Polylactide (PLA) is a biodegradable polyester with a wide range of applications in transportation and construction industries. In this study, the physical and mechanical properties of low void fraction PLA foams and high void fraction PLA composite foams were examined after their fabrication using the high-pressure foam injection molding (HPFIM) process. A thermal constants analyzer measured the thermal conductivity of the samples using the transient plane source (TPS) method. Results ...
Author(s): A. Ameli, C. B. Park, D. Jahani, M. Nofar, P. U. Jung
Polypropylene (PP) foams are commercially manufactured in four ways, with each method producing different characteristics. The aim of this paper was to examine the properties of each PP-based foam and compare their thermal behaviors and conductivities. A thermal constant analyzer was used to measure the thermal conductivity of the foam samples with the transient plane source (TPS) technique. Results showed that thermal conductivity varied for each production method, but density ...
Author(s): Antonio B. Martinez, Jose Antonio de Saja, Jose Ignacio Velasco, Marcelo Antunes, Miguel-Cngel RodrC-guez-PC)rez, Vera Realinho
The authors prepared silica aerogel/polyurethane composites by two different methods for the comparison of the two methods. The objective was to study the thermal insulation and hydrophobic properties of the composites to evaluate their potential for use as fabric membranes. It was found that the composites are better thermal insulators than polyurethane alone, and that they also have improved hydrophobic properties. It was also determined that the thermal conductivities ...
Author(s): Ching-Tang Huang, Huang-Shian Tsai, Jia-Ru Chen, Kai-Jay Chang, Ko-Shan Ho, Kuan-Chen Peng, Wan-Fu Lien, Yen-Zen Wang
The thermal conductivities of 6 rocks containing gypsum, as well as 6 rocks in which gypsum is absent were determined experimentally. The rock samples were taken from the Kuqa depression, in the north of the Tarim Basin, China. It was determined that gypsum-bearing rocks are thermal insulators, and this property when combined with other properties of gypsum-bearing rocks make them good cap rocks and also make them suitable for oil production and ...
Author(s): Jiarui Feng, Linyan Zhang, Rukai Zhu, Zhiyong Gao, Zhong Luo
Recycled tyre rubber was used to replace varying fractions of limestone as filler in asphalt in order to determine the effect that the added rubber would have on the thermal and physical properties of the asphalt. The properties of interest were the penetration, soft point, and ductility of the asphalt binder, as well as the moisture sensitivity, thermal conductivity, thermal diffusivity, and volumetric thermal capacity of the asphalt mixtures. It ...
Author(s): Fuzhou Lia, Jun Zhenga, Juntao Lin, Lu Wan, Meizhu Chen, Shaopeng Wua
