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Novel flame retardant epoxy/clay nanocomposites prepared with a pre-ground phosphorus-containing organoclay

Published online by Cambridge University Press:  31 January 2011

Y.W. Chen-Yang ,
W.S. Wang ,
J.C. Tang ,
Y.W. Wu  and
H.S. Chen
Y.W. Chen-Yang*
Affiliation:
Department of Chemistry and Center for Nanotechnology, Chung Yuan Christian University, Chung-Li City, Taoyuan County 320, Taiwan, Republic of China
W.S. Wang
Affiliation:
Department of Chemistry and Center for Nanotechnology, Chung Yuan Christian University, Chung-Li City, Taoyuan County 320, Taiwan, Republic of China
J.C. Tang
Affiliation:
Department of Cosmetic Science, Chin Min Institute of Technology, Tou-Fen Township, Miao-Li County 351, Taiwan, Republic of China
Y.W. Wu
Affiliation:
Department of Chemistry and Center for Nanotechnology, Chung Yuan Christian University, Chung-Li City, Taoyuan County 320, Taiwan, Republic of China
H.S. Chen
Affiliation:
Department of Chemistry and Center for Nanotechnology, Chung Yuan Christian University, Chung-Li City, Taoyuan County 320, Taiwan, Republic of China
*
a)Address all correspondence to this author. e-mail: yuiwhei@cycu.edu.tw
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Abstract

A series of novel epoxy/clay nanocomposites (EPOCg-x) were prepared with a selected epoxy resin and x wt% of a mechanically ground phosphorus-containing organoclay (POCg). The results of x-ray diffraction (XRD), Fourier transform infrared, and field emission scanning electron microscopy measurements showed that POCg was size-reduced, and its silicate layers were disordered by the grinding process. The results of XRD and transmission electron microscopy of the nanocomposites suggested that the POCg particles were well-dispersed in the epoxy matrix with a combination of intercalation and destruction platelet structures. The as-prepared nanocomposites remained thermally stable above 376 °C. Furthermore, the storage modulus in the glass state, surface hardness, char residue, and limiting oxygen index (LOI) of the as-prepared nanocomposite were all significantly increased with increasing the POCg content. The large increment of LOI, 10 units higher than that of neat epoxy, indicated that an extraordinary enhancement on flame retardancy was obtained from EPOCg-5.

Keywords

CompositeIntercalationNanostructure
Type
Articles
Information
Journal of Materials Research , Volume 23 , Issue 6 , June 2008 , pp. 1618 - 1630
Copyright
Copyright © Materials Research Society 2008

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