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

Reglero Ruiz, Jose Antonio and Saiz-Arroyo, Cristina and Dumon, Michel and Rodríguez Pérez, Miguel Ángel and 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.

Description

Title: Production, cellular structure and thermal conductivity of microcellular (methyl methacrylate)–(butyl acrylate)–(methyl methacrylate) triblock copolymers.
Author/s:
  • Reglero Ruiz, Jose Antonio
  • Saiz-Arroyo, Cristina
  • Dumon, Michel
  • Rodríguez Pérez, Miguel Ángel
  • González Gutierrez, Leo Miguel
Item Type: Article
Título de Revista/Publicación: Polymer International
Date: October 2010
ISSN: 0959-8103
Volume: 60
Subjects:
Freetext Keywords: microcellular foams;thermal conductivity;triblock copolymers;cellular structure
Faculty: E.T.S.I. Navales (UPM)
Department: Enseñanzas Básicas de la Ingeniería Naval [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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

More information

Item ID: 6737
DC Identifier: http://oa.upm.es/6737/
OAI Identifier: oai:oa.upm.es:6737
DOI: 10.1002/pi.2931
Official URL: http://onlinelibrary.wiley.com/doi/10.1002/pi.2931/abstract
Deposited by: Memoria Investigacion
Deposited on: 28 Apr 2011 12:05
Last Modified: 20 Apr 2016 15:55
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