Cathay Jinxiang Biomaterial Co Ltd
CIBT America Inc
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Cathay R&D Center Co Ltd
Cathay Jinxiang Biomaterial Co Ltd
CIBT America Inc
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Application filed by Cathay R&D Center Co Ltd, Cathay Jinxiang Biomaterial Co Ltd, CIBT America Inc filed Critical Cathay R&D Center Co Ltd
Priority to CN202411238586.5A priority Critical patent/CN118895587A/en
Publication of CN118895587A publication Critical patent/CN118895587A/en
Pending legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/0286—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist characterised by the use of certain filaments, fibres or yarns
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D02G1/08—Rollers or other friction causing elements
    • D02G1/082—Rollers or other friction causing elements with the periphery of at least one disc
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

The invention provides a preparation method of polyamide 56 textured yarn, which comprises the following steps: (1) Passing the polyamide 56 pre-oriented yarn through a yarn guide through a1 st roller; (2) Then sequentially carrying out hot stretching, shaping and false twisting, and passing through a 2 nd roller; (3) Then processing by a network nozzle, and obtaining a final product by a 3 rd roller and winding; the friction plate for false twisting is a C-shaped plate, a D-shaped plate or a PU-shaped plate, the thickness of the friction plate is less than or equal to 10mm, and the friction coefficient of the friction plate is less than or equal to 1.0. The preparation method of the polyamide 56 textured yarn does not depend on petroleum resources and does not cause serious pollution to the environment, and simultaneously can reduce the emission of carbon dioxide and the generation of greenhouse effect, and the prepared polyamide 56 textured yarn has better mechanical property and dyeing uniformity, improves the production efficiency, reduces the production cost and has more stable fiber mechanical property index.

Description

Preparation method of polyamide 56 textured yarn
The application relates to a divisional application, the application number of the main application is 2021104825200, the application date is 2021, 4 months and 30 days, and the application is named as a polyamide 56 stretch yarn and a preparation method thereof.
Technical Field
The invention relates to a polyamide 56 textured yarn and a preparation method thereof.
Background
The bio-based polyamide 56 raw material and the processing process are environment-friendly, and the prepared fiber has better moisture absorption and quick drying performance (the official moisture regain is 6% and is more similar to that of cotton, the official moisture regain of common nylon is 4-5%), skin-friendly performance, wear resistance, good softness, low-temperature dyeing characteristics and the like, and can be widely applied to the field of filaments for clothing.
The existing administration fields comprise pre-oriented yarn (POY), textured yarn (DTY), fully drawn yarn, medium oriented yarn and high oriented yarn, and the textured yarn has good bulkiness and elasticity and is widely applied in the administration fields.
Patent application document CN 103966681A discloses a POY-DTY production method of nylon 56DTY (polyamide 56 plus stretch yarn), wherein the temperature of a deformation hot box is 210-235 ℃, the D/Y ratio is 1.1-1.5, the draft multiple is 1.1-1.3, and the production stability, the fiber mechanical property and the dyeing property of the obtained nylon 56DTY are deviated.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the existing polyamide 56 textured yarn production stability and deviation of the mechanical properties and dyeing properties of fibers, and provide a polyamide 56 textured yarn with excellent production stability, mechanical properties and dyeing properties of fibers and a preparation method thereof.
The invention solves the technical problems by the following technical proposal:
The invention provides a polyamide 56 textured yarn, wherein the crystallinity of the polyamide 56 textured yarn is more than or equal to 70.0%, and/or the orientation degree of the polyamide 56 textured yarn is more than or equal to 80.0%.
Preferably, the polyamide 56 textured yarn has a crystallinity of 70.0% to 85.0%, preferably 73.0% to 85.0%, for example 82.5%, 80.2%, 79.7%, 79.5%, 77.4%, 76.8%, 76.5%, 75.8%, 75.5%, 75.4%, 75.0%, 74.9%, 74.2%.
Preferably, the polyamide 56 is textured to a degree of orientation of 80.0% to 95%, preferably 83.0% to 92%, for example 90.3%, 89.7%, 88.4%, 88.2%, 86.5%, 85.9%, 85.4%, 84.9%, 84.5%, 84.3%, 84.2%, 84.0%, 83.5%.
Preferably, the breaking strength of the polyamide 56 textured yarn is 3.8 to 5.2cN/dtex, preferably, the breaking strength of the polyamide 56 textured yarn is 4.0 to 5.0cN/dtex, more preferably 4.1 to 4.8cN/dtex, still more preferably 4.2 to 4.6cN/dtex, for example, 4.3cN/dtex or 4.4cN/dtex.
Preferably, the polyamide 56 textured yarn has a coefficient of variation in breaking strength of 3% or less, more preferably 2.5% or less, still more preferably 2% or less, still more preferably 1.5% or less, for example 1.3%, 1% or 0.8% or less.
Preferably, the polyamide 56 textured yarn has an elongation at break of 20 to 35%, more preferably 22 to 33%, still more preferably 24 to 30%, still more preferably 26 to 28%, for example 26.2%, 26.6% or 27%.
Preferably, the polyamide 56 textured yarn has an elongation at break coefficient of variation of 5% or less, more preferably 4% or less, still more preferably 3% or less, still more preferably 2% or less, for example 1.3% or 1.6%.
Preferably, the polyamide 56 textured yarn has a yarn breakage rate of 5% or less, more preferably 4% or less, still more preferably 3% or less, still more preferably 2% or less, for example 1.8% or less.
Preferably, the polyamide 56 textured yarn has a dyeing double A ratio of greater than or equal to 95%, more preferably greater than or equal to 96%, even more preferably greater than or equal to 97%, still even more preferably greater than or equal to 98%, for example 98.5%, 99% or 99.2%.
The invention provides a preparation method of polyamide 56 textured yarn, which comprises the following steps:
(1) Passing the polyamide 56 pre-oriented yarn through a yarn guide through a 1 st roller;
(2) Then sequentially carrying out hot stretching, shaping and false twisting, and passing through a 2 nd roller;
(3) Then processing by a network nozzle, and obtaining a final product by a3 rd roller and winding;
Wherein the false-twist friction plate is a C-shaped plate, a D-shaped plate or a PU-shaped plate.
In the present invention, the polyamide 56 pre-oriented yarn may be conventional in the art. The polyamide 56 pre-oriented yarn preferably has a gauge of 20 to 200dtex/7 to 144f, for example 93dtex/68f. The tenacity at break of the polyamide 56 pre-oriented yarn is preferably 3.0 to 3.8cN/dtex, for example 3.6cN/dtex. The elongation of the polyamide 56 pre-oriented yarn is preferably 65 to 95%, more preferably 68 to 90%, still more preferably 73 to 85%, for example 76.5%. And a shredder is further arranged between the silk guide and the 1 st roller.
In the present invention, the apparatus for hot stretching may employ a conventional apparatus for hot stretching in the art. The hot stretching device is preferably a hot box. The temperature of the hot stretching is preferably 170-200 ℃; more preferably 175 to 195 ℃, still more preferably 180 to 190 ℃, still more preferably 183 to 188 ℃, for example 185 ℃. The multiple of the hot stretching is preferably 1.25 to 1.40; more preferably 1.27 to 1.38, still more preferably 1.29 to 1.36, still more preferably 1.31 to 1.34, for example 1.32.
In the present invention, the shaping operation may be conventional in the art, and preferably cooling plate is used for cooling shaping. The temperature of the shaping is preferably room temperature.
In the present invention, the false twisting device generally adopts a false twister.
In the present invention, the friction plate is preferably a D-type plate or a PU-type plate; more preferably a PU type disc.
The thickness of the friction plate is preferably 10mm or less, more preferably 6 to 9mm.
When the friction plate is a C-shaped plate, the spacing of the friction plate is preferably not less than 0.65mm, more preferably 0.7 to 0.8mm, still more preferably 0.75mm. When the friction plate is the D-type plate or the PU-type plate, the spacing of the friction plate is preferably not less than 0.5mm, more preferably not less than 0.6mm, still more preferably 0.7 to 0.8mm, still more preferably 0.75mm. The friction plate preferably has a friction coefficient of 1.0 or less, more preferably 0.9 or less, still more preferably 0.8 or less, still more preferably 0.7 or less, for example 0.65 or less.
Preferably, the D/Y ratio of the false twist is 1.6-2.2; preferably 1.65 to 2.1, more preferably 1.70 to 2.0, still more preferably 1.75 to 1.9. Those skilled in the art will appreciate that the D/Y ratio refers to the ratio of the surface speed of the friction disk to the speed of the threadline exiting the false twister.
Preferably, the T 2 processing tension of the false twist is controlled to be 0.8 to 1.1 times of the T 1 processing tension; preferably 0.84 to 1.08 times, more preferably 0.88 to 1.06 times, still more preferably 0.90 to 1.04 times, for example 0.95 times. As known to those skilled in the art, T 1 refers to the twist tension during false twisting; t 2 refers to the untwisting tension during false twisting.
In the present invention, the person skilled in the art is aware of the detection of the tension at different locations, e.g. the T 1 process tension and the T 2 process tension, by means of a tension on-line monitor. Preferably, the false twist is passed through roller 2, preferably via an online tension monitor.
Preferably, the winding speed is 500-800 m/min; more preferably 520 to 750m/min, still more preferably 540 to 700m/min, still more preferably 560 to 650m/min, for example 600m/min.
In the present invention, those skilled in the art will appreciate that a break wire sensor and a tanker vessel are typically provided prior to winding. The broken wire inductor is used for recording the number of broken wires so as to detect the broken wire rate. The tanker is used for oiling, which can be done as is conventional in the art.
The invention provides a polyamide 56 textured yarn prepared by the preparation method of the polyamide 56 textured yarn.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the invention.
The reagents and materials used in the present invention are commercially available.
The invention has the positive progress effects that:
The raw materials for producing the polyamide 56 textured yarn are prepared by a biological method, are green materials, do not depend on petroleum resources, do not cause serious pollution to the environment, and can reduce the emission of carbon dioxide and reduce the generation of greenhouse effect. The polyamide 56 textured yarn has good mechanical property and dyeing uniformity. The polyamide 56 texturing yarn can be produced by adopting conventional polyamide 6 and polyamide 66 texturing equipment and simultaneously adjusting the false twist friction plate and the processing technology, the yarn breakage rate is greatly reduced, the production efficiency is improved, the production cost is reduced, and the fiber mechanical property index is more stable.
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention. The experimental methods, in which specific conditions are not noted in the following examples, were selected according to conventional methods and conditions, or according to the commercial specifications.
In the following examples of the invention, polyamide 56 pre-oriented yarn was used having a gauge of 93dtex/68f, a tenacity at break of 3.6cN/dtex and an elongation of 76.5%; the texturing device used was eFK PA texturing machine.
Example 1
Preparation of polyamide 56 textured yarn
Firstly, the polyamide 56 pre-oriented yarn is passed through a yarn guide to a roller 1, is subjected to hot stretching in a hot box, is cooled and shaped by adopting a cooling plate, obtains certain twist by a false twister, is passed through a tension on-line detector, the roller 2, is then networked by a network nozzle, is then oiled by a roller 3, a yarn breakage sensor and an oil tanker, and is finally wound to obtain the polyamide 56 textured yarn.
The friction plate adopted by the false twister is a C-shaped disc, the thickness is 6mm, and the interval between the friction plates is 0.75mm. The friction coefficient of the C-shaped disc friction plate is 0.65.
The hot box temperature was 185 ℃.
The stretching ratio was 1.32.
The D/Y ratio was 1.75.
The T2 machining tension is controlled to be 0.95 of the T1 tension.
The winding speed was 600m/min.
Example 2
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as that of the example 1, except that the friction plate adopts a D-shaped plate, and the spacing is 0.5mm.
Example 3
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as that of the example 2, except that the friction plate adopts a D-shaped plate, and the spacing is 0.75mm.
Example 4
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as that of the embodiment 1, except that a PU disc is adopted as the friction plate, the thickness is 9mm, and the interval is 0.5mm.
Example 5
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as that of the example 4, except that the friction plate adopts a PU disc, the thickness is 9mm, and the spacing is 0.75mm.
Example 6
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as in example 1, except that the temperature of the hot box is 195 ℃.
Example 7
Preparation of polyamide 56 textured yarn
The polyamide 56 textured yarn was prepared in the same manner as in example 1, except that the draw ratio was 1.27.
Example 8
Preparation of polyamide 56 textured yarn
The polyamide 56 textured yarn preparation method is the same as in example 1, except that the friction plate spacing is 0.65mm.
Example 9
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as in example 2, except that the friction plate spacing is 0.65mm.
Example 10
Preparation of polyamide 56 textured yarn
The polyamide 56 plus stretch yarn preparation method is the same as in example 1, except that the friction coefficient of the C-shaped disc friction plate is 0.8.
Example 11
Preparation of polyamide 56 textured yarn
The polyamide 56 textured yarn was prepared as in example 1, except that the D/Y ratio was 1.65.
Example 12
Preparation of polyamide 56 textured yarn
The polyamide 56 textured yarn was prepared in the same manner as in example 1, with the T2 process tension being controlled to 0.84 of the T1 tension.
Example 13
Preparation of polyamide 56 textured yarn
The polyamide 56 textured yarn was produced in the same manner as in example 1, and the winding speed was 750m/min (upper limit).
Comparative example 1
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as that of the example 1, except that the friction plate adopts a C-shaped plate, and the spacing is 0.5mm.
Comparative example 2
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as that of the example 1, except that the friction plate adopts a C-shaped plate, and the spacing is 0.6mm.
Comparative example 3
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as that of the example 1, except that a C-shaped disc is adopted as the friction plate, and the friction coefficient is 1.1.
Comparative example 4
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as that of the embodiment 1, except that a C-shaped disc is adopted as a friction plate, and the temperature of a hot box is 210 ℃.
Comparative example 5
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as that of the example 1, except that a C-shaped disc is adopted as a friction plate, and the T2 processing tension is controlled to be 0.5 of the T1 tension.
Comparative example 6
Preparation of polyamide 56 textured yarn
The polyamide 56 textured yarn preparation method is the same as in example 1, except that the friction plate is a C-shaped plate, and the D/Y ratio is 1.5.
Comparative example 7
Preparation of polyamide 56 textured yarn
The polyamide 56 textured yarn was prepared as in example 1, except that the friction plate was a C-plate, and the draw ratio was 1.1.
Comparative example 8
Preparation of polyamide 56 textured yarn
The polyamide 56 textured yarn preparation method is the same as in example 1, except that the friction plate is a C-shaped plate, and the winding speed is 850m/min.
Comparative example 9
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as that of the embodiment 1, except that a D-shaped disc is adopted as a friction plate, and the temperature of the hot box is 220 ℃.
Comparative example 10
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as that of the example 1, except that a D-type disc is adopted as a friction plate, and the T2 processing tension is controlled to be 0.6 of the T1 tension.
Comparative example 11
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as that of the embodiment 1, except that a PU disc is adopted as a friction plate, the thickness is 9mm, and the T2 processing tension is controlled to be 0.5 of the T1 tension.
Comparative example 12
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as that of the embodiment 1, except that a D-shaped disc is adopted as a friction plate, the temperature of the hot box is 210 ℃, and the T2 processing tension is controlled to be 0.5 of the T1 tension.
Comparative example 13
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as that of the example 1, except that a C-shaped disc is adopted as a friction plate, the temperature of the hot box is 220 ℃, the D/Y ratio is 1.3, and the stretching multiple is 1.1.
Comparative example 14
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as that of the example 1, except that a D-shaped disc is adopted as a friction plate, the temperature of the hot box is 215 ℃, the D/Y ratio is 1.4, and the stretching multiple is 1.2.
Comparative example 15
Preparation of polyamide 56 textured yarn
The preparation method of the polyamide 56 textured yarn is the same as that of the embodiment 1, except that a PU disc is adopted as a friction plate, the thickness is 9mm, the temperature of the hot box is 220 ℃, the D/Y ratio is 1.4, and the stretching multiple is 1.2.
Comparative example 16
Preparation of polyamide 6 textured yarn
The preparation method of the polyamide 6 textured yarn is the same as that of comparative example 1.
Effect example 1
The following tests were carried out on the polyamide 56 stretch yarn parameters in examples 1 to 5 and comparative examples 1 to 16 in this effect example:
(1) Breaking strength, coefficient of variation of breaking strength:
measured according to GB/T14344.
(2) Elongation at break, elongation at break coefficient of variation:
measured according to GB/T14344.
(3) Dyeing double a rate:
Dyeing double A rate= ((dyeing uniformity is not less than 4.5 grade fiber weight)/total weight of all dyed fibers) x 100%.
Dyeing uniformity (gray card)/grade: FZ/T50008 nylon filament dyeing uniformity test method.
(4) Wire breakage rate:
And (5) manually counting.
(5) Crystallinity:
Analysis of fiber sample by D/max-2550PC X-ray diffractometer manufactured by Japanese Rigaku Corporation, cu target wavelength The voltage is 20-40 kV, the current is 10-450 mA, and the measuring angle 2 theta is 5-40 degrees. The sample of polyamide 56 fiber used for testing crystallization is firstly sheared sufficiently, and the mass of the sample is more than 0.2g; the polyamide 56 fiber samples used for testing the crystallite orientation were carded in order, and a bundle length of 30mm was used for the test. And (3) carrying out data processing by adopting software such as origin and the like, and analyzing and calculating the crystallinity and orientation degree of the fiber.
The formula for calculating crystallinity:
Wherein Σi c is the total diffraction integrated intensity of the crystalline fraction; sigma I a is the scatter integrated intensity of the amorphous portion.
(6) Degree of orientation: a sound velocity orientation measuring instrument.
The results are shown in Table 1.
TABLE 1 comparison of the properties of the fibers in the examples of the invention

Claims (10)

1.一种聚酰胺56加弹丝的制备方法，包括下述步骤：1. A method for preparing a polyamide 56 stretch yarn, comprising the following steps: (1)将聚酰胺56预取向丝经导丝器，通过第1罗拉；(1) passing the polyamide 56 pre-oriented yarn through a yarn guide and passing through the first roller; (2)再依次经热拉伸、定型、假捻，通过第2罗拉；(2) Then it is subjected to heat stretching, shaping, false twisting, and passes through the second roller; (3)再经网络喷嘴处理，通过第3罗拉、卷绕，得终产品；(3) After being processed by a network nozzle, it passes through the third roller and is wound to obtain the final product; 其中，所述假捻的摩擦片为C型盘、D型盘或PU型盘，所述摩擦片的厚度为≤10mm，所述摩擦片的摩擦系数为≤1.0。Wherein, the false twist friction plate is a C-type plate, a D-type plate or a PU-type plate, the thickness of the friction plate is ≤10 mm, and the friction coefficient of the friction plate is ≤1.0. 2.根据权利要求1所述的制备方法，其中，所述摩擦片为D型盘或PU型盘；2. The preparation method according to claim 1, wherein the friction plate is a D-type plate or a PU-type plate; 和/或，所述摩擦片的厚度为6～9mm；And/or, the friction plate has a thickness of 6 to 9 mm; 和/或，所述摩擦片的摩擦系数为≤0.9；And/or, the friction coefficient of the friction plate is ≤0.9; 和/或，所述热拉伸的温度为170～200℃；And/or, the temperature of the heat stretching is 170-200°C; 和/或，所述热拉伸的倍数为1.25～1.40；And/or, the thermal stretching multiple is 1.25 to 1.40; 和/或，所述假捻的D/Y为1.6～2.2；And/or, the D/Y of the false twist is 1.6 to 2.2; 和/或，所述假捻的T2加工张力控制为T1加工张力的0.8～1.1倍；And/or, the T2 processing tension of the false twist is controlled to be 0.8 to 1.1 times of the T1 processing tension; 和/或，所述卷绕的速度为500～800m/min。And/or, the winding speed is 500-800 m/min. 3.根据权利要求1所述的制备方法，其中，所述摩擦片为PU型盘；3. The preparation method according to claim 1, wherein the friction plate is a PU type disc; 和/或，所述热拉伸的温度为175～195℃；And/or, the temperature of the heat stretching is 175-195°C; 和/或，所述热拉伸的倍数为1.27～1.38；And/or, the thermal stretching multiple is 1.27 to 1.38; 和/或，所述假捻的D/Y为1.65～2.1；And/or, the D/Y of the false twist is 1.65 to 2.1; 和/或，所述假捻的T2加工张力控制为T1加工张力的0.84～1.08倍；And/or, the T2 processing tension of the false twist is controlled to be 0.84 to 1.08 times of the T1 processing tension; 和/或，所述卷绕的速度为520～750m/min。And/or, the winding speed is 520-750 m/min. 4.根据权利要求1所述的制备方法，其中，所述摩擦片的摩擦系数为≤0.8；4. The preparation method according to claim 1, wherein the friction coefficient of the friction plate is ≤0.8; 和/或，所述热拉伸的温度为180～190℃；And/or, the temperature of the heat stretching is 180-190°C; 和/或，所述热拉伸的倍数为1.29～1.36；And/or, the thermal stretching multiple is 1.29 to 1.36; 和/或，所述假捻的D/Y为1.70～2.0；And/or, the D/Y of the false twist is 1.70 to 2.0; 和/或，所述假捻的T2加工张力控制为T1加工张力的0.88～1.06倍；And/or, the T2 processing tension of the false twist is controlled to be 0.88 to 1.06 times of the T1 processing tension; 和/或，所述卷绕的速度为540～700m/min。And/or, the winding speed is 540-700 m/min. 5.根据权利要求1所述的制备方法，其中，所述摩擦片的摩擦系数为≤0.7；5. The preparation method according to claim 1, wherein the friction coefficient of the friction plate is ≤0.7; 和/或，所述热拉伸的温度为183～188℃；And/or, the temperature of the heat stretching is 183-188°C; 和/或，所述热拉伸的倍数为1.31～1.34；And/or, the thermal stretching multiple is 1.31 to 1.34; 和/或，所述假捻的D/Y为1.75～1.9；And/or, the D/Y of the false twist is 1.75 to 1.9; 和/或，所述假捻的T2加工张力控制为T1加工张力的0.90～1.04倍；And/or, the T2 processing tension of the false twist is controlled to be 0.90 to 1.04 times of the T1 processing tension; 和/或，所述卷绕的速度为560～650m/min。And/or, the winding speed is 560-650 m/min. 6.根据权利要求1所述的制备方法，其中，所述摩擦片的摩擦系数为0.65～0.8；6. The preparation method according to claim 1, wherein the friction coefficient of the friction plate is 0.65 to 0.8; 和/或，所述热拉伸的温度为183～185℃；And/or, the temperature of the heat stretching is 183-185°C; 和/或，所述热拉伸的倍数为1.32～1.36；And/or, the thermal stretching multiple is 1.32 to 1.36; 和/或，所述假捻的T2加工张力控制为T1加工张力的0.95～1.04倍；And/or, the T2 processing tension of the false twist is controlled to be 0.95 to 1.04 times of the T1 processing tension; 和/或，所述卷绕的速度为560～600m/min。And/or, the winding speed is 560-600 m/min. 7.根据权利要求1所述的制备方法，其中，所述摩擦片为C型盘，所述摩擦片的隔间距为≥0.65mm；7. The preparation method according to claim 1, wherein the friction plate is a C-type plate, and the spacing between the friction plates is ≥ 0.65 mm; 或者，所述摩擦片为所述D型盘或所述PU型盘，所述摩擦片的隔间距为≥0.5mm。Alternatively, the friction plate is the D-type plate or the PU-type plate, and the spacing between the friction plates is ≥0.5 mm. 8.根据权利要求1所述的制备方法，其中，所述摩擦片为C型盘，所述摩擦片的隔间距为0.7～0.8mm；8. The preparation method according to claim 1, wherein the friction plate is a C-type plate, and the spacing between the friction plates is 0.7-0.8 mm; 或者，所述摩擦片为所述D型盘或所述PU型盘，所述摩擦片的隔间距为≥0.6mm。Alternatively, the friction plate is the D-type plate or the PU-type plate, and the spacing between the friction plates is ≥0.6 mm. 9.根据权利要求1所述的制备方法，其中，所述摩擦片为C型盘，所述摩擦片的隔间距为0.75mm～0.8mm；9. The preparation method according to claim 1, wherein the friction plate is a C-type plate, and the spacing between the friction plates is 0.75 mm to 0.8 mm; 或者，所述摩擦片为所述D型盘或所述PU型盘，所述摩擦片的隔间距为0.7～0.8mm。Alternatively, the friction plate is the D-type plate or the PU-type plate, and the spacing between the friction plates is 0.7-0.8 mm. 10.根据权利要求1所述的制备方法，其中，所述摩擦片为所述D型盘或所述PU型盘，所述摩擦片的隔间距为0.75mm～0.8mm；10. The preparation method according to claim 1, wherein the friction plate is the D-type plate or the PU-type plate, and the spacing between the friction plates is 0.75 mm to 0.8 mm; 和/或，所述导丝器和所述第1罗拉之间还包括切丝器；And/or, a wire cutter is further included between the wire guide and the first roller; 和/或，所述热拉伸的设备为热箱；And/or, the heat stretching device is a heat box; 和/或，所述定型为采用冷却板冷却定型；And/or, the shaping is performed by cooling with a cooling plate; 和/或，所述定型的温度为室温。And/or, the shaping temperature is room temperature. 和/或，所述卷绕前设有断丝感应器和油轮。And/or, a broken wire sensor and an oil tanker are provided before the winding.
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