Nilton Cesar Almeida Queiroz

Instituto Federal de Educação, Ciência e Tecnologia do Pará

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Vera Lúcia Dias da Silva

Instituto Federal de Educação, Ciência e Tecnologia do Pará

Syme Regina Souza Queiroz

Instituto Federal de Educação, Ciência e Tecnologia do Pará

Liz Souza Queiroz

Elison Souza Queiroz

Vanessa Maria Yae do Rosario Taketa

Instituto Federal de Educação, Ciência e Tecnologia do Pará

Giâcomo dos Santos Freire

Instituto Federal de Educação, Ciência e Tecnologia do Pará

Felipe Augusto dos Santos Alves

Instituto Federal de Educação, Ciência e Tecnologia do Pará

Emerson Rodrigues Bastos

José Maria Braga Pinto

Instituto Federal de Educação, Ciência e Tecnologia do Pará

Roberto Quental Coutinho

Universidade Federal de Pernambuco

Cooperative Institutions

Instituto Federal de Educação, Ciência e Tecnologia do Pará

Universidade Federal de Jataí

Faculdades Guarulhos

Universidade Federal de Pernambuco

Institute of Experimental Physics of the Slovak Academy of Sciences

Universidade de Pernambuco

Sport Lisboa e Benfica

Instituto Federal de Educação, Ciência e Tecnologia de Pernambuco

Hospital das Clínicas da Universidade Federal de Pernambuco

Universidade Federal Rural de Pernambuco

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CHARACTERIZATION OF PLANT FIBERS FROM THE AMAZON REGION FOR USE IN ECO-COMPOSITES

International Journal of Exact Sciences. (2024)

Syme Regina Souza Queiroz Vera Lúcia Dias da Silva Liz Souza Queiroz Elison Souza Queiroz Rosemary Maria Coutinho

Characterization

10.22533/at.ed.1531224200911

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CHARACTERIZATION OF PLANT FIBERS FROM THE AMAZON REGION FOR USE IN ECO-COMPOSITES

International Journal of Exact Sciences. (2024)

Syme Regina Souza Queiroz Vera Lúcia Dias da Silva Liz Souza Queiroz Elison Souza Queiroz Roberto Quental Coutinho

Characterization

10.22533/at.ed.153122420098

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AVALIAÇÃO DE USO DE FIBRAS DA AMAZÔNIA PARA REFORÇO EM COMPÓSITOS DE MATRIZ POLIÉSTER

Syme Regina Souza Queiroz José Maria Braga Pinto Vanessa Maria Yae do Rosario Taketa Nilton Cesar Almeida Queiroz Emerson Rodrigues Bastos

10.22533/at.ed.7082122064

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Tensile properties of composites with glass fibers and curauá fibers in polyester resin matrix

Seven Editora eBooks (2023)

Syme Regina Souza Queiroz Felipe Augusto dos Santos Alves Giâcomo dos Santos Freire Nilton Cesar Almeida Queiroz Vera Lúcia Dias da Silva

Synthetic glass fiber is used by several industrial segments, including civil construction in northern Brazil, due to its characteristics and properties that allow lightness and durability to manufactured products. Curauá (Ananas erectifolius), is a plant with flat, hard leaves that occurs in the state of Pará, from which fiber is extracted that may represent great potential for use in composites for the civil construction industry. Thus, polymer composites with polyester resin matrix and reinforcement with short glass and curauá fibers, both 15 mm long and randomly distributed, were produced for comparison of tensile properties. The first results showed better mechanical performance in tensile of the composites reinforced with curauá fibers in relation to composites with glass fibers, on average 53,17%. The water absorption tests of the composites showed similar values, 1.75% with curauá fibers and 1.73% with glass fibers, indicating good wettability of both fibers. The micrographs of the fracture zones in the tensile tests showed better interfacial interaction of the composites with curauá fibers.

Polyester resin

Synthetic fiber

10.56238/uniknowindevolp-043

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ESTUDO DE CONTRIBUIÇÃO DA ESPÉCIE Guatteria schomburgkiana DA AMAZÔNIA PARA USO NO SETOR INDUSTRIAL DE BASE FLORESTAL

Jício Saraiva Pinho Syme Regina Souza Queiroz Vera Lúcia Dias da Silva Nilton Cesar Almeida Queiroz

In the present work an analysis of the dephosphorizing efficiency of a standard mixture M1 and other three mixtures with increasing percentage of FeO (5%, 10% and 15%) were proposed.Besides those experiments, the standard mixture M1 was tested using two different CaO granulometries, a fine one (M1A) and a coarse one (M1).Experimental tests were carried out at a temperature of 1400°C, with constant agitation of 450 RPM in a resistance heated furnace.Simulations were also performed through computational thermodynamics software FactSage 7.2 and analyzes of images of the surface of the crucible obtained at the end of the experiments were analyzed through the software Quantikov.The mixture M1 yield better efficiency than the other with the increased amount of FeO, since it was observed that as the %FeO in the mixtures increases, the dephosphorization efficiency decreases.Besides those results, using a coarse granulometry yield better results than using fine granulometry, since it generates more particles agglomeration than the coarse one.These results corroborate the equation use to calculate the Fator de desfosforação (FDeP), calculated to correlate slags thermodynamical properties and dephosphorization efficiency.

10.22533/at.ed.0392209069

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