Irradiated rubber composite with nano and micro fillers for mining rock application

Hanan M. Eyssa; Wael S. Mohamed; Mai M. El-Zayat

doi:10.1515/ract-2018-2989

Article

Irradiated rubber composite with nano and micro fillers for mining rock application

Hanan M. Eyssa , Wael S. Mohamed and Mai M. El-Zayat

Published/Copyright: February 13, 2019

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From the journal Radiochimica Acta Volume 107 Issue 8

Abstract

In this work, nanosilica and micro carbon black (CB) as a fillers were used to improve the properties of styrene butadiene rubber/natural rubber blends (SBR/NR) crosslinked by γ radiation. Nanosilica was prepared from silica sand and used as eco-friendly material. These composites were characterized by field emission scanning electron microscopy (FESEM) and the measurements of the physic-mechanical and thermal properties were measured. Field emission scanning electron microscopy showed that the composites reinforced by nanosilica and the measurements of the CB are uniformly dispersed in the blends matrix. The results showed that the physico-mechanical and thermal properties were improved indicating a good interaction between the fillers and rubber matrix. The volume fraction measurements confirmed the formation of crosslinking network structure. Meanwhile, the reinforcement of SBR/NR blend loaded with nanosilica showed improved mechanical than blend loaded with both the nanosilica/carbon black and the CB alone. The highest enhancement was obtained for the three fillers by using a concentration of 35 phr at a dose of 150 kGy of γ-irradiation. Thermogravimetric analysis (TGA) indicated that the thermal stability of SBR/NR blend reinforced by nanosilica is higher than those blends reinforced with combined filler the silica. It was also found that the irradiated SBR/NR nanocomposites were more stable than the un-irradiated ones.

Keywords: Crude oil; γ irradiation; mechanical and physical properties; nano-silica sand; carbon black; SBR/NR

Conflict of interest: The authors have no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript.

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Received: 2018-05-19

Accepted: 2019-01-14

Published Online: 2019-02-13

Published in Print: 2019-07-26

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https://doi.org/10.1515/ract-2018-2989

Keywords for this article

Crude oil; γ irradiation; mechanical and physical properties; nano-silica sand; carbon black; SBR/NR