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Vol. 210, Issue 3, March 2017, pp. 17-19

 

Bullet

 

In-situ Elevated Temperature Mechanical Performance of MWCNT/epoxy Nanocomposite
 

* Bhanu Pratap Singh, Dinesh Kumar Rathore, Sarat Chandra Mohanty, Rajesh Kumar Prusty and Bankim Chandra Ray

Composite Materials Group, Metallurgical and Materials Engineering Department, National Institute of Technology, Rourkela, India-769008

* E-mail: bpsingh208021@gmail.com

 

Received: 9 January 2017 /Accepted: 3 March 2017 /Published: 31 March 2017

Digital Sensors and Sensor Sysstems

 

Abstract: The present investigation has been focused on the effects of multi-walled carbon nanotube (MWCNT) addition on the mechanical performance of epoxy under different in-service elevated temperature environments. Room temperature flexural test results revealed that addition of 0.1 wt. % MWCNT into epoxy resin resulted in modulus and strength enhancement of 21 % and 9 % respectively. With increase in service temperature, significant decrement in both modulus and strength was noticed for both materials (neat epoxy and MWCNT/epoxy nanocomposite), but the rate of degradation was found to be quite drastic for the nanocomposite. At 90 C temperature, the CNT/epoxy nanocomposite exhibited inferior modulus and strength, which are 41 % and 59 % lower than neat epoxy respectively. The variation trend in elastic modulus with temperature obtained from both flexural testing and DMA for both these materials was also analyzed. It was found that addition of 0.1 % CNT in the epoxy reduced the glass transition temperature by about 16C.

 

Keywords: Multi-walled carbon nanotube (MWCNT), Nanocomposite

 

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