阅读说明：本技术 防护服面料及其制备方法 (Protective clothing fabric and preparation method thereof ) 是由 杨雅茹 肖云超 唐柏林 沈小军 季亚明 李佳倩 郭健鑫 于 2020-12-07 设计创作，主要内容包括：本发明涉及防护服面料及其制备方法。防护服面料的制备方法包括如下步骤：将TiO2-SiO2-ZnO杂化纳米溶胶通过涂覆或者浸轧施加到织物面料上,之后先将涂覆或者浸轧后织物面料在60～80℃下干燥10～20分钟,接着在80～100℃下干燥20～30分钟,然后将处理后的织物面料在蒸馏水中煮沸60～90分钟；将马来酸苷和长链烷基三甲氧基硅烷溶于无水乙醇中搅拌均匀成,然后在室温下,将制备得到的织物面料在制备得到的混合溶液中浸泡60～90分钟,最后在100～120℃下保温30～60分钟。本发明处理后的织物面料不含致癌的卤化物和氟化物,且同时具有优良的自清洁性能、超疏水性和阻燃性,并且不影响织物的透气性。(The invention relates to a protective clothing fabric and a preparation method thereof. The preparation method of the protective clothing fabric comprises the following steps: applying TiO2-SiO2-ZnO hybrid nano sol to a fabric through coating or padding, drying the coated or padded fabric for 10-20 minutes at 60-80 ℃, then drying the coated or padded fabric for 20-30 minutes at 80-100 ℃, and then boiling the treated fabric in distilled water for 60-90 minutes; dissolving maleic acid glycoside and long-chain alkyl trimethoxy silane in absolute ethyl alcohol, uniformly stirring to obtain the fabric, soaking the prepared fabric in the prepared mixed solution at room temperature for 60-90 minutes, and finally preserving heat at 100-120 ℃ for 30-60 minutes. The fabric treated by the method does not contain carcinogenic halide and fluoride, has excellent self-cleaning performance, super-hydrophobicity and flame retardance, and does not influence the air permeability of the fabric.)

1. A preparation method of protective clothing fabric is characterized by comprising the following steps:

(1) adding TiO into the mixture₂-SiO₂the-ZnO hybrid nano sol is applied to the fabric through coating or padding, the coated or padded fabric is dried for 10-20 minutes at the temperature of 60-80 ℃, then dried for 20-30 minutes at the temperature of 80-100 ℃,

(2) then, boiling the fabric treated in the step (1) in distilled water for 60-90 minutes;

(3) dissolving maleic acid glycoside and long-chain alkyl trimethoxy silane in absolute ethyl alcohol, and uniformly stirring to obtain a mixed solution, wherein the mass ratio of the maleic acid glycoside to the long-chain alkyl trimethoxy silane to the absolute ethyl alcohol is 20-30: 5-10: 100, respectively;

(4) and (3) soaking the fabric prepared in the step (2) in the mixed solution prepared in the step (3) for 60-90 minutes at room temperature, and finally preserving heat at 100-120 ℃ for 30-60 minutes.

2. The method for preparing fabric for protective clothing according to claim 1, wherein the TiO is₂-SiO₂the-ZnO hybrid nano sol is prepared by the following method:

mixing titanium tetraisopropoxide and isopropanol at room temperature, and stirring for 5-8 minutes to form an isopropanol solution of the titanium tetraisopropoxide;

mixing tetraethyl orthosilicate and isopropanol at room temperature, and stirring for 5-8 minutes to form isopropanol solution of tetraethyl orthosilicate;

mixing the zinc nitrate water solution and the citric acid water solution at room temperature, and stirring for 5-8 minutes to form a zinc nitrate and citric acid water solution;

mixing the isopropanol solution of titanium tetraisopropoxide prepared in the step I, the isopropanol solution of tetraethyl orthosilicate prepared in the step II and the water solution of zinc nitrate citric acid prepared in the step III, and then continuously stirring for 10-60 minutes to obtain the TiO₂-SiO₂-ZnO hybrid nanosol;

in the step I, the volume ratio of titanium tetraisopropoxide to isopropanol is 1: 2-4;

in the second step, the volume ratio of tetraethyl orthosilicate to isopropanol is 1: 40-60;

in the third step, the mass ratio of the zinc nitrate to the citric acid in the citric acid aqueous solution is 1: 1-1.5,

the volume ratio of the isopropanol solution of titanium tetraisopropoxide prepared in the step I to the isopropanol solution of tetraethyl orthosilicate prepared in the step II to the water solution of zinc nitrate and citric acid prepared in the step III is 12-15: 6-9: 8 to 10.

3. The method for preparing fabric for protective clothing according to claim 2, wherein the TiO is₂-SiO₂In the step I of the preparation method of the-ZnO hybrid nano sol, the volume ratio of titanium tetraisopropoxide to isopropanol is 1: 3;

in the second step, the volume ratio of tetraethyl orthosilicate to isopropanol is 1: 50;

in the step (c), the mass ratio of the zinc nitrate to the citric acid in the citric acid aqueous solution is 1:1.

4. The method for preparing the fabric for the protective clothing, according to claim 1, is characterized in that: the weight gain of the coated or padded fabric in the step (1) is 80-90%.

5. The method for preparing the fabric for the protective clothing, according to claim 1, is characterized in that: in the step (3), the long-chain alkyl trimethoxy silane comprises an alkyl chain with at least 12 carbon atoms.

6. The method for preparing the fabric of the protective clothing, according to claim 5, is characterized in that: the long-chain alkyl trimethoxy silane is one or the combination of more than two of dodecyl trimethoxy silane, hexadecyl trimethoxy silane and octadecyl trimethoxy silane.

7. The method for preparing the fabric for the protective clothing, according to claim 1, is characterized in that: the fabric is a terylene, pure cotton, polyester-cotton blended fabric or a chinlon fabric.

8. The fabric for the protective clothing is characterized in that: prepared by the method of any one of claims 1 to 7.

Technical Field

The invention relates to a protective clothing fabric and a preparation method thereof.

Technical Field

With the development of science and technology and the progress of society, workers in more and more fields are required to wear protective clothing for operations, such as fire protection, military industry, chemical industry, paint spraying, laboratories and the like. Meanwhile, the multifunctional protective clothing fabric also meets the requirements of multifunction, and the protective clothing fabric often meets the requirements of water resistance, self-cleaning, flame retardance, heat insulation, good air permeability and the like. However, at present, the protective clothing in China is still imported from foreign companies such as DuPont, Spbererein, and Nuos in America, and the research, development and production of the fabric of the domestic protective clothing are still in a growing stage.

The traditional method for endowing textile fabric with waterproofness is to carry out after-treatment on the textile fabric by adopting a fluoride finishing agent, but the carcinogenicity of fluoride has great harm to the health of human bodies. More importantly, it is often difficult to impart two or more functionalities simultaneously on a fabric because multiple finish interactions can change each other's inherent properties, and in particular it is more difficult to impart water repellency and self-cleaning properties simultaneously to a fabric because self-cleaning occurs by relying on hydrophilicity, which requires the fabric surface to be hydrophobic, which are essentially a pair of conflicting properties. Therefore, finding suitable matching agents and methods to simultaneously impart water repellency and self-cleaning to fabrics remains a challenge in the functional textile field.

The advent of nanotechnology has brought eosin to traditional chemical, physical or physicochemical modification methods. Among many inorganic oxide nanoparticles, TiO₂The nanometer TiO is widely concerned due to the characteristics of no toxicity, physical and chemical stability, low cost and the like₂The particles exhibit high photocatalytic activity due to their large surface area, which helps them to promote the diffusion of surface-generated charge carriers under light irradiation, and thus, nano-TiO₂Can be used as an excellent photocatalytic material. Nano SiO₂The nano-silver/nano-silver composite material has the characteristics of no toxicity, low density, large specific surface area, good dispersibility and the like, has excellent stability, reinforcing property, thixotropy and optical and mechanical properties, and has important significance for upgrading of some traditional products. The nano ZnO is a novel multifunctional inorganic material and has the characteristics of high transparency, high dispersibility and the like. In addition, the surface electronic structure and the crystal structure of the material show a plurality of special functions in the aspects of catalysis, optics, magnetism, mechanics and the like, and the material can be used for ultraviolet light shielding materials, antibacterial agents, fluorescent materials, photocatalytic materials and the like in the textile field. In addition, the research confirms that the nano TiO₂Granular, nano SiO₂And nano ZnO can also be used as a flame retardant or a flame retardant synergist for plastics, rubber or textiles.

The prior art discloses the use of nano TiO₂And nano SiO₂Endows the fabric with self-cleaning performance, but will be ready-made nano TiO₂And nano TiO₂The particles are mixed into the finishing liquid, the particle size is larger, the self-cleaning effect is limited, and the air permeability of the fabric is reduced. In addition, in order to impart hydrophobicity to the fabric, carcinogenic fluoride is used, which may cause harm to human health.

Disclosure of Invention

The protective clothing fabric prepared by the method does not contain carcinogenic halide and fluoride, has excellent self-cleaning performance, super-hydrophobicity and flame retardance, does not influence the air permeability of fabrics, and meets the requirement of the protective clothing fabric on multifunctionality.

The invention is realized by the following technical scheme:

scheme I)

A preparation method of protective clothing fabric comprises the following steps:

(1) adding TiO into the mixture₂-SiO₂the-ZnO hybrid nano sol is applied to the fabric through coating or padding, the coated or padded fabric is dried for 10-20 minutes at the temperature of 60-80 ℃, then dried for 20-30 minutes at the temperature of 80-100 ℃,

(2) then, boiling the fabric treated in the step (1) in distilled water for 60-90 minutes;

(3) dissolving maleic acid glycoside and long-chain alkyl trimethoxy silane in absolute ethyl alcohol, and uniformly stirring to obtain a mixed solution, wherein the mass ratio of the maleic acid glycoside to the long-chain alkyl trimethoxy silane to the absolute ethyl alcohol is 20-30: 5-10: 100, respectively;

(4) and (3) soaking the fabric prepared in the step (2) in the mixed solution prepared in the step (3) for 60-90 minutes at room temperature, and finally preserving heat at 100-120 ℃ for 30-60 minutes.

Further, the TiO is₂-SiO₂the-ZnO hybrid nano sol is prepared by the following method:

mixing titanium tetraisopropoxide and isopropanol at room temperature, and stirring for 5-8 minutes to form an isopropanol solution of the titanium tetraisopropoxide;

mixing tetraethyl orthosilicate and isopropanol at room temperature, and stirring for 5-8 minutes to form isopropanol solution of tetraethyl orthosilicate;

mixing the zinc nitrate water solution and the citric acid water solution at room temperature, and stirring for 5-8 minutes to form a zinc nitrate and citric acid water solution;

mixing the isopropanol solution of titanium tetraisopropoxide prepared in the step I, the isopropanol solution of tetraethyl orthosilicate prepared in the step II and the water solution of zinc nitrate citric acid prepared in the step III, and then continuously stirring for 10-60 minutes to obtain the TiO₂-SiO₂-ZnO hybrid nanosol;

in the step I, the volume ratio of titanium tetraisopropoxide to isopropanol is 1: 2-4;

in the second step, the volume ratio of tetraethyl orthosilicate to isopropanol is 1: 40-60;

in the third step, the mass ratio of the zinc nitrate to the citric acid in the citric acid aqueous solution is 1: 1-1.5,

the volume ratio of the isopropanol solution of titanium tetraisopropoxide prepared in the step I to the isopropanol solution of tetraethyl orthosilicate prepared in the step II to the water solution of zinc nitrate and citric acid prepared in the step III is 12-15: 6-9: 8 to 10.

Further, the TiO is₂-SiO₂In the step I of the preparation method of the-ZnO hybrid nano sol, the volume ratio of titanium tetraisopropoxide to isopropanol is 1: 3;

in the second step, the volume ratio of tetraethyl orthosilicate to isopropanol is 1: 50;

in the step (c), the mass ratio of the zinc nitrate to the citric acid in the citric acid aqueous solution is 1:1.

Further, the weight gain rate of the fabric coated or padded in the step (1) is 80-90%.

Further, in the step (3), the long-chain alkyl trimethoxy silane contains an alkyl chain with at least 12 carbon atoms.

Furthermore, the long-chain alkyl trimethoxy silane is one or any combination of more than two of dodecyl trimethoxy silane, hexadecyl trimethoxy silane and octadecyl trimethoxy silane.

Furthermore, the fabric is polyester, pure cotton, polyester-cotton blended fabric or chinlon fabric.

Scheme two)

A protective clothing fabric is prepared by the method.

Compared with the prior art, the invention has the following beneficial effects: 1. the fabric treated by the method does not contain carcinogenic halide and fluoride, has excellent self-cleaning performance, super-hydrophobicity and flame retardance, and does not influence the air permeability of the fabric.

2. The sol-gel of the present invention is applied to a fabric to form TiO₂-SiO₂After the ZnO hybrid nano particles are small in size, continuous, uniform and crackle adhesion can be realized on fibers, and gaps of the fabric are not covered, so that the air permeability of the fabric is not obviously influenced.

3. The preparation method is simple in preparation process, adopts a low-temperature sol-gel method and a hydrothermal method to replace a high-temperature method, is mild in processing conditions, is not limited by the thermal stability of fabrics, and is suitable for most textile fabrics.

Drawings

Fig. 1 is a scanning electron microscope image of a polyester protective clothing fabric provided in embodiment 4 of the present invention.

Fig. 2 shows the coffee stain degradation result of the fabric for the polyester protective clothing provided in embodiment 4 of the present invention.

Fig. 3 is a flame retardant test result of the fabric for the polyester protective clothing provided in embodiment 4 of the present invention.

Detailed Description

The present invention will be further described with reference to the following examples. The following examples are only preferred embodiments of the present invention and are not intended to limit the present invention in any way.

Example 1

TiO₂-SiO₂The preparation method of the-ZnO hybrid nano sol comprises the following steps:

mixing titanium tetraisopropoxide and isopropanol at room temperature, and stirring for 5 minutes to form an isopropanol solution of the titanium tetraisopropoxide;

mixing tetraethyl orthosilicate and isopropanol at room temperature, and stirring for 5 minutes to form isopropanol solution of tetraethyl orthosilicate;

mixing zinc nitrate and citric acid aqueous solution at room temperature, and stirring for 5 minutes to form aqueous solution of zinc nitrate and citric acid;

isopropanol solution of titanium tetraisopropoxide prepared in the step I, isopropanol solution of tetraethyl orthosilicate prepared in the step II and water of zinc nitrate citric acid prepared in the step IIIMixing the solution, and then continuing to stir for 10 minutes to obtain the TiO₂-SiO₂-ZnO hybrid nanosol;

in the step I, the volume ratio of titanium tetraisopropoxide to isopropanol is 1: 3;

in the second step, the volume ratio of tetraethyl orthosilicate to isopropanol is 1: 44;

in the step III, the mass ratio of the zinc nitrate to the citric acid in the citric acid aqueous solution is 1: 1;

the volume ratio of the isopropanol solution of titanium tetraisopropoxide prepared in the step I, the isopropanol solution of tetraethyl orthosilicate prepared in the step II and the aqueous solution of zinc nitrate and citric acid prepared in the step III is 12: 9: 10.

a preparation method of protective clothing fabric comprises the following steps:

(1) the TiO obtained above is mixed₂-SiO₂-ZnO hybrid nanosol is applied to the textile fabric by padding, and the coated or padded fabric is then dried first for 10 minutes at 80 ℃ and then for 30 minutes at 100 ℃, (TiO is allowed)₂-SiO₂-ZnO hybrid nanoparticles crosslinked in situ on the fabric)

(2) And (3) dissolving the maleic acid glycoside and the long-chain alkyl trimethoxy silane in absolute ethyl alcohol, and uniformly stirring to obtain a mixed solution, wherein the mass fraction ratio of the maleic acid glycoside to the long-chain alkyl trimethoxy silane to the absolute ethyl alcohol is 20: 5: 100, respectively;

(4) and (3) soaking the fabric prepared in the step (2) in the mixed solution prepared in the step (3) at room temperature for 90 minutes, and finally, preserving the heat at 120 ℃ for 60 minutes.

In this example, the weight gain of the coated or padded fabric in step (1) is 80%.

The long-chain alkyl trimethoxy silane in step (3) of this example is dodecyl trimethoxy silane.

The fabric described in this embodiment is polyester, and generally, the fabric needs to be pretreated first: soaking the polyester fabric in 2% sodium hydroxide water solution, pretreating at 95 ℃ for 20 minutes, fully washing with water, and drying.

The water contact angle of the prepared terylene protective clothing fabric is 143 degrees, the coffee stain degradation rate within 5 hours under the irradiation of ultraviolet rays is 71.4 percent, the limiting oxygen index is 27.2 percent (more than or equal to 27 percent is nonflammable), and the air permeability is reduced by 9.5 percent compared with the original fabric.

Example 2

TiO₂-SiO₂The preparation method of the-ZnO hybrid nano sol comprises the following steps:

mixing titanium tetraisopropoxide and isopropanol at room temperature, and stirring for 8 minutes to form an isopropanol solution of the titanium tetraisopropoxide;

mixing tetraethyl orthosilicate and isopropanol at room temperature, and stirring for 8 minutes to form isopropanol solution of tetraethyl orthosilicate;

mixing zinc nitrate and citric acid aqueous solution at room temperature, and stirring for 8 minutes to form aqueous solution of zinc nitrate and citric acid;

mixing isopropanol solution of titanium tetraisopropoxide prepared in the step I, isopropanol solution of tetraethyl orthosilicate prepared in the step II and water solution of zinc nitrate citric acid prepared in the step III, and then continuously stirring for 60 minutes to obtain the TiO₂-SiO₂-ZnO hybrid nanosol;

in the step I, the volume ratio of titanium tetraisopropoxide to isopropanol is 1: 4;

in the second step, the volume ratio of tetraethyl orthosilicate to isopropanol is 1: 59;

in the step III, the mass ratio of the zinc nitrate to the citric acid in the citric acid aqueous solution is 1: 1.5;

the volume ratio of the isopropanol solution of titanium tetraisopropoxide prepared in the step I, the isopropanol solution of tetraethyl orthosilicate prepared in the step II and the aqueous solution of zinc nitrate and citric acid prepared in the step III is 15: 6: 10.

a preparation method of protective clothing fabric comprises the following steps:

(1) the TiO obtained above is mixed₂-SiO₂the-ZnO hybrid nano sol is applied to the fabric by coating or padding, and then the coated or padded fabric is dried at 60 ℃ for 10-20 minutes and then dried at 80 ℃ for 20 minutes (so that TiO is formed)₂-SiO₂-ZnO hybrid nanoparticles crosslinked in situ on the fabric)

(2) Then boiling 60 the textile fabric treated in step (1) in distilled water to obtain a nanoparticle crystalline phase and removing non-adhered or loosely adhered nanoparticles from the substrate,

(3) dissolving maleic acid glycoside and long-chain alkyl trimethoxy silane in absolute ethyl alcohol, and uniformly stirring to obtain a mixed solution, wherein the mass fraction ratio of the maleic acid glycoside to the long-chain alkyl trimethoxy silane to the absolute ethyl alcohol is 30: 10: 100, respectively;

(4) and (3) soaking the fabric prepared in the step (2) in the mixed solution prepared in the step (3) at room temperature for 60 minutes, and finally, preserving the heat at 100 ℃ for 30 minutes.

In this example, the weight gain of the coated or padded fabric in step (1) is 90%.

The long-chain alkyl trimethoxy silane in step (3) of this example is hexadecyl trimethoxy silane.

The fabric described in this embodiment is a pure cotton fabric. The pure cotton fabric is required to be dried after being pretreated by desizing, boiling, bleaching and mercerizing.

The water contact angle of the prepared pure cotton protective clothing fabric is 137 degrees, the coffee stain degradation rate within 5 hours under ultraviolet irradiation is 45.4 percent, the limiting oxygen index is 28.3 percent, and the air permeability is reduced by 7.8 percent compared with the original fabric.

Example 3

TiO₂-SiO₂The preparation method of the-ZnO hybrid nano sol comprises the following steps:

mixing titanium tetraisopropoxide and isopropanol at room temperature, and stirring for 6 minutes to form an isopropanol solution of the titanium tetraisopropoxide;

mixing tetraethyl orthosilicate and isopropanol at room temperature, and stirring for 6 minutes to form isopropanol solution of tetraethyl orthosilicate;

mixing zinc nitrate and citric acid aqueous solution at room temperature, and stirring for 6 minutes to form aqueous solution of zinc nitrate and citric acid;

mixing isopropanol solution of titanium tetraisopropoxide prepared in the step I, isopropanol solution of tetraethyl orthosilicate prepared in the step II and water solution of zinc nitrate citric acid prepared in the step III, and then continuously stirring for 30 minutes to obtain the TiO₂-SiO₂-ZnO hybrid nanosol;

in the step I, the volume ratio of titanium tetraisopropoxide to isopropanol is 1: 3.3;

in the second step, the volume ratio of tetraethyl orthosilicate to isopropanol is 1: 60;

in the step III, the mass ratio of the zinc nitrate to the citric acid in the citric acid aqueous solution is 1: 1.2;

the volume ratio of the isopropanol solution of titanium tetraisopropoxide prepared in the step I, the isopropanol solution of tetraethyl orthosilicate prepared in the step II and the aqueous solution of zinc nitrate and citric acid prepared in the step III is 13: 8: 8.

a preparation method of protective clothing fabric comprises the following steps:

(1) the TiO obtained above is mixed₂-SiO₂-ZnO hybrid nanosol is applied to the fabric by coating or padding, and the coated or padded fabric is dried first at 70 ℃ for 15 minutes and then at 900 ℃ for 25 minutes (TiO is allowed to go)₂-SiO₂-ZnO hybrid nanoparticles crosslinked in situ on the fabric)

(2) Then boiling the fabric facing treated in the step (1) in distilled water for 80 minutes to obtain a nanoparticle crystal phase and removing non-adhered or loosely adhered nanoparticles from the substrate,

(3) dissolving maleic acid glycoside and long-chain alkyl trimethoxy silane in absolute ethyl alcohol, and uniformly stirring to obtain a mixed solution, wherein the mass fraction ratio of the maleic acid glycoside to the long-chain alkyl trimethoxy silane to the absolute ethyl alcohol is 25: 8: 100, respectively;

(4) and (3) soaking the fabric prepared in the step (2) in the mixed solution prepared in the step (3) for 80 minutes at room temperature, and finally, preserving the heat at 110 ℃ for 40 minutes.

In this example, the weight gain of the coated or padded fabric in step (1) is 85%.

In step (3) of this embodiment, the long-chain alkyl trimethoxysilane is octadecyl trimethoxysilane.

Preferably, the fabric is a nylon fabric. Pretreating a nylon fabric: boiling nylon fabric in 5g/L sodium carbonate water solution for 20 min, taking out, washing with clear water, and drying at 85 deg.C.

The water contact angle of the prepared nylon protective clothing fabric is 145 degrees, the coffee stain degradation rate within 5 hours under ultraviolet irradiation is 55.9 percent, the limiting oxygen index is 28.2 percent, and the air permeability is reduced by 9.8 percent compared with the original fabric.

Comparative example 1

(1) 5g of nano TiO₂1g of nano SiO₂And 0.9g of nano ZnO particles are added into 210ml of isopropanol and ultrasonically shaken for 10 minutes at normal temperature to prepare finishing liquid.

(2) Pretreating the polyester fabric: soaking the polyester fabric in 2% sodium hydroxide water solution, pretreating at 95 ℃ for 20 minutes, fully washing with water, and drying. And (2) applying the finishing liquid prepared in the step (1) to the pretreated polyester woven fabric through a padding method, wherein the weight gain of the padded polyester woven fabric is 80%. The padded fabric was then dried first at 80 ℃ for 10 minutes and then at 100 ℃ for 30 minutes.

(3)5 parts of long-chain alkyl trimethoxy silane is dissolved in 100 parts of absolute ethyl alcohol and uniformly stirred to prepare a solution E. Soaking the fabric treated in the step (3) in the solution E for 90 minutes, and then curing at 120 ℃ for 60 minutes.

The water contact angle of the terylene fabric prepared by the method is 120 degrees, the coffee stain degradation rate within 5 hours under the irradiation of ultraviolet rays is 23.4 percent, the limiting oxygen index is 23.9 percent, and the air permeability is reduced by 18.8 percent compared with the original fabric.

Comparative example 2

(1) 4g of nano TiO₂0.7g of nano SiO₂And 0.9g of nano ZnO particles are added into 180ml of isopropanol and ultrasonically shaken for 10 minutes at normal temperature to prepare finishing liquid.

(2) And (3) carrying out pretreatment of desizing, boiling, bleaching and mercerizing on the pure cotton fabric, and then drying. Applying the finishing liquid obtained in the step (1) to a pretreated pure cotton fabric through a padding method, wherein the weight gain of the padded fabric is 90%, then drying the padded fabric at 80 ℃ for 10 minutes, then drying at 100 ℃ for 20 minutes to convert the nano sol into gel, and evaporating the solvent, so that TiO is converted into gel₂-SiO₂-ZnO hybrid nanoparticles are crosslinked in situ on the fabric.

(3) And (3) soaking the fabric treated in the step (2) in a weak cationic fluorocarbon waterproofing agent 9033 solution with the concentration of 6g/L for 90 minutes, and then drying at 100 ℃.

The water contact angle of the terylene fabric prepared by the method is 150 degrees, the coffee stain degradation rate within 5 hours under the irradiation of ultraviolet rays is 21.2 percent, the limiting oxygen index is 23.5 percent, and the air permeability is reduced by 36.3 percent compared with the original fabric.

Comparative example 3

(1) 5g of nano TiO₂0.9g of nano SiO₂And 0.7g of nano ZnO particles are added into 210ml of isopropanol and ultrasonically shaken for 30 minutes at normal temperature to prepare finishing liquid.

(2) Pretreating a nylon fabric: boiling nylon fabric in 5g/L sodium carbonate water solution for 20 min, taking out, washing with clear water, and drying at 85 deg.C. And (2) applying the finishing liquid prepared in the step (1) to the pretreated polyester woven fabric through a padding method, wherein the weight gain of the padded polyester woven fabric is 85%. The padded fabric was then dried first at 80 ℃ for 10 minutes and then at 100 ℃ for 30 minutes.

(3) And (3) soaking the fabric treated in the step (2) in a weak cationic fluorocarbon waterproofing agent 9033 solution with the concentration of 6g/L for 90 minutes, and then drying at 100 ℃.

The water contact angle of the nylon fabric prepared by the method is 150 degrees, the coffee stain degradation rate within 5 hours under ultraviolet irradiation is 24.2 percent, the limited oxygen index is 21.5 percent, and the air permeability is reduced by 39.1 percent compared with the original fabric.

Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.