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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Resultados da Pesquisa
Item Poliéster Reforçado por Fibras de Tauari (Couratari guianensis) Curtas e Contínuas e Alinhadas(Universidade Federal do Pará, 2014) GOMES, Rilmar Pereira; FUJIYAMA, Roberto TetsuoCurrently, engineering is vigorously investing in the search for natural materials to reduce the environmental impact caused by non-degradable materials. This work aims to develop polyester composites reinforced with Tauari (Couratari guianensis) fibers, both short and randomly arranged in the matrix, and continuous and aligned. The Tauari fiber is extracted from the bark of a tree found in various regions of Brazil, especially in the municipality of Itacoatiara, in Amazonas. The manufacturing process was carried out manually, using silicone molds without pressure, without a release agent, and at room temperature. The tensile test results showed that composites with 10 mm and 15 mm short Tauari fibers achieved mechanical strengths of 18.84 MPa and 19.08 MPa, respectively, while composites with continuous and aligned fibers of 250 mm reached 19.20 MPa.Item BIOCOMPÓSITO DE POLIÉSTER REFORÇADOS COM A FIBRA DA FOLHA DE LICURI (Syagros coronata)(Universidade Federal do Pará, 2014) SANTOS, Manfrine Silva; FUJIYAMA, Roberto TetsuoThe northeastern hinterland is endowed with rich flora and abundant thus making a major supplier of plants provides the development of new polymeric composites. This dissertation aimed to the evaluation of the mechanical properties of composites reinforced by polyester fibers Licuri using a whole manual process, in order to provide the making of the material with the lowest possible technological level, thus becoming a totally viable material. The fibers were randomly dispersed in the composite, and the matrix used was pre-accelerated terephthalic polyester with cobalt naphthenate and cured at room temperature with methyl ethyl ketone peroxide (MEK) in a ratio of 0.33% (v / v). The results showed that the tensile strength increased with fiber length (5mm - 13.47 MPa, 10mm - 14.5 MPa and 15mm - 16.97 MPa), demonstrating that the investigated composites are potentially viable.