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Hyperdispersant for carbon nanotubes and manufacturing method thereof

A technology of hyperdispersant and carbon nanotubes, which is applied in the treatment of dyed polymer organic compounds, fibrous fillers, etc., can solve the problems of reduced compression resistance and wear resistance, large pollution, high cost, etc., and achieve stable dispersion performance. , High product yield, good environmental performance

Inactive Publication Date: 2013-05-08
LIANYUNGANG TIANLIRUN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a stable color paste can be obtained in this way, represented by sacrificing the surface structure, the tube walls cannot be arranged in an orderly manner, conduct electricity, and the electromagnetic properties are greatly reduced, and the compressive resistance and wear resistance are reduced by at least 80%.
[0003] There are domestic published patent literatures that use ultrasound, electromagnetic force or differential thermal convection methods to force CNTs to be effectively oriented, so as to achieve the effect of dispersion and stability. The flocculation between itself will quickly make it lose its dispersion stability, and it is difficult to obtain a high-concentration CNT dispersion by this method
However, the manufacturing process of this type of dispersant is extremely complicated, expensive and polluting

Method used

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  • Hyperdispersant for carbon nanotubes and manufacturing method thereof
  • Hyperdispersant for carbon nanotubes and manufacturing method thereof
  • Hyperdispersant for carbon nanotubes and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1, a kind of hyperdispersant for carbon nanotube, its general formula is as follows:

[0035]

[0036] In the formula:

[0037] R 1 is hydrogen, alkyl, alkoxyalkyl, hydroxyalkoxyalkyl;

[0038] A is methyl, carbonyl; A connected to the same benzene ring is the ortho, para or meta position of the benzene ring;

[0039] R 2 is alkyl, alkoxy, phenoxy;

[0040] R 3 is hydrogen, methyl;

[0041] B: for O-CH 2 CH 2 -O, (O-CH 2 CH) a -O, NHCH 2 CH 2 NH, (NHCH 2 CH 2 ) b -NH, B is the bridge connection part between the anchor part and the unfolding chain part;

[0042] The extended chain part is ethylene oxide homopolymer, propylene oxide polymer, ethylene oxide / propylene oxide copolymer, linear polyester, nonlinear polyester;

[0043] The molecular weight ratio of the anchor part and the extended chain part is 1:1-1:100;

[0044] Both m and n are positive integers of 1-50. ,

Embodiment 2

[0045] Example 2, in the hyperdispersant for carbon nanotubes described in Example 1: the anchoring part in the general formula is a polyether containing a benzene ring, or a polyester containing a benzene ring.

Embodiment 3

[0046] Embodiment 3, a kind of preparation method for the hyperdispersant of carbon nanotube as described in embodiment 1 or 2, its steps are as follows:

[0047] (1) Put dichlorobenzyl, polyethylene glycol 400, or polypropylene glycol 600, or polyether into the reaction vessel, raise the temperature to 150°C and keep it warm for 2 hours, add triethanolamine, and continue the reaction for 2 hours; cool down to 50°C, add an appropriate amount Diluted with water, static layered, separated the lower layer solution, removed the water layer, repeated 2 times, placed in a constant temperature oven at 95°C, and baked for 5 hours to obtain an anchoring group intermediate; the dichlorobenzyl, triethanolamine and The weight ratio of polyethylene glycol 400 or polypropylene glycol 600 or polyether is 150:70:350;

[0048] (2) Put the anchoring group intermediate, polyether-modified phthalic acid and p-toluenesulfonic acid into the reaction vessel, raise the temperature to 180°C, and keep ...

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Abstract

The invention discloses a hyperdispersant for carbon nanotubes (CNT). The hyperdispersant is composed of an anchoring part and an expanding chain part, wherein the anchoring part and the expanding chain part are linked through a bridge connecting part O-CH2CH2-O, (O-CH2CH)a-O, NHCH2CH2NH, (NHCH2CH2)b-NH; the expanding chain part is an epoxy ethane homopolymer, an epoxy propane polymer, an epoxy ethane / epoxy propane copolymer, a linear polymer or a nonlinear polyester. The invention also provides a preparation method of the hyperdispersant for carbon nanotubes. According to the invention, the erosion to the surface structure of a carbon nanotube is avoided by using physical modification; and under the premise of not adopting chemical modification, the invention provides a low-cost hyperdispersant which can be effectively adsorbed on the surface of CNT, and is stable in dispersing performance and good in environmental protection performance. The preparation method disclosed by the invention is reasonable in design, simple in operation, and high in product yield.

Description

technical field [0001] The invention relates to a dispersant, in particular to a hyperdispersant for carbon nanotubes; the invention also relates to a method for preparing the aforementioned hyperdispersant for carbon nanotubes. Background technique [0002] In the prior art, the preparation of 10% carbon nanotube color paste is all through chemical modification. The principle is to erode the surface structure of carbon nanotubes (English abbreviation: CNT) through strong oxidation such as nitric acid, and insert other groups on the surface of CNT to make it easy to disperse. Although a stable color paste can be obtained in this way, it is represented by sacrificing the surface structure, causing the pipe walls to be unable to be arranged in an orderly manner, conduct electricity, and the electromagnetic properties are greatly reduced, and the compressive resistance and wear resistance are reduced by at least 80%. [0003] There are domestic published patent literatures tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/44C09C3/10C08G81/00C08G65/48
Inventor 陈祝华张广路俞杨
Owner LIANYUNGANG TIANLIRUN CHEM
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