Improvement of modulus, strength and fracture toughness of CNT/Epoxy nanocomposites through the functionalization of carbon nanotubes
| Autor: | Jong Kyoo Park, Jung Cheol Kim, Soon Hyung Hong, Gwang Hoon Jun, Jaemin Cha, Ho Jin Ryu |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Nanocomposite Polymer nanocomposite Mechanical Engineering Modulus Fracture mechanics 02 engineering and technology Carbon nanotube Epoxy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Industrial and Manufacturing Engineering 0104 chemical sciences law.invention Fracture toughness Mechanics of Materials law visual_art Ultimate tensile strength Ceramics and Composites visual_art.visual_art_medium Composite material 0210 nano-technology |
| Zdroj: | Composites Part B: Engineering. 129:169-179 |
| ISSN: | 1359-8368 |
| Popis: | Carbon nanotubes (CNTs) are considered as high potential filler material to improve the mechanical properties of epoxy nanocomposites. The CNTs are functionalized by attaching melamine to improve the dispersibility in epoxy matrix and to enhance the interfacial bonding between CNTs and matrix. The tensile tests and single edge notch bending (SENB) tests were performed for CNT/Epoxy and M-CNT/Epoxy nanocomposites at various weight fraction of functionalized CNTs. The M-CNT/Epoxy nanocomposites with addition of 2wt% functionalized CNTs exhibited enhancements of Young's modulus by 64% and ultimate tensile strength by 22%. Furthermore, a significant increase of fracture toughness by 95% was observed for 2wt% M-CNT/Epoxy nanocomposite. The homogeneity of CNTs in epoxy matrix has been analyzed and related to the improvement of modulus and strength. The phenomena of crack propagation has been investigated and related to the improvement of fracture toughness. |
| Databáze: | OpenAIRE |
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