1999
DOI: 10.1590/s0104-14281999000200016
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Matriz termofixa fenólica em compósitos reforçados com fibras de bagaço de cana-de-açúcar

Abstract: Neste trabalho, a lignina extraída pelo processo organossolve do bagaço de cana-de-açúcar substituiu parcialmente fenol (40% em massa) em matrizes termofixas reforçadas com fibras curtas de bagaço de cana-de-açúcar (30, 40, 50, 60 e 70%, v/v). Os compósitos obtidos foram caracterizados por TG, DSC, DMTA, Resistência ao Impacto Charpy, Dureza Shore D. Os resultados obtidos mostraram ser viável a substituição de fenol por lignina em matrizes fenólicas. No entanto, para que se obtenha compósitos com propriedades … Show more

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Cited by 10 publications
(5 citation statements)
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“…Bagaço de cana/Fenólica (Paiva;Frollini, 1999) 5, [7][8]6 Banana/Poliéster (Pothan et al, 1999) 23,0-55,0 0,2-0,68 10,0-40,0 2,3-5,3 9,0-37,0 12,0-29,0…”
Section: Tratamento Alcalino Das Fibras De Sisal E Cocomentioning
confidence: 99%
“…Bagaço de cana/Fenólica (Paiva;Frollini, 1999) 5, [7][8]6 Banana/Poliéster (Pothan et al, 1999) 23,0-55,0 0,2-0,68 10,0-40,0 2,3-5,3 9,0-37,0 12,0-29,0…”
Section: Tratamento Alcalino Das Fibras De Sisal E Cocomentioning
confidence: 99%
“…Longitudinally Diffusion Foundations Vol. 14 oriented composites are by nature anisotropic and the ultimate in strength is obtained when the material is tested in the direction of fiber alignment. In the transverse direction of fiber alignment, the reinforcement is virtually non-existent and therefore the material already fails at very low stresses [1,2,7,13,15,30,55,56].…”
Section: Propertiesmentioning
confidence: 99%
“…Thermosetting resins have been used as composite matrices because of their chemical characteristics, mechanical properties, solvent resistance, and stability at elevated temperatures. It is estimated that more than three-quarters of all matrices used in composites are thermosetting polymers [14], because, in general, they are more resistant and less sensitive to chemical attacks and more thermally resistant than the thermoplastics.…”
mentioning
confidence: 99%
“…*Informações fornecidas pelos fabricantes; n=35 farmácias de dispensação A recomendação diária para consumo bras é de no mínimo 25g associado a uma ingestão hídrica abundante (BRASIL, 2005 VAN SOEST, 1994;PAIVA e FROLLINI, 1999).…”
Section: Tabela 1 Freqüência Da Oferta De Alimentos Para Fins Especiunclassified