Polyether ether ketone-based high-temperature-resistant composite material and preparation method and application thereof

Abstract

The present application relates to polyether ether ketone composite material technical field, disclose a kind of polyether ether ketone-based high temperature resistant composite material and its preparation method and application.Polyether ether ketone-based high temperature resistant composite material, raw material is by weight parts, including:polyether ether ketone 48~66 parts, modified polyarylate ether ketone 10~20 parts, composite filler 24~32 parts;The composite filler includes carbon fiber and poly-p-phenylene benzobisoxazole fiber.Preparation method: the formula amount of modified polyarylate ether ketone is dissolved in dipolar aprotic solvent, formula amount of carbon fiber is added and soaked, after removing solvent, get the sample of sizing;Formula amount of polyether ether ketone, prepared sizing sample and poly-p-phenylene benzobisoxazole fiber are mixed uniformly after heat pressing molding, obtain polyether ether ketone-based high temperature resistant composite material.The modified polyarylate ether ketone is applied to military, energy power, ship and submarine field.The polyether ether ketone-based high temperature resistant composite material provided by the present application improves the interfacial properties of polyether ether ketone and poly-p-phenylene benzobisoxazole fiber, polyether ether ketone and carbon fiber, thereby improving the tensile strength and bending strength of polyether ether ketone-based high temperature resistant composite material.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of polyether ether ketone composite materials, and particularly relates to a polyether ether ketone-based high-temperature-resistant composite material and a preparation method and application thereof. BACKGROUND

[0002] Polyether ether ketone (PEEK) is a high-performance thermoplastic engineering plastic. Polyether ether ketone gradually becomes an ideal choice for replacing metals and other traditional materials due to its excellent comprehensive performance and can provide stable and reliable performance in many harsh application environments. The modification of polyether ether ketone itself as a sizing agent enables it to fully exert its performance and advantages. Polyether ether ketone composite materials are usually obtained by mixing polyether ether ketone with fillers. Common fillers include carbon fibers and poly-p-phenylene benzobisoxazole fibers. The surface of carbon fibers is usually smooth and chemically inert, which makes the adhesion between the carbon fibers and polyether ether ketone poor, resulting in insufficient interfacial strength and easy debonding and damage during use, which directly affects the mechanical properties, durability and thermal properties of the composite material. Poly-p-phenylene benzobisoxazole (PBO) fibers are considered to be super fibers in the 21st century due to their special advantages in specific strength, specific modulus, heat resistance and flame resistance. However, the regular and ordered orientation structure of PBO fibers leads to a very smooth surface, and most of the polar heteroatoms on the molecular chain are wrapped inside the fiber, so the fiber surface has little polarity, which makes the fiber difficult to be infiltrated by resin, resulting in poor interfacial adhesion between PBO fibers and polyether ether ketone, and poor mechanical properties of the composite material. Therefore, there is an urgent need to develop a polyether ether ketone-based high-temperature-resistant composite material with good mechanical properties. SUMMARY

[0003] The application provides a polyether ether ketone-based high-temperature-resistant composite material and a preparation method and application thereof, and solves the problem of poor mechanical properties of the polyether ether ketone-based composite material prepared by the prior art.

[0004] The first aspect of the application provides a polyether ether ketone-based high-temperature-resistant composite material, and the raw materials thereof include, by weight fraction:

[0005] 48-66 parts of polyether ether ketone, 10-20 parts of modified polyaryletherketone, and 24-32 parts of composite filler;

[0006] The composite filler includes carbon fibers and poly-p-phenylene benzobisoxazole fibers ；

[0007] The structural formula of the modified polyaryletherketone is as follows:

[0008]

[0009] wherein the value range of n is 1-40% (m+n), and the value range of m is 60-99% (m+n).

[0010] Preferably, the mass ratio of the carbon fiber and the poly-p-phenylene benzobisoxazole fiber is 5-10:10-30. The type and content of the filler component make the composite material exhibit anisotropy, and the carbon fiber can improve the strength and the PBO fiber can improve the bending performance in the range.

[0011] The second object of the present application is to protect the preparation method of the polyether ether ketone-based high-temperature-resistant composite material, comprising:

[0012] Dissolving the modified polyaryletherketone in a formula amount in a dipolar aprotic solvent, adding a formula amount of carbon fiber and soaking, and removing the solvent to obtain a sized sample;

[0013] Mixing the polyether ether ketone, the prepared sized sample and the poly-p-phenylene benzobisoxazole fiber in a formula amount uniformly and hot-pressing to form a polyether ether ketone-based high-temperature-resistant composite material.

[0014] The present application uses a dipolar aprotic solvent to provide a sufficient polar environment for the reaction, so that the polar groups such as carbonyl and ether bond in the polyether ether ketone molecular chain can be fully unfolded and dissolved, and it is not easy to give protons to the reactants, avoiding protonation reaction.

[0015] After adding the carbon fiber, the present application first soaks to improve the hand feeling, enhance the bonding ability of the carbon fiber and the matrix resin, protect the fiber and improve the interfacial properties of the composite material.

[0016] Preferably, the dipolar aprotic solvent is N-methylpyrrolidone or N,N-dimethylformamide.

[0017] Preferably, the poly-p-phenylene benzobisoxazole fiber is activated before use.

[0018] Preferably, the activation method of the poly-p-phenylene benzobisoxazole fiber is:

[0019] The poly-p-phenylene benzobisoxazole fiber is surface-activated by plasma at a power of 240-260 W, a pressure of 25-35 Pa and a treatment time of 15-20 min.

[0020] Preferably, the process conditions of the hot-pressing are:

[0021] Under vacuum conditions, at 360-400℃, 2-5MPa, holding for 15-17min.

[0022] The hot-pressing forming in a vacuum environment can greatly reduce the bubble content in the resin, thereby improving the smoothness of the surface of the test piece and the performance of the product. At high temperature, the plasticity of the material increases, plastic deformation can occur between the particles, when the pressure is applied, the contact area between the particles increases, the particles are plastically deformed, new bonding surfaces are formed, thereby increasing the bonding strength of the material. By using the hot-pressing forming method, a regular and uniform micro-nano structure can be constructed on the surface of the PEEK material, and the morphology, size and porosity of the micro-nano structure of the PEEK material interface can be controlled and adjusted.

[0023] Preferably, the solvent is removed by using a stepwise heating method.

[0024] Preferably, the stepwise heating method is as follows:

[0025] First, set the temperature to 60 DEG C and keep it for 2 hours to ensure that the solvent in the sized sample starts to gradually volatilize;

[0026] Then, the stepwise heating is carried out by increasing the temperature by 40 DEG C each time, and keeping it for 2 hours after each increase of 40 DEG C; this stepwise heating mode is helpful for uniform volatilization of the solvent and avoids the formation of bubbles caused by local overheating;

[0027] After reaching 240 DEG C, keep it for 4 hours to remove the solvent completely.

[0028] The stepwise heating method ensures that the reaction proceeds uniformly. By setting multiple preset temperature points and gradually increasing the temperature to the final reaction temperature, the reaction process can be effectively controlled, thereby improving the quality and performance of the final product.

[0029] The third object of the present application is to protect the application of the modified polyaryletherketone in the fields of military industry, energy and power, ships and submarines.

[0030] Compared with the prior art, the present application has the following beneficial effects:

[0031] 1.The polyether ether ketone-based high-temperature-resistant composite material provided by the present application is prepared by compounding polyether ether ketone, modified polyaryletherketone, carbon fiber and poly-p-phenylene-benzobisoxazole fiber, which can greatly enhance the interfacial adhesion between carbon fiber and PEEK, improve the interfacial properties of polyether ether ketone and poly-p-phenylene-benzobisoxazole fiber and the interfacial properties of polyether ether ketone and carbon fiber, thereby improving the tensile strength, bending strength and high-temperature resistance of the polyether ether ketone-based high-temperature-resistant composite material. The raw material polyether ether ketone is a high-performance thermoplastic resin, which is compounded with poly-p-phenylene-benzobisoxazole fiber and carbon fiber to improve the performance. However, the interfacial adhesion between polyether ether ketone and poly-p-phenylene-benzobisoxazole fiber and the interfacial adhesion between polyether ether ketone and carbon fiber is very poor. Therefore, the present application uses fluorinated polyaryletherketone to prepare a sized sample, which enhances the interfacial properties between carbon fiber and the polyether ether ketone matrix under the action of non-covalent bonds (π-π conjugation and hydrogen bonding), improves the interfacial strength and the interfacial adhesion strength between the raw materials. After the activation of PBO fiber, the oxygen content and the content of functional groups on the surface are increased, such as the content of -O-C=O and -C-O groups. The increase of these functional groups helps to improve the polarity and hydrophilicity of the surface of PBO fiber, thereby enhancing the binding capacity of the sized sample; and a large number of unevenness and gullies are generated on the surface of PBO fiber, thereby increasing the surface roughness, providing more contact points, increasing the interfacial area between the fiber and the sized sample, and thereby improving the binding strength. Therefore, the sized sample acts on polyether ether ketone, poly-p-phenylene-benzobisoxazole fiber and carbon fiber at the same time, thereby improving the high-temperature resistance, tensile strength and bending strength of the polyether ether ketone-based high-temperature-resistant composite material.

[0032] 2.The present application provides a preparation method of a polyether ether ketone-based high-temperature-resistant composite material, which first compounding modified polyaryletherketone with carbon fiber, and then mixing PBO fiber, so as to ensure that the two kinds of fibers can play the maximum role in the composite material. Carbon fiber provides high strength and high modulus, while PBO fiber provides excellent heat resistance and chemical corrosion resistance. By first treating the interface between carbon fiber and polyaryletherketone, and then mixing the plasma-activated PBO fiber, it can ensure that the two kinds of fibers are uniformly distributed in the composite material, and their respective advantages can be fully exerted. The polyether ether ketone-based high-temperature-resistant composite material prepared by the method provided by the present application has good improvement in the interfacial problem, and on the basis of maintaining the original excellent performance characteristics such as high-temperature resistance, chemical corrosion resistance, high mechanical strength and good wear resistance, it can also effectively improve the high-temperature resistance, and the practical value is more significant. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 TGA test graph of the polyether ether ketone-based high-temperature-resistant composite material provided by Example 1 of the present application and the polyether ether ketone-based high-temperature-resistant composite material provided by Comparative Example 1. DETAILED DESCRIPTION

[0034] The technical solutions in the present application will be described clearly and completely below in combination with the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0035] The methods described in the embodiments of the present application are all conventional methods unless otherwise specified. The materials, reagents, etc. used are all available from commercial channels unless otherwise specified.

[0036] In the following description of the present embodiment, the term "and / or" is used to describe the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the cases of A alone, B alone and A and B existing at the same time. Wherein, A and B can be singular or plural; the single symbol " / " represents the meaning of "or".

[0037] In the following description of the present embodiment, the term "at least one" means one or more, and "a plurality of" means two or more. "At least one of the following" or similar expressions means any combination of these items, including any combination of single item or multiple items. For example, "at least one of A, B or C", or "at least one of A, B and C", can represent any one of A, B, C, A+B, A+C, B+C, or A+B+C, wherein A, B, C can be single or multiple.

[0038] In the following description of the present embodiment, the order of serial numbers does not mean the order of execution, and some or all steps can be executed in parallel or in sequence. The execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the present embodiment.

[0039] In the following description of the present embodiment, the numerical range should be understood as also specifically disclosing each intermediate value between the upper limit and the lower limit of the range. Each smaller range between any stated value or intermediate value in the stated range and any other stated value or intermediate value in the stated range is also included in the present embodiment, and the upper limit and the lower limit of the smaller range can be independently included or excluded from the range.

[0040] Unless otherwise indicated, the technical / scientific terms used in the present embodiments have the same meaning as commonly understood by a person of ordinary skill in the art to which the present application belongs. Although the present application only describes the preferred methods and materials, any methods and materials similar or equivalent to those described herein can also be used in the present application. All documents mentioned in the present specification are incorporated by reference to disclose and describe the methods and / or materials related to the documents. In the event of any conflict between the present specification and any incorporated document, the content of the present specification shall prevail.

[0041] Abbreviations of some substances in the present embodiments and comparative examples:

[0042] Fluorinated polyaryletherketone: FPAEK, poly-p-phenylene benzobisoxazole fiber: PBO.

[0043] The preparation method of the fluorinated polyaryletherketone in the present embodiments is as follows:

[0044] Under the nitrogen flow rate of 70 ml / min, a container equipped with mechanical stirring, thermometer, condenser and Dean-Stark trap was sequentially added with decafluorobiphenyl ketone (0.02 mol), 4-4'-difluorobenzophenone (0.08 mol), biphenyl diol (0.11 mol) as raw materials, followed by the addition of anhydrous cesium carbonate (0.12 mol) as catalyst, sulfolane (15 ml) as solvent, and toluene (10 ml) as water-carrying agent. The system was raised to 140°C to azeotropically form salt, and kept at this temperature for 3 h to remove the water in the system; the temperature was continuously raised to 165°C to remove toluene; the temperature was further raised to 190°C, and kept at this temperature for 4 h. After high-temperature polymerization, the product was collected and cooled in deionized water, then the product was crushed and washed with deionized water and ethanol for 6 times to remove sulfolane and inorganic salts, and then filtered. The product was dried in a temperature-controlled drying oven at 70°C for 8 h, and then placed in a vacuum drying oven at 65°C for 20 h to obtain white fluorine-containing polyaryletherketone.

[0045] Example 1

[0046] A polyether ether ketone-based high-temperature-resistant composite material, the raw materials of which include, by weight:

[0047] 48 parts of polyether ether ketone, 20 parts of modified polyaryletherketone, and 32 parts of composite filler;

[0048] The composite filler includes carbon fibers and poly-p-phenylene benzobisoxazole fibers in a mass ratio of 7:25 ；

[0049] The structural formula of the modified polyaryletherketone is as follows:

[0050]

[0051] Wherein, n is in the range of 1-40% (m+n), m is in the range of 60-99% (m+n).

[0052] A preparation method of a polyether ether ketone-based high-temperature-resistant composite material, comprising:

[0053] (1) Prepare the sizing sample: dissolve the formula amount of fluorinated polyaryletherketone in the dipole aprotic solvent N-methylpyrrolidone under the condition of magnetic stirring to obtain a fluorinated polyaryletherketone solution. Remove the stabilizer on the surface of the carbon fiber using acetone, then immerse the formula amount of the carbon fiber with the stabilizer removed into the fluorinated polyaryletherketone solution and mix uniformly, after soaking for 15 minutes, remove the solvent by using the stepwise heating method, and after drying at 140℃, the sizing sample can be prepared, which is marked as CF@FPAEK.

[0054] (2) In nitrogen, use plasma to activate the surface of the formula amount of poly-p-phenylene benzobisoxazole fiber, the treatment power is 250W, the treatment pressure is 30Pa, and the treatment time is 15min, so that the surface has active functional groups, and functionalized poly-p-phenylene benzobisoxazole fiber is obtained, which is marked as PBO-NH2.

[0055] (3) Put the formula amount of polyether ether ketone, the prepared CF@FPAEK and PBO-NH2 into acetone and ultrasonic treat for 2h, so that they are mixed uniformly, then filter and wash with deionized water, and after drying the obtained sample at 270℃ for 3h, press by using the hot pressing method at a temperature of 375℃, and the holding time and pressure are 2MPa for 15min, to obtain a polyether ether ketone-based high-temperature-resistant composite material.

[0056] Example 2

[0057] A polyether ether ketone-based high-temperature-resistant composite material, the raw materials of which include, by weight parts:

[0058] Polyether ether ketone 57 parts, modified polyaryletherketone 15 parts, and composite filler 28 parts.

[0059] The composite filler includes carbon fiber and poly-p-phenylene benzobisoxazole fiber with a mass ratio of 8:20. ；

[0060] The structural formula of the modified polyaryletherketone is as follows:

[0061]

[0062] Wherein, n is in the range of 1-40% (m+n), m is in the range of 60-99% (m+n).

[0063] A preparation method of a polyether ether ketone-based high-temperature-resistant composite material, comprising:

[0064] (1) Preparation of sizing sample: dissolve the formula amount of fluorinated polyaryletherketone in the dipolar aprotic solvent N,N-dimethylformamide under the condition of magnetic stirring to obtain a fluorinated polyaryletherketone solution. Remove the stabilizer on the surface of the carbon fiber using acetone, then immerse the formula amount of carbon fiber with the stabilizer removed into the fluorinated polyaryletherketone solution and mix well, after 20 min of soaking, remove the solvent using the stepwise heating method, and after drying at 140℃, the sizing sample can be prepared, which is marked as CF@FPAEK.

[0065] (2) Surface activation of the formula amount of poly-p-phenylene benzobisoxazole fiber using plasma in normal pressure air, treatment power 250W, treatment pressure 30Pa, treatment time 15min, so that the surface has active functional groups, obtaining functionalized poly-p-phenylene benzobisoxazole fiber, marked as PBO-COOH.

[0066] (3) Put the formula amount of polyether ether ketone, CF@FPAEK and PBO-COOH prepared into acetone and stir for 2h to make them mix well, then filter and wash with deionized water, and then dry the obtained sample at 270℃ for 3h, and then press using hot pressing method at a temperature of 365℃, holding time 3MPa for 16min, obtaining polyether ether ketone-based high-temperature-resistant composite material.

[0067] Example 3

[0068] A polyether ether ketone-based high-temperature-resistant composite material, the raw materials of which include, by weight:

[0069] 66 parts of polyether ether ketone, 10 parts of modified polyaryletherketone, and 24 parts of composite filler;

[0070] The composite filler includes carbon fiber and poly-p-phenylene benzobisoxazole fiber in a mass ratio of 9:15 ；

[0071] The structural formula of the modified polyaryletherketone is as follows:

[0072]

[0073] Wherein, the value range of n is 1-40%(m+n), and the value range of m is 60-99%(m+n).

[0074] A preparation method of a polyether ether ketone-based high-temperature-resistant composite material, comprising:

[0075] (1) Preparation of the sizing sample: dissolve the formula amount of fluorinated polyaryletherketone in the dipolar aprotic solvent N,N-dimethylformamide under the condition of magnetic stirring to obtain a fluorinated polyaryletherketone solution. Remove the stabilizer on the surface of the carbon fiber using acetone, then immerse the formula amount of the carbon fiber from which the stabilizer has been removed in the fluorinated polyaryletherketone solution and mix well, soak for 30 min, and then remove the solvent using the stepwise heating method, and dry at 140℃ to obtain the sizing sample, which is marked as CF@FPAEK.

[0076] (2) Surface activation of the formula amount of poly-p-phenylene benzobisoxazole fiber in oxygen using plasma, with a treatment power of 250W, a treatment pressure of 30Pa, and a treatment time of 15min, so that the surface has active functional groups, and functionalized poly-p-phenylene benzobisoxazole fiber PBO-OH is obtained.

[0077] (3) Put the formula amount of polyether ether ketone matrix, CF@FPAEK and PBO-OH obtained in acetone and ultrasonically treat for 2h to make them uniformly mixed, then filter and wash with deionized water, dry the obtained sample at 270℃ for 3h, and then press using the hot pressing method at a temperature of 380℃, with a holding pressure time of 5MPa for 17min, to obtain a polyether ether ketone-based high-temperature-resistant composite material.

[0078] Comparative Example 1

[0079] Prepare a polyether ether ketone-based high-temperature-resistant composite material according to the method of Example 1, except that no modified polyaryletherketone is added to the sizing sample obtained in this comparative example.

[0080] A polyether ether ketone-based high-temperature-resistant composite material, the raw materials of which comprise, by weight:

[0081] 32 parts of composite filler, 48 parts of polyether ether ketone;

[0082] The composite filler comprises carbon fiber and poly-p-phenylene benzobisoxazole fiber in a mass ratio of 7:25.

[0083] A method for preparing a polyether ether ketone-based high-temperature-resistant composite material, comprising:

[0084] (1) Preparation of the sizing sample: remove the stabilizer on the surface of the carbon fiber using acetone, then immerse the formula amount of the carbon fiber from which the stabilizer has been removed in the fluorinated polyaryletherketone solution and mix well, soak for a period of time, and then remove the solvent using the stepwise heating method, and dry to obtain the sizing sample, which is marked as CF@FPAEK.

[0085] (2) In nitrogen, the surface of the formula amount of poly-p-phenylene benzobisoxazole fiber is activated by plasma, the treatment power is 250 W, the treatment pressure is 30 Pa, and the treatment time is 15 min, so that the surface has active functional groups, and functional poly-p-phenylene benzobisoxazole fiber is obtained, which is marked as PBO-NH2.

[0086] (3) The formula amount of polyether ether ketone, CF@FPAEK and PBO-NH2 are put into acetone for ultrasonic treatment for 2 h, so that they are uniformly mixed, then deionized water is filtered, and the obtained sample is dried at 270 DEG C for 3 h, then hot pressing is carried out at a temperature of 375 DEG C, and the holding pressure time is 3 MPa for 15 min, so that the polyether ether ketone-based high-temperature-resistant composite material is obtained.

[0087] Performance test

[0088] 1. Mechanical properties

[0089] The instrument used for testing the performance of the application is Shimadzau-I type experimental machine of Japan.

[0090] Tensile properties: Install the sample on the experimental machine, ensure that the sample length direction is parallel to the fixture axis, and keep the sample straight. Start the tensile test, record the maximum load generated by the sample during the tensile process and the sample width. Stop the test when the sample breaks, and read the tensile strength value.

[0091] Bending strength: according to the situation of the sample, select the appropriate bending fixture and install it on the test machine. Check whether the fixture is installed correctly and set the span. Preheat the test machine: turn on the test machine and preheat it, usually 15 minutes are needed to ensure that the equipment reaches a stable state. Apply bending load: place the sample symmetrically on the two supports, and apply a vertical force through the pressure head to generate the maximum bending stress. This process will record the stress and strain data of the sample at different bending angles.

[0092] Table 1 Mechanical properties of samples prepared in examples and comparative examples

[0093]

[0094]

[0095] As can be seen from table 1, compared with comparative example 1, the tensile strength and bending strength of the polyether ether ketone-based high-temperature-resistant composite material prepared in examples 1-3 are higher, which indicates that after the addition of fluorinated polyaryletherketone, the interfacial adhesion of the polyether ether ketone-based high-temperature-resistant composite material can be obviously improved, so that the tensile strength and bending strength of the polyether ether ketone-based high-temperature-resistant composite material are improved.

[0096] 2. Thermogravimetric analysis

[0097] The heat resistance of the polyether ether ketone-based high-temperature resistant composite material prepared in Example 2 and Example 3 is basically the same as that of the polyether ether ketone-based high-temperature resistant composite material prepared in Example 1. The following takes the polyether ether ketone-based high-temperature resistant composite material prepared in Example 1 as an example for testing.

[0098] The polyether ether ketone-based high-temperature resistant composite material prepared in Example 1 is heated to 100°C at a rate of 10°C / min under N2protection at room temperature, and then heated to 800°C at a rate of 10°C / min from 100°C.

[0099] Figure 1 The TGA test graph of the polyether ether ketone-based high-temperature resistant composite material provided in Example 1 and the polyether ether ketone-based high-temperature resistant composite material provided in Comparative Example 1. It can be seen that the mass of both does not change significantly before 420°C, and the mass fraction of the polyether ether ketone-based high-temperature resistant composite material of Comparative Example 1 suddenly decreases after 420°C, which is much greater than the decrease of the mass fraction of the polyether ether ketone-based high-temperature resistant composite material of Example 1; when the temperature reaches 750°C, the mass fraction of Comparative Example 1 and Example 1 both decreases to about 75%. This shows that the high-temperature resistance of the polyether ether ketone-based high-temperature resistant composite material of Example 1 is much higher than that of Comparative Example 1. Figure 1

[0100] Although preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0101] Obviously, various modifications and changes can be made to the present application by those skilled in the art without departing from the spirit and scope of the present application. Thus, it is intended that the present application embrace all such modifications and changes that fall within the scope of the appended claims and their equivalents.​

Claims

1. A polyether ether ketone-based high temperature resistant composite material, characterized in that, The raw materials include, by weight parts: 48-66 parts of polyether ether ketone, 10-20 parts of modified polyaryletherketone, 24-32 parts of composite filler; The composite filler includes carbon fiber and poly-p-phenylene benzobisoxazole fiber; The structural formula of the modified polyaryletherketone is as follows: wherein, the value range of n is 1-40% (m+n), and the value range of m is 60-99% (m+n).

2. The polyetheretherketone-based high temperature resistant composite material of claim 1, wherein, The mass ratio of the carbon fiber and the poly-p-phenylene benzobisoxazole fiber is 5-10:10-30.

3. A method of producing the polyether ether ketone-based high-temperature-resistant composite material according to claim 1 or 2, characterized by, It includes: Dissolving the formula amount of modified polyaryletherketone in a dipolar aprotic solvent, adding the formula amount of carbon fiber and soaking, and removing the solvent to obtain a sized sample; Mixing the formula amount of polyether ether ketone, the sized sample and poly-p-phenylene benzobisoxazole fiber uniformly and hot-pressing to form a polyether ether ketone-based high-temperature-resistant composite material.

4. The method for preparing the polyetheretherketone-based high-temperature resistant composite material according to claim 3, characterized in that, The dipolar aprotic solvent is N-methylpyrrolidone or N,N-dimethylformamide.

5. The method for preparing the polyetheretherketone-based high-temperature resistant composite material according to claim 3, characterized in that, The poly-p-phenylene benzobisoxazole fiber is activated before use.

6. The method for preparing the polyetheretherketone-based high-temperature resistant composite material according to claim 3, characterized in that, The poly-p-phenylene benzobisoxazole fiber is activated by the following method: The poly-p-phenylene benzobisoxazole fiber is surface-activated by plasma at a power of 240-260 W and a pressure of 25-35 Pa for 15-20 min.

7. The method for preparing the polyetheretherketone-based high-temperature resistant composite material according to claim 3, characterized in that, The process conditions of the hot-pressing are as follows: Under vacuum, at 360-400℃, 2-5 MPa, holding for 15-17 min.

8. The method for preparing the polyetheretherketone-based high-temperature resistant composite material according to claim 3, characterized in that, The solvent is removed by the stepwise heating method.

9. The method for preparing the polyetheretherketone-based high-temperature resistant composite material according to claim 8, characterized in that, The stepwise heating method is as follows: First, set the temperature to 60℃ and keep for 2 h; Then, perform stepwise heating by increasing the temperature by 40℃ each time, and keep for 2 h after each increase of 40℃; After reaching 240℃, keep for 4 h to remove the solvent.

10. The polyether ether ketone-based high-temperature-resistant composite material of claim 1 is applied in the fields of military industry, energy and power, ships and submarines.

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