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Effet du traitement Thermique (Trempe libre )sur lesproprietes thermiques et thermo-dynamique dupolypropylene(PP)

Auteurs : Merabet Safia, Rouabah Farid
Année : 2016
Domaine : Sciences des matériaux
Type : Communication
Conférence: 7th African Conference on Non Destructive Testing ACNDT 2016 & the 5th International Conference on NDT and Materials Industry and Alloys (IC-WNDT-MI)
Résumé en PDF : (résumé en pdf)
Fulltext en PDF : (.pdf)
Mots clés : Polypropylene, Quenching, Thermal history.

Résumé :

This work deals on the study of the thermalproperties of polypropylene (PP) in the presence of residualstress (CR). A laboratory scale, two valid methods forintroducing residual stresses in the polymer, which are nonuniformcooling (thermal quenching), and the non-uniformplastic deformation (cold rolling) is known. The results obtainedby the DMA analysis result presentation of two relaxations , 'for all the samples studied. DSC results show a decrease in thecrystallinity of the polymer at free quenching temperature of20°C.