CN103623719A - Method for dispersing carbon nanotubes in suspension - Google Patents
Method for dispersing carbon nanotubes in suspension Download PDFInfo
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- CN103623719A CN103623719A CN201310697561.7A CN201310697561A CN103623719A CN 103623719 A CN103623719 A CN 103623719A CN 201310697561 A CN201310697561 A CN 201310697561A CN 103623719 A CN103623719 A CN 103623719A
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Abstract
The invention relates to carbon nanotubes and in particular relates to a method for dispersing carbon nanotubes in a suspension. The method comprises the following steps: firstly preparing a high-concentration carbon nanotube aqueous suspension with sodium dodecyl benzene sulfonate (SDBS) as a surfactant; swelling the suspension at a room temperature and stirring the suspension at a constant temperature under the action of a magnetic stirrer; then applying high-frequency ultrasonic oscillation along the orthogonal direction of rotation of a magnetic field and lasting for 0.5-1 hour, thus obtaining the uniformly and stably dispersed carbon nanotube solution. The method is simple in operation process, conduces to obviously improving the dispersibility of the carbon nanotubes and creates conditions for applying the carbon nanotubes to other materials and technical fields.
Description
Technical field
The present invention relates to CNT, refer in particular to a kind of in suspension the method for dispersing Nano carbon tubes.
Background technology
CNT (CNTs) is a kind of important material, due to its unique structure and performance, at present CNT be used as one independently application studied; From current present situation, no matter be that home or overseas is all studied at the process for dispersing to CNT.
From current domestic research, report to be no lack of this type of research and patent of invention; Be mainly from high-energy ball milling, grinding and stirring, ultrasonic wave process, strong acid washing, with the methods such as surfactant and several different methods Integrated using break up CNT aggregate, cut short long CNT, maintenance carbon nanotube dispersed state to be to reach the uniform and stable CNT that minute sheds.
According to applicant, fully retrieve, the typical patent of research invention carbon nano tube dispersion method mainly exists following several at present: 1, open (bulletin) number is: the patent of CN101049926, this patent exploitation freeze-drying divides the carbon nanotube powder that sheds, although this method is simple to operate, dispersion effect is comparatively obvious, but has the defect such as long consuming time; 2, open (bulletin) number is: the patent of CN102172488A, this patent about dispersing Nano carbon tubes in concrete to its effect, this method is for dispersing Nano carbon tubes/nanofiber, in concrete, to damage structure and the physical property of carbon nanotube/nano fiber, and the method that adopts dispersant affects the problem of concrete hydrating and mechanical property, do not there is generality; 3, open (bulletin) number is the patent of CN101485962, and its dispersing Nano carbon tubes method is, make CNT carry out sonic oscillation at polysaccharose substance, though this method is with low cost pollution-free, it is not very high dividing the CNT proportion in solution shedding, and is confined to polysaccharose substance; 4, publication number is: the patent of CN103196969A, and this patent relates to the CNT of preparing Aspartame functional modification, and method is simple, but applies singlely, and the CNT of dispersant functionalization is limited to modified electrode successful.
In addition, abroad also there is the method etc. of dispersing Nano carbon tubes in polymer substrate of patent, though this method can limit the size of aggregation, can not prevent the formation of aggregation completely, nano level dispersed to obtain.
Patent of the present invention adopts chemical method to combine and make for dispersing Nano carbon tubes with Physical, be that association list surface-active agent and the vibration of high-energy ultrasonic magnetic Field Coupling disperse CNT, not only method of operating is simple, technique is consuming time shorter, and can significantly improve the dispersive property of CNT, eliminate large reunion, the carbon pipe after dispersion can be applied every field scientific research, has expanded the application prospect of carbon pipe.
Summary of the invention
The object of this invention is to provide a kind of in suspension the method for dispersing Nano carbon tubes.
The method of dispersing Nano carbon tubes of the present invention, its step is as follows:
1) by carbon nanotube dispersed in certain density surfactant solution, form the stable suspension of high concentration.
2) suspension is placed in at room temperature swelling, and stirs under the effect of magnetic stirring apparatus.
3) associating magnetic stirring apparatus and high-energy ultrasonic generator, apply sound magnetic coupling field oscillation treatment, obtains the uniform and stable dispersion liquid of CNT.
In step (1), described surfactant is neopelex carbon (SDBS), and surfactant solution concentration is 1.5-3mol/L, and the addition of CNT is that every liter of surfactant solution adds 15-20g CNT.
Step 2) magnetic stirrer electric current 1.5-3A in, swelling time 10-30min.
In step (3), the concussion of sound magnetic coupling field is treated to: supersonic generator is stirred to orthogonal direction (stirring the axial of magnetic field rotating) simultaneously along magnetic field and carry out sonic oscillation, coupling parameter is: sonic oscillation power is 2-4KW, and frequency is: 20MHz; Magnetic stirrer electric current 1.5-3A; The coupling processing time is 0.5-1 hour.
Beneficial effect of the present invention is:
Method of operating is simple, duration is shorter, the dispersiveness of the CNT of processing through the present invention significantly improves, nowhere large reunion in aaerosol solution, and the carbon pipe after disperseing can be applied every field scientific research, expand the application prospect of carbon pipe, for CNT is applied to other association areas, created condition.
The specific embodiment
Embodiment 1:
A kind of method that SWCN disperses in suspension is as follows:
1, get SWCN 1g; Put it in the neopelex that 50ml concentration is 1.5mol/L (SDBS) solution, prepare CNT water slurry.
2, swelling at room temperature, and under the effect of magnetic stirring apparatus, stir magnetic stirrer electric current 3A, time 10min.
3, supersonic generator is stirred to orthogonal direction along magnetic field and carry out sonic oscillation, sonic oscillation power is 4KW, and frequency is 20MHz, magnetic stirrer electric current 3A, and sound magnetic coupling continues 0.5 hour, finally obtains the CNT aaerosol solution that is uniformly dispersed stable.
Embodiment 2:
The method that multi-walled carbon nano-tubes disperses in suspension:
1, get SWCN 1g; Put it in the neopelex that 66.67ml concentration is 1.5mol/L (SDBS) solution, prepare CNT water slurry.
2, swelling at room temperature, and under the effect of magnetic stirring apparatus, stir magnetic stirrer electric current 1.5A, time 30min.
3, supersonic generator is stirred to orthogonal direction along magnetic field and carry out sonic oscillation, high-energy ultrasonic hunting power is 2KW, and frequency is: 20MHz; Magnetic stirrer electric current 1.5A, sound magnetic coupling continues 1 hour, finally obtains the CNT aaerosol solution that is uniformly dispersed stable.
Embodiment 3:
The method that multi-walled carbon nano-tubes disperses in suspension:
1, get SWCN 1g; Put it in the neopelex that 55.56ml concentration is 3mol/L (SDBS) solution, prepare CNT water slurry.
2, swelling at room temperature, and under the effect of magnetic stirring apparatus, stir magnetic stirrer electric current 3A, time 10min.
3, supersonic generator is prolonged to magnetic field stirring orthogonal direction and carry out sonic oscillation, high-energy ultrasonic hunting power is 2KW, and frequency is: 20MHz; Magnetic stirrer electric current 3A, sound magnetic coupling continues 45min, finally obtains the CNT aaerosol solution that is uniformly dispersed stable.
Claims (4)
1. a method for dispersing Nano carbon tubes in suspension, is characterized in that comprising the steps:
1) by carbon nanotube dispersed in certain density surfactant solution, form the stable suspension of high concentration;
2) suspension is placed in at room temperature swelling, and stirs under the effect of magnetic stirring apparatus;
3) associating magnetic stirring apparatus and high-energy ultrasonic generator, apply sound magnetic coupling field oscillation treatment, obtains the uniform and stable dispersion liquid of CNT.
As claimed in claim 1 a kind of in suspension the method for dispersing Nano carbon tubes, it is characterized in that: in step (1), described surfactant is neopelex carbon (SDBS), surfactant solution concentration is 1.5-3mol/L, and the addition of CNT is that every liter of surfactant solution adds 15-20g CNT.
As claimed in claim 1 a kind of in suspension the method for dispersing Nano carbon tubes, it is characterized in that: step 2) in magnetic stirrer electric current 1.5-3A, swelling time 10-30min.
As claimed in claim 1 a kind of in suspension the method for dispersing Nano carbon tubes, it is characterized in that: in step (3), the concussion of sound magnetic coupling field is treated to: supersonic generator is stirred to orthogonal direction (stirring the axial of magnetic field rotating) simultaneously along magnetic field and carry out sonic oscillation, coupling parameter is: sonic oscillation power is 2-4KW, and frequency is: 20MHz; Magnetic stirrer electric current 1.5-3A; The coupling processing time is 0.5-1 hour.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310697561.7A CN103623719B (en) | 2013-12-18 | 2013-12-18 | A kind of method of dispersing Nano carbon tubes in suspension |
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| CN201310697561.7A CN103623719B (en) | 2013-12-18 | 2013-12-18 | A kind of method of dispersing Nano carbon tubes in suspension |
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| CN103623719A true CN103623719A (en) | 2014-03-12 |
| CN103623719B CN103623719B (en) | 2016-04-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591125A (en) * | 2014-12-30 | 2015-05-06 | 广州聚能生物科技有限公司 | Method for dispersing one-dimensional or two-dimensional nanometer material |
| CN104722219A (en) * | 2014-09-03 | 2015-06-24 | 青岛科技大学 | Carbon nano tube dispersion method |
| CN104923095A (en) * | 2015-06-11 | 2015-09-23 | 长沙理工大学 | Physical dispersing method for carbon nano-tube |
| CN111606318A (en) * | 2019-02-22 | 2020-09-01 | 河南大学 | Method for deagglomerating and dispersing carbon nanotubes mechanically by wet method |
-
2013
- 2013-12-18 CN CN201310697561.7A patent/CN103623719B/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 王乾乾等: "正交试验法分散碳纳米管的初步研究", 《西部皮革》, 29 February 2012 (2012-02-29) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104722219A (en) * | 2014-09-03 | 2015-06-24 | 青岛科技大学 | Carbon nano tube dispersion method |
| CN104722219B (en) * | 2014-09-03 | 2017-11-14 | 青岛科技大学 | A kind of carbon nano tube dispersion method |
| CN104591125A (en) * | 2014-12-30 | 2015-05-06 | 广州聚能生物科技有限公司 | Method for dispersing one-dimensional or two-dimensional nanometer material |
| CN104923095A (en) * | 2015-06-11 | 2015-09-23 | 长沙理工大学 | Physical dispersing method for carbon nano-tube |
| CN111606318A (en) * | 2019-02-22 | 2020-09-01 | 河南大学 | Method for deagglomerating and dispersing carbon nanotubes mechanically by wet method |
| CN111606318B (en) * | 2019-02-22 | 2023-06-30 | 河南大学 | Method for dispersing carbon nano tube by wet method mechanical deagglomeration |
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| CN103623719B (en) | 2016-04-20 |
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Granted publication date: 20160420 Termination date: 20181218 |