A photocatalytic high antibacterial polyaryletherketone composite material and its preparation method

Abstract

The present invention relates to the technical field of polyaryletherketone modification, and particularly relates to a photocatalytic highly antibacterial polyaryletherketone composite material and a preparation method thereof. First, polyaryletherketone is mixed with a molten solid good solvent, and after stirring and mixing evenly, the whole system is cooled at a lower cooling rate to solidify, and then extracted and dried to obtain porous polyaryletherketone; then the obtained porous polyaryletherketone is added to an inorganic antibacterial agent sol, and after ultrasonic stirring and mixing, it is dried at a drying temperature higher than the glass transition temperature of the porous polyaryletherketone and lower than the melting point temperature, and then extruded, granulated and formed or directly formed to obtain a photocatalytic highly antibacterial polyaryletherketone composite material; in the present invention, the inorganic antibacterial agent sol is loaded in the pores of the porous polyaryletherketone, and in-situ generated nano-antibacterial agents are loaded in its pores. The melt blending makes the nano-antibacterial agents more uniformly dispersed, improving the processing performance and at the same time enabling the composite material prepared by subsequent forming to have excellent antibacterial performance and good mechanical properties.

Description

Technical Field

[0001] The present invention relates to the technical field of polyaryletherketone modification, and particularly relates to a photocatalytic highly antibacterial polyaryletherketone composite material and a preparation method thereof. Background Art

[0002] Polyetheretherketone (PEEK) has been widely used in the fields of aerospace, automotive, electronics, etc. due to its unique properties. With the development of materials science and biomedical engineering, PEEK, as a high-performance thermoplastic polymer material, has gradually shown great potential in the medical field.

[0003] PEEK has good thermal stability, with a melting point as high as 343 °C, and can maintain stable performance in high-temperature environments, being suitable for various processing techniques. At the same time, PEEK has excellent chemical stability, is resistant to acid and alkali corrosion, and is not easily damaged by chemicals. In terms of mechanical properties, PEEK has characteristics such as high strength, high modulus, and low wear rate, making it perform excellently under load and friction environments. In the biomedical field, the light transmittance, biocompatibility, and chemical resistance of PEEK make it an ideal implant material. Compared with traditional metal implant components, PEEK has an elastic modulus closer to that of human bone, which can effectively reduce the stress shielding effect and promote bone integration.

[0004] However, the inherent biological inertness of PEEK limits its application in the medical field. Bacteria are prone to adhere and proliferate on the surface of PEEK materials, leading to inflammatory reactions and then affecting the stability of implants. This problem is particularly prominent in the fields of orthopedics and trauma and has become the main cause of implant failure. To solve this problem, researchers usually melt-blend polyetheretherketone with antibacterial materials such as nano-titanium dioxide, nano-zinc oxide, etc. to prepare composite materials. However, due to their high specific surface area and small size effect, nanoparticles are usually prone to agglomeration, resulting in uneven dispersion in the melt and ineffective performance of the materials. Therefore, how to achieve uniform dispersion of inorganic nano-antibacterial materials in PEEK and ensure long-term stability remains the main challenge in current research. Summary of the Invention

[0005] In order to solve the above technical problems, a photocatalytic highly antibacterial polyaryletherketone composite material and a preparation method thereof are provided. In the present invention, an inorganic antibacterial agent sol is loaded in the pores of porous polyaryletherketone, which improves the processing performance and enables the composite material prepared by subsequent molding to have excellent antibacterial performance and good mechanical properties.

[0006] To achieve the above object, the present invention is realized through the following technical solutions:

[0007] A preparation method of a photocatalytic highly antibacterial polyaryletherketone composite material includes the following steps:

[0008] S1. Preparation of porous polyaryletherketone: Mix polyaryletherketone with a solid good solvent, heat it until the solid good solvent melts and the polyaryletherketone dissolves, stir and mix evenly, then cool down at a cooling rate of 0.1 - 5 °C / min to solidify the whole system (the polyaryletherketone recrystallizes) to obtain an intermediate product, extract the solid good solvent contained in the intermediate product, and dry it to obtain porous polyaryletherketone;

[0009] S2. Preparation of composite material: Add the porous polyaryletherketone into an inorganic antibacterial agent sol, stir and mix ultrasonically, then dry at a drying temperature higher than the glass transition temperature and lower than the melting temperature of the porous polyaryletherketone, and then extrude and pelletize or directly form to obtain a photocatalytic high antibacterial polyaryletherketone composite material. Forming processes such as injection molding and compression molding can be used.

[0010] Furthermore, the pore size of the porous polyaryletherketone is 30 - 50 nm, and the porosity is in the range of 80% - 90%. In this range, the specific surface area of the porous polyaryletherketone is in the range of 130 - 170 m 2 / g, and the density is in the range of 1.3 - 1.4 g / cm 3 . The colloidal particle size of the inorganic antibacterial agent sol is smaller than the pore size of the porous polyaryletherketone, which can ensure inflow and loading.

[0011] Furthermore, the solid good solvent is selected from one of diphenyl sulfone and p-phenylphenol.

[0012] Furthermore, in S1, the temperature for heating until the solid good solvent melts and the polyaryletherketone dissolves is in the range of 168 °C - 200 °C, and the time for stirring and mixing evenly is in the range of 10 min - 60 min.

[0013] Further, the cooling rate in S1 ranges from 0.5 to 3 °C / min; the temperature at which the whole system solidifies during the temperature drop is 100 °C - 120 °C; the mass percentage range of the polyaryletherketone to the solid good solvent is 10% - 30%: 70% - 90%; the extraction is carried out with absolute ethanol or absolute methanol for at least 24 hours. The density and porosity of the porous polyaryletherketone are controlled by the concentration of polyaryletherketone in the system. Increasing the concentration of polyaryletherketone results in an increase in density and a decrease in porosity. High-porosity materials have a larger specific surface area and internal space, which is conducive to the stable loading and uniform dispersion of the active ingredients in the subsequent inorganic antibacterial agent sol. By controlling the cooling rate of the system, the crystallinity of the solute polyaryletherketone in the good solvent can be regulated (a low cooling rate allows PEEK to have a longer crystallization time at a temperature above Tg, resulting in a higher crystallinity, forming a more uniform microporous structure of PEEK with a denser and larger skeleton, and simultaneously generating a higher specific surface area; increasing the cooling rate makes the crystallization process occur rapidly, and the crystallinity relatively decreases). High crystallinity can cause the polyaryletherketone molecules to pack closely, thereby obtaining porous polyaryletherketone with better mechanical properties compared to sulfonated polyetheretherketone.

[0014] Further, after drying at a drying temperature greater than the glass transition temperature and less than the melting point temperature of the porous polyaryletherketone in S2, the inorganic antibacterial agent is obtained by in-situ reaction of the inorganic antibacterial agent sol. The drying temperature is set according to the glass transition temperature and melting point temperature of the corresponding polyaryletherketone. For example, the glass transition temperature of PEEK is about 143 °C and the melting point is about 340 - 350 °C, then the drying temperature can be set to 160 °C - 250 °C, and the drying time is at least 12 hours to completely decompose the sol therein to form the corresponding inorganic antibacterial agent.

[0015] Still further, the inorganic antibacterial agent is selected from one or more of nano-zinc oxide, nano-aluminum oxide, nano-silicon dioxide, nano-titanium dioxide, nano-copper oxide, and nano-silver oxide;

[0016] The inorganic antibacterial agent sol is obtained by mixing a solution of one or more of a zinc source, an aluminum source, a silicon source, a titanium source, a copper source, and a silver source with an alkaline solution. The zinc source, aluminum source, titanium source, copper source, and silver source usually use their corresponding sulfates, nitrates, chlorides, etc., and the silicon source usually uses silicate. The solution can be pure water or a mixed solution of water and alcohol.

[0017] Further, the mass fraction of the inorganic antibacterial agent sol is 5% - 6%; the mass-volume ratio range of the porous polyaryletherketone to the inorganic antibacterial agent sol is 1 g / 1.8 - 3 mL.

[0018] Further, the polyaryletherketone is selected from polyetheretherketone (PEEK), polyetherketone (PEK), polyetherketoneketone (PEKK), polyetheretherketoneketone (PEEKK), and polyetherketoneetherketoneketone (PEKEKK), and the melt index is in the range of 8-10 g / 10 min.

[0019] Further, the proportion of the inorganic antibacterial agent in the photocatalytic highly antibacterial polyaryletherketone composite material is 8 wt%-10 wt%.

[0020] On the other hand, the present invention provides a photocatalytic highly antibacterial polyaryletherketone composite material obtained by the above preparation method.

[0021] Beneficial technical effects:

[0022] In the present invention, a porous polyaryletherketone with a certain pore size and a large porosity is prepared through a process of dissolution, coagulation, and extraction. The pore distribution is uniform. Then, the inorganic antibacterial agent sol is loaded in the pores, and nano-inorganic antibacterial agents are in-situ generated and loaded in the polyaryletherketone. Then, it is directly molded or molded after extrusion granulation to obtain antibacterial polyaryletherketone. The method of the present invention can make the inorganic nanoparticles disperse more uniformly in the matrix. On the basis of the composite material having good mechanical properties, it has better antibacterial properties and biocompatibility. At the same time, the antibacterial agent can perform photocatalytic action to further play a bactericidal role. The composite material of the present invention is expected to be more widely used in the fields of orthopedics, trauma, oral cavity, etc. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Unless otherwise specifically stated, the values set forth in these embodiments do not limit the scope of the present invention. Technologies and methods known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, such technologies and methods should be regarded as part of the specification. In all examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0025] In the following embodiments, the experimental methods without specific conditions are usually determined according to national standards; if there is no corresponding national standard, they are carried out according to general standard requirements or general methods.

[0026] Preparation Example

[0027] Preparation of Zn(OH)2 sol: At room temperature, 1000 mL of 2.4 mol / L NaOH aqueous solution was added dropwise (dropwise addition rate: 20 mL / min) to 1000 mL of 1.23 mol / L ZnSO4 aqueous solution, and the mixture was stirred and reacted at 800 rpm for 3 hours to form a homogeneous sol of Zn(OH)2 with a particle size of about 20 nm (5 wt%).

[0028] Preparation of zinc-aluminum sol: At room temperature, 1000 mL of 4.2 mol / L NaOH aqueous solution was added dropwise (dropwise addition rate: 20 mL / min) to 500 mL of 1.2 mol / L ZnSO4 aqueous solution and 500 mL of 1 mol / L Al2(SO4)3 aqueous solution (the ZnSO4 aqueous solution and the Al2(SO4)3 aqueous solution were premixed evenly), and the mixture was stirred and reacted at 800 rpm for 4 hours to form a homogeneous sol of zinc-aluminum with a particle size of about 5 - 30 nm (5 wt%).

[0029] Preparation of zinc-titanium sol: At room temperature, 1000 mL of 1.2 mol / L NaOH aqueous solution was added dropwise (dropwise addition rate: 20 mL / min) to 500 mL of 1.24 mol / L ZnSO4 aqueous solution and 500 mL of 10 wt% titanium dioxide sol (the ZnSO4 aqueous solution and the titanium dioxide sol were premixed evenly), and the mixture was stirred and reacted at 800 rpm for 5 hours to form a homogeneous sol of zinc-titanium with a particle size of about 5 - 20 nm (5 wt%).

[0030] Example 1

[0031] A preparation method of a photocatalytic highly antibacterial polyaryletherketone composite material, comprising the following steps:

[0032] S1. Preparation of porous PEEK: 200 g of polyetheretherketone and 800 g of p-phenylphenol powder were mechanically mixed evenly, heated to 180 °C to melt p-phenylphenol to form a liquid good solvent, and then stirred for 20 min to dissolve PEEK evenly in the liquid good solvent to form a clear solution. Then, the stirring was stopped and the temperature was lowered at a cooling rate of 1 °C / min. During the cooling process, the solution gradually became turbid, and the whole system solidified to produce a gel. Further, the temperature was lowered to 120 °C to obtain an intermediate product; p-phenylphenol was removed by Soxhlet extraction with absolute ethanol for 48 h, and then dried to a constant weight in a vacuum oven at 60 °C to obtain porous PEEK with a pore size of about 40 - 50 nm and a porosity of about 85% - 88%;

[0033] S2. Composite material preparation: A total of 900 g of the porous PEEK was divided into 5 batches and added to the previously prepared 2000 mL of Zn(OH)₂ sol. It was ultrasonically stirred (ultrasonic power 120 W, frequency 20 - 50 Hz, stirring rate 800 - 1000 rpm) for 60 min. Through ultrasonic stirring, nano-scale Zn(OH)₂ was uniformly loaded into the micron-sized pores on the surface of the porous PEEK. Then it was placed in a vacuum drying oven and kept at 160 °C for heat preservation and drying for 72 hours. During the drying process, Zn(OH)₂ decomposed into ZnO at high temperature, obtaining ZnO@PEEK composite material. It was ground into fine powder, extruded and pelletized at 360 - 380 °C and then injection molded to obtain a photocatalytic and highly antibacterial polyether ether ketone composite material, where the proportion of ZnO was 10 wt%.

[0034] Example 2

[0035] A preparation method of a photocatalytic and highly antibacterial polyaryletherketone composite material, comprising the following steps:

[0036] S1. Porous PEEK preparation: 250 g of polyether ether ketone and 750 g of p-phenylphenol powder were mechanically mixed evenly. After heating to 200 °C to melt p-phenylphenol to form a liquid good solvent, stirring was continued for 15 min to uniformly dissolve PEEK in the liquid good solvent to form a clear solution. Then stirring was stopped and the temperature was decreased at a cooling rate of 0.5 °C / min. During the temperature decrease process, the solution gradually became turbid, and the whole system solidified to produce a gel. Further cooling to 110 °C, an intermediate product was obtained; p-phenylphenol was removed by Soxhlet extraction with absolute ethanol for 60 h, and then dried to constant weight in a vacuum oven at 60 °C to obtain porous PEEK, with a pore size of about 30 - 40 nm and a porosity of about 85% - 88%;

[0037] S2. Composite material preparation: A total of 900 g of the porous PEEK was divided into 8 batches and added to the previously prepared 2000 mL of zinc-aluminum sol. It was ultrasonically stirred (ultrasonic power 110 W, frequency 20 - 50 Hz, stirring rate 800 - 1000 rpm) for 60 min. Through ultrasonic stirring, nano-scale zinc-aluminum hydroxide was uniformly loaded into the micron-sized pores on the surface of the porous PEEK. Then it was placed in a vacuum drying oven and kept at 220 °C for heat preservation and drying for 72 hours. During the drying process, zinc-aluminum hydroxide decomposed into aluminum-doped zinc oxide AZO at high temperature, obtaining AZO@PEEK composite material. It was ground into fine powder, extruded and pelletized at 360 - 380 °C and then injection molded to obtain a photocatalytic and highly antibacterial polyether ether ketone composite material, where the proportion of AZO was 10 wt% (the proportion of zinc oxide in AZO was 5 wt%).

[0038] Example 3

[0039] A preparation method of a photocatalytic and highly antibacterial polyaryletherketone composite material, comprising the following steps:

[0040] S1. Preparation of porous PEEK: Mechanically mix 150 g of polyetheretherketone and 850 g of p-phenylphenol powder evenly. After heating to 170 °C to melt p-phenylphenol to form a liquid good solvent, continue stirring for 25 min to uniformly dissolve PEEK in the liquid good solvent to form a clear solution. Then stop stirring and cool at a rate of 2 °C / min. During the cooling process, the solution gradually becomes turbid, and the whole system solidifies to produce a gel. Further cool to 120 °C to obtain an intermediate product. Remove p-phenylphenol by Soxhlet extraction with absolute ethanol for 52 h, and then dry in a vacuum oven at 60 °C to constant weight to obtain porous PEEK with a pore size of about 45 - 50 nm and a porosity of about 85% - 88%.

[0041] S2. Preparation of composite material: A total of 900 g of the porous PEEK is divided into 6 batches and added to the previously prepared 2000 mL of zinc-titanium sol. Ultrasonically stir (ultrasonic power 130 W, frequency 20 - 50 Hz, stirring rate 800 - 1000 rpm) for 60 min. Through ultrasonic stirring, the micron pores on the surface of the porous PEEK are uniformly loaded with nano-scale Zn(OH)₂-coated titanium dioxide sol particles. Then place it in a vacuum drying oven and keep it warm and dry at 160 °C for 72 hours. During the drying process, the Zn(OH)₂-coated titanium dioxide sol particles are thermally decomposed into zinc oxide-coated titanium dioxide to obtain zinc oxide-coated titanium dioxide@PEEK composite material. Grind it into fine powder, extrude and granulate at 360 - 380 °C and then injection mold to obtain a photocatalytic and highly antibacterial polyetheretherketone composite material, where the proportion of zinc oxide-coated titanium dioxide is 10 wt% (where the proportion of zinc oxide is 5 wt%).

[0042] Comparative Example 1

[0043] The preparation of the composite material in this example is as follows: Directly melt-blend and granulate sulfonated polyetheretherketone (sulfonation degree 60 - 65%) with nano-zinc oxide (average particle size 40 - 50 nm) and injection mold (the operation is the same as in Example 1) to obtain an antibacterial polyetheretherketone composite material, where the proportion of nano-zinc oxide is 12 wt%.

[0044] Comparative Example 2

[0045] The preparation process of the composite material in this example is the same as that in Example 1, except that: there is no porous PEEK in S1, and in S2, sulfonated polyetheretherketone (sulfonation degree 65 - 70%) is mixed with Zn(OH)₂ sol, and the subsequent operations are the same as in Example 1.

[0046] Comparative Example 3

[0047] The preparation process of the composite material in this example is the same as that in Example 1, except that: the cooling rate in S1 is 10 °C / min.

[0048] Comparative Example 4

[0049] The preparation process of the composite material in this example is the same as that in Example 1, except that: in S1, 400 g of polyether ether ketone and 600 g of p-phenylphenol powder are taken.

[0050] Comparative Example 5

[0051] The preparation process of the composite material in this example is the same as that in Example 1, except that: in S2, the porous PEEK prepared in S1 is directly melt-blended and extruded into pellets and injection-molded (the operation is the same as that in Example 1) with nano-zinc oxide (the particle size is the same as that in Comparative Example 1) to obtain an antibacterial polyether ether ketone composite material, where the proportion of nano-zinc oxide is 12 wt%.

[0052] The performance of the composite materials of the above examples was tested, and the results are shown in Table 1.

[0053] Table 1 Performance of Composite Materials in Each Example

[0054]

[0055]

[0056] As can be seen from Table 1, the present invention prepares a porous polyaryletherketone with a certain pore size and a large porosity through a process of dissolution, solidification, and extraction, and then in-situ loads a nano-antibacterial agent to form a composite material. Due to the uniform pore distribution on the surface and inside of the porous matrix, the composite material has a tensile strength greater than 120 MPa and a flexural strength greater than 170 MPa. It not only has a relatively high thermal conductivity and good heat transfer performance, but also has high antibacterial properties in the dark and under light.

[0057] In Comparative Example 1, a composite material was prepared by directly melt-blending sulfonated PEEK with nano-zinc oxide. In Comparative Example 2, sulfonated polyether ether ketone was mixed with the Zn(OH)2 sol prepared in the Preparation Example to in-situ generate nano-zinc oxide and then melt-blended to prepare a composite material. Since both of them used sulfonated polyether ether ketone, due to the uneven pore distribution and most of the pores being distributed on the surface of the material, the phenomenon of uneven blending of PEEK and nano-zinc oxide occurred, thereby affecting the overall mechanical properties, antibacterial properties, and photocatalytic antibacterial properties of the composite material. In Comparative Example 3, a relatively large cooling rate was used, which caused the crystallization process of PEEK to occur rapidly during solidification, and the crystallinity decreased relatively, thereby affecting the mechanical properties of the matrix. In Comparative Example 4, the solid content of PEEK in the system was increased, which reduced the porosity of the porous material and had an adverse effect on the stable loading and uniform dispersion of the active components in the subsequent inorganic antibacterial agent sol. Compared with Example 1, its mechanical properties were adversely affected. In Comparative Example 5, nano-zinc oxide was not formed in-situ in porous PEEK. Due to the inevitable existence of relatively large nano-zinc oxide particles in the average particle size, it was difficult to load, which led to an increase in the amount of directly used nano-zinc oxide and uneven loading of nano-zinc oxide in the pores. Compared with Example 1, its mechanical properties and antibacterial properties were adversely affected.

[0058] As mentioned above, the above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A preparation method of a photocatalytic high antibacterial polyaryletherketone composite material, characterized in that, It includes the following steps: S1. Preparation of porous polyaryletherketone: Mix polyaryletherketone with a solid good solvent, heat it until the solid good solvent melts and the polyaryletherketone dissolves, stir and mix evenly, then cool down at a cooling rate of 0.1 - 5 °C / min to solidify the whole system to obtain an intermediate product, extract the solid good solvent contained in the intermediate product, and dry it to obtain porous polyaryletherketone; The mass percentage range of the polyaryletherketone to the solid good solvent is 10% - 30%: 70% - 90%; S2. Preparation of composite material: Add the porous polyaryletherketone into an inorganic antibacterial agent sol, stir and mix ultrasonically, then dry at a drying temperature higher than the glass transition temperature and lower than the melting point temperature of the porous polyaryletherketone, and then extrude and granulate or directly form to obtain a photocatalytic and highly antibacterial polyaryletherketone composite material.

2. The preparation method of a photocatalytic high antibacterial polyaryletherketone composite material according to claim 1, characterized in that, The pore size of the porous polyaryletherketone is 30 - 50 nm, and the porosity is in the range of 80% - 90%.

3. The preparation method of a photocatalytic high antibacterial polyaryletherketone composite material according to claim 2, characterized in that, The solid good solvent is selected from one of diphenyl sulfone and p-phenylphenol.

4. The preparation method of a photocatalytic highly antibacterial polyaryletherketone composite material according to claim 3, characterized in that, In S1, the temperature for heating until the solid good solvent melts and the polyaryletherketone dissolves is in the range of 168 °C - 200 °C, and the time for stirring and mixing evenly is in the range of 10 min - 60 min.

5. The preparation method of a photocatalytic high antibacterial polyaryletherketone composite material according to claim 3, characterized in that, In S1, the cooling rate is in the range of 0.5 - 3 °C / min; the temperature for cooling down to solidify the whole system is 100 °C - 120 °C.

6. The preparation method of a photocatalytic high antibacterial polyaryletherketone composite material according to claim 3, characterized in that, In S2, after drying at a drying temperature higher than the glass transition temperature and lower than the melting point temperature of the porous polyaryletherketone, the inorganic antibacterial agent sol undergoes an in-situ reaction to obtain an inorganic antibacterial agent.

7. The preparation method of a photocatalytic high antibacterial polyaryletherketone composite material according to claim 6, characterized in that, The inorganic antibacterial agent is selected from one or more composites of nano-zinc oxide, nano-aluminum oxide, nano-silicon dioxide, nano-titanium dioxide, nano-copper oxide, and nano-silver oxide; The inorganic antibacterial agent sol is obtained by mixing a solution of one or a composite solution of zinc source, aluminum source, silicon source, titanium source, copper source, and silver source with an alkaline solution to obtain the corresponding sol.

8. The preparation method of a photocatalytic high antibacterial polyaryletherketone composite material according to claim 6, characterized in that, The mass fraction of the inorganic antibacterial agent sol is 5% - 6%; the mass-volume ratio range of the porous polyaryletherketone to the inorganic antibacterial agent sol is 1 g / 1.8 - 3 mL.

9. The preparation method of a photocatalytic highly antibacterial polyaryletherketone composite material according to claim 6, wherein, The polyaryletherketone is selected from polyetheretherketone, polyetherketone, polyetherketoneketone, polyetheretherketoneketone, and polyetherketoneetherketoneketone, and the melt index is in the range of 8 - 10 g / 10 min.

10. The photocatalytic highly antibacterial polyaryletherketone composite material prepared by the preparation method according to any one of claims 1-9, characterized in that, In the photocatalytic and highly antibacterial polyaryletherketone composite material, the proportion of the inorganic antibacterial agent is 8 wt% - 10 wt%.

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