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Thermal endurance evaluation of poly(butylene terephthalate) by conventional and analytical methods

Published online by Cambridge University Press:  31 January 2011

S. Giannoni ,
G. C. Montanari ,
A. Motori  and
A. Saccani
S. Giannoni
Affiliation:
Underwriters Laboratories, Melville, New York 11747–3081
G. C. Montanari
Affiliation:
Dipartimento di Ingegneria Elettrica, University of Bologna, 40136 Bologna, Italy
A. Motori
Affiliation:
Dipartimento Chimica Applicata e Scienza dei Materiali, University of Bologna, 40136 Bologna, Italy
A. Saccani
Affiliation:
Dipartimento Chimica Applicata e Scienza dei Materiali, University of Bologna, 40136 Bologna, Italy
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Abstract

The thermal endurance of poly(butylene terephthalate) was evaluated by both consolidated long-term conventional life tests and a short-term analytical procedure. The latter is based on oxidative stability measurements by isothermal differential calorimetry in a pure oxygen flow. The capability of the analytical technique to provide an activation energy for the thermo-oxidation process was verified. The results obtained by the two methods were compared and discussed. It is shown that the temperature index derived by the analytical procedure can be close to that obtained by the conventional tests, provided that a suitable selection of the test temperatures and failure criteria is made; however, benefits in term of test time shortening are lower than those previously obtained for polyolefin-based materials.

Type
Articles
Information
Journal of Materials Research , Volume 18 , Issue 6 , June 2003 , pp. 1342 - 1346
Copyright
Copyright © Materials Research Society 2003

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References

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