High mechanical performance polyurea/organoclay nanocomposites

Dongyu Cai, Mo Song

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

This study reported that the intercalation of C20 organoclay was achieved in polyurea (PUr) matrices. The significant reinforcement was observed in a highly crosslinked PUr (HPUr), in which the Young's modulus, stress and elongation at break was improved by ~40%, ~110% and ~50%, respectively, with the addition of 5. wt% C20. The energy dissipation of HPUrs was more than doubled by 5. wt% C20 at the strain of 50% and 100%. It was also found that the reinforcement was not equally significant in a lowly crosslinked PUr, indicating that macromolecular structure of the PUr matrices was important for optimizing the nano-effect in the nanocomposites.

Original languageEnglish
Pages (from-to)44-48
Number of pages5
JournalComposites Science and Technology
Volume103
DOIs
StatePublished - 28 Oct 2014
Externally publishedYes

Keywords

  • A. Nano comoposites
  • A. Polymer-matrix composites (PMCs)
  • B. Mechanical properties
  • B. Stress/strain curves

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