新型BN／Ag二维层状复合材料的导热胶的制备及其导热性能的表征

Preparation and thermal conduction performance of a novel adhesive enhanced by silver coated BN films

介绍了一种新型导热胶,该导热胶填充了负载了具有良好导热性的银颗粒的氮化硼薄膜,这种薄膜能极大地提高导热胶的散热性能。这种导热胶是一种常见的胶体,其主要由环氧聚合物组成。它的温度特性通过导热系数测定仪测量,伴随着填充物的增加,导热胶的导热系数也会逐渐提高。当填充物在导热胶中所占的质量分数为2.7%时,其导热系数提高到3.55 W/m·k,与没有填充物的导热胶相比导热系数提高20%,这对提高导热胶性能具有重要的意义,同时,实验结果通过仿真手段也得到了验证。

A novel functionalized 2D layer BN enhanced TCA was developed. The base material was a traditional TCA which was composed with epoxy matrix. Thermal characterization indicated that a significant thermal conductivity im- provement was achieved through adding BN/Ag into the material. The results showed that the thermal conductivity value was 3.55 W/m · k when the BN/Ag filling percentage was 2.7% which was more than 20 percent improvement compared to the case without the BN/Ag filling. Meanwhile, The thermal conductivity result was compared with the FEM simula- tion. The simulation agreed well with the experimental results.