Enhanced acoustic damping in flexible polyurethane foams filled with carbon nanotubes

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 aff...

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Vydáno v:Composites science and technology Ročník 69; číslo 10; s. 1564 - 1569
Hlavní autoři: Verdejo, R., Stämpfli, R., Alvarez-Lainez, M., Mourad, S., Rodriguez-Perez, M.A., Brühwiler, P.A., Shaffer, M.
Médium: Journal Article Konferenční příspěvek
Jazyk:angličtina
Vydáno: Kidlington Elsevier Ltd 01.08.2009
Elsevier
Témata:
A. Carbon nanotubes
A. Nanocomposite
A. Polymer foam
Applied sciences
Cellular
Composites
Exact sciences and technology
Forms of application and semi-finished materials
P. Damping properties
Polymer industry, paints, wood
Technology of polymers
A. Nanocomposite
A. Polymer foam
P. Damping properties
A. Carbon nanotubes
Cell structure
Strengthening
Blowing agent
Carbon nanotubes
Mechanical properties
Dispersion reinforced material
Tensile property
Compressive strength
Acoustic absorption
Experimental study
Cellular plastic
Composite material
Hot pressing
Foaming process
Polyurethane
Concentration effect
Nanocomposite
Plastics
ISSN:0266-3538, 1879-1050
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Shrnutí: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%.
Bibliografie:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0266-3538
1879-1050
DOI:10.1016/j.compscitech.2008.07.003