Graphene dispersing agent, preparation method thereof and preparation method of graphene

A graphene and organic solvent technology, applied in chemical instruments and methods, dyeing low-molecular organic compound treatment, fibrous fillers, etc., can solve the problems of poor dispersion performance and limited dispersion of graphene, and achieve excellent graphene dispersion ability , low preparation cost and low defect content
CN103623741BActive Publication Date: 2015-05-20CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
Publication Date
2015-05-20

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Abstract

The invention provides a graphene dispersing agent as shown in a formula (I), a formula (II) or a formula (III) in the Specification. The graphene dispersing agent consists of a naphthalene tetracarboxylic acid bisimide unit, an anion group and an alkyl chain. Firstly, the naphthalene tetracarboxylic acid bisimide unit and graphene have strong attraction to each other, so that the whole molecules can be combined with the graphene; secondly, the anion group has excellent water solubility, so that the combined object of the molecules and the graphene can be fully dispersed in water; moreover, the alkyl chain can be used for separating the naphthalene tetracarboxylic acid bisimide unit from the anion group, so that the naphthalene tetracarboxylic acid bisimide unit and the anion group can act independently. Therefore, through the combination of the naphthalene tetracarboxylic acid bisimide unit, the anion group and the alkyl chain, the graphene dispersing agent provided by the invention has excellent graphene dispersing capability; the graphene prepared by using the graphene dispersing agent and adopting an ultrasonic method is not subjected to the oxidation-reduction process, so that the flaw content is low, and the preparation cost is low.
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Description

technical field

[0001] The invention relates to the field of dispersants, in particular to a graphene dispersant, a preparation method thereof and a graphene preparation method. Background technique

[0002] Graphene is made of sp 2 Hybridized carbon atoms are interconnected to form a carbon material with a two-dimensional honeycomb lattice structure with a thickness of one atomic layer. Graphene has excellent electrical, mechanical, thermal and mechanical properties, and is expected to be widely used in transparent conductive films, composite materials, energy, sensors, biotechnology, catalytic materials and other fields.

[0003] Existing graphene preparation methods include mechanical exfoliation, epitaxial growth, chemical vapor deposition, oxidation-reduction, solution ultrasonic exfoliation, etc. Among them, the methods of mechanical exfoliation, epitaxial growth, and chemical vapor deposition can obtain graphene with low defect content, but these three methods can o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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