CN109182828A - A kind of modified graphene brass composite material - Google Patents
A kind of modified graphene brass composite material Download PDFInfo
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- CN109182828A CN109182828A CN201811045338.3A CN201811045338A CN109182828A CN 109182828 A CN109182828 A CN 109182828A CN 201811045338 A CN201811045338 A CN 201811045338A CN 109182828 A CN109182828 A CN 109182828A
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- graphene
- brass
- composite material
- humic acid
- modified graphene
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0084—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ carbon or graphite as the main non-metallic constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a kind of modified graphene brass composite materials, which is characterized in that is prepared by following material: graphene 5-15%, humic acid 1-5%, surplus are brass.Modified graphene brass composite material of the present invention is using graphene and humic acid as the adding ingredient to complement each other, utilize unique morphology design feature possessed by humic acid, it is bonded to each other with graphene, the promotion of graphene dispersion is realized in the case where not destroying the surface morphological structure of graphene.Humic acid has the structure and morphology speciality similar to graphene simultaneously, can assist the performance enhancement that composite material is realized as reinforced phase to a certain extent.
Description
Technical field
The present invention relates to a kind of organic material modified composite material, especially a kind of graphene brass composite material belongs to
Advanced composite material (ACM) technical field.
Background technique
Graphene (graphene) is the plane state carbon material separated from graphite, and graphene has hexagonal lattice, is put down
Each carbon atom is mutually connected on face with sp2 hybridized orbit.Graphene film thickness only has 0.335 nanometer, the carbon in plane
Atom mutually forms space electronic cloud before with big pi bond, and this structure of graphene, which makes it have, breaks through common graphite alkene material
Special performance performance.
The unique advantage performance of graphene is mainly manifested in graphene planes sp2 hybridized orbit connected structure, in graphene
On the direction that plane extends, graphene stability with super strength, while big pi bond makes graphene extending direction have super-hot
Conduction, electronic conductivity energy.If the formation of graphene can be made full use of, it can play and surmount performance, so that conventional
The performance of material is significantly promoted.
But generally require to be stacked between single-layer graphene molecule in the application process of graphene, it is changed into stone
The state of black property, interlayer misplaces, slides the superpower performance so that inside graphene single layer structure after multi-layer graphene stacks
It is difficult to give full play to.
It is thus proposed that be modified processing for graphene, using the flat of strong acid or highly basic partial destruction graphene
Face perfect structure, so that graphene surface forms a certain amount of functional group, using the space steric effect of these functional groups, so that
Stacking phenomenon between graphene molecules is eased, and then gives full play of the superpower performance characteristics of graphene molecules.
But graphene molecules sp2 hybridized orbit itself has good stability, it is necessary to which character of use is extremely active
Strong acid or highly basic processing, so that the destruction on graphene molecules surface is very strong, the damage of graphene molecules surface texture is tight
Weight, performance deterioration.
On the one hand, the dispersion performance of modification enhancing graphene, enables graphene preferably to spread out performance
Performance advantage out；On the other hand, modification will lead to the damage of graphene molecules structure again, reduce the performance of graphene molecules
Advantage.
Summary of the invention
For graphene point during it is an object of the invention to be directed to graphene molecules modification in the prior art
The destruction of minor structure is too strong, is unfavorable for the deficiency that graphene plays its performance advantage as the application of composite material raw material, provides one
Kind modified graphene brass composite material.
In order to achieve the above-mentioned object of the invention, the present invention provides technical solution:
A kind of modified graphene brass composite material is prepared: graphene 5- by the following material of weight percent
15%, humic acid 1-5%, surplus is brass.
Modified graphene brass composite material of the present invention using graphene and humic acid as the adding ingredient to complement each other,
It using unique morphology design feature possessed by humic acid, is bonded to each other with graphene, in the configuration of surface for not destroying graphene
The promotion of graphene dispersion is realized in the case where structure.Humic acid has the structure and morphology speciality similar to graphene simultaneously,
The performance enhancement that composite material is realized as reinforced phase can be assisted to a certain extent.
Humic acid, also known as humic acid, humic acid, humic acid are the larger molecular organics being widely present in a kind of nature
Matter.Humic acid is that animals and plants remains are caused and accumulated by microorganism decomposition and conversion and a series of geochemical processes
A kind of organic substance to get up.The basic structure of humic acid macromolecular is aromatic ring, alicyclic ring, be connected on ring carboxyl, hydroxyl, carbonyl,
The functional groups such as quinonyl, methoxyl group.
Further, in the modified graphene brass composite material, humic acid is used for modified graphene.
Further, the modified graphene brass composite material, is prepared by following material: graphene 6-12%, rotten
Sour 1-4% is grown, surplus is brass.
Further, the modified graphene brass composite material, is prepared by following material: graphene 6-10%, rotten
Sour 1-4% is grown, surplus is brass.
Further, the content of graphene is 6-8%, content of humic acid 2-3%, surplus in the graphene composite material
For brass.
Inventor determines the application adding proportion by optimizing and revising graphene and humic acid through a large number of experiments,
The mutual cooperation that graphene and humic acid can preferably be played reaches performance enhancement effect outstanding, so that graphene
Comprehensive performance is more outstanding.
Further, the brass is H62, H65, H70, H75, H80, H85, H90, H95 brass.
Preferably, the brass is the brass that copper content is 80-96wt%.It is highly preferred that copper content is 92- in brass
96wt%.
It is a further object of the present invention to provide a kind of preparation methods for preparing above-mentioned modified graphene brass composite material, more
Add the comprehensively modifying effect for fully playing out graphene.
It is a kind of to prepare above-mentioned modified graphene composite material and preparation method thereof:
(1) graphene and humic acid are mixed, put into the first solvent, be uniformly mixed, it is dry, obtain graphene and
Humic acid mixture.
(2) brass raw material is taken, under nitrogen protection, step 1 gained graphene and humic acid mixture are added for heating and melting
It into the brass raw material of thawing, is uniformly mixed, obtains modified graphene brass composite material.
By the way that graphene and humic acid to be pre-mixed, come using humic acid by graphene is fully dispersed, then
The mixture of the two is added to the brass of thawing, three's melting mixing is uniform under nitrogen protection, obtains required modified graphite
Alkene brass composite material.Graphene and humic acid pass through in the first solvent is stirred abundant effect, mutually compound uniform, so
Compound action is carried out with the brass of thawing again afterwards, reaches graphene full and uniform dispersion in brass and realizes prominent modified effect
Fruit.
Further, first solvent be water, low mass molecule alcohol, acetone etc. any one or a few.
Preferably, first solvent is water.Solvent is more environmentally-friendly, graphene and the compound later drying process of humic acid
Also easier and safe.
Further, step 1, when being stirred material, using strong stirring.
Preferably, using mechanical stirring, mixing speed >=6000r/min.
Preferably, mixing time 10-60min.It is preferred that 10-30min.
Make graphene fully dispersed in the first solvent by strong stirring, and then can be filled between humic acid
It is allocated as using, so that it is mutual compound more efficient between humic acid and graphene, reach and is effectively improved graphene dispersion state
Effect.
Further, step 2, brass raw material is heated to 1020-1080 DEG C, melts completely, and step 1 gained graphite is then added
Alkene and humic acid mixture, stirring continue melting 10-30min, and furnace cooling obtains modified graphene brass composite material.
Further, step 2, it can also be step 1 gained graphene and the milling dispersion of humic acid mixture, be then added
Brass powder is uniformly mixed, under nitrogen protection, is sintered molding, obtains graphene composite material.
Compared with prior art, beneficial effects of the present invention:
1, modified graphene brass composite material prepared by the present invention is cooperateed with using humic acid and graphene, and preparation is high
The graphene of quality enhances brass composite material, and graphene is by humic acid modified, and whole dispersion performance is strengthened, and not
Damage graphene inherently enhances characteristic, and graphene can give full play to humidification in the composite.
2, modified graphene brass composite material prepared by the present invention, using in advance by graphene and humic acid in the solution
Disperse compound, makes graphene fully dispersed using solution environmental, then be combined with each other with humic acid, reach outstanding product
Matter.It avoids the problem that graphene and humic acid fail sufficiently to combine in the composite to mutually promote.
3, the present invention also provides corresponding preparation methods, it is ensured that the repercussion effect of graphene and humic acid is prominent, reaches
To ideal collaboration facilitation, dispersion enhancing composite material.
Specific embodiment
Below with reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood
It is all that this is belonged to based on the technology that the content of present invention is realized for the scope of the above subject matter of the present invention is limited to the following embodiments
The range of invention.
Embodiment 1
A kind of modified graphene brass composite material, is prepared by following material: graphene 10%, and humic acid 3% is remaining
Amount is brass.
Embodiment 2
A kind of modified graphene brass composite material, is prepared by following material: graphene 15%, and humic acid 5% is remaining
Amount is H85 brass.
Embodiment 3
A kind of modified graphene brass composite material, is prepared by following material: graphene 6%, and humic acid 2% is remaining
Amount is H85 brass.Prepare the modified graphene composite material and preparation method thereof:
(1) graphene and humic acid are mixed, is put into the deionized water of 2 times of weight, 3000r/min is stirred
10min is concentrated to dryness, and obtains graphene and humic acid mixture.
(2) brass raw material is taken, under nitrogen protection, step 1 gained graphene and humic acid mixture are added for heating and melting
It into the brass raw material of thawing, is uniformly mixed, continues melting 20min.Then furnace cooling obtains modified graphene brass
Composite material.
Embodiment 4
A kind of modified graphene brass composite material, is prepared by following material: graphene 10%, and humic acid 3% is remaining
Amount is H85 brass.The method for preparing the modified graphene composite material is as follows:
(1) graphene and humic acid are mixed, is put into the deionized water of 2 times of weight, 3000r/min is stirred
10min is concentrated to dryness, and obtains graphene and humic acid mixture.
(2) brass raw material is taken, 1100 DEG C is heated to and melts, under nitrogen protection, by step 1 gained graphene and humic acid-mixed
It closes material to be added in the brass raw material of thawing, be uniformly mixed, continue melting 10min.Then furnace cooling obtains modified stone
Black alkene brass composite material.
Embodiment 5
A kind of modified graphene brass composite material, is prepared by following material: graphene 10%, and humic acid 3% is remaining
Amount is H85 brass.The method for preparing the modified graphene composite material is as follows:
(1) graphene and humic acid are mixed, is put into the deionized water of 2 times of weight, 3000r/min is stirred
10min is concentrated to dryness, and obtains graphene and humic acid mixture.
(2) brass raw material is taken, 1100 DEG C is heated to and melts, under nitrogen protection, by step 1 gained graphene and humic acid-mixed
It closes material to be added in the brass raw material of thawing, be uniformly mixed, continue melting 20min.Then furnace cooling obtains modified stone
Black alkene brass composite material.
Embodiment 6
A kind of modified graphene brass composite material, is prepared by following material: graphene 8%, and humic acid 3% is remaining
Amount is H95 brass.The method for preparing the modified graphene composite material is as follows:
(1) graphene and humic acid are mixed, is put into the deionized water of 2 times of weight, 3000r/min is stirred
10min is concentrated to dryness, and obtains graphene and humic acid mixture.
(2) brass raw material is taken, 1100 DEG C is heated to and melts, under nitrogen protection, by step 1 gained graphene and humic acid-mixed
It closes material to be added in the brass raw material of thawing, be uniformly mixed, continue melting 20min.Then furnace cooling obtains modified stone
Black alkene brass composite material.
Embodiment 7
A kind of modified graphene brass composite material, is prepared by following material: graphene 8%, and humic acid 2% is remaining
Amount is H95 brass.The method for preparing the modified graphene composite material is as follows:
(1) graphene and humic acid are mixed, is put into the 80v% ethyl alcohol of 3 times of weight, 3000r/min is stirred
10min is concentrated to dryness, and obtains graphene and humic acid mixture.
(2) brass raw material is taken, 1100 DEG C is heated to and melts, under nitrogen protection, by step 1 gained graphene and humic acid-mixed
It closes material to be added in the brass raw material of thawing, be uniformly mixed, continue melting 15min, it is compound to obtain modified graphene brass
Material.
Embodiment 8
A kind of modified graphene brass composite material, is prepared by following material: graphene 8%, and humic acid 2% is remaining
Amount is H95 brass.The method for preparing the modified graphene composite material is as follows:
(1) graphene and humic acid are mixed, is put into the 80v% ethyl alcohol of 3 times of weight, 3000r/min is stirred
30min is concentrated to dryness, and obtains graphene and humic acid mixture.
(2) brass raw material is taken, 1100 DEG C is heated to and melts, under nitrogen protection, by step 1 gained graphene and humic acid-mixed
It closes material to be added in the brass raw material of thawing, be uniformly mixed, continue melting 12min, it is compound to obtain modified graphene brass
Material.
Embodiment 9
A kind of modified graphene brass composite material, is prepared by following material: graphene 8%, and humic acid 2% is remaining
Amount is H95 brass.The method for preparing the modified graphene composite material is as follows:
(1) graphene and humic acid are mixed, is put into the 80v% ethyl alcohol of 3 times of weight, 6000r/min is stirred
15min is concentrated to dryness, and obtains graphene and humic acid mixture.
(2) brass raw material is taken, 1100 DEG C is heated to and melts, under nitrogen protection, by step 1 gained graphene and humic acid-mixed
It closes material to be added in the brass raw material of thawing, be uniformly mixed, continue melting 12min, it is compound to obtain modified graphene brass
Material.
Embodiment 10
A kind of modified graphene brass composite material, is prepared by following material: graphene 8%, and humic acid 2% is remaining
Amount is H95 brass.The method for preparing the modified graphene composite material is as follows:
(1) graphene and humic acid are mixed, is put into the 80v% ethyl alcohol of 3 times of weight, 6000r/min is stirred
15min is concentrated to dryness, and obtains graphene and humic acid mixture.
(2) by step 1 gained graphene and the milling dispersion of humic acid mixture, brass powder is then added, is uniformly mixed,
Under nitrogen protection, 1100 DEG C are heated to, 10min is kept the temperature, sinter molding obtains modified graphene composite material.
Comparative example 1
A kind of graphene brass composite material, by the graphene 8% and H95 brass powder 92% of weight percent, mixing
Uniformly, under nitrogen protection, with being heated to 1100 DEG C, 10min is kept the temperature, sinter molding obtains graphene composite material.
Comparative example 2
A kind of graphene brass composite material weighs humic acid 3% and H95 brass powder 97% by weight percentage, will
Humic acid milling, is then uniformly mixed with brass powder, under nitrogen protection, with being heated to 1100 DEG C, keeps the temperature 10min, sinters into
Type obtains graphene composite material.
Test
Above-described embodiment 2-10 and comparative example 1-2 composite material prepared is tested, the tensile strength of material is detected
MPa, thermal coefficient/W (mK)-1, result it is as follows:
1 test result of table
| Tensile strength/MPa | Thermal coefficient/W (mK)-1 | |
| Brass H85 | 312 | 152 |
| Brass H95 | 320 | 234 |
| Embodiment 2 | 320 | 171 |
| Embodiment 3 | 326 | 162 |
| Embodiment 4 | 321 | 165 |
| Embodiment 5 | 325 | 169 |
| Embodiment 6 | 328 | 255 |
| Embodiment 7 | 334 | 251 |
| Embodiment 8 | 333 | 251 |
| Embodiment 9 | 341 | 274 |
| Embodiment 10 | 340 | 281 |
| Comparative example 1 | 305 | 233 |
| Comparative example 2 | 298 | 212 |
Graphene provided by the invention enhances brass composite material, real by sufficiently combining modified graphene and brass
Existing good humidification has different degrees of improvement to be promoted brass tensile strength and thermal coefficient, for H85 and
H95 brass raw material is made after composite material, and tensile strength has certain promotion, and the thermal coefficient of material also have it is biggish
Improve.Graphene enhancing composite material of the present invention is expected to substitution basis brass and uses as reinforcing material.
Claims (10)
1. a kind of modified graphene brass composite material, which is characterized in that be prepared by the following material of weight percent: stone
Black alkene 5-15%, humic acid 1-5%, surplus are brass.
2. modified graphene brass composite material as described in claim 1, which is characterized in that the modified graphene brass is compound
In material, humic acid is used for modified graphene.
3. modified graphene brass composite material as described in claim 1, which is characterized in that the modified graphene brass is compound
Material is prepared by the following material of weight percent: graphene 6-12%, humic acid 1-4%, surplus are brass.
4. modified graphene brass composite material as described in claim 1, which is characterized in that the modified graphene brass is compound
Material is prepared by the following material of weight percent: graphene 6-10%, humic acid 1-4%, surplus are brass.
5. modified graphene brass composite material as described in claim 1, which is characterized in that the graphene brass composite material
The content of middle graphene is 6-8%, and content of humic acid 2-3%, surplus is brass.
6. modified graphene brass composite material as described in claim 1, which is characterized in that the brass be H62, H65, H70,
H75, H80, H85, H90, H95 brass.
7. modified graphene brass composite material as described in claim 1, which is characterized in that the brass is that copper content is 80-
The brass of 96wt%.
8. modified graphene brass composite material as claimed in claim 7, which is characterized in that copper content is 92- in the brass
96wt%。
9. modified graphene brass composite material as described in claim 1, which is characterized in that the modified graphene composite material
It is prepared by the following method:
(1) graphene and humic acid are mixed, puts into the first solvent, is uniformly mixed, it is dry, obtain graphene and humic
Sour mixture；
(2) brass raw material is taken, step 1 gained graphene and humic acid mixture under nitrogen protection, are added to and are melted by heating and melting
It in the brass raw material of change, is uniformly mixed, obtains modified graphene brass composite material.
10. modified graphene brass composite material as claimed in claim 9, in step 1, first solvent is water, low molecule
Alcohol, acetone etc. any one or a few.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811045338.3A CN109182828A (en) | 2018-09-07 | 2018-09-07 | A kind of modified graphene brass composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811045338.3A CN109182828A (en) | 2018-09-07 | 2018-09-07 | A kind of modified graphene brass composite material |
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| Publication Number | Publication Date |
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| CN109182828A true CN109182828A (en) | 2019-01-11 |
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ID=64915580
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811045338.3A Withdrawn CN109182828A (en) | 2018-09-07 | 2018-09-07 | A kind of modified graphene brass composite material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436933A (en) * | 2019-08-26 | 2019-11-12 | 中南大学 | A kind of TiB used for aluminium electrolysis2Graphene composite cathode material and preparation method thereof |
-
2018
- 2018-09-07 CN CN201811045338.3A patent/CN109182828A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436933A (en) * | 2019-08-26 | 2019-11-12 | 中南大学 | A kind of TiB used for aluminium electrolysis2Graphene composite cathode material and preparation method thereof |
| CN110436933B (en) * | 2019-08-26 | 2021-11-05 | 中南大学 | TiB for aluminum electrolysis2-graphene composite cathode material and preparation method thereof |
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Application publication date: 20190111 |