Fabrication and mechanical properties of carbon fiber/epoxy nanocomposites containing high loadings of noncovalently functionalized graphene nanoplatelets

被引：81
作者：
Kim, Joonhui [1 ]
Cha, Jaemin [2 ]
Chung, Bongjin [3 ]
Ryu, Seongwoo [3 ]
Hong, Soon H. [2 ]
机构：
[1] KISTEP, Ctr R&D Performance Diffus, 1339 Wonjung Ro, Eumseong Gun 27740, Chungcheongbuk, South Korea
[2] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, 291 Daehak Ro, Daejeon 34141, South Korea
[3] Univ Suwon, Dept Mat Sci & Engn, San 2-2 Wau Ri, Hwaseong Si 18323, Gyeonggi Do, South Korea
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2020年 / 192卷
基金：
新加坡国家研究基金会;
关键词：
Carbon fiber reinforced-polymer (CFRP) composites; Dispersion; Functionalization; Graphene nanoplatelets; Mechanical properties; FRACTURE-TOUGHNESS; FIBER COMPOSITES; INTERFACIAL MICROSTRUCTURE; ELECTRICAL-PROPERTIES; POLYMER COMPOSITES; NANOTUBES; REINFORCEMENT; OXIDE; DISPERSION; COVALENT;
D O I：
10.1016/j.compscitech.2020.108101
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Carbon fiber-reinforced polymer (CFRP) composites containing graphene nanoplatelets (GNPs) were prepared and characterized. Bonding via pi-pi interactions with poly(4-aminostyrene) (PAS) improved the degree of dispersion of the GNPs in an epoxy matrix. Differences in dispersion and reinforcement between pristine GNPs and PAS-GNPs were established by ultraviolet-visible spectroscopy and scanning electron microscopy. The PAS-GNP/epoxy nanocomposites were characterized by their fracture toughness. The results were discussed in terms of the dispersion quality of the GNPs. Furthermore, the PAS-GNP/epoxy nanocomposites were applied to carbon fiber fabric and the interlaminar shear strength (ILSS) and fracture toughness were measured. The greatest improvements in ILSS (252%) and fracture toughness (142%) were obtained with 4 wt% PAS-GNPs. The superior mechanical properties of the CF/PAS-GNP/epoxy nanocomposites are attributed to better filler dispersion and crack bridging.
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页数：10
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