PREPARATION AND CHARACTERIZATION OF EPDM RUBBER MIXTURE FOR A HEAT RESISTANT CONVEYOR BELT COVER

Year 2017, Volume: 18 Issue: 2, 507 - 520, 30.09.2017

Alev Akpinar Borazan

https://doi.org/10.18038/aubtda.296523

Cited By: 7

Abstract

In this paper, the
EPDM rubber-based dough recipe for a conveyor belt used in high temperature
conditions was developed. As a first step, the silica loading effect on the mechanical and rheological properties
was determined.  After selecting the
proper coating dough recipe, dough properties were investigated for filler
mica, instead of silica, and the influence of paraffinic oil was tested for
both silica and mica fillers. The properties of the EPDM rubber blend were
investigated with rheometer
tests on the semi-finished materials and with mechanical and physical tests (tensile
strength, elongation at break, density, hardness, abrasion, heat ageing tests) on
the finished coating materials after a vulcanization process. Thermal
degradation behaviors of materials were analyzed by the thermal gravimetric analysis
(TGA) system, and determination of chemical structure was analyzed by Fourier
transform infrared spectroscopy (FTIR). The physico-mechanical
characteristics of EPDM rubber blends were increased with silica loadings. EPDM rubber
demonstrates thermal resistance in the temperature range of 150^oC –
160^oC under normal conditions. As a result of the studies conducted,
the heat resistance of the coating rubber material was raised to 200^oC
by adding silica and paraffinic oil with a higher flash point into the EPDM dough
mixture formulae.

Keywords

EPDM, Filler, Rheometer test, Mechanical properties, Heat-resistance

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