Made available in DSpace on 2014-12-17T14:58:02Z (GMT). No. of bitstreams: 1 MariaCRO_DISSERT.pdf: 2657350 bytes, checksum: 6329dc6423194c512c4121d699e43fa5 (MD5) 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