Effects of carbon nanotube fillers dispersion on mechanical behavior of phenolic/carbon nanotube nanocomposite

Autor(es)

Botelho, Edson Cocchieri ^{[1, 2]} ; Costa, Michelle Leali ^{[1, 3]} ; Edwards, Elilton Rodrigues ^[1] ; Burkhart, Thomas ^[4] ; Lauke, Bernd ^[2]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, Mat & Technol Dept, UNESP, BR-12516410 Sao Paulo - Brazil

^[2] Leibniz Inst Polymer Res Dresden, Dept Mech, D-01069 Dresden - Germany

^[3] DCTA, Div Mat, Dept Sci & Aerosp Technol, Sao Paulo - Brazil

^[4] Univ Kaiserslautern, Inst Verbundwerkstoffe GmbH, Dept Mat Sci, D-67663 Kaiserslautern - Germany

• Tipo de documento: Artigo Científico
• Fonte: Journal of Materials Research; v. 27, n. 18, p. 2342-2351, SEP 2012.
• Citações Web of Science: 3

Resumo

Systematic studies have been carried out for investigating the mechanical properties of carbon nanotube (CNT)-reinforced phenolic resin. In this work, phenolic resin/CNT nanocomposite were processed using two different techniques: (i) three-roll calender device (TRC) and (ii) aqueous solution processes. In both techniques, up to 2 wt% CNT was used. In this study, it was observed that the values of tensile strength, Young's modulus, shear stress, impact resistance and also that of the tribological properties increased directly proportional to carbon nanotube volume content. Halpin-Tsai, Voigt-Reuss and Cox equations were adopted to fit the experimental data of the tensile strength and Young's modulus of the multiwalled carbon nanotube/phenolic resin composite. Morphological analysis was done utilizing scanning electron microscopy (SEM) and good dispersion of nanotubes within the phenolic resin matrix was revealed. Also according to the results presented in this work, SEM showed that TRC processing gave better dispersion than aqueous solution mixing. The observation that the values for mechanical properties increased more for TRC than aqueous mixed samples is consistent with this. (AU)

• Processo FAPESP: 09/06335-9 - Processamento e caracterização de compósitos poliméricos com nanotubos de carbono com aplicações aeroespaciais
• Beneficiário: Edson Cocchieri Botelho
• Modalidade de apoio: Bolsas no Exterior - Novas Fronteiras