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In order to better understand how the laser sintering process affects polyamide 12 powder, the authors measured the thermal conductivity of polyamide 12 powder at various densities and conditions. The investigations determined that thermal conductivity of polyamide 12 powder is influenced by temperature and density. The researchers hope to improve the thermal control in laser sintering processes....
Thermal conductivity measurements were performed on polyamide 12 and polyamide 11 powders containing carbon nanotubes using the transient plane source (TPS) technique. The effects of powder density and temperature on thermal conductivity were investigated, as well as the effects of using previously heated powder. The thermal conductivity was found to increase with increasing density. For tests involving fresh powder, the thermal conductivity was found to increase linearly with temperature. For the previously ...
Thermal conductivity measurements were performed on nylon-12 powder over the temperature range from 40-170oC. The thermal conductivity was found to increase linearly over this temperature range. These measurements were performed in order to help better understand how properties of the powder change throughout the process of laser sintering. A one-dimensional model of the thermal energy transport in the powder bed was developed, and it was found to be qualitatively ...
The thermal conductivity of polyamide 12 (also known as nylon 12) in loose powder and bulk forms were determined at varying temperatures. The authors stated that there was a lack of information available on the thermal conductivity of this polymer, which is necessary for assessing the material’s performance during laser sintering. It was determined that the thermal conductivity of the powder increased with increasing temperature, while the thermal conductivity of the ...
