Production, cellular structure and thermal conductivity of microcellular (methyl methacrylate)–(butyl acrylate)–(methyl methacrylate) triblock copolymers.

Reglero Ruiz, Jose Antonio; Saiz-Arroyo, Cristina; Dumon, Michel; Rodríguez Pérez, Miguel Ángel y González Gutierrez, Leo Miguel (2010). Production, cellular structure and thermal conductivity of microcellular (methyl methacrylate)–(butyl acrylate)–(methyl methacrylate) triblock copolymers.. "Polymer International", v. 60 (n. 1); pp. 146-152. ISSN 0959-8103. https://doi.org/10.1002/pi.2931.

Descripción

Título: Production, cellular structure and thermal conductivity of microcellular (methyl methacrylate)–(butyl acrylate)–(methyl methacrylate) triblock copolymers.
Autor/es:
  • Reglero Ruiz, Jose Antonio
  • Saiz-Arroyo, Cristina
  • Dumon, Michel
  • Rodríguez Pérez, Miguel Ángel
  • González Gutierrez, Leo Miguel
Tipo de Documento: Artículo
Título de Revista/Publicación: Polymer International
Fecha: Octubre 2010
Volumen: 60
Materias:
Palabras Clave Informales: microcellular foams;thermal conductivity;triblock copolymers;cellular structure
Escuela: E.T.S.I. Navales (UPM)
Departamento: Enseñanzas Básicas de la Ingeniería Naval [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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 (30 MPa) during 24 h. The depressurization times were modified from 2 to 30 min, leading to cell sizes from 10 to 100 µm, and relative densities from 0.11 to 0.17. 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 it was 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

Más información

ID de Registro: 6737
Identificador DC: http://oa.upm.es/6737/
Identificador OAI: oai:oa.upm.es:6737
Identificador DOI: 10.1002/pi.2931
URL Oficial: http://onlinelibrary.wiley.com/doi/10.1002/pi.2931/abstract
Depositado por: Memoria Investigacion
Depositado el: 28 Abr 2011 12:05
Ultima Modificación: 20 Abr 2016 15:55
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