CN115353733A - Fatigue-resistant polymer nano elastic wave material and preparation method thereof - Google Patents
Fatigue-resistant polymer nano elastic wave material and preparation method thereof Download PDFInfo
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino-carboxylic acids or of polyamines and polycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
- C08K2003/168—Zinc halides
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- C—CHEMISTRY; METALLURGY
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- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention discloses a fatigue-resistant polymer nano elastic wave material and a preparation method thereof, wherein the material comprises the following raw materials: aramid fiber, potassium hydroxide, potassium permanganate, dimethyl sulfoxide, zinc chloride, sodium hydroxide, absolute ethyl alcohol, natural graphite flakes, concentrated sulfuric acid, hydrochloric acid, hydrogen peroxide, concentrated phosphoric acid and deionized water. According to the invention, the anti-fatigue polymer nano elastic wave material is prepared by combining the original graphene oxide aramid paper-based composite solution and the graphene oxide solution, the tensile strength, the elongation at break and the modulus of the material are effectively improved, and the ultraviolet aging resistance and the fatigue resistance are also greatly improved.
Description
Technical Field
The invention belongs to the technical field of sound equipment, and particularly relates to a fatigue-resistant polymer nano elastic wave material and a preparation method thereof.
Background
The elastic wave material includes cotton cloth, silk, rayon, NOMEX fiber cloth, etc. and is produced through soaking phenolic resin in alcohol solution and hot pressing. The weaving mode, the warp and weft density, the yarn count thickness, the gum dipping concentration, the forming hot-pressing temperature, the forming time and the like of the cloth have great influence on the strength, the smoothness and the fatigue resistance of the elastic wave. The greater the number of corrugations, the deeper the corrugations, and the thinner the material, the greater the compliance of the spring.
At present, aramid fiber is a novel high-tech synthetic fiber, has excellent performances of ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance, light weight and the like, has the strength of 5-6 times that of a steel wire, the modulus of 2-3 times that of the steel wire or glass fiber, the toughness of 2 times that of the steel wire, the weight of only about 1/5 of that of the steel wire, and does not decompose or melt at the temperature of 560 ℃. The material has good insulativity and ageing resistance, has a long life cycle, and is particularly necessary to be used as a sound wave-ejecting material.
Therefore, it is necessary to invent a preparation method of the fatigue-resistant polymer nano elastic wave material to solve the above problems.
Disclosure of Invention
Aiming at the problems, the invention provides a fatigue-resistant polymer nano elastic wave material and a preparation method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a fatigue-resistant polymer nano elastic wave material comprises the following components in parts by weight: 10-15 parts of aramid fiber, 15-20 parts of potassium hydroxide, 30-35 parts of potassium permanganate, 60-70 parts of dimethyl sulfoxide, 10-15 parts of zinc chloride, 10-15 parts of sodium hydroxide, 50-60 parts of absolute ethyl alcohol, 20-25 parts of natural graphite flakes, 27-32 parts of concentrated sulfuric acid, 30-35 parts of hydrochloric acid, 20-25 parts of hydrogen peroxide, 30-35 parts of concentrated phosphoric acid and deionized water.
The preparation method of the fatigue-resistant nano elastic wave material comprises the following steps:
s1, preparing aramid fiber powder: adding dimethyl sulfoxide, potassium hydroxide and aramid fibers into a reaction kettle, continuously stirring at normal temperature to form transparent black red, so as to obtain an aramid fiber dispersion liquid, mixing and stirring a proper amount of the aramid fiber dispersion liquid and deionized water for 30min, then carrying out vacuum filtration, repeatedly washing with the deionized water and absolute ethyl alcohol, and finally drying to obtain aramid fiber powder;
s2, preparing a graphene oxide solution: uniformly mixing concentrated sulfuric acid and concentrated phosphoric acid in a dry reaction kettle, quickly adding natural graphite flakes, then carrying out ice water bath on the reaction kettle, stirring, adding potassium permanganate into a reaction system, uniformly mixing, continuously stirring, injecting warm deionized water, reacting, adding hydrogen peroxide, using deionized water and dilute hydrochloric acid to repeatedly clean, drying precipitates to obtain graphite oxide powder, dissolving the dried powder in deionized water, and stirring to obtain a uniformly dispersed graphene oxide solution;
s3, preparing an aramid paper-based composite solution: adding deionized water into the aramid fiber powder obtained in the step S1, carrying out protonation again, separating out, reacting with zinc oxide, adding deionized water and sodium hydroxide solution, mixing, washing the mixture with absolute ethyl alcohol and deionized water for several times, and centrifuging to obtain an aramid paper-based composite solution;
s4, preparing a reduced graphene oxide aramid paper base composite solution: adding deionized water into the aramid fiber powder obtained in the step S1, re-protonating, separating out, reacting with a graphene oxide solution, and centrifuging to obtain a reduced graphene oxide aramid paper-based composite solution;
s5, preparing the fatigue-resistant polymer nano elastic wave material: and (4) mixing the aramid paper-based composite solution obtained in the step (S3) with the reduced graphene oxide aramid paper-based composite solution prepared in the step (S4) according to the ratio of 1.
Further, in the step S1, the stirring time of the dimethyl sulfoxide, the potassium hydroxide and the aramid fiber is 24 hours at normal temperature, and the deionized water is 5 times of the aramid fiber suspension.
Further, in the step S2, the concentration of the concentrated sulfuric acid is 98%, the concentration of the concentrated phosphoric acid is 85%, and the concentration of the hydrogen peroxide is 5%.
Further, the specific preparation method of the graphene oxide solution in the step S2 includes the following steps:
(1) Firstly, uniformly mixing concentrated sulfuric acid with the concentration of 98% and concentrated phosphoric acid with the concentration of 85% in a dry reaction kettle, and then quickly adding natural crystalline flake graphite;
(2) Then, carrying out ice-water bath on the reaction kettle, controlling the temperature of a reaction system to be 1-3 ℃, continuously stirring until natural crystalline flake graphite is completely dissolved, adding potassium permanganate into the reaction system for 8 times in sequence, uniformly mixing, controlling the temperature of the system to be 12-14 ℃, continuously stirring for 3.5 hours until the solution is completely dark green, slowly injecting warm deionized water, continuously stirring for 45 minutes, controlling the temperature of the system to be 90-95 ℃ during the period, continuously stirring after the reaction is finished, adding hydrogen peroxide with the concentration of 5% until the solution is golden yellow, filtering while the solution is hot to obtain yellow precipitate, and repeatedly cleaning with deionized water and dilute hydrochloric acid until the pH of the filtrate is =7;
(3) Detecting the existence of sulfate ions in the filtrate by using barium chloride, namely finishing the reaction, and drying the obtained yellow precipitate in a drying oven at 50 ℃ for 60 hours to obtain graphite oxide powder;
(4) And finally, dissolving the dried powder in deionized water, stirring to uniformly disperse the powder, and then performing ultrasonic treatment for 1 hour at 800W to completely peel the powder for 1 hour to obtain a uniformly dispersed graphene oxide solution.
Further, the concentration of the aramid fiber solution in the step S3 is 2g/L, the mass ratio of the aramid fiber solution to the zinc oxide is 1.
Further, the specific preparation steps of the aramid paper-based composite solution in the step S3 are as follows: adding deionized water into the aramid fiber powder in the step S1 for protonation again and separating out, weighing the obtained aramid fiber solution with the concentration of 2g/L and zinc oxide according to the mass ratio of 1.
The invention has the technical effects and advantages that:
according to the invention, the anti-fatigue high-molecular nano elastic wave material is prepared by combining the original graphene oxide aramid paper base composite solution and the graphene oxide solution, the tensile strength, the elongation at break and the modulus of the material are effectively improved, and the ultraviolet aging resistance and the fatigue resistance of the material are also greatly improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete description of the technical solutions in the embodiments of the present invention, it is obvious that the described embodiments are a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1:
the invention provides a fatigue-resistant polymer nano elastic wave material which comprises the following raw materials in parts by weight: 10 parts of aramid fiber, 20 parts of potassium hydroxide, 30 parts of potassium permanganate, 60 parts of dimethyl sulfoxide, 15 parts of zinc chloride, 10 parts of sodium hydroxide, 50 parts of absolute ethyl alcohol, 20 parts of natural graphite flakes, 32 parts of concentrated sulfuric acid, 35 parts of hydrochloric acid, 20 parts of hydrogen peroxide, 30 parts of concentrated phosphoric acid and deionized water.
The preparation method of the fatigue-resistant nano elastic wave material comprises the following steps:
s1, preparing aramid fiber powder: adding dimethyl sulfoxide, potassium hydroxide and aramid fiber into a reaction kettle, stirring for 24 hours at normal temperature to obtain transparent black red, obtaining an aramid fiber dispersion liquid, mixing and stirring a proper amount of the aramid fiber dispersion liquid and 5 times of deionized water for 30 minutes, then carrying out vacuum filtration, repeatedly washing with deionized water and absolute ethyl alcohol, and finally drying to obtain aramid fiber powder;
s2, preparing a graphene oxide solution: firstly, uniformly mixing concentrated sulfuric acid with the concentration of 98% and concentrated phosphoric acid with the concentration of 85% in a dry reaction kettle, and then quickly adding natural crystalline flake graphite; then, carrying out ice-water bath on the reaction kettle, controlling the temperature of a reaction system to be 1-3 ℃, continuously stirring until natural crystalline flake graphite is completely dissolved, sequentially adding potassium permanganate into the reaction system for 8 times, uniformly mixing, controlling the temperature of the system to be 12-14 ℃, continuously stirring for 3.5 hours until the solution is completely dark green, slowly injecting warm deionized water, continuously stirring for 45 minutes, controlling the temperature of the system to be 90-95 ℃ during the period, continuously stirring after the reaction is finished, adding 5% hydrogen peroxide until the solution is golden yellow, filtering while hot to obtain yellow precipitate, and repeatedly cleaning with deionized water and dilute hydrochloric acid until the pH of the filtrate is =7; detecting the existence of sulfate ions in the filtrate by using barium chloride, namely finishing the reaction, and drying the obtained yellow precipitate in a drying oven at 50 ℃ for 60 hours to obtain graphite oxide powder; finally, dissolving the dried powder in deionized water, stirring to uniformly disperse the powder, and then performing ultrasonic treatment at 800W for 1h to completely strip the powder for 1h to obtain a uniformly dispersed graphene oxide solution;
s3, preparing an aramid paper-based composite solution: adding deionized water into the aramid fiber powder obtained in the step S1, carrying out protonation again, separating out, weighing 2g/L of obtained aramid fiber solution and zinc oxide according to a mass ratio of 1;
s4, preparing a reduced graphene oxide aramid paper base composite solution: adding deionized water into the aramid fiber powder obtained in the step S1, re-protonating, separating out, reacting with a graphene oxide solution, and centrifuging to obtain a reduced graphene oxide aramid paper-based composite solution;
s5, preparing the fatigue-resistant polymer nano elastic wave material: and (4) mixing the aramid paper-based composite solution obtained in the step (S3) with the reduced graphene oxide aramid paper-based composite solution prepared in the step (S4) according to the ratio of 1.
Example 2:
the invention provides a preparation method of a fatigue-resistant polymer nano elastic wave material, which comprises the following raw materials in parts by weight: 15 parts of aramid fiber, 15 parts of potassium hydroxide, 35 parts of potassium permanganate, 70 parts of dimethyl sulfoxide, 10 parts of zinc chloride, 15 parts of sodium hydroxide, 60 parts of absolute ethyl alcohol, 25 parts of natural graphite flakes, 27 parts of concentrated sulfuric acid, 30 parts of hydrochloric acid, 25 parts of hydrogen peroxide, 35 parts of concentrated phosphoric acid and deionized water.
The preparation method of the fatigue-resistant nano elastic wave material comprises the following steps:
s1, preparing aramid fiber powder: adding dimethyl sulfoxide, potassium hydroxide and aramid fiber into a reaction kettle, stirring for 24 hours at normal temperature to obtain transparent black red, obtaining an aramid fiber dispersion liquid, mixing and stirring a proper amount of the aramid fiber dispersion liquid and 5 times of deionized water for 30 minutes, then carrying out vacuum filtration, repeatedly washing with deionized water and absolute ethyl alcohol, and finally drying to obtain aramid fiber powder;
s2, preparing a graphene oxide solution: firstly, uniformly mixing concentrated sulfuric acid with the concentration of 98% and concentrated phosphoric acid with the concentration of 85% in a dry reaction kettle, and then quickly adding natural crystalline flake graphite; then, carrying out ice-water bath on the reaction kettle, controlling the temperature of a reaction system to be 1-3 ℃, continuously stirring until natural crystalline flake graphite is completely dissolved, sequentially adding potassium permanganate into the reaction system for 8 times, uniformly mixing, controlling the temperature of the system to be 12-14 ℃, continuously stirring for 3.5 hours until the solution is completely dark green, slowly injecting warm deionized water, continuously stirring for 45 minutes, controlling the temperature of the system to be 90-95 ℃ during the period, continuously stirring after the reaction is finished, adding 5% hydrogen peroxide until the solution is golden yellow, filtering while hot to obtain yellow precipitate, and repeatedly cleaning with deionized water and dilute hydrochloric acid until the pH of the filtrate is =7; detecting the existence of no sulfate ions in the filtrate by using barium chloride, and drying the obtained yellow precipitate in a drying oven at 50 ℃ for 60 hours to obtain graphite oxide powder; finally, dissolving the dried powder in deionized water, stirring to uniformly disperse the powder, and then performing ultrasonic treatment at 800W for 1h to completely strip the powder for 1h to obtain a uniformly dispersed graphene oxide solution;
s3, preparing an aramid paper-based composite solution: adding deionized water into the aramid fiber powder in the step S1 for protonation again and separating out to obtain 2g/L aramid fiber solution and zinc oxide, weighing according to a mass ratio of 1;
s4, preparing a reduced graphene oxide aramid paper base composite solution: adding deionized water into the aramid fiber powder obtained in the step S1, re-protonating, separating out, reacting with a graphene oxide solution, and centrifuging to obtain a reduced graphene oxide aramid paper-based composite solution;
s5, preparing the fatigue-resistant polymer nano elastic wave material: and (4) mixing the aramid paper-based composite solution obtained in the step (S3) with the reduced graphene oxide aramid paper-based composite solution prepared in the step (S4) according to the ratio of 1.
Example 3:
the invention provides a preparation method of a fatigue-resistant polymer nano elastic wave material, which comprises the following raw materials in parts by weight: 13 parts of aramid fiber, 17 parts of potassium hydroxide, 33 parts of potassium permanganate, 65 parts of dimethyl sulfoxide, 13 parts of zinc chloride, 13 parts of sodium hydroxide, 55 parts of absolute ethyl alcohol, 23 parts of natural graphite flakes, 30 parts of concentrated sulfuric acid, 33 parts of hydrochloric acid, 23 parts of hydrogen peroxide, 33 parts of concentrated phosphoric acid and deionized water.
The preparation method of the fatigue-resistant nano elastic wave material comprises the following steps:
s1, preparing aramid fiber powder: adding dimethyl sulfoxide, potassium hydroxide and aramid fiber into a reaction kettle, stirring for 24 hours at normal temperature to obtain transparent black red, obtaining an aramid fiber dispersion liquid, mixing and stirring a proper amount of the aramid fiber dispersion liquid and 5 times of deionized water for 30 minutes, then carrying out vacuum filtration, repeatedly washing with deionized water and absolute ethyl alcohol, and finally drying to obtain aramid fiber powder;
s2, preparing a graphene oxide solution: firstly, uniformly mixing concentrated sulfuric acid with the concentration of 98% and concentrated phosphoric acid with the concentration of 85% in a dry reaction kettle, and then quickly adding natural crystalline flake graphite; then, carrying out ice-water bath on the reaction kettle, controlling the temperature of a reaction system to be 1-3 ℃, continuously stirring until natural crystalline flake graphite is completely dissolved, sequentially adding potassium permanganate into the reaction system for 8 times, uniformly mixing, controlling the temperature of the system to be 12-14 ℃, continuously stirring for 3.5 hours until the solution is completely dark green, slowly injecting warm deionized water, continuously stirring for 45 minutes, controlling the temperature of the system to be 90-95 ℃ during the period, continuously stirring after the reaction is finished, adding 5% hydrogen peroxide until the solution is golden yellow, filtering while hot to obtain yellow precipitate, and repeatedly cleaning with deionized water and dilute hydrochloric acid until the pH of the filtrate is =7; detecting the existence of no sulfate ions in the filtrate by using barium chloride, and drying the obtained yellow precipitate in a drying oven at 50 ℃ for 60 hours to obtain graphite oxide powder; finally, dissolving the dried powder in deionized water, stirring to uniformly disperse the powder, and then performing ultrasonic treatment at 800W for 1h to completely strip the powder for 1h to obtain a uniformly dispersed graphene oxide solution;
s3, preparing an aramid paper-based composite solution: adding deionized water into the aramid fiber powder in the step S1 for protonation again and separating out to obtain 2g/L aramid fiber solution and zinc oxide, weighing according to a mass ratio of 1;
s4, preparing a reduced graphene oxide aramid paper base composite solution: adding deionized water into the aramid fiber powder obtained in the step S1, re-protonating, separating out, reacting with a graphene oxide solution, and centrifuging to obtain a reduced graphene oxide aramid paper-based composite solution;
s5, preparing the fatigue-resistant polymer nano elastic wave material: and (4) mixing the aramid paper-based composite solution obtained in the step (S3) with the reduced graphene oxide aramid paper-based composite solution prepared in the step (S4) according to the ratio of 1.
Example 4:
the tensile strength, the elongation at break, the modulus, the ultraviolet aging resistance and the fatigue resistance of the fatigue-resistant polymer nano elastic wave material prepared in the embodiments 1 to 3 are studied, and the following table shows that:
| examples | Tensile strength | Expansion and contraction rate at break | Modulus of elasticity | Ultraviolet aging resistance | Fatigue resistance performance |
| 1 | 13.45Pa | 2.36％ | 2.01GPa | 169h | 189h |
| 2 | 14.25Pa | 2.45％ | 1.56GPa | 178h | 202h |
| 3 | 15.05Pa | 1.79％ | 1.23GPa | 165h | 196h |
| Comparative example | 10.45Pa | 3.56％ | 0.88GPa | 120h | 150h |
And (4) conclusion: the original graphene oxide aramid paper-based composite solution and the graphene oxide solution are combined to prepare the fatigue-resistant high-molecular nano elastic wave material, so that the nano elastic wave material with excellent fatigue resistance and ultraviolet aging resistance is successfully prepared, the tensile strength, the elongation at break and the modulus of the nano elastic wave material are effectively improved, and the ultraviolet aging resistance and the fatigue resistance of the nano elastic wave material are greatly improved
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A fatigue-resistant polymer nano elastic wave material is characterized in that: comprises the following components in parts by weight: 10-15 parts of aramid fiber, 15-20 parts of potassium hydroxide, 30-35 parts of potassium permanganate, 60-70 parts of dimethyl sulfoxide, 10-15 parts of zinc chloride, 10-15 parts of sodium hydroxide, 50-60 parts of absolute ethyl alcohol, 20-25 parts of natural graphite flakes, 27-32 parts of concentrated sulfuric acid, 30-35 parts of hydrochloric acid, 20-25 parts of hydrogen peroxide, 30-35 parts of concentrated phosphoric acid and deionized water.
2. The method for preparing the fatigue-resistant polymer nano elastic wave material as claimed in claim 1, wherein the method comprises the following steps: the preparation method comprises the following steps:
s1, preparing aramid fiber powder: adding dimethyl sulfoxide, potassium hydroxide and aramid fiber into a reaction kettle, continuously stirring at normal temperature to form transparent black red, thus obtaining an aramid fiber dispersion liquid, mixing and stirring the aramid fiber dispersion liquid with deionized water for 30min, then carrying out vacuum filtration, repeatedly washing with deionized water and absolute ethyl alcohol, and finally drying to obtain aramid fiber powder;
s2, preparing a graphene oxide solution: uniformly mixing concentrated sulfuric acid and concentrated phosphoric acid in a dry reaction kettle, adding natural graphite flakes, then carrying out ice water bath on the reaction kettle, stirring, adding potassium permanganate into a reaction system, uniformly mixing, continuously stirring, injecting warm deionized water, reacting, adding hydrogen peroxide, using deionized water and dilute hydrochloric acid to repeatedly clean, drying precipitates to obtain graphite oxide powder, dissolving the dried powder in deionized water, and stirring to obtain a uniformly dispersed graphene oxide solution;
s3, preparing an aramid paper-based composite solution: adding deionized water into the aramid fiber powder obtained in the step S1, carrying out protonation again, separating out, reacting with zinc oxide, adding deionized water and sodium hydroxide solution, mixing, washing the mixture with absolute ethyl alcohol and deionized water for several times, and centrifuging to obtain an aramid paper-based composite solution;
s4, preparing a reduced graphene oxide aramid paper base composite solution: adding deionized water into the aramid fiber powder obtained in the step S1, re-protonating, separating out, reacting with a graphene oxide solution, and centrifuging to obtain a reduced graphene oxide aramid paper-based composite solution;
s5, preparing the fatigue-resistant polymer nano elastic wave material: and (4) mixing the aramid paper-based composite solution obtained in the step (S3) with the reduced graphene oxide aramid paper-based composite solution prepared in the step (S4) according to the ratio of 1.
3. The method of claim 2, wherein: in the step S1, the stirring time of the dimethyl sulfoxide, the potassium hydroxide and the aramid fiber is 24 hours at normal temperature, and the deionized water is 5 times of the aramid fiber suspension.
4. The method of claim 2, wherein: in the step S2, the concentration of the concentrated sulfuric acid is 98%, the concentration of the concentrated phosphoric acid is 85%, and the concentration of the hydrogen peroxide is 5%.
5. The method of manufacturing according to claim 4, characterized in that: the specific preparation method of the graphene oxide solution in the step S2 comprises the following steps:
(1) Uniformly mixing concentrated sulfuric acid with the concentration of 98% and concentrated phosphoric acid with the concentration of 85% in a dry reaction kettle, and then quickly adding natural crystalline flake graphite;
(2) Performing ice-water bath on a reaction kettle, controlling the temperature of a reaction system to be 1-3 ℃, continuously stirring until natural flake graphite is completely dissolved, adding potassium permanganate into the reaction system for 8 times in sequence, uniformly mixing, controlling the temperature of the system to be 12-14 ℃, continuously stirring for 3.5 hours until the solution is completely dark green, injecting warm deionized water, continuously stirring for 45 minutes, controlling the temperature of the system to be 90-95 ℃ during the period, continuously stirring after the reaction is finished, adding hydrogen peroxide with the concentration of 5% until the solution is golden yellow, filtering while hot to obtain yellow precipitate, and repeatedly cleaning with deionized water and dilute hydrochloric acid until the pH of the filtrate is =7;
(3) Detecting the existence of no sulfate ions in the filtrate by using barium chloride, and drying the obtained yellow precipitate in a drying oven at 50 ℃ for 60 hours to obtain graphite oxide powder;
(4) And dissolving the dried powder in deionized water, stirring to uniformly disperse the powder, and then carrying out ultrasonic treatment at 800W for 1h to completely strip the powder for 1h to obtain a uniformly dispersed graphene oxide solution.
6. The method of claim 2, wherein: in the step S3, the concentration of the aramid fiber solution is 2g/L, the mass ratio of the aramid fiber solution to the zinc oxide is 1.
7. The method for preparing a feedstock according to claim 6, characterized in that: the specific preparation steps of the aramid paper-based composite solution in the step S3 are as follows:
adding deionized water into the aramid fiber powder in the step S1 for protonation again and separating out, weighing the obtained aramid fiber solution with the concentration of 2g/L and zinc oxide according to the mass ratio of 1.
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