Memorias de investigación
Artículos en revistas:
Production, cellular structure and thermal conductivity of microcellular methyl methacrylate-butyl of ACRYLATE-METHYL METHACRYLATE TRIBLOCK COPOLYMERS
Año:2010
Áreas de investigación
  • Ingeniería mecánica, aeronaútica y naval
Datos
Descripción
Microcellular foaming of a (methyl methacrylate)¿(butyl acrylate)¿(methyl methacrylate) triblock copolymer was carried out by means of supercritical CO2 in a single-step process. The experiments were performed at 40 ¿C using a pressure of 300 bar (30MPa) during 24 h. The depressurization times were modified from 2 to 30min, leading to cell sizes from 10 to 100 ¿m, and relative densities from0.11 to0.17. It was found that the key parameter to control cell size and density was depressurization time: longer depressurization times generated larger cell sizes and lower densities. The thermal conductivity of these materials was measured using the transient plane source technique, and itwas found that this decreased as the density was reduced. Various models for the prediction of thermal conductivity by conduction were tested. It was found that all the models underestimated the experimental results due to a significant contribution of radiation heat flow for these materials.
Internacional
Si
JCR del ISI
Si
Título de la revista
POLYMER INTERNATIONAL
ISSN
0959-8103
Factor de impacto JCR
2,137
Información de impacto
Volumen
DOI
Número de revista
Desde la página
146
Hasta la página
152
Mes
OCTUBRE
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Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: CEHINAV (Canal de Ensayos Hidrodinámicos de la E.T.S.I. Navales)
  • Departamento: Enseñanzas Básicas de la Ingeniería Naval