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Efficient reinforcement of epoxy resin with amine‐rich rigid short‐chain grafted graphene oxide
Author(s) -
Shen Lu,
Zhang Xueqin,
Lei Yanzhou,
Liang Mei,
Chen Yang,
Chen Wenbin,
Zou Huawei
Publication year - 2021
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.26186
Subject(s) - materials science , epoxy , composite material , toughness , ultimate tensile strength , surface modification , graphene , oxide , nanocomposite , chemical engineering , nanotechnology , engineering , metallurgy
For improving the mechanical properties of epoxy resin (EP), it is an effective strategy to utilize surface‐modified graphene oxide (GO) as a reinforcement. However, there is nearly no report on surface modification using rigid short‐chain grafted GO, especially with multiple reactive sites. In this work, a novel surface functionalization of GO with an amine‐rich rigid short‐chain was successfully prepared and applied as a filler for EP with simultaneously high toughness and mechanical strength. Superior toughness and mechanical strength of the resultant epoxy nanocomposite can be obtained by grafting amine‐rich rigid short‐chain onto GO (DHN‐GO) owing to the enhanced interface binding ability with the EP and the optimized dispersibility in the matrix. Compared with the pure EP, the epoxy nanocomposites at an extremely low loading (0.75 wt‰) of DHN‐GO showed excellent mechanical properties. The tensile strength, elongation at break, and bending strength are increased by 28%, 37%, and 29%, respectively. This work is expected to provide more inspiration for the preparation of GO/EP composites with high toughness and mechanical strength.