CN105712334A - Viscous graphene stripping combined solution - Google Patents
Viscous graphene stripping combined solution Download PDFInfo
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- CN105712334A CN105712334A CN201410711052.XA CN201410711052A CN105712334A CN 105712334 A CN105712334 A CN 105712334A CN 201410711052 A CN201410711052 A CN 201410711052A CN 105712334 A CN105712334 A CN 105712334A
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Abstract
The invention discloses a viscous graphene stripping combined solution. The combined solution comprises the following components by weight: 100 parts of water, 30-100 parts of an alcoholic solvent, 50-80 parts of polyacrylic ester or polyacrylic ester derivative, and 0.5-5 parts of a water soluble salt. According to the invention, polyacrylic ester or polyacrylic ester derivative with glue adhesiveness is added into the combined solution, the combined solution can be used in coordination with grinding or stirring so as to reduce the requirement for grinding or stirring speed, and stripping of graphene can be realized without ultra high-speed shearing to a flake graphite layer. In addition, the water soluble salt added into the system can improve the conductivity of the system, superimposition of stripped graphene together again due to static electricity can be avoided, and a disperse state after stripping can be maintained. The combined solution can strip graphene, and at the same time has no corrosion to equipment and causes no damage to the graphene structure.
Description
Technical field
The present invention relates to Graphene production technical field, being specifically related to a kind of for graphite being peeled off the combination liquid for Graphene.
Background technology
Graphene is a kind of two-dimensional material with good flexibility, electrical property.You need to add is that, stricti jurise is said, Graphene is the lamellar of a kind of monolayer；But due to the preparation difficulty of single-layer graphene, generally also the form the few-layer graphene alkene with similar performance is also ranged in the category of Graphene.
At present, the method that prepared by Graphene mainly has: chemically grown method and physics stripping method.Low compared to efficiency, be not suitable for the chemically grown method of industrialized mass production; it is raw material that physics stripping method mainly adopts cheap graphite; make graphite layers peeling-off by graphite crystal is applied mechanical force; break the Van der Waals force of graphite layers; forming monolithic graphite alkene or form the few-layer graphene alkene, this physical separation methods has more industrial prospect and applicable large-scale production.
In Graphene stripping process, it is necessary to add some auxiliary agents, to increase the interlayer distance of graphite or so-called intercalation, so that graphite is peeled off better.As adopted nitric acid, potassium permanganate, chromic acid or hydrogen peroxide as oxidant, concentrated sulphuric acid, as intercalator, introduces the oxy radicals such as hydroxyl, epoxide group and carboxyl at graphite layers or edge, increase graphite layers from, be beneficial to follow-up graphite layers and peel off.But this chemical substance intercalated technique acid consumption is big, production process has the pollution of the harmful gass such as SOx, NOx or heavy metal ion, product there is sulfur remain, the Graphene finally given is easily generated defect, and in the application equipment there is is corrosion, reduce the service life of equipment, add production cost.
Summary of the invention
It is an object of the invention to overcome the defect existed in prior art, it is provided that a kind of viscosity Graphene peels off combination liquid, and this combination liquid cooperative mechanical is ground, it is possible to be efficiently peeled off graphite, and the structural deterioration of Graphene is little.
For realizing the purpose of the present invention, the technical scheme is that a kind of viscosity Graphene peels off combination liquid, the composition of this combination liquid includes:
100 parts of water,
Alcohols solvent 30～100 parts,
Polyacrylate or polyacrylate derivatives 50～80 parts,
Water soluble salt 0.5～5 part；
Wherein, each component is in its parts by weight.
Preferred technical scheme is, described alcohols solvent is one or more in ethanol, normal propyl alcohol, n-butyl alcohol, propylene glycol and terpineol.
Preferred technical scheme is, the number-average molecular weight of described polyacrylate or polyacrylate derivatives is more than 100000.
Preferred technical scheme is, described water soluble salt is the one in lithium fluoride, sodium fluoride, sodium chloride, lithium chloride.
Prior art is compared, Graphene of the present invention peels off combination liquid by adding polyacrylate or the polyacrylate derivatives with glue viscosity in combination liquid, use this combination liquid to coordinate to grind or stirring, the requirement to grinding or mixing speed can be reduced, it is not necessary to graphite flake layer ultra high shear can be realized the stripping to Graphene；It addition, the water soluble salt added in system can improve the electric conductivity of system, it is to avoid the Graphene of stripping, because electrostatic is superimposed together again, keeps the dispersity after peeling off.This combination liquid is being peeled off while Graphene, and not etching apparatus does not damage graphene-structured.
Detailed description of the invention
Below in conjunction with embodiment, the specific embodiment of the present invention is further described.Following example are only for clearly illustrating technical scheme, and can not limit the scope of the invention with this.
Embodiment 1
The present invention is that a kind of viscosity Graphene peels off combination liquid, and the composition of this combination liquid includes: water 100 parts by weight, ethanol 30 parts by weight, polyacrylate 50 parts by weight, lithium fluoride 0.5 parts by weight.Wherein, the number-average molecular weight of polyacrylate is more than 100000.
Embodiment 2
The present invention is that a kind of viscosity Graphene peels off combination liquid, and the composition of this combination liquid includes: water 100 parts by weight, ethanol 40 parts by weight, normal propyl alcohol 20 parts by weight, polyurethane-modified polyacrylate 80 parts by weight, sodium fluoride 2 parts by weight.Wherein, the number-average molecular weight of polyurethane-modified polyacrylate is more than 100000.
Embodiment 3
The present invention is that a kind of viscosity Graphene peels off combination liquid, and the composition of this combination liquid includes: water 100 parts by weight, n-butyl alcohol 40 parts by weight, propylene glycol 40 parts by weight, polyurethane-modified polyacrylate 60 parts by weight, sodium chloride 4 parts by weight.Wherein, the number-average molecular weight of polyurethane-modified polyacrylate is more than 100000.
Embodiment 4
The present invention is that a kind of viscosity Graphene peels off combination liquid, and the composition of this combination liquid includes: water 100 parts by weight, terpineol 100 parts by weight, polyacrylate 70 parts by weight, lithium chloride 5 parts by weight.Wherein, the number-average molecular weight of polyacrylate is more than 100000.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the technology of the present invention principle; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (4)
1. a viscosity Graphene peels off combination liquid, it is characterised in that the composition of this combination liquid includes:
100 parts of water,
Alcohols solvent 30～100 parts,
Polyacrylate or polyacrylate derivatives 50～80 parts,
Water soluble salt 0.5～5 part；
Wherein, each component is in its parts by weight.
2. viscosity Graphene as claimed in claim 1 peels off combination liquid, it is characterised in that described alcohols solvent is one or more in ethanol, normal propyl alcohol, n-butyl alcohol, propylene glycol and terpineol.
3. viscosity Graphene as claimed in claim 1 peels off combination liquid, it is characterised in that the number-average molecular weight of described polyacrylate or polyacrylate derivatives is more than 100000.
4. viscosity Graphene as claimed in claim 1 peels off combination liquid, it is characterised in that described water soluble salt is the one in lithium fluoride, sodium fluoride, sodium chloride, lithium chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410711052.XA CN105712334A (en) | 2014-12-01 | 2014-12-01 | Viscous graphene stripping combined solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410711052.XA CN105712334A (en) | 2014-12-01 | 2014-12-01 | Viscous graphene stripping combined solution |
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| Publication Number | Publication Date |
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| CN105712334A true CN105712334A (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410711052.XA Pending CN105712334A (en) | 2014-12-01 | 2014-12-01 | Viscous graphene stripping combined solution |
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| CN (1) | CN105712334A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106589903A (en) * | 2016-12-09 | 2017-04-26 | 四川大学 | Preparation method and application of graphene polyurethane nanocomposite |
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2014
- 2014-12-01 CN CN201410711052.XA patent/CN105712334A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106589903A (en) * | 2016-12-09 | 2017-04-26 | 四川大学 | Preparation method and application of graphene polyurethane nanocomposite |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160629 |