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Antioxidant effects during blade abrasion of natural rubber
Author(s) -
Pulford C. T. R.
Publication year - 1983
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1983.070280225
Subject(s) - abrasion (mechanical) , materials science , natural rubber , composite material , carbon black , decomposition , blade (archaeology) , chemistry , organic chemistry , structural engineering , engineering
A blade abrasion device similar to that developed by Champ, Southern, and Thomas has been used to determine the wear rates of everal simple carbon black‐filled natural rubber materials over a range of frictional loading at room temperature in air. The materials show two mechanisms of wear depending on the amount of frictional load applied. Smearing, the mechanochemical decomposition of the wearing surface leading to a tarlike wear product, occurs at low frictional loads and is replaced by particulate debris created by cohesive rupture at higher frictional loading. It was found that a representative alkyl/aryl paraphenylenediamine and hindered phenol antioxidant were only effective in reducing the rate of wear during smearing, when degradation processes are important. Furthermore, the reduction in wear rate during smearing was quite similar for these two antioxidants.