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Polymer-base carbon nanotube dispersing auxiliary, synthesis method and application thereof

A technology of carbon nanotubes and dispersing aids, which is applied in the innovative field of polymer-based carbon nanotube dispersing aids and their synthesis methods and uses, can solve the problems of low dispersion amount, etc., and achieves improved dispersion amount, wide process window, Simple to use effects

Inactive Publication Date: 2010-06-09
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problem of low dispersion of CNTs in commonly used organic solvents and significantly increases the dispersion of CNTs in organic solvents, thus laying the foundation for the solution method to prepare polymer-based carbon nanotube composites with excellent properties

Method used

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  • Polymer-base carbon nanotube dispersing auxiliary, synthesis method and application thereof
  • Polymer-base carbon nanotube dispersing auxiliary, synthesis method and application thereof
  • Polymer-base carbon nanotube dispersing auxiliary, synthesis method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A polymer-based carbon nanotube dispersion aid. It is represented by the following general formula (A)

[0035]

[0036] R in the general formula 1 for CH 3 (CH 2 ) 3 -; R 2 for -CH 2 -; n=46; m=0.89; its chemical structure is a pyrene-functionalized amorphous polystyrene homopolymer, the pyrene unit is located at the end of the polymer molecular chain, and the content is 0.89 pyrene units per one polymer chain; its number average molecular weight is 5,200, and its molecular weight distribution index is 1.21.

Embodiment 2

[0038] A polymer-based carbon nanotube dispersion aid. It can be represented by general formula (A), and general formula (A) is the same as embodiment 1. R in the general formula 1 for (CH 3 ) 2 CHCH 2 -; R 2 for -CH 2 -; n=80; m=0.96; its chemical structure is a pyrene functionalized amorphous polystyrene homopolymer, the pyrene unit is located at the end of the polymer molecular chain, and the content is 0.96 pyrene unit per one polymer chain; its number average molecular weight is 8,800, and its molecular weight distribution index is 1.20.

Embodiment 3

[0040] A polymer-based carbon nanotube dispersion aid. It can be represented by general formula (A), and general formula (A) is the same as embodiment 1. R in the general formula 1 for C 6 h 5 -; R 2 for -CH 2 -; n=180; m=0.97; its chemical structure is a pyrene-functionalized amorphous polystyrene homopolymer, the pyrene unit is located at the end of the polymer molecular chain, and the content is 0.97 pyrene units per one polymer chain; its number average molecular weight is 19,100, and its molecular weight distribution index is 1.17.

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Abstract

The invention relates to a polymer-base carbon nanotube dispersing auxiliary, a synthesis method and application thereof. The polymer-base carbon nanotube dispersing auxiliary is an amorphous polystyrene homopolymer with the function of pyrene, wherein the structural formula is a polymer that one end of the polystyrene main chain is sealed by 0.9-1.05 pyrene units, the number-average molar mass ranges from 5000 to 30000, and the molecular weight distribution index ranges from 1.10 to 1.21. The polymer-base carbon nanotube dispersing auxiliary is synthesized by an anion polymerization method, reactivity pyrene-containing compound is added in the later period of living polymerization of the styrene, and the reaction is terminated with methanol at the end of polymerization. The polymer-base carbon nanotube dispersing auxiliary can remarkably improve the dispersing ability in the normal organic solvent, and even carbon nanotube dispersing liquid with high concentration can be prepared. The dispersing liquid can be used for preparing styryl polymer (polystyrene or styryl copolymer) / carbon nanotube composite material of the carbon nanotube evenly dispersed in the matrix resin.

Description

technical field [0001] The invention relates to the field of polymer and nanotechnology, and more specifically relates to a polymer-based carbon nanotube dispersing aid and the innovation of its synthesis method and application. Background technique [0002] Carbon nanotubes (CNTs) are considered as ideal fillers for the preparation of high-performance, multifunctional polymer nanocomposites due to their ultra-high aspect ratio, low density, excellent physical and mechanical properties, and high thermal and electrical conductivity. . Although theoretical and experimental studies have proved that CNTs have the above-mentioned outstanding properties, the efforts of materials scientists, chemists, and physicists are still needed to realize these properties in polymer-based composites. Since CNTs, especially single-walled carbon nanotubes (SWNTs) have a large specific surface area, they usually exist in the form of tube bundles. When CNTs are dispersed in the matrix resin in t...

Claims

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Application Information

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IPC IPC(8): B01F17/52C08F112/08C08F8/02C08L25/06C08L53/02C08L55/02C08K7/00C08K3/04C09K23/52
Inventor 闫业海崔健王新程俊梅于永良
Owner QINGDAO UNIV OF SCI & TECH
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