# DIFFUSION OF THE CURING AGENT THROUGH TWO EPDM RUBBER SHEETS WITH DIFFERENT % PEROXIDE DURING THEIR SIMULTANEOUS CURE

> Title: DIFFUSION OF THE CURING AGENT THROUGH TWO EPDM RUBBER SHEETS WITH DIFFERENT % PEROXIDE DURING THEIR SIMULTANEOUS CURE Page Range: p.495-504 Author(s): El Brouzi A; Granger R; Vergnaud J M File size: 423K Download the pdf (subscribers only) Buy the pdf...

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Published: 2009-08-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**Title: DIFFUSION OF THE CURING AGENT THROUGH TWO EPDM RUBBER SHEETS WITH DIFFERENT % PEROXIDE DURING THEIR SIMULTANEOUS CURE**
 Page Range: p.495-504
 Author(s): El Brouzi A; Granger R; Vergnaud J M
 File size: 423K
 ![](http://dload.gif) [Download the pdf](http://journals.asp?Page=111&JournalDownload=ON&JournalType=ppc&JournalIssue=ppc17-8&JournalID=100966&JIP=) (subscribers only)
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 Journal: Polymers and Polymer Composites
 Issue Year: ppc
 Volume: 17
 Issue No: No.8

**Abstract**
 An investigation was carried out into the diffusion of a peroxide (Perkadox 14-40) through two EPDM sheets (one containing 2% and the other 10% peroxide), pressed together and cured in a heated mould kept at 187 degrees Centigrade. The results obtained are discussed in terms of a gradient of hardness through the thickness of the sheets, the swelling behaviour of the sheets in toluene and the resistance to liquid and swelling of the bi-layer rubber system. Modelling of the process of absorption and evaporation was also performed, explaining torsion of the bi-layer sheet observed during absorption and its stability. This transfer of curing agent during curing is applicable to the retreading of truck tyres with a new rubber band. 19 refs.

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