Vol. 80 No. 2 (2021)
RUBBERS (CAOUTCHOUC)

EFFECT OF PLASTICIZATION OF ISOPRENE RUBBER ON THE FATIGUE ENDURANCE OF ITS VULCANIZATES

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  • V. Dorozhkin,
  • Ye. Mokhnatkina,
  • D. Zemskiy,
  • A. Valiev,
  • M. Kazakova
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»
M. Kazakova
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/10.47664/0022-9466-2021-80-2-54-58

Published 2021-04-20

Keywords

  • plasticization,
  • isoprene rubber,
  • fatigue resistance of vulcanizates

How to Cite

[1]
Dorozhkin В., Mokhnatkina Е., Zemskiy Д., Valiev А. and Kazakova М. 2021. EFFECT OF PLASTICIZATION OF ISOPRENE RUBBER ON THE FATIGUE ENDURANCE OF ITS VULCANIZATES. Kauchuk i Rezina. 80, 2 (Apr. 2021), 54–58. DOI:https://doi.org/10.47664/0022-9466-2021-80-2-54-58.

Copyright (c) 2021 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 isoprene rubber SKI-3 on fatigue resistance (FR) during repeated stretching of its vulcanizates was studied. An equation is proposed that allows to calculate the number of cycles before the vulcanizate breaks down (Np) depending on the temperature T and time t of its P, the average mass molecular weight after P, as well as the rate constant of Np change. The calculated values of Np are close to the experimental ones. The contribution of different fractions of different molecular weights (MM) to the value of Np is estimated. Np is maximal at high t and at extreme values of T (30 and 130 °С ) and minimal in the middle of this interval (80 °С), when the rate of mechanodestruction approximately corresponds to the rate of thermooxidative destruction. It is shown that Np is maximal at a higher content of two fractions of : maximal (5∙105 –1∙106) and minimal (<1∙105) MM; the decrease in the MM of the first ones results in the improvment of the FR.

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References

  1. Дорожкин В.П., Мохнаткина Е.Г., Земский Д.Н. и др. Влияние пластикации изопренового каучука на пластичность его резиновой смеси // Каучук и резина. 2020. Т.79. №4. С.186.
  2. Дорожкин В.П., Мохнаткина Е.Г., Земский Д.Н. и др. Влияние пластикации изопренового каучука на вязкость по Муни его резиновой смеси // Каучук и резина. 2020. Т.79. №5. С.244.
  3. Дорожкин В.П., Мохнаткина Е.Г., Земский Д.Н. и др. Влияние пластикации изопренового каучука на прочность его вулканизатов. Часть 1. // Каучук и резина. 2020. Т.79. № 6. С.286.
  4. Дорожкин В.П., Мохнаткина Е.Г., Земский Д.Н. и др. Влияние пластикации изопренового каучука на прочность его вулканизатов. Часть 2. // Каучук и резина. 2021. Т.80. № 1. С….
  5. Резниковский М.М. Исследование динамических свойств резин. Дисс. … д.т.н. М.:МИТХТ,1958. - 412 с.
  6. Дорожкин В.П., Мохнаткин А.М., Салаев М.В. и др. К вопросу о динамической выносливости сшитых эластомеров // Каучук и резина. 2016. №.4. С.38.
  7. Дорожкин В.П., Мохнаткина Е.Г., Земский Д.Н. и др. Влияние пластикации изопренового каучука на его молекулярные характеристики. Часть1. // Каучук и резина. 2020. Т.79. №.2. С.62.