Journal
ACTA MATERIALIA
Volume 54, Issue 12, Pages 3369-3374Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2006.03.026
Keywords
polymer matrix composites; dynamic mechanic analysis; maximum packing fraction of particles
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We discuss the effect of compositions of two sizes of silica particles on the thermo-viscoelastic properties of epoxy composites according to Lewis and Nielsen's mixture law and its particle packing model. Epoxy composites containing varied composition ratios Phi(SP) of two sizes of spherical silica particles. 0.24 and 1.56 mu m were prepared at it fixed volume fraction (V-P = 0.30). The thermo-viscoelastic properties of these composites and neat epoxy resin measured front 123, to 53,5 K were investigated using Lewis and Nielsen's law with the maximum packing fraction of particles phi(max) of Ouchiyania and Tanaka's model. Our results revealed that thermo-viscoelasticity was affected by the maximum packing fraction below the glass transition temperature T,. and the mobility of matrix resin at T > T-g. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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