Thermal Conductivity of Polypropylene Composites with Combined Boron Nitride Fillers
Thermal Conductivity of Polypropylene Composites with Combined Boron Nitride Fillers
复制标题
复合氮化硼填料的聚丙烯复合材料的热导率
DOI：
10.3139/217.2833
复制
发表时间：
2014
影响因子：
1.3
通讯作者：
Y. Iemoto
中科院分区：
文献类型：
--
作者：
W. Cheewawuttipong;D. Fuoka;S. Tanoue;H. Uematsu;Y. Iemoto
摘要采用熔融共混法制备了氮化硼（BN）粒子填充聚丙烯（PP）复合材料。研究了填料含量、粒径及复合填料对PP/BN复合材料导热性能的影响。结果表明，复合材料的导热系数与BN含量和BN粒度有关。中等尺寸的BN颗粒在PP基体中的良好分散导致了比含有小和大BN颗粒的PP基体更高的热导率，其中观察到BN颗粒的团聚。两种不同尺寸的BN粒子的掺入可以提高PP复合材料的导热系数相对于那些含有单一尺寸的BN粒子在相同的总含量的复合材料。在本实验中，含有50wt%组合填料的PP复合材料与尺寸为45 μm和10 μm的BN颗粒以1：4的重量比的混合物显示出最高的热导率。 此外，还研究了几种预测复合材料导热系数的模型。
Abstract We prepared polypropylene (PP) filled with boron nitride (BN) particles by melt compounding. The effects of filler content, particle size, and combined filler on the thermal conductivity of PP/BN composites were investigated. The results indicated that the thermal conductivities depend on the content and BN particle size. The good dispersion of BN particles of intermediate size in PP matrices led to a higher thermal conductivity than that of PP matrices containing small and large BN particles in which the agglomeration of BN particles was observed. The incorporation of BN particles of two different sizes could enhance the thermal conductivities of PP composites relative to those of composites containing BN particles of a single size at the same total content. A PP composite containing 50 wt% combined fillers with a mixture of BN particles measuring 45 μm and 10 μm at a weight ratio 1 : 4 showed the highest thermal conductivity in this experiment. Furthermore, several models for predicting the thermal conductivity of the composites were studied.