ABSTRACT

CNT based nanocomposites are known to have superior mechanical properties, such as elastic modulus (E), tensile strength (σ), etc., compared to other nanocomposite materials. Traditionally E of the nanocomposites is measured by direct methods like the three-point bend test, four-point bend test, etc., which are destructive. However, it is possible to determine their E value by an indirect method, namely Raman spectroscopy, which is nondestructive. In this paper, four different CNT composites have been prepared, such as CNT-SiO₂, CNT-NiO, CNT-NiMgAl, and CNT-NiOFe by pyrolyzing waste plastic with SiO₂, NiO, NiMgAl, and NiOFe catalysts, respectively. The prepared CNTs are multiwall types with diameters and the number of walls are in the range of 4.88–108 nm and 5–133, respectively. The E of the prepared CNT composites have been determined using Raman spectra and found to be in the range of 4.99-28.63 GPa, which are within the range of other reported CNT composites (∼1.5-95.40 GPa). The present work will help in the study of the measurement of mechanical properties of CNT based nanocomposites by nondestructive methods.

摘要

与其他纳米复合材料相比，基于 CNT 的纳米复合材料已知具有优异的机械性能，例如弹性模量 (E)、拉伸强度 (σ) 等。传统上，纳米复合材料的E是通过三点弯曲试验、四点弯曲试验等直接方法测量的，具有破坏性。但是，可以通过非破坏性的间接方法，即拉曼光谱法来确定它们的 E 值。_{本文采用SiO 2}热解废塑料制备了四种不同的CNT复合材料，如CNT-SiO ₂、CNT-NiO、CNT-NiMgAl和CNT-NiOFe。、NiO、NiMgAl 和 NiOFe 催化剂。制备的碳纳米管是多壁类型，直径和壁数分别在 4.88-108 nm 和 5-133 范围内。使用拉曼光谱测定了制备的 CNT 复合材料的 E，发现其在 4.99-28.63 GPa 的范围内，这在其他报道的 CNT 复合材料的范围内（~1.5-95.40 GPa）。目前的工作将有助于研究通过无损方法测量基于 CNT 的纳米复合材料的机械性能。