Effect of Technically Specified Rubber (TSR) Variations on Rheological Properties of Soft Compound of Solid Tires
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Date
2018
Journal Title
Journal ISSN
Volume Title
Publisher
Uva Wellassa University of Sri Lanka
Abstract
The soft compound of solid tires is used to produce the middle section (cushion) of
the solid tires which enhanced to provide the cushioning effect. Medium hardness,
low heat buildup, high elasticity and high resilient are the most expected
characteristics from the soft compound. TSR from different suppliers may lead to
unexpected deviations in the theological properties of the soft compound produced.
Such deviations in the rheological properties significantly affect the performance
of soft compound. The objectives of this study were to investigate the effect of TSR
variations of suppliers on rheological properties of soft compound and identify the
raw rubber property or properties which cause such variations. Rheological
properties such as t52 (Scorch time) and tc90 (Optimum Cure time) of soft
compound produced from TSR supplied by three different suppliers (thirty samples
each) were measured to check the effect of TSR variation of the suppliers on
rheological properties of soft compound. Raw rubber properties such as dirt content,
ash content, volatile matter content, nitrogen content, Wallace plasticity (Po) and
Plasticity Retention Index (PRI) of three samples of TSR from each supplier were
measured to identify the cause of the TSR variations. The results revealed that the
rheological properties of the soft compound are significantly affected by the TSR
variation of the supplier (p < 0.05). Dirt content, ash content, volatile matter
content, nitrogen content were having a significant effect for the resulted variation
of TSR (p < 0.05). Findings of this study will be useful in selecting the best TSR
supplier to produce best soft compound in solid tire manufacturing.
Keywords: Rheological properties, Soft compound, Solid tires, Technically Specified
Rubber
Description
Keywords
Materials Sciences, Mineral Sciences