1. The super-hydrophobic polyether-ether-ketone material is characterized by comprising the following components in percentage by mole:

2. the superhydrophobic polyetheretherketone material of claim 1, wherein the modified SiO is₂The granules are prepared by the following steps:

adding ammonia water and silica sol into water, and uniformly stirring to obtain a first mixed solution;

adding a surfactant into the first mixed solution, and uniformly stirring to obtain a second mixed solution;

dropwise adding fluorosilicone into the second mixed solution, and stirring for 12-20 hours to obtain a third mixed solution; -

Drying the third mixed solution in an oven to obtain the modified SiO₂And (3) granules.

3. The superhydrophobic polyetheretherketone material of claim 2, wherein the modified SiO is₂In the preparation process of the particles, the ammonia water is 3 to 6 percent according to the mass percentage0.5-1% of silica sol, 0.5-1% of surfactant, 0.5-1.5% of fluorosilicone and 92.5-93.5% of water.

4. The superhydrophobic polyetheretherketone material of claim 3, wherein the surfactant is an anionic surfactant: one or more of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and sodium alkenyl sulfonate, or a nonionic surfactant: one or more of long-chain fatty alcohol-polyoxyethylene ether, alkylphenol ethoxylate, fatty acid-polyoxyethylene ester, polyoxyethylene alkylamine and polyoxyethylene alkylamide.

5. The superhydrophobic polyetheretherketone material of claim 3, wherein the silica sol is one or more of silica sol having a solids content of 10% to 20%.

6. The superhydrophobic polyetheretherketone material of claim 1, wherein the modified SiO is₂The particle size of the particles is 30-40 nm.

7. A method for preparing a superhydrophobic polyetheretherketone material, for use in the preparation of a superhydrophobic polyetheretherketone material according to any one of claims 1 to 6, comprising the steps of:

adding 4, 4' -difluorobenzophenone and hydroquinone into diphenyl sulfone for mixing, and then heating to 140-160 ℃ under the protection of nitrogen to obtain an intermediate mixed solution;

modifying SiO₂Adding the particles into the intermediate mixed solution, keeping the temperature at 140-160 ℃, and stirring for 0.5-1 h to obtain an intermediate product;

adding alkali carbonate into the intermediate product, and heating to obtain a reaction product;

and crystallizing, separating out, crushing, screening, extracting, washing and filter-pressing the reaction product to obtain the super-hydrophobic polyether-ether-ketone material.

8. The method for preparing the superhydrophobic polyetheretherketone material of claim 7, wherein the step of adding an alkali carbonate to the intermediate product and heating to obtain a reaction product comprises:

adding alkali carbonate into the intermediate product, heating to 200 ℃ within 1h, preserving heat at 200 ℃ for 1h, then heating to 250 ℃ within 1h, preserving heat at 250 ℃ for 15-30 min, then heating to 300-350 ℃ within 1h, and preserving heat for 2-3 h.

Background

Polyether ether ketone (PEEK) belongs to a special polymer material, and a main chain structure of the polyether ether ketone contains two ether bonds and one ketone bond, and a semi-crystalline polymer is formed by repeating units of the polyether ether ketone. After being successfully developed in the end of the 70's of the 20 th century, the material has proved to have excellent characteristics of high temperature resistance, greater rigidity and flexibility, self-lubricating property, flame retardance and the like. The glass transition temperature of the polyether-ether-ketone material is 143 ℃, and the material is meltedPoint 334 deg.C, the density of the crystalline material is about 1.32g/cm³The maximum crystallinity can be reached to about 49 percent, so the polyether-ether-ketone has good mechanical property, mechanical property and heat resistance, and has wide application prospect in the fields of aerospace, automobile manufacturing, insulating materials, medical appliances and the like. In the polyether-ether-ketone material prepared by the traditional method, more hydrophilic ether bonds exist in a molecular chain, so that the surface of the polyether-ether-ketone material has larger adhesion with water or an aqueous solution, and in actual application, if liquid adhesion exists on the surface of the polyether-ether-ketone material, the mechanical properties of the surface of the polyether-ether-ketone material can be influenced, such as the wear resistance and the irradiation resistance, can be greatly influenced.

At present, in the traditional preparation method of the polyetheretherketone material, the superhydrophobic modification is carried out on the material, and the existing superhydrophobic modification concept is that the ether bond in a molecular chain is reduced by reducing the molecular weight of the polyetheretherketone, so that the content of the ether bond in a polymer is reduced overall to weaken the hydrophilicity of the material. For example, CN201911315280.4 discloses a method for preparing low molecular weight polyetheretherketone, which comprises replacing diphenylsulfone as solvent with caproamide, and using 1-naphthol or 2-naphthol as polymer blocking agent to prepare polyetheretherketone with shorter molecular chain length, i.e. polyetheretherketone with lower molecular weight, wherein the weight average molecular weight of the prepared polyetheretherketone with lower molecular weight is 4000-10000, which is reduced by 80-85% compared with the conventional process. Although the hydrophilicity of the material is reduced, the groups of the material still mainly comprise ether bonds, the bonding force with water is still large, and the whole structure of the material is not modified, so that the surface of the material cannot achieve the hydrophobic effect.

Accordingly, there is still a need for advancement and development of the prior art.

Disclosure of Invention

The invention provides a polyether-ether-ketone material and a preparation method thereof aiming at solving the technical problem of poor hydrophobic property of the conventional polyether-ether-ketone material.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the super-hydrophobic polyether-ether-ketone material comprises the following components in percentage by mole:

the super-hydrophobic polyether-ether-ketone material is prepared from the modified SiO₂The granules are prepared by the following steps:

adding ammonia water and silica sol into water, and uniformly mixing to obtain a first mixed solution;

adding a surfactant into the first mixed solution, and uniformly mixing to obtain a second mixed solution;

dropwise adding fluorosilicone into the second mixed solution, and stirring for 12-20 hours to obtain a third mixed solution;

drying the third mixed solution in an oven to obtain the modified SiO₂And (3) granules.

The super-hydrophobic polyether-ether-ketone material is prepared from the modified SiO₂In the preparation process of the particles, according to the mass percentage, the used ammonia water is 3-6%, the used silica sol is 0.5-1%, the used surfactant is 0.5-1%, the used fluorosilicone is 0.5-1.5%, and the used water is 92.5-93.5%.

The super-hydrophobic polyether-ether-ketone material is characterized in that the surfactant is one or more of anionic surfactants such as sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and sodium alkenyl sulfonate, or one or more of nonionic surfactants such as long-chain fatty alcohol-polyoxyethylene ether, alkylphenol ethoxylates, fatty acid-polyoxyethylene ester, polyoxyethylene alkylamine and polyoxyethylene alkylamide.

The super-hydrophobic polyether-ether-ketone material is characterized in that the silica sol is one or more of silica sols with solid content of 10-20%.

The super-hydrophobic polyether-ether-ketone material is prepared from the modified SiO₂The particle size of the particles is 30-40 nm.

In addition, the invention also provides a preparation method of the super-hydrophobic polyetheretherketone material, which is used for preparing the super-hydrophobic polyetheretherketone material, wherein the preparation method comprises the following steps:

adding 4, 4' -difluorobenzophenone and hydroquinone into diphenyl sulfone for mixing, and then heating to 140-160 ℃ under the protection of nitrogen to obtain an intermediate mixed solution;

modifying SiO₂Adding the particles into the intermediate mixed solution, keeping the temperature at 140-160 ℃, and stirring for 0.5-1 h to obtain an intermediate product;

adding alkali carbonate into the intermediate product, and heating to obtain a reaction product;

and crystallizing, separating out, crushing, screening, extracting, washing and filter-pressing the reaction product to obtain the super-hydrophobic polyether-ether-ketone material.

The preparation method of the super-hydrophobic polyether-ether-ketone material comprises the following steps of adding alkali carbonate into the intermediate product, and heating to obtain a reaction product:

adding alkali carbonate into the intermediate product, heating to 200 ℃ within 1h, preserving heat at 200 ℃ for 1h, then heating to 250 ℃ within 1h, preserving heat at 250 ℃ for 0.2-0.5 h, then heating to 300-350 ℃ within 1h, and preserving heat for 2-3 h.

Has the advantages that:

1. the super-hydrophobic polyether-ether-ketone material prepared by the invention can achieve the effects of super-hydrophobicity on the surface and low adhesion;

2. the super-hydrophobic polyether-ether-ketone material prepared by the invention has enhanced surface wear resistance, and can still keep super-hydrophobic and low-adhesion performances after being rubbed by a friction tester;

3. the super-hydrophobic polyether-ether-ketone material prepared by the method has improved surface corrosion resistance, and the surface hydrophobicity and low adhesion performance are not obviously reduced after the material is soaked in acid, alkali and high-concentration salt solution.

Drawings

FIG. 1 is a schematic flow chart of a preparation method of super-hydrophobic polyether-ether-ketone according to the invention;

FIG. 2 is a graph of the static contact angle of the superhydrophobic polyetheretherketone prepared in example 1 in air;

FIG. 3 is an SEM image of a micro surface of the superhydrophobic polyetheretherketone prepared in example 1;

FIG. 4 is a graph of the static contact angle of the superhydrophobic polyetheretherketone surface prepared in example 1 after rubbing for 200 r;

FIG. 5 is an SEM photograph of the super-hydrophobic PEEK prepared in example 1 after being rubbed by a surface for 200 r;

FIG. 6 is a graph of the static contact angle of the superhydrophobic polyetheretherketone surface prepared in example 1 after 24h corrosion with a weak acid;

FIG. 7 is an SEM image of the super-hydrophobic PEEK surface prepared in example 1 after 24h corrosion with a weak acid.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, 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. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. In the present invention, SiO is modified₂The granules are prepared by the following steps:

(1) adding ammonia water and silica sol into water, and uniformly mixing to obtain a first mixed solution;

(2) adding a surfactant into the first mixed solution, and uniformly mixing to obtain a second mixed solution;

(3) dropwise adding fluorosilicone into the second mixed solution, and stirring for 12-20 hours to obtain a third mixed solution;

(4) drying the third mixed solution in an oven to obtain the modified SiO₂And (3) granules. Wherein, according to the mass percentage, the ammonia water is 3-6%, the silica sol is 0.5-1%, the surfactant is 0.5-1%, the fluorosilicone is 0.5-1.5%, and the water is 92.5-93.5%₂The particles are modified by fluorosilicone, and SiO modified by fluorosilicone₂The particles are grafted with fluorocarbon long chains, CF-groups on the fluorocarbon long chains have strong hydrophobic effect, and preferably, the modified SiO₂The particle size of the particles is 30-40 nm.

Further, as shown in fig. 1, the preparation method of the super-hydrophobic polyetheretherketone material of the present invention comprises the steps of:

s10, adding 4, 4' -difluorobenzophenone and hydroquinone into diphenyl sulfone for mixing, and then heating to 140-160 ℃ under the protection of nitrogen to obtain an intermediate mixed solution;

s20, modifying SiO₂Adding the particles into the intermediate mixed solution, keeping the temperature at 140-160 ℃, and stirring for 0.5-1 h to obtain an intermediate product;

s30, adding alkali metal carbonate into the intermediate product, and heating to obtain a reaction product;

s40, crystallizing, separating out, crushing, screening, extracting, washing and filter-pressing the reaction product to obtain the super-hydrophobic polyether-ether-ketone material.

In the invention, modified SiO is added in the preparation process₂Granular, partial SiO₂The particles replace 4, 4' -difluorobenzophenone and hydroquinone to carry out polycondensation reaction, so that the two ends of the polymer are grafted with modified SiO₂Particles due to modified SiO₂The particles are provided with CF-hydrophobic groups, so that the polyether-ether-ketone material with super-hydrophobic surface can be obtained after the reaction product is solidified.

Furthermore, the super-hydrophobic polyether-ether-ketone material prepared by the method can achieve the effects of super-hydrophobicity on the surface and low adhesion. Meanwhile, the modified polyether-ether-ketone surface has enhanced wear resistance, and can still keep super-hydrophobic and low-adhesion performance after being rubbed by a friction tester for 200 r; furthermore, the corrosion resistance of the modified polyetheretherketone surface is also improved, and the surface hydrophobicity and low adhesion performance are still better after the modified polyetheretherketone surface is soaked in acid, alkali and high-concentration salt solution.

The following is a further explanation of the preparation method of the super-hydrophobic polyetheretherketone material of the present invention by specific examples:

example 1

Preparation of modified SiO₂And (3) particle:

weighing 4% of ammonia water, 1% of silica sol, 0.5% of surfactant, 1.5% of fluorosilicone and 93% of water according to mass percentage;

adding ammonia water and silica sol into water, magnetically stirring for 30min at 50 ℃, then adding a surfactant, magnetically stirring for 30min at 50 ℃, dropwise adding fluorosilicone into the solution, magnetically stirring for 12h at 50 ℃ to obtain a prepared solution, finally placing the prepared solution into a drying oven, and drying for 12h at 200 ℃ to obtain modified SiO₂And (3) granules.

Preparation of super-hydrophobic polyether-ether-ketone:

weighing 24 percent of 4, 4' -difluorobenzophenone, 25 percent of hydroquinone, 50 percent of alkali metal carbonate and 1 percent of modified SiO in percentage by mole₂And (3) granules.

Sequentially adding the raw materials into a polymerization reactor with a stirring device, heating to 150 ℃, simultaneously introducing nitrogen, adding modified SiO2 particles, keeping the temperature at 150 ℃, stirring for 30min, then adding alkali carbonate, namely a mixture of anhydrous potassium carbonate and anhydrous sodium carbonate, keeping stirring, heating to 200 ℃ for 1h, keeping the temperature for 1h, continuing heating to 250 ℃ for 1h, keeping the temperature for 15min, finally heating to 320 ℃ for 1h, keeping the temperature for 2.5h, cooling, taking out a reaction product, crystallizing, crushing, screening, extracting, washing, and carrying out pressure filtration to remove impurities such as excessive raw materials and byproducts, thereby finally obtaining the super-hydrophobic polyether-ether-ketone material.

Example 2

Preparation of modified SiO₂And (3) particle:

weighing 6% of ammonia water, 0.5% of silica sol, 0.5% of surfactant, 0.5% of fluorosilicone and 92.5% of water according to mass percentage;

adding ammonia water and silica sol into water, magnetically stirring for 30min at 50 ℃, then adding a surfactant, magnetically stirring for 30min at 50 ℃, dropwise adding fluorosilicone into the solution, magnetically stirring for 12h at 50 ℃ to obtain a prepared solution, finally placing the prepared solution into a drying oven, and drying for 12h at 200 ℃ to obtain modified SiO₂And (3) granules.

Preparation of super-hydrophobic polyether-ether-ketone:

weighing 24 percent of 4, 4' -difluorobenzophenone, 25 percent of hydroquinone, 50 percent of alkali metal carbonate and 1 percent of modified SiO in percentage by mole₂And (3) granules.

Sequentially adding the raw materials into a polymerization reactor with a stirring device, heating to 150 ℃, simultaneously introducing nitrogen, adding modified SiO2 particles, keeping the temperature at 150 ℃, stirring for 30min, then adding alkali carbonate, namely a mixture of anhydrous potassium carbonate and anhydrous sodium carbonate, keeping stirring, heating to 200 ℃ for 1h, keeping the temperature for 1h, continuing heating to 250 ℃ for 1h, keeping the temperature for 15min, finally heating to 320 ℃ for 1h, keeping the temperature for 2.5h, cooling, taking out a reaction product, crystallizing, crushing, screening, extracting, washing, and carrying out pressure filtration to remove impurities such as excessive raw materials and byproducts, thereby finally obtaining the super-hydrophobic polyether-ether-ketone material.

Example 3

Preparation of modified SiO₂And (3) particle:

weighing 3% of ammonia water, 1% of silica sol, 1% of surfactant, 1.5% of fluorosilicone and 93.5% of water according to mass percentage;

adding ammonia water and silica sol into water, magnetically stirring for 30min at 50 ℃, then adding a surfactant, magnetically stirring for 30min at 50 ℃, dropwise adding fluorosilicone into the solution, magnetically stirring for 12h at 50 ℃ to obtain a prepared solution, finally placing the prepared solution into a drying oven, and drying for 12h at 200 ℃ to obtain modified SiO₂And (3) granules.

Preparation of super-hydrophobic polyether-ether-ketone:

weighing according to mol percentage24% of 4, 4' -difluorobenzophenone, 25% of hydroquinone, 50% of alkali metal carbonate and 1% of modified SiO₂And (3) granules.

Sequentially adding the raw materials into a polymerization reactor with a stirring device, heating to 150 ℃, simultaneously introducing nitrogen, adding modified SiO2 particles, keeping the temperature at 150 ℃, stirring for 30min, then adding alkali carbonate, namely a mixture of anhydrous potassium carbonate and anhydrous sodium carbonate, keeping stirring, heating to 200 ℃ for 1h, keeping the temperature for 1h, continuing heating to 250 ℃ for 1h, keeping the temperature for 15min, finally heating to 320 ℃ for 1h, keeping the temperature for 2.5h, cooling, taking out a reaction product, crystallizing, crushing, screening, extracting, washing, and carrying out pressure filtration to remove impurities such as excessive raw materials and byproducts, thereby finally obtaining the super-hydrophobic polyether-ether-ketone material.

Example 4

Preparation of modified SiO₂And (3) particle:

weighing 4% of ammonia water, 1% of silica sol, 0.5% of surfactant, 1.5% of fluorosilicone and 93% of water according to mass percentage;

adding ammonia water and silica sol into water, magnetically stirring for 30min at 50 ℃, then adding a surfactant, magnetically stirring for 30min at 50 ℃, dropwise adding fluorosilicone into the solution, magnetically stirring for 12h at 50 ℃ to obtain a prepared solution, finally placing the prepared solution into a drying oven, and drying for 12h at 200 ℃ to obtain modified SiO₂And (3) granules.

Preparation of super-hydrophobic polyether-ether-ketone:

weighing 24 percent of 4, 4' -difluorobenzophenone, 25 percent of hydroquinone, 50 percent of alkali metal carbonate and 1 percent of modified SiO in percentage by mole₂And (3) granules.

Sequentially adding the raw materials into a polymerization reactor with a stirring device, heating to 150 ℃, simultaneously introducing nitrogen, adding modified SiO2 particles, keeping the temperature at 150 ℃, stirring for 30min, then adding alkali carbonate, namely a mixture of anhydrous potassium carbonate and anhydrous sodium carbonate, keeping stirring, heating to 200 ℃ for 1h, keeping the temperature for 1h, continuing heating to 250 ℃ for 1h, keeping the temperature for 15min, finally heating to 320 ℃ for 1h, keeping the temperature for 2.5h, cooling, taking out a reaction product, crystallizing, crushing, screening, extracting, washing, and carrying out pressure filtration to remove impurities such as excessive raw materials and byproducts, thereby finally obtaining the super-hydrophobic polyether-ether-ketone material.

Example 5

Preparation of modified SiO₂And (3) particle:

weighing 4% of ammonia water, 1% of silica sol, 0.5% of surfactant, 1.5% of fluorosilicone and 93% of water according to mass percentage;

adding ammonia water and silica sol into water, magnetically stirring for 30min at 50 ℃, then adding a surfactant, magnetically stirring for 30min at 50 ℃, dropwise adding fluorosilicone into the solution, magnetically stirring for 12h at 50 ℃ to obtain a prepared solution, finally placing the prepared solution into a drying oven, and drying for 12h at 200 ℃ to obtain modified SiO₂And (3) granules.

Preparation of super-hydrophobic polyether-ether-ketone:

27 percent of 4, 4' -difluorobenzophenone, 27 percent of hydroquinone, 44 percent of alkali metal carbonate and 2 percent of modified SiO are weighed according to the mol percentage₂And (3) granules.

Sequentially adding the raw materials into a polymerization reactor with a stirring device, heating to 150 ℃, simultaneously introducing nitrogen, adding modified SiO2 particles, keeping the temperature at 150 ℃, stirring for 30min, then adding alkali carbonate, namely a mixture of anhydrous potassium carbonate and anhydrous sodium carbonate, keeping stirring, heating to 200 ℃ for 1h, keeping the temperature for 1h, continuing heating to 250 ℃ for 1h, keeping the temperature for 15min, finally heating to 320 ℃ for 1h, keeping the temperature for 2.5h, cooling, taking out a reaction product, crystallizing, crushing, screening, extracting, washing, and carrying out pressure filtration to remove impurities such as excessive raw materials and byproducts, thereby finally obtaining the super-hydrophobic polyether-ether-ketone material.

Example 6

Preparation of modified SiO₂And (3) particle:

weighing 4% of ammonia water, 1% of silica sol, 0.5% of surfactant, 1.5% of fluorosilicone and 93% of water according to mass percentage;

adding ammonia water and silica sol into water, magnetically stirring for 30min at 50 ℃, then adding a surfactant, magnetically stirring for 30min at 50 ℃, dropwise adding fluorosilicone into the solution, magnetically stirring for 12h at 50 ℃ to obtain a prepared solution, finally placing the prepared solution into a drying oven, and drying for 12h at 200 ℃ to obtain modified SiO₂And (3) granules.

Preparation of super-hydrophobic polyether-ether-ketone:

weighing 24 percent of 4, 4' -difluorobenzophenone, 25 percent of hydroquinone, 50 percent of alkali metal carbonate and 1 percent of modified SiO in percentage by mole₂And (3) granules.

Sequentially adding the raw materials into a polymerization reactor with a stirring device, heating to 150 ℃, simultaneously introducing nitrogen, adding modified SiO2 particles, keeping the temperature at 150 ℃, stirring for 30min, then adding alkali carbonate, namely a mixture of anhydrous potassium carbonate and anhydrous sodium carbonate, keeping stirring, heating to 200 ℃ for 1h, keeping the temperature for 1h, continuing heating to 250 ℃ for 1h, keeping the temperature for 15min, finally heating to 320 ℃ for 1h, keeping the temperature for 2.5h, cooling, taking out a reaction product, crystallizing, crushing, screening, extracting, washing, and carrying out pressure filtration to remove impurities such as excessive raw materials and byproducts, thereby finally obtaining the super-hydrophobic polyether-ether-ketone material.

In the present invention, the superhydrophobic properties of the superhydrophobic polyetheretherketone prepared in examples 1 to 6 were analyzed, and the results are shown in the following table:

	WCA/°	SA/°
			example 1	152.7	3.7
Example 2	141.5	9.5
			Example 3	142.8	10.0
Example 4	125.0	17.3
			Example 5	150.3	22.7
Example 6	114.7	35.0

The data of the static contact angle (WCA) and the Sliding Angle (SA) of the superhydrophobic polyether ether ketones prepared in the examples 1 to 6 of the present application in the air are listed in the table, and it can be seen from the data in the table that the superhydrophobic polyether ether ketones prepared in the present application have better hydrophobic properties.

Further, the application analyzes the hydrophobic property of the superhydrophobic polyether ether ketone prepared in the examples 1 to 6 after surface rubbing for 200r, and the results are shown in the following table:

as can be seen from the data in the table, the super-hydrophobic polyetheretherketone prepared by the method still has good hydrophobic property on the surface of the material after the surface is rubbed by 200 r.

Furthermore, in the present invention, for the super-hydrophobic polyether-ether-ketone prepared in examples 1 to 6, the surface thereof was etched with a weak acid, a weak base and a high-concentration salt solution for 24 hours, and then the hydrophobic property of the super-hydrophobic polyether-ether-ketone after etching was analyzed, and the results shown in the following table were obtained:

as can be seen from the data in the table, the super-hydrophobic polyether-ether-ketone prepared by the invention still has better hydrophobic property after 24 hours of corrosion of weak acid, weak base and high-concentration salt solution.

In addition, fig. 2 is a static contact angle diagram of the super-hydrophobic polyetheretherketone prepared in example 1 of the present invention in air, fig. 3 is an SEM diagram of a micro surface of the super-hydrophobic polyetheretherketone prepared in example 1, fig. 4 is a static contact angle diagram of the super-hydrophobic polyetheretherketone prepared in example 1 after being rubbed with 200r, fig. 5 is an SEM diagram of the super-hydrophobic polyetheretherketone prepared in example 1 after being rubbed with 200r, fig. 6 is a static contact angle diagram of the super-hydrophobic polyetheretherketone prepared in example 1 after being corroded with a weak acid for 24h, and fig. 7 is an SEM diagram of the super-hydrophobic polyetheretherketone prepared in example 1 after being corroded with a weak acid for 24 h. Also, as can be seen from fig. 2 to 7, the superhydrophobic polyetheretherketone prepared by the method has better hydrophobic property, and still has better hydrophobic property under the condition that the surface is rubbed and corroded.

Therefore, the super-hydrophobic polyetheretherketone prepared by the method can overcome the problem of large adhesion between the surface of the conventional polyetheretherketone material and water and aqueous solutions, and simultaneously enhances the wear resistance and corrosion resistance of the surface of the polyetheretherketone material, thereby improving the application value of the polyetheretherketone material in the fields of aerospace, medical instruments and the like.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.