Documentação de convênios

URI permanente desta comunidadehttps://rigalileo.itegam.org.br/handle/123456789/173

Trabalhos ténico-científico oriundos de convênios com universidades para oferta de turmas de mestrado e doutorados no Estado do Amazonas

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2014 - 20152

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Autor: search.filters.author.LOPES, Raimundo Valdan PereiraAssunto: search.filters.subject.Ensaio de tração

Resultados da Pesquisa

Agora exibindo 1 - 2 de 2
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    Biocomposite from polyester reinforced with licuri leaves fiber (Syagrus coronata)
    (INSTITUTO DE TECNOLOGIA, 2015) SANTOS, Manfrine Silva; LOPES, Raimundo Valdan Pereira; LEITE, Jandecy Cabral; AFONSO, Marcus Roberto Binda; HERMENEGILDO, Eleodoro Rodriguez; MAGALHÃES, Edilson Marques
    The aim of this paper is the evaluation of the mechanical properties of polyester composites reinforced with Licuri fibers by tensile testing using a manual process with minimal technological steps to obtain a technically viable material. Fibers were characterized by mass fraction and surface morphology via scanning electron microscopy. Results showed that tensile strength increased with fiber length, indicating potential viability despite the relatively low mass fractions compared to other studies.
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    Estudo das Propriedades Mecânicas de Biocompósito de Poliéster Reforçado por Fibra de Munguba (Pseudobombax munguba)
    (Universidade Federal do Pará, 2014) LOPES, Raimundo Valdan Pereira; FUJIYAMA, Roberto Tetsuo
    The diversity of Amazonian flora makes the region conducive to the development of new polymer composites. This study evaluated the mechanical properties of polyester composites reinforced with short munguba fibers, randomly arranged, using the lowest possible level of technological processing. The polyester matrix used was pre-accelerated terephthalic with cobalt naphthenate, cured at room temperature with methyl-ethyl-ketone peroxide (MEK). Munguba fibers were manually extracted from native adult trees in the Curarí floodplain region, Amazonas. The composites were characterized through tensile tests and microstructural analysis. The results showed that tensile strength increased with fiber length (5mm - 9.61 MPa; 10mm - 12.16 MPa; 15mm - 19.91 MPa), with better alignment and uniformity of the fibers in the matrix.