Effect of Ground Vulcanizate Modification Methods on Properties of Oil-Petroleum-Resistant Rubber

Abstract:

In this paper, the influence of the modification method applied to ground vulcanizate (GV) on the properties of elastomeric compositions based on nitrile rubber is discussed. Modified GV has been mixed with the elastomeric composition, which is used for the manufacturing of oil-petroleum-resistant rubber products.The work takes into consideration two types of GV with different chemical nature. The first GV type is rubber crumb produced from end-of-life tires. The second GV type was obtained from rubber wastes based on nitrile rubber. Three methods of the modification are compared in the research: mechanical activation in a planetary ball mill, swelling in a Polyethylene glycol (PEG-400) medium, and the mechano-chemical transformation of GV with PEG-4000. It is shown that depending on the dosage addition of GV modified with PEG-4000 reduce the compression set up for (16.1±0.7%), the strength decreases only by 2.1–8.3%, and the elongation at break increases by 0.8–10.3% compared to rubber without additives.

• Periodical: Key Engineering Materials (Volume 903)
• Pages: 127-133
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.903.127
• Online since: November 2021
• Authors: Vadim Myadelets, Vjaceslavs Lapkovskis*, Andrey V. Kasperovich
• Keywords: Additives, Ground Vulcanizate, Modification, Oil-Petroleum-Resistant Rubber, PEG-4000

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