Technical Paper Archive


This site contains all papers presented at Rubber Division, ACS Technical Meetings from 2000-2018. Meetings prior to 2000 are incomplete and papers are added as they are digitized.


For older papers not listed here, please send your request, including Meeting Year, Title, Author, and Paper # to: cbrady@rubber.org


View Your Rubber Division Account

Optimization of Natural Rubber OTR Tread Compound with Multi-wall Carbon Nanotubes and Oil

B13 krupp paper

Event: 198th Technical Meeting - Fall 2020
Location: Virtual
Date: October 19, 2020
Author: August Krupp
Paper Number: B13

Price: $20.00

  • Previous studies demonstrated tailored multi-wall carbon nanotubes (MWCNTs), Molecular RebarĀ® (MR), significantly improved the wear resistance of elastomer compounds, such as off-the-road (OTR) tire treads. A facile delivery system for the Molecular Rebar is to use the oil commonly used in rubber formulation to create a masterbatch, with the product termed MRO. These oils are typically naphthenic, residual aromatic extract (RAE), or treated distillate aromatic extract (TDAE). However, some portions of the targeted wear-resistant, high-performance rubber market utilize oil-less formulations, particularly formulas comprised wholly of filled natural rubber for ultra-tough compounds. Addition of small quantities of oil to typically oil-less formulations can improve processability but may cause a decrease in hardness and abrasion resistance. This paper details an experimental design to explore the relationship of properties between MR, CB, and oil in a 100% NR OTR formulation. From this design, an optimized formula with MR provides 25%+ cut & chip resistance, with ~5% change to rolling resistance. This result shows that no segment of the wear-resistant rubber industry should be considered off-limits for the adoption of MRO; there are new rules of optimization for every OTR formulation.

    Papers from 198th Technical Meeting - Fall 2020

    Items from 198th Technical Meeting - Fall 2020