Vol. 79 No. 6 (2020)
RUBBERS (CAOUTCHOUC)

INFLUENCE OF PLASTICIZATION OF ISOPRENE RUBBER ON STRENGTH PROPERTIES OF VULCANIZATES. P.1

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  • V. Dorozhkin,
  • Ye. Mokhnatkina,
  • D. Zemskiy,
  • A. Valiev,
  • N. Bilalova
V. Dorozhkin
Nizhnekamsk Institute of chemical technology (branch) of the Federal state budgetary educational institution of higher education «Kazan national research technological University»
Ye. Mokhnatkina
Nizhnekamsk Institute of chemical technology (branch) of the Federal state budgetary educational institution of higher education «Kazan national research technological University»
D. Zemskiy
Nizhnekamsk Institute of chemical technology (branch) of the Federal state budgetary educational institution of higher education «Kazan national research technological University»
A. Valiev
Nizhnekamsk Institute of chemical technology (branch) of the Federal state budgetary educational institution of higher education «Kazan national research technological University»
N. Bilalova
Nizhnekamsk Institute of chemical technology (branch) of the Federal state budgetary educational institution of higher education «Kazan national research technological University»
DOI: https://doi.org/10.47664/0022-9466-2020-79-6-286-289

Published 2020-12-20

Keywords

  • isoprene rubber,
  • plasticization,
  • mechanical degradation,
  • oxidative degradation,
  • strength of vulcanizates

How to Cite

[1]
Dorozhkin В., Mokhnatkina Е., Zemskiy Д., Valiev А. and Bilalova Н. 2020. INFLUENCE OF PLASTICIZATION OF ISOPRENE RUBBER ON STRENGTH PROPERTIES OF VULCANIZATES. P.1. Kauchuk i Rezina. 79, 6 (Dec. 2020), 286–289. DOI:https://doi.org/10.47664/0022-9466-2020-79-6-286-289.

Copyright (c) 2020 Kauchuk i Rezina

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Abstract

The influence of plasticization conditions (P) of SKI-3 isoprene rubber on the strength properties of vulcanizates based on it was studied. A power equation is proposed that relates the conditional strength of vulcanizate fr with its values before plasticization of SKI-3 (fro) and the value of the average mass molecular weight of rubber Mw after P, depending on its temperature T and time t. The change in the plasticization rate constant in terms of the strength of (Kst) this equation is shown, associated with a change in the nature of processes occurring at P. The values of fr are maximal (fr = 23,0 MPa) at T = 30 °C and t = 600 s, corresponding to the maximum manifestation of mechanical destruction processes, and minimal (fr = 14,3 MPa) at T = 130 °C and t = 160 s, corresponding to the maximum manifestation of oxidative destruction processes; at t = 0, the value has average values (fr = 18,0 MPa). The possibilities of determining the Kst value depending on T and t are shown. The results of the calculations satisfactorily coincide with the experimental data, which makes it possible to correctly approach the choice of temperature and time conditions.

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