CN114197084A - Preparation method of black chinlon 6 fiber with composite structure - Google Patents
Preparation method of black chinlon 6 fiber with composite structure Download PDFInfo
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- CN114197084A CN114197084A CN202111617157.5A CN202111617157A CN114197084A CN 114197084 A CN114197084 A CN 114197084A CN 202111617157 A CN202111617157 A CN 202111617157A CN 114197084 A CN114197084 A CN 114197084A
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- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 239000000835 fiber Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 31
- 229920006052 Chinlon® Polymers 0.000 title claims abstract description 12
- 229920002292 Nylon 6 Polymers 0.000 claims abstract description 45
- 238000009987 spinning Methods 0.000 claims abstract description 39
- 238000002844 melting Methods 0.000 claims abstract description 29
- 230000008018 melting Effects 0.000 claims abstract description 29
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 21
- 239000006229 carbon black Substances 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 16
- 239000000155 melt Substances 0.000 claims description 15
- 238000007664 blowing Methods 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 229920001778 nylon Polymers 0.000 abstract description 8
- 239000004753 textile Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000002074 melt spinning Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000012792 core layer Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
-
- 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
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
-
- 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
Abstract
The invention provides a preparation method of black chinlon 6 fiber with a composite structure, which comprises the following steps: step S1, melting the polyamide 6 slices through a first bunker into a first screw melting extruder to be melted as a second component; step S2, mixing the carbon black master batch and the polyamide 6 slices, feeding the mixture into a second screw melting extruder through a second bunker, and melting the mixture to be used as a first component; step S3, enabling the first component melt to enter the same spinning manifold through a first filter and a first metering pump, and enabling the second component melt to enter the same spinning manifold through a second filter and a second metering pump; the black nylon fiber prepared by the method has improved quality, increases the economic benefit of enterprises, and promotes the innovation of products in the textile and clothing industry.
Description
Technical Field
The invention relates to the technical field of spinning, in particular to a preparation method of black chinlon 6 fibers with a composite structure.
Background
China is the largest world chinlon producing country, and the yield still keeps increasing at a higher speed. According to the data of the national statistical bureau and the China chemical fiber industry Association, under the drive of continuous rising of the demand of downstream textile field in recent five years, the yield of chinlon in China is rapidly increased, which reaches 384.25 ten thousand tons as far as 2020, and is increased by 9.79% on a same scale, wherein the energy expansion of the chinlon civil silk is 13.8 ten thousand tons in 2020. In recent years, sustainable development is an important attribute in the future, and recycled fibers, bio-based fibers and other fibers with the characteristics of green, low carbon and recyclability belong to the current fashion trend and the key development direction of the fibers. As an important component of the green fiber, the nylon fiber colored by the stock solution is more gorgeous, durable, healthy, friendly and environment-friendly in color and luster, and is deeply touted by consumers and the textile industry, wherein the demand of the black nylon fiber colored by the stock solution is the largest.
Expert scholars in the industry have conducted a great deal of research on dope-colored black nylon fibers, for example, Chinese patent CN 113249801A discloses a nylon 6 semi-dull in-situ black yarn production process, and the preparation method comprises the steps of continuously feeding black semi-dull nylon 6 slices subjected to in-situ polymerization into a screw extruder, and sequentially carrying out melt spinning, cooling, oiling, drafting and winding forming to prepare the nylon 6 semi-dull black yarn. Chinese patent CN 112267160A discloses a preparation method of a nylon 6 dull black yarn, which comprises the steps of respectively carrying out cryogenic treatment on a full dull nylon 6 slice and black master batch under certain parameter conditions, mixing the obtained full dull nylon 6 powder and black master batch powder, placing the mixture in a nitrogen environment for drying, and then carrying out melt spinning, cooling, oiling, drafting and winding forming in sequence to prepare the nylon 6 dull black yarn. After review, the conventional preparation method of the black nylon fiber is found to be mainly produced by adopting black master batches through melt spinning.
The black master batch used in the domestic market mainly depends on imported products, the price of the imported products is high, the period of a spinning assembly is short, and the black master batch is not beneficial to large-batch continuous production. At present, Chinese patent CN 113321929A is applied to disclose a carbon black master batch for nylon 6 civil filament fiber and a preparation method and application thereof, and simultaneously Chinese patent CN 10663384A is applied to disclose a black master batch, nylon 6 fiber and a preparation method thereof. However, the following problems have been found through production and use: (1) the carbon black particles exist on the surface of the black nylon fiber, so that the breaking strength is reduced compared with that of the conventional nylon 6 fiber, and the use of the fiber is influenced; (2) the black nylon fiber has the problems of uneven oil film on the surface, large friction force, easy generation of static electricity, large abrasion to spinning equipment in the spinning process, large abrasion to a yarn guide in the weaving process, large tension difference, low weaving efficiency and even bursting of a pan head.
Disclosure of Invention
In view of the above, the present invention provides a method for preparing black nylon-6 fiber with a composite structure, which can solve the above problems of the background art.
The invention is realized by adopting the following method: a preparation method of black chinlon 6 fiber with a composite structure is characterized by comprising the following steps: the preparation method comprises the following steps:
step S1, melting the polyamide 6 slices through a first bunker into a first screw melting extruder to be melted as a second component;
step S2, mixing the carbon black master batch and the polyamide 6 slices, feeding the mixture into a second screw melting extruder through a second bunker, and melting the mixture to be used as a first component;
step S3, enabling the first component melt to enter the same spinning manifold through a first filter and a first metering pump, and enabling the second component melt to enter the same spinning manifold through a second filter and a second metering pump;
and S4, after the first component melt and the second component melt meet each other in a composite spinning assembly in a spinning box, the first component melt and the second component melt are sprayed out from the same spinning hole to form tows, and the black nylon-6 fiber with the composite structure is obtained through air blowing cooling, bundling oiling, winding and stretching.
Further, the particle size of the carbon black master batch is 25-30 nm, the water content is 400-450 ppm, the relative viscosity is 1.49-2.19, and the melt index is 4.5-12.9 g/10 min.
Further, the melting temperature of the first screw melt extruder in the step S1 is 255 to 270 ℃, and the head pressure is 80 to 85kgf/cm2。
Further, the melting temperature of the second screw melt extruder in the step S2 is 255 to 270 ℃, and the head pressure is 80 to 85kgf/cm2。
Further, the carbon black master batch accounts for 5 to 20 weight percent. The weight portion of the polyamide 6 slice is 80-95%.
Further, in the step S3, the cooling blowing wind speed is 0.4-0.5 m/S, and the wind pressure is 500 Pa.
Further, the ratio of the first component melt to the second component melt in the step S3 is 70/30-85/15.
Further, the composite spinning assembly in the step S4 includes a melt distribution plate, a filtering sand cup, and a composite spinneret plate.
Further, the frequency of the first metering pump in the step S3 is 30 to 50HZ, and the frequency of the second metering pump is 30 to 50 HZ.
The invention has the following advantages: according to the invention, the carbon black master batch and the polyamide 6 chips are melted and mixed to be used as the core layer, and the surface of the core layer is coated with the layer of transparent polyamide 6 by a composite spinning process, so that the problem that carbon black powder adheres to the surface in the traditional melt spinning process is solved, the fiber surface is smooth, the friction force is reduced, and the abrasion to spinning equipment and weaving equipment is reduced; the invention improves the luster of the dope-dyed black chinlon 6, and improves the physical and chemical properties of fiber breaking strength, color fastness and the like; the black nylon fiber prepared by the method has improved quality, increases the economic benefit of enterprises, and promotes the innovation of products in the textile and clothing industry.
Drawings
FIG. 1 is a schematic flow chart of the method of the present invention.
FIG. 2 is a comparative table of performance tests.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1 and 2, the present invention provides an embodiment of a method for preparing black nylon-6 fiber with a composite structure, wherein the method comprises the following steps:
step S1, melting the polyamide 6 chips through a first bunker into a first screw melting extruder to be used as a second component, wherein the model of the first screw melting extruder can be Bamager 9E-30D, but is not limited to the model;
step S2, mixing the carbon black master batch and the polyamide 6 chips, feeding the mixture into a second screw melting extruder through a second bunker, melting the mixture to serve as a first component, wherein the model of the second screw melting extruder can be Bamager 6E-24D, but is not limited to the above, and the model of the first metering pump and the model of the second metering pump can be SDP-E01/10, but is not limited to the above;
step S3, feeding the first component melt into the same spinning manifold through a first filter and a first metering pump, and feeding the second component melt into the same spinning manifold through a second filter and a second metering pump, where the type of the first filter and the second filter may be SHJ300, but is not limited thereto;
and S4, after the first component melt and the second component melt meet each other in a composite spinning assembly in a spinning box, the first component melt and the second component melt are sprayed out from the same spinning hole in the composite spinning assembly to form tows, and the black nylon 6 fiber with the composite structure is obtained through air blowing cooling, bundling oiling, winding and stretching, wherein the composite spinning assembly is a two-component composite spinneret assembly in the patent CN 106801264A.
The invention is further illustrated by the following specific examples:
a preparation method of black chinlon 6 fiber with a composite structure comprises the following steps:
1) 8.5 weight percent of carbon black master batch and 91.5 weight percent of polyamide 6 slice are melted and mixed through a first screw extruder to be used as a first component under the conditions that the melting temperature is 255-270 ℃, the head pressure is 85kgf/cm2 and the frequency of a spinning metering pump is 6.62HZ, wherein the carbon black master batch is prepared from carbon black master batch with the published patent number of CN 113321929A, the particle size is 25-30 nm, the water content is 400ppm, the relative viscosity is 1.95 and the melt index is 8.6g/10 min.
2) Slicing polyamide 6 at a melting temperature of 255-265 ℃ and a head pressure of 90kgf/cm2And a spinning metering pump frequency of 46.79HZ, as a second component, by melting through a second screw extruder.
Example 1
And respectively enabling 7 parts of the melt of the first component and 3 parts of the melt of the second component to pass through a first metering pump and a second metering pump, then enabling the melt to enter respective melt distribution pipelines, enabling the melt to meet the composite spinning components and then be sprayed out from the same spinning hole to form a filament bundle, and carrying out air blowing cooling, cluster oiling, winding and stretching to obtain the black nylon 6 fiber with the composite structure, wherein the air speed of cooling air blowing is 0.45m/s, and the air pressure is 500 Pa.
Example 2
Compared with the technical scheme of the embodiment 1, the preparation method of the black nylon-6 fiber with the composite structure can be improved as follows:
and respectively enabling 6 parts of the melt of the first component and 4 parts of the melt of the second component to enter the same spinning box body through a first metering pump and a second metering pump, enabling the melt to meet the composite spinning components and then be sprayed out from the same spinning hole to form a filament bundle, and carrying out air blowing cooling, cluster oiling, winding and stretching to obtain the black nylon 6 fiber with the composite structure, wherein the air speed of cooling air blowing is 0.45m/s, and the air pressure is 500 Pa.
Example 3
Compared with the technical scheme of the embodiment 1, the preparation method of the black nylon-6 fiber with the composite structure can be improved as follows:
and respectively enabling 5 parts of the melt of the first component and 5 parts of the melt of the second component to pass through a first metering pump and a second metering pump, then enabling the melt to enter the same spinning box body, enabling the melt to meet the composite spinning components and then be sprayed out from the same spinning hole to form a filament bundle, and carrying out air blowing cooling, cluster oiling, winding and stretching to obtain the black nylon 6 fiber with the composite structure, wherein the air speed of cooling air blowing is 0.45m/s, and the air pressure is 500 Pa.
Example 4
A preparation method of black chinlon 6 fibers comprises the following steps:
1) mixing and melting 5% of carbon black master batch and 93% of polyamide 6 chips at the melting temperature of 255-270 ℃, the head pressure of 85kgf/cm2 and the spinning metering of 1.8 × 12 pump frequency of 21.5HZ, and then spraying out from a spinneret orifice of a spinning assembly to form a tow;
2) and carrying out air blowing cooling, bundling oiling, winding and stretching on the tows to obtain the black nylon 6 fiber with the composite structure, wherein the air speed of cooling air blowing is 0.45m/s, and the air pressure is 500 Pa.
The above test samples were tested for breaking strength, elongation at break, gloss, color fastness, and nozzle cycle, and the results are shown in FIG. 2.
From the performance test comparison table of fig. 2, it can be found that the sheath-core composite dope-dyed fiber prepared by the invention has higher strength, smaller difference between spindle positions and more uniform strength compared with the normal dope-dyed fiber, and the selection of 3:7 composite is closer to the requirements of customers on color under the condition of comparing the fiber gloss.
It is worth mentioning that: in FIG. 1, PA6 chip is the polyamide 6 chip, and the carbon black master batch is prepared from the carbon black master batch disclosed in the patent publication No. CN 113321929A.
The electric circuit principles and structures of the screw melt extruder, the metering pump, the filter, the spinning manifold and the cooling blower, the oiling device and the winding device of fig. 1 in the present invention are well known in the art and will not be described in detail herein.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (8)
1. A preparation method of black chinlon 6 fiber with a composite structure is characterized by comprising the following steps: the preparation method comprises the following steps:
step S1, melting the polyamide 6 slices through a first bunker into a first screw melting extruder to be melted as a second component;
step S2, mixing the carbon black master batch and the polyamide 6 slices, feeding the mixture into a second screw melting extruder through a second bunker, and melting the mixture to be used as a first component;
step S3, enabling the first component melt to enter the same spinning manifold through a first filter and a first metering pump, and enabling the second component melt to enter the same spinning manifold through a second filter and a second metering pump;
and S4, after the first component melt and the second component melt meet each other in a composite spinning assembly in a spinning box, the first component melt and the second component melt are sprayed out from the same spinning hole to form tows, and the black nylon-6 fiber with the composite structure is obtained through air blowing cooling, bundling oiling, winding and stretching.
2. The preparation method of the black nylon 6 fiber with the composite structure as claimed in claim 1, wherein the preparation method comprises the following steps: the carbon black master batch has the particle size of 25-30 nm, the water content of 400-450 ppm, the relative viscosity of 1.49-2.19 and the melt index of 4.5-12.9 g/10 min.
3. The preparation method of the black nylon 6 fiber with the composite structure as claimed in claim 1, wherein the preparation method comprises the following steps: in the step S1, the melting temperature of the first screw melting extruder is 255-270 ℃, and the head pressure is 80-85 kgf/cm2。
4. The preparation method of the black nylon 6 fiber with the composite structure as claimed in claim 1, wherein the preparation method comprises the following steps: in the step S2, the melting temperature of the second screw melting extruder is 255-270 ℃, and the head pressure is 80-85 kgf/cm2。
5. The preparation method of the black nylon 6 fiber with the composite structure as claimed in claim 1, wherein the preparation method comprises the following steps: the carbon black master batch accounts for 5-20% of the total weight of the composite material, and the polyamide 6 slice accounts for 80-95% of the total weight of the composite material.
6. The preparation method of the black nylon 6 fiber with the composite structure as claimed in claim 1, wherein the preparation method comprises the following steps: in the step S3, the cooling blowing wind speed is 0.4-0.5 m/S, and the wind pressure is 500 Pa.
7. The preparation method of the black nylon 6 fiber with the composite structure as claimed in claim 1, wherein the preparation method comprises the following steps: the ratio of the first component melt to the second component melt in the step S3 is 70/30-85/15.
8. The preparation method of the black nylon 6 fiber with the composite structure as claimed in claim 1, wherein the preparation method comprises the following steps: in the step S3, the frequency of the first metering pump is 30-50 HZ, and the frequency of the second metering pump is 30-50 HZ.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111617157.5A CN114197084A (en) | 2021-12-27 | 2021-12-27 | Preparation method of black chinlon 6 fiber with composite structure |
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| CN202111617157.5A CN114197084A (en) | 2021-12-27 | 2021-12-27 | Preparation method of black chinlon 6 fiber with composite structure |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106633834A (en) * | 2016-10-09 | 2017-05-10 | 福建锦江科技有限公司 | Black masterbatch, nylon 6 fiber and preparation method of black masterbatch and nylon 6 fiber |
| CN106948026A (en) * | 2017-05-08 | 2017-07-14 | 福建景丰科技有限公司 | A kind of fiber of white bamboo carbon chinlon 6 and its production method |
| CN106968024A (en) * | 2017-05-08 | 2017-07-21 | 福建景丰科技有限公司 | A kind of production method of the blue nylon-6 fiber of original liquid coloring |
| CN111206298A (en) * | 2020-03-10 | 2020-05-29 | 闽江学院 | Preparation method of skin-core composite structure dope-colored red chinlon 6 fiber |
-
2021
- 2021-12-27 CN CN202111617157.5A patent/CN114197084A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106633834A (en) * | 2016-10-09 | 2017-05-10 | 福建锦江科技有限公司 | Black masterbatch, nylon 6 fiber and preparation method of black masterbatch and nylon 6 fiber |
| CN106948026A (en) * | 2017-05-08 | 2017-07-14 | 福建景丰科技有限公司 | A kind of fiber of white bamboo carbon chinlon 6 and its production method |
| CN106968024A (en) * | 2017-05-08 | 2017-07-21 | 福建景丰科技有限公司 | A kind of production method of the blue nylon-6 fiber of original liquid coloring |
| CN111206298A (en) * | 2020-03-10 | 2020-05-29 | 闽江学院 | Preparation method of skin-core composite structure dope-colored red chinlon 6 fiber |
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Application publication date: 20220318 |