High mechanical properties of super aligned carbon nanocomposite by polyurethane based crosslinking molecules

被引：12
作者：
Moon, Sook Young [1 ,2 ]
Kim, Woo Sik [3 ]
机构：
[1] KIST, Inst Adv Composite Mat, Chudong Ro 92, Wanju Gun 55324, Jeonbuk, South Korea
[2] Japan Aerosp Explorat Agcy JAXA, Struct & Adv Composite Res Unit, 6-13-1 Osawa, Mitaka, Tokyo 1810015, Japan
[3] Korea Inst Ceram Engn & Technol, Ceram Fiber & Composite Ctr, 101 Soho Ro, Jinju Si 52851, Gyeongsangnam D, South Korea
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2018年 / 161卷
关键词：
Carbon nanotubes; Nano composites; Interfacial strength; Mechanical properties; NANOTUBE-POLYMER COMPOSITES; SURFACE MODIFICATION;
D O I：
10.1016/j.compscitech.2018.04.011
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
The interfacial bonding strongly influences the mechanical properties of composite materials. In this study, a polyurethane (PU)-based adhesive material reacted as an interfacial material between carbon nanotubes (CNTs) and an epoxy matrix while simultaneously functioning as a jointing material between CNTs. This synergistic strengthening effect enhanced the mechanical properties of the CNT-epoxy composite. The PU molecules enveloped and bonded well with the CNT surface, as revealed by transmission electron microscopy and Fourier transform infrared spectroscopy. The tensile strength of the composite materials with PU-grafted CNTs was enhanced approximately twofold to 316 MPa, which is substantially greater than that of the composite reinforced with uncoated CNTs (165 MPa). In addition, the tensile strain increased from 0.58% to 0.62% in the composite materials with PU-grafted CNTs.
引用
收藏
页码：100 / 106
页数：7
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