KR20160054198A - Nylon/ polyster splittable composite fiber with excellent form stability and bulky property - Google Patents
Nylon/ polyster splittable composite fiber with excellent form stability and bulky property Download PDFInfo
- Publication number
- KR20160054198A KR20160054198A KR1020140153455A KR20140153455A KR20160054198A KR 20160054198 A KR20160054198 A KR 20160054198A KR 1020140153455 A KR1020140153455 A KR 1020140153455A KR 20140153455 A KR20140153455 A KR 20140153455A KR 20160054198 A KR20160054198 A KR 20160054198A
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- nylon
- polyester
- component
- conjugate fiber
- splittable conjugate
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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
-
- 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
-
- 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
- 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
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
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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)
- Multicomponent Fibers (AREA)
Abstract
Description
The present invention relates to a nylon / polyester splittable conjugate fiber having excellent shape stability and bulky properties, and is composed of a slit component (A) composed of a nylon 64 random copolymer and dividing a fiber cross section into a plurality of compartments and a polyester polymer (A) and having a triangular cross section and a plurality of split components (B) located in the compartments separated by the slit component (A), the excellent shrinkage characteristics of the nylon 64 random copolymer as the slit component It is a nylon / polyester split type compound which is excellent in morphological stability and bulky property which can express differentiated touch by maximizing the surface area of polyester which is an external division component (B) Fiber.
Conventional splittable conjugate fiber is produced by spinning a slit component of nylon and splitting component of polyester, and the slit component and splitting component are separated by physical chemical treatment to obtain a very fine fineness (less than 0.25 denier) .
The nylon / polyester split type composite fibers are separated into a nylon slit component and a polyester polymer split component through various post-processes such as weight reduction, shrinkage process, dyeing, etc. in the form of fiber structures such as woven, . At this time, the capillary phenomenon due to the divided micro-space manifests high moisture permeability, and the surface area is maximized by the division. The excellent softness and softness due to such microfiber properties have been applied to wipers and artificial leather.
However, the conventional fiber structure using nylon / polyester splittable composite fibers has a reduced density and elastic recovery rate due to the miniaturization, and the shape stability is significantly lowered. In addition, due to the deformation caused by the applied pressure, The sex can not be fully manifested.
In order to solve this problem, a method of using polytrimethylene terephthalate having a high elastic recovery rate as a split component of polyester, or a method of densifying a fiber structure by increasing shrinkage ratio of a slit component as a nylon polymer is used.
However, in the case of the conventional method using polytrimethylene terephthalate instead of a general polyester as a divided component, the polytrimethylene terephthalate is not produced domestically and is imported at a higher price than polyethylene terephthalate (polyester) The manufacturing cost is increased, and there is a limit to improving the shape stability only by improving the elastic recovery property.
As a conventional method for improving the shrinkage of a slit component which is a nylon polymer, there is a method of shrinking a nylon component by processing a conventional nylon with a special agent such as benzyl alcohol, or blending an aromatic nylon with an aliphatic nylon component to impart shrinkage However, the degree of shrinkage of the fiber structure using benzyl alcohols is limited. Due to the problem of treating special medicines of expensive benzyl alcohols, it is also problematic in terms of cost and uneven dyeing due to residual medicines. In addition, when an aliphatic nylon component and an aromatic nylon component are used, a compounding process for incorporating both polymers is added, and radioactivity is significantly lowered due to compatibility problems between the two polymers.
Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a nylon / polyester splittable conjugate fiber capable of significantly improving form stability and bulky property in the production of fiber structure.
Another object of the present invention is to provide a method for producing such a nylon / polyester splittable conjugate fiber with low production cost and high productivity.
In order to achieve the above object, according to the present invention, a nylon 64 random copolymer as a slit component (A) and a polyester polymer as a split component (B) are spin-spinned to obtain (i) a nylon 64 random copolymer, (B) located in the sections divided by the slit component (A) and having a triangular cross section and composed of one slit component (A) for dividing the slit component into a plurality of slits ) Is produced.
Since the nylon / polyester splittable conjugate fiber according to the present invention uses nylon 64 random copolymer as the slit component (A), when it is applied to a fiber structure, it has high shrinkability in ordinary processes such as simple scouring or dyeing process . As a result, the division of the slit component (A) as the nylon polymer and the split component (B) as the polyester is maximized and the slit component (A) as the nylon polymer is not exposed on the surface of the fiber structure, It is possible to obtain a processed paper having a clear color and a bulky and dense structure upon dyeing.
In addition, the nylon / polyester splittable conjugate fiber according to the present invention does not have a mixing process for the binary component to shrink the slit component (A), which is a nylon polymer, and since the fiber structure to which this is applied has no separate shrinking process, Is low in cost, high in productivity, and excellent in yarn uniformity.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view of a nylon / polyester splittable conjugate fiber according to the present invention; FIG.
3 is an optical microscope photograph of the nylon / polyester splittable conjugate fiber according to the present invention.
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
As shown in FIGS. 1 and 2, the nylon / polyester splittable conjugate fiber according to the present invention comprises (i) one slit component A (A) composed of a nylon 64 random copolymer and dividing the cross- ) And (ii) a plurality of split components (B) comprising a polyester polymer and having a triangular cross-section and located in the compartments separated by a slit component (A).
1 to 2 are schematic cross-sectional views of a nylon / polyester splittable conjugate fiber according to the present invention.
The nylon 64 random copolymer is composed of 10 to 40 mol% of pyrrolidone as a nylon 4 monomer and 60 to 90 mol% of caprolactam as a nylon 6 monomer, and has a molecular weight of 70,000 to 120,000 g / mol and a polydispersity index) is 1 to 2.
The nylon 64 random copolymer is prepared by anion polymerization of caprolactam and 2-pyrrolidone to have a crystallinity of as low as 50% or less. Depending on the constitutional molar ratio of pyrrolidone as the nylon 4 monomer and caprolactam as the nylon 6 monomer, Adjustment is possible from 150 ℃ to 220 ℃.
Nylon 46 polymer, on the other hand, is produced by the polycondensation of 1,4-diaminobutane and adipic acid and has the highest crystallization rate, high melting point, excellent friction resistance, low deformation coefficient, oil and grease And is mainly used as engineering plastics.
The total weight ratio of the slit component (A) to the split component (B) on the cross section of the nylon / polyester splittable conjugate fiber is preferably 10 to 50:90 to 50.
The number of the divided components (B) is preferably 4 to 12.
The breaking strength of the nylon / polyester splittable conjugate fiber according to the present invention is 3.0 to 5.5 g / d, the elongation at break is 20 to 45%, and the boiling shrinkage ratio is 20 to 60%.
The nylon 64 random polymer constituting the slit component (A) has a relative viscosity (R, V) of 2.4 to 4.5, a melting point of 170 to 220 ° C, and a specific gravity of 1.11 to 1.13 g / cm 3.
The polyester polymer constituting the segmented component (B) has an intrinsic viscosity (IV) of 0.55 to 0.75.
The nylon 64 random copolymer is obtained by anion or bulk polymerization at a ratio of 60-90 mol% to 10-40 mol% of caprolactam, which is a monomer of nylon 6 polymer, and pyrrolidone, which is a nylon 4 polymer monomer. As the molar ratio of caprolactam increases, the properties of nylon 6 become stronger and the effect of increasing the melting point is exhibited. Pyrrolidone can be obtained by degradation of the enzyme from cellulose, and is also known as a bio-based material. Nylon 4 is a polymer of butanolactam [also referred to as butylolactam, 2-pyrrolidinone, α- or 2-pyrrolidone], which is a polymer of 2-pyrrolidone ring opening under certain conditions ≪ / RTI > The high shrinkage polymer thus produced has a boiling shrinkage of 30% to 60% at the time of spinning as a general yarn and has a melting point of 150 to 220 ° C and a relative viscosity (RV) of 2.4 to 4.5 as measured using a sulfuric acid viscosity method . Since the relative viscosity can be adjusted similar to that of nylon 6 and nylon 66, it is possible to manufacture yarn without major modification even with the existing composite spinning facility.
Pyrrolidone, a nylon 4 monomer, is a bio-based material and can be used as an environmentally friendly material. Consumers are increasingly interested in eco-friendly materials in the high oil price era due to the depletion of fossil fuels. Also, by using it for clothing, it has the image that it does not destroy the natural environment, and it is suitable as a fiber to be used in the future where resource exhaustion is expected.
However, since pure nylon 4 has a high melting point, the processing temperature and the decomposition temperature for melt spinning are very close to each other, which makes processing difficult. Also, because of its high moisture content, it was not suitable for engineering plastics.
When using nylon 4 for clothing, the amide group contains a lot of contrast with ordinary nylon, and the hydrophilic nature is strong. Accordingly, the present invention provides a nylon 64 random copolymer obtained by copolymerizing nylon 4 and nylon 6 at a certain ratio, thereby lowering the melting point to ensure a processing temperature and controlling crystallinity, thereby exhibiting high shrinkage performance.
In addition, nylon 64 random copolymers are stable in radioactivity, and since the melting point can be controlled within a certain range by controlling the content of caprolactam, which is a monomer of nylon 6 polymer, and pyrrolidone, which is a nylon 4 polymer monomer, It is also advantageous for application.
In the case of nylon 64 and nylon 610 copolymerized with the same molar amount of nylon 6 and nylon 4, such high accumulation characteristics do not appear and the moisture content is rather low. However, in the nylon 64 random copolymer, As a result, the high viscosity is easily displayed by the heat. Nylon 64 random copolymers are applied to nylon / polyester splittable conjugated fibers, and nylon 64 random copolymers are applied to the slit component (A), which is a nylon component. Therefore, when applied to a fiber structure, And has high shrinkability in the process. Due to this property, the division of the slit component (A) as the nylon component and the split component (B) as the polyester component is maximized and the slit component (A) as the nylon component is not exposed on the surface of the fiber structure, Since only the component (B) is relatively more emphasized, a fabric having a clear color and a bulky and dense structure can be obtained. In addition, the fiber structure to which the present invention is applied can be sufficiently shrunk without any additional shrinking process, so that the production cost is low, productivity is high, and yarn uniformity is excellent.
Hereinafter, the present invention will be described in detail with reference to examples and comparative examples.
However, the scope of protection of the present invention is not limited to the following examples.
Example 1
A nylon 64 random co-polymer having a melting point of 170 ° C and a relative viscosity (RV) of 2.6 was obtained by anionic polymerization of 30 mol% of pyrrolidone and 70 mol% of caprolactam, (A) of a nylon 64 random copolymer that divides the cross-section of the conjugate fiber into eight sections and the eight slices separated by the slit component (A), respectively, by spinning a polyethylene terephthalate (PET) (PET) having a triangular cross section was prepared by using the same method as that of Example 1, except that the nylon / polyester splittable conjugate fiber was used. In the detailed spinning conditions, the spinning temperature was 285 캜, spinning so that the weight ratio of nylon 64 Random polymer to polyethylene terephthalate (PET) was mixed at an angle of 35: 65 in the spinning pack, then cooled / solidified through the cooling chamber to 1450 mpm, The resulting nylon / polyester splittable conjugate fiber was stretched at a speed of 4150 mpm, a temperature of 80 캜, and a temperature of 130 캜 in a first godet roller and a second godet roller, respectively, and the prepared nylon / polyester splittable conjugate fiber had a 75 denier / 36 filament spindown yarn SDY).
The fiber structure using a 3-inch diameter, 30-gauge, and circular knitting machine was made into a length of 30 cm by using the nylon / polyester split type composite fiber prepared as described above. The fiber structure was refined and divided into 2% sodium hydroxide solution at 90 to 95 ° C for 30 minutes, Structure was prepared.
The results of evaluating physical properties of the nylon / polyester splittable conjugate fiber prepared as described above were as shown in Table 1, and the physical properties of the fabric structure were evaluated as shown in Table 2.
Comparative Example 1
A nylon 64 random copolymer obtained by anionic polymerization of 30 mol% of pyrrolidone and 70 mol% of caprolactam and having a melting point of 170 ° C. and a relative viscosity (RV) of 2.6 was spun by a single spinning method 75 denier / 36 filament spin draw yarn (SDY).
For the detailed spinning conditions, the spinning temperature was set to 268 캜, and then cooled / solidified through the cooling chamber to give a drawing temperature of 140 캜 at the first godet roller and the second godet roller at speeds of 2000 mpm and 4480 mpm, respectively.
The fiber structure using a spinning drawer (SDY) manufactured as described above was made into a length of 30 cm with a diameter of 3 inches, a 30 gauge, and a circular knitting machine. The fiber structure was refined and divided into 2% sodium hydroxide solution at 90 to 95 ° C for 30 minutes, .
The results of evaluating the physical properties of the spin dyed yarn (SDY) prepared as described above were as shown in Table 1, and the physical properties of the fabric structure were evaluated as shown in Table 2.
Comparative Example 2
A slit component (A) of a nylon 6 polymer in which nylon 6 having a relative viscosity (RV) of 2.6 and polyethylene terephthalate (PET) having an intrinsic viscosity (IV) of 0.63 are combined to divide the cross- The nylon / polyester splittable conjugate fiber was prepared from eight split component (B) of polyethylene terephthalate (PET) having a triangular cross section and located in each of the eight compartments divided by the slit component (A) DP. In the detailed spinning conditions, the spinning temperature was 285 캜, spinning so that the weight ratio of nylon 64 Random polymer to polyethylene terephthalate (PET) was mixed at an angle of 35: 65 in the spinning pack, then cooled / solidified through the cooling chamber to 1450 mpm, The resulting nylon / polyester splittable conjugate fiber was stretched at a speed of 4150 mpm, a temperature of 80 캜, and a temperature of 130 캜 in a first godet roller and a second godet roller, respectively, and the prepared nylon / polyester splittable conjugate fiber had a 75 denier / 36 filament spindown yarn SDY).
The results of evaluating physical properties of the nylon / polyester splittable conjugate fiber prepared as described above were as shown in Table 1, and the physical properties of the fabric structure were evaluated as shown in Table 2.
Method of measuring boiling shrinkage (own method)
1) Twist the sample to be measured twenty times, and then put the clip on both sides to prepare a sample. Make three samples per sample.
2) Bind both ends to make a length of 50cm, give a constant initial load, measure length
- The initial load is 1 / 10g of the denier.
- For example, if the test company is 50denier, 5g should be hanged.
- Measuring length: L 0
3) Leave at constant temperature and humidity for 24 hours
- about 25 < 0 > C, 65%
- Maintains the initial weight
4) Length of test piece after leaving
- Measuring length: L 1
- Maintains the initial weight
5) Delay formula
6) The delayed test yarn (L 2 ) was immersed in a non-water (90 to 95 ° C) for 30 minutes
- Dipping the entire test strip in a nodule
- Maintain the initial weight (be careful not to touch the bottom of the extra load)
7) Take out the test paper and wipe off the water and leave it at constant temperature and humidity for 24 hours
- about 25 < 0 > C, 65%
- Maintains the initial weight
8) Length of test piece after leaving
- Measuring length: L 3
- Maintains the initial weight
9)
Breaking strength and breaking elongation measurement method
1) Conditioning the test
- about 25 < 0 > C, 65%
- Leave for 24 hours
2) Tester setting
- The device uses automatic constant speed tensile tester
- The tester sets the gripping distance to (250 ± 1) mm
- Constant speed of clamp is set to 250mm / min with accuracy of ± 2%
It is also possible to increase the speed
- Before gripping the specimen in the clamp, ensure that the jaws are straight, parallel,
Make sure you do not leave when you leave
- Fit the specimen to the clamp
- During the test, the specimen shall be free of slippage exceeding 2 mm between the jaws
If the test results are repeated,
Test results are also excluded if cut or cut within 5 mm from the jaw
A: Slit component (nylon 64 random polymer component)
B: Split component (polyester component)
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140153455A KR20160054198A (en) | 2014-11-06 | 2014-11-06 | Nylon/ polyster splittable composite fiber with excellent form stability and bulky property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140153455A KR20160054198A (en) | 2014-11-06 | 2014-11-06 | Nylon/ polyster splittable composite fiber with excellent form stability and bulky property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20160054198A true KR20160054198A (en) | 2016-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020140153455A KR20160054198A (en) | 2014-11-06 | 2014-11-06 | Nylon/ polyster splittable composite fiber with excellent form stability and bulky property |
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| Country | Link |
|---|---|
| KR (1) | KR20160054198A (en) |
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2014
- 2014-11-06 KR KR1020140153455A patent/KR20160054198A/en not_active Application Discontinuation
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