Basalt high-performance fiber composite material and manufacturing method thereof

Abstract

The invention relates to a basalt high-performance fiber composite material and a manufacturing method thereof.The composite material is obtained by treating, cooling and curing basalt fibers, specifically, the basalt fibers are grafted with boron nitride and multi-walled carbon nanotubes and then treated with a resin material, and then various properties of the fibers are improved; the fiber composite material is prepared from the following components in parts by weight: 5-10 parts of basalt fiber, 77-94 parts of boron nitride, 68-75 parts of multiwalled carbon nanotubes and 87-105 parts of maleic anhydride polybutadiene resin. According to the manufacturing method of the basalt high-performance fiber composite material, the basalt fiber composite material manufactured by the method is excellent in tensile property, impact resistance, wear resistance and the like.

Description

Technical Field

[0001] The invention relates to the field of basalt fiber manufacturing, and in particular to a basalt high-performance fiber composite material and a manufacturing method thereof. Background Art

[0002] Basalt fiber is made of natural basalt rock, which is melted at a high temperature of 1450-1500℃ and drawn at high speed through a platinum-rhodium alloy drawing plate. It is usually brown and has a metallic luster. It has excellent mechanical properties, acid and alkali corrosion resistance, high temperature resistance and insulation properties.

[0003] In the current prior art, there is a method for preparing basalt fiber, such as the application number 201711456642.2, which is called a basalt fiber with high temperature resistance. In its preparation, the toughness of the basalt fiber can be improved by modifying the basalt ore. Specifically, when stretched, the treated basalt fiber molecules can be arranged in order under the action of stress, thereby effectively improving the tensile strength of the basalt fiber. Compared with ordinary basalt fibers, the basalt fiber prepared in this scheme has greatly improved softness and significantly improved temperature resistance, which significantly enhances the adaptability of the basalt fiber to high temperatures. However, in the production of the above-mentioned basalt fiber, the basalt ore raw materials are mainly improved. In addition, in some other prior arts, the improvement of basalt fiber composite materials is more about the improvement of other resin substances, so that the basalt fiber has certain characteristics, rather than improving the characteristics of the basalt fiber itself, so it does not have obvious advantages.

[0004] In view of the above problems, this application aims to improve the basalt fiber product itself, develop a basalt fiber high-performance composite material, and achieve the goals of significantly enhancing the mechanics and toughness of basalt fiber. Summary of the invention

[0005] In view of the above problems, the present invention provides a method for manufacturing a basalt high-performance fiber composite material. The basalt fiber composite material manufactured by the method has excellent performance in tensile properties, impact resistance, wear resistance and other aspects.

[0006] In order to achieve the above-mentioned purpose, the basalt high-performance fiber composite material of the present invention is obtained by processing, cooling and shaping basalt fibers. The fiber composite material is made of the following components by weight: 5 to 10 parts of basalt fibers, 77 to 94 parts of boron nitride, 68 to 75 parts of multi-walled carbon nanotubes and 87 to 105 parts of maleic anhydride polybutadiene resin.

[0007] In addition, the present invention also provides a method for manufacturing a basalt high-performance fiber composite material, comprising the following steps:

[0008] Step S1: using an ultrasonic water washing method to clean the basalt fiber, and then grafting boron nitride on the cleaned basalt fiber to complete pretreatment to improve the surface roughness of the basalt fiber;

[0009] Step S2: preparing a hydrogen fluoride acid solution, and immersing the basalt fiber in the acid solution to complete the acidification treatment of the basalt fiber surface;

[0010] Step S3: performing oxidation treatment on the multi-walled carbon nanotubes: preparing a nitric acid solution and a sulfuric acid solution, placing the multi-walled carbon nanotubes in a mixed solution of the nitric acid solution and the sulfuric acid solution for reaction, and obtaining carboxylated multi-walled carbon nanotubes;

[0011] Step S4: dissolving the carboxylated multi-walled carbon nanotubes in an ethanol solution, stirring to form a dispersion, placing the basalt fibers obtained in step S2 in the dispersion to perform a grafting reaction;

[0012] Step S5: prepare maleic anhydride polybutadiene resin, heat the maleic anhydride polybutadiene resin to a molten state, immerse the basalt fiber grafted with boron nitride and multi-walled carbon nanotubes respectively in the maleic anhydride polybutadiene resin, perform ultrasonic treatment to allow the resin to fully penetrate into the interior of the basalt fiber, and then heat, cure, cool and shape to obtain a high-performance basalt fiber composite material.

[0013] Furthermore, the method further comprises the following steps:

[0014] Step S6: Weaving the basalt fibers in step S5 alternately in the horizontal and vertical directions to form a basalt base cloth;

[0015] Step S7: preparing a composite material, wherein the composite material is prepared from the following components in parts by weight: 15 to 35 parts of epoxy resin, 8 to 15 parts of silicone resin, 10 to 25 parts of polyurethane resin, 2 to 5 parts of plasticizer, 2 to 3 parts of curing agent and 5 to 10 parts of EPDM rubber;

[0016] Step S8: coating the composite material on the surface of the basalt base cloth, and drying and curing the composite material.

[0017] Furthermore, the step of grafting boron nitride onto the surface of the basalt fiber in S1 includes the following sub-steps:

[0018] Step S11: firstly prepare a dilute hydrochloric acid solution to acid wash the basalt fiber;

[0019] Step S12: Then prepare a boron nitride suspension by mixing boron nitride powder with an isopropanol solution, adding sodium lauryl sulfate and polyvinyl pyrrolidone, and mixing after ultrasonic treatment;

[0020] Step S13: placing the acid-washed basalt fiber in the boron nitride suspension and stirring to obtain the basalt fiber grafted with boron nitride.

[0021] Furthermore, the concentration of the dilute hydrochloric acid solution is 0.8 mol / L, and the mixing mass ratio of the boron nitride powder and the isopropanol solution is 3:1.

[0022] Furthermore, in step S2, the concentration of the hydrogen fluoride acid solution is 10 mol / L, and the basalt fiber is immersed in the acid solution for 1 hour.

[0023] Furthermore, in step S3, the multi-walled carbon nanotubes are first placed in a nitric acid solution and ultrasonically vibrated for 40 minutes, and then a sulfuric acid solution is added to the mixed solution, and the mixture is stirred at 110-150° C. for 10-24 hours and then filtered. The above steps are repeated 2-4 times until the filtrate is neutral.

[0024] Furthermore, in step S4, the mass ratio of the carboxylated multi-walled carbon nanotubes to the ethanol solution is 1:12.

[0025] Through the above technical scheme, in the basalt high-performance fiber composite material of the present invention, the basalt fiber is grafted with boron nitride to improve the roughness of the fiber surface, and then grafted with multi-walled carbon nanotubes, which can improve various properties of the basalt fiber. At the same time, the two grafting steps make the basalt fiber acidic, and finally coated with maleic anhydride polybutadiene resin. The acidic basalt fiber can improve the bonding strength with the maleic anhydride polybutadiene resin. The basalt fiber composite material finally obtained has strong tensile properties, impact resistance and wear resistance. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiment of the present invention is described clearly and completely below in conjunction with the accompanying drawings in the embodiment of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0027] Example 1

[0028] This embodiment provides a method for manufacturing a basalt high-performance fiber composite material, comprising the following steps:

[0029] S1: The basalt fiber is cleaned by ultrasonic washing method, and then the cleaned basalt fiber is grafted with boron nitride to complete pretreatment to improve the surface roughness of the basalt fiber. Specifically:

[0030] S11: firstly prepare a dilute hydrochloric acid solution to acid wash the basalt fiber, wherein the concentration of the dilute hydrochloric acid solution is 0.8 mol / L;

[0031] S12: Then, a boron nitride suspension is prepared by mixing boron nitride powder with an isopropanol solution in a mass ratio of 3:1, and sodium lauryl sulfate and polyvinyl pyrrolidone are added, and the mixture is prepared by ultrasonic treatment and mixing;

[0032] S13: placing the acid-washed basalt fiber in the boron nitride suspension and stirring to obtain the basalt fiber grafted with boron nitride;

[0033] S2: preparing a hydrogen fluoride acid solution, and immersing the basalt fiber in the acid solution to complete the surface acidification treatment of the basalt fiber, wherein the concentration of the hydrogen fluoride acid solution is 10 mol / L, and the basalt fiber is immersed in the acid solution for 1 hour;

[0034] S3: performing oxidation treatment on the multi-walled carbon nanotubes: preparing a nitric acid solution and a sulfuric acid solution, first placing the multi-walled carbon nanotubes in the nitric acid solution and ultrasonically shaking for 40 minutes, then adding the sulfuric acid solution to the mixed solution, stirring at 150° C. for 10 hours and then filtering, repeating the above steps 3 times until the filtrate is neutral, thereby obtaining carboxylated multi-walled carbon nanotubes;

[0035] S4: dissolving the carboxylated multi-walled carbon nanotubes in an ethanol solution, wherein the mass ratio of the carboxylated multi-walled carbon nanotubes to the ethanol solution is 1:12, stirring to form a dispersion, and placing the basalt fibers obtained in step S2 in the dispersion to perform a grafting reaction;

[0036] S5: preparing maleic anhydride polybutadiene resin, heating the maleic anhydride polybutadiene resin to a molten state, immersing the basalt fiber grafted with boron nitride and multi-walled carbon nanotubes respectively into the maleic anhydride polybutadiene resin, performing ultrasonic treatment to allow the resin to fully penetrate into the interior of the basalt fiber, and then heating, curing, cooling and shaping to obtain a high-performance basalt fiber composite material.

[0037] Example 2

[0038] This embodiment provides a method for manufacturing a basalt high-performance fiber composite material. The difference from the above-mentioned embodiment 1 is that after obtaining the high-performance basalt fiber composite material, it is further processed. The specific steps include:

[0039] S6: Weaving the basalt fibers in step S5 alternately in the transverse and longitudinal directions to form a basalt base cloth;

[0040] S7: preparing a composite material, wherein the composite material is prepared from the following components in parts by weight: 20 parts of epoxy resin, 11 parts of silicone resin, 17 parts of polyurethane resin, 3 parts of plasticizer, 2 parts of curing agent and 7 parts of EPDM rubber;

[0041] S8: coating the composite material on the surface of the basalt base cloth, and drying and curing the composite material to finally obtain another high-performance basalt fiber composite material.

[0042] Comparative Example 1

[0043] This comparative example provides a method for manufacturing a basalt high-performance fiber composite material. The manufacturing method of this comparative example 1 is basically the same as that of Example 1, and the difference is only in the following steps:

[0044] S1: The basalt fiber is cleaned by ultrasonic washing method;

[0045] S2: preparing a hydrogen fluoride acid solution, and immersing the basalt fiber in the acid solution to complete the surface acidification treatment of the basalt fiber, wherein the concentration of the hydrogen fluoride acid solution is 10 mol / L, and the basalt fiber is immersed in the acid solution for 1 hour. After the immersion is completed, spraying the basalt fiber with a sodium hydroxide solution, and then thoroughly rinsing it;

[0046] Step S3 is the same as in Example 1;

[0047] S4: dissolving the carboxylated multi-walled carbon nanotubes in an ethanol solution, wherein the mass ratio of the carboxylated multi-walled carbon nanotubes to the ethanol solution is 1:12, stirring to form a dispersion, placing the basalt fiber obtained in step S2 in the dispersion to perform a grafting reaction, and then spraying a sodium hydroxide solution on the basalt fiber, and then thoroughly rinsing it;

[0048] The processing techniques in other steps S5 are exactly the same as those in Example 1 and will not be described in detail. Finally, a basalt high-performance fiber composite material is obtained.

[0049] Comparative Example 2

[0050] This comparative example provides a method for manufacturing a basalt high-performance fiber composite material, which is basically the same as the manufacturing method of Example 2, except that: in S6 of this comparative example, the basalt fibers in step S5 are woven alternately in the transverse and longitudinal directions to form a basalt base cloth, and the high-performance basalt fiber composite material is directly obtained.

[0051] Comparative Example 3

[0052] This comparative example provides a method for manufacturing a basalt high-performance fiber composite material, comprising the following steps:

[0053] S1: The basalt fiber is cleaned by ultrasonic washing method, and then the cleaned basalt fiber is grafted with boron nitride to complete pretreatment to improve the surface roughness of the basalt fiber. Specifically:

[0054] S11: firstly prepare a dilute nitric acid solution to pickle the basalt fiber, and the concentration of the dilute hydrochloric acid solution is 0.8 mol / L;

[0055] S12: Then, a boron nitride suspension is prepared by mixing boron nitride powder with an isopropanol solution in a mass ratio of 3:1, and sodium lauryl sulfate and polyvinyl pyrrolidone are added, and the mixture is prepared by ultrasonic treatment and mixing;

[0056] S13: placing the acid-washed basalt fiber in the boron nitride suspension and stirring to obtain the basalt fiber grafted with boron nitride;

[0057] S5: preparing maleic anhydride polybutadiene resin, heating the maleic anhydride polybutadiene resin to a molten state, immersing basalt fibers grafted with boron nitride and multi-walled carbon nanotubes respectively into the maleic anhydride polybutadiene resin, performing ultrasonic treatment to allow the resin to fully penetrate into the basalt fibers, and then heating, curing, cooling and shaping to obtain a high-performance basalt fiber composite material.

[0058] Comparative Example 4

[0059] Comparative Example 4 provides a method for manufacturing a basalt high-performance fiber composite material. The difference from Comparative Example 3 is that this comparative example further includes the following steps:

[0060] S6: Weaving the basalt fibers in step S5 alternately in the transverse and longitudinal directions to form a basalt base cloth;

[0061] S7: preparing a composite material, wherein the composite material is prepared from the following components in parts by weight: 20 parts of epoxy resin, 11 parts of silicone resin, 17 parts of polyurethane resin, 3 parts of plasticizer, 2 parts of curing agent and 7 parts of EPDM rubber;

[0062] S8: coating the composite material on the surface of the basalt base cloth, and drying and curing the composite material to finally obtain another high-performance basalt fiber composite material.

[0063] Comparative Example 5

[0064] This comparative example 5 provides a method for manufacturing a basalt high-performance fiber composite material, which differs from the method in Example 1 in the following steps:

[0065] S1: The basalt fiber is cleaned by ultrasonic washing method;

[0066] S2: preparing a hydrogen fluoride acid solution, and immersing the basalt fiber in the acid solution to complete the surface acidification treatment of the basalt fiber, wherein the concentration of the hydrogen fluoride acid solution is 10 mol / L, and the basalt fiber is immersed in the acid solution for 1 hour;

[0067] The processing techniques in other steps S3 to S5 are exactly the same as those in Example 1 and will not be described in detail. Finally, a basalt high-performance fiber composite material is obtained.

[0068] Comparative Example 6

[0069] This comparative example 6 provides a method for manufacturing a basalt high-performance fiber composite material, which is different from the comparative example 5 in that after obtaining the high-performance basalt fiber composite material, it is further processed, and the specific steps include:

[0070] S6: Weaving the basalt fibers in step S5 alternately in the transverse and longitudinal directions to form a basalt base cloth;

[0071] S7: preparing a composite material, wherein the composite material is prepared from the following components in parts by weight: 20 parts of epoxy resin, 11 parts of silicone resin, 17 parts of polyurethane resin, 3 parts of plasticizer, 2 parts of curing agent and 7 parts of EPDM rubber;

[0072] S8: coating the composite material on the surface of the basalt base cloth, and drying and curing the composite material to finally obtain another high-performance basalt fiber composite material.

[0073] Experimental Example 1

[0074] The same batch of basalt fiber raw materials were used to produce according to the manufacturing processes of Example 1, Comparative Example 1, Comparative Example 3 and Comparative Example 5, and 10 batches of products were produced in batches according to the manufacturing method in each embodiment (comparative example). The products of each batch in each embodiment (comparative example) were tested for various indicators. Among the 10 test results of each embodiment (comparative example), the highest and lowest values ​​were removed, and the average value of the remaining test results was taken, and analyzed, as follows:

[0075] Table 1 Experimental data comparison table of Example 1 and each comparative example

[0076]

[0077] Notes: (1) The density test was carried out by the pycnometer method. The temperature pycnometer (50 mL) used in the experiment was: Nanjing Jiaoziteng Scientific Instrument Co., Ltd.; electronic scale (accuracy: 1 mg): Beijing Langke Xingye Weighing Equipment Co., Ltd.; constant temperature oven: model: TF-3, Suzhou Tongfu Oven Manufacturing Co., Ltd.; constant temperature water bath: DK-S35, Shanghai Jiwei Testing Instrument Equipment Co., Ltd.;

[0078] (2) In the tensile strength and elongation at break tests, an electro-hydraulic servo universal testing machine was used, the test sample size was 200 mm long, and the tensile speed was 40 mm / min;

[0079] (3) The wear resistance test is to judge by the mass loss rate of the product under the action of external forces of the same magnitude and duration;

[0080] (4) The corrosion resistance test is to measure the mass loss rate of the product after soaking it in strong acid and strong alkali solutions of the same concentration for 2 hours and then stirring it intermittently for 2 hours.

[0081] It can be seen from the above test data that compared with the basalt fiber raw material and the comparative examples, Example 1 of the present invention has excellent tensile properties, wear resistance, thermal stability and corrosion resistance, especially the tensile performance is particularly remarkable. Specifically, compared with the basalt fiber raw material, the product density of Example 1 has not changed significantly, but the differences in tensile strength and elongation at break are more obvious. After the boron nitride grafting and multi-walled carbon nanotube grafting in Example 1, the maleic anhydride polybutadiene resin is coated. The basalt fiber after the two graftings is more thoroughly combined with the above resin, thereby improving the tensile properties of the final product. In addition, the corrosion resistance is stronger, which further proves that the resin matrix has a high degree of bonding with the basalt fiber, which can provide additional protection, so that the composite material has a lower mass loss rate in a corrosive environment.

[0082] In addition, by comparing Example 1 with Comparative Example 1, Comparative Example 3 and Comparative Example 5, in Comparative Example 1, the basalt fiber was not grafted with boron nitride, and the basalt fiber was deacidified, that is, it was thoroughly deacidified before reacting with the maleic anhydride polybutadiene resin. Obviously, the performance of the product in Comparative Example 1 is much lower than the experimental results in Example 1. In addition, please compare the experimental results of Comparative Example 1 and Comparative Example 5. The only difference between Comparative Example 1 and Comparative Example 5 is that Comparative Example 5 did not undergo any deacidification treatment throughout the process, and the product of Comparative Example 5 is superior in both tensile strength and corrosion resistance. From Comparative Example 1, it can be seen that the present invention does not need to perform any deacidification treatment on the basalt fiber treated products of each step. If deacidification is performed, the performance of the final product will be affected. This may be because the reaction between the deacidified basalt fiber and the maleic anhydride-treated polybutadiene resin is significantly weaker than the reaction without deacidification; in Comparative Example 3, multi-walled carbon nanotubes were not grafted on the basalt fiber, and in Comparative Example 5, boron nitride was not grafted on the basalt fiber. No matter which step is missing, it affects the characteristics of the final product, resulting in reduced tensile strength, corrosion resistance and high temperature resistance.

[0083] Experimental Example 2

[0084] The same batch of basalt fiber raw materials were used to produce according to the manufacturing processes of Example 2, Comparative Example 2, Comparative Example 4 and Comparative Example 6, and 10 batches of products were produced in batches according to the manufacturing method in each embodiment (comparative example). The products of each batch in each embodiment (comparative example) were tested for various indicators. Among the 10 test results of each embodiment (comparative example), the highest and lowest values ​​were removed, and the average value of the remaining test results was taken, and analyzed, as follows:

[0085] Table 2 Experimental data comparison table of Example 2 and each comparative example

[0086]

[0087] Note: (1) The above impact resistance test is performed by using a 40kg lead ball to drop the sample from a height of 1m, and the number of drops is measured when the sample is damaged.

[0088] (2) In addition, in the flame retardant performance test, the damage length refers to the length of the sample that is damaged when the sample is of the same size, at the same high temperature, and in the same time period. The longer the length, the worse the flame retardant effect.

[0089] Through the analysis of the experimental results of the above-mentioned Experimental Example 2, it can be known that this Example 2 adds multiple processing steps on the basis of Example 1, specifically, the basalt fiber composite material in Example 1 is woven and then treated with a resin composite material. It is not difficult to see from the experimental data of Example 2 and Example 1 that after it is woven into a surface and then treated with an ordinary resin, its mechanical properties are stronger; in addition, the last step of composite material impregnation, that is, the impregnation treatment of the mixed resin, is not carried out in Comparative Example 2, and the performance indicators of the product obtained in Comparative Example 2 are slightly lower; please refer to the data in Tables 1 and 2 again. As described in the table, the difference between the manufacturing method of Comparative Example 4 and Comparative Example 3 is that in Comparative Example 4, on the basis of Comparative Example 3, further processing is performed, and the fiber is woven and then treated with a composite material resin. The tensile properties of the high-performance composite fiber material obtained are stronger, and the same is true for Comparative Example 6 and Comparative Example 5.

[0090] In general, through the technical solution of the present invention, in the manufacturing method, the basalt fiber is grafted with boron nitride to improve the roughness of the fiber surface, and then multi-walled carbon nanotubes are grafted, which can improve the various properties of the final basalt fiber conforming to the material. At the same time, the two grafting steps make the basalt fiber acidic, and finally coated with maleic anhydride polybutadiene resin. The acidic basalt fiber can improve the bonding strength with the maleic anhydride polybutadiene resin. The basalt fiber composite material finally obtained has strong tensile properties, impact resistance and wear resistance.

[0091] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A basalt high-performance fiber composite material, characterized in that: The fiber composite material is obtained by processing, cooling and shaping basalt fibers, and is made of the following components by weight: 5-10 parts of basalt fibers, 77-94 parts of boron nitride, 68-75 parts of multi-walled carbon nanotubes and 87-105 parts of maleic anhydride polybutadiene resin.

2. A method for manufacturing the basalt high-performance fiber composite material according to claim 1, characterized in that: The following steps are involved: Step S1: using an ultrasonic water washing method to clean the basalt fiber, and then grafting boron nitride on the cleaned basalt fiber to complete pretreatment to improve the surface roughness of the basalt fiber; Step S2: preparing a hydrogen fluoride acid solution, and immersing the basalt fiber in the acid solution to complete the acidification treatment of the basalt fiber surface; Step S3: performing oxidation treatment on the multi-walled carbon nanotubes: preparing a nitric acid solution and a sulfuric acid solution, placing the multi-walled carbon nanotubes in a mixed solution of the nitric acid solution and the sulfuric acid solution for reaction, and obtaining carboxylated multi-walled carbon nanotubes; Step S4: dissolving the carboxylated multi-walled carbon nanotubes in an ethanol solution, stirring to form a dispersion, placing the basalt fibers obtained in step S2 in the dispersion to perform a grafting reaction; Step S5: prepare maleic anhydride polybutadiene resin, heat the maleic anhydride polybutadiene resin to a molten state, immerse the basalt fiber grafted with boron nitride and multi-walled carbon nanotubes respectively in the maleic anhydride polybutadiene resin, perform ultrasonic treatment to allow the resin to fully penetrate into the interior of the basalt fiber, and then heat, cure, cool and shape to obtain a high-performance basalt fiber composite material.

3. The method for manufacturing a basalt high-performance fiber composite material according to claim 2, characterized in that: The following steps are also included: Step S6: Weaving the basalt fibers in step S5 alternately in the transverse and longitudinal directions to form a basalt base cloth; Step S7: preparing a composite material, wherein the composite material is prepared from the following components in parts by weight: 15 to 35 parts of epoxy resin, 8 to 15 parts of silicone resin, 10 to 25 parts of polyurethane resin, 2 to 5 parts of plasticizer, 2 to 3 parts of curing agent and 5 to 10 parts of EPDM rubber; Step S8: coating the composite material on the surface of the basalt base cloth, and drying and curing the composite material.

4. The method for manufacturing a basalt high-performance fiber composite material according to claim 2, characterized in that: The step of grafting boron nitride onto the surface of the basalt fiber in step S1 includes the following sub-steps: Step S11: firstly prepare a dilute hydrochloric acid solution to acid wash the basalt fiber; Step S12: Then prepare a boron nitride suspension by mixing boron nitride powder with an isopropanol solution, adding sodium lauryl sulfate and polyvinyl pyrrolidone, and mixing after ultrasonic treatment; Step S13: placing the acid-washed basalt fiber in the boron nitride suspension and stirring to obtain the basalt fiber grafted with boron nitride.

5. The method for manufacturing a basalt high-performance fiber composite material according to claim 4, characterized in that: The concentration of the dilute hydrochloric acid solution is 0.8 mol / L, and the mixing mass ratio of the boron nitride powder and the isopropanol solution is 3:

1.

6. The method for manufacturing a basalt high-performance fiber composite material according to claim 2, characterized in that: The concentration of the hydrogen fluoride acid solution in step S2 is 10 mol / L, and the basalt fiber is immersed in the acid solution for 1 hour.

7. The method for manufacturing a basalt high-performance fiber composite material according to claim 2, characterized in that: In step S3, the multi-walled carbon nanotubes are first placed in a nitric acid solution and ultrasonically vibrated for 40 minutes, and then a sulfuric acid solution is added to the mixed solution, and the mixture is stirred at 110-150° C. for 10-24 hours and then filtered. The above steps are repeated 2-4 times until the filtrate is neutral.

8. The method for manufacturing a basalt high-performance fiber composite material according to claim 2, characterized in that: In the step S4, the mass ratio of the carboxylated multi-walled carbon nanotubes to the ethanol solution is 1:12.

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