Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Production, cellular structure and thermal conductivity of microcellular methyl methacrylate-butyl of ACRYLATE-METHYL METHACRYLATE TRIBLOCK COPOLYMERS
Year:2010
Research Areas
  • Mechanical aeronautics and naval engineering
Information
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 (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.
International
Si
JCR
Si
Title
POLYMER INTERNATIONAL
ISBN
0959-8103
Impact factor JCR
2,137
Impact info
Volume
Journal number
From page
146
To page
152
Month
OCTUBRE
Ranking
Participants
  • Autor: Leo Miguel Gonzalez Gutierrez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: CEHINAV (Canal de Ensayos Hidrodinámicos de la E.T.S.I. Navales)
  • Departamento: Enseñanzas Básicas de la Ingeniería Naval
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)