Fabrication And Characterization Of SWCNT- Reinforced Polyester Nanocomposites Using Tensile Test And Nanoindentation Techniques

Minh-Tai Le1 and Shyh-Chour Huang2*

1Faculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City, Vietnam

2Department of Mechanical Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung, 80778 Taiwan

Adv. Mater. Lett., 2015, 6 (8), pp 711-716

DOI: 10.5185/amlett.2015.5821

Publication Date (Web): Aug 02, 2015

E-mail: shuang@cc.kuas.edu.tw

Abstract


The main objective of this work is to conduct a manufacturing experiment on a single-walled carbon nanotube (SWCNT)/polyester nanocomposite for characterization of its mechanical properties using a tensile test and nanoindentation techniques. Experimental specimens were made under identical conditions using the hot press process. Dispersion of SWCNTs in an unsaturated polyester matrix was conducted by a sonication method, and a high-speed shear mixer was used for mixing the curing agent and resin. Following the manufacturing of the SWCNT/polyester nanocomposites, characterization of the mechanical properties of the material was performed by tensile testing and nanoindentation techniques. In addition, the morphologies of the fractured surface of SWCNT/polyester nanocomposites were observed with a scanning electron microscope (SEM). The results of mechanical tests exhibit improvements of Young’s modulus and hardness by 35% and 29%, respectively, at 1.0 wt% SWCNTs. In addition, the elastic modulus determined by the nanoindentation technique differs from the one obtained from tensile tests by 16%. The experimental samples are expected to yield the novel promising materials that offer a low-cost, high-strength material for use in the manufacture of lightweight components for automobiles, transportation systems and consumer products.

Keywords

Single-walled carbon nanotube (SWCNT), unsaturated polyester, nanocomposite, tensile test, nanoindentation.

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