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The Preparation and Characterization of a Novolac Cured Epoxy-Clay Nanocomposites

Published online by Cambridge University Press:  01 February 2011

Tsung-Yen Tsai
Affiliation:
yen@cycu.edu.tw, Chung Yuan Christian University, Dept of Chemistry & Center for Nanotechnology, 200, Chung Pei Road, Chung Li City, TAIWAN, 32023, Taiwan, 886-3-2653342, 886-3-2653399
Shau-Tai Lu
Affiliation:
g9201305@cycu.edu.tw, Chung Yuan Christian University, Dept of Chemistry, Center for Nanotechnology, R&D Center for Membrane Technology, 200, Chung Pei Road, Chung Li City, TAIWAN, 32023, Taiwan
Chih-Hung Li
Affiliation:
porsche@chemer.cycu.edu.tw, Chung Yuan Christian University, Dept of Chemistry, Center for Nanotechnology, R&D Center for Membrane Technology, 200, Chung Pei Road, Chung Li City, TAIWAN, 32023, Taiwan
Chin-Jei Huang
Affiliation:
jeffrey7272@hotmail.com, Chung Yuan Christian University, Dept of Chemistry, Center for Nanotechnology, R&D Center for Membrane Technology, 200, Chung Pei Road, Chung Li City, TAIWAN, 32023, Taiwan
Li-Chun Chen
Affiliation:
kimis@ms52.url.com.tw, Chung Yuan Christian University, Dept of Chemistry, Center for Nanotechnology, R&D Center for Membrane Technology, 200, Chung Pei Road, Chung Li City, TAIWAN, 32023, Taiwan
Jia-Xiang Liu
Affiliation:
qeeqeeqee@hotmail.com, Chung Yuan Christian University, Dept of Chemistry, Center for Nanotechnology, R&D Center for Membrane Technology, 200, Chung Pei Road, Chung Li City, TAIWAN, 32023, Taiwan
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Abstract

Intercalated or exfoliated nanocomposites were composed by the novolac cured epoxy and one of three different kinds of layered silicates, such as montmorillonite (PK-802), saponite (Semecton-SA) and nontronite (PK-805). The bi-functional modifiers (PI/BEN or MI/BEN) with different ratio, which contained one of the promoters (2-phenylimidazole, PI and 2-methylimidazole, MI) of epoxy and benzalkonium chloride (BEN), were intercalated into the gallery regions of pure clays at the same time and followed by a crosslinking reaction. The properties of novolac cured epoxy/clay nanocomposites were characterized by wild-angle X-ray diffraction (WAXRD), thermal analysis (TGA/DSC), coefficiency of thermal expansion (TMA), mechanical properties (DMA), and transmission electron microscopy (TEM). According to the measurement, these novolac cured epoxy-clay nanocomposites have shown the significant improvement in the thermal, mechanical and barrier properties.

Type
Research Article
Copyright
Copyright © Materials Research Society 2006

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