The aim of this work is the fabrication of electrically insulating composite rigid polyurethane foams with improved thermal conductivity. Therefore, this study is focused on the effect of aluminum nitride (AlN) on the thermal and electrical conductivities of rigid polyurethane foams. For this purpose, aluminum nitride/rigid polyurethane composite foams were prepared using a three-step procedure. The electrical and thermal conductivities of the foams were characterized. The thermal transitions, mechanical properties and morphology of the foams were also examined. The results reveal that AlN induces an increase of the thermal conductivity of rigid polyurethane foam of 24% which seems to be a relatively noticeable increase in polymeric foams. The low electrical conductivity of the foams is preserved.

这项工作的目的是制造具有改善的导热性的电绝缘复合硬质聚氨酯泡沫。因此，本研究的重点是氮化铝（AlN）对硬质聚氨酯泡沫的导热性和导电性的影响。为此，使用三步法制备氮化铝/硬质聚氨酯复合泡沫。表征了泡沫的电导率和导热率。还检查了泡沫的热转变，机械性能和形态。结果表明，AlN导致硬质聚氨酯泡沫的导热系数增加了24％，这似乎是聚合物泡沫的相对显着增加。保持了泡沫的低电导率。