Effect of Epoxy Functional Groups on the Properties of Carbon Fiber-Epoxy Composites
Honda R&D Co Ltd. Aircraft Engine R&D Center, 1-4-1 Chuo, Wako-shi, Saitama, 351-0193 Japan
- *Corresponding Author:
- Yoshida S
Honda R&D Co Ltd. Aircraft Engine
R&D Center, 1-4-1 Chuo, Wako-shi
Saitama, 351-0193 Japan
Tel: 91-120-234 1028
E-mail: [email protected]
Received Date: June 09, 2017 Accepted Date: July 19, 2017 Published Date: July 24, 2017
Citation: Yoshida S (2017) Effect of Epoxy Functional Groups on the Properties of Carbon Fiber-Epoxy Composites. J Appl Mech Eng 6: 276. doi: 10.4172/2168- 9873.1000276
Copyright: © 2017 Yoshida S. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Matrix resins of carbon fiber-epoxy composites with different numbers of epoxy functional groups were prepared, and their properties were compared to optimize the matrix resin composition. To understand the bonding strengths between the carbon fiber and epoxy resins in monofilaments and micro-sized resin beads, the interfacial shear strength (IFSS) was measured using the microdroplet technique. The bonding strength for the T800SC carbon fibers was maximized for a 50:50 (wt/wt) ratio of epoxy resins containing four and three epoxy groups per molecule, respectively, and that for the IMS60 carbon fibers was maximized for a 70:25:5 (wt/wt/wt) ratio of epoxy resins containing four, three, and two epoxy groups per molecule, respectively. The transverse tensile, in-plane shear, interlaminar shear, and compression strengths were higher for the interfacial-shear-strength-optimized T800SC-epoxy mixture than for the T800SC-100% basic bisphenol A epoxy material. These composite materials exhibit a potential to be used in applications such as automobiles and aircraft as lightweight, high-strength, and rigid materials.