Enhancing Interfacial Bonding and Mechanical Properties of Carbon Fiber Reinforced Plastics Using Covalently Bonded Graphene Oxide and Reactive Acrylic Resin
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초록
내용
CFRP often suffers from delamination between fiber and resin. To improve this, graphene oxide (GO) is covalently bonded to both using silane coupling agents. GO's strength boosts nanocomposite properties, and covalent bonding enhances interfacial strength.
Elium resin, a novel thermoplastic, simplifies processing compared to traditional resins, enabling techniques like vacuum-assisted resin transfer molding (VARTM). However, thermoplastics typically have lower bonding strength, necessitating enhancement.
Two silane coupling agents were used: one with an amine group reacted with carboxylic acids on the fiber, and one with an MMA group bonded with Elium resin during polymerization. FT-IR, XPS, TGA, and SEM confirmed successful grafting of KH570 and APTMS onto GO. This increased interlaminar shear strength (ILSS), indicating effective stress transfer.
This study shows that covalent bonding with Elium resin can improve CFRP interfacial bonding and mechanical properties.