Rheological and mechanical properties of percolated cyanate ester nanocomposites

The rheological properties and mechanical properties of percolated cyanate ester monomer/layered silicate mixtures are reported. A number of different cation exchanged montmorillonites were examined in an effort to achieve maximal montmorillonite delamination. The dispersion throughout the cyanate e...

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Bibliographic Details
Published in:Polymer (Guilford) 2005-09, Vol.46 (19), p.8011-8017
Main Authors: Wooster, Tim J., Abrol, Simmi, MacFarlane, Douglas R.
Format: Article
Language:English
Subjects:
Applied sciences
Composites
Cyanate ester
Exact sciences and technology
Forms of application and semi-finished materials
Montmorillonite
Polymer industry, paints, wood
Rheology
Technology of polymers
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Summary:The rheological properties and mechanical properties of percolated cyanate ester monomer/layered silicate mixtures are reported. A number of different cation exchanged montmorillonites were examined in an effort to achieve maximal montmorillonite delamination. The dispersion throughout the cyanate ester of a montmorillonite with phenylated ammonium cations (2MBHT MMT) results in the formation of a percolated network. The rheology of this percolated network undergoes a viscous liquid to elastic solid transition at 4wt% montmorillonite. The percolation of the montmorillonite in the cyanate ester results in a significant improvement in crack resistance (80%) without a sacrifice of flexural strength.
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2005.06.106