Artigo
Benzoxazine resin and their nanostructured composites cure kinetic by DSC
Registro en:
Journal Of Materials Research. New York: Cambridge Univ Press, v. 28, n. 22, p. 3094-3099, 2013.
0884-2914
10.1557/jmr.2013.327
WOS:000328546900004
4378078337343660
0000-0001-8338-4879
Autor
Bandeira, Cirlene Fourquet [UNESP]
Pereira, Aline Cristina [UNESP]
Botelho, Edson Cocchieri [UNESP]
Costa, Michelle Leali [UNESP]
Resumen
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. Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Sao Paulo Univ UNESP, Mat & Technol Dept, BR-12516410 Sao Paulo, Brazil Inst Aeronaut & Space, Div Mat, BR-12228904 Sao Paulo, Brazil Sao Paulo Univ UNESP, Mat & Technol Dept, BR-12516410 Sao Paulo, Brazil CNPq: 151154/2009-0