CN111286801A - Preparation process of smooth high-moisture-absorption polyamide fiber - Google Patents

Preparation process of smooth high-moisture-absorption polyamide fiber Download PDF

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CN111286801A
CN111286801A CN202010221560.5A CN202010221560A CN111286801A CN 111286801 A CN111286801 A CN 111286801A CN 202010221560 A CN202010221560 A CN 202010221560A CN 111286801 A CN111286801 A CN 111286801A
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oil
oiling
moisture
preparation process
parts
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朱爱民
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Nantong Suyuan Chemical Fiber Co ltd
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Nantong Suyuan Chemical Fiber Co ltd
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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
    • D01F6/88—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
    • 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
    • D01D1/04—Melting filament-forming substances
    • 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
    • D01D13/00—Complete machines for producing artificial threads
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Artificial Filaments (AREA)

Abstract

The invention discloses a preparation process of smooth high-moisture-absorption polyamide fiber, which can prepare modified master batches with excellent moisture-absorption and air-permeability functions and weak magnetism by starting from raw materials and taking modified activated carbon fiber as a carrier, can absorb water in polyamide 6 slices, reduce the water content and the influence in the fiber spinning process, improve the spinning quality and prevent yarn breakage, and creatively introduces a dynamic oil feeding component in an oiling system, utilizes the weak magnetism of the fiber to adsorb a magnetic oiling agent, actively absorbs the oiling agent for oiling, so that the oiling is very uniform, the yarn breakage caused by friction can be avoided due to the absence of direct physical contact, meanwhile, the amount of the oiling agent absorbed due to the magnetic relation is relatively constant, the oiling effect is stable and is not easy to fall off, and the waste of the oiling agent can be reduced, the oiling cost is reduced, and the moisture absorption and smoothness of the nylon fiber are comprehensively improved.

Description

Preparation process of smooth high-moisture-absorption polyamide fiber
Technical Field
The invention relates to the technical field of chemical fiber preparation, in particular to a preparation process of smooth high-moisture-absorption polyamide fiber.
Background
Polyamide, which is a polyamide fiber and is called nylon abroad, is the first fiber for realizing industrialization in the world, and industrial production is started in 1938. The nylon fiber has the advantages of high strength, excellent wear resistance and the like, is widely applied to the fields of textiles for clothes, industrial textiles and the like, has the excellent dressing property which is widely accepted by consumers, and has the characteristics of high strength, high elasticity, good dyeing performance and the like.
Along with the improvement of living standard, the increase of leisure time, people have proposed higher requirement to the quality of dress surface fabric, and fashion, healthy, comfortable leisure's dress is more and more favored by consumer, and dress surface fabric forward high-grade, diversified, the functional orientation develops. As one of four synthetic fibers, the nylon-6 fiber is widely applied to the fields of textile clothing and other non-woven fabrics due to excellent physical and chemical properties, most of the fabrics seek moisture absorption, air permeability and high smoothness, the current common nylon fiber has difficulty in meeting the increasing requirements of consumers due to moisture absorption and air permeability, and the nylon fiber is easy to generate fuzz phenomenon to influence touch and appearance due to the problems of raw material moisture, oil adding and the like, so that the nylon fiber has certain influence on the quality of the fabrics.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a preparation process of a smooth high-moisture-absorption nylon fiber, which can prepare a modified master batch with excellent moisture-absorption and air-permeability functions and weak magnetism by starting from raw materials and taking the modified activated carbon fiber as a carrier, can absorb water in a nylon 6 cut piece, reduce the water content and the influence in the fiber spinning process, improve the spinning quality and prevent the yarn breakage phenomenon from occurring easily, and create a novel dynamic oil feeding assembly in an oiling system, actively absorb an oiling agent to oil by utilizing the adsorption effect of the weak magnetism of the fiber on the magnetic oiling agent, so that the oiling is very uniform, the hair yarn generated by friction can be avoided due to the absence of direct physical contact, meanwhile, the oiling effect is stable and is not easy to fall off due to the constant oiling agent amount absorbed by the magnetic relation, the waste of oiling agent can be reduced, the oiling cost is reduced, and the moisture absorption and smoothness of the polyamide fiber are comprehensively improved.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A preparation process of smooth high-moisture-absorption polyamide fiber comprises the following steps:
s1, uniformly mixing 15-25 parts of activated carbon fiber, 15-20 parts of high molecular water-absorbing resin, 5-10 parts of fluff pulp, 8-12 parts of magnetic nanoparticles, 0.2-0.5 part of dispersing agent, 0.5-1 part of antioxidant and 5-20 parts of deionized water to obtain a modifier;
s2, mixing the modifier and the chinlon 6 slices in a polymerization kettle for reaction to obtain a polymer melt, and filtering, granulating, extracting and drying the polymer melt to obtain modified master batches;
s3, blending the modified master batch and the nylon 6 slices in a mass ratio of 1:6-10, heating and melting in a screw extruder, and extruding from a spinning nozzle of a spinning box to form nylon filaments;
s4, oiling the nylon filaments through an oiling system, absorbing magnetic oiling agents by a dynamic oiling assembly in the oiling system independently of the nylon filaments, uniformly distributing the magnetic oiling agents, then enabling the nylon filaments to enter a winding room, reversing and splitting the nylon filaments through a splitting roller, and then drafting and heat setting the nylon filaments;
and S5, carrying out balanced drawing on the shaped nylon fiber, and finally, uniformly and regularly winding the filament into a package with a certain shape and volume through winding operation to form a packaged finished product.
Further, the activated carbon fiber in the step S1 is modified, specifically, in an activation furnace, the heating rate is 3-15 ℃/min, nitrogen is used as carrier gas and protective gas, 5-10mL/min of water vapor is used at the temperature of 750 plus 850 ℃, the activated carbon fiber is activated for 1-2h, the temperature is reduced along with the furnace, the activated carbon fiber is taken out after cooling, the activated carbon fiber is washed by deionized water, then the activated carbon fiber is vacuumized and dried for 2-10h at the temperature of 80-150 ℃, the activated carbon fiber is cooled for standby, the pores of the activated carbon fiber are enlarged, the activated carbon fiber is convenient for loading materials, and the moisture absorption and ventilation effects are more remarkable.
Further, the magnetic nanoparticles in step S1 are nano ferroferric oxide with a particle size of 50-200nm, and the dispersant is one of sodium metaphosphate, potassium metaphosphate, and sodium hyposulfite.
Further, the polymerization reaction conditions in the step S2 are 240 ℃ and 260 ℃ and the reaction is carried out for 3-6h under the pressure of 1-3 bar.
Further, the screw temperature of the screw extruder in the step S3 is 240-270 ℃, the temperature of the spinning beam is 240-270 ℃, the temperature of the cross air is 16-25 ℃, and the air speed of the cross air is 0.45-0.65 m/S.
Further, the spinning speed in the step S3 is 1500-1850m/min, the draft multiple in the step S7 is 5 times, and the draft speed is 650-700 m/min.
Further, the dynamic oil feeding assembly comprises an oil feeding box, the oil feeding box is provided with a wire feeding channel along the horizontal direction, an oil cavity located on the upper side of the wire feeding channel is further formed in the oil feeding box, an oil inlet communicated with the oil cavity is installed at the upper end of the oil feeding box, a plurality of uniformly distributed oil guide hemispheres are fixedly connected to the top wall of the wire feeding channel, a plurality of uniformly distributed oil supplementing channels are formed in the bottom wall of the oil cavity, oil guide side grooves corresponding to the oil supplementing channels are formed in the left end and the right end of each oil guide hemisphere, a cylindrical oil feeding head is fixedly connected to the lower end of each oil guide hemisphere, magnetic oil can be actively adsorbed by fibers to transfer from the cylindrical oil feeding head which is temporarily stopped, direct physical contact does not exist, and the phenomenon of broken wires caused by friction is avoided.
Further, lead the interior fixedly connected with assorted copper wire that is detained of oil limit inslot, the cylindricality is sent oily head lower extreme fixedly connected with arc to be detained the piece, lead oily hemisphere and cylindricality and send oily head surface all to coat and have the nanometer oleophylic coating, detain copper wire and arc and detain the piece and all play the effect of detaining the magnetic oil agent, avoid directly droing under the action of gravity, cause the waste of oil agent when the effect that oils is influenced.
Further, the quantity of arc is detained the piece is no less than three, and the arc in the middle of is detained the piece diameter and is maxmizing to both sides distribution gradually, the distribution characteristic of arc is detained the piece can satisfy the fibre and remove the error of in-process, can detain more magnetic finish simultaneously, avoid being greater than the speed of oiling and lead to the finish excessive and extravagant or the inhomogeneous that oils because of the speed of mending oil, the structural feature of arc is detained the piece and is playing the magnetic finish of detaining, the tip's characteristics also make things convenient for fibre from the top to absorb down the finish under its arc.
Further, the magnetic oil agent in the step S4 includes the following components in parts by weight: 40-50 parts of smoothing agent, 5-10 parts of antistatic agent, 15-25 parts of magnetic nanoparticles and 0.2-0.5 part of dispersing agent.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
the proposal can realize that the modified master batch with excellent moisture absorption and ventilation functions and weak magnetism is prepared by starting from raw materials and taking the modified activated carbon fiber as a carrier, meanwhile, the water in the chinlon-6 chips can be absorbed, the water content and the influence in the fiber spinning process are reduced, the spinning quality is improved, the yarn breakage phenomenon is not easy to occur, and a dynamic oil feeding component is innovatively introduced into the oiling system, the adsorption effect of the weak magnetism of the fiber on the magnetic oiling agent is utilized to actively absorb the oiling agent for oiling, the oiling is very uniform, and because no direct physical contact exists, broken filaments generated by friction can be avoided, meanwhile, the amount of the oiling agent absorbed in a magnetic relation is constant, the oiling effect is stable and not easy to fall off, the waste of the oiling agent can be reduced, the oiling cost is reduced, and the moisture absorption and smoothness of the polyamide fiber are comprehensively improved.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a schematic structural view of a dynamic oil feed assembly of the present invention;
FIG. 3 is a schematic view of the structure at A in FIG. 2;
FIG. 4 is a schematic view of the structure of an arcuate retention sheet of the present invention.
The reference numbers in the figures illustrate:
the oil feeding device comprises an oil feeding box 1, a wire feeding channel 2, an oil inlet 3, an oil cavity 4, an oil guide hemisphere 5, an oil supplementing channel 6, an oil guide edge groove 7, a retained copper wire 8, a cylindrical oil feeding head 9 and an arc-shaped retained sheet 10.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1, a process for preparing a smooth high moisture absorption nylon fiber comprises the following steps:
s1, uniformly mixing 15 parts of activated carbon fiber, 15 parts of high-molecular water-absorbent resin, 5 parts of fluff pulp, 8 parts of magnetic nanoparticles, 0.2 part of dispersing agent, 0.5 part of antioxidant and 5 parts of deionized water to obtain a modifier;
s2, mixing the modifier and the chinlon 6 slices in a polymerization kettle for reaction to obtain a polymer melt, and filtering, granulating, extracting and drying the polymer melt to obtain modified master batches;
s3, blending the modified master batch and the nylon 6 slices in a mass ratio of 1:6, heating and melting in a screw extruder, and extruding from a spinning nozzle of a spinning box to form nylon filaments;
s4, oiling the nylon filaments through an oiling system, absorbing magnetic oiling agents by a dynamic oiling assembly in the oiling system independently of the nylon filaments, uniformly distributing the magnetic oiling agents, then enabling the nylon filaments to enter a winding room, reversing and splitting the nylon filaments through a splitting roller, and then drafting and heat setting the nylon filaments;
and S5, carrying out balanced drawing on the shaped nylon fiber, and finally, uniformly and regularly winding the filament into a package with a certain shape and volume through winding operation to form a packaged finished product.
The activated carbon fiber in the step S1 is modified, specifically, in an activation furnace, the heating rate is 3 ℃/min, nitrogen is used as carrier gas and protective gas, 5mL/min of water vapor is used at 750 ℃, the activated carbon fiber is activated for 1h, the temperature is reduced along with the furnace, the activated carbon fiber is taken out after cooling, the activated carbon fiber is washed by deionized water, then the activated carbon fiber is vacuumized and dried for 2h at 80 ℃, the cooled activated carbon fiber is reserved, the pores of the activated carbon fiber are enlarged after the activated carbon fiber is subjected to high-temperature steam, the loading material is convenient, and meanwhile, the moisture absorption and ventilation effects are more remarkable.
The magnetic nanoparticles in the step S1 are nano ferroferric oxide with the particle size of 50-200nm, and the dispersing agent is one of sodium metaphosphate, potassium metaphosphate and sodium hyposulfite.
The polymerization reaction in step S2 was carried out at 240 ℃ under a pressure of 1bar for 3 hours.
In step S3, the screw temperature of the screw extruder is 240 ℃, the temperature of the spinning beam is 240 ℃, the temperature of the cross air blow is 16 ℃, and the air speed of the cross air blow is 0.45 m/S.
The spinning speed in step S3 was 1500m/min, the draft magnification in step S7 was 5 times, and the draft speed was 650 m/min.
Referring to fig. 3-4, the dynamic oil supply assembly includes an oil supply box 1, the oil supply box 1 is provided with a thread feeding channel 2 along a horizontal direction, the oil supply box 1 is further provided with an oil placing cavity 4 located above the thread feeding channel 2, an oil inlet 3 communicated with the oil placing cavity 4 is installed at an upper end of the oil supply box 1, a plurality of oil guiding hemispheres 5 uniformly distributed are fixedly connected to a top wall of the thread feeding channel 2, a plurality of pairs of oil replenishing channels 6 uniformly distributed are provided on a bottom wall of the oil placing cavity 4, a space of the oil replenishing channels 6 is very narrow for controlling an oil replenishing speed to avoid an excessive speed, oil guiding side grooves 7 corresponding to the oil replenishing channels 6 are provided at left and right ends of the oil guiding hemispheres 5 for guiding an oil to the cylindrical oil feeding head 9, the lower end of the oil guiding hemispheres 5 is fixedly connected with the cylindrical oil feeding head 9 for retaining magnetic oil agent flowing from the oil guiding side grooves 7 and converging into beads, the magnetic oil agent carried by fibers can be actively adsorbed from the temporary cylindrical oil feeding head 9 for transferring, direct physical contact does not exist, and the phenomenon of broken filaments caused by friction is avoided.
Referring to fig. 3, a retention copper wire 8 is fixedly connected in the oil guiding side groove 7, an arc retention sheet 10 is fixedly connected at the lower end of the cylindrical oil feeding head 9, a nano oleophylic coating is coated on the surfaces of the oil guiding hemisphere 5 and the cylindrical oil feeding head 9, the retention copper wire 8 and the arc retention sheet 10 both play a role of retaining a magnetic oil agent, and the problems that the retention copper wire directly falls off under the action of gravity, the oiling effect is affected, and meanwhile, the waste of the oil agent is caused are solved.
Please refer to fig. 4, the number of the arc-shaped detention pieces 10 is not less than three, and the diameter of the middle arc-shaped detention piece 10 is distributed to both sides at the maximum and gradually decreased, the distribution characteristic of the arc-shaped detention piece 10 can satisfy the error of the fiber in the moving process, and more magnetic oil can be retained at the same time, thereby avoiding the waste of the oil due to the fact that the oil is excessive or the uneven oil is applied because the oil-supplying speed is greater than the oil-supplying speed, the structural characteristic of the arc-shaped detention piece 10 plays the role of retaining the magnetic oil, and the characteristic of the end part under the arc shape.
Generally, even if the oiling phenomenon is uneven, the magnetic oiling agent is promoted to move for the second time on the fiber under the action of the magnetic field of the fiber, and finally the magnetic oiling agent is evenly distributed.
The magnetic oil agent in the step S4 comprises the following components in parts by weight: 40 parts of a smoothing agent, 5 parts of an antistatic agent, 15 parts of magnetic nanoparticles and 0.2 part of a dispersing agent.
Example 2:
referring to fig. 1, a process for preparing a smooth high moisture absorption nylon fiber comprises the following steps:
s1, uniformly mixing 20 parts of activated carbon fiber, 18 parts of high-molecular water-absorbent resin, 8 parts of fluff pulp, 10 parts of magnetic nanoparticles, 0.3 part of dispersing agent, 0.8 part of antioxidant and 12 parts of deionized water to obtain a modifier;
s2, mixing the modifier and the chinlon 6 slices in a polymerization kettle for reaction to obtain a polymer melt, and filtering, granulating, extracting and drying the polymer melt to obtain modified master batches;
s3, blending the modified master batch and the nylon 6 slices in a mass ratio of 1:8, heating and melting in a screw extruder, and extruding from a spinning nozzle of a spinning box to form nylon filaments;
s4, oiling the nylon filaments through an oiling system, absorbing magnetic oiling agents by a dynamic oiling assembly in the oiling system independently of the nylon filaments, uniformly distributing the magnetic oiling agents, then enabling the nylon filaments to enter a winding room, reversing and splitting the nylon filaments through a splitting roller, and then drafting and heat setting the nylon filaments;
and S5, carrying out balanced drawing on the shaped nylon fiber, and finally, uniformly and regularly winding the filament into a package with a certain shape and volume through winding operation to form a packaged finished product.
The activated carbon fiber in the step S1 is modified, specifically, in an activation furnace, the heating rate is 10 ℃/min, nitrogen is used as carrier gas and protective gas, 8mL/min water vapor is used at 800 ℃, the activated carbon fiber is activated for 2h, the activated carbon fiber is cooled along with the furnace, the activated carbon fiber is taken out after cooling, the activated carbon fiber is washed by deionized water, then the activated carbon fiber is vacuumized and dried for 5h at 120 ℃, the cooled activated carbon fiber is reserved, the pores of the activated carbon fiber are enlarged after being cooled, the activated carbon fiber is convenient for loading materials, and meanwhile, the moisture absorption and ventilation effects are more remarkable.
The polymerization conditions in step S2 were 250 ℃ and 2bar pressure for 5 hours.
In step S3, the screw temperature of the screw extruder is 250 ℃, the temperature of the spinning beam is 250 ℃, the temperature of the cross air blow is 20 ℃, and the air speed of the cross air blow is 0.55 m/S.
The spinning speed in step S3 was 1700m/min, the draft magnification in step S7 was 5 times, and the draft speed was 680 m/min.
Further, the magnetic oil agent in the step S4 comprises the following components in parts by weight: 45 parts of a smoothing agent, 8 parts of an antistatic agent, 20 parts of magnetic nanoparticles and 0.4 part of a dispersing agent.
The remainder was in accordance with example 1.
Example 3:
referring to fig. 1, a process for preparing a smooth high moisture absorption nylon fiber comprises the following steps:
s1, uniformly mixing 25 parts of activated carbon fiber, 20 parts of high-molecular water-absorbent resin, 10 parts of fluff pulp, 12 parts of magnetic nanoparticles, 0.5 part of dispersing agent, 1 part of antioxidant and 20 parts of deionized water to obtain a modifier;
s2, mixing the modifier and the chinlon 6 slices in a polymerization kettle for reaction to obtain a polymer melt, and filtering, granulating, extracting and drying the polymer melt to obtain modified master batches;
s3, blending the modified master batch and the nylon 6 slices in a mass ratio of 1:10, heating and melting in a screw extruder, and extruding from a spinning nozzle of a spinning box to form nylon filaments;
s4, oiling the nylon filaments through an oiling system, absorbing magnetic oiling agents by a dynamic oiling assembly in the oiling system independently of the nylon filaments, uniformly distributing the magnetic oiling agents, then enabling the nylon filaments to enter a winding room, reversing and splitting the nylon filaments through a splitting roller, and then drafting and heat setting the nylon filaments;
and S5, carrying out balanced drawing on the shaped nylon fiber, and finally, uniformly and regularly winding the filament into a package with a certain shape and volume through winding operation to form a packaged finished product.
The activated carbon fiber in the step S1 is modified, specifically, in an activation furnace, the heating rate is 15 ℃/min, nitrogen is used as carrier gas and protective gas, 10mL/min of water vapor is used at 850 ℃, the activated carbon fiber is activated for 2h, the activated carbon fiber is cooled along with the furnace, the activated carbon fiber is taken out after cooling, the activated carbon fiber is washed by deionized water, then the activated carbon fiber is vacuumized and dried for 10h at 150 ℃, the cooled activated carbon fiber is reserved, the pores of the activated carbon fiber are enlarged after cooling, the activated carbon fiber is convenient for loading materials, and meanwhile, the moisture absorption and ventilation effects are more remarkable.
The polymerization conditions in step S2 were 260 ℃ and 3bar pressure for 6 h.
In step S3, the screw temperature of the screw extruder is 270 ℃, the temperature of the spinning beam is 270 ℃, the temperature of the cross air is 25 ℃, and the air speed of the cross air is 0.65 m/S.
The spinning speed in step S3 was 1850m/min, the draft magnification in step S7 was 5 times, and the draft speed was 700 m/min.
The magnetic oil agent in the step S4 comprises the following components in parts by weight: 50 parts of a smoothing agent, 10 parts of an antistatic agent, 25 parts of magnetic nanoparticles and 0.5 part of a dispersing agent.
The remainder was in accordance with example 1.
The invention can prepare the modified master batch with excellent moisture absorption and ventilation functions and weak magnetism by starting from raw materials and taking the modified activated carbon fiber as a carrier, meanwhile, the water in the chinlon-6 chips can be absorbed, the water content and the influence in the fiber spinning process are reduced, the spinning quality is improved, the yarn breakage phenomenon is not easy to occur, and a dynamic oil feeding component is innovatively introduced into the oiling system, the adsorption effect of the weak magnetism of the fiber on the magnetic oiling agent is utilized to actively absorb the oiling agent for oiling, the oiling is very uniform, and because no direct physical contact exists, broken filaments generated by friction can be avoided, meanwhile, the amount of the oiling agent absorbed in a magnetic relation is constant, the oiling effect is stable and not easy to fall off, the waste of the oiling agent can be reduced, the oiling cost is reduced, and the moisture absorption and smoothness of the polyamide fiber are comprehensively improved.
The above are merely preferred embodiments of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims (10)

1. A preparation process of smooth high-moisture-absorption polyamide fiber is characterized by comprising the following steps: the method comprises the following steps:
s1, uniformly mixing 15-25 parts of activated carbon fiber, 15-20 parts of high molecular water-absorbing resin, 5-10 parts of fluff pulp, 8-12 parts of magnetic nanoparticles, 0.2-0.5 part of dispersing agent, 0.5-1 part of antioxidant and 5-20 parts of deionized water to obtain a modifier;
s2, mixing the modifier and the chinlon 6 slices in a polymerization kettle for reaction to obtain a polymer melt, and filtering, granulating, extracting and drying the polymer melt to obtain modified master batches;
s3, blending the modified master batch and the nylon 6 slices in a mass ratio of 1:6-10, heating and melting in a screw extruder, and extruding from a spinning nozzle of a spinning box to form nylon filaments;
s4, oiling the nylon filaments through an oiling system, absorbing magnetic oiling agents by a dynamic oiling assembly in the oiling system independently of the nylon filaments, uniformly distributing the magnetic oiling agents, then enabling the nylon filaments to enter a winding room, reversing and splitting the nylon filaments through a splitting roller, and then drafting and heat setting the nylon filaments;
and S5, carrying out balanced drawing on the shaped nylon fiber, and finally, uniformly and regularly winding the filament into a package with a certain shape and volume through winding operation to form a packaged finished product.
2. The preparation process of the smooth high-moisture-absorption polyamide fiber according to claim 1, characterized in that: and (S1) performing modification treatment on the activated carbon fiber, specifically, in an activation furnace, heating at a rate of 3-15 ℃/min, activating for 1-2h by using nitrogen as a carrier gas and a protective gas and using 5-10mL/min of water vapor at the temperature of 750 plus 850 ℃, cooling along with the furnace, taking out after cooling, washing with deionized water, vacuumizing and drying at the temperature of 80-150 ℃ for 2-10h, and cooling for later use.
3. The preparation process of the smooth high-moisture-absorption polyamide fiber according to claim 1, characterized in that: the magnetic nanoparticles in the step S1 are nano ferroferric oxide with the particle size of 50-200nm, and the dispersing agent is one of sodium metaphosphate, potassium metaphosphate and sodium hyposulfite.
4. The preparation process of the smooth high-moisture-absorption polyamide fiber according to claim 1, characterized in that: the polymerization conditions in the step S2 are 240 ℃ and 260 ℃ and the reaction is carried out for 3-6h under the pressure of 1-3 bar.
5. The preparation process of the smooth high-moisture-absorption polyamide fiber according to claim 1, characterized in that: the screw temperature of the screw extruder in the step S3 is 240-270 ℃, the temperature of the spinning beam is 240-270 ℃, the temperature of the cross air is 16-25 ℃, and the air speed of the cross air is 0.45-0.65 m/S.
6. The preparation process of the smooth high-moisture-absorption polyamide fiber according to claim 1, characterized in that: the spinning speed in the step S3 is 1500-1850m/min, the draft multiple in the step S7 is 5 times, and the draft speed is 650-700 m/min.
7. The preparation process of the smooth high-moisture-absorption polyamide fiber according to claim 1, characterized in that: the dynamic oil feeding assembly comprises an oil feeding box (1), wherein a wire feeding channel (2) is formed in the oil feeding box (1) along the horizontal direction, an oil containing cavity (4) located on the upper side of the wire feeding channel (2) is further formed in the oil feeding box (1), an oil inlet (3) communicated with the oil containing cavity (4) is mounted at the upper end of the oil feeding box (1), a plurality of uniformly distributed oil guide hemispheres (5) are fixedly connected to the top wall of the wire feeding channel (2), a plurality of pairs of uniformly distributed oil supplementing channels (6) are formed in the bottom wall of the oil containing cavity (4), oil guide side grooves (7) corresponding to the oil supplementing channels (6) are formed in the left end and the right end of each oil guide hemisphere (5), and a cylindrical oil feeding head (9) is fixedly connected to the lower end of each oil guide hemisphere (5).
8. The preparation process of the smooth high-moisture-absorption polyamide fiber according to claim 7, characterized in that: lead oil limit inslot (7) internal fixation and be connected with assorted copper wire (8) of staying, cylindricality send oil head (9) lower extreme fixedly connected with arc to stay piece (10), it has nanometer oleophylic coating all to coat on oil hemisphere (5) and the cylindricality send oil head (9) surface.
9. The preparation process of the smooth high-moisture-absorption polyamide fiber according to claim 8, characterized in that: the number of the arc detention pieces (10) is not less than three, and the diameter of the middle arc detention piece (10) is gradually reduced to the two sides.
10. The preparation process of the smooth high-moisture-absorption polyamide fiber according to claim 1, characterized in that: the magnetic oil agent in the step S4 comprises the following components in parts by weight: 40-50 parts of smoothing agent, 5-10 parts of antistatic agent, 15-25 parts of magnetic nanoparticles and 0.2-0.5 part of dispersing agent.
CN202010221560.5A 2020-03-26 2020-03-26 Preparation process of smooth high-moisture-absorption polyamide fiber Pending CN111286801A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101747624A (en) * 2009-12-11 2010-06-23 杭州师范大学 Hygroscopic fine denier/superfine denier nylon masterbatch, nylon and preparation method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101747624A (en) * 2009-12-11 2010-06-23 杭州师范大学 Hygroscopic fine denier/superfine denier nylon masterbatch, nylon and preparation method thereof

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Title
娄春华等主编: "《高分子科学导论》", 30 March 2019 *
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Application publication date: 20200616