Table of Contents
Smart Materials Research
Volume 2011 (2011), Article ID 912436, 11 pages
http://dx.doi.org/10.1155/2011/912436
Research Article

Peculiarities of Shape Recovery in Polymer Composites with Compacting Filler

Donetsk Physics and Technology Institute, National Academy of Sciences of Ukraine, 72 R. Luxemburg Street, 83114 Donetsk, Ukraine

Received 16 October 2010; Revised 15 December 2010; Accepted 23 January 2011

Academic Editor: Xianglong Meng

Copyright © 2011 V. A. Beloshenko and Yu. V. Voznyak. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Peculiarities of the shape memory effect development in composites based on the epoxy polymer and various fillers, such as thermoexpanded graphite, aerosils, metallized graphite, and basalt flakes, have been investigated. It has been determined that straining followed by the shape recovery of composites is accompanied by changes in their volume. Extent and character of the changes depend on the ability of fillers to compaction under pressure, deformation scheme, adsorption ability of the filler. It is shown that the combined deformation consisting of compression and stretching of specimens in different sequence gives structural states for which the longitudinal strain-transverse strain ratio can take zero, positive, or negative values.