Two-component nylon elastic yarn and manufacturing process of fabric thereof

Abstract

The application discloses a two-component nylon elastic yarn and a manufacturing process thereof, and relates to the technical field of textiles.The two-component nylon elastic yarn comprises an elastic yarn body which is composed of a yarn core and an outer surface layer arc ring part; the yarn core is a nylon polymer fiber; the outer surface layer arc ring part is an outer nylon fiber; and the elastic yarn body is obtained by blowing ATY yarn according to a blowing ratio of 1:0.8-2.8 between the nylon polymer fiber and the outer nylon fiber.The elastic yarn body is obtained by condensation of modified hexanediamine as monomer one and modified heptanedioic acid as monomer two, so that the stability of the elastic yarn body is increased, the dyeing temperature of the elastic yarn body is increased due to the π bond effect, the dyeing uniformity and elasticity are effectively improved, and the effect of high-temperature setting is suitable.

Description

Technical Field

[0001] This application relates to the field of textile technology, and in particular to a manufacturing process for a bicomponent nylon elastic yarn and its fabric. Background Technology

[0002] As people place greater emphasis on clothing comfort, more and more fabrics are required to have elasticity to improve comfort, and there is even a saying that "no fabric can be made without ammonia".

[0003] However, while spandex imparts elasticity to the yarn, it also causes the spandex to show through. Furthermore, because spandex has a lower melting point and softening temperature than conventional nylon yarn, the spandex component in the yarn is prone to losing elasticity due to high temperatures during high-temperature setting, thus affecting the practicality of the yarn and requiring improvement. Summary of the Invention

[0004] In view of this, the first objective of this application is to provide a bicomponent nylon elastic yarn to achieve enhanced elasticity, soft hand feel, and skin-friendly properties. The specific solution is as follows:

[0005] A bicomponent nylon elastic yarn includes an elastic yarn body composed of a yarn core and an outer layer arc portion; the yarn core is a nylon polymer fiber, the outer layer arc portion is an outer nylon fiber, and the elastic yarn body is obtained by blowing ATY yarn with the nylon polymer fiber and the nylon 6 fiber, nylon 66 fiber or nylon 56 fiber at a blowing ratio of 1:0.8-2.8.

[0006] Preferably, the outer nylon fiber is nylon 6 fiber, nylon 66 fiber or nylon 56 fiber.

[0007] Preferably, the outer nylon fiber is FDY or DTY.

[0008] Preferably, the nylon polymer fiber is obtained by condensation of modified hexamethylenediamine as monomer one and modified pimelic acid as monomer two; and the chemical formula of monomer one is shown below:

[0009] ;

[0010] Wherein, R1 is a C2-C8 alkyl, sulfonyl, or halogen; R2 is a phenyl or halogen.

[0011] Preferably, the elastic yarn body is obtained by blowing ATY yarn with the nylon polymer fiber and the nylon 6 fiber, nylon 66 fiber or nylon 56 fiber at a blowing ratio of 1:1.2-2.5.

[0012] Preferably, the chemical formula of monomer two is as follows:

[0013] ;

[0014] Wherein, R is phenyl, alkylphenyl, or halogen-substituted phenyl.

[0015] Preferably, the yarn core has the following specifications: 20D / 12F, 30D / 24F, 40D / 24F, 50D / 24F, 70D / 48F, 100D / 48F or 200D / 96F, and the yarn core is in the form of FDY or DTY, with a semi-dull or fully dull luster.

[0016] Preferably, the outer side of the elastic yarn body is coated with a water-repellent layer.

[0017] A manufacturing process for a bicomponent nylon elastic yarn fabric includes obtaining the bicomponent nylon elastic yarn fabric using the bicomponent nylon elastic yarn as described above.

[0018] Preferably, the process includes woven fabric steps such as plain weave, checkered, or twill weave, as well as dyeing, fluorine-free water-repellent treatment, lamination, and layering.

[0019] As can be seen from the above scheme, this application provides a manufacturing process for a bicomponent nylon elastic yarn and its fabric. The bicomponent nylon elastic yarn is obtained by condensing modified hexamethylenediamine (monomer one) and modified pimelic acid (monomer two) to obtain the elastic yarn body. This increases the stability of the elastic yarn body while enhancing the dyeing temperature of the elastic yarn body through π-bond interaction. This effectively improves dyeing uniformity and elasticity while avoiding the problem of reduced dye uptake, and also provides suitability for high-temperature setting. The manufacturing process of this bicomponent nylon elastic yarn fabric uses this elastic yarn body to prepare the corresponding fabric, resulting in a bicomponent nylon elastic yarn fabric with high elasticity, high strength, strong heat resistance, and high stability. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the bicomponent nylon elastic yarn disclosed in this application;

[0022] Figure 2 This is a scanning electron microscope image of the bicomponent nylon elastic yarn disclosed in this application;

[0023] Figure 3 This is a structural schematic diagram of the first type of elastic yarn fabric disclosed in this application;

[0024] Figure 4 This is a structural schematic diagram of the second type of elastic yarn fabric disclosed in this application;

[0025] Figure 5 This is a structural schematic diagram of the third type of elastic yarn fabric disclosed in this application.

[0026] Explanation of reference numerals in the attached figures: 1. Nylon polymer fiber; 2. Outer nylon fiber. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] The following will provide a detailed description of the manufacturing process of the bicomponent nylon elastic yarn and its fabric in this application.

[0029] like Figure 1 As shown, a bicomponent nylon elastic yarn includes an elastic yarn body composed of a yarn core and an outer layer arc portion. The yarn core is made of nylon polymer fiber, and the outer layer arc portion is made of outer nylon fiber. The elastic yarn body is obtained by blowing ATY yarn with nylon polymer fiber and outer nylon fiber at a blowing ratio of 1:0.8-2.8.

[0030] The outer nylon fiber is nylon 6, nylon 66, or nylon 56 fiber. Furthermore, the nylon 6, nylon 66, or nylon 56 fibers are in FDY or DTY form.

[0031] It should be mentioned that the nylon polymer fiber is obtained by condensation of modified hexamethylenediamine as monomer one and modified pimelic acid as monomer two; and the chemical formula of monomer one is shown below:

[0032] ;

[0033] Wherein, R1 is a C2-C8 alkyl, sulfonyl, or halogen; R2 is a phenyl or halogen.

[0034] To obtain modified hexamethylenediamine, 2-methoxy-5-benzylsulfonylphenyl was reacted with hexamethylenediamine obtained by substitution with R1 and R2 to prepare modified hexamethylenediamine, which will not be elaborated here.

[0035] The chemical formula of monomer two is shown below:

[0036] ;

[0037] Wherein, R is phenyl, alkylphenyl, or halogen-substituted phenyl.

[0038] The yarn core is prepared by condensation of modified hexamethylenediamine and modified pimelic acid, and the specifications of the yarn core are controlled to be 20D / 12F, 30D / 24F, 40D / 24F, 50D / 24F, 70D / 48F, 100D / 48F or 200D / 96F. The yarn core is in the form of FDY or DTY and has a semi-dull or fully dull luster.

[0039] like Figure 1 , Figure 2 As shown, to enhance the elasticity of this bicomponent nylon elastic yarn, the elastic yarn body is obtained by blowing nylon polymer fibers and nylon 6 fibers, nylon 66 fibers, or nylon 56 fibers at a blowing ratio of 1:1.2-2.5 using ATY yarn. Furthermore, to improve the waterproof performance of this bicomponent nylon elastic yarn, a water-repellent layer is coated on the outer side of the elastic yarn body.

[0040] A manufacturing process for a bicomponent nylon elastic yarn fabric includes using an elastic yarn body to produce a bicomponent nylon elastic yarn fabric.

[0041] like Figure 3 , Figure 4 , Figure 5 As shown, the manufacturing process of this bicomponent nylon elastic yarn fabric includes plain weave, checkered or twill woven fabric steps, and dyeing, fluorine-free water-repellent, composite film and layer composite treatment to obtain the fabric with the corresponding weave pattern.

[0042] Example 1

[0043] like Figure 1 , Figure 2 As shown, a bicomponent nylon elastic yarn includes an elastic yarn body composed of a yarn core and an outer layer arc portion. The yarn core is made of nylon polymer fiber, and the outer layer arc portion is made of outer nylon fiber. The elastic yarn body is obtained by blowing ATY yarn with nylon polymer fiber and outer nylon fiber at a blowing ratio of 1:1.2.

[0044] The outer nylon fiber is nylon 6 fiber, and the nylon 6 fiber is in DTY form.

[0045] It should be mentioned that the nylon polymer fiber is obtained by condensation of modified hexamethylenediamine as monomer one and modified pimelic acid as monomer two; and the chemical formula of monomer one is shown below:

[0046] ;

[0047] Wherein, R1 is ethane; R2 is phenyl.

[0048] To obtain modified hexamethylenediamine, 2-methoxy-5-benzylsulfonylphenyl was reacted with hexamethylenediamine obtained by substitution with R1 and R2 to prepare modified hexamethylenediamine, which will not be elaborated here.

[0049] The chemical formula of monomer two is shown below:

[0050] ;

[0051] Wherein, R is phenyl.

[0052] Furthermore, the yarn core is prepared by condensation of modified hexamethylenediamine and modified pimelic acid, and the specifications of the yarn core are controlled to be 20D / 12F, the morphology is FDY, and the luster is semi-dull.

[0053] To improve the waterproof performance of this bicomponent nylon elastic yarn, a water-repellent layer is coated on the outside of the elastic yarn body.

[0054] A manufacturing process for a bicomponent nylon elastic yarn fabric includes using an elastic yarn body to produce a bicomponent nylon elastic yarn fabric.

[0055] like Figure 3 , Figure 4 , Figure 5 As shown, the manufacturing process of this bicomponent nylon elastic yarn fabric includes plain weave, checkered or twill weave fabric steps, and obtains the fabric with the corresponding weave pattern.

[0056] Example 2

[0057] like Figure 1 , Figure 2 As shown, a bicomponent nylon elastic yarn includes an elastic yarn body composed of a yarn core and an outer layer arc portion. The yarn core is made of nylon polymer fiber, and the outer layer arc portion is made of outer nylon fiber. The elastic yarn body is obtained by blowing ATY yarn with nylon polymer fiber and outer nylon fiber at a blowing ratio of 1:1.9.

[0058] The outer nylon fiber is nylon 66 fiber, and the nylon 66 fiber is in FDY form.

[0059] It should be mentioned that the nylon polymer fiber is obtained by condensation of modified hexamethylenediamine as monomer one and modified pimelic acid as monomer two; and the chemical formula of monomer one is shown below:

[0060] ;

[0061] In this case, R1 is a sulfonyl group; R2 is a chlorine group.

[0062] To obtain modified hexamethylenediamine, 2-methoxy-5-benzylsulfonylphenyl was reacted with hexamethylenediamine obtained by substitution with R1 and R2 to prepare modified hexamethylenediamine, which will not be elaborated here.

[0063] The chemical formula of monomer two is shown below:

[0064] ;

[0065] Wherein, R is an alkylphenyl group.

[0066] Furthermore, the yarn core is prepared by condensation of modified hexamethylenediamine and modified pimelic acid, and the yarn core specifications are controlled to be 30D / 24F, the shape is DTY, and the luster is full matte.

[0067] To improve the waterproof performance of this bicomponent nylon elastic yarn, a water-repellent layer is coated on the outside of the elastic yarn body.

[0068] A manufacturing process for a bicomponent nylon elastic yarn fabric includes using an elastic yarn body to produce a bicomponent nylon elastic yarn fabric.

[0069] like Figure 3 , Figure 4 , Figure 5 As shown, the manufacturing process of this bicomponent nylon elastic yarn fabric includes plain weave, checkered or twill weave fabric steps, and obtains the fabric with the corresponding weave pattern.

[0070] Example 3

[0071] like Figure 1 As shown, a bicomponent nylon elastic yarn includes an elastic yarn body composed of a yarn core and an outer layer arc portion. The yarn core is made of nylon polymer fiber, and the outer layer arc portion is made of outer nylon fiber. The elastic yarn body is obtained by blowing ATY yarn with nylon polymer fiber and outer nylon fiber at a blowing ratio of 1:2.5.

[0072] The outer nylon fiber is nylon 56 fiber, and the nylon 56 fiber is in DTY form.

[0073] It should be mentioned that the nylon polymer fiber is obtained by condensation of modified hexamethylenediamine as monomer one and modified pimelic acid as monomer two; and the chemical formula of monomer one is shown below:

[0074] ;

[0075] Where R1 is a chloro group and R2 is a phenyl group.

[0076] To obtain modified hexamethylenediamine, 2-methoxy-5-benzylsulfonylphenyl was reacted with hexamethylenediamine obtained by substitution with R1 and R2 to prepare modified hexamethylenediamine, which will not be elaborated here.

[0077] The chemical formula of monomer two is shown below:

[0078] ;

[0079] Wherein, R is a phenyl group substituted with a chloro group.

[0080] Furthermore, the yarn core is prepared by condensation of modified hexamethylenediamine and modified pimelic acid, and the yarn core specifications are controlled to be 100D / 48F, the morphology is FDY, and the luster is full matte.

[0081] To improve the waterproof performance of this bicomponent nylon elastic yarn, a water-repellent layer is coated on the outside of the elastic yarn body.

[0082] A manufacturing process for a bicomponent nylon elastic yarn fabric includes using an elastic yarn body to produce a bicomponent nylon elastic yarn fabric.

[0083] like Figure 3 , Figure 4 , Figure 5 As shown, the manufacturing process of this bicomponent nylon elastic yarn fabric includes plain weave, checkered or twill weave fabric steps, and obtains the fabric with the corresponding weave pattern.

[0084] Example 4

[0085] The difference between Example 4 and Example 1 is that the elastic yarn body in Example 4 is obtained by blowing ATY yarn with nylon polymer fiber and outer nylon fiber at a blowing ratio of 1:0.8.

[0086] Example 5

[0087] The difference between Example 5 and Example 1 is that the elastic yarn body in Example 5 is obtained by blowing ATY yarn with nylon polymer fiber and outer nylon fiber at a blowing ratio of 1:2.8.

[0088] Comparative Example 1

[0089] The difference between Comparative Example 1 and Example 1 is that the chemical formula of monomer 1 in Comparative Example 1 is as follows:

[0090] ;

[0091] Where R1 is -H; R2 is -H.

[0092] Comparative Example 2

[0093] The difference between Comparative Example 2 and Example 1 is that monomer 1 in Comparative Example 2 is hexamethylenediamine.

[0094] Comparative Example 3

[0095] The difference between Comparative Example 3 and Example 1 is that monomer 2 in Comparative Example 3 is heptanediamine.

[0096] Elastic performance tests were conducted on Examples 1 to 5 and Comparative Examples 1 to 3 above. The specific test methods are as follows:

[0097] ① Elastic elongation:

[0098] a. Take 3 test pieces each in the longitudinal and transverse directions, each measuring 10cm × 15cm;

[0099] b. Using a constant-speed tensile testing machine with an automatic recording device, with clamps spaced 7.6 cm apart, apply an initial load of 29 mN (3 g) to the clamps and fix them in place;

[0100] c. Elongate to 14.7 N (1.5 kg) at a stretching speed of 10 cm / min, measure the clamp spacing at this time (read to 1 / 2 mm), calculate the elongation rate (%) according to the following formula, and express it as the average of 3 pieces in the longitudinal and transverse directions (1 decimal place).

[0101] Elongation (%) = (L1 - L) / L × 100%

[0102] ②Elongation recovery rate:

[0103] a. Take 3 test pieces each in the longitudinal and transverse directions, each measuring 10cm × 15cm;

[0104] b. Using a constant-speed tensile testing machine with an automatic recording device, apply an initial load of 29mN (3g) to the clamps with a clamp spacing of 7.6cm;

[0105] c. Stretch at a speed of 10 cm / min to 80% of the calculated elongation, hold for 1 minute, then return to the original position at the same speed and hold for 3 minutes.

[0106] d. Repeat step (c) 5 times, then stretch it to a load above the initial load at the same speed;

[0107] e. Measure the residual elongation from the recorded load-elongation curve (read to 1 / 2 mm), and calculate the elongation recovery rate (%) according to the following formula. Express the average value of 3 longitudinal and 3 transverse sections (1 decimal place).

[0108] Elongation recovery rate (%) = (L1 - L) / L × 100%

[0109] Where L is the length (mm) recorded in the curve of stretching at 80% elongation, and L1 is the length (mm) recorded in the curve of remaining elongation after 5 repeated stretches.

[0110] Table 1. Elasticity Performance Test Results

[0111]

[0112] As shown in Table 1 above, the bicomponent nylon elastic yarn fabric of this application obtains nylon polymer fibers as the core through a condensation reaction of monomer one and monomer two. The elastic yarn body obtained by blowing ATY yarn with the outer nylon fibers under a set blowing ratio limit will be further processed to obtain the fabric. This will enable the modified hexamethylenediamine and modified pimelic acid with substituted substituent groups to achieve a significant improvement in softness. When ethylenediamine or pimelic acid is used, the softness of the obtained fabric will be significantly reduced, thus affecting the feel of the fabric.

[0113] In summary, this application provides a manufacturing process for a bicomponent nylon elastic yarn and its fabric. The bicomponent nylon elastic yarn is obtained by condensing modified hexamethylenediamine (monomer one) and modified pimelic acid (monomer two) to obtain the elastic yarn body. This increases the stability of the elastic yarn body while enhancing the dyeing temperature of the elastic yarn body through π-bond interaction. This effectively improves dyeing uniformity and elasticity while avoiding the problem of reduced dye uptake, and also provides suitability for high-temperature setting. The manufacturing process of this bicomponent nylon elastic yarn fabric, by using this elastic yarn body to prepare the corresponding fabric, results in a bicomponent nylon elastic yarn fabric with high elasticity, high strength, strong heat resistance, and high stability.

[0114] The terms “first,” “second,” “third,” “fourth,” etc., used in this application (if applicable) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, or apparatus that includes a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, or apparatus.

[0115] It should be noted that the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0116] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A bicomponent nylon elastic yarn, characterized in that: The elastic yarn body comprises a core and an outer arc portion; the core is a nylon polymer fiber, the outer arc portion is an outer nylon fiber, and the outer nylon fiber is nylon 6 fiber, nylon 66 fiber, or nylon 56 fiber; and the elastic yarn body is obtained by blowing ATY yarn with the nylon polymer fiber and the nylon 6 fiber, nylon 66 fiber, or nylon 56 fiber at a blowing ratio of 1:1.2-2.

5. The nylon polymer fiber is obtained by condensation of modified hexamethylenediamine as monomer one and modified pimelic acid as monomer two; and the chemical formula of monomer one is shown below: ； Wherein, R1 is a C2~C8 alkyl, sulfonyl, or halogen; R2 is a phenyl or halogen; The chemical formula of monomer two is shown below: ； Wherein, R is phenyl, alkylphenyl, or halogen-substituted phenyl.

2. The bicomponent nylon elastic yarn according to claim 1, characterized in that: The outer nylon fiber is FDY or DTY.

3. The bicomponent nylon elastic yarn according to claim 1, characterized in that: The yarn core has the following specifications: 20D / 12F, 30D / 24F, 40D / 24F, 50D / 24F, 70D / 48F, 100D / 48F, or 200D / 96F. The yarn core is in the form of FDY or DTY and has a semi-dull or fully dull luster.

4. The bicomponent nylon elastic yarn according to claim 1, characterized in that: The outer side of the elastic yarn body is coated with a water-repellent layer.

5. A manufacturing process for a two-component nylon elastic yarn fabric, characterized in that: This includes obtaining a bicomponent nylon elastic yarn fabric using bicomponent nylon elastic yarn as described in any one of claims 1-4.

6. The process for producing a bicomponent nylon elastic yarn fabric according to claim 5, characterized in that: This includes processes for woven fabrics in plain, checkered, or twill weaves, as well as dyeing, fluorine-free water-repellent, lamination, and layering treatments.

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