Effect of clay dispersion on the rheological properties and flammability of polyurethane-clay nanocomposite elastomers

M. Berta, A. Saiani, C. Lindsay, R. Gunaratne

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Polyurethane-clay nanocomposite elastomers were synthesized using polyol-clay blends with different levels of dispersion, which affected the final elastomer microstructure. A PU-clay microcomposite elastomer containing partially dispersed clay showed poorer mechanical and similar fire properties to the unmodified polyurethane. More complete dispersion of the clay into the polyol led to an exfoliated structure in the final elastomer. This showed a higher modulus and kept a visco- elastic behavior to higher temperature than the pristine PU. The enhancement of mechanical and thermal properties in the nanocomposite elastomer can be attributed to the degree of clay exfoliation, and this also prevented dripping during the UL 94 fire test. © 2009 Wiley Periodicals, Inc.
    Original languageEnglish
    Pages (from-to)2847-2853
    Number of pages6
    JournalJournal of Applied Polymer Science
    Volume112
    Issue number5
    DOIs
    Publication statusPublished - 5 Jun 2009

    Keywords

    • Flame retardance
    • Microstructure
    • Nanocomposites
    • Polyurethanes
    • Rheology

    Fingerprint

    Dive into the research topics of 'Effect of clay dispersion on the rheological properties and flammability of polyurethane-clay nanocomposite elastomers'. Together they form a unique fingerprint.

    Cite this