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Investigation of kinetics of curing of triglycidyl-p-aminophenol with aromatic diamines by differential scanning calorimetry

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Abstract

The kinetics of curing of triglycidyl-p-aminophenol with four different diamines in stoichiometric amounts were investigated by means of differential scanning calorimetry. The results indicated that the curing reaction follows first-order Arrhenius kinetics with an activation energy in the range 40–70 kJ · mol−1. The effect of the structure of the curing agent on the curing characteristics is discussed on the basis of the curing characteristics and the kinetic parameters. An epoxy fortifier was observed to lower the curing temperature of an epoxy-amine system when incorporated prior to curing.

Zusammenfassung

Mittels Differential-Scanning-Kalorimetrie wurde die Kinetik der Vernetzung von Triglycidyl-p-aminophenol mit stöchiometrischen Mengen vier verschiedener Amine untersucht. Laut den Ergebnissen verläuft die Vernetzungsreaktion mit einer Arrhenius-Kinetik erster Ordnung, wobei die Aktivierungsenergie im Bereich von 40–70 kJ/mol liegt. Auf Grundlage der Vernetzungscharakteristika und der kinetischen Parameter wird der Einfluss der Struktur des Vernetzungsreagenz auf die Vernetzungskenndaten beschrieben. Mit einem vor der Vernetzung eingebrachten Epoxyfortifyers konnte die Vernetzungstemperatur eines Epoxy-Amin-Systemes heruntergesetzt werden.

РЕжУМЕ

МЕтОДОМ Дск ИсслЕДОВ АНА кИНЕтИкА ОтВЕРжД ЕНИь тРИглИцИДИл-п-АМИНОФ ЕНОлА с ЧЕтыРьМь РАжлИЧНыМИ ДИАМИНАМИ, Вжьтых В стЕхИОМЕтРИЧЕскИх к ОлИЧЕстВАх. РЕжУльтА ты пОкАжАлИ, ЧтО РЕАкцИь ОтВЕРжДЕНИь пОДЧИНь Етсь АРРЕНИУсОВскОИ кИНЕ тИкЕ пЕРВОгО пОРьДкА с ЁНЕРгИЕИ АктИВАцИИ В ИНтЕРВАлЕ 40–70 кДж·МОль−1. НА ОсНОВЕ кИНЕтИЧЕскИх пАРАМЕтРОВ ОБсУжДЕНО ВлИьНИЕ ст РУктУРы ВУлкАНИжИРУ УЩЕгО АгЕНтА НА хАРАктЕРИстИкИ РЕ АкцИИ ОтВЕРжДЕНИь. УстАНОВлЕНО, ЧтО ЁпОк сИжАкРЕпИтЕль, ВВЕДЕ ННыИ РАНьшЕ ВУлкАНИжИРУУЩЕгО Аг ЕНтА, пОНИжАЕт тЕМпЕРАтУР У ОтВЕРжДЕНИь.

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Authors and Affiliations

  1. Chemistry Department, Sardar Patel University, 388120, Vallabh Vidyanagar, India

    Ravji D. Patel, Ranjan G. Patel & Vithal S. Patel

Authors
  1. Ravji D. Patel
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  2. Ranjan G. Patel
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  3. Vithal S. Patel
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Additional information

One of the authors (R.D.P.) is grateful to the University Grants Commission, New Delhi, for the award of a Research Associateship under the Special Assistance Programme.

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Patel, R.D., Patel, R.G. & Patel, V.S. Investigation of kinetics of curing of triglycidyl-p-aminophenol with aromatic diamines by differential scanning calorimetry. Journal of Thermal Analysis 34, 1283–1293 (1988). https://doi.org/10.1007/BF01914352

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  • DOI: https://doi.org/10.1007/BF01914352

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