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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Improving the Abrasion Resistance of “Green” Tyre Compounds
Author(s)
Teku Zakwan Zaeimoedin1, 2 and Jane Clarke1
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DOI:10.17265/1934-8975/2017.10.003
Affiliation(s)
1. Department of Materials, Loughborough University, Loughborough LE11 3TU, United Kingdom
2. RRIM Research Station, Malaysian Rubber Board, Sungai Buloh 47000, Selangor, Malaysia
ABSTRACT
Since the introduction of “green tyres” in the early 90’s, the use of
silica as a reinforcing filler, along with a silane coupling agent, has spread
and grown worldwide. The greatest advantage of using silica over carbon black
as reinforcing filler in a tyre tread compound is that a lower rolling
resistance is achieved, while maintaining good wet traction. However, a previous study has shown that the
wear resistance of a silica filled ENR (epoxidised natural rubber) compound was not as high as those of
conventional OESBR (oil extended styrene
butadiene rubber) and NR/BR compounds used in passenger car and truck tyre
treads. In this work, with
the aim of improving abrasion resistance, the effect of blending BR (butadiene rubber)
into a silica filled ENR compound was studied. Blends with 0 to 30 phr BR were
prepared in a Polylab Haake internal mixer. The rheological properties of the compounds were measured using a
Mooney viscometer and oscillating-disc rheometer. The hardness, tensile
strength and DIN abrasion resistance were also measured. The results showed
that the ENR/silica compound properties such as tensile strength and hardness
were as good as those of the conventional compounds. However, the most
important finding was that abrasion resistance increased significantly with BR
content, exceeding that of the conventional compound at BR: ENR ratios of greater
than 20:80.
KEYWORDS
ENR, BR, silica, abrasion resistance, tyre tread.
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