Antibacterial moisture-absorption type Tayon fabric and production process thereof

Abstract

The invention relates to the technical field of textiles, and discloses an antibacterial moisture absorption type Tylanon fabric and a production process thereof.The Tylanon fabric is formed by interweaving warp yarns and weft yarns, the warp yarns and the weft yarns are made of composite Tylanon fibers, and the composite Tylanon fibers take bio-based polyamide as a base material and a functional aerogel additive and the like as auxiliary materials; the aerogel additive is prepared through extrusion granulation and melt spinning processes, the aerogel additive has a highly-porous structure and serves as an additive of the Taylor fiber, firstly, the highly-porous structure can contain more moisture, and the structures of the raw materials welan gum and the cross-linking agent contain a large number of hydrophilic functional groups, so that the aerogel additive has good water absorption performance; after the cross-linking agent is added into fibers, the fabric can show an excellent moisture absorption effect, in addition, a pyridine quaternary ammonium salt functional group contained in the cross-linking agent structure has excellent broad-spectrum antibacterial performance, and the fabric can also be endowed with a good antibacterial effect.

Description

Technical Field

[0001] The present invention relates to the technical field of textiles, in particular to an antibacterial and moisture-absorbing Tailon fabric and a production process thereof. Background Art

[0002] Tylon is a new type of fiber made from renewable plant resources such as corn and straw. Its raw materials are bio-based with a content of up to 45%-100%. This characteristic makes it a green alternative to traditional petroleum-based polyamide fibers (such as PA6 and PA66), not only reducing dependence on fossil resources but also achieving a low-carbon production process. Moreover, because Tylon fiber retains the active ingredients of natural fibers to the greatest extent possible, its touch is close to that of natural materials such as cotton and linen, and it is very comfortable to wear. In addition, Tylon fiber also has good low-temperature dyeability and flame retardant properties, thus showing significant environmental benefits and performance advantages in the textile field.

[0003] While tylon exhibits excellent properties, its antibacterial and moisture-absorbing properties still require further optimization in specific applications. For example, in close-fitting sportswear, sweat is produced during exercise, which keeps the skin moist and prone to bacterial growth, leading to odor, mildew, and even health risks, directly impacting the wearer's health. This has significantly hindered the application of tylon in the textile fabric sector.

[0004] Based on this, it is of great significance to modify the antibacterial and hygroscopic properties of Tylon for its further application. Summary of the Invention

[0005] In order to solve the problems mentioned in the background technology, the purpose of the present invention is to provide an antibacterial and moisture-absorbing Thailon fabric and a production process thereof.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] An antibacterial and moisture-absorbing Thailon fabric, formed by interlacing warp yarns and weft yarns; the warp yarns and weft yarns are both made of composite Thailon fibers;

[0008] The composite Tailon fiber comprises the following raw materials in parts by weight:

[0009] 75-90 parts of bio-based polyamide, 2-6.5 parts of functional aerogel additive, and 0.5-1.5 parts of antioxidant.

[0010] As a further embodiment of the present invention, the preparation method of the functional aerogel additive comprises the following steps:

[0011] Step 1: add welan gum to the ethanol aqueous solution, stir until a uniform solution is formed, then add the functional crosslinker and catalyst to the solution, stir evenly after addition, then increase the temperature to 50-60°C, keep stirring for 6-12 hours, and then stop heating to form a precursor;

[0012] Step 2: Pour the precursor into a mold, let it stand for 1-3 hours, and then freeze-dry it in a freeze dryer to obtain the aerogel additive.

[0013] As a further embodiment of the present invention, the volume fraction of the ethanol aqueous solution is 50-70%.

[0014] As a further embodiment of the present invention, the preparation method of the functional cross-linking agent is as follows:

[0015] Add 2,5-di(pyridin-4-yl)terephthalic acid and toluene to a reactor filled with nitrogen, start stirring until the mixture is uniform, then add the halogenated alkane to the reactor, start heating, wait for the temperature to rise to 60-70°C, keep warm for 4-8 hours, remove the solvent by rotary evaporation, cool and discharge, and undergo purification and post-treatment to obtain a functional cross-linking agent.

[0016] As a further embodiment of the present invention, the molar ratio of the 2,5-di(pyridin-4-yl)terephthalic acid to the halogenated alkane is 1:1-2.

[0017] As a further embodiment of the present invention, the halogenated alkane is any one of n-butane bromide, n-octane bromide, n-decane bromide or n-dodecane bromide.

[0018] As a further embodiment of the present invention, the catalyst is a mixture of 4-dimethylaminopyridine and dicyclohexylcarbodiimide in a mass ratio of 0.2-0.4:1.

[0019] Specifically, under the action of the catalyst, the active hydroxyl functional groups in the structure of the wellan gum can undergo continuous condensation reactions with the active carboxyl substituents in the functional cross-linker structure, thereby achieving cross-linking of the wellan gum to form a cross-linked modified wellan gum. Then, through a freeze-drying process, it is made into an aerogel-type structure with a high porosity structure to obtain an aerogel additive.

[0020] Among them, the functional crosslinker is prepared by quaternization reaction of 2,5-di(pyridin-4-yl)terephthalic acid and halogenated alkane as reactants. Since its structure contains two equivalents of active carboxyl substituents, it can act as a crosslinker for Welan gum and achieve crosslinking modification of Welan gum.

[0021] As a further embodiment of the present invention, the preparation method of the composite tyron fiber is as follows:

[0022] Step S1: Prepare all raw materials according to their weight, add them into a mixer, stir and mix them evenly, transfer them into a twin-screw extruder, and form masterbatch by melt extrusion;

[0023] Step S2: melt-spinning the masterbatch using a melt spinning process, and then performing draft spinning, winding, collective drafting, and thermoforming processes to obtain composite tyron fiber.

[0024] As a further embodiment of the present invention, the antioxidant is at least one of lignin, antioxidant 1010, antioxidant 1076 or antioxidant 168.

[0025] A production process of antibacterial and moisture-absorbing Tailon fabric comprises the following steps:

[0026] The first step is to twist 3-5 composite tylon fibers into strands to make warp yarn and weft yarn respectively;

[0027] The second step is to weave the warp yarn and weft yarn alternately, control the warp yarn density to 20-30 strands / cm, and the weft yarn density to 15-25 strands / cm, and weave them into fabric.

[0028] Beneficial effects of the present invention:

[0029] The present invention prepares an aerogel additive with a highly porous structure as an additive for tylon fiber. Firstly, the presence of the highly porous structure can accommodate more water, and both the raw material welan gum and the cross-linking agent structure contain a large number of hydrophilic functional groups, so they have good water absorption properties. After being added to the fiber, the fabric can exhibit excellent moisture absorption effect. In addition, the pyridinium quaternary ammonium salt functional group contained in the cross-linking agent structure has excellent broad-spectrum antibacterial properties and can also give the fabric a good antibacterial effect.

[0030] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 This is a scanning electron microscope image of aerogel additives. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] Example 1

[0035] Preparation of composite tyron fiber:

[0036] Step S1: adding 75 parts of bio-based polyamide, 2 parts of functional aerogel additive, and 0.5 parts of antioxidant 1010 to a mixer according to weight, stirring and mixing, and then transferring to a twin-screw extruder to form a masterbatch by melt extrusion;

[0037] Step S2: Using a melt spinning process, controlling the spinning temperature to 260°C, the drawing multiple to 3 times, and the spinning speed to 100 m / min, the masterbatch is melt-spun, and then the composite tyron fiber is obtained through a drawing spinning, winding, collective drawing, and thermoforming process.

[0038] The bio-based polyamide is selected from Shanghai Cathay Biotechnology Co., Ltd., with the brand name E-1273, and the same applies to the following.

[0039] The functional aerogel additive is prepared by the following method:

[0040] Step 1: Add 1.8 g of welan gum to a 70% volume fraction of ethanol aqueous solution, stir until a uniform solution is formed, then add 0.5 g of a functional crosslinker, 0.1 g of 4-dimethylaminopyridine and 0.5 g of dicyclohexylcarbodiimide to the solution, stir evenly after addition, then raise the temperature to 50 ° C, keep stirring for 9 hours, and then stop heating to form a precursor;

[0041] Step 2: Pour the precursor into a mold, let it stand for 2 hours, and then freeze-dry it in a freeze dryer to obtain the aerogel additive.

[0042] Figure 1 This is a scanning electron microscope image of the aerogel additive. From the image, it can be observed that it has a rich pore structure, which can store and accommodate a large amount of water, absorb sweat, and thus improve the moisture absorption performance of the fabric.

[0043] The preparation method of the functional cross-linking agent is as follows:

[0044] Add 0.2 g of 2,5-di(pyridin-4-yl)terephthalic acid and toluene to a reactor filled with nitrogen, start stirring until the mixture is uniform, then add 0.3 g of brominated n-dodecane to the reactor, and after the addition is completed, turn on the heating, wait until the temperature rises to 65°C, keep the temperature for 6 hours, remove the solvent by rotary evaporation, cool the material, and after purification and post-treatment, a functional cross-linking agent can be obtained.

[0045] Example 2

[0046] Preparation of composite tyron fiber:

[0047] Step S1: Add 80 parts of bio-based polyamide, 6 parts of functional aerogel additive, and 1 part of antioxidant 1076 to a mixer according to weight, stir and mix them evenly, transfer them to a twin-screw extruder, and form a masterbatch by melt extrusion;

[0048] Step S2: Using a melt spinning process, controlling the spinning temperature to 270°C, the drawing multiple to 3 times, and the spinning speed to 100 m / min, the masterbatch is melt-spun, and then the composite tyron fiber is obtained through a drawing spinning, winding, collective drawing, and thermoforming process.

[0049] The preparation method of the functional aerogel additive is the same as that in Example 1.

[0050] Example 3

[0051] Preparation of composite tyron fiber:

[0052] Step S1: adding 90 parts of bio-based polyamide, 6.5 parts of functional aerogel additive, and 1.5 parts of antioxidant 168 to a mixer according to weight, stirring and mixing, and then transferring to a twin-screw extruder to form a masterbatch by melt extrusion;

[0053] Step S2: Using a melt spinning process, controlling the spinning temperature to 280°C, the drawing multiple to 3 times, and the spinning speed to 100 m / min, the masterbatch is melt-spun, and then the composite tyron fiber is obtained through a drawing spinning, winding, collective drawing, and thermoforming process.

[0054] The preparation method of the functional aerogel additive is the same as that in Example 1.

[0055] Comparative Example 1

[0056] Preparation of composite tyron fiber:

[0057] Step S1: Add 80 parts by weight of bio-based polyamide and 1 part of antioxidant 1076 into a mixer, stir and mix until evenly mixed, transfer to a twin-screw extruder, and melt-extrude to form a masterbatch;

[0058] Step S2: Using a melt spinning process, controlling the spinning temperature to 270°C, the drawing multiple to 3 times, and the spinning speed to 100 m / min, the masterbatch is melt-spun, and then the composite tyron fiber is obtained through a drawing spinning, winding, collective drawing, and thermoforming process.

[0059] Test Case

[0060] An antibacterial and moisture-absorbing Tailon fabric was prepared using the composite Tailon fibers in Examples 1 to 3 and Comparative Example 1. The specific preparation method is as follows:

[0061] The first step is to twist 5 composite tylon fibers into strands to make warp yarn and weft yarn respectively;

[0062] The second step is to weave the warp yarn and weft yarn alternately, control the warp yarn density to 25 strands / cm, and the weft yarn density to 20 strands / cm, and weave them into fabric.

[0063] ① Cut each group of fabrics into 4cm×4cm samples, weigh them, and record them as W. Then soak each sample in water for 3 hours, remove it, drain it until no more water drips out, and weigh it again, record it as m. Calculate the water absorption rate of the sample using the formula (mW) / W.

[0064] ② Prepare the samples of each group into test samples with a diameter of 10 mm and place them on the surface of the culture medium coated with Staphylococcus aureus suspension. The concentration of the suspension was controlled at 10 5 CFU / mL, after incubation at 37°C for 12 hours, the cells were taken out and the diameter of the inhibition zone was measured. The results are shown in the table below:

[0065] Group Water absorption rate / g / g Inhibition zone diameter / mm Example 1 126.4 15.7 Example 2 127.1 16.3 Example 3 126.9 16.2 Comparative Example 1 90.5 8.9

[0066] The test results show that the Tailon fabric made of fibers added with functional aerogel additives has significantly better water absorption and antibacterial effects.

[0067] Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core ideas, including the best mode, and also enable any technician in the field to practice the present invention, including making and using any device or system, and implementing any combined method. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention. The scope of patent protection of the present invention is defined by the claims and may include other embodiments that can be thought of by those skilled in the art. If these other embodiments have structural elements similar to the literal description of the claims, or if they include equivalent structural elements that are not substantially different from the literal description of the claims, then these other embodiments should also be included in the scope of the claims.

[0068] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An antibacterial and moisture-absorbing Tailon fabric, characterized in that: It is formed by interlacing warp yarns and weft yarns; both the warp yarns and weft yarns are made of composite tyron fibers; The composite Tailon fiber comprises the following raw materials in parts by weight: 75-90 parts of bio-based polyamide, 2-6.5 parts of functional aerogel additive, and 0.5-1.5 parts of antioxidant.

2. The antibacterial and moisture-absorbing Tailon fabric according to claim 1, characterized in that: The preparation method of the functional aerogel additive comprises the following steps: Step 1: add welan gum to the ethanol aqueous solution, stir until a uniform solution is formed, then add the functional crosslinker and catalyst to the solution, stir evenly after addition, then increase the temperature to 50-60°C, keep stirring for 6-12 hours, and then stop heating to form a precursor; Step 2: Pour the precursor into a mold, let it stand for 1-3 hours, and then freeze-dry it in a freeze dryer to obtain a functional aerogel additive.

3. The antibacterial and moisture-absorbing Tailon fabric according to claim 2, characterized in that: The volume fraction of the ethanol aqueous solution is 50-70%.

4. The antibacterial and moisture-absorbing Tailon fabric according to claim 2, characterized in that: The preparation method of the functional cross-linking agent is as follows: Add 2,5-di(pyridin-4-yl)terephthalic acid and toluene to a reactor filled with nitrogen, start stirring until the mixture is uniform, then add the halogenated alkane to the reactor, start heating, wait for the temperature to rise to 60-70°C, keep warm for 4-8 hours, remove the solvent by rotary evaporation, cool and discharge, and undergo purification and post-treatment to obtain a functional cross-linking agent.

5. The antibacterial and moisture-absorbing Tailon fabric according to claim 4, characterized in that: The molar ratio of the 2,5-di(pyridin-4-yl)terephthalic acid to the halogenated alkane is 1:1-2.

6. The antibacterial and moisture-absorbing Tailon fabric according to claim 2, characterized in that: The halogenated alkane is any one of n-butyl bromide, n-octane bromide, n-decane bromide or n-dodecane bromide.

7. The antibacterial and moisture-absorbing Tailon fabric according to claim 2, characterized in that: The catalyst is a mixture of 4-dimethylaminopyridine and dicyclohexylcarbodiimide, with a mass ratio of 0.2-0.4:

1.

8. The antibacterial and moisture-absorbing Tailon fabric according to claim 7, characterized in that: The preparation method of the composite Tailon fiber is as follows: Step S1: Prepare all raw materials according to their weight, add them into a mixer, stir and mix them evenly, transfer them into a twin-screw extruder, and form masterbatch by melt extrusion; Step S2: melt-spinning the masterbatch using a melt spinning process, and then performing draft spinning, winding, collective drafting, and thermoforming processes to obtain composite tyron fiber.

9. The antibacterial and moisture-absorbing Tailon fabric according to claim 1, characterized in that: The antioxidant is at least one of lignin, antioxidant 1010, antioxidant 1076 or antioxidant 168.

10. A production process of the antibacterial and moisture-absorbing Tailon fabric according to claim 1, characterized in that: The following steps are involved: The first step is to twist 3-5 composite tylon fibers into strands to make warp yarn and weft yarn respectively; The second step is to weave the warp yarn and weft yarn alternately, control the warp yarn density to 20-30 strands / cm, and the weft yarn density to 15-25 strands / cm, and weave them into fabric.

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