CN108441974B - A kind of production method of superhigh intensity 66 nylon fiber - Google Patents
A kind of production method of superhigh intensity 66 nylon fiber Download PDFInfo
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- CN108441974B CN108441974B CN201810240403.1A CN201810240403A CN108441974B CN 108441974 B CN108441974 B CN 108441974B CN 201810240403 A CN201810240403 A CN 201810240403A CN 108441974 B CN108441974 B CN 108441974B
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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
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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
- D01D1/00—Treatment of filament-forming or like material
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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
- D01D5/088—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
- 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
- D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
- D01F6/80—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyamides
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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
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
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- General Chemical & Material Sciences (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a kind of production method of superhigh intensity 66 nylon fiber, the key steps of the production method are as follows: nylon 66 salt solution-concentration polymerization-spinning-cooling-oils-drafting forming-winding.Production method simple process of the present invention, it is easy to operate, superhigh intensity 66 nylon fiber mass continuous production may be implemented, high production efficiency, yield is big, product batches part performance is uniform and stable, the breaking strength of the superhigh intensity 66 nylon fiber of preparation has reached 10.0-10.4g/d, elongation at break has reached 16-22%, continuous rating elongation rate has reached 10.5-13.5%, dry-hot shrinkage is 4.7-7.7%, strength retention > 90%, has many advantages, such as that intensity is high, substance is light, endurance, impact resistance, abrasion-resistant and heat-resist.
Description
Technical field
The invention belongs to spining technology fields, and in particular to a kind of production method of superhigh intensity 66 nylon fiber.
Background technique
The scientific name of polyamide fibre is Fypro, is the general designation of the produced polyamide fiber of China, claims nylon in the world, is had strong
The good feature of height, wearability, resilience is spent, it is 10 times of dry state viscose rayon that wearability, which is 10 times of cotton fiber, is hygrometric state fibre
140 times of dimension.Polyamide fibre principal item has polyamide fibre 6 and polyamide fibre 66, and physical property is not much different, and has good moth-resistant, corrosion-resistant
Performance, can it is pure spinning and it is blended make various dress materials and knitwear, the hygroscopicity of nylon fabric belongs to preferable in synthetic fabrics
Kind, the clothes made of polyamide fibre are more comfortable and easy to wear than terylene clothes.Low denier industrial yarn is in polyamide fibre 66 with its intensity height, weight
Gently, the advantages that endurance, impact resistance, rub resistance, softness easy to process, therefore, tyre framework material, conveying are also widely used for
The band fields such as canvas, hawser, hanging belt.When using products such as 66 fiber of high-strength polyamide production tire, conveyer belt, hanging belts,
It can achieve and subtract layer, loss of weight and the purpose for reducing production cost, while high-quality tyre, conveyer belt and hanging belt can also be met
Performance requirement, but the breaking strength of 66 industrial yarn of polyamide fibre of prior art production industry is used to be generally 9.3-9.5g/d, therefore,
Urgent need finds a kind of method for producing superhigh intensity 66 nylon fiber.
Summary of the invention
The object of the present invention is to provide a kind of production methods of superhigh intensity 66 nylon fiber, and the production method is using continuous
Polymerization, melt direct spinning technological principle, the breaking strength for the superhigh intensity 66 nylon fiber being prepared are 10.0-10.4g/
D, elongation at break 16-22%, continuous rating elongation rate 10.5-13.5%, dry-hot shrinkage 4.7-7.7%, strength are kept
Rate is > 90%.
To realize goal of the invention, the technical solution adopted by the present invention are as follows:
The present invention provides a kind of production method of superhigh intensity 66 nylon fiber, the production method includes following step
It is rapid:
(1) it polymerize: the nylon 66 salt solution that mass percentage concentration is 48-55% is concentrated, is polymerize, molten is obtained
The formic acid relative viscosity of the glutinous polymerization spinning melt of the height of state, the high glutinous polymerization spinning melt is 76-85；
(2) spinning: the glutinous polymerization spinning melt of height is delivered in manifold by melt pipe, and spinning is quantitatively pressed into through metering pump
Silk component, is then ejected in manifold by spinneret and forms tow, wherein the temperature of the manifold is 305-325 DEG C, institute
Stating residence time of the high glutinous polymerization spinning melt in filament spinning component is 1.5-2.5min；
(3) cooling: side-blown air cooling to be carried out to the tow that step (2) obtains, temperature≤16 DEG C of the cross air blasting are side-blown
The humidity of wind is 70-80%, and wind speed 0.8-1.5m/s, wind speed is gradually reduced from top to bottom；
(4) it oils: the tow being cooled and shaped after step (3) processing being oiled, the finish after oiling on tow is attached
Amount be tow weight 1.0%~1.8%；
(5) drawing-off, sizing: using three pairs of hot-rollings, to step (4), treated that tow carries out drafting forming processing, wherein
Between first pair of hot-rolling and second pair of hot-rolling carry out level-one drawing-off (high drafting), third between hot-rolling and second pair of hot-rolling into
Row second level drawing-off (low power drawing-off), and in third to the nervous sizing of completion on hot-rolling；The temperature of first pair of hot-rolling is 50-80 DEG C,
The temperature of second pair of hot-rolling is 170-210 DEG C, and third is 200-220 DEG C to the temperature of hot-rolling, and level-one draft ratio is 2.8-
4.0, second level draft ratio is 1.0-2.0；
(6) wind: will by step (5) treated that tow is wound after network is twisted, it is bright and beautiful to obtain superhigh intensity
66 fiber of synthetic fibre.
According to above-mentioned production method, it is preferable that the temperature of melt pipe described in step (2) is 285-295 DEG C.
According to above-mentioned production method, it is preferable that metering pump described in step (2) is that one-in-and-one-out formula or one into four go out
Formula.
According to above-mentioned production method, it is preferable that the hole count of spinneret described in step (2) is the hole 104-230/plate, hole
Spacing is 7.5-9.0mm, and aperture 0.2-0.3mm, draw ratio is that (draw ratio is depth and the aperture of spinneret hole to 1.5-2.0
Between ratio；Draw ratio is big, is conducive to high drafting).
According to above-mentioned production method, it is preferable that use subregion multistage heating in hot-rolling described in step (5).
According to above-mentioned production method, it is preferable that tow is to the residence time on hot-rolling in third in step (5)
0.05-0.09 seconds.
According to above-mentioned production method, it is preferable that the speed of winding described in step (6) is 1800-3000m/min, volume
Around relaxation than being 0.8-0.92 (winding relaxation ratio is the ratio of winding head linear velocity and third to hot-rolling linear velocity).
The present invention also provides a kind of superhigh intensity 66 nylon fiber prepared using aforementioned production method, the superelevation is strong
The breaking strength for spending 66 nylon fiber is 10.0-10.4g/d, elongation at break 16-22%, continuous rating elongation rate 10.5-
13.5%, dry-hot shrinkage 4.7-7.7%, strength retention > 90%.
Compared with prior art, the positive beneficial effect that the present invention obtains are as follows:
(1) present invention uses continuous polymerization, melt direct spinning technological principle, consistent, strict control spinning melt
With the temperature of manifold, keeps the viscosity of high glutinous polymer spinning melt uniform and stable, improve the spinnability of silk, be that the superelevation of silk is strong
Degree and uniform quality are got ready；Since the spinning polymer viscosity of continuous polymerization is up to 76-85, to prevent high bonding polymerization
Object deteriorates in filament spinning component, and residence time control of the high polymer spinning melt in filament spinning component is by the present invention by research
2~2.5 minutes, deterioration of the high polymer in filament spinning component is reduced, the quality of polymer is improved.
(2) present invention is in cooling procedure the cooling effect for guaranteeing cross air blasting, accelerates wind speed, especially top wind speed most
Greatly, it is quenched tow, reduces as-spun fibre crystallization and orientation, be conducive to obtain higher breaking strength；Pass through control oil after oiling
Agent adhesive rate (1.0%~1.8%), can eliminate electrostatic, be convenient for high temperature, high drafting；Subregion multistage heating is used in hot-rolling,
Equal control and abundant thermal finalization conducive to temperature, keep the uniformity of silk good, guarantee the quality of silk；Control the drawing-off temperature of hot-rolling
There is broken end and lousiness phenomenon, while also avoiding crystallization rate is too fast when the temperature is excessively high from leading to drawing-off in degree when preventing temperature too low
It cannot proceed normally；Suitable draft ratio is controlled, the link for avoiding excessive draft ratio from destroying molecule generates lousiness and silk
Wrapping roller；In short, the present invention is by control drawing temperature, draft ratio, winding speed and winds relaxation ratio, mention to the maximum extent
The breaking strength and elongation at break of high product obtain the 66 nylon fiber of high-performance, high quality, superhigh intensity.
(3) breaking strength of the superhigh intensity 66 nylon fiber of production method production of the present invention is 10.0-10.4g/d, is broken
Splitting elongation is 16-22%, continuous rating elongation rate 10.5-13.5%, dry-hot shrinkage 4.7-7.7%, strength retention
> 90% has many advantages, such as that intensity is high, substance is light, endurance, impact resistance, abrasion-resistant and heat-resist, can be used for producing Gao Pin
The products such as matter tire, conveyer belt, hawser, hanging belt, while also achieving the purpose that subtract layer, loss of weight and reducing its production cost.
(4) production method simple process of the present invention, it is easy to operate, it is continuous that superhigh intensity 66 nylon fiber mass may be implemented
Production, high production efficiency, yield is big, and product batches part performance is uniform and stable, has filled up the sky of domestic 66 ultra-high strong fiber of polyamide fibre
It is white, and product quality has also reached international most advanced level, has significant economic benefit and social benefit.
Specific embodiment
The present invention is described in further details below by way of specific embodiment, but is not limit the scope of the invention.
Embodiment 1:
A kind of production method of superhigh intensity 66 nylon fiber, comprising the following steps:
(1) it polymerize: the nylon 66 salt solution that mass percentage concentration is 52% is concentrated, is polymerize, molten condition is obtained
The glutinous polymerization spinning melt of height, the formic acid relative viscosity of the high glutinous polymerization spinning melt is 80；
(2) spinning: the glutinous polymerization spinning melt of height is delivered in manifold by melt pipe, and spinning is quantitatively pressed into through metering pump
Silk component, is then ejected in manifold by spinneret and forms tow；Wherein, the temperature of the melt pipe is 290 DEG C；It is described
The temperature of manifold is 315 DEG C；Residence time of the high glutinous polymerization spinning melt in filament spinning component is 2min；The metering
Pump is one-in-and-one-out formula；The hole count of the spinneret is 160 holes/plate, and pitch of holes 8.2mm, aperture 0.26mm, draw ratio is
1.8；
(3) cooling: side-blown air cooling to be carried out to the tow that step (2) obtains, the temperature of the cross air blasting is 15 DEG C, side-blown
The humidity of wind is 75%, and wind speed 0.8-1.5m/s, wind speed is gradually reduced from top to bottom；
(4) it oils: the tow being cooled and shaped after step (3) processing being oiled, the finish after oiling on tow is attached
Amount be tow weight 1.4%；
(5) drawing-off, sizing: using three pairs of hot-rollings, to step (4), treated that tow carries out drafting forming processing, wherein
Between first pair of hot-rolling and second pair of hot-rolling carry out level-one drawing-off (high drafting), third between hot-rolling and second pair of hot-rolling into
Row second level drawing-off (low power drawing-off), and in third to the nervous sizing of completion on hot-rolling；The temperature of first pair of hot-rolling be 65 DEG C, second
Temperature to hot-rolling is 190 DEG C, and third is 210 DEG C to the temperature of hot-rolling, and level-one draft ratio is 3.8, and second level draft ratio is
1.6；Wherein, in step (5) tow third to the residence time on hot-rolling be 0.09 second；
(6) wind: will by step (5) treated that tow is wound after network is twisted, it is bright and beautiful to obtain superhigh intensity
66 fiber of synthetic fibre；Wherein, the speed of the winding is 3000m/min, winds relaxation than being 0.88.
The performance test results of the superhigh intensity 66 nylon fiber prepared using the production method described in this implementation are referring to table
1。
Embodiment 2:
A kind of production method of superhigh intensity 66 nylon fiber, comprising the following steps:
(1) it polymerize: the nylon 66 salt solution that mass percentage concentration is 48% is concentrated, is polymerize, molten condition is obtained
The glutinous polymerization spinning melt of height, the formic acid relative viscosity of the high glutinous polymerization spinning melt is 76；
(2) spinning: the glutinous polymerization spinning melt of height is delivered in manifold by melt pipe, and spinning is quantitatively pressed into through metering pump
Silk component, is then ejected in manifold by spinneret and forms tow；Wherein, the temperature of the melt pipe is 295 DEG C；It is described
The temperature of manifold is 325 DEG C；Residence time of the high glutinous polymerization spinning melt in filament spinning component is 1.5min；The meter
Amount pump goes out formula for one into four；The hole count of the spinneret is 104 holes/plate, pitch of holes 9.0mm, aperture 0.3mm, draw ratio
It is 1.5；
(3) cooling: side-blown air cooling to be carried out to the tow that step (2) obtains, temperature≤18 DEG C of the cross air blasting are side-blown
The humidity of wind is 70%, and wind speed 0.8-1.5m/s, wind speed is gradually reduced from top to bottom；
(4) it oils: the tow being cooled and shaped after step (3) processing being oiled, the finish after oiling on tow is attached
Amount be tow weight 1.0%；
(5) drawing-off, sizing: using three pairs of hot-rollings, to step (4), treated that tow carries out drafting forming processing, wherein
Between first pair of hot-rolling and second pair of hot-rolling carry out level-one drawing-off (high drafting), third between hot-rolling and second pair of hot-rolling into
Row second level drawing-off (low power drawing-off), and in third to the nervous sizing of completion on hot-rolling；The temperature of first pair of hot-rolling be 50 DEG C, second
Temperature to hot-rolling is 170 DEG C, and third is 200 DEG C to the temperature of hot-rolling, and level-one draft ratio is 2.8, and second level draft ratio is
2.0；Wherein, in step (5) tow third to the residence time on hot-rolling be 0.068 second；
(6) wind: will by step (5) treated that tow is wound after network is twisted, it is bright and beautiful to obtain superhigh intensity
66 fiber of synthetic fibre；Wherein, the speed of the winding is 1800m/min, winds relaxation than being 0.8.
The performance test results of the superhigh intensity 66 nylon fiber prepared using the production method described in this implementation are referring to table
1。
Embodiment 3:
A kind of production method of superhigh intensity 66 nylon fiber, comprising the following steps:
(1) it polymerize: the nylon 66 salt solution that mass percentage concentration is 55% is concentrated, is polymerize, molten condition is obtained
The glutinous polymerization spinning melt of height, the formic acid relative viscosity of the high glutinous polymerization spinning melt is 85；
(2) spinning: the glutinous polymerization spinning melt of height is delivered in manifold by melt pipe, and spinning is quantitatively pressed into through metering pump
Silk component, is then ejected in manifold by spinneret and forms tow；Wherein, the temperature of the melt pipe is 285 DEG C；It is described
The temperature of manifold is 305 DEG C；Residence time of the high glutinous polymerization spinning melt in filament spinning component is 2.5min；The spray
The hole count of filament plate is 230 holes/plate, pitch of holes 7.5mm, aperture 0.2mm, draw ratio 2.0；
(3) cooling: side-blown air cooling to be carried out to the tow that step (2) obtains, temperature≤16 DEG C of the cross air blasting are side-blown
The humidity of wind is 80%, and wind speed 0.8-1.5m/s, wind speed is gradually reduced from top to bottom；
(4) it oils: the tow being cooled and shaped after step (3) processing being oiled, the finish after oiling on tow is attached
Amount be tow weight 1.8%；
(5) drawing-off, sizing: using three pairs of hot-rollings, to step (4), treated that tow carries out drafting forming processing, wherein
Between first pair of hot-rolling and second pair of hot-rolling carry out level-one drawing-off (high drafting), third between hot-rolling and second pair of hot-rolling into
Row second level drawing-off (low power drawing-off), and in third to the nervous sizing of completion on hot-rolling；The temperature of first pair of hot-rolling be 80 DEG C, second
Temperature to hot-rolling is 210 DEG C, and third is 220 DEG C to the temperature of hot-rolling, and level-one draft ratio is 4.0, and second level draft ratio is
1.0；Wherein, in step (5) tow third to the residence time on hot-rolling be 0.05 second；
(6) wind: will by step (5) treated that tow is wound after network is twisted, it is bright and beautiful to obtain superhigh intensity
66 fiber of synthetic fibre；Wherein, the speed of the winding is 2500m/min, winds relaxation than being 0.92.
The performance test results of the superhigh intensity 66 nylon fiber prepared using the production method described in this implementation are referring to table
1。
Embodiment 4:
A kind of production method of superhigh intensity 66 nylon fiber, comprising the following steps:
(1) it polymerize: the nylon 66 salt solution that mass percentage concentration is 50% is concentrated, is polymerize, molten condition is obtained
The glutinous polymerization spinning melt of height, the formic acid relative viscosity of the high glutinous polymerization spinning melt is 80；
(2) spinning: the glutinous polymerization spinning melt of height is delivered in manifold by melt pipe, and spinning is quantitatively pressed into through metering pump
Silk component, is then ejected in manifold by spinneret and forms tow；Wherein, the temperature of the melt pipe is 290 DEG C；It is described
The temperature of manifold is 310 DEG C；Residence time of the high glutinous polymerization spinning melt in filament spinning component is 2.5min；The meter
Amount pump goes out formula for one into four；The hole count of the spinneret is 180 holes/plate, pitch of holes 8.0mm, aperture 0.28mm, draw ratio
It is 1.6；
(3) cooling: side-blown air cooling to be carried out to the tow that step (2) obtains, temperature≤13 DEG C of the cross air blasting are side-blown
The humidity of wind is 78%, and wind speed 0.8-1.5m/s, wind speed is gradually reduced from top to bottom；
(4) it oils: the tow being cooled and shaped after step (3) processing being oiled, the finish after oiling on tow is attached
Amount be tow weight 1.5%；
(5) drawing-off, sizing: using three pairs of hot-rollings, to step (4), treated that tow carries out drafting forming processing, wherein
Between first pair of hot-rolling and second pair of hot-rolling carry out level-one drawing-off (high drafting), third between hot-rolling and second pair of hot-rolling into
Row second level drawing-off (low power drawing-off), and in third to the nervous sizing of completion on hot-rolling；The temperature of first pair of hot-rolling be 60 DEG C, second
Temperature to hot-rolling is 180 DEG C, and third is 220 DEG C to the temperature of hot-rolling, and level-one draft ratio is 4.0, and second level draft ratio is
1.8；Wherein, tow is 0.072 second to the residence time on hot-rolling in third；
(6) wind: will by step (5) treated that tow is wound after network is twisted, it is bright and beautiful to obtain superhigh intensity
66 fiber of synthetic fibre；Wherein, the speed of the winding is 2800m/min, winds relaxation than being 0.9.
The performance test results of the superhigh intensity 66 nylon fiber prepared using the production method described in this implementation are referring to table
1。
Embodiment 5:
A kind of production method of superhigh intensity 66 nylon fiber, comprising the following steps:
(1) it polymerize: the nylon 66 salt solution that mass percentage concentration is 52% is concentrated, is polymerize, molten condition is obtained
The glutinous polymerization spinning melt of height, the formic acid relative viscosity of the high glutinous polymerization spinning melt is 82；
(2) spinning: the glutinous polymerization spinning melt of height is delivered in manifold by melt pipe, and spinning is quantitatively pressed into through metering pump
Silk component, is then ejected in manifold by spinneret and forms tow；Wherein, the temperature of the melt pipe is 288 DEG C；It is described
The temperature of manifold is 310 DEG C；Residence time of the high glutinous polymerization spinning melt in filament spinning component is 2min；The metering
Pump is one-in-and-one-out formula；The hole count of the spinneret is 200 holes/plate, and pitch of holes 7.8mm, aperture 0.22mm, draw ratio is
1.8；
(3) cooling: side-blown air cooling to be carried out to the tow that step (2) obtains, temperature≤14 DEG C of the cross air blasting are side-blown
The humidity of wind is 80%, and wind speed 0.8-1.5m/s, wind speed is gradually reduced from top to bottom；
(4) it oils: the tow being cooled and shaped after step (3) processing being oiled, the finish after oiling on tow is attached
Amount be tow weight 1.2%；
(5) drawing-off, sizing: using three pairs of hot-rollings, to step (4), treated that tow carries out drafting forming processing, wherein
Between first pair of hot-rolling and second pair of hot-rolling carry out level-one drawing-off (high drafting), third between hot-rolling and second pair of hot-rolling into
Row second level drawing-off (low power drawing-off), and in third to the nervous sizing of completion on hot-rolling；The temperature of first pair of hot-rolling be 55 DEG C, second
Temperature to hot-rolling is 190 DEG C, and third is 200 DEG C to the temperature of hot-rolling, and level-one draft ratio is 3.6, and second level draft ratio is
1.2；Wherein, tow is 0.055 second to the residence time on hot-rolling in third；
(6) wind: will by step (5) treated that tow is wound after network is twisted, it is bright and beautiful to obtain superhigh intensity
66 fiber of synthetic fibre；Wherein, the speed of the winding is 2000m/min, winds relaxation than being 0.85.
The performance test results of the superhigh intensity 66 nylon fiber prepared using the production method described in this implementation are referring to table
1。
The performance test results of the superhigh intensity 66 nylon fiber of 1 embodiment 1-5 of table preparation
| Performance indicator | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Breaking strength (g/d) | 10.0 | 10.2 | 10.4 | 10.1 | 10.3 |
| Elongation at break (%) | 22.0 | 20.0 | 16.0 | 19.0 | 18.5 |
| Continuous rating elongation rate (%) | 13.5 | 12.2 | 10.5 | 11.6 | 11.6 |
| Dry-hot shrinkage (%, 177 DEG C × 2min, 0.05g/d) | 4.7 | 5.9 | 7.7 | 6.4 | 6.8 |
Above is only a specific embodiment of the present invention, but technical characteristic of the invention is not limited thereto, Ren Heben
Within the field of the present invention, made changes or modifications all cover within the scope of the patent of the present invention the technical staff in field.
Claims (7)
1. a kind of production method of superhigh intensity 66 nylon fiber, which comprises the following steps:
(1) it polymerize: the nylon 66 salt solution that mass percentage concentration is 48%-55% is concentrated, is polymerize, molten condition is obtained
The glutinous polymerization spinning melt of height, the formic acid relative viscosity of the high glutinous polymerization spinning melt is 76-85；
(2) spinning: the glutinous polymerization spinning melt of height is delivered in manifold by melt pipe, and spinning group is quantitatively pressed into through metering pump
Then part is ejected in manifold by spinneret and forms tow, wherein the temperature of the manifold is 305-325 DEG C, the height
Residence time of the glutinous polymerization spinning melt in filament spinning component is 1.5-2.5min；
(3) cooling: the side-blown air cooling of tow progress that step (2) is obtained, temperature≤16 DEG C of the cross air blasting, cross air blasting
Humidity is 70%-80%, wind speed 0.8-1.5m/s；
(4) it oils: the tow being cooled and shaped after step (3) processing is oiled, the finish adhesion amount after oiling on tow
It is the 1.0%~1.8% of tow weight；
(5) drawing-off, sizing: using three pairs of hot-rollings, to step (4), treated that tow carries out drafting forming processing, wherein first
To between hot-rolling and second pair of hot-rolling carry out level-one drawing-off, third between hot-rolling and second pair of hot-rolling carry out second level drawing-off, and
In third to the nervous sizing of completion on hot-rolling；The temperature of first pair of hot-rolling is 50-80 DEG C, and the temperature of second pair of hot-rolling is 170-
210 DEG C, third is 200-220 DEG C to the temperature of hot-rolling, and level-one draft ratio is 2.8-4.0, and second level draft ratio is 1.0-
2.0；
(6) wind: will by step (5) treated that tow is wound after network is twisted, obtain superhigh intensity polyamide fibre 66
Fiber.
2. production method according to claim 1, which is characterized in that the temperature of melt pipe described in step (2) is
285-295℃。
3. production method according to claim 1, which is characterized in that metering pump described in step (2) is one-in-and-one-out formula
Or one into four go out formula.
4. production method according to claim 1, which is characterized in that the hole count of spinneret described in step (2) is 104-
230 holes/plate, pitch of holes 7.5-9.0mm, aperture 0.2-0.3mm, draw ratio 1.5-2.0.
5. production method according to claim 1, which is characterized in that tow stops in third on hot-rolling in step (5)
Staying the time is 0.05-0.09 seconds.
6. production method according to claim 1, which is characterized in that the speed of winding described in step (6) is 1800-
3000m/min winds relaxation than being 0.8-0.92.
7. a kind of superhigh intensity 66 nylon fiber using any one of the claim 1-6 production method preparation, feature exist
In the breaking strength of the superhigh intensity 66 nylon fiber is 10.0-10.4g/d, elongation at break 16%-22%, is born calmly
Lotus elongation is 10.5%-13.5%, and dry-hot shrinkage 4.7-7.7%, strength retention is > 90%.
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Inventor after: Zhang Dianzi Inventor after: Zhao Erwei Inventor after: Wang Jinlin Inventor after: Zhang Chao Inventor after: Xue Shan Inventor after: Shan Bingquan Inventor after: Li Lianchen Inventor after: Yuan Xiaoming Inventor after: Shi Hua Inventor after: Kou Wanhong Inventor after: Zhang Luya Inventor after: Li Xin Inventor after: Chang Meiying Inventor after: Wang Anle Inventor after: Lv Wenjuan Inventor after: Li Pengxiang Inventor after: Hou Yanpo Inventor after: Xie Qiaoli Inventor before: Zhang Luya Inventor before: Wang Jinlin Inventor before: Zhang Chao Inventor before: Xue Shan Inventor before: Shan Bingquan Inventor before: Li Lianchen Inventor before: Yuan Xiaoming Inventor before: Shi Hua Inventor before: Kou Wanhong Inventor before: Li Xin Inventor before: Chang Meiying Inventor before: Wang Anle Inventor before: Lv Wenjuan Inventor before: Li Pengxiang Inventor before: Hou Yanbo Inventor before: Xie Qiaoli Inventor before: Zhao Erwei |