The use of thermal analysis to predict the thermal life of organic electrical insulating materials |
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Authors: | L. Křižanovský V. Mentlík |
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Affiliation: | (1) Institute of Electrical Machines, Technical University, Plze , Czechoslovakia |
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Abstract: | Three different thermoanalytical methods are introduced as significant time-saving techniques in conventional life tests of some organic electrical insulating materials. DTA in cyclically alternated atmospheres of nitrogen and oxygen according to Randino and Andreotti, and TG analysis methods at different heating rates according to Flynn and Wall and to Broido were applied to two electrical insulations based on aromatic poly-imide and epoxy resin. The activation energies obtained are compared with those derived from the slopes of the life-lines produced via conventional life tests. The assumptions necessary for applying the thermal analyses in these cases are discussed.
Zusammenfassung Drei verschiedene thermoanalytische Methoden werden als wesentlich zeitsparende Techniken bei der üblichen Prüfung der Lebensdauer einiger organischer elektrischer Isoliermaterialien beschrieben. DTA in zyklisch wechselnden Atmosphären von Stickstoff und Sauerstoff nach Randino und Andreotti und Methoden der TG-Analyse bei verschiedenen Aufheizgeschwindigkeiten nach Flynn und Wall und Broido wurden bei zwei elektrischen Isolierstoffen auf aromatischer Polyimid und Epoxyd-Harz Basis eingesetzt. Die erhaltenen Aktivierungsenergien werden mit den aus der Neigung der an Hand konventioneller Lebensdauertests erhaltenen Lebenslinien verglichen. Die nötigen Voraussetzungen zur Anwendung der Thermoanalyse in diesen Fällen werden erörtert.
Résumé On présente trois méthodes thermoanalytiques différentes qui permettent de réaliser un gain de temps important lors de l'examen conventionnel de la durée de vie de quelques isolants électriques organiques. L'analyse termique différentielle en atmosphères cycliquement alternées d'azote et d'oxygène, suivant Randino et Andreotti, et la thermogravimétrie avec différentes vitesses de chauffage, suivant Flynn et Wall et Broido, ont été appliquées à deux isolants électriques à base de polyimide aromatique et de résine époxy. Les énergies d'activation obtenues sont comparées à celles déduites de la pente des lignes de vie, obtenues par des examens conventionnels de durée de vie. Les approximations nécessaires pour appliquer l'analyse thermique à ces différents cas sont discutées.
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![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) ![Bcy](/content/qg6138nn77438xl3/xxlarge1041.gif) ![acy](/content/qg6138nn77438xl3/xxlarge1072.gif) ![lcy](/content/qg6138nn77438xl3/xxlarge1083.gif) ![lcy](/content/qg6138nn77438xl3/xxlarge1083.gif) , ![tcy](/content/qg6138nn77438xl3/xxlarge1090.gif) ![acy](/content/qg6138nn77438xl3/xxlarge1072.gif) ![kcy](/content/qg6138nn77438xl3/xxlarge1082.gif) ![zhcy](/content/qg6138nn77438xl3/xxlarge1078.gif) ![Bcy](/content/qg6138nn77438xl3/xxlarge1041.gif) ![rcy](/content/qg6138nn77438xl3/xxlarge1088.gif) ![ocy](/content/qg6138nn77438xl3/xxlarge1086.gif) ![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) ![dcy](/content/qg6138nn77438xl3/xxlarge1076.gif) . ![Pcy](/content/qg6138nn77438xl3/xxlarge1055.gif) ![ocy](/content/qg6138nn77438xl3/xxlarge1086.gif) ![lcy](/content/qg6138nn77438xl3/xxlarge1083.gif) ![ucy](/content/qg6138nn77438xl3/xxlarge1091.gif) ![chcy](/content/qg6138nn77438xl3/xxlarge1095.gif) ![iecy](/content/qg6138nn77438xl3/xxlarge1077.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) ![ycy](/content/qg6138nn77438xl3/xxlarge1099.gif) ![ecy](/content/qg6138nn77438xl3/xxlarge1101.gif) ![iecy](/content/qg6138nn77438xl3/xxlarge1077.gif) ![rcy](/content/qg6138nn77438xl3/xxlarge1088.gif) ![gcy](/content/qg6138nn77438xl3/xxlarge1075.gif) ![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) ![acy](/content/qg6138nn77438xl3/xxlarge1072.gif) ![kcy](/content/qg6138nn77438xl3/xxlarge1082.gif) ![tcy](/content/qg6138nn77438xl3/xxlarge1090.gif) ![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) ![vcy](/content/qg6138nn77438xl3/xxlarge1074.gif) ![acy](/content/qg6138nn77438xl3/xxlarge1072.gif) ![tscy](/content/qg6138nn77438xl3/xxlarge1094.gif) ![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) 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![ocy](/content/qg6138nn77438xl3/xxlarge1086.gif) ![lcy](/content/qg6138nn77438xl3/xxlarge1083.gif) ![ucy](/content/qg6138nn77438xl3/xxlarge1091.gif) ![chcy](/content/qg6138nn77438xl3/xxlarge1095.gif) ![iecy](/content/qg6138nn77438xl3/xxlarge1077.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) ![ocy](/content/qg6138nn77438xl3/xxlarge1086.gif) ![bcy](/content/qg6138nn77438xl3/xxlarge1073.gif) ![ycy](/content/qg6138nn77438xl3/xxlarge1099.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) ![ycy](/content/qg6138nn77438xl3/xxlarge1099.gif) ![mcy](/content/qg6138nn77438xl3/xxlarge1084.gif) ![tcy](/content/qg6138nn77438xl3/xxlarge1090.gif) ![iecy](/content/qg6138nn77438xl3/xxlarge1077.gif) ![scy](/content/qg6138nn77438xl3/xxlarge1089.gif) ![tcy](/content/qg6138nn77438xl3/xxlarge1090.gif) ![acy](/content/qg6138nn77438xl3/xxlarge1072.gif) ![mcy](/content/qg6138nn77438xl3/xxlarge1084.gif) ![pcy](/content/qg6138nn77438xl3/xxlarge1087.gif) ![rcy](/content/qg6138nn77438xl3/xxlarge1088.gif) ![ocy](/content/qg6138nn77438xl3/xxlarge1086.gif) ![dcy](/content/qg6138nn77438xl3/xxlarge1076.gif) ![ocy](/content/qg6138nn77438xl3/xxlarge1086.gif) ![lcy](/content/qg6138nn77438xl3/xxlarge1083.gif) ![zhcy](/content/qg6138nn77438xl3/xxlarge1078.gif) ![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) ![tcy](/content/qg6138nn77438xl3/xxlarge1090.gif) ![iecy](/content/qg6138nn77438xl3/xxlarge1077.gif) ![softcy](/content/qg6138nn77438xl3/xxlarge1100.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) ![ocy](/content/qg6138nn77438xl3/xxlarge1086.gif) ![scy](/content/qg6138nn77438xl3/xxlarge1089.gif) ![tcy](/content/qg6138nn77438xl3/xxlarge1090.gif) ![zhcy](/content/qg6138nn77438xl3/xxlarge1078.gif) ![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) ![zcy](/content/qg6138nn77438xl3/xxlarge1079.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) ![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) ![acy](/content/qg6138nn77438xl3/xxlarge1072.gif) ![kcy](/content/qg6138nn77438xl3/xxlarge1082.gif) ![lcy](/content/qg6138nn77438xl3/xxlarge1083.gif) ![ocy](/content/qg6138nn77438xl3/xxlarge1086.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) ![ocy](/content/qg6138nn77438xl3/xxlarge1086.gif) ![lcy](/content/qg6138nn77438xl3/xxlarge1083.gif) ![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) ![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) ![pcy](/content/qg6138nn77438xl3/xxlarge1087.gif) ![rcy](/content/qg6138nn77438xl3/xxlarge1088.gif) ![ocy](/content/qg6138nn77438xl3/xxlarge1086.gif) ![dcy](/content/qg6138nn77438xl3/xxlarge1076.gif) ![ocy](/content/qg6138nn77438xl3/xxlarge1086.gif) ![lcy](/content/qg6138nn77438xl3/xxlarge1083.gif) ![zhcy](/content/qg6138nn77438xl3/xxlarge1078.gif) ![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) ![tcy](/content/qg6138nn77438xl3/xxlarge1090.gif) ![iecy](/content/qg6138nn77438xl3/xxlarge1077.gif) ![lcy](/content/qg6138nn77438xl3/xxlarge1083.gif) ![softcy](/content/qg6138nn77438xl3/xxlarge1100.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) ![ocy](/content/qg6138nn77438xl3/xxlarge1086.gif) ![scy](/content/qg6138nn77438xl3/xxlarge1089.gif) ![zhcy](/content/qg6138nn77438xl3/xxlarge1078.gif) ![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) ![zcy](/content/qg6138nn77438xl3/xxlarge1079.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) . ![Ocy](/content/qg6138nn77438xl3/xxlarge1054.gif) ![bcy](/content/qg6138nn77438xl3/xxlarge1073.gif) ![scy](/content/qg6138nn77438xl3/xxlarge1089.gif) ![ucy](/content/qg6138nn77438xl3/xxlarge1091.gif) ![zhcy](/content/qg6138nn77438xl3/xxlarge1078.gif) ![dcy](/content/qg6138nn77438xl3/xxlarge1076.gif) ![iecy](/content/qg6138nn77438xl3/xxlarge1077.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) ![iecy](/content/qg6138nn77438xl3/xxlarge1077.gif) ![ocy](/content/qg6138nn77438xl3/xxlarge1086.gif) ![bcy](/content/qg6138nn77438xl3/xxlarge1073.gif) ![khcy](/content/qg6138nn77438xl3/xxlarge1093.gif) ![ocy](/content/qg6138nn77438xl3/xxlarge1086.gif) ![dcy](/content/qg6138nn77438xl3/xxlarge1076.gif) ![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) ![ycy](/content/qg6138nn77438xl3/xxlarge1099.gif) ![dcy](/content/qg6138nn77438xl3/xxlarge1076.gif) ![ocy](/content/qg6138nn77438xl3/xxlarge1086.gif) ![pcy](/content/qg6138nn77438xl3/xxlarge1087.gif) ![ucy](/content/qg6138nn77438xl3/xxlarge1091.gif) ![shchcy](/content/qg6138nn77438xl3/xxlarge1097.gif) ![iecy](/content/qg6138nn77438xl3/xxlarge1077.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) ![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) ![dcy](/content/qg6138nn77438xl3/xxlarge1076.gif) ![lcy](/content/qg6138nn77438xl3/xxlarge1083.gif) ![pcy](/content/qg6138nn77438xl3/xxlarge1087.gif) ![rcy](/content/qg6138nn77438xl3/xxlarge1088.gif) ![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) ![mcy](/content/qg6138nn77438xl3/xxlarge1084.gif) ![iecy](/content/qg6138nn77438xl3/xxlarge1077.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) ![iecy](/content/qg6138nn77438xl3/xxlarge1077.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) ![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) ![tcy](/content/qg6138nn77438xl3/xxlarge1090.gif) ![iecy](/content/qg6138nn77438xl3/xxlarge1077.gif) ![rcy](/content/qg6138nn77438xl3/xxlarge1088.gif) ![mcy](/content/qg6138nn77438xl3/xxlarge1084.gif) ![chcy](/content/qg6138nn77438xl3/xxlarge1095.gif) ![iecy](/content/qg6138nn77438xl3/xxlarge1077.gif) ![scy](/content/qg6138nn77438xl3/xxlarge1089.gif) ![kcy](/content/qg6138nn77438xl3/xxlarge1082.gif) ![ocy](/content/qg6138nn77438xl3/xxlarge1086.gif) ![gcy](/content/qg6138nn77438xl3/xxlarge1075.gif) ![acy](/content/qg6138nn77438xl3/xxlarge1072.gif) ![ncy](/content/qg6138nn77438xl3/xxlarge1085.gif) ![acy](/content/qg6138nn77438xl3/xxlarge1072.gif) ![lcy](/content/qg6138nn77438xl3/xxlarge1083.gif) ![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) ![zcy](/content/qg6138nn77438xl3/xxlarge1079.gif) ![tcy](/content/qg6138nn77438xl3/xxlarge1090.gif) ![acy](/content/qg6138nn77438xl3/xxlarge1072.gif) ![icy](/content/qg6138nn77438xl3/xxlarge1080.gif) ![scy](/content/qg6138nn77438xl3/xxlarge1089.gif) ![lcy](/content/qg6138nn77438xl3/xxlarge1083.gif) ![ucy](/content/qg6138nn77438xl3/xxlarge1091.gif) ![chcy](/content/qg6138nn77438xl3/xxlarge1095.gif) ![acy](/content/qg6138nn77438xl3/xxlarge1072.gif) ![yacy](/content/qg6138nn77438xl3/xxlarge1103.gif) .
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本文献已被 SpringerLink 等数据库收录! |
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