Flame-retardant functional fabric containing basalt fibers and manufacturing method of flame-retardant functional fabric

Abstract

The invention relates to the technical field of textile, in particular to a flame-retardant functional fabric containing basalt fiber and a manufacturing method thereof.The flame-retardant functional fabric is formed by weaving cotton fiber, basalt fiber and flame-retardant fiber, the flame-retardant fiber is prepared from polyethylene glycol terephthalate as a main raw material and a flame retardant, a photoinitiator and the like as auxiliary materials, and the flame-retardant functional fabric is formed by weaving cotton fiber, basalt fiber and flame-retardant fiber. Polymerization is initiated through ultraviolet irradiation, finally, extrusion, wire drawing and forming are conducted, the prepared fabric is tie-dyed through antibacterial finishing liquid and dried, and finally the flame-retardant functional fabric is prepared. In the preparation process, a compound containing P and F elements and modified nano titanium dioxide are added, so that the fabric is excellent in flame retardance and antibacterial performance, meanwhile, hydrogen bonds are formed among molecules in the tie-dyeing process of antibacterial finishing liquid, the acting force among the molecules is increased, and the washing resistance is improved.

Description

Technical Field

[0001] This invention relates to the field of textile technology, specifically to a flame-retardant functional fabric containing basalt fibers and its manufacturing method. Background Technology

[0002] In modern society, fire safety requirements in various settings are becoming increasingly stringent. Flame-retardant fabrics, as crucial fire-resistant materials, directly impact the safety of life and property. Traditional flame-retardant fabrics have revealed numerous shortcomings when facing complex environments and demanding scenarios. While some organic fiber-based flame-retardant fabrics possess a certain degree of flame retardancy, they are prone to decomposition at high temperatures, producing toxic gases, and their temperature resistance is poor, making them unsuitable for prolonged exposure to high temperatures. Basalt fiber, a novel inorganic non-metallic fiber, has garnered significant attention in the materials field in recent years. Made from natural basalt through high-temperature melting and drawing processes, it possesses excellent flame-retardant properties. Furthermore, it also boasts advantages such as good electrical insulation, radiation resistance, aging resistance, and non-toxicity, making it environmentally friendly.

[0003] Although basalt fiber fabrics have many advantages, they still face multiple challenges in practical applications. In humid environments, the surface of basalt fiber fabrics easily becomes a breeding ground for bacteria and mold, especially in the context of underwear, which may lead to odor, skin allergies, and even an increased risk of cross-infection. The insufficient antibacterial properties of basalt fiber fabrics limit their application in high-end functional fields.

[0004] Currently, there is an urgent need in the market for a functional fabric with excellent flame retardant and antibacterial properties to meet the needs of many fields. Summary of the Invention

[0005] The purpose of this invention is to provide a flame-retardant functional fabric containing basalt fibers and its manufacturing method.

[0006] The objective of this invention can be achieved through the following technical solutions: A method for manufacturing a flame-retardant functional fabric containing basalt fibers, characterized by comprising the following steps: Step 1: Twist 3-5 basalt fibers and flame-retardant fibers into strands to form the warp, and twist 3-5 cotton fibers into strands to form the weft. The warp and weft are interwoven to form the fabric, thus obtaining the main body fabric. Step 2: Immerse the main fabric in the antibacterial finishing solution and pad dye for 30-50 minutes, then dry at 75-80℃ for 2-3 hours to obtain the final product.

[0007] Further, the flame-retardant fiber comprises the following raw materials in parts by weight: 40-60 parts polyethylene terephthalate, 5-10 parts 2-fluoroacrylic acid, 1-2 parts m-cresol, 10-15 parts flame retardant, 1-3 parts photoinitiator, 70-80 parts acetone, 20-30 parts tetrahydrofuran, and 1-2 parts di-tert-butyl-p-cresol.

[0008] Furthermore, the method for preparing the modified polyethylene terephthalate includes the following steps: Step SS1: Add m-cresol to polyethylene terephthalate, heat to 60-70℃, swell for 2-3 hours, remove, wash with ethanol, and dry to obtain swollen polyethylene terephthalate. Step SS2: Immerse the swollen polyethylene terephthalate in an acetone solution containing 2-fluoroacrylic acid and a photoinitiator, and irradiate under a UV lamp for 1-2 hours to obtain the polyethylene terephthalate graft. Step SS3: Add carboxyl-grafted polyethylene terephthalate to tetrahydrofuran, then add flame retardant, heat to 60-65℃, react for 2-4 hours, after the reaction is complete, dry to obtain modified polyethylene terephthalate. Step SS4: Modified polyethylene terephthalate and di-tert-butyl-p-cresol are respectively fed into a twin-screw extruder and melt extrusion process to obtain masterbatch. The masterbatch is then melt-spun to obtain spinning melt. The spinning melt is drawn into fibers and shaped to obtain flame-retardant fibers.

[0009] Furthermore, the flame retardant is pentaerythritol phosphate; the photoinitiator is benzophenone or benzoin dimethyl ether.

[0010] Through the above technical solution, polyethylene terephthalate (PET) and 2-fluoroacrylic acid undergo polymerization under the action of a photoinitiator, thereby grafting the carboxyl groups of 2-fluoroacrylic acid onto PET, introducing carboxyl active functional groups, and then reacting with the hydroxyl groups of pentaerythritol phosphate, thereby grafting pentaerythritol phosphate onto PET.

[0011] Further, the antibacterial finishing solution comprises the following raw materials in parts by weight: 5-10 parts modified nano titanium dioxide, 30-40 parts ethyl acrylate, 23-30 parts butyl acrylate, 10-15 parts trifluoroethyl acrylate, 5-10 parts sodium dioctyl succinate sulfonate, and 1-1.5 parts benzoyl peroxide.

[0012] Furthermore, the preparation method of the antibacterial finishing solution includes the following steps: Step S1: Sodium dioctyl succinate sulfonate and modified nano titanium dioxide are placed in deionized water and stirred to prepare an emulsifier solution; Step S2: Take one-fifth of the emulsifier solution, add ethyl acrylate and butyl acrylate, ultrasonically disperse evenly, stir, and obtain a pre-emulsion; Step S3: Add trifluoroethyl acrylate to the remaining four-fifths of the emulsifier solution, heat to 50-60℃, stir for 30-50 min, then divide the initiator into three equal parts, take one part of the initiator and add it to the mixture, heat to 60-70℃, stir and react for 30-50 min, then add the remaining initiator and pre-emulsion within 120-150 min, keep the reaction at this temperature for 8-10 h to obtain the antibacterial finishing solution.

[0013] Further, in step S3, the initiator is benzoyl peroxide or di-tert-butyl peroxide.

[0014] Further, in step S1, the preparation method of the modified nano-titanium dioxide includes the following steps: Step A: N-methyliminodiacetic acid and 5-chloro-1-pentene were added to isopropanol and distilled water in a volume ratio of 2:1, heated to 50-60°C, refluxed for 7-8 hours, cooled to room temperature, extracted with diethyl ether, concentrated under reduced pressure, and dried to obtain the grafting modifier. Step B: Disperse nano-titanium dioxide uniformly in toluene solution, add grafting modifier, stir evenly, add p-toluenesulfonic acid, heat to 100-110℃, maintain the temperature for reaction, after the reaction is completed, centrifuge, dry, and obtain modified nano-titanium dioxide.

[0015] Through the above technical solution, N-methyliminodiacetic acid reacts with 5-chloro-1-pentene to generate a grafting modifier containing quaternary ammonium salt. The hydroxyl groups on the surface of nano-titanium dioxide react with the carboxyl groups in the grafting modifier, thereby introducing unsaturated alkenyl groups that can undergo polymerization reactions onto the surface of nano-titanium dioxide.

[0016] Furthermore, in step B, the heat preservation reaction time is 4-6 hours.

[0017] Furthermore, a flame-retardant functional fabric containing basalt fiber is prepared using the above-mentioned production process.

[0018] The beneficial effects of this invention are: (1) This invention involves self-made flame-retardant fibers, which are then woven with basalt fibers and cotton fibers to form a fabric. The fabric is then tie-dyed in an antibacterial finishing solution to obtain a flame-retardant functional fabric. The introduction of flame-retardant element P into modified polyethylene terephthalate gives the prepared fibers excellent flame retardancy. It works synergistically with basalt fibers to enhance the overall flame-retardant performance of the fabric. Furthermore, pentaerythritol phosphate is chemically bonded to the flame-retardant fibers, giving the prepared flame-retardant fabric high washability. At the same time, the antibacterial element F in 2-fluoroacrylic acid enhances the antibacterial performance of the fabric.

[0019] (2) This invention prepares an antibacterial finishing solution by polymerizing modified nano-titanium dioxide with acrylate compounds. The fabric is then tie-dyed in the antibacterial finishing solution. The polyacrylate has adhesive properties and can be more tightly bound to the fabric fibers. Furthermore, the carbonyl polar groups in it can form hydrogen bonds with the fabric surface, making the nano-titanium dioxide more stably adsorbed on the fabric surface, and the antibacterial components are not easily washed off. Under sunlight, nano-titanium dioxide can decompose and release freely moving negatively charged electrons, which are adsorbed and dissolved on the surface of titanium dioxide. Oxygen in the air captures electrons to generate superoxide ions. The generated superoxide ions can react with organic matter in bacteria, thereby killing bacteria in a short time. At the same time, the introduction of fluorine-containing chemical chains and quaternary ammonium salts has bactericidal and antibacterial effects, which work synergistically with nano-titanium dioxide to achieve a qualitative leap in the antibacterial performance of the prepared fabric, expanding the application range and scenarios of the fabric.

[0020] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] 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.

[0022] Figure 1 The infrared spectra of polyethylene terephthalate, polyethylene terephthalate grafts, and modified polyethylene terephthalate in this invention are shown.

[0023] Figure 2 The infrared spectra of the grafted modifier and modified nano-titanium dioxide used in this invention are shown. Detailed Implementation

[0024] 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.

[0025] Preparation Example 1 A flame-retardant functional fabric containing basalt fiber includes cotton fiber, basalt fiber, and flame-retardant fiber; the flame-retardant fiber comprises the following raw materials in parts by weight: 10g polyethylene terephthalate, 2g m-cresol, 5g 2-fluoroacrylic acid, 5.5g pentaerythritol phosphate, 1.5g benzophenone, 200ml acetone, 100ml tetrahydrofuran, and 2.5g di-tert-butyl-p-cresol; The method for preparing the flame-retardant fiber includes the following steps: Step SS1: Add 2g of m-cresol to 10g of polyethylene terephthalate, heat to 65℃, swell for 3h, remove, wash with ethanol, and dry to obtain swollen polyethylene terephthalate. Step SS2: Take 10g of swollen polyethylene terephthalate and immerse it in 200ml of acetone solution containing 5g of 2-fluoroacrylic acid and 1.5g of benzophenone. Irradiate under ultraviolet light for 2h to obtain polyethylene terephthalate graft. Step SS3: Take 8g of carboxyl-grafted polyethylene terephthalate and add it to 100ml of tetrahydrofuran, then add 5.5g of pentaerythritol phosphate, heat to 65℃, react for 4h, after the reaction is completed, dry to obtain modified polyethylene terephthalate. Step SS4: Weigh 6g of modified polyethylene terephthalate and 2.5g of di-tert-butyl-p-cresol and put them into a twin-screw extruder. The masterbatch is obtained by melt extrusion. The masterbatch is then melt-spun to obtain a spinning melt. The spinning melt is drawn into fibers and shaped to obtain flame-retardant fibers.

[0026] Polyethylene terephthalate, polyethylene terephthalate grafts, and modified polyethylene terephthalate were each prepared into potassium bromide tablets and subjected to infrared analysis. The results are as follows: Figure 1 As shown, in polyethylene terephthalate, 1710 cm -1 The absorption peak appearing at 3410 cm⁻¹ is a characteristic absorption peak of the carbonyl group; in the polyethylene terephthalate graft after polymerization, the peak at 3410 cm⁻¹ is a characteristic absorption peak of the carbonyl group. -1 The absorption peak at 2910 cm⁻¹ is a characteristic absorption peak of hydroxyl groups, and the absorption peak at 1730 cm⁻¹ is a characteristic absorption peak of alkyl groups. -1 The peak appearing at 1710 cm⁻¹ is the characteristic absorption peak of the carbonyl group in 2-fluoroacrylic acid. -1 The peak appearing at 2910 cm⁻¹ is the characteristic absorption peak of the carbonyl group in polyethylene terephthalate; in the modified polyethylene terephthalate, the peak at 2910 cm⁻¹ is... -1 The absorption peak appearing at 1725 cm⁻¹ is a characteristic absorption peak of alkyl groups. -1 The peak appearing at 1710 cm⁻¹ is the characteristic absorption peak of the carbonyl group in the ester group. -1The peak appearing at 1250 cm⁻¹ is the characteristic absorption peak of the carbonyl group in polyethylene terephthalate. -1 The absorption peak appearing at 1020 cm⁻¹ is a characteristic absorption peak of the phosphorus-oxygen double bond. -1 The absorption peak appearing at this point is a characteristic absorption peak of the phosphorus-oxygen bond.

[0027] Comparative Preparation Example 1-1 A flame-retardant functional fabric containing basalt fiber includes cotton fiber, basalt fiber and flame-retardant fiber; the flame-retardant fiber comprises the following raw materials in parts by weight: 10g polyethylene terephthalate, 2g m-cresol, 5g 2-fluoroacrylic acid, 1.5g benzophenone, 200ml acetone, 100ml tetrahydrofuran, and 2.5g di-tert-butyl-p-cresol; The method for preparing the flame-retardant fiber includes the following steps: Step SS1: Add 2g of m-cresol to 10g of polyethylene terephthalate, heat to 65℃, swell for 3h, remove, wash with ethanol, and dry to obtain swollen polyethylene terephthalate. Step SS2: Take 10g of swollen polyethylene terephthalate and immerse it in an acetone solution containing 5g of 2-fluoroacrylic acid and 1.5g of benzophenone. Irradiate it under ultraviolet light for 2 hours to obtain modified polyethylene terephthalate. Step SS3: Weigh 6g of modified polyethylene terephthalate and 2.5g of di-tert-butyl-p-cresol and put them into a twin-screw extruder. The masterbatch is obtained by melt extrusion. The masterbatch is then melt-spun to obtain a spinning melt. The spinning melt is drawn into fibers and shaped to obtain flame-retardant fibers.

[0028] Preparation Example 2 The antibacterial finishing solution comprises the following raw materials by weight: 6g modified nano titanium dioxide, 3.5g ethyl acrylate, 2.9g butyl acrylate, 2g trifluoroethyl acrylate, 3.6g sodium dioctyl succinate sulfonate, and 1.5g benzoyl peroxide. The preparation method of the antibacterial finishing solution includes the following steps: Step S1: Add 3.6g of sodium dioctyl succinate sulfonate and 6g of modified nano titanium dioxide to 200ml of deionized water to prepare an emulsifier solution; Step S2: Take one-fifth of the emulsifier solution, add 3.5g of ethyl acrylate and 2.9g of butyl acrylate, ultrasonically disperse evenly, stir, and obtain a pre-emulsion; Step S3: Add 2g of trifluoroethyl acrylate to the remaining four-fifths of the emulsifier solution, heat to 60°C, stir for 50 min, then divide 1.5g of benzoyl peroxide into three equal parts, take one part of benzoyl peroxide and add it to the mixture, heat to 70°C, stir and react for 50 min, then add the remaining benzoyl peroxide and pre-emulsion within 120 min, keep the mixture warm for 10 h, and obtain the antibacterial finishing solution.

[0029] The preparation method of the modified nano-titanium dioxide includes the following steps: Step A: Add 4.5g of N-methyliminodiacetic acid and 2.6g of 5-chloro-1-pentene to 200ml of isopropanol and distilled water in a volume ratio of 2:1, heat to 60℃, reflux for 7h, cool to room temperature, add 300ml of diethyl ether for extraction, concentrate the extract under reduced pressure, and dry to obtain the grafting modifier. Step B: Disperse 10g of nano-titanium dioxide evenly in 300ml of toluene solution, add 3.8g of graft modifier, stir evenly, add 1.5g of p-toluenesulfonic acid, heat to 100℃, react for 4h, after the reaction is completed, centrifuge, dry, and obtain modified nano-titanium dioxide.

[0030] The grafted modifier and modified nano-titanium dioxide were respectively prepared into potassium bromide tablets and subjected to infrared analysis. The results are as follows: Figure 2 As shown, 3400cm in the grafting modifier -1 The peak appearing at 3030 cm⁻¹ is the characteristic absorption peak of hydroxyl groups. -1 The absorption peak appearing at 2960 cm⁻¹ is a characteristic absorption peak of carbon-carbon double bonds. -1 The absorption peak appearing at 1720 cm⁻¹ is a characteristic absorption peak of alkyl groups. -1 The peak appearing at 1700 cm⁻¹ is the characteristic absorption peak of the carbonyl group in N-methyliminodiacetic acid. -1 The peak appearing at 1250 cm⁻¹ is the characteristic absorption peak of the carbonyl group in N-methyliminodiacetic acid. -1 The absorption peak appearing at 3400 cm⁻¹ is a characteristic absorption peak of carbon-chlorine bonds; the modified nano-titanium dioxide at 3400 cm⁻¹... -1 The peak appearing at 3030 cm⁻¹ is the characteristic absorption peak of hydroxyl groups. -1 The absorption peak appearing at 2960 cm⁻¹ is a characteristic absorption peak of carbon-carbon double bonds. -1 The absorption peak appearing at 1700 cm⁻¹ is a characteristic absorption peak of alkyl groups. -1 The peak appearing at this point is a characteristic absorption peak of the carbonyl group.

[0031] Comparative Preparation Example 2-1 The antibacterial finishing solution comprises the following raw materials in parts by weight: 3.5g ethyl acrylate, 2.9g butyl acrylate, 2g trifluoroethyl acrylate, 3.6g sodium dioctyl succinate sulfonate, and 1.5g benzoyl peroxide. The preparation method of the antibacterial finishing solution includes the following steps: Step S1: Add 3.6g of sodium dioctyl succinate sulfonate to 200ml of deionized water to prepare an emulsifier solution; Step S2: Take one-fifth of the emulsifier solution, add 3.5g of ethyl acrylate and 2.9g of butyl acrylate, ultrasonically disperse evenly, stir, and obtain a pre-emulsion; Step S3: Add 2g of trifluoroethyl acrylate to the remaining four-fifths of the emulsifier solution, heat to 60°C, stir for 50 min, then divide 1.5g of benzoyl peroxide into three equal parts, take one part of benzoyl peroxide and add it to the mixture, heat to 70°C, stir and react for 50 min, then add the remaining benzoyl peroxide and pre-emulsion within 120 min, keep the mixture warm for 10 h, and obtain the antibacterial finishing solution.

[0032] Comparative Preparation Example 2-2 The antibacterial finishing solution comprises the following raw materials in parts by weight: 6g modified nano titanium dioxide, 3.5g ethyl acrylate, 2.9g butyl acrylate, 3.6g sodium dioctyl succinate sulfonate, and 1.5g benzoyl peroxide. The preparation method of the antibacterial finishing solution includes the following steps: Step S1: Add 3.6g of sodium dioctyl succinate sulfonate and 6g of modified nano titanium dioxide to 200ml of deionized water to prepare an emulsifier solution; Step S2: Take one-fifth of the emulsifier solution, add 3.5g of ethyl acrylate, ultrasonically disperse evenly, stir, and prepare the pre-liquid; Step S3: Add 2.9g of butyl acrylate to the remaining four-fifths of the emulsifier solution, heat to 60℃, stir for 50min, then divide 1.5g of benzoyl peroxide into three equal parts, take one part of benzoyl peroxide and add it to the mixture, heat to 70℃, stir and react for 50min, then add the remaining benzoyl peroxide and pre-emulsion within 120min, keep warm and react for 10h to obtain the antibacterial finishing solution.

[0033] The preparation method of the modified nano-titanium dioxide includes the following steps: Step A: Add 4.5g of N-methyliminodiacetic acid and 2.6g of 5-chloro-1-pentene to 200ml of isopropanol and distilled water in a volume ratio of 2:1, heat to 60℃, reflux for 7h, cool to room temperature, add 300ml of diethyl ether for extraction, concentrate the extract under reduced pressure, and dry to obtain the grafting modifier. Step B: Disperse 10g of nano-titanium dioxide evenly in 300ml of toluene solution, add 3.8g of graft modifier, stir evenly, add 1.5g of p-toluenesulfonic acid, heat to 100℃, react for 4h, after the reaction is completed, centrifuge, dry, and obtain modified nano-titanium dioxide.

[0034] Example 1 A flame-retardant functional fabric containing basalt fiber includes cotton fiber, basalt fiber, and flame-retardant fiber; the preparation method of the flame-retardant functional fabric containing basalt fiber includes the following steps: Step 1: Twist 5 basalt fibers and flame-retardant fibers into strands to form the warp, and twist 5 cotton fibers into strands to form the weft. The warp and weft are interwoven to form the fabric, thus obtaining the main body fabric. Step 2: Immerse the main fabric in the antibacterial finishing solution and pad dye for 50 minutes, then dry at 80℃ for 3 hours to obtain the final product.

[0035] The preparation method of the flame-retardant fiber is the same as that in Preparation Example 1; the preparation method of the antibacterial finishing solution is the same as that in Preparation Example 2; Comparative Example 1 A flame-retardant functional fabric containing basalt fiber includes cotton fiber, basalt fiber, and flame-retardant fiber; the preparation method of the flame-retardant functional fabric containing basalt fiber includes the following steps: Step 1: Twist 5 basalt fibers and flame-retardant fibers into strands to form the warp, and twist 5 cotton fibers into strands to form the weft. The warp and weft are interwoven to form the fabric, thus obtaining the main body fabric. Step 2: Immerse the main fabric in the antibacterial finishing solution and pad dye for 50 minutes, then dry at 80℃ for 3 hours to obtain the final product.

[0036] The method for preparing the flame-retardant fiber is the same as that in Preparation Example 1; the method for preparing the antibacterial finishing solution is the same as that in Comparative Preparation Example 2-1. Comparative Example 2 A flame-retardant functional fabric containing basalt fiber includes cotton fiber, basalt fiber, and flame-retardant fiber; the preparation method of the flame-retardant functional fabric containing basalt fiber includes the following steps: Step 1: Twist 5 basalt fibers and flame-retardant fibers into strands to form the warp, and twist 5 cotton fibers into strands to form the weft. The warp and weft are interwoven to form the fabric, thus obtaining the main body fabric. Step 2: Immerse the main fabric in the antibacterial finishing solution and pad dye for 50 minutes, then dry at 80℃ for 3 hours to obtain the final product.

[0037] The method for preparing the flame-retardant fiber is the same as that in Preparation Example 1; the method for preparing the antibacterial finishing solution is the same as that in Comparative Preparation Example 2-2. Comparative Example 3 A flame-retardant functional fabric containing basalt fiber includes cotton fiber, basalt fiber, and flame-retardant fiber; the preparation method of the flame-retardant functional fabric containing basalt fiber includes the following steps: Step 1: Twist 5 basalt fibers and flame-retardant fibers into strands to form the warp, and twist 5 cotton fibers into strands to form the weft. The warp and weft are interwoven to form the fabric, thus obtaining the main body fabric. Step 2: Immerse the main fabric in the antibacterial finishing solution and pad dye for 50 minutes, then dry at 80℃ for 3 hours to obtain the final product.

[0038] The method for preparing the flame-retardant fiber is the same as that for comparative preparation example 1-1; the method for preparing the antibacterial finishing solution is the same as that for preparation example 2. Test case (1) Antibacterial performance test: The flame-retardant fabric containing basalt fiber prepared in the examples and comparative examples was prepared into test samples and the antibacterial rate was tested according to the national standard GB / T 21866-2008. The test strain was Staphylococcus aureus.

[0039] (2) Flame retardant performance test: The flame retardant fabric containing basalt fiber prepared in the examples and comparative examples was prepared into test samples and the limiting oxygen index of the samples was determined by using a limiting oxygen index tester in accordance with GB / T 5454-1997.

[0040] (3) Washability test: The flame-retardant fabric containing basalt fiber prepared in the examples and comparative examples was prepared into test samples according to GB / T 3921-2008. The samples were washed at 50°C to test the flame retardant and antibacterial properties after washing. The washability was evaluated by the changes in flame retardant and antibacterial properties.

[0041]

[0042] Based on the above test results, it can be seen that the fabrics prepared in Examples 1-3 of this invention have excellent flame retardancy, antibacterial properties and washability, while the antibacterial properties are poor due to the lack of modified nano titanium dioxide and the flame retardancy is poor due to the lack of compounds containing phosphorus.

[0043] The above description is merely an example and illustration of the concept of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the concept of the invention or exceed the scope defined in the claims, they should all fall within the protection scope of the present invention.

Claims

1. A method for manufacturing a flame-retardant functional fabric containing basalt fiber, characterized in that, Includes the following steps: Step 1: Twist 3-5 basalt fibers and flame-retardant fibers into strands to form the warp, and twist 3-5 cotton fibers into strands to form the weft. The warp and weft are interwoven to form the fabric, thus obtaining the main body fabric. Step 2: Immerse the main fabric in the antibacterial finishing solution and pad dye for 30-50 minutes, then dry at 75-80℃ for 2-3 hours to obtain the final product.

2. The method for manufacturing a flame-retardant functional fabric containing basalt fiber according to claim 1, characterized in that, The flame-retardant fiber comprises the following raw materials in parts by weight: 40-60 parts polyethylene terephthalate, 5-10 parts 2-fluoroacrylic acid, 1-2 parts m-cresol, 10-15 parts flame retardant, 1-3 parts photoinitiator, 70-80 parts acetone, 20-30 parts tetrahydrofuran, and 1-2 parts di-tert-butyl-p-cresol.

3. The method for manufacturing a flame-retardant functional fabric containing basalt fiber according to claim 2, characterized in that, The method for preparing the flame-retardant fiber includes the following steps: Step SS1: Add m-cresol to polyethylene terephthalate, heat to 60-70℃, swell for 2-3 hours, remove, wash with ethanol, and dry to obtain swollen polyethylene terephthalate. Step SS2: Immerse the swollen polyethylene terephthalate in an acetone solution containing 2-fluoroacrylic acid and a photoinitiator, and irradiate under a UV lamp for 1-2 hours to obtain the polyethylene terephthalate graft. Step SS3: Add carboxyl-grafted polyethylene terephthalate to tetrahydrofuran, then add flame retardant, heat to 60-65℃, react for 2-4 hours, after the reaction is complete, dry to obtain modified polyethylene terephthalate. Step SS4: Modified polyethylene terephthalate and di-tert-butyl-p-cresol are respectively fed into a twin-screw extruder and melt extrusion process to obtain masterbatch. The masterbatch is then melt-spun to obtain spinning melt. The spinning melt is drawn into fibers and shaped to obtain flame-retardant fibers.

4. The method for manufacturing a flame-retardant functional fabric containing basalt fiber according to claim 2, characterized in that, The flame retardant is pentaerythritol phosphate; the photoinitiator is benzophenone or benzoin dimethyl ether.

5. A method for manufacturing a flame-retardant functional fabric containing basalt fiber according to claim 1, characterized in that, The antibacterial finishing solution comprises the following raw materials in parts by weight: 5-10 parts modified nano titanium dioxide, 30-40 parts ethyl acrylate, 23-30 parts butyl acrylate, 10-15 parts trifluoroethyl acrylate, 5-10 parts sodium dioctyl succinate sulfonate, and 1-1.5 parts benzoyl peroxide.

6. The method for manufacturing a flame-retardant functional fabric containing basalt fiber according to claim 1, characterized in that, The preparation method of the antibacterial finishing solution includes the following steps: Step S1: Sodium dioctyl succinate sulfonate and modified nano titanium dioxide are placed in deionized water and stirred to prepare an emulsifier solution; Step S2: Take one-fifth of the emulsifier solution, add ethyl acrylate and butyl acrylate, ultrasonically disperse evenly, stir, and obtain a pre-emulsion; Step S3: Add trifluoroethyl acrylate to the remaining four-fifths of the emulsifier solution, heat to 50-60℃, stir for 30-50 min, then divide the initiator into three equal parts, take one part of the initiator and add it to the mixture, heat to 60-70℃, stir and react for 30-50 min, then add the remaining initiator and pre-emulsion within 120-150 min, keep the reaction at this temperature for 8-10 h to obtain the antibacterial finishing solution.

7. A method for manufacturing a flame-retardant functional fabric containing basalt fiber according to claim 6, characterized in that, In step S3, the initiator is benzoyl peroxide or di-tert-butyl peroxide.

8. A method for manufacturing a flame-retardant functional fabric containing basalt fiber according to claim 6, characterized in that, In step S1, the preparation method of the modified nano-titanium dioxide includes the following steps: Step A: N-methyliminodiacetic acid and 5-chloro-1-pentene were added to isopropanol and distilled water in a volume ratio of 2:1, heated to 50-60°C, refluxed for 7-8 hours, cooled to room temperature, extracted with diethyl ether, concentrated under reduced pressure, and dried to obtain the grafting modifier. Step B: Disperse nano-titanium dioxide uniformly in toluene solution, add grafting modifier, stir evenly, add p-toluenesulfonic acid, heat to 100-110℃, maintain the temperature for reaction, after the reaction is completed, centrifuge, dry, and obtain modified nano-titanium dioxide.

9. A method for manufacturing a flame-retardant functional fabric containing basalt fiber according to claim 8, characterized in that, In step B, the heat preservation reaction time is 4-6 hours.

10. A flame-retardant functional fabric containing basalt fiber, characterized in that, It is prepared using the production process described in any one of claims 1-9.

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