Experimental study of curing processes epoxy binder ED-20

Authors

  • Валерий Григорьевич Гилев (Valeriy G. Gilev) Perm State University
  • Людмила Андреевна Комар (Lyudmila A. Komar) Institute of Continuous Media Mechanics UB RAS
  • Ирина Викторовна Осоргина (Irina V. Osorgina) Perm State University
  • Александр Георгиевич Пелевин (Alexander G. Pelevin) Perm State University

Keywords:

epoxy resin, rheology, kinetics, temperature

Abstract

Experimental studies of rheological properties of binder composite material based on epoxy resin ED-20 and hardener TEAT were performed. Rheological measurements were carried out on a rotational rheometer Physica MCR 501. The cone-plate geometry was used in all measurements. It is shown that the temperature dependences of the viscosity of the oligomer and the hardener are satisfactorily described by the Arrhenius equation. Changes of rheological characteristics of the binder depending on temperature are investigated. It is shown that up to the temperature T≈50 0C the yield stress of the binder are negligible. The dependence of the change in the storage modulus of the binder on the polymerization time is constructed. It is shown that at the final stages of polymerization, the binder is similar to a viscoelastic body.  The transition time from the viscous to the viscoelastic state and the solidification time of the binder depending on the temperature are determined.

References

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Published

2019-12-25

How to Cite

Гилев (Valeriy G. Gilev) В. Г., Комар (Lyudmila A. Komar) Л. А., Осоргина (Irina V. Osorgina) И. В., & Пелевин (Alexander G. Pelevin) А. Г. (2019). Experimental study of curing processes epoxy binder ED-20. Bulletin of Perm University. Physics, (4). Retrieved from https://press.psu.ru/index.php/phys/article/view/2828

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