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- W4385456722 abstract "Abstract The traditional composite laminated structures suffer from the absence of reinforcements in the thickness direction between the laminae and microfibers, which will result in poor interaction between the laminae, individual microfiber filaments, and the resin. In addition, out‐of‐the‐plane properties are generally dominated and controlled by poor matrix properties (e.g., mechanical, electrical, and thermal). Most prior investigations were focused on the use of straight carbon nanotubes (CNTs), graphene, or nanomaterials in particle forms to improve the resin properties. Our previous research has shown that CNTs with helical (Heli‐Coil) geometries (HCNTs) are more effective as a nanoscale reinforcement to improve the properties of polymeric resins. Because of their inertness, the interfacial bonding between CNTs and the resin is generally weak, and they can be easily pulled out of the resin (inefficient load transfer) if the CNTs are in their straight forms. However, the helical geometries of HCNTs can provide unique mechanical‐interlocking mechanisms between the constituents that can substantially improve their effectiveness as a nanoscale reinforcement, leading to improvements in composite performance, properties, and multifunctionality. In this research, HCNTs at low concentrations below 0.1 wt% were processed and then used to fabricate nanocomposite laminates. Tensile test specimens were carefully prepared following the ASTM D3039/D3039M standard and then tested, analyzed, and evaluated. Additionally, the fractured test specimens were inspected and analyzed using optical and 3D scanning laser‐confocal‐microscopy imaging. The test results showed improvements of 12.3%, 11.3%, and 17.5% for the tensile strength, modulus, and strain‐to‐failure, respectively. In conclusion, traditional fiber‐reinforced composites can considerably benefit from the helical forms of HCNTs. Highlights The helical geometry of CNTs (HCNTs) is more effective for composite reinforcement. HCNTs provide unique interlocking mechanisms between the composite constituents. HCNTs can considerably improve the multifunctional characteristics of the composites. HCNTs can considerably improve the tensile properties of composite laminates. Traditional composites can substantially benefit from the helical forms of HCNTs." @default.
- W4385456722 created "2023-08-02" @default.
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- W4385456722 date "2023-08-01" @default.
- W4385456722 modified "2023-09-27" @default.
- W4385456722 title "Improvement of the tensile properties of laminated composites reinforced with <scp>Heli‐Coil</scp> forms of carbon nanotubes" @default.
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- W4385456722 doi "https://doi.org/10.1002/pc.27619" @default.
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