Investigation of the Deformation and Strength Properties of Elastomeric Compositions with Urea-Based Additives

Nelly N. Shishkina; Larisa Yuryevna Zakirova

doi:10.4028/www.scientific.net/KEM.899.281

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 899Investigation of the Deformation and Strength...

Investigation of the Deformation and Strength Properties of Elastomeric Compositions with Urea-Based Additives

Abstract:

The effect of blocked diisocyanates on the elastic-strength properties of elastomeric compositions based on SKI-3 isoprene rubber has been investigated. The synthesized additives are 2-isocyanato-4-phenylcarbamidotoluene (IPCT) and 2,4-diphenylcarbamidotoluene (DPCT). Tests were carried out to determine the physical and mechanical (conditional tensile strength, elongation at break, hardness) properties depending on the type and dosage of additives. It was found that samples with synthesized additives have strength and elongation at break higher than those of a sample without additives by 30 % and 200 %, respectively. There was also an increase in the tear resistance of all samples compared to the control (from 49.9 to 81.9 kN/m). An assumption is made about the formation of a network of physical connections, which provides an increase in these indicators. TMA analysis results showed a wider temperature range for reversible deformations (up to 180 °С).

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Periodical:

Key Engineering Materials (Volume 899)

Pages:

281-286

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.899.281

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Online since:

September 2021

Authors:

Nelly N. Shishkina*, Larisa Yuryevna Zakirova

Keywords:

2,4-Diphenylcarbamidotoluene (DPCT), 2-Isocyanato-4-Phenylcarbamidotoluene (IPCT), Adhesion to Steel Cord, Elastic-Strength Properties, Method of Dynamic Mechanical Analysis

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