Influence of Vulcanizing System on the Properties of Rubbers Based on Ethylenepropylene Rubber

Abstract:

The article investigates the effect of vulcanizing systems of different activity on the vulcanization and elastic-strength properties of rubber compounds based on ethylene-propylene rubber Keltan . Were taken vulcanizing systems: a mixture of organic peroxide, sulfur and sulfenamide accelerator (1); a mixture of organic peroxide, sulfur and dithiodimorpholine (2); a mixture of organic peroxide, sulfur and thiuram accelerator (3); sulfur and sulfenamide accelerator (4). The vulcanization characteristics (maximum and minimum torques; times of onset, optimum and reaching the maximum speed of vulcanization) were evaluated. Elastic-strength (conditional tensile strength, elongation at break, hardness) properties of rubber compounds and operational (changes in conditional tensile strength, elongation at break after aging in air) were determined. It was found that the vulcanizing system (3) containing sulfur, peroxide in an amount of 7.0 parts by weight and thiuram accelerator imparts the best elastic and strength properties to rubber compounds and leads to their resistance to high temperatures.

• Periodical: Key Engineering Materials (Volume 899)
• Pages: 239-244
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.899.239
• Online since: September 2021
• Authors: Larisa Yuryevna Zakirova*
• Keywords: Elastic-Strength Properties, Ethylene Propylene Rubber, Peroxide, Rheometric Characteristics, Rubber

References

[1] A.N. Volf, I.M. Martemyanova, Etilenpropilenovyi kauchuk. M.: (1996).

[2] O.A. Govorova, A.E. Frolov, G.A. Sorokin, Svoistva rezin na osnove etilenpropilenovyh kauchukov. – M. ZNIITEneftehim. (1986).

[3] Sho J.K. at all, Heat dissipative mechanical damping properties of EPDM rubber composites including hybrid fillers of aluminium nitride and boron nitride. Soft Matter. 16(29) (2020) 6812-6818.

DOI: 10.1039/c9sm02123j

[4] V.F. Kablov, O.M. Novopoltseva, V.G. Kochetkov, N.V. Kostenko, Influence of aluminosilicatefiller on heat and fireresistance of rubbers based on EPDM // SWorld – 18-30 March 2014 http://www.sworld.com.ua/index.php/ru/conference/the-content-of-conferences/ archives-of-individual-conferences/march-2014 Modern directions of theoretical and applied researches. 7(1) (2014) 91-92.

[5] A.N. Gadaidin, V.F. Kablov, Osobennosti mehanicheskogo povedeniya rezin na osnove CKEPT pri temperaturah nachala destrukzii. Kauchuk I Rezina. 3 (2000) 15-17.

[6] N.F. Ushmarin, L.Yu. Tsareva, K.A. Konnova, M.V. Yakimova, N.I. Koltsov, Vliyanie tehnologicheskih dobavok I perekisei na svoistva rezinovyh smesei na osnove etilenpropilenovogo kauchuka. Butlerov coomunications. 60(10) (2019) 81-87.

[7] V.F. Kablov at all, Vlijanie napolnitelja perlit na teplostojkostq rezin na osnove ehtilenpropilendienovogo kauchuka. Sovremennye problemy nauki i obrazovanija. – 3 (2013) - URL: www.science-education.ru/109-9370.

[8] L.I. Murtazina, at all, The influence of calcium carbonate on the properties of noncuring sealants based on ethylene propylene diene monomer rubber and thermoplastics. Polymer Science - Series D, 8(3) (2015) 199–202.

DOI: 10.1134/s1995421215030090

[9] S.N. Semenova, R.R. Suleimanov, A.M. Chaikun, Vlijanie vulkanizuuzhei sistemi na temperaturnyi svoistva reziny na osnove etilenpropilenovogo kauchuka. Kauchuk i rezina. 79(5) (2020) 260-264.

[10] S.I. Volfson, L. Yu. Zakirova, Yu.S. Karaseva, A.I. Nigmatullina, Еffect of the technological additives on the properties of recycled polyolefins. Key Engineering Materials, 816 (2019) 114-118.

DOI: 10.4028/www.scientific.net/kem.816.90

[11] A.R. Kurbangaleeva, A.I. Kurkin, Y.N. Khakimullin, The influence of thixotropic additives on the properties of sealants based on oligoester urethane thiol. Polymer Science - Series D, 7(3) (2014) 162–165.

DOI: 10.1134/s1995421214030101

[12] H. Wang, T. Zhuang, S.H.I. Xinyan, M.V.A.N. Duin, S. Zhao, Peroxide cross-linking of EPDM using moving die rheometer measurements. II: Effects of the process oils. Rubber Chemistry and Technology, 91(3) (2018) 561–576.

DOI: 10.5254/rct.18.82689

[13] M.V. Duin, C. Gögelein, Sulfur Vulcanisation of low-vs. High-unsaturated Rubbers (IIR & EPDM vs. NR & BR): Part I: Network Structure and Compression Set at elevated Temperatures. KGK Kautschuk Gummi Kunststoffe, 73(6) (2020) 24–30.

[14] H.G. Dikland, Influence of chemical composition and molecular structure of EPDM on peroxide crosslinking efficiency. KGK-Kautschuk und Gummi Kunststoffe, 49 (6) (1996) 413-417.