Performance of MWCNT/HDPE Nanocomposites at High Strain Rates

✍ Scribed by Waleed Al-Lafi; Jie Jin; Sunxi Xu; Mo Song

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 457 KB
• Volume: 295
• Category: Article
• ISSN: 1438-7492
• DOI: 10.1002/mame.200900374

✦ Synopsis

Abstract

Performance of HDPE/MWCNT composite at high strain rate up to 10^4^ s^−1^ was investigated in a split Hopkinson pressure bar. The results revealed that the incorporation of MWCNTs into HDPE can enhance the impact strength of HDPE. High strain rate impact has a significant influence on morphology, density, crystallinity and melting temperature of the composite. With increase in strain rate, the densities of both HDPE and HDPE/MWCNT composite decreased. The drop of the density of HDPE/MWCNT composite was quicker than that of HDPE density. This could be the reason that much more cracks were formed in the HDPE/MWCNT composite, which could result in high energy dissipation, during SHPB test. The corporation of MWCNTs did lead to the decrease in yield stress.

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