Investigation of Rheological and Mechanical Properties of Rubbers Produced by Sulfur Vulcanization from EPDM Rubbers with Different Ethylene Ratios

Hakan Ulusoy; Feridun Demir

doi:10.47495/okufbed.1036101

Araştırma Makalesi

Investigation of Rheological and Mechanical Properties of Rubbers Produced by Sulfur Vulcanization from EPDM Rubbers with Different Ethylene Ratios

Yıl 2022, Cilt: 5 Sayı: Özel Sayı, 216 - 226, 23.02.2022

Hakan Ulusoy Feridun Demir

https://doi.org/10.47495/okufbed.1036101

Öz

In this study, the effect of ethylene on the rheological and mechanical properties of rubbers was investigated. For this purpose, rubbers were produced by mixing EPDM rubbers containing ethylene in different ratios and curing with sulfur. The formulations were modified so that all samples had the same hardness. Rheometer analysis results revealed that the flow consistency of the Suprene 512 F sample was higher than the other two samples. The curing time of 90% of the sample was later than the other two samples. As a result of the tensile-elongation analysis, it was observed that the Ts/MPa and Eb/% ratios of Suprene 512 F rubber with the highest ethylene content were substantially higher. The hardness analysis revealed that the increase in the amount of ethylene in the rubber was directly proportional to the increase in the tensile breaking strength. In addition, it was observed that the ethylene ratio in rubber linearly affected the hardness change after vulcanization. While making rubber blend formulations, it should be considered that the ethylene ratio in the mixture will directly affect the change in the hardness of the product formed as a result of vulcanization.

Anahtar Kelimeler

EPDM Rubber, Ethylene ratio, Mechanical analysis, Hardness change, Rheological behavior

Teşekkür

This study was carried out in the laboratories of Golday Kaucuk Company and Osmaniye Korkut Ata University. The authors would like to acknowledge these supports.

Kaynakça

Abdou-Sabet S, Fath MY. Thermoplastic elastomeric blends of olefin rubber and polyolefin resin. US Patent. 1982;4:311–628
Brydson, J.A. Rubber Chemistry, Applied Science Publishers, London, 1978.
Da Maia, J.V. Pereira, F.P. Dutra, J.C.N. Mello, S.A.C. Becerra, E.A.O. Massi, M. da Silva Sobrinho, A. S. Influence of gas and treatment time on the surface modification of EPDM rubber treated at afterglow microwave plasmas, Appl. Surf. Sci. 2013; 285: 918–926.
Gamlin, C. Markovic, M.G. Dutta, N.K. Choudhury, N.R. Kehoeb, D. Matisons, J.G. Influence of ethylene–propylene ratio on the thermal degradation behavior of EPDM elastomers, ThermochimicaActa 2001; 367-368.
Kole, S. Chaki, T.K. Bhowmich, A.K. Frifalky, D.K. Polym. Degrad. Stab. 1993; 41: 109.
Li, C. Wang, Y. Yuan, Z. Ye, L. Construction of sacrificial bonds and hybrid networks in EPDM rubber towards mechanical performance enhancement, Appl. Surf.Sci. 2019; 484: 616–627.
Pourmand, P. Linde, E. Hedenqvist, M.S. Furo, I. Dvinskikh, S.V. Gedde, U.W. Profiling of thermally aged EPDM sealsusing portable NMR, indenter measurementsand IR spectroscopy facilitating separation of different deterioration mechanisms, Polym. Test 2016; 53: 77–84.
Spanos, P. Beelen, J. and Gogelein, C. NR replacement by ultra-high molecular weight EPDM in dynamic applications, Rubber World 2014; 251(3): 21-27.
Tu, J., Shi, X., Jing, Y., Zou, H., Kadlcak, J., Yong, Z., Liu, S., Liu, G., Relationships of tensile strength with crosslink density forthe high-carbon black-filled EPDM compounds with various softeners, Polym Eng Sci. 2021; 61: 2213–2221.
Wheelan, A. Lee, K.S. Developments in Rubber Technology-2: Synthetic Rubbers, Applied Science Publishers, London, 1981.

Farklı Etilen Oranlarına Sahip EPDM Kauçuklarından Kükürt Vulkanizasyonuyla Üretilen Kauçukların Reolojik ve Mekanik Özelliklerinin İncelenmesi

Yıl 2022, Cilt: 5 Sayı: Özel Sayı, 216 - 226, 23.02.2022

Hakan Ulusoy Feridun Demir

https://doi.org/10.47495/okufbed.1036101

Öz

Bu çalışmada etilenin kauçukların reolojik ve mekanik özellikleri üzerindeki etkisini araştırılmıştır. Bunun için farklı oranlarda etilen içeren EPDM kauçukları karıştırılıp, kükürt ile kürleyerek kauçuk hamurları üretilmiştir. Formülasyonlar, tüm numunelerde aynı sertliğe sahip olacak şekilde ayarlanmıştır. Reometre analizi sonuçları, Suprene 512 F numunesinin maksimum sertleşme torkunun (M/dN.m) diğer iki numuneden daha yüksek olduğunu ortaya koymuş, ancak, kürleme süresinin %90'ı diğer iki numuneden daha geç olmuştur. Çekme-uzama analizi, en yüksek etilen içeriğine sahip Suprene 512 F kauçuğunun Ts/MPa ve Eb/% oranlarının daha yüksek olduğunu ortaya koymuştur. Sertlik analizi, kauçuktaki etilen miktarındaki artışın, çekme kopma mukavemetindeki artışla doğru orantılı olduğunu ortaya koymuştur. Ayrıca kauçuktaki etilen oranının vulkanizasyon sonrası sertlik değişimini lineer olarak etkilediği görülmüştür. Kauçuk karışım formülasyonları yapılırken karışımdaki etilen oranının vulkanizasyon sonucu oluşan ürünün sertliğinde meydana gelen değişimi doğrudan etkileyeceği göz önünde bulundurulmalıdır.

Anahtar Kelimeler

EPDM Kauçuk, Etilen oranı, Mekanik analiz, Sertlik değişimi, Reolojik davranış

Kaynakça

Abdou-Sabet S, Fath MY. Thermoplastic elastomeric blends of olefin rubber and polyolefin resin. US Patent. 1982;4:311–628
Brydson, J.A. Rubber Chemistry, Applied Science Publishers, London, 1978.
Da Maia, J.V. Pereira, F.P. Dutra, J.C.N. Mello, S.A.C. Becerra, E.A.O. Massi, M. da Silva Sobrinho, A. S. Influence of gas and treatment time on the surface modification of EPDM rubber treated at afterglow microwave plasmas, Appl. Surf. Sci. 2013; 285: 918–926.
Gamlin, C. Markovic, M.G. Dutta, N.K. Choudhury, N.R. Kehoeb, D. Matisons, J.G. Influence of ethylene–propylene ratio on the thermal degradation behavior of EPDM elastomers, ThermochimicaActa 2001; 367-368.
Kole, S. Chaki, T.K. Bhowmich, A.K. Frifalky, D.K. Polym. Degrad. Stab. 1993; 41: 109.
Li, C. Wang, Y. Yuan, Z. Ye, L. Construction of sacrificial bonds and hybrid networks in EPDM rubber towards mechanical performance enhancement, Appl. Surf.Sci. 2019; 484: 616–627.
Pourmand, P. Linde, E. Hedenqvist, M.S. Furo, I. Dvinskikh, S.V. Gedde, U.W. Profiling of thermally aged EPDM sealsusing portable NMR, indenter measurementsand IR spectroscopy facilitating separation of different deterioration mechanisms, Polym. Test 2016; 53: 77–84.
Spanos, P. Beelen, J. and Gogelein, C. NR replacement by ultra-high molecular weight EPDM in dynamic applications, Rubber World 2014; 251(3): 21-27.
Tu, J., Shi, X., Jing, Y., Zou, H., Kadlcak, J., Yong, Z., Liu, S., Liu, G., Relationships of tensile strength with crosslink density forthe high-carbon black-filled EPDM compounds with various softeners, Polym Eng Sci. 2021; 61: 2213–2221.
Wheelan, A. Lee, K.S. Developments in Rubber Technology-2: Synthetic Rubbers, Applied Science Publishers, London, 1981.

Toplam 10 adet kaynakça vardır.

Ayrıntılar

Birincil Dil	İngilizce
Konular	Kimya Mühendisliği
Bölüm	Araştırma Makaleleri (RESEARCH ARTICLES)
Yazarlar	Hakan Ulusoy Feridun Demir 0000-0001-6372-6958
Yayımlanma Tarihi	23 Şubat 2022
Gönderilme Tarihi	15 Aralık 2021
Kabul Tarihi	12 Şubat 2022
Yayımlandığı Sayı	Yıl 2022 Cilt: 5 Sayı: Özel Sayı

Kaynak Göster

APA	Ulusoy, H., & Demir, F. (2022). Investigation of Rheological and Mechanical Properties of Rubbers Produced by Sulfur Vulcanization from EPDM Rubbers with Different Ethylene Ratios. Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 5(Özel Sayı), 216-226. https://doi.org/10.47495/okufbed.1036101
AMA	Ulusoy H, Demir F. Investigation of Rheological and Mechanical Properties of Rubbers Produced by Sulfur Vulcanization from EPDM Rubbers with Different Ethylene Ratios. OKÜ Fen Bil. Ens. Dergisi ((OKU Journal of Nat. & App. Sci). Şubat 2022;5(Özel Sayı):216-226. doi:10.47495/okufbed.1036101
Chicago	Ulusoy, Hakan, ve Feridun Demir. “Investigation of Rheological and Mechanical Properties of Rubbers Produced by Sulfur Vulcanization from EPDM Rubbers With Different Ethylene Ratios”. Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi 5, sy. Özel Sayı (Şubat 2022): 216-26. https://doi.org/10.47495/okufbed.1036101.
EndNote	Ulusoy H, Demir F (01 Şubat 2022) Investigation of Rheological and Mechanical Properties of Rubbers Produced by Sulfur Vulcanization from EPDM Rubbers with Different Ethylene Ratios. Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi 5 Özel Sayı 216–226.
IEEE	H. Ulusoy ve F. Demir, “Investigation of Rheological and Mechanical Properties of Rubbers Produced by Sulfur Vulcanization from EPDM Rubbers with Different Ethylene Ratios”, OKÜ Fen Bil. Ens. Dergisi ((OKU Journal of Nat. & App. Sci), c. 5, sy. Özel Sayı, ss. 216–226, 2022, doi: 10.47495/okufbed.1036101.
ISNAD	Ulusoy, Hakan - Demir, Feridun. “Investigation of Rheological and Mechanical Properties of Rubbers Produced by Sulfur Vulcanization from EPDM Rubbers With Different Ethylene Ratios”. Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi 5/Özel Sayı (Şubat 2022), 216-226. https://doi.org/10.47495/okufbed.1036101.
JAMA	Ulusoy H, Demir F. Investigation of Rheological and Mechanical Properties of Rubbers Produced by Sulfur Vulcanization from EPDM Rubbers with Different Ethylene Ratios. OKÜ Fen Bil. Ens. Dergisi ((OKU Journal of Nat. & App. Sci). 2022;5:216–226.
MLA	Ulusoy, Hakan ve Feridun Demir. “Investigation of Rheological and Mechanical Properties of Rubbers Produced by Sulfur Vulcanization from EPDM Rubbers With Different Ethylene Ratios”. Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi, c. 5, sy. Özel Sayı, 2022, ss. 216-2, doi:10.47495/okufbed.1036101.
Vancouver	Ulusoy H, Demir F. Investigation of Rheological and Mechanical Properties of Rubbers Produced by Sulfur Vulcanization from EPDM Rubbers with Different Ethylene Ratios. OKÜ Fen Bil. Ens. Dergisi ((OKU Journal of Nat. & App. Sci). 2022;5(Özel Sayı):216-2.