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Benzoxazine resin and their nanostructured composites cure kinetic by DSC

Published online by Cambridge University Press:  11 November 2013

Cirlene Fourquet Bandeira*
Affiliation:
Materials and Technology Department, São Paulo University (UNESP), Guaratinguetá, São Paulo, Brazil 12516-410
Aline Cristina Pereira
Affiliation:
Materials and Technology Department, São Paulo University (UNESP), Guaratinguetá, São Paulo, Brazil 12516-410
Edson Cocchieri Botelho
Affiliation:
Materials and Technology Department, São Paulo University (UNESP), Guaratinguetá, São Paulo, Brazil 12516-410
Michelle Leali Costa
Affiliation:
Materials and Technology Department, São Paulo University (UNESP), Guaratinguetá, São Paulo, Brazil 12516-410; and Materials Division, Institute of Aeronautics and Space, São José dos Campos, São Paulo, Brazil 12228-904
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Benzoxazine resins are a new class of thermosetting phenolic resins that have emerged in recent decades, overcoming the traditional properties of epoxy and phenolic resins applied in the aerospace industry. The incorporation of low mass concentration of carbon nanotube (CNT) in polymer matrices can produce structural materials with superior properties. Thus, this work aims to prepare nanostructured composite benzoxazine resin/CNT and to evaluate the cure kinetic study by differential scanning calorimetry of neat benzoxazine resin and their nanostructured composites produced. Calculations of the activation energy, the reaction order, and kinetic constants are performed by a nonisothermal procedure. In general, it was observed that CNTs act as catalysts for curing the benzoxazine matrix without affecting the initial and final cure temperatures.

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Articles
Copyright
Copyright © Materials Research Society 2013 

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