A deformation-resistant, high-gloss textile fabric and its preparation process

Abstract

This invention relates to the field of fabric technology and discloses a high-gloss, deformation-resistant textile fabric and its preparation process. The fabric is formed by interlacing warp and weft yarns, wherein the warp yarns are spandex filaments and the weft yarns are polyester composite fibers. The polyester composite fibers are obtained by melt spinning using polyester fiber chips, modified potassium titanate whiskers, and antioxidants. The modified potassium titanate whiskers are obtained by modifying the surface of potassium hexatite whiskers with a macromolecular modifier having a polysulfide rubber-phenyl adamantane block alternating linkage structure. This modifier is used as an additive to reinforce the polyester fibers. By utilizing the advantages of potassium titanate whiskers and macromolecular modifiers, the breaking strength, elongation, and elastic recovery rate of the polyester fibers are improved, thereby giving the prepared fabric good deformation resistance. By selecting spandex and polyester, the prepared fabric can also have high gloss characteristics.

Description

Technical Field

[0001] This invention relates to the field of fabric technology, specifically to a deformation-resistant, high-gloss textile fabric and its preparation process. Background Technology

[0002] In the textile industry, resistance to deformation and high gloss are key indicators for measuring product quality and added value. The former relates to the fabric's durability and practicality, while the latter directly affects visual appeal and market competitiveness. With the continuous upgrading of materials science, textile technology, and consumer demands, deformation-resistant and high-gloss textile fabrics are becoming the core development direction for high-end apparel, home décor, and industrial textiles through synergistic breakthroughs in fiber innovation, structural design, and finishing technologies.

[0003] Currently, most fabrics use synthetic fibers. Among them, spandex has good elasticity, high comfort, and strong chemical corrosion resistance, and is often used to make sportswear. However, it has low gloss and is easy to break when used alone, and its production cost is relatively high. Therefore, in practical applications, it is generally necessary to blend it with other fibers. Polyester fiber has high gloss and can be used as one of the options for blending with spandex. By utilizing the advantages of each other, a complementary advantage can be formed, and composite fabrics with excellent performance can be produced.

[0004] However, polyester fibers have poor resistance to deformation. Under high-frequency stretching and pulling, they will deform, making it difficult to match the high elasticity of spandex, which affects the service life of the fabric. Summary of the Invention

[0005] In order to solve the problems mentioned in the background art, the purpose of this invention is to provide a deformation-resistant and high-gloss textile fabric and its preparation process.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A deformation-resistant, high-gloss textile fabric is formed by interlacing warp and weft yarns; the warp yarns are spandex filaments; the weft yarns are polyester composite fibers; the polyester composite fibers comprise the following raw materials measured by weight:

[0008] 35-45 parts polyester fiber chips, 1-3.5 parts modified potassium titanate whiskers, 0.5-1 part antioxidant, and 1-2 parts lubricant.

[0009] As a further aspect of the present invention, the method for preparing the polyester composite fiber includes the following steps:

[0010] Step 1: According to the weight proportions, add polyester fiber chips, modified potassium titanate whiskers, antioxidants and lubricants to a high-speed mixer and mix evenly. Then feed the mixture into a twin-screw extruder through a feed hopper and obtain masterbatch through melt extrusion process. Then spin the masterbatch through melt spinning process to obtain fiber feedstock.

[0011] Step 2: The fiber pre-material is drawn and spun, and then wound, shaped, bundled and drawn and heat-set.

[0012] As a further aspect of the present invention, the method for preparing the modified potassium titanate whiskers includes the following steps:

[0013] Step S1: Add potassium hexatite whiskers to a 70% (v / v) ethanol aqueous solution, sonicate until a uniform dispersion is formed, then add a coupling agent to the dispersion, hydrolyze at 50-60℃ for 1-2 hours, then raise the temperature to 60-70℃ and keep it at that temperature for 4-8 hours, then cool down and discharge the material to obtain organic potassium hexatite whiskers.

[0014] Step S2: Disperse organic potassium hexatitanate whiskers ultrasonically in N,N-dimethylformamide, then add 2,2-bis(4-hydroxyphenyl)adamantane, stir well, and continue to add catalyst. After the addition is complete, raise the temperature to 70-80℃ and keep it at that temperature for 2-4 hours. Then add halogen-terminated polysulfide rubber and raise the temperature to 90-100℃. Continue chain extension polymerization for 12-18 hours, stop heating, cool down and discharge the material to obtain modified potassium titanate whiskers.

[0015] As a further aspect of the present invention, in step S1, the coupling agent is 3-chloropropyltrimethoxysilane, 3-chloropropyltriethoxysilane, or 3-bromopropyltrimethoxysilane.

[0016] As a further aspect of the present invention, in step S2, the catalyst is an aqueous solution of sodium hydroxide or an aqueous solution of potassium hydroxide.

[0017] As a further aspect of the present invention, in step S2, the preparation method of the halogen-terminated polysulfide rubber is as follows:

[0018] Liquid polysulfide rubber, halogenated isocyanate, and xylene are added to a nitrogen-filled reactor. After the addition is complete, stirring is started until a homogeneous reaction solution is formed. Then, tin catalyst is added to the reactor, the temperature is raised to 70-80℃, and stirring is carried out for 4-8 hours. The nitrogen gas is then removed, the solvent is removed by rotary evaporation, the product is collected, and after purification, halogen-terminated polysulfide rubber can be obtained.

[0019] As a further embodiment of the present invention, the haloisocyanate is chloroethyl isocyanate or 3-chloropropyl isocyanate.

[0020] As a further embodiment of the present invention, the tin catalyst is any one of stannous octoate, dibutyltin dilaurate, or dibutyltin diacetate.

[0021] In the above technical solution, potassium hexatitanate whiskers are first modified with a silane coupling agent to obtain organic potassium hexatitanate whiskers with halogen substituents on the surface. Then, 2,2-bis(4-hydroxyphenyl)adamantane is used as a crosslinking agent. The phenolic hydroxyl group at one end of its structure can replace the halogen substituents of the organic potassium hexatitanate whiskers under the action of a catalyst, and the phenolic hydroxyl group at the other end can replace the halogen-terminated polysulfide rubber. The 2,2-bis(4-hydroxyphenyl)adamantane that does not participate in the reaction in the system can undergo a continuous substitution reaction with the halogen-terminated polysulfide rubber, thereby modifying the surface of potassium hexatitanate whiskers with a macromolecular modifier with an alternating block linkage structure of polysulfide rubber-phenyladamantane, thus obtaining modified potassium titanate whiskers.

[0022] Halogen-terminated polysulfide rubber is prepared by reacting the active thiol functional groups in the structure of liquid polysulfide rubber and halogenated isocyanate with the isocyanate functional groups under the action of a tin catalyst.

[0023] As a further aspect of the present invention, the antioxidant is at least one of antioxidant 1010, antioxidant 168, or antioxidant 1076; and the lubricant is polyethylene wax.

[0024] A process for preparing a deformation-resistant, high-gloss textile fabric includes the following steps:

[0025] Step 1: Twist 3-5 spandex filaments into a ply to form the warp yarn;

[0026] The second step is to twist 3-5 polyester composite fibers into strands to make weft yarn;

[0027] The third step is to interweave the warp and weft yarns, controlling the warp density to be 25-30 strands / cm and the weft density to be 20-25 strands / cm.

[0028] The beneficial effects of this invention are:

[0029] This invention modifies potassium titanate whiskers by modifying the surface of potassium hexatate whiskers with a polysulfide rubber-phenyl adamantane block alternating linkage structure, thus obtaining modified potassium titanate whiskers. These whiskers are then used as an additive to reinforce polyester fibers. Firstly, the macromolecular modifier contains benzene rings, which can form π-π conjugations with the benzene rings in the PET molecular chain. Therefore, during melt extrusion, they form an intertwined network of molecular chains. The potassium hexatate whiskers exist as the core of this network within the composite fiber, efficiently utilizing their own whisker-like pulling effect while simultaneously transferring and dispersing stress, thereby improving the tensile strength and elongation of the polyester fiber. Secondly, the polysulfide rubber in the macromolecular modifier enhances the elasticity of the polyester fiber, allowing it to rebound rapidly under external force, improving the fiber's elastic recovery rate, and thus giving the prepared fabric excellent resistance to deformation.

[0030] This invention uses high-gloss polyester composite fiber as the weft yarn of the fabric, which enables the prepared fabric to have high-gloss characteristics.

[0031] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Detailed Implementation

[0032] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1

[0034] Preparation of polyester composite fibers:

[0035] Step 1: By weight, add 35 parts polyester fiber chips, 1 part modified potassium titanate whiskers, 0.5 parts antioxidant 1010, and 1 part lubricant polyethylene wax to a high-speed mixer and mix evenly. Then, feed the mixture into a twin-screw extruder through a feed hopper. Control the temperature at 250℃ and the screw speed at 120 rpm for melt extrusion to obtain masterbatch. Then, melt spin the masterbatch using a melt spinning process, controlling the spinning temperature at 280℃, the traction ratio at 3 times, and the spinning speed at 200 m / min to obtain fiber pre-material.

[0036] Step 2: The fiber pre-material is drawn and spun, and then wound, shaped, bundled and drawn and heat-set.

[0037] The method for preparing the modified potassium titanate whiskers includes the following steps:

[0038] Step S1: Add 3.5g of potassium hexatitanate whiskers to a 70% (v / v) ethanol aqueous solution and sonicate until a uniform dispersion is formed. Then add 1.8g of 3-chloropropyltriethoxysilane to the dispersion, hydrolyze at 55°C for 2 hours, then raise the temperature to 65°C and keep it at that temperature for 6 hours. Cool down and discharge the material to obtain organic potassium hexatitanate whiskers.

[0039] Step S2: 1.5g of organic potassium hexatitanate whiskers were ultrasonically dispersed in N,N-dimethylformamide, followed by the addition of 8g of 2,2-bis(4-hydroxyphenyl)adamantane. After stirring, 10mL of 20% sodium hydroxide aqueous solution was added. After the addition was complete, the temperature was raised to 75℃ and kept at that temperature for 3h. Then, 5g of halogen-terminated polysulfide rubber was added, and the temperature was raised to 100℃. Chain extension polymerization was continued for 16h. Heating was stopped, the temperature was lowered, and the material was discharged to obtain modified potassium titanate whiskers.

[0040] 0.2g of modified potassium titanate whiskers was weighed as the sample to be tested, and the sulfur content was tested using an organic elemental analyzer. The test results showed that the sulfur content was 5.14%.

[0041] The preparation method of halogen-terminated polysulfide rubber is as follows:

[0042] Add 0.5g of LP-3 type liquid polysulfide rubber, 0.03g of chloroethyl isocyanate and xylene to a nitrogen-filled reactor. After the addition is complete, start stirring until a homogeneous reaction solution is formed. Then add 0.01g of dibutyltin dilaurate to the reactor, raise the temperature to 75℃, stir for 6 hours, remove the nitrogen, remove the solvent by rotary evaporation, collect the product, and purify it to obtain halogen-terminated polysulfide rubber.

[0043] Example 2

[0044] Preparation of polyester composite fibers:

[0045] Step 1: By weight, add 38 parts polyester fiber chips, 3 parts modified potassium titanate whiskers, 0.6 parts antioxidant 1076, and 1.5 parts lubricant polyethylene wax to a high-speed mixer and mix evenly. Then, feed the mixture into a twin-screw extruder through a feed hopper. Control the temperature at 250℃ and the screw speed at 120 rpm for melt extrusion to obtain masterbatch. Then, melt spin the masterbatch using a melt spinning process, controlling the spinning temperature at 280℃, the traction ratio at 3 times, and the spinning speed at 200 m / min to obtain fiber pre-material.

[0046] Step 2: The fiber pre-material is drawn and spun, and then wound, shaped, bundled and drawn and heat-set.

[0047] The preparation method of the modified potassium titanate whiskers is the same as that in Example 1.

[0048] Example 3

[0049] Preparation of polyester composite fibers:

[0050] Step 1: By weight, add 45 parts polyester fiber chips, 3.5 parts modified potassium titanate whiskers, 1 part antioxidant 168, and 2 parts lubricant polyethylene wax to a high-speed mixer and mix evenly. Then, feed the mixture into a twin-screw extruder through a feed hopper. Control the temperature at 250℃ and the screw speed at 120 rpm for melt extrusion to obtain masterbatch. Then, melt spin the masterbatch using a melt spinning process, controlling the spinning temperature at 280℃, the traction ratio at 3 times, and the spinning speed at 200 m / min to obtain fiber pre-material.

[0051] Step 2: The fiber pre-material is drawn and spun, and then wound, shaped, bundled and drawn and heat-set.

[0052] The preparation method of the modified potassium titanate whiskers is the same as that in Example 1.

[0053] Comparative Example 1

[0054] Preparation of polyester composite fibers:

[0055] Step 1: By weight, add 38 parts polyester fiber chips, 3 parts potassium hexatitanate whiskers, 0.6 parts antioxidant 1076, and 1.5 parts lubricant polyethylene wax to a high-speed mixer and mix evenly. Then, feed the mixture into a twin-screw extruder through a feed hopper. Control the temperature at 250℃ and the screw speed at 120 rpm for melt extrusion to obtain masterbatch. Then, melt spin the masterbatch using a melt spinning process, controlling the spinning temperature at 280℃, the traction ratio at 3 times, and the spinning speed at 200 m / min to obtain fiber pre-material.

[0056] Step 2: The fiber pre-material is drawn and spun, and then wound, shaped, bundled and drawn and heat-set.

[0057] Comparative Example 2

[0058] Preparation of polyester composite fibers:

[0059] Step 1: By weight, add 38 parts polyester fiber chips, 0.6 parts antioxidant 1076, and 1.5 parts lubricant polyethylene wax to a high-speed mixer and mix evenly. Then, feed the mixture into a twin-screw extruder through a feed hopper. Control the temperature at 250℃ and the screw speed at 120 rpm for melt extrusion to obtain masterbatch. Then, melt spin the masterbatch using a melt spinning process, controlling the spinning temperature at 280℃, the traction ratio at 3 times, and the spinning speed at 200 m / min to obtain fiber pre-material.

[0060] Step 2: The fiber pre-material is drawn and spun, and then wound, shaped, bundled and drawn and heat-set.

[0061] Performance testing

[0062] According to standard GB / T 14344-2008, the fracture strength and elongation at break were tested.

[0063] Elastic recovery rate test was performed according to standard ASTM D3107;

[0064] The test results are shown in the table below:

[0065] project Fracture strength / cN / dtex Elongation at break / % Elastic recovery rate / % Example 1 4.1 33.4 95.9 Example 2 4.4 34.5 96.6 Example 3 4.3 34.3 96.4 Comparative Example 1 3.6 28.8 81.3 Comparative Example 2 2.1 19.8 81.1

[0066] Analysis of the test results shows that polyester composite fibers made with modified potassium titanate whiskers as additives have significantly better comprehensive properties such as deformation resistance. However, when potassium hexatitanate whiskers without surface modification are used directly as additives, it is difficult to form a good interface with the PET matrix, which prevents them from fully exerting their advantages and from carrying out efficient stress transfer and dispersion, resulting in a significant decline in various properties of the fiber.

[0067] A deformation-resistant, high-gloss textile fabric was prepared using the polyester composite fiber from Example 2. The specific method is as follows:

[0068] A process for preparing a deformation-resistant, high-gloss textile fabric includes the following steps:

[0069] Step 1: Twist 5 spandex filaments into a ply to form the warp yarn;

[0070] The second step is to twist the five polyester composite fibers into strands to make weft yarn.

[0071] The third step is to interweave the warp and weft yarns, controlling the warp density to be 30 strands / cm and the weft density to be 25 strands / cm.

[0072] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of these embodiments are merely to aid in understanding the method and core ideas of the present invention, including the best mode, and to enable any person skilled in the art to practice the present invention, including manufacturing and using any device or system, and implementing any combined method. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims. The scope of protection of this patent is defined by the claims and may include other embodiments that can be conceived by those skilled in the art. If these other embodiments have structural elements similar to those expressed in the claims, or if they include equivalent structural elements that are not substantially different from those expressed in the claims, then these other embodiments should also be included within the scope of the claims.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A deformation-resistant, high-gloss textile fabric, characterized in that, It is formed by interlacing warp and weft yarns; the warp yarns are spandex filaments; the weft yarns are polyester composite fibers; the polyester composite fibers comprise the following raw materials measured by weight: 35-45 parts polyester fiber chips, 1-3.5 parts modified potassium titanate whiskers, 0.5-1 part antioxidant, and 1-2 parts lubricant; The method for preparing the modified potassium titanate whiskers includes the following steps: Step S1: Modify potassium hexatitanate whiskers with an organic coupling agent to obtain organic potassium hexatitanate whiskers. Step S2: Using N,N-dimethylformamide as the reaction medium, under the action of a catalyst, the organic potassium hexatitanate whiskers are first further modified with 2,2-bis(4-hydroxyphenyl)adamantane. Then, halogen-terminated polysulfide rubber is used as a chain extender to carry out a continuous chain extension polymerization reaction to obtain modified potassium titanate whiskers. The halogen-terminated polysulfide rubber is prepared by reacting liquid polysulfide rubber and haloisocyanate as raw materials under the catalysis of a tin catalyst.

2. The deformation-resistant, high-gloss textile fabric according to claim 1, characterized in that, The preparation method of the polyester composite fiber includes the following steps: Step 1: According to the weight proportions, add polyester fiber chips, modified potassium titanate whiskers, antioxidants and lubricants to a high-speed mixer and mix evenly. Then feed the mixture into a twin-screw extruder through a feed hopper and obtain masterbatch through melt extrusion process. Then spin the masterbatch through melt spinning process to obtain fiber feedstock. Step 2: The fiber pre-material is drawn and spun, and then wound, shaped, bundled and drawn and heat-set.

3. The deformation-resistant, high-gloss textile fabric according to claim 1, characterized in that, In step S1, the coupling agent is 3-chloropropyltrimethoxysilane, 3-chloropropyltriethoxysilane, or 3-bromopropyltrimethoxysilane.

4. The deformation-resistant, high-gloss textile fabric according to claim 1, characterized in that, In step S2, the catalyst is an aqueous solution of sodium hydroxide or an aqueous solution of potassium hydroxide.

5. The deformation-resistant, high-gloss textile fabric according to claim 1, characterized in that, The haloisocyanate is chloroethyl isocyanate or 3-chloropropyl isocyanate.

6. The deformation-resistant, high-gloss textile fabric according to claim 1, characterized in that, The tin catalyst is any one of stannous octoate, dibutyltin dilaurate, or dibutyltin diacetate.

7. The deformation-resistant, high-gloss textile fabric according to claim 2, characterized in that, The antioxidant is at least one of antioxidant 1010, antioxidant 168, or antioxidant 1076; the lubricant is polyethylene wax.

8. A process for preparing a deformation-resistant, high-gloss textile fabric as described in claim 1, characterized in that, Includes the following steps: Step 1: Twist 3-5 spandex filaments into a ply to form the warp yarn; The second step is to twist 3-5 polyester composite fibers into strands to make weft yarn; The third step is to interweave the warp and weft yarns, controlling the warp density to be 25-30 strands / cm and the weft density to be 20-25 strands / cm.