Increasing the thermal conductivity of boron nitride and aluminum nitride particle epoxy-matrix composites by particle surface treatments
Increasing the thermal conductivity of boron nitride and aluminum nitride particle epoxy-matrix composites by particle surface treatments
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DOI：
10.1163/156855400750244969
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发表时间：
2000-01
影响因子：
2.6
通讯作者：
Yunsheng Xu;D. Chung
中科院分区：
文献类型：
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作者：
Yunsheng Xu;D. Chung
通过对氮化硼和氮化铝颗粒环氧基复合材料进行表面处理，其导热系数提高了97%。热导率的增加是由于填料-基体的热接触电阻的降低，通过改善基体与颗粒之间的界面。氮化硼的有效处理包括丙酮、酸（硝酸和硫酸）和硅烷。最有效的处理是硅烷处理，处理后的涂层占处理过的氮化硼重量的2.4%。BN体积分数越大，处理效果越好。在57 vol.% BN时，导热系数达到10.3 W/ m·K。处理对氮化硼颗粒的比表面积影响不大。硅烷处理对AlN也有效。在60 vol.% AlN条件下，导热系数达到11.0 W/m·K。
The thermal conductivity of boron nitride and aluminum nitride particle epoxy-matrix composites was increased by up to 97% by surface treatment of the particles prior to composite fabrication. The increase in thermal conductivity is due to decrease in the filler-matrix thermal contact resistance through the improvement of the interface between matrix and particles. Effective treatments for BN involved acetone, acids (nitric and sulfuric) and silane. The most effective treatment involved silane such that the coating resulted from the treatment amounted to 2.4% of the weight of the treated BN. The effectiveness of a treatment was higher for a larger BN volume fraction. At 57 vol.% BN, the thermal conductivity reached 10.3 W/ m·K. The treatments had little effect on the specific surface area of the BN particles. Silane treatments were also effective for AlN. At 60 vol.% AlN, the thermal conductivity reached 11.0 W/m·K.