Carbon material dispersing agent, preparation method thereof and water-borne dispersion body of stable carbon material containing dispersing agent

A dispersant, carbon material technology, applied in nano-carbon, graphite, graphene and other directions, can solve the problems of difficult to realize industrial production, dangerous ionic liquids, high toxicity of organic solvents, etc., and achieve low-cost effects
CN108559092AActive Publication Date: 2018-09-21SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI JIAO TONG UNIV
Publication Date
2018-09-21

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Abstract

The invention relates to a carbon material dispersing agent, a preparation method thereof and a water-borne dispersion body of a stable carbon material containing the dispersing agent. Specifically, the dispersing agent is suitable for dispersion of the carbon material with a graphene structure and contains an amphipathic hyperbranched polymer, wherein the polymer is provided with a framework structure containing amidogen and a monocycle or polycycle, condensed ring or heterocyclic amidogen covalently bonded with the framework structure and non-covalently associated with the graphene structure. The preparation method of the carbon material dispersing agent comprises the steps that (i) a glycidyl compound reacts with polyfunctional amine so as to prepare a hyperbranched polymer with secondary amidogen at the tail end, wherein the amino hydrogen of the polyfunctional amine is excessive compared with the glycidyl mole of the glycidyl compound; (ii) the monocycle or polycycle, condensed ring or heterocyclic amidogen non-covalently associated with the graphene structure is introduced into the hyperbranched polymer through reaction with the secondary amidogen, and accordingly the dispersing agent containing the amphipathic hyperbranched polymer is prepared.
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Description

Technical field

[0001] The invention relates to a carbon material dispersant and a preparation method thereof. The present invention also relates to a stable aqueous dispersion of carbon material containing the above-mentioned carbon material dispersant and its application in various fields. The present invention additionally relates to an amphiphilic hyperbranched polymer. Background technique

[0002] Carbon materials, especially carbon materials with graphene structure, have extremely high application value due to their unique structure. As a typical representative of this type of carbon material, graphene is a kind of carbon atoms with sp 2 The two-dimensional crystal material with a regular hexagonal honeycomb lattice structure formed by hybridization is only one or a few carbon atoms thick. This ordered and ultra-thin two-dimensional structure gives graphene the following excellent physical and chemical properties: light weight, low density, high chemical stability ...

Claims

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