CN105862152A - Production method for high-speed spinning low-stretching high-modulus low-shrinkage polyester industrial filaments - Google Patents
Production method for high-speed spinning low-stretching high-modulus low-shrinkage polyester industrial filaments Download PDFInfo
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- CN105862152A CN105862152A CN201610391451.1A CN201610391451A CN105862152A CN 105862152 A CN105862152 A CN 105862152A CN 201610391451 A CN201610391451 A CN 201610391451A CN 105862152 A CN105862152 A CN 105862152A
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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
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
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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
- D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
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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
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- Artificial Filaments (AREA)
Abstract
The invention discloses a production method for high-speed spinning low-stretching high-modulus low-shrinkage polyester industrial filaments. The method is characterized by comprising the technological steps of 1, preparation of high-viscosity chips, wherein low-viscosity chips are subjected to solid-phase polymerization to obtain the high-viscosity chips with the viscosity being 1.00-1.20 dl/g; 2, melt spinning, wherein the high-viscosity chips prepared in the step 1 enter a screw extruder through a chip stock bin under the nitrogen protection to be subjected to melt extrusion to form a high-viscosity melt, then enter a spinning manifold through a melt header pipe to be distributed to melt branch pipes, and then enter an assembly through a metering pump, and sprayed spun filaments are subjected to circular blowing cooling forming through a slow cooling region and a heat insulation region and then enter a spinning chimney for drafting and winding; 3, drafting thermoforming, wherein oil is applied to the filaments through an oil wheel after the filaments enter the spinning chimney, and drafting, thermoforming and slacking are performed through six double rollers at the certain spinning speed; 4, winding forming, wherein after fiber of the step 3 is subjected to network processing, and winding forming is performed through a high-speed winding head at the winding speed of 5800-6500 m/min to obtain the high-speed spinning low-stretching high-modulus low-shrinkage polyester industrial filaments.
Description
Technical field
The present invention relates to fiber product manufacturing technology field, be specifically related to the production method of a kind of high-speed spinning low stretching HMLS terylene polyester industrial yarn.
Background technology
HMLS terylene polyester industrial yarn is the important kind of polyester industrial filament yarn, the premium properties such as this product is big with its fracture strength, initial modulus is high, shrinkage factor is low, good stability of the dimension, resistance to impact are good, are widely used in the framework material of automobile cord fabric and mechanical rubber good.In traditional HMLS terylene polyester industrial yarn production method, it uses higher draft ratio (total draft multiplying power about 2.0), higher hot-rolling heat setting temperature (more than 250 DEG C), relatively low spinning winding speed (below 5800m/min), the production capacity low energy consumption causing spinning to produce is high, and HMLS terylene polyester industrial yarn twists thread and weaves cotton cloth after impregnation, owing to higher draft ratio can cause impregnation strength loss relatively big (more than 10%), so that its product size stability can not preferably be kept, the technological development of road processing after impact.Equipping and the continuous progress of Technology along with producing, the performance requirement of HMLS terylene polyester industrial yarn gradually steps up.
The Chinese patent of Application No. 201210094539.9 discloses a kind of liquid-phase tackifying fusant bull direct spinning terylene industrial silk production technology, uses three-dimensional liquid-phase tackifying reactor in the production technology wherein mentioned, the height obtained glues melt to carry out measuring-spinning；The Chinese patent of Application No. 201210322435.9 discloses the manufacture method of a kind of High-strength low-elongation polyester industrial filament, the terylene chips used in its technique is the viscous section of the height obtained by solid-phase tack producing, its intrinsic viscosity is 1.0-1.2dl/g, glues section by height and carries out measuring-spray webbing-cool down-oil-stretch-thermal finalization-coiling and molding.But above-mentioned patent is only applicable to produce high-strength or lower shrinkage type polyester industrial yarn, its speed of absconding with valuables is unable to reach described herein 5800～6500m/min high-speed spinning low stretching HMLS terylene polyester industrial yarn level.
The Chinese patent of Application No. 201210542775.2 relate to a kind of activated form height mould lower shrinkage and preparation method thereof, wherein it is also mentioned that use screw rod to add heat fusing, but this patent pays attention to the improvement by functional type activating finish, to improve the bonding force of industrial yarn and rubber, purpose is for reducing post-treatment manufacturing cost.But high-speed spinning described herein low stretching HMLS terylene polyester industrial yarn is different from traditional HMLS terylene polyester industrial yarn production method, pay attention to the HMLS terylene polyester industrial yarn for obtaining having superior quality, improved strength retention and the dimensional stability of industrial yarn by high speed spinning and low drawing process, improve production capacity simultaneously and reduce energy consumption.
Summary of the invention
The technical problem to be solved in the present invention is: provide the production method of a kind of high-speed spinning low stretching HMLS terylene polyester industrial yarn, higher ultimate strength can be obtained equally under the low stretching condition of high-speed spinning, it is possible not only to that improving twists thread and weaves cotton cloth the impregnation strength retention after impregnation, improve the dimensional stability of its goods, it is also possible to improve production capacity and reduce energy consumption.
The technical scheme is that the production method of a kind of high-speed spinning low stretching HMLS terylene polyester industrial yarn, comprise the following steps that:
(1) preparation of high viscous section: low viscous section is obtained, through solid phase, the viscous section of height that viscosity is 1.00～1.20dl/g；
(2) melt spinning: the viscous section of high step (1) prepared enters spinning manifold through melt house steward after being become high plastic state melt by chip bunker entrance screw extruder melt extruded under nitrogen protection and is assigned to each melt arm; assembly is entered again through dosing pump; the spun filament of ejection enters spinning shaft behind slow cooling district and thermal insulation areas, ring quenching molding and winds to drawing-off；
(3) drawing and heat-setting: tow goes out after spinning shaft after oil tanker oils, carries out drawing-off, thermal finalization and lax through six pairs of rollers under certain spinning speed；
(4) coiling and molding: through the fiber of step (3) after network processes, by high speed winding head coiling and molding under the winding speed of 5800～6500m/min, obtain product HMLS terylene polyester industrial yarn.
Described height glue the carboxyl-content of section≤
16mol/t, dust content≤100ppm, moisture≤
30ppm。
In step (1); described solid-phase tack producing is to be cut into slices under the protection of inert nitrogen gas by the low viscous type spinning grade polyester that viscosity is 0.65～0.71dl/g; first crystallize at 150～170 DEG C; then polycondensation reaction is carried out in entering back into 200～225 DEG C of reactors; the time of staying is 22～26 hours; obtaining high viscous section, b value is less than 3.
In step (2), the viscous section of described height heats extrusion molten through screw extruder in 285～315 DEG C, screw outlet melt temperature 285～295 DEG C, screw outlet pressure 130～160Bar, annealer temperature is 300～340 DEG C, slow cooling district height is 100～200mm, and thermal insulation areas height is 50～100mm, ring blowing temperature 45～60 DEG C, ring blowing humidity >=30%.
In step (2), the screw outlet of described screw extruder, melt pipe to spinning manifold use biphenyl insulation, and diphyl steam temperature 295 ± 5 DEG C, the biphenyl temperature of screw outlet is 295 ± 5 DEG C, and the biphenyl temperature of spinning manifold is 295 ± 5 DEG C.After the pump of dosing pump, pressure is 16～26MPa, and filtering accuracy is 15～25 μm, a diameter of 220mm of spinneret, and spinneret hole count is 300～500f；
In step (3), arranging oil tanker below described spinning shaft, the employing independent oil tanker of every synnema that oils oils, and the mass percent concentration of oil preparation is 10～25%, and oil applying rate is 0.5% ± 0.2%；
In step (3), described spinning speed is 3200～4000m/min, and hot-rolling total draft multiplying power is 1.65～1.95, hot-rolling relaxation rate 0.95～1.02；
In step (3), first pair of described heat roller temperature is 60～90 DEG C, and second pair of heat roller temperature is 80～110 DEG C, third and fourth, five pairs of heat roller temperatures be 220～250 DEG C, the 6th pair of heat roller temperature is 80～130 DEG C；
Described a kind of high-speed spinning low stretching HMLS terylene polyester industrial yarn, its fracture strength ＞ 7.0cN/dt, extension at break 13 ± 2%, dry-hot shrinkage 3.0 ± 0.5% (177 DEG C, 2min, 0.05cN/dt), percentage elongation 5.0 ± 0.5% under 4.0 cN/dt constant loads, fiber number is 1100～2400dtex, and after impregnation, strength loss is less than 10%.
Beneficial effects of the present invention: the present invention is by improving the degree of polymerization of polyester macromolecule, high speed spinning, effective tow cooling, relatively low drafting multiple and suitable heat setting temperature can obtain higher ultimate strength, higher initial modulus, the HMLS terylene polyester industrial yarn of the excellent properties such as relatively low elongation at specified load and relatively low dry-hot shrinkage.Compared with traditional HMLS terylene polyester industrial yarn production method, its heat roller temperature is relatively low, and winding speed is of a relatively high, illustrates that the present invention is while obtaining having the HMLS terylene polyester industrial yarn of excellent properties, moreover it is possible to improves production capacity and reduces energy consumption.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
Production technology: solid-phase tack producing melt spinning drawing-off, winding.
Embodiment one: the production method of a kind of high-speed spinning low stretching HMLS terylene polyester industrial yarn (specification: 1100dtex/320f), comprises the following steps that:
(1) preparation of high viscous section: the low viscous type spinning grade polyester that viscosity is 0.68dl/g is cut into slices under the protection of inert nitrogen gas; first crystallize at 150～170 DEG C; then polycondensation reaction is carried out in entering back into 200～225 DEG C of reactors; the time of staying is 25 hours; the viscosity obtaining high viscous section is that 1.10dl/g, b value is less than 3；Described height glues the carboxyl-content≤16mol/t of section, dust content≤100ppm, moisture≤30ppm.
(2) melt spinning: enter spinning manifold through melt house steward after viscous for the height of preparation section is become high plastic state melt by chip bunker entrance screw extruder melt extruded under nitrogen protection and be assigned to each melt arm; assembly is entered again through dosing pump; the spun filament of ejection enters spinning shaft behind slow cooling district and thermal insulation areas, ring quenching molding and winds to drawing-off；The viscous section of described height heats extrusion molten through screw extruder, screw extruder first is respectively 305 DEG C/315 DEG C/310 DEG C/280 DEG C/280 DEG C/280 DEG C/280 DEG C to SECTOR-SEVEN temperature, screw outlet melt temperature 292 DEG C, screw outlet pressure 135Bar, annealer temperature is 320 DEG C, slow cooling district height is 200mm, and thermal insulation areas height is 100mm, ring blowing temperature 50 C；The screw outlet of described screw extruder, melt pipe use biphenyl insulation to spinning manifold, and diphyl steam temperature 292 DEG C, after the pump of dosing pump, pressure is 18MPa.
(3) drawing and heat-setting: tow goes out after spinning shaft after oil tanker oils, carries out drawing-off, thermal finalization and lax through six pairs of rollers under certain spinning speed；Arranging oil tanker below described spinning shaft, the employing independent oil tanker of every synnema that oils oils, and the mass percent concentration of oil preparation is 18%；Described spinning speed is 3520m/min, and hot-rolling total draft multiplying power is 1.80, hot-rolling relaxation rate 0.97；First pair of described heat roller temperature is 75 DEG C, and second pair of heat roller temperature is 90 DEG C, third and fourth, five pairs of heat roller temperatures be 244 DEG C, the 6th pair of heat roller temperature is 110 DEG C；
(4) coiling and molding: through the fiber of step (3) after network processes, by high speed winding head coiling and molding under the winding speed of 6100m/min, obtain product HMLS terylene polyester industrial yarn.
The high-speed spinning low stretching HMLS terylene polyester industrial yarn that the present embodiment produces, line density is 1130dtex, its fracture strength 7.15cN/dt, extension at break 13.2%, dry-hot shrinkage 2.95% (177 DEG C, 2min, 0.05cN/dt), percentage elongation 5.05% under 4.0 cN/dt constant loads, dimensional stability (is stretched under dry-hot shrinkage and constant load.
Claims (9)
1. a high-speed spinning low stretching HMLS terylene polyester industrial yarn production method, it is characterised in that: comprise the following steps that:
(1) preparation of high viscous section: low viscous section is obtained, through solid phase, the viscous section of height that viscosity is 1.00～1.20dl/g；
(2) melt spinning: the viscous section of high step (1) prepared enters spinning manifold through melt house steward after being become high plastic state melt by chip bunker entrance screw extruder melt extruded under nitrogen protection and is assigned to each melt arm; assembly is entered again through dosing pump; the spun filament of ejection enters spinning shaft behind slow cooling district and thermal insulation areas, ring quenching molding and winds to drawing-off；
(3) drawing and heat-setting: tow goes out after spinning shaft after oil tanker oils, carries out drawing-off, thermal finalization and lax through six pairs of rollers under certain spinning speed；
(4) coiling and molding: through the fiber of step (3) after network processes, by high speed winding head coiling and molding under the winding speed of 5800～6500m/min, obtain product HMLS terylene polyester industrial yarn.
A kind of high-speed spinning low stretching HMLS terylene polyester industrial yarn production method the most according to claim 1, it is characterised in that: described height glues the carboxyl-content≤16mol/t of section, dust content≤100ppm, moisture≤30ppm.
A kind of high-speed spinning low stretching HMLS terylene polyester industrial yarn production method the most according to claim 1; it is characterized in that: in step (1); described solid-phase tack producing is to be cut into slices under the protection of inert nitrogen gas by the low viscous type spinning grade polyester that viscosity is 0.65～0.71dl/g; first crystallize at 150～170 DEG C; then polycondensation reaction is carried out in entering back into 200～225 DEG C of reactors; the time of staying is 22～26 hours, obtains high viscous section, and b value is less than 3.
A kind of high-speed spinning low stretching HMLS terylene polyester industrial yarn production method the most according to claim 1, it is characterized in that: in step (2), the viscous section of described height heats extrusion molten through screw extruder in 285～315 DEG C, screw outlet melt temperature 285～295 DEG C, screw outlet pressure 130～160Bar, annealer temperature is 300～340 DEG C, and slow cooling district height is 100～200mm, thermal insulation areas height is 50～100mm, ring blowing temperature 45～60 DEG C, ring blowing humidity >=30%.
A kind of high-speed spinning low stretching HMLS terylene polyester industrial yarn production method the most according to claim 1, it is characterized in that: in step (2), the screw outlet of described screw extruder, melt pipe use biphenyl insulation to spinning manifold, diphyl steam temperature 295 ± 5 DEG C, the biphenyl temperature of screw outlet is 295 ± 5 DEG C, and the biphenyl temperature of spinning manifold is 295 ± 5 DEG C；After the pump of dosing pump, pressure is 16～26MPa, and filtering accuracy is 15～25 μm, a diameter of 220mm of spinneret, and spinneret hole count is 300～500f.
A kind of high-speed spinning low stretching HMLS terylene polyester industrial yarn production method the most according to claim 1, it is characterized in that: in step (3), below described spinning shaft, oil tanker is set, the employing independent oil tanker of every synnema that oils oils, the mass percent concentration of oil preparation is 10～25%, and oil applying rate is 0.5% ± 0.2%.
A kind of high-speed spinning low stretching HMLS terylene polyester industrial yarn production method the most according to claim 1, it is characterized in that: in step (3), described spinning speed is 3200～4000m/min, and hot-rolling total draft multiplying power is 1.65～1.95, hot-rolling relaxation rate 0.95～1.02.
A kind of high-speed spinning low stretching HMLS terylene polyester industrial yarn production method the most according to claim 1, it is characterized in that: in step (3), first pair of described heat roller temperature is 60～90 DEG C, second pair of heat roller temperature is 80～110 DEG C, third and fourth, five pairs of heat roller temperatures be 220～250 DEG C, the 6th pair of heat roller temperature is 80～130 DEG C.
A kind of high-speed spinning low stretching HMLS terylene polyester industrial yarn production method the most according to claim 1, it is characterized in that: described a kind of high-speed spinning low stretching HMLS terylene polyester industrial yarn, its fracture strength ＞ 7.0cN/dt, extension at break 13 ± 2%, and dry-hot shrinkage 3.0 ± 0.5% (177 DEG C, 2min, 0.05cN/dt), percentage elongation 5.0 ± 0.5% under 4.0 cN/dt constant loads, fiber number is 1100～2400dtex, and after impregnation, strength loss is less than 10%.
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Cited By (13)
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| CN107338488A (en) * | 2016-08-30 | 2017-11-10 | 桐乡守敬应用技术研究院有限公司 | A kind of polyester industrial yarn production method |
| CN108315830A (en) * | 2017-12-29 | 2018-07-24 | 桐昆集团股份有限公司 | A kind of production method producing rope elater using PTT and PET |
| CN108588866A (en) * | 2018-05-10 | 2018-09-28 | 无锡索力得科技发展有限公司 | A kind of production method of ocean hawser polyester industrial yarn |
| CN108660536A (en) * | 2018-05-10 | 2018-10-16 | 无锡索力得科技发展有限公司 | A kind of production method of 12 spinning fine denier high intensity low shrinkage type polyester industrial yarns of high-quality |
| CN108677269A (en) * | 2018-05-14 | 2018-10-19 | 无锡索力得科技发展有限公司 | A kind of production method of high-quality flame-resistant terylene industrial yarn |
| CN110158189A (en) * | 2019-05-27 | 2019-08-23 | 浙江海利得新材料股份有限公司 | A kind of preparation method of high mode and low mode type flame-resistant terylene industrial yarn |
| CN110172750A (en) * | 2019-05-27 | 2019-08-27 | 浙江海利得新材料股份有限公司 | A kind of high mode and low mode type flame-resistant terylene industrial yarn preparation method |
| CN111485297A (en) * | 2020-03-23 | 2020-08-04 | 扬州海众织物有限公司 | Shaping method of plastic woven base fabric |
| CN111676527A (en) * | 2020-06-04 | 2020-09-18 | 太仓振辉化纤有限公司 | Method for manufacturing one-plate double-bundle superfine denier polyester pre-oriented yarn |
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| CN107338488A (en) * | 2016-08-30 | 2017-11-10 | 桐乡守敬应用技术研究院有限公司 | A kind of polyester industrial yarn production method |
| CN108315830A (en) * | 2017-12-29 | 2018-07-24 | 桐昆集团股份有限公司 | A kind of production method producing rope elater using PTT and PET |
| CN108588866A (en) * | 2018-05-10 | 2018-09-28 | 无锡索力得科技发展有限公司 | A kind of production method of ocean hawser polyester industrial yarn |
| CN108660536A (en) * | 2018-05-10 | 2018-10-16 | 无锡索力得科技发展有限公司 | A kind of production method of 12 spinning fine denier high intensity low shrinkage type polyester industrial yarns of high-quality |
| CN108677269A (en) * | 2018-05-14 | 2018-10-19 | 无锡索力得科技发展有限公司 | A kind of production method of high-quality flame-resistant terylene industrial yarn |
| CN110158189A (en) * | 2019-05-27 | 2019-08-23 | 浙江海利得新材料股份有限公司 | A kind of preparation method of high mode and low mode type flame-resistant terylene industrial yarn |
| CN110172750A (en) * | 2019-05-27 | 2019-08-27 | 浙江海利得新材料股份有限公司 | A kind of high mode and low mode type flame-resistant terylene industrial yarn preparation method |
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