Glass fiber ball bundle loaded antibacterial-adsorption bifunctional composite material and preparation method thereof

Abstract

The invention relates to the technical field of adsorption materials based on glass fiber ball bundles, and discloses a glass fiber ball bundle loaded antibacterial-adsorption difunctional composite material and a preparation method thereof.The preparation method comprises the steps that waste PCB nonmetal powder is taken to prepare glass fiber ball bundles; a mixed gas of argon and oxygen is adopted as a plasma treatment gas, surface activation treatment is performed on a glass fiber ball bundle, then grafting modification and curing treatment are performed by adopting a silane coupling agent solution, the cured glass fiber ball bundle is placed in a silver nitrate solution for standing, then a sodium borohydride solution is dropwise added, and the glass fiber ball bundle is obtained. A glass fiber ball bundle loaded with nano-silver is obtained; chitosan is subjected to carboxymethylation modification, and the modified chitosan is prepared into an acetic acid solution; and placing the nano-silver-loaded glass fiber ball bundles in the acetic acid solution for reaction to obtain the antibacterial-adsorption difunctional composite material. The composite material disclosed by the invention has excellent adsorption performance on pollutants.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of adsorption materials based on glass fiber bundle, in particular to a glass fiber bundle loaded antibacterial-adsorption dual functional composite material and a preparation method thereof. BACKGROUND

[0002] Heavy metal ions such as lead and cadmium and organic pollutants such as dyes contained in industrial wastewater have the characteristics of strong toxicity, difficult degradation and easy enrichment, which can seriously pollute the water ecological environment and endanger human health. Adsorption method has become one of the widely used technologies in industrial wastewater treatment because of its simple operation and low cost. However, the traditional adsorption material only has single adsorption function, and its porous structure is easy to become a breeding carrier for harmful microorganisms during wastewater treatment, which leads to the attenuation of the adsorption performance of the material and causes secondary pollution of water body, thereby limiting its long-term application effect.

[0003] With the increasing production of electronic waste, the recycling of waste PCB (printed circuit board) has become an important issue in the environmental protection field. After metal recovery, the remaining non-metallic powder accounts for 40%-60%, and its main components include glass fiber and resin. If it is directly stacked or landfilled, not only the land resources will be occupied, but also the soil and water pollution will be caused by the leakage of harmful substances. At present, the resource utilization rate of waste PCB non-metallic powder is low, and how to realize its efficient recycling and reuse has become an urgent environmental problem to be solved.

[0004] Therefore, it has important practical significance to provide a glass fiber bundle loaded antibacterial-adsorption dual functional composite material and a preparation method thereof, which can solve the problems of single function and easy breeding of bacteria of the traditional adsorption material, cause secondary pollution, realize the resource utilization of waste PCB non-metallic powder, reduce the preparation cost of the composite material, and provide an efficient and environmentally friendly new material for industrial wastewater treatment. SUMMARY

[0005] In view of this, the present application provides a glass fiber bundle loaded antibacterial-adsorption dual functional composite material and a preparation method thereof, which aims to solve at least one of the problems in the current background technology.

[0006] The present application provides a preparation method of a glass fiber bundle loaded antibacterial-adsorption dual functional composite material, which comprises the following steps: Obtaining glass fiber bundle from waste PCB non-metallic powder; Using a mixed gas of argon and oxygen as a plasma treatment gas to perform surface activation treatment on the glass fiber bundle to obtain activated glass fiber bundle; Placing the activated glass fiber bundle in a silane coupling agent solution for graft modification, and then performing solidification treatment to obtain solidified glass fiber bundle; The solidified glass fiber cluster is placed in a silver nitrate solution and then a sodium borohydride solution is added dropwise to obtain a glass fiber cluster loaded with nano-silver; The chitosan is carboxymethylated to obtain modified chitosan, and the modified chitosan is prepared into an acetic acid solution. The glass fiber cluster loaded with nano-silver is placed in the acetic acid solution to obtain the antibacterial-adsorption dual-functional composite material.

[0007] Preferably, the glass fiber cluster prepared from the waste PCB non-metal powder is obtained by the following steps: taking waste PCB non-metal powder, crushing, air flow sorting, hydrochloric acid solution treatment, washing and drying, high temperature sintering and mechanical rolling.

[0008] Preferably, the volume ratio of argon to oxygen is 3:1, the power of the surface activation treatment is 80-120W, the time is 15-30min, and the pressure is 10-20Pa.

[0009] Preferably, the concentration of the silver nitrate solution is 0.05-0.1mol / L, the solid-liquid ratio of the glass fiber cluster to the silver nitrate solution is 1g:50mL, the temperature of the standing is 25-35℃, and the time is 1-2h.

[0010] Preferably, the concentration of the sodium borohydride solution is 0.1-0.2mol / L, the dropping rate is 1-2mL / min, and the sodium borohydride solution is placed for 2-3h after the dropping is completed.

[0011] Preferably, the carboxymethylation modification of the chitosan is performed by using a chloroacetic acid solution with a mass fraction of 10%-15% at a temperature of 50-60℃ for 3-5h; and the mass concentration of the modified chitosan in the acetic acid solution is 50-60%.

[0012] Preferably, the silane coupling agent solution is obtained by dissolving amino silane in an ethanol-water mixed solvent, the amino silane is KH550, the volume ratio of ethanol to water in the ethanol-water mixed solvent is 9:1, the grafting modification time is 45min, and the curing treatment time is 1.5h at a temperature of 110℃.

[0013] Preferably, in the reaction of the glass fiber cluster loaded with nano-silver in the acetic acid solution, the solid-liquid ratio of the glass fiber cluster loaded with nano-silver to the acetic acid solution is 1g:40mL, the reaction temperature is 30-40℃, and the reaction time is 2-4h.

[0014] The application further provides a glass fiber bundle loaded antibacterial-adsorption dual functional composite material, which is prepared by the preparation method in the above technical solution.

[0015] The application further provides an application of the glass fiber bundle loaded antibacterial-adsorption dual functional composite material in the above technical solution, and the application is specifically an application in pollutant adsorption.

[0016] Compared with the prior art, the application has the beneficial effects that: The composite material combines the structural support of the glass fiber bundle, the antibacterial property of the nano-silver and the adsorption property of the modified chitosan, so that the pollutant adsorption and microbial inhibition can be completed at one time. The bacteriostatic effect of the nano-silver avoids the breeding of microorganisms on the surface of the adsorption material, and thus the secondary pollution problem caused by the traditional adsorption material is solved from the root. In addition, the base carrier is prepared by using the waste PCB nonmetallic powder as a raw material, so that the material cost is reduced, the solid waste is recycled, and the environmental protection concept is met. DETAILED DESCRIPTION

[0017] A number of exemplary embodiments of the present application are described herein; however, it is to be understood that the present application is not limited to these embodiments, but is applicable to any device, apparatus, or method that can carry out the functions and / or options described herein. Furthermore, where appropriate, aspects of the present application can be comprised of multiple different components, which can be replaced by more than one component, and the components can be arranged in several different configurations. Therefore, once equivalents have been determined, this section should be treated as an enabling disclosure as opposed to a limiting disclosure.

[0018] In addition, for numerical ranges that are expressed in a range format, it is intended to include each and every number and subset between the upper and lower bounds. For ranges containing one or more endpoints, examples of specific ranges include 1-3, 2-4, and 3-10, 5-6, and 10-10. In addition, it is intended that when numerical ranges are endpoints, for example, the endpoints can be considered to be "open" ranges which do not include the endpoint (e.g. 1-3 does not include 1 or 3). However, it is to be understood that the endpoints of claimed ranges are included in the ranges.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Although methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present application, preferred methods and materials are described. All publications mentioned in this specification are herein incorporated by reference to disclose and describe the methods and / or materials in connection with which the publications are cited. The citation of any reference in this specification is not intended as an admission that the reference is prior art, but rather that the reference is part of the technical literature that is relevant to the content of this specification.

[0020] Many modifications and variations of this application can be made without departing from its spirit and scope, which is defined by the appended claims. Other implementations of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. The specification and examples given are exemplary only.

[0021] The terms “include,” “including,” “have,” “contain,” etc., used in this article are all open-ended terms, meaning that they include but are not limited to.

[0022] This invention provides a method for preparing a glass fiber bundle-supported antibacterial-adsorption bifunctional composite material, comprising the following steps: Glass fiber bundles were prepared from waste PCB non-metallic powder. A mixture of argon and oxygen was used as the plasma treatment gas to perform surface activation treatment on the glass fiber bundles, resulting in activated glass fiber bundles. The activated glass fiber bundles were grafted and modified in a silane coupling agent solution, and then cured to obtain cured glass fiber bundles. The cured glass fiber bundles were placed in silver nitrate solution and allowed to stand. Then, sodium borohydride solution was added dropwise to obtain glass fiber bundles loaded with silver nanoparticles. Chitosan was modified by carboxymethylation to obtain modified chitosan, and the modified chitosan was prepared into an acetic acid solution. The glass fiber bundle loaded with silver nanoparticles was placed in the acetic acid solution to react and obtain the antibacterial-adsorption bifunctional composite material.

[0023] Glass fiber bundles were prepared from waste PCB non-metallic powder. In this invention, the preferred method for preparing glass fiber bundles from waste PCB non-metallic powder is as follows: waste PCB non-metallic powder is crushed, air-separated, treated with hydrochloric acid solution, washed and dried, sintered at high temperature and mechanically rolled to obtain glass fiber bundles.

[0024] In a further preferred embodiment, the above steps are as follows: Waste PCB non-metallic powder is taken and crushed to a particle size ≤5mm using a jaw crusher. Then, impurities such as resin powder are removed by airflow separation to obtain coarse glass fiber. The coarse glass fiber is placed in a 5%-10% hydrochloric acid solution and stirred at 60-80℃ for 2-4 hours to remove surface-adhered metal oxides and impurities. After filtration, it is washed with deionized water until the filtrate is neutral, and then placed in a vacuum drying oven and dried at 80-100℃ for 6-8 hours. The dried glass fiber is placed in a high-temperature sintering furnace and held at 600-700℃ for 2-3 hours. After cooling, it is mechanically rounded to obtain glass fiber bundles with a porosity ≥75%.

[0025] A mixture of argon and oxygen was used as the plasma treatment gas to perform surface activation treatment on the glass fiber bundles, resulting in activated glass fiber bundles. Further preferably, the step is specifically: the surface of the glass fiber bundle is activated by plasma treatment, the treatment gas is a gas obtained by mixing argon and oxygen at a volume ratio of 3:1, the treatment power is set to 80-120W, the treatment time is 15-30min, and the treatment pressure is controlled at 10-20Pa. The glass fiber bundle is taken out after the treatment, immediately placed in a sealed container for standby, and the surface hydroxyl content of the bundle is increased by 30%-50% through the treatment, thereby enhancing the subsequent loading capacity.

[0026] In the application, the volume ratio of the argon and oxygen is preferably 3:1, the power of the surface activation treatment is preferably 80-120W, the time is preferably 15-30min, and the pressure is preferably 10-20Pa.

[0027] The activated glass fiber bundle is placed in a silane coupling agent solution for graft modification, and then subjected to a curing treatment to obtain a cured glass fiber bundle. The amino silane KH550 is dissolved in an ethanol-water mixed solvent to prepare a solution with a concentration of 1.0%, and the pH is adjusted to 4.5 with glacial acetic acid, and stirring is performed at room temperature for 30min to promote hydrolysis, wherein the volume ratio of ethanol to water in the ethanol-water mixed solvent is 9:1; the activated glass fiber bundle is immersed in the above solution, and the bundle is soaked at room temperature for 45min, and stirred once every 10min during the soaking; then the bundle is taken out, the excess solution on the surface is removed, and the bundle is placed in a blast drying oven for curing at 110℃ for 1.5h to form a dense silane coating layer, and the bundle is cooled to room temperature for standby.

[0028] The cured glass fiber bundle is placed in a silver nitrate solution and allowed to stand, and then a sodium borohydride solution is added dropwise to obtain a glass fiber bundle loaded with nano-silver; Further preferably, the step is specifically: a silver nitrate solution with a concentration of 0.05-0.1mol / L is prepared, and the glass fiber bundle is added to the solution at a solid-liquid ratio of 1g:50mL, and stirring is performed at 25-35℃ for 1-2h for adsorption.

[0029] A sodium borohydride solution with a concentration of 0.1-0.2mol / L is slowly added dropwise to the mixed system as a reducing agent, the dropwise addition rate is 1-2mL / min, and after the dropwise addition is completed, stirring is continued for 2-3h to reduce the silver nitrate in situ to nano-silver particles. After the reaction is completed, the product is collected by filtration, washed with deionized water for 3-5 times, and vacuum dried at 60-80℃ for 4-6h to obtain a glass fiber bundle loaded with nano-silver.

[0030] The loaded nano-silver particles have broad-spectrum antibacterial properties, and the inhibition rate of common harmful microorganisms such as Escherichia coli and Staphylococcus aureus in water is ≥99%. The nano-silver particles are firmly fixed by the in-situ reduction method and are not easy to fall off, and the antibacterial effect is durable, and the antibacterial ability of the material can be maintained during long-term use.

[0031] In the application, the concentration of the silver nitrate solution is preferably 0.05-0.1 mol / L, the solid-liquid ratio of the glass fiber bundle and the silver nitrate solution is preferably 1g:50mL, the temperature of the standing is preferably 25-35℃, and the time is preferably 1-2h.

[0032] In the application, the concentration of the sodium borohydride solution is preferably 0.1-0.2 mol / L, the dropping rate is preferably 1-2mL / min, and the standing time after the sodium borohydride solution is dropped is 2-3h.

[0033] The chitosan is carboxymethylated to obtain modified chitosan, and the modified chitosan is prepared into an acetic acid solution. In the application, the carboxymethylation of the chitosan is preferably performed by using a chloroacetic acid solution with a mass fraction of 10%-15% at a temperature of 50-60℃ for 3-5h, and the concentration of the acetic acid solution is 50-60%.

[0034] Further preferably, the above steps are specifically as follows: chitosan is taken and added into deionized water, a chloroacetic acid solution with a mass fraction of 10%-15% is added after stirring and dispersing, and carboxymethylation is performed at 50-60℃ for 3-5h. After the reaction is completed, the pH is adjusted to 7-8 by using a sodium hydroxide solution, and the modified chitosan is obtained after filtration, washing and drying. The modified chitosan is dissolved in an acetic acid solution to prepare an acetic acid solution with a mass fraction of 50-60% of the modified chitosan.

[0035] The carboxymethyl groups of the modified chitosan can form stable chelates with heavy metal ions such as lead and cadmium, and the adsorption capacity of lead ions and the adsorption capacity of cadmium ions can be significantly improved. The molecular structure of the modified chitosan can adsorb organic pollutants such as dyes in water through hydrophobic interaction and hydrogen bonding, and the removal rate of dyes such as methylene blue can also be significantly improved.

[0036] The glass fiber bundle loaded with nano-silver is placed in the acetic acid solution to react to obtain the antibacterial-adsorbing dual-functional composite material.

[0037] In the application, in the reaction of the glass fiber bundle loaded with nano-silver in the acetic acid solution, the solid-liquid ratio of the glass fiber bundle loaded with nano-silver and the acetic acid solution is 1g:40mL, the reaction temperature is 30-40℃, and the time is 2-4 hours.

[0038] Further preferably, the above step specifically comprises: adding the glass fiber bundle loaded with nano-silver into the solution, with a solid-liquid ratio of 1 g:40 mL, and stirring the reaction at 30-40 DEG C for 2-4 h, so that the modified chitosan is combined on the surface and in the pores of the bundle through hydrogen bonds and covalent bonds. After filtration, the product is washed with deionized water until neutral, and vacuum dried at 70-90 DEG C for 5-7 h to obtain the antibacterial-adsorption dual-functional composite material.

[0039] The application further provides a glass fiber bundle loaded antibacterial-adsorption dual-functional composite material, which is obtained by the preparation method described in the above technical solution.

[0040] The application further provides an application of the glass fiber bundle loaded antibacterial-adsorption dual-functional composite material described in the above technical solution, and the application specifically comprises an application in pollutant adsorption.

[0041] Example 1 (1) 100 g of waste PCB non-metallic powder is crushed to a particle size of less than 5 mm, and then airflow separation is performed, to obtain 45 g of a glass fiber crude product. The glass fiber crude product is placed in a 5% hydrochloric acid solution, and stirred at a temperature of 70 DEG C for 3 h. After washing and drying, the glass fiber crude product is sintered at a temperature of 650 DEG C for 2.5 h, and then rolled to obtain a glass fiber bundle; (2) The glass fiber bundle is activated by using a mixed gas of argon and oxygen (volume ratio 3:1) as a plasma gas, at a power of 100 W and a pressure of 20 Pa, for 20 min; (3) After the activation treatment, amino silane (KH550) is dissolved in an ethanol-water mixed solvent to prepare a 1.0% solution, and the pH is adjusted to 4.5 by using glacial acetic acid, and then stirred at room temperature for 30 min to promote hydrolysis. The volume ratio of ethanol to water in the ethanol-water mixed solvent is 9:1. The activated glass fiber bundle is immersed in the above solution at room temperature for 45 min, and stirred every 10 min during the immersion. Then, the glass fiber bundle is taken out, the excess solution on the surface is removed, and the glass fiber bundle is placed in a blast drying oven and cured at 110 DEG C for 1.5 h; (4) Then, the glass fiber bundle after curing is loaded with nano-silver, specifically as follows: 5 g of the activated glass fiber bundle is added into 250 mL of a 0.08 mol / L silver nitrate solution, and adsorbed at a temperature of 30 DEG C for 1.5 h. Then, 0.15 mol / L sodium borohydride solution is added dropwise, and after the dropwise addition is completed, the reaction is carried out for 2.5 h. Then, the product is washed and dried to obtain the glass fiber bundle loaded with nano-silver; (5) Take 10 g of chitosan and add it to deionized water, stir and disperse, then add a 10% by mass chloroacetic acid solution, and react at 50-60°C for 3 h to perform carboxymethylation modification. After modification, dissolve in an acetic acid solution, and prepare a 50% by mass acetic acid solution of modified chitosan. Add the nanosilver-loaded bead to 200 mL of the solution, stir at a temperature of 35°C for 3 h, then filter, wash with deionized water until neutral, and vacuum dry at 70-90°C for 5-7 h to obtain an antibacterial-adsorption dual-functional composite material.

[0042] Example 2 (1) Take 100 g of waste PCB non-metallic powder, crush to a particle size of ≤5 mm, and then air sort to obtain 45 g of a glass fiber crude product. Place the crude product in a 8% hydrochloric acid solution, stir at a temperature of 75°C for 2.5 h, wash and dry, then sinter at a temperature of 680°C for 2 h, and roll to obtain glass fiber beads.

[0043] (2) Use argon-oxygen mixed gas (volume ratio 3:1) to activate for 15 min at a power of 120 W and a pressure of 20 Pa; (3) After activation, dissolve amino silane, i.e., KH550, in an ethanol-water mixed solvent to prepare a 1.0% concentration solution, adjust the pH to 4.5 with glacial acetic acid, and stir at room temperature for 30 min to promote hydrolysis. The volume ratio of ethanol to water in the ethanol-water mixed solvent is 9:1. Soak the activated glass fiber beads in the above solution at room temperature for 45 min, stirring every 10 min during the soaking; then take out the beads, remove the excess solution, and place them in a blast drying oven for 1.5 h at 110°C; (4) Then load nanosilver, specifically: add 5 g of the activated beads to 250 mL of a 0.1 mol / L silver nitrate solution, adsorb at a temperature of 35°C for 1.5 h, add 0.2 mol / L sodium borohydride solution dropwise, and after the dropwise addition is complete, react for 2.5 h, then wash and dry to obtain nanosilver-loaded beads; (5) Take 10 g of chitosan and add it to deionized water, stir and disperse, then add a 15% by mass chloroacetic acid solution, and react at 50-60°C for 3 h to perform carboxymethylation modification. After modification, dissolve in an acetic acid solution, and prepare a 60% by mass acetic acid solution of modified chitosan. Add the nanosilver-loaded bead to 200 mL of the solution, stir at a temperature of 40°C for 2.5 h, then filter, wash with deionized water until neutral, and vacuum dry at 70-90°C for 5-7 h to obtain an antibacterial-adsorption dual-functional composite material.

[0044] Performance test (1) Heavy metal ion adsorption test data The simulated wastewater used for testing is Pb with a concentration of 100 mg / L 2+ , Cd 2+ solution (pH = 6.0), the composite material is added in an amount of 0.5 g / 50 mL, and the adsorption is carried out under the condition of 25 DEG C and 150 r / min for 4 h, and the test results of three parallel samples are as follows: Pb 2+ Adsorption: the initial concentration of the three parallel samples is 100.0 mg / L, the equilibrium concentration is 8.2 mg / L, 8.5 mg / L and 8.3 mg / L respectively, and the average equilibrium concentration is 8.3 mg / L. The adsorption capacity of the three parallel samples is 50.9 mg / g, 50.6 mg / g and 50.8 mg / g respectively, and the average adsorption capacity is 50.8 mg / g; the removal rate is 91.8%, 91.5% and 91.7% respectively, and the average removal rate is 91.7%, and the relative standard deviation is 0.32%.

[0045] Cd 2+ Adsorption: the initial concentration of the three parallel samples is 100.0 mg / L, the equilibrium concentration is 16.8 mg / L, 17.2 mg / L and 17.0 mg / L respectively, and the average equilibrium concentration is 17.0 mg / L. The adsorption capacity of the three parallel samples is 31.6 mg / g, 31.2 mg / g and 31.4 mg / g respectively, and the average adsorption capacity is 31.4 mg / g; the removal rate is 83.2%, 82.8% and 83.0% respectively, and the average removal rate is 83.0%, and the relative standard deviation is 0.63%.

[0046] (2) Organic dye adsorption test data The methylene blue aqueous solution used for testing has a concentration of 100 mg / L, the composite material is added in an amount of 0.2 g / 50 mL, and the adsorption is carried out under the condition of 25 DEG C and 150 r / min for 2 h, and the test results of three parallel samples are as follows: The initial concentration of the three parallel samples is 100.0 mg / L, and the equilibrium concentration is 8.5 mg / L, 8.8 mg / L and 8.6 mg / L respectively measured by a UV-visible spectrophotometer (664 nm wavelength), and the average equilibrium concentration is 8.6 mg / L. The adsorption capacity of the three parallel samples is 22.9 mg / g, 22.8 mg / g and 22.9 mg / g respectively, and the average adsorption capacity is 22.9 mg / g; the removal rate is 91.5%, 91.2% and 91.4% respectively, and the average removal rate is 91.4%, and the relative standard deviation is 0.16%.

[0047] Based on the above, the glass fiber ball load antibacterial-adsorption dual functional composite material obtained by the application has excellent adsorption performance on pollutants.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for preparing a glass fiber bundle loaded antibacterial-adsorptive bifunctional composite material, characterized in that, The method comprises the following steps: The glass fiber bundle is prepared from waste PCB non-metallic powder; The glass fiber bundle is subjected to surface activation treatment by using a mixed gas of argon and oxygen as a plasma treatment gas, to obtain an activated glass fiber bundle; The activated glass fiber bundle is subjected to graft modification by being placed in a silane coupling agent solution, and then subjected to solidification treatment, to obtain a solidified glass fiber bundle; The solidified glass fiber bundle is placed in a silver nitrate solution and then a sodium borohydride solution is added dropwise, to obtain a glass fiber bundle loaded with nano-silver; The carboxymethylated chitosan is prepared into an acetic acid solution; The glass fiber bundle loaded with nano-silver is reacted in the acetic acid solution, to obtain the antibacterial-adsorbing dual-functional composite material.

2. The method for preparing the glass fiber bundle-supported antibacterial-adsorption dual-functional composite material according to claim 1, characterized in that, The glass fiber bundle is prepared from waste PCB non-metallic powder by the following steps: powdering, air flow sorting, hydrochloric acid solution treatment, washing and drying, high-temperature sintering and mechanical rolling.

3. The method for preparing the glass fiber bundle-supported antibacterial-adsorption dual-functional composite material according to claim 1, characterized in that, The volume ratio of argon to oxygen is 3:1, the power of the surface activation treatment is 80-120 W, the time is 15-30 min, and the pressure is 10-20 Pa.

4. The method for preparing the glass fiber bundle-supported antibacterial-adsorption dual-functional composite material according to claim 1, characterized in that, The concentration of the silver nitrate solution is 0.05-0.1 mol / L, the solid-liquid ratio of the glass fiber bundle to the silver nitrate solution is 1 g:50 mL, the temperature of the standing is 25-35℃, and the time is 1-2 h.

5. The method for preparing the glass fiber bundle-supported antibacterial-adsorption dual-functional composite material according to claim 1, characterized in that, The concentration of the sodium borohydride solution is 0.1-0.2 mol / L, the dropping rate is 1-2 mL / min, and the sodium borohydride solution is allowed to stand for 2-3 h after the dropping is completed.

6. The method for preparing the glass fiber bundle-supported antibacterial-adsorption dual-functional composite material according to claim 1, characterized in that, The carboxymethylated chitosan is prepared by using a chloroacetic acid solution with a mass fraction of 10%-15% at a temperature of 50-60℃ for 3-5 h; and the mass concentration of the carboxymethylated chitosan in the acetic acid solution is 50-60%.

7. The method for preparing the glass fiber bundle-supported antibacterial-adsorption dual-functional composite material according to claim 1, characterized in that, The silane coupling agent solution is prepared by dissolving amino silane in an ethanol-water mixed solvent, wherein the amino silane is KH550, and the volume ratio of ethanol to water in the ethanol-water mixed solvent is 9:1; the graft modification is performed for 45 min; and the solidification treatment is performed for 1.5 h at a temperature of 110℃.

8. The method for preparing the glass fiber bundle-supported antibacterial-adsorption dual-functional composite material according to claim 1, characterized in that, In the reaction of the glass fiber bundle loaded with nano-silver in the acetic acid solution, the solid-liquid ratio of the glass fiber bundle loaded with nano-silver to the acetic acid solution is 1 g:40 mL, the reaction temperature is 30-40℃, and the reaction time is 2-4 h.

9. A glass fiber bundle loaded antibacterial-adsorptive bifunctional composite material, characterized by, The composite material is obtained by the preparation method of any one of claims 1-8.

10. Use of the glass fiber bundle load antimicrobial-adsorptive bifunctional composite material according to claim 9, characterized in that, The application is particularly for the adsorption of pollutants.