Journal of Industrial and Engineering Chemistry, Vol.33, 150-155, January, 2016
Aluminum hydroxide-CNT hybrid material for synergizing the thermal conductivity of alumina sphere/thermoplastic polyurethane composite with minimal increase of electrical conductivity
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Multi-walled carbon nanotube (CNT) was hybridized with aluminum hydroxide utilizing aluminum
trichloride hexahydrate as a precursor to prepare a filler that can be utilized for a thermally conductive yet electrically insulative polymer composite. The thermal conductivity of an alumina sphere/thermoplastic polyurethane (TPU) mixture (100 parts) was enhanced 2 to 3-fold when 5 parts of this hybrid material (Al.CNT hybrid) was added as a synergizer for thermal conduction. This enhancement was better than that by CNT. Moreover, the electrical conductivity increase due to the added Al-CNT hybrid was marginal, whereas the increase was striking when CNT itself was added instead.
Keywords:Carbon nanotube;Aluminum hydroxide;Hybrid;Thermal conductivity;Electrical conductivity;Tensile properties
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