阅读说明：本技术 一种防菌无纺布制作工艺 (Manufacturing process of antibacterial non-woven fabric ) 是由 李学梅 于 2021-01-04 设计创作，主要内容包括：本发明公开了一种防菌无纺布制作工艺,包括以下步骤：第一步、制备疏水抗菌浸渍液；第二步、对无纺布表面进行绒面处理,通过刷子在无纺布的两侧进行摩擦,使无纺布表面的纹理遭到破坏,形成绒面；第三步、将第二步处理后的无纺布在第一步得到的疏水抗菌浸渍液中浸泡70-80min,浸泡结束后,将无纺布取出,于40-60℃烘箱中干燥至恒重,即得所述防菌无纺布；以无纺布为原料,通过制备出疏水抗菌浸渍液,进而将无纺布在疏水抗菌浸渍液浸泡,随后烘干,由于浸渍液中盐酸多巴胺会自聚合产生聚多巴胺层,赋予物料疏水性能,改性抗菌剂和耐磨填料不仅赋予无纺布抗菌抗氧化功能,还具有耐摩擦、耐水洗和抗紫外线功能。(The invention discloses a manufacturing process of an antibacterial non-woven fabric, which comprises the following steps: firstly, preparing hydrophobic antibacterial impregnation liquid; secondly, performing suede treatment on the surface of the non-woven fabric, and rubbing the two sides of the non-woven fabric through a brush to destroy textures on the surface of the non-woven fabric to form a suede; step three, soaking the non-woven fabric treated in the step two in the hydrophobic antibacterial impregnation liquid obtained in the step one for 70-80min, taking out the non-woven fabric after soaking is finished, and drying the non-woven fabric in an oven at 40-60 ℃ to constant weight to obtain the antibacterial non-woven fabric; the preparation method comprises the steps of taking a non-woven fabric as a raw material, preparing a hydrophobic antibacterial steeping liquor, further soaking the non-woven fabric in the hydrophobic antibacterial steeping liquor, drying, enabling a polydopamine layer to be generated by self-polymerization of dopamine hydrochloride in the steeping liquor, enabling the material to have hydrophobic performance, and enabling the modified antibacterial agent and the wear-resistant filler to have the antibacterial and antioxidant functions, and also have the functions of friction resistance, water washing resistance and ultraviolet resistance.)

1. The manufacturing process of the antibacterial non-woven fabric is characterized by comprising the following steps of:

firstly, preparing hydrophobic antibacterial impregnation liquid;

secondly, performing suede treatment on the surface of the non-woven fabric, and rubbing the two sides of the non-woven fabric through a brush to destroy textures on the surface of the non-woven fabric to form a suede;

and step three, soaking the non-woven fabric treated in the step two in the hydrophobic antibacterial impregnation liquid obtained in the step one for 70-80min, taking out the non-woven fabric after soaking is finished, and drying in an oven at 40-60 ℃ to constant weight to obtain the antibacterial non-woven fabric.

2. The manufacturing process of the antibacterial non-woven fabric according to claim 1, wherein the preparation method of the hydrophobic antibacterial impregnation liquid comprises the following steps:

under the condition of room temperature, placing tris (hydroxyamino) methane, dopamine hydrochloride and water in a beaker, magnetically stirring for 30-50min, adding a hydrochloric acid solution with the concentration of 1mol/L into the beaker to adjust the pH value to 8.5, then adding a modified antibacterial agent and an abrasion-resistant filler into the beaker, and stirring for 3-4h under the condition of the rotation speed of 300-.

3. The manufacturing process of the antibacterial non-woven fabric according to claim 2, wherein the mass ratio of the tris (hydroxyamino) methane to the dopamine hydrochloride to the water to the modified antibacterial agent to the wear-resistant filler is 1.2: 2: 95-98: 1-3: 1-3.

4. The manufacturing process of the antibacterial non-woven fabric according to claim 2, wherein the modified antibacterial agent is prepared by the following steps:

step S11, under the ice bath condition, adding deionized water, ethylenediamine and a silver nitrate solution with the mass fraction of 1% into a beaker, stirring at the rotating speed of 50-80r/min for 10min, adding a sodium borohydride solution with the concentration of 250mmol/L into the beaker, increasing the rotating speed to 100 and 200r/min, stirring for reaction for 5min, transferring into a dialysis bag, dialyzing in distilled water for 12-15h, and finally drying at the temperature of 60-80 ℃ to constant weight to obtain an intermediate 1;

step S12, adding chitosan and acetic acid solution with the mass fraction of 1% into a three-mouth flask, heating in a water bath at 50-60 ℃, stirring at the rotation speed of 80r/min for 10-15min, heating to 80 ℃, then dropwise adding oleic acid into the three-mouth flask, controlling the dropwise adding speed to be 1-3 drops/second, stirring at the rotation speed of 150r/min for reaction while dropwise adding, after dropwise adding, carrying out heat preservation reaction for 24h under the condition of keeping out of the sun, centrifuging the reaction product once at the rotation speed of 12000r/min, washing the precipitate once with absolute ethyl alcohol, then transferring into a dialysis bag, alternately dialyzing with absolute ethyl alcohol and deionized water for 2 times, each time for 12h, and finally carrying out freeze drying at-45 ℃ for 5-10h to obtain an intermediate 2;

step S13, adding the intermediate 2 and an acetic acid solution with the mass fraction of 1% into a reaction kettle, stirring at the rotation speed of 75r/min at the temperature of 50-55 ℃ for 10-20min, and adding N-acetylcysteine, 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride, N-hydroxysuccinimide and deionized water according to the dosage ratio of 0.2 g: 0.6 g: 0.3 g: adding 30-40mL of the mixed solution into a beaker, uniformly mixing to obtain a mixed solution a, then dropwise adding the mixed solution a into a reaction kettle, stirring at the rotation speed of 100 plus materials for 200r/min while dropwise adding, carrying out heat preservation reaction for 24 hours under the condition of keeping out of the sun after dropwise adding is finished, centrifuging a product once by using absolute ethyl alcohol after the reaction is finished, washing a precipitate for 3-5 hours by using deionized water, transferring the precipitate into a dialysis bag, respectively dialyzing for 12 hours by using a hydrochloric acid solution with the concentration of 1mmol/L, a sodium chloride solution with the mass fraction of 1% and a hydrochloric acid solution with the concentration of 0.2 mmol/L, and finally carrying out freeze drying at the temperature of-48 ℃ to constant weight;

step S14, adding the intermediate 1 and an ethanol solution with the mass fraction of 30% into a beaker, performing ultrasonic dispersion for 20min at the frequency of 30-50kHz to obtain an intermediate 1 dispersion liquid, adding the intermediate 3 and deionized water into a reaction kettle, performing ultrasonic dispersion for 20min at the frequency of 45kHz, adding the intermediate 1 dispersion liquid into the reaction kettle, stirring and reacting for 5-8h under the condition of the rotation speed of 200 and 300r/min, dialyzing for 12h in distilled water, and performing freeze drying for 5-10h at the temperature of-45 ℃ to obtain the modified antibacterial agent.

5. The manufacturing process of the antibacterial non-woven fabric according to claim 4, wherein the usage ratio of the deionized water, the ethylenediamine, the silver nitrate solution and the sodium borohydride solution in the step S11 is 40-50 mL: 500. mu.L: 500. mu.L: 300 mu L; in the step S12, the using amount ratio of the chitosan to the acetic acid solution to the oleic acid is1 g: 70mL of: 2-3 mL; in the step S13, the dosage ratio of the intermediate 2, the acetic acid solution and the mixed solution a is1 g: 70-80 mL: 30 mL; in the step S14, the dosage ratio of the intermediate 1, the ethanol solution, the intermediate 3 and the deionized water is 10 g: 30-40 mL: 1-3 g: 10 mL.

6. The manufacturing process of the antibacterial non-woven fabric according to claim 2, wherein the preparation method of the wear-resistant filler comprises the following steps:

step S21, adding 2, 4-dihydroxy benzophenone and acetone into a reaction kettle, stirring for 10min at a rotation speed of 50r/min, then transferring into a three-neck flask with a reflux condenser tube, adding epichlorohydrin into the three-neck flask, heating to 80 ℃, stirring and reacting at a rotation speed of 100 and 200r/min, adding a sodium hydroxide solution with the mass fraction of 2.5% into the three-neck flask while stirring, continuously reacting for 2h without changing the rotation speed after dropwise addition to obtain a mixture b, extracting the mixture b with ethyl acetate, removing an organic solvent through rotary evaporation, and finally purifying with a silica gel chromatographic column to obtain yellow powder, and performing vacuum drying for 12h at a temperature of 50 ℃ to obtain modified UV-0;

step S22, adding silicon carbide and toluene into a three-neck flask, adding a silane coupling agent KH-550 under 100 ℃ reflux, stirring and reacting for 4 hours under the conditions of 100-200r/min of rotation speed, centrifuging the obtained product under the condition of 10000r/min of rotation speed, and washing the precipitate with toluene for three times to obtain modified silicon carbide;

and S23, adding the modified silicon carbide and toluene into a three-neck flask, adding the modified UV-0 into the three-neck flask at the rotation speed of 200-300r/min, stirring for 12-15h at 40 ℃, centrifuging at the rotation speed of 12000r/min, washing the precipitate for 3-5 times by using toluene, and finally drying for 24h in a vacuum box at 60 ℃ to obtain the wear-resistant filler.

7. The process of claim 6, wherein the ratio of the amounts of the 2, 4-dihydroxybenzophenone, acetone, epichlorohydrin and sodium hydroxide solution in step S21 is 2-3 g: 20mL of: 5 g: 20 mL; in the step S22, the dosage ratio of the silicon carbide to the toluene to the silane coupling agent KH-550 is 4 g: 200mL of: 0.3-0.5 g; the dosage ratio of the modified silicon carbide, the toluene and the modified UV-0 in the step S23 is 4 g: 150-180 mL: 0.5 g.

Technical Field

The invention belongs to the technical field of non-woven fabric preparation, and particularly relates to a manufacturing process of an antibacterial non-woven fabric.

Background

The non-woven fabric has the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity, no irritation, rich color, low price, recycling and the like, is a novel fiber product which is formed by directly utilizing high polymer slices, short fibers or filaments through various fiber web forming methods and consolidation technologies and has a soft, air permeability and a plane structure, and is deeply favored by consumers based on the excellent physical and chemical properties of the non-woven fabric, and a series of daily necessities made of the non-woven fabric material are shoved to the consumer market, such as carpets made of the non-woven fabric material and clothes made of the non-woven fabric material.

However, the existing non-woven fabric does not have an antibacterial function, because the non-woven fabric has a porous structure, microorganisms are easy to attach to the non-woven fabric, so that the propagation of germs is caused, the fabric is also embrittled and woven to influence the use performance of the non-woven fabric, sweat, sebum, epidermal scraps and the like generated by the metabolism of a human body are easy to absorb to improve nutrient substances for the microorganisms in the use process, peculiar smell is generated to influence the comfort, and the existing non-woven fabric is easy to deform in the washing process, poor in water resistance, poor in yellowing and the like after long-time use, so that the non-woven fabric with good antibacterial performance, water washing resistance and an antioxidant effect is.

Disclosure of Invention

The invention aims to provide a manufacturing process of an antibacterial non-woven fabric.

The technical problems to be solved by the invention are as follows:

in the prior art, the non-woven fabric material has poor antibacterial performance and is easy to lose efficacy, and the non-woven fabric material is easy to be oxidized under the action of ultraviolet rays to generate the phenomena of poor color and toughness, is easy to deform after being washed by water and is not friction-resistant.

The purpose of the invention can be realized by the following technical scheme:

an antibacterial non-woven fabric manufacturing process comprises the following steps:

firstly, preparing hydrophobic antibacterial impregnation liquid;

secondly, performing suede treatment on the surface of the non-woven fabric, and rubbing the two sides of the non-woven fabric through a brush to destroy textures on the surface of the non-woven fabric to form a suede;

and step three, soaking the non-woven fabric treated in the step two in the hydrophobic antibacterial impregnation liquid obtained in the step one for 70-80min, taking out the non-woven fabric after soaking is finished, and drying in an oven at 40-60 ℃ to constant weight to obtain the antibacterial non-woven fabric.

Further, the preparation method of the hydrophobic antibacterial impregnation liquid comprises the following steps:

under the condition of room temperature, placing tris (hydroxyamino) methane, dopamine hydrochloride and water in a beaker, magnetically stirring for 30-50min, adding a hydrochloric acid solution with the concentration of 1mol/L into the beaker to adjust the pH value to 8.5, then adding a modified antibacterial agent and an abrasion-resistant filler into the beaker, and stirring for 3-4h under the condition of the rotation speed of 300-.

Further, the mass ratio of the tris (hydroxyamino) methane, the dopamine hydrochloride, the water, the modified antibacterial agent and the wear-resistant filler is 1.2: 2: 95-98: 1-3: 1-3.

Further, the modified antibacterial agent is prepared by the following steps:

step S11, under the ice bath condition, adding deionized water, ethylenediamine and a silver nitrate solution with the mass fraction of 1% into a beaker, stirring at the rotating speed of 50-80r/min for 10min, adding a sodium borohydride solution with the concentration of 250mmol/L into the beaker, increasing the rotating speed to 100 and 200r/min, stirring for reaction for 5min, transferring into a dialysis bag, dialyzing in distilled water for 12-15h, and finally drying at the temperature of 60-80 ℃ to constant weight to obtain an intermediate 1;

step S12, adding chitosan and acetic acid solution with the mass fraction of 1% into a three-mouth flask, heating in a water bath at 50-60 ℃, stirring at the rotation speed of 80r/min for 10-15min, heating to 80 ℃, then dropwise adding oleic acid into the three-mouth flask, controlling the dropwise adding speed to be 1-3 drops/second, stirring at the rotation speed of 150r/min for reaction while dropwise adding, after dropwise adding, carrying out heat preservation reaction for 24h under the condition of keeping out of the sun, centrifuging the reaction product once at the rotation speed of 12000r/min, washing the precipitate once with absolute ethyl alcohol, then transferring into a dialysis bag, alternately dialyzing with absolute ethyl alcohol and deionized water for 2 times, each time for 12h, and finally carrying out freeze drying at-45 ℃ for 5-10h to obtain an intermediate 2;

step S13, adding the intermediate 2 and an acetic acid solution with the mass fraction of 1% into a reaction kettle, stirring at the rotation speed of 75r/min at the temperature of 50-55 ℃ for 10-20min, and adding N-acetylcysteine, 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride, N-hydroxysuccinimide and deionized water according to the dosage ratio of 0.2 g: 0.6 g: 0.3 g: adding 30-40mL of the mixed solution into a beaker, uniformly mixing to obtain a mixed solution a, then dropwise adding the mixed solution a into a reaction kettle, stirring at the rotation speed of 100 plus materials for 200r/min while dropwise adding, carrying out heat preservation reaction for 24 hours under the condition of keeping out of the sun after dropwise adding is finished, centrifuging a product once by using absolute ethyl alcohol after the reaction is finished, washing a precipitate for 3-5 hours by using deionized water, transferring the precipitate into a dialysis bag, respectively dialyzing for 12 hours by using a hydrochloric acid solution with the concentration of 1mmol/L, a sodium chloride solution with the mass fraction of 1% and a hydrochloric acid solution with the concentration of 0.2 mmol/L, and finally carrying out freeze drying at the temperature of-48 ℃ to constant weight;

step S14, adding the intermediate 1 and an ethanol solution with the mass fraction of 30% into a beaker, performing ultrasonic dispersion for 20min at the frequency of 30-50kHz to obtain an intermediate 1 dispersion liquid, adding the intermediate 3 and deionized water into a reaction kettle, performing ultrasonic dispersion for 20min at the frequency of 45kHz, adding the intermediate 1 dispersion liquid into the reaction kettle, stirring and reacting for 5-8h under the condition of the rotation speed of 200 and 300r/min, dialyzing for 12h in distilled water, and performing freeze drying for 5-10h at the temperature of-45 ℃ to obtain the modified antibacterial agent.

Further, in the step S11, the usage ratio of the deionized water, the ethylenediamine, the silver nitrate solution, and the sodium borohydride solution is 40-50 mL: 500. mu.L: 500. mu.L: 300 mu L; in the step S12, the using amount ratio of the chitosan to the acetic acid solution to the oleic acid is1 g: 70mL of: 2-3 mL; in the step S13, the dosage ratio of the intermediate 2, the acetic acid solution and the mixed solution a is1 g: 70-80 mL: 30 mL; in the step S14, the dosage ratio of the intermediate 1, the ethanol solution, the intermediate 3 and the deionized water is 10 g: 30-40 mL: 1-3 g: 10 mL.

Preparing nano silver with amino on the surface, namely an intermediate 1, by taking silver nitrate and ethylenediamine as raw materials and sodium borohydride as a reducing agent, dispersing chitosan in an acetic acid solution, and adding oleic acid into the solution to enable-NH in chitosan molecules₂The acid amide reacts with-COOH in oleic acid molecules to graft oil acid molecules on chitosan molecules to obtain an intermediate 2, and the intermediate 2 has hydrophobicity due to strong water-based property of the oleic acid molecules; then dispersing the intermediate 2 in acetic acid solution, preparing mixed solution a by taking N-acetylcysteine, 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride, N-hydroxysuccinimide and deionized water as raw materials,activating the carboxyl of N-acetylcysteine, reacting the activated-COOH of N-acetylcysteine with-NH of intermediate 2₂The method comprises the steps of carrying out an amide reaction, grafting hydrophilic molecule N-acetylcysteine on an intermediate 2 to obtain an intermediate 3, enabling the intermediate 3 to have amphiphilic performance due to existence of the N-acetylcysteine and oleic acid, finally preparing a modified antibacterial agent by taking the intermediate 3 as a wall material and taking the intermediate 1 as a core material, wherein the modified antibacterial agent contains nano silver with amino attached to the surface and the intermediate 3 with amphiphilic performance, and the intermediate 3 contains broad-spectrum and efficient antibacterial molecule chitosan, the N-acetylcysteine with an antioxidant function and long-molecule hydrophobic oleic acid, so that the modified antibacterial agent disclosed by the invention has the performances of slow release, durability, high efficiency and antibacterial property, and simultaneously has the performances of oxidation resistance and easy dispersion.

Further, the preparation method of the wear-resistant filler comprises the following steps:

step S21, adding 2, 4-dihydroxy benzophenone and acetone into a reaction kettle, stirring for 10min at a rotation speed of 50r/min, then transferring into a three-neck flask with a reflux condenser tube, adding epichlorohydrin into the three-neck flask, heating to 80 ℃, stirring and reacting at a rotation speed of 100 and 200r/min, adding a sodium hydroxide solution with the mass fraction of 2.5% into the three-neck flask while stirring, continuously reacting for 2h without changing the rotation speed after dropwise addition to obtain a mixture b, extracting the mixture b with ethyl acetate, removing an organic solvent through rotary evaporation, and finally purifying with a silica gel chromatographic column to obtain yellow powder, and performing vacuum drying for 12h at a temperature of 50 ℃ to obtain modified UV-0;

step S22, adding silicon carbide and toluene into a three-neck flask, adding a silane coupling agent KH-550 under 100 ℃ reflux, stirring and reacting for 4 hours under the conditions of 100-200r/min of rotation speed, centrifuging the obtained product under the condition of 10000r/min of rotation speed, and washing the precipitate with toluene for three times to obtain modified silicon carbide;

and S23, adding the modified silicon carbide and toluene into a three-neck flask, adding the modified UV-0 into the three-neck flask at the rotation speed of 200-300r/min, stirring for 12-15h at 40 ℃, centrifuging at the rotation speed of 12000r/min, washing the precipitate for 3-5 times by using toluene, and finally drying for 24h in a vacuum box at 60 ℃ to obtain the wear-resistant filler.

Further, in step S21, the ratio of the 2, 4-dihydroxybenzophenone to the acetone to the epichlorohydrin to the sodium hydroxide solution is 2-3 g: 20mL of: 5 g: 20 mL; in the step S22, the dosage ratio of the silicon carbide to the toluene to the silane coupling agent KH-550 is 4 g: 200mL of: 0.3-0.5 g; the dosage ratio of the modified silicon carbide, the toluene and the modified UV-0 in the step S23 is 4 g: 150-180 mL: 0.5 g.

Performing substitution reaction on ultraviolet absorbent 2, 4-dihydroxy benzophenone and epichlorohydrin to graft an epoxy group on the ultraviolet absorbent 2, 4-dihydroxy benzophenone to obtain modified UV-0, taking silicon carbide as an inorganic material, modifying the silicon carbide by using a silane coupling agent KH-550, and finally utilizing-NH adsorbed on the surface of the silicon carbide by using coupling agent on the surface₂The silicon carbide material is subjected to ring-opening reaction with the epoxy group of the modified UV-0 to obtain the silicon carbide material loaded with the ultraviolet absorbent 2, 4-dihydroxy benzophenone, namely the wear-resistant filler, and the wear-resistant filler has wear resistance and high temperature resistance and simultaneously has an anti-oxidation effect by combining the stable chemical property, good wear resistance and high temperature resistance of the silicon carbide.

The invention has the beneficial effects that:

the invention takes non-woven fabrics as raw materials, hydrophobic antibacterial impregnation liquid is prepared, the non-woven fabrics are further soaked in the hydrophobic antibacterial impregnation liquid and then dried to obtain the antibacterial hydrophobic non-woven fabrics, because dopamine hydrochloride in the impregnation liquid can be polymerized by self to generate a polydopamine layer to endow the materials with hydrophobic performance, silver nitrate and ethylenediamine are taken as raw materials, sodium borohydride is taken as a reducing agent to prepare nano silver with amino on the surface, namely an intermediate 1, chitosan is dispersed in acetic acid solution, and then oleic acid is added into the solution to enable-NH in chitosan molecules₂The acid amide reacts with-COOH in oleic acid molecules to graft oil acid molecules on chitosan molecules to obtain an intermediate 2, and the intermediate 2 has hydrophobicity due to strong water-based property of the oleic acid molecules; then dispersing the intermediate 2 in acetic acid solution, and taking N-acetylcysteine, 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride, N-hydroxysuccinimide and deionized water as raw materialsPreparing a mixed solution a, activating the carboxyl of the N-acetylcysteine, and reacting-COOH of the activated N-acetylcysteine with-NH of the intermediate 2₂An amide reaction is carried out, hydrophilic molecules N-acetylcysteine are grafted on the intermediate 2, an intermediate 3 is obtained, the intermediate 3 has amphiphilic performance due to existence of the N-acetylcysteine and oleic acid, finally, the intermediate 3 is used as a wall material, the intermediate 1 is used as a core material, the modified antibacterial agent is prepared, the modified antibacterial agent contains nano silver with amino attached to the surface and the intermediate 3 with amphiphilic performance, and the intermediate 3 contains broad-spectrum and efficient antibacterial molecules chitosan, the N-acetylcysteine with the antioxidant function and long-molecule hydrophobic oleic acid, so that the modified antibacterial agent has the performances of slow release, durability, high efficiency and antibacterial property and simultaneously has the performances of oxidation resistance and easy dispersion; performing substitution reaction on ultraviolet absorbent 2, 4-dihydroxy benzophenone and epichlorohydrin to graft an epoxy group on the ultraviolet absorbent 2, 4-dihydroxy benzophenone to obtain modified UV-0, taking silicon carbide as an inorganic material, modifying the silicon carbide by using a silane coupling agent KH-550, and finally utilizing-NH adsorbed on the surface of the silicon carbide by using coupling agent on the surface₂The silicon carbide material is subjected to ring-opening reaction with the epoxy group of the modified UV-0 to obtain the silicon carbide material loaded with the ultraviolet absorbent 2, 4-dihydroxy benzophenone, namely the wear-resistant filler, and the wear-resistant filler has wear resistance and high temperature resistance and simultaneously has an anti-oxidation effect by combining the stable chemical property, good wear resistance and high temperature resistance of the silicon carbide; therefore, the antibacterial non-woven fabric prepared by the invention not only has antibacterial and antioxidant functions, but also has the functions of friction resistance, water washing resistance and ultraviolet resistance.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

An antibacterial non-woven fabric manufacturing process comprises the following steps:

firstly, preparing hydrophobic antibacterial impregnation liquid;

secondly, performing suede treatment on the surface of the non-woven fabric, and rubbing the two sides of the non-woven fabric through a brush to destroy textures on the surface of the non-woven fabric to form a suede;

and step three, soaking the non-woven fabric treated in the step two in the hydrophobic antibacterial impregnation liquid obtained in the step one for 70min, taking out the non-woven fabric after soaking is finished, and drying in an oven at the temperature of 40 ℃ to constant weight to obtain the antibacterial non-woven fabric.

The preparation method of the hydrophobic antibacterial impregnation liquid comprises the following steps:

under the condition of room temperature, placing tris (hydroxyamino) methane, dopamine hydrochloride and water in a beaker, magnetically stirring for 30min, adding a hydrochloric acid solution with the concentration of 1mol/L into the beaker to adjust the pH value to 8.5, then adding a modified antibacterial agent and a wear-resistant filler into the beaker, and stirring for 3h at the rotating speed of 300r/min to obtain the hydrophobic antibacterial impregnation liquid.

Wherein the mass ratio of the tris (hydroxyamino) methane, the dopamine hydrochloride, the water, the modified antibacterial agent and the wear-resistant filler is 1.2: 2: 95: 1: 1.

wherein the modified antibacterial agent is prepared by the following steps:

step S11, under the ice bath condition, adding deionized water, ethylenediamine and a silver nitrate solution with the mass fraction of 1% into a beaker, stirring at the rotation speed of 50r/min for 10min, adding a sodium borohydride solution with the concentration of 250mmol/L into the beaker, increasing the rotation speed to 100r/min, stirring for reaction for 5min, transferring into a dialysis bag, dialyzing in distilled water for 12h, and finally drying at 60 ℃ to constant weight to obtain an intermediate 1;

step S12, adding chitosan and 1% by mass of acetic acid solution into a three-neck flask, heating in a water bath at 50 ℃, stirring for 10min at a rotation speed of 80r/min, heating to 80 ℃, then dropwise adding oleic acid into the three-neck flask, controlling the dropwise adding speed to be 1 drop/second, stirring and reacting at a rotation speed of 150r/min while dropwise adding, after dropwise adding, carrying out heat preservation and reaction for 24h under a dark condition, centrifuging the reaction product once at a rotation speed of 12000r/min, washing the precipitate once with absolute ethyl alcohol, then transferring the precipitate into a dialysis bag, alternately dialyzing for 2 times with absolute ethyl alcohol and deionized water for 12h each time, and finally carrying out freeze drying for 5h at-45 ℃ to obtain an intermediate 2;

step S13, adding the intermediate 2 and an acetic acid solution with the mass fraction of 1% into a reaction kettle, stirring at the rotation speed of 75r/min at the temperature of 50 ℃ for 10min, and adding N-acetylcysteine, 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride, N-hydroxysuccinimide and deionized water according to the dosage ratio of 0.2 g: 0.6 g: 0.3 g: adding 30mL of the mixed solution into a beaker, uniformly mixing to obtain a mixed solution a, then dropwise adding the mixed solution a into a reaction kettle, stirring and dropwise adding the mixed solution a at the rotating speed of 100r/min, keeping the temperature for 24 hours under a dark condition after dropwise adding, centrifuging a product once by using absolute ethyl alcohol after the reaction is finished, washing a precipitate for 3 hours by using deionized water, transferring the precipitate into a dialysis bag, respectively dialyzing the precipitate for 12 hours by using a hydrochloric acid solution with the concentration of 1mmol/L, a sodium chloride solution with the mass fraction of 1% and a hydrochloric acid solution with the concentration of 0.2 mmol/L, and finally freeze-drying the precipitate to constant weight at the temperature of-48 ℃ to obtain;

and step S14, adding the intermediate 1 and an ethanol solution with the mass fraction of 30% into a beaker, performing ultrasonic dispersion for 20min at the frequency of 30kHz to obtain an intermediate 1 dispersion liquid, adding the intermediate 3 and deionized water into a reaction kettle, performing ultrasonic dispersion for 20min at the frequency of 45kHz, adding the intermediate 1 dispersion liquid into the reaction kettle, stirring and reacting for 5h under the condition of the rotation speed of 200r/min, dialyzing for 12h in distilled water, and performing freeze drying for 5h at the temperature of minus 45 ℃ to obtain the modified antibacterial agent.

Wherein the dosage ratio of the deionized water, the ethylenediamine, the silver nitrate solution and the sodium borohydride solution in the step S11 is 40 mL: 500. mu.L: 500. mu.L: 300 mu L; in the step S12, the using amount ratio of the chitosan to the acetic acid solution to the oleic acid is1 g: 70mL of: 2 mL; in the step S13, the dosage ratio of the intermediate 2, the acetic acid solution and the mixed solution a is1 g: 70mL of: 30 mL; in the step S14, the dosage ratio of the intermediate 1, the ethanol solution, the intermediate 3 and the deionized water is 10 g: 30mL of: 1 g: 10 mL.

The preparation method of the wear-resistant filler comprises the following steps:

step S21, adding 2, 4-dihydroxy benzophenone and acetone into a reaction kettle, stirring for 10min at a rotation speed of 50r/min, transferring to a three-neck flask with a reflux condenser tube, adding epoxy chloropropane into the three-neck flask, heating to 80 ℃, stirring at a rotation speed of 100r/min for reaction, adding a sodium hydroxide solution with the mass fraction of 2.5% into the three-neck flask while stirring, continuing to react for 2h without changing the rotation speed after dropwise addition is finished, obtaining a mixture b, extracting the mixture b with ethyl acetate, removing an organic solvent through rotary evaporation, purifying with a silica gel chromatographic column, and performing vacuum drying on the obtained yellow powder at 50 ℃ for 12h to obtain modified UV-0;

step S22, adding silicon carbide and toluene into a three-neck flask, adding a silane coupling agent KH-550 under 100 ℃ reflux, stirring and reacting for 4 hours at the rotation speed of 100r/min, centrifuging the obtained product at the rotation speed of 10000r/min, and washing the precipitate for three times with toluene to obtain modified silicon carbide;

and S23, adding the modified silicon carbide and toluene into a three-neck flask, adding modified UV-0 into the three-neck flask at the rotation speed of 200r/min, stirring for 12h at 40 ℃, centrifuging at the rotation speed of 12000r/min, washing the precipitate for 3 times by using toluene, and finally drying for 24h in a vacuum box at 60 ℃ to obtain the wear-resistant filler.

Wherein the using ratio of the 2, 4-dihydroxy benzophenone, the acetone, the epichlorohydrin and the sodium hydroxide solution in the step S21 is 2 g: 20mL of: 5 g: 20 mL; in the step S22, the dosage ratio of the silicon carbide to the toluene to the silane coupling agent KH-550 is 4 g: 200mL of: 0.3 g; the dosage ratio of the modified silicon carbide, the toluene and the modified UV-0 in the step S23 is 4 g: 150mL of: 0.5 g.

Example 2

An antibacterial non-woven fabric manufacturing process comprises the following steps:

firstly, preparing hydrophobic antibacterial impregnation liquid;

secondly, performing suede treatment on the surface of the non-woven fabric, and rubbing the two sides of the non-woven fabric through a brush to destroy textures on the surface of the non-woven fabric to form a suede;

and step three, soaking the non-woven fabric treated in the step two in the hydrophobic antibacterial impregnation liquid obtained in the step one for 70-80min, taking out the non-woven fabric after soaking is finished, and drying in a 50 ℃ oven to constant weight to obtain the antibacterial non-woven fabric.

The preparation method of the hydrophobic antibacterial impregnation liquid comprises the following steps:

under the condition of room temperature, placing tris (hydroxyamino) methane, dopamine hydrochloride and water in a beaker, magnetically stirring for 40min, adding a hydrochloric acid solution with the concentration of 1mol/L into the beaker to adjust the pH value to 8.5, then adding a modified antibacterial agent and a wear-resistant filler into the beaker, and stirring for 3h at the rotating speed of 400r/min to obtain the hydrophobic antibacterial impregnation liquid.

Wherein the mass ratio of the tris (hydroxyamino) methane, the dopamine hydrochloride, the water, the modified antibacterial agent and the wear-resistant filler is 1.2: 2: 96: 2: 2.

wherein the modified antibacterial agent is prepared by the following steps:

step S11, under the ice bath condition, adding deionized water, ethylenediamine and a silver nitrate solution with the mass fraction of 1% into a beaker, stirring at the rotation speed of 70r/min for 10min, adding a sodium borohydride solution with the concentration of 250mmol/L into the beaker, increasing the rotation speed to 150r/min, stirring for reaction for 5min, transferring into a dialysis bag, dialyzing in distilled water for 14h, and finally drying at 70 ℃ to constant weight to obtain an intermediate 1;

step S12, adding chitosan and 1% by mass of acetic acid solution into a three-neck flask, heating in a water bath at 55 ℃, stirring for 12min at a rotation speed of 80r/min, heating to 80 ℃, then dropwise adding oleic acid into the three-neck flask, controlling the dropwise adding speed to be 2 drops/second, stirring and reacting at a rotation speed of 150r/min while dropwise adding, after dropwise adding, carrying out heat preservation and reaction for 24h under a dark condition, centrifuging the reaction product once at a rotation speed of 12000r/min, washing the precipitate once with absolute ethyl alcohol, then transferring the precipitate into a dialysis bag, alternately dialyzing for 2 times with absolute ethyl alcohol and deionized water for 12h each time, and finally carrying out freeze drying for 8h at-45 ℃ to obtain an intermediate 2;

step S13, adding the intermediate 2 and an acetic acid solution with the mass fraction of 1% into a reaction kettle, stirring at the rotation speed of 75r/min at the temperature of 52 ℃ for 15min, and adding N-acetylcysteine, 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride, N-hydroxysuccinimide and deionized water according to the dosage ratio of 0.2 g: 0.6 g: 0.3: adding 35mL of the mixed solution into a beaker, uniformly mixing to obtain a mixed solution a, then dropwise adding the mixed solution a into a reaction kettle, stirring and dropwise adding the mixed solution a at the rotating speed of 150r/min, keeping the temperature for 24 hours under a dark condition after dropwise adding, centrifuging a product once by using absolute ethyl alcohol after the reaction is finished, washing a precipitate for 4 hours by using deionized water, transferring the precipitate into a dialysis bag, respectively dialyzing the precipitate for 12 hours by using a hydrochloric acid solution with the concentration of 1mmol/L, a sodium chloride solution with the mass fraction of 1% and a hydrochloric acid solution with the concentration of 0.2 mmol/L, and finally freeze-drying the precipitate to constant weight at the temperature of-48 ℃ to obtain;

and step S14, adding the intermediate 1 and an ethanol solution with the mass fraction of 30% into a beaker, performing ultrasonic dispersion for 20min at the frequency of 40kHz to obtain an intermediate 1 dispersion liquid, adding the intermediate 3 and deionized water into a reaction kettle, performing ultrasonic dispersion for 20min at the frequency of 45kHz, adding the intermediate 1 dispersion liquid into the reaction kettle, stirring and reacting for 7h under the condition of the rotation speed of 250r/min, dialyzing for 12h in distilled water, and performing freeze drying for 8h at the temperature of minus 45 ℃ to obtain the modified antibacterial agent.

Wherein the using amount ratio of the deionized water, the ethylenediamine, the silver nitrate solution and the sodium borohydride solution in the step S11 is 45 mL: 500. mu.L: 500. mu.L: 300 mu L; in the step S12, the using amount ratio of the chitosan to the acetic acid solution to the oleic acid is1 g: 70mL of: 2 mL; in the step S13, the dosage ratio of the intermediate 2, the acetic acid solution and the mixed solution a is1 g: 75mL of: 30 mL; in the step S14, the dosage ratio of the intermediate 1, the ethanol solution, the intermediate 3 and the deionized water is 10 g: 35mL of: 2 g: 10 mL.

The preparation method of the wear-resistant filler comprises the following steps:

step S21, adding 2, 4-dihydroxy benzophenone and acetone into a reaction kettle, stirring for 10min at a rotation speed of 50r/min, transferring to a three-neck flask with a reflux condenser tube, adding epoxy chloropropane into the three-neck flask, heating to 80 ℃, stirring at a rotation speed of 150r/min for reaction, adding a sodium hydroxide solution with the mass fraction of 2.5% into the three-neck flask while stirring, continuing to react for 2h without changing the rotation speed after dropwise addition is finished, obtaining a mixture b, extracting the mixture b with ethyl acetate, removing an organic solvent through rotary evaporation, purifying with a silica gel chromatographic column, and performing vacuum drying on the obtained yellow powder at 50 ℃ for 12h to obtain modified UV-0;

step S22, adding silicon carbide and toluene into a three-neck flask, adding a silane coupling agent KH-550 under 100 ℃ reflux, stirring and reacting for 4 hours at the rotation speed of 150r/min, centrifuging the obtained product at the rotation speed of 10000r/min, and washing the precipitate with toluene for three times to obtain modified silicon carbide;

and S23, adding the modified silicon carbide and toluene into a three-neck flask, adding modified UV-0 into the three-neck flask at the rotation speed of 250r/min, stirring for 14h at 40 ℃, centrifuging at the rotation speed of 12000r/min, washing the precipitate for 3-5 times by using toluene, and finally drying for 24h in a vacuum box at 60 ℃ to obtain the wear-resistant filler.

Wherein the using ratio of the 2, 4-dihydroxy benzophenone, the acetone, the epichlorohydrin and the sodium hydroxide solution in the step S21 is 2.5 g: 20mL of: 5 g: 20 mL; in the step S22, the dosage ratio of the silicon carbide to the toluene to the silane coupling agent KH-550 is 4 g: 200mL of: 0.4 g; the dosage ratio of the modified silicon carbide, the toluene and the modified UV-0 in the step S23 is 4 g: 170mL of: 0.5 g.

Example 3

An antibacterial non-woven fabric manufacturing process comprises the following steps:

firstly, preparing hydrophobic antibacterial impregnation liquid;

secondly, performing suede treatment on the surface of the non-woven fabric, and rubbing the two sides of the non-woven fabric through a brush to destroy textures on the surface of the non-woven fabric to form a suede;

and thirdly, soaking the non-woven fabric treated in the second step in the hydrophobic antibacterial impregnation liquid obtained in the first step for 80min, taking out the non-woven fabric after soaking is finished, and drying in a 60 ℃ oven to constant weight to obtain the antibacterial non-woven fabric.

The preparation method of the hydrophobic antibacterial impregnation liquid comprises the following steps:

under the condition of room temperature, placing tris (hydroxyamino) methane, dopamine hydrochloride and water in a beaker, magnetically stirring for 50min, adding a hydrochloric acid solution with the concentration of 1mol/L into the beaker to adjust the pH value to 8.5, then adding a modified antibacterial agent and a wear-resistant filler into the beaker, and stirring for 4h at the rotation speed of 500r/min to obtain the hydrophobic antibacterial impregnation liquid.

Wherein the mass ratio of the tris (hydroxyamino) methane, the dopamine hydrochloride, the water, the modified antibacterial agent and the wear-resistant filler is 1.2: 2: 98: 3: 3.

wherein the modified antibacterial agent is prepared by the following steps:

step S11, under the ice bath condition, adding deionized water, ethylenediamine and a silver nitrate solution with the mass fraction of 1% into a beaker, stirring at the rotating speed of 80r/min for 10min, adding a sodium borohydride solution with the concentration of 250mmol/L into the beaker, increasing the rotating speed to 200r/min, stirring for reaction for 5min, transferring into a dialysis bag, dialyzing in distilled water for 15h, and finally drying at the temperature of 80 ℃ to constant weight to obtain an intermediate 1;

step S12, adding chitosan and 1% by mass of acetic acid solution into a three-neck flask, heating in a water bath at 60 ℃, stirring for 15min at a rotation speed of 80r/min, heating to 80 ℃, then dropwise adding oleic acid into the three-neck flask, controlling the dropwise adding speed to be 3 drops/second, stirring and reacting at a rotation speed of 150r/min while dropwise adding, after dropwise adding, carrying out heat preservation and reaction for 24h under a dark condition, centrifuging the reaction product once at a rotation speed of 12000r/min, washing the precipitate once with absolute ethyl alcohol, then transferring the precipitate into a dialysis bag, alternately dialyzing for 2 times with absolute ethyl alcohol and deionized water for 12h each time, and finally carrying out freeze drying for 10h at-45 ℃ to obtain an intermediate 2;

step S13, adding the intermediate 2 and an acetic acid solution with the mass fraction of 1% into a reaction kettle, stirring at the rotation speed of 75r/min at the temperature of 55 ℃ for 20min, and adding N-acetylcysteine, 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride, N-hydroxysuccinimide and deionized water according to the dosage ratio of 0.2 g: 0.6 g: 0.3 g: adding 40mL of the mixed solution into a beaker, uniformly mixing to obtain a mixed solution a, then dropwise adding the mixed solution a into a reaction kettle, stirring at a rotating speed of 200r/min while dropwise adding, keeping the temperature under a dark condition for reaction for 24 hours, after the reaction is finished, centrifuging the product once by using absolute ethyl alcohol, washing the precipitate for 5 hours by using deionized water, transferring the precipitate into a dialysis bag, dialyzing the precipitate for 12 hours by using a hydrochloric acid solution with the concentration of 1mmol/L, a sodium chloride solution with the mass fraction of 1% and a hydrochloric acid solution with the concentration of 0.2 mmol/L respectively, and finally freeze-drying at the temperature of minus 48 ℃ to constant weight to obtain an intermediate 3;

and step S14, adding the intermediate 1 and an ethanol solution with the mass fraction of 30% into a beaker, performing ultrasonic dispersion for 20min at the frequency of 50kHz to obtain an intermediate 1 dispersion liquid, adding the intermediate 3 and deionized water into a reaction kettle, performing ultrasonic dispersion for 20min at the frequency of 45kHz, adding the intermediate 1 dispersion liquid into the reaction kettle, stirring and reacting for 8h under the condition of the rotating speed of 300r/min, dialyzing for 12h in distilled water, and performing freeze drying for 10h at the temperature of minus 45 ℃ to obtain the modified antibacterial agent.

Wherein the usage ratio of the deionized water, the ethylenediamine, the silver nitrate solution and the sodium borohydride solution in the step S11 is 50 mL: 500. mu.L: 500. mu.L: 300 mu L; in the step S12, the using amount ratio of the chitosan to the acetic acid solution to the oleic acid is1 g: 70mL of: 3 mL; in the step S13, the dosage ratio of the intermediate 2, the acetic acid solution and the mixed solution a is1 g: 80mL of: 30 mL; in the step S14, the dosage ratio of the intermediate 1, the ethanol solution, the intermediate 3 and the deionized water is 10 g: 40mL of: 3 g: 10 mL.

The preparation method of the wear-resistant filler comprises the following steps:

step S21, adding 2, 4-dihydroxy benzophenone and acetone into a reaction kettle, stirring for 10min at a rotation speed of 50r/min, transferring to a three-neck flask with a reflux condenser tube, adding epoxy chloropropane into the three-neck flask, heating to 80 ℃, stirring at a rotation speed of 200r/min for reaction, adding a sodium hydroxide solution with the mass fraction of 2.5% into the three-neck flask while stirring, continuing to react for 2h without changing the rotation speed after dropwise addition is finished, obtaining a mixture b, extracting the mixture b with ethyl acetate, removing an organic solvent through rotary evaporation, purifying with a silica gel chromatographic column, and performing vacuum drying on the obtained yellow powder at 50 ℃ for 12h to obtain modified UV-0;

step S22, adding silicon carbide and toluene into a three-neck flask, adding a silane coupling agent KH-550 under 100 ℃ reflux, stirring and reacting for 4 hours at a rotation speed of 200r/min, centrifuging the obtained product at a rotation speed of 10000r/min, and washing the precipitate for three times with toluene to obtain modified silicon carbide;

and S23, adding the modified silicon carbide and toluene into a three-neck flask, adding modified UV-0 into the three-neck flask at the rotation speed of 300r/min, stirring for 15h at 40 ℃, centrifuging at the rotation speed of 12000r/min, washing the precipitate for 5 times by using toluene, and finally drying for 24h in a vacuum box at 60 ℃ to obtain the wear-resistant filler.

Wherein the using ratio of the 2, 4-dihydroxy benzophenone, the acetone, the epichlorohydrin and the sodium hydroxide solution in the step S21 is 3 g: 20mL of: 5 g: 20 mL; in the step S22, the dosage ratio of the silicon carbide to the toluene to the silane coupling agent KH-550 is 4 g: 200mL of: 0.5 g; the dosage ratio of the modified silicon carbide, the toluene and the modified UV-0 in the step S23 is 4 g: 180 mL: 0.5 g.

Comparative example 1

The modified antibacterial agent in example 1 was removed, and the remaining raw materials and preparation process were unchanged.

Comparative example 2

The abrasion resistant filler in example 2 was removed and the remaining raw materials and preparation process were unchanged.

Comparative example 3

The comparative example is an antibacterial non-woven fabric commonly seen in the market.

The antibacterial non-woven fabrics in examples 1 to 3 and comparative examples 1 to 3 were subjected to performance tests, and the antibacterial performance: after the non-woven fabrics of the embodiments 1 to 3 and the comparative examples 1 to 3 are washed for 30 times, staphylococcus aureus is inoculated, and the test method is a quantitative test according to the JIS19021 standard, wherein the bactericidal activity value of more than zero represents bacteriostasis, and the wear rate: performing friction and wear test by adopting an MRH-3 type ring-block friction and wear testing machine, wherein the material of a dual steel ring is GCr15 steel, the surface roughness of the steel ring is 0.1-0.2 mu m, the load (50-300N), the speed (0.5-3m/s), the ambient temperature (25-140 ℃) is adopted under the friction and wear test condition, dry friction is performed, the volume loss of the composite material is tested by adopting a weight loss method, and the material wear rate (K) is calculated by utilizing a formula K ═ delta V/(NxL), wherein delta V is the sample volume loss, N is the test load, and L is the sliding distance; water washing resistance: GB/T20944.3-2008, evaluation of antibacterial performance of textiles part 3: in the oscillation method, "10.1.1 washing method of color fastness to washing tester", the prepared antibacterial fabric sample is washed 30 times, and the color and form change, ultraviolet transmittance: the fabric was tested for UV transmittance according to GB/T17032-1997.

The test results are shown in the following table:

sample (I)	Bactericidal activity value	Wear rate/mm3.N-1.m-1	Washing-resistant fabric	Transmittance of ultraviolet ray
					Example 1	1.72	4.8×10-6	Without change	0.1
Example 2	1.71	4.5×10-6	Without change	0.1
					Example 3	1.72	4.7×10-6	Without change	0.1
Comparative example 1	1.25	10.5×10-6	Without change	0.6
					Comparative example 2	1.70	580×10-6	Without change	0.6
Comparative example 3	1.20	790×10-6	Deformation fading	1.5

As can be seen from the table above, the performances of the examples 1-3 in the processes of antibacterial, wear-resistant, water-washing resistant and ultraviolet-proof transmittance tests are superior to those of the comparative examples 1-3, which shows that the non-woven fabric prepared by the invention not only has excellent antibacterial performance, but also has the functions of friction resistance, water-washing resistant and ultraviolet-proof, and has greater application value in the field of fabrics.

The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.