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- Title
Behavior of the Dynamic Fracture of a Hybrid Nanocomposite: an Optical Study of Synergistic Toughening Effects.
- Authors
Wang, F. X.; Guo, F. Z.; Sun, Y.; Yang, B.; Ma, Y. S.; Zhao, Q. S.; Tan, J. P.
- Abstract
Behavior of the dynamic fracture of different nanocomposites filled with single- and hybrid-phase nanoparticles, including multilayered graphene nanoplates (GNPs) and functionalized multiwalled carbon nanotubes (CNT@X) treated by a nonionic surfactant was investigated based on 2D Digital Speckle Correlation (DSC) and highspeed camera technologies. In particular, synergistic toughening effects of hybrid CNT@X+GNPs particles with various filler ratios on the fracture toughness of the epoxy matrix, mainly referring to the mode-I stress intensity factors (SIFs), were revealed. An improved mode-I crack initiation toughness KIi, = 3.47 ± 0.14 MPa·m1/2 was found in the case of EP/T@X+G_7/3, which even doubled over the EP/GNPs_1.0 specimen. These results can be attributed to the synergistic toughening mechanism of hybrid CNT@X+GNPs fillers in the epoxy matrix, which generated highly rough fracture surfaces and an extensive shear failure.
- Subjects
MULTIWALLED carbon nanotubes; NANOCOMPOSITE materials; FRACTURE toughness; NONIONIC surfactants; ROUGH surfaces
- Publication
Mechanics of Composite Materials, 2023, Vol 59, Issue 3, p569
- ISSN
0191-5665
- Publication type
Article
- DOI
10.1007/s11029-023-10116-8