CN108584927B - Preparation method of porous graphene powder for automobile alloy material - Google Patents
Preparation method of porous graphene powder for automobile alloy material Download PDFInfo
- Publication number
- CN108584927B CN108584927B CN201810505704.2A CN201810505704A CN108584927B CN 108584927 B CN108584927 B CN 108584927B CN 201810505704 A CN201810505704 A CN 201810505704A CN 108584927 B CN108584927 B CN 108584927B
- Authority
- CN
- China
- Prior art keywords
- graphene oxide
- preparation
- precipitate
- reaction
- alloy material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/184—Preparation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2204/00—Structure or properties of graphene
- C01B2204/20—Graphene characterized by its properties
- C01B2204/26—Mechanical properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2204/00—Structure or properties of graphene
- C01B2204/20—Graphene characterized by its properties
- C01B2204/32—Size or surface area
Abstract
The invention discloses a preparation method of porous graphene powder for an automobile alloy material, which comprises the following steps of 1, adding graphene oxide into absolute ethyl alcohol, then adding polyvinylpyrrolidone, and carrying out ultrasonic stirring until the graphene oxide is completely dispersed to obtain a graphene oxide dispersion liquid; step 2, adding the graphene oxide dispersion liquid into a sealed reaction kettle, carrying out pressure heating reaction for 1-3 hours, and carrying out gradient pressure reduction and temperature reduction reaction to obtain mixed graphene oxide; step 3, adding the mixed graphene oxide into an aluminum chloride solution, then stirring and introducing ammonia gas until no precipitate is generated, filtering and drying to obtain an aluminum hydroxide coated composite graphene oxide precipitate; step 4, adding the composite graphene oxide precipitate into an organic solvent for aeration reaction for 1-3h, and then taking out and drying to obtain a graphene oxide precipitate; and 5, adding the graphene oxide precipitate into an ethanol water solution, adding an acid solution and tea polyphenol, carrying out ultrasonic reaction for 2-3h to obtain a porous graphene precipitate, and filtering, washing and drying to obtain porous graphene powder.
Description
Technical Field
The invention belongs to the field of automobile alloy materials, and particularly relates to a preparation method of porous graphene powder for an automobile alloy material.
Background
The automobile spoiler is also called as an automobile empennage and is an additional plate arranged above the tail of an automobile, and the automobile spoiler has the functions of reducing the lifting force of the tail of the automobile in the driving process of the automobile and increasing the ground grabbing force of rear wheels, thereby improving the stability of the high-speed driving of the automobile.
The automobile spoiler belongs to the automobile exterior trim, and the material of the automobile spoiler needs to have the characteristics of good cold and hot alternation, heat and humidity resistance, aging resistance, impact resistance, chemical corrosion resistance, vibration resistance, weather resistance, scratch resistance, good dimensional stability and the like.
The common automobile spoiler materials in the market at present have the following three kinds:
the first one is glass fiber reinforced plastic, and the spoiler made of glass fiber reinforced plastic is relatively attached to the line of the vehicle body, so that the defects that the structural design freedom degree is low and the forming processability is general are overcome;
the second type is aluminum alloy, and the spoiler made of the aluminum alloy has strong metal texture appearance, good flow guiding effect, large defect density and low structural design freedom;
the third is carbon fiber, and the spoiler made of carbon fiber has high strength and high durability, and has the disadvantage of high cost.
Chinese patent publication No. CN104448762A discloses a polycarbonate alloy material and a method for preparing the same, wherein polycarbonate resin is used as a matrix resin, and thermoplastic polyester resin is used as an auxiliary resin, so that a spoiler produced from the polycarbonate alloy material has the advantages of large structural design freedom, good molding processability, low density, low cost and the like; and because the polycarbonate alloy material takes the hollow glass beads as a filling base material and takes the compatible toughening agent, the coupling agent, the stress cracking resistant agent, the organic light stabilizer and the like as processing aids, the automobile spoiler prepared from the polycarbonate alloy material has excellent tensile strength, bending modulus, impact strength, fluidity index, weather resistance, scratch resistance, chemical corrosion resistance and stress cracking resistance. Although the technical scheme provides that the hollow glass beads are used as the filling base material to achieve a good impact resistance effect, the hollow glass beads have the problem of being easily broken due to impact, and are very easy to damage in the using process, so that the base material needs to be filled with the hollow glass beads which are good in compatibility and stable in structure.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a preparation method of porous graphene powder for an automobile alloy material, which is simple and feasible, high in stability, free of waste water and waste, high in process environmental protection degree and in line with national requirements.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
a preparation method of porous graphene powder for automobile alloy materials comprises the following steps:
step 1, adding graphene oxide into absolute ethyl alcohol, then adding polyvinylpyrrolidone, and carrying out ultrasonic stirring until the graphene oxide is completely dispersed to obtain a graphene oxide dispersion liquid;
step 2, adding the graphene oxide dispersion liquid into a sealed reaction kettle, carrying out pressure heating reaction for 1-3 hours, and carrying out gradient pressure reduction and temperature reduction reaction to obtain mixed graphene oxide;
step 3, adding the mixed graphene oxide into an aluminum chloride solution, then stirring and introducing ammonia gas until no precipitate is generated, filtering and drying to obtain an aluminum hydroxide coated composite graphene oxide precipitate;
step 4, adding the composite graphene oxide precipitate into an organic solvent for aeration reaction for 1-3h, and then taking out and drying to obtain a graphene oxide precipitate;
and 5, adding the graphene oxide precipitate into an ethanol water solution, adding an acid solution and tea polyphenol, carrying out ultrasonic reaction for 2-3h to obtain a porous graphene precipitate, and filtering, washing and drying to obtain porous graphene powder.
The concentration of the graphene oxide in the absolute ethyl alcohol in the step 1 is 30-60g/L, the addition amount of the polyvinylpyrrolidone is 50-70% of the mass of the graphene oxide, the ultrasonic frequency of the ultrasonic stirring is 20-30kHz, and the temperature is 50-60 ℃.
The pressure of the pressure heating reaction in the step 2 is 3-5MPa, and the temperature is 80-100 ℃.
The procedure of the gradient pressure and temperature reduction reaction of the step 2 is as follows:
| pressure of | Temperature of | Time of day |
| 2-3MPa | 70-80℃ | 30-50min |
| 0.8-1MPa | 40-50℃ | 50-70min |
| 0.4-0.5MPa | At room temperature | 30-60min |
| Atmospheric pressure | At room temperature | 10-30min |
The concentration of the aluminum chloride in the step 3 is 0.12-0.18mo/L, and the concentration of the mixed graphene oxide in water is 5-10 g/L.
The introduction amount of ammonia gas in the step 3 is 310-350% of the molar amount of aluminum chloride, and the drying temperature is 50-70 ℃.
The concentration of the composite graphene oxide in the step 4 in an organic solvent is 30-50g/L, the organic solvent adopts one of acetone, ethanol or methanol, the aeration gas of the aeration reaction is nitrogen, the aeration flow rate is 20-40mL/min, and the drying temperature is 40-50 min.
The concentration of the graphene oxide precipitate in the step 5 in the ethanol aqueous solution is 20-40g/L, and the ethanol volume concentration of the ethanol aqueous solution is 50-70%.
The acid solution in the step 5 is hydrochloric acid solution, the concentration of the hydrochloric acid is 0.001-0.005mol/L, the pH is adjusted to 4-5 by adding the hydrochloric acid solution, the addition amount of the tea polyphenol is 30-60% of that of the graphene oxide precipitate, the ultrasonic frequency of the ultrasonic reaction is 40-50kHz, and the temperature is 70-80 ℃.
And (5) washing by using absolute ethyl alcohol, wherein the drying temperature is 80-90 ℃.
Step 1, adding graphene oxide into absolute ethyl alcohol, adding polyvinylpyrrolidone, forming a stable dispersion system under an ultrasonic condition, and uniformly distributing the graphene oxide in the absolute ethyl alcohol to form a dispersion suspension.
Step 2, putting the graphene oxide dispersion liquid into a sealed reaction kettle for pressure heating reaction, expanding the graphene oxide through the pressure heating reaction, and penetrating polyvinylpyrrolidone into pores of the graphene oxide to form a graphene oxide composite material with a doped structure, wherein ethanol is converted into a gaseous state under a heating condition to form an internal pressurization effect, and the graphene oxide composite material has a good penetration effect and ensures that the internal pressure and the external pressure of the graphene oxide are balanced; the mode that adopts gradient cooling step down to reduce pressure slowly releases pressure and temperature, forms comparatively stable pressure guard action, prevents the hole crackle that the cooling step down brought too fast to cause tensile strength's reduction.
And 3, adding graphene oxide into aluminum chloride, forming a good dispersion effect in a stirring mode, converting the aluminum chloride into aluminum hydroxide with a flocculent structure in the process of introducing ammonia gas, wrapping the graphene with the aluminum hydroxide, and filtering to obtain the aluminum hydroxide-coated graphene
And precipitating the alumina graphene.
And 4, placing the composite graphene oxide sediment coated by the aluminum hydroxide into an organic solvent for an aeration reaction, and removing water molecules in the aluminum hydroxide to form an aluminum oxide coating structure by utilizing the hydrophobicity and the adhesiveness of the organic solvent while not influencing the sediment structure, so that the graphene oxide is coated by particles.
Step 5, adding the alumina-coated graphene oxide precipitate into an ethanol aqueous solution to form a good dispersion system, adding an acid solution to convert alumina into aluminum ions, removing a coating layer to obtain composite alumina particles, and dissolving polyvinylpyrrolidone in an inner layer of the graphene oxide under the dual actions of the dissolution property of the ethanol aqueous solution and ultrasonic reaction to form a porous graphene oxide structure; and reducing the graphene oxide into graphene under the combined action of the ultrasound and the tea polyphenol.
From the above description, it can be seen that the present invention has the following advantages:
1. the preparation method is simple and easy to implement, high in stability, free of waste water and waste, high in process environmental protection degree and capable of meeting the national requirements.
2. According to the invention, graphene oxide is made porous in an expansion mode, and a framework is provided for the porous structure of graphene.
3. The invention adopts the conversion of precipitation and dissolution of aluminum ions to ensure the surface dispersibility of the graphene oxide and prevent the agglomeration of particles.
4. The porous graphene powder prepared by the method disclosed by the invention not only can improve the strength of an automobile alloy material, but also can greatly improve the impact resistance strength of the automobile alloy material as a filling material and the compatibility of the automobile alloy material with a resin material, and does not have the problem of easiness in crushing.
Detailed Description
The present invention is described in detail with reference to examples, but the present invention is not limited to the claims.
Example 1
A preparation method of porous graphene powder for automobile alloy materials comprises the following steps:
step 1, adding graphene oxide into absolute ethyl alcohol, then adding polyvinylpyrrolidone, and carrying out ultrasonic stirring until the graphene oxide is completely dispersed to obtain a graphene oxide dispersion liquid;
step 2, adding the graphene oxide dispersion liquid into a sealed reaction kettle, carrying out pressure heating reaction for 1h, and carrying out gradient pressure reduction and temperature reduction reaction to obtain mixed graphene oxide;
step 3, adding the mixed graphene oxide into an aluminum chloride solution, then stirring and introducing ammonia gas until no precipitate is generated, filtering and drying to obtain an aluminum hydroxide coated composite graphene oxide precipitate;
step 4, adding the composite graphene oxide precipitate into an organic solvent for aeration reaction for 1h, and then taking out and drying to obtain a graphene oxide precipitate;
and 5, adding the graphene oxide precipitate into an ethanol water solution, adding an acid solution and tea polyphenol, carrying out ultrasonic reaction for 2 hours to obtain a porous graphene precipitate, and filtering, washing and drying to obtain porous graphene powder.
The concentration of the graphene oxide in the absolute ethyl alcohol in the step 1 is 30g/L, the addition amount of the polyvinylpyrrolidone is 50% of the mass of the graphene oxide, the ultrasonic frequency of the ultrasonic stirring is 20-30kHz, and the temperature is 50 ℃.
The pressure of the pressure heating reaction in the step 2 is 3MPa, and the temperature is 80 ℃.
The procedure of the gradient pressure and temperature reduction reaction of the step 2 is as follows:
| pressure of | Temperature of | Time of day |
| 2MPa | 70℃ | 30min |
| 0.8MPa | 40℃ | 50min |
| 0.4MPa | At room temperature | 30min |
| Atmospheric pressure | At room temperature | 10min |
The concentration of the aluminum chloride in the step 3 is 0.12mo/L, and the concentration of the mixed graphene oxide in water is 5 g/L.
The introduction amount of ammonia gas in the step 3 is 310% of the molar amount of aluminum chloride, and the drying temperature is 50 ℃.
The concentration of the composite graphene oxide in the step 4 in an organic solvent is 30g/L, the organic solvent adopts acetone, the aeration gas of the aeration reaction is nitrogen, the aeration flow rate is 20mL/min, and the drying temperature is 40 min.
The concentration of the graphene oxide precipitate in the step 5 in the ethanol aqueous solution is 20g/L, and the ethanol volume concentration of the ethanol aqueous solution is 50%.
The acid solution in the step 5 is hydrochloric acid solution, the concentration of the hydrochloric acid is 0.001mol/L, the pH is adjusted to 4 by adding the hydrochloric acid solution, the addition amount of the tea polyphenol is 30% of the graphene oxide precipitate, the ultrasonic frequency of the ultrasonic reaction is 40kHz, and the temperature is 70 ℃.
And (5) washing by using absolute ethyl alcohol, wherein the drying temperature is 80 ℃.
Example 2
A preparation method of porous graphene powder for automobile alloy materials comprises the following steps:
step 1, adding graphene oxide into absolute ethyl alcohol, then adding polyvinylpyrrolidone, and carrying out ultrasonic stirring until the graphene oxide is completely dispersed to obtain a graphene oxide dispersion liquid;
step 2, adding the graphene oxide dispersion liquid into a sealed reaction kettle, carrying out pressure heating reaction for 3 hours, and carrying out gradient pressure reduction and temperature reduction reaction to obtain mixed graphene oxide;
step 3, adding the mixed graphene oxide into an aluminum chloride solution, then stirring and introducing ammonia gas until no precipitate is generated, filtering and drying to obtain an aluminum hydroxide coated composite graphene oxide precipitate;
step 4, adding the composite graphene oxide precipitate into an organic solvent for aeration reaction for 3 hours, and then taking out and drying to obtain a graphene oxide precipitate;
and 5, adding the graphene oxide precipitate into an ethanol water solution, adding an acid solution and tea polyphenol, carrying out ultrasonic reaction for 3 hours to obtain a porous graphene precipitate, and filtering, washing and drying to obtain porous graphene powder.
The concentration of the graphene oxide in the absolute ethyl alcohol in the step 1 is 60g/L, the addition amount of the polyvinylpyrrolidone is 70% of the mass of the graphene oxide, the ultrasonic frequency of the ultrasonic stirring is 30kHz, and the temperature is 60 ℃.
The pressure of the pressure heating reaction in the step 2 is 5MPa, and the temperature is 100 ℃.
The procedure of the gradient pressure and temperature reduction reaction of the step 2 is as follows:
| pressure of | Temperature of | Time of day |
| 3MPa | 80℃ | 50min |
| 1MPa | 50℃ | 70min |
| 0.5MPa | At room temperature | 60min |
| Atmospheric pressure | At room temperature | 30min |
The concentration of the aluminum chloride in the step 3 is 0.18mo/L, and the concentration of the mixed graphene oxide in water is 10 g/L.
The introduction amount of ammonia gas in the step 3 is 350% of the molar amount of aluminum chloride, and the drying temperature is 70 ℃.
The concentration of the composite graphene oxide in the step 4 in an organic solvent is 50g/L, the organic solvent adopts ethanol, the aeration gas of the aeration reaction is nitrogen, the aeration flow rate is 40mL/min, and the drying temperature is 50 min.
The concentration of the graphene oxide precipitate in the step 5 in the ethanol aqueous solution is 40g/L, and the ethanol volume concentration of the ethanol aqueous solution is 70%.
The acid solution in the step 5 is hydrochloric acid solution, the concentration of the hydrochloric acid is 0.005mol/L, the pH is adjusted to 5 by adding the hydrochloric acid solution, the adding amount of the tea polyphenol is 60% of the graphene oxide precipitate, the ultrasonic frequency of the ultrasonic reaction is 50kHz, and the temperature is 80 ℃.
And (5) washing by using absolute ethyl alcohol, wherein the drying temperature is 90 ℃.
Example 3
A preparation method of porous graphene powder for automobile alloy materials comprises the following steps:
step 1, adding graphene oxide into absolute ethyl alcohol, then adding polyvinylpyrrolidone, and carrying out ultrasonic stirring until the graphene oxide is completely dispersed to obtain a graphene oxide dispersion liquid;
step 2, adding the graphene oxide dispersion liquid into a sealed reaction kettle, carrying out pressure heating reaction for 2 hours, and carrying out gradient pressure reduction and temperature reduction reaction to obtain mixed graphene oxide;
step 3, adding the mixed graphene oxide into an aluminum chloride solution, then stirring and introducing ammonia gas until no precipitate is generated, filtering and drying to obtain an aluminum hydroxide coated composite graphene oxide precipitate;
step 4, adding the composite graphene oxide precipitate into an organic solvent for aeration reaction for 2 hours, and then taking out and drying to obtain a graphene oxide precipitate;
and 5, adding the graphene oxide precipitate into an ethanol water solution, adding an acid solution and tea polyphenol, carrying out ultrasonic reaction for 3 hours to obtain a porous graphene precipitate, and filtering, washing and drying to obtain porous graphene powder.
The concentration of the graphene oxide in the absolute ethyl alcohol in the step 1 is 50g/L, the addition amount of the polyvinylpyrrolidone is 60% of the mass of the graphene oxide, the ultrasonic frequency of the ultrasonic stirring is 25kHz, and the temperature is 55 ℃.
The pressure of the pressure heating reaction in the step 2 is 4MPa, and the temperature is 90 ℃.
The procedure of the gradient pressure and temperature reduction reaction of the step 2 is as follows:
| pressure of | Temperature of | Time of day |
| 3MPa | 75℃ | 40min |
| 0.9MPa | 45℃ | 60min |
| 0.5MPa | At room temperature | 50min |
| Atmospheric pressure | At room temperature | 20min |
The concentration of the aluminum chloride in the step 3 is 0.16mo/L, and the concentration of the mixed graphene oxide in water is 8 g/L.
The introduction amount of ammonia gas in the step 3 is 340 percent of the molar amount of aluminum chloride, and the drying temperature is 60 ℃.
The concentration of the composite graphene oxide in the step 4 in an organic solvent is 40g/L, the organic solvent adopts methanol, the aeration gas of the aeration reaction is nitrogen, the aeration flow rate is 30mL/min, and the drying temperature is 45 min.
The concentration of the graphene oxide precipitate in the step 5 in an ethanol water solution is 30g/L, and the ethanol volume concentration of the ethanol water solution is 60%.
The acid solution in the step 5 is hydrochloric acid solution, the concentration of the hydrochloric acid is 0.003mol/L, the pH is adjusted to 5 by adding the hydrochloric acid solution, the addition amount of the tea polyphenol is 50% of the graphene oxide precipitate, the ultrasonic frequency of the ultrasonic reaction is 45kHz, and the temperature is 75 ℃.
And (5) washing in the step 5 by using absolute ethyl alcohol, wherein the drying temperature is 85 ℃.
Performance testing
| Example 1 | Example 2 | Example 3 | |
| Specific surface area m2/g | 312 | 423 | 549 |
| Tensile strength MPa | 79 | 89 | 103 |
| Bending strength MPa | 124 | 179 | 245 |
| Notched impact strength J/M | 450 | 467 | 483 |
In summary, the invention has the following advantages:
1. the preparation method is simple and easy to implement, high in stability, free of waste water and waste, high in process environmental protection degree and capable of meeting the national requirements.
2. According to the invention, graphene oxide is made porous in an expansion mode, and a framework is provided for the porous structure of graphene.
3. The invention adopts the conversion of precipitation and dissolution of aluminum ions to ensure the surface dispersibility of the graphene oxide and prevent the agglomeration of particles.
4. The porous graphene powder prepared by the method disclosed by the invention not only can improve the strength of an automobile alloy material, but also can greatly improve the impact resistance strength of the automobile alloy material as a filling material and the compatibility of the automobile alloy material with a resin material, and does not have the problem of easiness in crushing.
It should be understood that the detailed description of the invention is merely illustrative of the invention and is not intended to limit the invention to the specific embodiments described. It will be appreciated by those skilled in the art that the present invention may be modified or substituted equally as well to achieve the same technical result; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (10)
1. A preparation method of porous graphene powder for automobile alloy materials is characterized by comprising the following steps: comprises the following steps:
step 1, adding graphene oxide into absolute ethyl alcohol, then adding polyvinylpyrrolidone, and carrying out ultrasonic stirring until the graphene oxide is completely dispersed to obtain a graphene oxide dispersion liquid;
step 2, adding the graphene oxide dispersion liquid into a sealed reaction kettle, carrying out pressure heating reaction for 1-3 hours, and carrying out gradient pressure reduction and temperature reduction reaction to obtain mixed graphene oxide;
step 3, adding the mixed graphene oxide into an aluminum chloride solution, then stirring and introducing ammonia gas until no precipitate is generated, filtering and drying to obtain an aluminum hydroxide coated composite graphene oxide precipitate;
step 4, adding the composite graphene oxide precipitate into an organic solvent for aeration reaction for 1-3h, and then taking out and drying to obtain a graphene oxide precipitate;
and 5, adding the graphene oxide precipitate into an ethanol water solution, adding an acid solution and tea polyphenol, carrying out ultrasonic reaction for 2-3h to obtain a porous graphene precipitate, and filtering, washing and drying to obtain porous graphene powder.
2. The preparation method of the porous graphene powder for the automobile alloy material according to claim 1, wherein the preparation method comprises the following steps: the concentration of the graphene oxide in the absolute ethyl alcohol in the step 1 is 30-60g/L, the addition amount of the polyvinylpyrrolidone is 50-70% of the mass of the graphene oxide, the ultrasonic frequency of the ultrasonic stirring is 20-30kHz, and the temperature is 50-60 ℃.
3. The preparation method of the porous graphene powder for the automobile alloy material according to claim 1, wherein the preparation method comprises the following steps: the pressure of the pressure heating reaction in the step 2 is 3-5MPa, and the temperature is 80-100 ℃.
4. The preparation method of the porous graphene powder for the automobile alloy material according to claim 1, wherein the preparation method comprises the following steps: the procedure of the gradient pressure and temperature reduction reaction of the step 2 is as follows:
。
5. The preparation method of the porous graphene powder for the automobile alloy material according to claim 1, wherein the preparation method comprises the following steps: the concentration of the aluminum chloride in the step 3 is 0.12-0.18mo/L, and the concentration of the mixed graphene oxide in water is 5-10 g/L.
6. The preparation method of the porous graphene powder for the automobile alloy material according to claim 1, wherein the preparation method comprises the following steps: the introduction amount of ammonia gas in the step 3 is 310-350% of the molar amount of aluminum chloride, and the drying temperature is 50-70 ℃.
7. The preparation method of the porous graphene powder for the automobile alloy material according to claim 1, wherein the preparation method comprises the following steps: the concentration of the composite graphene oxide in the step 4 in an organic solvent is 30-50g/L, the organic solvent adopts one of acetone, ethanol or methanol, the aeration gas of the aeration reaction is nitrogen, the aeration flow rate is 20-40mL/min, and the drying temperature is 40-50 ℃.
8. The preparation method of the porous graphene powder for the automobile alloy material according to claim 1, wherein the preparation method comprises the following steps: the concentration of the graphene oxide precipitate in the step 5 in the ethanol aqueous solution is 20-40g/L, and the ethanol volume concentration of the ethanol aqueous solution is 50-70%.
9. The preparation method of the porous graphene powder for the automobile alloy material according to claim 1, wherein the preparation method comprises the following steps: the acid solution in the step 5 is hydrochloric acid solution, the concentration of the hydrochloric acid is 0.001-0.005mol/L, the pH is adjusted to 4-5 by adding the hydrochloric acid solution, the addition amount of the tea polyphenol is 30-60% of that of the graphene oxide precipitate, the ultrasonic frequency of the ultrasonic reaction is 40-50kHz, and the temperature is 70-80 ℃.
10. The preparation method of the porous graphene powder for the automobile alloy material according to claim 1, wherein the preparation method comprises the following steps: and (5) washing by using absolute ethyl alcohol, wherein the drying temperature is 80-90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810505704.2A CN108584927B (en) | 2018-05-24 | 2018-05-24 | Preparation method of porous graphene powder for automobile alloy material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810505704.2A CN108584927B (en) | 2018-05-24 | 2018-05-24 | Preparation method of porous graphene powder for automobile alloy material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108584927A CN108584927A (en) | 2018-09-28 |
| CN108584927B true CN108584927B (en) | 2020-03-13 |
Family
ID=63628945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810505704.2A Active CN108584927B (en) | 2018-05-24 | 2018-05-24 | Preparation method of porous graphene powder for automobile alloy material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108584927B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102757036B (en) * | 2011-04-26 | 2014-07-23 | 海洋王照明科技股份有限公司 | Preparation method of porous graphene |
| CN102701188B (en) * | 2012-05-07 | 2014-11-12 | 华中科技大学 | Method for preparing three-dimensional porous graphene material by solution |
| CN103449414B (en) * | 2012-05-31 | 2016-12-14 | 海洋王照明科技股份有限公司 | There is the preparation method of the Graphene of loose structure |
| CN105406034A (en) * | 2015-10-27 | 2016-03-16 | 浙江大学 | Three-dimensional porous graphene-supported carbon-coated lithium sulfide cathode material as well as preparation method and application thereof |
| US10995004B2 (en) * | 2016-09-30 | 2021-05-04 | The United States Of America, As Represented By The Secretary, Department Of Health And Human Services | Method for functionalizing carbon nanoparticles and compositions |
-
2018
- 2018-05-24 CN CN201810505704.2A patent/CN108584927B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108584927A (en) | 2018-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102942354B (en) | Preparation method of transparent aerogel | |
| CN108484098B (en) | Normal-pressure preparation method of silicon dioxide/attapulgite fiber composite aerogel | |
| CN106433598B (en) | Preparation method and application of delayed cross-linking agent A agent body and delayed cross-linking agent B agent body for vegetable gum fracturing fluid | |
| CN107177645B (en) | Method for promoting lignocellulose enzymolysis and cooling and recovering cellulase by using amphoteric surfactant | |
| CN112521717A (en) | SiO with high mechanical strength and low heat conductivity coefficient2Preparation method of aerogel composite material | |
| CN114989588B (en) | Degradation material with heat insulation and energy storage properties and preparation method thereof | |
| CN108584927B (en) | Preparation method of porous graphene powder for automobile alloy material | |
| CN110682622A (en) | Aerogel material reinforced by fiber reinforcement and preparation method thereof | |
| CN108424734A (en) | A kind of preparation method of wood-based plate adhesive | |
| CN112625334A (en) | Impact-resistant automobile front wall sound insulation pad and preparation method thereof | |
| CN110124526B (en) | Production method of silicon carbide inorganic ceramic membrane | |
| CN115124760B (en) | Super-hydrophobic chitosan hybrid aerogel and preparation method thereof | |
| CN108249898B (en) | Preparation method of high-performance composite bulletproof plate | |
| CN111363989A (en) | Preparation method of fiber reinforced composite material | |
| CN109439213A (en) | A kind of preparation process for the wood adhesive that adhesive strength is high | |
| CN112724689B (en) | PVB (polyvinyl butyral) membrane with good weather resistance and preparation method thereof | |
| CN103555236A (en) | High-adhesiveness phenol aldehyde composite adhesive and preparation method thereof | |
| CN108163845A (en) | A kind of preparation method of porous graphene material | |
| CN104119488B (en) | The synthetic method of terpolycyantoamino-formaldehyde resin precipitation and the application as amine resin tackiness agent modifying agent thereof | |
| CN112063106A (en) | Epoxy resin light composite material and preparation method thereof | |
| CN112280369A (en) | Environment-friendly printing ink for sound-proof glass and preparation method thereof | |
| CN112500732A (en) | Weather-resistant exterior wall putty powder and preparation method thereof | |
| CN101974191A (en) | Preparation method and application of glass microsphere enhanced polymethacrylimide foam material | |
| CN107163789A (en) | A kind of modified panel solar heat-absorbing paint | |
| CN114311179B (en) | Composite multilayer board for furniture and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |