Modification of the Structure and Elastic-Strength Properties of Elastomers Based on Nitrile Butadiene Rubber with the X-ray
Valko N.G. Kasperovich A.V. Skaskevich A.A. Nikonova T.Y. Zhuk K.A.
April 2025Pleiades Publishing
Journal of Surface Investigation
2025#19Issue 2540 - 544 pp.
Abstract: Results of a study of the effect of X-rays of 100 kR/h on the structure, tribological and elastic properties of elastomers based on nitrile-butadiene rubber with degrees of vulcanization of t70 and t90 are presented. It is found that irradiation of rubber with an exposure dose up to 50 kR leads to an increase in the elongation at break and tensile strength due to a decrease in the degree of crystallinity and to an increase in the crosslink density and a decrease in the specific volume of the polymers. It is obtained that the X-ray irradiation of rubber with exposure doses in the range from 50 to 100 kR leads to an increase in a degree of crystallinity and to deterioration in elastic-strength properties of rubber. It is suggested that the crosslinks of elastomers based on nitrile-butadiene rubber break after the X-ray exposure of dose in the range from 50 to 100 kR. The established nonlinear dependences of the elastic-strength properties of nitrile butadiene rubber with degrees of vulcanization t70 and t90 from an exposure dose point to greatly depending of the rubber intermolecular crosslinks density from an exposure dose of the X-ray and time after exposure. It is obtained a radiation aging of NBR elastomers have been exposure with X-ray. It is established that 2 months after irradiation the elongation at break decreases for NBR elastomers samples and the coefficient of dynamic friction decreases at first and increases after a month.
degree of vulcanization , density , elastic-strength properties , exposure dose , radiation aging , X-ray radiation
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Yanka Kupala State University of Grodno, Grodno, 230023, Belarus
Belarusian State Technological University, Minsk, 220006, Belarus
Karaganda Technical University named after Abylkas Saginov, Karaganda, 56100027, Kazakhstan
Yanka Kupala State University of Grodno
Belarusian State Technological University
Karaganda Technical University named after Abylkas Saginov
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