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Updated: Feb 14, 2026

Casting Protocols for the Production of Open Cell Aluminum Foams by the Replication Technique and the Effect on Porosity
Published on: December 11, 2014
Thermal and Mechanical Characterization of Polymeric Foams with Controlled Porosity Using Hollow Thermoplastic
Yu Bian1, The Thien Ho1, Younghwan Kwon1
1Department of Chemical Engineering, Daegu University, Gyeongsan, Gyeongbuk 38453, Republic of Korea.
Abstract:
Polyurethane (PU) foams with controlled porosity and pore structure are prepared via judicious study on expanding process parameters for thermoplastic expandable microspheres which are compatible with PU synthetic process. Thermal and mechanical properties of PU foams are found to be generally governed by amount of the porosity. Thermal conductivity of PU foams with controlled porosity is measured at 30 °C with transient hot bridge method. The measured thermal conductivity of PU foams is estimated using theoretical models, proving the formation of spherical pore structures of expandable microspheres in PU matrix and serving as an internal porous material.
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