Utilization of Organoclay as Secondary Filler in Silica-reinforced Natural Rubber Tire Tread Compounds

Suppachai Sattayanurak, Kannika Sahakaro (Contributor), Wisut Kaewsakul (Contributor), Wilma K. Dierkes (Contributor), Louis Antoine Eugene Maria Reuvekamp (Contributor), Anke Blume (Contributor), Jacobus W.M. Noordermeer (Contributor)

Research output: Contribution to conferencePaper

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Abstract

Silica-reinforced Natural Rubber (NR) truck tire tread compounds are investigated using organoclay (OC) as secondary filler. By varying mixer temperature settings at silica/OC ratio of 45/10 phr, dump temperatures are reached of approximately 120, 140, 150 and 160oC. The increased dump temperature leads to a better silanization reaction to result in lower mixing torque, Mooney viscosity and Payne effect. The optimum mixing dump temperature was found to be around 150oC. By varying the loadings of OC in the silica-filled NR compounds from 0 to 36 wt% relative to total filler amount, the increased OC loadings decrease the Payne effect and compound viscosities, significantly shorten scorch and cure times and raise the tan delta at -20oC and 0oC as indications for ice traction and wet skid resistance of tire treads made thereof. The optimum loading of OC of 18 wt% relative to total filler content shows better Payne effect, cure rate index, tan delta at -20oC and 60oC indicative for rolling resistance, and DIN abrasion resistance index. The results indicate that the use of this hybrid filler may provide tires with better wet traction, lower rolling resistance and wear resistance compared to the pure silica-filled system.
Original languageEnglish
Number of pages28
Publication statusPublished - Oct 2019
EventFall 196th Technical Meeting of Rubber Division, ACS 2019 - Cleveland, United States
Duration: 10 Oct 201912 Oct 2019
Conference number: 196

Conference

ConferenceFall 196th Technical Meeting of Rubber Division, ACS 2019
Abbreviated titleACS 2019
CountryUnited States
CityCleveland
Period10/10/1912/10/19

Keywords

  • silica
  • organoclay
  • hybrid filler
  • natural rubber
  • tire tread

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