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Method for preparing carbonaceous nano tube viscoelastic fluid

A carbon nanotube and viscoelasticity technology, applied in the field of new material preparation, can solve the problem of not being able to keep carbon nanotubes at the same time, achieve good stability and improve the effect of critical concentration

Inactive Publication Date: 2009-04-29
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the problem that the existing technology cannot maintain the good dispersion of carbon nanotubes and the viscoelasticity of the dispersion system at the same time, the purpose of the present invention is to provide a method for preparing a viscoelastic fluid containing carbon nanotubes. The viscoelastic fluid containing carbon nanotubes prepared by the method is In the worm-like micellar system, carbon nanotubes can be well dispersed, and the mixed system has considerable viscoelasticity

Method used

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  • Method for preparing carbonaceous nano tube viscoelastic fluid
  • Method for preparing carbonaceous nano tube viscoelastic fluid
  • Method for preparing carbonaceous nano tube viscoelastic fluid

Examples

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Embodiment 1

[0034] Embodiment 1: selected fatty acid is lauric acid (LA), and quaternary ammonium alkali cationic surfactant is tetradecyltrimethylammonium hydroxide (TTAOH), and the mol ratio of LA and TTAOH is 0.825, and surfactant total concentration The content of carbon nanotubes in the target sample is 0.8mg / mL, the content of polyvinylpyrrolidone is 10mg / mL, and the carbon nanotubes used are a mixture of single-walled and multi-walled carbon nanotubes, wherein the single-walled carbon nanotubes The tube content is about 50%, and the total content of impurities, including catalysts and amorphous carbon, etc., does not exceed 7%. Its Raman spectrum and transmission electron microscope photos are as follows figure 2 and image 3 shown.

Embodiment 2

[0035] Example 2: On the basis of Example 1, reduce the content of polyvinylpyrrolidone in the target sample, and adjust it to 8mg / mL, 6mg / mL, 4mg / mL and 2mg / mL in turn. With the decrease of polyvinylpyrrolidone content, the viscoelasticity of the mixed system is getting closer and closer to the situation without polyvinylpyrrolidone, such as Figure 4 and Figure 5 shown. However, the system still has a good ability to disperse carbon nanotubes. Sample photos and Raman spectra of typical samples are shown in Figure 6 and Figure 7 middle.

Embodiment 3

[0036] Example 3: On the basis of Example 1, increase the total concentration of surfactants in the target sample and adjust to 20mg / mL, 25mg / mL, 30mg / mL, 40mg / mL and 50mg / mL in turn.

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Abstract

The invention discloses a preparation method for carbonic nanotube viscoelastic fluid, which uniformly disperses carbonic nanotubes in a viscoelastic vermiculate micellar system formed by an anion / cation surface active agent under the dispersive function of a polymer to the carbonic nanotube and with the help of ultrasound and the like external forces. The carbonic nanotubes of the carbonic nanotube viscoelastic fluid prepared by the method can achieve favorable dispersion, and the mixed system has considerable viscoelasticity. The dispersion degree of the carbonic nanotubes and the viscoelasticity of the mixed system can be conveniently adjusted by changing the varieties, the mixing proportion and the total concentration of the surface active agent, the addition amount of the polymer and the like, thus meeting the requirements of practical application on various occasions.

Description

technical field [0001] The invention relates to a preparation method of a carbon nanotube-containing composite material; in particular, it relates to a preparation method of a carbon nanotube-containing viscoelastic fluid, which belongs to the field of new material preparation. Background technique [0002] The worm-like micelle system formed by surfactant molecules is an important class of viscoelastic fluids, which has important application value in oil fields, rent reduction of hot and cold fluids in communities, thickening of personal care and household cleaning products, and many other fields. There are many surfactants that can be used to construct worm-like micellar systems, such as sodium dodecylsulfonate / lauryl alcohol / water system, cetyltrimethylammonium bromide / sodium salicylate / water system and Cetyltrimethylammonium p-toluenesulfonate / sodium dodecylbenzenesulfonate / water system, etc. Among them, the research on the formation, properties and application of worm-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 郝京诚李洪光宋爱新
Owner SHANDONG UNIV
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