Polymer Degradation and Stability, Volume (129), Year (2016-4) , Pages (56-62)

Title : ( A new approach for reclaiming of waste automotive EPDM rubber using waste oil )

Authors: Malihe Sabzekar , Gholamhossein Zohuri , Mahdi Pourafshari Chenar , Seyed Mohammad Mahdi Mortazavi , Majid Kariminejad , Said Asadi ,

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The disposal of polymeric and especially rubber materials is an important global issue. In this work we have used disulfide oil (DSO), the oily waste produced in gas refineries, as a chemical agent for mechanochemical reclaiming of waste EPDM rubber at a specific operation condition. The devulcanization reaction was performed using different concentrations of DSO (5 and 7 phr) and different temperatures (220, 250 and 290 C). The results confirmed the effectiveness of DSO in decreasing the crosslink density up to 73% at specific reaction conditions. Subsequently, two different portions of the devulcanized rubber (RR) (20 and 40 wt %) were blended with the virgin EPDM rubber to assess the reusability of the recycled product. Accordingly, replacing 40 wt% of RR had no effect on the scorch and the optimum curing time and similar curing rates were obtained. Moreover, the mechanical properties of the revulcanized blends were not worsened and surprisingly were improved in some cases including tensile strength and elongation at break up to 14% and 26% respectively. These results can be used to propose a new method for solving both rubber and disulfide oil disposal issues.

Keywords

, Waste EPDM, Mechanochemical reclaiming, DSO, Mechanical
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@article{paperid:1055832,
author = {Sabzekar, Malihe and Zohuri, Gholamhossein and Pourafshari Chenar, Mahdi and Seyed Mohammad Mahdi Mortazavi and Majid Kariminejad and Said Asadi},
title = {A new approach for reclaiming of waste automotive EPDM rubber using waste oil},
journal = {Polymer Degradation and Stability},
year = {2016},
volume = {129},
month = {April},
issn = {0141-3910},
pages = {56--62},
numpages = {6},
keywords = {Waste EPDM; Mechanochemical reclaiming; DSO; Mechanical properties},
}

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%0 Journal Article
%T A new approach for reclaiming of waste automotive EPDM rubber using waste oil
%A Sabzekar, Malihe
%A Zohuri, Gholamhossein
%A Pourafshari Chenar, Mahdi
%A Seyed Mohammad Mahdi Mortazavi
%A Majid Kariminejad
%A Said Asadi
%J Polymer Degradation and Stability
%@ 0141-3910
%D 2016

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