Investigation of Physical and Mechanical Properties of Ethylene Propylene Diene Monomer (EPDM) and Styrene Butadiene Rubber (SBR) with Sulfur and Peroxide Vulcanization

Year 2023, Volume: 2 Issue: 2, 131 - 137, 14.11.2023

Ali Öteleş İlker Köprü Salih Hakan Yetgin

Abstract

In this study, Styrene Butadiene Rubber (SBR) and Ethylene Propylene Diene Monomer (EPDM) rubbers were produced by Sulfur and Peroxide vulcanization methods and their physical and mechanical properties were examined. EPDM and SBR were turned into dough using a 1,5-liter laboratory type mini bandury. The obtained materials was vulcanized in the press at 180 °C for 20 minutes, and test plates were obtained. Rheological and fluidity properties of EPDM and SBR rubbers were examined using pre-press rheometer (MDR) and Mooney viscosity tests. Tensile tests and permanent deformation tests were performed to determine mechanical properties and density and hardness tests were performed to determine physical properties. As a result of the study, CRI values increased by 52,2% for EPDM/P rubber and 2,8% for SBR/P rubber. While the Mooney density value of EPDM/P and EPDM/K rubbers did not change, it decreased by 16,7% of SBR/P rubber. Depending on the vulcanization type of EPDM rubber, the breaking strength and elongation at break increased, while the breaking elongation of SBR rubber decreased. While the compression set of EPDM/P rubber increased by 86,9%, the compression set of SBR/P rubber decreased by 78,1%.

Keywords

Ethylene Propylene Diene Monomer, Styrene Butadiene Rubber, sulfur, peroxide, vulcanization

Etilen Propilen Dien Monomer (EPDM) ve Stiren Bütadien (SBR) Kauçukların Kükürt ve Peroksit Vulkanizayon ile Fiziksel ve Mekanik Özelliklerinin İncelenmesi

Abstract

Bu çalışmada, Stiren Bütadien Kauçuğu (SBR) ve Etilen Propilen Dien Monomer (EPDM) kauçukların Kükürt ve Peroksit vulkanizayon yöntemleri ile üretilerek fiziksel ve mekanik özellikleri incelenmiştir. 1,5 lt’lik laboratuvar tipi mini banbury kullanılarak EPDM ve SBR hamur haline getirilmiştir. Elde edilen EPDM ve SBR hamurları preste 180 oC ve 20 dakika boyunca vulkanize edilerek test plakaları elde edilmiştir. Pres öncesi rehometri (MDR) ve Mooney viskozite testleri ile EPDM ve SBR hamurlarının reolojik ve akışkanlık özellikleri incelenmiştir. Mekanik özelliklerin belirlenmesi için çekme testi ve kalıcı deformasyon testi, fiziksel özelliklerin belirlenmesi için yoğunluk ve Shore A sertlik testleri yapılmıştır. Çalışma sonucunda, CRI değerleri EPDM/P kauçuğu için %52,2, SBR/P kauçuğu için %2,8 oranında artmıştır. EPDM/P ve EPDM/K kauçukların mooney viskozite değeri değişmezken SBR/P kauçuğunun ise %16,7 oranında artmıştır. EPDM kauçuğun vulkanizasyon türüne bağlı olarak kopma mukavemeti ve kopma uzaması artarken SBR kauçuğun azalmıştır. EPDM/P kauçuğunun kalıcı deformasyon oranı %86,9 oranında artarken SBR/P kauçuğunun kalıcı deformasyon oranı %78,1 oranında azalmıştır.

Keywords

Etilen Propilen Dien Monomer, Stiren Bütadien Kauçuğu, kükürt, peroksit, vulkanizasyon

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