LU502580B1 - Production method of high-strength and high-modulus industrial polyamide (pa) 66 filament yarn - Google Patents
Production method of high-strength and high-modulus industrial polyamide (pa) 66 filament yarn Download PDFInfo
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- LU502580B1 LU502580B1 LU502580A LU502580A LU502580B1 LU 502580 B1 LU502580 B1 LU 502580B1 LU 502580 A LU502580 A LU 502580A LU 502580 A LU502580 A LU 502580A LU 502580 B1 LU502580 B1 LU 502580B1
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/084—Heating filaments, threads or the like, leaving the spinnerettes
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/096—Humidity control, or oiling, of filaments, threads or the like, leaving the spinnerettes
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
- D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
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- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Artificial Filaments (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The present disclosure provides a production method of a high-strength and high-modulus industrial polyamide (PA) 66 filament yarn. The present disclosure improves the crystallinity and orientation of a PA 66 polymer by adjusting the draw ratio, the drawing temperature, the setting temperature, and the setting ratio, thereby improving the strength and modulus of the industrial PA 66 filament yarn. The industrial PA 66 filament yarn produced by the present disclosure has a high strength of up to 9.9-10.5 g/d. Further, the 1,400 dtex industrial PA 66 filament yarn produced by the present disclosure has a high modulus showcased by the following parameters: load at 2% elongation: 12.5-15.3 N; load at 4% elongation: 19.7-26.1 N; load at 8% elongation: 48.3-70.7 N; and load at 12% elongation: 90.2-125.9 N.
Description
DESCRIPTION LU502580
PRODUCTION METHOD OF HIGH-STRENGTH AND HIGH-MODULUS
INDUSTRIAL POLYAMIDE (PA) 66 FILAMENT YARN
The present disclosure relates to the technical field of industrial filament yarn production and, in particular, to a production method of a high-strength and high-modulus industrial polyamide (PA) 66 filament yarn.
At present, there are two production methods of industrial polyamide (PA) 66 filament yarns, namely direct spinning and chip spinning. In both methods, the melt is passed through a spinning assembly to form the industrial PA 66 filament yarn with a spinning viscosity (relative viscosity of formic acid) of 69-80, and the as-spun fiber is drawn by a drawing device after being extruded from a spinneret of the spinning assembly.
The as-spun fiber is passed through a feeding roller, a first pair of drawing rollers, a second pair of drawing rollers, a third pair of drawing rollers, and a fourth pair of drawing rollers. It is finally conveyed through a yarn guide to a winding device to be wound on a bobbin. The industrial PA 66 filament yarn is drawn twice before being wound on the bobbin. The first drawing is performed between the first drawing rollers and the second drawing rollers, and the second drawing is performed between the second drawing rollers and the third drawing rollers.
This process involves a first draw ratio of 2.5-3.3, a total draw ratio of 4.5-6.0, and a winding speed of 2,300-3,800 m/min.
The 1,400 dtex industrial PA 66 filament yarn produced by the existing process has the following physical properties: load at 2% elongation: 9.7-10.3 N (i.e. modulus 3.898-4.14 GPa); load at 4% elongation: 15.4-16.5 N; load at 8% elongation: 35.3-37.5 N; load at 12% elongation: 71.3-76.8 N; strength: about 9.6 g/d; elongation at break: 16-22%; elongation at constant load: 10.5-13.5%; and dry heat shrinkage: 4.5-7.7%. The modulus of the industrial PA 66 filament yarn directly affects the modulus of the dipped PA 66 cord for tire production, thereby affecting the deformation of the tire during use. Therefore, to further improve the quality of tires, th4502580 research and development of high-strength and high-modulus industrial PA 66 filament yarns has become a constant pursuit in the field.
To solve the technical problem of low modulus of the industrial polyamide (PA) 66 filament yarn produced by the existing process, the present disclosure provides a production method of a high-strength and high-modulus industrial PA 66 filament yarn. The present disclosure improves the crystallinity and orientation of a PA 66 polymer by adjusting a drawing temperature, a setting temperature, and a setting ratio, thereby improving the strength and modulus of the industrial PA 66 filament yarn.
The present disclosure adopts the following technical solution.
A production method of a high-strength and high-modulus industrial PA 66 filament yarn includes the following steps: (1) extruding, by a spinneret, a molten PA 66 polymer to form a PA 66 as-spun fiber; (2) cooling, by cooling air, the PA 66 as-spun fiber formed in step (1); (3) passing, by a spinning channel, the PA 66 as-spun fiber cooled in step (2), and finishing; (4) clustering the PA 66 as-spun fiber finished in step (3) and pre-mingling the PA 66 as-spun fiber; (5) feeding the PA 66 as-spun fiber treated in step (4) into a multi-stage drawing device and winding the PA 66 as-spun fiber on hot rollers of the multi-stage drawing device in sequence, where the multi-stage drawing device includes at least 4 pairs of hot rollers.
The hot rollers include at least three pairs of drawing rollers arranged in sequence and at least one pair of setting rollers arranged following a process undertaken by the drawing rollers. A last pair of drawing rollers heats at 205-245°C. (6) mingling, by a mingling device, the industrial PA 66 filament yarn drawn by the multi-stage drawing device and winding, by a winding device, the industrial PA 66 filament yarn on a bobbin.
Further, the spinneret may be provided with holes with a diameter of 0.23-0.45 mm and may have an aspect ratio of 1:1 to 3:1.
Further, the multi-stage drawing device may include 4 pairs of hot rollers, namely three pair§/202580 of hot rollers that may be drawing rollers and one pair of hot rollers that may be setting rollers.
The three pairs of hot rollers may include a first pair of hot rollers heating at 50-65°C, a second pair of hot rollers heating at 190-210°C, and a third pair of hot rollers heating at 205-245°C. The one pair of hot rollers may include a fourth pair of hot rollers heating at 130-190°C. The setting ratio may be 0.972-0.982.
Further, the multi-stage drawing device may include 5 pairs of hot rollers, namely three pairs of hot rollers that may be drawing rollers and two pairs of hot rollers that may be setting rollers.
The three pairs of hot rollers may include a first pair of hot rollers heating at 50-65°C, a second pair of hot rollers heating at 190-210°C, and a third pair of hot rollers heating at 205-245°C. The two pairs of hot rollers may include a fourth pair of hot rollers heating at 160-200°C and a fifth pair of hot rollers heating at 120-160°C. The setting ratio may be 1.002.
Further, the multi-stage drawing device may include 6 pairs of hot rollers, namely four pairs of hot rollers that may be drawing rollers and two pairs of hot rollers that may be setting rollers.
The four pairs of hot rollers may include a first pair of hot rollers heating at 40-50°C, a second pair of hot rollers heating at 50-65°C, a third pair of hot rollers heating at 200-220°C, and a fourth pair of hot rollers heating at 220-245°C. The two pairs of hot rollers may include a fifth pair of hot rollers heating at 180-200°C and a sixth pair of hot rollers heating at 130-160°C. The setting ratio may be 0.953.
Compared with the prior art, the present disclosure has the following technical effects: 1. The industrial PA 66 filament yarn produced by the present disclosure has high strength and high modulus. The present disclosure appropriately increases the drawing temperature, reduces the setting temperature, and increases the setting ratio, thereby achieving the purpose of producing the high-strength and high-modulus industrial PA 66 filament yarn. 2. The industrial PA 66 filament yarn produced by the present disclosure has a high strength up to 9.9-10.5 g/d, which reduces the usage amount of the dipped cord in the tire and reduces the weight of the tire. 3. The 1,400 dtex industrial PA 66 filament yarn produced by the present disclosure has a high modulus showcased by the following parameters: load at 2% elongation: 12.5-15.3 N; load at 4% elongation: 19.7-26.1 N; load at 8% elongation: 48.3-70.7 N; and load at 12% elongation:
90.2-125.9 N. Therefore, the industrial PA 66 filament yarn produced by the present disclosure {49502580 not easily deformed, thus improving the fatigue resistance of the tire and prolonging the service life of the tire.
The present disclosure is described in further detail below with reference to specific implementations.
In order to express the modulus of the industrial polyamide (PA) 66 filament yarn simply and conveniently, the present disclosure uses loads applied to cause elongations of 2%, 4%, 8%, and 12% to express the modulus of the industrial PA 66 filament yarn.
The present disclosure provides a production method of a high-strength and high-modulus industrial PA 66 filament yarn, including the following steps: (1) Extrude, by a spinneret, a molten PA 66 polymer to form a PA 66 as-spun fiber, where the spinneret 1s provided with holes with a diameter of 0.23-0.45 mm and has an aspect ratio of 1:1 to 3:1. (2) Cool, by cooling air, the PA 66 as-spun fiber formed in step (1). (3) Pass, by a spinning channel, the PA 66 as-spun fiber cooled in step (2), and finish. (4) Cluster the PA 66 as-spun fiber finished in step (3) and pre-mingle the PA 66 as-spun fiber. (5) Feed the PA 66 as-spun fiber treated in step (4) into a multi-stage drawing device and wind the PA 66 as-spun fiber on all hot rollers of the multi-stage drawing device in sequence, where the multi-stage drawing device includes at least 4 pairs of hot rollers.
The hot rollers include at least three pairs of drawing rollers arranged in sequence and at least one pair of setting rollers arranged following a process undertaken by the drawing rollers.
The last pair of drawing rollers heats at 205-245°C. The setting rollers gradually relax the drawn industrial PA 66 filament yarn.
When the multi-stage drawing device includes 4 pairs of hot rollers, the PA 66 as-spun fiber treated in step (4) is wound around a feeding roller, and then fed into the multi-stage drawing device. The feeding roller 1s not provided with a heating device. Among the 4 pairs of hot rollers, there are three pairs of hot rollers that are drawing rollers and one pair of hot rollers that are setting rollers. The three pairs of hot rollers include a first pair of hot rollers heating at 50-65°EUS02580 a second pair of hot rollers heating at 190-210°C, and a third pair of hot rollers heating at 205-245°C. The one pair of hot rollers includes a fourth pair of hot rollers heating at 130-190°C.
The setting ratio is 0.972-0.982.
When the multi-stage drawing device includes 5 pairs of hot rollers, the PA 66 as-spun fiber treated in step (4) is wound around a feeding roller, and then fed into the multi-stage drawing device. The feeding roller is not provided with a heating device. Among the 5 pairs of hot rollers, there are three pairs of hot rollers that are drawing rollers and two pairs of hot rollers that are setting rollers. The three pairs of hot rollers include a first pair of hot rollers heating at 50-65°C, a second pair of hot rollers heating at 190-210°C, and a third pair of hot rollers heating at 205-245°C. The two pairs of hot rollers include a fourth pair of hot rollers heating at 160-200°C and a fifth pair of hot rollers heating at 120-160°C. The setting ratio is 1.002.
Among the 6 pairs of hot rollers, there are four pairs of hot rollers that are drawing rollers and two pairs of hot rollers that are setting rollers. The four pairs of hot rollers include a first pair of hot rollers heating at 40-50°C, a second pair of hot rollers heating at 50-65°C, a third pair of hot rollers heating at 200-220°C, and a fourth pair of hot rollers heating at 220-245°C. The two pairs of hot rollers include a fifth pair of hot rollers heating at 180-200°C and a sixth pair of hot rollers heating at 130-160°C. The setting ratio is 0.953.
The present disclosure appropriately increases the temperature (the temperature of the drawing rollers, especially the temperature of the last pair of drawing rollers), reduces the setting temperature (the temperature of the setting rollers, especially the temperature of the last pair of setting rollers), and increases the setting ratio and the total draw ratio, thereby achieving the purpose of producing the high-strength and high-modulus industrial PA 66 filament yarn. (6) Mingle, by a mingling device, the industrial PA 66 filament yarn drawn by the multi-stage drawing device and wind, by a winding device, the industrial PA 66 filament yarn at 2,300-2,885 m/min on a bobbin.
The setting ratio refers to a speed ratio of the last pair of setting rollers and the last pair of drawing rollers.
The total draw ratio refers to a speed ratio of the last pair of drawing rollers to the first pair of drawing rollers. LUS02580
The present disclosure achieves a high degree of consistency in the microscopic molecular arrangement of the polymer by adjusting the setting ratio and the total draw ratio, thereby achieving the purpose of improving the orientation and crystallinity of the polymer. The present disclosure increases the drawing temperature to give the polymer sufficient energy for relative sliding of the molecular chains to occur. The present disclosure reduces the setting temperature such that the drawn tow cools rapidly to fix the existing polymer orientation and crystallinity, preventing it from shrinking rapidly to reduce the orientation and crystallinity.
The application embodiments of the present disclosure using the production method are described as follows.
In Embodiments 1 to 4, the produced industrial PA 66 filament yarn has a linear density of 1,400 dtex. The production process uses a multi-stage drawing device, which includes 4 pairs of hot rollers. Among the 4 pairs of hot rollers, there are three pairs of hot rollers that are drawing rollers and one pair of hot rollers that are setting rollers. The three pairs of hot rollers include a first pair of hot rollers (1G) heating at 50-65°C, a second pair of hot rollers (2G) heating at 190-210°C, and a third pair of hot rollers (3G) heating at 205-245°C. The one pair of hot rollers includes a fourth pair of hot rollers (4G), which heats at 130-190°C. The parameter settings of each embodiment are shown in Table 1.
In Embodiments 5 and 6, the produced industrial PA 66 filament yarn has a linear density of 940 dtex. The production process uses a multi-stage drawing device, which includes 4 pairs of hot rollers. The parameter settings of each embodiment are shown in Table 1.
In Comparative Embodiment, the produced industrial PA 66 filament yarn has a linear density of 1,400 dtex. The production process uses a multi-stage drawing device, which includes 4 pairs of hot rollers. The parameter settings of each embodiment are shown in Table 1.
Table 1
Comparat ive Embodim | Embodim | Embodim | Embodim | Embodim | Embodim
Item Unit
Embodim | ent 1 ent 2 ent 3 ent 4 ent 5 ent 6 ent
Speed of LU502580 feeding m/m roller (cold 470 483 480 562 475 475 475 in roller does not heat)
Temperatu °C 55 50 65 55 55 55 re of 1G
Temperatu °C 204 190 210 200 204 204 204 re of 2G
Temperatu °C 210 235 245 235 235 235 235 re of 3G
Temperatu °C 197 190 130 130 130 140 140 re of 4G
Spinning speed m/m 2300 2400 2496 2885 2885 2489 2489 (winding | in speed)
Total draw / 5.25 5.300 5.329 5.326 5.326 5.329 5.329 ratio
Setting / 0.912 0.972 0.982 0.982 0.982 0.982 0.982 ratio
Residence time of ms 166 267 160 138 138 160 160 tow at 2G
Residence time of ms 115 111 111 95 95 111 111 tow at 3G
Residence time of ms 126 228 113 97 97 245 245 tow at 4G om mie [ue Jr Jn [ue Jw [TT dtex | 1400 1400 1400 1400 1400 940 940 density oe or [ot Jor Jor Jw [or fe % 19.7 19.8 19.7 16.7 16.7 17.8 17.5 at break
Load at 2% N 9.7 12.5 13.5 13.8 13.8 8.8 elongation
Load at 4% N 15.4 19.7 22.2 22.5 22.5 14.6 15.0 elongation
Load at 8% N 353 48.3 58.9 60.3 60.3 39.6 40.5 elongation
Load at 12% N 71.3 90.2 112.9 114.2 114.2 75.7 76.0 elongation mers [va [96 Jor [wa Joo [wo wi Joo
It can be seen from Table 1 that the strength and modulus in Embodiments 1 to 6 are higher than those in Comparative Embodiment. The temperature changes of 1G and 2G have little or no effect on the modulus. The temperature changes of 3G and 4G have a great effect on the modulus.
Embodiment 4 is a preferred embodiment.
In Embodiments 7 and 10, the produced industrial PA 66 filament yarn has a linear density of 1400 dtex. The production process uses a multi-stage drawing device, which includes 5 pairs of hot rollers. The multi-stage drawing device includes 5 pairs of hot rollers, namely three pairs of hot rollers that are drawing rollers and two pairs of hot rollers that are setting rollers. The three pairs of hot rollers include a first pair of hot rollers (1G) heating at 50-65°C, a second pair of hot rollers (2G) heating at 190-210°C, and a third pair of hot rollers (3G) heating at 205-245°C. The two pairs of hot rollers include a fourth pair of hot rollers (4G) heating at 160-200°C and a fifth pair of hot rollers (5G) heating at 120-160°C. The parameter settings of each embodiment are shown in Table 2.
Table 2 LU502580
Item Unit Embodiment 10 7 8 9
Speed of feeding roller m/min 472 472 472 472 (cold roller does not heat)
Temperature of °C 55 55 55 55 1G
Temperature of °C 210 200 200 210 2G
Temperature of °C 245 220 202 245 3G
Temperature of °C 190 190 190 190 4G
Temperature of °C 120 160 160 140 5G
Spinning speed (winding m/min 2500 2500 2500 2500 speed)
Residence time ms 160 160 160 160 of tow at 2G
Residence time ms 111 111 111 111 of tow at 3G
Residence time ms 115 115 115 115 of tow at 4G
Residence time ms 116 116 116 116 of tow at 5G
Elongation at % 16.8 17.2 17.8 16.5 break
Load at 2%
N 14.0 12.5 12.3 13.6 elongation
Load at 4%
N 23.4 20.6 20.2 21.8 elongation
Load at 8%
N 62.5 58.6 50.3 59.6 elongation
Load at 12%
N 116.4 112.8 96.2 115.0 elongation
It can be seen from Table 2 that the setting temperature of 5G and the drawing temperature of 3G have a great effect on the modulus, and Embodiment 7 is one of the preferred embodiments.
In Embodiments 11 and 13, the produced industrial PA 66 filament yarn has a linear density of 467 dtex. The production process uses a multi-stage drawing device, which includes 6 pairs of hot rollers. Among the 6 pairs of hot rollers, there are four pairs of hot rollers that are drawing rollers and two pairs of hot rollers that are setting rollers. The four pairs of hot rollers include a first pair of hot rollers (1G) heating at 40-50°C, a second pair of hot rollers (2G) heating at 50-65°C, a third pair of hot rollers (3G) heating at 200-220°C, and a fourth pair of hot rollers (4G) heating at 220-245°C. The two pairs of hot rollers include a fifth pair of hot rollers (SG) heating at 180-200°C and a sixth pair of hot rollers (6G) heating at 130-160°C. The parameter settings of each embodiment are shown in Table 3.
Table 3
Item Unit 11 12 13
Spinning speed (winding m/min 2500 2500 2500 speed)
Residence time of tow at ms 483 483 483 2G
Residence time of tow at ms 138 138 138 3G
Residence time of tow at ms 95 95 95 4G
Residence time of tow at ms 5G
Residence time of tow at ms 92 92 92 6G
As shown in Table 3, 6 pairs of hot rollers are used in Embodiments 11 to 13. This offers evidence of adjustment in the process of Embodiments 1 to 10 and also shows that more drawing rollers are more favorable to develop a high-strength and high-modulus product. Embodiment 11 is one of the preferred embodiments.
Regarding the conversion method of the load applied to cause the elongation, for example, the 9.3 N load of the 940 dtex filament yarn at the 2% elongation is converted into a load of 9.3 *
1,400/940 = 13.85 N for the 1,400 dtex filament yarn, and the 5.1 N load of the 467 dtét/502580 filament yarn at the 2% elongation is converted into a load of 5.1 * 1,400/467 =15.3 N for the 1,400 dtex filament yarn.
The above described are only preferred embodiments of the present disclosure and are only intended to explain the present disclosure, rather than to limit the implementation scope of the present disclosure. Of course, those skilled in the art can easily make other embodiments by substitution or modification according to the technical content disclosed in this specification.
Therefore, all changes and improvements derived from the principles and process conditions of the present disclosure should be included in the patent scope of the present disclosure.
Claims (5)
1. A production method of a high-strength and high-modulus industrial polyamide (PA) 66 filament yarn, comprising the following steps: (1) extruding, by a spinneret, a molten PA 66 polymer to form a PA 66 as-spun fiber; (2) cooling, by cooling air, the PA 66 as-spun fiber formed in step (1); (3) passing, by a spinning channel, the PA 66 as-spun fiber cooled in step (2), and finishing; (4) clustering the PA 66 as-spun fiber finished in step (3) and pre-mingling the PA 66 as-spun fiber; (5) feeding the PA 66 as-spun fiber treated in step (4) into a multi-stage drawing device, and winding the PA 66 as-spun fiber on hot rollers of the multi-stage drawing device in sequence, wherein the multi-stage drawing device comprises at least 4 pairs of hot rollers; and the hot rollers comprise at least three pairs of drawing rollers arranged in sequence and at least one pair of setting rollers arranged following a process undertaken by the drawing rollers; and a last pair of drawing rollers heats at 205-245°C; and (6) mingling, by a mingling device, the industrial PA 66 filament yarn drawn by the multi-stage drawing device and winding, by a winding device, the industrial PA 66 filament yarn on a bobbin.
2. The production method of a high-strength and high-modulus industrial PA 66 filament yarn according to claim 1, wherein the spinneret is provided with holes with a diameter of
0.23-0.45 mm, and has an aspect ratio of 1:1 to 3:1.
3. The production method of a high-strength and high-modulus industrial PA 66 filament yarn according to claim 1, wherein the multi-stage drawing device comprises 4 pairs of hot rollers, namely three pairs of hot rollers that are drawing rollers and one pair of hot rollers that are setting rollers; the three pairs of hot rollers comprise a first pair of hot rollers heating at 50-65°C, a second pair of hot rollers heating at 190-210°C, and a third pair of hot rollers heating at 205-245°C; and the one pair of hot rollers comprises a fourth pair of hot rollers heating at 130-190°C; and a setting ratio is 0.972-0.982.
4. The production method of a high-strength and high-modulus industrial PA 66 filament yarn according to claim 1, wherein the multi-stage drawing device comprises 5 pairs of hot rollers, namely three pairs of hot rollers that are drawing rollers and two pairs of hot rollers that are setting rollers; the three pairs of hot rollers comprise a first pair of hot rollers heating Lp502580 50-65°C, a second pair of hot rollers heating at 190-210°C, and a third pair of hot rollers heating at 205-245°C; the two pairs of hot rollers comprise a fourth pair of hot rollers heating at 160-200°C and a fifth pair of hot rollers heating at 120-160°C; and a setting ratio is 1.002.
5. The production method of a high-strength and high-modulus industrial PA 66 filament yarn according to claim 1, wherein the multi-stage drawing device comprises 6 pairs of hot rollers, namely four pairs of hot rollers that are drawing rollers and two pairs of hot rollers that are setting rollers; the four pairs of hot rollers comprise a first pair of hot rollers heating at 40-50°C, a second pair of hot rollers heating at 50-65°C, a third pair of hot rollers heating at 200-220°C, and a fourth pair of hot rollers heating at 220-245°C; the two pairs of hot rollers comprise a fifth pair of hot rollers heating at 180-200°C and a sixth pair of hot rollers heating at 130-160°C; and a setting ratio is 0.953.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111376386.2A CN113957551B (en) | 2021-11-19 | 2021-11-19 | Production method of industrial filament of high-strength high-modulus chinlon 66 |
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| Publication Number | Publication Date |
|---|---|
| LU502580B1 true LU502580B1 (en) | 2023-01-30 |
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| CN (1) | CN113957551B (en) |
| LU (1) | LU502580B1 (en) |
| WO (1) | WO2023087650A1 (en) |
| ZA (1) | ZA202208252B (en) |
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| CN113957551B (en) * | 2021-11-19 | 2022-12-02 | 平顶山神马帘子布发展有限公司 | Production method of industrial filament of high-strength high-modulus chinlon 66 |
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| US4251481A (en) * | 1979-05-24 | 1981-02-17 | Allied Chemical Corporation | Continuous spin-draw polyester process |
| JP2954391B2 (en) * | 1991-05-22 | 1999-09-27 | 帝人株式会社 | Polyethylene naphthalate fiber and method for producing the same |
| JP2001089933A (en) * | 1999-09-16 | 2001-04-03 | Toray Ind Inc | One-step production of polyester staple fiber |
| TWI321601B (en) * | 2007-08-20 | 2010-03-11 | San Fang Chemical Industry Co | Manufacturing method for environment friendly ultra-fine filament products having low resistance to deformation and high physical property |
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| CN101619503B (en) * | 2009-07-27 | 2011-04-27 | 神马实业股份有限公司 | High-strength ultra-low thermal contraction nylon 66 fiber and production method thereof |
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| CN107164811A (en) * | 2017-04-21 | 2017-09-15 | 常熟涤纶有限公司 | A kind of processing technology of the fine denier filament of high-strength low-shrinkage nylon 66 |
| CN108048921B (en) * | 2017-11-30 | 2019-07-30 | 神马实业股份有限公司 | A kind of production method of 66 industrial yarn of superelevation breaking strength polyamide fibre |
| CN108441974B (en) * | 2018-03-22 | 2019-08-13 | 神马实业股份有限公司 | A kind of production method of superhigh intensity 66 nylon fiber |
| CN109023566A (en) * | 2018-07-30 | 2018-12-18 | 江苏百利达股份有限公司 | A kind of preparation method of high intensity 66 long filament of high-shrinkage polyamide |
| CN110055602B (en) * | 2019-05-22 | 2021-05-04 | 江苏太极实业新材料有限公司 | Polyamide 56 high-tenacity industrial yarn and preparation method thereof |
| CN110067033A (en) * | 2019-05-27 | 2019-07-30 | 北京中丽制机工程技术有限公司 | A kind of 66 high-intensity fiber of production method and polyamide fibre of 66 high-intensity fiber of polyamide fibre |
| CN112921419A (en) * | 2021-01-19 | 2021-06-08 | 长乐力恒锦纶科技有限公司 | Production method and equipment of ultra-high strength chinlon 6 semi-dull filament |
| CN113957551B (en) * | 2021-11-19 | 2022-12-02 | 平顶山神马帘子布发展有限公司 | Production method of industrial filament of high-strength high-modulus chinlon 66 |
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2021
- 2021-11-19 CN CN202111376386.2A patent/CN113957551B/en active Active
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2022
- 2022-05-24 WO PCT/CN2022/094663 patent/WO2023087650A1/en unknown
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| CN113957551A (en) | 2022-01-21 |
| ZA202208252B (en) | 2022-10-26 |
| CN113957551B (en) | 2022-12-02 |
| WO2023087650A1 (en) | 2023-05-25 |
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