Effect of aromatic amine modified graphene aerogel on the curing kinetics and interfacial interaction of epoxy composites

Aromatic amine modified 3D porous graphene aerogel was prepared through chemical reduction and self-assembly of graphene oxide sheets in one step by using diaminodiphenylmethane (DDM) as a reducing agent, modifying agent, and curing agent. Subsequently, the DDM-modified graphene aerogel (DGA) was fu...

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Bibliographic Details
Published in:Journal of materials science 2020-08, Vol.55 (24), p.10558-10571
Main Authors: Zhan, Wenwei, Fu, Xue, Wang, Feng, Zhang, Wenqing, Bai, Gang, Xiao, Wei, Zhou, Aosong, Sui, Gang, Yang, Xiaoping
Format: Article
Language:English
Subjects:
Activation energy
Aerogels
Amines
Characterization and Evaluation of Materials
Chemical reduction
Chemistry and Materials Science
Classical Mechanics
Composites & Nanocomposites
Compressive properties
Crystallography and Scattering Methods
Curing
Curing agents
Electric properties
Electrical conductivity
Electrical resistivity
Epoxy resins
Graphene
Graphite
Materials Science
Mechanical properties
Methylene dianiline
Polymer matrix composites
Polymer Sciences
Reaction kinetics
Reducing agents
Self-assembly
Solid Mechanics
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Summary:Aromatic amine modified 3D porous graphene aerogel was prepared through chemical reduction and self-assembly of graphene oxide sheets in one step by using diaminodiphenylmethane (DDM) as a reducing agent, modifying agent, and curing agent. Subsequently, the DDM-modified graphene aerogel (DGA) was fully infiltrated with epoxy resin to obtain the DGA/epoxy composites. The abundant amine groups derived from DDM on the DGA can react with epoxy resin to strengthen the interfacial interaction, further promoted the curing behaviors by significantly lowering the reaction activation energy. The reinforcement of interfacial interaction and well-interconnected frameworks enhanced the effective transfer of stress and electrons in the resulting composites. Thus, the resulting DGA/epoxy composites exhibited excellent compressive properties and high electrical conductivity. This study presented a facile technique for preparing porous graphene aerogel, which simultaneously improved the electrical conductivity and mechanical properties of epoxy composites, and overcame the issues of dispersion and interfacial interaction of traditional nanofillers.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-020-04746-9