CN110938889B - Special-shaped chinlon 6 filament and preparation method thereof - Google Patents
Special-shaped chinlon 6 filament and preparation method thereof Download PDFInfo
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- CN110938889B CN110938889B CN201911249560.XA CN201911249560A CN110938889B CN 110938889 B CN110938889 B CN 110938889B CN 201911249560 A CN201911249560 A CN 201911249560A CN 110938889 B CN110938889 B CN 110938889B
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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
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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
- D01D13/00—Complete machines for producing artificial threads
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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
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
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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
- 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
- D01F1/04—Pigments
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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
- 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
- D01F1/06—Dyes
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Abstract
The invention discloses a profiled nylon 6 filament and a preparation method thereof, relating to a chemical fiber technology, wherein the preparation method prepares the profiled nylon 6 filament by improving a spinneret plate structure and matching with a method for coloring the nylon 6 filament by stock solution, the spinneret plate comprises a base plate and at least one spinneret micropore, the spinneret micropore is arranged on the base plate, the cross section of the spinneret micropore is trilobal, the included angle of two adjacent blades is 120 degrees, and the shape and the size of each blade are the same; the blades are in a cross-shaped structure, and the end parts of the cross-shaped structure are arc-shaped. According to the profiled nylon 6 filament and the preparation method thereof, the shape of the spinneret plate is changed, the spinning process of the dope dyed nylon 6 filament is optimized, the specific surface area of the fiber and the cohesion among monofilaments are increased to lock the pigment or dye powder in the dope dyed nylon 6 filament, so that the fiber can show full color, the washing fastness is high, and the filament has the functions of moisture absorption and sweat releasing.
Description
Technical Field
The invention relates to a chemical fiber technology, in particular to a profiled nylon-6 filament and a preparation method thereof.
Background
Due to the excellent physical properties of chinlon, chinlon is widely applied to the clothing industry. In recent years, the research on the nylon-6 filament, particularly the research on the differentiated nylon-6 filament capable of meeting the requirements of people, is rapidly developed.
The section of the conventional nylon 6 filament is circular, and the section of the special-shaped nylon 6 filament is non-circular nylon. The research direction of the profiled nylon 6 filament is to increase the specific surface area of the nylon 6 filament, namely, a groove is introduced into the outer contour of the surface of the nylon 6 filament through the design of a profiled section, so that the capillary effect is enhanced, and the design of different section shapes can improve or enhance the gloss, hand feeling, moisture absorption, stiffness, elasticity and the like of the nylon 6 filament to different degrees. Common special-shaped nylon 6 filaments are triangular, trilobal, cross-shaped, I-shaped and the like.
The dope dyed chinlon 6 filament is produced by firstly coloring the chinlon 6 melt to form colored master batches, and adding the color master batches, so that the coloring process of the subsequent fabric is reduced, the environmental problem caused by dye use is avoided, the dyeing cost is saved, the production cost is reduced on one hand, the environmental pollution is avoided on the other hand, and the implementation of energy conservation, emission reduction and environmental protection policies is facilitated.
Compared with a circular section, the luster and the hygroscopicity of the common special-shaped nylon-6 filament are improved to different degrees, but the moisture absorption and sweat releasing functions and the bulkiness of the nylon-6 filament with a triangular or trilobal section are poor, the luster of the nylon-6 filament with a cross-shaped or I-shaped section is poor, and the color of the dyed nylon-6 filament is not bright enough.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical problems to be solved by the invention are as follows: the modified spinneret plate and the preparation method thereof are used for preparing the profiled nylon-6 filament which has high brightness, full color, high washing fastness and moisture absorption and sweat releasing functions.
In order to solve the technical problems, the invention adopts the technical scheme that: the invention provides a preparation method of special-shaped nylon 6 filament, which comprises the following steps:
step 1, mixing and melting dry nylon 6 slices with relative viscosity of 2.30-2.50 and color master batches to obtain nylon 6 melt;
step 2, extruding the melt of the nylon 6 obtained in the step 1 through spinneret micropores on a spinneret plate to obtain a nylon 6 filament bundle;
step 3, sequentially carrying out monomer suction, side-blowing cooling, cluster oiling, stretching and shaping and network interlacing on the nylon 6 filament bundle obtained in the step 2, and then winding and forming to obtain the special-shaped nylon 6 filament;
the spinneret plate comprises a substrate and at least one spinneret micropore, the spinneret micropore is arranged on the substrate, the cross section of the spinneret micropore is in a trefoil shape, the included angle between every two adjacent blades is 120 degrees, and the shape and the size of each blade are the same; the blades are in a cross-shaped structure, and the end parts of the cross-shaped structure are arc-shaped.
The invention also provides the profiled nylon-6 filament prepared by the preparation method of the profiled nylon-6 filament.
The invention has the beneficial effects that: according to the preparation method of the profiled nylon 6 filament, the spinneret micropores of the spinneret plate are designed, so that the cross section surface of the produced profiled nylon 6 filament is approximately in a regular triangle shape, a complete mirror surface effect is achieved, the maximum light reflection effect is achieved, and a high-brightness visual effect is presented; because the blades are of a cross-shaped structure, the surface of the obtained special-shaped nylon 6 filament is different from a complete triangle, three sides of the cross section of the special-shaped nylon 6 filament are in a curve shape, grooves on the surface of the fiber are enhanced, so that the capillary effect is enhanced, and the obtained special-shaped nylon 6 filament has high moisture absorption and sweat releasing functions;
in the preparation process, the color master batch is added to color the nylon 6 melt, then the colored nylon 6 melt is extruded through the spinneret micropores on the spinneret plate, the specific surface area of the fiber and the cohesion among monofilaments are increased to lock pigment or dye powder in the nylon 6 filament bundle, so that the prepared special-shaped nylon 6 filament presents high brightness, the grooves on the surface of the special-shaped nylon 6 filament enhance the connection tightness among the monofilaments, the fiber has good cohesion and high strength, the problem that broken ends are not easy to generate in the subsequent weaving process is solved, and the special-shaped nylon 6 filament which can present full color and has the functions of moisture absorption and sweat releasing is obtained.
Drawings
FIG. 1 is a schematic cross-sectional view of the spinneret micro-holes of a spinneret according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a cross section of a profiled nylon 6 filament according to an embodiment of the present invention.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The most key concept of the invention is as follows: the profiled nylon-6 filament with the cross section similar to the regular triangle is obtained by improving the shape of a spinneret micropore of a spinneret plate, the light reflection effect and the capillary effect of the fiber are enhanced, the nylon-6 melt is colored to form colored master batches, and the profiled nylon-6 filament is produced by adding the color master batches.
Referring to fig. 1 to 2, the preparation method of the profiled nylon-6 filament provided by the invention comprises the following steps:
step 1, mixing and melting dry nylon 6 slices with relative viscosity of 2.30-2.50 and color master batches to obtain nylon 6 melt;
step 2, extruding the melt of the nylon 6 obtained in the step 1 through spinneret micropores on a spinneret plate to obtain a nylon 6 filament bundle;
step 3, sequentially carrying out monomer suction, side-blowing cooling, cluster oiling, stretching and shaping and network interlacing on the nylon 6 filament bundle obtained in the step 2, and then winding and forming to obtain the special-shaped nylon 6 filament;
the spinneret plate comprises a substrate and at least one spinneret micropore, the spinneret micropore is arranged on the substrate, the cross section of the spinneret micropore is in a trefoil shape, the included angle between every two adjacent blades is 120 degrees, and the shape and the size of each blade are the same; the blades are in a cross-shaped structure, and the end parts of the cross-shaped structure are arc-shaped.
The invention also provides the profiled nylon-6 filament prepared by the preparation method of the profiled nylon-6 filament.
From the above description, the beneficial effects of the present invention are: according to the preparation method of the profiled nylon 6 filament, the spinneret micropores of the spinneret plate are designed, so that the cross section surface of the produced profiled nylon 6 filament is approximately in a regular triangle shape, a complete mirror surface effect is achieved, the maximum light reflection effect is achieved, and a high-brightness visual effect is presented; because the blades are of a cross-shaped structure, the surface of the obtained special-shaped nylon 6 filament is different from a complete triangle, three sides of the cross section of the special-shaped nylon 6 filament are in a curve shape, grooves on the surface of the fiber are enhanced, so that the capillary effect is enhanced, and the obtained special-shaped nylon 6 filament has high moisture absorption and sweat releasing functions;
in the preparation process, the color master batch is added to color the nylon 6 melt, then the color master batch is subjected to spinning micro extrusion on a spinneret plate, the specific surface area of the fiber and the cohesion among monofilaments are increased to lock pigment or dye powder in the nylon 6 filament bundle, so that the prepared special-shaped nylon 6 filament presents high brightness, the grooves on the surface of the special-shaped nylon 6 filament enhance the connection tightness among the monofilaments, the fiber has good cohesion and high strength, the problem that the broken ends are not easy to generate in the subsequent weaving process is solved, and the special-shaped nylon 6 filament which can present full color and has the functions of moisture absorption and sweat releasing is obtained.
Furthermore, the height of the spinneret micropores is 0.56-0.90 mm.
Further, the farthest distance from the center of the cross section of the trilobal spinneret micro-holes to the three blades is 0.20-0.30 mm.
Furthermore, the cross-shaped structure is composed of four mutually perpendicular arms, the width of the four arms is 0.06-0.10mm, the length of the three arms is equal and is 0.06-0.10mm, and the arms of each blade, which are unequal in length, are connected to form a three-blade structure.
Further, the length of the blade is 0.14-0.20 mm.
Further, the preparation method of the profiled nylon 6 filament specifically comprises the following steps:
step 1, mixing, melting, mixing, compressing and extruding nylon 6 dry slices with relative viscosity of 2.30-2.50 and color master batches to obtain a nylon 6 melt;
step 2, extruding the melt of the nylon 6 obtained in the step 1 through the spinneret micropores on the spinneret plate of any one of claims 1 to 6 to obtain a nylon 6 filament bundle;
and 3, sequentially carrying out monomer suction, side-blowing cooling, cluster oiling, stretching and shaping, network interlacing on the nylon 6 filament bundle obtained in the step 2, and then winding and forming to obtain the special-shaped nylon 6 filament.
The description shows that the cross section of the profiled nylon 6 filament is in the approximate regular triangle shape, so that a complete mirror effect can be achieved, a high-brightness visual effect is achieved, and the transparency of the profiled nylon 6 filament can be improved by adopting the large bright dry slices with the relative viscosity of 2.30-2.50 for mixed melt spinning, so that the light reflection effect of the profiled nylon 6 filament is enhanced, and the high-brightness visual effect is achieved; the melting, mixing, compression and extrusion can improve the mixing uniformity of the color master and the dry chinlon 6 slices and improve the coloring effect;
the method comprises the steps of extruding a nylon 6 melt through spinneret micropores on a spinneret plate, then performing monomer suction, side-blown cooling, cluster oiling, stretching and shaping, network interlacing, and then winding and forming, wherein the stretching and shaping processes are introduced in the spinning process, so that the special-shaped nylon 6 filament with high orientation degree and medium crystallinity can be obtained, and the special-shaped nylon 6 filament can be applied to downstream weaving without other post-processing. In the process, the cross-sectional shape of the profiled nylon 6 filament can be kept.
Further, the color master batch is black master batch, fluorescent white master batch or other color master batches.
Example 1:
a preparation method of profiled nylon 6 filament specifically comprises the following steps:
step 1, mixing and melting dry nylon 6 slices with relative viscosity of 2.30-2.50 and black master batch to obtain a black nylon 6 melt;
step 2, extruding the melt of the nylon 6 obtained in the step 1 through spinneret micropores on a spinneret plate to obtain a nylon 6 black filament bundle;
step 3, sequentially carrying out monomer suction, side-blowing cooling, cluster oiling, stretching and shaping and network interlacing on the nylon 6 filament bundle obtained in the step 2, and then winding and forming to obtain the special-shaped black nylon 6 filament;
the spinneret plate comprises a substrate and at least one spinneret micropore, the spinneret micropore is arranged on the substrate, the cross section of the spinneret micropore is in a trefoil shape, the included angle between every two adjacent blades is 120 degrees, and the shape and the size of each blade are the same; the blades are in a cross-shaped structure, the end parts of the cross-shaped structure are arc-shaped, and the cross sections are axially symmetrical;
the farthest distance from the center of the cross section of each trilobal spinneret micropore to the three blades is 0.20mm, the cross-shaped structure is composed of four mutually perpendicular arms, the width of each arm is 0.06mm, the length of each arm is equal to that of each arm, the three arms are connected to form a three-blade structure, the length of each blade is 0.14mm, and the height of each spinneret micropore is 0.56 mm.
The special-shaped black chinlon 6 filament yarn is prepared by the preparation method of the special-shaped chinlon 6 filament yarn.
Example 2:
a preparation method of profiled nylon 6 filament specifically comprises the following steps:
step 1, mixing, melting, mixing, compressing and extruding dry slices of chinlon 6 with relative viscosity of 2.30-2.50 and fluorescent white master batches to obtain a fluorescent white melt of the chinlon 6;
step 2, extruding the melt of the nylon 6 obtained in the step 1 through a spinneret micropore on a spinneret plate to obtain a nylon 6 fluorescent white filament bundle;
step 3, sequentially carrying out monomer suction, side-blowing cooling, cluster oiling, stretching and shaping and network interlacing on the nylon 6 filament bundle obtained in the step 2, and then winding and forming to obtain the special-shaped fluorescent white nylon 6 filament;
the spinneret plate comprises a substrate and at least one spinneret micropore, the spinneret micropore is arranged on the substrate, the cross section of the spinneret micropore is in a trefoil shape, the included angle between every two adjacent blades is 120 degrees, and the shape and the size of each blade are the same; the blades are in a cross-shaped structure, the end parts of the cross-shaped structure are arc-shaped, and the cross sections are axially symmetrical;
the farthest distance from the center of the cross section of each trilobal spinneret micropore to the three blades is 0.30mm, the cross-shaped structure is composed of four mutually perpendicular arms, the width of each arm is 0.10mm, the length of each arm is equal to that of each arm, the length of each arm is 0.10mm, each blade is connected with the arms with unequal lengths to form a trilobal structure, the length of each blade is 0.20mm, and the height of each spinneret micropore is 0.90 mm.
The special-shaped fluorescent white chinlon 6 filament yarn is prepared by the preparation method of the special-shaped chinlon 6 filament yarn.
Example 3:
a preparation method of profiled nylon 6 filament specifically comprises the following steps:
step 1, mixing, melting, mixing, compressing and extruding nylon 6 dry slices with relative viscosity of 2.30-2.50 and black master batch to obtain a nylon 6 black melt;
step 2, extruding the melt of the nylon 6 obtained in the step 1 through spinneret micropores on a spinneret plate to obtain a nylon 6 black filament bundle;
step 3, sequentially carrying out monomer suction, side-blowing cooling, cluster oiling, stretching and shaping and network interlacing on the nylon 6 filament bundle obtained in the step 2, and then winding and forming to obtain the special-shaped black nylon 6 filament;
the spinneret plate comprises a substrate and at least one spinneret micropore, the spinneret micropore is arranged on the substrate, the cross section of the spinneret micropore is in a trefoil shape, the included angle between every two adjacent blades is 120 degrees, and the shape and the size of each blade are the same; the blades are in a cross-shaped structure, the end parts of the cross-shaped structure are arc-shaped, and the cross sections are axially symmetrical;
the farthest distance from the center of the cross section of each trilobal spinneret micropore to the three blades is 0.24mm, the cross-shaped structure is composed of four mutually perpendicular arms, the width of each arm is 0.08mm, the length of each arm is equal to that of each arm, the three arms are connected to form a three-blade structure, the length of each blade is 0.16mm, and the height of each spinneret micropore is 0.80 mm.
The special-shaped black chinlon 6 filament yarn is prepared by the preparation method of the special-shaped chinlon 6 filament yarn.
Example 4:
a preparation method of profiled nylon 6 filament specifically comprises the following steps:
step 1, mixing, melting, mixing, compressing and extruding nylon 6 dry slices with relative viscosity of 2.30-2.50 and black master batch to obtain a nylon 6 black melt;
step 2, extruding the melt of the nylon 6 obtained in the step 1 through spinneret micropores on a spinneret plate to obtain a nylon 6 black filament bundle;
step 3, sequentially carrying out monomer suction, side-blowing cooling, cluster oiling, stretching and shaping and network interlacing on the nylon 6 filament bundle obtained in the step 2, and then winding and forming to obtain the special-shaped black nylon 6 filament;
the spinneret plate comprises a substrate and at least one spinneret micropore, the spinneret micropore is arranged on the substrate, the cross section of the spinneret micropore is in a trefoil shape, the included angle between every two adjacent blades is 120 degrees, and the shape and the size of each blade are the same; the blades are in a cross-shaped structure, the end parts of the cross-shaped structure are arc-shaped, and the cross sections are axially symmetrical;
the farthest distance from the center of the cross section of each trilobal spinneret micropore to the three blades is 0.27mm, the cross-shaped structure is composed of four mutually perpendicular arms, the width of each arm is 0.09mm, the length of each arm is equal to that of each arm, the three arms are connected to form a three-blade structure, the length of each blade is 0.18mm, and the height of each spinneret micropore is 0.80 mm.
The special-shaped black chinlon 6 filament yarn is prepared by the preparation method of the special-shaped chinlon 6 filament yarn.
Example 5:
a preparation method of profiled nylon 6 filament specifically comprises the following steps:
step 1, mixing and melting nylon 6 dry slices with relative viscosity of 2.30 and black master batch, mixing the black master batch after online accurate measurement with nylon 6 bright dry slices, conveying the mixture to a screw extruder through a pipeline for melting, mixing, compressing and extruding, conveying the mixture into a spinning box body through a melt pipeline, wherein the temperature of each zone of a screw is 245 ℃, 250 ℃, 252 ℃, 253 ℃ and 255 ℃;
step 2, the melt is accurately metered by a metering pump, passes through a spinning assembly, is extruded by a spinneret with a special-shaped cross section, and is spun, wherein the structure of the spinneret is shown in embodiment 1, the number of holes is 12F, and a nylon 6 black filament bundle is obtained;
and 3, cooling the nylon 6 filament tows obtained in the step 2 by side blowing, oiling and bundling through an oiling nozzle, stretching and shaping, and winding and forming after network interlacing, wherein the temperature of a hot roller is 160 ℃, and the winding speed is 4800m/min, so that the special-shaped black nylon 6 drawn yarns (40D/12F) are obtained.
The special-shaped black chinlon 6 filament yarn is prepared by the preparation method of the special-shaped chinlon 6 filament yarn.
Example 6:
a preparation method of profiled nylon 6 filament specifically comprises the following steps:
step 1, mixing and melting nylon 6 bright dry slices and black master batch, then spinning, wherein the relative viscosity of the nylon 6 bright dry slices is 2.50, the black master batch is accurately measured on line, then mixed with the nylon 6 bright dry slices, and conveyed to a screw extruder through a pipeline for melting, mixing, compressing and extruding, and conveyed into a spinning box through a melt pipeline, wherein the temperature of each region of the screw is 250 ℃, 255 ℃, 257 ℃, 258 ℃ and 260 ℃, so that a nylon 6 black melt is obtained;
step 2, accurately metering the melt of the nylon 6 obtained in the step 1 by a metering pump, feeding the melt into a spinning assembly, extruding the melt by a spinneret with a special-shaped cross section, and spinning, wherein the structure of the spinneret is shown in example 2, the number of holes is 51F, and the black nylon 6 filament bundle is obtained;
and 3, cooling the nylon 6 filament bundle obtained in the step 2 by side blowing in sequence, oiling and bundling by an oil nozzle, stretching and shaping, network interlacing, and then winding and forming, wherein the temperature of a hot roller is 180 ℃, and the winding speed is 4600m/min, so that the special-shaped black nylon 6 drawn yarn (70D/51F) is obtained.
The special-shaped black chinlon 6 filament yarn is prepared by the preparation method of the special-shaped chinlon 6 filament yarn.
Performance testing
The profiled black chinlon 6 filaments obtained in the examples 1 to 6 are subjected to a titer test by a strand length measuring machine and a breaking strength and breaking elongation test of fibers by a full-automatic single-yarn strength machine respectively.
The test results are:
the titer of the profiled black nylon-6 filament obtained in the examples 1 to 4 is 40.0 to 80.0dtex, the breaking strength of the fiber is 4.21 to 4.98cN/dtex, and the elongation at break is 44.21 to 49.55 percent;
the titer of the profiled black nylon-6 filament (40D/12F) obtained in example 5 is 44.42dtex, the breaking strength of the fiber is 4.98cN/dtex, and the elongation at break is 49.55%;
the titer of the profiled black nylon-6 filament (70D/51F) obtained in example 6 is 77.88dtex, the breaking strength of the fiber is 4.21cN/dtex, and the elongation at break is 44.21%.
In conclusion, the spinneret plate provided by the invention has the advantages that through the special-shaped design of the spinneret micropores of the spinneret plate, the cross section surface of the produced special-shaped nylon 6 filament is approximately in a regular triangle shape, a complete mirror surface effect is achieved, the maximum light reflection effect is achieved, and a high-brightness visual effect is presented; because the blades are of a cross-shaped structure, the surface of the obtained special-shaped nylon 6 filament is different from a complete triangle, three sides of the cross section of the special-shaped nylon 6 filament are in a curve shape, grooves on the surface of the fiber are enhanced, so that the capillary effect is enhanced, and the obtained special-shaped nylon 6 filament has high moisture absorption and sweat releasing functions;
in the preparation process, the color master batch is added to color the nylon 6 melt, then the color master batch is subjected to spinning micro extrusion on a spinneret plate, the specific surface area of the fiber and the cohesion among monofilaments are increased to lock the pigment or dye powder in the nylon 6 filament bundle, so that the prepared special-shaped nylon 6 filament presents full color and has the functions of moisture absorption and sweat releasing. When the used color master batch is a black color master batch, the special-shaped nylon 6 filament prepared by the preparation method of the application shows high brightness and high blackness, the grooves on the surface of the special-shaped nylon 6 filament enhance the connection tightness between the filaments, the fiber has good cohesion and higher strength, the problem of difficult end breakage in the subsequent weaving process is solved, and the special-shaped nylon 6 filament which can show high brightness and high blackness, has full color and luster, high washing fastness and moisture absorption and sweat releasing functions is obtained.
In the preparation method of the profiled nylon 6 filament, the production process is controllable, the product quality is stable, the indexes of the prepared profiled nylon 6 filament such as breaking strength, breaking elongation, boiling water expansion and contraction rate and the like all reach the specified range of GB/T16603-2008 Chinlon drawn yarns, and the requirements of subsequent processing and use can be met.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (5)
1. A preparation method of profiled nylon 6 filament is characterized by comprising the following steps:
step 1, mixing and melting dry nylon 6 slices with relative viscosity of 2.30-2.50 and color master batches to obtain nylon 6 melt;
step 2, extruding the melt of the nylon 6 obtained in the step 1 through spinneret micropores on a spinneret plate to obtain a nylon 6 filament bundle;
step 3, sequentially carrying out monomer suction, side-blowing cooling, cluster oiling, stretching and shaping and network interlacing on the nylon 6 filament bundle obtained in the step 2, and then winding and forming to obtain the special-shaped nylon 6 filament;
the spinneret plate comprises a substrate and at least one spinneret micropore, the spinneret micropore is arranged on the substrate, the cross section of the spinneret micropore is in a trefoil shape, the included angle between every two adjacent blades is 120 degrees, and the shape and the size of each blade are the same; the blades are in a cross-shaped structure, and the end parts of the cross-shaped structure are arc-shaped;
the cross-shaped structure consists of four mutually perpendicular arms, the width of the four arms is 0.06-0.10mm, and the length of the three arms is equal and is 0.06-0.10 mm.
2. A process for preparing shaped chinlon 6 filament according to claim 1, wherein the height of the spinning micropores is 0.56-0.90 mm.
3. A process for preparing shaped chinlon 6 filament according to claim 1, wherein the farthest distance from the center of the cross section of the trilobal spinneret micropores to the three blades is 0.20-0.30 mm.
4. A process for preparing shaped chinlon 6 filament according to claim 1, wherein the length of the blades is 0.14-0.20 mm.
5. A profiled nylon-6 filament prepared by the process for preparing a profiled nylon-6 filament according to any one of claims 1 to 4.
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| CN116590804B (en) * | 2023-07-17 | 2024-03-22 | 江苏新视界先进功能纤维创新中心有限公司 | Profiled fiber with multistage wicking structure and application of profiled fiber to geotextile |
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| CN102443871A (en) * | 2010-10-08 | 2012-05-09 | 太仓荣文合成纤维有限公司 | Production method of low-temperature easy-to-dye polyester fiber |
| CN104805519B (en) * | 2015-04-24 | 2017-01-25 | 浙江美丝邦化纤有限公司 | Production method of polyamide-6 profiled fiber |
| CN106835309A (en) * | 2017-01-24 | 2017-06-13 | 长乐力恒锦纶科技有限公司 | A kind of production method of fine-denier porous superbright light trilobal chinlon 6 filament |
| CN107164812B (en) * | 2017-07-03 | 2019-12-17 | 福建锦江科技有限公司 | Special-shaped chinlon 6 fiber and preparation method thereof |
| CN108893793B (en) * | 2018-09-06 | 2020-07-14 | 福建永荣锦江股份有限公司 | Spinneret plate, profiled nylon 6 drawn yarn and preparation method thereof |
| CN109576804A (en) * | 2018-11-05 | 2019-04-05 | 福建锦江科技有限公司 | A kind of 6 drafting silk of polyamide fibre and preparation method thereof with spot effect |
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2019
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