AlN/聚乙烯复合基板的导热性能

利用模压法制备ＡｌＮ／聚忆国烯复合基板，初步了Ａ１Ｎ的结晶形态和填加量对复合基板导热性能的影响，并初步探讨了复合材料热导率的计算模型，结果表明：复合基板的热导率随ＡｌＮ填加量的增大，最初变化很小，而后迅速升高，随后增长速度又逐渐降低，Ａ１Ｎ以晶须形态填加，对提高复合材料的热导率最为有利，纤维次之，粉体最差。

Thermal Conductivity of AlN/PE Composite Substrate

AlN/PE composite substrate was made by mould pressing. The influences of AlN percentage and morphology on the thermal conductivity were studied and the model for predicting thermal conductivity was discussed. The results demonstrate that with the increasing of AlN percentage, the thermal conductivity remains the same initially, after that it increases sharply, and then the rate slows down. The AlN whisker increases the thermal conductivity most efficiently, the second is that AlN fiber and AlN powder are of less efficiency.