【摘要】 应用导热系数测量仪,测量了中空微球填充聚丙烯复合材料的等效导热系数(keff),并对前期研究中所得到的等效导热系数公式进行了初步验证.结果表明,除个别点外,keff的理论估算值和实测值有较好的一致性.当中空微球体积分数φf≤20%时,随着φf的增加,keff大致呈线性减小.当φf较低时,keff随中空微球粒径的增加而有所下降.更多还原

【Abstract】 The effective thermal conductivity(k_eff) of hollow microsphere-filled polypropylene（PP） composite was measured by using a thermal conductivity instrument,and the equation of effective thermal conductivity published in the previous paper was preliminarily verified.The results show that the estimated values of k_eff are in good agreement with the measured ones except few points,and that k_eff decreases roughly linearly with the volume fraction（（φ_f）） of hollow microsphere when φ_f≤20%,while decreases slightly with the increase in particle diameter at lower φ_f.更多还原