Skip to main content
SpringerLink
Log in

Degradation of rocket insulator at high temperature

  • Published:
Journal of thermal analysis Aims and scope Submit manuscript

Abstract

The degradation of a rocket insulator compound based on ethylene propylene diene rubber (EPDM) containing asbestor, cork and iron oxide (Fe2O3) as fillers has been studied at high temperature (up to 600°) by using differential thermal analysis (DTA) and thermogravimetry (TG). The changes in physical properties on high-temperature aging are also reported. EPDM gum vulcanizates involving different types of diene, namely ethylidene norbornene (ENB), dicyclopentadiene (DCPD) and 1,4-hexadiene (HD), were used. In each case, the kinetic parameters for degradation have been evaluated. From these data, the lifetime of the rocket insulator compound has been found.

Zusammenfassung

Die Zersetzung einer Raketenisolator-Verbindung auf Äthylen-Propylen-Dien-Gummibasis (EPDM) mit Asbest, Kork und Eisenoxid (Fe2O3) als Füllstoffe wurden bei hohen Temperaturen (bis 600°) mittels Differentialthermalanalyse (DTA) und Thermogravimetrie (TG) untersucht. Die bei Hochtemperaturen eintretenden Veränderungen der physikalischen Eigenschaften sind ebenfalls angegeben. Verschiedene Typen von Dienen, nämlich Äthyliden-norbornen (ENB), Dicyclopentadien (DCPD) und 1,4-Hexadien (HD) enthaltenden EPDM-Gummivulkanisate waren Gegenstand der Untersuchung. In allen Fällen wurden die kinetischen Parameter der Zersetzung ermittelt. Aus diesen Daten wurde die Lebensdauer der Raketenisolator-Verbindung bestimmt.

Резюме

Методом ТГ и ДТА изуче но при температурах д о 600° разложение ракетно го изоляционного матер иала на основе этиленпропилендиен ового каучука (ЭПДМ), со держащего в качестве наполните лей азбест, пробковое дерево и окись железа. Приводя тся также изменения физических свойств, в ызванных высокотемп ературным старением. Были испол ьзованы различные вулканиза ты ЭПДМ резины, главны ми из которых были этилиде ннорборнен, дициклопентадиеп и 1,4-г ексадиен. Для каждого случая были вычислены кинет ические параметры реакции ра зложения. На основе по лученных результатов установ лено время жизни ракетного изоляцион ного материала.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. A. Saha Deuri and Anil K. Bhowmick, J. Appl. Polym. Sci. (in press).

  2. A. Saha Deuri and Anil K. Bhowmick, presented at the 128th Rubber Div. A.C.S. meeting, Cleveland, 1985. Polymer Degradation and Stability (in press).

  3. F. P. Baldwin, Rubber Chem. Technol., 43 (1970) 1040.

    Google Scholar 

  4. F. P. Baldwin and G. Verstrate, Rubber Chem. Technol., 45 (1972) 709.

    Google Scholar 

  5. E. A. Turi Ed., Thermal Characterization of Polymeric Materials, Academic Press, New York, 1981.

    Google Scholar 

  6. A. K. Sircar and T. G. Lamond, Rubber Chem. Technol., 45 (1972) 329.

    Google Scholar 

  7. K. C. Baranwal and G. A. Lindsay, Rubber Chem. Technol., 45 (1972) 1334.

    Google Scholar 

  8. A. K. Sircar and T. G. Lamond, Rubber Chem. Technol., 48 (1975) 631.

    Google Scholar 

  9. Martin Grayson, Encyclopedia of Glass, Ceramics and Cement, Encyclopedia Reprint Series, A., Wiley-Interscience Publication, John Wiley and Sons, 1985.

  10. E. S. Freeman and B. Carroll, J. Phys. Chem., 62 (1958) 394.

    Google Scholar 

  11. D. A. Anderson and E. S. Freeman, J. Polym. Sci., 54 (1961) 253.

    Google Scholar 

  12. L. Sluraski, J. Thermal Anal., 29 (1984) 905.

    Google Scholar 

  13. A. K. Bhowmick, S. Rampalli, K. Gallaghar and D. McIntyre, J. Appl. Polym. Sci. (in press).

Download references

Author information

Authors and Affiliations

  1. Rubber Technology Centre, Indian Institute of Technology, 721302, Kharagpur, India

    A. S. Deuri & K. Bhowmick

Authors
  1. A. S. Deuri
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. K. Bhowmick
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

The authors are grateful to the Indian Space Research Organization for funding, and acknowledge the help and suggestions from Mr. T. S. Ram and Mr. Baby John, R.P.P., V.S.S.C., Trivandrum. The authors are also grateful to Prof. S. K. De, Rubber Technology Centre, and Prof. R. Ghosh, Chemistry Department, I.I.T., Kharagpur.

The authors thank Mr. Asutosh Ghosh, Indian Association for the Cultivation of Science, for experimental assistance.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Deuri, A.S., Bhowmick, K. Degradation of rocket insulator at high temperature. Journal of Thermal Analysis 32, 755–770 (1987). https://doi.org/10.1007/BF01913761

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01913761

Keywords

Search

Navigation