Phenolic foams from wood tar resols.

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dc.contributor.authorSantos, Claudio Gouvea dos
dc.contributor.authorPasa, Vanya Marcia Duarte
dc.contributor.authorMorais, Willy Ank de
dc.contributor.authorPasa, Vanya Marcia Duarte
dc.date.accessioned2017-05-23T16:55:19Z
dc.date.available2017-05-23T16:55:19Z
dc.date.issued2010
dc.description.abstractThis article investigates resole-type phenolic foams, in which 40% phenol was substituted with distilled oily fractions from wood tar. Different proportions of blowing agent, hexamethylenetetramine, and stabilizer, a sodium alkyl sulfate surface active agent, were used to produce a series of rigid foams, which were characterized by curing index, density and hardness. The average curing index was about 90% and densities ranged from 480 to 960 kg.m 3. A fractal dimension (Df) approach was used to assess the homogeneity of pores within the foams and an average (dimensionless) value of 2.6 was found, indicating a non uniform structure. Compressive strength tests of the foams gave values above 1.0 MPa, which is higher than those for typical phenolic foams.pt_BR
dc.identifier.citationSANTOS, C. G. dos et al. Phenolic foams from wood tar resols. Journal of Applied Polymer Science , v. 115, p. 923-927, 2010. Disponível em: <http://onlinelibrary.wiley.com/doi/10.1002/app.30885/abstract>. Acesso em: 20 abr. 2017.pt_BR
dc.identifier.doihttps://doi.org/10.1002/app.30885
dc.identifier.issn1097-4628
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/7789
dc.identifier.uri2http://onlinelibrary.wiley.com/doi/10.1002/app.30885/abstractpt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectHenolicspt_BR
dc.subjectCellular plasticspt_BR
dc.subjectRigid foamspt_BR
dc.subjectFractal dimensionpt_BR
dc.titlePhenolic foams from wood tar resols.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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