TY - JOUR
T1 - Thermoanalytical characterization of epoxy matrix-glass microballoon syntactic foams
AU - Lin, Tien Chih
AU - Gupta, Nikhil
AU - Talalayev, Anton
N1 - Funding Information:
Acknowledgements The research work is supported by the National Science Foundation grant CMMI-0726723. The authors wish to express gratitude to the 3M Corporation for supplying microbal-loons and technical information related to them. Authors thank Momchil Dimchev for help in specimen fabrication. Support of Othmer Institute of Interdisciplinary Studies to the undergraduate students is acknowledged.
PY - 2009/3
Y1 - 2009/3
N2 - Syntactic foams are finding new applications where their thermal stability and high temperature response are important. Therefore, the high temperature response of these advanced composites needs to be characterized and correlated with various material parameters. The present study is aimed at evaluating the effect of microballoon (hollow particle) volume fraction (Φ) and wall thickness (w) on thermoanalytical characteristics of epoxy matrix syntactic foams containing glass microballoons. These composites are characterized to determine the glass transition temperature (T g), the weight loss, and the char yield. It is observed that T g decreases and the char yield increases due to the presence of microballoons in the resin. The T g is increased with an increase in Φ but is not significantly affected by w. The thermal stability is increased by increasing w and is relatively less sensitive to Φ. Understanding the relations between thermal properties of syntactic foams, the microballoon wall thickness, and microballoon volume fraction will help in developing syntactic foams optimized for mechanical as well as thermal characteristics. Due to the increased interest in functionally graded syntactic foams containing a gradient in microballoon volume fraction or wall thickness, the results of the present study are helpful in better tailoring these materials for given applications.
AB - Syntactic foams are finding new applications where their thermal stability and high temperature response are important. Therefore, the high temperature response of these advanced composites needs to be characterized and correlated with various material parameters. The present study is aimed at evaluating the effect of microballoon (hollow particle) volume fraction (Φ) and wall thickness (w) on thermoanalytical characteristics of epoxy matrix syntactic foams containing glass microballoons. These composites are characterized to determine the glass transition temperature (T g), the weight loss, and the char yield. It is observed that T g decreases and the char yield increases due to the presence of microballoons in the resin. The T g is increased with an increase in Φ but is not significantly affected by w. The thermal stability is increased by increasing w and is relatively less sensitive to Φ. Understanding the relations between thermal properties of syntactic foams, the microballoon wall thickness, and microballoon volume fraction will help in developing syntactic foams optimized for mechanical as well as thermal characteristics. Due to the increased interest in functionally graded syntactic foams containing a gradient in microballoon volume fraction or wall thickness, the results of the present study are helpful in better tailoring these materials for given applications.
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U2 - 10.1007/s10853-008-3074-3
DO - 10.1007/s10853-008-3074-3
M3 - Article
AN - SCOPUS:62649101162
VL - 44
SP - 1520
EP - 1527
JO - Journal of Materials Science
JF - Journal of Materials Science
SN - 0022-2461
IS - 6
ER -