Improvement of Tribological Properties of Natural Rubber Filled With Waste Tire Pyrolysis Carbon Black Treated by Plasma

Authors:
Publisher website
Google Scholar
Abstract
The erosion and polarization effects were much more evident with the increase in plasma power for pyrolysis carbon black (CBp) arising from waste tire. However, a strong fusion effect appeared when the plasma power reached 600 W. CBp‐400 W had the best dispersion in the rubber matrix and the deepest strong interaction with molecular chains. However, CBp‐600 W had the worst dispersion and the most remarkable weak interaction with the rubber matrix. Compared with NR/CBp‐0 W, the tensile strength increased by 16.6%, and the DIN abrasion volume decreased by 8.1% for the NR/CBp‐400 W. Its coefficient of friction (COF) and abrasion resistance enhanced by 22.6%/56.5% (7 N: 0.25 m/s), 13.5%/30.1% (7 N: 0.5 m/s), 7.6%/28.8% (14 N: 0.25 m/s), and 20.3%/34.1% (14 N: 0.5 m/s) under dry friction conditions. The steady COF of NR/CBp‐400 W increased by 53% compared with NR/CBp‐0 W under wet friction conditions, and the regulation of the COF was in accordance with that of the tanδ at 0°C detected by dynamic mechanical measurement. In this work, it was proved that 400 W was the optimized plasma power. Filler dispersion and strong filler–polymer interaction were crucial factors in enhancing abrasion resistance. Additionally, this research introduced a novel approach for assessing the wet‐slip resistance of rubber materials.
Funding Information
  • National Natural Science Foundation of China ((51503114))
  • Key Technologies Research and Development Program (2018YFC1902604)

This publication has 38 references indexed in Scilit: