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Previous issue date: 2012-07-16 / The Sustainability has been evidence in the world today; organizations have sought to be more and more into this philosophy in their processes, whether products or attendance. In the present work were manufactured eco-composites with animal fiber (dog wool) that is currently discarded into the environment without any use. The fibers were characterized and made matting (non-woven). The phases of the project were consisted to develop methods and to convert these fibers (booster) blended with polyester resin (matrix) in different proportions (10%, 20% and 30%) at the composite. Were studied fiber characteristics, mechanical properties of the composites, water absorption and scanning electron microscopy. Initially, the fibers were treated with solution of sodium hydroxide of 0.05 mols, and then taken to matting preparing at the textile engineering laboratory - UFRN. The composites were made by compression molding, using an orthophthalic polyester resin as matrix and 1% MEK (methyl ethyl ketone peroxide) as initiator (catalyst). To evaluate the mechanical tests (tensile and flexural) and water absorption were made twelve specimens with dimensions 150x25x3 mm were cut randomly. According to the standard method, tensile tests (ASTM 3039) bending tests (ASTM D790) were performed at the mechanical testing of metals at laboratory UFRN. The results of these tests showed that the composite reinforced with 30% had a better behavior when exposed to tension charge; while on the three points bending test showed that the composite reinforced with 10% had a better behavior. In the water absorption test it was possible to see that the highest absorption happened on the composite reinforced with 30%. In the micrographs, it was possible to see the regions of rupture and behavior of the composite (booster / matrix) / A sustentabilidade tem sido cada dia mais um tema em evid?ncia no mundo, atualmente organiza??es t?m buscado estar cada vez mais dentro desta filosofia em seus processos, seja produtos ou servi?os. No presente trabalho foram fabricados eco-comp?sitos com a fibra animal (l? canina) que atualmente ? descartada no ambiente sem nenhum aproveitamento. As fibras foram caracterizadas e em seguida confeccionadas mantas (n?o tecidas). As fases do projeto consistiram em desenvolver m?todos para converter estas fibras (refor?o) misturadas com resina de poli?ster (matriz) em distintas propor??es (10%, 20% e 30%) nos comp?sitos. Foram estudadas as caracter?sticas da fibra, propriedades mec?nicas dos comp?sitos, absor??o de ?gua e microscopia eletr?nica de varredura. Inicialmente as fibras foram tratadas com uma solu??o de 0,05 mols de hidr?xido de s?dio, em seguida levadas a um preparador de mantas no Laborat?rio de Engenharia T?xtil da UFRN. Os comp?sitos foram fabricados em molde por compress?o, utilizando a resina de poli?ster ortoft?lico como matriz e 1% de per?xido MEK (per?xido de metil etil cetona) como iniciador (catalizador). Para avalia??o dos ensaios mec?nicos (tra??o e flex?o) e absor??o d agua, foram confeccionados corpos de prova com as dimens?es 150x25x3 mm. De acordo com as normas, os ensaios de tra??o (ASTM 3039) e flex?o em tr?s pontos (ASTM D790) foram realizados no Laborat?rio de metais e ensaios mec?nicos da UFRN. Analisando os resultados destes ensaios, observou-se que o comp?sito refor?ado com 30% apresentou um melhor comportamento quando expostos a carregamentos de tra??o, enquanto que no teste de flex?o observou-se que o comp?sito refor?ado com 10% apresentou um melhor comportamento. No ensaio de absor??o d agua foi poss?vel observar um equil?brio na absor??o de umidade dos comp?sitos sendo seu maior percentual de absor??o no comp?sito de 30%. Nas micrografias, se observa as regi?es de ruptura do comp?sito e seu comportamento (fibra/matriz)
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/15690 |
| Date | 16 July 2012 |
| Creators | Silva, Francisco Claudivan da |
| Contributors | CPF:18222161415, http://lattes.cnpq.br/8553209522282182, Nascimento, Jos? Heriberto Oliveira do, CPF:02452573493, http://lattes.cnpq.br/7033735079037677, Souza, Roberto Silva de, CPF:44466927472, http://lattes.cnpq.br/4012782800846844, Felipe, Maria Gorete, Ladchumananandasivam, Rasiah |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Engenharia Mec?nica, UFRN, BR, Tecnologia de Materiais; Projetos Mec?nicos; Termoci?ncias |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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