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Doctoral Thesis
DOI
https://doi.org/10.11606/T.85.2013.tde-10022015-143012
Document
Author
Full name
Guilherme Wolf Lebrão
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2013
Supervisor
Committee
Rossi, Jesualdo Luiz (President)
Bartoli, Julio Roberto
Fejfar, José Luiz
Marinucci, Gerson
Piva, Ana Magda
Title in Portuguese
Processamento e caracterização de material compósito polimérico obtido com nanotubo de carbono funcionalizado
Keywords in Portuguese
compósito
funcionalizado
nanotubo de carbono
Abstract in Portuguese
Desenvolveu-se neste trabalho um procedimento para incorporação de nanotubos de carbono (NTC) em uma resina fenol / epóxi a ser utilizado como matriz de um compósito de fibra de carbono. Realizando para tal, a oxidação dos NTC com o uso de micro-ondas e sua funcionalização com 3-amino-propil-tri-etoxi-silano, usado com agente de acoplamento entre a resina e o NTC. Após o processamento, como resultado da adição dos NTC na resina, obteve-se um aumento na sua temperatura de transição vítrea e uma melhora no limite de resistência à flexão e impacto. No material compósito fibra de carbono, obtido por laminação manual, onde a resina fenol / epóxi mais NTC foi usada como matriz, obteve-se o aumento do limite de resistência à tração e ao impacto, confirmado por uma análise de variância com 95% de confiança, mostrando a eficácia no tratamento dos NTC.
Title in English
Processing and characterization of polymeric composite material obtained with functionalized carbon nanotube
Keywords in English
carbono nanotubes
composite
functionalized
Abstract in English
This work has developed a procedure for incorporating carbon nanotubes (CNT) on a phenol / epoxy matrix to be used as a carbon fiber composite. Performing for such oxidation of the NTC with the use of microwaves and their functionalization with 3- aminopropyl-triethoxysilane, a coupling agent used between the resin and CNT. After processing, as a result of the addition of CNT, the resin obtained an increase in the glass transition temperature and an improvement in flexural strength and impact resistence. In the carbon fiber composite, hand lay-up prepared, where the phenol / epoxy and CNT was used as a matrix, we obtained the increase in the limit of tensile strength and impact resistance, confirmed by an analysis of variance with 95% confidence, showing efficacy in the treatment of CNT.
 
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Publishing Date
2015-03-04
 
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