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Mechanical Properties of PDMS/CNTs Nanocomposites

Published online by Cambridge University Press:  01 February 2011

Chung-Lin Wu ,
Hsueh-Chu Lin ,
Chien-Hsin Huang ,
Ming-Chuen Yip  and
Weileun Fang
Chung-Lin Wu
Affiliation:
[email protected], National Tsing Hua University, Power Mechanical Engineering, No.101, Sec. 2, Guangfu Rd., Hsinchu City 300, Taiwan (R.O.C.), Hsinchu, 300, Taiwan
Hsueh-Chu Lin
Affiliation:
[email protected], National Tsing Hua University, Power Mechanical Engineering, No.101, Sec. 2, Guangfu Rd., Hsinchu, 300, Taiwan
Chien-Hsin Huang
Affiliation:
[email protected], National Tsing Hua University, Power Mechanical Engineering, No.101, Sec. 2, Guangfu Rd., Hsinchu, 300, Taiwan
Ming-Chuen Yip
Affiliation:
[email protected], National Tsing Hua University, Power Mechanical Engineering, No.101, Sec. 2, Guangfu Rd., Hsinchu, 300, Taiwan
Weileun Fang
Affiliation:
[email protected], National Tsing Hua University, Power Mechanical Engineering, No.101, Sec. 2, Guangfu Rd., Hsinchu, 300, Taiwan
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Abstract

This study presents the mechanical and electrical properties (including elastic modulus, yield strength and electrical resistance) of PDMS/CNTs nanocomposites. The elastic modulus and yield strength were determined from tensile tests. In addition, a high resistance meter was used to measure the electrical resistances of the PDMS/CNTs nanocomposites. The test specimens of nanocomposites were manufactured using the thermoforming method. There were two recipes used during the thermoforming process: 100 °C for 1 hour, and 150 °C for 15 minutes. The mixtures of PDMS and CNTs were stirred by ultrasonic instrument to prevent polymerization. A feeler gap was used to define the thickness of the specimens. Therefore, the thickness could be controlled within the range of ∼100 μm. Four different kinds of specimens were investigated, including pure PDMS, 1.0 wt%, 2.0 wt% and 4.0 wt% CNTs polymeric composites. As for the l00°C recipe, the elastic modulus of pure PDMS, 1.0 wt%, 2.0 wt%, and 4.0 wt% CNTs were 1.05MPa, 1.17MPa, 1.10MPa and 1.35MPa, respectively. A for the l50°C recipe, the elastic modulus of pure PDMS, 1.0 wt%, 2.0 wt% and 4.0 wt% CNTs were 1.32MPa, 1.42MPa, 1.43MPa, and 1.54MPa. The differences of electrical resistance of PDMS/CNTs nanocomposites at two different conditions and the microstructures composed of the mixtures are also described in this article.

Keywords

mixturecompositestrength
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1056: Symposium HH – Nanophase and Nanocomposite Materials V , 2007 , 1056-HH11-46
Copyright
Copyright © Materials Research Society 2008

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References

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