期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 69, 期 10, 页码 1564-1569出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2008.07.003
关键词
Nanocomposite; Polymer foam; Carbon nanotubes; Damping properties
Flexible polyurethane (PU) foams, with loading fractions of up to 0.2 wt% carbon nanotubes (CNTs), were made by free-rising foaming using water as blowing agent. Electron microscopy revealed an open cellular structure and a homogeneous dispersion of CNTs, although the incorporation of nanofiller affected the foaming process and thus the final foam density and cellular structure. The compressive response of the foams did not show an unambiguous improvement with CNT content due to the variable foam structure. However, dense films generated by hot pressing the foams indicated a significant intrinsic reinforcement of the polymer, even at low loadings of CNTs. Most significantly, CNTs were found to increase the acoustic activity monotonically at concentrations up to 0.1 wt%. (C) 2008 Elsevier Ltd. All rights reserved.
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