Effects of hygrothermally decomposed polyurethane on the curing and mechanical properties of carbon black-filled epoxidized natural rubber vulcanizates

Z. A. Mohd Ishak, P. Y. Wan, P. L. Wong, Z. Ahmad, U. S. Ishiaku, J. Karger-Kocsis

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Hygrothermally decomposed polyurethane (HD-PUR) was mixed up to 20 phr in epoxidized natural rubber (with 50 mol% epoxidation; ENR50) recipes, and the curing and mechanical behaviors were studied. Mechanical testing of the ENR50/HD-PUR vulcanizates determined the tensile, tear, compression-set, hardness, abrasion, hysteresis, and resilience properties. No significant changes were observed in the tensile properties with the incorporation of HD-PUR. The ENR50 compounds showed an increase in compression set with increasing HD-PUR content. Rubbers cured by a semi-efficient vulcanization system gave the best overall performance. A further improvement in curing and mechanical properties was achieved by the carbon black grade N330 being replaced with a more active grade (N375).

Original languageEnglish
Pages (from-to)2265-2276
Number of pages12
JournalJournal of Applied Polymer Science
Volume84
Issue number12
DOIs
Publication statusPublished - Jun 20 2002

Keywords

  • Epoxidized natural rubber (ENR)
  • Hygrothermally decomposed poly(ester urethane)
  • Poly(ester urethane) (PUR)
  • Recycling
  • Rubber characteristics
  • Rubber vulcanization

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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