Textile base cloth and production process

Abstract

The invention relates to the field of textile materials, and provides textile base cloth and a production process thereof, the textile base cloth is formed by spinning polyester-cotton blended yarns through a plain weave fabric process, and the yarns are prepared from flame-retardant antibacterial fibers, polyester fibers and cotton fibers. The flame-retardant antibacterial fiber is prepared from a surface modified magnesium hydroxide / zinc oxide composite filler, a nitrogen-phosphorus-containing flame retardant, copper sulfate, polyacrylonitrile and the like, the surface modified filler is prepared by modifying 3-aminopropyltriethoxysilane, and divergent magnesium hydroxide nanowires are loaded on the surfaces of zinc oxide whiskers in the filler. The nitrogen and phosphorus containing flame retardant is prepared by condensing phosphonitrilic chloride trimer and sulfanilic acid. The flame-retardant antibacterial fiber is prepared through wet spinning, dimethyl sulfoxide is adopted as a solvent, ethyl alcohol is adopted as a coagulating bath, and the yarn is prepared through the processes of opening, carding, drawing, roving and spinning. After being cleaned, dried and tentered, the textile base cloth has excellent flame-retardant and antibacterial properties and is suitable for the fields of fireproof suits, safety suits and the like.

Description

Technical Field

[0001] The invention relates to the field of textile materials, and in particular to a textile base cloth and a production process. Background Art

[0002] In the current textile industry, textile base fabrics are widely used in functional clothing such as fireproof clothing, safety clothing, medical protective clothing, as well as in the fields of home furnishing, transportation, etc., and their use scenarios put forward higher requirements on the functionality of the base fabrics. Especially in special environments, such as high-temperature and flammable places, medical environments where bacteria breed, or humid and complex outdoor conditions, textile base fabrics not only need to have excellent mechanical properties and durability, but also need to have both flame retardancy and antibacterial properties. Flame retardant properties can effectively delay the spread of flames and prevent the release of toxic gases produced by high-temperature decomposition, thereby protecting personnel safety, while antibacterial properties can inhibit the growth of bacteria and fungi during long-term use, prevent the spread of pathogens, and extend the service life of textiles. On this basis, the base fabric material also needs to meet the requirements of strong environmental adaptability, high economy, and simple preparation process to meet the application needs of different scenarios. Therefore, the development of textile base fabrics with both flame retardant and antibacterial properties can not only improve the safety and reliability of functional clothing and materials, but also broaden their application range in harsh environments, and promote the textile industry to develop in the direction of high performance and multifunctionality, which has important practical significance and market prospects.

[0003] At present, the flame retardant and antibacterial properties of textile base fabrics have attracted widespread attention, but the existing technology still has many shortcomings. For example, the patent with publication number CN110983789A discloses a gauze weaving process based on antibacterial fiber materials. Although antibacterial treatment is designed, it lacks flame retardant design, which limits its wider application. In addition, the Chinese patent with publication number CN118617826A discloses a flame retardant textile base fabric and production process, but the base fabric only adopts the component design of flame retardant performance, so it cannot meet the demand for antibacterial performance. The root cause of these problems is that the existing technology mostly adopts surface treatment to carry out functional modification, resulting in insufficient bonding between the functional components and the base fabric fibers, making it difficult to take into account long-term durability and performance stability. On the other hand, the collaborative design of flame retardant and antibacterial functions is not yet mature, and it is difficult to meet both performance requirements through a single modification strategy. Therefore, developing a textile base fabric based on internal fiber functionalization, embedding flame retardant and antibacterial materials in the fiber matrix, so as to achieve long-term and stable flame retardant and antibacterial properties, as well as economical production process, has become a technical problem that needs to be solved urgently in this field. Summary of the invention

[0004] The purpose of the present invention is to provide a textile base fabric and a preparation process to solve the problem that the current textile base fabric has insufficient antibacterial and flame retardant properties.

[0005] In order to achieve the above object, the present invention provides the following technical solutions: A textile base fabric, wherein the textile base fabric is woven from polyester-cotton blended yarn through a plain weave process; The polyester-cotton blended yarn is obtained by spinning flame-retardant and antibacterial fiber, polyester fiber and cotton fiber in a mass ratio of (25-35): (35-50): (15-25); The flame retardant antibacterial fiber is prepared from the following components in parts by weight: 5.0-10.0 parts of surface modified magnesium hydroxide / zinc oxide composite filler, 2.0-4.5 parts of nitrogen-phosphorus flame retardant, 1.0-2.0 parts of copper sulfate, 30-40 parts of polyacrylonitrile, 3.0-5.0 parts of anhydrous ethanol, 2.0-5.0 parts of polyvinyl pyrrolidone, 1.0-3.0 parts of ethylenediaminetetraacetic acid, and 100 parts of dimethyl sulfoxide; The surface-modified magnesium hydroxide / zinc oxide composite filler is obtained by surface-modifying the magnesium hydroxide / zinc oxide composite filler with 3-aminopropyltriethoxysilane; The magnesium hydroxide / zinc oxide composite filler comprises zinc oxide whiskers and magnesium hydroxide nanowires supported on the surface of the zinc oxide whiskers; The magnesium hydroxide nanowires are uniformly distributed on the surface of the zinc oxide whiskers in a divergent manner in an in-situ growth manner; The nitrogen-phosphorus-containing flame retardant is obtained by condensation reaction of hexachlorocyclotriphosphazene and p-aminobenzenesulfonic acid.

[0006] Furthermore, the preparation method of the surface modified magnesium hydroxide / zinc oxide composite filler is as follows: in parts by weight, 80 to 120 parts of magnesium hydroxide / zinc oxide composite filler, 3.0 to 6.0 parts of 3-aminopropyltriethoxysilane and 10 to 15 parts of anhydrous ethanol are mixed, stirred at 70 to 80° C. for 120 to 240 minutes, and after stirring, the solid powder is filtered and collected, and then the solid powder is washed twice with anhydrous ethanol, and finally the washed solid powder is placed at 80 to 90° C. and dried to constant weight to obtain a surface modified magnesium hydroxide / zinc oxide composite filler.

[0007] The present invention uses 3-aminopropyltriethoxysilane to perform surface modification on magnesium hydroxide / zinc oxide composite fillers, aiming to improve the dispersibility, interface compatibility and functional stability of the composite fillers. 3-aminopropyltriethoxysilane is used as a silane coupling agent. Its molecular structure contains both siloxy groups that can bind to the surface active sites of inorganic fillers and amino groups that can interact with organic matrices. By forming a strong chemical bond or hydrogen bond with the filler surface, it can effectively improve the dispersibility of the filler in the organic matrix and avoid the performance degradation caused by agglomeration. At the same time, the surface modification also enhances the interfacial bonding force between the filler and the polymer matrix, reduces the interface defects, and improves the mechanical properties and long-term stability of the composite material. In addition, the modified filler has more uniform surface chemical properties and more stable functional activity, which helps to achieve the synergistic effect of flame retardant and antibacterial properties in the composite material, thereby giving full play to the functional advantages of the filler.

[0008] Further, the preparation method of the magnesium hydroxide / zinc oxide composite filler is as follows: by weight, 20 to 30 parts of zinc oxide whiskers are added to 100 to 150 parts of deionized water, 1.0 to 2.0 parts of sodium dodecyl sulfate are added, and the mixture is stirred at a stirring rate of 300 to 500 rpm for 20 to 30 minutes to obtain a zinc oxide whisker dispersion; 10 to 20 parts of 0.5 to 1.0 mol / L magnesium sulfate solution are slowly added to the dispersion, and the reaction temperature is controlled to be 60 to 80°C, stirring is continued for 15 to 30 minutes, and then 20 to 40 parts of 0.5 to 0.8 mol / L sodium hydroxide solution, control the dropping rate to 1.0~2.0L / min, adjust the pH to 10~12, keep the reaction solution stirring at 80~100℃ for 20~40min; transfer the mixed solution to a hydrothermal reactor, and carry out hydrothermal reaction at 120~150℃ for 8~12h; after the reaction is completed, cool to room temperature, collect the precipitate by centrifugation, and wash the precipitate with deionized water for 3~5 times to remove impurities; place the obtained precipitate in a vacuum drying oven at 80~100℃ and dry it for 360~420min, and then grind it to a particle size of 200 mesh to obtain a magnesium hydroxide / zinc oxide composite filler.

[0009] Further, the preparation method of the zinc oxide whisker is as follows: by weight, 10 to 20 parts of zinc chloride are dissolved in 100 to 150 parts of deionized water, and stirred at a stirring rate of 300 to 500 rpm for 20 to 30 minutes; then, 20 to 30 parts of hexamethylenetetramine are added to the solution, the stirring rate is maintained at 300 to 500 rpm, and stirring is continued for 10 to 20 minutes to form a precursor solution; the precursor solution is transferred to a reactor, and a hydrothermal reaction is carried out at 90 to 120° C. for 8 to 12 hours. h; after the reaction is completed, the reactor is cooled to room temperature, the obtained reaction solution is separated by centrifugation, and the generated precipitate is collected; the precipitate is washed with deionized water for 3 to 5 times, and the washed precipitate is placed in a vacuum drying oven at 80 to 100°C and dried for 6 to 8 hours; the dried precipitate is placed in a muffle furnace, heated to 400 to 600°C at a heating rate of 5°C / min, and calcined for 2 to 4 hours at a temperature retention rate, and then cooled to room temperature after calcination; the obtained product is ground to a particle size of 200 to 300 meshes to obtain zinc oxide whiskers.

[0010] Further, the mass ratio of the zinc oxide whiskers and the magnesium hydroxide nanowires is (90-95): (5-10); Furthermore, the zinc oxide whiskers have an average diameter of 0.5-1.5 μm and an average length of 4.5-8.0 μm.

[0011] Furthermore, the average diameter of the magnesium hydroxide is 50-150 nm, and the average length is 3.5-8.0 μm.

[0012] The present invention adopts the design of magnesium hydroxide / zinc oxide composite filler mainly for enhancing the flame retardant and antibacterial properties of fiber materials. By rationally optimizing the synergistic ratio of zinc oxide whiskers and magnesium hydroxide nanowires and their preparation process, the two materials are highly complementary in structure and function. Zinc oxide whiskers, with their high aspect ratio and excellent thermal stability as functional skeleton, can play a good physical barrier role in the flame retardant process, inhibit the transfer of heat and oxygen, and their antibacterial properties come from the released zinc ions, which can destroy the bacterial cell membrane structure and effectively inhibit the growth of microorganisms. Magnesium hydroxide nanowires are evenly distributed on the surface of zinc oxide whiskers in a divergent shape, and absorb heat and release water molecules by decomposing under high temperature environment, further reducing the thermal decomposition rate of the material, thereby enhancing the flame retardant properties. In addition, the uniform distribution of magnesium hydroxide nanowires not only improves the dispersibility of the composite filler, but also enhances its interface bonding force with the matrix material, thereby improving the overall stability and functional durability of the composite material. In the specific preparation, zinc oxide whiskers achieve precise control of morphology by controlling solution conditions and hydrothermal reaction parameters, and have high aspect ratio and good crystallinity, while magnesium hydroxide nanowires are in situ grown on the whisker surface through subsequent alkaline solution adjustment and hydrothermal reaction, so that the composite material has excellent structural integrity and functional synergy. By compounding zinc oxide whiskers and magnesium hydroxide nanowires in a mass ratio of (90~95):(5~10), a synergistic flame retardant and antibacterial effect can be formed in the material, thereby effectively meeting the multifunctional requirements of high-performance fiber materials in complex use environments.

[0013] Further, the preparation method of the nitrogen-phosphorus-containing flame retardant is as follows: by weight, 20 to 30 parts of p-aminobenzenesulfonic acid and 30 to 40 parts of anhydrous acetonitrile are added to a three-necked flask with a condenser, and 5.0 to 10.0 parts of hexachlorocyclotriphosphazene are dissolved in 30 parts of anhydrous acetonitrile to form a hexachlorocyclotriphosphazene solution, which is slowly dripped into the three-necked flask by a dropwise manner, and the stirring reaction is continued under reflux conditions for 30 to 60 minutes; then 1.5 to 2.5 parts of triethylamine are added, and after the addition is completed, the temperature is gradually increased to 70 to 75° C., and the reflux reaction is maintained for 8 to 12 hours; after the reaction is completed, the reaction mixture is poured into 100 to 150 parts of dimethyl sulfoxide, and a hot filtration operation is performed while hot and the filtrate is retained, and the obtained filtrate is added to a rotary instrument, and the rotary evaporation temperature is set to 50 to 60° C., and the decompression condition is 0.09 to 0.095 MPa, the rotary evaporation time is 30~60min, and finally a white nitrogen-phosphorus-containing flame retardant is obtained.

[0014] The present invention adopts the design of nitrogen-phosphorus flame retardant mainly for enhancing the flame retardant performance of the material, and through reasonable chemical synthesis and component optimization, it forms a protective carbonized layer with synergistic flame retardant effect under high temperature conditions. The nitrogen-phosphorus flame retardant is prepared by condensation reaction of p-aminobenzenesulfonic acid and hexachlorocyclotriphosphazene, wherein p-aminobenzenesulfonic acid provides sulfate and amino functional groups, which can promote the rapid dehydration and carbonization of the material during the combustion process, thereby forming a dense carbonized layer to isolate heat source and oxygen; hexachlorocyclotriphosphazene, as a phosphorus source, can not only release phosphoric acid or polyphosphoric acid compounds at high temperature, further enhance the stability of the carbonized layer, but also capture the free radicals generated during the combustion process, and inhibit the combustion chain reaction. In addition, the introduction of triethylamine plays a catalytic role in the reaction, which can effectively regulate the condensation reaction rate, improve the synthesis efficiency of the flame retardant and its chemical stability. By combining with dimethyl sulfoxide, the solubility and dispersibility of the flame retardant are further improved, so that its distribution in the material matrix is ​​more uniform, thereby achieving a comprehensive improvement in flame retardant performance. In the overall design, p-aminobenzenesulfonic acid and hexachlorocyclotriphosphazene form good functional synergy, which can not only significantly improve the carbonization ability of the material through chemical action, but also effectively inhibit heat transfer and oxygen diffusion during the combustion process through physical barrier effect, thereby giving the material excellent flame retardant properties.

[0015] Furthermore, the preparation method of the flame-retardant antibacterial fiber is as follows: adding surface-modified magnesium hydroxide / zinc oxide composite filler, nitrogen-phosphorus flame retardant, copper sulfate, polyacrylonitrile, anhydrous ethanol, polyvinyl pyrrolidone and ethylenediaminetetraacetic acid to a reaction kettle in sequence, stirring the mixture at a stirring rate of 300-500 rpm for 20-30 minutes to form a uniform mixed solution; heating the mixed solution to 60-80°C, stirring for 60-120 minutes, and naturally cooling to room temperature after the reaction is completed; transferring the cooled mixed solution to a vacuum drying oven, and drying at 60-80°C. The fiber was dried under vacuum for 6-8 hours to obtain dry powder for later use; the dried powder was dissolved in 100 parts of dimethyl sulfoxide solvent and stirred at 60-70°C for 4-6 hours until a uniform spinning solution was formed; the spinning solution was ejected through a spinneret with a spinneret hole diameter of 0.1-0.2 mm; a wet coagulation process was adopted, and the ejected fiber was placed in a coagulation bath of 50-70% ethanol by mass, the coagulation bath temperature was 20-30°C, the stretching ratio was 2-5 times, and the stretched fiber was dried in a constant temperature drying oven at 80-100°C for 6-8 hours to obtain a flame retardant and antibacterial fiber.

[0016] Furthermore, the preparation method of the polyester-cotton blended yarn comprises the following steps: uniformly mixing flame-retardant and antibacterial fiber, nylon fiber and cotton fiber according to a mass ratio, and preparing the polyester-cotton blended yarn through the following process; spinning through opening, carding, drawing, roving and spun yarn processes to obtain the polyester-cotton blended yarn; the specific parameters of the opening process are: the mixed fiber raw material is processed by an opening machine, the opening roller speed is 800~1200rpm, the opening time is 2~5min, and a uniform and loose fiber bundle is formed; the specific parameters of the combing process are: the opened fibers are combed into a fiber web by a carding machine, and the card clothing speed of the carding machine is 1000~1500m / min , the fiber web quantity is 20~30g / m²; the specific parameters of the drawing process are: the carded fiber web is combined through a drawing frame, the drawing speed is 200~300m / min, the drawing times are 2~4 times, and a uniform fiber strip is formed; the specific parameters of the roving process are: the drawn fiber strip is spun into roving through a roving frame, the roving frame speed is 500~800rpm, and the roving twist coefficient is 80~120; the specific parameters of the spun yarn process are: the spun yarn is spun into polyester-cotton blended yarn through a spun yarn frame, the spun yarn frame spindle speed is 8000~12000rpm, the twist coefficient is 120~180, and the yarn count is 30~50.

[0017] The invention also discloses a production process of a textile base fabric, comprising the following steps: S1. The polyester-cotton blended yarn is interwoven on a loom according to the set warp and weft density through a plain weave process to weave into an initial base fabric; the specific parameters of the weaving process are: warp tension of 80~120cN, warp density of 40~60 yarns / cm, weft density of 30~50 yarns / cm, and loom speed of 200~400r / min.

[0018] S2. The initial substrate is placed in a water bath at 60-80°C for cleaning for 20-40 minutes to remove oil and impurities on the surface of the yarn; S3. Place the cleaned substrate in a vacuum drying oven and dry it at 80-100°C for 4-6 hours. Place the dried substrate in a leveling device for stentering and finishing; the stentering tension is 80-150N, the finishing temperature is 100-130°C, and the finishing time is 30-60s.

[0019] S4. The flatness and warp and weft density of the finished base fabric are tested, and the preparation of the textile base fabric is completed after it meets the standards.

[0020] The present invention adopts a design combining flame-retardant antibacterial fiber with polyester-cotton blended yarn, which is mainly used to enhance the flame-retardant and antibacterial properties of textile base fabrics. Through the synergistic effect of multiple components and precise process design, the overall optimization of material performance is achieved. The preparation of flame-retardant antibacterial fiber uses surface-modified magnesium hydroxide / zinc oxide composite filler, nitrogen-phosphorus flame retardant and copper sulfate as functional components, and forms a spinning solution by uniformly mixing with polyacrylonitrile, and prepares the fiber by wet coagulation process. During the flame retardant process, the surface-modified magnesium hydroxide / zinc oxide composite filler effectively delays combustion and enhances thermal stability through the decomposition and absorption of heat by magnesium hydroxide and the physical barrier effect of zinc oxide; the nitrogen-phosphorus flame retardant forms a dense carbonized layer at high temperature, further improving the flame retardant effect of the fiber; and copper sulfate inhibits bacterial growth by releasing copper ions to achieve antibacterial function. These components are evenly dispersed in the fiber matrix and work synergistically with each other, so that the fiber has both flame retardant and antibacterial properties. In the preparation of polyester-cotton blended yarn, flame-retardant and antibacterial fibers are mixed with polyester fibers and cotton fibers in proportion. The uniformity and mechanical properties of the yarn are ensured through fine processes such as opening, carding, and drawing, and finally a stable blended yarn is obtained. In the preparation of textile base fabrics, by setting reasonable warp and weft density and weaving process parameters, the blended yarn forms a plain fabric with uniform structure on the loom, and then undergoes post-processing processes such as cleaning, drying, and tentering to further improve the flatness and dimensional stability of the base fabric. In the overall technical solution, each component shows significant synergy in the functions and processing links, which not only effectively improves the flame retardant and antibacterial properties of the textile base fabric, but also ensures the mechanical strength, processing stability and ability to adapt to complex environments of the material, meeting the practical application needs of multifunctional textile materials.

[0021] Beneficial technical effects 1. The present invention uses 3-aminopropyltriethoxysilane to modify the surface of magnesium hydroxide / zinc oxide composite fillers, significantly improving the dispersibility, interface compatibility and functional stability of the fillers. Compared with the prior art, it effectively avoids the performance degradation caused by filler agglomeration, enhances the interface bonding force with the matrix, and improves the mechanical properties and flame retardant and antibacterial properties of the composite material. The uniform surface chemical properties and stable activity of the modified filler form a synergistic effect in the fiber matrix, giving the material a better flame retardant and antibacterial effect, solving the shortcomings of the prior art in terms of performance stability and functional synergy, and giving the present invention a wider application prospect and industry driving force.

[0022] 2. The present invention achieves a high degree of synergy between flame retardant and antibacterial properties by optimizing the ratio and preparation process of magnesium hydroxide / zinc oxide composite fillers. Zinc oxide whiskers provide excellent thermal stability and zinc ion antibacterial effect, and magnesium hydroxide nanowires enhance the flame retardant effect by decomposing heat and releasing water molecules, while improving dispersibility and interfacial bonding. Compared with the prior art, the present invention significantly improves the functional stability and processing adaptability of the material, solves the problems of performance attenuation and preparation complexity of flame retardant and antibacterial materials, and promotes the application and development of multifunctional fiber materials in safety protection and special environments.

[0023] 3. The present invention significantly improves the flame retardant properties of the material through the optimized design of the nitrogen-phosphorus flame retardant. The nitrogen-phosphorus flame retardant is prepared by condensation reaction of p-aminobenzenesulfonic acid and hexachlorocyclotriphosphazene, wherein p-aminobenzenesulfonic acid provides sulfate and amino functional groups, which can promote the rapid dehydration and carbonization of the material during the combustion process, thereby forming a dense carbonized layer to isolate the heat source and oxygen, and quickly form a dense carbonized layer at high temperature to isolate the heat source and oxygen, and stabilize the carbonized layer by releasing phosphoric acid substances, while inhibiting the combustion chain reaction. Compared with the prior art, the present invention has obvious advantages in flame retardant efficiency, dispersibility and chemical stability, solves the problems of uneven distribution of flame retardants and insufficient combustion inhibition effect, and promotes the wide application of high-efficiency flame retardant materials in the fields of construction, textiles, etc.

[0024] 4. The present invention significantly improves the flame retardant and antibacterial properties of the textile base fabric through the coordinated design of flame retardant antibacterial fiber and polyester-cotton blended yarn, overcoming the defects of single function and unstable performance in the prior art. The surface-modified magnesium hydroxide / zinc oxide composite filler, nitrogen-phosphorus-containing flame retardant and copper sulfate work synergistically and are evenly distributed in the fiber matrix to achieve a high degree of combination of flame retardant and antibacterial effects, while ensuring the mechanical properties of the yarn and the processing stability of the base fabric. Compared with traditional technologies, the present invention has significant advantages in safety, durability and environmental adaptability, and is widely used in protective clothing, decorative materials and other fields, promoting the development of multifunctional textiles. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a scanning electron microscope morphology image of the zinc oxide whisker prepared in Example 1 of the present invention.

[0026] Figure 2 This is the XRD spectrum of the phase analysis of the zinc oxide whisker prepared in Example 1 of the present invention.

[0027] Figure 3 This is a scanning electron microscope morphology image of the magnesium hydroxide / zinc oxide composite filler prepared in Example 1 of the present invention.

[0028] Figure 4 This is the XRD spectrum of the phase analysis of the magnesium hydroxide / zinc oxide composite filler prepared in Example 1 of the present invention. DETAILED DESCRIPTION

[0029] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] Embodiment 1 A textile base fabric, the textile base fabric of this embodiment is woven from polyester-cotton blended yarn through a plain weave process; The polyester-cotton blended yarn of this embodiment is obtained by spinning flame-retardant and antibacterial fiber, polyester fiber and cotton fiber in a mass ratio of 25:35:15; The flame-retardant and antibacterial fiber of this embodiment is prepared from the following components in parts by weight: 5.0 parts of surface-modified magnesium hydroxide / zinc oxide composite filler, 2.0 parts of nitrogen-phosphorus-containing flame retardant, 1.0 parts of copper sulfate, 30 parts of polyacrylonitrile, 3.0 parts of anhydrous ethanol, 2.0 parts of polyvinyl pyrrolidone, 1.0 parts of ethylenediaminetetraacetic acid, and 100 parts of dimethyl sulfoxide; The surface-modified magnesium hydroxide / zinc oxide composite filler of the present embodiment is obtained by surface-modifying the magnesium hydroxide / zinc oxide composite filler with 3-aminopropyltriethoxysilane; the magnesium hydroxide / zinc oxide composite filler comprises zinc oxide whiskers and magnesium hydroxide nanowires loaded on the surface of the zinc oxide whiskers of the present embodiment; the magnesium hydroxide nanowires are uniformly distributed on the surface of the zinc oxide whiskers in a divergent manner in an in-situ growth manner; the nitrogen-phosphorus-containing flame retardant is obtained by a condensation reaction of hexachlorocyclotriphosphazene and p-aminobenzenesulfonic acid.

[0031] The preparation method of the surface modified magnesium hydroxide / zinc oxide composite filler of the present embodiment is as follows: in parts by weight, 80 parts of magnesium hydroxide / zinc oxide composite filler, 3.0 parts of 3-aminopropyltriethoxysilane and 10 parts of anhydrous ethanol are mixed, and the mixture is stirred at 70° C. for 120 minutes. After the stirring is completed, the solid powder is collected by filtration, and then the solid powder is washed twice with anhydrous ethanol. Finally, the washed solid powder is dried at 80° C. to constant weight to obtain the surface modified magnesium hydroxide / zinc oxide composite filler.

[0032] The preparation method of the magnesium hydroxide / zinc oxide composite filler of the present embodiment is as follows: by weight, 20 parts of zinc oxide whiskers are added to 100 parts of deionized water, 1.0 part of sodium dodecyl sulfate is added, and the mixture is stirred at a stirring rate of 300 rpm for 20 minutes to obtain a zinc oxide whisker dispersion; 10 parts of 0.5 mol / L magnesium sulfate solution are slowly added to the dispersion, and the reaction temperature is controlled to be 60° C., and the stirring is continued for 15 minutes, and then 20 parts of 0.5 mol / L sodium hydroxide solution are dropwise added to the system, the drop rate is controlled to be 1.0 L / min, and the pH is adjusted to 10, and the reaction solution is kept stirred at 80° C. for 20 minutes; the mixed solution is transferred to a hydrothermal reactor, and a hydrothermal reaction is carried out at 120° C. for 8 hours; after the reaction is completed, the mixture is cooled to room temperature, a precipitate is collected by centrifugation, and the precipitate is washed 3 times with deionized water to remove impurities; the obtained precipitate is placed in a vacuum drying oven at 80° C. and dried for 360 minutes, and then ground to a particle size of 200 mesh to obtain a magnesium hydroxide / zinc oxide composite filler.

[0033] The preparation method of the zinc oxide whisker of the present embodiment is as follows: 10 parts of zinc chloride are dissolved in 100 parts of deionized water by weight, and stirred at a stirring rate of 300 rpm for 20 minutes; then, 20 parts of hexamethylenetetramine are added to the solution, the stirring rate is maintained at 300 rpm, and stirring is continued for 10 minutes to form a precursor solution; the precursor solution is transferred to a reactor, and a hydrothermal reaction is carried out at 90° C. for 8 hours; after the reaction is completed, the reactor is cooled to room temperature, the obtained reaction solution is separated by centrifugation, and the generated precipitate is collected; the precipitate is washed with deionized water for 3 times, and the washed precipitate is placed in a vacuum drying oven at 80° C. and dried for 6 hours; the dried precipitate is placed in a muffle furnace, heated to 400° C. at a heating rate of 5° C. / min, and calcined for 2 hours, and cooled to room temperature after calcination; the obtained product is ground to a particle size of 200 mesh to obtain zinc oxide whiskers.

[0034] The mass ratio of zinc oxide whiskers to magnesium hydroxide nanowires in this embodiment is 95:5; the average diameter of zinc oxide whiskers is 0.5 μm, and the average length is 4.5 μm; the average diameter of magnesium hydroxide is 50 nm, and the average length is 3.5 μm.

[0035] The preparation method of the nitrogen-phosphorus-containing flame retardant of the present embodiment is as follows: by weight, 20 parts of p-aminobenzenesulfonic acid and 30 parts of anhydrous acetonitrile are added to a three-necked flask with a condenser, and 5.0 parts of hexachlorocyclotriphosphazene are dissolved in 30 parts of anhydrous acetonitrile to form a hexachlorocyclotriphosphazene solution, which is slowly dripped into the three-necked flask by a dropwise manner, and the stirring reaction is continued under reflux conditions for 30 minutes; then 1.5 parts of triethylamine are added, and after the addition is completed, the temperature is gradually increased to 70° C., and the reflux reaction is maintained for 8 hours; after the reaction is completed, the reaction mixture is poured into 100 parts of dimethyl sulfoxide, and a hot filtration operation is performed while hot and the filtrate is retained, and the obtained filtrate is added to a rotary instrument, and the rotary evaporation temperature is set to 50° C., the reduced pressure condition is 0.09 MPa, and the rotary evaporation time is 30 minutes, and finally a white nitrogen-phosphorus-containing flame retardant is obtained.

[0036] The preparation method of the flame-retardant antibacterial fiber of this embodiment is as follows: surface-modified magnesium hydroxide / zinc oxide composite filler, nitrogen-phosphorus flame retardant, copper sulfate, polyacrylonitrile, anhydrous ethanol, polyvinyl pyrrolidone and ethylenediaminetetraacetic acid are added to a reaction kettle in sequence, and the mixture is stirred at a stirring rate of 300 rpm for 20 minutes to form a uniform mixed solution; the mixed solution is heated to 60°C and stirred for 60 minutes, and naturally cooled to room temperature after the reaction is completed; the cooled mixed solution is transferred to a vacuum drying oven, vacuum dried at 60°C for 6 hours to obtain a dry powder for standby use; the dried powder is dissolved in 100 parts of dimethyl sulfoxide solvent, stirred at 60°C for 4 hours until a uniform spinning solution is formed; the spinning solution is ejected through a spinneret, the spinneret hole diameter is 0.1 mm, and a wet coagulation process is used to place the ejected fiber in a coagulation bath of 50% ethanol by mass, the coagulation bath temperature is 20°C, the stretching ratio is 2 times, and the stretched fiber is dried in a constant temperature drying oven at 80°C for 6 hours to obtain a flame-retardant antibacterial fiber.

[0037] The preparation method of the polyester-cotton blended yarn of the present embodiment comprises the following steps: uniformly mixing the flame-retardant and antibacterial fiber, the polyester fiber and the cotton fiber according to the mass ratio, and preparing the polyester-cotton blended yarn by the following process; spinning the yarn by opening, carding, drawing, roving and spinning processes to obtain the polyester-cotton blended yarn of the present embodiment; the specific parameters of the opening process of the present embodiment are: the mixed fiber raw material is processed by an opening machine, the opening roller speed is 800 rpm, the opening time is 2 minutes, and a uniform and loose fiber bundle is formed; the specific parameters of the combing process of the present embodiment are: the opened fibers are combed into a fiber web by a carding machine, and the card clothing speed of the carding machine is 1 000m / min, the fiber web quantitative is 20g / m²; the specific parameters of the drawing process of this embodiment are: the carded fiber web is combined through a drawing frame, the drawing machine speed is 200m / min, the drawing times are 2 times, and a uniform fiber strip is formed; the specific parameters of the roving process of this embodiment are: the drawn fiber strip is spun into roving through a roving frame, the roving frame speed is 500rpm, and the roving twist coefficient is 80; the specific parameters of the spun yarn process of this embodiment are: the spun yarn is spun into polyester-cotton blended yarn through a spun yarn frame, the spun yarn spindle speed is 8000rpm, the twist coefficient is 120, and the yarn count is 30.

[0038] A production process of a textile base fabric of this embodiment includes the following steps: S1. The polyester-cotton blended yarn of this embodiment is interwoven on a loom according to the set warp and weft density through a plain weave process to weave into an initial base fabric; the specific parameters of the weaving process of this embodiment are: warp tension of 80 cN, warp density of 40 yarns / cm, weft density of 30 yarns / cm, and loom speed of 200 r / min.

[0039] S2. The initial base is placed in a water bath at 60°C for cleaning for 20 minutes to remove oil and impurities on the surface of the yarn; S3. Place the cleaned substrate in a vacuum drying oven and dry it at 80°C for 4 hours. Place the dried substrate in a leveling device for stentering and finishing; the stentering tension is 80N, the finishing temperature is 100°C, and the finishing time is 30s.

[0040] S4. The flatness and warp and weft density of the finished base fabric are tested, and the preparation of the textile base fabric is completed after it meets the standards.

[0041] Embodiment 2 A textile base fabric, the textile base fabric of this embodiment is woven from polyester-cotton blended yarn through a plain weave process; The polyester-cotton blended yarn of this embodiment is obtained by spinning flame-retardant and antibacterial fiber, polyester fiber and cotton fiber in a mass ratio of 28:41:18; The flame retardant and antibacterial fiber of this embodiment is prepared from the following components in parts by weight: 6.5 parts of surface modified magnesium hydroxide / zinc oxide composite filler, 2.8 parts of nitrogen-phosphorus flame retardant, 1.3 parts of copper sulfate, 33 parts of polyacrylonitrile, 3.6 parts of anhydrous ethanol, 3.0 parts of polyvinyl pyrrolidone, 1.6 parts of ethylenediaminetetraacetic acid, and 100 parts of dimethyl sulfoxide; The surface-modified magnesium hydroxide / zinc oxide composite filler of the present embodiment is obtained by surface-modifying the magnesium hydroxide / zinc oxide composite filler with 3-aminopropyltriethoxysilane; the magnesium hydroxide / zinc oxide composite filler comprises zinc oxide whiskers and magnesium hydroxide nanowires loaded on the surface of the zinc oxide whiskers of the present embodiment; the magnesium hydroxide nanowires are uniformly distributed on the surface of the zinc oxide whiskers in a divergent manner in an in-situ growth manner; the nitrogen-phosphorus-containing flame retardant is obtained by a condensation reaction of hexachlorocyclotriphosphazene and p-aminobenzenesulfonic acid.

[0042] The preparation method of the surface modified magnesium hydroxide / zinc oxide composite filler of the present embodiment is as follows: in parts by weight, 92 parts of magnesium hydroxide / zinc oxide composite filler, 4.2 parts of 3-aminopropyltriethoxysilane and 12 parts of anhydrous ethanol are mixed, and the mixture is stirred at 74° C. for 168 minutes. After the stirring is completed, the solid powder is collected by filtration, and then the solid powder is washed twice with anhydrous ethanol. Finally, the washed solid powder is dried at 84° C. to constant weight to obtain the surface modified magnesium hydroxide / zinc oxide composite filler.

[0043] The preparation method of the magnesium hydroxide / zinc oxide composite filler of the present embodiment is as follows: by weight, 23 parts of zinc oxide whiskers are added to 115 parts of deionized water, 1.3 parts of sodium dodecyl sulfate are added, and the mixture is stirred at a stirring rate of 390 rpm for 26 minutes to obtain a zinc oxide whisker dispersion; 13 parts of 0.65 mol / L magnesium sulfate solution are slowly added to the dispersion, and the reaction temperature is controlled to 72°C, and stirring is continued for 20 minutes, and then 26 parts of 0.62 mol / L sodium hydroxide solution, controlling the dropping rate to 1.3L / min, and adjusting the pH to 11, keeping the reaction solution stirred at 90°C for 30min; transferring the mixed solution to a hydrothermal reactor, and carrying out a hydrothermal reaction at 135°C for 10h; after the reaction is completed, cooling to room temperature, collecting the precipitate by centrifugation, and washing the precipitate with deionized water for 4 times to remove impurities; placing the obtained precipitate in a vacuum drying oven at 90°C and drying it for 400min, and then grinding it to a particle size of 200 mesh to obtain a magnesium hydroxide / zinc oxide composite filler.

[0044] The preparation method of the zinc oxide whisker of the present embodiment is as follows: 13 parts of zinc chloride are dissolved in 115 parts of deionized water by weight, and stirred at a stirring rate of 390 rpm for 26 minutes; then, 26 parts of hexamethylenetetramine are added to the solution, the stirring rate is maintained at 390 rpm, and stirring is continued for 13 minutes to form a precursor solution; the precursor solution is transferred to a reactor, and a hydrothermal reaction is carried out at 108° C. for 10 hours; after the reaction is completed, the reactor is cooled to room temperature, the obtained reaction solution is separated by centrifugation, and the generated precipitate is collected; the precipitate is washed with deionized water for 4 times, and the washed precipitate is placed in a vacuum drying oven at 90° C. and dried for 7 hours; the dried precipitate is placed in a muffle furnace, heated to 470° C. at a heating rate of 5° C. / min, and calcined for 3 hours, and cooled to room temperature after calcination; the obtained product is ground to a particle size of 200 mesh to obtain zinc oxide whiskers.

[0045] The mass ratio of zinc oxide whiskers to magnesium hydroxide nanowires in this embodiment is 92:8; the average diameter of zinc oxide whiskers is 0.8 μm, and the average length is 6.1 μm. The average diameter of magnesium hydroxide is 90 nm, and the average length is 5.1 μm.

[0046] The preparation method of the nitrogen-phosphorus-containing flame retardant of the present embodiment is as follows: by weight, 26 parts of p-aminobenzenesulfonic acid and 36 parts of anhydrous acetonitrile are added to a three-necked flask with a condenser, and 6.5 parts of hexachlorocyclotriphosphazene are dissolved in 36 parts of anhydrous acetonitrile to form a hexachlorocyclotriphosphazene solution, which is slowly dripped into the three-necked flask by a dropwise manner, and the stirring reaction is continued under reflux conditions for 39 minutes; then 2.0 parts of triethylamine are added, and after the addition is completed, the temperature is gradually increased to 73° C., and the reflux reaction is maintained for 10 hours; after the reaction is completed, the reaction mixture is poured into 120 parts of dimethyl sulfoxide, and a hot filtration operation is performed while hot and the filtrate is retained. The obtained filtrate is added to a rotary instrument, and the rotary evaporation temperature is set to 55° C., the reduced pressure condition is 0.093 MPa, and the rotary evaporation time is 39 minutes, and finally a white nitrogen-phosphorus-containing flame retardant is obtained.

[0047] The preparation method of the flame-retardant antibacterial fiber of this embodiment is as follows: surface-modified magnesium hydroxide / zinc oxide composite filler, nitrogen-phosphorus flame retardant, copper sulfate, polyacrylonitrile, anhydrous ethanol, polyvinyl pyrrolidone and ethylenediaminetetraacetic acid are added to a reaction kettle in sequence, and the mixture is stirred at a stirring rate of 390 rpm for 26 minutes to form a uniform mixed solution; the mixed solution is heated to 72° C. and stirred for 78 minutes, and naturally cooled to room temperature after the reaction is completed; the cooled mixed solution is transferred to a vacuum drying oven, vacuum dried at 72° C. for 7 hours to obtain a dry powder for standby use; the dried powder is dissolved in 115 parts of dimethyl sulfoxide solvent, and stirred at 65° C. for 5 hours until a uniform spinning solution is formed; the spinning solution is ejected through a spinneret, the spinneret hole diameter is 0.15 mm, and a wet coagulation process is used to place the ejected fiber in a coagulation bath of 60% by mass ethanol, the coagulation bath temperature is 26° C., and the stretching ratio is 3 times. The stretched fiber is dried in a constant temperature drying oven at 90° C. for 7 hours to obtain a flame-retardant antibacterial fiber.

[0048] The preparation method of the polyester-cotton blended yarn of the present embodiment comprises the following steps: uniformly mixing the flame-retardant and antibacterial fiber, the polyester fiber and the cotton fiber according to the mass ratio, and preparing the polyester-cotton blended yarn by the following process; spinning the yarn by opening, carding, drawing, roving and spinning processes to obtain the polyester-cotton blended yarn of the present embodiment; the specific parameters of the opening process of the present embodiment are: the mixed fiber raw material is processed by an opening machine, the opening roller speed is 1040rpm, the opening time is 3min, and a uniform and loose fiber bundle is formed; the specific parameters of the combing process of the present embodiment are: the opened fibers are combed into a fiber web by a carding machine, and the card clothing speed of the carding machine is 1 250m / min, the fiber web quantitative is 26g / m²; the specific parameters of the drawing process of this embodiment are: the carded fiber web is combined through a drawing frame, the drawing machine speed is 260m / min, the drawing times are 3 times, and a uniform fiber strip is formed; the specific parameters of the roving process of this embodiment are: the drawn fiber strip is spun into roving through a roving frame, the roving frame speed is 650rpm, and the roving twist coefficient is 104; the specific parameters of the spun yarn process of this embodiment are: the spun yarn is spun into polyester-cotton blended yarn through a spun yarn frame, the spun yarn spindle speed is 9800rpm, the twist coefficient is 144, and the yarn count is 39.

[0049] A production process of a textile base fabric of this embodiment includes the following steps: S1. The polyester-cotton blended yarn of this embodiment is interwoven on a loom according to the set warp and weft density through a plain weave process to weave an initial base fabric; the specific parameters of the weaving process of this embodiment are: warp tension of 92cN, warp density of 46 yarns / cm, weft density of 39 yarns / cm, and loom speed of 312r / min.

[0050] S2. The initial base is placed in a water bath at 72°C for cleaning for 26 minutes to remove oil and impurities on the surface of the yarn; S3. The cleaned substrate was placed in a vacuum drying oven and dried at 90°C for 5 hours. The dried substrate was placed in a flattening device for tentering finishing; the tentering tension was 115N, the finishing temperature was 117°C, and the finishing time was 39s.

[0051] S4. The flatness and warp and weft density of the finished base fabric are tested, and the preparation of the textile base fabric is completed when it meets the standards.

[0052] Embodiment 3 A textile base fabric, the textile base fabric of this embodiment is woven from polyester-cotton blended yarn through a plain weave process; The polyester-cotton blended yarn of this embodiment is obtained by spinning flame-retardant and antibacterial fiber, polyester fiber and cotton fiber in a mass ratio of 31:44:21; The flame-retardant and antibacterial fiber of this embodiment is prepared from the following components in parts by weight: 8 parts of surface-modified magnesium hydroxide / zinc oxide composite filler, 3.6 parts of nitrogen-phosphorus-containing flame retardant, 1.6 parts of copper sulfate, 36 parts of polyacrylonitrile, 4 parts of anhydrous ethanol, 4 parts of polyvinyl pyrrolidone, 2 parts of ethylenediaminetetraacetic acid, and 100 parts of dimethyl sulfoxide; The surface-modified magnesium hydroxide / zinc oxide composite filler of the present embodiment is obtained by surface-modifying the magnesium hydroxide / zinc oxide composite filler with 3-aminopropyltriethoxysilane; the magnesium hydroxide / zinc oxide composite filler comprises zinc oxide whiskers and magnesium hydroxide nanowires loaded on the surface of the zinc oxide whiskers of the present embodiment; the magnesium hydroxide nanowires are uniformly distributed on the surface of the zinc oxide whiskers in a divergent manner in an in-situ growth manner; the nitrogen-phosphorus-containing flame retardant is obtained by a condensation reaction of hexachlorocyclotriphosphazene and p-aminobenzenesulfonic acid.

[0053] The preparation method of the surface modified magnesium hydroxide / zinc oxide composite filler of the present embodiment is as follows: in parts by weight, 104 parts of magnesium hydroxide / zinc oxide composite filler, 5 parts of 3-aminopropyltriethoxysilane and 13 parts of anhydrous ethanol are mixed, and the mixture is stirred at 76° C. for 192 minutes. After the stirring is completed, the solid powder is collected by filtration, and then the solid powder is washed twice with anhydrous ethanol. Finally, the washed solid powder is dried at 86° C. to constant weight to obtain the surface modified magnesium hydroxide / zinc oxide composite filler.

[0054] The preparation method of the magnesium hydroxide / zinc oxide composite filler of the present embodiment is as follows: by weight, 26 parts of zinc oxide whiskers are added to 130 parts of deionized water, 1.6 parts of sodium dodecyl sulfate are added, and the mixture is stirred at a stirring rate of 420 rpm for 26 minutes to obtain a zinc oxide whisker dispersion; 16 parts of 0.8 mol / L magnesium sulfate solution are slowly added to the dispersion, and the reaction temperature is controlled to 72°C, and stirring is continued for 24 minutes, and then 32 parts of 0.7 mol / L sodium hydroxide solution, controlling the dropping rate to 1.6L / min, and adjusting the pH to 11, keeping the reaction solution stirred at 92°C for 32min; transferring the mixed solution to a hydrothermal reactor, and carrying out a hydrothermal reaction at 138°C for 10h; after the reaction is completed, cooling to room temperature, collecting the precipitate by centrifugation, and washing the precipitate with deionized water for 4 times to remove impurities; placing the obtained precipitate in a vacuum drying oven at 92°C and drying it for 396min, and then grinding it to a particle size of 200 mesh to obtain a magnesium hydroxide / zinc oxide composite filler.

[0055] The preparation method of the zinc oxide whisker of the present embodiment is as follows: by weight, 16 parts of zinc chloride are dissolved in 130 parts of deionized water, and stirred at a stirring rate of 420 rpm for 26 minutes; then, 26 parts of hexamethylenetetramine are added to the solution, the stirring rate is maintained at 420 rpm, and stirring is continued for 16 minutes to form a precursor solution; the precursor solution is transferred to a reactor, and a hydrothermal reaction is carried out at 108° C. for 10 hours; after the reaction is completed, the reactor is cooled to room temperature, the obtained reaction solution is separated by centrifugation, and the generated precipitate is collected; the precipitate is washed with deionized water for 4 times, and the washed precipitate is placed in a vacuum drying oven at 92° C. and dried for 7 hours; the dried precipitate is placed in a muffle furnace, heated to 470° C. at a heating rate of 5° C. / min, and calcined for 3 hours, and cooled to room temperature after calcination; the obtained product is ground to a particle size of 200 mesh to obtain zinc oxide whiskers.

[0056] The mass ratio of zinc oxide whiskers to magnesium hydroxide nanowires in this embodiment is 93:7; the average diameter of zinc oxide whiskers is 1.1 μm, and the average length is 6.9 μm. The average diameter of magnesium hydroxide is 120 nm, and the average length is 6.3 μm.

[0057] The preparation method of the nitrogen-phosphorus-containing flame retardant of the present embodiment is as follows: by weight, 26 parts of p-aminobenzenesulfonic acid and 36 parts of anhydrous acetonitrile are added to a three-necked flask with a condenser, and 8 parts of hexachlorocyclotriphosphazene are dissolved in 36 parts of anhydrous acetonitrile to form a hexachlorocyclotriphosphazene solution, which is slowly dripped into the three-necked flask by a dropwise manner, and the stirring reaction is continued under reflux conditions for 39 minutes; then 2 parts of triethylamine are added, and after the addition is completed, the temperature is gradually increased to 74° C., and the reflux reaction is maintained for 10 hours; after the reaction is completed, the reaction mixture is poured into 130 parts of dimethyl sulfoxide, and a hot filtration operation is performed while hot and the filtrate is retained. The obtained filtrate is added to a rotary instrument, and the rotary evaporation temperature is set to 55° C., the reduced pressure condition is 0.093 MPa, and the rotary evaporation time is 39 minutes, and finally a white nitrogen-phosphorus-containing flame retardant is obtained.

[0058] The preparation method of the flame-retardant antibacterial fiber of this embodiment is as follows: surface-modified magnesium hydroxide / zinc oxide composite filler, nitrogen-phosphorus flame retardant, copper sulfate, polyacrylonitrile, anhydrous ethanol, polyvinyl pyrrolidone and ethylenediaminetetraacetic acid are added to a reaction kettle in sequence, and the mixture is stirred at a stirring rate of 420 rpm for 26 minutes to form a uniform mixed solution; the mixed solution is heated to 72° C. and stirred for 78 minutes, and naturally cooled to room temperature after the reaction is completed; the cooled mixed solution is transferred to a vacuum drying oven, vacuum dried at 72° C. for 7 hours to obtain a dry powder for standby use; the dried powder is dissolved in 130 parts of dimethyl sulfoxide solvent, and stirred at 65° C. for 5 hours until a uniform spinning solution is formed; the spinning solution is ejected through a spinneret, the spinneret hole diameter is 0.15 mm, and a wet coagulation process is used to place the ejected fiber in a coagulation bath of 60% by mass ethanol, the coagulation bath temperature is 26° C., and the stretching ratio is 3 times. The stretched fiber is dried in a constant temperature drying oven at 90° C. for 7 hours to obtain a flame-retardant antibacterial fiber.

[0059] The preparation method of the polyester-cotton blended yarn of the present embodiment comprises the following steps: uniformly mixing the flame-retardant and antibacterial fiber, the polyester fiber and the cotton fiber according to the mass ratio, and preparing the polyester-cotton blended yarn by the following process; spinning the yarn by opening, carding, drawing, roving and spinning processes to obtain the polyester-cotton blended yarn of the present embodiment; the specific parameters of the opening process of the present embodiment are: the mixed fiber raw material is processed by an opening machine, the opening roller speed is 1040rpm, the opening time is 3min, and a uniform and loose fiber bundle is formed; the specific parameters of the combing process of the present embodiment are: the opened fibers are combed into a fiber web by a carding machine, and the card clothing speed of the carding machine is 1 250m / min, the fiber web quantitative is 26g / m²; the specific parameters of the drawing process of this embodiment are: the carded fiber web is combined through a drawing frame, the drawing machine speed is 260m / min, the drawing times are 3 times, and a uniform fiber strip is formed; the specific parameters of the roving process of this embodiment are: the drawn fiber strip is spun into roving through a roving frame, the roving frame speed is 650rpm, and the roving twist coefficient is 144; the specific parameters of the spun yarn process of this embodiment are: the spun yarn is spun into polyester-cotton blended yarn through a spun yarn frame, the spun yarn spindle speed is 9800rpm, the twist coefficient is 144, and the yarn count is 39.

[0060] A production process of a textile base fabric of this embodiment includes the following steps: S1. The polyester-cotton blended yarn of this embodiment is interwoven on a loom according to the set warp and weft density through a plain weave process to weave an initial base fabric; the specific parameters of the weaving process of this embodiment are: warp tension of 92cN, warp density of 46 yarns / cm, weft density of 39 yarns / cm, and loom speed of 312r / min.

[0061] S2. The initial base is placed in a water bath at 72°C for cleaning for 26 minutes to remove oil and impurities on the surface of the yarn; S3. The cleaned substrate was placed in a vacuum drying oven and dried at 90°C for 5 hours. The dried substrate was placed in a flattening device for tentering finishing; the tentering tension was 115N, the finishing temperature was 117°C, and the finishing time was 39s.

[0062] S4. The flatness and warp and weft density of the finished base fabric are tested, and the preparation of the textile base fabric is completed when it meets the standards.

[0063] Embodiment 4 A textile base fabric, the textile base fabric of this embodiment is woven from polyester-cotton blended yarn through a plain weave process; The polyester-cotton blended yarn of this embodiment is obtained by spinning flame-retardant and antibacterial fiber, polyester fiber and cotton fiber in a mass ratio of 35:50:25; The flame-retardant and antibacterial fiber of this embodiment is prepared from the following components in parts by weight: 10.0 parts of surface-modified magnesium hydroxide / zinc oxide composite filler, 4.5 parts of nitrogen-phosphorus-containing flame retardant, 2.0 parts of copper sulfate, 40 parts of polyacrylonitrile, 5.0 parts of anhydrous ethanol, 5.0 parts of polyvinyl pyrrolidone, 3.0 parts of ethylenediaminetetraacetic acid, and 100 parts of dimethyl sulfoxide; The surface-modified magnesium hydroxide / zinc oxide composite filler of the present embodiment is obtained by surface-modifying the magnesium hydroxide / zinc oxide composite filler with 3-aminopropyltriethoxysilane; the magnesium hydroxide / zinc oxide composite filler comprises zinc oxide whiskers and magnesium hydroxide nanowires loaded on the surface of the zinc oxide whiskers of the present embodiment; the magnesium hydroxide nanowires are uniformly distributed on the surface of the zinc oxide whiskers in a divergent manner in an in-situ growth manner; the nitrogen-phosphorus-containing flame retardant is obtained by a condensation reaction of hexachlorocyclotriphosphazene and p-aminobenzenesulfonic acid.

[0064] The preparation method of the surface modified magnesium hydroxide / zinc oxide composite filler of the present embodiment is as follows: in parts by weight, 120 parts of magnesium hydroxide / zinc oxide composite filler, 6.0 parts of 3-aminopropyltriethoxysilane and 15 parts of anhydrous ethanol are mixed, and the mixture is stirred at 80° C. for 240 minutes. After the stirring is completed, the solid powder is collected by filtration, and then the solid powder is washed twice with anhydrous ethanol. Finally, the washed solid powder is dried at 90° C. to constant weight to obtain the surface modified magnesium hydroxide / zinc oxide composite filler.

[0065] The preparation method of the magnesium hydroxide / zinc oxide composite filler of the present embodiment is as follows: by weight, 30 parts of zinc oxide whiskers are added to 150 parts of deionized water, 2.0 parts of sodium dodecyl sulfate are added, and the mixture is stirred at a stirring rate of 500 rpm for 30 minutes to obtain a zinc oxide whisker dispersion; 20 parts of 1.0 mol / L magnesium sulfate solution are slowly added to the dispersion, and the reaction temperature is controlled to 80°C, and stirring is continued for 30 minutes, and then 40 parts of 0.8 mol / L sodium hydroxide solution, controlling the dropping rate to 2.0L / min, and adjusting the pH to 12, keeping the reaction solution stirring at 100℃ for 40min; transferring the mixed solution to a hydrothermal reactor, and carrying out hydrothermal reaction at 150℃ for 12h; after the reaction is completed, cooling to room temperature, collecting the precipitate by centrifugation, and washing the precipitate with deionized water for 5 times to remove impurities; placing the obtained precipitate in a vacuum drying oven at 100℃ and drying it for 420min, and then grinding it to a particle size of 200 mesh to obtain a magnesium hydroxide / zinc oxide composite filler.

[0066] The preparation method of the zinc oxide whisker of the present embodiment is as follows: by weight, 20 parts of zinc chloride are dissolved in 150 parts of deionized water, and stirred at a stirring rate of 500 rpm for 30 minutes; then, 30 parts of hexamethylenetetramine are added to the solution, the stirring rate is maintained at 500 rpm, and stirring is continued for 20 minutes to form a precursor solution; the precursor solution is transferred to a reactor, and a hydrothermal reaction is carried out at 120° C. for 12 hours; after the reaction is completed, the reactor is cooled to room temperature, the obtained reaction solution is separated by centrifugation, and the generated precipitate is collected; the precipitate is washed with deionized water 5 times, and the washed precipitate is placed in a vacuum drying oven at 100° C. and dried for 8 hours; the dried precipitate is placed in a muffle furnace, heated to 600° C. at a heating rate of 5° C. / min, and calcined for 4 hours, and cooled to room temperature after calcination; the obtained product is ground to a particle size of 200 mesh to obtain zinc oxide whiskers.

[0067] The mass ratio of zinc oxide whiskers to magnesium hydroxide nanowires in this embodiment is 95:10; the average diameter of zinc oxide whiskers is 1.5 μm, and the average length is 8.0 μm. The average diameter of magnesium hydroxide is 150 nm, and the average length is 8.0 μm.

[0068] The preparation method of the nitrogen-phosphorus-containing flame retardant of the present embodiment is as follows: by weight, 30 parts of p-aminobenzenesulfonic acid and 40 parts of anhydrous acetonitrile are added to a three-necked flask with a condenser, and 10 parts of hexachlorocyclotriphosphazene are dissolved in 30 parts of anhydrous acetonitrile to form a hexachlorocyclotriphosphazene solution, which is slowly dripped into the three-necked flask by a dropwise manner, and the stirring reaction is continued under reflux conditions for 60 minutes; then 2.5 parts of triethylamine are added, and after the addition is completed, the temperature is gradually increased to 75°C, and the reflux reaction is maintained for 12 hours; after the reaction is completed, the reaction mixture is poured into 150 parts of dimethyl sulfoxide, and a hot filtration operation is performed while hot and the filtrate is retained. The obtained filtrate is added to a rotary instrument, and the rotary evaporation temperature is set to 60°C, the reduced pressure condition is 0.095 MPa, and the rotary evaporation time is 60 minutes, and finally a white nitrogen-phosphorus-containing flame retardant is obtained.

[0069] The preparation method of the flame-retardant antibacterial fiber of this embodiment is as follows: adding surface-modified magnesium hydroxide / zinc oxide composite filler, nitrogen-phosphorus-containing flame retardant, copper sulfate, polyacrylonitrile, anhydrous ethanol, polyvinyl pyrrolidone and ethylenediaminetetraacetic acid to a reaction kettle in sequence, stirring the mixture at a stirring rate of 500 rpm for 30 minutes to form a uniform mixed solution; heating the mixed solution to 80°C, stirring for 120 minutes, and naturally cooling to room temperature after the reaction is completed; transferring the cooled mixed solution to a vacuum drying oven, and vacuum drying at 80°C The fiber was dried in air for 8 hours to obtain a dry powder for use; the dried powder was dissolved in 150 parts of dimethyl sulfoxide solvent and stirred at 70°C for 6 hours until a uniform spinning solution was formed; the spinning solution was ejected through a spinneret with a spinneret hole diameter of 0.2 mm; a wet coagulation process was used to place the ejected fiber in a coagulation bath of 70% by mass ethanol at a coagulation bath temperature of 30°C and a stretching multiple of 5 times; the stretched fiber was dried in a constant temperature drying oven at 100°C for 8 hours to obtain a flame retardant and antibacterial fiber.

[0070] The preparation method of the polyester-cotton blended yarn of the present embodiment comprises the following steps: uniformly mixing the flame-retardant and antibacterial fiber, the polyester fiber and the cotton fiber according to the mass ratio, and preparing the polyester-cotton blended yarn by the following process; spinning the yarn by opening, carding, drawing, roving and spinning processes to obtain the polyester-cotton blended yarn of the present embodiment; the specific parameters of the opening process of the present embodiment are: the mixed fiber raw material is processed by an opening machine, the opening roller speed is 1200rpm, the opening time is 5min, and a uniform and loose fiber bundle is formed; the specific parameters of the combing process of the present embodiment are: the opened fibers are combed into a fiber web by a carding machine, and the card clothing speed of the carding machine is 1 500m / min, the fiber web quantitative is 30g / m²; the specific parameters of the drawing process of this embodiment are: the carded fiber web is combined through a drawing frame, the drawing machine speed is 300m / min, the drawing times are 4 times, and a uniform fiber strip is formed; the specific parameters of the roving process of this embodiment are: the drawn fiber strip is spun into roving through a roving frame, the roving frame speed is 800rpm, and the roving twist coefficient is 120; the specific parameters of the spun yarn process of this embodiment are: the spun yarn is spun into polyester-cotton blended yarn through a spun yarn frame, the spun yarn spindle speed is 12000rpm, the twist coefficient is 180, and the yarn count is 50.

[0071] A production process of a textile base fabric of this embodiment includes the following steps: S1. The polyester-cotton blended yarn of this embodiment is interwoven on a loom according to the set warp and weft density through a plain weave process to weave an initial base fabric; the specific parameters of the weaving process of this embodiment are: warp tension of 120 cN, warp density of 60 yarns / cm, weft density of 50 yarns / cm, and loom speed of 400 r / min.

[0072] S2. The initial base is placed in a water bath at 80°C for cleaning for 40 minutes to remove oil and impurities on the surface of the yarn; S3. The cleaned substrate was placed in a vacuum drying oven and dried at 100°C for 6 hours. The dried substrate was placed in a flattening device for tentering finishing; the tentering tension was 150N, the finishing temperature was 130°C, and the finishing time was 60s.

[0073] S4. The flatness and warp and weft density of the finished base fabric are tested, and the preparation of the textile base fabric is completed when it meets the standards.

[0074] Comparative Example 1 The method is basically the same as Example 1, except that the magnesium hydroxide / zinc oxide composite filler is not surface modified.

[0075] Comparative Example 2 The method is basically the same as Example 1, except that the magnesium hydroxide nanowires in the magnesium hydroxide / zinc oxide composite filler are commercial magnesium hydroxide powder purchased from Weifang Wanfeng New Materials Technology Co., Ltd., and the magnesium hydroxide and zinc oxide are added separately.

[0076] In the comparative example, the preparation method of the surface modified magnesium hydroxide / zinc oxide composite filler is as follows: in parts by weight, 76 parts of zinc oxide whiskers, 4 parts of magnesium hydroxide powder, 3.0 parts of 3-aminopropyltriethoxysilane and 10 parts of anhydrous ethanol are mixed, stirred at 70° C. for 120 minutes, and after stirring, the solid powder is filtered and collected, and then the solid powder is washed twice with anhydrous ethanol, and finally the washed solid powder is placed at 80° C. and dried to constant weight to obtain a surface modified magnesium hydroxide / zinc oxide composite filler.

[0077] Comparative Example 3 The method is basically the same as Example 1, except that the zinc oxide and magnesium hydroxide in the magnesium hydroxide / zinc oxide composite filler are purchased commercial zinc oxide powder and magnesium hydroxide powder, the zinc oxide powder is provided by Shijiazhuang Dayou Zinc Industry Co., Ltd., and the magnesium hydroxide powder is provided by Weifang Wanfeng New Materials Technology Co., Ltd., and the magnesium hydroxide and zinc oxide are added separately.

[0078] In the comparative example, the preparation method of the surface modified magnesium hydroxide / zinc oxide composite filler is as follows: in parts by weight, 76 parts of zinc oxide powder, 4 parts of magnesium hydroxide powder, 3.0 parts of 3-aminopropyltriethoxysilane and 10 parts of anhydrous ethanol are mixed, stirred at 70° C. for 120 minutes, and after stirring, the solid powder is filtered and collected, and then the solid powder is washed twice with anhydrous ethanol, and finally the washed solid powder is placed at 80° C. and dried to constant weight to obtain a surface modified magnesium hydroxide / zinc oxide composite filler.

[0079] Comparative Example 4 The method is basically the same as Example 1, except that the surface-modified magnesium hydroxide / zinc oxide composite filler is not added to the flame-retardant antibacterial fiber.

[0080] Comparative Example 5 The method is basically the same as Example 1, except that no nitrogen-phosphorus-containing flame retardant is added to the flame-retardant antibacterial fiber.

[0081] Performance Test: Antibacterial property: The antibacterial property test adopts GB / T 20944.3-2008 "Evaluation of antibacterial properties of textiles Part 3: Oscillation method". Prepare the culture medium, culture and dilute the bacterial solution according to the requirements of 4.3.2.2 of the standard. Place the sample in a constant temperature shaker at 24℃±1℃ and 150 r / min for 18 hours. Take 1mL of the solution and shake it for 10 2 , 10 3 , 10 4 The bacterial solution was diluted to 1×10 9 ~5×10 9 CFU / mL. Calculate the concentration of live bacteria in the sample conical flask, and use the antibacterial rate to express the antibacterial effect of the textile base fabric.

[0082] Mechanical properties: The mechanical properties were tested using an electronic universal testing machine (SANS UTM2102, China). The sample was mounted in a fixture, stretched to break after setting the stretching rate, and the tensile strength and elongation of the textile base fabric were analyzed by recording the force-displacement curve.

[0083] Flame retardant properties: The flame retardant test adopts ASTM D2863 standard, and uses an oxygen index meter (JF-3, China) to measure the limited oxygen index (LOI) of the textile base fabric. By adjusting the oxygen concentration in the mixed gas and observing the continuous burning time or ignition of the sample, the minimum oxygen concentration required to maintain combustion, that is, the LOI value, is determined to evaluate the flame retardant properties and fire safety of the material.

[0084] The properties of the textile base fabrics of Examples 1 to 4 and Comparative Examples 1 to 5 are summarized in Table 1.

[0085] Table 1 Properties of textile base fabrics of Examples 1 to 4 and Comparative Examples 1 to 5 The main difference between Comparative Example 1 and Example 1 is that Comparative Example 1 does not use surface-modified magnesium hydroxide / zinc oxide composite filler. As can be seen from Table 1, the absence of surface modification will significantly reduce the antibacterial rate (from 99.5% to 85.4%), limited oxygen index (from 32.6 to 30.1), tensile strength (from 65.4 MPa to 60.2 MPa) and elongation (from 23.8% to 20.5%). This is because surface modification can generate chemical bonds on the filler surface through 3-aminopropyltriethoxysilane, improve the interface bonding between the filler and the matrix, thereby improving the mechanical properties, antibacterial properties and flame retardant properties of the composite material. In Comparative Example 1, the unmodified magnesium hydroxide / zinc oxide composite filler has poor dispersibility and cannot fully exert the synergistic effect, resulting in performance degradation.

[0086] The main difference between Comparative Example 2 and Example 1 is that the magnesium hydroxide nanowires in Comparative Example 2 are replaced with commercial magnesium hydroxide powder, and magnesium hydroxide and zinc oxide whiskers are added separately. As can be seen from Table 1, this change leads to a decrease in the limited oxygen index (from 32.6 to 30.5), a slight decrease in the antibacterial rate (from 99.5% to 97.6%), and a decrease in tensile strength (from 65.4 MPa to 62.5 MPa), but a slight increase in elongation (from 23.8% to 21.8%). This is because the commercial magnesium hydroxide powder has larger particles and lower surface activity, and cannot form a uniform composite structure with zinc oxide whiskers, which reduces the synergistic flame retardant and antibacterial ability of the composite filler. However, due to the larger particles of the commercial powder, its dispersibility in the matrix is ​​better, so the elongation is slightly improved, but other properties are still significantly lower than those of Example 1.

[0087] The main difference between Comparative Example 3 and Example 1 is that Comparative Example 3 uses commercial zinc oxide powder and magnesium hydroxide powder, and both are added separately, rather than a composite filler prepared by in-situ growth technology. As can be seen from Table 1, this change leads to a significant decrease in the limited oxygen index (from 32.6 to 28.7), a significant decrease in the antibacterial rate (from 99.5% to 78.3%), a decrease in tensile strength (from 65.4 MPa to 58.9 MPa), and a slight decrease in elongation (from 23.8% to 20.4%). This is because the in-situ growth technology enables magnesium hydroxide nanowires to be evenly distributed on the surface of zinc oxide whiskers, thereby enhancing the synergistic flame retardancy and antibacterial properties of the composite filler, while the commercial powder has larger particles and poor interface bonding, resulting in a significant decrease in performance. In addition, the separate addition of powder makes the dispersion of the filler in the matrix uneven, further affecting the mechanical properties and flame retardant properties.

[0088] The main difference between Comparative Example 4 and Example 1 is that the surface-modified magnesium hydroxide / zinc oxide composite filler is not added to the flame-retardant and antibacterial fiber of Comparative Example 4. As can be seen from Table 1, this change leads to a significant decrease in the limited oxygen index (from 32.6 to 25.3), a significant decrease in the antibacterial rate (from 99.5% to 65.2%), a decrease in tensile strength (from 65.4 MPa to 55.6 MPa), and a decrease in elongation (from 23.8% to 19.8%). This is because the surface-modified magnesium hydroxide / zinc oxide composite filler can not only provide good flame retardancy, but also give the fiber significant antibacterial properties and enhance the bonding between the fiber and the matrix interface. In Comparative Example 4, the failure to add the composite filler resulted in a significant decrease in the flame retardancy and antibacterial properties of the fiber, and the lack of the reinforcing effect of the filler also significantly reduced the mechanical properties.

[0089] The main difference between Comparative Example 5 and Example 1 is that no nitrogen-phosphorus-containing flame retardant is added to the flame-retardant and antibacterial fiber of Comparative Example 5. As can be seen from Table 1, this change leads to a significant decrease in the limited oxygen index (from 32.6 to 24.1), a significant decrease in the antibacterial rate (from 99.5% to 63.8%), and a decrease in the tensile strength (from 65.4 MPa to 59.1 MPa), but the elongation does not change much (from 23.8% to 20.5%). This is because nitrogen-phosphorus-containing flame retardants can significantly improve the flame retardant properties of the fiber through synergistic effects, and have an inhibitory effect on certain bacteria, thereby enhancing the antibacterial properties. In Comparative Example 5, the absence of the addition of nitrogen-phosphorus-containing flame retardants reduces the flame retardant properties of the fiber to the lowest level, and the antibacterial properties are also seriously affected. However, since the elongation is mainly controlled by the toughness of the matrix material, the absence of the addition of flame retardants has little effect on the elongation, so the elongation does not change much.

[0090] In summary, there is a significant synergistic effect between the components, and their joint effect is the key to achieving the comprehensive performance improvement of textile base fabrics. The surface-modified magnesium hydroxide / zinc oxide composite filler is modified by 3-aminopropyltriethoxysilane to form a chemical bond on the filler surface, which significantly improves the dispersion and interfacial bonding of the filler in the matrix, thereby improving the flame retardancy, antibacterial and mechanical properties. Zinc oxide whiskers provide a flame retardant barrier at high temperatures, while magnesium hydroxide nanowires enhance the flame retardant properties by decomposing heat and releasing water molecules; the antibacterial properties of zinc oxide whiskers are superimposed on the dispersion effect of magnesium hydroxide to further improve the antibacterial properties. Nitrogen-phosphorus flame retardants generate non-flammable gases through thermal decomposition, forming a protective layer on the fiber surface, working in synergy with composite fillers to significantly improve the flame retardant properties of textile base fabrics, and at the same time have an inhibitory effect on certain bacteria, and are superimposed on the antibacterial properties of zinc oxide whiskers to significantly improve the antibacterial rate. In addition, polyester-cotton blended yarn, as a matrix fiber, provides basic mechanical properties and flexibility, and further improves the overall tensile strength and elongation through interfacial bonding with surface-modified fillers and flame retardants. The optimized preparation process (such as in-situ growth technology, surface modification technology and wet spinning process) ensures the uniform distribution and stable combination of each component in the matrix. The in-situ growth technology makes the magnesium hydroxide nanowires evenly distributed on the surface of zinc oxide whiskers to form a stable composite structure, improving flame retardancy and antibacterial properties; surface modification technology improves the interface bonding between fillers and matrix fibers and improves mechanical properties; wet spinning process further improves the uniformity and overall performance of the fibers. The lack of any key component or process optimization will lead to a weakening or complete loss of the synergistic effect, thereby significantly reducing the overall performance of the material. For example, the use of unmodified fillers, commercial powders or the absence of flame retardants in the comparative examples all led to a significant decrease in antibacterial rate, flame retardancy and mechanical properties, indicating that synergy is indispensable in improving material performance.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that all equivalent structural changes made under the concept of the present invention and using the contents of the present invention specification and drawings should be covered within the scope of protection of the claims of the present invention.

Claims

1. A textile base fabric, characterized in that: The textile base fabric is woven from polyester-cotton blended yarn by a plain weave process; The polyester-cotton blended yarn is obtained by spinning flame-retardant and antibacterial fiber, polyester fiber and cotton fiber in a mass ratio of (25-35): (35-50): (15-25); The flame retardant antibacterial fiber is prepared from the following components in parts by weight: 5.0-10.0 parts of surface modified magnesium hydroxide / zinc oxide composite filler, 2.0-4.5 parts of nitrogen-phosphorus flame retardant, 1.0-2.0 parts of copper sulfate, 30-40 parts of polyacrylonitrile, 3.0-5.0 parts of anhydrous ethanol, 2.0-5.0 parts of polyvinyl pyrrolidone, 1.0-3.0 parts of ethylenediaminetetraacetic acid, and 100 parts of dimethyl sulfoxide; The surface-modified magnesium hydroxide / zinc oxide composite filler is obtained by surface-modifying the magnesium hydroxide / zinc oxide composite filler with 3-aminopropyltriethoxysilane; The magnesium hydroxide / zinc oxide composite filler comprises zinc oxide whiskers and magnesium hydroxide nanowires supported on the surface of the zinc oxide whiskers; The magnesium hydroxide nanowires are uniformly distributed on the surface of the zinc oxide whiskers in a divergent manner in an in-situ growth manner; The nitrogen-phosphorus-containing flame retardant is obtained by condensation reaction of hexachlorocyclotriphosphazene and p-aminobenzenesulfonic acid.

2. A textile base fabric according to claim 1, characterized in that: The preparation method of the surface modified magnesium hydroxide / zinc oxide composite filler is as follows: by weight, 80-120 parts of magnesium hydroxide / zinc oxide composite filler, 3.0-6.0 parts of 3-aminopropyltriethoxysilane and 10-15 parts of anhydrous ethanol are mixed, stirred at 70-80° C. for 120-240 minutes, and after stirring, solid powder is collected by filtering, then the solid powder is washed twice with anhydrous ethanol, and finally the washed solid powder is placed at 80-90° C. and dried to constant weight to obtain a surface modified magnesium hydroxide / zinc oxide composite filler.

3. A textile base fabric according to claim 1 or 2, characterized in that: The preparation method of the magnesium hydroxide / zinc oxide composite filler is as follows: by weight, 20 to 30 parts of zinc oxide whiskers are added to 100 to 150 parts of deionized water, 1.0 to 2.0 parts of sodium dodecyl sulfate are added, and the mixture is stirred at a stirring rate of 300 to 500 rpm for 20 to 30 minutes to obtain a zinc oxide whisker dispersion; 10 to 20 parts of 0.5 to 1.0 mol / L magnesium sulfate solution are slowly added to the dispersion, and the reaction temperature is controlled to be 60 to 80°C, stirring is continued for 15 to 30 minutes, and then 20 to 40 parts of 0.5 to 0.8 mol / L sodium hydroxide solution, control the dropping rate to 1.0~2.0L / min, adjust the pH to 10~12, keep the reaction solution stirring at 80~100℃ for 20~40min; transfer the mixed solution to a hydrothermal reactor, and carry out hydrothermal reaction at 120~150℃ for 8~12h; after the reaction is completed, cool to room temperature, collect the precipitate by centrifugation, and wash the precipitate with deionized water for 3~5 times to remove impurities; place the obtained precipitate in a vacuum drying oven at 80~100℃ and dry it for 360~420min, and then grind it to a particle size of 200 mesh to obtain a magnesium hydroxide / zinc oxide composite filler.

4. A textile base fabric according to claim 3, characterized in that: The preparation method of the zinc oxide whisker is as follows: by weight, 10 to 20 parts of zinc chloride are dissolved in 100 to 150 parts of deionized water, and stirred at a stirring rate of 300 to 500 rpm for 20 to 30 minutes; then, 20 to 30 parts of hexamethylenetetramine are added to the solution, the stirring rate is maintained at 300 to 500 rpm, and stirring is continued for 10 to 20 minutes to form a precursor solution; The precursor solution was transferred to a reactor and subjected to a hydrothermal reaction at 90-120°C for 8-12 h. After the reaction was completed, the reactor was cooled to room temperature, the reaction solution was separated by centrifugation, and the generated precipitate was collected. The precipitate was washed with deionized water for 3-5 times, and the washed precipitate was placed in a vacuum drying oven at 80-100°C for 6-8 h. The dried precipitate was placed in a muffle furnace, heated to 400-600°C at a heating rate of 5°C / min, and calcined for 2-4 h, and then cooled to room temperature after calcination. The obtained product was ground to a particle size of 200-300 mesh to obtain zinc oxide whiskers.

5. A textile base fabric according to claim 1, characterized in that: The mass ratio of the zinc oxide whiskers and the magnesium hydroxide nanowires is (90-95): (5-10); The zinc oxide whiskers have an average diameter of 0.5-1.5 μm and an average length of 4.5-8.0 μm; The average diameter of the magnesium hydroxide is 50-150 nm, and the average length is 3.5-8.0 μm.

6. A textile base fabric according to claim 1, characterized in that: The preparation method of the nitrogen-phosphorus-containing flame retardant is as follows: by weight, 20 to 30 parts of p-aminobenzenesulfonic acid and 30 to 40 parts of anhydrous acetonitrile are added to a three-necked flask with a condenser, and 5.0 to 10.0 parts of hexachlorocyclotriphosphazene are dissolved in 30 parts of anhydrous acetonitrile to form a hexachlorocyclotriphosphazene solution, which is slowly dripped into the three-necked flask by a dropwise manner, and the stirring reaction is continued for 30 to 60 minutes under reflux conditions; then 1.5 to 2.5 parts of triethylamine are added, and after the addition is completed, the temperature is gradually increased to 70 to 75° C., and the reflux reaction is maintained for 8 to 12 hours; after the reaction is completed, the reaction mixture is poured into 100 to 150 parts of dimethyl sulfoxide, and a hot filtration operation is performed while hot and the filtrate is retained, and the obtained filtrate is added to a rotary instrument, and the rotary evaporation temperature is set to 50 to 60° C., and the decompression condition is 0.09 to 0.095 MPa, the rotary evaporation time is 30~60min, and finally a white nitrogen-phosphorus-containing flame retardant is obtained.

7. A textile base fabric according to claim 1, characterized in that: The preparation method of the flame-retardant antibacterial fiber is as follows: adding surface-modified magnesium hydroxide / zinc oxide composite filler, nitrogen-phosphorus-containing flame retardant, copper sulfate, polyacrylonitrile, anhydrous ethanol, polyvinyl pyrrolidone and ethylenediaminetetraacetic acid into a reaction kettle in sequence, stirring the mixture at a stirring rate of 300-500 rpm for 20-30 minutes to form a uniform mixed solution; heating the mixed solution to 60-80° C., stirring for 60-120 minutes, and naturally cooling to room temperature after the reaction is completed; transferring the cooled mixed solution to a vacuum drying oven, and drying at 60-80° C. The fiber was dried under vacuum for 6-8 hours to obtain dry powder for use; the dried powder was dissolved in 100 parts of dimethyl sulfoxide solvent and stirred at 60-70°C for 4-6 hours until a uniform spinning solution was formed; the spinning solution was ejected through a spinneret with a spinneret hole diameter of 0.1-0.2 mm; a wet coagulation process was used to place the ejected fiber in a coagulation bath of 50-70% ethanol by mass, the coagulation bath temperature was 20-30°C, the stretching ratio was 2-5 times, and the stretched fiber was dried in a constant temperature drying oven at 80-100°C for 6-8 hours to obtain a flame-retardant and antibacterial fiber.

8. A textile base fabric according to claim 1, characterized in that: The preparation method of the polyester-cotton blended yarn comprises the following steps: uniformly mixing flame-retardant and antibacterial fiber, nylon fiber and cotton fiber according to a mass ratio, and preparing the polyester-cotton blended yarn through the following processes; spinning through opening, carding, drawing, roving and spinning processes to obtain the polyester-cotton blended yarn; the specific parameters of the opening process are: the mixed fiber raw material is processed by an opening machine, the opening roller speed is 800-1200rpm, the opening time is 2-5min, and a uniform and loose fiber bundle is formed; the specific parameters of the combing process are: the opened fibers are combed into a fiber web by a carding machine, the card clothing speed of the carding machine is 1000-1500m / min, and the fiber The web quantity is 20~30g / m²; the specific parameters of the drawing process are: the carded fiber web is combined through a drawing frame, the drawing speed is 200~300m / min, the drawing times are 2~4 times, and a uniform fiber strip is formed; the specific parameters of the roving process are: the drawn fiber strip is spun into roving through a roving frame, the roving frame speed is 500~800rpm, and the roving twist coefficient is 80~120; the specific parameters of the spun yarn process are: the spun yarn is spun into polyester-cotton blended yarn through a spun yarn frame, the spun yarn frame spindle speed is 8000~12000rpm, the twist coefficient is 120~180, and the yarn count is 30~50.

9. The production process of a textile base fabric according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. The polyester-cotton blended yarn is interwoven on a loom according to the set warp and weft density through a plain weave process to weave an initial base fabric; the specific parameters of the weaving process are: warp tension of 80~120cN, warp density of 40~60 yarns / cm, weft density of 30~50 yarns / cm, and loom speed of 200~400r / min; S2. The initial substrate is placed in a water bath at 60-80°C for cleaning for 20-40 minutes to remove oil and impurities on the surface of the yarn; S3. The cleaned substrate is placed in a vacuum drying oven and dried at 80-100°C for 4-6 hours. The dried substrate is placed in a flattening device for stentering. The tentering tension is 80~150N, the finishing temperature is 100~130℃, and the finishing time is 30~60s; S4. The flatness and warp and weft density of the finished base fabric are tested, and the preparation of the textile base fabric is completed after it meets the standards.

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