CN106829633B - Polyamide fiber package and production method thereof - Google Patents

Polyamide fiber package and production method thereof Download PDF

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Publication number
CN106829633B
CN106829633B CN201710105862.4A CN201710105862A CN106829633B CN 106829633 B CN106829633 B CN 106829633B CN 201710105862 A CN201710105862 A CN 201710105862A CN 106829633 B CN106829633 B CN 106829633B
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Prior art keywords
polyamide
production method
polyamide fiber
winding
fiber tows
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CN106829633A (en
Inventor
孙朝续
徐晓辰
秦兵兵
刘修才
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Cathay Wusu Biomaterial Co ltd
Cathay R&D Center Co Ltd
CIBT America Inc
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Cathay R&D Center Co Ltd
Cathay Industrial Biotech Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/14—Pulleys, rollers, or rotary bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
    • C08G69/28—Preparatory processes
    • 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
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • 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
    • 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
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/90—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments
    • B65H2701/313—Synthetic polymer threads
    • B65H2701/3132—Synthetic polymer threads extruded from spinnerets

Abstract

The invention provides a polyamide fiber package and a production method thereof, wherein the production method comprises the following steps: winding the polyamide fiber tows to obtain a polyamide fiber package; the ambient temperature of the winding roll during winding is 18-25 ℃. The method can avoid the phenomenon that the long carbon chain polyamide is easy to loose and soften or collapse during the production of winding processing molding, thereby being capable of stably producing at different winding speeds.

Description

Polyamide fiber package and production method thereof
Technical Field
The invention belongs to the technical field of polyamide materials, and relates to a polyamide fiber package and a production method thereof.
Background
The polyamide fiber is one of the synthetic fibers which are put into industrial production at the earliest time in the world and is also a main variety of the synthetic fiber, and the polyamide fiber refers to a class of synthetic fibers of which fiber macromolecular main chains are connected through amido bonds. There are many varieties of polyamide fibers, and polyamide 6 and polyamide 66 are mainly produced and applied most widely in industrialization at present.
The long carbon chain polyamide has the most universality (such as wear resistance, compression resistance, lubricating property, solvent resistance and easy processability) of common polyamide, and also has the unique properties of high toughness and flexibility, excellent electrical property, wear resistance and the like. In particular to a fabric made of long carbon chain polyamide 5X fiber, which has good hand feeling and antistatic performance. At present, the research on long carbon chain polyamide 5X is less, and no related system is reported on a winding forming process.
Although long carbon chain polyamide belongs to polyamide, the long carbon chain polyamide is not easy to cool after spinning in the same spinning winding forming process, so that the phenomenon that the winding yarn is easy to relax and soften or collapse on a winding roller is caused, and the spinning effect and the fiber quality are influenced. In order to improve the problems, the prior art carries out a plurality of improvements on the spinning method, but the effects are not obvious.
Disclosure of Invention
A first object of the present invention is to provide a method for producing a polyamide fiber package, which can prevent the polyamide fiber from easily sagging or sagging on a take-up roll.
A second object of the present invention is to provide a polyamide fiber package obtained by the above-mentioned method for producing a polyamide fiber package.
In order to achieve the above purpose, the solution of the invention is as follows:
a method of producing a package of polyamide fibers comprising the steps of: winding a polyamide fiber tow to obtain the polyamide fiber package; preferably, the winding roller is in an ambient temperature of 18-25 ℃ during winding.
The ambient temperature to which the winding roller is subjected is preferably 20-23 ℃.
The winding roller is preferably subjected to an ambient humidity of 60 to 80%, more preferably 65 to 75%.
In a method of producing a polyamide fiber package, the winding process comprises the steps of: and (3) enabling the polyamide fiber tows to pass through a spinning channel, then enabling the polyamide fiber tows to enter a winding roller under the driving of a godet roller or a hot roller, and winding the polyamide fiber tows by the winding roller to form a polyamide fiber package.
Wherein the length of the spinning shaft is 3 to 12m, preferably 5 to 10m, more preferably 6 to 8 m.
The winding speed of the winding roller is 500-8000m/min, preferably 800-7000m/min, more preferably 1000-6000m/min, and further preferably 1500-5000 m/min.
The production method of the polyamide fiber tows comprises the following steps: and spinning the polyamide to obtain the polyamide fiber tows.
The spinning method comprises the following steps: chip spinning or melt direct spinning.
Specifically, the production method of the polyamide fiber tows comprises the following steps:
(1) polymerizing diamine and diacid to form a polyamide melt; alternatively, the first and second electrodes may be,
heating polyamide resin to a molten state to form a polyamide melt;
(2) spraying the polyamide melt through a spinning nozzle of a spinneret plate to obtain primary yarns;
(3) and cooling and oiling the as-spun yarn to form the polyamide fiber tow.
In the step (1), the number of carbon atoms of the dibasic acid is preferably not less than 9, and may preferably be 9 to 18. The dibasic acid is preferably a dicarboxylic acid.
In the step (1), the number of carbon atoms of the diamine is preferably 2 to 6, more preferably 3 to 5, and still more preferably 1, 5-pentanediamine.
The polyamide resin is mainly composed of a dibasic acid unit having 9 or more carbon atoms and a diamine unit having 2 to 6 carbon atoms. For example, the polyamide resin is polyamide 49, polyamide 410, polyamide 411, polyamide 412, polyamide 413, polyamide 414, polyamide 415, polyamide 416, polyamide 417, polyamide 418, polyamide 59, polyamide 510, polyamide 511, polyamide 512, polyamide 513, polyamide 514, polyamide 515, polyamide 516, polyamide 517, polyamide 518, polyamide 69, polyamide 610, polyamide 611, polyamide 612, polyamide 613, polyamide 614, polyamide 615, polyamide 616, polyamide 617, polyamide 618, or the like.
Preferably, the polyamide resin is mainly composed of a dibasic acid unit having 9 to 18 carbon atoms and a pentamethylenediamine unit.
In the step (1), according to specific conditions, the raw materials for producing the polyamide fiber may include, in addition to the dibasic acid and the diamine: a comonomer.
Preferably, the comonomers comprise: any one or more of aliphatic dicarboxylic acid, alicyclic dicarboxylic acid, aromatic dicarboxylic acid, ethylenediamine, hexamethylenediamine, cyclohexanediamine, xylylenediamine, 6-aminocaproic acid, 11-aminoundecanoic acid, 12-aminododecanoic acid, p-aminomethylbenzoic acid, epsilon-caprolactam and omega-laurolactam.
The number of moles of the comonomer added is 0 to 20%, preferably 0 to 15%, more preferably 0 to 10%, and still more preferably 0 to 5% of the total number of moles of the dibasic acid and the diamine added, and the comonomer may not be added. The comonomer is polymerized to form a copolymerization unit, and the copolymerization unit can be a dibasic acid unit with the carbon number less than 9, a diamine unit with the carbon number more than 6 or an amino acid unit. When no comonomer is added, no copolymerized units are present.
In the step (1), according to specific conditions, the raw materials for producing the polyamide fiber may include, in addition to the dibasic acid and the diamine: and (3) an additive.
Preferably, the additive comprises: any one or more of a delustering agent, a flame retardant, an antioxidant, an ultraviolet absorber, an infrared absorber, a crystallization nucleating agent, a fluorescent brightener and an antistatic agent.
The additive is added in an amount of 0.001 to 10%, preferably 0.005 to 8%, more preferably 0.01 to 5%, further preferably 0.05 to 2.5%, and further preferably 0.1 to 2.0% of the total weight of the production raw materials.
In the step (1), the polyamide resin is polyamide resin chips. The relative viscosity thereof is preferably 1.5 to 4.0, more preferably 2.4 to 3.8, and still more preferably 2.5 to 3.5.
When the production raw material for the polyamide fiber further comprises a comonomer, the comonomer is added in step (1).
When the raw material for producing the polyamide fiber further comprises an additive, the additive is added in the step (1).
In the step (1), the polymerization comprises the following steps:
(1-1) under the condition of nitrogen, uniformly mixing 1, 5-pentanediamine, dibasic acid and water to prepare a salt solution of polyamide; wherein the molar ratio of the 1, 5-pentanediamine to the dibasic acid is (1-1.05): 1;
(1-2) heating the salt solution of the polyamide, raising the pressure in the reaction system to 0.3-2.0Mpa, exhausting, maintaining the pressure, reducing the pressure to reduce the pressure in the reaction system to 0-0.2Mpa in gauge pressure, and vacuumizing to-0.08-0.01 Mpa in vacuum degree to obtain the polyamide melt.
When the production raw material for polyamide fibers further comprises a comonomer, the comonomer is added in step (1-1).
When the raw material for producing polyamide fibers further comprises an additive, the additive is added in step (1-1).
Wherein, in the step (1-2), the temperature of the reaction system at the end of the pressure holding is preferably 232-.
Preferably, in the step (1-2), the temperature of the reaction system after the end of the depressurization is 245-280 ℃.
Preferably, in the step (1-2), the temperature after the vacuum pumping is 260 ℃ to 280 ℃.
In the step (2), the drawing ratio of the spinneret is preferably 80-200, more preferably 100-150, and further preferably 110-130.
In the step (3), the cooling is preferably performed by blowing air. The wind speed of the cross-blown air is preferably 0.2 to 0.8m/s, more preferably 0.5 to 0.8 m/s. The air temperature of the cross air blow is preferably 15 to 28 ℃, more preferably 12 to 26 ℃, and further preferably 15 to 25 ℃.
The polyamide fiber tow is any one selected from polyamide Fully Drawn Yarn (FDY), polyamide pre-oriented yarn (POY), polyamide Middle Oriented Yarn (MOY), polyamide High Oriented Yarn (HOY), polyamide Fully Oriented Yarn (FOY), polyamide undrawn yarn (UDY) and polyamide Air Textured Yarn (ATY).
The titer of the polyamide fiber tow is 10 to 3000dtex, preferably 10 to 2500dtex, more preferably 10 to 2000dtex, more preferably 20 to 1000dtex, and still more preferably 20 to 500 dtex.
The breaking strength of the polyamide fiber tows is 2-6cN/dtex, preferably 2-5cN/dtex, more preferably 2-4cN/dtex, and even more preferably 2-3 cN/dtex.
The elongation at break of the polyamide fiber tow is 20 to 200%, preferably 30 to 180%, more preferably 40 to 100%, and still more preferably 40 to 60%.
The initial modulus of the polyamide fiber tows is 20-60cN/dtex, preferably 25-45cN/dtex, more preferably 28-43cN/dtex, and still more preferably 30-42 cN/dtex.
A polyamide fiber package is made of a polyamide fiber tow by the production method of the polyamide fiber package.
Due to the adoption of the scheme, the invention has the beneficial effects that:
the invention can avoid the phenomena of easy relaxation, softening or edge collapse of the long carbon chain polyamide in the winding and processing molding production by adjusting the production raw materials and various parameters of the production process, thereby being capable of stably producing at different winding speeds.
Detailed Description
The invention relates to a polyamide fiber package and a production method thereof.
< production method of Polyamide fiber Package >
A method of producing a package of polyamide fibers comprising the steps of: the polyamide fiber tow was wound to obtain a polyamide fiber package.
The production method of the polyamide fiber tows comprises the following steps: and spinning the polyamide to obtain the polyamide fiber tows.
The spinning method comprises the following steps: chip spinning or melt direct spinning.
Specifically, the production method of the polyamide fiber tows comprises the following steps:
(1) polymerizing diamine and diacid to form a polyamide melt; alternatively, the first and second electrodes may be,
heating polyamide resin to a molten state to form a polyamide melt;
(2) spraying the polyamide melt through a spinning nozzle of a spinneret plate to obtain primary yarns;
(3) and cooling and oiling the as-spun yarn to form the polyamide fiber tow.
In the step (1), the number of carbon atoms of the dibasic acid is not less than 9, and may preferably be 9 to 18.
In the step (1), the number of carbon atoms of the diamine may be 2 to 6, and preferably 3 to 5.
The polyamide is mainly composed of a dibasic acid unit having 9 or more carbon atoms and a diamine unit having 2 to 6 carbon atoms. For example, the polyamide resin is polyamide 49, polyamide 410, polyamide 411, polyamide 412, polyamide 413, polyamide 414, polyamide 415, polyamide 416, polyamide 417, polyamide 418, polyamide 59, polyamide 510, polyamide 511, polyamide 512, polyamide 513, polyamide 514, polyamide 515, polyamide 516, polyamide 517, polyamide 518, polyamide 69, polyamide 610, polyamide 611, polyamide 612, polyamide 613, polyamide 614, polyamide 615, polyamide 616, polyamide 617, polyamide 618, or the like.
Step (1) according to specific conditions, the raw materials for producing the polyamide resin may further include: either or both of a comonomer or an additive.
The comonomer can be selected from any one of dibasic acid with less than 9 carbon atoms, diamine with more than 6 carbon atoms or amino acid. The comonomer is polymerized to form a copolymerized unit, and the copolymerized unit can be a dibasic acid unit with the carbon number less than 9, a diamine unit with the carbon number more than 6 or an amino acid unit. When no comonomer is added, no copolymerized units are present. The number of moles of the comonomer added is 0 to 20%, preferably 0 to 15%, more preferably 0 to 10%, and still more preferably 0 to 5% of the total number of moles of the dibasic acid and the diamine added, and the comonomer may not be added.
The additive can be any one or more of a delustrant, a flame retardant, an antioxidant, an ultraviolet absorbent, an infrared absorbent, a crystallization nucleating agent, a fluorescent whitening agent or an antistatic agent. The additive is added in an amount of 0.001 to 10%, preferably 0.005 to 8%, more preferably 0.01 to 5%, further preferably 0.05 to 2.5%, and further preferably 0.1 to 2.0% of the total weight of the production raw materials.
In the step (1), the polyamide resin may be a polyamide resin chip.
Preferably, the relative viscosity of the polyamide resin may be 1.5 to 4.0, may be preferably 2.4 to 3.8, and may be more preferably 2.5 to 3.5.
The relative viscosity is measured as the viscosity of the polyamide resin in 96% sulfuric acid as follows:
the relative viscosity of the polyamide resin was measured by the concentrated sulfuric acid method with the use of an Ubbelohde viscometer, and the procedure was as follows: a dried polyamide resin sample (0.25. + -. 0.0002 g) was accurately weighed, dissolved by adding 50mL of concentrated sulfuric acid (96%), and the flow time t of the concentrated sulfuric acid was measured and recorded in a thermostatic water bath at 25 ℃0And a flow time t of the polyamide resin sample solution.
The relative viscosity is calculated by the formula: relative viscosity VN ═ t/t0；
t-solution flow time;
t0-solvent flow time.
When the raw material for producing the polyamide fiber further comprises a comonomer, the comonomer is added in step (1).
When the raw material for producing polyamide fibers further comprises an additive, the additive is added in step (1).
In the step (1-1), the polymerization process comprises the following steps:
(1-1) under the condition of nitrogen, uniformly mixing 1, 5-pentanediamine, dibasic acid and water to prepare a salt solution of polyamide; wherein the molar ratio of the 1, 5-pentanediamine to the dibasic acid is (1-1.05): 1;
(1-2) heating the salt solution of the polyamide, raising the pressure in the reaction system to 0.3-2.0Mpa, exhausting, maintaining the pressure, reducing the pressure to reduce the pressure in the reaction system to 0-0.2Mpa in gauge pressure, and vacuumizing to-0.08-0.01 Mpa in vacuum degree to obtain the polyamide melt.
When the production raw material for polyamide fibers further comprises a comonomer, the comonomer is added in step (1-1).
When the raw material for producing polyamide fibers further comprises an additive, the additive is added in step (1-1).
Wherein the temperature of the reaction system at the end of the pressure maintaining is 232-265 ℃.
The temperature of the reaction system after the pressure reduction is finished is 245-280 ℃.
The temperature after vacuum pumping is 260 ℃ to 280 ℃.
In step (2), the spinneret draw ratio is 80-200, preferably 100-150, more preferably 110-130.
In the step (3), the cooling is carried out by blowing, and the wind speed can be 0.2-0.8m/s, and can be preferably 0.5-0.8 m/s; the air temperature may be 15 to 28 ℃, preferably 12 to 26 ℃, and more preferably 15 to 25 ℃. The blow cooling can adopt different blow cooling modes, and preferably adopts side blow cooling or circular blow cooling.
The polyamide fiber tow may be any one selected from a polyamide Fully Drawn Yarn (FDY), a polyamide pre-oriented yarn (POY), a polyamide Middle Oriented Yarn (MOY), a polyamide Highly Oriented Yarn (HOY), a polyamide Fully Oriented Yarn (FOY), a polyamide undrawn yarn (UDY), and a polyamide Air Textured Yarn (ATY).
The properties of the above polyamide fiber tow are as follows:
(1) fineness:
the titer of the polyamide fiber tow is 10 to 3000dtex, preferably 10 to 2500dtex, more preferably 10 to 2000dtex, more preferably 20 to 1000dtex, and still more preferably 20 to 500 dtex.
(2) And breaking strength:
the breaking strength of the polyamide fiber tow may be 2 to 6cN/dtex, and may preferably be 2 to 5cN/dtex, and may more preferably be 2 to 4cN/dtex, and may further preferably be 2 to 3 cN/dtex.
The breaking strength was measured according to GB/T14344-.
(3) Elongation at break:
the elongation at break of the polyamide fiber tow is 20 to 200%, preferably 30 to 180%, more preferably 40 to 100%, and still more preferably 40 to 60%.
Elongation at break was determined according to GB/T14344-.
(4) Initial modulus:
the initial modulus of the polyamide fiber tow may be 20 to 60cN/dtex, may preferably be 25 to 45cN/dtex, may more preferably be 28 to 43cN/dtex, and may even more preferably be 30 to 42 cN/dtex.
The initial modulus is defined as the strength at break corresponding to an elongation at break of 1%.
The winding process comprises the following steps: and (3) enabling the polyamide fiber tows to pass through a spinning channel, then enabling the polyamide fiber tows to enter a winding roller under the driving of a godet roller or a hot roller, and winding the polyamide fiber tows by the winding roller to form a polyamide fiber roll.
The length of the spinning duct may be 3 to 12m, preferably 5 to 10m, and more preferably 6 to 8 m.
The winding speed of the winding roller can be 500-8000m/min, preferably 800-7000m/min, more preferably 1000-6000m/min, and even more preferably 1500-5000 m/min. Therefore, the method of the present invention is applicable to both high-speed winding (more than 4000m/min) and low-speed winding (4000 m/min or less).
The winding roller is subjected to an ambient temperature of 18-25 c, and may preferably be 20-23 c.
The ambient humidity to which the winding roller is exposed may be 60-80%, and may preferably be 65-75%.
< Package of Polyamide fiber >
A polyamide fiber package is made of a polyamide fiber tow by the production method of the polyamide fiber package. The respective parameters of the polyamide fiber tow are as described above. The full package percentage of the polyamide fiber package prepared by the polyamide fiber tows with the parameters is 99-100%.
The full-roll rate is calculated as follows: the weight of the fiber wound on the paper tube is defined as 10 kg for full wrap, i.e. 100%, and the actual full wrap rate is the proportion of the length of the fiber at break to the total length of 10 kg of finished product wound.
The present invention will be further described with reference to examples and comparative examples. Wherein, PA66 is Yinwida slice.
The first embodiment is as follows: (UDY)
This example provides a method for producing a polyamide fiber package, which specifically includes the following steps:
(1) drying the polyamide resin chips (polyamide 510), heating the polyamide resin chips to a molten state in a single-screw extruder, and spraying the polyamide resin chips through a spinneret (the drawing ratio of the spinneret is 80) of a spinneret plate to obtain primary yarns;
(2) cooling and oiling the as-spun yarns by adopting cross-blown air (the air temperature is 28 ℃) to form polyamide fiber tows;
(3) and enabling the polyamide fiber tows to enter a winding roller through a spinning channel (with the length of 12m) under the driving of two godet rollers (a lower godet roller and an upper godet roller), and winding the polyamide fiber tows by the winding roller, wherein the ambient temperature is 18 ℃, the ambient humidity is 60%, the winding speed of the winding roller is 1000m/min, and finally forming a polyamide fiber package, and the full-winding rate of the polyamide fiber package is 100%.
Wherein, in the step (3), the polyamide fiber tows firstly pass through the lower godet roller and then pass through the upper godet roller.
Example two: (POY)
This example provides a method for producing a polyamide fiber package, which specifically includes the following steps:
(1) drying the polyamide resin chips (polyamide 511), heating the dried polyamide resin chips to a molten state in a single-screw extruder, and spraying the polyamide resin chips through a spinneret (the drawing ratio of the spinneret is 200) of a spinneret plate to obtain primary yarns;
(2) cooling and oiling the as-spun yarns by adopting cross-blown air (the air temperature is 15 ℃) to form polyamide fiber tows;
(3) and enabling the polyamide fiber tows to enter a winding roller under the driving of two godet rollers (a lower godet roller and an upper godet roller) through a spinning channel (the length is 8m), and winding the polyamide fiber tows by the winding roller, wherein the environmental temperature is 25 ℃, the environmental humidity is 80%, the winding speed of the winding roller is 4300m/min, and finally forming a polyamide fiber package, and the full-winding rate of the polyamide fiber package is 100%.
Wherein, in the step (3), the polyamide fiber tows firstly pass through the lower godet roller and then pass through the upper godet roller.
Example three: (FDY)
This example provides a method for producing a polyamide fiber package, which specifically includes the following steps:
(1) drying the polyamide resin chips (polyamide 513), heating the polyamide resin chips to a molten state in a single-screw extruder, and spraying the polyamide resin chips through a spinneret (the drawing ratio of the spinneret is 120) of a spinneret plate to obtain primary yarns;
(2) cooling the nascent fiber by adopting circular blowing (the air temperature is 20 ℃) to form a polyamide fiber tow;
(3) and enabling the polyamide fiber tows to enter a winding chamber through a spinning channel (the length is 10m), winding for 8 circles through a first pair of hot rollers, then winding for 6 circles through a second pair of hot rollers, wherein the drafting multiple is 3.5 times, the ambient temperature during winding is 20 ℃, the ambient humidity is 70%, the winding speed of a winding roller is 4500m/min, and finally forming a polyamide fiber package, and the full-winding rate of the polyamide fiber package is 100%.
Example four: (HOY)
This example provides a method for producing a polyamide fiber package, which specifically includes the following steps:
(1) drying the polyamide resin chips (polyamide 512), heating the polyamide resin chips to a molten state in a single-screw extruder, and spraying the polyamide resin chips through a spinneret (the drawing ratio of the spinneret is 120) of a spinneret plate to obtain primary yarns;
(2) cooling and oiling the as-spun yarns by adopting cross-blown air (the air temperature is 20 ℃) to form polyamide fiber tows;
(3) and enabling the polyamide fiber tows to enter a winding roller through a spinning channel (with the length of 11m) under the driving of two godet rollers (a lower godet roller and an upper godet roller), and winding the polyamide fiber tows by the winding roller, wherein the ambient temperature and the ambient humidity are 20 ℃ and 65 percent respectively, the winding speed of the winding roller is 6000m/min, and finally forming a polyamide fiber package, and the full-winding rate of the polyamide fiber package is 99 percent.
Wherein, in the step (3), the polyamide fiber tows firstly pass through the lower godet roller and then pass through the upper godet roller.
Example five: (FOY)
This example provides a method for producing a polyamide fiber package, which specifically includes the following steps:
(1) drying the polyamide resin chips (polyamide 516), heating the polyamide resin chips to a molten state in a single-screw extruder, and spraying the polyamide resin chips through a spinneret (the drawing ratio of the spinneret is 120) of a spinneret plate to obtain primary yarns;
(2) cooling and oiling the as-spun yarns by adopting circular blowing (the air temperature is 20 ℃) to form polyamide fiber tows;
(3) and enabling the polyamide fiber tows to enter a winding roller through a spinning channel (the length is 10m) under the driving of two godet rollers (a lower godet roller and an upper godet roller), and winding the polyamide fiber tows by the winding roller, wherein the ambient temperature is 20 ℃, the ambient humidity is 75%, the winding speed of the winding roller is 7300m/min, finally forming a polyamide fiber package, and the full-winding rate of the polyamide fiber package is 99%.
Wherein, in the step (3), the polyamide fiber tows firstly pass through the lower godet roller and then pass through the upper godet roller.
Example six: (UDY)
This example provides a method for producing a polyamide fiber package, which specifically includes the following steps:
(1) drying the polyamide resin chips (polyamide 518), heating the dried polyamide resin chips to a molten state in a single-screw extruder, and spraying the polyamide resin chips through a spinneret (the drawing ratio of the spinneret is 100) of a spinneret plate to obtain primary yarns;
(2) cooling and oiling the as-spun yarns by adopting cross-blown air (the air temperature is 23 ℃) to form polyamide fiber tows;
(3) and enabling the polyamide fiber tows to enter a winding roller through a spinning channel (with the length of 8m) under the driving of two godet rollers (a lower godet roller and an upper godet roller), and winding the polyamide fiber tows by the winding roller, wherein the ambient temperature and the ambient humidity are 20 ℃ and 75% respectively, the winding speed of the winding roller is 1000m/min, and finally forming a polyamide fiber package, and the full-winding rate of the polyamide fiber package is 100%.
Wherein, in the step (3), the polyamide fiber tows firstly pass through the lower godet roller and then pass through the upper godet roller.
Example seven: (MOY)
This example provides a method for producing a polyamide fiber package, which specifically includes the following steps:
(1) drying the polyamide resin chips (polyamide 516), heating the polyamide resin chips to a molten state in a single-screw extruder, and spraying the polyamide resin chips through a spinneret (the drawing ratio of the spinneret is 120) of a spinneret plate to obtain primary yarns;
(2) cooling and oiling the as-spun yarns by adopting cross-blown air (the air temperature is 23 ℃) to form polyamide fiber tows;
(3) and enabling the polyamide fiber tows to enter a winding roller through a spinning channel (the length is 10m) under the driving of two godet rollers (a lower godet roller and an upper godet roller), and winding the polyamide fiber tows by the winding roller, wherein the ambient temperature is 20 ℃, the ambient humidity is 75%, the winding speed of the winding roller is 5500m/min, and finally forming a polyamide fiber package, and the full-winding rate of the polyamide fiber package is 100%.
Wherein, in the step (3), the polyamide fiber tows firstly pass through the lower godet roller and then pass through the upper godet roller.
Example eight: (POY)
This example provides a method for producing a polyamide fiber package, which specifically includes the following steps:
(1) drying the polyamide resin chips (polyamide 612), heating the polyamide resin chips to a molten state in a single-screw extruder, and spraying the polyamide resin chips through a spinneret (the drawing ratio of the spinneret is 100) of a spinneret plate to obtain primary yarns;
(2) cooling and oiling the as-spun yarns by adopting cross-blown air (the air temperature is 23 ℃) to form polyamide fiber tows;
(3) and enabling the polyamide fiber tows to enter a winding roller under the driving of two godet rollers (a lower godet roller and an upper godet roller) through a spinning channel (the length is 10m), and winding the polyamide fiber tows by the winding roller, wherein the environmental temperature is 20 ℃, the environmental humidity is 75%, the winding speed of the winding roller is 4300m/min, finally forming a polyamide fiber package, and the full-winding rate of the polyamide fiber package is 99%.
Wherein, in the step (3), the polyamide fiber tows firstly pass through the lower godet roller and then pass through the upper godet roller.
Comparative example one: (POY)
This comparative example provides a method of producing a polyamide fiber package, comprising the steps of:
(1) drying the polyamide resin chips (polyamide 510), heating the polyamide resin chips to a molten state in a single-screw extruder, and spraying the polyamide resin chips through a spinneret (the drawing ratio of the spinneret is 100) of a spinneret plate to obtain primary yarns;
(2) cooling and oiling the as-spun yarns by adopting cross-blown air (the air temperature is 23 ℃) to form polyamide fiber tows;
(3) and enabling the polyamide fiber tows to enter a winding roller through a spinning channel (with the length of 10m) under the driving of two godet rollers (a lower godet roller and an upper godet roller), and winding the polyamide fiber tows by the winding roller, wherein the ambient temperature and the ambient humidity are 30 ℃ and 55% respectively, the winding speed of the winding roller is 4200m/min, and finally forming a polyamide fiber package, and the full-package rate of the polyamide fiber package is 10%.
Wherein, in the step (3), the polyamide fiber tows firstly pass through the lower godet roller and then pass through the upper godet roller.
Comparative example two: (FDY)
This comparative example provides a method of producing a polyamide fiber package, comprising the steps of:
(1) drying the polyamide resin chips (polyamide 514), heating the polyamide resin chips to a molten state in a single-screw extruder, and spraying the polyamide resin chips through a spinneret (the drawing ratio of the spinneret is 100) of a spinneret plate to obtain primary yarns;
(2) cooling the as-spun yarn by adopting cross-blown air (the air temperature is 30 ℃) to form a polyamide fiber tow;
(3) and enabling the polyamide fiber tows to enter a winding chamber through a spinning channel (the length is 10m), winding for 8 circles through a first pair of heating rollers, then winding for 6 circles through a second pair of heating rollers, wherein the drafting multiple is 3.5 times, the ambient temperature during winding is 20 ℃, the ambient humidity is 50%, the winding speed of a winding roller is 4500m/min, and finally forming a polyamide fiber package, and the full-winding rate of the polyamide fiber package is 15%.
Comparative example three: (POY)
This comparative example provides a method of producing a polyamide fiber package, comprising the steps of:
(1) drying the polyamide resin chips (polyamide 66), heating the dried polyamide resin chips to a molten state in a single-screw extruder, and spraying the polyamide resin chips through a spinneret (the drawing ratio of the spinneret is 80) of a spinneret plate to obtain primary yarns;
(2) cooling and oiling the as-spun yarns by adopting cross-blown air (the air temperature is 28 ℃) to form polyamide fiber tows;
(3) and enabling the polyamide fiber tows to enter a winding roller through a spinning channel (with the length of 2m) under the driving of two godet rollers (a lower godet roller and an upper godet roller), and winding the polyamide fiber tows by the winding roller, wherein the ambient temperature is 18 ℃, the ambient humidity is 60%, the winding speed of the winding roller is 1000m/min, and finally forming a polyamide fiber package, and the full-winding rate of the polyamide fiber package is 20%.
Wherein, in the step (3), the polyamide fiber tows firstly pass through the lower godet roller and then pass through the upper godet roller.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims (42)

1. A method of producing a package of polyamide fibers, characterized by: which comprises the following steps: winding a polyamide fiber tow to obtain the polyamide fiber package; the ambient temperature of the winding roller during winding is 18-25 ℃; the environment humidity of the winding roller is 60-80%; enabling the polyamide fiber tows to pass through a spinning channel and then enter a winding roller under the driving of a godet roller or a hot roller, and winding the polyamide fiber tows by the winding roller to form a polyamide fiber package; the length of the spinning channel is 3-12 m;
the production method of the polyamide fiber tows comprises the following steps: spinning the polyamide to obtain a polyamide fiber tow; the spinning method comprises the following steps: slice spinning or melt direct spinning; the production method of the polyamide fiber tows comprises the following steps: (1) polymerizing diamine and diacid to form a polyamide melt; or heating polyamide resin to a molten state to form a polyamide melt, wherein the polyamide is polyamide 510, polyamide 511, polyamide 512, polyamide 513, polyamide 516, polyamide 518 or polyamide 612; (2) spraying the polyamide melt through a spinneret of a spinneret plate to obtain primary yarns; (3) cooling and oiling the primary raw silk to form a polyamide fiber tow;
in the step (2), the drawing ratio of the spinneret is 80-200;
in the step (3), the cooling is carried out by cross air blow; the wind speed of the cross air blow is 0.2-0.8 m/s; the air temperature of the cross air blow is 15-28 ℃.
2. The production method according to claim 1, characterized in that:
in the step (1), comonomer and/or additive are also added; the addition mole number of the comonomer is 0-20% of the total addition mole number of the dicarboxylic acid and the diamine; and/or the additive is added in an amount of 0.001-10% of the total weight of the raw materials;
in the step (1), the relative viscosity of the polyamide resin is 1.5 to 4.0.
3. The production method according to claim 1, characterized in that: the ambient temperature at which the winding roller is located is 20-23 ℃.
4. The production method according to claim 1, characterized in that: the winding roller is located at an ambient humidity of 65-75%.
5. The production method according to claim 1, characterized in that: the length of the spinning channel is 5-10 m.
6. The production method according to claim 1, characterized in that: the length of the spinning channel is 6-8 m.
7. The production method according to claim 1, characterized in that: the winding speed of the winding roller is 500-8000 m/min.
8. The production method according to claim 1, characterized in that: the winding speed of the winding roller is 800-7000 m/min.
9. The production method according to claim 1, characterized in that: the winding speed of the winding roller is 1000-6000 m/min.
10. The production method according to claim 1, characterized in that: the winding speed of the winding roller is 1500-5000 m/min.
11. The production method according to claim 1, characterized in that: in the step (1), comonomer and/or additive are also added; the addition mole number of the comonomer is 0-15% of the total addition mole number of the dicarboxylic acid and the diamine.
12. The production method according to claim 1, characterized in that: in the step (1), comonomer and/or additive are also added; the addition mole number of the comonomer is 0-10% of the total addition mole number of the dicarboxylic acid and the diamine.
13. The production method according to claim 1, characterized in that: in the step (1), comonomer and/or additive are also added; the addition mole number of the comonomer is 0-5% of the total addition mole number of the dicarboxylic acid and the diamine.
14. The production method according to claim 1, characterized in that: in the step (1), comonomer and/or additive are also added; the additive amount is 0.005-8% of the total weight of the raw materials.
15. The production method according to claim 1, characterized in that: in the step (1), comonomer and/or additive are also added; the additive amount is 0.01-5% of the total weight of the raw materials.
16. The production method according to claim 1, characterized in that: in the step (1), comonomer and/or additive are also added; the additive amount is 0.05-2.5% of the total weight of the raw materials.
17. The production method according to claim 1, characterized in that: in the step (1), comonomer and/or additive are also added; the additive amount is 0.1-2.0% of the total weight of the raw materials.
18. The production method according to claim 1, characterized in that: in the step (1), the relative viscosity of the polyamide resin is 2.4 to 3.8.
19. The production method according to claim 1, characterized in that: in the step (1), the relative viscosity of the polyamide resin is 2.5 to 3.5.
20. The production method according to claim 1, characterized in that: in the step (1), the polymerization comprises the following steps: (1-1) under the condition of nitrogen, uniformly mixing 1, 5-pentanediamine, dibasic acid and water to prepare a salt solution of polyamide; wherein the molar ratio of the 1, 5-pentanediamine to the dibasic acid is (1-1.05): 1; (1-2) heating the salt solution of the polyamide, raising the pressure in the reaction system to 0.3-2.0Mpa, exhausting, maintaining the pressure, reducing the pressure to reduce the pressure in the reaction system to 0-0.2Mpa in gauge pressure, and vacuumizing to-0.08-0.01 Mpa in vacuum degree to obtain the polyamide melt.
21. The production method according to claim 20, characterized in that: in the step (1-2), the temperature of the reaction system at the end of the pressure maintaining is 232-265 ℃.
22. The production method according to claim 20, characterized in that: in the step (1-2), the temperature of the reaction system after the pressure reduction is finished is 245-280 ℃.
23. The production method according to claim 20, characterized in that: in the step (1-2), the temperature after the vacuum pumping is 260 ℃ to 280 ℃.
24. The production method according to claim 1, characterized in that: in the step (2), the spinning comprises the following steps:
in the step (2), the drawing ratio of the spinneret is 100-150.
25. The production method according to claim 1, characterized in that: in the step (2), the spinning comprises the following steps:
in the step (2), the drawing ratio of the spinneret is 110-.
26. The production method according to claim 1, characterized in that: in the step (3), the cooling is carried out by cross air blow; the wind speed of the cross air blow is 0.5-0.8 m/s.
27. The production method according to claim 26, characterized in that: the air temperature of the cross air blow is 12-26 ℃.
28. The production method according to claim 27, characterized in that: the air temperature of the cross air blow is 15-25 ℃.
29. The production method according to claim 1, characterized in that: the polyamide fiber tow is selected from any one of polyamide fully drawn yarns, polyamide pre-oriented yarns, polyamide middle oriented yarns, polyamide high oriented yarns, polyamide fully oriented yarns, polyamide undrawn yarns or polyamide air textured yarns; and/or the titer of the polyamide fiber tows is 10-3000 dtex; and/or the breaking strength of the polyamide fiber tows is 2-6 cN/dtex; and/or the elongation at break of the polyamide fiber tow is 20-200%; and/or the initial modulus of the polyamide fiber tows is 20-60 cN/dtex.
30. The production method according to claim 1, characterized in that: the titer of the polyamide fiber tows is 10-2500 dtex.
31. The production method according to claim 1, characterized in that: the titer of the polyamide fiber tows is 10-2000 dtex.
32. The production method according to claim 1, characterized in that: the titer of the polyamide fiber tows is 20-1000 dtex.
33. The production method according to claim 1, characterized in that: the titer of the polyamide fiber tows is 20-500 dtex.
34. The production method according to claim 1, characterized in that: the breaking strength of the polyamide fiber tows is 2-5 cN/dtex.
35. The production method according to claim 1, characterized in that: the breaking strength of the polyamide fiber tows is 2-4 cN/dtex.
36. The production method according to claim 1, characterized in that: the breaking strength of the polyamide fiber tows is 2-3 cN/dtex.
37. The production method according to claim 1, characterized in that: the elongation at break of the polyamide fiber tows is 30-180%.
38. The production method according to claim 1, characterized in that: the elongation at break of the polyamide fiber tows is 40-100%.
39. The production method according to claim 1, characterized in that: the elongation at break of the polyamide fiber tows is 40-60%.
40. The production method according to claim 1, characterized in that: the initial modulus of the polyamide fiber tows is 25-45 cN/dtex.
41. The production method according to claim 1, characterized in that: the initial modulus of the polyamide fiber tows is 28-43 cN/dtex.
42. The production method according to claim 1, characterized in that: the initial modulus of the polyamide fiber tows is 30-42 cN/dtex.
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