Reinforced carbon fiber laminates with oriented carbon nanotube epoxy nanocomposites: Magnetic field assisted alignment and cryogenic temperature mechanical properties

• Published in: Journal of colloid and interface science Vol. 517; pp. 40 - 51
• Main Authors: He, Yuxin, Yang, Song, Liu, Hu, Shao, Qian, Chen, Qiuyu, Lu, Chang, Jiang, Yuanli, Liu, Chuntai, Guo, Zhanhu
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.05.2018
• Subjects: Carbon fiber; carbon fibers; Carbon nanotubes; coprecipitation; Cryogenic temperature; epoxides; Epoxy; iron oxides; Magnetic field; magnetic fields; magnetic properties; mechanical properties; nanocomposites; Oriented; temperature; thermal expansion; Carbon nanotubes; Epoxy; Magnetic field; Cryogenic temperature; Oriented; Carbon fiber
• ISSN: 0021-9797; 1095-7103; 1095-7103
• DOI: 10.1016/j.jcis.2018.01.087

[Display omitted] The epoxy nanocomposites with ordered multi-walled carbon nanotubes (MWCNTs) were used to influence the micro-cracks resistance of carbon fiber reinforced epoxy (CF/EP) laminate at 77 K, Oxidized MWCNTs functionalized with Fe3O4 (Fe3O4/O-MWCNTs) with good magnetic properties were prepared by co-precipitation method and used to modify epoxy (EP) for cryogenic applications. Fe3O4/O-MWCNTs reinforced carbon fiber epoxy composites were also prepared through vacuum-assisted resin transfer molding (VARTM). The ordered Fe3O4/O-MWCNTs were observed to have effectively improved the mechanical properties of epoxy (EP) matrix at 77 K and reduce the coefficient of thermal expansion (CTE) of EP matrix. The ordered Fe3O4/O-MWCNTs also obviously improved the micro-cracks resistance of CF/EP composites at 77 K. Compared to neat EP, the CTE of ordered Fe3O4/O-MWCNTs modified CF/EP composites was decreased 37.6%. Compared to CF/EP composites, the micro-cracks density of ordered Fe3O4/O-MWCNTs modified CF/EP composites at 77 K was decreased 37.2%.