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

Year 2022, Volume: 5 Issue: Özel Sayı, 216 - 226, 23.02.2022
https://doi.org/10.47495/okufbed.1036101

Abstract

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.

Thanks

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.

References

  • 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

Year 2022, Volume: 5 Issue: Özel Sayı, 216 - 226, 23.02.2022
https://doi.org/10.47495/okufbed.1036101

Abstract

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.

References

  • 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.
There are 10 citations in total.

Details

Primary Language English
Subjects Chemical Engineering
Journal Section RESEARCH ARTICLES
Authors

Hakan Ulusoy

Feridun Demir 0000-0001-6372-6958

Publication Date February 23, 2022
Submission Date December 15, 2021
Acceptance Date February 12, 2022
Published in Issue Year 2022 Volume: 5 Issue: Özel Sayı

Cite

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. Osmaniye Korkut Ata University Journal of Natural and Applied Sciences. February 2022;5(Özel Sayı):216-226. doi:10.47495/okufbed.1036101
Chicago Ulusoy, Hakan, and 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, no. Özel Sayı (February 2022): 216-26. https://doi.org/10.47495/okufbed.1036101.
EndNote Ulusoy H, Demir F (February 1, 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 and F. Demir, “Investigation of Rheological and Mechanical Properties of Rubbers Produced by Sulfur Vulcanization from EPDM Rubbers with Different Ethylene Ratios”, Osmaniye Korkut Ata University Journal of Natural and Applied Sciences, vol. 5, no. Özel Sayı, pp. 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 (February 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. Osmaniye Korkut Ata University Journal of Natural and Applied Sciences. 2022;5:216–226.
MLA Ulusoy, Hakan and 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, vol. 5, no. Özel Sayı, 2022, pp. 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. Osmaniye Korkut Ata University Journal of Natural and Applied Sciences. 2022;5(Özel Sayı):216-2.

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