Preparation and characterization of functionalized graphene oxide/carbon fiber/epoxy nanocomposites |
| |
| Affiliation: | 1. Department of Aerospace Engineering, MIT Campus, Anna University, Chennai, India;2. Advanced Polymer and Composites Research Group, School of Engineering, University of Portsmouth, PO1 3DJ, UK;1. Department of Engineering Mechanics, College of Aerospace Engineering, Chongqing Key Laboratory of Heterogeneous Material Mechanics, Chongqing University, Chongqing 400044, China;2. Department of Mechanical Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba City, Chiba 263-8522, Japan;3. School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, 2 George Street, GPO Box 2434, Brisbane, Australia;4. College of Mechanical and Vehicle Engineering, Hunan University, Changsha 412008, China;1. Nanomaterials and Devices Research Laboratory, School of Nano Science and Technology, National Institute of Technology Calicut, NITC Campus P.O., Calicut, Kerala, 673 601, India;2. Department of Mechanical Engineering, National Institute of Technology Calicut, NITC Campus P.O., Calicut, Kerala, 673 601, India;3. Department of Mechanical Engineering, MLR Institute of Technology, Dundigal, Hyderabad, Telangana, 500 043, India;1. School of Materials Science and Engineering, Shandong University of Science and Technology, 266590 Qingdao, People’s Republic of China;2. College of Chemical and Environmental Engineering, Shandong University of Science and Technology, 266590 Qingdao, People’s Republic of China;3. Carbon Fiber Engineering Research Center, School of Materials Science and Engineering, Shandong University, 250061 Jinan, People’s Republic of China;1. Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;1. Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, PR China;2. School of Material Science and Engineering, University of Jinan, Jinan 250022, PR China |
| |
| Abstract: | Graphene oxide (GO) was functionalized using three different diamines, namely ethylenediamine (EDA), 4,4′-diaminodiphenyl sulfone (DDS) and p-phenylenediamine (PPD) to reinforce an epoxy adhesive, with the aim of improving the bonding strength of carbon fiber/epoxy composite. The chemical structure of the functionalized GO (FGO) nanosheets was characterized by elemental analysis, FT-IR and XRD. Hand lay-up, as a simple method, was applied for 3-ply composite fabrication. In the sample preparation, the fiber-to-resin ratio of 40:60 (w:w) and fiber orientations of 0°, 90°, and 0° were used. The GO and FGO nanoparticles were first dispersed in the epoxy resin, and then the GO and FGO reinforced epoxy (GO- or FGO-epoxy) were directly introduced into the carbon fiber layers to improve the mechanical properties. The GO and FGO contents varied in the range of 0.1–0.5 wt%. Results showed that the mechanical properties, in terms of tensile and flexural properties, were mainly dependent on the type of GO functionalization followed by the percentage of modified GO. As a result, both the tensile and flexural strengths are effectively enhanced by the FGOs addition. The tensile and flexural moduli are also increased by the FGO filling in the epoxy resin due to the excellent elastic modulus of FGO. The optimal FGO content for effectively improving the overall composite mechanical performance was found to be 0.3 wt%. Scanning electron microscopy (SEM) revealed that the failure mechanism of carbon fibers pulled out from the epoxy matrix contributed to the enhancement of the mechanical performance of the epoxy. These results show that diamine FGOs can strengthen the interfacial bonding between the carbon fibers and the epoxy adhesive. |
| |
| Keywords: | Graphene oxide Carbon fiber Chemical modification Mechanical properties |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
