Effect of nano- and micro- reinforced agents on dry sliding wear of polyester composites

Chong, Meng Mun and Chang, Siang Yee and Noraiham Muhammad, and Zulkifli Mohd Rosli, and Qumrul Ahsan, (2014) Effect of nano- and micro- reinforced agents on dry sliding wear of polyester composites. Sains Malaysiana, 43 (6). pp. 959-966. ISSN 0126-6039


Official URL: http://www.ukm.my/jsm/


Dry sliding wear of polyester hybrid composites containing carboxylic functionalized multi-walled carbon nanotubes (CNT) and microparticles, silica (SiO2) was studied at different sliding distances. An attempt has been made to produce uniform dispersion of nano- and micro- particles in the test samples by ultrasonication. The tribological properties of the hybrid composites were performed by using pin-on-disc (POD) tester against grey cast iron countersurface. The dry sliding wear tests were carried out under pressure-velocity (pv) condition of 0.4 MPa and 4 m/s for total sliding distance of 28800 m and at an interval of every sliding distance of 3600 m, wear properties and behavior were studied. The samples containing 10 wt.% silica (microparticles) with and without CNT always show increase in coefficient of friction at the expense of wear rate. However, samples containing only CNT have the lowest wear rate with the increase in coefficient of friction. Sliding distance studies also provide the information on wear rates which were ever changing at different sliding distances whereas average coefficient of friction did not vary throughout the tests. SEM observations of wear surfaces showed different wear morphologies when reinforcement (CNT or SiO2) incorporated into the composites either alone or in combination.

Item Type:Article
Keywords:Carbon nanotubes; silica; wear behavior
Journal:Sains Malaysiana
ID Code:7189
Deposited By: ms aida -
Deposited On:19 Jun 2014 13:22
Last Modified:14 Dec 2016 06:43

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