Thermal Conductivity Paper Database

Mechanical and thermal performance of concrete and mortar cellular materials containing plastic waste

The expanding production of polymeric materials is causing plastic waste to become a growing concern. This study aimed to fabricate cement and mortar composites that contained plastic in an attempt to extend the life of non-reusable plastics. The thermal conductivity of the composite material was measured using the transient plane source (TPS) technique. Results showed that as expected, thermal conductivity decreased as the plastic content in cement and mortar composites ...

Author(s): Alberto LC3pez-Gil, Alfonso FernC!ndez, Angel Arranz, AntolC-n Lorenzana, Daniel Velasco Nieto, JosC) Luis Ruiz-Herrero, Jose Antonio de Saja, Miguel-C
ngel RodrC-guez-PC)rez, Sonia Merino

Extinction coefficient of polyolefin foams

This article focused on determining the extinction coefficient of polyolefin foams. A combination of experimental and theoretical methods were used to accomplish this goal. Samples differed from each other in terms of thickness, chemical composition, colour, density, and structural characteristics. Fourier transform infrared spectroscopy was used to measure transmittance spectra. Thermal conductivity of the foams was also measured. The researchers concluded that cell size was the primary factor affecting the ...

Author(s): B. Calvo, J. A. de Saja, M. A. Rodriguez-Perez, Miguel-C
ngel RodrC-guez-PC)rez, R. A. Campo-Arnaiz

Production, cellular structure and thermalconductivity of microcellular (methylmethacrylate)–(butyl acrylate)–(methylmethacrylate) triblock copolymers

Microcellular (methylmethacrylate)-(butyl acrylate)-(Methylmethacrylate) triblock copolymer foams were prepared by a foaming process using CO2. CO2 was first dissolved into sheets of the polymer, and then the pressure was released over different time periods, from 2 to 30 minutes. The density, cellular structure, and thermal conductivity of these foams were then investigated. It was determined that the density decreased with increasing depressurization time; however, the density did not change ...

Author(s): Cristina Saiz-Arroyo, Jose Antonio Reglero Ruiz, Leo Gonzalez, M. A. Rodriguez-Perez, Michel Dumon, Miguel-C
ngel RodrC-guez-PC)rez

Experimental validation of the Knudsen effect in nanocellular polymeric foams

As the world works to combat climate change, focus has turned to reducing energy use. More efficient thermal insulation could drastically reduce the energy use of residential homes. In this paper, the research team focused on reducing the thermal conductivity of polymeric foams. A number of foam samples with varying cell sizes between 90nm and 100um were created, to show that reducing pore size also reduces the thermal conductivity. The ...

Author(s): B. Notario, E. Solorzano, J. A. de Saja, J. Pinto, M. A. Rodriguez-Perez, M. Dumon, Miguel-C
ngel RodrC-guez-PC)rez

An experimental study on the inhomogeneities of aluminum foams measuring the thermal conductivity by using the transient plane source method

The production of closed cell foams has recently advanced as the materials gain interest. The purpose of this study was to use the transient plane source (TPS) method to measure the thermal conductivity of AlSi7 closed cell foams. Results showed that thermal conductivity increased with sample density, and experimental results were higher than the predictions of the theoretical models. Measurements were also carried out on different directions of the samples ...

Author(s): A. Fernandez, D. Lehmhus, J. A. Reglero, Jose A. de Saja, M. A. Rodriguez-Perez, M. Wichmann, Miguel-C
ngel RodrC-guez-PC)rez