Wear-resistant modified glass fiber and preparation method thereof

Abstract

The invention relates to a wear-resistant modified glass fiber and a preparation method thereof, and belongs to the technical field of high polymer materials. The wear-resistant modified glass fiber is prepared from the following components in parts by weight: 40 to 60 parts of SiO2, 10 to 15 parts of Al2O3, 20 to 30 parts of CaO, 1 to 3 parts of Fe2O3, 1 to 3 parts of CeO2, 2 to 10 parts of modified toughening agent and 2 to 10 parts of wear-resistant filler, the flexibility and elasticity of polydopamine in the modified toughening agent can reduce the generation and expansion of cracks, and polydopamine cooperates with modified silicon nitride to increase the toughness and the adhesiveness and bonding performance of polyethyleneimine, so that the material is not easy to damage when bearing an external force; graphite oxide in the wear-resistant filler endows strength and heat resistance, molybdenum disulfide provides lubricity, a pre-product contributes to improvement of interface performance, and polytetrafluoroethylene and molybdenum disulfide synergistically improve wear resistance and lubricity; the wear-resistant modified glass fiber prepared by the invention not only has a good toughening effect, but also has an excellent wear-resistant effect.

Description

Technical Field

[0001] The invention belongs to the technical field of polymer materials, and particularly relates to a wear-resistant modified glass fiber and a preparation method thereof. Background Art

[0002] Glass fiber is an inorganic, non-metallic material with excellent properties. Available in a wide variety of varieties, its individual filaments range in diameter from a few microns to over 20 microns, with each strand consisting of hundreds or even thousands of individual filaments. It possesses excellent chemical resistance, insulation, heat resistance, and high mechanical strength, making it a widely used reinforcement in composite materials, electrical insulation, thermal insulation, as well as in construction and building materials, electronics, and transportation.

[0003] However, glass fiber lacks toughness in practical applications and is prone to cracking or breaking when subjected to force or friction, which greatly limits its promotion and use. At the same time, since glass fiber itself has poor wear resistance, many application scenarios have high requirements for the wear resistance of glass fiber, which also limits its promotion and application to a certain extent. Therefore, the research and development of wear-resistant modified glass fiber with excellent performance has important practical significance and application value. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a wear-resistant modified glass fiber and a preparation method thereof.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A wear-resistant modified glass fiber and a preparation method thereof, comprising the following raw materials in parts by weight: 40-60 parts of SiO2, 10-15 parts of Al2O3, 20-30 parts of CaO, 1-3 parts of Fe2O3, 1-3 parts of CeO2, 2-10 parts of a modified toughening agent, and 2-10 parts of a wear-resistant filler.

[0006] The modified toughening agent is prepared by the following method: Step A1: Place the nano-Si3N4 in a vacuum drying oven at 120°C for activation treatment for 2.5h, and then add 3-(2,3-epoxypropane)2-[2-(2-(2-piperidinium)-1-yl)-1-[2-(2-piperidinium)-1-yl)-1-[2-piperidinium)-1-yl] ...

[0007] Example 1: A method for preparing wear-resistant modified glass fiber, comprising the following steps: S1. Weigh the raw materials by weight: 40 parts of SiO2, 10 parts of Al2O3, 20 parts of CaO, 1 part of Fe2O3, 1 part of CeO2, 2 parts of a modified toughening agent (prepared in this embodiment), and 2 parts of a wear-resistant filler (prepared in this embodiment); mix SiO2, Al2O3, CaO, Fe2O3, and CeO2, draw the mixture, and cool the mixture to obtain glass fiber; S2, putting glass fiber, modified toughening agent and wear-resistant filler into a high-speed mixer for mixing, extrusion and granulation to obtain wear-resistant modified glass fiber; The modified toughening agent is prepared by the following method: Step A1: 0.01 mol of nano-Si3N4 was placed in a vacuum drying oven at 120°C for activation treatment for 2.5 hours, and then 0.01 mol of 3-(2,3-epoxypropoxy)propyltrimethoxysilane, 9 mL of anhydrous ethanol and 1 mL of deionized water were added and mixed. The mixture was ultrasonically stirred for 20 minutes, the pH of the system was adjusted to 5, and the reaction was carried out at 70°C for 6 hours. After the reaction, the mixture was centrifuged at 3500 r / min for 12 minutes, filtered, and dried at 60°C for 24 hours to obtain modified silicon nitride. Step A2: 1 g of modified silicon nitride and 1.34 g of tris(hydroxymethyl)aminomethane were mixed uniformly, and ultrasonicated at a power of 200 W for 3 min. Then, 0.3 mL of dopamine hydrochloride was added, and the mixture was stirred for 24 h. The mixture was washed and filtered to obtain a compound; Step A3: 0.01 mol of the compound, 0.01 mol of polyethyleneimine, and 20 mL of dimethyl sulfoxide were mixed uniformly, stirred for reaction for 4 h, washed, filtered, and dried at 60° C. for 20 h to obtain a modified toughening agent; The wear-resistant filler is prepared by the following method: Step B1: 16 mL of anhydrous ethanol and 7 g of polytetrafluoroethylene were mixed uniformly, stirred for 10 minutes, and then 2 g of 3-aminopropyltriethoxysilane was added. After further stirring for 15 minutes, ultrasonic dispersion was performed for 10 minutes, and the mixture was filtered and dried at 100° C. for 4 hours to obtain a pre-product; Step B2: 0.5 g of graphite oxide, 280 mL of acetone, 50 mL of deionized water and 50 mL of ethanol were mixed evenly, ultrasonically treated for 10 minutes, and then 0.7 g of molybdenum disulfide and 0.5 g of the pre-product were added, stirred for 30 minutes, and reacted at 70°C for 9 hours. After the reaction was completed, the mixture was filtered, washed, and vacuum dried at 60°C for 12 hours to obtain a wear-resistant filler.

[0008] Example 2: A method for preparing wear-resistant modified glass fiber, comprising the following steps: S1. Weigh the raw materials by weight: 47 parts of SiO2, 11.5 parts of Al2O3, 3 parts of CaO2, 1.7 parts of Fe2O3, 1.7 parts of CeO2, 4.7 parts of a modified toughening agent (prepared in this embodiment), and 4.7 parts of a wear-resistant filler (prepared in this embodiment); mix SiO2, Al2O3, CaO, Fe2O3, and CeO2, draw the mixture, and cool it to form a glass fiber; S2, putting glass fiber, modified toughening agent and wear-resistant filler into a high-speed mixer for mixing, extrusion and granulation to obtain wear-resistant modified glass fiber; The modified toughening agent is prepared by the following method: Step A1: 0.017 mol of nano-Si3N4 was placed in a vacuum drying oven at 120°C for activation treatment for 2.5 hours, and then 0.017 mol of 3-(2,3-epoxypropoxy)propyltrimethoxysilane, 15 mL of anhydrous ethanol and 1.7 mL of deionized water were added and mixed, and ultrasonic mechanical stirring was performed for 20 minutes. The pH of the system was adjusted to 5, and the reaction was carried out at 70°C for 6 hours. After the reaction, the mixture was centrifuged at 3500 r / min for 12 minutes, filtered, and dried at 60°C for 24 hours to obtain modified silicon nitride; Step A2: 1 g of modified silicon nitride and 1.57 g of tris(hydroxymethyl)aminomethane were mixed uniformly, and ultrasonicated at a power of 200 W for 5 min. Then, 0.3 mL of dopamine hydrochloride was added, and the mixture was stirred for 24 h. The mixture was washed and filtered to obtain a compound; Step A3: 0.017 mol of the compound, 0.017 mol of polyethyleneimine, and 40 mL of dimethyl sulfoxide were mixed uniformly, stirred for reaction for 4 h, washed, filtered, and dried at 60° C. for 20 h to obtain a modified toughening agent; The wear-resistant filler is prepared by the following method: Step B1: 19 mL of anhydrous ethanol and 9 g of polytetrafluoroethylene were mixed uniformly, stirred for 10 minutes, and then 2.7 g of 3-aminopropyltriethoxysilane was added. After further stirring for 15 minutes, ultrasonic dispersion was performed for 10 minutes, and the mixture was filtered and dried at 100° C. for 4 hours to obtain a pre-product; Step B2: 0.53 g of graphite oxide, 286 mL of acetone, 53 mL of deionized water and 53 mL of ethanol were mixed evenly, ultrasonically treated for 10 minutes, and then 0.7 g of molybdenum disulfide and 0.53 g of the pre-product were added, stirred for 30 minutes, and reacted at 70°C for 9 hours. After the reaction was completed, the mixture was filtered, washed, and vacuum dried at 60°C for 12 hours to obtain a wear-resistant filler.

[0009] Example 3: A method for preparing wear-resistant modified glass fiber, comprising the following steps: S1. Weigh the raw materials by weight: 54 parts of SiO2, 13 parts of Al2O3, 6 parts of CaO2, 2.1 parts of Fe2O3, 2.1 parts of CeO2, 7.1 parts of a modified toughening agent (prepared in this embodiment), and 7.1 parts of a wear-resistant filler (prepared in this embodiment); mix SiO2, Al2O3, CaO, Fe2O3, and CeO2, draw the mixture, and cool it to form a glass fiber; S2, putting glass fiber, modified toughening agent and wear-resistant filler into a high-speed mixer for mixing, extrusion and granulation to obtain wear-resistant modified glass fiber; The modified toughening agent is prepared by the following method: Step A1: 0.024 mol of nano-Si3N4 was placed in a vacuum drying oven at 120°C for activation treatment for 2.5 hours, and then 0.024 mol of 3-(2,3-epoxypropoxy)propyltrimethoxysilane, 21 mL of anhydrous ethanol and 2.1 mL of deionized water were added and mixed, and ultrasonic mechanical stirring was performed for 20 minutes. The pH of the system was adjusted to 5, and the reaction was carried out at 70°C for 6 hours. After the reaction, the mixture was centrifuged at 3500 r / min for 12 minutes, filtered, and dried at 60°C for 24 hours to obtain modified silicon nitride; Step A2: 1 g of modified silicon nitride and 1.8 g of tris(hydroxymethyl)aminomethane were mixed uniformly, and ultrasonicated at a power of 200 W for 7 min. Then, 0.3 mL of dopamine hydrochloride was added, and the mixture was stirred for 24 h. The mixture was washed and filtered to obtain a compound; Step A3: 0.024 mol of the compound, 0.024 mol of polyethyleneimine, and 60 mL of dimethyl sulfoxide were mixed uniformly, stirred for reaction for 4 h, washed, filtered, and dried at 60° C. for 20 h to obtain a modified toughening agent; The wear-resistant filler is prepared by the following method: Step B1: 22 mL of anhydrous ethanol and 10.5 g of polytetrafluoroethylene were mixed uniformly, stirred for 10 minutes, and then 3.4 g of 3-aminopropyltriethoxysilane was added. After further stirring for 15 minutes, ultrasonic dispersion was performed for 10 minutes, and the mixture was filtered and dried at 100° C. for 4 hours to obtain a pre-product; Step B2: 0.56 g of graphite oxide, 292 mL of acetone, 56 mL of deionized water and 56 mL of ethanol were mixed evenly, ultrasonically treated for 10 minutes, and then 0.7 g of molybdenum disulfide and 0.56 g of pre-product were added, stirred for 30 minutes, and reacted at 70°C for 9 hours. After the reaction was completed, the mixture was filtered, washed, and vacuum dried at 60°C for 12 hours to obtain a wear-resistant filler.

[0010] Example 4: A method for preparing wear-resistant modified glass fiber, comprising the following steps: S1. Weigh the raw materials by weight: 60 parts of SiO2, 15 parts of Al2O3, 30 parts of CaO, 3 parts of Fe2O3, 3 parts of CeO2, 10 parts of a modified toughening agent (prepared in this embodiment), and 10 parts of a wear-resistant filler (prepared in this embodiment); mix SiO2, Al2O3, CaO, Fe2O3, and CeO2, draw the mixture, and cool the mixture to obtain glass fiber; S2, putting glass fiber, modified toughening agent and wear-resistant filler into a high-speed mixer for mixing, extrusion and granulation to obtain wear-resistant modified glass fiber; The modified toughening agent is prepared by the following method: Step A1: 0.03 mol of nano-Si3N4 was placed in a vacuum drying oven at 120°C for activation treatment for 2.5 hours, and then 0.03 mol of 3-(2,3-epoxypropoxy)propyltrimethoxysilane, 27 mL of anhydrous ethanol and 3 mL of deionized water were added and mixed, and ultrasonic mechanical stirring was performed for 20 minutes. The pH of the system was adjusted to 5, and the reaction was carried out at 70°C for 6 hours. After the reaction, the mixture was centrifuged at 3500 r / min for 12 minutes, filtered, and dried at 60°C for 24 hours to obtain modified silicon nitride; Step A2: 1 g of modified silicon nitride and 2.02 g of tris(hydroxymethyl)aminomethane were mixed uniformly, and ultrasonicated at a power of 200 W for 10 min. Then, 0.3 mL of dopamine hydrochloride was added, and the mixture was stirred for 24 h. The mixture was washed and filtered to obtain a compound; Step A3: 0.03 mol of the compound, 0.03 mol of polyethyleneimine, and 80 mL of dimethyl sulfoxide were mixed uniformly, stirred for reaction for 4 h, washed, filtered, and dried at 60° C. for 20 h to obtain a modified toughening agent; The wear-resistant filler is prepared by the following method: Step B1: 26 mL of anhydrous ethanol and 12 g of polytetrafluoroethylene were mixed uniformly, stirred for 10 minutes, and then 4 g of 3-aminopropyltriethoxysilane was added. After further stirring for 15 minutes, ultrasonic dispersion was performed for 10 minutes, and the mixture was filtered and dried at 100° C. for 4 hours to obtain a pre-product; Step B2: 0.6 g of graphite oxide, 300 mL of acetone, 60 mL of deionized water and 60 mL of ethanol were mixed evenly, ultrasonically treated for 10 minutes, and then 0.7 g of molybdenum disulfide and 0.6 g of pre-product were added, stirred for 30 minutes, and reacted at 70°C for 9 hours. After the reaction was completed, the mixture was filtered, washed, and vacuum dried at 60°C for 12 hours to obtain a wear-resistant filler.

[0011] Comparative Example 1: This comparative example is a wear-resistant modified glass fiber. The difference from Example 3 is that the modified toughening agent prepared in Example 3 is replaced by an equal amount of nano-silica, and the rest are the same.

[0012] Comparative Example 2: This comparative example is a wear-resistant modified glass fiber. The difference from Example 3 is that an equal amount of silicon carbide is used to replace the wear-resistant filler prepared in Example 3, and the rest are the same.

[0013] Performance test: The wear-resistant modified glass fibers prepared in Examples 1-4 and Comparative Examples 1-2 were woven into fabrics on a loom, and the friction and wear properties of the materials were tested on an MM-200 friction and wear testing machine in accordance with GB3960-83; the wear-resistant modified glass fibers prepared in Examples 1-4 and Comparative Examples 1-2 were tested for breaking strength in accordance with GB / T 7689.5-2013; the test results are shown in Table 1 below: (Oxy)propyltrimethoxysilane, anhydrous ethanol, and deionized water were mixed, ultrasonically stirred for 20 minutes, the pH of the system was adjusted to 5, and the reaction was carried out at 70°C for 6 hours. After the reaction, the mixture was centrifuged at 3500 r / min for 12 minutes, filtered, and dried at 60°C for 24 hours to obtain modified silicon nitride; Furthermore, the usage ratio of nano-Si3N4, 3-(2,3-epoxypropoxy)propyltrimethoxysilane, anhydrous ethanol, and deionized water is 0.01-0.03 mol: 0.01-0.03 mol: 9-27 mL: 1-3 mL; First, nano-Si3N4 is modified with 3-(2,3-epoxypropoxy)propyltrimethoxysilane to obtain modified silicon nitride; Step A2: The modified silicon nitride and tris(hydroxymethyl)aminomethane were mixed uniformly, and ultrasonicated at a power of 200 W for 3-10 minutes, and then dopamine hydrochloride was added. The mixture was stirred for 24 hours, washed, and filtered to obtain a compound; Furthermore, the mass ratio of modified silicon nitride, tris(hydroxymethyl)aminomethane, and dopamine hydrochloride is 1 g:1.34-2.02 g:0.3 mL; Secondly, dopamine is oxidized to form polydopamine and the surface of modified silicon nitride is modified to obtain a hydroxyl-containing compound; Step A3: uniformly mix the compound, polyethyleneimine and dimethyl sulfoxide, stir and react for 4 hours, wash, filter, and dry at 60° C. for 20 hours to obtain a modified toughening agent; Furthermore, the ratio of the compound, polyethyleneimine, and dimethyl sulfoxide is 0.01-0.03 mol: 0.01-0.03 mol: 20-80 mL; Finally, the hydroxyl group of the compound reacts with the amino group of polyethyleneimine to generate a modified toughening agent.

[0014] The wear-resistant filler is prepared by the following method: Step B1: Anhydrous ethanol and polytetrafluoroethylene were mixed evenly, stirred for 10 minutes, and then 3-aminopropyltriethoxysilane was added. After stirring for 15 minutes, ultrasonic dispersion was performed for 10 minutes, and the mixture was filtered and dried at 100° C. for 4 hours to obtain a pre-product; Furthermore, the usage ratio of anhydrous ethanol, polytetrafluoroethylene, and 3-aminopropyltriethoxysilane is 16-26 mL: 7-12 g: 2-4 g; First, the surface of polytetrafluoroethylene is modified with 3-aminopropyltriethoxysilane to prepare a pre-product; Step B2: Graphite oxide, acetone, deionized water, and ethanol were mixed uniformly, and ultrasonically treated for 10 minutes. Molybdenum disulfide and the pre-product were then added, stirred for 30 minutes, and reacted at 70°C for 9 hours. After the reaction, the mixture was filtered, washed, and vacuum-dried at 60°C for 12 hours to obtain a wear-resistant filler. Furthermore, the usage ratio of graphite oxide, acetone, deionized water, ethanol, molybdenum disulfide, and pre-product is 0.5-0.6 g: 280-300 mL: 50-60 mL: 50-60 mL: 0.7 g: 0.5-0.6 g; Finally, graphite oxide, molybdenum disulfide and the pre-product were combined using a low-temperature solvothermal method to generate a wear-resistant filler.

[0015] A method for preparing wear-resistant modified glass fiber specifically comprises the following steps: S1. Mix SiO2, Al2O3, CaO, Fe2O3 and CeO2, draw the mixture, and cool the mixture to form glass fiber; S2. Put glass fiber, modified toughening agent and wear-resistant filler into a high-speed mixer for mixing, extrusion and granulation to obtain wear-resistant modified glass fiber.

[0016] Beneficial effects of the present invention: The wear-resistant modified glass fiber of the present invention has a good toughening effect and also has an excellent wear-resistant effect, thereby extending the service life.

[0017] In the modified toughening agent prepared by the present invention, the polydopamine molecular chain has flexibility and elasticity, deforms when subjected to force, plays a buffering role, absorbs and disperses part of the energy, reduces the stress transmitted to the glass fiber, and reduces the risk of its breakage. In addition, when cracks in the material expand, the polydopamine layer can cause the cracks to deflect, change the crack expansion path, increase the resistance to crack expansion, reduce the generation and further expansion of cracks, and synergize with the modified silicon nitride to increase the toughness of the material. At the same time, the polydopamine molecular chain can also form bridges between cracks to prevent the continued expansion of the cracks, thereby improving the toughness of the material. In addition, polyethyleneimine, as a high molecular polymer, has good adhesion and bonding properties. When in contact with glass fiber, it is firmly bonded to its surface through intermolecular interaction forces. At the same time, the polyethyleneimine molecules can also react with the hydroxyl groups on the surface of the glass fiber, enhancing the combination of polyethyleneimine and glass fiber at the molecular level, improving adhesion, and then strengthening the interfacial bonding force with the glass fiber, making the material less likely to be damaged when subjected to external force, and effectively improving toughness.

[0018] The wear-resistant filler produced by the present invention can fill the gaps between glass fibers, reduce the occurrence of defects, and improve the overall performance of the material. The graphite oxide in the wear-resistant filler imparts strength and heat resistance, while molybdenum disulfide provides lubricity. The pre-product helps improve interfacial properties, thereby enhancing the mechanical properties, wear resistance, and stability of the glass fiber. Simultaneously, the optimized microstructure enhances the interfacial bonding strength and mechanical properties of the material. Furthermore, polytetrafluoroethylene (PTFE) exhibits excellent stability due to its high C-F bond energy. Furthermore, PTFE has a low coefficient of friction and self-lubricity, which synergizes with the crystalline structure of molybdenum disulfide to further enhance the wear resistance and lubricity of the glass fiber. Furthermore, 3-aminopropyltriethoxysilane acts as a bridge, tightly connecting the PTFE and molybdenum disulfide, enhancing interfacial bonding, further improving the wear resistance, and extending the service life of the material. DETAILED DESCRIPTION

[0019] Table 1

[0020] From the test data in Table 1, it can be seen that the wear-resistant modified glass fiber prepared by the present invention has good wear resistance. From Table 1, it can also be seen that the wear-resistant modified glass fiber prepared by the present invention has good toughening effect and prolongs the service life.

[0021] The above content is merely an example and explanation of the concept of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the claims, they should all fall within the scope of protection of the present invention.

Claims

1. A method for preparing wear-resistant modified glass fiber, characterized in that: The specific steps include: S1. Weigh the raw materials by weight: 40-60 parts of SiO2, 10-15 parts of Al2O3, 20-30 parts of CaO, 1-3 parts of Fe2O3, 1-3 parts of CeO2, 2-10 parts of a modified toughening agent, and 2-10 parts of a wear-resistant filler; mix SiO2, Al2O3, CaO, Fe2O3, and CeO2, draw the mixture, and cool the mixture to obtain glass fiber; S2, putting glass fiber, modified toughening agent and wear-resistant filler into a high-speed mixer for mixing, extrusion and granulation to obtain wear-resistant modified glass fiber; The modified toughening agent is prepared by the following method: Step A1: Place nano-Si3N4 in a vacuum drying oven at 120°C for activation treatment for 2.5 hours, then add 3-(2,3-epoxypropoxy)propyltrimethoxysilane, anhydrous ethanol and deionized water, mix, ultrasonically stir for 20 minutes, adjust the system pH to 5, react at 70°C for 6 hours, and after the reaction is completed, centrifuge at 3500 r / min for 12 minutes, filter, and dry at 60°C for 24 hours to obtain modified silicon nitride; Step A2: The modified silicon nitride and tris(hydroxymethyl)aminomethane were mixed uniformly, and ultrasonicated at a power of 200 W for 3-10 minutes, and then dopamine hydrochloride was added. The mixture was stirred for 24 hours, washed, and filtered to obtain a compound; Step A3: The compound, polyethyleneimine and dimethyl sulfoxide were mixed evenly, stirred and reacted for 4 hours, washed, filtered, and dried at 60° C. for 20 hours to obtain a modified toughening agent.

2. The method for preparing a wear-resistant modified glass fiber according to claim 1, wherein: In step A1, the usage ratio of nano-Si3N4, 3-(2,3-epoxypropoxy)propyltrimethoxysilane, anhydrous ethanol, and deionized water is 0.01-0.03 mol: 0.01-0.03 mol: 9-27 mL: 1-3 mL.

3. The method for preparing a wear-resistant modified glass fiber according to claim 1, characterized in that: In step A2, the mass ratio of modified silicon nitride, tris(hydroxymethyl)aminomethane, and dopamine hydrochloride is 1 g:1.34-2.02 g:0.3 mL.

4. The method for preparing a wear-resistant modified glass fiber according to claim 1, wherein: In step A3, the usage ratio of the compound, polyethyleneimine, and dimethyl sulfoxide is 0.01-0.03 mol: 0.01-0.03 mol: 20-80 mL.

5. The method for preparing a wear-resistant modified glass fiber according to claim 1, characterized in that: The wear-resistant filler is prepared by the following method: Step B1: Anhydrous ethanol and polytetrafluoroethylene were mixed evenly, stirred for 10 minutes, and then 3-aminopropyltriethoxysilane was added. After stirring for 15 minutes, ultrasonic dispersion was performed for 10 minutes, and the mixture was filtered and dried at 100° C. for 4 hours to obtain a pre-product; Step B2: Graphite oxide, acetone, deionized water and ethanol were mixed evenly, ultrasonically treated for 10 minutes, and then molybdenum disulfide and the pre-product were added, stirred for 30 minutes, and reacted at 70°C for 9 hours. After the reaction was completed, the mixture was filtered, washed, and vacuum dried at 60°C for 12 hours to obtain a wear-resistant filler.

6. The method for preparing a wear-resistant modified glass fiber according to claim 5, characterized in that: In step B1, the usage ratio of anhydrous ethanol, polytetrafluoroethylene, and 3-aminopropyltriethoxysilane is 16-26 mL: 7-12 g: 2-4 g.

7. The method for preparing a wear-resistant modified glass fiber according to claim 5, characterized in that: In step B2, the usage ratio of graphite oxide, acetone, deionized water, ethanol, molybdenum disulfide, and pre-product is 0.5-0.6 g: 280-300 mL: 50-60 mL: 50-60 mL: 0.7 g: 0.5-0.6 g.

8. A wear-resistant modified glass fiber, characterized in that: Prepared according to the preparation method according to any one of claims 1 to 7.

Images