Etiliden Norboren (ENB) Oranın Etilen-Propilen-Dien-Monomer (EPDM) Kauçuğun Mekanik, Reolojik ve Fiziksel Özelliklerine Etkisinin İncelenmesi
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Tarih
2023
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Çankırı Karatekin Üniversitesi
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bu çalışmada, EPDM kauçuğundaki ENB oranının mekanik, reolojik ve fiziksel özelliklere etkisi incelenmiştir. Etilen oranı %44 olan %5.5 ve %9 ENB oranına sahip EPDM kauçukları ile etilen oranı %57 olan %4.5 ve %8.9 ENB oranına sahip EPDM kauçukları üretilerek ENB oranın etkileri araştırılmıştır. Üretimler 1.5 lt’lik laboratuvar tipi mini banbury kullanılarak gerçekleştirilmiştir. Elde edilen EPDM karışımları preste 180 oC ve 20 dakika boyunca vulkanize edilerek test plakaları elde edilmiştir. Pres öncesi reometre (MDR) ve Mooney viskozite testleri ile EPDM karışımlarının reolojik ve akışkanlık özellikleri incelenmiştir. Kopma mukavemeti ve kopma uzaması gibi mekanik özelliklerin belirlenmesi için çekme testi ve ayrıca kalıcı deformasyon testi, fiziksel özelliklerin belirlenmesi için yoğunluk ve sertlik testleri yapılmıştır. Çalışma sonucunda, ENB miktarının artması ile ML ve MH, mooney viskozite ve CRI değerlerinin arttığı gözlenmiştir. Etilen oranı %44 olan numunelerde kopma mukavemeti %8.9 oranında azalırken Etilen oranı %57 olan numunelerde kopma mukavemeti %29.5 oranında artmıştır. ENB oranının artması ile kalıcı deformasyon oranı %15.2 ve %26.2 oranlarında azalmıştır.
In this study, the effect of ENB ratio in EPDM rubber on mechanical, rheological and physical properties was examined. The effects of ENB ratio were investigated by producing EPDM rubbers with 44% ethylene ratio and 5.5% and 9% ENB ratio, and EPDM rubbers with 57% ethylene ratio and 4.5% and 8.9% ENB ratio. Production was carried out using a 1.5 liter laboratory type mini banbury. The resulting EPDM mixtures were vulcanized in the press at 180 oC for 20 minutes and test plates were obtained. Rheological and fluidity properties of EPDM mixtures were examined using pre-press rheometer (MDR) and Mooney viscosity tests. Tensile tests and permanent deformation tests were performed to determine mechanical properties such as breaking strength and elongation at break, and density and hardness tests were performed to determine physical properties. As a result of the study, it was observed that ML and MH, Mooney viscosity and CRI values increased with the increase in the amount of ENB. While the tensile strength decreased by 8.9% in samples with 44% ethylene content, the tensile strength increased by 29.5% in samples with 57% ethylene content. With the increase of ENB ratio, the permanent deformation rate decreased by 15.2% and 26.2%.
In this study, the effect of ENB ratio in EPDM rubber on mechanical, rheological and physical properties was examined. The effects of ENB ratio were investigated by producing EPDM rubbers with 44% ethylene ratio and 5.5% and 9% ENB ratio, and EPDM rubbers with 57% ethylene ratio and 4.5% and 8.9% ENB ratio. Production was carried out using a 1.5 liter laboratory type mini banbury. The resulting EPDM mixtures were vulcanized in the press at 180 oC for 20 minutes and test plates were obtained. Rheological and fluidity properties of EPDM mixtures were examined using pre-press rheometer (MDR) and Mooney viscosity tests. Tensile tests and permanent deformation tests were performed to determine mechanical properties such as breaking strength and elongation at break, and density and hardness tests were performed to determine physical properties. As a result of the study, it was observed that ML and MH, Mooney viscosity and CRI values increased with the increase in the amount of ENB. While the tensile strength decreased by 8.9% in samples with 44% ethylene content, the tensile strength increased by 29.5% in samples with 57% ethylene content. With the increase of ENB ratio, the permanent deformation rate decreased by 15.2% and 26.2%.
Açıklama
Anahtar Kelimeler
EPDM, ENB oranı, Reolojik özellikler, Fiziksel özellikler, EPDM, ENB Ratio, rheological properties, Physical properties
Kaynak
Alfa Mühendislik ve Uygulamalı Bilimler Dergisi
WoS Q Değeri
Scopus Q Değeri
Cilt
1
Sayı
1
