The reinforcing effect of oriented graphene on the interlaminar shear strength of carbon fabric/epoxy composites. (5th January 2020)

• Record Type: Journal Article
• Authors: Shen, Xiao-Jun; Dang, Chen-Yang; Tang, Bo-Lin; Yang, Xiao-Hui; Nie, Hui-Jie; Lu, Jing-Jing; Zhang, Tong-Tong; Friedrich, Klaus
• Is Part Of: Materials & design. Volume 185(2020)
• Publication Date: 2020-01-05
• Subjects: Carbon fiber -- Polymer-matrix composites (PMCs) -- Epoxy -- Interlaminar shear strength -- Magnetic oriented graphene oxide; Materials -- Periodicals; Engineering design -- Periodicals; Matériaux -- Périodiques; Conception technique -- Périodiques; Electronic journals; 620.11
• DOI: 10.1016/j.matdes.2019.108257
• Languages: English
• ISSNs: 0264-1275

Abstract

Abstract: In this study, nano Fe3 O4 functionalized graphene oxide (Fe3 O4 @GO) was employed to enhance the interlaminar shear strength (ILSS) of carbon fabric/epoxy (CF/EP) composites. The composite was fabricated via a vacuum-assisted resin transfer molding process under a magnetic field. The microstructure and reinforcement mechanism of the CF/EP composite was further investigated. The results indicate that the Fe3 O4 @GO can increase the ILSS of the CF/EP composite by 12.9%, and it can further enhance it to 41% under the magnetic field orientation. Furthermore, it was observed that the oriented Fe3 O4 @GO can also improve the flexural strength and tensile strength of the CF/EP composite by 29.7% and 40.9%, respectively. The main reason is that the oriented GO arrangement is better ordered and thus can withstand more lateral loads inside the composite. Graphical abstract: Image 1 Highlights: The interlaminar shear strength (ILSS) of a CF/EP composite can be effectively improved by oriented Fe3 O4 @GO. The Fe3 O4 @GO can form an oriented structure in the CF/EP composites by magnetic field orientation. The optimal content of oriented Fe3 O4 @GO for enhancing the ILSS of the CF/EP composite is 1 wt%. The optimal molar ratio of Fe 2+ and Fe 3+ for preparing Fe3 O4 @GO was found to be 1:1.25.