Interfacial enhancement of carbon fiber/nylon 12 composites by grafting nylon 6 to the surface of carbon fiber

被引:81
作者
Chen Hui [1 ]
Cai Qingyu [2 ]
Wu Jing [1 ]
Xia Xiaohong [1 ]
Liu Hongbo [1 ]
Luo Zhanjun [1 ]
机构
[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China
[2] Hunan Univ, Coll Mech & Vehicle Engn, Changsha 410082, Hunan, Peoples R China
关键词
Carbon fiber; Chemical grafting; Nylon; 6; 12; Composites; REINFORCED COMPOSITES; MECHANICAL-PROPERTIES; HEAT-TREATMENT; ADHESION; PLASMA; FUNCTIONALIZATION; NANOTUBES; OXIDATION; IMPACT;
D O I
10.1016/j.apsusc.2018.01.158
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Nylon 6 (PA6) grafted onto carbon fiber (CF) after chemical oxidation treatment was in an attempt to reinforce the mechanical properties of carbon fiber composites. Scanning electronic microscopy (SEM), Fourier transform infrared analysis (FT-IR), X-ray photoelectron spectroscope (XPS) and thermogravimetric analysis (TG) were selected to characterize carbon fibers with different surface treated. Experimental results showed that PA6 was grafted uniformly on the fiber surface through the anionic polymerization. A large number of functional groups were introduced to the fiber surface and the surface roughness was increased. After grafting PA6 on the oxidized carbon fibers, it played an important role on improving the interfacial adhesion between the fibers and the matrix by improving PA12 wettability, increasing chemical bonding and mechanical interlocking. Compared with the desized CF composites, the tensile strength of PA6-CF/PA12 composites was increased by 30.8% from 53.9 MPa to 70.2 MPa. All results indicated that grafting PA6 onto carbon fiber surface was an effective method to enhance the mechanical strength of carbon fiber/nylon 12 composites. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码:538 / 545
页数:8
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