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Previous issue date: 2017-01-20 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A utiliza??o de res?duos industriais est? em evid?ncia na atualidade, principalmente em fun??o da quest?o ambiental. Nos ?ltimos anos in?meros comp?sitos foram obtidos e estudados, com a utiliza??o de res?duos e fibras vegetais, desmistificando o conceito de que um material s? pode ser chamado de comp?sito se a carga for de refor?o. Obteve e estudou-se um comp?sito de matriz de resina poli?ster (ortoft?lica e tereft?lica) e carga de enchimento de raspa de madeira produzida em marcenarias. Foram estudados os processos de obten??o dos comp?sitos e a caracteriza??o de propriedades mec?nicas, t?rmicas e f?sicas nas amostras dos comp?sitos com fra??o m?ssica de 10, 20 e 30%, para tr?s diferentes granulometrias, totalizando seis formula??es para porcentagens. Por?m, foi escolhida a formula??o com 20%, pois com essa porcentagem j? tinha atingido a satura??o da mistura. Os ensaios realizados foram de tra??o, flex?o, t?rmico, absor??o de ?gua, densidade, biodegrada??o, degrada??o ambiental e MEV. Os comp?sitos obtidos, em todas as formula??es estudadas, apresentaram resist?ncia mec?nica inferior a da matriz, por?m n?o inviabilizou sua utiliza??o para aplica??es onde n?o s?o requeridos significativos esfor?os. Em termos de resist?ncia t?rmica o comp?sito proposto foi competitivo com a resina matriz, tendo comportamento um pouco inferior. Como esperado os comp?sitos apresentaram maiores ?ndices de absor??o de ?gua quando comparados ?s matrizes polim?ricas. A densidade aparente dos comp?sitos n?o apresentou varia??o significativa em rela??o ?s matrizes utilizadas. Demonstrou-se, portanto, que os res?duos agregados ? resina t?m a fun??o de carga de enchimento. O comp?sito foi utilizado para a fabrica??o de tampos de bancos, demonstrando-se sua viabilidade de aplica??o na fabrica??o de estruturas apara baixas solicita??es mec?nicas. / The use of industrial waste is nowadays evident, especially in the environmental issue. In recent years, the results have been obtained with the use of waste and vegetable fibers, the dismemberment of the concept of a material can be called composite. A polyester resin composite (orthophthalic and terephthalic) composite and filler of wood produced in woodworking was obtained and studied. The processes of obtaining composites and a characterization of mechanical, thermal and physical properties in composite samples with a more specific fraction of 10, 20 and 30% were studied for three different granulometries, totaling six formulations for percentages. However, a formulation with 20% was chosen, because with that percentage already had a saturation of the mixture. The tests carried out for tensile, flexural, thermal, water absorption, density, biodegradation, environmental degradation and MEV tests. The composites obtained in all the studied formulations had lower mechanical resistance than the matrix, however it did not make it impossible to use them in applications where no significant efforts are required. In terms of thermal resistance or composite proposed to competitive with a resin matrix, having somewhat lower behavior. As expected the composites presented higher water absorption indices when compared to the polymer matrices. The apparent density of the composites does not present significant variation in relation to the used dimensions. It has been demonstrated, therefore, that the residues aggregated to the resin have a filling charge function. The composite was used for the manufacture of seat tops, demonstrating its feasibility of application in the fabrication of structures for low mechanical stresses.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/22398 |
| Date | 20 January 2017 |
| Creators | Oliveira, Luan Carvalho Santana de |
| Contributors | 25094955420, http://lattes.cnpq.br/0801747108308706, Mota, Maria Kalionara de Freitas, 05095942470, http://lattes.cnpq.br/6791276267509274, Santos, Natanaeyfle Randemberg Gomes dos, 03047568499, http://lattes.cnpq.br/0174046631340409, Souza, Luiz Guilherme Meira de |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM ENGENHARIA MEC?NICA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| 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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