Nanoscale reinforcements for aerostructural bonding systems: Characterization and performance analysis

Functionalized CNTs-OH and Graphene-COOH offer a promising hybrid filler system for enhancing epoxy resin composites, especially for space applications. By introducing polar functional groups, these fillers achieve superior dispersion, strong interfacial bonding, and reduced agglomeration within the epoxy matrix. The mechanical improvements achieved are at the same level as advanced methods like CVD, while functionalization simplifies processing, improves scalability, and ensures compatibility with epoxy. These advantages make functionalized hybrids ideal for lightweight, high-strength, and durable materials required in extreme environments, addressing the challenges of space technology while balancing performance and manufacturability.