Optimization effect of micro hardness by nanoclay clusters in nanoclay/epoxy composites

Lam, Chun-Ki and Lau, Kin-Tak (2009) Optimization effect of micro hardness by nanoclay clusters in nanoclay/epoxy composites. Journal of Thermoplastic Composite Materials, 22 (2). pp. 213-225. ISSN 0892-7057


Nanoclay/epoxy composites have been investigated extensively on their mechanical and thermal properties over the last decade. Researches have been mainly focused on the control of manufacturing a fully exfoliated inter-planar structure of nanoclay platelets inside epoxy resin in order to achieve the maximum mechanical strength of the composites. Nevertheless, in reality, sole dominant structures (both exfoliated and intercalated) are hardly produced in the manufacturing process. Nanoclays would be easily agglomerated to form tiny nanoclay clusters, especially in the extrusion and injection molding processes of epoxy-based components. This paper studies the mechanical performance in terms of micro-hardness of nanoclay/epoxy composites with different nanoclay contents. The size of nanoclay clusters in the composites vary with different nanoclay contents observed by the microscopic examination. The results show that the micro-hardness of the composites could be enhanced by adding a small amount of nanoclays. However, there is an optimal limit wherein the maximum hardness of the composites is measured. Continuously increasing the amount of nanoclay could ultimately decrease the hardness of the composites.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2009 SAGE Publications. Permanent restricted access to published version in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 24 Jul 2014 05:13
Last Modified: 17 Oct 2014 01:43
Uncontrolled Keywords: hardness; nanoclays; nanocomposites; epoxy resins; extrusion moulding; injection moulding; resins; thermodynamic properties
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
09 Engineering > 0910 Manufacturing Engineering > 091006 Manufacturing Processes and Technologies (excl. Textiles)
10 Technology > 1007 Nanotechnology > 100708 Nanomaterials
Socio-Economic Objective: B Economic Development > 86 Manufacturing > 8606 Industrial Chemicals and Related Products > 860608 Rubber and Synthetic Resins
Identification Number or DOI: 10.1177/0892705708091856
URI: http://eprints.usq.edu.au/id/eprint/18923

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