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Previous issue date: 2010-07-26 / This work proposes the development of an innovative material made from a
vegetable polyurethane matrix and load of industrial waste, from retread tires, for
thermal insulation and environmental comfort. Experimental procedures are
presented, as well as the results of the thermal and acoustic performance of this
composite material, made from an expansive foam derived from the castor seed oil
and fiber of scrap tires. The residue was treated superficially with sodium hydroxide,
to eliminate contaminants, and characterized macroscopically and microscopically.
Samples were produced with addition of residues at levels of 5%, 10%, 15% and 20%
by weight, for determination of thermal properties: conductivity, heat capacity and
thermal diffusivity, sound absortion index and density. The results were compared to
commercially available thermal insulation and sound absorbing products. According
to the analysis of results, it was concluded that the developed composite presents
characteristics that qualify it as a thermal insulation with superior performance,
compared to commercial available insulation, and sound absorption capacity greater
than the castor oil polyurethane s, without addition of the residue / Neste trabalho tratou-se do desenvolvimento de um material inovador constitu?do de
matriz poliuret?nica vegetal e carga de res?duo industrial, proveniente de
recauchutagem de pneus, para fins de isola??o t?rmica e conforto ambiental. Para
tanto, s?o apresentados procedimentos e resultados experimentais obtidos da
an?lise do desempenho t?rmico e ac?stico desse material comp?sito produzido a
partir de resina expansiva derivada do ?leo da semente de mamona e fibras de
pneus inserv?veis. O res?duo foi tratado superficialmente com hidr?xido de s?dio,
para a elimina??o de impurezas, e caracterizados macrosc?pica e
microscopicamente. Foram produzidos corpos de prova com adi??o de res?duo nas
propor??es de 5%, 10%, 15% e 20% em massa, para determina??o de propriedades
t?rmicas: condutividade, capacidade calor?fica e difusividade t?rmica, do ?ndice de
absor??o sonora e densidade aparente. Os resultados foram comparados aos
isolantes t?rmicos e absorventes sonoros comerciais. De acordo com a an?lise dos
resultados, concluiu-se que o comp?sito desenvolvido possui caracter?sticas que o
qualificam como um isolante t?rmico com desempenho superior aos isolantes
comerciais e com capacidade de absor??o sonora maior que o poliuretano de
mamona sem a adi??o do res?duo
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/15623 |
| Date | 26 July 2010 |
| Creators | Oliveira, Maria Cleide Ribeiro de |
| Contributors | CPF:35846852491, http://lattes.cnpq.br/0490476694313938, Souza, Paulo Alysson Brilhante Faheina de, CPF:02209937426, http://lattes.cnpq.br/2173551172181329, Moraes, M?rcio Luiz Varela Nogueira de, CPF:01157194745, http://lattes.cnpq.br/2573306822477569, Marinho, George Santos |
| 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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