A truck tyre retread compound, based on 80NR/20BR with a semi-EV cure system and 6.0 parts phr of stearic acid, exhibits much better reversion resistance than a similar compound with only 2.0 parts phr of stearic acid. Improvements in laboratory abrasion resistance, heat generation and most physical properties have also been observed for this modified compound in test pieces subjected to the sort of overcure typical in truck tyre retreads. In highway fleet trials, truck tyre retreads made from these two natural rubber compounds and an SBR55/BR45 compound were fitted to the third and fourth drive axles of tipper trucks. On the higher severity fourth axle both natural rubber compounds displayed superior tread wear to the synthetic one. On the lower severity third axle the high stearic acid compound gave tread wear which was significantly better than that of the normal semi-EV compound and almost matched that of the synthetic compound.

  • Availability:
  • Supplemental Notes:
    • Paper was given at the ACS Rubber Division Meeting, October 1984, Houston, Texas. It will also be printed in Rubber Chemistry and Technology during 1985.
  • Corporate Authors:

    Malaysian Rubber Producers' Research Association

    Tun Abdul Razak Laboratory
    Brickendonbury, Hertford SG13 8NL,   England 
  • Authors:
    • BARNARD, D
    • Baker, CSL
    • Wallace, I R
  • Publication Date: 1985

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 19-26
  • Serial:
    • NR Technology
    • Volume: 16
    • Publisher: Malaysian Rubber Producers' Research Association
    • ISSN: 0307-9007

Subject/Index Terms

Filing Info

  • Accession Number: 00451891
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: Part 1 Pub 1054, HS-039 171
  • Files: HSL, USDOT
  • Created Date: Dec 31 1985 12:00AM