Abstract

AbstractThe low‐damage and high‐efficiency tight bonding of two inert materials, carbon nanotubes (CNTs) and carbon fibers (CFs), is implemented simply and mildly based on the secondary reaction platform role of polydopamine (PDA). The strong adhesion of PDA can fix varying masses of CNTs stably and uniformly on the surface of carbon fiber, which significantly augments the polar component and roughness of fiber surface. In the proposed control method, the interface shear strength and interlaminar shear strength of CF‐PDA6‐CNTs0.05 increase by ≈61.03% and 55.30% compared to desized CFs based composites. Remarkably, the improvement mechanism in the mechanical properties of the composites is analyzed by the transverse fracture morphology of the composites as well as thermodynamically.

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