Study of sizing agents for carbon fibre-reinforced nylon-6 composites
Unidirectional carbon fibre-reinforced polymers (CFRPs) are a popular choice of material in aviation, automobiles, and sporting goods due to their excellent mechanical properties such as high strength-to-weight ratio, stiffness and great fatigue resistance. More recently, to tackle CF-related...
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| Format: | Final Year Project |
| Language: | English |
| Published: |
Nanyang Technological University
2023
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| Online Access: | https://hdl.handle.net/10356/165776 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Unidirectional carbon fibre-reinforced polymers (CFRPs) are a popular choice of material in
aviation, automobiles, and sporting goods due to their excellent mechanical properties such as
high strength-to-weight ratio, stiffness and great fatigue resistance. More recently, to tackle
CF-related environmental issues, thermoplastic-based CFRPs is an emerging class of
composite material due to several advantages such as higher toughness and better recyclability.
Nonetheless, the poorer CF/matrix physicochemical interactions typically result in weaker
mechanical properties of the composite. Hence, this study has investigated how the structure
of sizing agent impacts the interfacial properties of CF/PA6 composites. Waterborne
polyurethane (WPU), a linear structured polymer, and acid-modified lignin, a hyperbranched
macromolecule, have been employed as the sizing agents, respectively. The anionic-based
sizing agents have been successfully deposited on the CF surface via electrophoretic
deposition. Subsequently, fibre pull-out tests, mode II interlaminar fracture toughness (ILFT)
tests were performed to evaluate the improvement in interfacial properties of the CF/PA6
composites. |
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