Construction of “flexible-rigid” interphase by waterborne polyurethane /phenoxy resin sizing agents for carbon fiber/phenoxy resin (CF/PR) composites

Key Points

• The flexible-rigid interphase improves the bonding strength in CF/PR composites, enhancing overall performance.
• Mechanical testing shows a significant increase in tensile strength and durability in composites with the new interphase.
• Construction of the interphase involved incorporating waterborne polyurethane and phenoxy resin as sizing agents.
• Implications of enhanced interphase may lead to stronger and more durable composite materials in various applications.